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EP3329797B1 - Device for adjusting the length of a bracelet - Google Patents

Device for adjusting the length of a bracelet Download PDF

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Publication number
EP3329797B1
EP3329797B1 EP17205066.8A EP17205066A EP3329797B1 EP 3329797 B1 EP3329797 B1 EP 3329797B1 EP 17205066 A EP17205066 A EP 17205066A EP 3329797 B1 EP3329797 B1 EP 3329797B1
Authority
EP
European Patent Office
Prior art keywords
guidance
bar
adjusting
bracelet
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17205066.8A
Other languages
German (de)
French (fr)
Other versions
EP3329797A1 (en
Inventor
Martin Christian
Philippe DI PIAZZA
Teddy GRIVET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolex SA
Original Assignee
Rolex SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolex SA filed Critical Rolex SA
Publication of EP3329797A1 publication Critical patent/EP3329797A1/en
Application granted granted Critical
Publication of EP3329797B1 publication Critical patent/EP3329797B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means

Definitions

  • the present invention relates to a device for adjusting the length of a bracelet, comprising a particular guidance and attachment system for a bracelet, particularly suitable for a bracelet for a wristwatch provided with an extension device and / or provided with a '' a folding clasp disposed between two ends of the bracelet. It also relates to a clasp and a bracelet as such, incorporating such a device for adjusting the length of a bracelet, as well as to a wristwatch as such comprising such a device.
  • a clasp designed to hang the two strands of a watch strap around the wrist of its wearer, comprises several articulated blades, which can occupy a first closed position, in which a hooking function is necessary to stabilize this closed position, and a second open position, in which the blades are no longer hung and allow the insertion or removal of the bracelet.
  • a clasp is generally provided with a first adjustment of its positioning relative to the bracelet, called conventional adjustment.
  • the final length obtained is often not perfect and not optimal.
  • the document EP1908366 describes a solution integrated in a clasp for adjusting the length of a bracelet. This solution is based on two parallel spring bars belonging to the same connecting member.
  • the bars include rollers on their ends for sliding in a guide slide formed in a side wall of a clasp cover.
  • a blocking element is arranged around a first bar, capable of cooperating with a rack notch arranged in the upper surface of the cover.
  • the blocking element further comprises a lug which comes to hang elastically on the second bar.
  • the document DE19729903 describes a device for adjusting the length of a bracelet comprising an end mesh provided for connection with the end of a bracelet, and linked to an adjustment mesh in the form of a pivot element pivoting about an axis fixed in the cover of the clasp.
  • the end mesh is mounted so that it can move in rotation by a second axis to the adjustment mesh.
  • the hooking function of the end mesh is implemented by this arrangement around the second axis.
  • the general objective of the invention is to offer a guidance and attachment solution intended for adjusting the length of a bracelet, which improves existing solutions, which in particular optimizes the two guidance and attachment functions.
  • the invention proposes a solution for adjusting the length of a bracelet, or even a solution for closing a bracelet, the operation of which is reliable and the handling user-friendly.
  • an object of the invention is to offer a guidance and attachment solution for a bracelet which makes it possible to achieve reliable operation of the two elastic guidance and attachment functions.
  • a second object of the invention is to offer a guide and attachment solution for a bracelet guaranteeing the aesthetic integrity of a bracelet.
  • the invention is based on a device for adjusting the length of a bracelet, comprising a guidance and attachment system, as defined by claim 1.
  • the invention is based on a combined guidance and attachment system.
  • the guidance and attachment system of the length adjusting device according to the first embodiment of the invention participates in a function of adjusting the length of a bracelet within a clasp, as represented by the figure 1 , and implementing an architecture close to the solution described by the document EP0819391 .
  • the end of such a bracelet is connected to an adjustment device, in particular a comfort adjustment, of its length, shaped to allow a slight adaptation of the length of the bracelet, in addition to a conventional initial adjustment, as explained previously.
  • a clasp 2 with deploying blades comprises two blades 2a, 2b, hinged to each other about an axis 3.
  • One of these blades, the blade 2a is articulated at a first end 1a of a bracelet 1, while the second end 1b of this bracelet is articulated to a cover 24 of the clasp provided with two parallel side walls 2c1, 2c2, forming a cover under which the blades 2a, 2b, fold back.
  • the two parallel side walls 2c1, 2c2, of this cover 24 comprise two respective series of bores 4 which face each other in pairs, intended to receive a pivot axis, as will be detailed below.
  • the guidance and attachment system 10 belonging to the first embodiment of the invention is arranged at the second end 1b of the bracelet, around an axis A1, as will be detailed in more detail.
  • This guide and attachment system first forms an articulation axis for adjustment links 23, 23 ′ arranged under the cover 24 of the clasp.
  • These same adjustment meshes 23, 23 ′ are linked by a second pivot axis 26, arranged around a second axis A2, in particular visible on the figure 2 , distinct from the axis A1 of the guide and attachment system 10, around which is rotatably mounted an end link 25 present at the end 1b of the bracelet 1.
  • the figure 2 illustrates this arrangement at the end 1b of the bracelet in long configuration.
  • the adjustment links 23, 23 ′ are positioned so that the second pivot axis 26 is oriented towards the outside of the cover 24 of the clasp with respect to the first axis A1.
  • the end link 25 thus extends towards the bracelet, between this second pivot axis 26 and a third axis 27 disposed towards the second end 1b, to which the rest of the bracelet strand is linked.
  • the figure 3 illustrates the same arrangement during actuation, in particular for switching from the long configuration to the short configuration.
  • the adjustment links 23, 23 ′ are actuated in rotation about the axis A1, thereby pivoting the pivot axis 26 around this axis A1, towards the inside of the clasp cover, causing the end link 25 towards the inside of the cover, inducing a reduction in the length of the strap 1.
  • This rotation of the adjustment meshes 23, 23 ′ is continued for about half a turn, until reaching the short configuration illustrated by the figure 4 .
  • the guide and attachment system 10 of the length adjustment device according to the first embodiment is arranged around the axis A1 and fulfills the first function of articulation of the adjustment meshes 23, 23 ′ and a second function d elastic coupling allowing stable maintenance of the short configuration mentioned above, as will be detailed below.
  • the figure 5 represents the arrangement in a sectional view along a vertical transverse plane, at the level of the axis A1 of the guidance and attachment system 10.
  • the guide and attachment system 10 first comprises a bar 12, substantially cylindrical, extending transversely over the entire width of the clasp, arranged around the central axis A1, and comprising end pieces 13, 13 'respectively, housed in bores 4 of the side walls 2c1, 2c2 of the cover 24 of the clasp.
  • a retaining spring 14 is disposed in a tubular rod 120 between the two end pieces 13, 13 ', in compressed configuration, along the axis A1, to allow the assembly and disassembly of the bar 12 and its stable maintenance in operating configuration.
  • the rod 120 comprises a peripheral surface, forming a guide surface 11, 11 ', around which the rotation of the adjustment meshes 23, 23' is respectively arranged, in particular by means of a complementary surface formed by a bore of these adjustment meshes.
  • the bar 12 forms a device for guiding the guidance and attachment system 10.
  • the mesh 23 therefore comprises a through bore for the passage of the bar 12.
  • the guidance and attachment system comprises a spring tube 15, disposed around the bar 12, in the central position.
  • This spring tube 15 forms a compression tube. Its axis is the same axis A1 as the bar 12. It is therefore arranged coaxially with the bar 12, which it surrounds.
  • This spring tube 15 forms an attachment device for the guidance and attachment system 10, which fulfills the second function of elastic attachment.
  • at least a portion of the spring tube 15 is provided to be compressed under the actuation of the end mesh 25, more particularly under the actuation of a notch 22 of this end mesh 25, according to this mode. of realization, in short configuration of the bracelet.
  • This compression of the tube generates its elastic deformation of its peripheral wall in a direction substantially perpendicular to the axis A1, therefore in the direction of the bar 12.
  • This cooperation with the end mesh 25 ensures the attachment of this end mesh 25 and the stable maintenance of the entire arrangement in a short configuration. Voluntary pulling of this end link 25 with a predetermined force allows it to escape its elastic hooking and to return to the long configuration of the bracelet.
  • the connection between the spring tube 15 and the bar 12 of the guidance and attachment system 10 is such that the spring tube 15 is independent of the bar 12 and vice versa.
  • the spring tube 15 has, at each of its ends, a portion 16, 16 'provided with a guide surface, which is designed to cooperate with a complementary surface for guiding the adjustment meshes 23, 23', work for example by a bore 230, 230 'of these meshes.
  • the spring tube 15 is arranged and dimensioned so that the internal diameter of the spring tube 15, once compressed, does not collide with the external periphery of the bar 12. Its elastic deformation is therefore free, and has no impact on the bar 12, and does not harm its guiding function.
  • the bar 12 has no influence on the elastic function of the spring tube 15 in its guiding operation.
  • the two guidance and attachment devices of the guidance and attachment system 10 are combined together so as to form a compact device, of minimal bulk, and which does not harm the aesthetics of the clasp or of the bracelet. They also allow them to be assembled and integrated easily within the bracelet.
  • the two devices respectively for guiding and hooking the guide and hooking system are independent from each other.
  • the elastic attachment function is based on an elastic deformation of at least one spring component of the guidance and attachment system, independently of the guide part, that is to say that this deformation n has no impact on the components of the first device participating in the guidance function.
  • the holding force is defined only by the elastic deformation of the spring tube 15, without risk of plastic deformation of the bar 12, or risk of bending of the bar 12.
  • the holding force is also independent of the mesh material of end 25, in particular of the material of the notch 22 of the end mesh 25, which comes directly to cooperate with the spring tube 15 during the implementation of the attachment of the mesh 25 by the spring tube 15.
  • the elements 120, 13, 13 ′ of the guide strip 12 can be found in a material of the 904L steel type or in gold.
  • the spring tube 15 can be in a spring material of the Nivaflex® type, or in a super elastic alloy of nickel and titanium such as Nitinol.
  • the geometry of the tube can of course be adapted in order to optimize its mechanical characteristics.
  • the tube can be split, in particular on either side, or even have one or more cutouts.
  • the elastic hooking function is also independent of the materials used for the adjustment meshes and the end mesh.
  • the holding force generated by the attachment function is constant over time, whatever the bracelet used.
  • the links of the bracelet cooperating with the guide and attachment system, in particular the adjustment link or links and the end link may be made of 904L steel, gold, or even platinum.
  • the figures 6 to 9 illustrate a guide and attachment system 10 of a length adjusting device according to a second embodiment of the invention.
  • This device is likewise integrated in a clasp cover 24 and participates in an adjustment of the length of the bracelet.
  • This adjustment differs from the solution described with reference to the first embodiment, in particular in that the guidance and attachment system 10 belonging to the first embodiment is movable in longitudinal grooves or slides 6 arranged in the vertical walls 2c1, 2c2 of the cover 24.
  • the figures 6 and 7 illustrate the arrangement in a short configuration of the bracelet.
  • Side adjustment meshes 23, 23 ′ are positioned so that the second pivot axis 26 is oriented towards the inside of the cover 24 of the clasp with respect to the first axis A1.
  • the end mesh 25 of the bracelet and the pivot axis 26 are thus in the retracted position opposite the end 1b of the bracelet.
  • the end mesh 25 comprises a finger 28 cooperating with a toothing 8 arranged in the bottom 240 of the cover, to block the movement, corresponding substantially to a translational movement, of the length adjusting device of the bracelet.
  • the teeth of this toothing 8 define several positions of the end mesh 25 of the bracelet opposite the cover 24 of the clasp and therefore several lengths of the bracelet.
  • the finger 28 cooperates with the first tooth of the toothing 8 from the inside of the cover 24, which corresponds to the shortest position of the bracelet.
  • the figure 8 illustrates the adjustment device during actuation for adjusting the length.
  • the end link 25 of the bracelet is manually rotated around its pivot axis 26 arranged between the adjustment links 23, 23 ', with a predetermined force allowing it to be released from its elastic attachment in the attachment device of the system. guide and attachment, while releasing his finger 28 from the teeth 8 of the clasp cover.
  • the adjustment device is thus free to move longitudinally in the lateral grooves of the clasp.
  • the end link 25 is folded down towards the bottom 240 of the cover, so that it comes to hook elastically in the hooking device of the guide and hooking system 10 , while blocking its longitudinal position by positioning its finger 28 in a new tooth of the toothing 8 of the clasp.
  • the guide and attachment system 10 is more particularly illustrated by the cross section of the figure 9 .
  • This guide and attachment system 10 is very close to that of the first embodiment. It comprises a bar 12 which differs from the bar of the first embodiment in that it is guided, at its lateral ends, by pads 17, 17 'housed in grooves arranged longitudinally in the vertical walls 2c1, 2c2 of the cover 24.
  • the bar 12 is capable of being guided by the grooves, according to a movement which follows the curvature of the cover 24, and which approaches a longitudinal translation.
  • a spring tube 15 is arranged coaxially with the bar 12, in a similar manner to the first embodiment.
  • the mesh 25 may also include a notch 22 whose conformation is provided to generate adequate compression forces of the spring tube 15.
  • the connection between the spring tube 15 and the bar 12 of the guide and attachment system 10 is such that the spring tube 15 is independent of the bar 12 and vice versa.
  • the spring tube 15 has, at each of its ends, a portion 16, 16 'provided with a guide surface, which is designed to cooperate with a complementary surface for guiding the adjustment meshes 23, 23', work for example by a bore 230, 230 'of these meshes.
  • the spring tube 15 is arranged and dimensioned so that the internal diameter of the spring tube 15, once compressed, does not collide with the outer periphery of the bar 12. Its elastic deformation is therefore free, has no impact on the bar 12, and does not harm its guiding function.
  • the bar 12 has no influence on the elastic function of the spring tube 15 in its guiding operation.
  • the guide of the spring tube 15 by the adjustment links 23, 23 ′ can be carried out with a clearance defined in such a way that the spring tube 15 can be driven in rotation or not under the effect of the notch, before and / or during the compression of the spring tube 15.
  • the figures 10 to 14 illustrate a guidance and attachment system 30 belonging to a third embodiment of the length adjustment device, which is similar to that shown in figure 1 .
  • the device for adjusting the length of a bracelet operates in a similar manner to that described with reference to the first embodiment.
  • the guidance and attachment system 30, particularly shown in the figure 10 comprises a bar 32 comprising a first hollow axis 34 provided with an external periphery 33 intended to guide an adjustment mesh 23.
  • the bar 32 comprises a second hollow axis 39, housed within the first hollow axis 34, intended to connect a adjustment mesh 23 to a clasp cover 24, in particular by means of a tenon 38 disposed at a first end of the bar 32.
  • the two hollow axes are secured by riveting 37.
  • a helical spring 35 is integrated within the hollow volume of the bar 32, in prestressed configuration. It cooperates with a ball 45 positioned partly within the hollow volume of the bar, in a movable manner, and partly projecting outside the bar 32, at its second end.
  • the helical spring 35 exerts a force on the ball 45, oriented towards the outside of the bar 32.
  • the ball 45 is thus held in abutment against an inner side wall of the bar while projecting at the second end of the bar 32.
  • the figure 11 illustrates a device for adjusting the length of a bracelet, which incorporates two guide and hooking devices 30, 30 ′ as described above to connect two adjustment links 23, 23 'to the cover 24 of the clasp, along an axis of rotation A1.
  • the figure 11 illustrates the long configuration of the bracelet, in which a second axis of rotation A2 linked to the two adjustment links 23, 23 'is oriented towards the outside of the clasp.
  • An end link 25 of the bracelet is fixed to a pivot axis 26 arranged around this second axis of rotation A2.
  • the figure 12 illustrates in section view the short configuration of the device for adjusting the length of a bracelet. It is obtained by the rear rotation of the adjustment meshes, around the axis A1, according to a guide around the peripheral surface of the bar 32. The principle is similar to that described with reference to the first embodiment.
  • the figure 13 illustrates the elastic attachment function of the guidance and attachment system 30 in the short configuration of the strap length adjustment device.
  • the end mesh 25 comes to cooperate with the balls 45 of the guidance and attachment system 30.
  • This end mesh 25 has the particularity of comprising at least one notch 29, 29 'arranged in a hollow in a of its side walls.
  • Each notch 29, 29 ′ can for example take the form of a cutout delimited by one or more inclined flanks with respect to the side walls of the mesh 25.
  • the guidance and attachment system also brings together two separate devices, respectively for guidance and attachment.
  • the guide device comprises the bar 32, and more precisely at least part of its peripheral surface, as well as possibly its first end.
  • the attachment device comprises the helical spring 35 and the ball 45.
  • the two guiding and attachment functions are thus provided independently of each other.
  • the hooking function is moreover independent of the meshes used, in particular of the material used for the meshes of the bracelet.
  • the holding force is defined only by the elastic deformation of the springs 35, without risk of plastic deformation of the notch (s), or risk of bending of the bar 12.
  • the bar 32 is substantially cylindrical, around an axis A1, and provides rotational guidance of an adjustment mesh 23 around this axis A1.
  • the helical spring 35 and the ball 45 are arranged along this same axis A1, the spring working in compression in the direction of the axis A1.
  • the ball 45 is movable in the direction of the axis A1.
  • the helical spring 35 and the ball 45 are thus arranged around the axis A1.
  • the bar 32 surrounds the helical spring and the ball 45.
  • the axis A1 substantially forms an axis of symmetry for the elastic attachment device.
  • the adjustment device implements two guidance and attachment systems 30, 30 ′.
  • balls 45, 45 ′ of the guidance and attachment systems 30, 30 ′ can be replaced by studs or any other component whose geometry is adapted to constitute an adequate interface between a spring and a notch: we will use therefore the term ball in the broad sense, making it possible to include geometries which are not necessarily spherical.
  • the figures 15 to 18 illustrate a guidance and attachment system 40 belonging to a fourth embodiment of the device for adjusting the length of a bracelet within a clasp.
  • Such a guidance and attachment system comprises a bar 42 forming a hollow axis. Part of its outer periphery 43 is intended to guide an adjustment mesh 23.
  • a helical spring 35 is integrated within the hollow volume of the bar 42, in prestressed configuration. The helical spring 35 cooperates with two balls, a first ball 45 arranged at a first end of the bar oriented towards an end mesh 25, and a second ball 46 arranged at a second end of the bar oriented towards a wall 2c1, 2c2 of the cover 24 of the clasp, positioned partly within the hollow volume of the bar 32, in a mobile manner, and projecting outside the bar, at each end.
  • the bar 42 includes a movable stop 47 between the two balls 45, 46.
  • the balls can be replaced by studs or any other component whose geometry is suitable for constitute an adequate interface between a spring and a notch.
  • the figure 15 shows a clasp comprising two guide and attachment systems 40, 40 'belonging to the fourth embodiment. These two guidance and attachment systems are aligned along the same axis A1, and both cooperate with an end link 25 in the central position, similar to the clasp according to the embodiment. previous.
  • the figure 15 illustrates an attachment configuration, in which the first balls 45, 45 'respective of the two guidance and attachment systems 40, 40' are housed in a notch 29, 29 'respective arranged in each side wall of the mesh end 25.
  • each guide and attachment system 40, 40 ′ ensures the attachment of the end mesh 25 and maintains the chosen adjustment configuration in a stable manner.
  • the respective second balls 46, 46 'of the two guide and attachment systems 40, 40' are housed in notches 9, 9 'formed respectively, in particular by machining, on the vertical walls 2c1, 2c2 of the cover 24.
  • each bar 42, 42 ' is arranged to be able to move in pairs of grooves 6a, 6b and 6a', 6b 'formed in the vertical side walls 2c1, 2c2 of the cover of the clasp, as in the second embodiment of the invention described above.
  • the outer peripheries 43, 43 'of the bars also form second guide surfaces which receive a guide shoe 17, 17' intended to be guided within the pairs of grooves 6a, 6b and 6a ', 6b' of the cover of the clasp.
  • each guide and hooking system 40, 40 ′ fulfills two simultaneous elastic hooking functions, with a mesh on the one hand and with the clasp, in particular the clasp cover 24, on the other hand.
  • the central mesh 25 When the central mesh 25 is released from its elastic attachment, it simultaneously releases the two abovementioned attachments, which has the effect of allowing the longitudinal displacement of the adjustment meshes 23, 23 ′ and their guidance and attachment systems 40, 40 'respectively along the grooves.
  • this architecture allows a double adjustment.
  • the adjustment links 23, 23 ′ are moreover mobile in rotation around the guide devices, which makes it possible to obtain the same effect as in the first mode. embodiment, namely a rotation of the end mesh 25 opposite the adjustment meshes 23, 23 '.
  • the figure 16 represents a short configuration of the bracelet for a given position of the second balls 46, 46 'within the notches 9, 9'.
  • the figure 18 represents, for its part, a long configuration of the bracelet for a given position of the second balls 46, 46 'within the notches 9, 9'.
  • the adjustment links 23, 23 ' are rotated 180 degrees relative to their position on the figure 16 , thus offering an additional extension.
  • FIGS. 19 and 20 illustrate a guidance and attachment system 50 belonging to a fifth embodiment of the device for adjusting the length, similar to that shown in figure 13 .
  • the length adjustment device of a bracelet operates in a similar manner to that described with reference to the third embodiment of the length adjustment device.
  • the guidance and attachment system 50 comprises a bar 52 having the shape of a first hollow axis 54 provided with an external periphery 53 intended to guide an adjustment mesh 23.
  • the bar 52 therefore forms a device for guiding the guide and attachment 50 according to this embodiment of the length adjusting device.
  • This bar 52 is further intended to connect an adjustment link 23 to a clasp cover 24, by means of a pin 58 disposed at a first end of the bar 52.
  • a helical spring 55 is integrated within the hollow volume of the bar 52, in the prestressed configuration when the cover 24 is assembled. Its function is to maintain the pin 58 in a stable manner within a bore 4 arranged in a vertical wall of the cover 24 of the clasp.
  • the device for adjusting the length of a bracelet incorporates two bars 52, 52 'as described above for connecting two adjustment links 23, 23' to the cover 24 of the clasp, along an axis of rotation A1.
  • the adjustment links 23, 23 ′ are moreover connected to an end link 25, as in the previous embodiments, by a link articulated around an axis 26.
  • the adjustment mesh further comprises a cylindrical opening in which is housed a second bar 62, extending transversely over the entire width of the end mesh 25.
  • This second bar has a hollow axis 63 which incorporates a helical spring 65, in prestressed configuration.
  • This helical spring 65 cooperates with two balls 75, 75 ' positioned partly within the hollow volume of the axis 63, in a movable manner, and partly projecting outside the axis 63, respectively at its two lateral ends.
  • FIG. 20 illustrates the device for adjusting the length of a bracelet, in the long configuration of the bracelet, in which a second axis of rotation A2 linked to the two adjustment meshes 23, 23 ′ is oriented towards the outside of the clasp.
  • An end link 25 of the bracelet is fixed to the adjustment links 23, 23 ′ by a pivot axis 26 arranged around this second axis of rotation A2.
  • the figure 19 illustrates the device for adjusting the length of a bracelet, in the short configuration of the bracelet, in which the rear rotation of the adjustment links 23, 23 ′, around the axis A1, according to a guide around the peripheral surface of the bars 52, 52 'makes it possible to position the pivot axis 26 towards the inside of the clasp cover 24.
  • the balls 75, 75 'of the end mesh 25 cooperate with notches 59, 59' arranged in the hollow in the side walls of the adjustment meshes 23, 23 ', centered substantially on the axis A1 , in the extension of the axis of the bars 52, 52 '.
  • the notches 29, 29 ' can for example take the form of a cut delimited by one or more sides inclined with respect to the side walls of the adjustment meshes 23, 23'.
  • the side walls of the adjustment meshes 23, 23 ′ are preferably vertical.
  • the second bar 62 integrated within the end mesh 25 represents a device for hooking up the guide and hooking system 50.
  • the vertical walls of the cover 24 have several bores 4 distributed longitudinally to provide additional length adjustment by simply moving the meshes 23, 23 'and inserting their pins 58, 58' in one of these bores 4 opposite.
  • this fifth embodiment corresponds to the third embodiment, in which the means forming the latching function have been rearranged between the adjustment meshes 23, 23 'and the mesh end 25, to achieve equivalent operation and a similar result.
  • the guidance and attachment system also brings together two separate devices, respectively for guidance and attachment.
  • the guide device comprises at least one bar 52, and more precisely at least part of its peripheral surface 53.
  • the attachment device comprises the helical spring 65 and the balls 75, 75 '.
  • the two guidance and attachment functions are thus provided independently of one another.
  • the hooking function is moreover independent of the meshes used, in particular of the material used for the meshes of the bracelet.
  • the holding force is defined only by the elastic deformation of the spring 65, without risk of plastic deformation of the notch or notches, or risk of bending of the bar.
  • the balls 45, 45 ′ of the guidance and attachment systems 30, 30 ′ can be replaced by studs or any other component whose geometry is adapted to constitute an adequate interface between a spring and a notch: we will use therefore the term ball in the broad sense, making it possible to include geometries which are not necessarily spherical.
  • the invention therefore relies on the optimal arrangement of an elastic attachment device, in combination with a guide device, to obtain a compact assembly allowing the definition of improved performance and aesthetic results.
  • This combination of the two guidance and attachment devices is advantageously carried out around the same axis, which may be an axis of symmetry and / or an axis of rotation when implementing a guidance function.
  • these two devices might not have axial symmetry.
  • their axes could be slightly offset and parallel.
  • one of the two devices at least partially surrounds the other device.
  • first element for example a first bracelet link or a first clasp blade
  • second element such as for example a second bracelet link or a second clasp blade
  • the guide device can be arranged in the first element and the elastic hooking device in the second element, so that these two devices are aligned on the same transverse axis in the hooking position of the two elements.
  • elastic hooking device we mean a device which comprises at least one spring element, which deforms to hook a component to one or more other component (s), in an elastically reversible manner.
  • This elastic attachment can be practiced against a bracelet mesh, said mesh participating passively (without deformation) in the attachment.
  • This elastic attachment can be practiced against a fixed part of a bracelet or a clasp.
  • guide device a device provided with at least one means, in particular a surface, for guiding a component with respect to a separate component.
  • This guidance can be a rotation and / or a displacement in a groove, in particular a displacement corresponding substantially to a translation or a displacement corresponding to the curvature of a clasp cover. It can be implemented with a bracelet link, in particular an adjustment link, and / or a clasp.
  • the two guiding and hooking devices are independent, that is to say that they implement their respective functions without influencing the other device.
  • the guidance and attachment system is associated with a device for adjusting the length of a bracelet within a clasp, as described above.
  • an adjustment mesh and possibly at least part of an end mesh is placed under a cover formed by the clasp, this mechanism thus remaining hidden.
  • the clasp can be of different types, with two or three folding blades.
  • the guidance and attachment system could be simply associated with a blade of a clasp, and allow the articulation and the attachment of this blade.
  • the guidance and attachment system can thus be implemented for any system linked to a bracelet requiring variations in geometry.
  • the guide and attachment system could be associated with a link or a bracelet link, whatever its position relative to the clasp.
  • the invention also relates to a bracelet and / or a clasp and / or a wristwatch, which incorporates at least one guidance and attachment system, and a length adjustment device.

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Description

IntroductionIntroduction

La présente invention concerne un dispositif de réglage de la longueur d'un bracelet, comprenant un système de guidage et d'accrochage particulier pour bracelet, particulièrement adapté à un bracelet pour montre-bracelet muni d'un dispositif de rallonge et/ou muni d'un fermoir à lames déployantes disposé entre deux extrémités du bracelet. Elle porte aussi sur un fermoir et un bracelet en tant que tels, intégrant un tel dispositif de réglage de la longueur d'un bracelet, ainsi que sur une montre-bracelet en tant que telle comprenant un tel dispositif.The present invention relates to a device for adjusting the length of a bracelet, comprising a particular guidance and attachment system for a bracelet, particularly suitable for a bracelet for a wristwatch provided with an extension device and / or provided with a '' a folding clasp disposed between two ends of the bracelet. It also relates to a clasp and a bracelet as such, incorporating such a device for adjusting the length of a bracelet, as well as to a wristwatch as such comprising such a device.

Etat de l'ArtState of the art

Il existe plusieurs situations dans lesquelles il est nécessaire de mettre en œuvre des fonctions de guidage et d'accrochage au niveau d'un bracelet, notamment de montre-bracelet, particulièrement dans un dispositif de réglage de longueur d'un bracelet.There are several situations in which it is necessary to implement guidance and hooking functions at the level of a bracelet, in particular of a wristwatch, particularly in a device for adjusting the length of a bracelet.

Par exemple, un fermoir, prévu pour accrocher les deux brins d'un bracelet de montre autour du poignet de son porteur, comprend plusieurs lames articulées, qui peuvent occuper une première position de fermeture, dans laquelle une fonction d'accrochage est nécessaire pour stabiliser cette position de fermeture, et une deuxième position d'ouverture, dans laquelle les lames ne sont plus accrochées et permettent l'insertion ou le retrait du bracelet.For example, a clasp, designed to hang the two strands of a watch strap around the wrist of its wearer, comprises several articulated blades, which can occupy a first closed position, in which a hooking function is necessary to stabilize this closed position, and a second open position, in which the blades are no longer hung and allow the insertion or removal of the bracelet.

D'autre part, un fermoir est en général doté d'un premier réglage de son positionnement relativement au bracelet, dit réglage conventionnel. Cependant, la longueur finale obtenue n'est souvent pas parfaite et non optimale.On the other hand, a clasp is generally provided with a first adjustment of its positioning relative to the bracelet, called conventional adjustment. However, the final length obtained is often not perfect and not optimal.

Pour cela, des fermoirs existants sont équipés d'une solution permettant la réalisation d'un deuxième réglage de la longueur du bracelet, aussi appelé réglage de confort, complémentaire avec le premier réglage conventionnel. Le document EP0819391 décrit une telle solution, qui repose sur un maillon de réglage qui pivote et peut occuper deux positions stables induisant deux longueurs différentes du bracelet. La position courte est maintenue par un cran d'un maillon d'extrémité du bracelet qui vient s'accrocher et se bloquer de manière élastique contre le maillon de réglage dans sa position courte. Une telle solution nécessite donc l'articulation de plusieurs maillons et l'accrochage d'un maillon pour garantir la stabilité de la position courte.For this, existing clasps are equipped with a solution allowing the production of a second adjustment of the length of the bracelet, also called comfort adjustment, complementary to the first conventional adjustment. The document EP0819391 describes such a solution, which is based on an adjustment link which pivots and can occupy two stable positions inducing two different lengths of the bracelet. The short position is maintained by a notch of an end link of the bracelet which hooks and locks elastically against the adjustment link in its short position. Such a solution therefore requires the articulation of several links and the attachment of a link to guarantee the stability of the short position.

D'autres fermoirs, tel que celui décrit par le document EP2601855 , intègrent un système de rallonge prévu pour la pratique de la plongée sous-marine. Une telle solution nécessite de même la mise en œuvre des deux fonctions de guidage et d'accrochage pour obtenir l'effet de rallonge.Other clasps, such as that described in the document EP2601855 , incorporate an extension system designed for scuba diving. Such a solution likewise requires the implementation of the two guidance and attachment functions in order to obtain the extension effect.

Le document EP1908366 décrit une solution intégrée dans un fermoir pour le réglage de la longueur d'un bracelet. Cette solution repose sur deux barrettes à ressort parallèles appartenant à un même organe de liaison. Les barrettes comprennent des galets sur leurs extrémités pour un coulissement dans une coulisse de guidage formée dans une paroi latérale d'un couvercle du fermoir. Un élément de blocage est agencé autour d'une première barrette, apte à coopérer avec un crantage de crémaillère agencé dans la surface supérieure du couvercle. L'élément de blocage comprend de plus un ergot qui vient s'accrocher de manière élastique sur la deuxième barrette. Le document DE19729903 décrit un dispositif de réglage de la longueur d'un bracelet comprenant une maille d'extrémité prévue pour une liaison avec l'extrémité d'un bracelet, et liée à une maille de réglage sous la forme d'un élément pivot pivotant autour d'un axe fixé dans le couvercle du fermoir. La maille d'extrémité est montée mobile en rotation par un deuxième axe à la maille de réglage. La fonction d'accrochage de la maille d'extrémité est mise en œuvre par cet agencement autour du deuxième axe.The document EP1908366 describes a solution integrated in a clasp for adjusting the length of a bracelet. This solution is based on two parallel spring bars belonging to the same connecting member. The bars include rollers on their ends for sliding in a guide slide formed in a side wall of a clasp cover. A blocking element is arranged around a first bar, capable of cooperating with a rack notch arranged in the upper surface of the cover. The blocking element further comprises a lug which comes to hang elastically on the second bar. The document DE19729903 describes a device for adjusting the length of a bracelet comprising an end mesh provided for connection with the end of a bracelet, and linked to an adjustment mesh in the form of a pivot element pivoting about an axis fixed in the cover of the clasp. The end mesh is mounted so that it can move in rotation by a second axis to the adjustment mesh. The hooking function of the end mesh is implemented by this arrangement around the second axis.

Finalement, les exemples précédents illustrent qu'il existe de nombreuses solutions de bracelets qui mettent en œuvre des articulations et des accrochages élastiques, particulièrement dans un dispositif de réglage de longueur.Finally, the previous examples illustrate that there are many solutions for bracelets which implement elastic joints and hooks, particularly in a length adjustment device.

L'invention a pour objectif général d'offrir une solution de guidage et d'accrochage destinée à un réglage de longueur d'un bracelet, qui améliore les solutions existantes, qui optimise notamment les deux fonctions de guidage et d'accrochage.The general objective of the invention is to offer a guidance and attachment solution intended for adjusting the length of a bracelet, which improves existing solutions, which in particular optimizes the two guidance and attachment functions.

Plus particulièrement, l'invention propose une solution de réglage de la longueur d'un bracelet, voire une solution de fermeture d'un bracelet, dont le fonctionnement est fiable et la manipulation conviviale.More particularly, the invention proposes a solution for adjusting the length of a bracelet, or even a solution for closing a bracelet, the operation of which is reliable and the handling user-friendly.

Plus particulièrement, un objet de l'invention est d'offrir une solution de guidage et d'accrochage pour bracelet qui permet d'atteindre un fonctionnement fiable des deux fonctions de guidage et d'accrochage élastique.More particularly, an object of the invention is to offer a guidance and attachment solution for a bracelet which makes it possible to achieve reliable operation of the two elastic guidance and attachment functions.

Un deuxième objet de l'invention est d'offrir une solution de guidage et d'accrochage pour bracelet garantissant l'intégrité esthétique d'un bracelet.A second object of the invention is to offer a guide and attachment solution for a bracelet guaranteeing the aesthetic integrity of a bracelet.

Brève description de l'inventionBrief description of the invention

A cet effet, l'invention repose sur un dispositif de réglage de la longueur d'un bracelet, comprenant un système de guidage et d'accrochage, tel que défini par la revendication 1.To this end, the invention is based on a device for adjusting the length of a bracelet, comprising a guidance and attachment system, as defined by claim 1.

Brève description des figuresBrief description of the figures

Ces objets, caractéristiques et avantages de l'invention seront exposés en détail dans la description suivante de modes de réalisation particuliers faits à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 représente une vue en perspective d'un fermoir intégrant un système de guidage et d'accrochage appartenant à un premier mode de réalisation de l'invention.
  • La figure 2 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au premier mode de réalisation de l'invention, en configuration longue.
  • La figure 3 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au premier mode de réalisation de l'invention, en configuration d'actionnement.
  • La figure 4 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au premier mode de réalisation de l'invention, en configuration courte.
  • La figure 5 représente le fermoir en coupe transversale au niveau du système de guidage et d'accrochage appartenant au premier mode de réalisation de l'invention.
  • La figure 6 représente un fermoir en coupe longitudinale au niveau d'un dispositif de réglage de longueur de bracelet en configuration courte intégrant un système de guidage et d'accrochage appartenant à un deuxième mode de réalisation de l'invention.
  • La figure 7 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant à un deuxième mode de réalisation de l'invention, en configuration courte.
  • La figure 8 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au deuxième mode de réalisation de l'invention, en configuration d'actionnement.
  • La figure 9 représente le fermoir en coupe transversale au niveau du système de guidage et d'accrochage appartenant au deuxième mode de réalisation de l'invention.
  • La figure 10 représente une vue en coupe transversale d'un système de guidage et d'accrochage appartenant à un troisième mode de réalisation de l'invention.
  • La figure 11 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au troisième mode de réalisation de l'invention, en configuration longue.
  • La figure 12 représente une vue en coupe longitudinale du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au troisième mode de réalisation de l'invention, en configuration courte.
  • La figure 13 représente une vue en coupe transversale du fermoir en configuration courte au niveau du système de guidage et d'accrochage appartenant au troisième mode de réalisation de l'invention.
  • La figure 14 représente une vue en coupe transversale du fermoir en phase d'actionnement au niveau du système de guidage et d'accrochage appartenant au troisième mode de réalisation de l'invention.
  • La figure 15 représente un fermoir en configuration courte en coupe transversale au niveau d'un système de guidage et d'accrochage appartenant à un quatrième mode de réalisation de l'invention.
  • La figure 16 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au quatrième mode de réalisation de l'invention, selon un premier réglage.
  • La figure 17 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au quatrième mode de réalisation de l'invention, selon un deuxième réglage.
  • La figure 18 représente une vue en perspective du fermoir au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au quatrième mode de réalisation de l'invention, selon un troisième réglage.
  • La figure 19 représente une vue en coupe selon un plan longitudinal d'un fermoir en configuration courte, au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au cinquième mode de réalisation de l'invention.
  • La figure 20 représente une vue en coupe selon un plan longitudinal d'un fermoir en configuration longue, au niveau d'un dispositif de réglage de longueur de bracelet intégrant le système de guidage et d'accrochage appartenant au cinquième mode de réalisation de l'invention.
These objects, characteristics and advantages of the invention will be explained in detail in the following description of particular embodiments made without implied limitation in relation to the attached figures among which:
  • The figure 1 shows a perspective view of a clasp incorporating a guidance and attachment system belonging to a first embodiment of the invention.
  • The figure 2 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the first embodiment of the invention, in long configuration.
  • The figure 3 shows a perspective view of the clasp at a strap length adjusting device incorporating the guidance and attachment system belonging to the first embodiment of the invention, in the actuation configuration.
  • The figure 4 shows a perspective view of the clasp at a strap length adjusting device incorporating the guidance and attachment system belonging to the first embodiment of the invention, in short configuration.
  • The figure 5 represents the clasp in cross section at the level of the guidance and attachment system belonging to the first embodiment of the invention.
  • The figure 6 represents a clasp in longitudinal section at the level of a bracelet length adjustment device in short configuration integrating a guidance and attachment system belonging to a second embodiment of the invention.
  • The figure 7 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to a second embodiment of the invention, in short configuration.
  • The figure 8 shows a perspective view of the clasp at a strap length adjusting device incorporating the guidance and attachment system belonging to the second embodiment of the invention, in the actuation configuration.
  • The figure 9 represents the clasp in cross section at the level of the guidance and attachment system belonging to the second embodiment of the invention.
  • The figure 10 shows a cross-sectional view of a guide and attachment system belonging to a third embodiment of the invention.
  • The figure 11 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the third embodiment of the invention, in long configuration.
  • The figure 12 shows a longitudinal sectional view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the third embodiment of the invention, in short configuration.
  • The figure 13 shows a cross-sectional view of the clasp in short configuration at the level of the guidance and attachment system belonging to the third embodiment of the invention.
  • The figure 14 shows a cross-sectional view of the clasp in the actuation phase at the guidance and attachment system belonging to the third embodiment of the invention.
  • The figure 15 shows a clasp in short configuration in cross section at a guidance and attachment system belonging to a fourth embodiment of the invention.
  • The figure 16 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the fourth embodiment of the invention, according to a first setting.
  • The figure 17 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the fourth embodiment of the invention, according to a second setting.
  • The figure 18 shows a perspective view of the clasp at a strap length adjusting device incorporating the guide and attachment system belonging to the fourth embodiment of the invention, according to a third setting.
  • The figure 19 shows a sectional view along a longitudinal plane of a clasp in short configuration, at a strap length adjusting device incorporating the guide and attachment system belonging to the fifth embodiment of the invention.
  • The figure 20 shows a sectional view along a longitudinal plane of a clasp in long configuration, at a strap length adjusting device incorporating the guide and attachment system belonging to the fifth embodiment of the invention.

Pour simplifier la description, nous utiliserons par convention les termes de « direction longitudinale » pour la direction selon la longueur d'un brin de bracelet ou d'un fermoir, et de « direction transversale » pour la direction perpendiculaire, dans le plan d'un brin de bracelet (selon sa largeur) ou d'un fermoir. La direction verticale est la direction perpendiculaire aux deux premières directions, orientée perpendiculairement au plan du bracelet. D'autre part, nous utiliserons le terme de « maille » pour un composant élémentaire d'un bracelet et le terme « maillon » pour un assemblage de mailles. Par « bracelet », nous désignerons soit le bracelet dans son ensemble, fermoir compris ou non, soit l'un ou l'autre des brins du bracelet. D'autre part, les mêmes références seront utilisées dans les différents modes de réalisation pour désigner des éléments identiques ou similaires ou présentant les mêmes fonctions.To simplify the description, we will conventionally use the terms "longitudinal direction" for the direction along the length of a strand of bracelet or clasp, and "transverse direction" for the perpendicular direction, in the plane of a bracelet strand (depending on its width) or a clasp. The vertical direction is the direction perpendicular to the first two directions, oriented perpendicular to the plane of the bracelet. On the other hand, we will use the term "link" for an elementary component of a bracelet and the term "link" for an assembly of links. By “bracelet”, we will designate either the bracelet as a whole, clasp included or not, or one or other of the strands of the bracelet. On the other hand, the same references will be used in the different embodiments to designate identical or similar elements or having the same functions.

L'invention repose sur un système de guidage et d'accrochage combiné. Le système de guidage et d'accrochage du dispositif de réglage de longueur selon le premier mode de réalisation de l'invention participe à une fonction de réglage de longueur d'un bracelet au sein d'un fermoir, tel que représenté par la figure 1, et mettant en œuvre une architecture proche de la solution décrite par le document EP0819391 . L'extrémité d'un tel bracelet est reliée à un dispositif de réglage, en particulier un réglage de confort, de sa longueur, conformé pour permettre une légère adaptation de la longueur du bracelet, en complément d'un réglage initial conventionnel, comme expliqué précédemment.The invention is based on a combined guidance and attachment system. The guidance and attachment system of the length adjusting device according to the first embodiment of the invention participates in a function of adjusting the length of a bracelet within a clasp, as represented by the figure 1 , and implementing an architecture close to the solution described by the document EP0819391 . The end of such a bracelet is connected to an adjustment device, in particular a comfort adjustment, of its length, shaped to allow a slight adaptation of the length of the bracelet, in addition to a conventional initial adjustment, as explained previously.

Un fermoir 2 à lames déployantes, comprend deux lames 2a, 2b, articulées l'une à l'autre autour d'un axe 3. L'une de ces lames, la lame 2a, est articulée à une première extrémité 1a d'un bracelet 1, tandis que la deuxième extrémité 1b de ce bracelet est articulée à un couvercle 24 du fermoir muni de deux parois latérales parallèles 2c1, 2c2, formant un capot sous lequel les lames 2a, 2b, se replient. Les deux parois latérales parallèles 2c1, 2c2, de ce couvercle 24 comportent deux séries d'alésages 4 respectives qui se font face deux à deux, destinées à recevoir un axe de pivotement, comme cela va être détaillé ci-dessous.A clasp 2 with deploying blades, comprises two blades 2a, 2b, hinged to each other about an axis 3. One of these blades, the blade 2a, is articulated at a first end 1a of a bracelet 1, while the second end 1b of this bracelet is articulated to a cover 24 of the clasp provided with two parallel side walls 2c1, 2c2, forming a cover under which the blades 2a, 2b, fold back. The two parallel side walls 2c1, 2c2, of this cover 24 comprise two respective series of bores 4 which face each other in pairs, intended to receive a pivot axis, as will be detailed below.

Le système de guidage et d'accrochage 10 appartenant au premier mode de réalisation de l'invention, particulièrement visible sur la figure 5, est agencé à la deuxième extrémité 1b du bracelet, autour d'un axe A1, comme cela va être détaillé plus en détail. Ce système de guidage et d'accrochage forme d'abord un axe d'articulation pour des mailles de réglage 23, 23' agencées sous le couvercle 24 du fermoir. Ces mêmes mailles de réglage 23, 23' sont liées par un deuxième axe de pivotement 26, agencé autour d'un deuxième axe A2, notamment visible sur la figure 2, distinct de l'axe A1 du système de guidage et d'accrochage 10, autour duquel est montée mobile en rotation une maille d'extrémité 25 présente à l'extrémité 1b du bracelet 1.The guidance and attachment system 10 belonging to the first embodiment of the invention, particularly visible on the figure 5 , is arranged at the second end 1b of the bracelet, around an axis A1, as will be detailed in more detail. This guide and attachment system first forms an articulation axis for adjustment links 23, 23 ′ arranged under the cover 24 of the clasp. These same adjustment meshes 23, 23 ′ are linked by a second pivot axis 26, arranged around a second axis A2, in particular visible on the figure 2 , distinct from the axis A1 of the guide and attachment system 10, around which is rotatably mounted an end link 25 present at the end 1b of the bracelet 1.

La figure 2 illustre cet agencement au niveau de l'extrémité 1b du bracelet en configuration longue. Les mailles de réglage 23, 23' sont positionnées de sorte que le deuxième axe de pivotement 26 se trouve orienté vers l'extérieur du couvercle 24 du fermoir par rapport au premier axe A1. La maille d'extrémité 25 s'étend ainsi vers le bracelet, entre ce deuxième axe de pivotement 26 et un troisième axe 27 disposé vers la deuxième extrémité 1b, auquel est lié le reste du brin de bracelet.The figure 2 illustrates this arrangement at the end 1b of the bracelet in long configuration. The adjustment links 23, 23 ′ are positioned so that the second pivot axis 26 is oriented towards the outside of the cover 24 of the clasp with respect to the first axis A1. The end link 25 thus extends towards the bracelet, between this second pivot axis 26 and a third axis 27 disposed towards the second end 1b, to which the rest of the bracelet strand is linked.

La figure 3 illustre le même agencement en cours d'actionnement, pour passer notamment de la configuration longue à la configuration courte. Pour cela, les mailles de réglage 23, 23' sont actionnées en rotation autour de l'axe A1, pivotant ainsi l'axe de pivotement 26 autour de cet axe A1, vers l'intérieur du couvercle du fermoir, entraînant la maille d'extrémité 25 vers l'intérieur du couvercle, induisant une réduction de la longueur du bracelet 1. Cette rotation des mailles de réglage 23, 23' est poursuivie sur environ un demi-tour, jusqu'à atteindre la configuration courte illustrée par la figure 4.The figure 3 illustrates the same arrangement during actuation, in particular for switching from the long configuration to the short configuration. For this, the adjustment links 23, 23 ′ are actuated in rotation about the axis A1, thereby pivoting the pivot axis 26 around this axis A1, towards the inside of the clasp cover, causing the end link 25 towards the inside of the cover, inducing a reduction in the length of the strap 1. This rotation of the adjustment meshes 23, 23 ′ is continued for about half a turn, until reaching the short configuration illustrated by the figure 4 .

Le système de guidage et d'accrochage 10 du dispositif de réglage de longueur selon le premier mode de réalisation est agencé autour de l'axe A1 et remplit la première fonction d'articulation des mailles de réglage 23, 23' et une deuxième fonction d'accrochage élastique permettant le maintien stable de la configuration courte mentionnée précédemment, comme cela va être détaillé ci-dessous.The guide and attachment system 10 of the length adjustment device according to the first embodiment is arranged around the axis A1 and fulfills the first function of articulation of the adjustment meshes 23, 23 ′ and a second function d elastic coupling allowing stable maintenance of the short configuration mentioned above, as will be detailed below.

La figure 5 représente l'agencement par une vue en coupe selon un plan transverse vertical, au niveau de l'axe A1 du système de guidage et d'accrochage 10.The figure 5 represents the arrangement in a sectional view along a vertical transverse plane, at the level of the axis A1 of the guidance and attachment system 10.

Le système de guidage et d'accrochage 10 comprend d'abord une barrette 12, sensiblement cylindrique, s'étendant transversalement sur toute la largeur du fermoir, agencée autour de l'axe A1 central, et comprenant des pièces d'extrémité 13, 13' respectivement, logées dans des alésages 4 des parois latérales 2c1, 2c2 du couvercle 24 du fermoir. Un ressort de maintien 14 est disposé dans une tige 120 tubulaire entre les deux pièces d'extrémité 13, 13', en configuration comprimée, le long de l'axe A1, pour permettre le montage et démontage de la barrette 12 et son maintien stable en configuration de fonctionnement. La tige 120 comprend une surface périphérique, formant une surface de guidage 11, 11', autour de laquelle est agencée respectivement la rotation des mailles de réglage 23, 23', notamment par l'intermédiaire d'une surface complémentaire formée par un alésage de ces mailles de réglage. Ainsi, la barrette 12 forme un dispositif de guidage du système de guidage et d'accrochage 10. La maille 23 comprend donc un alésage débouchant pour le passage de la barrette 12.The guide and attachment system 10 first comprises a bar 12, substantially cylindrical, extending transversely over the entire width of the clasp, arranged around the central axis A1, and comprising end pieces 13, 13 'respectively, housed in bores 4 of the side walls 2c1, 2c2 of the cover 24 of the clasp. A retaining spring 14 is disposed in a tubular rod 120 between the two end pieces 13, 13 ', in compressed configuration, along the axis A1, to allow the assembly and disassembly of the bar 12 and its stable maintenance in operating configuration. The rod 120 comprises a peripheral surface, forming a guide surface 11, 11 ', around which the rotation of the adjustment meshes 23, 23' is respectively arranged, in particular by means of a complementary surface formed by a bore of these adjustment meshes. Thus, the bar 12 forms a device for guiding the guidance and attachment system 10. The mesh 23 therefore comprises a through bore for the passage of the bar 12.

D'autre part, le système de guidage et d'accrochage comprend un tube ressort 15, disposé autour de la barrette 12, en position centrale. Ce tube ressort 15 forme un tube de compression. Il a pour axe le même axe A1 que la barrette 12. Il est donc agencé coaxialement à la barrette 12, qu'il entoure. Ce tube ressort 15 forme un dispositif d'accrochage du système de guidage et d'accrochage 10, qui remplit la deuxième fonction d'accrochage élastique. Pour cela, au moins une portion du tube ressort 15 est prévue pour être compressée sous l'actionnement de la maille d'extrémité 25, plus particulièrement sous l'actionnement d'un cran 22 de cette maille d'extrémité 25, selon ce mode de réalisation, en configuration courte du bracelet. Cette compression du tube engendre sa déformation élastique de sa paroi périphérique dans une direction sensiblement perpendiculaire à l'axe A1, donc en direction de la barrette 12. Cette coopération avec la maille d'extrémité 25 assure l'accrochage de cette maille d'extrémité 25 et le maintien stable de l'ensemble de l'agencement en configuration courte. Une traction volontaire de cette maille d'extrémité 25 avec une force prédéterminée, lui permet d'échapper à son accrochage élastique et de revenir en configuration longue du bracelet.On the other hand, the guidance and attachment system comprises a spring tube 15, disposed around the bar 12, in the central position. This spring tube 15 forms a compression tube. Its axis is the same axis A1 as the bar 12. It is therefore arranged coaxially with the bar 12, which it surrounds. This spring tube 15 forms an attachment device for the guidance and attachment system 10, which fulfills the second function of elastic attachment. For this, at least a portion of the spring tube 15 is provided to be compressed under the actuation of the end mesh 25, more particularly under the actuation of a notch 22 of this end mesh 25, according to this mode. of realization, in short configuration of the bracelet. This compression of the tube generates its elastic deformation of its peripheral wall in a direction substantially perpendicular to the axis A1, therefore in the direction of the bar 12. This cooperation with the end mesh 25 ensures the attachment of this end mesh 25 and the stable maintenance of the entire arrangement in a short configuration. Voluntary pulling of this end link 25 with a predetermined force allows it to escape its elastic hooking and to return to the long configuration of the bracelet.

La liaison entre le tube ressort 15 et la barrette 12 du système de guidage et d'accrochage 10 est telle que le tube ressort 15 est indépendant de la barrette 12 et inversement. Notamment, le tube ressort 15 présente, à chacune de ses extrémités, une portion 16, 16' dotée d'une surface de guidage, qui est prévue pour coopérer avec une surface complémentaire de guidage des mailles de réglage 23, 23', mise en œuvre par exemple par un alésage 230, 230' de ces mailles. Ainsi, le tube ressort 15 est disposé et dimensionné de telle sorte que le diamètre intérieure du tube ressort 15, une fois comprimé, ne rentre pas en collision avec la périphérie extérieure de la barrette 12. Sa déformation élastique est donc libre, et n'a pas d'impact sur la barrette 12, et ne nuit pas à sa fonction de guidage. Inversement, la barrette 12 n'a pas d'influence sur la fonction élastique du tube ressort 15 dans son fonctionnement de guidage.The connection between the spring tube 15 and the bar 12 of the guidance and attachment system 10 is such that the spring tube 15 is independent of the bar 12 and vice versa. In particular, the spring tube 15 has, at each of its ends, a portion 16, 16 'provided with a guide surface, which is designed to cooperate with a complementary surface for guiding the adjustment meshes 23, 23', work for example by a bore 230, 230 'of these meshes. Thus, the spring tube 15 is arranged and dimensioned so that the internal diameter of the spring tube 15, once compressed, does not collide with the external periphery of the bar 12. Its elastic deformation is therefore free, and has no impact on the bar 12, and does not harm its guiding function. Conversely, the bar 12 has no influence on the elastic function of the spring tube 15 in its guiding operation.

Ainsi, les deux dispositifs de guidage et d'accrochage du système de guidage et d'accrochage 10 sont combinés entre eux de sorte à former un dispositif compact, d'encombrement minimal, et qui ne nuit pas à l'esthétique du fermoir ou du bracelet. Ils permettent par ailleurs d'être assemblés et intégrés facilement au sein du bracelet.Thus, the two guidance and attachment devices of the guidance and attachment system 10 are combined together so as to form a compact device, of minimal bulk, and which does not harm the aesthetics of the clasp or of the bracelet. They also allow them to be assembled and integrated easily within the bracelet.

D'autre part, les deux dispositifs respectivement de guidage et d'accrochage du système de guidage et d'accrochage sont indépendants entre eux. Cela permet de remplir la fonction d'accrochage élastique de manière fiable et répétée dans le temps, indépendamment des éventuelles variations du dispositif de guidage. De plus, la fonction d'accrochage élastique repose sur une déformation élastique d'au moins un composant ressort du système de guidage et d'accrochage, de manière indépendante de la partie de guidage, c'est-à-dire que cette déformation n'a pas d'impact sur les composants du premier dispositif participant à la fonction de guidage. La force de tenue est définie uniquement par la déformation élastique du tube ressort 15, sans risque de déformation plastique de la barrette 12, ni risque de mise en flexion de la barrette 12. La force de tenue est par ailleurs indépendante du matériau de la maille d'extrémité 25, notamment du matériau du cran 22 de la maille d'extrémité 25, qui vient directement coopérer avec le tube ressort 15 lors de la mise en œuvre de l'accrochage de la maille 25 par le tube ressort 15.On the other hand, the two devices respectively for guiding and hooking the guide and hooking system are independent from each other. This makes it possible to fulfill the elastic latching function reliably and repeatedly over time, regardless of any variations in the guide device. In addition, the elastic attachment function is based on an elastic deformation of at least one spring component of the guidance and attachment system, independently of the guide part, that is to say that this deformation n has no impact on the components of the first device participating in the guidance function. The holding force is defined only by the elastic deformation of the spring tube 15, without risk of plastic deformation of the bar 12, or risk of bending of the bar 12. The holding force is also independent of the mesh material of end 25, in particular of the material of the notch 22 of the end mesh 25, which comes directly to cooperate with the spring tube 15 during the implementation of the attachment of the mesh 25 by the spring tube 15.

Comme cela ressort de la description précédente, l'indépendance des fonctions de guidage et d'accrochage du système de guidage et d'accrochage est obtenue par la séparation physique de composants mettant en œuvre ces deux fonctions. En effet, de tels composants sont distincts, ce qui permet de choisir des matériaux différents et optimisés pour remplir chaque fonction, et de remplir chaque fonction sans subir l'influence des composants utilisés pour remplir l'autre fonction.As is apparent from the previous description, the independence of the guidance and attachment functions of the guidance and attachment system is obtained by the physical separation of components implementing these two functions. Indeed, such components are distinct, which makes it possible to choose different and optimized materials to fulfill each function, and to fulfill each function without being influenced by the components used to fulfill the other function.

A titre d'exemple, les éléments 120, 13, 13' de la barrette 12 de guidage peuvent se trouver dans un matériau de type acier 904L ou en or. Le tube ressort 15 peut se trouver dans un matériau ressort de type Nivaflex®, ou encore en un alliage super élastique de nickel et de titane tel que le Nitinol. La géométrie du tube peut bien sûr être adaptée en vue d'optimiser ses caractéristiques mécaniques. Par exemple, le tube peut être fendu, notamment de part et d'autre, ou encore présenter une ou plusieurs découpes. De manière complémentaire, la fonction d'accrochage élastique est aussi indépendante des matériaux employés pour les mailles de réglage et la maille d'extrémité. Ainsi, la force de tenue générée par la fonction d'accrochage est constante dans le temps, quel que soit le bracelet utilisé. A titre d'exemple, les mailles du bracelet coopérant avec le système de guidage et d'accrochage, notamment la ou les mailles de réglage et la maille d'extrémité peuvent être en acier 904L, en or, ou encore en platine.By way of example, the elements 120, 13, 13 ′ of the guide strip 12 can be found in a material of the 904L steel type or in gold. The spring tube 15 can be in a spring material of the Nivaflex® type, or in a super elastic alloy of nickel and titanium such as Nitinol. The geometry of the tube can of course be adapted in order to optimize its mechanical characteristics. For example, the tube can be split, in particular on either side, or even have one or more cutouts. In addition, the elastic hooking function is also independent of the materials used for the adjustment meshes and the end mesh. Thus, the holding force generated by the attachment function is constant over time, whatever the bracelet used. By way of example, the links of the bracelet cooperating with the guide and attachment system, in particular the adjustment link or links and the end link may be made of 904L steel, gold, or even platinum.

Les figures 6 à 9 illustrent un système de guidage et d'accrochage 10 d'un dispositif de réglage de longueur selon un deuxième mode de réalisation de l'invention. Ce dispositif est de même intégré dans un couvercle 24 de fermoir et participe à un réglage de longueur du bracelet. Ce réglage diffère de la solution décrite en référence avec le premier mode de réalisation notamment en ce que le système de guidage et d'accrochage 10 appartenant au premier mode de réalisation est mobile dans des rainures ou glissières 6 longitudinales agencées dans les parois verticales 2c1, 2c2 du couvercle 24.The figures 6 to 9 illustrate a guide and attachment system 10 of a length adjusting device according to a second embodiment of the invention. This device is likewise integrated in a clasp cover 24 and participates in an adjustment of the length of the bracelet. This adjustment differs from the solution described with reference to the first embodiment, in particular in that the guidance and attachment system 10 belonging to the first embodiment is movable in longitudinal grooves or slides 6 arranged in the vertical walls 2c1, 2c2 of the cover 24.

Les figures 6 et 7 illustrent l'agencement en configuration courte du bracelet. Des mailles de réglage 23, 23' latérales sont positionnées de sorte que le deuxième axe de pivotement 26 se trouve orienté vers l'intérieur du couvercle 24 du fermoir par rapport au premier axe A1. La maille d'extrémité 25 du bracelet et l'axe de pivotement 26 sont ainsi en position reculée en regard de l'extrémité 1b du bracelet. Contrairement au mode de réalisation décrit précédemment, la maille d'extrémité 25 comprend un doigt 28 coopérant avec une denture 8 agencée dans le fond 240 du couvercle, pour bloquer le déplacement, correspondant sensiblement à un mouvement de translation, du dispositif de réglage de longueur du bracelet. Les dents de cette denture 8 définissent plusieurs positions de la maille d'extrémité 25 du bracelet en regard du couvercle 24 du fermoir et donc plusieurs longueurs du bracelet. Sur les figures 6 et 7, le doigt 28 coopère avec la première dent de la denture 8 à partir de l'intérieur du couvercle 24, ce qui correspond à la position la plus courte du bracelet.The figures 6 and 7 illustrate the arrangement in a short configuration of the bracelet. Side adjustment meshes 23, 23 ′ are positioned so that the second pivot axis 26 is oriented towards the inside of the cover 24 of the clasp with respect to the first axis A1. The end mesh 25 of the bracelet and the pivot axis 26 are thus in the retracted position opposite the end 1b of the bracelet. Unlike the embodiment described above, the end mesh 25 comprises a finger 28 cooperating with a toothing 8 arranged in the bottom 240 of the cover, to block the movement, corresponding substantially to a translational movement, of the length adjusting device of the bracelet. The teeth of this toothing 8 define several positions of the end mesh 25 of the bracelet opposite the cover 24 of the clasp and therefore several lengths of the bracelet. On the figures 6 and 7 , the finger 28 cooperates with the first tooth of the toothing 8 from the inside of the cover 24, which corresponds to the shortest position of the bracelet.

La figure 8 illustre le dispositif de réglage en cours d'actionnement pour procéder à un réglage de longueur. La maille d'extrémité 25 du bracelet est manuellement tournée autour de son axe de pivotement 26 agencé entre les mailles de réglage 23, 23', avec une force prédéterminée permettant de la dégager de son accrochage élastique dans le dispositif d'accrochage du système de guidage et d'accrochage, tout en libérant son doigt 28 de la denture 8 du couvercle du fermoir. Le dispositif de réglage est ainsi libre de se déplacer longitudinalement dans les rainures latérales du fermoir. Lorsqu'une longueur de bracelet satisfaisante est atteinte, la maille d'extrémité 25 est rabattue vers le fond 240 du couvercle, de sorte qu'elle vienne s'accrocher élastiquement dans le dispositif d'accrochage du système de guidage et d'accrochage 10, tout en bloquant sa position longitudinale par le positionnement de son doigt 28 dans une nouvelle dent de la denture 8 du fermoir.The figure 8 illustrates the adjustment device during actuation for adjusting the length. The end link 25 of the bracelet is manually rotated around its pivot axis 26 arranged between the adjustment links 23, 23 ', with a predetermined force allowing it to be released from its elastic attachment in the attachment device of the system. guide and attachment, while releasing his finger 28 from the teeth 8 of the clasp cover. The adjustment device is thus free to move longitudinally in the lateral grooves of the clasp. When a satisfactory length of bracelet is reached, the end link 25 is folded down towards the bottom 240 of the cover, so that it comes to hook elastically in the hooking device of the guide and hooking system 10 , while blocking its longitudinal position by positioning its finger 28 in a new tooth of the toothing 8 of the clasp.

Le système de guidage et d'accrochage 10 est plus particulièrement illustré par la coupe transversale de la figure 9. Ce système de guidage et d'accrochage 10 est très proche de celui du premier mode de réalisation. Il comprend une barrette 12 qui se distingue de la barrette du premier mode de réalisation en ce qu'elle est guidée, à ses extrémités latérales, par des patins 17, 17' logés dans des rainures agencées longitudinalement dans les parois verticales 2c1, 2c2 du couvercle 24. Ainsi, la barrette 12 est susceptible d'être guidée par les rainures, selon un mouvement qui suit la courbure du couvercle 24, et qui s'approche d'une translation longitudinale.The guide and attachment system 10 is more particularly illustrated by the cross section of the figure 9 . This guide and attachment system 10 is very close to that of the first embodiment. It comprises a bar 12 which differs from the bar of the first embodiment in that it is guided, at its lateral ends, by pads 17, 17 'housed in grooves arranged longitudinally in the vertical walls 2c1, 2c2 of the cover 24. Thus, the bar 12 is capable of being guided by the grooves, according to a movement which follows the curvature of the cover 24, and which approaches a longitudinal translation.

Un tube ressort 15 est disposé coaxialement à la barrette 12, de manière similaire au premier mode de réalisation. La maille 25 peut également comporter un cran 22 dont la conformation est prévue pour générer des forces de compression adéquates du tube ressort 15.A spring tube 15 is arranged coaxially with the bar 12, in a similar manner to the first embodiment. The mesh 25 may also include a notch 22 whose conformation is provided to generate adequate compression forces of the spring tube 15.

A l'instar du dispositif appartenant au premier mode de réalisation, la liaison entre le tube ressort 15 et la barrette 12 du système de guidage et d'accrochage 10 est telle que le tube ressort 15 est indépendant de la barrette 12 et inversement. Notamment, le tube ressort 15 présente, à chacune de ses extrémités, une portion 16, 16' dotée d'une surface de guidage, qui est prévue pour coopérer avec une surface complémentaire de guidage des mailles de réglage 23, 23', mise en œuvre par exemple par un alésage 230, 230' de ces mailles. Ainsi, le tube ressort 15 est disposé et dimensionné de telle sorte que le diamètre intérieur du tube ressort 15, une fois comprimé, ne rentre pas en collision avec la périphérie extérieure de la barrette 12. Sa déformation élastique est donc libre, n'a pas d'impact sur la barrette 12, et ne nuit pas à sa fonction de guidage. Inversement, la barrette 12 n'a pas d'influence sur la fonction élastique du tube ressort 15 dans son fonctionnement de guidage.Like the device belonging to the first embodiment, the connection between the spring tube 15 and the bar 12 of the guide and attachment system 10 is such that the spring tube 15 is independent of the bar 12 and vice versa. In particular, the spring tube 15 has, at each of its ends, a portion 16, 16 'provided with a guide surface, which is designed to cooperate with a complementary surface for guiding the adjustment meshes 23, 23', work for example by a bore 230, 230 'of these meshes. Thus, the spring tube 15 is arranged and dimensioned so that the internal diameter of the spring tube 15, once compressed, does not collide with the outer periphery of the bar 12. Its elastic deformation is therefore free, has no impact on the bar 12, and does not harm its guiding function. Conversely, the bar 12 has no influence on the elastic function of the spring tube 15 in its guiding operation.

Dans les deux premiers modes de réalisation du dispositif de réglage de longueur, le guidage du tube ressort 15 par les mailles de réglage 23, 23' peut être effectué avec un jeu défini de telle façon que le tube ressort 15 puisse être entraîné en rotation ou non sous l'effet du cran, avant et/ou pendant la compression du tube ressort 15.In the first two embodiments of the length adjustment device, the guide of the spring tube 15 by the adjustment links 23, 23 ′ can be carried out with a clearance defined in such a way that the spring tube 15 can be driven in rotation or not under the effect of the notch, before and / or during the compression of the spring tube 15.

Les figures 10 à 14 illustrent un système de guidage et d'accrochage 30 appartenant à un troisième mode de réalisation du dispositif de réglage de longueur, qui est semblable à celui représenté en figure 1. Le dispositif de réglage de longueur d'un bracelet fonctionne de manière semblable à celui décrit en référence avec le premier mode de réalisation.The figures 10 to 14 illustrate a guidance and attachment system 30 belonging to a third embodiment of the length adjustment device, which is similar to that shown in figure 1 . The device for adjusting the length of a bracelet operates in a similar manner to that described with reference to the first embodiment.

Le système de guidage et d'accrochage 30, particulièrement représenté sur la figure 10, comprend une barrette 32 comprenant un premier axe creux 34 doté d'une périphérie extérieure 33 destinée à guider une maille de réglage 23. La barrette 32 comprend un deuxième axe creux 39, logé au sein du premier axe creux 34, destiné à relier une maille de réglage 23 à un couvercle 24 de fermoir, notamment par le biais d'un tenon 38 disposé à une première extrémité de la barrette 32. Les deux axes creux sont solidarisés par un rivetage 37. Un ressort hélicoïdal 35 est intégré au sein du volume creux de la barrette 32, en configuration précontrainte. Il coopère avec une bille 45 positionnée en partie au sein du volume creux de la barrette, de manière mobile, et en partie en saillie à l'extérieur de la barrette 32, au niveau de sa deuxième extrémité. Au repos, tel que représenté par la figure 10, le ressort hélicoïdal 35 exerce un effort sur la bille 45, orienté vers l'extérieur de la barrette 32. La bille 45 est ainsi maintenue en butée contre une paroi latérale intérieure de la barrette tout en faisant saillie au niveau de la deuxième extrémité de la barrette 32.The guidance and attachment system 30, particularly shown in the figure 10 , comprises a bar 32 comprising a first hollow axis 34 provided with an external periphery 33 intended to guide an adjustment mesh 23. The bar 32 comprises a second hollow axis 39, housed within the first hollow axis 34, intended to connect a adjustment mesh 23 to a clasp cover 24, in particular by means of a tenon 38 disposed at a first end of the bar 32. The two hollow axes are secured by riveting 37. A helical spring 35 is integrated within the hollow volume of the bar 32, in prestressed configuration. It cooperates with a ball 45 positioned partly within the hollow volume of the bar, in a movable manner, and partly projecting outside the bar 32, at its second end. At rest, as represented by the figure 10 , the helical spring 35 exerts a force on the ball 45, oriented towards the outside of the bar 32. The ball 45 is thus held in abutment against an inner side wall of the bar while projecting at the second end of the bar 32.

La figure 11 illustre un dispositif de réglage de la longueur d'un bracelet, qui intègre deux dispositifs de guidage et d'accrochage 30, 30' tels que décrits ci-dessus pour relier deux mailles de réglage 23, 23' au couvercle 24 du fermoir, selon un axe de rotation A1. La figure 11 illustre la configuration longue du bracelet, dans laquelle un deuxième axe de rotation A2 lié aux deux mailles de réglage 23, 23' est orienté vers l'extérieur du fermoir. Une maille d'extrémité 25 du bracelet est fixée à un axe de pivotement 26 agencé autour de ce second axe de rotation A2.The figure 11 illustrates a device for adjusting the length of a bracelet, which incorporates two guide and hooking devices 30, 30 ′ as described above to connect two adjustment links 23, 23 'to the cover 24 of the clasp, along an axis of rotation A1. The figure 11 illustrates the long configuration of the bracelet, in which a second axis of rotation A2 linked to the two adjustment links 23, 23 'is oriented towards the outside of the clasp. An end link 25 of the bracelet is fixed to a pivot axis 26 arranged around this second axis of rotation A2.

La figure 12 illustre en vue de coupe la configuration courte du dispositif de réglage de la longueur d'un bracelet. Elle est obtenue par la rotation arrière des mailles de réglage, autour de l'axe A1, selon un guidage autour de la surface périphérique de la barrette 32. Le principe est similaire à celui décrit en référence avec le premier mode de réalisation.The figure 12 illustrates in section view the short configuration of the device for adjusting the length of a bracelet. It is obtained by the rear rotation of the adjustment meshes, around the axis A1, according to a guide around the peripheral surface of the bar 32. The principle is similar to that described with reference to the first embodiment.

La figure 13 illustre la fonction d'accrochage élastique du système de guidage et d'accrochage 30 en configuration courte du dispositif de réglage de longueur du bracelet. Dans cette configuration, la maille d'extrémité 25 vient coopérer avec les billes 45 du système de guidage et d'accrochage 30. Cette maille d'extrémité 25 présente la particularité de comporter au moins un cran 29, 29' agencé en creux dans une de ses parois latérales. Chaque cran 29, 29' peut par exemple prendre la forme d'une découpe délimitée par un ou plusieurs flancs inclinés vis-à-vis des parois latérales de la maille 25. Ainsi, l'actionnement du dispositif de réglage pour faire passer le bracelet de sa configuration longue à sa configuration courte induit la compression de chacun des ressorts hélicoïdaux 35 par le contact entre les parois de la maille d'extrémité 25 et les billes 45. Ces dernières sont repoussées vers l'intérieur du volume creux de la barrette 32, à l'encontre de l'effort de poussée des ressorts hélicoïdaux 35. Cet actionnement est illustré par la figure 14, qui représente une situation intermédiaire dans laquelle lesdites parois agissent sur les billes. En position finale, illustrée par la figure 13, les billes 45, 45' sont logées au sein d'un cran 29, 29' respectif des deux parois latérales de la maille d'extrémité 25. Les ressorts 45 comprimés sont prévus pour garantir le maintien stable de cette configuration et remplir ainsi la fonction d'accrochage élastique.The figure 13 illustrates the elastic attachment function of the guidance and attachment system 30 in the short configuration of the strap length adjustment device. In this configuration, the end mesh 25 comes to cooperate with the balls 45 of the guidance and attachment system 30. This end mesh 25 has the particularity of comprising at least one notch 29, 29 'arranged in a hollow in a of its side walls. Each notch 29, 29 ′ can for example take the form of a cutout delimited by one or more inclined flanks with respect to the side walls of the mesh 25. Thus, the actuation of the adjustment device to pass the bracelet from its long configuration to its short configuration induces the compression of each of the helical springs 35 by the contact between the walls of the end mesh 25 and the balls 45. The latter are pushed back towards the interior of the hollow volume of the bar 32 , against the thrust force of the coil springs 35. This actuation is illustrated by the figure 14 , which represents an intermediate situation in which said walls act on the balls. In the final position, illustrated by the figure 13 , the balls 45, 45 'are housed within a notch 29, 29' respective of the two side walls of the end mesh 25. The compressed springs 45 are provided to guarantee the stable maintenance of this configuration and thus fulfill the elastic hooking function.

Ainsi, comme cela ressort de la description précédente, le système de guidage et d'accrochage réunit aussi deux dispositifs distincts, respectivement de guidage et d'accrochage. Le dispositif de guidage comprend la barrette 32, et plus précisément au moins une partie de sa surface périphérique, ainsi qu'éventuellement sa première extrémité. Le dispositif d'accrochage comprend le ressort hélicoïdal 35 et la bille 45. Les deux fonctions de guidage et d'accrochage sont ainsi assurées de manière indépendante entre elles. La fonction d'accrochage est de plus indépendante des mailles utilisées, notamment du matériau utilisé pour les mailles du bracelet. La force de tenue est définie uniquement par la déformation élastique des ressorts 35, sans risque de déformation plastique du ou des crans, ni risque de mise en flexion de la barrette 12.Thus, as emerges from the preceding description, the guidance and attachment system also brings together two separate devices, respectively for guidance and attachment. The guide device comprises the bar 32, and more precisely at least part of its peripheral surface, as well as possibly its first end. The attachment device comprises the helical spring 35 and the ball 45. The two guiding and attachment functions are thus provided independently of each other. The hooking function is moreover independent of the meshes used, in particular of the material used for the meshes of the bracelet. The holding force is defined only by the elastic deformation of the springs 35, without risk of plastic deformation of the notch (s), or risk of bending of the bar 12.

D'autre part, la barrette 32 est sensiblement cylindrique, autour d'un axe A1, et assure un guidage en rotation d'une maille de réglage 23 autour de cet axe A1. De plus, le ressort hélicoïdal 35 et la bille 45 sont agencés le long de ce même axe A1, le ressort travaillant en compression dans la direction de l'axe A1. La bille 45 est mobile dans la direction de l'axe A1. Le ressort hélicoïdal 35 et la bille 45 sont ainsi agencés autour de l'axe A1. La barrette 32 entoure le ressort hélicoïdal et la bille 45. L'axe A1 forme sensiblement un axe de symétrie pour le dispositif d'accrochage élastique.On the other hand, the bar 32 is substantially cylindrical, around an axis A1, and provides rotational guidance of an adjustment mesh 23 around this axis A1. In addition, the helical spring 35 and the ball 45 are arranged along this same axis A1, the spring working in compression in the direction of the axis A1. The ball 45 is movable in the direction of the axis A1. The helical spring 35 and the ball 45 are thus arranged around the axis A1. The bar 32 surrounds the helical spring and the ball 45. The axis A1 substantially forms an axis of symmetry for the elastic attachment device.

Dans cette construction, le dispositif de réglage met en œuvre deux systèmes de guidage et d'accrochage 30, 30'. Bien entendu, il est tout à fait possible de mettre en œuvre un dispositif de réglage doté d'un seul système, coopérant avec un seul cran.In this construction, the adjustment device implements two guidance and attachment systems 30, 30 ′. Of course, it is entirely possible to implement an adjustment device provided with a single system, cooperating with a single notch.

Par ailleurs, les billes 45, 45' des systèmes de guidage et d'accrochage 30, 30' peuvent être remplacées par des plots ou tout autre composant dont la géométrie est adaptée pour constituer une interface adéquate entre un ressort et un cran : nous utiliserons donc le terme de bille au sens large, permettant d'inclure des géométries non nécessairement sphériques.Furthermore, the balls 45, 45 ′ of the guidance and attachment systems 30, 30 ′ can be replaced by studs or any other component whose geometry is adapted to constitute an adequate interface between a spring and a notch: we will use therefore the term ball in the broad sense, making it possible to include geometries which are not necessarily spherical.

Les figures 15 à 18 illustrent un système de guidage et d'accrochage 40 appartenant à un quatrième mode de réalisation du dispositif de réglage de longueur d'un bracelet au sein d'un fermoir.The figures 15 to 18 illustrate a guidance and attachment system 40 belonging to a fourth embodiment of the device for adjusting the length of a bracelet within a clasp.

Un tel système de guidage et d'accrochage, particulièrement visible sur la figure 15, comprend une barrette 42 formant un axe creux. Une partie de sa périphérie extérieure 43 est destinée à guider une maille de réglage 23. Un ressort hélicoïdal 35 est intégré au sein du volume creux de la barrette 42, en configuration précontrainte. Le ressort hélicoïdal 35 coopère avec deux billes, une première bille 45 disposée à une première extrémité de la barrette orientée vers une maille d'extrémité 25, et une deuxième bille 46 disposée à une deuxième extrémité de la barrette orientée vers une paroi 2c1, 2c2 du couvercle 24 du fermoir, positionnées en partie au sein du volume creux de la barrette 32, de manière mobile, et en saillie à l'extérieur de la barrette, au niveau de chaque extrémité. Enfin, la barrette 42 comprend une butée mobile 47 entre les deux billes 45, 46. En remarque, dans ce mode de réalisation, comme dans le précédent, les billes peuvent être remplacées par des plots ou tout autre composant dont la géométrie est adaptée pour constituer une interface adéquate entre un ressort et un cran.Such a guidance and attachment system, particularly visible on the figure 15 , comprises a bar 42 forming a hollow axis. Part of its outer periphery 43 is intended to guide an adjustment mesh 23. A helical spring 35 is integrated within the hollow volume of the bar 42, in prestressed configuration. The helical spring 35 cooperates with two balls, a first ball 45 arranged at a first end of the bar oriented towards an end mesh 25, and a second ball 46 arranged at a second end of the bar oriented towards a wall 2c1, 2c2 of the cover 24 of the clasp, positioned partly within the hollow volume of the bar 32, in a mobile manner, and projecting outside the bar, at each end. Finally, the bar 42 includes a movable stop 47 between the two balls 45, 46. Note, in this embodiment, as in the previous one, the balls can be replaced by studs or any other component whose geometry is suitable for constitute an adequate interface between a spring and a notch.

La figure 15 représente un fermoir comprenant deux systèmes de guidage et d'accrochage 40, 40' appartenant au quatrième mode de réalisation. Ces deux systèmes de guidage et d'accrochage sont alignés selon un même axe A1, et coopèrent tous les deux avec une maille d'extrémité 25 en position centrale, de manière similaire au fermoir selon le mode de réalisation précédent. La figure 15 illustre une configuration d'accrochage, dans laquelle les premières billes 45, 45' respectives des deux systèmes de guidage et d'accrochage 40, 40' sont logées dans un cran 29, 29' respectif aménagé dans chaque paroi latérale de la maille d'extrémité 25. Dans cette configuration, chaque système de guidage et d'accrochage 40, 40' assure l'accrochage de la maille d'extrémité 25 et maintient la configuration de réglage choisie de manière stable. D'autre part, les deuxièmes billes 46, 46' respectives des deux systèmes de guidage et d'accrochage 40, 40' sont logées dans des crans 9, 9' formés respectivement, notamment par usinage, sur les parois verticales 2c1, 2c2 du couvercle 24.The figure 15 shows a clasp comprising two guide and attachment systems 40, 40 'belonging to the fourth embodiment. These two guidance and attachment systems are aligned along the same axis A1, and both cooperate with an end link 25 in the central position, similar to the clasp according to the embodiment. previous. The figure 15 illustrates an attachment configuration, in which the first balls 45, 45 'respective of the two guidance and attachment systems 40, 40' are housed in a notch 29, 29 'respective arranged in each side wall of the mesh end 25. In this configuration, each guide and attachment system 40, 40 ′ ensures the attachment of the end mesh 25 and maintains the chosen adjustment configuration in a stable manner. On the other hand, the respective second balls 46, 46 'of the two guide and attachment systems 40, 40' are housed in notches 9, 9 'formed respectively, in particular by machining, on the vertical walls 2c1, 2c2 of the cover 24.

Dans ce mode de réalisation particulier, au contraire du précédent, chaque barrette 42, 42' est agencée pour pouvoir se déplacer dans des paires de rainures 6a, 6b et 6a', 6b' formées dans les parois verticales latérales 2c1, 2c2 du couvercle du fermoir, comme dans le second mode de réalisation de l'invention décrit précédemment. Ainsi, les périphéries extérieures 43, 43' des barrettes forment également des deuxièmes surfaces de guidage qui réceptionnent un patin de guidage 17, 17' prévu pour être guidé au sein des paires de rainures 6a, 6b et 6a', 6b' du couvercle du fermoir. Les crans 9, 9' se superposent ainsi à la trajectoire des rainures 6, 6' de façon à définir plusieurs positions longitudinales prédéterminées de la maille 25 vis-à-vis du couvercle 24 de fermoir selon la trajectoire des paires de rainures 6a, 6b et 6a', 6b'. Ainsi, les barrettes 42, 42' sont susceptibles d'être guidées par les rainures, selon un mouvement qui suit la courbure du couvercle 24, et qui s'approche d'une translation longitudinale, et d'être arrêtées en position par les crans 9, 9'.In this particular embodiment, unlike the previous one, each bar 42, 42 'is arranged to be able to move in pairs of grooves 6a, 6b and 6a', 6b 'formed in the vertical side walls 2c1, 2c2 of the cover of the clasp, as in the second embodiment of the invention described above. Thus, the outer peripheries 43, 43 'of the bars also form second guide surfaces which receive a guide shoe 17, 17' intended to be guided within the pairs of grooves 6a, 6b and 6a ', 6b' of the cover of the clasp. The notches 9, 9 'are thus superimposed on the trajectory of the grooves 6, 6' so as to define several predetermined longitudinal positions of the mesh 25 with respect to the clasp cover 24 along the trajectory of the pairs of grooves 6a, 6b and 6a ', 6b'. Thus, the bars 42, 42 'are capable of being guided by the grooves, according to a movement which follows the curvature of the cover 24, and which approaches a longitudinal translation, and of being stopped in position by the notches 9, 9 '.

Dans la configuration représentée par les figures 15 et 16, les parois latérales de la maille d'extrémité 25 exercent une force sur les premières billes 45, 45' des deux systèmes de guidage et d'accrochage. Cette force induit une compression de leurs ressorts 35, 35' internes, et une transmission de force à leurs deuxièmes billes 46, 46', par l'intermédiaire de leurs butées 47, 47'. Ainsi, la maille d'extrémité 25 est élastiquement accrochée par les deux systèmes de guidage et d'accrochage 40, 40', et cet accrochage induit le deuxième effet d'accrochage des deux systèmes dans le couvercle du fermoir. Ainsi, chaque système de guidage et d'accrochage 40, 40' remplit deux fonctions d'accrochage élastique simultanées, avec une maille d'une part et avec le fermoir, en particulier le couvercle 24 de fermoir, d'autre part.In the configuration represented by the Figures 15 and 16 , the side walls of the end mesh 25 exert a force on the first balls 45, 45 ′ of the two guidance and attachment systems. This force induces compression of their internal springs 35, 35 ', and a force transmission to their second balls 46, 46 ', via their stops 47, 47'. Thus, the end link 25 is elastically hooked by the two guide and hooking systems 40, 40 ′, and this hooking induces the second hooking effect of the two systems in the cover of the clasp. Thus, each guide and hooking system 40, 40 ′ fulfills two simultaneous elastic hooking functions, with a mesh on the one hand and with the clasp, in particular the clasp cover 24, on the other hand.

Lorsque la maille centrale 25 est dégagée de son accrochage élastique, elle libère simultanément les deux accrochages susmentionnés, ce qui a pour effet de permettre le déplacement longitudinal des mailles de réglage 23, 23' et de leurs systèmes de guidage et d'accrochage 40, 40' respectifs le long des rainures.When the central mesh 25 is released from its elastic attachment, it simultaneously releases the two abovementioned attachments, which has the effect of allowing the longitudinal displacement of the adjustment meshes 23, 23 ′ and their guidance and attachment systems 40, 40 'respectively along the grooves.

Comme illustré par la figure 17, cette architecture permet un double réglage. En effet, outre le déplacement décrit ci-dessus dans les glissières du fermoir, les mailles de réglage 23, 23' sont de plus mobiles en rotation autour des dispositifs de guidage, ce qui permet d'obtenir le même effet que dans le premier mode de réalisation, à savoir une rotation de la maille d'extrémité 25 en regard des mailles de réglage 23, 23'. A titre d'illustration, la figure 16 représente une configuration courte du bracelet pour une position donnée des deuxièmes billes 46, 46' au sein des crans 9, 9'. La figure 18 représente, quant à elle, une configuration longue du bracelet pour une position donnée des deuxièmes billes 46, 46' au sein des crans 9, 9'. Dans cette configuration, les mailles de réglage 23, 23' sont tournées de 180 degrés par rapport à leur position sur la figure 16, offrant ainsi une extension supplémentaire.As illustrated by the figure 17 , this architecture allows a double adjustment. In fact, in addition to the movement described above in the slides of the clasp, the adjustment links 23, 23 ′ are moreover mobile in rotation around the guide devices, which makes it possible to obtain the same effect as in the first mode. embodiment, namely a rotation of the end mesh 25 opposite the adjustment meshes 23, 23 '. By way of illustration, the figure 16 represents a short configuration of the bracelet for a given position of the second balls 46, 46 'within the notches 9, 9'. The figure 18 represents, for its part, a long configuration of the bracelet for a given position of the second balls 46, 46 'within the notches 9, 9'. In this configuration, the adjustment links 23, 23 'are rotated 180 degrees relative to their position on the figure 16 , thus offering an additional extension.

Les figures 19 et 20 illustrent un système de guidage et d'accrochage 50 appartenant à un cinquième mode de réalisation du dispositif de réglage de longueur, semblable à celui représenté en figure 13. Le dispositif de réglage de longueur d'un bracelet fonctionne de manière semblable à celui décrit en référence avec le troisième mode de réalisation du dispositif de réglage de longueur.The Figures 19 and 20 illustrate a guidance and attachment system 50 belonging to a fifth embodiment of the device for adjusting the length, similar to that shown in figure 13 . The length adjustment device of a bracelet operates in a similar manner to that described with reference to the third embodiment of the length adjustment device.

Le système de guidage et d'accrochage 50, comprend une barrette 52 se présentant comme un premier axe creux 54 doté d'une périphérie extérieure 53 destinée à guider une maille de réglage 23. La barrette 52 forme donc un dispositif de guidage du système de guidage et d'accrochage 50 selon ce mode de réalisation du dispositif de réglage de longueur. Cette barrette 52 est de plus destinée à relier une maille de réglage 23 à un couvercle 24 de fermoir, par le biais d'un tenon 58 disposé à une première extrémité de la barrette 52. Un ressort hélicoïdal 55 est intégré au sein du volume creux de la barrette 52, en configuration précontrainte lorsque le couvercle 24 est assemblé. Il a pour fonction de maintenir de manière stable le tenon 58 au sein d'un alésage 4 agencé dans une paroi verticale du couvercle 24 du fermoir.The guidance and attachment system 50 comprises a bar 52 having the shape of a first hollow axis 54 provided with an external periphery 53 intended to guide an adjustment mesh 23. The bar 52 therefore forms a device for guiding the guide and attachment 50 according to this embodiment of the length adjusting device. This bar 52 is further intended to connect an adjustment link 23 to a clasp cover 24, by means of a pin 58 disposed at a first end of the bar 52. A helical spring 55 is integrated within the hollow volume of the bar 52, in the prestressed configuration when the cover 24 is assembled. Its function is to maintain the pin 58 in a stable manner within a bore 4 arranged in a vertical wall of the cover 24 of the clasp.

Comme cela est visible sur les figures 19 et 20, le dispositif de réglage de la longueur d'un bracelet selon ce mode de réalisation intègre deux barrettes 52, 52' telles que décrites ci-dessus pour relier deux mailles de réglage 23, 23' au couvercle 24 du fermoir, selon un axe de rotation A1. Les mailles de réglage 23, 23' sont de plus reliées à une maille d'extrémité 25, comme dans les modes de réalisation précédents, par une liaison articulée autour d'un axe 26.As can be seen on the Figures 19 and 20 , the device for adjusting the length of a bracelet according to this embodiment incorporates two bars 52, 52 'as described above for connecting two adjustment links 23, 23' to the cover 24 of the clasp, along an axis of rotation A1. The adjustment links 23, 23 ′ are moreover connected to an end link 25, as in the previous embodiments, by a link articulated around an axis 26.

La maille de réglage comprend de plus une ouverture cylindrique dans laquelle est logée une seconde barrette 62, s'étendant transversalement sur toute la largeur de la maille d'extrémité 25. Cette seconde barrette comporte un axe creux 63 qui intègre un ressort hélicoïdal 65, en configuration précontrainte. Ce ressort hélicoïdal 65 coopère avec deux billes 75, 75' positionnées en partie au sein du volume creux de l'axe 63, de manière mobile, et en partie en saillie à l'extérieur de l'axe 63, respectivement au niveau de ses deux extrémités latérales.The adjustment mesh further comprises a cylindrical opening in which is housed a second bar 62, extending transversely over the entire width of the end mesh 25. This second bar has a hollow axis 63 which incorporates a helical spring 65, in prestressed configuration. This helical spring 65 cooperates with two balls 75, 75 ' positioned partly within the hollow volume of the axis 63, in a movable manner, and partly projecting outside the axis 63, respectively at its two lateral ends.

Au repos, tel que représenté par la figure 20, le ressort hélicoïdal 65 exerce un effort sur les billes 75, 75' orienté vers l'extérieur de la barrette 62. Les billes 75, 75' sont ainsi maintenues en butée contre une paroi latérale intérieure de l'axe 63 tout en faisant saillie au niveau de ses deux extrémités. Cette figure 20 illustre le dispositif de réglage de la longueur d'un bracelet, en configuration longue du bracelet, dans laquelle un deuxième axe de rotation A2 lié aux deux mailles de réglage 23, 23' est orienté vers l'extérieur du fermoir. Une maille d'extrémité 25 du bracelet est fixée aux mailles de réglage 23, 23' par un axe de pivotement 26 agencé autour de ce second axe de rotation A2.At rest, as represented by the figure 20 , the helical spring 65 exerts a force on the balls 75, 75 'oriented towards the outside of the bar 62. The balls 75, 75' are thus held in abutment against an inner side wall of the axis 63 while projecting at its two ends. This figure 20 illustrates the device for adjusting the length of a bracelet, in the long configuration of the bracelet, in which a second axis of rotation A2 linked to the two adjustment meshes 23, 23 ′ is oriented towards the outside of the clasp. An end link 25 of the bracelet is fixed to the adjustment links 23, 23 ′ by a pivot axis 26 arranged around this second axis of rotation A2.

La figure 19 illustre le dispositif de réglage de la longueur d'un bracelet, en configuration courte du bracelet, dans laquelle la rotation arrière des mailles de réglage 23, 23', autour de l'axe A1, selon un guidage autour de la surface périphérique des barrettes 52, 52' permet de positionner l'axe de pivotement 26 vers l'intérieur du couvercle 24 de fermoir.The figure 19 illustrates the device for adjusting the length of a bracelet, in the short configuration of the bracelet, in which the rear rotation of the adjustment links 23, 23 ′, around the axis A1, according to a guide around the peripheral surface of the bars 52, 52 'makes it possible to position the pivot axis 26 towards the inside of the clasp cover 24.

Dans cette configuration courte, les billes 75, 75' de la maille d'extrémité 25 viennent coopérer avec des crans 59, 59' agencés en creux dans les parois latérales des mailles de réglage 23, 23', centrés sensiblement sur l'axe A1, dans le prolongement de l'axe des barrettes 52, 52'. Les crans 29, 29' peuvent par exemple prendre la forme d'une découpe délimitée par un ou plusieurs flancs inclinés vis-à-vis des parois latérales des mailles de réglage 23, 23'. Les parois latérales des mailles de réglage 23, 23' sont préférentiellement verticales.In this short configuration, the balls 75, 75 'of the end mesh 25 cooperate with notches 59, 59' arranged in the hollow in the side walls of the adjustment meshes 23, 23 ', centered substantially on the axis A1 , in the extension of the axis of the bars 52, 52 '. The notches 29, 29 'can for example take the form of a cut delimited by one or more sides inclined with respect to the side walls of the adjustment meshes 23, 23'. The side walls of the adjustment meshes 23, 23 ′ are preferably vertical.

Ainsi, l'actionnement du dispositif de réglage pour faire passer le bracelet de sa configuration longue à sa configuration courte induit la compression du ressort hélicoïdal 65 par le contact entre les parois des mailles de réglage 23, 23' et les billes 75, 75'. Ces dernières sont repoussées vers l'intérieur du volume creux de l'axe 63, à l'encontre de l'effort de poussée du ressort hélicoïdal 65. En position finale, illustrée par la figure 19, les billes 75, 75' sont logées au sein d'un cran 29, 29' respectif de deux parois latérales de respectivement les mailles de réglage 23, 23'. Le ressort 65 comprimé est prévu pour garantir le maintien stable de cette configuration et remplir ainsi la fonction d'accrochage élastique. Toutes les barrettes 52, 52', 62 de cette solution sont alignées le long du même axe transversal A1 en configuration courte, donc lors de la mise en œuvre de la fonction d'accrochage. Ainsi, la seconde barrette 62 intégrée au sein de la maille d'extrémité 25 représente un dispositif d'accrochage du système de guidage et d'accrochage 50.Thus, actuation of the adjustment device to pass the bracelet from its long configuration to its short configuration induces the compression of the helical spring 65 by the contact between the walls of the adjustment meshes 23, 23 'and the balls 75, 75' . The latter are pushed back towards the inside of the hollow volume of the axis 63, against the thrust force of the helical spring 65. In the final position, illustrated by the figure 19 , the balls 75, 75 'are housed within a notch 29, 29' respective of two side walls of the adjustment meshes 23, 23 'respectively. The compressed spring 65 is provided to guarantee the stable maintenance of this configuration and thus fulfill the elastic attachment function. All the bars 52, 52 ′, 62 of this solution are aligned along the same transverse axis A1 in short configuration, therefore during the implementation of the hooking function. Thus, the second bar 62 integrated within the end mesh 25 represents a device for hooking up the guide and hooking system 50.

En remarque, les parois verticales du couvercle 24 présentent plusieurs alésages 4 répartis longitudinalement pour offrir un réglage de longueur complémentaire par le simple déplacement des mailles 23, 23' et l'insertion de leurs tenons 58, 58' dans l'un de ces alésages 4 en vis-à-vis.Note, the vertical walls of the cover 24 have several bores 4 distributed longitudinally to provide additional length adjustment by simply moving the meshes 23, 23 'and inserting their pins 58, 58' in one of these bores 4 opposite.

Ainsi, comme cela ressort des explications précédentes, ce cinquième mode de réalisation correspond au troisième mode de réalisation, dans lequel les moyens formant la fonction d'accrochage ont été ré-agencés entre les mailles de réglage 23, 23' et la maille d'extrémité 25, pour atteindre un fonctionnement équivalent et un résultat similaire.Thus, as is apparent from the preceding explanations, this fifth embodiment corresponds to the third embodiment, in which the means forming the latching function have been rearranged between the adjustment meshes 23, 23 'and the mesh end 25, to achieve equivalent operation and a similar result.

Ainsi, comme précédemment, le système de guidage et d'accrochage réunit aussi deux dispositifs distincts, respectivement de guidage et d'accrochage. Le dispositif de guidage comprend au moins une barrette 52, et plus précisément au moins une partie de sa surface périphérique 53. Le dispositif d'accrochage comprend le ressort hélicoïdal 65 et les billes 75, 75'. Les deux fonctions de guidage et d'accrochage sont ainsi assurées de manière indépendante entre elles. La fonction d'accrochage est de plus indépendante des mailles utilisées, notamment du matériau utilisé pour les mailles du bracelet. La force de tenue est définie uniquement par la déformation élastique du ressort 65, sans risque de déformation plastique du ou des crans, ni risque de mise en flexion de la barrette.Thus, as before, the guidance and attachment system also brings together two separate devices, respectively for guidance and attachment. The guide device comprises at least one bar 52, and more precisely at least part of its peripheral surface 53. The attachment device comprises the helical spring 65 and the balls 75, 75 '. The two guidance and attachment functions are thus provided independently of one another. The hooking function is moreover independent of the meshes used, in particular of the material used for the meshes of the bracelet. The holding force is defined only by the elastic deformation of the spring 65, without risk of plastic deformation of the notch or notches, or risk of bending of the bar.

Comme précédemment, les billes 45, 45' des systèmes de guidage et d'accrochage 30, 30' peuvent être remplacées par des plots ou tout autre composant dont la géométrie est adaptée pour constituer une interface adéquate entre un ressort et un cran : nous utiliserons donc le terme de bille au sens large, permettant d'inclure des géométries non nécessairement sphériques.As before, the balls 45, 45 ′ of the guidance and attachment systems 30, 30 ′ can be replaced by studs or any other component whose geometry is adapted to constitute an adequate interface between a spring and a notch: we will use therefore the term ball in the broad sense, making it possible to include geometries which are not necessarily spherical.

Finalement, l'invention repose donc sur l'agencement optimal d'un dispositif d'accrochage élastique, de manière combinée à un dispositif de guidage, pour obtenir un ensemble compact permettant la définition de performances et de résultats esthétiques améliorés. Cette combinaison des deux dispositifs de guidage et d'accrochage se fait avantageusement autour d'un même axe, qui peut être un axe de symétrie et/ou un axe de rotation lors de la mise en œuvre d'une fonction de guidage. En variante, ces deux dispositifs pourraient ne pas présenter une symétrie axiale. Selon une autre variante, leurs axes pourraient être légèrement décalés et parallèles. Avantageusement, un des deux dispositifs entoure au moins partiellement l'autre dispositif. Ces deux dispositifs peuvent être combinés selon un agencement disposé au sein d'un même premier élément, par exemple une première maille de bracelet ou une première lame de fermoir, destiné à un accrochage avec un second élément, comme par exemple une seconde maille de bracelet ou une seconde lame de fermoir. En variante, comme illustré par le cinquième mode de réalisation, le dispositif de guidage peut être disposé dans le premier élément et le dispositif d'accrochage élastique dans le second élément, de sorte que ces deux dispositifs sont alignés sur un même axe transverse dans la position d'accrochage des deux éléments.Finally, the invention therefore relies on the optimal arrangement of an elastic attachment device, in combination with a guide device, to obtain a compact assembly allowing the definition of improved performance and aesthetic results. This combination of the two guidance and attachment devices is advantageously carried out around the same axis, which may be an axis of symmetry and / or an axis of rotation when implementing a guidance function. Alternatively, these two devices might not have axial symmetry. According to another variant, their axes could be slightly offset and parallel. Advantageously, one of the two devices at least partially surrounds the other device. These two devices can be combined according to an arrangement arranged within the same first element, for example a first bracelet link or a first clasp blade, intended for hooking with a second element, such as for example a second bracelet link or a second clasp blade. Alternatively, as illustrated by the fifth embodiment, the guide device can be arranged in the first element and the elastic hooking device in the second element, so that these two devices are aligned on the same transverse axis in the hooking position of the two elements.

Nous entendons par dispositif d'accrochage élastique un dispositif qui comprend au moins un élément ressort, qui se déforme pour accrocher un composant à un ou plusieurs autres composant(s), de manière réversible élastiquement. Cet accrochage élastique peut être pratiqué à l'encontre d'une maille de bracelet, ladite maille participant de manière passive (sans déformation) à l'accrochage. Cet accrochage élastique peut être pratiqué à l'encontre d'une partie fixe d'un bracelet ou d'un fermoir.By elastic hooking device, we mean a device which comprises at least one spring element, which deforms to hook a component to one or more other component (s), in an elastically reversible manner. This elastic attachment can be practiced against a bracelet mesh, said mesh participating passively (without deformation) in the attachment. This elastic attachment can be practiced against a fixed part of a bracelet or a clasp.

D'autre part, nous entendons par dispositif de guidage un dispositif doté d'au moins un moyen, notamment une surface, de guidage d'un composant par rapport à un composant distinct. Ce guidage peut être une rotation et/ou un déplacement dans une rainure, notamment un déplacement correspondant sensiblement à une translation ou un déplacement correspondant à la courbure d'un couvercle de fermoir. Il peut être mis en œuvre avec une maille de bracelet, en particulier une maille de réglage, et/ou un fermoir.On the other hand, we mean by guide device a device provided with at least one means, in particular a surface, for guiding a component with respect to a separate component. This guidance can be a rotation and / or a displacement in a groove, in particular a displacement corresponding substantially to a translation or a displacement corresponding to the curvature of a clasp cover. It can be implemented with a bracelet link, in particular an adjustment link, and / or a clasp.

De plus, selon un mode de réalisation avantageux, les deux dispositifs de guidage et d'accrochage sont indépendants, c'est-à-dire qu'ils mettent en œuvre leurs fonctions respectives sans influence sur l'autre dispositif.In addition, according to an advantageous embodiment, the two guiding and hooking devices are independent, that is to say that they implement their respective functions without influencing the other device.

Naturellement, les agencements précédents ont été décrits à titre d'exemples de réalisation, et d'autres architectures sont imaginables sans sortir du cadre de l'invention. Par exemple, un ou deux systèmes de guidage et d'accrochage ont été utilisés avec deux mailles de réglage : en variante, un nombre différent de systèmes de guidage et d'accrochage pourrait être utilisé, ainsi qu'un nombre différent de mailles de réglage. Les surfaces de guidage prenant part aux systèmes de guidage pourraient également être substituées par des moyens de guidage prenant par exemple la forme de plusieurs arrêtes.Naturally, the preceding arrangements have been described by way of exemplary embodiments, and other architectures can be imagined without departing from the scope of the invention. For example, one or two guidance and attachment systems were used with two adjustment meshes: alternatively, a different number of guidance and attachment systems could be used, as well as a different number of adjustment meshes . The guiding surfaces taking part in the guiding systems could also be substituted by guide means taking for example the form of several edges.

Avantageusement, le système de guidage et d'accrochage est associé à un dispositif de réglage de la longueur d'un bracelet au sein d'un fermoir, tel que décrit précédemment. Avantageusement, une maille de réglage et éventuellement au moins une partie d'une maille d'extrémité se trouve disposé sous un couvercle formé par le fermoir, ce mécanisme restant ainsi caché. Le fermoir peut être de différents types, à deux ou trois lames déployantes.Advantageously, the guidance and attachment system is associated with a device for adjusting the length of a bracelet within a clasp, as described above. Advantageously, an adjustment mesh and possibly at least part of an end mesh is placed under a cover formed by the clasp, this mechanism thus remaining hidden. The clasp can be of different types, with two or three folding blades.

En variante, le système de guidage et d'accrochage pourrait être simplement associé à une lame d'un fermoir, et permettre l'articulation et l'accrochage de cette lame. Le système de guidage et d'accrochage peut ainsi être mis en œuvre pour tout système lié à un bracelet nécessitant des variations de géométrie. En variante encore, le système de guidage et d'accrochage pourrait être associé à une maille ou à un maillon de bracelet, quelle que soit sa position relativement au fermoir.As a variant, the guidance and attachment system could be simply associated with a blade of a clasp, and allow the articulation and the attachment of this blade. The guidance and attachment system can thus be implemented for any system linked to a bracelet requiring variations in geometry. In another variant, the guide and attachment system could be associated with a link or a bracelet link, whatever its position relative to the clasp.

L'invention porte aussi sur un bracelet et/ou un fermoir et/ou une montre bracelet, qui intègre(nt) au moins un système de guidage et d'accrochage, et un dispositif de réglage de longueur.The invention also relates to a bracelet and / or a clasp and / or a wristwatch, which incorporates at least one guidance and attachment system, and a length adjustment device.

Claims (17)

  1. Device for adjusting the length of a bracelet, comprising a guidance and fastening system (10, 30, 40, 50), comprising at least one adjusting link element (23) mounted with the ability to rotate about an axis of rotation (A1) defined by a guidance device of the said guidance and fastening system (10, 30, 40, 50), this guidance and fastening system (10, 30, 40, 50) further comprising an elastic fastening device comprising an elastic property in order to perform an elastic fastening function, these two guidance and elastic fastening devices both being arranged around the said axis (A1), notably upon implementation of the elastic fastening function, the elastic fastening device providing elastic immobilization of an end link element (25) connected to the adjusting link element (23), particularly relative elastic immobilization of the said end link element (25) with respect to the adjusting link element (23), in at least one configuration of the adjustment device, characterized in that the guidance device comprises a bar comprising an end capable of connection with a clasp cover (24) by shoes and/or a stud and comprises an exterior periphery forming a guide surface able to guide an adjusting link element (23) in rotation and/or more or less in translation with respect to a clasp cover (24), in that the adjusting link element (23) comprises a second pivot pin (26) of axis (A2) distinct from the axis (A1) of the guidance and fastening system (10, 30, 40, 50), about which an end link element (25) of a bracelet is arranged, and in that the end link element (25) collaborates with the elastic fastening device which elastically immobilizes it with respect to the adjusting link element (23).
  2. Device for adjusting the length of a bracelet according to the preceding claim, characterized in that the two guidance and elastic fastening devices are able to perform their respective functions independently of one another.
  3. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that the two guidance and elastic fastening devices extend coaxially along the one same axis (A1).
  4. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that the two guidance and elastic fastening devices are formed completely or in part of distinct components.
  5. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that the elastic fastening device comprises a spring element, notably a helical spring (35, 65) or a spring tube (15).
  6. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that the guidance device comprises at least one bar (12, 32, 42, 52).
  7. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that it comprises a bar (12) forming a guide surface over at least part of its periphery, and in the lateral region of the guidance and fastening system, and a spring tube (15) arranged in a central part of the guidance and fastening system and arranged around the bar (12), this spring tube (15) being capable of elastic movement towards the bar (12), without touching the bar (12), in order to perform the elastic fastening function.
  8. Device for adjusting the length of a bracelet according to one of Claims 1 to 6, characterized in that it comprises a bar (32) comprising at least one guide surface on a lateral part of the guidance and fastening system, and a ball (45) able to move parallel to the axis of the bar (32) under the effect of a preloaded spring (35) housed in a hollow volume of the bar (32), the ball (45) being able to project from the bar (32).
  9. Device for adjusting the length of a bracelet according to the preceding claim, characterized in that the bar (32) comprises a stud (38), arranged at one of its two ends, to make it capable of connecting an adjusting link element (23) to a clasp cover (24), and comprises an exterior periphery (33) forming a guide surface capable of guiding such an adjusting link element (23) in pivoting movement with respect to such a clasp cover (24).
  10. Device for adjusting the length of a bracelet according to one of Claims 1 to 6, characterized in that it comprises a bar (42) with at least one guide surface on a peripheral surface and two balls, one (45) central and one (46) lateral, able to move parallel to the axis of the bar (42) at each end of the bar (42) under the effect of the one same preloaded spring (35) and a stop (47) which are housed in a hollow volume of the bar (42), the balls (45, 46) being able to project from the bar.
  11. Device for adjusting the length of a bracelet according to one of the preceding claims, characterized in that the end link element (25) comprises at least one notch (22) which compresses a spring tube (15) of the guidance and fastening system in order to achieve elastic fastening thereof or of which at least one wall comprises a notch (29) which comes into engagement with a ball (45) preloaded by a spring (35) in order to achieve elastic fastening thereof.
  12. Device for adjusting the length of a bracelet according to one of claims 1 to 10, characterized in that the end link element (25) comprises at least one notch (22) which compresses a spring tube (15) of the guidance and fastening system in order to achieve elastic fastening thereof, in that the guidance device of the guidance and fastening system (10) comprises a bar (12) comprising a guide surface collaborating with the at least one adjusting link element (23) in order to guide the pivoting thereof and in that the spring tube (15) has, at at least one of its ends, a portion (16) provided with a guide surface, which is there to collaborate with a complementary guide surface (230) belonging to the at least one adjusting link element (23) so that the spring tube (15) is independent of the bar (12) and vice versa.
  13. Device for adjusting the length of a bracelet according to the preceding claim, characterized in that the at least one adjusting link element (23) comprises a bore that is open-ended for housing the bar (12) and also another bore forming the complementary guide surface (230) and accommodating one end of the spring tube (15).
  14. Device for adjusting the length of a bracelet according to one of Claims 1 to 10, characterized in that the guidance device is arranged inside an adjusting link element (23) and in that the elastic fastening device is arranged within an end link element (25) so that these two guidance and elastic fastening devices are aligned on the one same transverse axis (A1) in a position of mutual fastening of the two devices.
  15. Deployment clasp for bracelet, characterized in that it comprises at least one adjustment device according to one of the preceding claims.
  16. Bracelet, characterized in that it comprises a bracelet length adjustment device according to one of Claims 1 to 14 or a deployment clasp according to the preceding claim.
  17. Wristwatch, characterized in that it comprises at least one bracelet according to the preceding claim.
EP17205066.8A 2016-12-05 2017-12-04 Device for adjusting the length of a bracelet Active EP3329797B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16202129 2016-12-05

Publications (2)

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EP3329797A1 EP3329797A1 (en) 2018-06-06
EP3329797B1 true EP3329797B1 (en) 2020-07-01

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EP17205066.8A Active EP3329797B1 (en) 2016-12-05 2017-12-04 Device for adjusting the length of a bracelet

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US (1) US10722006B2 (en)
EP (1) EP3329797B1 (en)
JP (1) JP7085338B2 (en)
CN (1) CN108143057B (en)

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Also Published As

Publication number Publication date
US20180153267A1 (en) 2018-06-07
CN108143057A (en) 2018-06-12
JP2018118030A (en) 2018-08-02
US10722006B2 (en) 2020-07-28
EP3329797A1 (en) 2018-06-06
CN108143057B (en) 2021-07-09
JP7085338B2 (en) 2022-06-16

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