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EP3854465B1 - Front binding for a gliding device and gliding device provided with such a front binding - Google Patents

Front binding for a gliding device and gliding device provided with such a front binding Download PDF

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Publication number
EP3854465B1
EP3854465B1 EP21152435.0A EP21152435A EP3854465B1 EP 3854465 B1 EP3854465 B1 EP 3854465B1 EP 21152435 A EP21152435 A EP 21152435A EP 3854465 B1 EP3854465 B1 EP 3854465B1
Authority
EP
European Patent Office
Prior art keywords
articulation
control lever
stop
stop according
sphere
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
EP21152435.0A
Other languages
German (de)
French (fr)
Other versions
EP3854465A1 (en
EP3854465C0 (en
Inventor
Pierre MOUYADE
Lucas SUDRE
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.)
Inwild
Original Assignee
Inwild
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
Priority claimed from FR2001367A external-priority patent/FR3106501B1/en
Application filed by Inwild filed Critical Inwild
Publication of EP3854465A1 publication Critical patent/EP3854465A1/en
Application granted granted Critical
Publication of EP3854465B1 publication Critical patent/EP3854465B1/en
Publication of EP3854465C0 publication Critical patent/EP3854465C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0807Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings for both towing and downhill skiing
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • A63C9/08528Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a longitudinal axis
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08564Details of the release mechanism using cam or slide surface
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08571Details of the release mechanism using axis and lever
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08578Details of the release mechanism using a plurality of biasing elements
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08585Details of the release mechanism using transverse biasing element
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/086Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings using parts which are fixed on the shoe of the user and are releasable from the ski binding

Definitions

  • the present invention relates to the technical field of sliding equipment bindings.
  • the sliding machines covered by the invention are intended in particular for the practice of touring skiing or surfing, telemarking as well as Nordic skiing and cross-country skiing.
  • the invention relates more particularly to a front stop belonging to the attachment of a sliding machine, as well as a sliding machine equipped with such a front stop.
  • the front stop fitted to the sliding machines, covered by the invention ensures a connection of the front end of the user's shoe with the ski.
  • This stop in a so-called hiking mode, allows the user's shoe to pivot around a transverse axis, located at the front of the foot. This rotation allows the heel to separate from the machine, in particular the ski board. This therefore allows the user to exert an optimal pushing effort, particularly during an ascent phase.
  • the European patent application EP 0 199 098 proposed a binding for touring skis, including a front stop comprising two clamping jaws. Each of the latter, which generally has an L shape, is articulated around a longitudinal axis of the ski. At their upper end these jaws are equipped with clamping lugs, which penetrate into holes in the ski boot.
  • the aforementioned stop is movable between two positions, namely firstly an active position in which it comes into contact with the shoe, so as to position the lugs facing the housings of the shoe. Furthermore, this stop is capable of occupying a retracted position, in which it does not disrupt the normal pivoting of the shoe. This stop is also directly linked to the clamping jaws, so that a relative movement between the latter causes the movable stop to tilt between its active position and its retracted position.
  • front stops are relatively fragile, particularly in that they are subject to premature breakage. Furthermore, it is difficult for the manufacturer to precisely identify the origin of these breakages. In addition, these front stops prove difficult to size, if we wish to adapt them to different user morphologies.
  • the present invention aims to remedy at least certain disadvantages of the prior art mentioned above.
  • the invention also relates to a sliding machine according to appended claim 15.
  • the invention makes it possible to produce an optimal isostatic connection system between the control lever and the articulation members. This ensures a connection that is substantially free of any play in the system.
  • the supports of the control lever on the spherical surfaces, belonging to the articulation members make it possible to guarantee perfect positioning of the parts, with a movement close to the theoretical kinematics.
  • connection system according to the invention eliminates any hyper droop, which constitutes, as we have seen, a major drawback of the prior art.
  • the spherical shapes of the articulation members guarantee that substantially no torque will be transmitted to the guide rods. Furthermore, no significant parasitic force will apply this guide rod.
  • articulation members equipped with sphere portions, come into contact with cavities of the control lever. Since these cavities are identical and oblong in shape, typically along a raceway, perfectly symmetrical behavior of the system is guaranteed.
  • the expressions “forward”, “rear”, “in front”, “behind”, “forward” and “backward” refer to the direction of the ski in normal use.
  • the front stop I essentially comprises a base plate 10, clamping parts 2 and 3, a control lever 4, as well as articulation members 6 and 7.
  • the base plate 10 is intended to be fixed on a sliding machine, in particular a ski board.
  • this fixing is of the removable type.
  • different orifices 12 are dug in the plate, so as to allow the passage of removable fixing means, for example screws.
  • this plate 10 supports several yokes, namely yokes 14 and 15 intended for mounting the clamping parts 2 and 3, as well as a yoke 16 intended for mounting the lever 4.
  • the clamping parts 2 and 3 which are mutually symmetrical, have approximately an L shape. Each part thus comprises an inner wing 20,30, as well as an outer wing 21,31. Near their junction with the outer wing, each inner wing is hollowed out with an orifice 22.32 intended for the passage of a physical axis 23.33. Once each axis 23.33 is mounted on a respective yoke 14.15, each clamping part is free to pivot relative to the base plate around a geometric axis denoted A2, A3. These axes are called longitudinal, namely that they extend in the main direction of the sliding machine, once the front stop according to the invention is installed on the latter.
  • each outer wing 21.31 is equipped with a respective lug 24.34.
  • each lug is intended to cooperate, in a manner known per se, with a user's shoe.
  • each inner wing defines a sheath 25,35, in which a respective rod 26,36 is mounted.
  • the mutual fixing between each sheath and each rod which is advantageously of the permanent type, is for example carried out by press-tight or crimped assembly.
  • compression springs 27,37 are arranged around a respective rod 26 and 36. The first end 28,38 of each of these springs bears, in use, against the walls of the sheath 25,35.
  • the lever 4 which has an elongated shape, has a longitudinal axis denoted X4, which is parallel to the longitudinal axis of the ski once the front stop is mounted on the latter. In its middle part this lever 4 is hollowed out with a transverse orifice 40, allowing the reception of a physical axis 41 capable of cooperating with the yoke 16. Once the lever is mounted on this yoke, it is free to pivot by relative to the base plate around a transverse geometric axis, denoted A4.
  • Cavities 50 and 55 are provided on the opposite side walls 48 and 49, belonging to the lever 4. These cavities, which form an essential element of the invention, will be described in more detail in the following. Furthermore, the front end 42 of the lever is hollowed out with a transverse orifice 44, allowing the passage of a physical axis 45. The latter ensures the articulation of a locking tab 46, relative to the lever 4, around 'an A46 transverse axis.
  • the articulation members 6 and 7, which are identical, firstly comprise a barrel 60,70, intended for the introduction of a respective rod 26,36. It will be noted that there is a possibility of mutual sliding of this rod relative to this barrel, along their main axis.
  • This barrel is extended by a peripheral collar 62.72, allowing the support of the second end 29.39 of each compression spring 27.37.
  • Each articulation member further comprises a articulation head 64,74, extending the collar opposite the barrel.
  • Each head is formed by a portion of a sphere, as shown in particular by Figure 10 .
  • C64 the center of this sphere, as well as D64 its diameter. Typically, this diameter is between 2 mm and 15 mm.
  • a64 the angle along which this portion of the sphere extends. In the example illustrated, this angle is greater than 180°, typically close to 270°. We can nevertheless predict that this angle is much lower than this value. In any case, in order to ensure correct operation of the system, this angle is advantageously greater than 10°, in particular greater than 20°.
  • 64' and 74' the so-called articulation surfaces, belonging to the respective heads 64 and 74.
  • the cavities 50 and 55 which are symmetrical with respect to a longitudinal plane, are of oblong shape.
  • the cavity 50 which is illustrated in particular on the figures 9 And 10 , firstly comprises a central portion 51, forming a rolling track for the head 64.
  • this track 51 has a cylindrical profile whose diameter D51 is close to that D64 of the head 64.
  • the angle a51 along which this cylindrical track 51 extends is slightly less than 180° so as to allow a convenient cooperation with head 64.
  • This track 51 is terminated by end portions 52 and 53, which are particularly visible on the Figure 11 .
  • these end portions are substantially in the shape of a half-sphere with a diameter close to that D64 above.
  • it can be expected that these end portions have different profiles.
  • track 51 it is possible for track 51 to follow a curved guideline.
  • the front stop I The implementation of the front stop I, described above, will now be explained in what follows. It is assumed that the base plate 10, belonging to this stop, is fixed on the board 80 of a ski 8. Furthermore the figures 2 and 3 show a shoe 9, likely to be adapted to this ski. To this end, in a manner known per se, the front end 90 of this shoe is provided with lateral housings 91,92 which, as will be seen in the following, can cooperate with the tightening lugs 24 and 34.
  • This stop firstly has an open configuration, illustrated on the figures 2 and 3 .
  • the rear end 43 of the lever 4 is in a raised position, while its front end 42 is in a lowered position in the vicinity of the plate 10.
  • the clamping parts 2 and 3 are mutually discarded. Under these conditions the clamping lugs 24 and 34 are distant from each other, at a spacing which does not allow them to cooperate with the aforementioned housings 91,92 .
  • the front stop is then in its closed configuration, illustrated on the figures 4 to 8 .
  • the shoe is integral in translation with the front stop, while being free to pivot relative to this stop around the geometric axis A9. It will be noted that, in the absence of locking of the tab 46, the shoe can become detached from the front stop, particularly in the event of significant effort. This possibility is particularly suitable for using skis in downhill mode.
  • this front stop can be locked in this open configuration.
  • the user tilts the locking tab 46 upwards, according to the arrow F46 shown on the Figure 5 .
  • the shoe cannot separate from the front toe, even in the event of significant effort. This possibility is particularly suited to the use of skiing, in hiking mode.
  • THE figures 12 to 14 illustrate the relative position of the articulation head 64 and the oblong cavity 50, during the angular travel of the lever 4. In essence, as the rear end 43 of the lever 4 pivots downwards, the head 64 slides along the cavity 50. A person skilled in the art will determine the length 6 and 7.
  • the front stop of figures 15 and 16 which conforms to a first alternative embodiment of the invention, comprises an insert 105 in which opposite cavities 150 and 155 are provided. These cavities have the same profile as that of the cavities 50 and 55, namely that they have an oblong shape.
  • This insert 105 is fixed in an opening 159, which opens onto the opposite side faces of the control lever 104.
  • the fixing of this insert, on the walls of the opening 159, is carried out by any appropriate means.
  • This embodiment has specific advantages. In fact, it guarantees great ease of manufacturing of the control lever. Furthermore, the latter has high mechanical stiffness, given that it has a closed shape at its rear end.
  • auxiliary member 205 in the form of a diabolo.
  • This auxiliary member comprises two cups, delimiting a median groove 258.
  • These cups form cavities 250 and 255 which, unlike the above embodiments, are not oblong.
  • these cavities have a spherical shape, with a diameter close to that of the head 264, 274 of a respective articulation member 206, 207. Consequently, each articulation member has a ball joint type connection with respect to -screw the cavities, namely that it has three degrees of freedom in rotation relative to these cavities, while being linked in translation relative to the latter.
  • the auxiliary member 205 When the control lever pivots, the auxiliary member 205 is free to slide along the main axis of the control lever 204, according to arrow F205.
  • the rear end 243 of the lever 204 is open, presenting a C shape.
  • the walls of this open end are provided with a central groove 249, along which the groove 258 can move. of the auxiliary member 205.
  • This embodiment has specific advantages. In fact, it guarantees very low friction on high force transmissions.
  • FIG. 19 The front stop of figures 19 and 20 , which conforms to a third alternative embodiment of the invention, differs from the variant of figures 17 and 18 in that the articulation heads 364, 374 come directly into contact with flat surfaces of the control lever. More precisely, the rear end 343 of this lever 304 delimits a chamber 344, which is bordered by said flat surfaces 345 and 346, forming respectively upper and lower surfaces of this chamber. In the example illustrated, this chamber 344 is open towards the rear, it being understood that it can be closed by a wall not shown. It should also be noted that, from the perspective of Figure 19 , part of the upper wall of the chamber has been torn off, for better visibility.
  • the heads 364,374 of the articulation members are capable of sliding along the flat surfaces 345,346, mentioned above, along the main axis of the lever 304. Furthermore, as in the embodiment of the figures 17 and 18 , these heads 364,374 in the shape of a portion of a sphere cooperate with cavities 250,255 provided in the auxiliary member 305. On the other hand, unlike the figures 17 and 18 , this auxiliary member 305 is not guided by the walls of the lever. Thus the vertical forces are transmitted directly from the articulation members to the lever control, while the horizontal forces are transmitted from one spherical head to the other, via the auxiliary member.
  • This mode of realization of these figures 19 and 20 has specific advantages. In particular it uses mechanical parts, the structure of which is simple.
  • each head 464,474 in the form of a portion of a sphere is equipped with a projection 465,475, which cooperates with a recess 466,476 made in the facing head.
  • the cooperation of these projections and these recesses ensures a possibility of pivoting between these heads, around an axis denoted A 406. This pivot axis is distant from the respective centers C464 and C474 of the heads 464,474.
  • the spherical heads bear indirectly against the flat surfaces of the chamber 444, with the possibility of sliding along the main axis of the lever.
  • This embodiment has specific advantages. In fact, it allows a reduction in the number of mechanical elements, while allowing direct transmission of forces from the spherical joint heads to the control lever.
  • each head 564,574 has substantially the shape of a half-sphere.
  • these two half-spheres are mutually connected by a physical axis 565, which guarantees a possibility of mutual rotation between these two half-spheres, around an axis denoted A506.
  • this axis of rotation passes through the respective centers C564 and C574 of the two half-spheres 564 and 574, which coincide.
  • This embodiment has specific advantages, which are notably linked to its structural simplicity.
  • the front stop of figures 27 and 28 which conforms to a sixth variant embodiment of the invention, differs from the previous variants in particular with regard to the structure of the lever 604.
  • the levers 4 to 504 are mounted on their yoke thanks to circular holes.
  • the mounting of the lever 604 is ensured thanks to an oblong orifice 649.
  • the front stop of figures 29 and 30 which conforms to a seventh alternative embodiment of the invention, differs from the first embodiment with regard to the structure of the articulation member.
  • the articulation surface of each articulation member 706 and 707 is formed, not by a projecting head, but by a cavity 764 and 774.
  • the control lever 704 is equipped with a rod 749 on which slides a complementary articulation member 741.
  • the latter has a spherical head 747, capable of cooperating with each of the above cavities 764 and 774.
  • This embodiment of the figures 29 and 30 therefore constitute a mirror type solution, with respect to the mode of realization of the figures 1 to 13 . It has specific advantages, in particular in that it gives great simplicity of manufacturing to the different parts.
  • each articulation member cooperates with a single spring and a single rod.
  • each articulation member cooperates with two or even three springs, as well as two or three rods.
  • the use of a single spring and a single rod constitutes a preferred embodiment. Indeed, such use is more particularly advantageous to avoid any untimely hyper droop.

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Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention a trait au domaine technique des fixations d'engins de glisse. À titre d'exemples non limitatifs, les engins de glisse visés par l'invention sont notamment destinés à la pratique du ski ou surf de randonnée, du télémark ainsi que du ski nordique et du ski de fond. L'invention concerne plus particulièrement une butée avant appartenant à la fixation d'un engin de glisse, ainsi qu'un engin de glisse équipé d'une telle butée avant.The present invention relates to the technical field of sliding equipment bindings. By way of non-limiting examples, the sliding machines covered by the invention are intended in particular for the practice of touring skiing or surfing, telemarking as well as Nordic skiing and cross-country skiing. The invention relates more particularly to a front stop belonging to the attachment of a sliding machine, as well as a sliding machine equipped with such a front stop.

Etat de la techniqueState of the art

La butée avant équipant les engins de glisse, visés par l'invention, assure une liaison de l'extrémité avant de la chaussure de l'utilisateur avec le ski. Cette butée, dans un mode dit de randonnée, permet à la chaussure de l'utilisateur de pivoter autour d'un axe transversal, situé à l'avant du pied. Cette rotation autorise un décollement du talon par rapport à l'engin, en particulier la planche de ski. Cela permet par conséquent à l'utilisateur d'exercer un effort optimal de poussée, notamment lors d'une phase de montée.The front stop fitted to the sliding machines, covered by the invention, ensures a connection of the front end of the user's shoe with the ski. This stop, in a so-called hiking mode, allows the user's shoe to pivot around a transverse axis, located at the front of the foot. This rotation allows the heel to separate from the machine, in particular the ski board. This therefore allows the user to exert an optimal pushing effort, particularly during an ascent phase.

La demande de brevet européen EP 0 199 098 a proposé une fixation pour ski de randonnée, incluant une butée avant comprenant deux mâchoires de serrage. Chacune de ces dernières, qui présentent globalement une forme de L, est articulée autour d'un axe longitudinal du ski. A leur extrémité supérieure ces mâchoires sont équipées d'ergots de serrage, qui pénètrent dans des orifices ménagés dans la chaussure de ski.The European patent application EP 0 199 098 proposed a binding for touring skis, including a front stop comprising two clamping jaws. Each of the latter, which generally has an L shape, is articulated around a longitudinal axis of the ski. At their upper end these jaws are equipped with clamping lugs, which penetrate into holes in the ski boot.

Ces deux mâchoires sont associées à un mécanisme à ressort, ce qui leur permet d'occuper deux positions stables. Dans une première position, dite fermée ou encore dite de serrage, les ergots sont rapprochés mutuellement et coopèrent avec les orifices précités. Dans une seconde position, dite ouverte, les mâchoires sont mutuellement écartées. De la sorte, les ergots sont désolidarisés par rapport à la chaussure, laquelle peut alors être séparée du ski.These two jaws are associated with a spring mechanism, which allows them to occupy two stable positions. In a first position, called closed or also called clamping, the lugs are brought together mutually and cooperate with the aforementioned orifices. In a second position, called open, the jaws are mutually apart. In this way, the lugs are separated from the shoe, which can then be separated from the ski.

La solution proposée dans cette demande de brevet européen implique cependant certains inconvénients. Ainsi l'utilisateur peut rencontrer certaines difficultés à engager sa chaussure dans la fixation. En effet il est nécessaire de mettre en regard les orifices de la chaussure avec les ergots, ce qui peut se révéler malcommode en pratique.The solution proposed in this European patent application, however, involves certain disadvantages. Thus the user may encounter certain difficulties in engaging his shoe in the binding. In fact, it is necessary to place the holes in the shoe in line with the lugs, which can be inconvenient in practice.

Afin de remédier à cet inconvénient, certains fabricants ont prévu de réaliser une butée, qui est destinée à coopérer avec l'avant de la chaussure. Cette butée apporte un avantage, en ce qu'elle assure un positionnement relativement précis de la chaussure, selon la direction longitudinale. À cet égard, on citera les demandes de brevet européen EP 2 392 388 ainsi que EP 2 300 111 .In order to remedy this drawback, some manufacturers have planned to produce a stop, which is intended to cooperate with the front of the shoe. This stop provides an advantage in that it ensures relatively precise positioning of the shoe, in the longitudinal direction. In this regard, we will cite the European patent applications EP 2 392 388 as well as EP 2 300 111 .

On mentionnera également le brevet européen EP 2 722 081 , au nom de la société Salomon. Selon l'enseignement de ce brevet, la butée précitée est mobile entre deux positions, à savoir tout d'abord une position active dans laquelle elle entre en contact avec la chaussure, de manière à positionner les ergots en regard des logements de la chaussure. Par ailleurs cette butée est susceptible d'occuper une position escamotée, dans laquelle elle ne perturbe pas le pivotement normal de la chaussure. Cette butée est en outre directement liée aux mâchoires de serrage, de sorte qu'un déplacement relatif entre ces dernières entraîne le basculement de la butée mobile entre sa position active et sa position escamotée.We will also mention the European patent EP 2 722 081 , on behalf of the Salomon company. According to the teaching of this patent, the aforementioned stop is movable between two positions, namely firstly an active position in which it comes into contact with the shoe, so as to position the lugs facing the housings of the shoe. Furthermore, this stop is capable of occupying a retracted position, in which it does not disrupt the normal pivoting of the shoe. This stop is also directly linked to the clamping jaws, so that a relative movement between the latter causes the movable stop to tilt between its active position and its retracted position.

On citera également la demande de brevet européen EP 2 659 940 , au nom de la société ATK RACE. Ce document divulgue une butée avant dans laquelle les pièces de serrage ne coopèrent pas directement avec des ressorts. Au contraire, il est prévu un ressort qui est interposé entre le levier de commande et un élément de liaison, assurant la transmission avec les pièces de serrage. En service, ce ressort repousse l'élément de liaison contre les pièces de serrage. Ce document précise en outre que les surfaces actives de l'élément de liaison sont de forme tronconique et qu'elles coopèrent avec des surfaces en regard appartenant aux pièces de serrage, également en forme de tronc de cône.We will also cite the European patent application EP 2 659 940 , on behalf of the company ATK RACE. This document discloses a front stop in which the clamping parts do not cooperate directly with springs. On the contrary, a spring is provided which is interposed between the control lever and a connecting element, ensuring transmission with the clamping parts. In use, this spring pushes the connecting element against the clamping parts. This document further specifies that the active surfaces of the connecting element are of frustoconical shape and that they cooperate with facing surfaces belonging to the clamping parts, also in the shape of a truncated cone.

On mentionnera enfin la demande de brevet américain US 2013/328 289 , qui divulgue une butée avant, dans laquelle deux mâchoires latérales sont mobiles en rotation autour d'axes longitudinaux. Selon ce document il est prévu un système de déclenchement automatique en torsion associé au basculement des mâchoires, la butée pouvant adopter différentes configurations. De façon plus précise il est prévu tout d'abord une configuration de fermeture, dans laquelle des ergots portés par les mâchoires coopèrent avec la chaussure. Par ailleurs, dans une configuration de déclenchement en torsion, la chaussure se trouve libérée automatiquement, par actionnement du système de déclenchement précité.Finally, we will mention the American patent application US 2013/328 289 , which discloses a front stop, in which two lateral jaws are movable in rotation around longitudinal axes. According to this document, an automatic torsion triggering system associated with the tilting of the jaws is provided, the stop being able to adopt different configurations. More precisely, a closing configuration is firstly provided, in which lugs carried by the jaws cooperate with the shoe. Furthermore, in a torsion trigger configuration, the shoe is released automatically, by actuation of the aforementioned triggering system.

Malgré les efforts entrepris par les différents fabricants, en vue d'améliorer les butées avant du type décrit ci-dessus, ces dernières ne se révèlent pas totalement satisfaisantes.Despite the efforts undertaken by the various manufacturers to improve the front stops of the type described above, the latter do not prove to be completely satisfactory.

En effet il a été constaté que ces butées avant sont relativement fragiles, notamment en ce qu'elles sont sujettes à des casses prématurées. Par ailleurs il est difficile, pour le fabricant, d'identifier de façon précise l'origine de ces casses. En outre ces butées avant se révèlent difficiles à dimensionner, si on souhaite les adapter à différentes morphologies d'utilisateurs.In fact, it has been noted that these front stops are relatively fragile, particularly in that they are subject to premature breakage. Furthermore, it is difficult for the manufacturer to precisely identify the origin of these breakages. In addition, these front stops prove difficult to size, if we wish to adapt them to different user morphologies.

Compte tenu de ce qui précède, la présente invention vise à remédier à au moins certains inconvénients de l'art antérieur évoqués ci-dessus.Taking into account the above, the present invention aims to remedy at least certain disadvantages of the prior art mentioned above.

Objets de l'inventionObjects of the invention

Selon l'invention, au moins un des objectifs ci-dessus est réalisé par une butée avant pour engin de glisse, selon la revendication 1 annexée.According to the invention, at least one of the above objectives is achieved by a front stop for a sliding machine, according to appended claim 1.

Des caractéristiques avantageuses de la butée avant conforme à l'invention font l'objet des revendications 2 à 14 annexées.Advantageous characteristics of the front stop according to the invention are the subject of appended claims 2 to 14.

L'invention a également pour objet un engin de glisse selon la revendication 15 annexée.The invention also relates to a sliding machine according to appended claim 15.

Il est du mérite du Demandeur d'avoir identifié que les inconvénients de l'art antérieur, décrit ci-dessus, sont imputables en particulier à la nature de la transmission entre le levier de commande et les organes de liaison. En particulier le demandeur a mis en lumière que, dans cet art antérieur, cette transmission conduit à un hyper statisme du système.It is to the Applicant's credit to have identified that the disadvantages of the prior art, described above, are attributable in particular to the nature of the transmission between the control lever and the connecting members. In particular, the applicant has highlighted that, in this prior art, this transmission leads to hyper stasis of the system.

Au contraire, l'invention permet de réaliser un système de liaison isostatique optimal entre le levier de commande et les organes d'articulation. Cela assure une liaison sensiblement dépourvue de tout jeu, dans le système. En effet les appuis du levier de commande sur les surfaces sphériques, appartenant aux organes d'articulation, permettent de garantir un parfait positionnement des pièces, avec un déplacement proche de la cinématique théorique.On the contrary, the invention makes it possible to produce an optimal isostatic connection system between the control lever and the articulation members. This ensures a connection that is substantially free of any play in the system. In fact, the supports of the control lever on the spherical surfaces, belonging to the articulation members, make it possible to guarantee perfect positioning of the parts, with a movement close to the theoretical kinematics.

En outre le système de liaison conforme à l'invention supprime tout hyper statisme, lequel constitue comme on l'a vu un inconvénient majeur de l'art antérieur. En effet, les formes sphériques des organes d'articulation garantissent que sensiblement aucun couple ne sera transmis sur les tiges de guidage. Par ailleurs, aucun effort parasite significatif ne sollicitera cette tige de guidage.Furthermore, the connection system according to the invention eliminates any hyper droop, which constitutes, as we have seen, a major drawback of the prior art. Indeed, the spherical shapes of the articulation members guarantee that substantially no torque will be transmitted to the guide rods. Furthermore, no significant parasitic force will apply this guide rod.

Conformément à un mode avantageux de l'invention des organes d'articulation, équipés de portions de sphère, viennent en contact avec des cavités du levier de commande. Étant donné que ces cavités sont identiques et de forme oblongue, typiquement selon une piste de roulement, un comportement parfaitement symétrique du système est garanti.In accordance with an advantageous embodiment of the invention, articulation members, equipped with sphere portions, come into contact with cavities of the control lever. Since these cavities are identical and oblong in shape, typically along a raceway, perfectly symmetrical behavior of the system is guaranteed.

On soulignera que le document EP 2 659 940 , présenté ci-dessus, appartient un simple arrière-plan technologique de l'invention. En effet, comme on l'a expliqué, le positionnement du ressort est sensiblement différent de celui de l'invention. Par ailleurs, ce document enseigne que les surfaces complémentaires, appartenant respectivement à l'élément de liaison et aux pièces de serrage, présentent une forme de tronc de cône. Une telle forme est donc significativement différente de la forme en portion de sphère, prévue conformément à l'invention.It should be noted that the document EP 2 659 940 , presented above, belongs to a simple technological background of the invention. Indeed, as explained, the positioning of the spring is significantly different from that of the invention. Furthermore, this document teaches that the complementary surfaces, belonging respectively to the connecting element and to the clamping parts, have a truncated cone shape. Such a shape is therefore significantly different from the shape in the portion of a sphere, provided in accordance with the invention.

Description des figuresDescription of figures

D'autres avantages de l'invention apparaîtront à la lecture de la description de différents modes de réalisation de l'invention, donnée ci-dessous à titre purement indicatif et non limitatif, en référence aux dessins annexés dans lesquels :

  • [Fig. 1] est une vue en perspective, illustrant les différents éléments constitutifs d'une butée avant conforme à l'invention.
  • [Fig. 2] est une vue en perspective, illustrant la butée avant conforme à l'invention dans sa configuration ouverte.
  • [Fig. 3] est une vue de côté, illustrant la butée avant conforme à l'invention dans sa configuration ouverte.
  • [Fig. 4] est une vue en perspective, analogue à la figure 2, illustrant la butée avant conforme à l'invention dans sa configuration fermée.
  • [Fig. 5] est une vue de côté, analogue à la figure 3, illustrant la butée avant conforme à l'invention dans sa configuration fermée.
  • [Fig. 6] est une vue en perspective, illustrant sous un autre angle la butée avant dans sa configuration fermée.
  • [Fig. 7] est une vue en coupe transversale, illustrant la configuration fermée de cette butée avant.
  • [Fig. 8] est une vue de dessus, illustrant la configuration fermée de cette butée avant.
  • [Fig. 9] est une vue en perspective, illustrant à plus grande échelle la coopération entre un organe d'articulation et un levier de commande, appartenant à la butée avant conforme à l'invention.
  • [Fig. 10] est une vue en coupe transversale, illustrant à grande échelle le profil de cet organe d'articulation, ainsi que d'une cavité de réception de cet organe d'articulation, laquelle est ménagée dans le levier de commande.
  • [Fig. 11] est une vue de côté, illustrant à grande échelle la tête de l'organe d'articulation, reçue dans la cavité du levier de commande.
  • [Fig. 12] est une vue en coupe longitudinale, illustrant les positions relatives du levier de commande et de l'organe d'articulation, lors d'une première phase du pivotement de ce levier de commande.
  • [Fig. 13] est une vue en coupe longitudinale, illustrant les positions relatives du levier de commande et de l'organe d'articulation, lors d'une deuxième phase du pivotement de ce levier de commande.
  • [Fig. 14] est une vue en coupe longitudinale, illustrant les positions relatives du levier de commande et de l'organe d'articulation, lors d'une troisième phase du pivotement de ce levier de commande.
  • [Fig. 15] est une vue en perspective, illustrant une première variante de réalisation de l'invention, de façon assemblée.
  • [Fig. 16] est une vue en perspective, illustrant la première variante de réalisation de l'invention, de façon éclatée.
  • [Fig. 17] est une vue en perspective, illustrant une deuxième variante de réalisation de l'invention, de façon assemblée.
  • [Fig. 18] est une vue en perspective, illustrant la deuxième variante de réalisation de l'invention, de façon assemblée.
  • [Fig. 19] est une vue en perspective, illustrant une troisième variante de réalisation de l'invention.
  • [Fig. 20] est une vue en coupe transversale, illustrant la variante de réalisation de la figure 19.
  • [Fig. 21] est une vue en perspective, illustrant une quatrième variante de réalisation de l'invention.
  • [Fig. 22] est une vue en en perspective, selon un premier angle, illustrant la coopération entre les organes d'articulation appartenant à la variante de réalisation de la figure 21.
  • [Fig. 23] est une vue en en perspective, selon un deuxième angle, illustrant la coopération entre les organes d'articulation appartenant à la variante de réalisation de la figure 21.
  • [Fig. 24] est une vue en en perspective, selon un troisième angle, illustrant la coopération entre les organes d'articulation appartenant à la variante de réalisation de la figure 21.
  • [Fig. 25] est une vue en perspective illustrant des organes d'articulation d'une cinquième variante de réalisation de l'invention, de façon assemblée.
  • [Fig. 26] est une vue en perspective illustrant des organes d'articulation de la cinquième variante de réalisation de l'invention, de façon éclatée.
  • [Fig. 27] est une vue de côté, illustrant un levier de commande appartenant à une sixième variante de réalisation de l'invention.
  • [Fig. 28] est une vue en perspective, illustrant un levier de commande appartenant à la sixième variante de réalisation de l'invention.
  • [Fig. 29] est une vue en perspective, illustrant une septième variante de réalisation de l'invention, de façon assemblée.
  • [Fig. 30] est une vue en perspective, illustrant la septième variante de réalisation de l'invention, de façon éclatée.
Other advantages of the invention will appear on reading the description of different embodiments of the invention, given below for purely indicative and non-limiting purposes, with reference to the appended drawings in which:
  • [ Fig. 1 ] is a perspective view, illustrating the different constituent elements of a front stop according to the invention.
  • [ Fig. 2 ] is a perspective view, illustrating the front stop according to the invention in its open configuration.
  • [ Fig. 3 ] is a side view, illustrating the front stop according to the invention in its open configuration.
  • [ Fig. 4 ] is a perspective view, analogous to the figure 2 , illustrating the front stop according to the invention in its closed configuration.
  • [ Fig. 5 ] is a side view, analogous to the Figure 3 , illustrating the front stop according to the invention in its closed configuration.
  • [ Fig. 6 ] is a perspective view, illustrating from another angle the front stop in its closed configuration.
  • [ Fig. 7 ] is a cross-sectional view, illustrating the closed configuration of this front stop.
  • [ Fig. 8 ] is a top view, illustrating the closed configuration of this front stop.
  • [ Fig. 9 ] is a perspective view, illustrating on a larger scale the cooperation between a hinge member and a control lever, belonging to the front stop according to the invention.
  • [ Fig. 10 ] is a cross-sectional view, illustrating on a large scale the profile of this articulation member, as well as a cavity for receiving this articulation member, which is provided in the control lever.
  • [ Fig. 11 ] is a side view, illustrating on a large scale the head of the articulation member, received in the cavity of the control lever.
  • [ Fig. 12 ] is a longitudinal sectional view, illustrating the relative positions of the control lever and the articulation member, during a first phase of the pivoting of this control lever.
  • [ Fig. 13 ] is a longitudinal sectional view, illustrating the relative positions of the control lever and the articulation member, during a second phase of the pivoting of this control lever.
  • [ Fig. 14 ] is a longitudinal sectional view, illustrating the relative positions of the control lever and the articulation member, during a third phase of the pivoting of this control lever.
  • [ Fig. 15 ] is a perspective view, illustrating a first alternative embodiment of the invention, in an assembled manner.
  • [ Fig. 16 ] is a perspective view, illustrating the first alternative embodiment of the invention, in exploded form.
  • [ Fig. 17 ] is a perspective view, illustrating a second alternative embodiment of the invention, in an assembled manner.
  • [ Fig. 18 ] is a perspective view, illustrating the second alternative embodiment of the invention, in an assembled manner.
  • [ Fig. 19 ] is a perspective view, illustrating a third alternative embodiment of the invention.
  • [ Fig. 20 ] is a cross-sectional view, illustrating the alternative embodiment of the Figure 19 .
  • [ Fig. 21 ] is a perspective view, illustrating a fourth alternative embodiment of the invention.
  • [ Fig. 22 ] is a perspective view, from a first angle, illustrating the cooperation between the articulation members belonging to the alternative embodiment of the Figure 21 .
  • [ Fig. 23 ] is a perspective view, from a second angle, illustrating the cooperation between the articulation members belonging to the alternative embodiment of the Figure 21 .
  • [ Fig. 24 ] is a perspective view, from a third angle, illustrating the cooperation between the articulation members belonging to the alternative embodiment of the Figure 21 .
  • [ Fig. 25 ] is a perspective view illustrating the hinge members of a fifth alternative embodiment of the invention, in an assembled manner.
  • [ Fig. 26 ] is a perspective view illustrating articulation members of the fifth alternative embodiment of the invention, in exploded form.
  • [ Fig. 27 ] is a side view, illustrating a control lever belonging to a sixth alternative embodiment of the invention.
  • [ Fig. 28 ] is a perspective view, illustrating a control lever belonging to the sixth alternative embodiment of the invention.
  • [ Fig. 29 ] is a perspective view, illustrating a seventh alternative embodiment of the invention, in an assembled manner.
  • [ Fig. 30 ] is a perspective view, illustrating the seventh alternative embodiment of the invention, in exploded form.

Les repères numériques suivants sont utilisés sur les figures et dans la description :

  • 2,3 Pièce de serrage
  • 4,104,204,304,604,704 Levier de commande
  • 6,7,206,207,706,707 Organes d'articulation
  • 8,80 Ski (8), planche du ski (80)
  • 9,90 Chaussure (9), Extrémité avant de la chaussure (90)
  • 10 Plaque de base
  • 12,22,32 Orifice
  • 14,15,16 Chape
  • 20,30,21,31 Aile intérieure (20,30) et extérieure (21,31)
  • 23,33 Axe
  • 24,34 Ergot
  • 25,35 Fourreau
  • 26,36 Tige
  • 27,37 Ressort de compression
  • 28,29,38 Première (28,38) et deuxième (29) extrémité du ressort de compression
  • 40 Orifice transversal
  • 41 Axe
  • 42,43,243,343 Extrémités avant (42) et arrière (43) de 4
  • 44 Orifice transversal
  • 45 Axe
  • 46 Patte de verrouillage
  • 50,55,250,255,650 Cavités
  • 51 Portion centrale (piste de roulement)
  • 52,53 Extrémités de 51
  • 60,70 Fût
  • 62,72 Collerette périphérique
  • 64,74 Tête d'articulation
  • 91,92 Logements latéraux pour ergots 24,34
  • 105,205,305 Insert, organe auxiliaire
  • 159 Ouverture
  • 249 Rainure médiane
  • 258 Gorge médiane de 205
  • 264,274,364,374,464,474,564,574 Tête
  • 344 Chambre
  • 345 ,346 Surfaces planes
  • 465,475 Saillie
  • 466,476 Evidement
  • 565 Axe
  • 649 Orifice oblong
  • 749 Tige
  • 741 Organe d'articulation complémentaire
  • 747 Tête sphérique
  • 764,774 Cavité
The following numerical markers are used in the figures and in the description:
  • 2.3 Clamping piece
  • 4,104,204,304,604,704 Control lever
  • 6,7,206,207,706,707 Articulation organs
  • 8.80 Ski (8), ski board (80)
  • 9.90 Shoe (9), Front end of shoe (90)
  • 10 Base plate
  • 12,22,32 Orifice
  • 14,15,16 Screed
  • 20,30,21,31 Inner wing (20,30) and outer wing (21,31)
  • 23.33 Axis
  • 24.34 Ergot
  • 25.35 Scabbard
  • 26.36 Stem
  • 27.37 Compression spring
  • 28,29,38 First (28,38) and second (29) end of compression spring
  • 40 Cross port
  • 41 Axis
  • 42,43,243,343 Front (42) and rear (43) ends of 4
  • 44 Cross port
  • 45 Axis
  • 46 Locking tab
  • 50,55,250,255,650 Cavities
  • 51 Central portion (running track)
  • 52.53 Ends of 51
  • 60.70 Drum
  • 62.72 Peripheral flange
  • 64.74 Joint head
  • 91.92 Lateral housings for lugs 24.34
  • 105,205,305 Insert, auxiliary organ
  • 159 Opening
  • 249 Middle groove
  • 258 Middle groove of 205
  • 264,274,364,374,464,474,564,574 Head
  • 344 Room
  • 345,346 Flat surfaces
  • 465.475 Projection
  • 466,476 Recess
  • 565 Axis
  • 649 Oblong hole
  • 749 Stem
  • 741 Complementary articulation organ
  • 747 Spherical head
  • 764,774 Cavity

Description détailléedetailed description

Dans cette description, les expressions « avant », « arrière », « devant », « derrière », « avance » et « recul » se réfèrent à la direction du ski en situation normale d'utilisation. Comme cela est illustré sur les figures 1 à 14, la butée avant I conforme à un premier mode de réalisation de l'invention comporte essentiellement une plaque de base 10, des pièces de serrage 2 et 3, un levier de commande 4, ainsi que des organes d'articulation 6 et 7. In this description, the expressions “forward”, “rear”, “in front”, “behind”, “forward” and “backward” refer to the direction of the ski in normal use. As illustrated in the figures 1 to 14 , the front stop I according to a first embodiment of the invention essentially comprises a base plate 10, clamping parts 2 and 3, a control lever 4, as well as articulation members 6 and 7.

La plaque de base 10 est destinée à être fixée sur un engin de glisse, notamment une planche de ski. De manière avantageuse, cette fixation est de type amovible. Dans l'exemple illustré, différents orifices 12 sont creusés dans la plaque, de manière à permettre le passage de moyens de fixation amovible, par exemple des vis. Enfin cette plaque 10 supporte plusieurs chapes, à savoir des chapes 14 et 15 destinées au montage des pièces de serrage 2 et 3, ainsi qu'une chape 16 destinée au montage du levier 4. The base plate 10 is intended to be fixed on a sliding machine, in particular a ski board. Advantageously, this fixing is of the removable type. In the example illustrated, different orifices 12 are dug in the plate, so as to allow the passage of removable fixing means, for example screws. Finally, this plate 10 supports several yokes, namely yokes 14 and 15 intended for mounting the clamping parts 2 and 3, as well as a yoke 16 intended for mounting the lever 4.

Les pièces de serrage 2 et 3, qui sont mutuellement symétriques, présentent sensiblement une forme de L. Chaque pièce comporte ainsi une aile intérieure 20,30, ainsi qu'une aile extérieure 21,31. Au voisinage de leur jonction avec l'aile extérieure, chaque aile intérieure est creusée d'un orifice 22,32 destiné au passage d'un axe physique 23,33. Une fois que chaque axe 23,33 est monté sur une chape respective 14,15, chaque pièce de serrage est libre de pivoter par rapport à la plaque de base autour d'un axe géométrique noté A2, A3. Ces axes sont dénommés longitudinaux, à savoir qu'ils s'étendent selon la direction principale de l'engin de glisse, une fois que la butée avant selon l'invention est installée sur ce dernier.The clamping parts 2 and 3, which are mutually symmetrical, have approximately an L shape. Each part thus comprises an inner wing 20,30, as well as an outer wing 21,31. Near their junction with the outer wing, each inner wing is hollowed out with an orifice 22.32 intended for the passage of a physical axis 23.33. Once each axis 23.33 is mounted on a respective yoke 14.15, each clamping part is free to pivot relative to the base plate around a geometric axis denoted A2, A3. These axes are called longitudinal, namely that they extend in the main direction of the sliding machine, once the front stop according to the invention is installed on the latter.

Par ailleurs, au voisinage de son extrémité libre opposée à l'aile intérieure, chaque aile extérieure 21,31 est équipée d'un ergot respectif 24,34. Comme on le verra dans ce qui suit, chaque ergot est destiné à coopérer, de façon connue en soi, avec la chaussure d'un utilisateur.Furthermore, in the vicinity of its free end opposite the inner wing, each outer wing 21.31 is equipped with a respective lug 24.34. As will be seen in the following, each lug is intended to cooperate, in a manner known per se, with a user's shoe.

Au voisinage de son extrémité libre opposée à l'aile extérieure, chaque aile intérieure délimite un fourreau 25,35, dans lequel est montée une tige respective 26,36. La fixation mutuelle entre chaque fourreau et chaque tige, qui est avantageusement de type permanent, est par exemple réalisé par montage serré à la presse ou bien serti. Enfin des ressorts de compression 27,37 sont disposés autour d'une tige respective 26 et 36. La première extrémité 28,38 de chacun de ces ressorts prend appui, en service, contre les parois du fourreau 25,35. In the vicinity of its free end opposite the outer wing, each inner wing defines a sheath 25,35, in which a respective rod 26,36 is mounted. The mutual fixing between each sheath and each rod, which is advantageously of the permanent type, is for example carried out by press-tight or crimped assembly. Finally, compression springs 27,37 are arranged around a respective rod 26 and 36. The first end 28,38 of each of these springs bears, in use, against the walls of the sheath 25,35.

Le levier 4, qui présente une forme allongée, possède un axe longitudinal noté X4, lequel est parallèle à l'axe longitudinal du ski une fois que la butée avant est montée sur ce dernier. Dans sa partie médiane ce levier 4 est creusé d'un orifice transversal 40, permettant la réception d'un axe physique 41 susceptible de coopérer avec la chape 16. Une fois que le levier est monté sur cette chape, il est libre de pivoter par rapport à la plaque de base autour d'un axe géométrique transversal, noté A4. The lever 4, which has an elongated shape, has a longitudinal axis denoted X4, which is parallel to the longitudinal axis of the ski once the front stop is mounted on the latter. In its middle part this lever 4 is hollowed out with a transverse orifice 40, allowing the reception of a physical axis 41 capable of cooperating with the yoke 16. Once the lever is mounted on this yoke, it is free to pivot by relative to the base plate around a transverse geometric axis, denoted A4.

Des cavités 50 et 55 sont ménagées sur les flancs latéraux opposés 48 et 49, appartenant au levier 4. Ces cavités, qui forment un élément essentiel de l'invention, seront décrites plus en détail dans ce qui suit. Par ailleurs l'extrémité avant 42 du levier est creusée d'un orifice transversal 44, permettant le passage d'un axe physique 45. Ce dernier assure l'articulation d'une patte de verrouillage 46, par rapport au levier 4, autour d'un axe transversal A46. Cavities 50 and 55 are provided on the opposite side walls 48 and 49, belonging to the lever 4. These cavities, which form an essential element of the invention, will be described in more detail in the following. Furthermore, the front end 42 of the lever is hollowed out with a transverse orifice 44, allowing the passage of a physical axis 45. The latter ensures the articulation of a locking tab 46, relative to the lever 4, around 'an A46 transverse axis.

Les organes d'articulation 6 et 7, qui sont identiques, comprennent tout d'abord un fût 60,70, destiné à l'introduction d'une tige respective 26,36. On notera qu'il existe une possibilité de coulissement mutuel de cette tige par rapport à ce fût, selon leur axe principal. Ce fût est prolongé par une collerette périphérique 62,72, permettant l'appui de la seconde extrémité 29,39 de chaque ressort de compression 27,37. The articulation members 6 and 7, which are identical, firstly comprise a barrel 60,70, intended for the introduction of a respective rod 26,36. It will be noted that there is a possibility of mutual sliding of this rod relative to this barrel, along their main axis. This barrel is extended by a peripheral collar 62.72, allowing the support of the second end 29.39 of each compression spring 27.37.

Chaque organe d'articulation comprend en outre une tête d'articulation 64,74, prolongeant la collerette à l'opposé du fût. Chaque tête est formée par une portion de sphère, comme le montre en particulier la figure 10. Sur cette dernière on note C64 le centre de cette sphère, ainsi que D64 son diamètre. De manière typique, ce diamètre est compris entre 2 mm et 15 mm. Par ailleurs on note a64 l'angle selon lequel s'étend cette portion de sphère. Dans l'exemple illustré, cet angle est supérieur à 180°, typiquement voisin de 270°. On peut néanmoins prévoir que cet angle est bien inférieur à cette valeur. En tout état de cause, de manière à assurer un fonctionnement correct du système, cet angle est avantageusement supérieur à 10°, en particulier supérieur à 20°. On note 64' et 74' les surfaces dites d'articulation, appartenant aux têtes respectives 64 et 74. Each articulation member further comprises a articulation head 64,74, extending the collar opposite the barrel. Each head is formed by a portion of a sphere, as shown in particular by Figure 10 . On the latter we note C64 the center of this sphere, as well as D64 its diameter. Typically, this diameter is between 2 mm and 15 mm. Furthermore, we note a64 the angle along which this portion of the sphere extends. In the example illustrated, this angle is greater than 180°, typically close to 270°. We can nevertheless predict that this angle is much lower than this value. In any case, in order to ensure correct operation of the system, this angle is advantageously greater than 10°, in particular greater than 20°. We note 64' and 74' the so-called articulation surfaces, belonging to the respective heads 64 and 74.

En référence à nouveau au levier 4 décrit ci-dessus, les cavités 50 et 55, qui sont symétriques par rapport à un plan longitudinal, sont de forme oblongue. En particulier la cavité 50, qui est illustrée notamment sur les figures 9 et 10, comprend tout d'abord une portion centrale 51, formant une piste de roulement pour la tête 64. Comme le montre la figure 10, cette piste 51 présente un profil cylindrique dont le diamètre D51 est voisin de celui D64 de la tête 64. Par ailleurs, l'angle a51 selon lequel s'étend cette piste cylindrique 51, est légèrement inférieur à 180° de manière à autoriser une coopération commode avec la tête 64. Referring again to the lever 4 described above, the cavities 50 and 55, which are symmetrical with respect to a longitudinal plane, are of oblong shape. In particular the cavity 50, which is illustrated in particular on the figures 9 And 10 , firstly comprises a central portion 51, forming a rolling track for the head 64. As shown in Figure 10 , this track 51 has a cylindrical profile whose diameter D51 is close to that D64 of the head 64. Furthermore, the angle a51 along which this cylindrical track 51 extends is slightly less than 180° so as to allow a convenient cooperation with head 64.

Cette piste 51 est terminée par des portions d'extrémité 52 et 53, qui sont notamment visibles sur la figure 11. Dans l'exemple illustré, ces portions d'extrémité sont sensiblement en forme de demi-sphère d'un diamètre voisin de celui D64 ci-dessus. Cependant, à titre de variante, on peut prévoir que ces portions d'extrémité présentent des profils différents. De même à titre de variante, on peut prévoir que la piste 51 suive une ligne directrice courbe. La dimension longitudinale X51 de la piste 51 est supérieure au diamètre de la tête 64, ce qui confère une possibilité de coulissement de cette tête le long de cette piste, selon la direction principale X4 du levier.This track 51 is terminated by end portions 52 and 53, which are particularly visible on the Figure 11 . In the example illustrated, these end portions are substantially in the shape of a half-sphere with a diameter close to that D64 above. However, as a variant, it can be expected that these end portions have different profiles. Likewise, as a variant, it is possible for track 51 to follow a curved guideline. The longitudinal dimension

La mise en oeuvre de la butée avant I, décrite ci-dessus, va maintenant être explicitée dans ce qui suit. On suppose que la plaque de base 10, appartenant à cette butée, est fixée sur la planche 80 d'un ski 8. Par ailleurs les figures 2 et 3 montrent une chaussure 9, susceptible d'être adaptée sur ce ski. À cet effet, de manière connue en soi, l'extrémité avant 90 de cette chaussure est pourvue de logements latéraux 91,92 lesquelles, comme on le verra dans ce qui suit, peuvent coopérer avec les ergots de serrage 24 et 34. The implementation of the front stop I, described above, will now be explained in what follows. It is assumed that the base plate 10, belonging to this stop, is fixed on the board 80 of a ski 8. Furthermore the figures 2 and 3 show a shoe 9, likely to be adapted to this ski. To this end, in a manner known per se, the front end 90 of this shoe is provided with lateral housings 91,92 which, as will be seen in the following, can cooperate with the tightening lugs 24 and 34.

Cette butée possède tout d'abord une configuration ouverte, illustrée sur les figures 2 et 3. Dans cette configuration, l'extrémité arrière 43 du levier 4 se trouve dans une position relevée, alors que son extrémité avant 42 se trouve dans une position abaissée au voisinage de la plaque 10. Par ailleurs, les pièces de serrage 2 et 3 sont mutuellement écartées. Dans ces conditions les ergots de serrage 24 et 34 sont éloignés l'un de l'autre, selon un écartement qui ne leur permet pas de coopérer avec les logements 91,92 précités.This stop firstly has an open configuration, illustrated on the figures 2 and 3 . In this configuration, the rear end 43 of the lever 4 is in a raised position, while its front end 42 is in a lowered position in the vicinity of the plate 10. Furthermore, the clamping parts 2 and 3 are mutually discarded. Under these conditions the clamping lugs 24 and 34 are distant from each other, at a spacing which does not allow them to cooperate with the aforementioned housings 91,92 .

Dans cette configuration ouverte, l'utilisateur est susceptible d'appuyer vers le bas sur l'extrémité arrière 43 du levier 4, au moyen de l'extrémité avant 90 de la chaussure. Cela entraîne le pivotement du levier, selon la flèche F4. Le déplacement vers le bas de l'extrémité 43 entraîne les organes d'articulation 6 et 7, qui induisent un pivotement vers l'intérieur des pièces de serrage, selon les flèches F2 et F3. Au terme de ce pivotement, les ergots de serrage 24 et 34 pénètrent dans les logements 91,92. In this open configuration, the user is able to press downwards on the rear end 43 of the lever 4, by means of the front end 90 of the shoe. This causes the lever to pivot, according to arrow F4. The downward movement of the end 43 causes the articulation members 6 and 7, which induce an inward pivoting of the clamping parts, according to the arrows F2 and F3. At the end of this pivoting, the clamping lugs 24 and 34 penetrate into the housings 91,92.

La butée avant se trouve alors dans sa configuration fermée, illustrée sur les figures 4 à 8. Dans cette configuration, la chaussure est solidaire en translation de la butée avant, tout en étant libre de pivoter par rapport à cette butée autour de l'axe géométrique A9. On notera que, en l'absence de verrouillage de la patte 46, la chaussure peut se désolidariser vis-à-vis de la butée avant, notamment en cas d'effort important. Cette possibilité est tout particulièrement adaptée à l'utilisation du ski, en mode descente.The front stop is then in its closed configuration, illustrated on the figures 4 to 8 . In this configuration, the shoe is integral in translation with the front stop, while being free to pivot relative to this stop around the geometric axis A9. It will be noted that, in the absence of locking of the tab 46, the shoe can become detached from the front stop, particularly in the event of significant effort. This possibility is particularly suitable for using skis in downhill mode.

De façon connue en soi, cette butée avant peut être verrouillée dans cette configuration ouverte. À cet effet, l'utilisateur bascule la patte de verrouillage 46 vers le haut, selon la flèche F46 montrée sur la figure 5. Dans ces conditions, la chaussure ne peut pas se désolidariser de la butée avant, même en cas d'effort important. Cette possibilité est tout particulièrement adaptée à l'utilisation du ski, en mode randonnée.In a manner known per se, this front stop can be locked in this open configuration. For this purpose, the user tilts the locking tab 46 upwards, according to the arrow F46 shown on the Figure 5 . Under these conditions, the shoe cannot separate from the front toe, even in the event of significant effort. This possibility is particularly suited to the use of skiing, in hiking mode.

Les figures 12 à 14 illustrent la position relative de la tête d'articulation 64 et de la cavité oblongue 50, lors de la course angulaire du levier 4. En substance, au fur et à mesure que l'extrémité arrière 43 du levier 4 pivote vers le bas, la tête 64 coulisse le long de la cavité 50. L'homme du métier déterminera la longueur X51 pour que la tête 64 ne se trouve pas bloquée au niveau des extrémités 52,53, lors du déplacement mutuel du levier 4 et des organes d'articulation 6 et 7. THE figures 12 to 14 illustrate the relative position of the articulation head 64 and the oblong cavity 50, during the angular travel of the lever 4. In essence, as the rear end 43 of the lever 4 pivots downwards, the head 64 slides along the cavity 50. A person skilled in the art will determine the length 6 and 7.

Il est à souligner que, lors de la course du levier qui permet le déplacement mutuel des pièces de serrage, avantageusement seule la surface d'articulation sphérique 64', 74' de chaque tête 64,74 vient en contact avec les parois des cavités oblongues. En d'autres termes, aucune surface non sphérique ne coopère avec ces parois, ce qui confère les avantages du système tels qu'ils ont été présentés ci-dessus.It should be noted that, during the stroke of the lever which allows the mutual movement of the clamping parts, advantageously only the spherical articulation surface 64', 74' of each head 64,74 comes into contact with the walls of the oblong cavities . In other words, no non-spherical surface cooperates with these walls, which confers the advantages of the system as presented above.

Les figures 15 et suivantes illustrent différents modes de réalisation de la butée avant, conforme à l'invention. Sur ces figures les éléments mécaniques analogues à ceux du premier mode de réalisation sont affectés des mêmes numéros de référence, augmentés respectivement des nombres 100 à 700.THE figures 15 and following illustrate different embodiments of the front stop, according to the invention. In these figures, the mechanical elements similar to those of the first embodiment are assigned the same reference numbers, increased respectively by the numbers 100 to 700.

La butée avant des figures 15 et 16, qui est conforme à une première variante de réalisation de l'invention, comprend un insert 105 dans lequel sont ménagées des cavités opposées 150 et 155. Ces cavités présentent le même profil que celui des cavités 50 et 55, à savoir qu'elles possèdent une forme oblongue. Cet insert 105 se trouve fixé dans une ouverture 159, qui débouche sur les faces latérales opposées du levier de commande 104. La fixation de cet insert, sur les parois de l'ouverture 159, est réalisée par tous moyens appropriés. Ce mode de réalisation présente des avantages spécifiques. En effet il garantit une grande facilité de fabrication du levier de commande. Par ailleurs, ce dernier présente une raideur mécanique élevée, étant donné qu'il possède une forme fermée à son extrémité arrière.The front stop of figures 15 and 16 , which conforms to a first alternative embodiment of the invention, comprises an insert 105 in which opposite cavities 150 and 155 are provided. These cavities have the same profile as that of the cavities 50 and 55, namely that they have an oblong shape. This insert 105 is fixed in an opening 159, which opens onto the opposite side faces of the control lever 104. The fixing of this insert, on the walls of the opening 159, is carried out by any appropriate means. This embodiment has specific advantages. In fact, it guarantees great ease of manufacturing of the control lever. Furthermore, the latter has high mechanical stiffness, given that it has a closed shape at its rear end.

La butée avant des figures 17 et 18, qui est conforme à une seconde variante de réalisation de l'invention, fait appel à un organe auxiliaire 205 en forme de diabolo. Cet organe auxiliaire comprend deux cupules, délimitant une gorge médiane 258. Ces cupules forment des cavités 250 et 255 qui, contrairement aux modes de réalisation ci-dessus, ne sont pas oblongues. En substance ces cavités présentent une forme sphérique, avec un diamètre voisin de celui de la tête 264, 274 d'un organe d'articulation respectif 206, 207. Par conséquent, chaque organe d'articulation possède une liaison de type rotule vis-à-vis des cavités, à savoir qu'il possède trois degrés de liberté en rotation par rapport à ces cavités, tout en étant lié en translation par rapport à ces dernières.The front stop of figures 17 and 18 , which conforms to a second alternative embodiment of the invention, uses an auxiliary member 205 in the form of a diabolo. This auxiliary member comprises two cups, delimiting a median groove 258. These cups form cavities 250 and 255 which, unlike the above embodiments, are not oblong. In substance these cavities have a spherical shape, with a diameter close to that of the head 264, 274 of a respective articulation member 206, 207. Consequently, each articulation member has a ball joint type connection with respect to -screw the cavities, namely that it has three degrees of freedom in rotation relative to these cavities, while being linked in translation relative to the latter.

Lors du pivotement du levier de commande, l'organe auxiliaire 205 est libre de coulisser selon l'axe principal du levier de commande 204, selon la flèche F205. A cet effet, l'extrémité arrière 243 du levier 204 est ouverte, en présentant une forme de C. Par ailleurs, les parois de cette extrémité ouverte sont munies d'une rainure médiane 249, le long de laquelle peut se déplacer la gorge 258 de l'organe auxiliaire 205. Ce mode de réalisation présente des avantages spécifiques. En effet, il garantit de très faibles frottements, sur des transmissions d'efforts élevés.When the control lever pivots, the auxiliary member 205 is free to slide along the main axis of the control lever 204, according to arrow F205. For this purpose, the rear end 243 of the lever 204 is open, presenting a C shape. Furthermore, the walls of this open end are provided with a central groove 249, along which the groove 258 can move. of the auxiliary member 205. This embodiment has specific advantages. In fact, it guarantees very low friction on high force transmissions.

La butée avant des figures 19 et 20, qui est conforme à une troisième variante de réalisation de l'invention, diffère de la variante des figures 17 et 18 en ce que les têtes d'articulation 364, 374 viennent directement en contact avec des surfaces planes du levier de commande. De façon plus précise l'extrémité arrière 343 de ce levier 304 délimite une chambre 344, laquelle est bordée par lesdites surfaces planes 345 et 346, formant des surfaces respectivement supérieures et inférieures de cette chambre. Dans l'exemple illustré cette chambre 344 et ouverte vers l'arrière, étant entendu qu'elle peut être fermée par une paroi non représentée. On notera également que, sur la perspective de la figure 19, une partie de la paroi supérieure de la chambre a été arrachée, pour une meilleure visibilité.The front stop of figures 19 and 20 , which conforms to a third alternative embodiment of the invention, differs from the variant of figures 17 and 18 in that the articulation heads 364, 374 come directly into contact with flat surfaces of the control lever. More precisely, the rear end 343 of this lever 304 delimits a chamber 344, which is bordered by said flat surfaces 345 and 346, forming respectively upper and lower surfaces of this chamber. In the example illustrated, this chamber 344 is open towards the rear, it being understood that it can be closed by a wall not shown. It should also be noted that, from the perspective of Figure 19 , part of the upper wall of the chamber has been torn off, for better visibility.

Dans cette variante des figures 19 et 20, les têtes 364,374 des organes d'articulation sont susceptibles de coulisser le long des surfaces planes 345,346, mentionnées ci-dessus, selon l'axe principal du levier 304. Par ailleurs, comme dans le mode de réalisation des figures 17 et 18, ces têtes 364,374 en forme de portion de sphère coopèrent avec des cavités 250,255 ménagées dans l'organe auxiliaire 305. En revanche, contrairement aux figures 17 et 18, cet organe auxiliaire 305 n'est pas guidé par les parois du levier. Ainsi les efforts verticaux sont transmis directement depuis les organes d'articulation au levier de commande, alors que les efforts horizontaux sont transmis d'une tête sphérique à l'autre, par l'intermédiaire de l'organe auxiliaire. Ce mode de réalisation de ces figures 19 et 20 présente des avantages spécifiques. En particulier il fait appel à des pièces mécaniques, dont la structure est simple.In this variant of figures 19 and 20 , the heads 364,374 of the articulation members are capable of sliding along the flat surfaces 345,346, mentioned above, along the main axis of the lever 304. Furthermore, as in the embodiment of the figures 17 and 18 , these heads 364,374 in the shape of a portion of a sphere cooperate with cavities 250,255 provided in the auxiliary member 305. On the other hand, unlike the figures 17 and 18 , this auxiliary member 305 is not guided by the walls of the lever. Thus the vertical forces are transmitted directly from the articulation members to the lever control, while the horizontal forces are transmitted from one spherical head to the other, via the auxiliary member. This mode of realization of these figures 19 and 20 has specific advantages. In particular it uses mechanical parts, the structure of which is simple.

La butée avant des figures 21 à 24, qui est conforme à une quatrième variante de réalisation de l'invention, est voisine de la variante des figures 19 et 20. Elle diffère cependant de cette troisième variante, notamment en ce qu'elle est dépourvue d'un organe auxiliaire, tel celui 305. À cet effet chaque tête 464,474 en forme de portion de sphère est équipée d'une saillie 465,475, laquelle coopère avec un évidement 466,476 ménagé dans la tête en regard. La coopération de ces saillies et de ces évidements assure une possibilité de pivotement entre ces têtes, autour d'un axe noté A 406. Cet axe de pivotement est distant des centres respectifs C464 et C474 des têtes 464,474. The front stop of figures 21 to 24 , which conforms to a fourth variant embodiment of the invention, is close to the variant of figures 19 and 20 . However, it differs from this third variant, in particular in that it is devoid of an auxiliary member, such as that 305. To this end, each head 464,474 in the form of a portion of a sphere is equipped with a projection 465,475, which cooperates with a recess 466,476 made in the facing head. The cooperation of these projections and these recesses ensures a possibility of pivoting between these heads, around an axis denoted A 406. This pivot axis is distant from the respective centers C464 and C474 of the heads 464,474.

En service, comme dans le mode de réalisation précédente, les têtes sphériques prennent indirectement appui contre les surfaces planes de la chambre 444, avec possibilité de coulissement le long de l'axe principal du levier. Ce mode de réalisation présente des avantages spécifiques. En effet il autorise une réduction du nombre d'éléments mécaniques, tout en permettant une transmission directe des efforts depuis les têtes d'articulation sphériques vers le levier de commande.In use, as in the previous embodiment, the spherical heads bear indirectly against the flat surfaces of the chamber 444, with the possibility of sliding along the main axis of the lever. This embodiment has specific advantages. In fact, it allows a reduction in the number of mechanical elements, while allowing direct transmission of forces from the spherical joint heads to the control lever.

La butée avant des figures 25 et 26, qui est conforme à une cinquième variante de réalisation de l'invention, est voisine de la variante des figures 21 à 24. Elle diffère cependant de cette quatrième variante, notamment en ce que chaque tête 564,574 présente sensiblement une forme de demi-sphère. Par ailleurs ces deux demi sphères sont mutuellement reliées par un axe physique 565, qui garantit une possibilité de rotation mutuelle entre ces deux demi sphères, autour d'un axe noté A506. Contrairement aux figures 21 à 24, cet axe de rotation passe par les centres respectifs C564 et C574 des deux demi-sphères 564 et 574, lesquels sont confondus. Ce mode de réalisation présente des avantages spécifiques, qui sont notamment reliés à sa simplicité structurelle.The front stop of figures 25 and 26 , which conforms to a fifth alternative embodiment of the invention, is close to the variant of figures 21 to 24 . However, it differs from this fourth variant, in particular in that each head 564,574 has substantially the shape of a half-sphere. Furthermore, these two half-spheres are mutually connected by a physical axis 565, which guarantees a possibility of mutual rotation between these two half-spheres, around an axis denoted A506. Contrary to figures 21 to 24 , this axis of rotation passes through the respective centers C564 and C574 of the two half-spheres 564 and 574, which coincide. This embodiment has specific advantages, which are notably linked to its structural simplicity.

La butée avant des figures 27 et 28, qui est conforme à une sixième variante de réalisation de l'invention, diffère des variantes précédentes notamment en ce qui concerne la structure du levier 604. En effet, dans les précédentes variantes, les leviers 4 à 504 sont montés sur leur chape grâce des orifices circulaires. Au contraire, sur les figures 27 et 28, le montage du levier 604 est assuré grâce à un orifice oblong 649. Par ailleurs, on retrouve une cavité 650 de forme sphérique, et non pas oblongue comme dans le premier mode de réalisation.The front stop of figures 27 and 28 , which conforms to a sixth variant embodiment of the invention, differs from the previous variants in particular with regard to the structure of the lever 604. In fact, in the previous variants, the levers 4 to 504 are mounted on their yoke thanks to circular holes. On the contrary, on the figures 27 and 28 , the mounting of the lever 604 is ensured thanks to an oblong orifice 649. By elsewhere, we find a cavity 650 of spherical shape, and not oblong as in the first embodiment.

En d'autres termes la possibilité de coulissement entre le levier de commande et des organes d'articulation, matérialisée par la flèche f604, est assurée au niveau de l'orifice oblong dans ce sixième mode de réalisation, et non pas au niveau des cavités oblongues comme dans le premier mode de réalisation. La butée avant illustrée sur ces figures 27 et 28 présente des avantages spécifiques, liés notamment à la simplification de la liaison entre les organes d'articulation et le levier de commande. Cela garantit une maîtrise très satisfaisante de l'ensemble du système.In other words the possibility of sliding between the control lever and the articulation members, materialized by the arrow f604, is ensured at the level of the oblong orifice in this sixth embodiment, and not at the level of the cavities oblong as in the first embodiment. The front stop shown on these figures 27 and 28 presents specific advantages, linked in particular to the simplification of the connection between the articulation members and the control lever. This guarantees very satisfactory control of the entire system.

La butée avant des figures 29 et 30, qui est conforme à une septième variante de réalisation de l'invention, diffère du premier mode de réalisation en ce qui concerne la structure de l'organe d'articulation. En effet, sur les figures 29 et 30, la surface d'articulation de chaque organe d'articulation 706 et 707 est formée, non pas par une tête en saillie, mais par une cavité 764 et 774. Par ailleurs le levier de commande 704 est équipé d'une tige 749 sur laquelle coulisse un organe d'articulation complémentaire 741. Ce dernier possède une tête sphérique 747, susceptible de coopérer avec chacune des cavités ci-dessus 764 et 774. Ce mode de réalisation des figures 29 et 30 constituent donc une solution de type miroir, vis-à-vis du mode de réalisation des figures 1 à 13. Il présente des avantages spécifiques, notamment en ce qu'il confère une grande simplicité de fabrication aux différentes pièces.The front stop of figures 29 and 30 , which conforms to a seventh alternative embodiment of the invention, differs from the first embodiment with regard to the structure of the articulation member. Indeed, on the figures 29 and 30 , the articulation surface of each articulation member 706 and 707 is formed, not by a projecting head, but by a cavity 764 and 774. Furthermore, the control lever 704 is equipped with a rod 749 on which slides a complementary articulation member 741. The latter has a spherical head 747, capable of cooperating with each of the above cavities 764 and 774. This embodiment of the figures 29 and 30 therefore constitute a mirror type solution, with respect to the mode of realization of the figures 1 to 13 . It has specific advantages, in particular in that it gives great simplicity of manufacturing to the different parts.

L'invention n'est pas limitée aux exemples décrits et représentés ci-dessus. Ainsi, dans les différents modes de réalisation ci-dessus, chaque organe d'articulation coopère avec un unique ressort et une unique tige. Cependant, à titre de variante non représentée, on peut prévoir que chaque organe d'articulation coopère avec deux voire trois ressorts, ainsi que deux ou trois tiges. Cependant l'utilisation d'un unique ressort et d'une unique tige constitue un mode de réalisation préféré. En effet, une telle utilisation est plus particulièrement avantageuse pour éviter tout hyper statisme intempestif.The invention is not limited to the examples described and represented above. Thus, in the different embodiments above, each articulation member cooperates with a single spring and a single rod. However, as a variant not shown, it can be provided that each articulation member cooperates with two or even three springs, as well as two or three rods. However, the use of a single spring and a single rod constitutes a preferred embodiment. Indeed, such use is more particularly advantageous to avoid any untimely hyper droop.

Claims (15)

  1. Front stop (I) for sliding equipment, in particular for touring skiing or surfing, telemarking as well as Nordic skiing and cross-country skiing, said front stop comprising
    - a base plate (10) comprising means for fixing to the main body of this sliding equipment, in particular a board (80) of said ski (8),
    - two clamping parts (2,3) arranged on either side of a median plane of said stop, each clamping part comprising an upper end provided with a clamping lug (24,34), as well that a lower end provided with a support rod,
    - a control lever (4) articulated on the base plate, around a transverse axis (41),
    - two connecting members (6,7), each of which is guided by at least one respective rod (26,36), each connecting member being able to cooperate with the control lever,
    - two elastic means (27, 37), each elastic means being able to push a respective connecting member against the control lever,
    the clamping parts each being articulated around a respective longitudinal axis, so as to be mutually movable between
    -- a so-called closed or close configuration, in which said clamping parts allow the mutual approximation of the clamping lugs, so that these lugs cooperate with housings provided in a shoe, thus forming a pivot axis of this shoe, and
    -- a so-called open or spaced configuration, in which the clamping lugs do not cooperate with said housings, so as to release the shoe from the clamping parts,
    this stop being characterized in that each connecting member is an articulation member comprising an articulation surface (64',74'; 164',174'; 264',274'; 364',374'; 464' ,474'; 564',574'; 764',774') in the shape of a portion of a sphere, capable of cooperating with a complementary articulation surface provided, either on the lever, or on an auxiliary member mounted on this lever.
  2. Stop according to the preceding claim, in which the articulation surface in the form of a portion of a sphere belongs to a head (64,74; 164,174; 264,274; 364,374; 464,474; 564,574) in the form of a portion of a sphere.
  3. Stop according to the preceding claim, in which said complementary articulation surface is an oblong cavity (50,55; 150,155) provided on a respective side wall of the control lever (4; 104).
  4. Stop according to one of the preceding claims, in which each oblong cavity (50,55) is formed directly in the side wall of the control lever.
  5. Stop according to one of claims 1 to 3, in which each oblong cavity (150,155) is formed in an insert (105), which is attached to a recess in the control lever.
  6. Stop according to one of claims 2 to 5, in which the complementary articulation surface is a spherical cavity (250,255; 350,355) provided on said auxiliary member.
  7. Stop according to the preceding claim, in which said auxiliary member (205) is mounted sliding relative to the control lever, in particular thanks to a guide groove fitted to the control lever, this guide groove being able to cooperate with a groove of said auxiliary member.
  8. Stop according to claim 6, in which said auxiliary member (305) is free to slide relative to the control lever, without coming into contact with this control lever.
  9. Stop according to one of claims 2 to 5, in which the two spherical heads (464,474; 564,574) of the articulation members are mutually connected directly, being able to pivot one relative to the other around an axis of rotation (A406; A506) and being able to make direct contact with the walls of the control lever.
  10. Stop according to one of the preceding claims, in which the control lever has an oblong articulation orifice (649) on its mounting yoke, so as to give it the possibility of sliding along its main axis.
  11. Stop according to claim 1, in which the articulation surfaces in the form of a portion of a sphere belong to a cavity (764,774) in the form of a portion of a sphere.
  12. Stop according to any one of the preceding claims, in which, during the movement of the clamping parts between their closed configuration and their open configuration, only the spherical articulation surfaces of each articulation member come into contact with the complementary articulation surfaces.
  13. Stop according to one of the preceding claims, in which the spherical articulation surfaces extend over a portion of the sphere greater than 10°, at least greater than 20°, and/or in which the spherical articulation surfaces extend extend over a portion of a sphere whose diameter is between 2 and 15 millimeters.
  14. Stop according to any one of the preceding claims, in which each elastic means comprises a single spring (27,37), in the interior volume of which extends a single support rod (26,36), knowing that each articulation member advantageously comprises a collar, allowing the support of one end of said single spring.
  15. Sliding equipment, in particular for touring skiing or surfing, telemarking as well as Nordic skiing and cross-country skiing, said sliding equipment comprising a front stop (I) according to any one of the preceding claims.
EP21152435.0A 2020-01-24 2021-01-20 Front binding for a gliding device and gliding device provided with such a front binding Active EP3854465B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20000037 2020-01-24
FR2001367A FR3106501B1 (en) 2020-01-24 2020-02-12 Front stop for gliding device, and gliding device equipped with such a front stop

Publications (3)

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EP3854465A1 EP3854465A1 (en) 2021-07-28
EP3854465B1 true EP3854465B1 (en) 2024-05-15
EP3854465C0 EP3854465C0 (en) 2024-05-15

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EP21152435.0A Active EP3854465B1 (en) 2020-01-24 2021-01-20 Front binding for a gliding device and gliding device provided with such a front binding

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2659940B1 (en) * 2012-05-04 2014-12-10 Atk Race S.R.L. Toe piece for a mountaineering ski binding
EP2722081B1 (en) * 2012-10-22 2015-11-25 Salomon S.A.S. Front abutment of a binding of a snow gliding device and snow gliding device provided with such a binding
EP3050601B1 (en) * 2015-01-30 2017-12-20 Atk Race S.R.L. A toe-piece for an alpine ski binding

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT381458B (en) 1985-03-25 1986-10-27 Barthel Fritz TOURING SKI BINDING
US8439389B2 (en) 2008-04-03 2013-05-14 G3 Genuine Guide Gear Inc. Toe unit for alpine touring binding
DE102010029647A1 (en) 2010-06-02 2011-12-08 Salewa Sport Ag touring binding
FR2991592B1 (en) * 2012-06-12 2016-08-26 Rossignol Sa TORSIONALLY AUTOMATIC TRIGGER STOP
DE102016204555A1 (en) * 2016-03-18 2017-09-21 Fritz Barthel Front unit for a sliding board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2659940B1 (en) * 2012-05-04 2014-12-10 Atk Race S.R.L. Toe piece for a mountaineering ski binding
EP2722081B1 (en) * 2012-10-22 2015-11-25 Salomon S.A.S. Front abutment of a binding of a snow gliding device and snow gliding device provided with such a binding
EP3050601B1 (en) * 2015-01-30 2017-12-20 Atk Race S.R.L. A toe-piece for an alpine ski binding

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Publication number Publication date
EP3854465A1 (en) 2021-07-28
EP3854465C0 (en) 2024-05-15

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