EP2329747B1 - Tension device for curtain rope - Google Patents

Description

Field of the invention

The invention relates to a tensioning device for tensioning a rope according to the preamble of claim 1, a non-claimed fastening device, in particular for fastening a tensioning device to a window frame and a non-claimed fastening device, in particular for fastening a tensioning device on a flat surface.

State of the art

For fastening curtains rope tensioning systems have existed for some time. The principle underlying the cable tension is based on the fact that a first clamping element with an external thread cooperates with a second clamping element with an internal thread. Characterized in that the first and the second clamping element will be screwed together whose distance is shortened to each other. At the second tensioning element a rope is fixed with a first end. The second end of the rope is fixed to another rope tensioning system or optionally at an angle. The first clamping elements or the clamping element and the angle are fixed to the ground by screw. When shortening the distance of the first and second clamping element to each other, the rope is tensioned. For a reliable mounting of the rope to the second clamping element this is guided through a through hole on the second clamping element and by means of a fashion screw o. jammed with the same. This system is comparatively easy to assemble compared to curtain rails and also has a discreet appearance often desired in the interior trim.

A disadvantage proves in this cable clamping system that for rotating the second clamping element relative to the first clamping element always a tool is needed. This may be a fork wrench, which is attached to a designated flattened on both sides of the second clamping element for transmitting the torque. There are also variants with a passage opening transverse to the longitudinal axis of the second clamping element, through which a rod, for example an Allen wrench, is plugged and so a sufficiently high torque: is transmitted to the second clamping element.

Another disadvantage is given by the fact that during the rotation of the second clamping element, the rope is inevitably mitverdrillt and is therefore exposed to additional loads.

Another disadvantage is that the clamping system is fixed by screws to the substrate and the surface of the substrate after removing the rope tensioning system has unsightly injuries.

The DE 201 07 752 U1 shows a curtain clip with a connector which is connected to a mounting frame unit. The connector includes a female member and a male member. At the first end of the connector. an internal thread is arranged, which cooperates with an external thread of the plug element. At the second end of the connector, a ball head clasp is arranged, which is rotatably received in a ball socket bore of the mounting frame unit. In a plug-in element axially arranged through hole a steel cable can be accommodated, which is fixed by means of a hold-down screw on the plug-in element. Therefore, a tool, for example an Allen wrench, is required for mounting the steel cable. Furthermore, the steel cable must be threaded into the through hole before it can be fixed with the hold-down screw. Although the steel cord can be clamped without tools, the plug-in element is to be held against the direction of rotation during the rotation of the bushing element in order not to be twisted together with the bushing element. The assembly and tension of the steel rope proves to be expensive in this curtain clip.

In the DE 297 22 144 U1 a suspension cable device for curtains is shown. A carrying cable is held on both sides in the partial bore of a clamping sleeve by means of a clamping screw. Previously, the carrying part must be guided with its two end through the rope bore of a clamping screw. The clamping screw is screwed into a sleeve-like fastening fitting, which is attached to a mounting bracket for fixing to a wall. The clamping screws on both ends of the support cable are screwed into the associated mounting bracket, so that the clamping sleeve are pushed more or less into the interior of Befestigungsbescläge and the Tool feasible. Furthermore, the implementation of the support cable is complicated by the clamping screws and the ferrules in the correct order and therefore not user-friendly.

Object of the invention

Object of the present invention is therefore to propose a rope tensioning device, which is easy to tighten. Another goal is to set the rope without effort on the rope tensioning device. It is also an object to show a rope tensioning device which can be fixed to the same without damaging the ground.

description

According to the invention the object is achieved in a tensioning device for tensioning a rope according to the preamble of claim 1, characterized in that the first clamping part consists of two symmetrical clamping parts, which have a common cut surface and that on the first clamping part along the longitudinal axis, a passage opening is provided which the Receiving the rope is used and which is formed by the fact that at the two clamping parts each along the longitudinal axis a recess is provided, wherein in the assembled state, the recesses form the passage opening. Due to the bipartite of the first clamping part, it is not necessary to thread the rope in a passage opening on the first clamping part, but the rope is inserted in a simple manner between the two clamping parts. A further advantage is that the clamping parts can be produced in one-piece injection-molded molds of simple design without having to subsequently cut a thread into the first clamping part. This form of production is inexpensive and can be carried out with high cycle rates. The inclusion of the rope in the first clamping part designed by the intended passage opening as very easy, as this is only inserted into the recess of the first clamping member and the second clamping member is placed over the first. The clamping effect of the first clamping member, which acts on the rope, is very good, since it acts along the entire longitudinal axis of the first clamping part.

In a preferred embodiment, the second clamping member is rotatably supported about the longitudinal axis on the support. The inventive clamping device has the advantage that can be done by the holder of the second clamping part on the support of the tensioning process of the rope with one hand. This can be attributed to the fact that the tensioning part, which is held by the support, is only to be twisted during the tensioning process and can no longer be held manually until the threads of the two tensioning parts are in operative connection with one another. The tensioning device is suitable for receiving ropes, preferably wire ropes, as well as for receiving cords, such as nylon cords.

In this preferred embodiment, the first clamping part has an external thread, which with a. Internal thread of the second clamping part cooperates. In addition, the second clamping part is held on the support. This ensures that the first clamping part is pulled into the same by turning the second clamping part, without the two clamping parts must be laboriously aligned with each other to cooperate.

Advantageously, nubs or recesses are provided on the clamping parts along their common cut surface, which align the clamping parts form-fitting to one another. As a result, the merging and aligning of the two clamping parts is easy and quick to perform.

In order to further increase the clamping force which acts on the rope from the first tensioning part, a plurality of elevations are advantageously provided in the depressions along the longitudinal axis. In order to further increase the pull-out safety of the rope from the first clamping part, it is conceivable that the rope protrudes beyond the first clamping part and at this point of the rope a node, a clamping screw o. Ä. Are mounted.

In order to be able to generate a clamping force on the first clamping part, one end of the first clamping part advantageously has the shape of a wedge.

In a preferred embodiment, the wedge is flattened on at least one side parallel to the longitudinal axis. Since this flattening is positively received in the support, the first clamping part is reliably secured against rotation during the tensioning operation of the rope. This is important insofar as a rotation of the rope unnecessarily burden the same unnecessarily and would make the tensioning process more difficult. In order to reinforce the anti-rotation even further, the wedge has expediently at least one groove which is aligned parallel to the longitudinal axis. However, for the pure clamping function of the first clamping part, the at least one flattening and the groove are not required.

In order to build a clamping force on the rope and to ensure the above-described anti-rotation, a through hole is expediently provided on the support, which has a negative mold of the wedge, so that the wedge is forcibly guided in the through hole and at a relative displacement of the wedge in the passage opening along the longitudinal axis of the two clamping members are pressed together along their cutting surface. The deeper the first clamping part is pulled into the through hole, the greater the clamping force generated. The passage opening is designed so that the wedge is not fully retractable in selbige. This design feature further increases the clamping force.

The fact that the passage opening on the side facing away from the wedge advantageously has the shape of a circle through which the first clamping part is performed with its external thread, it is possible to receive the second clamping part rotatably on the support at this point.

In a particularly preferred embodiment, the rotation of the second clamping member relative to the support is manually carried out. The clamping operation is therefore possible without the aid of additional tools.

Suitably, the second clamping part has the shape of a circular cylinder whose axis of rotation is the common longitudinal axis of the first and second clamping part. The shape of the rotary cylinder allows easy rotation of the second clamping member to perform the clamping operation.

In a particularly preferred embodiment, the second clamping part has on its NEN end faces circular paragraphs, through the centers of which the longitudinal axis extends and which served the rotatable mounting of the second clamping part to the support. The circular paragraphs allow the second clamping member is rotatably supported on the support in a simple manner. The circular paragraphs are added to the support in the passage opening and a further circular opening. The inner diameter of these openings is dimensioned such that the circular paragraphs are rotatable therein and stored without play.

Zeckmässigerweise recessed grips are provided on the mantle surface of the second clamping part. As a result, the manual rotation of the second clamping part is particularly simple.

Another, not claimed aspect relates to a fastening device, in particular for fastening a clamping device to a window frame. The fastening device has the advantage that the holding part has an L-shape with a first and a second leg and the support along the first leg in stages with the holding part can be latched. The determination of the tensioning device on a frame is extremely flexible and comfortable, since the fastening device can be adapted to different frame thicknesses by the stepwise locking. Further, the attachment to the frame without damaging it, since the attachment is based solely on clamping forces between the holding part and the support.

In order to have an even greater flexibility in the adaptation of the fastening device to the frame thickness, the first and the second leg are advantageously two items, which are locked together to the holding part. This two-part construction of the holding part has the advantage that the extension of the second clamping part, which locks with the first clamping part, can have different lengths. The holding part can be easily and inexpensively adapted to different frame thicknesses by second legs are used with different lengths extensions.

In an unclaimed embodiment, the support has on one end face two elongated guide extensions, which can be delivered in two U-shaped receptacles on the first leg. This forced guidance allows the support and the L-shaped retaining part to be automatically aligned with each other during attachment to a frame.

In order to be able to build up the clamping effect between the support and the L-shaped holding part, a sawtooth-like surface is advantageously formed on the end face of the support between the elongated guide extensions.

Advantageously, the sawtooth-like surface cooperates with a tab on the first leg of the holding part by the tab also has a sawtooth-like surface on its side facing the support, wherein the surfaces are operatively connected in such a way that the support relative to the holding part in a direction parallel to the elongated Fülirungsfortsätzen is displaceable and can be fixed in the opposite direction by the sawtooth-like surfaces on the holding part. By this design feature, a clamping action can be realized, which holds the support together with the holding part securely on the frame.

In order to ensure a secure operative connection of the two sawtooth-like surfaces, the tab expediently has a bias which presses the sawtooth-like surface of the tab against the sawtooth-like surface of the support.

To increase the clamping force between the support and the holding part, the angle of the L-shaped holding member is advantageously slightly smaller than 90 degrees. When fixing the fastening device to a frame, the second leg of the holding part is pressed against the frame by the interaction of the sawtooth-like surfaces. Since the angle between the two legs can be extended by the contact pressure to 90 degrees, the contact pressure can be increased by the restoring force of the L-shaped holding part.

In order to produce the largest possible backfound force described above, the second leg of the holding part is made of metal.

Yet another aspect not claimed relates to a fastening device, in particular for fastening a tensioning device on a level surface. The fastening device has the advantage that the support can be latched with a holding part, which can be fixed to the flat surface, for example by a screw connection. This fastening device ensures a stable and at the same time attachable very fast attachment to a flat surface. For connection to the substrate, in addition to screws, adhesives, double-sided adhesive tape, etc. are also used. conceivable.

In order to provide a stable, yet rapidly producible connection between the support and the holding part, the holding part has expediently at least two opposite hooks, which are deliverable in at least two openings on the support and lock with the support.

Characterized in that the clamping device described above is provided to be advantageous latched with two holding parts, it is possible to set the clamping device on almost any surface. The rope can be stretched vertically, horizontally but also in any other position between two rope tensioning devices. If it is fixed to a window frame with one of the holding parts described above, this has the advantage that the window is open even when the curtain is closed. The user is given the opportunity with the inventive cable tensioning set to adapt it to his needs. The adjustment possibilities consist of the position of the rope, the length of the rope by simply cutting the same and the manner of fixing the rope tensioning devices by selecting a pair of one of the two holding parts.

In a particularly preferred embodiment, the second clamping part is rotatably held about the longitudinal axis on the support. The tensioning device according to the invention is thereby operated with one hand and without tools.

Figur 1:

eine perspektivische Ansicht der erfindungsgemassen Seilspann- vorrichtung,

Figur 2:

einen Support in einer ersten perspektivischen Ansicht;

Figur 3:

den Support aus Figur 2 in einer zweiten, perspektivischen Ansicht;

Figur4:

ein erstes Spannteil in einer perspektivischen Ansicht;

Figur 5:

perspektivische Ansicht eines Klemmteils;

Figur 6:

perspektivische Ansicht eines zweiten Spannteils;

Figur 7:

ein Halteteil in einer ersten perspektivischen Ansicht;

Figur 8:

das Halteteil aus Figur 7 in einer zweiten perspektivischen Ansicht;

Figur 9:

ein L-förmiges Halteteil vor dem zusammengesetzten Zustand;

Figur 10:

das L-förmige Halteteil im zusanmengesetzten Zustand;

Figur 11:

die erfindungsgemasse Seilspannvorrichtung angeordnet an einem. Fensterrahmen in horizontaler Lage;

Figur 12:

die Seilspannvorrichtung angeordnet an einem Fensterrahmen in schräger Lage;

Figur 13:

die Seilspannvornchtung angeordnet an einem Fensterrahmen in vertikaler Lage und

Figur 24;

die Seilspannvorrichtung angeordnet vor einem Fenster in vertikal ler Lage, wobei die Seilspannvorrichtung am Fensteruntergrund festgelegt ist.

In the following, the invention will be described in more detail in a schematic representation with reference to the figures. It shows:

FIG. 1:

a perspective view of the inventive cable tensioning device,

FIG. 2:

a support in a first perspective view;

FIG. 3:

the support FIG. 2 in a second, perspective view;

Figur4:

a first clamping part in a perspective view;

FIG. 5:

perspective view of a clamping part;

FIG. 6:

perspective view of a second clamping part;

FIG. 7:

a holding part in a first perspective view;

FIG. 8:

the holding part off FIG. 7 in a second perspective view;

FIG. 9:

an L-shaped holding part before the assembled state;

FIG. 10:

the L-shaped holding part in zusanmengesetzten state;

FIG. 11:

the inventive rope tensioning device arranged on a. Window frame in horizontal position;

FIG. 12:

the rope tensioning device arranged on a window frame in an oblique position;

FIG. 13:

the Seilspannvornchtung arranged on a window frame in a vertical position and

Figure 24;

the rope tensioning device arranged in front of a window in a vertical position, wherein the rope tensioning device is fixed to the window base.

In FIG. 1 The rope tensioning device 11 consists of a support 13, a first clamping part 15 and a second clamping part 17. The first and the second clamping part have a common longitudinal axis 19, which also the axis of rotation of the second clamping part 17 represents.

In the FIGS. 4 and 5 the first clamping part 15 is shown in detail. The first clamping part 15 consists of two symmetrical clamping parts 21, 23, which have a common cut surface 24. The first clamping part 15 has an external thread 25, which occupies about 2/3 of the length. The one end of the clamping part 15 is formed as a wedge 27. The wedge 27 has two flat surfaces 29 on opposite sides parallel to the longitudinal axis 19. In addition, two grooves 31 are provided on the wedge 27.

At each of the two clamping parts 27,29 along the longitudinal axis 19, a recess 33 is provided. In the assembled state, the recesses 33 form a passage opening 34, which serves to receive a cable 37 ( FIG. 5 ). In the recesses 33, a plurality of punctiform and spaced elevations 35 are arranged, which increase the clamping action of the first clamping member 15 on the cable 37. In addition, 27 hook-shaped clamping reinforcements 39 are arranged in the recesses 33 in the region of the wedge, which the jamming of the rope In the assembled state of the first clamping part 15, the clamping parts 21,23 are aligned by nubs 41 and recesses (not shown in the figures), which are arranged on the cutting plane 24, relative to each other.

The second clamping part 17 has the shape of a rotary cylinder and has an internal thread 43 whose center axis is the longitudinal axis 19 and cooperates with the external thread 25 ( FIG. 6 ). At its end faces 45,47 circular shoulders 49 are formed, which allow the second clamping member 17 is rotatably supported on the support 13. On the lateral surface of the second clamping member 17 recessed grips 51 are provided, which facilitate the manual rotation of the second clamping member 17 relative to the support 13.

The wedge 27 is received in a through hole 53 of the support 13 ( FIG. 1 ). The passage opening 53 has the negative shape of the wedge 27. This design feature makes it possible that the clamping parts 21,25 are pressed against each other more and more, the deeper the first clamping member 15 is in the through hole 53. How out FIG. 1 can be seen, the through hole 53 is dimensioned so that the first clamping part 15 is not completely in selbiger receivable. As a result, the clamping force transmitted from the support 13 to the first clamping part 15 is maximized. The special shape of the wedge 27, which comes about through the surfaces 29 and the grooves 31, makes it impossible to twist the first clamping part 15 in the passage opening 53.

The FIGS. 2 and 3 show that the support 13 has a recess which serves to receive the second clamping part 17 has. Thus, the second clamping member 17 is rotatably supported on the support, the through hole 53 on the side facing away from the wedge in the form of a circle 55. The through hole 53 opposite, is provided on the support 13, a further circular opening 57. The openings 55,57 are dimensioned in their inner diameters such that in the same the circular shoulders 49 of the second clamping member 17 are rotatably received. The length of the recess on the support 13 is dimensioned such that the second clamping part 17 engages in the openings 55,57 by means of the circular shoulders 49. The determination of the support 13 on a substrate can be done in two ways. For attachment of the support to a frame construction, for example on a window frame 59, an L-shaped holding part 61 with two legs 63,65 can be used. In FIGS. 9 and 10 It is shown that the legs 63,65 are formed as two individual parts. The connection to the L-shaped holding part 61 results from the fact that the leg 65 has an extension 68, on which a barb 66 is provided. By means of the barb 66, the second leg 65 can be latched to the first leg 63. This two-part construction of the holding part 61 has the advantage that the extension 68 can have different lengths. The holding part 63 can be easily and inexpensively adapted to different frame thicknesses by using legs 65 with extensions 68 of different lengths. At the passage opening 53 facing away from the end face 67 of the support 13 two elongated guide projections 69 are arranged ( FIG. 3 ). The guide projections 69 cooperate with two U-shaped receptacles 71 which flank the leg 63. For latching the holding part 61 with the support 13, sawtooth-like surfaces 73, 75 are provided on the end face 67 and on the side of the leg 63 which faces the end face 67 (not visible in the figures). The surfaces lock into each other steplessly until the distance between the support 13 and the leg 65 corresponds to the thickness of the frame. This creates a clamping action between the support 13, leg 65 and frame, which holds the rope tensioning device 11 to the frame. For this connection to be detachable, the surface 75 is arranged on a lug 77, which can be bent away from the surface 73 manually. The leg 65 is preferably made of metal and the angle between the two legs is preferably slightly less than 90 degrees. This has the consequence that the clamping force acting between the leg 65 and the support 13 is improved.

For fastening the cable tensioning device 11 by means of screws or adhesive bonding to a flat surface, a holding part 81 is provided ( FIGS. 7 and 8 ). On the holding part 81 openings 83,85 are provided, which serve to receive screws. For locking the holding part 81 with the support 13 hooks 87,89,91 are provided on the holding part 81. To receive the hooks 87, 89, 91, rectangular openings 93, 95, 97 are provided on the support 13.

The assembly of the rope tensioning device 11 works as follows: First, the support 13 is to be fixed to a ground by means of the holding part 61 or 81. If the determination by means of screws or adhesive bonding, so the holding member 81 is to be selected. Once this is fixed to the ground, the support 13 is plugged onto the holding part 81 and locked with selbigem by the hook 87,89,91 are in operative connection with the support 13.

If the support is to be fixed to a frame 59, then the L-shaped holding part 61 is to be selected. The holding part 61 may be temporarily held on the frame 59 by double-sided adhesive tape or manually. The double-sided adhesive tape is preferably arranged on the side of the leg 63 which is oriented towards the frame 59. The elongated guide extensions 69 are pushed all the way into the U-shaped receptacles 71. As a result, the frame 59 is clamped between the leg 65 and the support 13 and the support 13 is held on the frame. A release of this clamping connection is prevented by the sawtooth-like surfaces 73,75, since these act as barbs to each other. The tab 77 has a bias which presses the surface 75 against the surface 73. Only when the tab 77 is raised against the bias, the clamp connection is released.

If the support 13 together with the second clamping part 17 fixed to the ground, the cable 37 can be tensioned by means of the cable tensioning device 11. For this purpose, it is necessary to insert the cable 37 into the recesses 33 of the clamping parts 21,23 and align the clamping parts 21,23 by means of the knobs 41 and recesses to each other. The internal thread 25 is guided through you through-hole 53 until it comes into contact with the external thread 43. The second clamping part 17 is rotated until the maximum clamping action and the desired tension acts on the cable 37. The second end of the rope 37 is also held by a rope tensioning device 11. It would also be conceivable, however, that the second end is held only by an angle. To additionally avoid pulling out the cable 37 from the first clamping part 15, it is conceivable that a button, a clamping screw o.ä. is provided.

In the FIGS. 11 to 14 the cable tensioning devices 11 are each shown arranged in front of a window. Out FIG. 12 It can be seen that the cable 37 also obliquely between two rope tensioning devices 11 can be aligned. FIGS. 13 and 14 show the possibility: a vertical arrangement of two ropes 37 in front of a window by means of four cable tensioning devices 11 for holding a plisse 93. The rope tensioning devices 11 are in the FIG. 13 by means of holding parts 61 and in FIG. 14 determined by holding parts 81. The pleat is clamped lengthwise on the ropes 37 or held for example by magnetic forces.

Legend:

11

Rope tensioner

13

Support

15

First clamping part

17

Second clamping part

19

longitudinal axis

21.23

clamping parts

24

section

25

external thread

27

wedge

29

Plane surfaces

31

groove

33

wells

34

Through opening on the first clamping part

35

Point-shaped elevations

37

rope

39

clamping gain

41

burl

43

inner thread

45.47

front sides

49

Circular paragraphs

51

handholds

53

Through opening on the support

55.57

Circular openings

59

window frame

61

L-shaped holding part

63.65

leg

66

barb

67

front

68

renewal

69

Elongated guide extensions

71

U-shaped shots

73,75

Sawtooth surfaces

77

flap

81

holding part

83.85

openings

87,89,91

hook

93,95,97

Rectangular openings

Claims (7)

1. Tension device (11) to tension a rope (37), which is used to hold a curtain, with

   - a first tension part (15),

   - a second tension part (17), said tension parts (15,17) working together by means of a threaded connection to enlarge or reduce the distance between the tension parts (15, 17) along their common longitudinal axis (19), and

   - a support (13), which is used as a counter support for the first or second tension part (15, 17) and by which the tension device (11) can be fixed to a substrate,

   characterised in that,
   the first tension part (15) consists of two symmetrical clamping parts (21,23), which possess a common cut edge (24) and
   on the first tension part (15) a through hole (34) is provided along the longitudinal axis (19), which is used to receive the rope (37) and which is formed such that a groove (33) is provided along the longitudinal axis (19) on each of the two tension parts (21, 23), the grooves (33) forming the through hole (34) in the assembled state.
2. Tension device (11) according to Claim 1, characterised in that the second tension part (17) is mounted rotatably around the longitudinal axis (19) on the support (13) and the first tension part (15) possesses an external thread (25), which works together with an internal thread (43) of the second tension part (17), the second tension part (17) being mounted on the support (13).
3. Tension device (11) according to any of Claims 1 or 2, characterised in that burls (41) and recesses are provided on the clamping parts (21,23) along their common cut edge (24), said burls and recesses aligning the clamping parts (21, 23) to each other in a positively locking manner.
4. Tension device (11) according to any of Claims 1 to 3, characterised in that the one end of the first tension part (15) has the shape of a wedge (27) and the wedge (27) is flattened on at least one side parallel to the longitudinal axis.
5. Tension device (11) according to Claim 4, characterised in that a through hole (53) is provided on the support (13), said opening possessing a negative shape of the wedge (27) so that the wedge (27) is guided in the through hole (53) and, with a relative displacement of the wedge (27) into the through hole (53) along the longitudinal axis (19), the two clamping parts (21, 23) are pressed against each other along the length of their cut edge (24).
6. Tension device (11) according to Claim 5, characterised in that the through hole (53) possesses the shape of a circle (55) on the face remote from the wedge (27), through which the first tension part (13) with its external thread (25) is passed.
7. Tension device (11) according to any of Claims 1 to 6, characterised in that the second tension part (17) possesses the shape of a circular cylinder, whose rotating axis is the longitudinal axis (19) and on whose end faces (45,47) there are circular shoulders (49), through whose midpoints the longitudinal axis (19) runs and which are used to rotatably mount the second tension part (17) to the support (13).

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