EP2915942A1 - Sliding element with tension spring - Google Patents

Abstract

The invention relates to a sliding part with at least one oriented in the direction of displacement guide and with at least one spring, against the force of the sliding part is displaceable over at least part of its sliding path, so that at least a part of the opposite displacement supported by spring force or is feasible, characterized in that the at least one spring is part of at least one spring pull with a rotatably mounted cable drum containing a spring element which can be unwound against the force of the spring, wherein a housing of the at least one spring pull on the push part and the end of the pull element or the rope spaced apart in the sliding direction in the region of the guide or the housing of the spring tension in the region of the guide and the end of the tension element or the rope are attached to the sliding part directly or indirectly.

Description

The invention relates to a sliding part with at least one oriented in the direction of displacement guide and with at least one spring, against the force of the sliding part is displaceable over at least part of its sliding path, so that at least a part of the opposite displacement supported by spring force or is feasible.

Such a sliding part in the form of a sliding door is for example from the DE 10 2011 000 295 A1 known.

For larger sliding paths, it may be necessary to disengage this spring during opening and set in stretched form due to the limited path of a coil spring provided, so that when closing the sliding door then an opposite coupling operation is required to perform the last closing again with spring force. Such an arrangement is difficult and expensive and, moreover, the spring-assisted sliding path is severely limited. In addition, for a satisfactory Function necessary that this tension spring has a relatively large spring force, so that their clamping when opening the door requires a corresponding amount of force of the user.

There is therefore the task of creating a sliding part of the type defined, in which the structure and the application of the spring force are structurally simplified, and an almost arbitrarily long sliding path can be supported when closing spring force.

This object is achieved by the invention specified in claim 1. Advantageous embodiments can be found in the dependent claims.

According to the invention, in a sliding part of the type defined, the at least one spring part at least one Federzugs with a rotatably mounted cable drum containing them with one of them unfoldable against the force of the spring tension element or rope, wherein a housing of the at least one Federzugs on the sliding part and the End of the tension element or the rope in the sliding direction spaced therefrom in the region of the guide or the housing of the spring tension in the region of the guide and the end of the tension element or the rope are attached to the sliding part directly or indirectly.

In particular, the present invention is suitable for sliding doors, eg sliding doors for closing an opening on or in a building, furniture or the like. In this case, the housing of the at least one Federzugs in the guide or on the immovable support of the sliding door is attached, wherein that the tension element or rope on the sliding door itself, especially on a narrow side, preferably on the upper narrow side of the Sliding door attacks.

In one embodiment, the cable drum has on its outer side at least one helically arranged recess or groove for receiving the rope. The rope can be made of steel or plastic.

For a uniform as possible train of the spring, the cable drum of the at least one Federzugs in one embodiment from the end of the cable reel to the side of the last when pulling out the rope last unwound cable part increasing diameter, so that when moving the sliding part first, the smaller and then further Pulling out the rope of ever larger diameter of the cable drum is effective, and that when pulling back the rope by the force of the tensioned spring of Federzugs the rope is first wound on the large diameter of the cable drum and further retraction by spring force to an ever smaller diameter of the cable drum , wherein the axis of rotation of the cable drum is arranged transversely to the direction of movement and in particular in the plane of the sliding movement and / or transversely to the orientation of the guide of the sliding part and / or its narrow side.

It is advantageous that when closing the sliding door, the rope is first wound on the large diameter with, while at the same time the largest spring force is effective because in this position, the spring is stretched the strongest. The lever arm on the cable drum is correspondingly large.

In a further embodiment of the sliding part corresponds to the extension length of the rope connected to it of at least one Federzugs more than half of the largest possible Sliding distance or the total length of the sliding path of the sliding part. This makes it possible, when closing the sliding door over the entire way to have support by the spring force or even to have an automatic closing movement.

Preferably, the movement of the rope outside the housing of the Federzugs in the direction of displacement of the sliding part is free of deflection.

In one embodiment, a buffer or damper is provided as a stop for the sliding part or for the closing position of the sliding part in an arrangement of the spring tension for a spring-actuated closing movement, wherein the sliding movement is collected during closing and / or slowed down or a gentle closing is effected.

For the open position, a holder may be provided which acts against the retraction force of the spring. For example, a magnet may be provided to keep the door open, or it may be provided a catch which can be unlocked by a displacement of the door in the opening direction. Another possibility is that a resilient constriction of the sliding guide is provided, which engages behind the opening of the sliding door provided at this projection and in turn gives in closing the sliding door with additional thrust in addition to the spring force. A clamping position can also serve to keep the door open. Alternatively it can be provided in particular a manually operable closure. Thus, the sliding part is anchored in the open position, whereby a user has both hands free when accessing a shared by the sliding door space.

In an expedient embodiment, a hook-like projection is arranged or attached to the sliding part, the hook opening in that sliding direction, in which the cable against the force of the spring of the cable from the housing is pulled out, and that on the rope or the cable end a projection or Hook or an eyelet or loop is provided for hanging in the hook-like projection. In this case, the hook-like projection of two adjacent and / or mutually parallel spaced, especially matching hook pieces may be formed. At the end of the pull rope can be arranged as a projection for hanging a T-piece whose length is transverse to the rope greater than the distance of the two hook pieces, so that the attacking on the tee rope between the hook pieces passes through them away , Below the hook opening, a bevel may be provided as a guide for the T-piece or coupling piece of the rope into the hook opening, and / or as height compensation, in particular to compensate for different distances between the guide and the top of the sliding part. In the displacement path of the hook-like projection, a displaceable counter hook can be provided, which also has two parallel hook pieces with a relation to the hook-like projection on the sliding part deviating distance, so that when moving the sliding part and its hook-like projection relative to the counter hook the coupling piece or the T- Piece on the rope of the spring pull on the fixed counter hook gets stuck.

The hook connected to the guide rail is advantageous for the assembly. When disassembling the hook can be moved back in the sliding direction and thus the rope to be fixed in the extended position to then hang the sliding part well.

In one embodiment, the sliding part comprises a sliding or center door sliding on two opposite sides, wherein two spaced oppositely acting spring trains are each arranged with fixed hooks in the region of the guide and the sliding or center door in turn has two hook-like projections and optionally with the rope of a Federzugs or with the rope of the other Federzugs in their displacement in one or the other direction can be coupled. The two hook-like, each one end of the ropes holding projections and the one or more hook-like projections are spaced on the sliding part relative to each other such that the sliding part when moving in one direction mitnehmbar and the other rope is fixed in a starting position and vice versa. The two cables are attached to the sliding part or the sliding door, after opening the sliding doors to one side the one rope and after opening in the opposite direction the other rope is pulled out against the spring force of the spring tension and in the middle position both ropes equidistant from their cable drums in particular Protruding effect of the respective coil spring.

In one embodiment, the spring is formed by a spiral spring, the bias of which is adjustable by turning a connected to the coil spring axis of rotation, wherein the axis of rotation can be locked in the direction of rotation, and the latching by rotation of the axis of rotation is releasable, wherein the latching is formed in that a greater force or a greater torque is required for releasing the catch in the one direction of rotation which corresponds to a relaxation of the torsion spring, than in the opposite direction of rotation, which corresponds to a tensioning of the spiral spring.

In this embodiment, it is possible to adapt the bias of the Federzugs to the needs, so to increase or decrease. At the same time it is considered that in the idle state, the spring force of the coil spring already acts on the latching, namely in the direction of rotation, in which the axis of rotation must be rotated to relax the spring. The latching is designed so that in addition to or against the existing spring force applied to release the locking in both directions is substantially the same. This can be achieved in that a locking device is provided which has one or more projections, which must be overcome by a counterpart upon rotation of the axis of rotation. The counterpart must overcome depending on the direction of rotation different steep flanks on the projections. In particular, the flanks, which are directed in the direction of rotation to relax, are steeper than the flanks directed in the opposite direction. This embodiment has the further advantage that a release triggered by the spring force of the coil spring releasing the locking and turning back the rotation axis is prevented.

A sliding part according to the described embodiments is particularly suitable for the realization of sliding doors for furniture, such as cabinets. The sliding part may also be provided on buildings or within living spaces.

• Die Figuren 1 bis 6 einen Federzug für ein Schiebeteil gemäß Ausgestaltungen der Erfindung,
• Die Figuren 7 und 8 ein Schiebeteil gemäß einer ersten Ausgestaltung der Erfindung,
• Die Figuren 9 bis 11 verschiedene Zustände bei einer Bedienung des Schiebeteils gemäß der ersten Ausgestaltung,
• Die Figur 12 ein Schiebeteil gemäß einer zweiten Ausgestaltung der Erfindung, und
• Die Figuren 13 bis 15 verschiedene Zustände bei einer Bedienung des Schiebeteils gemäß der zweiten Ausgestaltung.

Hereinafter, embodiments of the invention are described in more detail with reference to the drawings. In a schematic representation:

• The FIGS. 1 to 6 a spring train for a sliding part according to embodiments of the invention,
• The FIGS. 7 and 8 a sliding part according to a first embodiment of the invention,
• The FIGS. 9 to 11 various states in an operation of the sliding part according to the first embodiment,
• The FIG. 12 a sliding part according to a second embodiment of the invention, and
• The FIGS. 13 to 15 various states in an operation of the sliding part according to the second embodiment.

The Figures 1 and 2 show schematically different views of a spring train 1 for a sliding part according to an embodiment of the present invention. The spring train 1 comprises a cable drum 2 with a developable tension element or rope 3. One of the free ends 4 of the cable 3 is attached to a located on the outer periphery of the cable drum 2 position on the cable drum 2. For this purpose, the cable drum 2 has a recess which opens into a comparatively smaller cross-section groove 5 on the circumference of the cable drum 2, so that the cable end 4 by means of a thickening, which is insertable into the recess and has a larger cross-section than the groove 5 , is fixable relative to the cable drum 2.

The groove 5 runs spirally along the outer circumference of the cable drum 2. When a tensile load on the cable 3, this winds from the cable drum 2, wherein the cable drum rotates about a rotational axis 7 against a spring force of a spiral spring 6 located inside the cable drum 2.

The cable drum 2 has a diameter decreasing from one axial end to the opposite axial end. In other words, the cable drum 2 has a decreasing from the one end of the groove 5 at the end of the cable 4 toward the other end of the groove 5 diameter. Thus, when unwinding the rope 3, first the smaller and then further pulling out of the rope the ever larger diameter of the cable drum 2. Conversely, when pulling back the rope 3 by the force of the tensioned coil spring 6, the rope 3 first on the large diameter of the cable drum. 2 and wound up on an ever smaller diameter of the cable drum 2 during further retraction by spring force.

As in the FIGS. 3 to 6 illustrated, the cable drum 2 is arranged in a housing 8. As in the FIGS. 7 and 8 shown, the housing 8 is arranged and fixed to a sliding guide 10 for a sliding part 9. The cable end 4 opposite end of the cable 3 is releasably anchored to a cable holder 11. The cable holder 11 is formed by two matching, side by side and mutually parallel hook pieces 12 having a predetermined distance from each other. At the end of the rope 3 as a projection for hanging a T-piece 13 is arranged, whose length is transverse to the cable 3 is greater than the distance between the two hook pieces 12, so that the T-piece 13, the hook pieces 12 can engage behind and on the T-piece 13 attacking rope 3 passes between the hook pieces 12 therethrough.

In the FIGS. 9 to 11 the operation of the sliding part 9 is shown. The FIG. 10 shows the (closed) rest state, wherein the sliding part 9 is moved by the cable 3 and the force acting on the cable 3 spring force to a stop. If the sliding part 9 through a sliding door formed a cabinet, this condition corresponds to a closed sliding door. To open the sliding part 9 this is moved against the force acting on the cable 3 spring force (in the drawing orientation to the left), as in FIG. 11 shown.

As in FIG. 9 shown is still a counter hook 14 provided on a sliding guide carriage 15. The counter hook 14 is likewise formed by two parallel hook pieces, wherein the spacing of these hook pieces deviates from the spacing of the hook pieces 12. When moving the counter hook 14 from a first position, in which the counter hook 14 is arranged in the direction of displacement between the cable drum 2 and the hook pieces 12, in a second position in which the counter hook relative to the cable drum 2 is arranged beyond the hook pieces, moves the counter-hook 13 past the hook pieces 12 and thereby takes the T-piece 13 with. The first position is in FIG. 11 and the second position in FIG. 9 shown. The counter hook 14 on the guide carriage 15 therefore has the function of a driver, with the aid of the pull rope can be released from the cable holder 11 and posted from this. In this state, a simple assembly or disassembly of the sliding part 9 is possible.

Furthermore, a damper 16 is arranged between the cable holder 11 and the housing 8, which serves as a stop for the sliding part 9 and dampens the sliding movement at least shortly before the stop.

The FIG. 12 shows a second embodiment of the present invention, in which the sliding part is formed by a movable in two opposite directions center door 17. In this embodiment, on the guide 10th first and second oppositely acting spring trains 18 and 19 are provided with first and second cables 20, 21, the ends of which by means of first and second T-pieces 22, 23 to first and second cable holders 26, 27 are anchored. The cable holders 26 and 27 are mounted on the upper narrow side of the center door 17.

Referring to the FIGS. 13 to 15 In addition, first and second fixed counter hooks 24, 25 are provided on the guide 10. These serve for coupling and releasing the T-pieces 22, 23 to or from the cable holders 26, 27th

In the idle state, the center door 17 is located in the middle between the spring trains 18 and 19, ie the ropes 20 and 21 are extended substantially the same distance. The idle state is in FIG. 13 shown.

If the center door 17 is moved in the direction of the first spring train 18 ( FIG. 14 ), the first counter hook 24 engages behind the first T piece 22 and releases it from the first cable holder 26, which moves with the center door 17 further in the direction of the first spring pull 18. The same happens analogously with a displacement of the center door 17 in the opposite direction, as in FIG. 15 shown.

In the delivery state, the coil spring 6 of the spring train 1 to a predetermined bias, wherein the coil spring 6 is held relative to the housing 8 in the prestressed state. As in the FIGS. 2 to 6 For this purpose, on one side of the spring cable 1, a locking disk 28, which is connected in a rotationally fixed manner to the axis of rotation 7, is provided with a plurality of projections 29, the projections 29 being cut into corresponding recesses in an opposite, complementarily shaped inner side 30 of an outer wall 31 of the housing 8 intervention.

To adjust the bias, the axis of rotation 7 is rotated, wherein the projections of the locking disc 28 are pushed over the projections formed between the recesses on the inner side 30 of the outer wall 31 to engage in each of the adjacent in the direction of rotation recesses, wherein the outer wall 31 relative to Rotary axis deformed axially outwards. To facilitate this operation, the projections 29 each have along their radial longitudinal extent on both sides first and second flanks 32, 33, wherein the first flanks 32 are steeper than the second flanks 33, whereby the projections 29 in cross section in the form of an asymmetric Have trapezes. In this case, the flatter flanks 33 in the direction corresponding to the direction of rotation for tensioning the coil spring 6, while the steeper edges 32 point in the opposite direction, which corresponds to the direction of rotation to relax the coil spring 6. Thus, the configuration of the flanks 32, 33 takes into account the respectively supporting in the direction of rotation supporting or inhibiting force of the coil spring. 6

The rotation of the axis of rotation 7 for clamping or relaxing the coil spring 6 can be effected by means of a hexagonal wrench, which can be inserted into a corresponding bore 34 in the axis of rotation 7.

The adjustment provided in this way is limited by means of a radially arranged nose 35 and a rotation of the axis of rotation 7 in their path stop 36. In other words, the axis of rotation 7, starting from the in Fig. 6 shown initial state, be rotated in both directions about only one half turn.

LIST OF REFERENCE NUMBERS

1

Federzug

2

cable drum

3

rope

4

Attaching the rope to the cable drum

5

groove

6

spiral spring

7

axis of rotation

8th

casing

9

sliding part

10

guide

11

cable holder

12

hook pieces

13

Tee

14

counter hook

15

guide carriage

16

damper

17

central door

18

First spring train

19

Second spring tension

20

First rope

21

Second rope

22

First tee

23

Second tee

24

First counter hook

25

Second counter hook

26

First rope holder

27

Second rope holder

28

locking disc

29

projections

30

inside

31

outer wall

32

steep flanks

33

flat flanks

34

Hexagonal bore

35

nose

36

attack

Claims (15)

Sliding part (9) with at least one oriented in the direction of displacement guide (10) and with at least one spring (6), against the force of the sliding part (9) over at least part of its sliding path is displaceable, so that at least a portion of the opposite displacement Spring force is supported or feasible, characterized in that the at least one spring (6) part of at least one Federzugs (1) containing a rotatably mounted cable drum (2) with one thereof against the force of the spring (6) unwindable tension element or rope (3), wherein a housing (8) of the at least one spring pull (1) on the sliding part (9) and the end of the tension element or the cable (3) in the sliding direction to spaced in the region of the guide (10) or the housing ( 8) of the spring tension (1) in the region of the guide (10) and the end of the tension element or the rope (3) on the sliding part (9) are attached directly or indirectly. Sliding part (9) according to claim 1, characterized in that it is a sliding door for closing an opening on or in a building, furniture or the like, that the housing (8) of the at least one spring tension (1) in the region of the guide (10). or is attached to the immovable support of the sliding door and that the tension element or rope (3) on the sliding door itself, in particular on a narrow side, preferably engages the upper narrow side of the sliding door. Sliding part (9) according to claim 1 or 2, characterized in that the cable drum (2) on its Outside at least one helically arranged recess or groove (5) for receiving the rope (3), and / or that the cable drum (2) of the at least one Federzugs (1) one from the end of the cable reel to the side of the pulling out of the rope (3) last unwinding cable part has increasing diameter, so that when moving the sliding part (9) first the smaller and then further pulling out of the rope (3) the ever larger diameter of the cable drum (2) is effective, and that upon retraction of the rope (3) by the force of the tensioned spring (6) of the spring tensioner (1), the cable (3) first to the large diameter of the cable drum (2) and further retraction by spring force to an ever smaller diameter of the cable drum (2) can be wound , wherein the axis of rotation of the cable drum (2) transversely to the direction of movement and in particular in the plane of the sliding movement and / or transversely to the orientation of the guide of the sliding part s (9) and / or its narrow side is arranged. Sliding part (9) according to one of claims 1 to 3, characterized in that the extension length of the rope (3) connected to it of the at least one Federzugs (1) more than half of the maximum sliding path or the total length of the sliding path of the sliding part (9) equivalent. Sliding part (9) according to one of claims 1 to 4, characterized in that the movement of the cable (3) outside the housing (8) of the spring tension (1) is free of deflection in the direction of displacement of the sliding part. Sliding part (9) according to one of claims 1 to 5, characterized in that for the closed position of the sliding part (9) in an arrangement of the spring tension (1) for a spring-actuated closing movement, a buffer or damper (16) as a stop for the sliding part (9) or it is intended that the sliding movement is caught when closing and / or slowed or a gentle closing is effected. Sliding part (9) according to one of claims 1 to 6, characterized in that, for the position of the sliding part (9), in which the spring (6) of the at least one spring pull (1) is tensioned, one of the retraction force of the spring (6) counteracting holder, for example, a detent, a magnet, a clamp and / or a particular manually operable closure is provided. Sliding part (9) according to one of claims 1 to 7, characterized in that on the sliding part (9) a hook-like projection is arranged or attached, the hook opening in the sliding direction, in which the cable (3) against the force of the spring ( 6) of the cable from the housing (8) is extendable, and in that on the cable (3) or the cable end a projection or hook or eyelet or loop is provided for hooking in the hook-like projection, wherein the hook-like projection in particular of two side by side and / or arranged parallel spaced apart, in particular matching hook pieces (12) and at the end of the pull rope (3) as a projection for hanging a T-piece (13) is arranged, whose length transverse to the rope greater than the distance of both hook pieces (12), such that the rope (3) acting on the T-piece (13) runs away from the hook pieces (12). Sliding part (9) according to one of claims 1 to 8, characterized in that below the hook opening a bevel is provided as a guide for the T-piece (13) or coupling piece of the rope (3) into the hook opening, and / or as height compensation , In particular to compensate for different distances between the guide (10) and the top of the sliding part (9). Sliding part (9) according to one of claims 1 to 9, characterized in that in the displacement of the hook-like projection a displaceable counter hook (14) is provided, which also has two parallel hook pieces with a relative to the hook-like projection on the sliding part (9) deviating distance , and that when moving the sliding part (9) and its hook-like projection relative to the counter-hook (14), the coupling piece or the T-piece (13) on the cable (3) of the spring tension (1) on the counter hook (14) hangs. Sliding part (9) according to one of claims 1 to 10, characterized in that it is displaceable on two opposite sides sliding or center door (17) and two spaced oppositely acting spring trains (18, 19) each with fixed counter hooks (24, 25 ) are arranged in the region of the guide (10) and the sliding or center door (17) in turn has two hook-like projections and optionally with the cable (20) of a spring tension (18) or with the rope (21) of the other Federzugs (19) is coupled in their displacement in one or the other direction. Sliding part (9) according to one of Claims 1 to 11, characterized in that the two hook-like projections, each one end of one of the cables (20, 21), and the hook-like projection (s) on the sliding part (9) are spaced relative to one another in that, when displaced in one direction, the sliding part (9) can be entrained and the other cable (20, 21) can be fixed in a starting position and vice versa. Sliding part (9) according to one of the preceding claims, characterized in that the two ropes (20, 21) are fastened to the sliding part (9) or the center door (17) and that after opening the sliding part (9) or the center door (17 ) to one side of a rope (20) and after opening in the opposite direction the other cable (21) against the spring force of the respective spring tension (18, 19) is pulled out and in the middle position both ropes (20, 21) equidistant from their cable drums in particular protrude under the effect of the respective clock spring. Sliding part (9) according to one of the preceding claims, characterized in that the spring (6) is formed by a spiral spring whose pretension can be adjusted in the rest state by turning a rotation axis (7) connected to the spiral spring, wherein the rotation axis (7) in Can be locked in the direction of rotation, and the latching by rotation of the rotation axis (7) is releasable, wherein the latch is formed such that the Loosening the latch in the one direction of rotation corresponding to a relaxation of the torsion spring, a greater force or torque is required, as in the opposite direction of rotation, which corresponds to a tensioning of the coil spring. Sliding part (9) according to claim 14, characterized in that a latching device (28) is provided, with at least one projection (29) which must be overcome by a counterpart upon rotation of the axis of rotation (7) for tensioning or relaxing the coil spring, wherein in the direction of rotation of the axis of rotation (7) opposite flanks of the projection (29) are different steep, in particular that edge (32) facing in that direction in which the axis of rotation (7) is rotatable to relax the coil spring is steeper, as the flank (33) pointing in the opposite direction of rotation.

Images