EP2744963B1 - Device for retracting a movable furniture part into a central position - Google Patents

Description

The invention relates to a device for pulling a movable furniture part, in particular a sliding door, into a central position.

In the furniture sector, pull-in devices are used in numerous variants, for example to draw drawers or furniture doors automatically into a closed position from a predetermined position. In the case of furniture with sliding doors, it is partially provided that a sliding door can be opened in two different, usually opposite directions, starting from a closed position. In such a case, the closed position is also referred to as the middle position. If, for example, more than two sliding doors are provided for closing a furniture opening, such a possibility of movement is advantageous in the case of the inner sliding door or doors.

To enable automatic retraction into a middle position, damped from two directions, is from the publication DE 20 2010 007 230 U1 a bidirectional feeding device is known, in which two counter-acting unidirectional feeding devices cooperate with a longitudinally and tiltably guided coupling slide. When the sliding door is moved out of the middle position, the coupling carriage is moved in the respective opening direction via corresponding driver projections on the sliding door and, depending on the direction of movement, interacts with one of the two unidirectional pull-in devices. The movement in the opening direction tensions a pull-in spring of the respective pull-in device to a point at which a driver of the pull-in device, on which the coupling slide engages, tilts into a locking position. The coupling from the coupling carriage to the feed device is also released. With a further movement of the door in the respective opening direction, the coupling element also moves away from the driver projection of the sliding door due to an inclined guidance within the pull-in device and is thereby decoupled from the sliding door. The door can now be moved freely. When the door closes back in the direction of the central position, the sliding door with the second driver projection hits the corresponding coupling element of the coupling carriage and thereby takes it along in the closing direction. The coupling slide engages in the locked driver of the tensioned pull-in device and releases its locking. The The pull-in device is triggered and the coupling slide is pulled into the middle position in a damped manner using a damping element via the pull-in spring. When the sliding door is moved out of the middle position in the opposite direction, the same process takes place in mirror image using the corresponding other unidirectional feed device.

A disadvantage of the bidirectional feed device described is the use of two separate unidirectional feed devices. The use of two separate pull-in devices is cost-intensive, inter alia, because of the mechanically complex separate locking mechanism and due to damping elements that may be used.

From the publication DE 10 2008 009 046 A 12, a self-closing device with damping for a sliding door is known. The damped self-closing takes place in two spaced, different end positions of the sliding door. For this purpose, self-retracting devices with two drivers are provided, movements of the drivers being damped outwards by a common damper.

It is an object of the present invention to provide a device for pulling a movable furniture part into a central position on both sides, in which the use of separate unidirectional pull-in devices can be dispensed with.

This object is achieved by a feed device with the features of claim 1.

A device according to the invention of the type mentioned at the outset has a driver which is displaceably guided laterally in a housing of the device and a center slide which is coupled to it and laterally displaceably guided. The device also has two laterally displaceable side slides, which are spaced apart from one another in a displacement direction, the side slides being coupled to one another via an energy storage arrangement, by means of which a force to be exerted on one another is exerted on the side slides. For each of the side slides there is a control slide, by means of which, when the middle slider moves out of the middle position, that of the side slides in the direction of which the middle sled moves, is coupled to the center carriage, whereas the other of the side carriages is fixed to the housing.

Depending on the direction of displacement of the center slide and thus the driver and ultimately the movable furniture part, the control slide enables the center slide to be coupled to one of the two side carriages. The other side slide, however, is attached to the housing. This increases the distance between the two side slides from each other when the furniture part moves from the central position, regardless of the direction of movement. The energy storage arrangement arranged between the side slides is thus effective in each of the directions of movement. Consequently, the feed device according to the invention can be implemented with only one energy storage arrangement.

The side slides are also coupled to one another by a damping device, by means of which movement of the side slides is damped toward one another. In this way, a damping function during automatic retraction is additionally provided, this also being achieved with only one damping device. The damping device has at least one cylinder and at least one piston rod, the at least one cylinder being connected to one of the side slides and the at least one piston rod being connected to the other of the side slides.

The control slides are each guided in a control slide guide slot of the side slides in a direction transverse to the direction of displacement x and each have a coupling pin with which they engage in a coupling slit of the center slide to couple the center slide with the respective side slide. They also each have a guide pin with which they each engage in a control path of the housing. In this way, the movement of the control slide can be coupled to the position of the side slides in a simple and reliable manner, which requires reliable control of the coupling between the center slide and the side slides.

The coupling slot has at least one section that extends obliquely to the direction of displacement. This contributes to a smooth, non-choppy actuation of the control slide.

According to a further advantageous embodiment of the device, the driver is fixed to the housing in one of two outer opening positions spaced apart from the central position. By fixing the driver on the housing, the middle slide and the respective side slide moved together can be fixed, so that the arrangement can remain in the open position until a pull-in process for the middle position is triggered.

According to a further advantageous embodiment of the device, the driver has two lateral claws which are designed to grip an activator of a door fitting. The driver in is particularly preferred Guided tracks of the housing, wherein at least one guide track is angled in an outer region, such that the activator enclosed by the driver in the central position is released when the driver is in one of two open positions in the outer region of the guide path. In this way, a simple coupling of the device to the movable furniture part, for example a sliding door, is achieved. Only an activator needs to be attached to the furniture part, via which the furniture part couples between the central position and the open positions with the retraction device.

According to a further advantageous embodiment of the device, the claws are pivotably articulated on a central part of the driver and are guided in the angled guideway with a guide pin, one of the claws being pivoted relative to the central part of the driver in one of the opening positions. This configuration offers a defined coupling and decoupling of the activator from the driver.

Further advantageous refinements and developments are the subject of the dependent claims.

Fig. 1A

eine schematische Draufsicht auf eine Einzugsvorrichtung mit einem geöffneten Gehäuse in einer Mittelstellung,

Fig. 1B

die Einzugsvorrichtung wie in Fig. 1A mit teilweise sichtbaren verdeckten Linien,

Fig. 2A

die Einzugsvorrichtung der Fig. 1A in einer ersten Öffnungsstellung,

Fig. 2B

die Einzugsvorrichtung wie in Fig. 2A mit teilweise sichtbaren verdeckten Linien,

Fig. 3A

die Einzugsvorrichtung der Fig. 1A in einer zweiten Öffnungsstellung,

Fig. 3B

die Einzugsvorrichtung wie in Fig. 3A mit teilweise sichtbaren verdeckten Linien,

Fig. 4

die Einzugsvorrichtung der Fig. 1A in einem Zwischenschritt ihrer Montage,

Fig. 5

die Einzugsvorrichtung der Fig. 1A in einem weiteren Zwischenschritt ihrer Montage und

Fig. 6A bis 6C

Jeweils eine schematische Draufsicht auf eine Einzugsvorrichtung mit geöffnetem Gehäuse in einem weiteren Ausführungsbeispiel in verschiedenen Stellungen.

Exemplary embodiments of the invention are explained in more detail below with reference to figures. Show it:

Fig. 1A

1 shows a schematic top view of a feed device with an open housing in a central position,

Figure 1B

the feed device as in Fig. 1A with partially visible hidden lines,

Figure 2A

the feeder of the Fig. 1A in a first opening position,

Figure 2B

the feed device as in Figure 2A with partially visible hidden lines,

Figure 3A

the feeder of the Fig. 1A in a second open position,

Figure 3B

the feed device as in Figure 3A with partially visible hidden lines,

Fig. 4

the feeder of the Fig. 1A in an intermediate step of their assembly,

Fig. 5

the feeder of the Fig. 1A in a further intermediate step of their assembly and

6A to 6C

In each case, a schematic top view of a feed device with an open housing in a further exemplary embodiment in different positions.

In the figures described in more detail below, exemplary embodiments of a drawing-in device according to the invention are shown in different operating positions and views. In all figures, the same reference symbols designate the same elements. For reasons of clarity, however, not every element is provided with a reference symbol in all figures.

The Figures 1 to 3 reproduce the feed device in different positions, hidden lines not being visible in the respective FIG. A, whereas hidden lines are partially visible as dashed lines in the associated FIG. The Figures 4 and 5 correspond to the view in the position of the Fig. 1A , where in the Figures 4 and 5 various elements of the feed device are not used in order to be able to better recognize the elements underneath. In this sense, the Figures 4 and 5 the retraction device in intermediate steps of its assembly. In addition, an upper housing cover of the retraction device is omitted in all figures, in order to be able to gain insight into its structure.

In the following description of the figures, terms such as top, bottom, left, right, front, rear, etc. refer exclusively to the exemplary representation selected in the figures. These terms are not to be understood as restrictive and should be interpreted in the context of the respective figure.

In the figures, a pull-in device 1 is shown in interaction with a door fitting 2 (cf. Fig. 1 ). The feed device 1 is also referred to as device 1 in the following. The door fitting 2 is direct or indirect fixed to a movable sliding door, not shown here, for example in the fastening dowel 3 in corresponding bores of the sliding door or the running part of the sliding door. The door fitting 2 has a pin-like activator 4 at its lower end, which interacts with the pull-in device 1. In relation to the representation level of the figures, the sliding door is mounted to be movable to the right and left. Corresponding guide rails for the sliding door are also not shown here. The sliding direction of the sliding door is also referred to below as the x direction, a movement to the right meaning a movement to positive x values and a movement to the left meaning a movement to negative x values. When the door fitting 2 is also moved, the device 1 is mounted directly or indirectly in a stationary manner, for example on a furniture body, a guide rail arranged on the body side or an end stop arranged on the body side. It is pointed out that, conversely, an activator can also be arranged in a stationary manner on the furniture body and the device 1 can be attached to the sliding door so that it moves laterally with it. In this way, the same functionality is achieved as in the device 1 assumed to be stationary in the example shown here.

The device 1 has a housing 10, of which only one lower housing shell is shown in the present case. Like an upper housing shell (not shown), this is preferably produced in one piece, for example in a plastic injection molding process. For reinforcement, 10 webs 17 (cf. Fig. 4 ) be arranged, which also serve to protect against dust and sight. The device 1 has a driver 20 which partially protrudes from the housing 10 and with which the activator 4 of the door fitting 2 interacts. The driver has a middle piece 21 and lateral claws 22, 23 hinged to this middle piece 21. A straight guide path 11 is formed in the housing 10, along which the middle piece 21 and thus the driver 20 can move laterally. In the case shown, the middle piece 21 engages with two guide pins in the straight guide track 11. The guide pins also simultaneously form an axis of rotation for the articulated claws 22, 23. At a distance from the articulation points, a further guide pin is inserted into each of the claws 22, 23, which cooperates with a guide track 12 of the housing 10 that is angled at its ends and straight in the central region . Of course, the driver 20 can also be designed differently than shown in the figures. For example, the guide pins can be designed in a different shape, number and / or position on the driver 20. The claws 22 and 23 enclose in the in the Figure 1 shown center position the activator 4 of the Door fittings. When the driver 20 moves laterally, the shape of the mouth formed in this way and enclosing the activator 4 does not initially change. Only when the guide pin of the claws 22 or 23 slides into the angled area of the guideway 12 does the corresponding claw 22, 23 tilt to the side and open the mouth to such an extent that the activator 4 is released in the respective direction. This is in the 2A and 2B for a movement to the right and in the 3A and 3B recognizable for a movement to the left.

Furthermore, the device 1 has three slides which are also guided laterally, a center slide 30, a left side slide 40 and a right side slide 50. For the lateral guidance of the three slides 30, 40, 50 mentioned, a straight slideway 13 is embodied in the housing 10. A central housing dome 14 is also used for guidance purposes and also serves to accommodate screws for connecting the housing halves of the housing 10.

The slides 30, 40, 50 are arranged in different parallel planes to one another. The side slides 40, 50 lie directly on the lower housing shell and are guided in the slide guide path 13. The side slides 40, 50 are thus arranged within a first level. This is good in Fig. 4 to see, which shows a view of the device 1 with the center slide 30 removed. The middle slide 30 is arranged partially overlapping on the side slide 40, 50 in a second plane. The center slide 30 is guided with a guide slot 31 through the housing dome 14 and with contours 32 on correspondingly designed contours 41, 51 of the side slides 40 and 50, respectively. A further guidance of the slides 30, 40, 50 in the lateral direction can be achieved by appropriate guideways of the upper one Housing shell take place.

The lateral movement of the center slide 30 is coupled to that of the catch 20 by means of a left or right locking slot 33 or 34, which are arranged in the upper part of the center slide 30 in the figures and on whose outer side walls the guide pins of the catch 20 rest . As the 2A, 2B and 3A, 3B show, the guide pins at the end of the lateral movement of the driver 20 as they move into the angled part of the guideway 12 into the lower part of the locking slots 33, 34, whereby the driver 20 and the central slide 30 are fixed in their lateral movement on the housing 10. After the activator 4 has been released, the driver 20 and the center slide 30 remain in the position shown in FIG 2A, 2B and 3A, 3B shown left or right opening position. It is only when the open claw 22 or 23 is raised again along the angled guideway 12 and the mouth of the catch 20 is closed when the activator 4 moves back, that the catch 20 and the center slide 30 on the housing 10 are also released.

The side slides 40, 50 have control slide guide slots 42 and 52, which run perpendicular to the lateral displacement direction x and in which a control slide 400 and 500 can move back and forth in the y direction (cf. in particular Fig. 4 ). The control slides 400, 500 serve to couple the center slide 30 to the left side slide 40 and the right side slide 50. For this purpose, the control slides 400, 500 each have a coupling pin 401 or protruding from the image plane of the figures in the direction of the center slide 30. 501 on. Depending on the position of the respective control spool 400, 500 in the y-direction, these coupling pins 401, 501 interact with a respective coupling slot 35 and 36, respectively, in the left and right area of the center spool 30. These move the control spools 400, 500 furthermore has a guide pin 402 or 502 facing the lower housing shell of the housing 10. This is in each case guided in a left or right control track 15, 16 embodied in the housing 10. The control tracks 15, 16 are each angled in their section pointing towards the center of the device 1. In this way, on the one hand, the lateral movement of the side slides 40, 50 towards the center is limited. On the other hand, the respective control slide 400, 500 is pushed downward, ie away from the driver 20 in the negative y direction, when the respective side slide 40, 50 is in its inner stop position, ie on the left stop on the right side slide 50 or on the right Stop at the left sideshift 40. Since the coupling slots 35, 36 of the center slide 30 are open towards the bottom, ie pointing away from the driver 20, a control slide 400 or 500 pushed towards the driver 20 leads to a coupling of the center slide 30 to the left or right side slide 40 or 50, and a control slide 400, 500 pushed away from the driver 20 to release the coupling from the center slide 30 to the respective side slide 40 or 50.

When the sliding door moves out of the Fig. 1 In the middle position shown to the right, the left side slide 40 is thus fixed at its right, inner stop position on the housing 10 by a control slide 400 pushed down in the negative y-direction and decoupled from the center slide 30. Moving the control spool 400 in the angled area of the Control path 15 is supported by an inclined upper portion 37b of the locking slot 35. The right-hand side slide 50, on the other hand, is coupled to the center slide 30 by a right control slide 500 which is pushed up into the coupling slot 36 in the positive y direction and moves to the right with this, as in FIG Fig. 2 evident. The insertion of the control slide 500 into the locking slot 36 is supported by an obliquely running lower section 38a of the locking slot 36. In the right stop position, which is also referred to as the opening position, the mouth of the driver 20 then opens by moving the right claw 23 when the corresponding guide pin is immersed in the angled region of the guide track 12.

Like from the 3A and 3B can be seen is when moving the activator 4 from the in 1A and 1B In the middle position shown to the left in mirror image, the right side slide 50 is fixed at its left stop position and decoupled from the center slide 30, whereas the left side slide 40 is moved to the left by a control slide 400 pushed up to the center slide 30 until the left claw 22 is guided through the angled guideway 12 opens the mouth of the driver 20 and at the same time fixes the driver 20 and thus the center slide 30 and the left side slide 40 in the left end position shown. The displacement of the control slide 500 into the angled region of the control track 16 is supported by an obliquely running upper section 38b of the locking slot 36. The insertion of the control slide 400 into the locking slot 35 is supported by an obliquely running lower section 37a of the locking slot 35.

The side slides 40, 50 are therefore at a minimum distance from one another when the driver 20 and thus the sliding door are in the middle position (cf. Fig. 1 , 4th ). When the sliding door or the driver 20 moves out of this middle position, the distance between the two side slides 40 and 50 increases, regardless of which of the opening directions this movement takes place.

The side slides 40, 50 are now coupled to one another on the one hand via a damping device 60 and on the other hand via a mechanical energy storage arrangement 70. For this purpose, the side slides 40, 50 have receptacles 43 and 53 in their respective inner areas for receiving the ends of the damping device 60. The damping device 60 has at least one cylinder 62 and a piston rod 61 (cf. Fig. 5 ), whereby one of the receptacles, here, for example, the receptacle 43 of the left side slide 40 is designed to engage with a head of the piston rod 61 and the other of the receptacles, here, for example, the receptacle 53 of the right side slide 50, is designed for the cylinder 62 to connect the damping device 60 to the corresponding side slide 50. The damping device 60 is designed in a known manner in such a way that the piston rod 61 can be pulled out of the cylinder 62 with as little force as possible, whereas the piston rod 61 is pressed into the cylinder 62 in a damped manner. For the movement of the sliding door, this means that a movement of the door out of the middle position occurs undamped regardless of the direction of movement, whereas a movement into the middle position is damped. Of course, it is also conceivable to carry out both movements in a damped manner, possibly to a different degree.

Furthermore, the side slides 40, 50 are connected to one another via the energy storage arrangement 70. In the simplest case, a spring connected directly to the side slides 40, 50 could be used as the energy storage arrangement 70. The spring pulls the two side carriages 40, 50 towards one another, in particular the laterally displaced side carriages 40, 50 towards the other fixed side carriages 50, 40, and is consequently tensioned or further tensioned with respect to a generally existing bias when the sliding door is off the middle position is moved to one of the two sides. Due to the above-described locking of driver 20, center slide 30 and (depending on the direction of movement) one of the two side slides 40, 50, the spring remains in the tensioned state until the activator 4 releases this locking mechanism when the door moves back. As a result, the spring force automatically pulls the door back into the middle position.

In the illustrated embodiment, the energy storage arrangement 70 is not a spring connected directly to the side parts 40, 50, but rather a spring 71 which is arranged in the central region of the device 1 and which interacts with a winding device 72, 74 in each case by means of ropes acting at its ends . The winding devices 72, 74 each comprise a gear wheel which engages in a toothed rack 44 or 54 of the left or right side slide 40, 50. Furthermore, each of the winding devices 72, 74 has a winding curve 73, 75, which is approximately spiral-shaped. In this arrangement too, the spring 71 is pulled apart as an energy store when the side slides 40, 50 move away from one another. Hence the spring practices 71 a restoring force on the respective laterally laterally displaced side slides 40, 50 in the direction of the central position. In contrast to a spring which is directly connected to the side parts, the winding devices 72 and 74 enable the force / travel relationship between the distance of the side slides 40, 50 from one another and the restoring force acting on them to be influenced by appropriately designing the winding curves 73 and 75.

In the 6A to 6C Another embodiment of a feed device 1 according to the invention is shown. The same reference numerals in these figures denote the same or equivalent elements as in the previously described embodiment.

In the figures, the feed device is in a central position ( Figure 6A ), in the right open position ( Figure 6B ) and in the left open position ( Figure 6C ). With regard to the basic mode of operation, the drawing-in device 1 of the second exemplary embodiment does not differ from that in FIGS Figures 1 to 5 shown feeder of the first embodiment. Reference is hereby made to the associated description of the first exemplary embodiment.

In contrast to the first exemplary embodiment, the carrier 20 is formed in two parts by two claws 22, 23. A center piece 21, as used in the first embodiment, is not used in this embodiment. Another difference is that the control slides 400, 500, which fix the left side slide 40 and the right side slide 50 in the respective open position of the driver 20, are designed as swivel levers.

In both of the illustrated exemplary embodiments, the pull-in device 1 according to the invention automatically moves a movable furniture part, in particular a sliding door, into a central position, a single energy storage arrangement 70 and a single damping device 60 being used. Both the energy storage arrangement 70 and the damping device 60 are effective when the door is moved in both directions or when the door is moved back from both directions. The fact that two cylinders 62 are used in the exemplary embodiments described occurs in order to enable a desired damping behavior with a flat construction of the device 1. Both cylinders 62 work in parallel, so that in principle they could also be replaced by a larger one. If the damping device were only effective in one direction of movement, it would be necessary to achieve the desired one Damping behavior four of the shown or two larger cylinders are used.

The pull-in device 1 according to the invention also offers the essential advantage over the prior art that the pull-in effect and possibly the damping effect is the same in both directions, while when using the previously known separate pull-in devices, for example due to manufacturing tolerances, the pull-in and damping effect and thus also the movement of the movable furniture part can vary depending on the direction.

Reference symbol list

1

Infeed device

2nd

Door fitting

3rd

Fastening dowels

4th

Activator

10th

casing

11

straight track

12

angled guideway

13

Sled runway

14

Housing dome

15, 16

Control track

17th

web

20th

Carrier

21st

Centerpiece

22, 23

claw

30th

Center sledge

31

Guide slot

32

contour

33, 34

Locking slot

35, 36

Coupling slot

37a, 38a

lower sloping section

37b, 38b

upper sloping section

40

left side slide

41

contour

42

Control spool guide slot

43

admission

44

Rack

50

right side slide

51

contour

52

Control spool guide slot

53

admission

54

Rack

60

Damping device

61

Piston rod

62

cylinder

70

Energy storage arrangement

71

feather

72, 74

Take-up device

73, 75

Winding curve

400

Spool

401

Coupling pin

402

Guide pin

500

Spool

501

Coupling pin

502

Guide pin

Claims (9)

1. An apparatus (1) for retracting a movable furniture part, in particular a sliding door, to a middle position, comprising

   - a carrier (20) which is displaceably guided in a housing (10) of the apparatus (1) and a displaceably guided middle slide (30) which is coupled thereto;

   - two displaceably guided side slides (40, 50) which are spaced from each other in the X direction, wherein the side slides (40, 50) are coupled to each other via an energy storage assembly (70), the force of which acts from the one of the side slides (40, 50) in the direction of the other of the side slides (40, 50), wherein

   - one control slider (400, 500) is provided for each of the side slides (40, 50), by means of which temporarily the side slide (40, 50), in whose direction the middle slide (30) moves, is coupled to the middle slide (30) in the case of movement of the middle slide (30) from the middle position,
   characterized in that

   - the control sliders (400, 500) are respectively guided in a control slider guide slot (42, 52) of the side slides (40, 50) in a direction transversely to the movement direction X and respectively comprise a coupling pin (401, 501) with which they engage in a coupling slot (35, 36) of the middle slide (30) for coupling the middle slide (30) with the respective side slide (40, 50), and respectively comprise a guide pin (402, 502) with which they respectively engage in a control track (15, 16) of the housing (10),

   - the control track (15, 16) comprises at least one section extending transversely to the movement direction X,

   - the other of the side slides (40, 50) that is not coupled to the middle slide (30) is temporarily fixed to the housing (10) by means of the control sliders (400, 500), and that

   - the side slides (40, 50) are coupled to each other by a damping device (60), by means of which a movement of the side slides (40, 50) towards each other is dampened, wherein

   - the damping device (60) comprises at least one cylinder (62) and a piston rod (61), and wherein

   - the at least one cylinder (62) is coupled to one of the side slides (40, 50) and the piston rod (61) is coupled to the other one of the side slides (40, 50), wherein the side slides (40, 50) comprise receivers (43, 53) in their respective inner region, and wherein one of the receivers (43, 53) is configured to latch into a head of the piston rod (61) and the other one of the receivers (43, 53) is arranged to connect the cylinder (62) to the other one of the side slides (40, 50).
2. The apparatus (1) according to claim 1, wherein the coupling slot (35, 36) comprises at least one section (37a, 38a, 37b, 38b) extending obliquely in relation to the movement direction X.
3. The apparatus (1) according to claim 1 or 2, wherein the carrier (20) can be fixed to the housing (10) in one of two outer opening positions which are spaced from the middle position.
4. The apparatus (1) according to one of the claims 1 to 3, wherein the carrier (20) comprises two lateral claws (22, 23) which are arranged to engage around an activator (4) of a door fitting (2).
5. The apparatus (1) according to claim 4, wherein the carrier (20) is guided in guideways (11, 12) of the housing (10), wherein at least one guideway (12) is bent off in an outer region in such a way that the activator (4) surrounded by the carrier (20) in the middle position is released when the carrier (20) is disposed in one of two opening positions in the outer region of the guideway (12).
6. The apparatus (1) according to claim 5, wherein the claws (22, 23) are pivotably linked to a middle part (21) of the carrier (20) and are guided with a guide pin in the bent-off guideway (12), such that in one of the open positions a respective one of the claws (22, 23) is pivoted in relation to the middle part (21) of the carrier (20).
7. The apparatus (1) according to one of the claims 1 to 6, wherein the side slides (40, 50) comprise receivers (43, 53) for connecting to the damping device (60).
8. The apparatus (1) according to one of the claims 1 to 7, wherein the side slides (40, 50) respectively comprise one toothed rack (44, 54), which cooperate with the energy storage assembly (70).
9. The apparatus (1) according to claim 8, wherein the energy storage assembly (70) comprises two winding apparatuses (72, 74) and a spring (71) arranged in between.

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