EP2488062B1 - Sliding arrangement - Google Patents

Description

The invention relates to a sliding arrangement, in particular Ausschubvorrichtung for drawers, sliding doors, hinged doors, etc. with a Ausschiebeanordnung having a sliding piece which is adjustable between an insertion position and a Ausschubstellung by means of a spring element.

The invention further relates to a method for operating a drawer.

From the DE 10 2007 008 688 A1 a draw-in device for drawers is known. This has a spring-loaded coupling piece, which is movable in the process of the drawer between a retraction position and a deployed position. The coupling piece is designed as a tilting segment, which is moved by a driver, which is mounted on the drawer side. When the tilting segment has reached the deployed position, the driver is released and the drawer can be freewheeled unaffected by the feeder further be pulled out. When the drawer is closed again, it can be freewheeled until the catch is caught by the tilting pad.

Then the previously tensioned spring pulls the drawer into the closed position. In order to prevent a hard impact of the drawer, the retraction movement is braked with a damper.

Increasingly, handleless drawers are desired for design reasons. With the known collection devices, such drawers are not always easy to open because the drawer is held under the action of the spring in the closed position.

Furthermore, ejection devices for drawers are known from the prior art. These have a Ausschiebeanordnung that move the drawer from a closed position to a part-open position after unlocking. In this process, a spring is unloaded to provide the kinetic energy. When the spring-controlled pushing operation is completed, the drawer can be gripped and fully opened. When closing the drawer, the spring is then tensioned again. The spring must now be designed to ensure a sufficiently long extension path, so that the drawer can be comfortably gripped. The springs required for this with a long spring travel have the disadvantage that a lot of energy has to be introduced by the user into the spring to tension the spring when closing the drawer. However, this is perceived as disturbing because a counterforce must be overcome over a large part of the closing path.

It is an object of the invention to improve the ease of use in a drawer or the like sliding element.

This object is achieved in that the sliding piece is spring-loaded adjustable on a first adjustment and in a subsequent second adjustment can be adjusted without spring loading in a freewheel of the Ausschubvorrichtung.

According to the invention thus provided by the sliding arrangement total discharge path is divided into two adjustment paths. In the region of the first adjustment path, the spring element is effective. This accelerates the sliding piece and thus the coupled drawer within this first partial path. In this way, a kinetic energy is introduced into the drawer or the sliding piece, which moves the drawer or the sliding piece in the region of the second adjustment path. After passing through the second adjustment path, the drawer is sufficiently opened so that it can be comfortably gripped and completely pulled out. Advantageously, the drawer moves at the end of the second travel path against a stop, so that a defined part-opening position is reached.

(U = Energie, c = Federkonstante, x = Federweg) relativ geringe Energie notwendig ist. Erfindungsgemäß ist somit berücksichtigt, dass der Federweg bei der erforderlichen Schließenergie im Quadrat eingeht. Er sollte daher entsprechend der Erfindung klein gehalten werden.When closing the drawer only the relatively short spring travel of the spring element must be overcome, according to the formula $\mathrm{U}=\frac{c\cdot x^2}{e}$

(U = energy, c = spring constant, x = travel) relatively low energy is necessary. According to the invention is thus taken into account that the spring path enters the square at the required closing energy. It should therefore be kept small according to the invention.

The ejection force, on the other hand, is calculated according to the formula F = c × x. The spring constant c is then to be selected such that, with a small ejection path, a sufficiently large force (F) is produced to accelerate the drawer and guide it through the second adjustment path.

According to a preferred embodiment of the invention, it may be provided that the total adjustment path combined from the first and second adjustment paths is at least 60 mm, preferably ≥ 70 mm. Then the drawer front can be conveniently gripped behind the drawer versions and the drawer can be pulled out completely. This is especially for handle-free drawer fronts advantageous. Advantageously, the sliding arrangement according to the invention is dimensioned so that the introduced by means of the spring element in the sliding piece of kinetic energy is so large that the sliding piece moves automatically until the end of the second adjustment path.

A sliding arrangement according to the invention may be characterized in that the spring element is held at the end of the first travel on a stop in a biasing position. As a result, the theoretically available travel of the spring element is further shortened, thereby significantly reducing the energy required to charge the spring. At the same time, however, the available force provided by the spring element remains unchanged in the closed position of the drawer.

A particularly preferred embodiment of the invention is such that with the Ausschiebeanordnung a coupling piece is indirectly or directly coupled, wherein the coupling piece is adjustable by means of a spring between a retraction position and a raised position. In this embodiment, the Ausschiebevorrichtung is combined with a feeder. To open the drawer while first the Ausschiebevorrichtung is triggered and forcibly controlled by the spring element to go through the first adjustment. Subsequently, the sliding piece passes passively through the second adjustment path. At the end of the second adjustment path, the coupling piece can then be moved against the force of the spring from the pull-in position into the raised position. The spring is then later when closing the drawer available to pull the drawer in the closed position. If the design is made such that the sliding piece at the end of the second path still has a kinetic residual energy, so this can also be transmitted, for example, in the coupling piece, whereby already the spring is moved to a partial biasing position, which ergonomic the Öffenvorgang the drawer optimized.

A controlled closing movement can be achieved in that a damper dampens the movement of the coupling piece from the raised position to the pull-in position.

A preferred embodiment variant of the invention may be characterized in that the coupling piece is held in the parking position by means of an actuating arrangement in a parking position, and that in the parking position, the sliding piece is adjustable relative to the coupling piece. This results in a simple structure for the feeder and the operation of the feeder can be advantageously integrated into the movement of the drawer.

For a feeder device according to the invention then results in a simple and inexpensive construction, if it is provided that the Ausschiebeanordnung is held biased by the spring element in the insertion position. The spring element can transmit its spring energy to the sliding piece upon actuation of the Ausschiebeanordnung in the closed position of the drawer. The drawer is thus brought into the partially open position.

A particularly preferred embodiment of the invention may be characterized in that the Ausschiebeanordnung has a Überhubmechanismus to cancel the insertion position. Thus, the feeder can be handled very user-friendly. To trigger the Ausschiebeanordnung, depending on the design of the drawer, for example, be operated only by pressing the drawer front of Überhubmechanismus.

If it is provided that the Ausschiebeanordnung has a support, and that in an adjustment of the sliding piece from the Ausschubstellung in the insertion position, a control, in particular a latch is effective, which allows an adjustment of the sliding piece relative to the carrier, then a triggered Ausschiebeanordnung be easily reloaded.

To prevent inadvertent release of the Ausschiebeanordnung is a variant of the invention such that the sliding piece is secured in the insertion position by means of a locking piece.

A preferred embodiment variant of the invention is such that a control of the Ausschiebeanordnung blocked when closing the drawer on a locking element mounted on the body side to an adjustment of the Ausschiebeanordnung of the Ausschubstellung in the insertion position.

A reliable operation of the intake device is guaranteed by the fact that the control secures the insertion position of the Ausschiebeanordnung at least in some areas of the spring caused by the adjustment of the coupling piece.

The actuation of the Ausschiebeanordnung succeeds simply by the fact that the control from the feed position for unlocking the Ausschiebeanordnung is adjustable against a holding piece.

The object of the invention is also achieved with a method for operating a drawer or the like, wherein in the closed position of the drawer a Ausschiebeanordnung is triggered, which moves the drawer from the closed position into a partial open position, wherein in a first traversing the drawer by means of a Spring element of a Ausschiebeanordnung is accelerated, and that the drawer is moved following the first travel in a second travel in a freewheel (F) of the Ausschiebeanordnung.

Here again serves the Ausschiebeanordnung for convenient opening of the drawer from the closed position.

If the invention is such that the drawer is pulled out of the part-opening position and this pulling movement is used to tension a spring, then later in the closing process, the spring tension can pull the drawer into the closed position.

This sequence can be realized particularly comfortable by the fact that during the opening of the drawer from the part-opening position a coupling piece is brought from a retraction position to an extended position, and that brought on reaching the extension position the coupling piece in a parking position and the coupling between the Ausschiebeanordnung and the coupling piece is lifted.

The ease of use is then especially in handle-less drawers, etc. high, if it is provided that an overstroke mechanism is actuated to trigger the Ausschiebeanordnung from the closed position.

If it is provided that during a movement of the drawer from an open or partially open position in the direction of the closed position, the Ausschiebeanordnung initially adjusted in its freewheel (F) and then the spring element of the Ausschiebeanordnung is stretched to the sliding piece from the Ausschubstellung in the insertion position move, then the Ausschiebeanordnung is brought when closing the drawer in the insertion position, so that this process is integrated into the "natural" movement of the drawer, which is perceived as particularly user-friendly.

For a smooth closing operation, it may be provided that the Ausschiebeanordnung is pulled by the spring in the closed position of the drawer and simultaneously braked by means of a damper.

For tensioning the Ausschiebeanordnung it can be provided that the Ausschiebeanordnung when closing the drawer, etc. is driven with a control on a locking element. This allows a low parts cost.

It is advantageous that the blocking element is moved in the interior of the body on the locking element. As a result, a reliable operation and a protected accommodation of the actuating point is possible. In addition, results for the operator a clear and easily understandable operation.

A variant of the invention is such that the Ausschiebeanordnung immediately before the coupling piece is retracted with the spring is brought from the Ausschubstellung in the insertion position.

Figuren 1 bis 10

eine Einzugvorrichtung in Seitenansicht, teilweise im Schnitt und in verschiedenen Betriebsstellungen.

The invention will be explained in more detail below with reference to an embodiment shown in the drawings. Show it:

FIGS. 1 to 10

a feeder in side view, partly in section and in different operating positions.

Fig. 1 shows a feeder, as used for example in drawers are used. Also conceivable is the use in other components to be moved, such as doors, flaps, etc. The retraction device comprises a base part 40 and a housing 10, which is fastened to a housing body (not shown) in each case. Furthermore, a Ausschiebeanordnung 20 is provided, which is arranged on a drawer (also not shown).

The housing 10 is provided with screw 11.1, with which a body-side mounting is possible. The housing 10 has two mutually parallel spaced side walls 11, are incorporated in the guides 11.2. In this case, the guides 11.2 have a slot-shaped opening, which terminates in a widened recess 11.21. The guides 11.2 of the two side walls 11 are aligned with each other.

In the housing 10, a damper 12 is housed. The damper 12 is designed as a fluid damper, in this case as an air damper. The use of an air damper has the advantage that in the event of damage no liquid can escape and contaminate the drawer contents. The damper 12 has a cylinder 12.6, in which a piston 12.2 outgoing from the in Fig. 1 shown inserted position pulled out become. During the return movement of the piston 12.2 he works against an air cushion, the air pressure is continuously reduced. For this purpose, a small opening in an insert 12.3 is provided, through which the compressed air can escape in a controlled manner. At its end facing away from the insert 12.3, the piston rod 12.1 has a head section 12.4, which forms a pivot bearing 12.5. At the pivot bearing 12.5 a coupling piece 13 is pivotally supported in the form of a tilting element. The pivoting movement is in this case in accordance with a perpendicular to the image plane Fig. 2 extending pivot axis. On the coupling piece 13, a spring holder 13.1 is arranged, which holds one end of a spring 14. The other end of the spring 14 is hung on the housing side.

The coupling piece 13 has a trigger 13.2, which is arranged at a distance from the pivot axis. Furthermore, a driver 13.4 is present on the coupling piece 13, which is formed via a spring element 13.5 on an arm 13.3. With the driver 13.4, a connecting part 30 of a Ausschiebeanordnung 20 is releasably connectable.

The Ausschiebeanordnung 20 includes the connecting part 30, whose task is to produce the detachable coupling with the coupling piece 13. For this purpose, the connecting part 30 on a holder 32 has a latch 33 which can be coupled in the region between the trigger 13.2 and the driver 13.4. Furthermore, the holder 32 carries by means of a pivot bearing 34, a control 35 in the form of a lever. At its free end facing away from the holder 31, the control 35 is equipped with a rotatable roller 37 and a rotatable blocking roller 38. Between the pivot bearing 34 and the blocking roller 38, a stop 36 is formed. On the holder 32 includes a support 31.

On the carrier 31, a plunger 24 is held at the end facing away from the holder 32 via a threaded connection. For this purpose, the plunger 24 is screwed with an external thread 24.1 in a threaded receptacle of the carrier 31. The plunger 24 carries a locking ring 24.2. This is freely rotatably supported in a bearing receptacle of the plunger 24 in the circumferential direction. The locking ring 24.2 has a latching element which is guided in a control cam 23 of a hollow cylinder of a sliding piece 21. In this case, the control cam 23 is incorporated in the form of a groove in the inner wall of the sliding piece 21. The control cam 23 and the locking ring 24.2 of the plunger 24 form a Überhubmechanismus. The operation is similar to a ballpoint pen, wherein the plunger 24 forms the push button of the ballpoint pen. In the sliding piece 21, a spring element 22 is set in the form of a helical spring and secured against buckling on the walls of the hollow cylinder.

The holder 32 is slidably guided in a linear guide 34.1 with a hinge pin forming the pivot bearing 34. The wall forming the linear guide 34.1 carries a shaped piece 39 which forms a mating surface 39.1 and a running surface 39.2. The fitting 40 is U-shaped in cross-section. It has a mounting portion 41 with holes 43 for screwing with a furniture body. At the attachment portion 41, a wall 42 connects perpendicular to. The wall 42, the mounting portion 41 and a parallel to this further wall carry an integrally formed, inclined locking surface 46 and a retaining piece 47. Furthermore, a locking element 44 is pivotally hinged to the mounting portion 41 and by gravity and / or a spring element in the in Fig. 1 held starting position held. The blocking element 44 has two oppositely oriented control cams 44.1, 44.2.

With reference to the FIGS. 1 to 10 the operation of the feeder device according to the invention will be explained in more detail below.

The Fig. 1 shows the starting position of the feeder, thus as the position in which the drawer is in the closed position. This represents the position in which the coupling piece 13 is in the retracted position. The overstroke mechanism is in a latching position, wherein the latching ring 24.2 is blocked at a latching projection of the control cam 23. The blocking element 35 is held by means of a stop 35.1 on the holder 32 in a raised unlocking position. To release the overstroke mechanism, an overstroke Ü in, for example the drawer front, is introduced in the direction of the actual drawer closing movement. This overtravel Ü is over a screwed with the drawer sliding piece 21 introduced. In this case, the sliding piece 21 shifts a little way against the bias of the spring element 22 in the direction of the Über Ü over the plunger 24. As a result, the detent position of the locking ring 24.2 lifted in the control cam 23 and the locking ring 24.2 twisted in the circumferential direction until it in a Linear section of the cam 23 passes. In order to carry out the excess lift Ü, the latch 33 is supported on the trigger 13.2.

If now the depressed drawer is relieved, then due to the released locking connection between the locking ring 24.2 and the control cam 23, the sliding piece 21 from its insertion position ( Fig. 1 ) in the Ausschubstellung ( Fig. 2 ) brought. This adjustment S is effected by the spring element 22, which holds the sliding piece 21 biased in the insertion position. The total displacement, which the sliding piece 21 passes through, is subdivided into a first adjustment path and a second adjustment path.

Within the first adjustment path, the spring element 22 is effective. It is supported at its one end on the sliding piece 21 and its other end opposite the plunger 24. Now that the plunger 24 has been unlocked by means of Überhubmechanismusses Ü, the spring element 22 can relax, the sliding piece 21 is guided under the action of the spring element 22 through the first path. At the end of the first travel, the spring element 22 is in its fully relaxed state. Then the second traverse path joins as freewheel F. In this area, no spring force acts on the sliding piece 21. Rather, the kinetic energy of the sliding piece 21 generated in the first traverse path is utilized to pass through the freewheel F. At the end of the second adjustment path, the adjusting movement of the sliding piece 21 is limited by a stop. The stop couples the sliding piece 21 with the plunger 24 in the direction of the sliding movement S (according to FIG Fig. 2 ) positively. Fig. 2 shows the fully extended position of the sliding piece 21 after passing through the first and the second adjustment. Since the drawer is coupled to the sliding piece 21, this is partially opened according to the travel of the sliding piece.

When the in Fig. 2 shown position is reached, the drawer can be easily gripped and pulled manually in a further part-opening position or fully in the open position. In this case, the coupled with the drawer Ausschiebeanordnung is then moved in the opening direction Ö. Since the coupling piece 13 is coupled to the latch 33 with the Ausschiebeanordnung 20, and the coupling piece 13 in the opening direction Ö (see Fig. 3 ) emotional. In this case, the coupling piece 13 is guided in the guide 11.2. The coupling piece 13 takes the piston rod 12.1 of the damper 11 and thus displaces the piston 12.2. At the same time the spring is stretched. The coupling piece 13 is pulled by the pull-out device 20 until the catch 13.4 guided in the guide 11.2 reaches the region of the cutout 11.21. Due to the eccentric to the pivot axis 12.5 acting spring 14, the coupling piece 12 is tilted about the pivot axis 12.5, wherein the driver 13.4 falls into the recess 11.21. He gets out of engagement with holder 32. Since now the connection between the Ausschiebeanordnung 20 and the coupling piece 13 is repealed, the drawer can be pulled out in the freewheel, as Fig. 4 illustrated. In this case, the roller 37 deflects the blocking element 44 on its control cam 44.1 and lifts it up against the direction of gravity. The roller 37 passes through the blocking element 44 and the control element 35 leaves the fitting part 40 through the opening 45.

Fig. 4 shows a further part-opening position.

When closing the drawer (closing direction S) and thus at the transition of the feeder of Fig. 4 to Fig. 5 hits the roller 37 on the cam 44.2 of the locked in this direction blocking element 44. It runs there against the direction of gravity until the blocking roller 38 strikes the tread 39.2, as Fig. 6 shows. Now, the connecting part 30 can not be pushed further in the closing direction S. The closing movement S now causes the plunger 24 einschiebt in the sliding piece 21, wherein first run through the freewheel F of the plunger 24 and then the spring element 22 is tensioned until the plunger 24 its locking position (locking ring 24.2 and cam 23). Then the push-out arrangement 20 stretched again and is in its slot position. During this process, the blocking roller 38 rolls on the running surface 39.2 until it passes over an edge 39.3 at the end of the running surface 39.2, which transfers it into the counter surface 39.1.

It then pivots how Fig. 7 shows, due to the further running on the locking element 44 roller 37, the blocking element 35 in its blocking position. In this case, the blocking roller 38 bears against the mating surface 39.1 and blocks inadvertent release of the push-out arrangement from the push-in position.

As the Fig. 7 shows, the latch 33 hits immediately after the Ausschiebeanordnung 20 was tensioned on the trigger 13.2 and tilts this about the pivot bearing 12.5. The guide elements 13.2 are excavated from the recess 11.21 and the coupling piece 13 is released. Then the guide elements reach 13.6 in the region of the guide 11.2 and the spring 14, the coupling piece 13 pull back into the retraction position. The damper 12 dampens this pull-in movement. With the coupling piece of the bolt 33 is pulled on the driver 13.4 (see Fig. 8 ). In this case, the drawer is pulled over the sliding piece 21 automatically in the closed position. In this by the FIGS. 8 and 9 In the closed position of the drawer, the control 35 drops due to gravity and / or by spring action in the area below the retaining piece 47, such as Fig. 10 shows. Fig. 10 is again identical to Fig. 1 and shows the starting position, in which the drawer is ready for a new operation.

Usually, the housing 10 and the fitting 40 are attached to the furniture body. However, it is also conceivable to attach these parts to the drawer. Then, the Ausschiebeanordnung 20 is attached to the other furniture component.

The arrangement according to the invention may be arranged laterally in the region of one or both of the drawer walls extending in the direction of the drawer movement. The feed guide can also be part of the drawer slide. she can continue to be centrally located under the drawer bottom. Then, for example, the Ausschiebeanordnung 20 is held on the drawer front below the drawer bottom. The housing 10 is then arranged laterally on the furniture body. The coupling of these components then takes place with the inclusion of a cross member or drawer as a link.

Claims (25)

1. Sliding arrangement, in particular pushing-out apparatus for drawers, sliding doors, hinged doors, etc. having a sliding-out arrangement (20) which has a sliding piece (21) which is displaceable between a pushed-in position and a pushed-out position by means of a spring element (22), characterized in that the sliding piece (21) is displaceable on a first displacement path in a spring-loaded manner and is displaceable in a subsequent second displacement path without spring-loading in a free travel of the sliding-out arrangement (20).
2. Sliding arrangement according to Claim 1, characterized in that a stop limits the displacement movement of the second displacement path.
3. Sliding arrangement according to Claim 1 or 2, characterized in that the overall displacement path combined from the first and second displacement paths is at least 60 mm, preferably ≥ 75 mm.
4. Sliding arrangement according to one of Claims 1 to 3, characterized in that the movement energy introduced into the sliding piece (21) by means of the spring element (22) is so large that the sliding piece (21) travels automatically as far as the end of the second displacement path.
5. Sliding arrangement according to one of Claims 1 to 4, characterized in that the spring element (22) is held in a preloaded position against a stop at the end of the first travel path.
6. Sliding arrangement according to one of Claims 1 to 5, characterized in that a coupling piece (13) is indirectly or directly couplable to the sliding-out arrangement (20), wherein the coupling piece (13) is displaceable by means of a spring (14) between a retracted position and an extended position.
7. Sliding arrangement according to one of Claims 1 to 6, characterized in that a damper (12) damps the movement of the coupling piece (13) from the extended position into the retracted position.
8. Sliding arrangement according to one of Claims 1 to 7, characterized in that the coupling piece (13) is held in a parked position in the extended position by means of a positioning arrangement (recess (11.21), guide (11.2), carry-along member (13.4)), and in that in the parked position, the sliding piece (21) is displaceable in relation to the coupling piece (13).
9. Sliding arrangement according to one of Claims 1 to 8, characterized in that the sliding-out arrangement (20) is held in the pushed-in position under spring preloading by means of the spring element (22).
10. Sliding arrangement according to one of Claims 1 to 9, characterized in that the sliding-out arrangement (20) has an excess-travel mechanism for cancelling the pushed-in position.
11. Sliding arrangement according to one of Claims 1 to 10, characterized in that the sliding-out arrangement (20) has a carrier (31), and in that during a displacement of the sliding piece (21) from the pushed-out position into the pushed-in position, a catch or control element (35), which enables displacement of the sliding piece (21) in relation to the carrier (31), is active.
12. Sliding arrangement according to one of Claims 1 to 11, characterized in that the sliding piece (21) is secured in the pushed-in position by means of an arresting piece (39).
13. Sliding arrangement according to one of Claims 1 to 12, characterized in that, while the drawer is being closed, a control element (35) of the sliding-out arrangement (20) blocks against a locking element (44), which can be mounted on the basic structure, during a displacement of the sliding-out arrangement (20) from the pushed-out position into the pushed-in position.
14. Sliding arrangement according to Claim 13, characterized in that the control element (35) secures the pushed-in position of the sliding-out arrangement (20) at least in subregions of the displacement of the coupling piece (13) brought about by the spring (14).
15. Sliding arrangement according to Claim 10 or 11, characterized in that the control element (35) is displaceable from the retracted position in order to unlock the sliding-out arrangement (20) against a holding piece (47).
16. Method for operating a drawer or the like, wherein, in the closed position of the drawer, a sliding-out arrangement (20) is released, said sliding-out arrangement (20) moving the drawer from the closed position into a partially open position, wherein, in a first travel path, the drawer is accelerated by means of a spring element (22) of the sliding-out arrangement (20), and wherein the drawer is moved, following the first travel path, in a second travel path in a free travel (F) of the sliding-out arrangement (20).
17. Method according to Claim 16, characterized in that, during a displacement of the drawer from the partially open position, a spring (14) of a retracting apparatus is tensioned.
18. Method according to Claim 16 or 17, characterized in that, while the drawer is being opened from the partially open position, a coupling piece (13) is moved from a retracted position into an extended position, and in that, when the extended position is reached, the coupling piece (13) is moved into a parked position and the coupling between the sliding-out arrangement (20) and the coupling piece (13) is cancelled.
19. Method according to Claim 16 or 17, characterized in that, in order to release the sliding-out arrangement (20) from the closed position, an excess-travel mechanism is actuated.
20. Method according to one of Claims 16 to 19, characterized in that, while the drawer is being moved from an open or partially open position in the direction of the closed position, the sliding-out arrangement (20) is displaced first of all into its free travel (F) and then the spring element (23) of the sliding-out arrangement (20) is tensioned, in order to move the sliding piece (21) from the pushed-out position into the pushed-in position.
21. Method according to one of Claims 16 to 20, characterized in that the sliding-out arrangement (20) is pulled by means of the spring (14) into the closed position of the drawer and simultaneously is braked by means of a damper (12).
22. Method according to one of Claims 16 to 21, characterized in that the sliding-out arrangement (20), during the closing of the drawer etc., is moved by way of a control element (35) onto a locking element (44).
23. Method according to Claim 22, characterized in that the locking element (44) is moved onto the locking element (44) in the interior of the basic structure.
24. Method according to one of Claims 16 to 23, characterized in that the sliding-out arrangement (20) is moved into the pushed-in position immediately before the coupling piece (13) is pulled in by way of the spring (14).
25. Method according to one of Claims 16 to 24, characterized by one of Claims 1 to 15.

Images