FURNITURE WITH A DEVICE FOR HOLDING, BRAKING OR ACCELERATING A MOVABLE FURNITURE PART

Description

[0001] The present invention relates to a piece of furniture according to the preamble of claim 1.

[0002] EP 2 194 810 B1 discloses a pull-out guide with a self-closing device, in which an activator is arranged on a closure plug of a movable guide rail, which can be brought into engagement with a driver of a self-closing device. The activator is connected to the plug via a web and is designed to be flexible, so that in the event of a malfunction, the activator can be deflected along a run-up slope of the driver perpendicular to the longitudinal direction and then latched into a receptacle of the driver. If the driver has inadvertently reached an end position, the movable furniture part can thus be re-coupled to the driver. However, a disadvantage of this activator is that in the coupled position, if the activator exerts a high tensile force on the driver, the driver can be removed from the receptacle on the driver.Especially when the movable furniture part is to be locked, this can lead to unintentional unlocking.

[0003] DE 10 2020 127 404 discloses a locking device for movable furniture parts, which ensures that only one movable furniture part of a plurality of movable furniture parts can be moved from the closed position to an open position at a time. For this purpose, each movable furniture part is connected to a pin-shaped activator that can be locked to a locking element. The locking elements are movable on a bar perpendicular to an extension direction, and the locking elements must be spaced to match the movable furniture parts. A spring-loaded mounting of the activator is not provided.

[0004] US 2016 / 0007749 discloses a drive device for a movable furniture part with a lockable ejection device, which has a force-loaded ejection lever for ejecting the movable furniture part from a closed position into an open position. In the closed position, the ejection lever rests against a locking element, and the ejection device can be unlocked by moving the movable furniture part in the closing direction into an overpressure position.

[0005] DE 38 34 721 discloses a drawer slide with multiple guide rails that can be moved from a retracted position to a fully extended position. The slide can be automatically moved to the fully extended position along a retraction path.

[0006] It is therefore an object of the present invention to provide a piece of furniture for holding, braking or accelerating a movable furniture part, which, with a spring-mounted activator, enables easy engagement with a driver and provides high holding forces when locked.

[0007] This problem is solved by a piece of furniture having the features of claim 1.

[0008] In a piece of furniture according to the invention, several movable furniture parts are coupled to a furniture body with a device for holding, decelerating, or accelerating the movable furniture parts, in particular a drawer as a movable furniture part. The activator is preferably fixed to the movable furniture part and the driver to the furniture body. However, it is also possible to provide the activator on the furniture body and the driver on the movable furniture part. Furthermore, a sliding door can also be used as the movable furniture part.

[0009] For a compact design, a strip with multiple housings is attached to the furniture body. Each housing provides a guide track for the driver, which can be brought into engagement with the activator on a guide rail on a pull-out guide or drawer. This allows the device to be used effectively as a locking device for locking drawers.

[0010] In the furniture according to the invention, the activator is mounted in an engaged position on the driver in such a way that, when a force is applied in the longitudinal direction, the activator can be preloaded toward the driver, thus increasing the engagement forces. As a result, the activator is coupled to the driver in a self-reinforcing manner, i.e., a load caused by a force in the longitudinal direction leads to a preload of the activator toward the driver, so that the coupling between the driver and activator can withstand high holding forces.

[0011] Preferably, in the case of an increasing force, in particular a tensile force on the activator in the longitudinal direction, the spring element pretensions the activator more strongly towards the driver, so that an unintentional release of the activator from the driver is prevented.

[0012] In a preferred embodiment, the activator can be moved from an initial position with a relaxed spring element in opposite directions perpendicular to the longitudinal direction. This allows the activator to be pushed in a first direction when traveling over a ramp on the driver in order to lock onto the driver. If the activator is subjected to a tensile load in the longitudinal direction in the locked position, the activator can be moved via the spring element in a second, opposite direction perpendicular to the longitudinal direction in order to press the activator into the driver. This allows the activator to be moved flexibly depending on the application.

[0013] The spring element is preferably designed as a leaf spring, and at least one leg of the leaf spring extends from the activator substantially in the longitudinal direction and counter to the direction of action of the force. The at least one leg can have at least one section that is oriented at an angle to the longitudinal direction. Thus, when a force parallel to the longitudinal direction is applied, the leg with the activator can ensure that the activator is pressed against the driver. The leg preferably extends counter to the direction of action, so that the leg on which the activator is arranged is subjected to pressure.

[0014] The spring element can be made of a bent steel sheet and, for example, be web-shaped and / or U-shaped, with one end being coupled to a movable furniture part, for example via a guide rail of a pull-out guide or a running part of a sliding door fitting, while the other end has the activator.

[0015] To prevent plastic deformation of the spring element, at least one stop is preferably provided on the spring element, which limits the deflection of the leg on the spring element carrying the activator. As a result, the spring element can be deflected with the stop from an initial position with the spring element relaxed by only a predetermined distance in one direction in order to prevent plastic deformation of the spring element. The stop can be formed integrally with the spring element. It is also possible to manufacture the activator and the spring element as a single piece. The activator can, for example, be designed as a cylindrical pin or embossed element that can be inserted into the receptacle on the driver. The activator can be designed as a cylindrical, conical, or cuboidal element made of a solid or hollow material.The activator can be attached to the spring element in a form-fitting or material-fitting manner, or it can be formed integrally with it. The activator can be manufactured by forming a spring sheet or wire, for example, as a wound eyelet or as a projection.

[0016] The device for holding, braking, or accelerating a movable furniture part can, for example, be designed as a locking system, particularly in a piece of furniture with multiple drawers, to ensure that only one drawer at a time is moved from the closed position to the open position, so that when one drawer is arranged in an open position, the other drawers are secured against opening. Alternatively, the device can also be used with a self-closing mechanism, for example a damped self-closing mechanism in which the driver is pretensioned in a closing direction via an energy accumulator. Furthermore, the device can also be designed as an ejection device in which the activator is coupled to the driver in order to eject a movable furniture part from the closed position in the opening direction.

[0017] The invention will be explained in more detail below using several exemplary embodiments with reference to the accompanying drawings. They show: Figure 1a perspective view of a piece of furniture; Figure 2a view of the furniture of the Figure 1 without furniture body; Figure 3 shows a detailed view of part of the device for holding, braking or accelerating a movable furniture part on the furniture; Figures 4A and 4B show two views of a pull-out guide for mounting the drawers of the Figure 2 ; Figures 5 to 7 show several detailed views of the device of the Figure 3 when coupling the active gate with the driver; Figures 8 to 11 several views of the device of the Figure 3 when coupling the activator with the driver when the driver is already in the closed position; Figures 12 to 14 show several views of the device of the Figure 3when the drawer is locked in the closed position by the device and a tensile force is applied; Figures 15A to 15T show several views of different embodiments of an activator with a spring element; Figure 16 shows a perspective view of an activator of a device mounted on the drawer, and Figures 17A and 17B show two views of the activator of the device of Figure 16.

[0018] A piece of furniture 1 comprises a furniture body 2 on which a plurality of drawers 3 are movably arranged. Figure 2 the furniture 1 is shown without the furniture body 2, and it can be seen that the drawers 3 can each be moved via pull-out guides 4 which are fixed to the furniture body 2.

[0019] A device 5 for holding, decelerating, or accelerating a drawer 3 is arranged in the furniture body. In the illustrated embodiment, the device 5 is designed as a locking system in which the device 5 holds the drawers 3 in the closed position as soon as one of the drawers 3 is arranged in an open position. The device 5 comprises a vertical bar 6 on which several housings 7 are arranged.

[0020] In Figure 3 A detailed view of a housing 7 and a drawer 3 is shown. The drawer 3 is arranged on a movable guide rail 8 of a pull-out guide 4 and can be held in a closed position by the device 5.

[0021] In the Figures 4A and 4Ba pull-out guide 4 is shown, which has a stationary guide rail 9 which can be fixed to the furniture body 2 and on which the movable running rail 8 is held so that it can move. Between the guide rail 9 and the running rail 8 there is a pull-out-extending central rail 10 which can optionally be omitted. A hook 11 is formed on the back of the running rail 8 and serves to fix the drawer 3. Adjacent to the hook 11 there is an activator 12 in the form of a pin which is spring-mounted on a spring element 13. The spring element 13 is designed as a leaf spring and comprises two legs 14 and 15 which are connected to one another in a substantially U-shape via a bend 19. The activator 12 is held on the leg 14, while the leg 15 is fixed to the running rail 8, for example by welding. Depending on the design of the spring element 13, other detachable or non-detachable joining types orCan be used for material and form-fitting connections.

[0022] In the Figures 5A and 5B the device 5 is shown in a position in which the activator 12 is arranged on an input side of the housing 7 in order to be moved into a closed position. A guide track for a movable driver 16 is formed on the housing 7, which has a receptacle 17 for inserting the activator 12. The driver 16 is in a pivoted end position, and the activator 12 can move into the receptacle 17 in order to move the driver 16 from the end position along the guide track on the housing 7. The activator 12 is first moved against a bevel 70 on the housing 7 and can thus slightly lift the housing 7 relative to the rail 6.

[0023] In the Figures 6A and 6BThe activator 12 has been moved slightly further and is positioned in the receptacle 17 of the driver 16. The activator 12 can now pivot the driver 16 and move it into a second end position, which corresponds to the closed position.

[0024] In the Figures 7A and 7B the activator 12 with the driver 16 is arranged in the closed position. From this position, in the unlocked position of the device 5, the drawer 3 with the guide rail 8 and the activator 12 can be moved in the opening direction again, whereby the driver 16 then returns to the first end position according to Figure 5 is moved. If the device 5 is in a locked position because another drawer 3 is in the open position, the drawer should be held in the closed position via the device 5.

[0025] In Figures 8A and 8Ba position is shown in which the driver 16 is already arranged in the closed position, while the running rail 8 and the activator 12 are arranged in an open position. This can occur, for example, due to incorrect operation or during assembly of the drawers 3. In order to nevertheless enable coupling of the activator 12 to the driver 16, a run-on bevel 18 is formed on the driver 16, which is arranged slightly inclined to the longitudinal direction of the running rail 8. The activator 12 is moved further in the closing direction with the running rail 8, as shown in the Figures 9A and 9B is shown, so that the activator 12 comes to rest with a front edge on the run-up slope 18 and is then moved perpendicular to the longitudinal direction against the force of the spring element 13.

[0026] As in the Figures 10A and 10BAs shown, the activator 12 has been moved perpendicular to the longitudinal direction of the guide rail 8, whereby the spring element 13 is compressed. As a result, the activator 12 moves towards the guide rail 8 and can thus be moved along the run-up slope 18. The activator 12 then reaches the receptacle 17 on the driver 16 behind the run-up slope 18, as shown in the Figures 11A and 11B is shown. The activator 12 can thus be locked onto the driver 16 and, if necessary, move it again in the opening direction along the guide track.

[0027] In the Figures 12A and 12B The device 5 is again shown in a closed position, in which the activator 12 is inserted on the spring element 13 in the receptacle 17 of the driver 16. The device 5 is now intended to lock the activator 12 because another drawer 3 of the furniture 1 is already arranged in an open position.

[0028] If a force is now exerted on the drawer 3 in the opening direction, i.e. in the longitudinal direction of the guide rail 8 according to the arrow in Figure 13A , the spring element 13 presses on the activator 12, which is prevented from opening by the driver 16. For this purpose, the housing 7 can be displaced vertically along the bar 6, or a locking element can block the movement of the driver 16. If the force on the guide rail 8 is increased, the Figures 14A and 14B The activator 12 is pressed by the spring element 13 towards the driver 16, since the guide rail 8 is in Figure 14 Ais pulled to the left and the spring element 13 attempts to spread open. This further strengthens the engagement of the activator 12 on the driver 16, thus enabling the provision of high holding forces for secure locking of the drawer 3. The leg 14, which in the relaxed position has a section parallel to the longitudinal direction and a section inclined to the longitudinal direction, for example at an angle between 5° and 15°, is subjected to pressure and presses the activator 12 against the driver 16.

[0029] The activator 12 can thus be moved from the relaxed position of the spring element 13 perpendicular to the longitudinal direction of the guide rail 8, once to travel over the run-up slope 18 ( Figure 10A ), whereby the activator 12 is then moved towards the guide rail 8, and once in the opposite direction ( Figure 14A ), whereby the activator 12 is then moved towards the driver 16.

[0030] In Figure 15AAn embodiment of an activator 12 is shown on a spring element 13, which is designed as in the previous embodiment, wherein the spring element 13 has a first leg 14 for fixing the activator 12 and a second leg 15 for fixing to a guide rail 8. In addition, the spring element 13 has a stop 20 to limit the movement of the activator 12 at least outwards, i.e. towards the driver 16. The stop 20 is formed on an angular web 22, which passes through an opening 21 in the leg 14. The stop 20 prevents the movement of the activator 12 from occurring in the event of a strong tensile load on the guide rail 8 ( Figure 14A) the activator 12 presses too hard against the driver 16, so that the spring element 13 could deform plastically or the driver 16 could be damaged. Furthermore, the stop 20 can prevent the leg 14 from twisting relative to the leg 15, thus preventing the activator from deflecting upwards and / or downwards in this case. This lateral fixation is particularly evident in the following embodiments with a double stop 30.

[0031] In Figure 15B a modified embodiment of the stop 20 is shown, which is formed integrally with the leg 15 on a modified web.

[0032] In Figure 15C A stop 30 is provided which limits the movement of the leg 14 with the activator 12. The stop 30 is formed integrally with the leg 15 as an angle.

[0033] The Figures 15D to 15Lshow different designs of a U-shaped spring element, each of which has at least one integrally formed stop for limiting the movement of the activator 12 on the leg 15. The skilled person can implement such a stop in various ways.

[0034] In Figure 15M A modified embodiment of a spring element is shown, which is designed as a web and has a first section 14a parallel to the longitudinal direction, to which the activator 12 is fixed. A second section 14b is inclined to the longitudinal direction, and a third section 14c is aligned parallel to the longitudinal direction and fixed to the guide rail 8. The section 14c is fixed closer to the rear end of the guide rail 8 than the activator 12 is arranged, in order to cause the activator 12 to be pressed towards the driver 16 when the guide rail 8 is subjected to tensile load. Figures 15N to 15Tshow variants of a spring element with which this function can also be realized, i.e. with which the activator 12 is pressed against the driver 16 when there is a tensile load on the guide rail.

[0035] In Figure 16 A modified embodiment of an activator 12 with a spring element 13 is shown, which is not fixed to the guide rail 8, but rather to the drawer 3. For this purpose, a holder 40 is provided on the drawer 3, which is U-shaped and in which the U-shaped spring element 13 with the activator 12 is arranged.

[0036] In the Figures 17A and 17BThe U-shaped holder 40 is shown, in which the spring element 13 with the activator 12 is accommodated. Two dowels 41 are formed on the holder 40, which, in the mounted position, engage in openings in the drawer 3. The activator 12 therefore does not have to be fixed directly to the guide rail 8, but can also be held on a drawer 3. Alternatively, the spring element can also be detachably or permanently attached to the movable furniture part directly, by gluing or locking and / or by means of other connecting elements.

[0037] In the illustrated embodiment, the driver 16 and the activator 12 are part of a locking system that ensures that only one of the drawers 3 can be in the open position at a time, preventing the furniture 1 from tipping over. However, it is also possible to use the activator 12 and the driver 16 with a self-closing or ejection mechanism. In either case, the activator 12 is spring-mounted on a spring element 13 to reinforce the engagement with the driver 16 under tensile load. List of reference symbols

[0038] 1Furniture 2Furniture body 3Drawer 4Extension guide 5Device 6Bar 7Housing 8Running rail 9Guide rail 10Middle rail 11Hook 12Activator 13Spring element 14Legs 14a, 14b, 14cSection 15Leg 16Driver 17Receptacle 18Bevel 19Bend 20Stop 21Opening 22Web 30Stop 40Holder 41Dowel 70Bevel

Claims

1. Piece of furniture (1) with a furniture body (2) and a plurality of movable furniture parts (3), which are guided or held on the furniture body (2) via a device (5), and the device (5) is used for holding, braking or accelerating the movable furniture parts (3) and has a driver (16) which can be moved along a guide path between at least two end positions, and an activator (12) which can be brought into engagement with the driver (16) at a receptacle (17) in order to hold, brake or accelerate one of the movable furniture parts (3), and can be decoupled from the driver (16) at one of the two end positions, wherein the activator (12) is movable through a guide in a longitudinal direction and is resiliently mounted in a direction perpendicular to the longitudinal direction via a spring element (13) and is movable along a run-up slope (18) on the driver (16) in order to latch on the receptacle (17) behind the run-up slope (18), wherein the activator (12) can be pretensioned in an engagement position on the driver (16) in the event of a force in the longitudinal direction towards the driver (16), characterized in that a strip (6) with several housings (7), each with a guide track for a driver (16), is fixed to the furniture body (2) and each driver (16) on the housing (7) can be brought into engagement with the activator (12) on a running rail (8) of a pull-out guide (4) or one of the movable furniture parts (3).

2. Piece of furniture according to claim 1, characterized in that with an increasing force in the longitudinal direction on the activator (12), the spring element (13) biases the activator (12) more strongly towards the driver (16).

3. Piece of furniture according to claim 1 or 2, characterized in that the activator (12) can be moved from an initial position with a relaxed spring element (13) perpendicular to the longitudinal direction in opposite directions.

4. Piece of furniture according to one of the preceding claims, characterized in that the spring element (13) is designed as a leaf spring and at least one leg (14, 15) extends from the activator (12) essentially in the longitudinal direction counter to the direction of action of the force in the longitudinal direction.

5. Piece of furniture according to claim 4, characterized in that the at least one leg (14, 15) has at least one section which is aligned at an angle to the longitudinal direction.

6. Piece of furniture according to one of the preceding claims, characterized in that the spring element (13) is web-shaped and / or U-shaped.

7. Piece of furniture according to one of the preceding claims, characterized in that at least one stop (20, 30) is arranged on the spring element (13), which stop limits the deflection of the leg (14) carrying the activator (12) on the spring element (13).

8. Piece of furniture according to claim 7, characterized in that the stop (20, 30) is formed integrally with the spring element (13).

9. Piece of furniture according to one of the preceding claims, characterized in that the activator (12) and the spring element (13) are manufactured in one piece.

10. Piece of furniture according to one of the preceding claims, characterized in that the activator (12) is produced by forming a spring sheet or a wire.