JP2011520539A - damper - Google Patents

Abstract

The furniture drawer guide damper (3) includes a main body rail and a traveling rail (1) and optionally a center rail (2) extending in a drawer manner. The damper (3) is fixed to the traveling rail (1) or the main body rail, is located on the moving path of the center rail (2) or the traveling rail (1), and is elastically deformed at least in the moving direction of the traveling rail (1). And a housing having a chamber that absorbs force in the pull-out direction. Effective damping is thus achieved.
[Selection] Figure 1

Description

  The present invention relates to a damper for a furniture drawer guide comprising a main body rail and a running rail and optionally a pull-out extending center rail.

  Furniture drawer guides often include an automatic closure device in the form of an energy storage device that tensions when the furniture drawer is pulled out and releases the stored energy when the furniture drawer is pushed back into the furniture body. . As a result of the energy storage device energy being released in the closing direction, the furniture drawer is reliably returned to its closed position regardless of any external operating force, and the construction of an automatic closing device with a damper is known. This damper is used to substantially prevent excessive impact of the running rail against the limit stop and substantially reduce the impact noise.

  The present invention is based on the object of providing an inexpensive damper that is excellent in durability and does not depend on the configuration of the automatic closing device.

  According to the present invention, the object includes a housing in which a damper is fixed to a traveling rail or a main body rail, and is disposed on a moving path of the center rail or the traveling rail, and can be elastically deformed at least in the moving direction of the traveling rail. This is achieved in that it comprises a chamber that absorbs the force in the withdrawal direction.

  The damper configured as described above, for example, the end position damper, can be manufactured at a very low cost and practically has no malfunction. When the running rail enters, the kinetic energy is absorbed by compressing the gaseous medium disposed in the chamber. This also leads to a reduction in the speed of the traveling rail moving backwards and a reduction in the impact force at the limit stop, so that a considerable reduction in noise is possible.

  In a preferred embodiment of the invention, the housing is made of plastic.

  One of ordinary skill in the art can utilize a number of suitable materials that ensure the longevity of the damper. The gaseous medium is compressed in the closed position and is therefore under higher pressure than when the damper is relaxed. As the furniture drawer moves away from this closed position, the compressed gaseous medium can again relax, thereby returning the housing to its original shape.

  Also, since the function of the damper according to the invention is determined solely solely by the compression and decompression of the gaseous medium, it is not very important even in durability that the housing material loses elasticity.

  A particularly suitable embodiment is to configure the housing as a bellows.

  Thereby, coupled with the strength and stability against buckling in the direction perpendicular to the moving direction, high elasticity is achieved in the moving direction of the traveling rail.

  The chamber can be mainly filled with any non-volatile gaseous medium. It is particularly useful to fill the chamber with air.

  Further features of the invention are the subject of further dependent claims.

  Embodiments of the invention are illustrated in the accompanying drawings and are described in more detail below.

The partial cross-section perspective view of the furniture drawer guide in which the damper concerning the present invention is in a neutral position is shown. FIG. 2 shows a partial cross-sectional perspective view of the furniture drawer guide of FIG. 1 with the damper partially compressed. FIG. 3 shows a partial cross-sectional perspective view of the furniture drawer guide of FIGS. 1 and 2 with the damper in a fully compressed state. The partial cross-section perspective view of the damper fixed to the edge part plug of a running rail is shown.

  1 to 3, reference numeral 1 denotes a running rail of the furniture drawer guide that is movable in the longitudinal direction with respect to the center rail 2 that extends in the direction of the double arrow A.

  Since the center rail 2 is movable in a known manner relative to the fixed body rail, details are not shown.

  In order to facilitate the orientation, it is pointed out that the running rail 1 holding the furniture drawer is pulled out from the furniture body to the left side in the position shown in FIGS. It is necessary to keep.

  The damper 3 according to the present invention has a front end coupled to the traveling rail 1. The damper 3 exists in the moving path of the center rail 2 and comes into contact with the front side 2a of the center rail 2 during the insertion of the traveling rail 1 corresponding to the pushing-in of the furniture drawer. The damper 3 is completely moved away from the center rail 2 when the running rail 1 is pulled out corresponding to pulling out the furniture drawer from the furniture body.

  Alternatively, in the case of a furniture drawer that does not have a drawer-type center rail 2 that extends with a pull-in mechanism, the damper 3 that is used as the end position damper contacts the front side of the main body rail.

  The damper 3 comprises a housing 4 configured in the form of a bellows, which is completely sealed to the outside and forms a chamber filled with a gaseous medium. Accordingly, the bellows 4 is configured as a hollow body and is completely sealed against the outside. A gaseous medium, preferably air, is placed inside the hollow body.

  The bellows 4 is made of plastic.

  In particular, as shown in FIG. 4, the bellows 4 is fixed to an end plug 5 that can be inserted into the front end of the traveling rail 1. The bellows 4 is fixed to the end plug 5 by a bolt 6 penetrating the hole of the end plug 5 in the same manner as the hole of the pin 7 attached to the end surface of the bellows 4.

  When the distance between the front end 2a of the center rail 2 and the opposing surface side 4a of the bellows 4 decreases during the retreat of the traveling rail 1, the bellows 4 contacts the front side 2a of the center rail 2. When the two rails 1 and 2 are pushed further together, they result in an axial reduction of the bellows, with compression of the gaseous medium arranged inside the bellows 4. Thus, the approach speed of the traveling rail 1 decreases, and noise when the traveling rail 1 comes into contact with an end stop or the like is minimized.

  For example, in the indented state corresponding to the position of the closed drawer, the bellows 4 is maximally compressed as shown in the illustration of FIG. 3, and the gaseous medium therein is maximally compressed, thus the highest achievable internal pressure. Is in a state. When the drawer is opened again, it means that the traveling rail 1 moves to the left with respect to the center rail 2, and the gaseous medium relaxes again inside the bellows 4, thus causing the bellows 4 to move as shown in FIG. It can be restored to its original form again.

  Therefore, the damping effect of the damper 3 is virtually exclusively the result of the described structure, even if a specific deformation force is applied for the compression of the bellows 4 and the respective restoring force is exerted when the bellows is released. It is determined only by the compression of the gaseous medium in the bellows 4. The last shown deformation force and restoring force are not so important for the function, and the damper 3 maintains its function even when the deforming force and restoring force acting on the bellows 4 finally approaches zero.

  In the exemplary embodiment, the cooperation between the running rail 1 and the center rail 2 of the furniture drawer guide has been described. The damper 3 can obviously also be used advantageously when the center rail 2 is not present and the running rail 1 is guided directly on the fixed body rail. In that case, the damper 3 can alternatively be fixed to the rear end region of the main body rail and pressurized by the rear end of the traveling rail 1.

  It is clear that the bellows 4 can be made from a self-shrinking elastic material and a virtually incompressible medium can be used as the filler.

  In order to achieve the damping effect, it is further possible to fill the bellows 4 with an open cell elastic material.

  Furthermore, any form of mechanical spring can be used to achieve the damping effect.

  As a coupling means between the end plug 5 and the damper 3, coupling by an interlock having an arbitrary shape, coupling by friction, or coupling by a material is possible.

  In a further embodiment, the end plug 5 and the damper 3 are manufactured integrally in a two-part injection molding process. In this way, the bellows 4 can be made of highly elastic plastic, and the end plug can be made of high hardness plastic.

  In a further embodiment, the housing is configured as a sealed chamber and the housing is made of, for example, a self-collecting elastic material. In this embodiment, the housing or bellows 4 can be filled with an incompressible or substantially incompressible medium. Alternatively, the housing or bellows 4 can be filled with an open cell elastic material. The bellows 4 is suitably coupled to the end plug 4 by interlocking, frictional or material means. Furthermore, the bellows can be coupled to the end plug 5 of the running rail 1. It is particularly advantageous if the bellows 4 is constructed integrally. Further, the bellows 4 and the end plug 5 can be integrally formed as a unit. It is also possible to apply a force by means of a mechanical spring.

Claims (15)

In a damper (3) for a furniture drawer guide comprising a body rail and a running rail (1) and optionally a center rail (2) extending in a drawer-type manner,
The damper (3) includes a housing, the housing is fixed to the traveling rail (1) or the main body rail, and the housing is disposed on a moving path of the center rail (2) or the traveling rail (1). The damper is characterized in that the housing can be elastically deformed at least in the moving direction of the traveling rail (1), and the housing includes a chamber for absorbing a force in a pull-out direction.   The damper according to claim 1, wherein the housing is made of plastic.   Damper according to claim 1 or 2, characterized in that the housing is configured as a bellows (4).   The damper according to claim 1, wherein the housing is configured as a sealed chamber.   The damper according to claim 1 or 2, wherein the housing is made of a self-shrinking elastic material.   Damper according to any one of the preceding claims, characterized in that the cross-section of the bellows (4) is rectangular, preferably square.   The damper according to any one of claims 1 to 6, characterized in that the housing or bellows (4) is filled with air.   Damper according to any one of the preceding claims, characterized in that the housing or bellows (4) is filled with an incompressible or substantially incompressible material.   The damper according to any one of the preceding claims, characterized in that the housing or bellows (4) is filled with an open cell elastic material.   Damper according to any one of the preceding claims, characterized in that the bellows (4) is connected to the end plug (5) by frictional means, interlocking means or material means. .   11. A damper according to any one of the preceding claims, characterized in that the bellows (4) is coupled with an end plug (5) of the running rail (1).   The damper according to any one of claims 1 to 11, characterized in that the bellows (4) is made in one piece.   Damper according to any one of the preceding claims, characterized in that the bellows (4) and the end plug (5) are made integrally as a unit.   The damper according to claim 1, wherein a force is applied by a mechanical spring.   The bellows (4) is connected to the end plug (5) by a bolt (6), and the bolt (6) also penetrates the hole of the pin (7) attached to the end surface of the bellows (4). The damper according to any one of the preceding claims, characterized in that it passes through a hole in the end plug (5).

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