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Damper for furniture

A buffer and furniture technology, applied in the field of folding buffers, can solve the problems of unfavorable buffer strength, high material stress, loss, etc.

Active Publication Date: 2009-03-25
HETTICH ONI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is thus possible to achieve a different damping force when the piston moves in the opposite direction, the strength of the damping force can only be adjusted disadvantageously.
If the flow cross-section is too small, high material stresses and rapid losses result

Method used

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  • Damper for furniture
  • Damper for furniture
  • Damper for furniture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A pull-out damper 1 comprises a housing 2 and a cylindrical interior, in which a piston 4 is displaceably guided and held on a piston rod 3 . A sealing ring 5 , which bears against the inner wall of the housing 2 , is held in a groove on the outer circumference of the piston 4 .

[0032] A plate 6 is secured to one end of the piston rod 3 adjacent to the piston 4 . The above-mentioned piston 4 can move slightly axially on the piston rod 3 so that the distance between the plate 6 and the piston 4 can be changed.

[0033] An elastic foam material 7 is arranged adjacent to the plate 6 on the pressure-free side of the housing 2 and ensures a certain volume compensation when the piston rod 3 is drawn in and out of the housing. A fluid-filled interior 8 is provided on the opposite side of the piston 4 . Furthermore, the housing 2 is closed by a housing cover 9 . On the side opposite the cover 9 , the piston rod 3 is led out of the housing 2 in a sealing-tight manner via a ...

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PUM

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Abstract

The invention relates to a damper (1) for furniture, especially for hinges, comprising a housing (2) in which a piston (4) connected to a piston rod (3) is received in a mobile manner. When the piston (4) is displaced, a fluid flows inside the housing (2) through a flow channel (20) arranged on or in the piston (4), a different damping force being generated when the piston (4) is displaced in different directions. Parts of the cross-section of the flow channel (20) can be modified by displacing the piston (4) in relation to a plate (6), the plate (6) and / or the piston (4) comprising radially extending grooves forming at least part of the flow channel (20).

Description

technical field [0001] The invention relates to a damper for furniture, in particular for hinges, having a housing in which a piston connected to a piston rod is movably accommodated, wherein a fluid passes through the housing during movement of the piston A flow channel flows on or in the piston, wherein different damping forces result when the piston moves in different directions. Background technique [0002] There is a damper for furniture in which a microscopic hole is provided in the piston so that as the piston moves, a fluid can flow from one side of the piston to the other so that the movement of the piston passes through the Fluid is buffered. When producing such micro-holes, most of which are smaller than 0.15 mm, the disadvantage arises that the production process is time-consuming, since high precision is required and, moreover, the tool is subject to high wear and tear. Small dimensional deviations can make all the difference in cushioning power. Furthermore...

Claims

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Application Information

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IPC IPC(8): E05F5/10F16F9/00F16F9/516
CPCE05F5/006F16F9/003E05Y2201/21E05Y2600/53E05F5/10E05Y2900/20F16F9/516E05Y2201/256E05Y2201/264E05F5/02F16F9/00
Inventor C·罗梅尔曼W·贝克曼
Owner HETTICH ONI
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