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Damper for furniture

A technology of buffers and furniture, applied in the field of buffers for folding

Active Publication Date: 2012-11-14
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
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Effect test

Embodiment Construction

[0033] 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 .

[0034] 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.

[0035] 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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Abstract

The invention relates to a damper (1) for furniture, which comprises a housing (2) in which a piston (4) connected with a piston rod (3) is received in a mobile manner. When the piston (4) is displaced in the housing (2), a fluid flows through a flow channel (20) arranged on or in the piston (4). Meanwhile, different damping forces are generated when the piston (4) is displaced in different directions. Thus, parts of the cross section of the flow channel (20) can be modified by displacing the piston (4) relative to a plate (6). The plate and / or the piston is provided with radially extending grooves for forming at least one part of the flow channel (20). One side of the housing is provided with a movable balance piston. The balance piston is hermetically guided on the housing and the piston rod. The balance piston is provided with a sealing member. The sealing member abuts against the housing through an outer sealing lip and abuts against the piston rod through an inner sealing lip.

Description

technical field [0001] The invention relates to a damper for furniture, in particular for hinges. 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 micropores can be easily clogged by small particles. It is therefore not possible to use foam elements for volume compensation, since the small particles released by them could clog the system. Finally in the case of small micropores the wall is flushed so that the diameter increases ...

Claims

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Application Information

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