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Damper and sliding door or drawer adopting same

A damper and damping force technology, applied in the field of dampers, can solve problems such as loss of damping, failure of dampers, and easy damage of damper mechanisms

Inactive Publication Date: 2016-08-17
江阴诺明精密五金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The damper disclosed in the Chinese patent document CN204061697U includes: an outer tube and a piston rod arranged in the outer tube, the piston rod is provided with a piston, and the piston is provided with an O-ring or a valve plate for controlling the opening of the flow channel; During use, if the piston rod encounters a momentary large axial impact force, the O-ring or the valve plate is prone to damage, resulting in the failure of the damper
[0003] The basic flow channel in the piston assembly of the existing damper is the flow gap left between the outer tube and the piston. The disadvantage of this design is that the piston can move radially during operation, resulting in unstable damping force
In addition, when the existing damper is impacted by a large external force, the internal mechanism of the damper is easily damaged due to the instantaneous increase of the pressure in the extrusion chamber (Cavity B) squeezed by the piston, resulting in loss of damping, and the outer tube is easy to burst
As a result, the drawer or sliding door suddenly slows down during the closing process (the sliding door appears to jump the track), so that the drawer or sliding door cannot be closed smoothly when it is reset.

Method used

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  • Damper and sliding door or drawer adopting same
  • Damper and sliding door or drawer adopting same
  • Damper and sliding door or drawer adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 , the damper of the present embodiment includes: an outer tube 9 and a piston rod 2 arranged in the outer tube 9, a piston 10 is arranged on the piston rod 2, and the end of the outer tube 9 is formed when the outer tube is once injection molded Close, or use a T-shaped plug 13 to close the process hole produced at the end of the outer tube 9 during one-time injection molding; in the front end tube of the outer tube 9 and on the piston rod 2, set it sequentially from front to back There is a front end cover 3 and a Y-shaped sealing ring 6 elastically matched with the front end cover 3 . The front end cover 3 is suitable for closing the front end of the outer tube 9 , and the return spring 4 and the guide sleeve 5 sleeved on the piston rod 2 are arranged between the front end cover 3 and the Y-shaped sealing ring 6 .

[0036] The inner wall of the outer tube (9) is provided with a limit surface that is slidingly fitted with the piston 10 and used to lim...

Embodiment 2

[0042] On the basis of Embodiment 1, this embodiment has the following modifications:

[0043] Such as Figure 8 and 8-1 , the center of the rear end surface of the front end cylinder 101 of the piston 10 protrudes toward the rear side, so that there is a gap between the front side of the annular seal 11 and the rear port of the flow passage 12, so that the front end cylinder Between 101 and the annular seal 11 is formed a variable flow channel 14 whose flow area can be changed under the action of an external force.

[0044] Such as Figure 7 , 8 and 8-1, the rear side outer edge of the front cylinder 101 of the piston 10 is provided with a gap 100; when the piston moves forward, the plastic sheet fits the piston base, and that gap cannot be sealed, thereby forming a The overflow channel, the piston is always in a slippery state with the outer tube, this design can get a very smooth damping force.

[0045] or, as Figure 9 and 9-1 , a through hole 110 is provided on the...

Embodiment 3

[0048] On the basis of Embodiment 1, this embodiment has the following modifications:

[0049] Such as Figure 10 and 10-1 , the outer wall of the front cylinder 101 of the piston 10 is provided with axially distributed outer flow passages 17 .

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Abstract

The invention provides a damper and a sliding door or drawer adopting the same. The damper comprises an outer tube and a piston rod arranged in the outer tube, a piston is arranged on the piston rod, and the inner wall of the outer tube is provided with multiple limiting faces and / or multiple convex ribs which are matched with the piston in a sliding mode and used for limiting radial displacement of the piston; the limiting faces are distributed in a centrally symmetric mode, and / or the convex ribs are distributed in a centrally symmetric mode. An inclined groove which is axially distributed is formed in the portion, on the rear side of a Y-shaped seal ring, of the inner wall of the outer tube, the section areas of the inclined groove are gradually decreased from front to back, and a damping increasing segment is formed; a damping release inclined groove which is axially distributed is formed on the portion, on the rear side of a damping force stable segment, of the inner wall of the outer tube, the section areas of the damping release inclined groove are gradually increased from front to back, and a damping force release segment is formed. When the damper is subjected to larger instantaneous axial impact force, the damping force is stable and good in uniformity, and the outer tube is not prone to burst.

Description

technical field [0001] The invention relates to the technical field of dampers, in particular to a damper and a sliding door or a drawer using the damper. Background technique [0002] The damper disclosed in the Chinese patent document CN204061697U includes: an outer tube and a piston rod arranged in the outer tube, the piston rod is provided with a piston, and the piston is provided with an O-ring or a valve plate for controlling the opening of the overflow channel; During use, if the piston rod encounters a momentary large axial impact force, the O-ring or the valve plate is easily damaged, resulting in failure of the damper. [0003] The basic flow channel in the piston assembly of the existing damper is the flow gap left between the outer tube and the piston. The disadvantage of this design is that the piston can move radially during operation, resulting in unstable damping force . In addition, when the existing damper is impacted by a large external force, the intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/19F16F9/32F16F9/48E05F3/10A47B88/04A47B88/00
CPCF16F9/19A47B88/00A47B2210/0091E05F3/108F16F9/3214F16F9/3235F16F9/48
Inventor 杜成华
Owner 江阴诺明精密五金有限公司