CN201507596U

CN201507596U - Improved structure of damper for furniture with reset function

Info

Publication number: CN201507596U
Application number: CN2009200598310U
Authority: CN
Inventors: 唐善培
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-06-16
Anticipated expiration: 2019-07-06

Abstract

The utility model discloses an improved structure of a damper for furniture, comprising a cylinder body, a piston rod, a piston, a guide seat, a guide seat seal ring and a limit step provided with a liquid through hole, wherein the limit step partitions the cylinder body into a left chamber and a right chamber; a spring sleeved on the piston rod and a sliding seal ring are arranged in the right chamber of the cylinder body; and the spring is arranged between the sliding seal ring and the guide seat seal ring. A seal ring is movably sleeved on the piston, limit walls between which the space is larger than the thickness of the seal ring are respectively arranged in the front and back of the seal ring, a liquid flow gap is arranged between the seal ring and the outer wall of the piston, and a rear limit wall of the piston is provided with a channel which is communicated with the liquid flow gap. After improvement, the damper utilizes the spring to replace the original sponge body as the reset power source and can maintain elastic force for a long time, the liquid is not contaminated by the air, and the movement of the piston rod becomes very stable and reliable. In addition, the cylinder body makes no sound when the piston rod expands or contracts.

Description

A kind of structure-improved that has the reset function domestic damper

Technical field:

The utility model relates to a kind of structure-improved of domestic damper.

Background technique:

The damper that has reset function on the market, its homing action is to realize by the foam body of outlet end, be that piston rod is when compressing into cylinder body, enter the body of rod in the cylinder body partial volume that accounts for, cause the liquid in the cylinder body to be pressed towards foam body, the foam body pressurized is shunk, after pressure disappears, under the recovery of shape effect of foam body, piston rod is pushed out and resets.But owing to leave air all the time in the foam body body, pressurized can discharge when shrinking, and contaminated liquid makes to occur two kinds of different media in the cylinder body, jumping phenomena can appear in MEDIA FLOW piston rod when piston like this, it is not steady that piston rod slides, use a period of time simultaneously after, the elasticity of foam body can die down, influence reset function, owing to have air in the foam body, when foam body is flexible, can send sound.

Summary of the invention:

The purpose of this utility model is in order to overcome the shortcoming of above-mentioned prior art, a kind of slide steady, the stable domestic damper structure of reseting performance to be provided.

For achieving the above object, the technological scheme that the utility model provides is: the structure-improved of domestic damper, include cylinder body, piston rod, piston, guide holder, guide holder seal ring and be provided with the limited step of liquid-through hole, limited step is divided into left and right sides chamber to cylinder body, be provided with spring and the sliding ring that is placed on the piston rod in the right chamber of cylinder body, spring places between sliding ring and the guide holder seal ring.

Activity is with seal ring on piston, is respectively arranged with the big limited wall of gap ratio seal ring thickness in the front and back of seal ring, leaves the liquid air crack between seal ring and the piston outer wall, has and cross the runner that the liquid air crack communicates on the back limited wall of piston.

Damper is after above-mentioned improvement, utilize spring to replace original foam body, can keep elastic force for a long time, and atmospheric pollution liquid can not occur as resetting power source, make piston rod movement become very steadily reliable, can not send the sound in the cylinder body when piston rod is flexible in addition.

Description of drawings:

Piston rod was compressed into the structural drawing of cylinder body when Fig. 1 was the utility model damper generation damping function;

Fig. 2 be the utility model damper when resetting piston rod ejected the structural representation that resets by spring;

Fig. 3 is the utility model piston rod structure of piston schematic representation when compressing into cylinder body;

Fig. 4 is that the utility model piston rod is pushed out cylinder body structure of piston schematic representation when resetting.

Embodiment:

Now elaborate the utility model in conjunction with the accompanying drawings:

This domestic damper includes cylinder body 1, piston rod 2, piston 3, guide holder 4, guide holder seal ring 5 and is positioned at the limited step 6 of piston rod 2 insertion ends, limited step 6 is provided with liquid-through hole 61, and two chamber 1a, 1b about limited step 6 is divided into cylinder body 1, be provided with the spring 7 and the sliding ring 8 that are placed on the piston rod 2 in right chamber 1b, spring 7 places between sliding ring 8 and the guide holder seal ring 5.

Activity is with seal ring 9 on piston 3, be respectively arranged with the big limited wall of gap ratio seal ring thickness 101,102 in the front and back of seal ring 9, leave liquid air crack 11 between seal ring 9 and piston 3 outer walls, had and crossed the runner 12 that liquid air crack 11 communicates on the back limited wall 102 of piston 3.

When piston rod 2 advances in the cylinder body 1, seal ring 9 on the piston 3 relies on front limit wall 101, liquid air crack 11 excessively between seal ring 9 and the piston 3 is ineffective, liquid can only flow through through the gap between seal ring 9 and cylinder body 1 inwall, its damping function of damper, behind the pressure on the cancellation piston rod 2, under the effect of spring 7, piston rod 2 is ejected cylinder body 1 and resets, at this moment seal ring 9 relies on back limited wall 102, cross liquid air crack 11 and runner 12 conductings, fluid flow increases, thereby accelerates the reset speed of piston rod 2.

The above-mentioned description of this damper device being carried out with reference to embodiment is illustrative rather than determinate, therefore in the variation and the modification that do not break away under the model utility general plotting, should belong within the protection domain of the present utility model.

Claims

1. structure-improved that has the reset function domestic damper, include cylinder body (1), piston rod (2), piston (3), guide holder (4), guide holder seal ring (5) and be provided with the limited step (6) of liquid-through hole (61), limited step (6) is divided into left and right sides chamber (1a, 1b) to cylinder body (1), it is characterized in that: from left to right be disposed with the sliding ring (8) and the spring (7) that are placed on the piston rod (2) in the right chamber (1b) of cylinder body (1), spring (7) places between sliding ring (8) and the guide holder seal ring (5).

2. a kind of structure-improved that has the reset function domestic damper according to claim 1, it is characterized in that: be with seal ring (9) in piston (3) activity of going up, be respectively arranged with the big limited wall (101,102) of gap ratio seal ring (9) thickness in the front and back of seal ring (9), leave liquid air crack (11) between seal ring (9) and piston (3) outer wall, had and crossed the runner (12) that liquid air crack (11) communicates on the back limited wall (102) of piston (3).