TWM577401U - Dustproof cover for shock absorber and shock absorber comprising the same - Google Patents

Abstract

The present invention relates to a dustproof cover for a shock absorber and a shock absorber including the same, the shock absorber comprising an inner tube and an outer tube which are sleeved, and the dust cover comprises a body and at least two elastic members. The body includes a first ring wall and a second ring wall. The first ring wall is sleeved on the inner tube, and the second ring wall is inserted into the outer tube. The at least two elastic members are disposed on the first annular wall along a circumferential direction of the first annular wall. The shock absorber includes a dust cover as described above, and the shock absorber further includes an outer tube, a damper tube and an inner tube.

Description

Dust cover for shock absorber and shock absorber including the same

This creation is related to a dust cover for a shock absorber and a shock absorber including the same.

Pressing, a dust cover is arranged between the inner tube and the outer tube of the general shock absorber, so that the gap between the inner tube and the outer tube can be sealed by the dust cover to prevent foreign matter such as sand and water from entering, and the dust cover is conventionally known. In order to facilitate the installation, a plurality of exhaust grooves are arranged on the outer surface of the ring portion of the inner peripheral wall of the outer tube in the radial direction of the dust cover, so that the dust cover can be effectively exhausted and sealed and installed on the inner tube and the outer tube. Between the tubes.

However, the conventional dust cover has the following disadvantages. Since the dust cover is provided with a plurality of exhaust grooves on the outer surface of the ring portion in the outer tube, it is still easy to make foreign matter such as sand and water inadvertently pass through the exhaust grooves. In addition, after the dust cover is sleeved on the ring portion of the outer tube for a period of time, it is easy to lose elasticity due to aging of the rubber, and the dust cover is sleeved on the ring portion of the outer tube, that is, it cannot be stably sleeved on the inner tube. The foreign matter such as sand and water enters from the gap between the ring portion and the inner tube of the outer tube, and affects the smooth operation and the life of the shock absorber, and there is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive shock cover for a shock absorber and a shock absorber including the same to solve the above problems.

The main purpose of the present invention is to provide a dustproof cover for a shock absorber and a shock absorber including the same, which can be smoothly installed on the shock absorber to prevent foreign matter from entering between the inner tube and the outer tube, and the dustproof The first ring wall of the cover can be stably sleeved on the outer peripheral wall of the inner tube for a long time to improve the durability of the dust cover and the shock absorber.

In order to achieve the above object, the present invention provides a dustproof cover for a shock absorber, which comprises an inner tube and an outer tube which are sleeved, and the dust cover comprises a body and at least two elastic members. The body includes a first ring wall and a second ring wall. The first ring wall is sleeved on the inner tube, and the second ring wall is inserted into the outer tube. The at least two elastic members are disposed on the first annular wall along a circumferential direction of the first annular wall.

In order to achieve the above object, the present invention further provides a shock absorber comprising a dust cover as described above, the shock absorber further comprising an outer tube, a damper tube and an inner tube. The outer tube includes a bottom wall at one of the opposite ends and a first opening. The damper tube is disposed in the outer tube and has one end fixed to the bottom wall, and the damper tube is provided with a piston member away from one end of the bottom wall. The inner tube is slidably inserted into the first opening of the outer tube and slidably sleeved on the damper tube. The inner tube is provided with a stop portion adjacent to one end of the bottom wall, and the damper tube is disposed at the damper portion. And the piston member is blocked by the stop portion inside the inner tube.

The structural features of the present invention and the intended effects thereof will be described below by way of a preferred embodiment, but are not intended to limit the scope of the present invention.

Please refer to FIG. 1 to FIG. 6 , which show a preferred embodiment of the present invention. The shock absorber 9 of the present invention is provided with a dust cover, and the shock absorber 9 includes an inner tube 91 and an outer tube 92 which are sleeved. The dust cover includes a body 2 and at least two elastic members 3.

The main body 2 includes a first ring wall 21 and a second ring wall 22 . The first ring wall 21 is sleeved on the inner tube 91 , and the second ring wall 22 is inserted into the outer tube 92 to prevent the The slit between the inner tube 91 and the outer tube 92 is entered by foreign matter.

The at least two elastic members 3 are disposed on the first ring wall 21 along the circumferential direction of the first ring wall 21. In this embodiment, there are only two elastic members 3, and the second elastic member 3, when the first ring wall When the 21 is deformed radially outward or loses elasticity due to aging of the material, the two elastic members 3 can tighten the first ring wall 21 radially inward to prevent foreign matter from the first ring wall 21 and the inner tube. Enter between 91. In addition, when the first ring wall 21 is located at the upper end and the elastic member 3 is deformed radially outward, the elastic member 3 located at the lower end of the first ring wall 21 can still tighten the first ring wall. At the lower end of 21, it is possible to achieve a dual function to prevent foreign matter from entering.

Preferably, the body 2 further includes a cover portion 23 extending radially between the first ring wall 21 and the second ring wall 22. The cover portion 23 is disposed on the outer tube 92 toward the inner tube. The end face of 91 prevents foreign matter from entering from the gap between the second ring wall 22 and the outer tube 92. In the embodiment, the cover portion 23, the first ring wall 21 and the second ring wall 22 are integrally formed for convenient manufacture.

In the present embodiment, the thickness of the first annular wall 21 is equal to the thickness of the second annular wall 22. The radial dimension of the first annular wall 21 is smaller than the radial dimension of the second annular wall 22 to match the radial dimension of the inner tube 91 and the outer tube 92.

Further, each of the elastic members 3 is an annular stretch elastic member 3 such that the first ring wall 21 has a tendency to be radially inwardly contracted. Preferably, the elastic member 3 is an annular metal tension spring to have a strong structural strength, so that the elastic member 3 is less likely to be elastically fatigued.

In the embodiment, the outer peripheral wall of the first ring wall 21 is provided with at least two ring grooves 24 for the at least two elastic members 3 to be provided for mounting the two elastic members 3. Preferably, the at least two ring grooves 24 are spaced apart to prevent the two elastic members 3 from interfering with each other to affect the elastic restoring force.

It is to be noted that the inner peripheral wall of the first annular wall 21 is provided with a first concave-convex structure 211, and the outer peripheral wall of the second annular wall 22 is provided with a second concave-convex structure 221, and the first concave-convex structure 211 and the The second concave-convex structure 221 abuts against the outer peripheral wall of the inner tube 91 and the inner peripheral wall of the outer tube 92 to increase the frictional force to prevent the dust cover from sliding freely relative to the shock absorber 9.

The present invention further provides a shock absorber 9 comprising a dust cover as described above, the shock absorber 9 further comprising an outer tube 92, a damper tube 93 and an inner tube 91.

The outer tube 92 includes a bottom wall 921 and a first opening 922 at opposite ends. The damper tube 93 is disposed in the outer tube 92 and has one end fixed to the bottom wall 921. The damper tube 93 is provided with a piston member 931 at one end of the bottom wall 921. The inner tube 91 is slidably inserted into the first opening 922 of the outer tube 92 and slidably sleeved on the damper tube 93. The inner tube 91 is provided with a stop portion 911 adjacent to one end of the bottom wall 921. The tube 93 is disposed through the blocking portion 911 and the piston member 931 is blocked by the blocking portion 911 inside the inner tube 91. The shock cover 9 is installed in the shock absorber 9 to prevent foreign matter from entering the gap between the inner tube 91 and the outer tube 92, thereby causing the shock absorber 9 to be damaged. Therefore, the shock absorber 9 can have a comparative Good durability.

Further, the outer tube 92 is provided with a flared portion 923 adjacent to one end of the inner tube 91. The second annular wall 22 is inserted into the flared portion 923 and the outer peripheral wall of the second annular wall 22 abuts against the outer ring wall The inner peripheral wall of the flared section 923. The shock absorber 9 further includes a Palin 94. The Palin 94 is accommodated in a step 924 of the flared section 923. The inner tube 91 is disposed through the Palin 94 to provide the inner tube 91. Radial support force.

In summary, the dust cover for the shock absorber and the shock absorber including the same can be smoothly installed on the shock absorber to prevent foreign matter from entering between the inner tube and the outer tube, and the dust cover is A ring wall can be stably sleeved on the outer peripheral wall of the inner tube for a long time to improve the durability of the dust cover and the shock absorber.

2‧‧‧ Ontology

3‧‧‧Flexible parts

9‧‧‧ Shock absorbers

21‧‧‧ First ring wall

22‧‧‧ second ring wall

23‧‧‧ 盖部

24‧‧‧ ring groove

211‧‧‧First concave and convex structure

221‧‧‧second concave structure

91‧‧‧Inside

92‧‧‧External management

93‧‧‧damper tube

94 ‧ ‧ Palin

911‧‧ §

921‧‧‧ bottom wall

922‧‧‧ first opening

923‧‧‧ flare section

924‧‧‧

931‧‧‧ piston parts

1 is a perspective view of a preferred embodiment of the present invention. 2 is a partial perspective view of a preferred embodiment of the present invention. 3 is a partial view of a preferred embodiment of the present invention. 4 is a perspective enlarged view of the dust cover of the preferred embodiment of the present invention. Figure 5 is a partial cross-sectional view of a preferred embodiment of the present invention. Figure 6 is a cross-sectional view of another preferred embodiment of the present invention.

Claims (14)

A dust cover for a shock absorber, the shock absorber comprising an inner tube and an outer tube, comprising: a body comprising a first ring wall and a second ring wall, the first ring wall sleeve In the inner tube, the second annular wall is inserted into the outer tube; at least two elastic members are disposed on the first annular wall along a circumferential direction of the first annular wall. The dust cover for a shock absorber according to claim 1, wherein the body further comprises a cover portion protruding radially outwardly between the first ring wall and the second ring wall, the cover portion being covered The outer tube faces the end surface of the inner tube. The dust cover for a shock absorber according to claim 2, wherein the cover portion, the first ring wall and the second ring wall are integrally formed. A dust cover for a shock absorber according to claim 1, wherein the thickness of the first annular wall is equal to the thickness of the second annular wall. The dust cover for a shock absorber according to claim 4, wherein a radial dimension of the first annular wall is smaller than a radial dimension of the second annular wall. The dust cover for a shock absorber according to claim 1, wherein each of the elastic members is an annular tensile elastic member, so that the first annular wall has a tendency to radially inwardly contract. A dust cover for a shock absorber according to claim 6, wherein the elastic member is a ring-shaped metal tension spring. The dust cover for a shock absorber according to claim 6, wherein the outer peripheral wall of the first ring wall is provided with at least two ring grooves for the at least two elastic members. The dust cover for a shock absorber according to claim 8, wherein the at least two ring grooves are spaced apart. The dust cover for a shock absorber according to claim 1, wherein the inner circumferential wall of the first annular wall is provided with a first concave-convex structure. The dust cover for a shock absorber according to claim 1, wherein the outer peripheral wall of the second annular wall is provided with a second concave-convex structure. A shock absorber for use in a shock absorber for a shock absorber according to any one of claims 1 to 11, the shock absorber further comprising: an outer tube including a bottom wall at one of the opposite ends and a first a damper tube is disposed in the outer tube and has one end fixed to the bottom wall, the damper tube is provided with a piston member away from one end of the bottom wall; and an inner tube slidably inserted into the outer tube Opening and slidably sleeved on the damper tube, the inner tube is provided with a stop portion adjacent to one end of the bottom wall, the damper tube is disposed at the damper portion, and the piston member is blocked by the stop portion at the inner tube internal. The shock absorber of claim 12, wherein the outer tube is provided with a flared section adjacent one end of the inner tube, the second annular wall is inserted into the flared section and the outer peripheral wall of the second annular wall is abutted In the inner peripheral wall of the flared section. The shock absorber of claim 12, further comprising a Palin, the Palin being disposed in a step of the flared section, the inner tube being threaded through the Palin.