CN214838085U

CN214838085U - Dust cover of shock absorber

Info

Publication number: CN214838085U
Application number: CN202121156596.6U
Authority: CN
Inventors: 蒋斌
Original assignee: Leacree Chengdu Co ltd
Current assignee: Leacree Chengdu Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-23
Anticipated expiration: 2031-05-27

Abstract

The utility model provides a shock absorber dust cover, which comprises a first cover cylinder and a second cover cylinder, wherein the first cover cylinder is hermetically connected with an outer cylinder of a shock absorber through a top cover, and the second cover cylinder is hermetically connected with a piston rod of the shock absorber; the lower end of the first cover cylinder is provided with a first annular structure which is tightened inwards, and the first annular structure is hermetically and slidably connected with the outer side wall of the second cover cylinder; the upper end of the second cover cylinder is provided with a second annular structure which expands outwards, and the second annular structure is in sealing and sliding fit with the inner side wall of the first cover cylinder. The utility model discloses a first annular structure and the second annular structure that set up form the twice between a first cover section of thick bamboo and a second cover section of thick bamboo and seal, and dustproof effectual, and can effectively reduce buffer spring's operating noise.

Description

Dust cover of shock absorber

Technical Field

The utility model relates to a bumper shock absorber technical field, concretely relates to bumper shock absorber dust cover.

Background

The working principle of the automobile shock absorber is that when a vehicle body and an axle generate relative motion by vibration, a piston in the shock absorber moves up and down, shock absorption oil in a shock absorber cavity flows into another cavity from one cavity through a pore repeatedly, and at the moment, damping force is formed on vibration by friction between a hole wall and oil and friction between oil molecules, so that the shock absorption purpose is realized.

The shock absorber has the functions of buffering the vibration of the ground to the vehicle and ensuring the running stability and comfort of the vehicle, so that the visible shock absorber is very important, and in order to ensure the long-term effective running of the shock absorber, the dust prevention of the shock absorber is very necessary, and a dust cover is required to be installed on the common shock absorber. However, most of dust covers used by the existing shock absorbers are of an open structure, a certain gap exists between the dust cover and an outer cylinder of the shock absorber, and dust or silt is deposited on an oil seal and a piston rod of the shock absorber through a lower opening of the dust cover in the structure, so that the piston rod and the oil seal are scratched, oil leakage is caused, and the service life of the shock absorber is shortened; in addition, in order to achieve the force buffering of the shock absorber, a buffer spring is sleeved on the piston rod outside the shell of the shock absorber, and the buffer spring can collide with the piston rod and the like in the working process, so that the noise is increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a bumper shock absorber dust cover to solve among the prior art the open structure dust cover that the bumper shock absorber used the dustproof effect not good and how to reduce the problem of buffer spring work noise.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a shock absorber dust cover comprising:

the first cover cylinder is hermetically connected with the outer cylinder of the shock absorber through a top cover; and

the second cover cylinder is connected with the piston rod of the shock absorber in a sealing mode;

the lower end of the first cover cylinder is provided with a first annular structure which is tightened inwards, and the first annular structure is hermetically and slidably connected with the outer side wall of the second cover cylinder; and the upper end of the second cover cylinder is provided with a second annular structure which expands outwards, and the second annular structure is in sealing and sliding fit with the inner side wall of the first cover cylinder.

Optionally, the first annular structure comprises a first annular clamping groove and a first elastic sealing ring embedded in the first annular clamping groove;

the first annular clamping groove is positioned on the inner side wall of the lower end of the first cover cylinder;

the first elastic sealing ring is attached to the outer side wall of the second cover cylinder in a sealing mode and is connected with the outer side wall of the second cover cylinder in a sliding mode.

Optionally, the second annular structure includes a second annular clamping groove and a second elastic sealing ring embedded in the second annular clamping groove;

the second annular clamping groove is positioned on the outer side wall of the upper end of the second cover cylinder;

the second elastic sealing ring is hermetically attached to the inner side wall of the first cover cylinder and is in sliding connection with the inner side wall of the first cover cylinder.

Optionally, the first elastic sealing ring and the second elastic sealing ring are longitudinally cut to form a corner, and a spring piece is arranged inside the corner.

Optionally, the first elastic sealing ring and the second elastic sealing ring are both wear-resistant rubber plates.

Optionally, the top cover is in threaded connection with the inner side wall of the first cover cylinder.

Optionally, a first threaded hole is formed in the top end of the side wall of the first cover cylinder, and a second threaded hole corresponding to the first threaded hole is formed in the top cover;

the first cover cylinder is mutually locked with the top cover through screws in threaded connection with the first threaded hole and the second threaded hole in sequence.

Optionally, the first threaded holes are provided in a plurality and uniformly distributed along the outer circumferential surface of the first cover cylinder.

Optionally, a plurality of first screws which are uniformly distributed are arranged on the upper end face of the top cover, and the first screws are connected with the outer cylinder of the shock absorber;

and a plurality of uniformly distributed second screw rods are arranged on the lower end surface of the second cover cylinder, and the second screw rods are connected with piston rods of the shock absorbers.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the first annular structure and the second annular structure form two seals between the first cover cylinder and the second cover cylinder, so that the dustproof effect is good, and the working noise of the buffer spring can be effectively reduced;

2. through the spring piece arranged in the corner, the first elastic sealing ring can be tightened inwards so as to press the outer side wall of the second cover cylinder to be in sealing fit with the second cover cylinder; the second elastic sealing ring can be expanded outwards so as to press the inner side wall of the first cover cylinder to be in sealing fit with the inner side wall of the first cover cylinder, namely the sealing effect can be effectively improved through the spring piece, and the dustproof capacity is further improved;

3. through the top cap of dismouting and first cover section of thick bamboo inside wall threaded connection, be favorable to changing first elastic sealing ring and second elastic sealing ring for the installation and the maintenance of whole dust cover are more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the partially cut three-dimensional structure of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C in fig. 2.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present invention provides a shock absorber dust cover, including:

a first cover cylinder 100 hermetically connected with the outer cylinder of the shock absorber through a top cover 200; and

the second cover cylinder 300 is connected with the piston rod of the shock absorber in a sealing mode;

the lower end of the first cover cylinder 100 is provided with a first annular structure 110 which is tightened inwards, and the first annular structure 110 is hermetically and slidably connected with the outer side wall of the second cover cylinder 300; the second cover cylinder 300 has a second annular structure 310 at the upper end thereof, and the second annular structure 310 is in sealing and sliding fit with the inner side wall of the first cover cylinder 100.

Specifically, referring to fig. 1 and 2, the second canister 300 is disposed inside the first canister 100 and has a lower end extending out of the first canister 100, and the piston rod sequentially passes through the first canister 100 and the second canister 300. In the action process of the piston rod, the second cover cylinder 300 is driven to slide on the inner side wall of the first cover cylinder 100, the first annular structure 110 and the second annular structure 310 form two seals between the first cover cylinder 100 and the second cover cylinder 300, so that dust or silt is blocked outside and cannot be stained on the piston rod, the service life of the shock absorber is prolonged, and the working noise of the buffer spring cannot be transmitted outside by the two cover cylinders. Namely, the first annular structure 110 and the second annular structure 310 are arranged to form two seals between the first cover cylinder 100 and the second cover cylinder 300, so that the dustproof effect is good, and the working noise of the buffer spring can be effectively reduced.

Referring to fig. 3, the first annular structure 110 includes a first annular clamping groove 111 and a first elastic sealing ring 112 embedded in the first annular clamping groove 111, the first annular clamping groove 111 is located on the inner side wall of the lower end of the first cover cylinder 100, and the first elastic sealing ring 112 is attached to the outer side wall of the second cover cylinder 300 in a sealing manner and is connected to the outer side wall of the second cover cylinder 300 in a sliding manner.

Referring to fig. 4, the second annular structure 310 includes a second annular clamping groove 311 and a second elastic sealing ring 312 embedded in the second annular clamping groove 311, the second annular clamping groove 311 is located on the outer side wall of the upper end of the second cover cylinder 300, and the second elastic sealing ring 312 is hermetically attached to the inner side wall of the first cover cylinder 100 and is slidably connected with the inner side wall of the first cover cylinder 100.

The first elastic sealing ring 112 and the second elastic sealing ring 312 are longitudinally cut to form a corner, and a spring piece (not shown) is arranged inside the corner. By means of the spring plate, the first elastic sealing ring 112 can be tightened inwards, so as to press the outer side wall of the second cover cylinder 300 to be in sealing fit therewith; the second elastic sealing ring 312 can be expanded outwards, so that the inner side wall of the first cover cylinder 100 is pressed to be in sealing fit with the inner side wall, the spring piece arranged can effectively improve the sealing effect, and the dustproof capacity is improved.

In the embodiment, the first elastic sealing ring 112 and the second elastic sealing ring 312 are both wear-resistant rubber plates, which is low in cost.

Referring to fig. 2, the top cap 200 is screw-coupled to the inner sidewall of the first casing 100. When the second can 300 is installed, the second can 300 is first placed in the first can 100, and then the top cap 200 is rotated to be screwed into the first can 100. That is, the top cover 200 is disassembled and assembled, so that the first elastic sealing ring 112 and the second elastic sealing ring 312 can be replaced conveniently, and the installation and maintenance of the whole dust cover are more convenient.

In the using process, in order to prevent the relative rotation between the first cover cylinder 100 and the top cover 200, a first threaded hole 120 is formed at the top end of the side wall of the first cover cylinder 100, a second threaded hole 210 corresponding to the first threaded hole 120 is formed in the top cover 200, and the first cover cylinder 100 and the top cover 200 are locked with each other through screws (not shown in the figure) which are sequentially in threaded connection with the first threaded hole 120 and the second threaded hole 210. In this embodiment, the first screw holes 120 are provided in plural and uniformly distributed along the outer circumferential surface of the first sleeve 100.

The upper end surface of the top cover 200 is provided with a plurality of first screw rods 220 which are uniformly distributed, and the first screw rods 220 are connected with the outer cylinder of the shock absorber; the lower end surface of the second cover cylinder 300 is provided with a plurality of second screws 320 which are uniformly distributed, and the second screws 320 are connected with the piston rod of the shock absorber.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. A shock absorber dust cover, comprising:

2. The shock absorber dust cover according to claim 1, wherein:

the first annular structure comprises a first annular clamping groove and a first elastic sealing ring embedded in the first annular clamping groove;

3. The shock absorber dust cover according to claim 2, wherein:

the second annular structure comprises a second annular clamping groove and a second elastic sealing ring embedded in the second annular clamping groove;

4. The dust cover of claim 3, wherein the first and second elastic sealing rings are longitudinally cut to have a corner, and a spring plate is disposed inside the corner.

5. The dust cover for shock absorbers according to claim 3 or 4, wherein the first elastic seal ring and the second elastic seal ring are both abrasion-resistant rubber plates.

6. The shock absorber dust cap according to claim 1, wherein said top cap is screwed with the inner side wall of said first barrel.

7. The shock absorber dust cover according to claim 6, wherein:

a first threaded hole is formed in the top end of the side wall of the first cover cylinder, and a second threaded hole corresponding to the first threaded hole is formed in the top cover;

8. The dust cover for shock absorbers according to claim 7, wherein the first threaded holes are provided in plural and evenly distributed along the outer circumferential surface of the first sleeve.

9. The dust cover for shock absorbers according to any one of claims 1, 6 to 8, wherein:

a plurality of first screw rods which are uniformly distributed are arranged on the upper end face of the top cover and are connected with the outer cylinder of the shock absorber;