CN214424977U

CN214424977U - Automobile shock absorber

Info

Publication number: CN214424977U
Application number: CN202023337838.XU
Authority: CN
Inventors: 潘建武; 尢衍兵; 余列勇; 潘建
Original assignee: Wenzhou Huayang Metalworking Machinery Co ltd
Current assignee: Wenzhou Huayang Metalworking Machinery Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-19
Anticipated expiration: 2030-12-31

Abstract

An automobile shock absorber comprises a piston rod, a dust cover and a working cylinder barrel, wherein one end of the piston rod extends into the working cylinder barrel, the dust cover is connected with the other end of the piston rod, the opening direction of the dust cover is opposite to the working cylinder barrel, a fixed sleeve, a guide seat, a restoring valve system and an air bag are arranged in the working cylinder barrel, the fixed sleeve is arranged at the joint of the working cylinder barrel and the piston rod, a concave edge is arranged in a through hole of the fixed sleeve, the guide seat is arranged below the fixed sleeve, the joint of the guide seat and the piston rod is provided with the fixed sleeve, the fixed sleeve is provided with a shell and a dust ring, the dust ring surrounds the piston rod, the shell covers the dust ring through the guide seat, the restoring valve system is arranged in the working cylinder barrel, the restoring valve system divides the working cylinder barrel into a first cavity and a second cavity, and the air bag is arranged in the second cavity, the performance of the damper is enhanced from the structural member.

Description

Automobile shock absorber

Technical Field

The utility model relates to a technical field of automobile shock absorber, concretely relates to automobile shock absorber.

Background

With the continuous development and progress of the economic society, the requirements of consumers on vehicles are higher and higher, and the requirements of the consumers on the driving and riding comfort are higher and higher in addition to the original performance requirements of the consumers in both passenger vehicles and commercial vehicles. The magneto-rheological shock absorber has the advantages of high response speed, large damping force dynamic adjustment range, low energy consumption and the like as a novel intelligent shock absorber, can effectively attenuate the transmission of the vibration between wheels and a road surface on a vehicle when applied to a vehicle shock absorption system, improves the comfort of riding and driving of the vehicle, and is more and more widely applied to the field of vehicle shock absorbers.

The improvement is carried out on the foundation structure of the existing shock absorber, the sealing problem of the existing shock absorber is improved, and the technical scheme of the horizontal placement of the shock absorber is improved.

Disclosure of Invention

In view of this, the utility model provides an automobile shock absorber.

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

an automobile shock absorber comprises a piston rod, a dust cover and a working cylinder barrel, wherein one end of the piston rod extends into the working cylinder barrel, the dust cover is connected with the other end of the piston rod, the opening direction of the dust cover is opposite to the working cylinder barrel, a fixed sleeve, a guide seat, a recovery valve system and an air bag are arranged in the working cylinder barrel, the fixed sleeve is arranged at the joint of the working cylinder barrel and the piston rod, the through hole of the fixed sleeve is internally provided with a concave edge, the guide seat is arranged below the fixed sleeve, the fixed sleeve is arranged at the joint of the guide seat and the piston rod, the fixed sleeve is provided with a shell and a dustproof ring, the dustproof ring surrounds the piston rod, the shell covers the dustproof ring through the guide seat, the reset valve is arranged in the working cylinder barrel, the reset valve divides the working cylinder barrel into a first chamber and a second chamber, and the air bag is arranged in the second chamber.

Preferably, the fixed sleeve is further provided with an annular groove and an empty groove, the annular groove is formed in the axial end face, in contact with the working cylinder barrel, of the fixed sleeve, and the empty groove is formed in the opposite end face, in contact with the annular groove end face, of the fixed sleeve.

Preferably, the radial position of the empty groove is provided with a fastening ring, and the fastening ring is made of high-wear-resistant rubber.

Preferably, the dustproof ring is an oil seal, and the dustproof ring is in interference fit with the piston rod.

Preferably, the first chamber is a chamber into which the piston rod extends, the restoring valve system is fixed between the first chamber and the second chamber, and the second chamber is provided with a partition plate which is in contact with the restoring valve system.

Preferably, the reset valve system and the partition plate are provided with through holes, and the through holes are used for communicating the first chamber with the second chamber.

The beneficial effects of the utility model reside in that: set up at the junction of working cylinder and piston rod and stabilize the sleeve, utilize the structural feature of stabilizing the sleeve to improve the leakproofness between working cylinder and the piston rod and the stability of the axial motion of piston rod in the working cylinder to set up the idle stroke that the gasbag formed in the working cylinder when solving shock absorber horizontal installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an automobile shock absorber according to the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1.

Reference numerals:

1. the piston rod 2, the dust cover 3, the working cylinder 4, the fixing sleeve 5, the guide seat 6, the recovery valve system 7, the air bag 8, the groove 9, the shell 10, the dust ring 11, the first chamber 12, the second chamber 13, the empty groove 14, the annular groove 15, the fastening ring 16, the through hole 17 and the partition plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings.

The utility model provides a following technical scheme:

as shown in attached figures 1-2, an automobile shock absorber comprises a piston rod 1, a dust cover 2 and a working cylinder 3, wherein one end of the piston rod 1 extends into the working cylinder 3, the dust cover 2 is connected with the other end of the piston rod 1, the opening direction of the dust cover 2 is opposite to the working cylinder 3, a fixed sleeve 4, a guide seat 5, a recovery valve system 6 and an air bag 7 are arranged in the working cylinder 3, the fixed sleeve 4 is arranged at the joint of the working cylinder 3 and the piston rod 1, a concave ridge 8 is arranged in a through hole of the fixed sleeve 4, the concave ridge 8 is a prismatic groove with a triangular cross section, a plurality of concave ridges 8 are arranged on the hole wall of the through hole of the fixed sleeve 4, the concave ridges 8 are arranged for reducing the contact area of the hole wall of the through hole and the piston rod 1, avoiding excessive friction between the through hole and the piston rod 1, and ensuring that the sealing performance between the working cylinder 3 and the piston rod 1 is increased through the fixed sleeve 4, the guide seat 5 is arranged below the fixed sleeve 4, the fixed sleeve 4 is arranged at the joint of the guide seat 5 and the piston rod 1, the fixed sleeve 4 is provided with a shell 9 and a dust ring 10, the dust ring 10 surrounds the piston rod 1, the shell 9 covers the dust ring 10 through the guide seat 5, the guide seat 5 is fixed in the working cylinder 3, the dust ring 10 is an oil seal, the dust ring 10 covers the piston rod 1, the shell 9 is covered by the guide seat 5 to fix the shell 9, the dust ring 10 and the piston rod 1 are in interference fit, the oil seal is connected to further ensure sealing, the fixing of the fixed sleeve 4 and the guide seat 5 can improve the axial motion stability of the piston rod 1, the recovery valve system 6 is arranged in the working cylinder 3, the recovery valve system 6 divides the working cylinder 3 into a first chamber 11 and a second chamber 12, the air bag 7 is arranged in the second chamber 12, the structure described herein is suitable for use in a hydraulic shock absorber.

Fixed sleeve 4 still is equipped with annular 14 and dead slot 13, annular 14 sets up the axial terminal surface at fixed sleeve 4 and the contact of working cylinder 3, dead slot 13 is then seted up at the relative terminal surface that is equipped with the annular 14 terminal surface, and the design of annular 14 and dead slot 13 makes fixed sleeve 4, makes the position that fixed sleeve 4 and piston rod 1 are connected can carry out slight activity, avoids leading to wearing and tearing because of the friction between the two.

The radial position of the empty groove 13 is provided with a fastening ring 15, the fastening ring 15 is made of high-wear-resistant rubber, and the position of the part, clamped by the piston rod 1, of the fixing sleeve 4 is restrained by the elasticity of the high-wear-resistant rubber.

The dustproof ring 10 is an oil seal, and the dustproof ring 10 is in interference fit with the piston rod 1.

The first chamber 11 is a chamber into which the piston rod 1 extends, the reset valve system 6 is fixed between the first chamber 11 and the second chamber 12, the second chamber 12 is provided with a partition 17, and the partition 17 contacts the reset valve system 6.

The reset valve system 6 and the partition plate 17 are both provided with through holes 16, the first chamber 11 and the second chamber 12 are communicated through the through holes 16, and because the shock absorber is horizontally arranged and needs to eliminate idle stroke formed by volume change stroke of the piston rod 1 moving in the working cylinder 3, the air bag 7 is added to enlarge the volume of the working cylinder 3, and the volume of oil is not changed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automotive shock absorber characterized in that: the dust-proof device comprises a piston rod, a dust cover and a working cylinder barrel, wherein one end of the piston rod stretches into the working cylinder barrel, the dust cover is connected with the other end of the piston rod, the opening direction of the dust cover is opposite to the working cylinder barrel, a fixing sleeve, a guide seat, a restoration valve system and an air bag are arranged in the working cylinder barrel, the fixing sleeve is arranged at the joint of the working cylinder barrel and the piston rod, a groove is formed in a through hole of the fixing sleeve, the guide seat is arranged below the fixing sleeve, the fixing sleeve is arranged at the joint of the guide seat and the piston rod, the fixing sleeve is provided with a shell and a dust ring, the dust ring surrounds the piston rod, the shell covers the dust ring through the guide seat, the restoration valve system is arranged in the working cylinder barrel, the restoration valve system separates the working cylinder barrel into a first cavity and a second cavity, and the air bag is arranged in the second cavity.

2. The shock absorber for an automobile of claim 1, wherein: the fixed sleeve is also provided with an annular groove and an empty groove, the annular groove is arranged on the axial end face of the fixed sleeve contacted with the working cylinder barrel, and the empty groove is arranged on the opposite end face of the annular groove end face.

3. The shock absorber for vehicle as set forth in claim 2, wherein: the radial position of the empty groove is provided with a fastening ring, and the fastening ring is made of high-wear-resistant rubber.

4. The shock absorber for an automobile of claim 1, wherein: the dustproof ring is an oil seal, and the dustproof ring is in interference fit with the piston rod.

5. The shock absorber for an automobile of claim 1, wherein: the first cavity is a cavity into which the piston rod extends, the recovery valve system is fixed between the first cavity and the second cavity, the second cavity is provided with a partition plate, and the partition plate is in contact with the recovery valve system.

6. The shock absorber for an automobile of claim 1, wherein: the reset valve system and the partition plate are both provided with through holes, and the first cavity is communicated with the second cavity through the through holes.