CN212202939U

CN212202939U - Automobile shock absorber assembly

Info

Publication number: CN212202939U
Application number: CN202020037638.3U
Authority: CN
Inventors: 潘建武; 陈剑
Original assignee: Wenzhou Huayang Metalworking Machinery Co ltd
Current assignee: Wenzhou Huayang Metalworking Machinery Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-12-22
Anticipated expiration: 2030-01-08

Abstract

The invention discloses an automobile shock absorber assembly, which comprises an outer cylinder, a working cylinder, a front cover, a dust cover, a piston rod, a compression valve assembly and a piston assembly, wherein one end of the compression valve assembly is connected with the front cover, the compression valve assembly comprises a bottom valve body, a bottom valve body positioning piece, a valve rod, a compensation disc and a first valve plate group, the valve rod is provided with a valve rod communicating through hole along the axial direction of the piston rod, the compensation disc and the first valve plate group are sleeved on the valve rod, the bottom valve body positioning piece is sleeved outside the valve rod, one end of the bottom valve body positioning piece is limited by the bottom valve body and the working cylinder, two ends of the first valve plate group respectively press the compensation disc and the bottom valve body positioning piece, the first valve plate group comprises a plurality of valve plates, the outer diameters of the valve plates of the first valve plate group are gradually reduced from the bottom valve body to the compensation disc so that a decompression buffer area is formed between the bottom valve body, the damping characteristic of the shock absorber is more stable, and the performance requirement of the shock absorber can be ensured.

Description

Automobile shock absorber assembly

Technical Field

The utility model relates to an automobile shock absorber system especially indicates an automobile shock absorber assembly.

Background

Shock absorbers are shock absorbing elements that are widely used in automotive suspension systems. The structure is characterized in that a floating piston is arranged at the lower part of the cylinder barrel, and a sealing ring with a large section is arranged on the floating piston to completely separate oil and gas. When the wheel jumps up and down, the working piston of the shock absorber reciprocates in oil liquid, so that oil pressure difference is generated between an upper cavity and a lower cavity of the working piston, and pressure oil pushes away a valve piece to flow back and forth. The valve generates a large damping force to the pressure oil, so that the vibration is attenuated. However, most of the existing vehicle shock absorbers are complex in structure and poor in sealing performance, so that the shock absorbing effect is not good enough, and the service life is short. The cylinder type shock absorber with bidirectional action at present usually comprises a working cylinder and an oil storage cylinder barrel, wherein a piston and a bottom valve are arranged in the working cylinder barrel, the piston is sleeved on a piston rod, and the working cylinder is divided into an upper chamber and a lower chamber by the piston. When the connecting rod drives the piston to move downwards, the chamber at the lower end is compressed, oil flows into the chamber at the upper part through the piston, and the required damping force cannot be achieved due to the fact that the oil pressure is too low most of the time, so that the shock absorber is not sensitive enough in reaction, and the shock absorption effect of the shock absorber is influenced. When the oil flows into the lower cavity through the upper cavity, the oil in the shock absorber is easy to foam, so that the damping characteristic is not stable enough, and the shock absorption effect is influenced.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an automobile shock absorber assembly to solve the problems of the prior art.

An automobile shock absorber assembly comprises an outer barrel, a working cylinder, a front cover, a dust cover, a piston rod, a compression valve assembly and a piston assembly, wherein a damping cavity is formed in the working cylinder, the front cover and the dust cover are covered on two sides of the outer barrel, the working cylinder is concentrically arranged in the outer barrel, the piston rod, the compression valve assembly and the piston assembly are positioned in the working cylinder, one end of the compression valve assembly is connected with the front cover, the compression valve assembly comprises a bottom valve body, a bottom valve body positioning piece, a valve rod, a compensation disc and a first valve disc group, the valve rod is provided with a valve rod connecting through hole along the axial direction of the piston rod, the compensation disc and the first valve disc group are all sleeved on the valve rod, the bottom valve body positioning piece is sleeved outside the valve rod, one end of the bottom valve body positioning piece is limited by the bottom valve body and the working cylinder, and two ends of the first valve disc group are respectively compressed by the, first valve block group includes a plurality of valve blocks, the external diameter of the valve block of first valve block group is dwindled by bottom valve body setting element to the compensation video disc and is makeed gradually form the decompression buffer area between bottom valve body setting element and the compensation video disc, piston assembly is including preceding spacing piece, piston valve assembly spare, preceding spacing piece cover is on the piston rod and is located between bottom valve body setting element and the piston valve assembly spare, and piston valve assembly spare sets up the piston valve opening along the axial of piston rod, valve rod allies oneself with through-hole, piston valve opening all with damping chamber UNICOM.

Preferably, the bottom valve body positioning part is provided with a positioning part body and a positioning outer ring formed by extending the periphery of the positioning part body, and the positioning outer ring is positioned between the bottom valve body and the working cylinder and is connected with the bottom valve body and the working cylinder in a sealing way.

Preferably, the valve rod is provided with a valve rod shoulder, and the compensating disc presses the valve rod shoulder under the action of the first valve plate group.

Preferably, the piston valve assembly comprises a limiting plate, a compression valve plate group, a piston valve and a rear limiting group, the limiting plate is sleeved on the piston rod and located between the front limiting member and the compression disc assembly, and the piston valve is located between the compression valve plate group and the rear limiting group.

Preferably, a sealing sleeve is arranged between the outer side of the piston valve and the working cylinder, a plurality of sealing grooves are formed in the periphery of the piston valve, the sealing grooves are arranged along the axial direction of the piston rod at intervals, and a plurality of sealing strips extending into the sealing grooves and connected with the sealing grooves in a sealing mode are formed in the side faces, connected with the piston valve, of the sealing sleeve.

Preferably, the automobile shock absorber assembly is further provided with a guider, the guider is positioned at one end, far away from the compression valve assembly, in the outer cylinder, one end of the guider extends into the working cylinder and is connected with the inner side wall of the working cylinder, and an oil seal is arranged between the guider and the piston rod.

Preferably, the periphery of the oil seal is provided with a sealing ring groove, a sealing ring is arranged in the sealing ring groove, and the periphery of the sealing ring is connected with the guider in a sealing manner.

The invention has the beneficial effects that: according to the automobile shock absorber assembly, the outer diameter of the valve plate of the first valve plate group is gradually reduced from the bottom valve body positioning piece to the compensation disc, so that a decompression buffer area is formed between the bottom valve body positioning piece and the compensation disc, a better buffer effect can be achieved on oil, and the foaming degree of the oil is effectively reduced.

Drawings

FIG. 1 is a schematic structural view of an automotive shock absorber assembly according to the present invention.

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

Reference numerals:

1. the hydraulic control valve comprises a compression valve assembly, 2, a piston assembly, 3, a piston rod, 4, a restoring buffer block, 5, an outer cylinder, 6, a working cylinder, 7, a guider, 8, an oil seal, 9, a dust cover, 10, a locking nut, 11, a front cover, 12, a second valve plate group, 13, a buffer area, 14, a first valve plate group, 15, a piston assembly, 16, a bolt, 17, a piston valve hole, 18, a limiting plate, 19, a compensation disc, 20, a bottom valve body positioning part, 21, a bottom valve body, 22, a rear limiting plate, 23, a limiting elastic sheet, 24, a compression disc assembly, 25, a valve rod, 26, a limiting block, 27, a buffer limiting part, 28, a valve rod communication hole, 29, a front limiting part, 30, a sealing groove, 31, a sealing ring groove, 32 and a sealing ring.

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.

As shown in fig. 1-2, in the present embodiment, the vehicle shock absorber assembly includes an outer cylinder 5, a working cylinder 6, a front cover 11, a dust cover 9, a piston rod 3, a compression valve assembly 1 and a piston assembly 2, wherein a damping cavity is formed in the working cylinder 6, the front cover 11 and the dust cover 9 are covered on two sides of the outer cylinder 5, the working cylinder 6 is concentrically disposed in the outer cylinder 5, the piston rod 3, the compression valve assembly 1 and the piston assembly 2 are located in the working cylinder 6, one end of the compression valve assembly 1 is connected to the front cover 11, the compression valve assembly 1 includes a bottom valve body 21, a bottom valve body positioning member 20, a valve rod 25, a compensating disc 19 and a first valve disc group 14, the valve rod 25 is provided with a valve rod connecting through hole 28 along an axial direction of the piston rod 3, the compensating disc 19 and the first valve disc group 14 are both sleeved on the valve rod 25, bottom valve body setting element 20 cover is outside valve rod 25, and bottom valve body setting element 20's one end is passed through bottom valve body 21 is spacing with working cylinder 6, the both ends of first valve piece group 14 compress tightly compensation disc 19 and bottom valve body setting element 20 respectively, first valve piece group 14 includes a plurality of valve blocks, the external diameter of first valve piece group 14's valve block is dwindled by bottom valve body setting element 20 to compensation disc 19 and is makeed gradually form decompression buffer area 13 between bottom valve body setting element 20 and the compensation disc 19, piston assembly 2 is including preceding stopper, piston valve assembly 15, preceding stopper 29 overlaps on piston rod 25 and is located between bottom valve body setting element 20 and the piston valve assembly 15, and piston valve assembly 15 sets up piston valve opening 17 along the axial of piston rod 25, valve rod hookup through-hole 28, piston valve opening 17 all communicate with the damping chamber.

Specifically, the bottom valve positioning element 20 has a positioning element body and a positioning outer ring formed by extending the periphery of the positioning element body, and the positioning outer ring is located between the bottom valve body 21 and the working cylinder 6 and is connected with the bottom valve body 21 and the working cylinder 6 in a sealing manner.

Specifically, the valve rod 25 has a valve rod shoulder, and the compensating disc 19 is pressed against the valve rod shoulder under the action of the first valve plate group 14.

Specifically, the piston valve assembly 15 includes a limiting plate 18, a compression valve plate set, a piston valve, and a rear limiting assembly 22, which are sleeved on the piston rod 25, the limiting plate 18 is located between the front limiting member 29 and the compression disc assembly 24, and the piston valve is located between the compression valve plate set and the rear limiting assembly 22.

Specifically, be provided with the sealing sleeve spare between the piston valve outside and the working cylinder 6, the piston valve periphery sets up a plurality of seal grooves 30, seal groove 30 sets up along the axial interval of piston rod 25, the side that sealing sleeve spare and piston valve meet forms a plurality of sealing strips that stretch into in the seal groove 30 and the sealed meeting of seal groove 30.

Specifically, the automobile shock absorber assembly is further provided with a guider 7, the guider 7 is located at one end, far away from the compression valve assembly 1, in the outer cylinder, one end of the guider 7 extends into the working cylinder 6 to be connected with the inner side wall of the working cylinder 6, and an oil seal 8 is arranged between the guider 7 and the piston rod 3.

Specifically, the periphery of the oil seal 8 is provided with a sealing ring groove 31, a sealing ring 32 is arranged in the sealing ring groove 31, and the periphery of the sealing ring 32 is connected with the guider 7 in a sealing manner.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile shock absorber assembly, includes urceolus, working cylinder, protecgulum, shield, piston rod, compression valve assembly and piston assembly, form the damping chamber in the working cylinder, protecgulum and shield closing cap are in the both sides of urceolus, and the concentric setting of working cylinder is in the urceolus, and piston rod, compression valve assembly, piston assembly are located the working cylinder, characterized in that: one end of the compression valve assembly is connected with the front cover, the compression valve assembly comprises a bottom valve body, a bottom valve body positioning piece, a valve rod, a compensation disc and a first valve disc group, the valve rod is provided with a valve rod connecting through hole along the axial direction of the piston rod, the compensation disc and the first valve disc group are sleeved on the valve rod, the bottom valve body positioning piece is sleeved outside the valve rod, one end of the bottom valve body positioning piece is limited by the bottom valve body and the working cylinder, two ends of the first valve disc group respectively compress the compensation disc and the bottom valve body positioning piece, the first valve disc group comprises a plurality of valve discs, the outer diameters of the valve discs of the first valve disc group are gradually reduced from the bottom valve body positioning piece to the compensation disc so as to form a decompression buffer area between the bottom valve body positioning piece and the compensation disc, the piston assembly comprises a front limiting piece and a piston valve assembly, the front limiting piece is sleeved on the piston rod and is positioned between the bottom valve body and the piston valve, piston valve assembly spare sets up the piston valve opening along the axial of piston rod, valve rod allies oneself with through-hole, piston valve opening all with damping chamber UNICOM.

2. The vehicle shock absorber assembly as set forth in claim 1, wherein: the bottom valve body positioning piece is provided with a positioning piece body and a positioning outer ring formed by extending the periphery of the positioning piece body, and the positioning outer ring is positioned between the bottom valve body and the working cylinder and is connected with the bottom valve body and the working cylinder in a sealing way.

3. The vehicle shock absorber assembly as set forth in claim 1, wherein: the valve rod is provided with a valve rod shoulder part, and the compensating disc presses the valve rod shoulder part under the action of the first valve plate group.

4. The vehicle shock absorber assembly according to claim 1 or 2, wherein: the piston valve assembly comprises a limiting plate, a compression valve plate group, a piston valve and a rear limiting group, wherein the limiting plate, the compression valve plate group, the piston valve and the rear limiting group are sleeved on the piston rod, the limiting plate is located between the front limiting group and the compression disc group, and the piston valve is located between the compression valve plate group and the rear limiting group.

5. The vehicle shock absorber assembly as set forth in claim 4, wherein: be provided with sealed external member between piston valve outside and the working cylinder, the piston valve periphery sets up a plurality of seal grooves, the seal groove sets up along the axial interval of piston rod, the side that sealed external member and piston valve meet forms a plurality of stretches into with the sealing strip that the seal groove seal meets in the seal groove.

6. The vehicle shock absorber assembly as set forth in claim 4, wherein: the automobile shock absorber assembly is characterized by further comprising a guider, the guider is located at one end, far away from the compression valve assembly, in the outer cylinder, one end of the guider extends into the working cylinder and is connected with the inner side wall of the working cylinder, and an oil seal is arranged between the guider and the piston rod.

7. The vehicle shock absorber assembly as set forth in claim 6, wherein: the periphery of the oil seal is provided with a sealing ring groove, a sealing ring is arranged in the sealing ring groove, and the periphery of the sealing ring is connected with the guider in a sealing manner.