CN214424983U

CN214424983U - Automobile shock absorber with double-piston structure

Info

Publication number: CN214424983U
Application number: CN202023336557.2U
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 with a double-piston structure comprises a working cylinder barrel, a piston rod and a restoring valve system, wherein the working cylinder barrel comprises a body and an inner barrel, the body is provided with a shock absorption cavity, the inner barrel is arranged in the shock absorption cavity, a cavity is formed between the inner barrel and the body, the piston rod extends into the inner barrel, one end of the piston rod, which is positioned in the inner barrel, is provided with a buffer component, the buffer component comprises a buffer disc, a buffer component and a stabilizing ring, the buffer disc is provided with a piston hole and a ring groove, the axis of the piston hole is parallel to the axis of the piston rod, a buffer rod arranged on the piston rod extends into the piston hole, the buffer component is arranged in the piston hole, the piston hole is provided with a through hole, the through hole penetrates through the buffer disc, the stabilizing ring is arranged in the ring groove, the stabilizing ring is contacted with the inner barrel, the restoring valve system is arranged at the bottom of the inner barrel, one end of the piston rod is additionally provided with a group of buffer component to realize the double-piston structure, effectively improve the shock-absorbing performance of shock absorber.

Description

Automobile shock absorber with double-piston structure

Technical Field

The utility model relates to a technical field of automobile shock absorber, concretely relates to automobile shock absorber with dual piston structure.

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 utility model discloses structural buffering subassembly that adds of shock absorber at present improves the average damping performance of current shock absorber.

Disclosure of Invention

In view of this, the utility model provides an automobile shock absorber with dual piston structure.

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

an automobile shock absorber with a double-piston structure comprises a working cylinder barrel, a piston rod and a recovery valve system, the working cylinder barrel comprises a body and an inner cylinder, the body is provided with a damping cavity, the inner cylinder is provided with a secondary damping cavity, a cavity is formed between the inner cylinder and the body, the piston rod extends into the inner cylinder, one end of the piston rod, which is positioned at the inner cylinder, is provided with a buffer component, the buffer component comprises a buffer disc, a buffer part and a stabilizing ring, the buffer disc is provided with a piston hole and a ring groove, the axle center of the piston hole is parallel to the axle center of the piston rod, the buffer rod arranged on the piston rod extends into the piston hole, a buffer piece is arranged in the piston hole, a through hole is formed in the piston hole and penetrates through the buffer disc, the stabilizing ring is arranged on the annular groove, the stabilizing ring is in contact with the inner barrel, and the recovery valve system is arranged at the bottom of the inner barrel.

Preferably, one end of the piston rod, which is provided with the buffer assembly, is a compression valve system, the compression valve system is provided with a piston cylinder and a seat body, one end of the piston cylinder extends outwards along the radial direction to form a circular truncated cone plane, the buffer rod is arranged on the circular truncated cone product surface, and the other end of the piston cylinder is connected with the seat body.

Preferably, a spring is arranged between the piston cylinder and the seat body, the spring surrounds the piston cylinder, one end of the spring is fixed on the seat body, and the other end of the spring is not in contact with the circular truncated cone plane.

Preferably, the piston rod drives the compression valve system to move along the diameter of the inner cylinder.

Preferably, the base body is further provided with a through hole, and the through hole penetrates through the base body.

Preferably, the length of the buffer rod is smaller than the depth of the piston hole, and after the buffer rod completely enters the piston hole, the remaining space in the piston hole is larger than the height of the buffer piece after being compressed to the limit.

The beneficial effects of the utility model reside in that: the buffering component is arranged at one end, in the inner cylinder, of the piston rod, the accuracy of the axial position of the buffering component in the inner cylinder is stabilized by the stabilizing ring, the piston rod is matched with the buffering component and the compression valve system to perform secondary buffering, and the overall vibration damping performance is effectively improved.

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 view of an automobile shock absorber with a dual piston structure according to the present invention;

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

Reference numerals:

1. the piston comprises a working cylinder barrel, 2, a piston rod, 3, a restoring valve system, 4, a body, 5, an inner barrel, 6, a vibration reduction cavity, 7, a cavity, 8, a buffer component, 9, a buffer disc, 10, a buffer piece, 11, a stabilizing ring, 12, a piston hole, 13, a ring groove, 14, a compression valve system, 15, a piston barrel, 16, a seat body, 17, a circular truncated cone plane, 18, a spring, 19, a through hole, 20 and a buffer rod.

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 the attached drawings 1-2, the automobile shock absorber with double-piston structure comprises a working cylinder barrel 1, a piston rod 2 and a restoring valve system 3, wherein the working cylinder barrel 1 comprises a body 4 and an inner cylinder 5, the body 4 is provided with a damping cavity 6, the inner cylinder 5 is arranged in the damping cavity 6, a cavity 7 is formed between the inner cylinder 5 and the body 4, magnetorheological fluid or the oil can be injected into the cavity 7, the piston rod 2 extends into the inner cylinder 5, one end of the piston rod 2, which is located at the inner cylinder 5, is provided with a buffer component 8, the buffer component 8 comprises a buffer disc 9, a buffer part 10 and a stabilizing ring 11, the buffer disc 9 is provided with a piston hole 12 and a ring groove 13, the axis of the piston hole 12 is parallel to the axis of the piston rod 2, because the piston rod 2 drives the compression valve system 14 and the buffer part 8 to move along the axial direction of the inner cylinder 5 in the inner cylinder 5, the axis of the buffer disc 9 and the axis of the piston hole 12 are both parallel to the piston rod 2, the piston rod 2 is provided with a buffer rod extending into the piston hole 12, the buffer rod extends into the piston hole 12 to play a role of connecting the compression valve system 14 with the buffer component 8, a buffer component 10 is arranged in the piston hole 12, the piston hole 12 is provided with a through hole 19, the through hole 19 penetrates through the buffer disc 9, when vibration reduction is carried out, the piston rod 2 drives the compression valve system 14, the compression valve system 14 transmits partial impact force to the buffer component 8 through the buffer rod, the buffer component 8 adopts the principle that the compression valve system 14 pushes the buffer rod downwards into the piston hole 12, the buffer component 10 in the piston hole 12 counteracts partial impact force, the buffer component 10 is a spring with higher stiffness coefficient, the higher stiffness coefficient is higher, the buffer performance is higher, when large impact force is received, the piston rod 2 presses the buffer component 8 to the recovery valve system 3, and the buffer rod drives the buffer component 8 to reset after the impact force is relieved, stabilizer ring 11 sets up at annular 13, stabilizer ring 11 contact inner tube 5, and stabilizer ring 11 is a wear-resisting and soft current rubber circle, and stabilizer ring 11 contact inner tube 5 is clearance fit, prevents that the friction between stabilizer ring 11 and the inner tube 5 is too big to will set up two sets of stabilizer rings 11, more stabilizer ring 11 can improve the axial stability of buffer disk 9 more, but too much can lead to rubbing too big, the valve system 3 that restores sets up in inner tube 5 bottom, and the through-hole 19 of piston hole 12 is for not being airtight with piston hole 12, and downthehole air compression leads to unable entering when in order to avoid the buffer beam to get into, and this structure is applicable to the atmospheric pressure shock absorber.

The piston rod 2 is equipped with the one end of buffer unit 8 and is compressed valve system 14, compressed valve system 14 has a piston barrel 15 and a pedestal 16, the one end of piston barrel 15 radially outwards extends and forms round platform plane 17, the buffer rod sets up at round platform plane 17, the piston barrel 15 other end is connected with pedestal 16, and this structure is the piston structure of buffer rod self-bring.

A spring 18 is arranged between the piston cylinder 15 and the seat body 16, the spring 18 surrounds the piston cylinder 15, one end of the spring 18 is fixed on the seat body 16, the other end of the spring 18 is not in contact with the truncated cone plane 17, the impact force is offset by the spring 18, and the seat body 16 fixes the piston cylinder 15 and provides a buffer base for the piston cylinder 15.

The piston rod 2 drives the compression valve system 14 to move along the diameter of the inner cylinder 5.

The base 16 is further provided with a through hole 19, and the through hole 19 penetrates through the base 16.

The length of buffer bar is less than the degree of depth of piston hole 12, after the buffer bar got into piston hole 12 completely, remaining space in the piston hole 12 was greater than the height behind the buffer piece 10 compression to the limit, avoided the buffer bar to lead to excessively extruding the buffer piece 10 in the piston hole 12 because of the overlength, made buffer piece 10 scrap.

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 automobile shock absorber with a dual piston structure is characterized in that: the automobile shock absorber with the double-piston structure comprises a working cylinder barrel, a piston rod and a restoring valve system, the working cylinder barrel comprises a body and an inner cylinder, the body is provided with a vibration reduction cavity, the inner cylinder is arranged in the vibration reduction cavity, a cavity is formed between the inner cylinder and the body, the piston rod extends into the inner cylinder, one end of the piston rod, which is positioned at the inner cylinder, is provided with a buffer component, the buffer component comprises a buffer disc, a buffer part and a stabilizing ring, the buffer disc is provided with a piston hole and a ring groove, the axle center of the piston hole is parallel to the axle center of the piston rod, one end of the piston rod is provided with a buffer rod, the buffer rod extends into the piston hole, a buffer part is arranged in the piston hole, the piston hole is provided with a through hole, the through-hole runs through the buffer disc, the stabilizing ring sets up at the annular, stabilizing ring contact inner tube, the valve system that recovers sets up including bobbin base portion.

2. The shock absorber for an automobile having a dual piston structure according to claim 1, wherein: the piston rod is equipped with the one end of buffering subassembly and is compressed the valve system, the compression valve system has a piston cylinder and a pedestal, the one end of piston cylinder radially outwards extends and forms the round platform, the buffering pole sets up at the round platform, the piston cylinder other end is connected with the pedestal.

3. The shock absorber for an automobile having a dual piston structure according to claim 2, wherein: a spring is arranged between the piston cylinder and the base body and surrounds the piston cylinder, one end of the spring is fixed on the base body, and the other end of the spring is fixed on the circular truncated cone.

4. The shock absorber for an automobile having a dual piston structure according to claim 2, wherein: the piston rod drives the compression valve system to move axially along the inner cylinder.

5. The shock absorber for an automobile having a dual piston structure according to claim 3, wherein: the pedestal has still set up the through-hole, the through-hole runs through the pedestal.

6. The shock absorber for an automobile having a dual piston structure according to claim 1, wherein: the length of buffer rod is less than the degree of depth in piston hole, after the buffer rod got into the piston hole completely, the remaining degree of depth in the piston hole was greater than the height behind the bolster compression to the limit.