CN214465796U

CN214465796U - Buffer block, shock absorber and car

Info

Publication number: CN214465796U
Application number: CN202022810113.1U
Authority: CN
Inventors: 王鑫; 刘鹏
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-10-22
Anticipated expiration: 2030-11-27

Abstract

The utility model provides a buffer block, shock absorber and car, buffer block include the elastic buffer body and rib, the elastic buffer body include first installation end, with the second installation end that first installation end is relative, and run through the shaft hole of first installation end and second installation end, the rib is located the internal portion of elastic buffer just is close to first installation end sets up, the rib includes first oil pocket, second oil pocket and connection the oil pipe way of buckling of first oil pocket and second oil pocket, first oil pocket and second oil pocket along the elastic buffer axial setting, so first oil pocket is used for storage fluid, the second oil pocket is used for the storage gas, has arranged oil pocket and air cavity at the internal portion of elastic buffer, can provide great damping when the pressurized with the external impact force that the buffering received.

Description

Buffer block, shock absorber and car

Technical Field

The utility model relates to an automobile shock attenuation technical field especially relates to a buffer block, still relates to a shock absorber and car.

Background

The existing limit buffer structure of the shock absorber, in particular to a buffer structure applied to an automobile, is mostly characterized in that a multi-ring structure is arranged on the outer surface of a buffer block, and a reinforcing ring is sleeved outside the multi-ring structure. When a small vibration force is applied, the small end of the frustum of the buffer block and the tooth root part of the multi-ring structure have small rigidity and are easy to deform, so that the buffer block plays a role in buffering; when the vehicle is violently vibrated, the buffer block continues to be compressed and deformed to cause the large end of the frustum of the buffer block and the reinforcing ring to deform under stress, so that a larger buffer effect is achieved. When the automobile is compressed by impact generated by strong vibration brought by the outside, the buffer block only depends on the elasticity of the buffer block to realize poor buffer effect brought by buffering.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a buffer block overcomes the poor technical problem of prior art's buffering effect.

The utility model provides a buffer block, which comprises an elastic buffer body and a reinforcing part,

the elastic buffer body comprises a first mounting end, a second mounting end opposite to the first mounting end, and a shaft hole penetrating through the first mounting end and the second mounting end,

the reinforced part is arranged in the elastic buffer body and is close to the first mounting end, the reinforced part comprises a first oil cavity, a second oil cavity and an oil pipeline for connecting the first oil cavity and the second oil cavity, the first oil cavity and the second oil cavity are arranged at intervals in the axial direction of the elastic buffer body, so that the first oil cavity is used for storing oil, and the second oil cavity is used for storing gas.

When the elastic buffer body is pressed by impact force in the direction from the second mounting end to the first mounting end, oil in the first oil cavity is extruded to enter the second oil cavity along the oil pipeline, and the oil in the oil pipeline generates damping to absorb the impact force.

The reinforcing part comprises a first sub-reinforcing part and a second sub-reinforcing part, the first sub-reinforcing part and the second sub-reinforcing part respectively comprise the first oil cavity, the second oil cavity and the oil pipeline, and the first sub-reinforcing part and the second sub-reinforcing part are symmetrically arranged in the elastic buffer body through the shaft holes.

Wherein the first oil chamber and the second oil chamber are sealed chambers provided around the shaft hole.

Wherein the surface of the second mounting end is a curved surface.

Wherein the oil conduit includes a bent portion and a rounded portion connecting the bent portion.

The oil pipeline is of a broken line type, the broken angle of the oil pipeline is inversely proportional to the damping value generated by oil in the oil pipeline, and the length of the oil pipeline is proportional to the damping value generated by the oil in the oil pipeline.

The elastic buffer body comprises an outer peripheral surface connected with the first installation end and the second installation end, four spaced annular grooves surrounding the elastic buffer body are arranged on the outer peripheral surface, the annular grooves divide the elastic buffer body into a first buffer section, a second buffer section, a third buffer section and a fourth buffer section which are sequentially connected, the second installation end is located on the first buffer section, the first installation end is located on the fourth buffer section, the first oil cavity is located in the third buffer section, and the second oil cavity is located in the fourth buffer section.

Wherein the rigidity of the first buffer section of the elastic buffer body is smaller than that of the fourth buffer section.

Wherein, the elastic buffer body is made of polyurethane material.

The application still provides a shock absorber, its include the body, the piston rod and the buffer block, the body reaches be formed with mounting hole and shaft hole on the buffer block respectively, the one end of piston rod is located this is internal, and the other end passes in proper order the mounting hole reaches the shaft hole is suitable for with the automobile body coupling.

The application also provides an automobile which comprises the shock absorber or the buffer block.

The utility model provides a buffer block has first oil pocket and second oil pocket at elastic buffer body internal layout, and the interior fluid of first oil pocket gets into the second oil pocket along oil pipe way during pressurized, and fluid is when oil pipe way, because the turn of oil pipe way and the atmospheric pressure of air cavity, gets into the air cavity in-process at oil pipe way and produces the damping, and the impact force is absorbed by fluid, and mechanical energy converts internal energy into, makes the shock absorber transmit the impact force of automobile body and greatly reduces. When the wheel descends, the first oil cavity is restored to the original state, and under the action of pressure difference and gravity, oil returns to the first oil cavity again.

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 a buffer block provided by the present invention;

FIG. 2 is a schematic diagram of the internal structure of the buffer block shown in FIG. 1, mainly showing the structure of the reinforcement part;

FIG. 3 is a schematic top view of a first embodiment of a reinforcement portion of the bumper shown in FIG. 2;

FIGS. 4 and 5 are schematic views of a reinforcement portion of a second embodiment of the bumper shown in FIG. 1;

fig. 6 is a schematic view of a part of a shock absorber including a buffer block according to the present invention.

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 utility model provides a buffer block for the shock absorber of car realizes further buffering for the shock attenuation of car, increases the comfort. The cushion block of the present embodiment includes an elastic cushion body and a reinforcing portion. Of course, the cushion block and the shock absorber can also be used in other devices or vehicles needing shock absorbing performance.

The elastic buffer body comprises a first mounting end, a second mounting end opposite to the first mounting end and a shaft hole penetrating through the first mounting end and the second mounting end.

The reinforced part is arranged in the elastic buffer body and is close to the first mounting end, the reinforced part comprises a first oil cavity, a second oil cavity and an oil pipeline connected with the first oil cavity and the second oil cavity, the first oil cavity and the second oil cavity are axially arranged along the elastic buffer body, so that the first oil cavity is used for storing oil, and the second oil cavity is used for storing gas. When the elastic buffer body is pressed by impact force in the direction from the second mounting end to the first mounting end, the first oil cavity is also compressed, the internal oil is extruded to enter the second oil cavity along the oil pipeline, and the oil in the oil pipeline generates damping to absorb the impact force. Specifically, oil in the first oil cavity enters the second oil cavity along the oil pipeline, when the oil is in the oil pipeline, damping is generated in the process that the oil pipeline enters the air cavity due to the turning of the oil pipeline and the air pressure of the air cavity, impact force is absorbed by the oil, mechanical energy is converted into internal energy, and the impact force transmitted to a vehicle body by the shock absorber is greatly reduced. When the wheel descends, the first oil cavity is restored to the original state, and under the action of pressure difference and gravity, oil returns to the first oil cavity again.

The buffer block 100 described herein is described below in terms of a specific embodiment. Referring to fig. 1 and 2, the cushion block 100 includes an elastic cushion body 10 and a reinforcing portion. The elastic buffer body 10 includes a first mounting end 11, a second mounting end 12 opposite to the first mounting end 11, and a shaft hole 13 penetrating the first mounting end 11 and the second mounting end 12.

Specifically, the elastic buffer body is a substantially conical cylinder made of a polyurethane material. The elastic buffer body 10 includes an outer circumferential surface 14 connecting the first and

second mounting ends

11 and 12. As shown in fig. 2, four spaced annular grooves 15 surrounding the elastic buffering body 10 are provided on the outer circumferential surface 14, and the elastic buffering body 10 is divided into a first buffering section 16A, a second buffering section 16B, a third buffering section 16C and a fourth buffering section 16D which are connected in sequence by the four annular grooves, and the outer diameters of the first buffering section 16A, the second buffering section 16B, the third buffering section 16C and the fourth buffering section 16D are sequentially increased. The second mounting end 12 is located at an end of the first buffer section 16A away from the second buffer section 16B, the first mounting end 11 is located at an end of the fourth buffer section 16D away from the third buffer section 16C, the first oil chamber is located in the third buffer section 16C, and the second oil chamber is located in the fourth buffer section 16D. The stiffness of the first cushioning section 16A of the resilient cushioning body 10 is less than the stiffness of the fourth cushioning section 16D. The fourth buffer section 16D of the elastic buffer body 10 has a relatively high rigidity and is connected to the vehicle body 220 without being deformed by an impact.

Further, in this embodiment, the surface of the second mounting end 12 is a curved surface, which may be a small wavy surface, the rigidity of the first buffer section 16A is relatively low, and the surface of the second mounting end 12 is in a fine wavy shape, when the wheel passes through the pit and the threshold and is impacted, the shock absorber contacts with the first buffer section 16A of the elastic buffer body 10, the first buffer section 16A deforms under pressure, and the gas in the shaft hole 13 is discharged from the wavy surface, thereby effectively avoiding the generation of abnormal sound; and the port rigidity of the shaft hole at the second mounting end 12 is smaller, so that the impact feeling of the elastic buffer body at the initial contact stage is reduced, and the comfort is further improved.

Referring to fig. 3, the reinforcing portion is disposed inside the elastic buffer 10 and near the first mounting end 11. The reinforcing part of the first embodiment of the present application includes a first sub-reinforcing part 20A and a second sub-reinforcing part 20B. The first sub-reinforcing part 20A and the second sub-reinforcing part 20B each include the first oil chamber, the second oil chamber, and the oil duct, and the first sub-reinforcing part 20A and the second sub-reinforcing part 20B are symmetrically disposed inside the elastic buffer body 10 with the shaft hole 13, wherein the inside of the elastic buffer body 10 is completely sealed inside.

Specifically, the first sub-reinforcement portion 20A includes a first oil chamber 22, the second oil chamber 24, and the oil conduit 26. The second sub-reinforcement 20B comprises a first oil chamber 22, said second oil chamber 24 and said oil conduit 26. The detailed structure will be described later by taking the first sub reinforcement portion 20A as an example. The first and

second oil chambers

22 and 24 are axially disposed along the elastic buffer body 10, so the first oil chamber 22 is used for storing oil, and the second oil chamber 24 is used for storing gas. When the elastic buffer body 10 is pressed by an impact force in a direction from the second mounting end 12 to the first mounting end 11, the first oil chamber 22 is also compressed, the internal oil is pressed along the oil passage 26 into the second oil chamber 24, and the oil in the oil passage 26 is damped to absorb the impact force. In this embodiment, the elastic buffer 10 is provided with a first sub-reinforcing portion 20A and a second sub-reinforcing portion 20B, and the symmetrical arrangement ensures the stress balance of the elastic buffer. When a large pit or bank bump is encountered in the driving process of an automobile, wheels move upwards under large impact, the shock absorber compresses the elastic buffer body 10, the part of the elastic buffer body 10 provided with the reinforcing part is extruded, oil in the first oil cavity 22 enters the second oil cavity 24 along the oil pipeline 26, and when the oil is in the oil pipeline, due to the turning of the oil pipeline 22 and the air pressure of the second oil cavity 24, damping is generated in the process that the oil pipeline 26 enters the air cavity, impact force is absorbed by the oil, mechanical energy is converted into internal energy, so that the impact force transmitted to the automobile body by the shock absorber is greatly reduced, and the comfort of the automobile is further increased. When the wheel descends, the first oil chamber 22 is restored, and under the action of pressure difference and gravity, the oil returns to the first oil chamber 22 again from the second oil chamber 24.

Further, in the present embodiment, the oil pipe 26 is a broken line type, and the broken angle of the oil pipe 26 is inversely proportional to the damping value generated by the oil in the oil pipe 26. The length of the oil pipe is proportional to the damping value generated by the oil in the oil pipe. That is, the greater the angle of the axis of rotation of the oil conduit, the smaller the damping value that is generated. The longer the length of the oil pipeline is, the greater the damping value generated by the oil in the oil pipeline is. Further, the greater the viscosity of the oil, the greater the damping value generated by the oil in the oil conduit, the greater the volume of the oil, the smaller the air pressure in the oil chamber, and the greater the damping value generated by the oil in the oil conduit 26. Wherein the volumes of oil in the first oil chamber 22 and gas in the second oil chamber 24 are inversely proportional to the damping generated by the oil entering the oil conduit 26. That is, according to the needs of the shock absorber and the shock absorption needs of the elastic buffer body, the oil pipe 26 can adjust the damping value of the oil in the oil pipe by adjusting the angle of the broken line, adjusting the length of the oil pipe, and adjusting the volume ratio of the oil in the first oil chamber 22 and the gas in the second oil chamber 24, so as to better absorb the impact force, and the oil can adjust the damping value by changing the viscosity and the volume, thereby increasing the elastic buffer body. Of course the oil duct may also be curved as long as sufficient damping is generated.

Referring to fig. 4 and 5, the reinforcement portion 30 of the second embodiment of the present application includes a first oil chamber 32, a second oil chamber 34, and an oil conduit 36 connecting the first oil chamber 32 and the second oil chamber 34. Unlike the above-described embodiment, the reinforcement portion 30 is one, and the first oil chamber 32 and the second oil chamber 34 are sealed chambers provided around the shaft hole 13. The oil pipeline can be one or two symmetrically arranged oil pipelines. Specifically, the first oil chamber 32 is an annular closed space, and oil is contained therein; the second oil chamber 34 is an annular closed space, and contains gas therein. The first oil chamber 32 is located in the third buffer section 16C, and the second oil chamber 36 is located in the fourth buffer section 16D. When meeting great pit, bank and jolting at the automobile in-process of traveling, the wheel receives great impact upward movement, and the shock absorber compression elasticity buffer body makes the elasticity buffer body receive by second installation end 12 arrives the impact force of first installation end 11 direction, and the part that elasticity buffer body 10 was equipped with the rib receives the extrusion, and oil gets into second oil pocket 34 along oil pipe way 36 in the first oil pocket 32, and oil is when oil pipe way, because the atmospheric pressure of the turn of oil pipe way 36 and second oil pocket 34, produces the damping in-process at oil pipe way 36 entering air cavity, and the impact force is absorbed by oil, and mechanical energy converts internal energy into, makes the shock absorber transmit the impact force of automobile body greatly reduce, and then increases the comfort of automobile. When the wheel descends, the first oil chamber 32 is restored, and under the action of pressure difference and gravity, the oil returns to the first oil chamber 32 again from the second oil chamber 34.

As shown in fig. 6, the present application further provides a shock absorber 200, which includes a body 210, a piston rod 211 and the above-mentioned bumper 100, wherein the body 210 and the elastic bumper are respectively provided with a mounting hole and a shaft hole 13, one end of the piston rod 211 sequentially passing through the mounting hole and the shaft hole 13 is connected to the vehicle body 220, that is, the piston rod 211 sequentially passes through the body 210 and the bumper 100 and is connected to the vehicle body 220.

The application also provides an automobile which comprises the shock absorber or the buffer block. The utility model provides a buffer block has oil pocket and air cavity at the internal portion arrangement of elastic buffer, can provide great damping during the pressurized, has improved the damping performance of shock absorber, and transmits the striking sense for the automobile body when effectively having avoided the impact, improves car comfort.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A buffer block is characterized by comprising an elastic buffer body and a reinforcing part;

2. The snubber block of claim 1, wherein when the elastomeric snubber body is compressed by an impact force in a direction from the second mounting end to the first mounting end, oil in the first oil chamber is squeezed along an oil passage into the second oil chamber, and the oil in the oil passage damps to absorb the impact force.

3. The cushion block according to claim 1 or 2, wherein the reinforcement portion includes a first sub-reinforcement portion and a second sub-reinforcement portion, each of the first sub-reinforcement portion and the second sub-reinforcement portion includes the first oil chamber, the second oil chamber, and the oil duct, and the first sub-reinforcement portion and the second sub-reinforcement portion are symmetrically disposed inside the elastic cushion body with respect to the shaft hole.

4. The cushion block according to claim 1 or 2, wherein the first oil chamber and the second oil chamber are sealed chambers provided around the shaft hole.

5. The cushion block of claim 1 or 2, wherein the surface of the second mounting end is curved.

6. The buffer block of claim 1 or 2, wherein the oil pipe is of a broken line type, the angle of the broken line of the oil pipe is inversely proportional to the damping value generated by the oil in the oil pipe, and the length of the oil pipe is proportional to the damping value generated by the oil in the oil pipe.

7. The cushion block of claim 1, wherein the resilient cushion body includes an outer peripheral surface connecting the first mounting end and the second mounting end, four spaced annular grooves are provided on the outer peripheral surface around the resilient cushion body, and the four annular grooves divide the resilient cushion body into a first cushion section, a second cushion section, a third cushion section, and a fourth cushion section, which are connected in sequence, the second mounting end is located on the first cushion section, the first mounting end is located on the fourth cushion section, the first oil cavity is located in the third cushion section, and the second oil cavity is located in the fourth cushion section.

8. The cushion block of claim 7, wherein the first cushion section stiffness of the resilient cushion body is less than the stiffness of the fourth cushion section.

9. A shock absorber comprising a body, a piston rod and a bumper as claimed in any one of claims 1 to 8, said body and said bumper having a mounting hole and an axial hole formed therein respectively, one end of said piston rod being located within said body and the other end thereof passing through said mounting hole and said axial hole in sequence and being adapted to be connected to a vehicle body.

10. A motor vehicle, comprising the shock absorber of claim 9.