CN113431862A - Automobile barrel type hydraulic shock absorber - Google Patents
Automobile barrel type hydraulic shock absorber Download PDFInfo
- Publication number
- CN113431862A CN113431862A CN202110749713.8A CN202110749713A CN113431862A CN 113431862 A CN113431862 A CN 113431862A CN 202110749713 A CN202110749713 A CN 202110749713A CN 113431862 A CN113431862 A CN 113431862A
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- Prior art keywords
- piston
- pressure relief
- cylinder body
- shock absorber
- working chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
Abstract
The invention discloses an automobile barrel type hydraulic shock absorber which comprises a vertical hydraulic cylinder body, wherein a partition plate is arranged in the hydraulic cylinder body, a working cavity is arranged above the partition plate, hydraulic oil is filled in the working cavity, a pressure relief compensation cavity is arranged below the partition plate, a first piston is vertically assembled in the working cavity in a sliding mode, a circulation valve and an expansion valve are installed on the first piston, a compression valve and a compensation valve are installed on the partition plate, a second piston is vertically assembled in the pressure relief compensation cavity in a sliding mode, and a spring is connected between the second piston and the bottom in the pressure relief compensation cavity. The invention can avoid the problem of too fast damping attenuation of the shock absorber and can improve the damping recovery speed at the same time.
Description
Technical Field
The invention relates to the field of automobile shock absorbers, in particular to an automobile barrel type hydraulic shock absorber.
Background
The cylinder shock absorber is used for suspension shock attenuation in the car, its typical structure is shown in fig. 1, generally include vertical hydraulic cylinder body 1, two parts about the lower part is divided into by the baffle in the hydraulic cylinder body 1, wherein upper portion is as the working chamber, lower part is as pressure release compensation chamber, vertical slidable mounting has first piston 2 in the working chamber, the coaxial fixed connection piston rod 3 in 2 tops of first piston, 3 upper ends of piston rod are worn out the back from hydraulic cylinder body 1 top and are connected the automobile body through the connecting piece, hydraulic cylinder body 1 lower extreme passes through the connecting piece and connects the car suspension, install flow valve 4 on the first piston 2, the valve 5 that expands, install compression valve 6 on the baffle, compensating valve 7, the working chamber is full of hydraulic oil. When an automobile vibrates up and down, the conventional cylinder type shock absorber realizes the damping effect through the flow of internal hydraulic oil.
The working principle is as follows: when the wheel moves upwards integrally, the hydraulic cylinder body 1 is driven to move upwards, the first piston 2 slides downwards relative to the hydraulic cylinder body 1, the lower part A volume V1 of the working chamber below the first piston 2 is compressed by delta V1, and the upper part B volume V2 of the working chamber above the first piston 2 is expanded by delta V2, but because the piston rod 3 occupies part of the volume in the upper part B of the working chamber, the compressed volume delta V1 of the lower part A volume V1 of the working chamber is larger than the expanded volume delta V2 of the upper part B of the working chamber when the first piston 2 slides. The volume V1 of the lower part A of the working chamber is compressed by delta V1, hydraulic oil corresponding to delta V1 needs to be discharged, when all valves are closed, the lower part A of the working chamber is considered to be closed, the pressure of the hydraulic oil in the lower part A of the working chamber is increased due to the reduction of the volume, the circulation valve 4 on the first piston 2 is conducted under the action of the increased pressure in the lower part A of the working chamber at the moment, the hydraulic oil can be discharged to the upper part B of the working chamber from the lower part A of the working chamber, but the volume delta V2 expanded in the upper part B of the working chamber is smaller than delta V1, the upper part B of the working chamber cannot completely contain the hydraulic oil discharged from the lower part A of the working chamber, and therefore the compression valve 6 is arranged on the partition plate, the compression valve 6 is conducted under the increased pressure of the lower part A of the working chamber, and the hydraulic oil in the lower part A of the working chamber can be discharged to the pressure compensation chamber. The hydraulic oil flows in the above mode, and then the damping function when the wheels face upwards is achieved.
Similarly, when the wheel moves downwards as a whole, the hydraulic cylinder 1 is driven to move downwards, and the first piston 2 slides upwards relative to the hydraulic cylinder 1, the volume V1 of the lower part a of the working chamber below the first piston 2 is expanded by Δ V1, the pressure in the lower part a of the working chamber is reduced, and the volume V2 of the upper part B of the working chamber above the first piston 2 is compressed by Δ V2, and the pressure in the upper part B of the working chamber is increased. When the volume V2 of the upper part B of the working chamber is compressed, hydraulic oil corresponding to Δ V2 needs to be discharged, at this time, the extension valve 5 of the first piston 2 is conducted under the action of increased pressure in the upper part B of the working chamber, and the hydraulic oil can be discharged from the upper part B of the working chamber to the lower part a of the working chamber, but because the volume Δ V2 compressed by the upper part B of the working chamber is smaller than Δ V1, the hydraulic oil discharged by the upper part B of the working chamber cannot fill the enlarged volume Δ V1 of the lower part a of the working chamber, so the compensation valve 7 is arranged on the partition plate, and because the pressure in the lower part a of the working chamber is reduced, the pressure opposite to the decompression compensation chamber is increased, at this time, the compensation valve 7 on the partition plate is conducted under the action of the pressure of the decompression compensation chamber, and the hydraulic oil in the decompression compensation chamber flows to the lower part a of the working chamber to fill the enlarged volume of the lower part a of the working chamber. The hydraulic oil flows in the above mode, and then the damping function when the wheels face downwards is achieved.
The prior art cylinder shock absorber has the following problems: 1. the volume of the pressure relief compensation cavity is fixed and unchanged, so that the flowing space of hydraulic oil in the whole shock absorber is fixed, and the damping capacity is quickly attenuated. 2. When the pressure relief compensation cavity compensates the hydraulic oil towards the lower part A of the working cavity, the hydraulic oil flows completely depending on the pressure in the pressure relief compensation cavity, so that the compensation speed is slow, and the damping recovery speed of the shock absorber is slow.
Disclosure of Invention
The invention aims to provide an automobile barrel type hydraulic shock absorber to solve the problems of high damping attenuation and low recovery speed of the automobile shock absorber in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a cylinder type hydraulic shock absorber for an automobile comprises a vertical hydraulic cylinder body, a partition plate is arranged in the hydraulic cylinder body and divides the interior of the hydraulic cylinder body into an upper section and a lower section, the interior of the hydraulic cylinder body above the partition plate is used as a working cavity, hydraulic oil is filled in the working cavity, the interior of the hydraulic cylinder body below the partition plate is used as a pressure relief compensation cavity, a first piston is assembled in the working cavity in a vertical sliding mode, the top of the first piston is connected with a piston rod, the piston rod upwards penetrates out of the hydraulic cylinder body and is connected with an automobile body, the bottom of the hydraulic cylinder body is connected with an automobile suspension, the first piston is provided with a flow valve and an expansion valve which are used for communicating the upper portion and the lower portion of the working cavity of the first piston, the partition plate is provided with a compression valve and a compensation valve which are used for communicating the working cavity and the pressure relief compensation cavity, the interior of the pressure relief compensation cavity is internally provided with a second piston in a vertical sliding mode, and hydraulic oil is filled in the pressure relief compensation cavity above the second piston, a spring is connected between the second piston and the bottom of the pressure relief compensation cavity.
Or, the vertical slip in the pressure release compensation intracavity of second piston below is equipped with the third piston, spring coupling is between third piston and pressure release compensation intracavity bottom, the second piston top surface is established to thrust rolling plane, the coaxial fixedly connected with pivot in second piston bottom, and the pivot lower extreme rotates to be installed in third piston central point and puts, and the pivot overcoat is equipped with the torsional spring, and torsional spring one end is fixed in the third piston, the torsional spring other end is fixed in pivot or second piston.
According to the invention, the improvement is carried out on the basis of the barrel type hydraulic shock absorber in the prior art, the second piston is vertically assembled in a sliding manner in the pressure relief compensation cavity of the hydraulic cylinder body, hydraulic oil is filled in the pressure relief compensation cavity above the second piston, the pressure relief compensation cavity below the second piston is a cavity, and a spring is connected between the second piston and the bottom in the pressure relief compensation cavity.
In the invention, the part in the pressure relief compensation cavity above the second piston is actually used as an effective working part. When the hydraulic cylinder body moves upwards and hydraulic oil in the lower part A of the working cavity below the first piston flows to the pressure relief compensation cavity through the compression valve, the second piston in the pressure relief compensation cavity moves downwards, and therefore the spring is compressed. The effective working part of the pressure relief compensation cavity is increased when hydraulic oil flows, and the flow of the hydraulic oil can be kept in such a way, so that the problem of too fast damping attenuation is avoided.
When the hydraulic cylinder body moves upwards, the pressure in the working cavity lower part A below the first piston is reduced, the spring resets to push the second piston to move upwards, so that the hydraulic oil of the effective working part of the pressure relief compensation cavity actively flows into the working cavity lower part A through the compensation valve, the hydraulic oil in the pressure relief compensation cavity can be promoted to be quickly compensated to the working cavity lower part A through the mode, and the damping recovery speed of the shock absorber is improved.
Meanwhile, in the invention, the top surface of the second piston is a thrust rotation surface, and when the thrust rotation surface receives a force in the vertical direction, the second piston can slide downwards and rotate. Because the second piston is rotatably arranged on the third piston through the rotating shaft, when hydraulic oil in the lower part A of the working cavity flows into the pressure relief compensation cavity, the second piston and the third piston integrally slide downwards to compress the spring, and simultaneously the second piston rotates, so that the torsional spring is twisted and deformed when the second piston rotates, vibration is absorbed by the torsional spring, and the damping effect is further improved. When the hydraulic oil in the pressure relief compensation cavity flows to the lower part A of the working cavity, the torsion spring resets.
Compared with the prior art, the invention can avoid the problem of too fast damping attenuation of the shock absorber by enlarging the flowing space change of the hydraulic oil, and can improve the damping recovery speed at the same time, thereby improving the damping effect of the shock absorber.
Drawings
FIG. 1 is a front cross-sectional view of a prior art shock absorber cartridge for an automobile.
Fig. 2 is a front cross-sectional view of the inventive base structure.
Figure 3 is a front cross-sectional view of the basic structure of the invention in its operating condition with the wheels moving upwards.
Figure 4 is a front cross-sectional view of the basic structure of the invention in its working position with the wheels moving downwards.
Fig. 5 is a front sectional view of the structure of the present invention when a third piston is added.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in figure 2, the barrel type hydraulic shock absorber for the automobile comprises a hydraulic cylinder body 1 which is vertical in the axial direction, a partition plate which partitions the interior of the hydraulic cylinder body 1 into an upper section and a lower section is arranged in the hydraulic cylinder body 1, the interior of the hydraulic cylinder body 1 above the partition plate is used as a working cavity, hydraulic oil is filled in the working cavity, and the interior of the hydraulic cylinder body 1 below the partition plate is used as a pressure relief compensation cavity 8.
Vertical slip is equipped with first piston 2 in the working chamber, and first piston divide into working chamber lower part A and working chamber upper portion B with the working chamber, and the piston rod 3 at 2 tops of first piston upwards wears out and connects the automobile body behind the hydraulic cylinder body 1, and automotive suspension is connected to 1 bottom of hydraulic cylinder body. The first piston 2 is provided with a flow valve 4 and an extension valve 5 which are used for communicating the lower part A and the upper part B of the working cavity, and the partition plate is provided with a compression valve 6 and a compensation valve 7 which are used for communicating the working cavity and a pressure relief compensation cavity 8.
The second piston 9 is vertically assembled in the pressure relief compensation cavity 8 in a sliding manner, the second piston 9 divides the interior of the pressure relief compensation cavity 8 into an upper part and a lower part, hydraulic oil is filled in the pressure relief compensation cavity above the second piston 9, the pressure relief compensation cavity above the second piston 9 is a cavity, and a spring 10 is connected between the bottom in the second piston 9 and the pressure relief compensation cavity 8.
When the wheel moves upwards, the volume of the lower part A of the working chamber is compressed, the volume of the upper part of the working chamber B is expanded, part of hydraulic oil in the lower part A of the working chamber is discharged to the upper part B of the working chamber through the flow valve 4, and the rest part of hydraulic oil is discharged to the pressure relief compensation chamber 8 above the second piston 9 through the compression valve 6, as shown in figure 3. At this moment, the second piston 9 in the pressure relief compensation cavity 8 slides downwards, so that the spring 10 is compressed, the flowing space of hydraulic oil is enlarged, the flowing quick attenuation of the hydraulic oil is avoided, and the problem of quick attenuation of damping performance can be avoided.
As shown in fig. 4, when the wheel moves upward, working chamber upper portion B is compressed, thereby the internal pressure of working chamber lower portion a is reduced, hydraulic oil in working chamber upper portion B flows into working chamber lower portion a through expansion valve 5, hydraulic oil in working chamber upper portion B can't fill up the volume that enlarges from working chamber lower portion a completely, this moment because working chamber lower portion a internal pressure reduces, spring 10 resets, it passes through compensating valve 7 and flows into working chamber lower portion a to promote the hydraulic oil in the pressure release compensation intracavity above second piston 9 through second piston 9, thereby can make hydraulic oil compensate to working chamber lower portion a fast, thereby improve damping recovery ability.
As shown in fig. 2 to 4, an upper limit ring seat 11 is disposed on the inner wall of the pressure relief compensation cavity 8 above the second piston 9, a lower limit ring seat 12 is disposed on the inner wall of the pressure relief compensation cavity 8 at the bottom, and the upper limit seat 11 and the lower limit seat 12 are made of rubber materials and have buffering and limiting effects on the second piston 9.
A plurality of vertically extending guide rails 13 are arranged on the inner wall of the pressure relief compensation cavity 8 between the upper limiting ring seat 11 and the lower limiting ring seat 12, the edge of the second piston 9 is slidably clamped on the guide rails 13 at the corresponding positions through bayonets, and the guide rails 13 play a role in supporting the second piston 9 to slide.
As shown in fig. 5, a modified structure of the present invention is that a third piston 14 is vertically slidably mounted in a pressure relief compensation chamber below the second piston 9, and a spring 10 is vertically connected between the third piston 14 and the bottom of the pressure relief compensation chamber 8.
The top surface of the second piston 9 is a thrust rotation surface, the thrust rotation surface is two height gradually-changing surfaces 15 which are symmetrical with each other relative to the center point of the second piston 9, the two height gradually-changing surfaces 15 are preferably arranged to be closely attached to the edge of the top surface of the second piston 9, and the heights of the two height gradually-changing surfaces 15 are gradually reduced in the clockwise direction or the anticlockwise direction. According to the force analysis, when a vertical downward force acts on the thrust rotating surface, the vertical downward force can be decomposed into two component forces which are tangent to the acting point and perpendicular to the tangent direction, wherein the component force tangent to the acting point can be decomposed into two forces in the horizontal direction and the vertical direction, and the horizontal force can enable the second piston 9 to rotate.
Therefore, in the invention, the bottom of the second piston 9 is coaxially and fixedly connected with a rotating shaft 16, the center position of the third piston 14 is provided with a through hole and is coaxially assembled with a thrust bearing 17, and the lower end of the rotating shaft 16 is rotatably arranged in a shaft ring of the thrust bearing 17. A torsion spring 18 is sleeved outside the rotating shaft 16, one end of the torsion spring 18 is fixed on the third piston 14, and the other end of the torsion spring 18 is fixed on the rotating shaft 16 or the second piston 9.
When hydraulic oil flows into the pressure relief compensation cavity 8 from the lower part A of the working cavity, the second piston 9 is subjected to a downward force, so that the second piston 9 and the third piston 14 integrally slide downwards to compress the spring 10, and simultaneously, the second piston 9 rotates to make the torsion spring 18 deform in a torsional mode, so that vibration energy is further absorbed. When the hydraulic oil can be discharged to the pressure of the compensation chamber 8 and flows into the lower part A of the working chamber, the torsion spring 18 is reset.
Although the invention can effectively relieve the damping from fast attenuation and improve the damping recovery speed, the pressure relief compensation cavity needs a larger space due to the need of providing a space for the second piston to move. Therefore, the hydraulic cylinder body has the defect of large occupied space, and further requirements on the properties such as strength and the like of the material are also required.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (6)
1. The utility model provides a car cylinder hydraulic shock absorber, includes vertical hydraulic cylinder body, is equipped with in the hydraulic cylinder body and divides into two sections baffle from top to bottom with the inside partition of hydraulic cylinder body, and the hydraulic cylinder body of baffle top is inside as the working chamber, and the working chamber is filled with hydraulic oil, and the hydraulic cylinder body of baffle below is inside as pressure release compensation chamber, the vertical slip of working chamber is equipped with first piston, and first piston top is connected with the piston rod, and the piston rod upwards wears out hydraulic cylinder body and connects the automobile body, automobile suspension is connected to hydraulic cylinder body bottom, flow valve, the valve that stretches that is used for communicateing the upper and lower part working chamber of first piston are installed to first piston, and compression valve, the compensating valve that are used for communicateing working chamber and pressure release compensation chamber are installed to the baffle, its characterized in that: the pressure relief compensation cavity is vertically assembled with a second piston in a sliding mode, hydraulic oil is filled in the pressure relief compensation cavity above the second piston, and a spring is connected between the second piston and the bottom of the pressure relief compensation cavity.
2. The hydraulic shock absorber of claim 1, wherein: an upper limiting ring seat is arranged at the position, above the second piston, of the inner wall of the pressure relief compensation cavity, and a lower limiting ring seat is arranged at the position, at the bottom, of the inner wall of the pressure relief compensation cavity.
3. The hydraulic shock absorber of claim 1, wherein: the pressure relief compensation intracavity wall is located and is equipped with the vertical guide rail that extends of multichannel between the upper and lower spacing ring seat, second piston border corresponds every guide rail position and is equipped with the bayonet socket respectively, and second piston border bayonet socket slides and clamps in corresponding position guide rail.
4. The hydraulic shock absorber of claim 1, wherein: vertical slip is equipped with the third piston in the pressure release compensation intracavity of second piston below, spring coupling is between third piston and pressure release compensation intracavity bottom, second piston top surface is established to thrust rolling plane, the coaxial fixedly connected with pivot in second piston bottom, and the pivot lower extreme rotates to be installed in third piston central point and puts, and the pivot overcoat is equipped with the torsional spring, and torsional spring one end is fixed in the third piston, the torsional spring other end is fixed in pivot or second piston.
5. The hydraulic shock absorber of claim 4, wherein: the thrust rotating surface of the top surface of the second piston is two mutually symmetrical height gradually-changing surfaces, and the heights of the two height gradually-changing surfaces are gradually reduced in the clockwise direction or the anticlockwise direction.
6. The hydraulic shock absorber of claim 4, wherein: and the center of the third piston is provided with a thrust bearing through a through hole, and the lower end of the rotating shaft is coaxially fixed in a shaft ring of the thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749713.8A CN113431862B (en) | 2021-07-02 | 2021-07-02 | Automobile cylinder type hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110749713.8A CN113431862B (en) | 2021-07-02 | 2021-07-02 | Automobile cylinder type hydraulic shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113431862A true CN113431862A (en) | 2021-09-24 |
| CN113431862B CN113431862B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110749713.8A Active CN113431862B (en) | 2021-07-02 | 2021-07-02 | Automobile cylinder type hydraulic shock absorber |
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| CN (1) | CN113431862B (en) |
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| CN106704445A (en) * | 2017-03-31 | 2017-05-24 | 张策 | Damper |
| CN107740836A (en) * | 2017-11-22 | 2018-02-27 | 桂林电子科技大学 | Gas-liquid vibration absorber |
| CN207989626U (en) * | 2018-04-02 | 2018-10-19 | 辽宁机电职业技术学院 | A kind of floating piston damper |
| CN108791138A (en) * | 2018-07-09 | 2018-11-13 | 阮忠诚 | A method of improving running car stationarity |
| CN209943405U (en) * | 2019-05-19 | 2020-01-14 | 孟光红 | Bidirectional sleeve damping device for automobile |
| CN212373580U (en) * | 2020-04-16 | 2021-01-19 | 浙江金棒运动器材有限公司 | High-reliability hydraulic damping toy car for children |
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| CN113431862B (en) | 2023-09-26 |
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