CN217029774U

CN217029774U - Throttling type liquid damping shock absorber

Info

Publication number: CN217029774U
Application number: CN202220388542.0U
Authority: CN
Inventors: 叶信豹; 叶江云
Original assignee: Jiangsu Novotel Auto Parts Co ltd
Current assignee: Jiangsu Novotel Auto Parts Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-22
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses a throttling type liquid damping shock absorber, which relates to the field of shock absorber devices and comprises a piston rod, a piston cylinder and a piston plate fixedly connected with one end of the piston rod, wherein connecting bolts are arranged at two ends of the shock absorber, the piston cylinder is divided into an outer cylinder and an inner cylinder, an end socket is arranged at the top of the piston cylinder, the piston plate is provided with a damping hole, at least one group of adjusting structures are arranged in the damping hole, each adjusting structure comprises a spring and an annular seat, the annular seat and the piston plate are integrally formed, the annular seat is arranged in the damping hole, the annular seat is fixedly provided with the spring, the other end of the spring is fixedly provided with a ball body, the ball body does not enter the damping hole under the non-stress state, the size of the cross section of the ball body is smaller than that of the damping hole, the flow cross section area of oil passing through the damping hole is changed, the adjusting structures can increase damping force by changing the flow area of the oil passing through the damping hole, and can increase the damping force when the ball body enters a certain volume of the damping hole under the pressure, the shock absorber achieves a better shock absorption effect.

Description

Throttling type liquid damping shock absorber

Technical Field

The utility model relates to the field of shock absorber devices, in particular to a throttling type liquid damping shock absorber.

Background

The shock absorber is divided into two types of hydraulic shock and inflation shock absorber from the angle of the damping material, and the shock absorber with variable damping is mainly used for inhibiting the shock generated when the spring absorbs the shock and rebounds and the impact from the road surface.

The existing throttling type liquid damping shock absorber is characterized in that a piston rod with a piston plate is inserted into a piston cylinder, the piston cylinder is filled with oil, the piston plate is provided with a damping hole, two parts of spaces separated by the piston plate can be supplemented with each other, and damping is generated when viscous liquid passes through the damping hole.

In the existing throttling type liquid damping shock absorber, the size of a damping hole on a piston plate is fixed, when the shock absorber works, the passing area of oil flowing through the damping hole is fixed, and when the shock absorber is subjected to pressure change, the damping force is changed slightly, so that the best shock absorption effect cannot be achieved.

In view of the above problems, the present invention provides a fluid-damping shock absorber of the throttling type.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a throttling type liquid damping shock absorber, when the shock absorber is not subjected to pressure or is subjected to smaller pressure, the oil liquid between two cavities in a piston tank flows little, so that the pressure applied to a ball body is small, the ball body cannot enter a damping hole, the oil liquid can not be influenced to pass through the damping hole, when the shock absorber is subjected to larger pressure, namely, the oil liquid between the two cavities in the piston tank flows little, the pressure applied to the ball body is enough to enable the ball body to enter the damping hole for a certain volume, the flow area when the oil liquid flows through the damping hole can be reduced, larger damping force can be obtained, a better shock absorption effect can be achieved, and the problems in the background art can be solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a throttling type liquid damping shock absorber comprises a piston rod, a piston cylinder and a piston plate fixedly connected to one end of the piston rod, wherein connecting bolts are arranged at two ends of the shock absorber, the piston cylinder is divided into an outer cylinder and an inner cylinder, a sealing head is arranged at the top of the piston cylinder, a damping hole is formed in the piston plate, and at least one group of adjusting structures are arranged in the damping hole;

the adjusting structure comprises a spring and an annular seat, the annular seat and the piston plate are integrally formed, the annular seat is positioned in the damping hole, the spring is fixedly arranged on the annular seat, the other end of the spring is fixedly provided with a ball, the ball does not enter the damping hole when the spring is in an unstressed state, and the cross section of the ball is smaller than the damping hole;

furthermore, the ball body enters the damping hole for a certain volume according to the stress size in a pressed state, but does not hinder the medium circulation in the damping hole.

Furthermore, a movable wall is fixedly installed at one end, far away from the piston plate, of the piston rod, and the diameter of an inner ring on the movable wall is larger than that of an outer ring of the outer cylinder.

Furthermore, the bottom of the inner cylinder is fixedly provided with a bottom valve, and the ball body is arranged on one side of the piston plate close to the bottom valve.

Furthermore, a protection wall is fixedly installed at the bottom of the outer cylinder, and the diameter of an inner ring of the protection wall is larger than that of an outer ring of the movable wall.

Furthermore, the inner wall of the protection wall is provided with an integrally formed convex block, an arc-shaped groove is formed in the movable wall at the position corresponding to the convex block, and the arc-shaped groove is consistent with the arc-shaped block at the top of the convex block in shape and size.

Furthermore, a plurality of groove bodies are arranged at the bottom of the inner cylinder and communicated with the outer cylinder, oil is fully filled in the inner cylinder, and oil is not fully filled in the outer cylinder.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides a throttling type liquid damping shock absorber, which comprises a spring and an annular seat, wherein the annular seat and a piston plate are integrally formed, the annular seat is positioned in a damping hole, the spring is fixedly arranged on the annular seat, a ball body is fixedly arranged at the other end of the spring, the ball body does not enter the damping hole under the unstressed state, the cross section of the ball body is smaller than that of the damping hole, the size of the ball body entering the damping hole is determined according to the pressure applied to the ball body, the flow cross section area of oil passing through the damping hole is changed, the damping force can be increased by changing the flow area of the oil passing through the damping hole through the adjusting structure, and the damping force can be increased when the ball body enters the damping hole for a certain volume under the pressure, so that the shock absorber achieves a better shock absorption effect.

2. According to the throttling type liquid damping shock absorber, the protection wall is fixedly arranged at the bottom of the outer cylinder, the diameter of the inner ring of the protection wall is larger than that of the outer ring of the movable wall, the protection wall can better protect the piston cylinder, oil is prevented from flowing out when the piston cylinder is impacted, and the shock absorption effect is prevented from being reduced due to the fact that the oil flows out.

3. According to the throttling type liquid damping shock absorber, the plurality of groove bodies communicated with the outer cylinder are arranged at the bottom of the inner cylinder, oil is filled in the inner cylinder, the outer cylinder is not filled with the oil, a buffering space is provided for the shock absorber when the shock absorber performs shock absorption, and the service life of parts of the shock absorber is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the adjustment structure of the case of the present invention;

FIG. 3 is a schematic front view of an adjustment mechanism of the present invention;

fig. 4 is a schematic structural diagram of the movable wall and the protective wall of the present invention.

In the figure: 1. a piston rod; 2. a piston plate; 21. a damping hole; 22. an annular seat; 3. a bottom valve; 4. an inner barrel; 5. an outer cylinder; 6. sealing the end; 7. a protective wall; 71. a bump; 8. a movable wall; 81. an arc-shaped slot; 9. connecting a bolt; 10. a spring; 11. a sphere.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a throttling type liquid damping shock absorber comprises a piston rod 1, a piston cylinder and a piston plate 2 fixedly connected to one end of the piston rod 1, wherein connecting bolts 9 are arranged at two ends of the shock absorber, the piston cylinder is divided into an outer cylinder 5 and an inner cylinder 4, an end socket 6 is arranged at the top of the piston cylinder, a damping hole 21 is formed in the piston plate 2, and at least one group of adjusting structures is arranged in the damping hole 21;

the regulation structure includes spring 10 and annular seat 22,

annular seat

22 and 2 integrated into one piece of piston plate, annular seat 22 is located damping hole 21, annular seat 22 fixed mounting has spring 10, spring 10's other end fixed mounting has spheroid 11, spring 10 does not get into in the damping hole 21 spheroid 11 under the unstressed state, spheroid 11 cross section size is less than the size of damping hole 21, spheroid 11 is according to the pressure size that receives, the volume size who gets into damping hole 21 has been decided, the circulation sectional area when changing fluid and passing through damping hole 21, the regulation structure can increase damping force through the flow area who changes fluid and pass through damping hole 21, can increase damping force when pressurized energy messenger spheroid 11 gets into the certain volume of damping hole 21, make the bumper shock absorber reach better shock attenuation effect.

The ball 11 enters the damping hole 21 with a certain volume according to the stress in a pressed state, but does not obstruct the circulation of the medium in the damping hole 21, and when the ball 11 enters the damping hole 21 in a pressed state, the oil liquid can still pass through the damping hole 21 to achieve the damping effect.

One end of the piston rod 1, which is far away from the piston plate 2, is fixedly provided with a movable wall 8, the diameter of an inner ring on the movable wall 8 is larger than that of an outer ring of the outer barrel 5, the movable wall 8 better protects the piston rod 1, and the piston rod 1 is prevented from being damaged in an unexpected state.

The bottom of the inner cylinder 4 is fixedly provided with a bottom valve 3, and the ball body 11 is arranged on one side of the piston plate 2 close to the bottom valve 3 and arranged at the bottom of the piston plate 2, so that the working operation of the adjusting structure is ensured.

The bottom fixed mounting of urceolus 5 has protecting wall 7, and the inner circle diameter of protecting wall 7 is greater than the outer lane diameter of activity wall 8, and protecting wall 7 can be better protects a piston cylinder, avoids the piston cylinder to cause fluid to flow when receiving the striking, avoids because the shock attenuation effect that fluid flow leads to reduces.

The inner wall of the protection wall 7 is provided with an integrally formed convex block 71, the movable wall 8 at the position corresponding to the convex block 71 is provided with an arc-shaped groove 81, the arc-shaped groove 81 is in the same size with the arc-shaped block at the top of the convex block 71, and the protection wall 7 and the movable wall 8 are in sliding connection through the convex block 71 and the arc-shaped groove 81 which are arranged on the protection wall 7, so that the shock absorber can be protected more comprehensively.

The bottom of the inner barrel 4 is provided with a plurality of groove bodies communicated with the outer barrel 5, the inner barrel 4 is filled with oil, the outer barrel 5 is not filled with oil, a buffer space is provided for the shock absorber when the shock absorber performs shock absorption, and the service life of parts of the shock absorber is prolonged.

To sum up: when the bumper shock absorber does not receive pressure or receives pressure less, fluid circulation between two cavities in the piston jar is few, so the pressure that spheroid 11 received is little, spheroid 11 can not enter into the damping hole 21 in, can not influence fluid and pass through damping hole 21, when the bumper shock absorber received pressure great, promptly the fluid circulation between two cavities in the piston jar is few, the pressure that spheroid 11 received is enough to make spheroid 11 enter into the damping hole 21 in certain volume, flow area when can reducing fluid circulation damping hole 21, in order to obtain bigger damping force, better shock attenuation effect has been reached.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A throttling type liquid damping shock absorber comprises a piston rod (1), a piston cylinder and a piston plate (2) fixedly connected to one end of the piston rod (1), wherein connecting bolts (9) are arranged at two ends of the shock absorber, and the throttling type liquid damping shock absorber is characterized in that the piston cylinder is divided into an outer cylinder (5) and an inner cylinder (4), a seal head (6) is arranged at the top of the piston cylinder, a damping hole (21) is formed in the piston plate (2), and at least one group of adjusting structures is arranged in the damping hole (21);

the adjusting structure comprises a spring (10) and an annular seat (22), the annular seat (22) and a piston plate (2) are integrally formed, the annular seat (22) is located in a damping hole (21), the annular seat (22) is fixedly provided with the spring (10), the other end of the spring (10) is fixedly provided with a ball body (11), the spring (10) does not enter the damping hole (21) when the ball body (11) is in a non-stressed state, and the cross section of the ball body (11) is smaller than the damping hole (21).

2. A fluid-throttled shock absorber according to claim 1, wherein: the ball (11) enters the damping hole (21) for a certain volume according to the stress magnitude in a pressed state, but does not obstruct the circulation of the medium in the damping hole (21).

3. A fluid-damping shock absorber according to claim 1, wherein a movable wall (8) is fixedly mounted on the end of the piston rod (1) remote from the piston plate (2), and the diameter of the inner ring of the movable wall (8) is greater than the diameter of the outer ring of the outer cylinder (5).

4. A fluid-throttled shock absorber according to claim 1, wherein: the bottom of the inner cylinder (4) is fixedly provided with a bottom valve (3), and the ball body (11) is arranged on one side of the piston plate (2) close to the bottom valve (3).

5. A fluid-throttled shock absorber according to claim 1, wherein: the bottom of the outer barrel (5) is fixedly provided with a protective wall (7), and the diameter of the inner ring of the protective wall (7) is larger than that of the outer ring of the movable wall (8).

6. The throttling fluid damping shock absorber of claim 5, wherein: the inner wall of the protective wall (7) is provided with an integrally formed convex block (71), the movable wall (8) at the position corresponding to the convex block (71) is provided with an arc-shaped groove (81), and the arc-shaped groove (81) is consistent with the arc-shaped block at the top of the convex block (71) in shape and size.

7. A fluid-throttled shock absorber according to claim 1, wherein: a plurality of groove bodies are arranged at the bottom of the inner cylinder (4) and communicated with the outer cylinder (5), oil is fully filled in the inner cylinder (4), and oil is not fully filled in the outer cylinder (5).