Multi-stage adjustable damping shock absorber

Abstract

The utility model discloses a multistage adjustable damping shock absorber which comprises a liquid storage barrel and a working cylinder, a piston rod is movably arranged in the liquid storage barrel, a rebound valve assembly is arranged on the piston rod, the multistage adjustable damping shock absorber further comprises a base, a first connecting end and a second connecting end are arranged on the base, the first connecting end is connected with one end of the liquid storage barrel, and the second connecting end is connected with the other end of the liquid storage barrel. The second connecting end is connected with one end of the working cylinder, a first flow channel communicated with the liquid storage barrel and a second flow channel communicated with the working cylinder are formed in the base, a containing cavity is further formed in the base, the containing cavity is communicated with the first flow channel and the second flow channel, and the compression valve assembly is tightly pressed in the containing cavity by the top cover. A pressure relief hole is formed in the middle of the compression valve assembly, a third flow channel communicated with the pressure relief hole and the second flow channel is arranged on the top cover, a conical adjusting block is arranged at the end, close to the second flow channel, of the corresponding pressure relief hole, the conical adjusting block is connected with a movable iron core in the electromagnetic coil assembly, and an extending part is further arranged on the movable iron core. And a spring is tightly pressed between the extension part and the top cover. According to the utility model, multi-stage damping electric control adjustment of the shock absorber can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber, concretely relates to a multistage adjustable damping shock absorber. BACKGROUND

[0002] The shock absorber is an important component of the automobile suspension system, and is mainly used for realizing damping in the vehicle driving process, and then improving the test driving and riding experience, and ensuring the safe driving of the vehicle. One kind of shock absorber adopts a nitrogen stamping structure, and the damping force of the nitrogen shock absorber is generally a fixed value after production is completed, but the required damping force of the vehicle is different in different road conditions; therefore, a kind of nitrogen shock absorber that can adjust the damping force appears on the market, but the adjusting structure of the screw rotation type is generally adopted, manual operation is required during adjustment, adjustment cannot be realized during driving, and the flexibility and automation of use are poor. UTILITY MODEL CONTENTS

[0003] In view of the deficiencies in the background art, the technical problem to be solved by the utility model is to provide a multistage adjustable damping shock absorber for solving the above problems.

[0004] Therefore, the utility model is realized by adopting the following scheme:

[0005] A multistage adjustable damping shock absorber, comprising a liquid storage cylinder and a working cylinder, a piston rod is movably arranged in the liquid storage cylinder, a restoring valve assembly is arranged on the piston rod, characterized in that: a base is further arranged, a first connecting end and a second connecting end are arranged on the base, the first connecting end is connected with one end of the liquid storage cylinder, the second connecting end is connected with one end of the working cylinder, a first flow channel communicated with the liquid storage cylinder and a second flow channel communicated with the working cylinder are arranged on the base, a placing cavity is further arranged in the base, the placing cavity is communicated with the first flow channel and the second flow channel, a compression valve assembly is further arranged, the compression valve assembly is tightly pressed in the placing cavity by a top cover, a pressure relief hole is arranged in the middle of the compression valve assembly, a third flow channel communicated with the pressure relief hole and the second flow channel is arranged on the top cover, a conical adjusting block is arranged at one end of the pressure relief hole close to the second flow channel, the conical adjusting block is connected with a moving iron core in an electromagnetic coil assembly, an extension is further arranged on the moving iron core, and a spring is tightly arranged between the extension and the top cover.

[0006] A floating piston is arranged in the working cylinder, the floating piston divides the working cylinder into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the second flow channel, and the second inner cavity is filled with nitrogen.

[0007] The first connecting end is threadedly connected with one end of the liquid storage cylinder, and the second connecting end is threadedly connected with one end of the working cylinder, and the first and second connecting ends are coated with a thread fastening agent.

[0008] The conical adjusting block, the moving iron core and the extension are integrally formed.

[0009] The base is further provided with a connecting portion, and the connecting portion is provided with a connecting hole.

[0010] The technical scheme has the advantages that the overall structure of the nitrogen shock absorber is improved, pressure relief type damping adjustment is realized, the damping adjustment structure of the electromagnetic coil type is added, real-time electric adjustment of the damping force can be realized, the adaptability of the damping force can be realized during the driving of the vehicle, and the flexibility of use is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model discloses the following drawings:

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 It is the local enlarged view of the direction of A of the middle. DETAILED DESCRIPTION

[0014] As shown in the drawings, the utility model discloses a multistage adjustable damping shock absorber, including liquid storage cylinder 3 and working cylinder 10, and the piston rod 1 is movably arranged in the liquid storage cylinder 3, and the piston rod 1 is provided with the reset valve assembly 2, still including base 5, and the base 5 is provided with first connecting end 4 and second connecting end 9, and the first connecting end 4 is connected with one end of the liquid storage cylinder 3, and the second connecting end 9 is connected with one end of the working cylinder 10, and the base 5 is provided with the first flow channel 8 in communication with the liquid storage cylinder 3 and the second flow channel 23 in communication with the working cylinder 10, and the base 5 is further provided with the placing cavity 14, and the placing cavity 14 is in communication with the first flow channel 8 and the second flow channel 23, still including compression valve assembly 15, and the compression valve assembly 15 is tightly pressed in the placing cavity 14 by the top cap 24, and the middle part of the compression valve assembly 15 is provided with the pressure relief hole 16, and the top cap 24 is provided with the third flow channel 25 in communication with the pressure relief hole 16 and the second flow channel 23, and the one end of the second flow channel 23 close to the pressure relief hole 16 is provided with the conical adjusting block 17, and the conical adjusting block 17 is connected with the moving iron core 21 in the electromagnetic coil assembly 22, and the moving iron core 21 is further provided with the extension 20, and the spring 18 is tightly arranged between the extension 20 and the top cap 24.

[0015] Further, the working cylinder 10 is provided with a floating piston 12, the floating piston 12 separates the working cylinder 10 into a first inner cavity 11 and a second inner cavity 13, the first inner cavity 11 is communicated with the second flow channel 23, and the second inner cavity 13 is filled with nitrogen. By adopting the above structure, the nitrogen in the working cylinder 10 can be set.

[0016] Further, the first connecting end 4 is threadedly connected with one end of the liquid storage cylinder 3, and the second connecting end 9 is threadedly connected with one end of the working cylinder 10, and the first and second connecting ends are coated with a thread fastening agent. The overall assembly can be facilitated, and the fastening after assembly can be ensured.

[0017] Further, the conical adjusting block 17, the moving iron core 21 and the extension 20 are integrally formed. By adopting the above structure, the overall processing and forming can be facilitated.

[0018] Further, the base 5 is further provided with a connecting portion 7, and the connecting portion 7 is provided with a connecting hole 6. The base 5 can be conveniently connected with other parts of the vehicle suspension system.

[0019] The working principle of the utility model is: in the process of vehicle driving, the suspension system will extrude the piston rod 1 and drive the recovery valve assembly to move, and extrude the damping oil in the liquid storage cylinder 3 to enter the first inner cavity 11 through the first flow channel 8, the compression valve assembly 15 and the second flow channel 23, and push the floating piston 12 to move and extrude the nitrogen in the second inner cavity 13 to compress and pressurize, when the vehicle is in the process of vibration and suspension, the nitrogen in the second inner cavity 13 will extrude the floating piston 12 to move, and the damping oil in the first inner cavity 11 will enter the liquid storage cylinder through the second flow channel, the compression valve assembly and the first flow channel, and extrude the recovery valve assembly to drive the piston rod 1 to move and reset. In the above damping process, the appropriate current of the electromagnetic coil assembly 22 can be controlled to adjust the force applied to the moving iron core 21, the moving iron core 21 moves to the appropriate position under the cooperation of the reset spring 18 and the electromagnetic force of the coil, and then the position of the conical adjusting block 17 is adjusted, the size of the opening of the pressure relief hole 16 is adjusted, and the damping force is adjusted. This adjustment method can realize electric real-time control adjustment, so that it can be adjusted during vehicle driving, and the adjustment operation is more convenient.

Claims

1. A multi-stage adjustable damping shock absorber, comprising a reservoir (3) and a working cylinder (10), wherein a piston rod (1) is movably disposed within the reservoir (3), and a recovery valve assembly (2) is disposed on the piston rod (1), characterized in that: It also includes a base (5), on which a first connecting end (4) and a second connecting end (9) are provided. The first connecting end (4) is connected to one end of the liquid storage cylinder (3), and the second connecting end (9) is connected to one end of the working cylinder (10). The base (5) is provided with a first flow channel (8) communicating with the liquid storage cylinder (3) and a second flow channel (23) communicating with the working cylinder (10). The base (5) also includes a placement cavity (14), which is connected to the first flow channel (8) and the second flow channel (23). It also includes a compression valve assembly (15), which is a compression valve assembly (15) 15) The compression valve assembly (15) is pressed tightly into the placement cavity (14) by the top cover (24). A pressure relief hole (16) is provided in the middle of the compression valve assembly (15). A third flow channel (25) is provided on the top cover (24) and communicates with the pressure relief hole (16) and the second flow channel (23). A conical adjustment block (17) is provided at one end of the pressure relief hole (16) near the second flow channel (23). The conical adjustment block (17) is connected to the moving iron core (21) in the electromagnetic coil assembly (22). An extension (20) is also provided on the moving iron core (21). A spring (18) is tightly pressed between the extension (20) and the top cover (24).

2. The multi-stage adjustable damping vibration damper according to claim 1, characterized in that: The working cylinder (10) is provided with a floating piston (12), which divides the working cylinder (10) into a first inner cavity (11) and a second inner cavity (13). The first inner cavity (11) is connected to the second flow channel (23), and the second inner cavity (13) is filled with nitrogen.

3. The multi-stage adjustable damping vibration damper according to claim 1, characterized in that: The first connecting end (4) is threaded to one end of the liquid storage cylinder (3), and the second connecting end (9) is threaded to one end of the working cylinder (10). Both the first and second connecting ends are coated with thread fastener.

4. The multi-stage adjustable damping vibration damper according to claim 1, characterized in that: The conical adjusting block (17), the moving iron core (21), and the extension (20) are integrally formed structures.

5. A multi-stage adjustable damping vibration damper according to claim 1, characterized in that: A connecting part (7) is also provided on the base (5), and a connecting hole (6) is provided in the connecting part (7).

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