Bidirectional frequency sensitive type shock absorber

Abstract

The utility model relates to a bidirectional frequency sensitive type shock absorber which effectively solves the problem that an existing frequency sensitive type shock absorber can only change recovery damping singly. Which comprises a piston rod, an oil seal, a guider, a working cylinder, an oil storage cylinder, a recovery main valve, a recovery frequency sensitive valve, a compression main valve, a compression frequency sensitive valve, a working cylinder with a hole, a base and a base, and is characterized in that the recovery frequency sensitive valve enables the recovery main valve to be fixedly connected with the piston rod through threads; an L-shaped oil inlet hole is formed in the end, close to the recovery main valve, of the piston rod, the piston rod is communicated with the recovery main valve, the recovery main valve and the recovery frequency sensitive valve can move in the working cylinder in a reciprocating mode, one end of the working cylinder abuts against the guider, and the compression frequency sensitive valve is connected with the compression main valve through a compression main valve screw. The compression frequency sensitive valve and the compression main valve are fixed at the bottom of the shock absorber; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock absorber technical field, especially a bidirectional frequency sensitive type shock absorber. BACKGROUND

[0002] The automobile suspension system generally adopts double cylinder hydraulic shock absorber, the piston rod will reciprocate in the working cylinder in the working process of shock absorber, and the oil liquid in the oil storage cylinder generates damping force through the valve system. However, the existing frequency sensitive type shock absorber does not fully consider the influence of vibration frequency on damping when the shock absorber recovers and compresses, and most of the frequency sensitive type shock absorbers can only automatically change the damping when recovering, but cannot change the damping when compressing, which makes the road condition adaptability of the automobile slightly poor. SUMMARY

[0003] In view of the above situation, in order to make up for the deficiency of prior art, the utility model discloses a bidirectional frequency sensitive type shock absorber, which effectively solves the problem that the existing frequency sensitive type shock absorber can only change the recovery damping.

[0004] The technical scheme solved by the utility model is that the utility model discloses a piston rod, an oil seal, a guider, a working cylinder, an oil storage cylinder, a recovery main valve, a recovery frequency sensitive valve, a compression main valve, a compression frequency sensitive valve, a working cylinder with a hole and a base and a base, characterized in that the recovery frequency sensitive valve is fastened and connected with the recovery main valve and the piston rod through threads, an L-shaped oil inlet hole is formed in one end of the piston rod close to the recovery main valve and communicates with the recovery frequency sensitive valve, the recovery main valve and the recovery frequency sensitive valve can reciprocate in the working cylinder, one end of the working cylinder abuts against the guider, the other end is interference-fitted with the compression main valve, the base is located at the bottom of the oil storage cylinder, the base is located on the base, the upper part of the oil storage cylinder is curled and pressed against the oil seal to form an integral whole, and the recovery main valve and the compression main valve separate the working cylinder into a compression lower cavity, a piston lower cavity and a piston upper cavity.

[0005] Compared with the prior art, the utility model has the beneficial effects that one frequency sensitive valve is designed for the main recovery main valve and the main compression main valve of the shock absorber respectively to control the oil flow when the shock absorber recovers and compresses, thereby automatically adjusting the recovery and compression damping of the shock absorber, and the stretching and compression damping can be self-adaptively adjusted, the stretching damping size can be adjusted, the compression damping size can be adjusted, and the driving experience and control level of the automobile can be obviously improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is the front view of the utility model.

[0007] Figure 2 is a flow channel schematic diagram of the recovery valve system in the stretching of the utility model.

[0008] Figure 3 is a recovery frequency sensitive valve schematic diagram in the utility model.

[0009] Figure 4 is a flow channel schematic diagram of the compression valve system in the compression of the utility model.

[0010] Figure 5 is a compression frequency sensitive valve schematic diagram in the utility model.

[0011] Figure 6 is a compression valve system assembly schematic diagram in the utility model. DETAILED DESCRIPTION

[0012] In order to make the above purpose, features and advantages of the utility model more apparent, easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model. However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed base body implementation.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0014] The specific embodiments of the utility model are further described in detail below in conjunction with the drawings.

[0015] By Figures 1 to 6The piston rod 101, oil seal 102, guide 103, working cylinder 104, oil storage cylinder 105, recovery main valve 106, recovery frequency sensitive valve 107, compression main valve 108, compression frequency sensitive valve 109, hole working cylinder 110, base 111 and base 112 are characterized in that the recovery frequency sensitive valve 107 is connected with the recovery main valve 106 and the piston rod 101 by thread, the L-shaped oil inlet hole 101.1 is opened in the end of the piston rod 101 close to the recovery main valve and communicates with the recovery main valve, the recovery main valve 106 and the recovery frequency sensitive valve 107 can reciprocate in the working cylinder 104, one end of the working cylinder 104 abuts against the guide 103, the other end is interference fit with the compression main valve 108, the base 112 is located at the bottom of the oil storage cylinder 105, the base 111 is fixed on the base 112, the upper part of the oil storage cylinder 105 is crimped to press the oil seal 102 to form an integral whole, the recovery main valve 106 and the compression main valve 108 divide the working cylinder 104 into the compression lower cavity 1, the piston lower cavity 2 and the piston upper cavity 3.

[0016] Preferably, the compression main valve 108 is interference fit with the hole working cylinder 110 and the working cylinder 104, respectively, wherein the hole working cylinder 110 has several through holes on the side to facilitate the flow of working fluid, and the compression main valve 108 and the compression frequency sensitive valve 107 are not movable.

[0017] Preferably, the base 111 is interference fit with the hole working cylinder 110 and is placed on the base 112.

[0018] Preferably, the compression lower cavity 1, the piston lower cavity 2 and the piston upper cavity 3 are filled with a part of oil.

[0019] Preferably, the recovery main valve 106 and the compression main valve 108 are one-way damping valves, respectively.

[0020] Preferably, the recovery frequency sensitive valve 107 and the compression frequency sensitive valve 109 are one-way valves, and can change the opening of the internal flow channel according to the movement frequency, thereby affecting the flow of oil.

[0021] Preferably, the oil seal 102 and the guide 103 are arranged on the piston rod 101, wherein the oil seal 102 is interference fit with the piston rod 101, the guide 103 is clearance fit with the piston rod 101, and the guide 103 is clearance fit with the working cylinder 104.

[0022] Preferably, the compression main valve 108 is interference fit with the hole working cylinder 110, and the compression frequency sensitive valve 109 is connected with the compression main valve seat 108.2 through the compression main valve screw 108.1.

[0023] Preferably, the recovery frequency sensitive valve 107 and the compression frequency sensitive valve 109 each comprise a floating valve system unit comprising an elastic valve plate.

[0024] In use, the recovery frequency sensitive valve 107 is taken as an example, and is configured to affect the pressure difference between the upper chamber 107b and the lower chamber 107a due to the large or small amount of oil flowing into the lower chamber 107a, thereby reducing or increasing the opening degree of the fluid passage 11-1 connecting the lower chamber 2 of the damper piston and the upper chamber 3 of the damper piston, so as to affect the size of the damper recovery damping value.

[0025] When the damper is stretched, the oil in the upper chamber 3 of the piston mainly flows into the lower chamber 2 of the piston through the flow channel 10 of the recovery main valve 106, and part of the oil flows into the inner cavity 107b of the frequency sensitive valve 107 through the oil inlet hole 101.1. When the damper is stretched at low frequency, the oil flows into the chamber 107a through the flow channel 11-2 and is filled for a long time, so that the internal pressure increases, the floating valve system unit 107.2, 107.3 and 107.4 is lifted, the opening degree of the passage 11-1 between the valve body 107.1 is small or even closed, the oil flow resistance is large, and the stretching damping force is large. When stretched at high frequency, the internal pressure of the chamber 107a is small due to short filling time, the floating valve system unit hardly floats or floats a small distance, the opening degree of the passage 11-1 is large, the oil flow resistance is small, and the stretching damping force is small. When stretched, the oil in the compression lower chamber 1 flows into the lower chamber 2 of the piston through the compression main valve 108, and the compression main valve 108 is a one-way damping valve, which does not produce damping effect when stretched.

[0026] Similarly, when the damper is compressed, the oil in the compression lower chamber 2 mainly flows into the lower chamber 1 of the piston through the flow channel 12 of the compression main valve 108, and part of the oil flows into the inner cavity 109b of the frequency sensitive valve 109 through the flow channel 13 of the compression valve screw 108.1. When the damper is compressed at low frequency, the oil flows into the chamber 109a through the flow channel 13-2 and is filled for a long time, so that the internal pressure increases, the floating valve system unit 109.2, 109.3 and 109.4 is lifted, the opening degree of the passage 13-1 between the valve body 109.1 is small or even closed, the oil flow resistance is large, and the compression damping force is large. When stretched at high frequency, the internal pressure of the chamber 109a is small due to short filling time, the floating valve system unit hardly floats or floats a small distance, the opening degree of the passage 13-1 is large, the oil flow resistance is small, and the compression damping force is small.

[0027] Compared with the prior art, the utility model discloses the beneficial effect is: through being designed one frequency sensitive valve in the shock absorber main recovery main valve and main compression main valve respectively to control the flow of shock absorber recovery and compression, thereby automatically adjusting the recovery and compression damping of shock absorber can carry out the self -adaptation adjustment of stretching and compression damping, can adjust the stretching damping size, also can adjust the compression damping size, can obviously improve the driving experience and the control level of car, this structure is simple, and the novel, convenient to use, and practicality is strong.

[0028] It should be noted that, according to the need of implementation, each component described in the embodiments of the utility model can be split into more components, or two or more components or parts of components can be combined into new components, to realize the purpose of the embodiments of the utility model.

[0029] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be according to the attached claims.

Claims

1. A bidirectional frequency sensitive shock absorber comprising a piston rod (101), an oil seal (102), a guide (103), a working cylinder (104), an oil reservoir cylinder (105), a restoring main valve (106), a restoring frequency sensitive valve (107), a compression main valve (108), a compression frequency sensitive valve (109), a perforated working cylinder (110), and a base (111) and a foot (112), characterized in that, The restoring frequency sensitive valve (107) is connected with the restoring main valve (106) and the piston rod (101) by screw thread, the piston rod (101) is provided with an L-shaped oil inlet hole (101.1) near one end of the restoring main valve and communicates with the restoring frequency sensitive valve, the restoring main valve (106) and the restoring frequency sensitive valve (107) can reciprocate in the working cylinder (104), one end of the working cylinder (104) abuts against the guide (103), the other end is in interference fit with the compression main valve (108), the base (112) is located at the bottom of the oil storage cylinder (105), the pedestal (111) is located on the base (112), the upper part of the oil storage cylinder (105) is curled to press the oil seal (102) to form an integral whole, the restoring main valve (106) and the compression main valve (108) divide the working cylinder (104) into the compression lower cavity (1), the piston lower cavity (2) and the piston upper cavity (3).

2. A bi-directional frequency sensitive damper as claimed in claim 1, wherein, The compression main valve (108) is in interference fit with the working cylinder (110) and the working cylinder (104) respectively, the working cylinder (110) has a plurality of through holes on the side surface to facilitate the flow of working fluid, the compression main valve (108) and the compression frequency sensitive valve (109) are not movable.

3. The bidirectional frequency-sensitive damper of claim 1, wherein, The pedestal (111) is in interference fit with the working cylinder (110) and is placed on the base (112).

4. The bi-directional frequency sensitive shock absorber of claim 1, wherein, The compression lower cavity (1), the piston lower cavity (2) and the piston upper cavity (3) are filled with a part of oil.

5. The bi-directional frequency sensitive shock absorber of claim 1, wherein, The restoring main valve (106) and the compression main valve (108) are one-way damping valves respectively.

6. A bi-directional frequency sensitive damper as defined in claim 1, wherein, The restoring frequency sensitive valve (107) and the compression frequency sensitive valve (109) are one-way valves and can change the opening of the internal flow channel according to the movement frequency, thereby affecting the flow of oil.

7. The bi-directional frequency sensitive shock absorber of claim 1, wherein, The oil seal (102) and the guide (103) are provided on the piston rod (101), the oil seal (102) is in interference fit with the piston rod (101), the guide (103) is in clearance fit with the piston rod (101), and the guide (103) is in clearance fit with the working cylinder (104).

8. The bi-directional frequency sensitive shock absorber of claim 1, wherein, The compression main valve (108) is in interference fit with the working cylinder (110), and the compression frequency sensitive valve (109) is connected with the compression main valve seat (108.2) through the compression main valve screw rod (108.1).

9. The bi-directional frequency sensitive shock absorber of claim 1, wherein, The restoring frequency sensitive valve (107) and the compression frequency sensitive valve (109) both include a floating valve system unit containing an elastic valve plate.

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