Damping-adjustable shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, and discloses a damping-adjustable shock absorber which comprises a shell, a working cylinder is fixedly connected to the inner bottom of the shell, an oil flow compression bottom valve is fixedly connected to the inner bottom of the working cylinder, an inner cylinder is arranged in the working cylinder, an oil flow overflow hole is formed in one side of the inner cylinder, and an oil flow compression bottom valve is fixedly connected to the oil flow compression bottom valve. A piston valve is slidably connected to the inner wall of the inner cylinder, a piston rod is fixedly connected into the piston valve, and a second oil seal is fixedly connected to the surface of the piston valve. According to the damping-adjustable shock absorber, by rotating the oil flow hardness adjusting valve, the oil flow hardness adjusting valve can control the amount of oil at the moment, so that damping force formed by internal friction among oil molecules is inconsistent, the damping of the shock absorber is adjusted, and the shock absorber can adapt to different road conditions; damping adjustment can be carried out according to the driving condition of an automobile owner, comfort and controllability are freely desirable, impact from the road surface is reduced, and therefore the driving smoothness of the automobile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a shock absorber with adjustable damping. Background Art

[0002] The need for shock absorbers is due to the fact that the spring cannot stabilize immediately, that is to say, after the spring is compressed and released, it will continue to expand and contract for a period of time, so the shock absorber can absorb the vibration caused by the wheels encountering uneven roads, making the ride comfortable.

[0003] The patent network announcement number CN 210510085 U discloses a shock absorber, including an upper hanging ear, a heat dissipation shell and a lower hanging ear, wherein the upper hanging ear is provided with an arc-shaped protrusion on the top, the upper hanging ear is provided with a cylindrical bottom, a conical groove is provided on the cylindrical bottom surface of the upper hanging ear, an air nozzle is provided between the bottom of the conical groove of the upper hanging ear and the cylindrical side wall of the upper hanging ear, a thread is provided inside the air nozzle, the air nozzle is connected to the air nozzle cap through a thread, a through hole is provided at the arc end of the upper hanging ear, the upper hanging ear through hole is interference fit with the upper hanging ear bearing, the upper hanging ear bearing hole of the upper hanging ear bearing is locked on the frame by a screw, the cylindrical end side wall of the upper hanging ear is connected to one end of the heat dissipation shell by a thread, and an upper hanging ear sealing ring is provided between the upper hanging ear and the heat dissipation shell. The beneficial effects of the utility model are convenient maintenance, accelerated heat dissipation efficiency, and improved damping force and impact resistance.

[0004] The applicant believes that the shock absorber has the following disadvantages: the shock absorber is not provided with an oil flow soft or hard regulating valve, which makes it impossible to adjust the damping size, and thus cannot adapt to different road conditions, reducing the controllability of the car and the comfort of the passengers, and has defects. Utility Model Content

[0005] The purpose of the utility model is to provide a shock absorber with adjustable damping to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock absorber with adjustable damping, comprising a shell, a working cylinder is fixedly connected to the bottom of the shell, an oil compression bottom valve is fixedly connected to the bottom of the working cylinder, an inner cylinder is arranged in the working rod, an oil overflow hole is opened on one side of the inner cylinder, a piston valve is slidably connected to the inner wall of the inner cylinder, a piston rod is fixedly connected in the piston valve, a second oil seal is fixedly connected to the surface of the piston valve, a piston valve spring seat is fixedly connected to the bottom of the piston valve, and a piston valve spring is sleeved on the surface of the piston valve spring seat.

[0007] An oil flow hard and soft regulating valve is arranged on the right side of the shell, and the oil flow hard and soft regulating valve includes a valve sleeve, and the valve sleeve is arranged on one side of the oil flow hard and soft regulating valve. A valve core is sleeved inside the valve sleeve, and a sealing member is arranged between the valve sleeve and the valve core. An oil through hole is arranged inside the valve core, and the sealing member is located at the oil through hole and the valve core. A positioning pin groove is arranged on the outer surface of the valve sleeve, and a positioning circular pin is arranged on the surface of the valve core.

[0008] Preferably, the surface of the positioning pin groove is provided with ball holes, and the number of the ball holes is several, and the several ball holes are distributed in a ring shape with equal intervals.

[0009] Preferably, a positioning groove is provided on the surface of the valve core, and the positioning groove corresponds to the valve core oil hole. When the valve core oil hole is connected to the valve sleeve oil hole, the ball enters the positioning groove, and a guide groove for guiding the ball is provided between each adjacent positioning groove. The depth of the guide groove is less than the depth of the positioning groove, and the two ends of the guide groove are respectively connected to one of the positioning grooves.

[0010] Preferably, a first oil seal is fixedly connected to the top of the shell, the piston rod is slidably connected to the first oil seal, a compensation cavity is opened on the right side of the shell, and the valve core is inserted into the compensation cavity.

[0011] Preferably, a guide is fixedly connected to the top of the inner cylinder, the guide is slidably connected to the surface of the piston rod, and a hydraulic limit valve is fixedly connected to the surface of the piston rod.

[0012] Compared with the prior art, the utility model provides a shock absorber with adjustable damping, which has the following features:

[0013] Beneficial effects:

[0014] 1. The damping-adjustable shock absorber can adjust the damping size of the shock absorber by rotating the oil flow soft and hard regulating valve. At this time, the oil flow soft and hard regulating valve can control the amount of oil, so that the damping force formed by the internal friction between the oil molecules is also inconsistent. It can adapt to different road conditions and can adjust the damping according to the driving conditions of the car owner to improve the comfort and controllability at will, and reduce the impact from the road surface, thereby improving the driving smoothness of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 Schematic diagram of the piston rod structure;

[0019] Figure 4 It is a schematic diagram of the piston valve structure;

[0020] Figure 5 This is a structural diagram of the oil flow soft and hard regulating valve;

[0021] Figure 6 It is a schematic diagram of the separation of the soft and hard oil flow regulating valve structure;

[0022] Figure 7 It is a schematic diagram of the separation of the oil flow soft and hard regulating valve structure from an oblique perspective;

[0023] Figure 8 It is a partial structural cross-sectional schematic diagram of the utility model.

[0024] In the figure: 1. piston rod; 2. guide; 3. piston valve; 4. inner cylinder; 5. housing; 6. oil flow compression bottom valve; 7. working cylinder; 8. oil flow soft and hard regulating valve; 9. hydraulic limit valve; 10. oil flow overflow hole; 11. first oil seal; 12. compensation chamber; 13. piston valve spring seat; 14. valve sleeve; 15. positioning pin groove; 16. positioning round pin; 17. valve core; 18. second oil seal; 19. piston valve spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] Embodiment 1:

[0028] Combination Figure 1-7A shock absorber with adjustable damping comprises a shell 5, a working cylinder 7 is fixedly connected to the bottom of the shell 5, an oil compression bottom valve 6 is fixedly connected to the bottom of the working cylinder 7, an inner cylinder 4 is arranged in the working rod, an oil overflow hole 10 is opened on one side of the inner cylinder 4, a piston valve 3 is slidably connected to the inner wall of the inner cylinder 4, a piston rod 1 is fixedly connected in the piston valve 3, a second oil seal 18 is fixedly connected to the surface of the piston valve 3, a piston valve spring seat 13 is fixedly connected to the bottom of the piston valve 3, and a piston valve spring 19 is sleeved on the surface of the piston valve spring seat 13.

[0029] An oil flow hard and soft regulating valve 8 is arranged on the right side of the shell 5, and the oil flow hard and soft regulating valve 8 includes a valve sleeve 14. The valve sleeve 14 is arranged on one side of the oil flow hard and soft regulating valve 8, and a valve core 17 is sleeved inside the valve sleeve 14. A sealing member is arranged between the valve sleeve 14 and the valve core 17. An oil through hole is arranged inside the valve core 17, and the sealing member is located at the oil through hole and the valve core 17. A positioning pin groove 15 is arranged on the outer surface of the valve sleeve 14, and a positioning circular pin 16 is arranged on the surface of the valve core 17.

[0030] Furthermore, a ball hole is provided on the surface of the positioning pin groove 15, and the number of the ball holes is several, and the ball holes are distributed in a circular shape with equal intervals. A positioning groove is provided on the surface of the valve core 17, and the positioning groove corresponds to the oil hole of the valve core 17. When the oil hole of the valve core 17 is connected with the oil hole of the valve sleeve 14, the ball enters the positioning groove, and a guide groove for guiding the ball is provided between each adjacent positioning groove, and the depth of the guide groove is less than the depth of the positioning groove, and the two ends of the guide groove are respectively connected to one of the positioning grooves.

[0031] Embodiment 2:

[0032] See also Figures 2 to 8 On the basis of the first embodiment, a first oil seal 11 is further fixedly connected to the top of the shell 5, the piston rod 1 is slidably connected to the first oil seal 11, a compensation chamber 12 is opened on the right side of the shell 5, and the valve core 17 is inserted into the compensation chamber 12. When relative movement occurs between the vehicle body and the axle, the piston rod 1 and the piston valve 3 inside the shock absorber will slide up and down.

[0033] Furthermore, a guide 2 is fixedly connected to the top of the inner cylinder 4, and the guide 2 is slidably connected to the surface of the piston rod 1. A hydraulic limit valve 9 is fixedly connected to the surface of the piston rod 1. The hydraulic limit valve 9 can prevent overload and mechanical damage and improve mechanical stability and reliability.

[0034] In actual operation, when this device is used, first, the device is installed in parallel with an elastic element (such as a spring, etc.). When relative movement occurs between the vehicle body and the axle, the piston rod 1 and the piston valve 3 inside the shock absorber will slide up and down, causing the oil in the oil overflow hole 10 to flow. At this time, the friction between the oil and the hole wall and the internal friction between the oil molecules form a damping force. When the damping size of the shock absorber needs to be adjusted, the oil flow soft and hard regulating valve 8 can be rotated. At this time, the oil flow soft and hard regulating valve 8 can control the amount of oil, so that the size of the damping force formed by the internal friction between the oil molecules is also inconsistent, so as to achieve the adjustment of the damping size of the shock absorber. It can adapt to different road conditions and can adjust the damping comfort and controllability according to the driving conditions of the owner, and reduce the impact from the road surface, thereby improving the driving smoothness of the car.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A shock absorber with adjustable damping, comprising a housing (5), characterized in that: The bottom of the housing (5) is fixedly connected to a working cylinder (7), the bottom of the working cylinder (7) is fixedly connected to an oil flow compression bottom valve (6), an inner cylinder (4) is arranged in the working cylinder (7), one side of the inner cylinder (4) is provided with an oil flow overflow hole (10), the inner wall of the inner cylinder (4) is slidably connected to a piston valve (3), the piston valve (3) is fixedly connected to a piston rod (1), the surface of the piston valve (3) is fixedly connected to a second oil seal (18), the bottom of the piston valve (3) is fixedly connected to a piston valve spring seat (13), and the surface of the piston valve spring seat (13) is sleeved with a piston valve spring (19); An oil flow soft and hard regulating valve (8) is arranged on the right side of the housing (5), and the oil flow soft and hard regulating valve (8) comprises a valve sleeve (14). The valve sleeve (14) is arranged on one side of the oil flow soft and hard regulating valve (8), a valve core (17) is sleeved inside the valve sleeve (14), a sealing member is arranged between the valve sleeve (14) and the valve core (17), an oil through hole is arranged inside the valve core (17), and the sealing member is located at the oil through hole and the valve core (17), a positioning pin groove (15) is arranged on the outer surface of the valve sleeve (14), and a positioning circular pin (16) is arranged on the surface of the valve core (17).

2. A shock absorber with adjustable damping according to claim 1, characterized in that: The surface of the positioning pin mounting groove (15) is provided with ball holes, the number of the ball holes is several, and the several ball holes are distributed in a ring shape with equal intervals.

3. The shock absorber with adjustable damping according to claim 1, characterized in that: A positioning groove is provided on the surface of the valve core (17), and the positioning groove corresponds to the oil hole of the valve core (17). When the oil hole of the valve core (17) is connected to the oil hole of the valve sleeve (14), the ball enters the positioning groove. A guide groove for guiding the ball is provided between each adjacent positioning groove. The depth of the guide groove is less than the depth of the positioning groove. Two ends of the guide groove are respectively connected to one positioning groove.

4. The shock absorber with adjustable damping according to claim 1, characterized in that: A first oil seal (11) is fixedly connected to the top of the housing (5), the piston rod (1) is slidably connected to the first oil seal (11), a compensation chamber (12) is provided on the right side of the housing (5), and the valve core (17) is inserted into the compensation chamber (12).

5. The damping adjustable shock absorber according to claim 1, characterized in that: A guide (2) is fixedly connected to the top of the inner cylinder (4), and the guide (2) is slidably connected to the surface of the piston rod (1), and a hydraulic limit valve (9) is fixedly connected to the surface of the piston rod (1).

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