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 mounting base, a first barrel, a second barrel, a partition plate, a spring, a first control valve, a second control valve and a buffer assembly. The spring is connected with the first barrel and the second barrel; the partition plate is arranged on the inner wall of the second barrel and is in sealing sliding fit with the second barrel; the partition plate divides the second barrel into a first cavity and a second cavity; the first cavity, the first control valve, the second control valve and the second cavity form an adjusting channel; the buffer assembly, the first control valve and the second control valve are communicated. The damping device has the effect of improving the convenience of damping adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorbers, in particular to an adjustable damping shock absorber. BACKGROUND

[0002] A shock absorber is a key component of a suspension system, which can effectively reduce vehicle body vibration and improve the comfort and safety of a vehicle. The working principle of a hydraulic shock absorber is mainly to utilize the viscosity and incompressibility of liquid to generate damping force through the flow of oil inside the shock absorber and the control of valves, thereby achieving the effect of shock absorption.

[0003] Currently, the main way to adjust the hardness of a shock absorber is to change the flow of hydraulic oil inside the shock absorber. Specifically, by adjusting the adjusting screw and other components on the shock absorber, the flow area of hydraulic oil passing through the valve is changed. When the adjusting screw is tightened, the flow area is reduced, the resistance to the flow of hydraulic oil is increased, the damping force is also increased, and the shock absorber becomes harder; on the contrary, when the adjusting screw is loosened, the flow area is increased, the resistance to the flow of hydraulic oil is reduced, the damping force is also reduced, and the shock absorber becomes softer.

[0004] However, the existing shock absorber has certain limitations in adjusting the opening and closing of the valve. Usually, the vehicle needs to be stopped first, and then a tool is used to adjust the size of the valve. This adjustment method is difficult to adjust the damping hardness in real time according to the road conditions during driving. CONTENT OF THE INVENTION

[0005] In order to improve the convenience of adjusting the shock absorption, the present application provides an adjustable damping shock absorber.

[0006] The adjustable damping shock absorber provided by the present application adopts the following technical scheme:

[0007] An adjustable damping shock absorber comprises a mounting seat, a first cylinder, a second cylinder, a partition plate, a spring, a first control valve, a second control valve and a buffer assembly, wherein:

[0008] The first cylinder is slidably sleeved outside the first cylinder;

[0009] The spring connects the first cylinder and the second cylinder;

[0010] The partition plate is arranged on the inner wall of the second cylinder and is in sealed sliding fit with the second cylinder;

[0011] The partition plate divides the second cylinder into a first cavity and a second cavity;

[0012] The first cavity, the first control valve, the second control valve and the second cavity form an adjusting channel;

[0013] The buffer assembly, the first control valve and the second control valve are in communication.

[0014] Optionally, the first control valve comprises a first guide pipe and a first guide rod, wherein:

[0015] The first guide pipe and the adjusting channel are in communication;

[0016] A plurality of openings are arranged on the first guide pipe;

[0017] The first guide rod is arranged inside the first guide pipe and moves along the first guide pipe axis by a driving unit;

[0018] An end of the first guide rod is provided with a limiting block which is insertedly matched with the first guide pipe;

[0019] The longitudinal section size of the limiting block gradually decreases along the direction from the first guide rod to the first guide rod.

[0020] Optionally, the first guide rod is threadedly connected with the first guide pipe;

[0021] An end of the first guide rod is provided with a polygonal driving groove;

[0022] The driving unit is a motor arranged on a mounting base;

[0023] A motor shaft of the motor is provided with a driving block corresponding to the shape of the driving groove;

[0024] The driving block is insertedly matched with the driving groove.

[0025] Optionally, the mounting base is provided with a protective cover;

[0026] The protective cover is sleeved with the outside of the motor;

[0027] A gap is left between the protective cover and the motor.

[0028] Optionally, the buffer assembly comprises a buffer cylinder and an elastic cover, wherein:

[0029] The buffer cylinder is arranged on the mounting base;

[0030] The elastic cover is arranged inside the buffer cylinder;

[0031] A buffer space is formed between the outer wall of the elastic cover and the inner wall of the buffer cylinder.

[0032] Optionally, a plurality of limiting grooves are arranged on the outer wall of the buffer cylinder;

[0033] A plurality of elastic limiting rings are arranged on the outer wall of the elastic cover;

[0034] The limiting ring and the limiting groove are sealingly connected.

[0035] Optionally, one end of the buffer cylinder is closed.

[0036] An adjusting space is formed between the inner wall of the elastic cover and the closed end of the buffer cylinder.

[0037] The adjusting space is internally provided with gas.

[0038] Optionally, a communication port in communication with the adjusting channel is arranged on the wall of the buffer space.

[0039] The buffer space is internally provided with an elastic flow limiting block.

[0040] The flow limiting block is arranged between the elastic cover and the communication port.

[0041] Optionally, a groove is arranged on the side of the flow limiting block close to the elastic cover.

[0042] Optionally, the buffer cylinder is threadedly connected with the mounting seat.

[0043] The end of the buffer cylinder presses the flow limiting block on the mounting seat.

[0044] In summary, the present application has at least one of the following beneficial technical effects:

[0045] 1. By arranging the controller on the handle of the vehicle, the driver can conveniently and quickly regulate the flow rate of the first control valve and the second control valve during driving, thereby realizing rapid adjustment of the damper damping, greatly improving the driving experience and the adaptability of the vehicle to different road conditions.

[0046] 2. The arrangement of the buffer assembly enables timely temporary storage of excess hydraulic oil or supplement of insufficient hydraulic oil when the hydraulic oil flow is unbalanced, maintains the dynamic balance of the hydraulic oil flow in the adjusting channel, ensures the stability and reliability of the damper, and avoids adverse effects of hydraulic oil flow mutation on the performance of the damper.

[0047] 3. The design of the protective cover not only reduces the possibility of damage to the motor when it is hit, but also prevents hydraulic oil from leaking onto the motor and contacting the circuit, thereby improving the safety of the entire damper. At the same time, the sealing connection between the elastic cover and the buffer cylinder in the buffer assembly through the limiting ring and the limiting groove, and the thread connection between the buffer cylinder and the mounting seat, etc., all enhance the reliability of the connection of the components of the damper, thereby prolonging the service life of the damper. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0049] Figure 2 is a schematic diagram embodying the partition plate structure in the embodiments of the present application.

[0050] Figure 3 is a schematic diagram embodying the mounting seat structure in the embodiments of the present application.

[0051] Figure 4 is a schematic diagram embodying the buffer space structure in the embodiments of the present application.

[0052] Figure 5 is a schematic diagram embodying the positional relationship between the first guide pipe and the first guide rod in the embodiments of the present application.

[0053] Figure 6 is a schematic diagram embodying the buffer assembly structure in the embodiments of the present application.

[0054] Figure 7 is a schematic diagram embodying the buffer cover structure in the embodiments of the present application.

[0055] Figure 8 is a schematic diagram embodying the flow-limiting block structure in the embodiments of the present application.

[0056] Legend of reference signs:

[0057] 1, mounting seat; 2, first cylinder; 3, second cylinder; 31, flow guide cylinder; 4, partition plate; 5, spring; 6, first control valve; 61, first guide pipe; 611, opening; 62, first guide rod; 621, driving groove; 63, limiting block; 64, motor; 641, driving block; 65, protective cover; 7, second control valve; 8, buffer assembly; 81, buffer cylinder; 811, limiting groove; 82, elastic cover; 821, limiting ring; 83, flow-limiting block; 831, groove; 832, extrusion ring; 84, buffer space; 9, adjustment channel. DETAILED DESCRIPTION

[0058] The following will be described in detail in combination with the accompanying Figures 1-8 The present application will be further described in detail.

[0059] The embodiments of the present application disclose an adjustable damping shock absorber.

[0060] An adjustable damping shock absorber comprises a mounting seat 1, a first cylinder 2, a second cylinder 3, a partition plate 4, a spring 5, a first control valve 6, a second control valve 7 and a buffer assembly 8. The first cylinder 2 is slidingly sleeved outside the second cylinder 3. The spring 5 connects the first cylinder 2 and the second cylinder 3. The partition plate 4 is arranged on the inner wall of the second cylinder 3 and sealingly slidingly cooperates with the second cylinder 3. The partition plate 4 divides the second cylinder 3 into a first cavity and a second cavity. The first cavity, the first control valve 6, the second control valve 7 and the second cavity form an adjustment channel 9. The buffer assembly 8, the first control valve 6 and the second control valve 7 are communicated.

[0061] The second cylinder 3 is filled with hydraulic oil. The hydraulic oil flows in the adjusting channel 9. When the first cylinder 2 and the second cylinder 3 are pressed to approach each other, the hydraulic oil in the second cavity is pressed to flow into the second control valve 7. The flow rate of the hydraulic oil flowing through the second control valve 7 is controlled by adjusting the second control valve 7, so as to control the approaching speed of the first cylinder 2 and the second cylinder 3. The hydraulic oil flowing out of the second control valve 7 flows into the first control valve 6. The flow into the first cavity is adjusted by adjusting the first control valve 6. When the flow rate of the second control valve 7 is greater than that of the first control valve 6, the hydraulic oil is temporarily stored in the buffer assembly 8. When the flow rate of the second control valve 7 is less than that of the first control valve 6, the hydraulic oil temporarily stored in the buffer assembly 8 flows into the first control valve 6 for supplement. When the first cylinder 2 and the second cylinder 3 are away from each other, the flow direction of the hydraulic oil in the adjusting channel 9 is reversed.

[0062] The first control valve 6 and the second control valve 7 are connected with a controller. The controller is arranged at a position convenient for the driver to operate. In the embodiment of the application, the controller is arranged on the handle of the vehicle, so that the driver can control the flow rates of the first control valve 6 and the second control valve 7 through the controller during driving, so as to improve the convenience of adjusting the damping of the shock absorber.

[0063] The first control valve 6 door includes a first guide pipe 61 and a first guide rod 62. The first guide pipe 61 is connected with the adjusting channel 9. The first guide pipe 61 is provided with a plurality of openings 611, which are connected with the adjusting channel 9. The first guide rod 62 is arranged in the first guide pipe 61 and moves along the axis of the first guide pipe 61 by a driving unit. The end of the first guide rod 62 is provided with a limiting block 63. The limiting block 63 is inserted into the first guide pipe 61. The longitudinal section size of the limiting block 63 gradually decreases from the position close to the first guide rod 62 to the position away from the first guide rod 62.

[0064] When the flow rate of the first control valve 6 needs to be adjusted, the driving unit is controlled to work by the controller. The first guide rod 62 moves in the first guide pipe 61, so as to adjust the relative position of the limiting block 63 and the first guide pipe 61. The limiting block 63 is tapered. When the limiting block 63 moves in the first guide pipe 61, the flow rate of the hydraulic oil is controlled by adjusting the distance between the outer wall of the limiting block 63 and the inner wall of the first guide pipe 61.

[0065] The first guide rod 62 is screwed with the first guide pipe 61. The end of the first guide rod 62 is provided with a polygonal driving groove 621. The driving unit is an electric motor 64 arranged on the mounting base 1. The shaft of the electric motor 64 is provided with a driving block 641 corresponding to the shape of the driving groove 621. The driving block 641 is inserted into the driving groove 621.

[0066] The motor 64 and the controller are connected by a cable. The operator controls the motor 64 to rotate through the controller, so as to adjust the relative position of the limiting block 63 and the first guide pipe 61, thereby improving the convenience of adjusting the flow rate. At the same time, the threaded connection of the first guide rod 62 and the second guide pipe also reduces the possibility of hydraulic oil leakage.

[0067] The mounting seat 1 is provided with a protective cover 65. The protective cover 65 is sleeved with the outside of the motor 64. A gap is left between the protective cover 65 and the motor 64. When the protective cover 65 is impacted, the gap facilitates the deformation of the protective cover 65, thereby reducing the possibility of damage to the motor 64. At the same time, if the hydraulic oil leaks into the protective cover 65, it is also convenient for the hydraulic oil to be temporarily stored, thereby reducing the possibility of the hydraulic oil flowing directly onto the motor 64, and also reducing the possibility of the hydraulic oil contacting the circuit, further improving the safety. The structure of the second control valve 7 is consistent with that of the first control valve 6.

[0068] The second cylinder body 3 is internally provided with a flow guide cylinder 31. The flow guide cylinder 31 and the second cylinder body 3 are provided with a flow guide channel. The first control valve 6 is connected with the first cavity through the flow guide channel.

[0069] The buffer assembly 8 includes a buffer cylinder 81 and an elastic cover 82. The buffer cylinder 81 is arranged on the mounting seat 1. The elastic cover 82 is arranged inside the buffer cylinder 81. The elastic cover 82 and the buffer cylinder 81 form a buffer space 84.

[0070] The hydraulic oil between the first control valve 6 and the second control valve 7 flows into the buffer space 84. When the amount of hydraulic oil is excessive, the buffer space 84 temporarily stores the excessive hydraulic oil. When the amount of hydraulic oil is insufficient, the temporarily stored hydraulic oil in the buffer assembly 8 space is supplemented, thereby facilitating the dynamic balance of the amount of hydraulic oil in the adjusting channel 9.

[0071] The outer wall of the buffer cylinder 81 is provided with a plurality of limiting grooves 811. The outer wall of the elastic cover 82 is provided with a plurality of elastic limiting rings 821. The limiting ring 821 and the limiting groove 811 are sealingly connected. When the elastic cover 82 is installed on the inner wall of the buffer cylinder 81, the elastic cover 82 and the limiting ring 821 are connected in the buffer cylinder 81 through the elastic force of the elastic cover 82 and the elastic force of the limiting ring 821, thereby improving the convenience of installation and the sealing performance of the elastic cover 82.

[0072] One end of the buffer cylinder 81 is closed. The inner wall of the elastic cover 82 and the closed end of the buffer cylinder 81 form an adjusting space. The adjusting space is internally provided with gas. The adjusting space is inflated to control the degree of deformation of the elastic cover 82, thereby adjusting the content of the temporarily stored hydraulic oil. At the same time, the gas pressure of the elastic cover 82 further presses the limiting ring 821 in the limiting groove 811, thereby improving the stability of the elastic cover 82.

[0073] The elastic cover 82 is circumferentially provided with a plurality of reinforcing ribs along the axial direction, so as to facilitate the deformation of the elastic cover 82 along the axial direction.

[0074] The wall of the buffer space 84 is provided with a communication port in communication with the adjusting channel 9. The buffer space 84 is internally provided with an elastic flow limiting block 83. The flow limiting block 83 is arranged between the elastic cover 82 and the communication port.

[0075] In the embodiment of the present application, the flow limiting block 83 is a sponge. When the hydraulic oil enters the buffer space 84, the sponge disperses the hydraulic oil, reducing the possibility of the hydraulic oil directly impacting the elastic cover 82, reducing the possibility of the hydraulic oil impacting the elastic cover 82, causing the limiting ring 821 to disengage from the limiting groove 811.

[0076] The side of the flow limiting block 83 close to the elastic cover 82 is provided with a groove 831. The groove 831 corresponds to the elastic cover 82. Since the flow limiting block 83 limits the flow rate of the hydraulic oil, the hydraulic oil is facilitated to extrude the elastic cover 82 along the axial direction of the limiting ring 821 after entering the buffer space 84, guiding the deformation direction of the elastic cover 82, reducing the possibility of the elastic cover 82 deforming due to the extrusion of the hydraulic oil, causing the limiting ring 821 to disengage from the limiting groove 811.

[0077] The buffer cylinder 81 is threadedly connected with the mounting seat 1. The end of the buffer cylinder 81 presses the flow limiting block 83 against the mounting seat 1. The outer wall of the flow limiting block 83 is circumferentially provided with an extrusion ring 832. The buffer cylinder 81 presses the limiting block 63 against the mounting seat 1 through the extrusion ring 832.

[0078] The implementation principle of the adjustable damping shock absorber in the embodiment of the present application is as follows: when the first cylinder 2 and the second cylinder 3 are pressed to approach each other, the hydraulic oil in the second cavity is pressed to flow into the second control valve 7, the flow rate of the hydraulic oil flowing through the second control valve 7 is controlled by adjusting the second control valve 7, thereby controlling the speed of the first cylinder 2 and the second cylinder 3 approaching each other. After the hydraulic oil flows out of the second control valve 7, it flows into the first control valve 6, and then flows into the first cavity by adjusting the first control valve 6. When the flow rate of the second control valve 7 is greater than that of the first control valve 6, the excess hydraulic oil flows into the buffer assembly 8 for temporary storage; when the flow rate of the second control valve 7 is less than that of the first control valve 6, the hydraulic oil temporarily stored in the buffer assembly 8 flows into the first control valve 6 for replenishment. When the first cylinder 2 and the second cylinder 3 are away from each other, the flow direction of the hydraulic oil in the adjusting channel 9 is opposite. During the whole process, the first control valve 6 and the second control valve 7 are in communication with the controller, and the driver can conveniently adjust the flow rates of the two control valves through the controller, thereby adjusting the damping of the shock absorber and realizing dynamic adjustment of the damping effect.

[0079] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An adjustable damping shock absorber characterized by: The adjustable damping shock absorber comprises a mounting base, a first cylinder, a second cylinder, a partition plate, a spring, a first control valve, a second control valve and a buffer assembly, wherein: The first cylinder is slidably sleeved outside the first cylinder; The spring connects the first cylinder and the second cylinder; The partition plate is arranged on the inner wall of the second cylinder and is in sealing sliding fit with the second cylinder; The partition plate divides the second cylinder into a first cavity and a second cavity; The first cavity, the first control valve, the second control valve and the second cavity form an adjusting channel; The buffer assembly, the first control valve and the second control valve are in communication.

2. The adjustable damping shock absorber according to claim 1, wherein: The first control valve comprises a first guide pipe and a first guide rod, wherein: The first guide pipe is in communication with the adjusting channel; A plurality of openings are arranged on the first guide pipe; The first guide rod is arranged inside the first guide pipe and is moved along the axis of the first guide pipe by a driving unit; The end of the first guide rod is provided with a limiting block which is in plug-in fit with the first guide pipe; The longitudinal cross-sectional dimension of the limiting block gradually decreases from the side close to the first guide rod to the side far from the first guide rod.

3. The adjustable damping shock absorber according to claim 2, wherein: The first guide rod is in threaded connection with the first guide pipe; The end of the first guide rod is provided with a polygonal driving groove; The driving unit is a motor arranged on the mounting base; The motor shaft of the motor is provided with a driving block corresponding to the shape of the driving groove; The driving block is in plug-in fit with the driving groove.

4. A damper according to claim 3, wherein: A protective cover is arranged on the mounting base; The protective cover is sleeved outside the motor; A gap is left between the protective cover and the motor.

5. A damper according to claim 1, wherein: The buffer assembly comprises a buffer cylinder and an elastic cover, wherein: The buffer cylinder is arranged on the mounting base; The elastic cover is arranged inside the buffer cylinder; The buffer space is formed between the outer wall of the elastic cover and the inner wall of the buffer cylinder.

6. The adjustable damping shock absorber according to claim 5, wherein: A plurality of limiting grooves are arranged on the outer wall of the buffer cylinder; A plurality of elastic limiting rings are arranged on the outer wall of the elastic cover; The limiting rings and the limiting grooves are in sealing clamping.

7. The adjustable damping shock absorber according to claim 6, wherein: One end of the buffer cylinder is closed; The adjusting space is formed between the inner wall of the elastic cover and the closed end of the buffer cylinder; The adjusting space is filled with gas.

8. The adjustable damping shock absorber according to claim 5, wherein: A communication port in communication with the adjusting channel is arranged on the wall of the buffer space; An elastic flow limiting block is arranged inside the buffer space; The flow limiting block is arranged between the elastic cover and the communication port.

9. A damper according to claim 8, wherein: A groove is arranged on the side of the flow limiting block close to the elastic cover.

10. A damper according to claim 8, wherein: The buffer cylinder is in threaded connection with the mounting base; The end of the buffer cylinder presses the flow limiting block against the mounting base.

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