Shock absorber and control method thereof

Abstract

The application discloses a shock absorber and a control method thereof. The first cylinder assembly of the shock absorber comprises an oil storage cylinder and an intermediate cylinder arranged inside the oil storage cylinder. The oil storage cylinder and the intermediate cylinder are assembled on the first connecting part of a connecting seat. An end of the intermediate cylinder away from the first connecting part is provided with a flow-through hole. An oil passage is formed between the intermediate cylinder and the oil storage cylinder. The connecting seat is provided with a first electromagnetic valve, a second electromagnetic valve, a first channel and a second channel. The first electromagnetic valve is assembled on the first channel. The second electromagnetic valve is assembled on the second channel. The second cylinder is assembled on the second connecting part of the connecting seat. The second cylinder is provided with a floating piston. The floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber. The gas storage chamber is arranged on the side of the liquid storage chamber away from the second connecting part. The liquid storage chamber is communicated with the intermediate cylinder through the first channel. The liquid storage chamber is communicated with the oil passage through the second channel. The technical scheme provided by the application can improve the damping adjustment range of the shock absorber.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorber, in particular to a shock absorber and a control method thereof. BACKGROUND

[0002] With the popularity of automobiles in China, people's requirements for the performance of automobiles, such as power, economy, braking, operation stability and comfort, are also getting higher and higher. As one of the indispensable modules in automobiles, the shock absorber has a great influence on the performance of the operation stability and comfort of the automobile.

[0003] The shock absorber can adjust the damping coefficient in real time according to the driving conditions and road conditions of the vehicle. However, the damping adjustment range of the existing shock absorber is small, which cannot meet the current demand of the vehicle for handling, comfort and safety. SUMMARY

[0004] The embodiments of the present application provide a shock absorber and a control method thereof to improve the damping adjustment range of the shock absorber.

[0005] In a first aspect, the embodiments of the present application provide a shock absorber, comprising: a first cylinder assembly, a connecting seat and a second cylinder which are connected in sequence.

[0006] The first cylinder assembly comprises an oil storage cylinder and an intermediate cylinder arranged inside the oil storage cylinder; the oil storage cylinder and the intermediate cylinder are assembled to a first connecting part of the connecting seat; an end of the intermediate cylinder away from the first connecting part is provided with a flow-through hole; an oil passage is formed between the intermediate cylinder and the oil storage cylinder;

[0007] The connecting seat is provided with a first electromagnetic valve, a second electromagnetic valve, a first channel and a second channel; the first electromagnetic valve is assembled to the first channel; the second electromagnetic valve is assembled to the second channel;

[0008] The second cylinder is assembled to a second connecting part of the connecting seat; a floating piston is arranged in the second cylinder; the floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber; the gas storage chamber is arranged on a side of the liquid storage chamber away from the second connecting part; the liquid storage chamber communicates with the intermediate cylinder through the first channel; the liquid storage chamber communicates with the oil passage through the second channel.

[0009] In a second aspect, the embodiments of the present application provide a shock absorber control method, which is suitable for the shock absorber provided by any of the embodiments of the present application, and the shock absorber comprises a control panel and a control module; the control panel comprises at least a gear adjustment control.

[0010] The shock absorber comprises a control panel and a control module; the control panel comprises at least a rebound adjustment control and a compression adjustment control;

[0011] The shock absorber control method comprises:

[0012] According to the road condition state, a compression adjustment instruction is input to the compression adjustment control to adjust the working current of the first electromagnetic valve, and a rebound adjustment instruction is input to the rebound adjustment control to adjust the working current of the second electromagnetic valve; the road condition state at least includes a highway mode, a high-speed mode and a mountain road mode.

[0013] In the present application, the shock absorber comprises a first cylinder assembly, a connecting seat and a second cylinder which are sequentially arranged, the first cylinder assembly comprises a center cylinder and an oil storage cylinder which are coaxially arranged, an oil passage is formed between the center cylinder and the oil storage cylinder, the connecting seat is connected to the first cylinder assembly through a first connecting part, the connecting seat is connected to the second cylinder through a second connecting part, the connecting seat is provided with a first channel and a second channel, the first channel is assembled with a first electromagnetic valve, and the second channel is assembled with a second electromagnetic valve. A floating piston is arranged in the second cylinder, the floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber, the liquid storage chamber communicates with the intermediate cylinder through the first channel, and the liquid storage chamber communicates with the oil passage through the second channel. The first electromagnetic valve is used for controlling the first loop in which the first channel is located, and the second electromagnetic valve is used for controlling the second loop in which the second channel is located, so that the oil in the shock absorber is controlled in two directions through the two loops, the response speed of the shock absorber is improved, the flow of the oil can be adjusted in multiple stages or steplessly through the first electromagnetic valve and the second electromagnetic valve, the damping adjustment range of the shock absorber is increased, the damping force of the vehicle can be adjusted in time according to the road condition state or the driving state, and the comfort and safety of the vehicle are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structural explosion diagram of a shock absorber is provided for the embodiment of the present application.

[0015] Figure 2 A compression principle diagram of a shock absorber is provided for the embodiment of the present application.

[0016] Figure 3 A rebound principle diagram of another shock absorber is provided for the embodiment of the present application.

[0017] Figure 4 A structural diagram of a connecting seat of a shock absorber is provided for the embodiment of the present application.

[0018] Figure 5 A sectional structural diagram of another shock absorber is provided for the embodiment of the present application.

[0019] Figure 6 A structural diagram of a control panel of a shock absorber is provided for the embodiment of the present application.

[0020] Figure 7A structure schematic diagram of a shock absorber control method provided by the embodiment of the present application. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended for the purpose of interpretation of the present application and are not intended to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings for the purpose of description.

[0022] Figure 1 An exploded view of a shock absorber provided by the embodiment of the present application, Figure 2 A compression principle diagram of a shock absorber provided by the embodiment of the present application, Figure 3 A rebound principle diagram of another shock absorber provided by the embodiment of the present application, Figure 4 A structure schematic diagram of a connecting seat of a shock absorber provided by the embodiment of the present application. The embodiment of the present application provides a shock absorber, as shown in the figure, comprising a first cylinder assembly, a connecting seat 5 and a second cylinder 1 which are sequentially connected. Figures 1 to 4

[0023] The first cylinder assembly comprises an oil storage cylinder 6 and an intermediate cylinder 7 arranged inside the oil storage cylinder 6; the oil storage cylinder 6 and the intermediate cylinder 7 are both assembled to a first connecting part 51 of the connecting seat 5; an end of the intermediate cylinder 7 away from the first connecting part 51 is provided with a flow-through hole 71; an oil passage 61 is formed between the intermediate cylinder 7 and the oil storage cylinder 6;

[0024] The connecting seat 5 is provided with a first electromagnetic valve 41, a second electromagnetic valve 42, a first channel 53 and a second channel 54; the first electromagnetic valve 41 is assembled to the first channel 53; the second electromagnetic valve 42 is assembled to the second channel 54;

[0025] The second cylinder 1 is assembled to a second connecting part 52 of the connecting seat 5; the second cylinder 1 is provided with a floating piston 3; the floating piston 3 divides the second cylinder 1 into a liquid storage chamber 31 and a gas storage chamber 32; the gas storage chamber 32 is arranged on a side of the liquid storage chamber 31 away from the second connecting part 52; the liquid storage chamber 31 is communicated with the intermediate cylinder 7 through the first channel 53; the liquid storage chamber 31 is communicated with the oil passage 61 through the second channel 54.

[0026] As shown in the figure, the connecting seat 5 is provided with a first connecting part 51 and a second connecting part 52 which are sequentially arranged; the first connecting part 51 is provided with a first connecting hole 511 and a second connecting hole 512 which are sequentially arranged; the second connecting part 52 is provided with a third connecting hole 521 and a fourth connecting hole 522 which are sequentially arranged. Figure 1 ​As shown, the first cylinder assembly, the connecting seat 5 and the second cylinder 1 are sequentially arranged, the first cylinder assembly serves as a working cylinder and comprises an oil storage cylinder 6 and an intermediate cylinder 7, the intermediate cylinder 7 is arranged inside the oil storage cylinder 6, and the oil storage cylinder 6 and the intermediate cylinder 7 can be coaxially arranged, so that an oil passage 61 is formed between the intermediate cylinder 7 and the oil storage cylinder 6. The connecting seat 5 is used for connecting the first cylinder assembly and the second cylinder 1 respectively. Specifically, the connecting seat 5 comprises a first connecting part 51 and a second connecting part 52, the connecting seat 5 is connected to the first cylinder assembly through the first connecting part 51, and the connecting seat 5 is connected to the second cylinder 1 through the second connecting part 52. Optionally, the second connecting part 52 can be connected to the second cylinder 1 through a threaded locking ring 2 to fix the second cylinder 1 and prevent the second cylinder 1 from loosening.

[0027] The first connecting seat 5 is provided with a first channel 53 and a second channel 54, the first electromagnetic valve 41 is assembled in the first channel 53, and the second electromagnetic valve 42 is assembled in the second channel 54. The second cylinder 1 is provided with a floating piston 3, the floating piston 3 divides the second cylinder 1 into a liquid storage chamber 31 and a gas storage chamber 32, the liquid storage chamber 31 is filled with oil, and the gas storage chamber 32 can be filled with nitrogen. The liquid storage chamber 31 is in communication with the intermediate cylinder 7 through the first channel 53, and the liquid storage chamber 31 is in communication with the oil passage 61 through the second channel 54. Therefore, the oil can flow from the intermediate cylinder 7 through the first channel 53 to the liquid storage chamber 31 to form a first circuit. The oil can also flow from the oil passage 61 through the second channel 54 to the liquid storage chamber 31 to form a second circuit. The first electromagnetic valve 41 and the second electromagnetic valve 42 can respectively adjust the flow of the respective circuits, and by controlling the flow of the first circuit and the second circuit, the outflow and return flow rate of the oil can be controlled, so as to increase the damping adjustment of the shock absorber. Under the same flow rate, the greater the internal flow of the first electromagnetic valve 41 and the second electromagnetic valve 42, the softer the shock absorber, and the automobile is more inclined to be comfortable. Conversely, the shock absorber becomes harder, and the automobile is more inclined to be super-controlled. Therefore, the double-circuit electric control shock absorber needs to be adapted to the control circuit of the automobile, and by controlling the first electromagnetic valve 41 and the second electromagnetic valve 42, the shock absorber is adaptively adjusted, so that the shock absorber realizes stepless adjustment of the double circuit, improves the response speed of the shock absorber and increases the controllable range.

[0028] In the embodiment of the present application, the shock absorber comprises a first cylinder assembly, a connecting seat and a second cylinder which are sequentially arranged, the first cylinder assembly comprises a center cylinder and an oil storage cylinder which are coaxially arranged, an oil passage is formed between the center cylinder and the oil storage cylinder, the connecting seat is connected with the first cylinder assembly through a first connecting part, the connecting seat is connected with the second cylinder through a second connecting part, the connecting seat is provided with a first channel and a second channel, the first channel is assembled with a first electromagnetic valve, and the second channel is assembled with a second electromagnetic valve. The second cylinder is provided with a floating piston, the floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber, the liquid storage chamber is communicated with the intermediate cylinder through the first channel, and the liquid storage chamber is communicated with the oil passage through the second channel. In the embodiment, the first electromagnetic valve controls a first loop in which the first channel is located, and the second electromagnetic valve controls a second loop in which the second channel is located, so that the oil in the shock absorber is controlled in two directions through the two loops, the response speed of the shock absorber is improved, the flow of the oil can be adjusted in multiple stages or steplessly through the first electromagnetic valve and the second electromagnetic valve, the damping adjustment range of the shock absorber is increased, the damping force of the vehicle can be adjusted in time according to the road conditions or the driving state, and the comfort and safety of the vehicle are improved.

[0029] The above is the core idea of the present application, and the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] Optionally, the first electromagnetic valve 41 can be a compression adjustment valve for controlling the flow of the oil from the intermediate cylinder 7 into the liquid storage chamber 31, and the second electromagnetic valve 42 can be a rebound adjustment valve for controlling the flow of the oil from the oil passage 61 into the liquid storage chamber 31.

[0031] Continuing to refer to Figure 4 Optionally, the connecting seat 5 can comprise a first accommodating cavity 55 and a second accommodating cavity 56, the first accommodating cavity 55 is used for assembling the first electromagnetic valve 41, the first electromagnetic valve 41 is detachably connected to the connecting seat 5, the second accommodating cavity 56 is used for assembling the second electromagnetic valve 42, and the second electromagnetic valve 42 is detachably connected to the connecting seat 5. The first accommodating cavity 55 can accommodate the first electromagnetic valve 41, the second accommodating cavity 56 can accommodate the second electromagnetic valve 42, and the first electromagnetic valve 41 and the second electromagnetic valve 42 are both detachably connected to the connecting seat 5, so that the first electromagnetic valve 41 and the second electromagnetic valve 42 which have failed can be replaced in the future, the universality of the first electromagnetic valve 41 and the second electromagnetic valve 42 is improved, and the service life of the shock absorber is prolonged.

[0032] To facilitate accurate installation of the first solenoid valve 41 and the second solenoid valve 42, optionally, a first mark can be provided on the surface of the first solenoid valve 41; and a second mark can be provided on the surface of the second solenoid valve 42. The installer can then install the first solenoid valve 41 into the first receiving cavity 55 according to the first mark, and the second solenoid valve 42 into the second receiving cavity 56 according to the second mark. Furthermore, to distinguish between the first solenoid valve 41 and the second solenoid valve 42, optionally, the surface of the first solenoid valve 41 can be a first color; and the surface of the second solenoid valve 42 can be a second color; the first color and the second color are different colors. For example, the first color can be blue, and the second color can be red. This embodiment does not limit the specific colors used; any colors with a significant difference can be chosen for easy identification by the operator.

[0033] Figure 5 This is a cross-sectional structural diagram of another vibration damper provided in an embodiment of the present invention. Optionally, the vibration damper may further include: a piston assembly and a spring 64; the piston assembly includes a piston valve system 62 and a piston rod 63; the piston rod 63 is fixedly connected to the piston valve system 62; the piston valve system 62 is slidably connected to the inner wall of the intermediate cylinder 7; the piston rod 63 is used to drive the piston valve system 62 to slide along the inner wall of the intermediate cylinder 7; the piston rod 63 is provided with a first limiting structure 65; the first cylinder assembly is provided with a second limiting structure 66; the spring 64 is disposed between the first limiting structure 65 and the second limiting structure 66. When the piston rod 63 moves along the extension direction of the intermediate cylinder 7 towards the second limiting structure 66, oil flows from the oil passage 61 through the flow hole 71 to the intermediate cylinder 7. The oil flows along the first circuit, and the spring 64 is compressed, realizing the compression process of the shock absorber. When the piston rod 63 moves along the extension direction of the intermediate cylinder 7 towards the first limiting structure 65, oil flows from the intermediate cylinder 7 through the flow hole 71 to the oil passage 61. The oil flows along the second circuit, and the spring 64 is stretched, realizing the rebound process of the shock absorber. The vehicle shock absorber uses a second solenoid valve 42 to control the recovery damping force and a first solenoid valve 41 to control the compression damping force, expanding the variable range of the compression damping force and providing satisfactory handling, comfort, and safety for the vehicle under different road conditions.

[0034] Optionally, the shock absorber may also include: a control module ( Figure 1 (not shown in the image). The control module is electrically connected to the first solenoid valve 41 and the second solenoid valve 42 respectively, and is used to control the opening and closing of the first solenoid valve 41 and the second solenoid valve 42.

[0035] Figure 6A structure diagram of a control panel of a shock absorber is provided in the embodiment of the present application. Optionally, the shock absorber can further comprise: a control panel 21; the control panel 21 comprises a rebound adjustment control 22, a rebound reset control 23, a compression adjustment control 24 and a compression reset control 25; a control module is electrically connected with an external power supply, for converting an external current of the external power supply into a working current and inputting the working current to the first electromagnetic valve 41 and the second electromagnetic valve 42; the rebound adjustment control 22 is used for receiving a rebound adjustment instruction and sending the rebound adjustment instruction to the control module, so that the control module controls the working current of the second electromagnetic valve 42; the compression adjustment control is used for receiving a compression adjustment instruction and sending the compression adjustment instruction to the control module, so that the control module controls the working current of the first electromagnetic valve 41; the rebound reset control 23 is used for receiving a rebound reset instruction and sending the rebound reset instruction to the control module, so that the control module controls the second electromagnetic valve 42 to restore the factory working current; and the compression reset control 25 is used for receiving a compression reset instruction and sending the compression reset instruction to the control module, so that the control module controls the first electromagnetic valve 41 to restore the factory working current.

[0036] The embodiment of the present application further provides a shock absorber control method, which is suitable for the shock absorber provided by any embodiment of the present application, and the shock absorber comprises a control panel and a control module; the control panel at least comprises a rebound adjustment control and a compression adjustment control. Figure 7 A structure diagram of a shock absorber control method is provided in the embodiment of the present application, as shown in Figure 7 The shock absorber control method provided by the embodiment of the present application comprises the following steps:

[0037] In step S101, according to a road condition state, a compression adjustment instruction is input to the compression adjustment control to adjust the working current of the first electromagnetic valve, and a rebound adjustment instruction is input to the rebound adjustment control to adjust the working current of the second electromagnetic valve; the road condition state at least comprises a highway mode, a high-speed mode and a mountain road mode.

[0038] It should be noted that the working current of the first electromagnetic valve and the working current of the second electromagnetic valve can be adjusted at the same amplitude, or can be adjusted respectively, and the embodiment does not specially limit this. The driver can adjust the working current according to the road condition state, so as to adjust the conduction opening of the first electromagnetic valve and the second electromagnetic valve, to realize different damping forces of the shock absorber. Specifically, in the highway mode, low damping force is realized to meet the comfort requirement, and in the high-speed mode and the mountain road mode, high damping force is realized to meet the safety requirement.

[0039] In the embodiment of the present application, the shock absorber comprises a first cylinder assembly, a connecting seat and a second cylinder which are sequentially arranged, the first cylinder assembly comprises a center cylinder and an oil storage cylinder which are coaxially arranged, an oil passage is formed between the center cylinder and the oil storage cylinder, the connecting seat is connected with the first cylinder assembly through a first connecting part, the connecting seat is connected with the second cylinder through a second connecting part, the connecting seat is provided with a first channel and a second channel, the first channel is provided with a first electromagnetic valve, and the second channel is provided with a second electromagnetic valve. The second cylinder is provided with a floating piston, the floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber, the liquid storage chamber is communicated with the intermediate cylinder through the first channel, and the liquid storage chamber is communicated with the oil passage through the second channel. In the embodiment, the second circuit in which the first channel is located is controlled through the first electromagnetic valve, and the first circuit in which the second channel is located is controlled through the second electromagnetic valve, so that the oil in the shock absorber is controlled in two directions, the response speed of the shock absorber is improved, the flow of the oil can be adjusted in multiple stages or steplessly through the first electromagnetic valve and the second electromagnetic valve, the damping adjustment range of the shock absorber is increased, the damping force of the vehicle can be adjusted in time according to the road conditions or the driving state, and the comfort and safety of the vehicle are improved.

[0040] On the basis of the above embodiment, the conduction opening degrees of the first electromagnetic valve and the second electromagnetic valve can be adjusted by the same amplitude at the same time, the larger the working current of the electromagnetic valve is, the larger the opening degree of the electromagnetic valve is, and the higher the damping force of the vehicle is. Optionally, the shock absorber control method can specifically include the following steps: if the road condition state is a highway mode, adjusting the working current of the first electromagnetic valve and the second electromagnetic valve to be a first current; if the road condition state is a high-speed mode, adjusting the working current of the first electromagnetic valve and the second electromagnetic valve to be a second current; if the road condition state is a mountain road mode, adjusting the working current of the first electromagnetic valve and the second electromagnetic valve to be a third current; the second current is greater than the first current; and the third current is greater than the second current. In the embodiment, the greater the current value is, the greater the damping force is, the higher the damping force is adjusted in the bumpy road condition, and the lower the damping force is adjusted in the relatively flat road condition, so that the comfort and safety of the vehicle are effectively balanced.

[0041] Note that the above are only the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A damper characterized by, Comprise: The first cylinder assembly, the connecting seat and the second cylinder are sequentially connected; The first cylinder assembly comprises an oil storage cylinder and an intermediate cylinder arranged inside the oil storage cylinder; the oil storage cylinder and the intermediate cylinder are assembled to the first connecting part of the connecting seat; an end of the intermediate cylinder away from the first connecting part is provided with a flow-through hole; an oil passage is formed between the intermediate cylinder and the oil storage cylinder; The connecting seat is provided with a first electromagnetic valve, a second electromagnetic valve, a first channel and a second channel; the first electromagnetic valve is assembled to the first channel; the second electromagnetic valve is assembled to the second channel; The second cylinder is assembled to the second connecting part of the connecting seat; the second cylinder is provided with a floating piston; the floating piston divides the second cylinder into a liquid storage chamber and a gas storage chamber; the gas storage chamber is arranged on the side of the liquid storage chamber away from the second connecting part; the liquid storage chamber communicates with the intermediate cylinder through the first channel; the liquid storage chamber communicates with the oil passage through the second channel; the first cylinder assembly and the liquid storage chamber of the second cylinder are full of oil; The shock absorber further comprises a control panel; the control panel comprises a rebound adjustment control, a rebound reset control, a compression adjustment control and a compression reset control; a control module is electrically connected with an external power supply, for converting external current of the external power supply into working current and inputting the working current into the first electromagnetic valve and the second electromagnetic valve; The rebound adjustment control is used for receiving rebound adjustment instructions and sending the rebound adjustment instructions to the control module, so that the control module controls working current of the second electromagnetic valve; the compression adjustment control is used for receiving compression adjustment instructions and sending the compression adjustment instructions to the control module, so that the control module controls working current of the first electromagnetic valve; The rebound reset control is used for receiving rebound reset instructions and sending the rebound reset instructions to the control module, so that the control module controls the second electromagnetic valve to restore factory working current; the compression reset control is used for receiving compression reset instructions and sending the compression reset instructions to the control module, so that the control module controls the first electromagnetic valve to restore the factory working current.

2. The damper of claim 1, wherein The first electromagnetic valve is a compression adjustment valve, used for controlling flow of oil from the intermediate cylinder into the liquid storage chamber; the second electromagnetic valve is a rebound adjustment valve, used for controlling flow of the oil from the oil passage into the liquid storage chamber.

3. The damper of claim 1, wherein The connecting seat comprises a first accommodating cavity and a second accommodating cavity; The first accommodating cavity is used for assembling the first electromagnetic valve; the first electromagnetic valve is detachably connected to the connecting seat; The second accommodating cavity is used for assembling the second electromagnetic valve; the second electromagnetic valve is detachably connected to the connecting seat.

4. The damper of claim 3, wherein A surface of the first electromagnetic valve is provided with a first mark; a surface of the second electromagnetic valve is provided with a second mark.

5. The damper of claim 3, wherein A surface of the first electromagnetic valve is a first color; a surface of the second electromagnetic valve is a second color; the first color and the second color are different colors.

6. The damper of claim 1, wherein Further comprise: A piston assembly and a spring; the piston assembly comprises a piston valve system and a piston rod; The piston rod is fixedly connected with the piston valve system; the piston valve system is in sliding connection with the inner wall of the intermediate cylinder; the piston rod is used to drive the piston valve system to slide along the inner wall of the intermediate cylinder; The piston rod is provided with a first limiting structure; the first cylinder body assembly is provided with a second limiting structure; the spring is arranged between the first limiting structure and the second limiting structure.

7. The damper of claim 1, wherein Further comprising: A control module; The control module is electrically connected with the first electromagnetic valve and the second electromagnetic valve respectively, and is used to control the conduction and turn-off of the first electromagnetic valve and the second electromagnetic valve.

8. A shock absorber control method characterized by, The shock absorber is suitable for the shock absorber of any one of the above claims 1-7, and the shock absorber comprises a control panel and a control module; the control panel comprises at least a rebound adjustment control and a compression adjustment control; The shock absorber control method comprises: According to the road condition, input the compression adjustment instruction to the compression adjustment control to adjust the working current of the first electromagnetic valve, and input the rebound adjustment instruction to the rebound adjustment control to adjust the working current of the second electromagnetic valve; the road condition at least includes highway mode, high speed mode and mountain road mode.

9. The damper control method according to claim 8, characterized by, Specifically comprising: If the road condition is highway mode, the working current of the first electromagnetic valve and the second electromagnetic valve is adjusted to be a first current; If the road condition is high speed mode, the working current of the first electromagnetic valve and the second electromagnetic valve is adjusted to be a second current; If the road condition is mountain road mode, the working current of the first electromagnetic valve and the second electromagnetic valve is adjusted to be a third current; the second current is greater than the first current; the third current is greater than the second current.

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