Damper, shock absorber, suspension system and vehicle

Abstract

The application relates to a damper, a shock absorber, a suspension system and a vehicle. The damper comprises a cylinder, a first piston, a piston cylinder and a pump body. The cylinder is provided with a first channel, and the cylinder is used for being connected with one of a vehicle body or a vehicle wheel. The first piston is arranged in the first channel, and the first piston can generate a damping force during movement in the first channel. A piston rod is arranged in the cylinder and connected with the first piston, and the piston rod is used for being connected with the other one of the vehicle body or the vehicle wheel. The pump body is used for transmitting a first fluid with the first channel to control the position of the first piston in the first channel. The application aims to enrich the functions of the damper.

Description

Technical Field

[0001] This application relates to the field of damper technology, and more particularly to a damper, shock absorber, suspension system and vehicle. Background Technology

[0002] The vehicle includes a suspension system, which includes shock absorbers, and the shock absorbers include dampers.

[0003] In related technologies, dampers can only adjust the damping force, which makes the function of dampers relatively simple. Utility Model Content

[0004] This application provides a damper, shock absorber, suspension system, and vehicle, aiming to enrich the functionality of the damper.

[0005] To achieve the above objectives, according to a first aspect of this application, a damper is provided, comprising:

[0006] The cylinder body is provided with a first channel, and the cylinder body is used to connect to one of the vehicle body or the wheel;

[0007] A first piston is disposed in the first channel, and the first piston is capable of generating a damping force during its movement in the first channel;

[0008] A piston rod, passing through the cylinder and connected to the first piston, is used for connection to another component, either the vehicle body or a wheel; and

[0009] A pump body is used to transmit a first fluid to the first channel in order to control the position of the first piston in the first channel.

[0010] Optionally, the damper further includes a magnetorheological fluid and an electromagnetic coil. The magnetorheological fluid is disposed in the first channel, and the first piston is provided with a second channel. In the extending direction of the first channel, the two openings of the second channel are respectively disposed on opposite sides of the first piston. The magnetorheological fluid is used to flow through the second channel, and the electromagnetic coil is used to generate a magnetic field on the magnetorheological fluid flowing through the second channel.

[0011] Optionally, the damper further includes a second piston movably disposed in the first channel. The first channel includes a first cavity and a second cavity. The second piston is used to separate the first cavity and the second cavity. The first cavity contains a first fluid, and the second cavity contains a magnetorheological fluid.

[0012] Optionally, the damper further includes a third piston, which is movably disposed in the first channel. The second piston and the third piston are disposed on both sides of the first piston. The second piston and the third piston are used to divide the first channel into a first cavity, a second cavity, and a third cavity arranged sequentially. The pump body is used to transmit the first fluid with the first cavity and the third cavity. The magnetorheological fluid is disposed in the second cavity.

[0013] Optionally, the first cavity is connected to the pump body, and the third cavity is connected to the pump body, wherein the pump body is used to transfer the first fluid between the first cavity and the second cavity.

[0014] Optionally, the damper further includes a first conduit, through which the first cavity is connected to the pump body;

[0015] And / or, the damper further includes a second conduit, through which the third cavity is connected to the pump body.

[0016] Optionally, the cylinder body is further provided with a receiving cavity, the receiving cavity being connected to the first channel, the pump body being used to transmit the first fluid to the receiving cavity, and the damper further includes an accumulator, the accumulator being disposed in the receiving cavity.

[0017] Optionally, the accumulator is configured as a gas accumulator.

[0018] Optionally, the damper further includes a switch for controlling the on / off state of the first channel and the pump body.

[0019] Optionally, the switch is configured as a control valve, the control valve including a valve body and a valve core disposed on the valve body, the two ends of the valve body being connected to the first channel and the pump body respectively, and the valve core being used to control the on / off state of the first channel and the pump body.

[0020] Optionally, the damper further includes a first pipeline, the valve body is disposed on the cylinder body to communicate with the first channel, and the first pipeline connects the valve body and the pump body.

[0021] Optionally, the damper further includes a push rod, which is movably mounted on the valve body and connected to the valve core. The push rod controls the opening and closing of the first channel and the pump body by pushing and pulling the valve core.

[0022] Optionally, the first fluid is configured as oil.

[0023] According to a second aspect of this application, a shock absorber is provided, including the aforementioned damper.

[0024] According to a third aspect of this application, a suspension system is also provided, including the aforementioned shock absorber.

[0025] According to a fourth aspect of this application, a vehicle is also provided, including the aforementioned suspension system.

[0026] In the damper of this embodiment, the pump body is used to transmit a first fluid to the first channel to control the position of the first piston in the first channel. Adding or removing the first fluid to one side of the first piston changes the force on the first piston, causing it to move in the first channel and thus changing its position. This changes the relative position of the piston rod and the cylinder, resulting in a different height difference between the vehicle body and the wheels, thereby adjusting the vehicle height. A higher vehicle body improves the vehicle's passability, while a lower vehicle body improves its handling. This makes the damper more versatile in function.

[0027] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0030] Figure 1 This is a schematic diagram of the overall structure of the damper provided in an exemplary embodiment of this disclosure.

[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0033] Figure 4 yes Figure 1 Enlarged view of point C in the middle;

[0034] Figure 5 yes Figure 1 Enlarged view at point D;

[0035] Figure 6 yes Figure 1A schematic diagram of the structure of the damper, in which the switch is in the closed state, and the arrow shown in the diagram indicates the direction of fluid flow in the damper when the first piston approaches the second piston;

[0036] Figure 7 yes Figure 1 A schematic diagram of the structure of the damper, in which the switch is in the closed state, and the arrow shown in the diagram indicates the direction of fluid flow in the damper when the first piston approaches the third piston;

[0037] Figure 8 yes Figure 1 A schematic diagram of the structure of the damper, in which the switch is in the open state, and the arrow shown in the diagram indicates the direction of fluid flow in the damper when the pump delivers the first fluid in the third chamber to the first chamber;

[0038] Figure 9 yes Figure 1 A schematic diagram of the damper is shown, in which the switch is in the open state, and the arrows shown in the diagram indicate the flow direction of the fluid in the damper when the pump body delivers the first fluid to the first and third chambers.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100, Damper; 200, Cylinder; 210, First Channel; 220, First Chamber; 230, Second Chamber; 231, Restoration Chamber; 232, Compression Chamber; 240, Third Chamber; 250, Receiving Chamber; 310, First Piston; 311, Second Channel; 320, Second Piston; 330, Third Piston; 410, Pump Body; 420, First Pipeline; 430, Second Pipeline; 440, Valve Body; 450, Valve Core; 460, Switch; 470, Push Rod; 500, Accumulator; 610, Piston Rod; 620, Guide Body; 630, Guide Oil Seal; 640, Sliding Bearing; 650, Buffer Block. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0042] According to the first aspect of this application, referring to Figures 1 to 5This disclosure provides a damper 100. The damper 100 includes a cylinder body 200, a first piston 310, a piston cylinder, and a pump body 410. The cylinder body 200 has a first channel 210 and is used to connect to either a vehicle body or a wheel. The first piston 310 is disposed in the first channel 210 and is capable of generating a damping force during movement within the first channel 210. A piston rod 610 passes through the cylinder body 200 and is connected to the first piston 310, and is used to connect to the other vehicle body or wheel. The pump body 410 is used to transmit a first fluid through the first channel 210 to control the position of the first piston 310 in the first channel 210.

[0043] The pump body 410 is used to transmit a first fluid through the first channel 210 to control the position of the first piston 310 in the first channel 210. Adding or removing the first fluid to one side of the first piston 310 changes the force on the first piston 310, causing it to move within the first channel 210 and thus changing its position. This changes the relative position of the piston rod 610 and the cylinder 200, resulting in a different height difference between the vehicle body and the wheels, thereby adjusting the vehicle height. A higher vehicle body improves passability, while a lower vehicle body improves handling. This makes the damper 100 more versatile in function.

[0044] In some embodiments, the damper 100 further includes a magnetorheological fluid and an electromagnetic coil. The magnetorheological fluid is disposed in the first channel 210, and the first piston 310 is provided with a second channel 311. In the extending direction of the first channel 210, the two openings of the second channel 311 are respectively disposed on opposite sides of the first piston 310. The magnetorheological fluid is used to flow through the second channel 311, and the electromagnetic coil is used to generate a magnetic field for the magnetorheological fluid flowing through the second channel 311.

[0045] The rheological properties of magnetorheological fluids allow them to rapidly change viscosity under the influence of a magnetic field, thereby altering the magnitude of the damping force. By controlling the current intensity of the electromagnetic coil, the strength of the magnetic field can be precisely adjusted, enabling real-time dynamic adjustment of the damping force. This adjustment speed is far superior to traditional mechanical damping force adjustment methods, allowing for rapid response to changes in road conditions during vehicle operation, such as bumps, turns, acceleration, and braking.

[0046] The electromagnetic coil has high precision in controlling the magnetic field, enabling fine-tuning of the damping force. This means that the damper 100 can precisely adjust the damping force according to the vehicle's driving conditions and the driver's preferences, thus providing a more refined and personalized driving experience. For example, at high speeds, the damping force can be slightly increased to improve vehicle stability; in comfort mode, the damping force can be appropriately reduced to decrease the feeling of bumps.

[0047] The damping force adjustment of the magnetorheological damper 100 mainly relies on changes in the magnetic field, rather than the wear of traditional mechanical components. Compared with the conventional hydraulic damper 100, the magnetorheological damper 100 has a simpler internal structure, reducing friction and wear between mechanical components, thereby improving the reliability and durability of the system.

[0048] The magnetorheological damper 100 can automatically adjust the damping force according to the real-time status of the vehicle, avoiding fatigue damage to components caused by prolonged exposure to high or low loads. This adaptive capability enables the damper 100 to maintain good working condition under various operating conditions.

[0049] It is worth mentioning that the first electromagnetic coil can be located on the first piston 310 or on the cylinder 200, without any limitation. Furthermore, it is understood that the second channel 311 is connected to the first channel 210.

[0050] However, this design is not limited to this. In some other embodiments, the damping force may be generated in other ways, but not limited to those described in the relevant art. No limitation is made here.

[0051] In some embodiments, the damper 100 further includes a second piston 320, which is movably disposed in the first channel 210. The first channel 210 includes a first cavity 220 and a second cavity 230. The second piston 320 is used to separate the first cavity 220 and the second cavity 230. The first cavity 220 is provided with a first fluid, and the second cavity 230 is provided with a magnetorheological fluid.

[0052] Separating the two fluids prevents mixing or cross-contamination between the magnetorheological fluid and the first fluid. The properties of the magnetorheological fluid (such as viscosity and rheology) may be affected by other fluids, thus impacting the accuracy of damping force adjustment. The separation provided by the second piston 320 ensures that the magnetorheological fluid maintains its properties, thereby improving the stability and reliability of the damper 100.

[0053] In some embodiments, the damper 100 further includes a third piston 330, which is movably disposed in the first channel 210. The second piston 320 and the third piston 330 are disposed on both sides of the first piston 310. The second piston 320 and the third piston 330 are used to divide the first channel 210 into a first cavity 220, a second cavity 230 and a third cavity 240 disposed sequentially. The pump body 410 is used to transmit a first fluid with the first cavity 220 and the third cavity 240. The magnetorheological fluid is disposed in the second cavity 230.

[0054] Separating the two fluids prevents mixing or cross-contamination between the magnetorheological fluid and the first fluid. The properties of the magnetorheological fluid (such as viscosity and rheology) may be affected by other fluids, thus impacting the accuracy of damping force adjustment. The separation provided by the second piston 320 ensures that the magnetorheological fluid maintains its properties, thereby improving the stability and reliability of the damper 100.

[0055] For ease of explanation, this text uses a damper 100 installed in a vehicle as an example. In the vehicle's height direction, a third piston 330, a first piston 310, and a second piston 320 are sequentially arranged, with the third piston 330 closer to the top of the vehicle. Thus, the pump body 410 can raise the vehicle's height by supplying first fluid to the first chamber 220 and receiving first fluid from the third chamber 240. The pump body 410 can lower the vehicle's height by supplying first fluid to the third chamber 240 and receiving first fluid from the first chamber 220.

[0056] It is worth mentioning that the first piston 310 restricts the second cavity 230 to form a compression cavity 232 and a recovery cavity 231, which are connected by the second channel 311.

[0057] In some embodiments, the first cavity 220 is connected to the pump body 410, and the third cavity 240 is connected to the pump body 410. The pump body 410 is used to transfer the first fluid between the first cavity 220 and the second cavity 230.

[0058] Thus, when the vehicle body needs to be raised, the fluid can be transferred from the third chamber 240 to the first chamber 220. When the vehicle body needs to be lowered, the fluid can be transferred from the first chamber 220 to the third chamber 240.

[0059] In some embodiments, the damper 100 further includes a first conduit 420, through which the first cavity 220 is connected to the pump body 410. However, this design is not limited to this; in some other embodiments, the pump body 410 is directly disposed on the cylinder body 200, and the first cavity 220 is directly connected to the pump body 410.

[0060] In some embodiments, the damper 100 further includes a second conduit 430, and the third cavity 240 is connected to the pump body 410 through the second conduit 430. However, the design is not limited to this. In some other embodiments, the pump body 410 is directly disposed on the cylinder body 200, and the third cavity 240 is directly connected to the pump body 410.

[0061] In some embodiments, the cylinder 200 further includes a receiving cavity 250, which communicates with the first channel 210. The pump body 410 is also used to transfer the first fluid through the receiving cavity 250. The damper 100 further includes an accumulator 500, which is disposed in the receiving cavity 250. Thus, the accumulator 500 can compensate for the volume difference generated during the movement of the first piston 310 in the first channel 210.

[0062] In some embodiments, the accumulator 500 is configured as a gas accumulator 500.

[0063] Reference Figure 9 When the gas inside the accumulator 500 is affected by the low temperature, the gas pressure drops. Therefore, switch 460 can be opened to connect pump 410 to the first channel 210, allowing pump 410 to deliver the first fluid to the receiving cavity 250. As the pressure of the first fluid applied to the accumulator 500 increases, the accumulator 500 is compressed under the pressure of the first fluid until the gas pressure inside the accumulator 500 matches the pressure applied by the first fluid. Then, switch 460 is closed to disconnect pump 410 from the first channel 210. This improves the problem of damping force collapse of the damper 100 in low-temperature environments, ensuring the vehicle's driving stability in low-temperature conditions.

[0064] In one example, the gas in the accumulator 500 is affected by the low temperature, causing a drop in gas pressure. Therefore, switch 460 can be turned on to connect pump 410 to the first chamber 220. During the process of pump 410 delivering the first fluid to the first chamber 220 and the third chamber 240, the second piston 320 and the third piston 330 jointly apply pressure to the magnetorheological fluid in the third chamber 240, thereby enabling the first piston 310 to maintain its position in the first channel 210; that is, the position of the first piston 310 in the first channel 210 is not adjusted at this time.

[0065] Since the receiving cavity 250 is connected to the first cavity 220, the first fluid can enter the receiving cavity 250 through the first cavity 220. As the pressure inside the first cavity 220 increases, the accumulator 500 will be compressed under the pressure of the first fluid until the air pressure inside the accumulator 500 matches the pressure applied by the first fluid. Then, the switch 460 is turned off to disconnect the pump body 410 from the first channel 210. In this way, the problem of damping force collapse of the damper 100 in low-temperature environments is improved, ensuring the driving stability of the vehicle in low-temperature environments.

[0066] However, this design is not limited to this. In some other embodiments, the type of energy storage device 500 may be, but is not limited to, the related art, and is not limited herein.

[0067] In some embodiments, the damper 100 further includes a switch 460 for controlling the on / off state of the first channel 210 and the pump body 410.

[0068] Thus, when the damper 100 is adjusting its damping, the switch 460 can be closed to disconnect the first channel 210 and the pump body 410. In this way, the damping generated by the damper 100 will not be affected by the pump body 410. To adjust the height of the vehicle body relative to the wheels, the switch 460 can be opened to connect the first channel 210 and the pump body 410. The pump body 410 controls the position of the first piston 310 in the first channel 210 by transmitting first fluid through the first channel 210, thereby adjusting the height of the vehicle body relative to the vehicle.

[0069] In one example, when the damper 100 is being adjusted, the switch 460 is closed to disconnect the pump body 410 from the first chamber 220. The damping function of the damper 100 itself is not affected by the pump body 410.

[0070] When the vehicle body height needs to be raised, switch 460 is turned on to connect pump body 410 to the first chamber 220. Pump body 410 delivers a first fluid to the first chamber 220, and the pressure of the first fluid raises the vehicle body. When the vehicle body is raised to the required position, switch 460 is turned off to disconnect pump body 410 from the first chamber 220, thus maintaining the vehicle body height at a certain position.

[0071] When the vehicle height needs to be lowered, switch 460 opens, connecting pump 410 to the first chamber 220. Pump 410 delivers a first fluid to the first chamber 220 and the third chamber 240. The third piston 330 rapidly lowers under the pressure of the first fluid and the vehicle's weight. When the vehicle reaches the desired position, switch 460 closes, disconnecting pump 410 from the first chamber 220 and maintaining the vehicle height at a certain level. A higher vehicle height effectively improves the vehicle's passability, while a lower vehicle height improves its handling, meeting the performance requirements of different road conditions.

[0072] In some embodiments, switch 460 is configured as a control valve, which includes a valve body 440 and a valve core 450 disposed on the valve body 440. Both ends of the valve body 440 are respectively connected to the first channel 210 and the pump body 410, and the valve core 450 is used to control the on / off state of the first channel 210 and the pump body 410. However, this design is not limited to this. In some other embodiments, switch 460 can be of other types, which are not limited here, as long as it can control the on / off state of the first channel 210 and the pump body 410.

[0073] In some embodiments, the damper 100 further includes a first conduit 420, a valve body 440 disposed on the cylinder body 200 to communicate with the first channel 210, and the first conduit 420 connecting the valve body 440 and the pump body 410.

[0074] In one example, one end of the valve body 440 is located in the cylinder 200 to communicate with the first cavity 220, and the other end is connected to the first pipeline 420.

[0075] However, this design is not limited to this. In some other embodiments, one end of the valve body 440 is located in the cylinder body 200 to communicate with the first channel 210, and the other end of the valve body 440 is located in the pump body 410 to communicate with the pump body 410.

[0076] In some embodiments, the damper 100 further includes a push rod 470, which is movably mounted on the valve body 440 and connected to the valve core 450. The push rod 470 controls the opening and closing of the first channel 210 and the pump body 410 by pushing and pulling the valve core 450. However, this design is not limited to this. In some other embodiments, the damper 100 also includes a rotating rod connected to the valve core 450. The rotating rod controls the passage of the first channel 210 and the pump body 410 by rotation.

[0077] In some embodiments, the first fluid is configured as oil. Oil has low compressibility, which allows the damper 100 to respond quickly when adjusting the vehicle height. However, the design is not limited to this; in some other embodiments, the first fluid is configured as gas.

[0078] To better understand the damper 100 of this application, the overall design of the damper 100 is described here. Without loss of generality, this paper takes the damper 100 installed in a vehicle as an example, wherein in the height direction of the vehicle, the third piston 330, the first piston 310, the second piston 320, and the accumulator 500 are arranged in sequence, wherein the third piston 330 is closer to the top of the vehicle.

[0079] Reference Figure 6 When the damper 100 is in its compression stroke, that is, when the piston rod 610 of the damper 100 moves downward, since the piston rod 610 is relatively fixed with the first piston 310, the magnetorheological fluid inside the damper 100 located in the compression chamber 232 is subjected to the pressure of the first piston 310. Part of the magnetorheological fluid will flow downward and reach the top of the second piston 320, and then transmit the pressure to the second piston 320. At this time, the second piston 320 will slide downward. Since the switch 460 is closed, the liquid volume in the first chamber 220 is constant. The downward sliding of the second piston 320 will compress the gas in the accumulator 500 through the liquid in the first chamber 220; another part of the magnetorheological fluid will flow through the second channel 311 of the piston assembly into the recovery chamber 231 until the pressure balance is reached.

[0080] Reference Figure 7 When the damper 100 is in its stretching stroke, that is, when the piston rod 610 inside the damper 100 moves upward, the magnetorheological fluid located in the recovery chamber 231 inside the damper 100 is subjected to the pressure of the first piston 310 and reaches the compression chamber 232 inside the damper 100 through the second channel 311 of the first piston 310. Because the first piston 310 generates a volume difference when it reciprocates, this volume difference can be made up by the compression / expansion of the gas in the accumulator 500 due to the characteristic that the magnetorheological fluid is difficult to compress. Therefore, during the recovery phase, the second piston 320 slides upward, and the magnetorheological fluid above the second piston 320 will return to the compression chamber 232 until the pressure balance is reached.

[0081] Reference Figure 6 and Figure 7 The damper 100 of this application has a damping force adjustment function. The working principle is as follows: During the compression stroke, the first piston 310 in the damper 100 moves downward. A portion of the magnetorheological fluid in the compression chamber 232 passes through the second channel 311 of the first piston 310. At this time, the electromagnetic coil is energized, and a magnetic field is formed between the coil channels. The strength of the magnetic field is determined by the magnitude of the current. Under the action of the magnetic field, the viscosity of the magnetorheological fluid increases and the yield stress is enhanced, thereby forming a pressure difference between the recovery chamber 231 and the compression chamber 232 of the damper 100. The damping force can be effectively controlled by controlling the magnitude of the applied current. During the recovery stroke, the first piston 310 inside the damper 100 moves upward. A portion of the magnetorheological fluid in the recovery chamber 231 flows from inside the recovery chamber 231 through the second channel 311 of the piston assembly to the compression chamber 232. At the same time, the electromagnetic coil is energized. Under the action of the magnetic field, the viscosity of the magnetorheological fluid increases and the yield stress is enhanced, thereby creating a pressure difference between the recovery chamber 231 and the compression chamber 232 of the damper 100, generating a greater damping force.

[0082] Reference Figure 8The damper 100 of this application has a vehicle height adjustment function, and its working principle is as follows: When the vehicle height needs to be raised, switch 460 is turned on, and pump 410 delivers oil through first pipeline 420 to first chamber 220. Due to the difficult-to-compress nature of oil, the oil in first chamber 220 generates bidirectional hydraulic pressure, compressing the air chamber downwards and the second piston 320 upwards. The second piston 320 slides upwards, applying pressure to the magnetorheological fluid in compression chamber 232, thereby pushing the first piston 310 to slide upwards. The magnetorheological fluid in the recovery chamber 231, under the pressure of the first piston 310, reaches the inside of the damper 100 compression chamber 232 through the second channel 311 of the piston assembly. At the same time, because the first piston 310 generates a volume difference during reciprocating motion, this volume difference can be compensated by the upward sliding of the second piston 320 due to the difficult-to-compress nature of the magnetorheological fluid. After the required height is achieved, switch 460 is turned off, keeping the vehicle height at a certain position. When the vehicle height needs to be lowered, switch 460 is turned on. Pump 410 delivers oil through the second pipeline 430 to the third chamber 240. The third piston 330 slides downward under hydraulic pressure, causing the magnetorheological fluid in the restoration chamber 231 to move downward, which in turn pushes the piston assembly downward, thus lowering the vehicle height. Once the required height is reached, switch 460 is turned off, maintaining the vehicle height at a certain position.

[0083] In some embodiments, the damper 100 further includes a guide body 620, a guide oil seal 630, a sliding bearing 640, and a buffer block 650. The guide body 620 is located in the cylinder 200. The guide pump body 410 engages with the piston rod 610 via the guide oil seal 630 and the piston rod 610 via the sliding bearing 640. The buffer block 650 is located on the piston rod 610 and is positioned between the third piston 330 and the first piston 310.

[0084] According to a second aspect of this disclosure, a second shock absorber is provided, which includes the damper 100 described above. This shock absorber has all the beneficial effects of the damper 100 described above, which will not be repeated here.

[0085] According to a third aspect of this disclosure, a second suspension system is provided, which includes the aforementioned shock absorber. This suspension system possesses all the beneficial effects of the aforementioned shock absorber, which will not be elaborated further herein.

[0086] According to a fourth aspect of this disclosure, a second vehicle is provided, which includes the aforementioned suspension system. This vehicle possesses all the beneficial effects of the aforementioned suspension system, which will not be elaborated further herein.

[0087] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0088] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0089] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0090] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0091] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A damper characterized by, include: The cylinder body is provided with a first channel, and the cylinder body is used to connect to one of the vehicle body or the wheel; A first piston is disposed in the first channel, and the first piston is capable of generating a damping force during its movement in the first channel; A piston rod passes through the cylinder and is connected to the first piston; the piston rod is used to connect to another vehicle body or wheel. as well as A pump body is used to transmit a first fluid to the first channel in order to control the position of the first piston in the first channel.

2. The damper of claim 1, wherein The damper further includes a magnetorheological fluid and an electromagnetic coil. The magnetorheological fluid is disposed in the first channel, and the first piston is provided with a second channel. In the extending direction of the first channel, the two openings of the second channel are respectively disposed on opposite sides of the first piston. The magnetorheological fluid is used to flow through the second channel, and the electromagnetic coil is used to generate a magnetic field on the magnetorheological fluid flowing through the second channel.

3. The damper of claim 2, wherein, The damper further includes a second piston, which is movably disposed in the first channel. The first channel includes a first cavity and a second cavity. The second piston is used to separate the first cavity and the second cavity. The first cavity contains a first fluid, and the second cavity contains a magnetorheological fluid.

4. The damper of claim 3, wherein The damper further includes a third piston, which is movably disposed in the first channel. The second piston and the third piston are disposed on both sides of the first piston. The second piston and the third piston are used to divide the first channel into a first cavity, a second cavity, and a third cavity arranged sequentially. The pump body is used to transmit the first fluid with the first cavity and the third cavity. The magnetorheological fluid is disposed in the second cavity.

5. The damper of claim 4, wherein, The first cavity is connected to the pump body, and the third cavity is connected to the pump body. The pump body is used to transfer the first fluid between the first cavity and the second cavity.

6. The damper of claim 5, wherein, The damper further includes a first pipeline, and the first cavity is connected to the pump body through the first pipeline; And / or, the damper further includes a second conduit, through which the third cavity is connected to the pump body.

7. The damper of claim 4, wherein The cylinder body is also provided with a receiving cavity, which is connected to the first channel. The pump body is also used to transmit the first fluid to the receiving cavity. The damper also includes an accumulator, which is located in the receiving cavity.

8. The damper of claim 7, wherein, The accumulator is configured as a gas accumulator.

9. The damper of claim 1, wherein, The damper also includes a switch for controlling the on / off state of the first channel and the pump body.

10. The damper of claim 9, wherein, The switch is configured as a control valve, which includes a valve body and a valve core disposed on the valve body. The two ends of the valve body are respectively connected to the first channel and the pump body, and the valve core is used to control the opening and closing of the first channel and the pump body.

11. The damper of claim 10, wherein, The damper also includes a first pipeline, the valve body is disposed on the cylinder body to communicate with the first channel, and the first pipeline connects the valve body and the pump body.

12. The damper of claim 10, wherein, The damper also includes a push rod, which is movably mounted on the valve body and connected to the valve core. The push rod controls the opening and closing of the first channel and the pump body by pushing and pulling the valve core.

13. The damper of claim 1, wherein, The first fluid is configured as oil.

14. A shock absorber characterized by Includes the damper as described in any one of claims 1 to 13.

15. A suspension system characterized by, Includes the shock absorber as described in claim 14.

16. A vehicle characterized by comprising: Includes the suspension system as described in claim 15.

Images