External magnetorheological damper, chassis assembly and vehicle

Abstract

The utility model relates to the field of shock absorbers, and discloses an external magneto-rheological shock absorber which comprises a piston cylinder (1), a piston is arranged in the piston cylinder (1), a heating device (121) is arranged in the piston, and the piston cylinder (1) is suitable for containing magneto-rheological fluid. The external magneto-rheological shock absorber can also have good damping adjusting capacity in a low-temperature environment.

Description

Technical Field

[0001] The utility model relates to the field of shock absorbers, in particular to an external magnetorheological shock absorber, and further to a chassis assembly and a vehicle. Background Art

[0002] With the continuous updating and iteration of technology, in order to pursue the ultimate performance of the vehicle, some high-end cars use electromagnetic suspension, that is, magnetorheological shock absorbers are used instead of traditional shock absorbers or electronically controlled shock absorbers.

[0003] In the existing magnetorheological damper, when the ambient temperature is low in winter, the viscosity coefficient of the magnetorheological fluid will be affected by the temperature and increase, which will affect the electromagnetic adjustment component to adjust the viscosity coefficient of the magnetorheological fluid.

[0004] Therefore, it is necessary to design a new type of external magnetorheological shock absorber to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an external magnetorheological damper, which can solve the problem that the viscosity coefficient of magnetorheological fluid is difficult to adjust in a low-temperature environment.

[0006] In order to solve the above technical problems, the first aspect of the utility model provides an external magnetorheological damper, comprising:

[0007] A piston cylinder is provided with a piston in the piston cylinder, a heating device is provided in the piston, and the piston cylinder is suitable for containing magnetorheological fluid.

[0008] Furthermore, the piston comprises a piston head and a piston rod, and the heating device is arranged in the piston head and / or the piston rod.

[0009] Furthermore, the heating device is arranged in the piston rod and extends along the axial direction of the piston rod.

[0010] Furthermore, it also includes: an electromagnetic adjustment component, which is arranged outside the piston cylinder, the electromagnetic adjustment component is communicated with the inside of the piston cylinder, and the magnetorheological fluid can flow through the electromagnetic adjustment component.

[0011] Furthermore, the piston cylinder comprises:

[0012] A main cylinder body, wherein the piston is arranged in the main cylinder body, so as to separate the main cylinder body into a first cavity and a second cavity via the piston head, wherein the first cavity and the second cavity are both suitable for containing magnetorheological fluid;

[0013] a first connecting cylinder body, the first connecting cylinder body being in communication with the first cavity;

[0014] and a second connecting cylinder body, wherein the second connecting cylinder body is communicated with the first cavity body.

[0015] Furthermore, the electromagnetic adjustment component comprises:

[0016] a first electromagnetic adjustment component, the first electromagnetic adjustment component being in communication with the first connecting cylinder and the second cavity;

[0017] and a second electromagnetic adjustment component, wherein the second electromagnetic adjustment component is in communication with the second connecting cylinder and the second cavity.

[0018] Further, a second cylinder end cover is provided at the end of the second connecting cylinder, a second cylinder seal and a buffer block are provided on the side of the second cylinder end cover facing the inside of the second connecting cylinder, and the second cylinder seal abuts between the second cylinder end cover and the buffer block.

[0019] Furthermore, a first connection seal is provided at the connection between the first connection cylinder and the first electromagnetic adjustment component, and a second connection seal is provided at the connection between the second connection cylinder and the second electromagnetic adjustment component.

[0020] Furthermore, the first electromagnetic adjustment component includes:

[0021] A first component outer shell, wherein a first component accommodating cavity is formed in the first component outer shell;

[0022] a first electromagnetic coil controlled valve body, the first electromagnetic coil controlled valve body being capable of dividing the first component accommodating chamber into a first component liquid inlet chamber and a first component liquid outlet chamber, the first component liquid inlet chamber being communicated with the first connecting cylinder body, the first component liquid outlet chamber being communicated with the second chamber, and a first valve body flow gap being formed on the first electromagnetic coil controlled valve body, so as to communicate the first component liquid inlet chamber with the first component liquid outlet chamber via the first valve body flow gap;

[0023] And a first component one-way valve, wherein the first component one-way valve is connected with the first valve body flow gap.

[0024] Furthermore, the second electromagnetic adjustment component includes:

[0025] A second component outer shell, wherein a second component accommodating cavity is formed in the second component outer shell;

[0026] a second electromagnetic coil controlled valve body, the second electromagnetic coil controlled valve body being capable of dividing the second component accommodating chamber into a second component liquid inlet chamber and a second component liquid outlet chamber, the second component liquid inlet chamber being communicated with the second chamber, the second component liquid outlet chamber being communicated with the second connecting cylinder body, and a second valve body flow gap being formed on the second electromagnetic coil controlled valve body, so as to communicate the second component liquid inlet chamber with the second component liquid outlet chamber via the second valve body flow gap;

[0027] and a second component one-way valve, wherein the second component one-way valve is connected with the second valve body through a flow gap.

[0028] Furthermore, the piston rod passes through the first cavity and can be inserted into the second cavity, and the heating device is provided in the piston rod in the second cavity.

[0029] Furthermore, a guide seat assembly and a temperature sensor are provided at the port of the main cylinder body located in the first cavity, the temperature sensor is connected to the guide seat assembly, and the temperature sensor can be inserted into the first cavity, and a main cylinder body end cover is provided at the port of the main cylinder body located in the second cavity, and a connecting ear is provided on the main cylinder body end cover.

[0030] A second aspect of the utility model provides a chassis assembly, which includes the external magnetorheological damper in the above technical solution.

[0031] A third aspect of the utility model provides a vehicle, which includes the chassis assembly in the above technical solution.

[0032] Through the above technical solution, the beneficial effects of the utility model are as follows:

[0033] The first aspect of the utility model provides an external magnetorheological shock absorber, including a piston and a piston cylinder. The heating device in the piston can heat the magnetorheological fluid in the piston cylinder when the ambient temperature is low and the viscosity of the magnetorheological fluid is too large, thereby eliminating the influence of the magnetorheological fluid temperature that is too low on the adjustment of the damping force, so as to improve the comfort of the car in low temperature environment conditions.

[0034] The second aspect of the utility model provides a chassis assembly. Since the chassis assembly has the external magnetorheological shock absorber in the above technical solution, it also has all the technical advantages of the above external magnetorheological shock absorber, and can improve the driving quality of the vehicle, improve the comfort of the driver and passengers in the vehicle, and help to improve the handling performance of the vehicle.

[0035] The third aspect of the utility model provides a vehicle. Since the vehicle has the chassis assembly in the above technical solution, it also has all the technical advantages of the above chassis assembly.

[0036] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0038] Figure 1 It is a schematic structural diagram of the external magnetorheological damper of the utility model after being cut along its own axial direction;

[0039] Figure 2 It is a schematic diagram of the flow path of the magnetorheological fluid of the external magnetorheological damper of the utility model during the resetting process;

[0040] Figure 3 It is a schematic diagram of the flow path of the magnetorheological fluid of the external magnetorheological damper of the utility model during the compression process;

[0041] Figure 4 yes Figure 1 A magnified image of area A;

[0042] Figure 5 yes Figure 2 Magnified view of area B.

[0043] Description of Reference Numerals

[0044] 1. Piston cylinder 11. Piston head

[0045] 12. Piston rod 121. Heating device

[0046] 13. Main cylinder 131. Guide seat assembly

[0047] 132. Temperature sensor 133. Main cylinder end cover

[0048] 134, connecting ear 14, first connecting cylinder

[0049] 15. Second connecting cylinder 151, second cylinder end cover

[0050] 152. Second cylinder seal 153. Buffer block

[0051] 2. First electromagnetic adjustment component 21, first component outer shell

[0052] 22. First electromagnetic coil control valve body 221. First valve body flow clearance

[0053] 23. First component one-way valve 3. Second electromagnetic regulating component

[0054] 31. Second component outer shell 32. Second electromagnetic coil control valve body

[0055] 321, second valve body flow gap 33, second component one-way valve

[0056] 4. First connecting seal 5. Second connecting seal DETAILED DESCRIPTION

[0057] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the specific implementation modes described below.

[0058] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "provided with", "installed", "matched", and "connected" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate connector, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0060] In the present invention, unless otherwise specified, the directional words used, such as "inside" and "outside", are defined as the inside and outside of the corresponding parts. Specifically, in the drawings provided in the present invention, the orientation or positional relationship used is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the orientation terms of the present invention should be understood in conjunction with the actual installation state.

[0061] See also Figures 1 to 5The first aspect of the utility model provides an external magnetorheological damper, including a piston cylinder 1 and an electromagnetic adjustment component, a receiving chamber suitable for receiving magnetorheological fluid is formed in the cylinder body of the piston cylinder 1, and a piston is provided in the cylinder body of the piston cylinder 1, which may specifically include a piston head 11 and a piston rod 12, and a heating device 121 is provided in the piston head 11 and / or the piston rod 12, the electromagnetic adjustment component is arranged outside the piston cylinder 1, the electromagnetic adjustment component is connected to the inside of the piston cylinder 1, and the magnetorheological fluid can flow through the electromagnetic adjustment component.

[0062] Among them, magnetorheological fluid is a prior art, and the electromagnetic adjustment component can change the magnetic field strength, so that the viscosity coefficient (viscosity) of the magnetorheological fluid flowing through the electromagnetic adjustment component can decrease as the magnetic field strength weakens, or increase as the magnetic field strength increases, so that the viscosity coefficient of the magnetorheological fluid can be changed to adjust the damping force of the shock absorber, and the external electromagnetic adjustment component will not move with the piston in the cylinder body, so that the electromagnetic adjustment component is not easy to wear, thereby improving the service life of the electromagnetic adjustment component, and further enabling the external magnetorheological shock absorber to have a longer service life, and in a low temperature environment, the heating device 121 can heat the magnetorheological fluid so that the magnetorheological fluid maintains a relatively low viscosity coefficient, thereby eliminating the influence of the magnetorheological fluid temperature being too low on the damping force adjustment, so as to improve the comfort of the vehicle in a low temperature environment and extend the service life of the electromagnetic adjustment component.

[0063] Furthermore, if Figure 1 As shown, the piston cylinder 1 can be configured to include a main cylinder body 13, a first connecting cylinder body 14 and a second connecting cylinder body 15, wherein the main cylinder body 13 is provided with a piston head 11 and a piston rod 12, so that the interior of the main cylinder body 13 can be divided into a first cavity and a second cavity by the piston head 11. Specifically, the first connecting cylinder body 14 can be configured to be sleeved on the outside of the main cylinder body 13, and the first connecting cylinder body 14 can be communicated with the first cavity of the main cylinder body 13, and the second connecting cylinder body 15 can be configured to be sleeved on the outside of the first connecting cylinder body 14, and the second connecting cylinder body 15 can also be communicated with the first cavity of the main cylinder body 13.

[0064] The electromagnetic adjustment component includes a first electromagnetic adjustment component 2 and a second electromagnetic adjustment component 3. The first electromagnetic adjustment component 2 is connected to the first connecting cylinder 14 and the second cavity, and the second electromagnetic adjustment component 3 is connected to the second connecting cylinder 15 and the second cavity. The first electromagnetic adjustment component 2 and the second electromagnetic adjustment component 3 can both be configured to have unidirectional conduction capability, so that there is unidirectional conduction between the first connecting cylinder 14 and the second cavity and between the second connecting cylinder 15 and the second cavity.

[0065] Based on the above structural design, Figure 2 and Figure 3As shown, during the resetting process of the external magnetorheological shock absorber, the magnetorheological fluid in the first cavity of the main cylinder 13 will flow into the first connecting cylinder 14, and flow into the second cavity through the first electromagnetic regulating component 2. During the compression process of the external magnetorheological shock absorber, the magnetorheological fluid in the second cavity of the main cylinder 13 will flow into the second electromagnetic regulating component 3, and then flow from the second electromagnetic regulating component 3 into the second connecting cylinder 15, and finally flow from the second connecting cylinder 15 into the first cavity of the main cylinder 13, so that the compression and resetting oil circuits can be separated and controlled by independent electromagnetic regulating components, which can shorten the response time of the electromagnetic regulating component and improve the adjustable range of the damping force.

[0066] Furthermore, if Figure 1 As shown, a second cylinder end cover 151 is provided at the end of the second connecting cylinder 15, and a second cylinder seal 152 and a buffer block 153 are provided on the side of the second cylinder end cover 151 facing the inside of the second connecting cylinder 15, and the second cylinder seal 152 abuts between the second cylinder end cover 151 and the buffer block 153, so that the magnetorheological fluid in a high-pressure state can be buffered by the buffer block 153, reducing the direct impact of the magnetorheological fluid on the second cylinder end cover 151, and the second cylinder seal 152 is provided to prevent the magnetorheological fluid from flowing out of the second cylinder end cover 151. It can be understood that the second cylinder seal 152 can be a rubber sealing ring, which will be deformed when subjected to the pressure given by the buffer block 153, so as to better seal the gap at the connection between the second cylinder end cover 151 and the second connecting cylinder 15, and can play a better sealing role.

[0067] Furthermore, if Figure 1 As shown, a first connection seal 4 is provided at the connection between the first connection cylinder body 14 and the first electromagnetic adjustment component 2, so as to prevent the magnetorheological fluid from entering the second connection cylinder body 15 from the connection between the first connection cylinder body 14 and the first electromagnetic adjustment component 2 and causing cylinder cross-talk; a second connection seal 5 is provided at the connection between the second connection cylinder body 15 and the second electromagnetic adjustment component 3, so as to prevent the magnetorheological fluid from entering the second connection cylinder body 15 from the connection between the second connection cylinder body 15 and the second electromagnetic adjustment component 3 and causing cylinder cross-talk, so as to ensure that the magnetorheological fluid can pass through the first electromagnetic adjustment component 2 or the second electromagnetic adjustment component 3, so as to ensure the normal and effective electromagnetic damping adjustment function.

[0068] Furthermore, if Figure 4As shown, the first electromagnetic regulating component 2 includes a first component outer shell 21, a first electromagnetic coil controlled valve body 22 and a first component one-way valve 23. A first component accommodating chamber is formed in the first component outer shell 21. The first electromagnetic coil controlled valve body 22 is arranged in the first component accommodating chamber and can separate the first component accommodating chamber into a first component liquid inlet chamber and a first component liquid outlet chamber. The first component liquid inlet chamber is connected to the first connecting cylinder body 14, and the first component liquid outlet chamber is connected to the second chamber. The first electromagnetic coil controlled valve body 22 is an electromagnetic coil group, and a first valve body flow gap 221 is formed inside it to connect the first component liquid inlet chamber and the first component liquid outlet chamber via the first valve body flow gap 221. The first component one-way valve 23 is connected to the first valve body flow gap 221, so that the magnetorheological fluid can only flow from the first component liquid inlet chamber to the first component liquid outlet chamber.

[0069] Furthermore, if Figure 5 As shown, the second electromagnetic regulating component 3 includes a second component outer shell 31, a second electromagnetic coil controlled valve body 32 and a second component one-way valve 33. A second component accommodating chamber is formed in the second component outer shell 31. The second electromagnetic coil controlled valve body 32 is arranged in the second component accommodating chamber, and the second electromagnetic coil controlled valve body 32 can separate the second component accommodating chamber into a second component liquid inlet chamber and a second component liquid outlet chamber. The second component liquid inlet chamber is connected with the second chamber, and the second component liquid outlet chamber is connected with the second connecting cylinder body 15. The second electromagnetic coil controlled valve body 32 is an electromagnetic coil group, and a second valve body flow gap 321 is formed inside it to connect the second component liquid inlet chamber and the second component liquid outlet chamber via the second valve body flow gap 321. The second component one-way valve 33 is connected with the second valve body flow gap 321, so that the magnetorheological fluid can only flow from the second component liquid inlet chamber to the second component liquid outlet chamber.

[0070] Furthermore, if Figure 1 As shown, the heating device 121 extends along the axial direction of the piston rod 12. The piston rod 12 passes through the first cavity and can be inserted into the second cavity. The piston rod 12 in the second cavity is also provided with a heating device 121 to ensure uniform heating of the magnetorheological fluid.

[0071] Furthermore, if Figure 1 As shown, a guide seat assembly 131 and a temperature sensor 132 are provided at the port of the main cylinder 13 located in the first cavity, the temperature sensor 132 is connected to the guide seat assembly 131, and the temperature sensor 132 can be inserted into the first cavity to monitor the temperature of the magnetorheological fluid, and a main cylinder 13 end cover is provided at the port of the main cylinder 13 located in the second cavity, and a connecting ear 134 is provided on the end cover of the main cylinder 13 to facilitate the installation of an external magnetorheological damper.

[0072] The second aspect of the utility model provides a chassis assembly, which includes the external magnetorheological shock absorber in the above-mentioned technical solution. Therefore, the chassis assembly also has all the technical advantages of the above-mentioned external magnetorheological shock absorber, and can improve the driving quality of the vehicle, improve the comfort of the driver and passengers in the vehicle, and help to improve the handling performance of the vehicle.

[0073] The third aspect of the utility model provides a vehicle, which includes the chassis assembly in the above technical solution, and therefore also has all the technical advantages of the above chassis assembly.

[0074] The following describes the adjustment and control method and function of the external magnetorheological shock absorber of the present application in combination with some situations of vehicles in the driving process:

[0075] 1. Anti-roll control: It is used to prevent the body from rolling when the car is turning or driving along a curve. In the case of a sharp turn, the IMU (inertial measurement unit) captures the change in body posture and controls the electromagnetic coil group current in the external magnetorheological shock absorber to increase the compression damping force of the shock absorber on the steering side, thereby reducing the roll angle of the car body. At the same time, the electromagnetic coil group current in the external magnetorheological shock absorber on the steering side is reduced to reduce the tensile damping force on the steering side and reduce the risk of tire lifting off the ground.

[0076] 2. Anti-lift and anti-sinking control: used to prevent the rear end of the vehicle from sitting down when the car starts or accelerates suddenly. When the vehicle accelerates suddenly or starts, the front of the vehicle usually rises and the rear of the vehicle sinks. In order to control the lifting and sinking angles, the controller controls the electromagnetic coil group current in the external magnetorheological shock absorbers on the front and rear axles to increase, so as to increase the deformation damping force of the external magnetorheological shock absorbers on the front and rear axles of the vehicle.

[0077] 3. Body posture control: It is used to improve the stability of the body posture during driving. When the vehicle is driving on an uneven road on one side, a single side or a single external magnetorheological shock absorber is compressed, and the current of the electromagnetic coil group in the external magnetorheological shock absorber is reduced, thereby reducing the deformation damping force of the external magnetorheological shock absorber, reducing the change in body shaking, stabilizing the body posture, and increasing ride comfort.

[0078] 4. Bumpy road surface control: used to improve ride comfort on bumpy roads. When the wheel bouncing acceleration increases, the current of the electromagnetic coil group in the external magnetorheological shock absorber is reduced, thereby reducing the deformation damping force of the external magnetorheological shock absorber to increase ride comfort.

[0079] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0080] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0081] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An external magnetorheological damper, characterized in that: include: A piston cylinder (1), wherein a piston is arranged in the piston cylinder (1), a heating device (121) is arranged in the piston, and the piston cylinder (1) is suitable for accommodating magnetorheological fluid.

2. The external magnetorheological damper according to claim 1, characterized in that: The piston comprises a piston head (11) and a piston rod (12), and the heating device (121) is arranged in the piston head (11) and / or the piston rod (12).

3. The external magnetorheological damper according to claim 2, characterized in that: The heating device (121) is arranged in the piston rod (12) and extends along the axial direction of the piston rod (12).

4. The external magnetorheological damper according to claim 3, characterized in that: Also includes: An electromagnetic adjustment component is arranged outside the piston cylinder (1), the electromagnetic adjustment component is communicated with the inside of the piston cylinder (1), and the magnetorheological fluid can flow through the electromagnetic adjustment component.

5. The external magnetorheological damper according to claim 4, characterized in that: The piston cylinder (1) comprises: A main cylinder (13), wherein the piston is arranged in the main cylinder (13), so as to separate the main cylinder (13) into a first cavity and a second cavity via the piston head (11), wherein the first cavity and the second cavity are both suitable for containing magnetorheological fluid; A first connecting cylinder (14), the first connecting cylinder (14) being in communication with the first cavity; and a second connecting cylinder (15), wherein the second connecting cylinder (15) is communicated with the first cavity.

6. The external magnetorheological damper according to claim 5, characterized in that: The electromagnetic adjustment component comprises: A first electromagnetic adjustment component (2), the first electromagnetic adjustment component (2) being in communication with the first connecting cylinder (14) and the second cavity; and a second electromagnetic adjustment component (3), wherein the second electromagnetic adjustment component (3) is connected to the second connecting cylinder (15) and the second cavity.

7. The external magnetorheological damper according to claim 6, characterized in that: A second cylinder end cover (151) is provided at the end of the second connecting cylinder (15); a second cylinder seal (152) and a buffer block (153) are provided on the side of the second cylinder end cover (151) facing the inside of the second connecting cylinder (15); and the second cylinder seal (152) is abutted between the second cylinder end cover (151) and the buffer block (153).

8. The external magnetorheological damper according to claim 6, characterized in that: A first connection seal (4) is provided at the connection between the first connection cylinder (14) and the first electromagnetic adjustment component (2), and a second connection seal (5) is provided at the connection between the second connection cylinder (15) and the second electromagnetic adjustment component (3).

9. The external magnetorheological damper according to claim 6, characterized in that: The first electromagnetic adjustment component (2) comprises: A first component outer shell (21), wherein a first component accommodating cavity is formed in the first component outer shell (21); a first electromagnetic coil controlled valve body (22), the first electromagnetic coil controlled valve body (22) being capable of dividing the first component accommodating chamber into a first component liquid inlet chamber and a first component liquid outlet chamber, the first component liquid inlet chamber being in communication with the first connecting cylinder body (14), the first component liquid outlet chamber being in communication with the second chamber, and a first valve body flow gap (221) being formed on the first electromagnetic coil controlled valve body (22) so as to connect the first component liquid inlet chamber and the first component liquid outlet chamber via the first valve body flow gap (221); and a first component one-way valve (23), wherein the first component one-way valve (23) is connected to the first valve body flow gap (221).

10. The external magnetorheological damper according to claim 6, characterized in that: The second electromagnetic adjustment component (3) comprises: A second component outer shell (31), wherein a second component accommodating cavity is formed in the second component outer shell (31); a second electromagnetic coil controlled valve body (32), the second electromagnetic coil controlled valve body (32) being capable of dividing the second component accommodating chamber into a second component liquid inlet chamber and a second component liquid outlet chamber, the second component liquid inlet chamber being in communication with the second chamber, the second component liquid outlet chamber being in communication with the second connecting cylinder body (15), and a second valve body flow gap (321) being formed on the second electromagnetic coil controlled valve body (32) so as to communicate the second component liquid inlet chamber with the second component liquid outlet chamber via the second valve body flow gap (321); and a second component one-way valve (33), wherein the second component one-way valve (33) is connected to the second valve body flow gap (321).

11. The external magnetorheological damper according to claim 5, characterized in that: The piston rod (12) passes through the first cavity and can be inserted into the second cavity, and the heating device (121) is provided inside the piston rod (12) in the second cavity.

12. The external magnetorheological damper according to claim 11, characterized in that: The main cylinder (13) is provided with a guide seat assembly (131) and a temperature sensor (132) at the port of the first cavity, the temperature sensor (132) is connected to the guide seat assembly (131), and the temperature sensor (132) can be inserted into the first cavity, and the main cylinder (13) is provided with a main cylinder end cover (133) at the port of the second cavity, and the main cylinder end cover (133) is provided with a connecting ear (134).

13. A chassis assembly, characterized in that: The invention comprises the external magnetorheological damper according to any one of claims 1 to 12.

14. A vehicle, characterized in that: Includes the chassis assembly described in claim 13.

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