CN113915278A

CN113915278A - Magnetorheological damper structure and vehicle

Info

Publication number: CN113915278A
Application number: CN202111153209.8A
Authority: CN
Inventors: 瞿元; 王志超; 刘向红; 韦圣兵
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-11

Abstract

The invention discloses a magneto-rheological damper structure and a vehicle, and belongs to the technical field of vehicle parts. The structure comprises a piston rod, a shock absorber cylinder, an iron core coil, a first sealing element and a second sealing element; the shock absorber cylinder comprises a cylinder body, a top cover and a bottom cover, wherein the top cover is fixed at the first end of the cylinder body, the bottom cover is fixed at the second end of the cylinder body, and the top cover is provided with a first through hole; the outer wall of the first sealing element is abutted against the inner wall of the cylinder body; the outer wall of the second sealing element is abutted against the inner wall of the cylinder body; a magnetorheological fluid storage chamber is formed between the first sealing element and the second sealing element, and a cavity is formed between the second sealing element and the bottom cover; the iron core coil is positioned between the first sealing element and the second sealing element; the first sealing element is provided with a second through hole, and the second sealing element is provided with a third through hole; the first end of the piston rod is suitable for being connected with a vehicle body; the piston rod sequentially passes through the first through hole, the second through hole and the third through hole. The structure can resist larger lateral force and has better vibration reduction effect.

Description

Magnetorheological damper structure and vehicle

Technical Field

The invention relates to the technical field of vehicle parts, in particular to a magnetorheological damper structure and a vehicle.

Background

In order to quickly attenuate the vibration between a frame and a vehicle body and further ensure that the vehicle can run smoothly, a shock absorber is usually mounted on an automobile suspension system. Because the magneto-rheological damper can output continuous, variable and adjustable damping force, the stability and smoothness of the whole vehicle operation can be effectively improved, and the magneto-rheological damper is widely applied to a suspension system of a vehicle.

In the related art, the type of the magnetorheological damper is generally a gas compensation type, wherein a working cavity filled with magnetorheological fluid and a gas compensation chamber filled with gas are respectively arranged on two sides of a lower piston. When the piston rod reciprocates in the working cavity, the coil can be driven to move in the working cavity, so that the magnetorheological fluid in the working cavity generates damping force due to flowing, and the vibration reduction effect can be realized.

When the piston and the piston rod move upwards, liquid in the upper cavity of the piston flows into the lower cavity through the through hole, the upper cavity occupies liquid space due to the piston rod, so that the liquid flowing into the lower cavity is not enough to fill the lower cavity, and the air bag is expanded under the action of gas pressure to compensate the cavity with insufficient lower cavity. When the piston rod moves downwards, liquid in the lower cavity flows into the upper cavity, but the space of the upper cavity is occupied by the piston rod, so that the liquid volume of the lower cavity is large, the liquid compresses the air bag, and the air bag volume is reduced. In order to effectively compensate the gas space, the magnetorheological shock absorber generally needs a compensation air bag with higher pressure, the higher pressure causes the liquid of the shock absorber to form larger extrusion on the upper sealing body, and when the shock absorber is subjected to lateral force, the friction is higher, and the performance is influenced.

Disclosure of Invention

In view of this, the embodiment of the application provides a magnetorheological damper structure and a vehicle, which can resist a large lateral force and have a good damping effect.

In one aspect, the present application provides a magnetorheological damper structure comprising a piston rod, a damper cylinder, an iron core coil, a first seal and a second seal;

the shock absorber cylinder comprises a cylinder body, a top cover and a bottom cover, the top cover is fixed at the first end of the cylinder body, the bottom cover is fixed at the second end of the cylinder body, and the top cover is provided with a first through hole;

the outer wall of the first sealing element abuts against the inner wall of the barrel body, and the upper surface of the first sealing element abuts against the lower surface of the top cover;

the second sealing element is positioned between the first sealing element and the bottom cover, and the outer wall of the second sealing element is abutted against the inner wall of the barrel body;

a magnetorheological fluid storage chamber is formed between the first sealing piece and the second sealing piece, and a cavity is formed between the second sealing piece and the bottom cover;

the iron core coil is fixed on the outer wall of the piston rod and is positioned between the first sealing element and the second sealing element;

the first sealing element is provided with a second through hole, and the second sealing element is provided with a third through hole;

the first end of the piston rod is suitable for being connected with a vehicle body; the piston rod sequentially penetrates through the first through hole, the second through hole and the third through hole.

Optionally, the cylinder body sequentially comprises a first sub-cylinder body and a second sub-cylinder body from top to bottom;

the lower end of the first sub-cylinder body is connected with the upper end of the second sub-cylinder body through an annular plate;

the lower end of the first sub-cylinder body and the outer edge of the annular plate are fixed together, and the upper end of the second sub-cylinder body and the inner edge of the annular plate are fixed together; the diameter of the second sub cylinder body is larger than that of the piston rod, and the diameter of the second sub cylinder body is smaller than that of the first sub cylinder body.

Optionally, the structure further comprises an acceleration sensor for measuring an acceleration value of the vehicle body.

Optionally, the structure further comprises a first displacement sensor for measuring the kinematic displacement of the vehicle body.

Optionally, the structure further comprises a second displacement sensor for measuring a displacement amount of the wheel runout.

Optionally, the structure further comprises a first lubricant in the shape of a circular tube;

the outer wall of the first lubricating piece is abutted against the hole wall of the second through hole and fixed together; the inner wall of the first lubricating piece clings to the outer wall of the piston rod.

Optionally, the structure further comprises a second lubricant in the shape of a circular tube;

the outer wall of the second lubricating piece is abutted against the hole wall of the third through hole and fixed together; the inner wall of the second lubricating piece is tightly attached to the outer wall of the piston rod.

Optionally, the structure further comprises a body attachment;

the first end of the piston rod is fixed on the vehicle body connecting piece.

Optionally, the core coil comprises a core and a wire;

the iron core is fixed on the outer wall of the piston rod;

a fourth through hole is formed in the axial direction of the piston rod, and a fifth through hole is formed in the radial direction of the piston rod;

a sixth through hole is formed in the axial direction of the vehicle body connecting piece, wherein the sixth through hole and the fourth through hole are coaxial;

the first end of the wire is located on the outer side of the vehicle body connecting piece, the wire sequentially penetrates through the sixth through hole, the fourth through hole and the fifth through hole, and a coil is formed on the outer wall of the iron core.

In another aspect, embodiments of the present application provide a vehicle including a magnetorheological damper structure according to any one of the above.

The technical scheme provided by the embodiment of the application has the following beneficial effects:

in the running process of a vehicle, the piston rod moves upwards or downwards under the driving of the vehicle body, and meanwhile, the iron core coil can also move synchronously along with the piston rod, so that the magnetorheological fluid in the magnetorheological fluid storage chamber generates damping force in the flowing process, and the vibration generated by the vehicle body is attenuated. Because the first sealing element and the second sealing element are fixed, the volume of the magnetorheological fluid storage chamber and the volume of the cavity cannot be changed in the moving process of the piston rod, and therefore gas compensation in the air bag is not needed. Because the first sealing element and the second sealing element are not strongly extruded by gas or liquid without gas compensation operation, the friction force between the piston rod and the first sealing element and the friction force between the piston rod and the second sealing element are small, and the magnetorheological damper structure can resist large lateral force even when a vehicle turns or the like, has a good damping effect and is higher in safety of the vehicle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view, partially in section, of a magnetorheological damper structure provided in an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of an overall structure of a magnetorheological damper according to an embodiment of the present application.

In the drawings, the respective reference numerals are:

1-a piston rod;

2-a damper cylinder: 201-barrel, 2011-first sub-barrel, 2012-second sub-barrel, 202-top cover, 203-bottom cover, 204-annular plate;

3-iron core coil: 301-a conductive line;

4-a first seal;

5-a second seal;

6-magnetorheological fluid storage chamber;

7-a cavity;

8-a first lubricant;

9-a second lubricant;

10-a body attachment;

11-an acceleration sensor;

12-a first displacement sensor;

13-a second displacement sensor;

14-a body damper mount;

15-iron core coil connectors;

16-a first wire connector;

17-a second wire connector;

18-a third wire connector;

19-knuckle connection;

20-a knuckle;

21-a first bolt;

22-second bolt.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Before the embodiments of the present application are described in further detail, the orientation terms referred to in the embodiments of the present application, with reference to the orientation shown in the drawings, are only used for clearly describing the structure of the magnetorheological damper of the embodiments of the present application, and do not have the meaning of limiting the scope of the present application.

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the present application provides a magnetorheological damper structure, which includes a piston rod 1, a damper cylinder 2, an iron core coil 3, a first sealing member 4 and a second sealing member 5.

The shock absorber tube 2 comprises a tube body 201, a top cover 202 and a bottom cover 203, wherein the top cover 202 is fixed at the first end of the tube body 201, the bottom cover 203 is fixed at the second end of the tube body 201, and a first through hole is formed in the top cover 202.

The outer wall of the first seal member 4 abuts against the inner wall of the barrel 201, and the upper surface of the first seal member 4 abuts against the lower surface of the top cover 202. The second sealing member 5 is located between the first sealing member 4 and the bottom cover 203, and the outer wall of the second sealing member 5 is abutted against the inner wall of the barrel 201.

A magnetorheological fluid storage chamber 6 is formed between the first seal 4 and the second seal 5, and a cavity 7 is formed between the second seal 5 and the bottom cover 203.

The iron core coil 3 is fixed on the outer wall of the piston rod 1, and the iron core coil 3 is positioned between the first sealing element 4 and the second sealing element 5.

The first sealing element 4 is provided with a second through hole, and the second sealing element 5 is provided with a third through hole; the first end of the piston rod 1 is suitable for being connected with a vehicle body; the piston rod 1 sequentially passes through the first through hole, the second through hole and the third through hole.

It can be understood that the magnetorheological fluid storage chamber 6 is filled with magnetorheological fluid, and the cavity 7 is used for providing a movement space and a stroke for the piston rod 1.

In the running process of a vehicle, the piston rod 1 moves upwards or downwards under the driving of the vehicle body, and meanwhile, the iron core coil 3 also moves synchronously along with the piston rod 1, so that the magnetorheological fluid in the magnetorheological fluid storage chamber 6 generates damping force in the flowing process, and the vibration generated by the vehicle body is attenuated. Because the first seal 4 and the second seal 5 are fixed, the volume of the magnetorheological fluid storage chamber 6 and the volume of the cavity 7 are not changed during the movement of the piston rod 1, so that a gas compensation operation, namely, a gas filling operation into the cavity 7 is not needed. Because the first sealing element 4 and the second sealing element 5 are not strongly pressed by gas or liquid without gas compensation operation, the friction force between the piston rod 1 and the first sealing element 4 and the second sealing element 5 is small, and the magnetorheological damper structure can resist large lateral force even in the condition that a vehicle turns or the like, has good damping effect and higher safety of the vehicle.

The components and functions of the magnetorheological damper structure provided in the present embodiment will be described in more detail with reference to fig. 1 and 2.

In some embodiments of the present application, the barrel 201 includes, from top to bottom, a first sub-barrel 2011 and a second sub-barrel 2012.

As shown in fig. 1 and 2, the lower end of the first sub-barrel 2011 and the upper end of the second sub-barrel 2012 are connected together by the annular plate 204; the lower end of the first sub-barrel 2011 is fixed with the outer edge of the annular plate 204, and the upper end of the second sub-barrel 2012 is fixed with the inner edge of the annular plate 204; the diameter of the second sub-barrel 2012 is larger than the diameter of the piston rod 1, and the diameter of the second sub-barrel 2012 is smaller than the diameter of the first sub-barrel 2011.

It should be noted that, since the second sub-barrel 2012 is only used for providing a space and a stroke for the upward or downward movement of the piston rod 1, the diameter of the second sub-barrel 2012 can be smaller as long as the second sub-barrel 2012 can accommodate the piston rod 1; meanwhile, other structures are required to be installed around the magnetorheological damper structure, and a larger installation space can be provided for the installation of other structures due to the smaller diameter of the second sub-barrel 2012; further, since the diameter of the second sub-barrel 2012 is small, the manufacturing cost of the damper barrel 2 can also be reduced.

As shown in fig. 1 and 2, the first seal 4 and the second seal 5 are mounted on the inner wall of the first sub-barrel 2011. In some embodiments of the present application, the material of the first sealing member 4 and the material of the second sealing member 5 are both rubber. Meanwhile, the diameter of the first seal 4 and the diameter of the second seal 5 are both larger than the diameter of the first sub-barrel 2011.

In the assembly of the first seal 4 and the second seal 5, the first seal 4 and the second seal 5 are respectively pressed into the damper cylinder 2, so that the positions of the first seal 4 and the second seal 5 can be kept fixed and do not move.

As shown in fig. 1, in some embodiments of the present application, the structure further comprises a first lubricant 8, the first lubricant 8 having a circular tube shape; the outer wall of the first lubricating piece 8 is abutted against the hole wall of the second through hole and fixed together; the inner wall of the first lubricant 8 abuts against the outer wall of the piston rod 1.

In some embodiments of the present application, the height of the first lubricant 8 may be greater than, equal to, or less than the height of the first seal 4; preferably, the height of the first lubricant 8 is equal to the height of the first seal 4.

In some embodiments of the present application, the first lubricant 8 may be a copper ring.

It can be understood that when the piston rod 1 moves upwards or downwards, because the first lubricating piece 8 is arranged, the friction force generated by the outer wall of the piston rod 1 and the inner wall of the first lubricating piece 8 is small, and even in the case that the vehicle turns or the like, the output of the damping force of the magnetorheological damper is only slightly influenced, so that the magnetorheological damper can resist large lateral force, and the damping effect is good. At the same time, the first lubricant 8 may also function as a seal.

As shown in fig. 1, in some embodiments of the present application, the structure further comprises a second lubricant 9, the second lubricant 9 having a circular tube shape; the outer wall of the second lubricating piece 9 is abutted against the hole wall of the third through hole and fixed together; the inner wall of the second lubricant 9 abuts against the outer wall of the piston rod 1.

In some embodiments of the present application, the height of the second lubricant 9 may be greater than, equal to, or less than the height of the second seal 5; preferably the height of the second lubricant 9 is equal to the height of the second seal 5.

In some embodiments of the present application, the second lubricant 9 may be a copper ring.

It can be understood that, when the piston rod 1 moves upwards or downwards, because the second lubricating piece 9 is arranged, the friction force generated by the outer wall of the piston rod 1 and the inner wall of the second lubricating piece 9 is small, and even in the case of turning of the vehicle and the like, the output of the damping force of the magnetorheological damper is only slightly influenced, so that the magnetorheological damper can resist large lateral force, and the damping effect is good. At the same time, the second lubricating member 9 can also function as a seal.

As shown in FIG. 1, in some embodiments of the present application, the structure further includes a body attachment member 10; the first end of the piston rod 1 is fixed to the body attachment 10.

As shown in FIG. 2, in some embodiments of the present application, the top of the body attachment member 10 is adapted to be coupled to a body damper seat 14.

In some embodiments of the present application, the body damper seat 14 and the body attachment 10 are secured together by a bolt assembly, which may include a first bolt 21 and a second bolt 22, as shown in FIG. 2.

It is understood that the number of bolts in the bolt assembly is set according to actual requirements, as long as the body damper seat 14 and the body attachment 10 can be fixed together.

As shown in fig. 1, in some embodiments of the present application, the core coil 3 includes a core and a wire 301; the iron core is fixed on the outer wall of the piston rod 1; a fourth through hole is formed in the axial direction of the piston rod 1, and a fifth through hole is formed in the radial direction of the piston rod 1; a sixth through hole is axially formed in the vehicle body connecting piece 10, wherein the sixth through hole and the fourth through hole are coaxial; the first end of the wire 301 is located outside the vehicle body attachment 10, and the wire 301 passes through the sixth through hole, the fourth through hole, and the fifth through hole in this order, and forms a coil on the outer wall of the core.

It will be appreciated that once the core coil 3 is energised, a current will flow through the coil and a magnetic field will be generated. In the running process of a vehicle, the piston rod 1 moves upwards or downwards under the driving of the vehicle body, and meanwhile, the iron core coil 3 also moves synchronously along with the piston rod 1, so that the magnetorheological fluid in the magnetorheological fluid storage chamber 6 generates damping force in the flowing process, and the vibration generated by the vehicle body is attenuated.

As shown in fig. 1, in some embodiments of the present application, the structure further includes an acceleration sensor 11, and the acceleration sensor 11 is used to measure an acceleration value of the vehicle body.

Since the acceleration sensor 11 is used to measure the acceleration value of the vehicle body, it is sufficient to ensure that the acceleration sensor 11 can move in synchronization with the piston rod 1 or the vehicle body attachment 10 connected to the piston rod 1.

In some embodiments of the present application, the acceleration sensor 11 may be mounted on the body attachment 10, may also be mounted on the piston rod 1, and may also be mounted inside the iron core coil 3.

As shown in fig. 1, in some embodiments of the present application, the structure further includes a first displacement sensor 12, the first displacement sensor 12 being for measuring a kinematic displacement of the vehicle body.

It will be appreciated that since the first displacement sensor 12 is for measuring the movement displacement of the vehicle body, it is sufficient to ensure that the first displacement sensor 12 can move synchronously with the piston rod 1, or the vehicle body attachment 10 connected to the piston rod 1, or the vehicle body.

In some embodiments of the present application, the first displacement sensor 12 may be mounted on the body attachment 10, on the piston rod 1, inside the core coil 3, or on a corresponding structure on the vehicle body side.

As shown in fig. 1, in some embodiments of the present application, the structure further includes a second displacement sensor 13, and the second displacement sensor 13 is used for measuring the displacement amount of wheel runout.

In some embodiments of the present application, the second displacement sensor 13 may be installed at any position on the outer wall of the damper cylinder 2 as long as the installation of other surrounding structures is not affected; but can also be mounted on the inner wall of the damper cylinder 2 corresponding to the cavity 7, as long as the movement of the piston rod 1 is not affected.

The number of displacement sensors and the number of acceleration sensors are set according to actual requirements.

In some embodiments of the subject application, the body damper seat 14 has a guide hole therein, and the first ends of the wires 301 of the core coil 3 extend through the guide hole and are connected together at the core coil connector 15.

As shown in fig. 2, in some embodiments of the present application, a first wire connector 16 is connected to the acceleration sensor 11, a second wire connector 17 is connected to the first displacement sensor 12, and a third wire connector 18 is connected to the second displacement sensor 13.

The first wire connector 16, the second wire connector 17, and the third wire connector 18 are connected to corresponding connectors on the entire vehicle.

It can be understood that, because the measurement components are integrated on the structure of the magnetorheological damper provided in the embodiment of the application, that is, the acceleration sensor 11, the first displacement sensor 12 and the second displacement sensor 13 are integrated in the structure of the magnetorheological damper at the same time, the acceleration sensor or the displacement sensor does not need to be installed at other positions on the chassis of the vehicle, and the space is saved. Meanwhile, after the plurality of connectors on the magnetorheological damper structure and the connectors corresponding to one another on the whole vehicle are disassembled, the vehicle chassis can be overhauled or disassembled without disassembling each sensor independently, so that each sensor is prevented from being damaged.

In some embodiments of the present application, the MR damper structure is coupled to a knuckle 20 by a knuckle coupler 19, as shown in FIG. 2.

It is understood that the specific position of the knuckle connection member 19 may be set according to different vehicle models, and as shown in fig. 2, the knuckle connection member 19 may be installed on an outer wall of the second end of the first sub-barrel 2011.

In conclusion, in the running process of the vehicle, the piston rod 1 moves upwards or downwards under the driving of the vehicle body, and meanwhile, the iron core coil 3 also moves synchronously along with the piston rod 1, so that the magnetorheological fluid in the magnetorheological fluid storage chamber 6 generates damping force in the flowing process, and the vibration generated by the vehicle body is attenuated. Because the first seal 4 and the second seal 5 are fixed, the volume of the magnetorheological fluid storage chamber 6 and the volume of the cavity 7 are not changed during the movement of the piston rod 1, so that a gas compensation operation, namely, a gas filling operation into the cavity 7 is not needed. Because the first sealing element 4 and the second sealing element 5 are not strongly pressed by gas or liquid without gas compensation operation, the friction force between the piston rod 1 and the first sealing element 4 and the second sealing element 5 is small, and the magnetorheological damper structure can resist large lateral force even in the condition that a vehicle turns or the like, has good damping effect and higher safety of the vehicle.

In addition, because the acceleration sensor and the displacement sensor are integrated on the magnetorheological damper structure provided by the embodiment of the application, when the vehicle chassis is overhauled or disassembled, the operation can be carried out only by disassembling a plurality of connectors on the magnetorheological damper structure and connectors corresponding to one on the whole vehicle, the operation is simple, and each sensor can be prevented from being damaged.

Embodiments of the present application further provide a vehicle including a magnetorheological damper structure according to any one of the above.

Referring to fig. 1 and 2, the magnetorheological damper structure includes a piston rod 1, a damper cylinder 2, an iron core coil 3, a first seal 4 and a second seal 5.

The outer wall of the first sealing element 4 is abutted against the inner wall of the barrel body 201, and the upper surface of the first sealing element 4 is abutted against the lower surface of the top cover 202; the second sealing member 5 is located between the first sealing member 4 and the bottom cover 203, and the outer wall of the second sealing member 5 is abutted against the inner wall of the barrel 201.

In conclusion, in the running process of the vehicle, the piston rod 1 moves upwards or downwards under the driving of the vehicle body, and meanwhile, the iron core coil 3 also moves synchronously along with the piston rod 1, so that the magnetorheological fluid in the magnetorheological fluid storage chamber 6 generates damping force in the flowing process, and the vibration generated by the vehicle body is attenuated. Because the first seal 4 and the second seal 5 are fixed, the volume of the magnetorheological fluid storage chamber 6 and the volume of the cavity 7 are not changed during the movement of the piston rod 1, so that a gas compensation operation, namely, a gas filling operation into the cavity 7 is not needed. Because the first sealing element 4 and the second sealing element 5 are not strongly pressed by gas or liquid without gas compensation operation, the friction force between the piston rod 1 and the first sealing element 4 and the second sealing element 5 is small, and the magnetorheological damper structure can resist large lateral force even in the condition that a vehicle turns or the like, has better damping effect and higher safety of the vehicle.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A magneto-rheological shock absorber structure is characterized by comprising a piston rod (1), a shock absorber cylinder (2), an iron core coil (3), a first sealing element (4) and a second sealing element (5);

the shock absorber tube (2) comprises a tube body (201), a top cover (202) and a bottom cover (203), the top cover (202) is fixed at the first end of the tube body (201), the bottom cover (203) is fixed at the second end of the tube body (201), and a first through hole is formed in the top cover (202);

the outer wall of the first sealing element (4) is abutted against the inner wall of the barrel body (201), and the upper surface of the first sealing element (4) is abutted against the lower surface of the top cover (202);

the second sealing member (5) is positioned between the first sealing member (4) and the bottom cover (203), and the outer wall of the second sealing member (5) is abutted against the inner wall of the barrel body (201);

a magnetorheological fluid storage chamber (6) is formed between the first seal (4) and the second seal (5), and a cavity (7) is formed between the second seal (5) and the bottom cover (203);

the iron core coil (3) is fixed on the outer wall of the piston rod (1), and the iron core coil (3) is located between the first sealing element (4) and the second sealing element (5);

the first sealing element (4) is provided with a second through hole, and the second sealing element (5) is provided with a third through hole;

the first end of the piston rod (1) is suitable for being connected with a vehicle body; the piston rod (1) sequentially penetrates through the first through hole, the second through hole and the third through hole.

2. The structure of claim 1, wherein the cylinder (201) comprises a first sub-cylinder (2011) and a second sub-cylinder (2012) from top to bottom;

the lower end of the first sub-barrel body (2011) and the upper end of the second sub-barrel body (2012) are connected together through an annular plate (204);

wherein the lower end of the first sub-cylinder body (2011) and the outer edge of the annular plate (204) are fixed together, and the upper end of the second sub-cylinder body (2012) and the inner edge of the annular plate (204) are fixed together; the diameter of the second sub-barrel body (2012) is larger than that of the piston rod (1), and the diameter of the second sub-barrel body (2012) is smaller than that of the first sub-barrel body (2011).

3. The magnetorheological damper structure according to claim 1, further comprising an acceleration sensor (11), wherein the acceleration sensor (11) is used for measuring an acceleration value of a vehicle body.

4. The magnetorheological damper structure of claim 1, further comprising a first displacement sensor (12), the first displacement sensor (12) for measuring a kinematic displacement of the vehicle body.

5. The magnetorheological damper structure according to claim 1, further comprising a second displacement sensor (13), the second displacement sensor (13) being for measuring an amount of displacement of wheel hop.

6. The magnetorheological damper structure according to claim 1, further comprising a first lubricant (8), the first lubricant (8) having a circular tube shape;

the outer wall of the first lubricating piece (8) is abutted against the hole wall of the second through hole and fixed together; the inner wall of the first lubricating piece (8) is tightly attached to the outer wall of the piston rod (1).

7. The magnetorheological damper structure according to claim 1, further comprising a second lubricant (9), the second lubricant (9) having a circular tube shape;

the outer wall of the second lubricating piece (9) is abutted against the hole wall of the third through hole and fixed together; the inner wall of the second lubricating piece (9) is tightly attached to the outer wall of the piston rod (1).

8. The magnetorheological damper structure according to claim 1, further comprising a body attachment (10);

the first end of the piston rod (1) is fixed on the vehicle body connecting piece (10).

9. The magnetorheological damper structure according to claim 8, wherein the core coil (3) comprises a core and a wire (301);

the iron core is fixed on the outer wall of the piston rod (1);

a fourth through hole is formed in the axial direction of the piston rod (1), and a fifth through hole is formed in the radial direction of the piston rod (1);

a sixth through hole is formed in the axial direction of the vehicle body connecting piece (10), wherein the sixth through hole and the fourth through hole are coaxial;

the first end of wire (301) is located the outside of automobile body connecting piece (10), wire (301) passes in proper order sixth through-hole fourth through-hole with the fifth through-hole, and form the coil on the outer wall of iron core.

10. A vehicle comprising the magnetorheological damper structure according to any one of claims 1 to 9.