Magnetorheological damper for vehicle

Abstract

The utility model relates to the technical field of magneto-rheological shock absorbers, in particular to a magneto-rheological shock absorber for a vehicle, which comprises a vehicle body connecting piece and a shock absorber cylinder, the shock absorber cylinder comprises a first cylinder body, a second cylinder body and a third cylinder body, a first sealing protruding part is clamped with the inner wall of the second cylinder body, and a second sealing protruding part is clamped with the inner wall of the third cylinder body. The two second sealing protruding parts are connected with the second barrel body and the third barrel body in a clamped mode respectively, and the first barrel body and the second barrel body are connected through a first installation assembly. Due to the fact that the first sealing protruding part is connected with the inner wall of the second cylinder body in the clamping mode, and the two second sealing protruding parts are connected with the second cylinder body and the third cylinder body in the clamping mode respectively, when a vehicle vibrates, the first sealing piece, the second sealing piece and the third sealing piece cannot move relative to the damper cylinder, and the magnetorheological damper is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of magnetorheological vibration damper technology, and in particular to a magnetorheological vibration damper for vehicles. Background Technology

[0002] Magnetorheological dampers utilize electromagnetic reactions to respond in real time to road conditions and the driving environment, based on input information from sensors monitoring the movement of the vehicle body and wheels. The magnetorheological fluid is a magnetic soft-particle suspension. When the fluid is injected into an electromagnetic coil within the damper piston, the coil's magnetic field alters its rheological properties, thereby generating a rapid and highly controllable damping force without the need for electromechanical control valves and with a simple mechanical device.

[0003] For example, the application publication number "CN113915278A" is titled "Magnetorheological Vibration Damper Structure and Vehicle". The piston rod moves upward or downward under the drive of the vehicle body. At the same time, the iron core coil also moves synchronously with the piston rod. This causes the magnetorheological fluid in the magnetorheological fluid storage chamber to generate damping force during the flow, thereby reducing the vibration generated by the vehicle body.

[0004] The above-mentioned and existing technologies have the following defects: the first and second seals of the magnetorheological vibration damper are prone to displacement with the damper cylinder, causing damage to the magnetorheological vibration damper; at the same time, the first lubricating element and the first seal, and the second lubricating element and the second seal will also have relative displacement, affecting the working efficiency of the magnetorheological vibration damper. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a magnetorheological damper for vehicles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A magnetorheological damper for vehicles is designed, including a body connector and a damper cylinder. The damper cylinder includes a first cylinder, a second cylinder, and a third cylinder. A piston rod, which is fixedly connected to the body connector, is slidably connected inside the damper cylinder. A first seal is provided on the upper inner wall of the first cylinder. A first sealing protrusion is provided on the upper surface of the first seal near the first cylinder, and the first sealing protrusion engages with the inner wall of the second cylinder. A first lubricant is provided on the inner wall of the first seal, which is slidably connected to the piston rod. A first lubricant is provided on the upper surface of the first lubricant, which engages with the first seal. The second cylinder has a sliding protrusion, a second sealing element is provided on the lower inner wall of the second cylinder, and a third sealing element is provided on the upper inner wall of the third cylinder. The second and third sealing elements are both provided with a second sealing protrusion on the side surface near the shock absorber cylinder. The two second sealing protrusions are respectively engaged with the second cylinder and the third cylinder. The surface of the second lubricating element is provided with a second lubricating protrusion that engages with the second and third sealing elements. The first cylinder and the second cylinder are connected by a first mounting assembly, and the second cylinder and the third cylinder are connected by a second mounting assembly with the same structure as the first mounting assembly.

[0008] Preferably, the first mounting assembly includes two flanges and a plurality of bolt assemblies. The two flanges are respectively disposed at opposite ends of the first cylinder and the second cylinder, and the two flanges are bolted together by the plurality of bolt assemblies.

[0009] Preferably, a sealing gasket is provided between two adjacent flange portions.

[0010] Preferably, the lower ends of the plurality of bolt assemblies are threaded with protective caps.

[0011] Preferably, the second seal has a first groove and a second protrusion on the side surface near the third seal, and the third seal has a first protrusion and a second groove on the side surface near the second seal. The first groove and the first protrusion match and engage with each other, and the second groove and the second protrusion match and engage with each other.

[0012] The magnetorheological vibration damper for vehicles proposed in this utility model has the following advantages: Because the first sealing protrusion engages with the inner wall of the second cylinder, and the two second sealing protrusions engage with the second and third cylinders respectively, when the vehicle vibrates, the first, second, and third seals will not shift relative to the damper cylinder, thus preventing damage to the magnetorheological vibration damper. Simultaneously, because the first lubrication protrusion engages with the first seal, there will be no relative displacement between the first lubricant and the first seal; and because the second lubrication protrusion engages with the second and third seals, there will be no relative displacement between the second lubricant and the second and third seals, ensuring that the working efficiency of the magnetorheological vibration damper is not affected. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0014] Figure 2 This is an enlarged view of position A in this utility model;

[0015] Figure 3 This is an enlarged view of position B of this utility model.

[0016] In the diagram: 1. Body connecting part; 2. Shock absorber cylinder; 3. First cylinder body; 4. Second cylinder body; 5. Third cylinder body; 6. Piston rod; 7. First seal; 8. First sealing protrusion; 9. First lubricating part; 10. Second seal; 11. Third seal; 12. Second sealing protrusion; 13. Second lubricating part; 14. Second lubricating protrusion; 15. Flange; 16. Bolt assembly; 17. Sealing gasket; 18. Protective cap; 19. First groove; 20. First protrusion; 21. Second groove; 22. Second protrusion; 23. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-3 A magnetorheological damper for vehicles includes a body connector 1 and a damper cylinder 2. The damper cylinder 2 includes a first cylinder 3, a second cylinder 4, and a third cylinder 5. A piston rod 6, which is fixedly connected to the body connector 1, is slidably connected inside the damper cylinder 2. A first seal 7 is provided on the upper inner wall of the first cylinder 3. A first sealing protrusion 8 is provided annularly on the upper surface of the first seal 7 near the first cylinder 3. The first sealing protrusion 8 engages with the inner wall of the second cylinder 4. A first lubricating element 9, which is slidably connected to the piston rod 6, is provided on the inner wall of the first seal 7. A first lubricating protrusion 10, which engages with the first seal 7, is provided annularly on the upper surface of the first lubricating element 9. The lower inner wall of the second cylinder 4 is provided with a second sealing element 11, and the upper inner wall of the third cylinder 5 is provided with a third sealing element 12. The second sealing element 11 and the third sealing element 12 are provided with a second sealing protrusion 13 on the side surface near the shock absorber cylinder 2. The two second sealing protrusions 13 are respectively engaged with the second cylinder 4 and the third cylinder 5. The surface of the second lubricating element 14 is provided with a second lubricating protrusion 15 that engages with the second sealing element 11 and the third sealing element 12. The first cylinder 3 and the second cylinder 4 are connected by a first mounting assembly, and the second cylinder 4 and the third cylinder 5 are connected by a second mounting assembly with the same structure as the first mounting assembly.

[0019] The first mounting assembly includes two flange portions 16 and multiple bolt assemblies 17. The two flange portions 16 are respectively located at opposite ends of the first cylinder 3 and the second cylinder 4, and the two flange portions 16 are bolted together by the multiple bolt assemblies 17.

[0020] A sealing gasket 18 is provided between two adjacent flange portions 16. The sealing gasket 18 serves to seal the area.

[0021] Each of the bolt assemblies 17 has a protective cap 19 threaded to its lower end. The protective cap 19 serves to protect the bolt assemblies 17.

[0022] The second seal 11 has a first groove 20 and a second protrusion 23 on its surface near the third seal 12. The third seal 12 has a first protrusion 21 and a second groove 22 on its surface near the second seal 11. The first groove 20 matches and engages with the first protrusion 21, and the second groove 22 matches and engages with the second protrusion 23. By engaging the first groove 20 with the first protrusion 21 and engaging the second groove 22 with the second protrusion 23, the connection between the second seal 11 and the third seal 12 is made more secure.

[0023] Because the first sealing protrusion 8 engages with the inner wall of the second cylinder 4, and the two second sealing protrusions 13 engage with the second cylinder 4 and the third cylinder 5 respectively, when the vehicle vibrates, the first seal 7, the second seal 11, and the third seal 12 will not displace with the damper cylinder 2, thus preventing damage to the magnetorheological damper. Simultaneously, because the first lubrication protrusion 10 engages with the first seal 7, the first lubricating element 9 will not displace relative to the first seal 7; and because the second lubrication protrusion 15 engages with the second seal 11 and the third seal 12, the second lubricating element 14 will not displace relative to the second seal 11 and the third seal 12, ensuring that the working efficiency of the magnetorheological damper is not affected. The working principle of this magnetorheological damper is the same as that of existing technology, and therefore will not be described in detail here.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetorheological damper for vehicles, comprising a body connector (1) and a damper cylinder (2), characterized in that, The shock absorber cylinder (2) includes a first cylinder (3), a second cylinder (4), and a third cylinder (5). A piston rod (6) that is fixedly connected to the vehicle body connector (1) is slidably connected inside the shock absorber cylinder (2). A first sealing element (7) is provided on the inner wall of the upper part of the first cylinder (3). A first sealing protrusion (8) is provided on the upper surface of the first sealing element (7) near the first cylinder (3). The first sealing protrusion (8) is engaged with the inner wall of the second cylinder (4). A first lubricating element (9) that is slidably connected to the piston rod (6) is provided on the inner wall of the first sealing element (7). A first lubricating element (9) that is slidably connected to the first sealing element (7) is provided on the upper surface of the first lubricating element (9). The first lubrication protrusion (10) is snapped in place. The second cylinder (4) has a second sealing element (11) on its lower inner wall and a third sealing element (12) on its upper inner wall. The second sealing element (11) and the third sealing element (12) are both provided with a second sealing protrusion (13) on the side surface of the second sealing element (11) and the third sealing element (12) near the shock absorber cylinder (2). The two second sealing protrusions (13) are snapped in place with the second cylinder (4) and the third cylinder (5) respectively. The first cylinder (3) and the second cylinder (4) are connected by a first mounting assembly. The second cylinder (4) and the third cylinder (5) are connected by a second mounting assembly with the same structure as the first mounting assembly.

2. The magnetorheological damper for vehicles according to claim 1, characterized in that, The first mounting assembly includes two flanges (16) and multiple bolt assemblies (17). The two flanges (16) are respectively located at opposite ends of the first cylinder (3) and the second cylinder (4), and the two flanges (16) are bolted together by the multiple bolt assemblies (17).

3. The magnetorheological damper for vehicles according to claim 2, characterized in that, A sealing gasket (18) is provided between two adjacent flange portions (16).

4. The magnetorheological vibration damper for vehicles according to claim 2, characterized in that, Each of the bolt assemblies (17) has a protective cap (19) threaded to its lower end.

5. The magnetorheological damper for vehicles according to claim 1, characterized in that, The second seal (11) has a first groove (20) and a second protrusion (23) on the side surface near the third seal (12). The third seal (12) has a first protrusion (21) and a second groove (22) on the side surface near the second seal (11). The first groove (20) matches and engages with the first protrusion (21), and the second groove (22) matches and engages with the second protrusion (23).

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