A forced-cooled magnetorheological damper

Abstract

This utility model relates to a forced-cooling magnetorheological vibration damper, comprising: an inner cylinder assembly; an outer cylinder assembly, wherein an annular cavity is formed between the outer cylinder assembly and the inner cylinder assembly; the lower ends of both the outer cylinder assembly and the inner cylinder assembly are coaxially fixed to a base; a piston assembly disposed within the annular cavity; an intermediate cylinder, one end of which is fixedly connected to the piston assembly, and the other end passes through and extends beyond the upper end of the inner cylinder assembly, and also passes through and extends beyond the upper end of the outer cylinder assembly to connect with an external end device; and a cooling assembly disposed inside the inner cylinder assembly. The forced-cooling magnetorheological vibration damper provided by this utility model, by installing a cooling assembly within the inner cylinder assembly, can improve the heat dissipation capacity of the damper, thereby enabling the damper to meet the requirements of use under extreme operating conditions.

Description

Technical Field

[0001] This utility model relates to the field of magnetorheological device technology, specifically to a forced-cooling magnetorheological vibration damper. Background Technology

[0002] Magnetorheological fluids are smart materials that undergo significant rheological changes under magnetic field induction. They are suspensions of micron-sized soft magnetic particles (such as carbonyl iron powder and atomized iron powder) dispersed in a carrier liquid. Without an applied magnetic field, magnetorheological fluids exhibit good Newtonian fluid flow. Under an applied magnetic field, the magnetic particles in the fluid chain along the magnetic field lines, exhibiting a certain yield strength, thus enabling rapid adjustment of the damping force. Magnetorheological vibration dampers made using this property have been widely used in vehicles, civil engineering, robotics, and medical devices.

[0003] However, in practical applications, magnetorheological dampers, due to their wide range of damping force adjustment and strong ability to convert mechanical kinetic energy into heat dissipation, are prone to overheating under certain extreme driving conditions (such as extreme off-roading and rally racing). Furthermore, magnetorheological fluids require seals that are both oil-resistant and have excellent wear resistance, and the temperature range of the seals used is limited. Excessive temperature not only reduces the rheological properties of the magnetorheological fluid but may also cause seal failure, thus affecting the stability and lifespan of the damper. Therefore, relying solely on the heat dissipation capacity of the magnetorheological damper itself is insufficient to meet the demands of extreme operating conditions (such as rally racing and desert off-roading).

[0004] In view of this, a forced-cooling magnetorheological damper is proposed. By introducing an air-cooling or water-cooling device into the inner cylinder, the damper can still work reliably under extreme off-road conditions, thereby solving the problem of poor high-temperature resistance of dampers in the prior art. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a forced-cooling magnetorheological vibration damper.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A forced-cooled magnetorheological vibration damper, comprising: Inner cylinder block assembly; An outer cylinder assembly, forming an annular cavity between the outer cylinder assembly and the inner cylinder assembly; the lower ends of both the outer cylinder assembly and the inner cylinder assembly are coaxially fixed to the base; A piston assembly disposed within the annular cavity; An intermediate cylinder body, one end of which is fixedly connected to the piston assembly, and the other end of which passes through and extends out of the upper end of the inner cylinder body assembly, and passes through and extends out of the upper end of the outer cylinder body assembly and is connected to the outer end device. A cooling assembly is disposed inside the inner cylinder block assembly.

[0007] In some embodiments, the inner cylinder assembly includes an inner cylinder and an inner guide sealing ring, the inner guide sealing ring being sleeved on the upper end of the inner cylinder.

[0008] In some embodiments, the cooling assembly is an air-cooled device, which includes a fan and a fan mounting base. The fan is disposed at the upper end of the inner cylinder, and the fan mounting base is disposed at the upper end of the inner cylinder.

[0009] In some embodiments, the fan mounting base is fixedly installed with the fan, and the fan mounting base is pressed and fixed with the inner guide sealing ring of the inner cylinder assembly.

[0010] In some embodiments, the cooling assembly further includes a water cooling device. The water cooling device includes an inlet and an outlet water nozzle disposed at the lower end of the inner cylinder. An extension tube is disposed at the inner end of the outlet water nozzle mounting hole, and the outlet water nozzle communicates with the extension tube and is connected to an external cooling circulation pipeline. A fixing screw cap is disposed at the upper end of the inner cylinder, and a sealing device, which is a sealing ring, is provided between the fixing screw cap and the inner cylinder. A mechanical seal is formed between the fixing screw cap and the inner guide sealing ring.

[0011] In some embodiments, the intermediate cylinder is a tubular structure, and a plurality of connecting holes are provided at one end of the intermediate cylinder near the piston assembly, the connecting holes connecting the inner chamber and the outer chamber.

[0012] In some embodiments, the outer cylinder assembly includes an outer cylinder and an outer guide sealing ring. The outer wall of the outer guide sealing ring is provided with a static sealing ring, and the inner wall of the outer guide sealing ring is provided with a guide bushing, a dynamic sealing ring, or a dust seal.

[0013] As can be seen from the above embodiments, by installing a cooling component inside the inner cylinder assembly, the high temperature resistance of the shock absorber can be improved, thereby enabling the shock absorber to meet the temperature requirements under extreme operating conditions. Attached Figure Description

[0014] Figure 1 A schematic diagram of the forced cooling magnetorheological vibration damper provided by this utility model; Figure 2 Parts drawings of the forced air cooling solution provided by this utility model; Figure 3Parts drawing of the forced water cooling solution provided by this utility model; Figure 4 This is a part drawing of the intermediate cylinder and piston assembly provided by this utility model; Figure 5 This is a part drawing of the outer cylinder assembly provided by this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Outer cylinder assembly; 2. Intermediate cylinder; 3. Inner cylinder assembly; 4. Piston assembly; 5. Base; 6. Static seal ring; 7. Blower mounting bracket; 8. Dynamic seal ring; 9. Guide bushing; 10. Inner guide seal ring; 11. Inner cylinder; 12. Blower; 13. Fixing screw cap; 14. Water pipe; 15. Water inlet; 16. Water outlet; 17. Connecting hole; 18. Dust seal; 19. Outer guide seal ring; 20. Outer cylinder. Detailed Implementation

[0016] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0019] Reference Figure 1The forced-cooling magnetorheological vibration damper provided by this utility model includes an inner cylinder assembly 3; an outer cylinder assembly 1, which forms an annular cavity with the inner cylinder assembly 3; the lower ends of both the outer cylinder assembly 1 and the inner cylinder assembly 3 are coaxially fixed to a base 5; a piston assembly 4, which is disposed in the annular cavity; an intermediate cylinder 2, one end of which is fixedly connected to the piston assembly 4, and the other end passes through and extends out of the upper end of the inner cylinder assembly 3, and passes through and extends out of the upper end of the outer cylinder assembly 1 to connect with an outer end device; and a cooling assembly, which is disposed inside the inner cylinder assembly 3.

[0020] Specifically, the inner cylinder assembly 3 includes an inner cylinder 11 and an inner guide sealing ring 10, the inner guide sealing ring 10 being sleeved on the upper end of the inner cylinder 11.

[0021] Reference Figure 2 The cooling component is an air-cooled device, which includes a fan 12 and a fan mounting base 7. The fan 12 is disposed at the upper end of the inner cylinder 11, and the fan mounting base 7 is disposed at the upper end of the inner cylinder 11.

[0022] Specifically, the fan mounting base 7 is fixedly installed with the fan 12, and the fan mounting base 7 is pressed and fixed with the inner guide sealing ring 10 of the inner cylinder assembly 3.

[0023] In specific application scenarios, when the temperature of the vibration damper exceeds the set value, the fan 12 will start to perform forced cooling to ensure that the vibration damper operates within the normal temperature range and avoid damage to the vibration damper due to excessive temperature.

[0024] Reference Figure 3 The cooling assembly further includes a water-cooling device. The water-cooling device includes an inlet 15 and an outlet 16 located at the lower end of the inner cylinder. An extension tube 14 is provided at the inner end of the outlet 16's mounting hole, and the outlet 16 communicates with the extension tube 14 and is connected to an external cooling circulation pipeline. A fixing cap 13 is provided at the upper end of the inner cylinder 11, and a sealing device is provided between the fixing cap 13 and the inner cylinder 11. The sealing device can specifically be a sealing ring. The fixing cap 13 and the inner guide sealing ring 10 form a mechanical seal. Theoretically, the sealing device is not limited to a sealing ring; it can also be other structures capable of achieving a seal, such as sealant.

[0025] In specific application scenarios, when the temperature of the shock absorber exceeds the set value, the water cooling device will start to work and perform forced cooling to ensure that the shock absorber works within the normal temperature range, thereby greatly improving the high temperature resistance of the shock absorber and enabling it to meet the needs of extreme driving conditions.

[0026] The intermediate cylinder 2 is a tubular structure. The intermediate cylinder is provided with several connecting holes 17 at one end near the piston assembly 4. The connecting holes 17 connect the inner chamber and the outer chamber.

[0027] In specific applications, using a tubular structure in the intermediate cylinder can increase its stability, thereby improving the shock absorber's load-bearing capacity and resistance to lateral forces.

[0028] The aforementioned outer cylinder assembly includes an outer cylinder 20 and an outer guide sealing ring 19. The outer wall of the outer guide sealing ring 19 is provided with a static sealing ring 6, and the inner wall of the outer guide sealing ring 19 is provided with a guide bushing 9, a dynamic sealing ring 8, or a dust seal 18.

[0029] In specific application scenarios, the outer guide sealing ring 19 can achieve guidance and sealing with the intermediate cylinder 2.

[0030] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A forced-cooling magnetorheological vibration damper, characterized in that, include: Inner cylinder block assembly; An outer cylinder assembly, forming an annular cavity between the outer cylinder assembly and the inner cylinder assembly; the lower ends of both the outer cylinder assembly and the inner cylinder assembly are coaxially fixed to the base; A piston assembly disposed within the annular cavity; An intermediate cylinder body, one end of which is fixedly connected to the piston assembly, and the other end of which passes through and extends out of the upper end of the inner cylinder body assembly, and passes through and extends out of the upper end of the outer cylinder body assembly and is connected to the outer end device. A cooling assembly is disposed inside the inner cylinder block assembly.

2. The forced-cooling magnetorheological vibration damper according to claim 1, characterized in that, The inner cylinder assembly includes an inner cylinder and an inner guide sealing ring, the inner guide sealing ring being sleeved on the upper end of the inner cylinder.

3. The forced-cooling magnetorheological vibration damper according to claim 2, characterized in that, The cooling component is an air-cooled device, which includes a fan and a fan mounting base. The fan is located at the upper end of the inner cylinder, and the fan mounting base is located at the upper end of the inner cylinder.

4. The forced-cooling magnetorheological vibration damper according to claim 3, characterized in that, The fan mounting base is fixedly installed with the fan, and the fan mounting base is pressed and fixed with the inner guide sealing ring of the inner cylinder assembly.

5. The forced-cooling magnetorheological vibration damper according to claim 4, characterized in that, The cooling assembly further includes a water cooling device, which includes an inlet and an outlet nozzle located at the lower end of the inner cylinder. An extension tube is provided at the inner end of the outlet nozzle mounting hole, and the outlet nozzle is connected to the extension tube and to an external cooling circulation pipeline. A fixing screw cap is provided at the upper end of the inner cylinder, and a sealing device is provided between the fixing screw cap and the inner cylinder. A mechanical seal is provided between the fixing screw cap and the inner guide sealing ring.

6. The forced-cooling magnetorheological vibration damper according to claim 5, characterized in that, The sealing device is a sealing ring.

7. The forced-cooling magnetorheological vibration damper according to any one of claims 1-6, characterized in that, The intermediate cylinder is a tubular structure, and a number of connecting holes are provided at one end of the intermediate cylinder near the piston assembly. The connecting holes connect the inner chamber and the outer chamber.

8. The forced-cooling magnetorheological vibration damper according to any one of claims 1-6, characterized in that, The outer cylinder assembly includes an outer cylinder and an outer guide sealing ring. The outer wall of the outer guide sealing ring is provided with a static sealing ring, and the inner wall of the outer guide sealing ring is provided with a guide bushing, a dynamic sealing ring, or a dust seal.

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