CN220416087U

CN220416087U - Magnetorheological fluid damper

Info

Publication number: CN220416087U
Application number: CN202320785851.6U
Authority: CN
Inventors: 陈礼; 戈亚龙; 何德管
Original assignee: Suzhou Henglu Auto Parts Co ltd
Current assignee: Suzhou Henglu Auto Parts Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2024-01-30
Anticipated expiration: 2033-04-11

Abstract

The utility model provides a magnetorheological fluid damper which comprises a shell, a first sleeve, a second sleeve, a rotating shaft and a coil, wherein a rotor is arranged on the rotating shaft and sleeved in the first sleeve, the first sleeve is sleeved in the second sleeve, and the second sleeve is sleeved in the coil; the outer circumferential surface of the rotor is provided with a plurality of strip-shaped grooves, the first sleeve is provided with at least one strip-shaped groove, and a gap is formed between the outer circumferential surface of the rotor and the inner side surface of the first sleeve; the plurality of strip-shaped grooves, the gaps and the strip-shaped grooves form a magnetorheological fluid flow cavity for containing magnetorheological fluid materials. The utility model has simple structure and small number of parts, thereby reducing the volume of the magnetorheological fluid damper as a whole, processing the parts and reducing the assembly cost.

Description

Magnetorheological fluid damper

Technical Field

The utility model relates to the technical field of automobile magnetorheological fluid dampers, in particular to a magnetorheological fluid damper.

Background

As automobiles enter an intelligent age, requirements on the integration level and the space structure of automobile parts are increasing. The road-sensing damping device of the driving simulator at the present stage adopts a scheme of combining a motor and a planet wheel, combining a motor and a worm gear or combining a motor and a synchronous pulley, the motor torque is controlled by a controller, and the motor torque is amplified by a reduction gearbox, so that the road-sensing damping of the steering wheel is obtained, and three problems exist in the scheme at present:

1. the damper occupies a large space in the axial or radial direction, but in the whole vehicle steering product arrangement, the layout space reserved for the damper is limited.

2. The damper system has a complex structure, and relates to a large number of parts, the parts are machined, and the assembly cost is high.

3. The system is complex to control and has high development and verification difficulty.

Disclosure of Invention

The utility model provides a magnetorheological fluid damper, which aims to solve the technical problems of large space occupied by the damper in the axial direction or the radial direction, large volume of the damper and high cost in the prior art.

The utility model provides a magnetorheological fluid damper, which comprises a shell, a first sleeve, a second sleeve, a rotating shaft and a coil,

the rotor is arranged on the rotating shaft, the rotor is sleeved in the first sleeve, the first sleeve is sleeved in the second sleeve, and the second sleeve is sleeved in the coil;

the outer circumferential surface of the rotor is provided with a plurality of strip-shaped grooves, the first sleeve is provided with at least one strip-shaped groove, and a gap is formed between the outer circumferential surface of the rotor and the inner side surface of the first sleeve;

and a magnetorheological fluid flow cavity for containing magnetorheological fluid materials is formed among the plurality of strip-shaped grooves, the gaps and the strip-shaped grooves.

In a preferred embodiment, the plurality of strip-shaped grooves formed in the outer circumferential surface of the rotor are uniformly distributed.

In a preferred embodiment, the first sleeve is provided with two bar-shaped grooves.

In a preferred embodiment, the magnetorheological fluid damper further comprises a first end cap and a second end cap; the first end cover and the second end cover are respectively arranged at two sides of the shell;

wherein, a PCBA board is arranged in the second end cover and is perpendicular to the rotating shaft, and an angle sensor chip is integrated on the PCBA board; and one end of the rotating shaft, which is opposite to the angle sensor chip, is provided with an angle sensor magnetic head.

In a preferred embodiment, the first end cap is mounted to one side of the housing by a first bolt and the second end cap is mounted to the other side of the housing by a second bolt.

In a preferred embodiment, the second sleeve and the coil are embedded within the first end cap and secured to the first end cap.

In a preferred embodiment, the PCBA board has an electronic control unit integrated thereon.

In a preferred embodiment, the angle sensor chip is an AMR type sensor.

In a preferred embodiment, bearings are mounted between the shaft and the first end cap, and between the shaft and the housing, and an oil seal is mounted outside the bearings.

Compared with the prior art, the utility model has the following beneficial effects:

according to the magnetorheological fluid damper provided by the utility model, the plurality of strip-shaped grooves are formed in the circumferential surface of the outer side of the rotor, the strip-shaped grooves are formed in the first sleeve, the magnetorheological fluid flow cavity is formed between the plurality of strip-shaped grooves of the rotating shaft and the strip-shaped grooves of the first sleeve, the structure is simple, the number of parts is small, the volume of the magnetorheological fluid damper is reduced as a whole, the parts are processed, and the assembly cost is low.

The magnetorheological fluid damper provided by the utility model has the advantages of quick response, low energy consumption, continuous and reversible damping and capability of being combined with an electronic control unit.

The magnetorheological fluid damper provided by the utility model reduces the volume of the road sense damping device, improves the feasibility of the damper in the steering arrangement of the whole vehicle, reduces the cost of the road sense damping device, reduces the control difficulty of the road sense damping, and reduces the difficulty of product processing and production control.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a magnetorheological fluid damper of the present utility model from one perspective.

FIG. 2 is a schematic diagram of a magnetorheological fluid damper in accordance with the present utility model from another perspective.

FIG. 3 is an exploded schematic view of a magnetorheological fluid damper in accordance with the present utility model.

FIG. 4 is a schematic cross-sectional view of a magnetorheological fluid damper in accordance with the present utility model.

Detailed Description

To further clarify the above and other features and advantages of the present utility model, a further description of the utility model will be rendered by reference to the appended drawings. It should be understood that the specific embodiments presented herein are for purposes of explanation to those skilled in the art and are intended to be illustrative only and not limiting.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

As shown in fig. 1, a schematic structure of a magnetorheological fluid damper according to the present utility model at one viewing angle, fig. 2, a schematic explosion diagram of a magnetorheological fluid damper according to the present utility model, fig. 3, a schematic cross-sectional view of a magnetorheological fluid damper according to the present utility model, fig. 4, and fig. 1 to 4 are combined, and according to an embodiment of the present utility model, a magnetorheological fluid damper is provided, which includes a housing 1, a first end cap 2, a second end cap 12, a first sleeve 8, a second sleeve 4, a rotating shaft 5, and a coil 3.

The rotor 6 is arranged on the rotating shaft 5, and the rotor 6 and the rotating shaft 5 are fixed to rotate together with the rotating shaft 5. The rotor 6 is sleeved in the first sleeve 8, the first sleeve 8 is arranged in the second sleeve 4, the first sleeve 8 is fixed with the second sleeve 4, and the second sleeve 4 is sleeved in the coil 3. The first end cap 2 and the second end cap 12 are mounted on both sides of the housing 1, respectively.

Specifically, the first end cap 2 is mounted on one side of the housing 1 by the first bolt 17, and the second end cap 12 is mounted on the other side of the housing 1 by the second bolt 18 by the second end cap 12. The second sleeve 4 and the coil 3 are embedded in the first end cover 2 and fixed with the first end cover 2.

According to the embodiment of the utility model, a plurality of strip-shaped grooves 7 are formed on the outer circumferential surface of the rotor 6, at least one strip-shaped groove 9 is formed on the first sleeve 8, and a gap 10 is formed between the outer circumferential surface of the rotor 6 and the inner side surface of the first sleeve 8. A plurality of grooves 7, gaps 10, and grooves 9 form a magnetorheological fluid flow chamber therebetween for containing a magnetorheological fluid material.

In one embodiment, the plurality of strip-shaped grooves 7 formed in the outer circumferential surface of the rotor 6 are uniformly distributed. In one embodiment, the first sleeve 8 is provided with two bar-shaped grooves 9.

In accordance with an embodiment of the present utility model, a PCBA board 13 is arranged within the second end cap 12 perpendicular to the rotational axis 5, and an angle sensor chip 14 is integrated on the PCBA board 13. The rotating shaft 5 is opposite to one end of the angle sensor chip 14, an angle sensor magnetic head 11 is arranged, the angle sensor magnetic head 11 is coaxial with the rotating shaft 5, and the other end of the rotating shaft 5 extends out of the first end cover 2. An Electronic Control Unit (ECU) is integrated on the PCBA board 13. In one embodiment, the angle sensor chip 14 is an AMR type sensor.

According to an embodiment of the present utility model, a bearing 15 is installed between the rotation shaft 5 and the first end cap 2, and between the rotation shaft 5 and the housing 1, and an oil seal 16 is installed outside the bearing 15.

According to the embodiment of the utility model, the magnetorheological fluid material is filled in the magnetorheological fluid flowing cavities among the plurality of strip-shaped grooves 7, the gaps 10 and the strip-shaped grooves 9, and when the current in the coil 3 is unchanged, the magnetorheological fluid material is liquid with good fluidity, so that the rotor 6 can be driven by the rotating shaft 5 to rotate relative to the first sleeve 8.

When damping torque needs to be applied to the rotating shaft 5, the current of the coil 3 is controlled to change through an Electronic Control Unit (ECU) integrated on the PCBA 13, so that the electromagnetic field generated by the coil 3 is changed, the viscosity of the magnetorheological fluid material in the magnetorheological fluid flow cavity between the plurality of strip-shaped grooves 7, the gaps 10 and the strip-shaped grooves 9 is increased under the action of the electromagnetic field, and the damping torque is applied to the rotor 6, so that the damping torque is applied to the rotating shaft 5.

The plurality of strip-shaped grooves 7 are formed in the circumferential surface of the outer side of the rotor 6, so that the transmission of the resistance moment of the magnetorheological fluid material to the rotor 6 is effectively improved, and the damping effect of the magnetorheological fluid damper is improved.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A magnetorheological fluid damper is characterized by comprising a shell, a first sleeve, a second sleeve, a rotating shaft and a coil,

2. The damper according to claim 1, wherein the plurality of grooves formed in the outer circumferential surface of the rotor are uniformly distributed.

3. The damper of claim 1, wherein the magnetorheological fluid damper further comprises a first end cap and a second end cap; the first end cover and the second end cover are respectively arranged at two sides of the shell.

4. A damper according to claim 3 wherein the first end cap is mounted to one side of the housing by a first bolt and the second end cap is mounted to the other side of the housing by a second bolt.

5. A damper according to claim 3 wherein the second sleeve and the coil are embedded within the first end cap and secured thereto.

6. A damper according to claim 3, wherein a PCBA board is arranged within the second end cap perpendicular to the rotational axis, on which PCBA board an angle sensor chip is integrated; and one end of the rotating shaft, which is opposite to the angle sensor chip, is provided with an angle sensor magnetic head.

7. The damper of claim 6, wherein the PCBA board has an integrated electronic control unit.

8. The damper of claim 6, wherein the angle sensor chip is an AMR type sensor.

9. The damper of claim 1, wherein the first sleeve defines two bar-shaped grooves.

10. A damper according to claim 3, wherein bearings are mounted between the shaft and the first end cap, and between the shaft and the housing, and an oil seal is mounted outside the bearings.