Hybrid rotary brake

Abstract

A composite rotary resistance device includes a first isolation disk, a second isolation disk, a rotating shaft, an even number of magnetic field components, an even number of permanent magnet components, two resistance discs, and two magnetorheological fluid layers. The second isolation disk is parallel to and spaced apart from the first isolation disk. The rotating shaft is rotatably disposed between the first and second isolation disks. The even number of magnetic field components are disposed between the first and second isolation disks. The even number of permanent magnet components are disposed between the first and second isolation disks, with each permanent magnet component adjacent to two of the even number of magnetic field components. The two resistance discs are sleeved on opposite ends of the rotating shaft and are respectively suspended above the first and second isolation disks. The two magnetorheological fluid layers are respectively disposed on the first and second isolation disks.

Claims

1. A composite rotary resistance device, comprising: First isolation tray; A second isolation disk is spaced parallel to the first isolation disk; A rotating shaft rotatably passes through the first and second isolation disks; an even number of magnetic field components are disposed between the first and second isolation disks; an even number of permanent magnet components are disposed between the first and second isolation disks, with each permanent magnet component adjacent to two of the magnetic field components; two resistance discs are sleeved on opposite ends of the rotating shaft and suspended above the first and second isolation disks; and two magnetorheological fluid layers are disposed on the first and second isolation disks, with each magnetorheological fluid layer contacting each resistance disc and each of the magnetic field components.

2. The composite rotary resistance as claimed in claim 1, wherein each of the magnetic field components has a magnetic post, a first magnetic pole, a second magnetic pole and a coil, the first magnetic pole and the second magnetic pole being disposed at both ends of the magnetic post, and the coil being wound on an outer ring surface of the magnetic post and located between the first magnetic pole and the second magnetic pole.

3. The composite rotary resistance device as claimed in claim 2, wherein the first isolation disk has an even number of first through holes, the second isolation disk has an even number of second through holes, the second through holes respectively corresponding to the first through holes, and the first magnetic pole and the second magnetic pole of each magnetic field component are respectively closely fitted to each of the first through holes and each of the second through holes.

4. The composite rotary resistance device as claimed in claim 2, wherein each of the permanent magnet components includes a rectangular magnet, the two ends of the permanent magnet component contact the first isolation disk and the second isolation disk respectively, and each of the permanent magnet components contacts the first magnetic pole and the second magnetic pole of the adjacent magnetic field component.

5. The composite rotary resistance device as claimed in claim 2, wherein each permanent magnet component includes a rectangular magnet, the two ends of the permanent magnet component are respectively in contact with the first isolation disk and the second isolation disk, and each permanent magnet component is spaced apart from the first magnetic pole and the second magnetic pole of the adjacent magnetic field component.

6. The composite rotary resistance as claimed in claim 2, wherein each of the permanent magnet components has a first magnet and a second magnet, the first magnet being in contact with the first isolation disk, the second magnet being in contact with the second isolation disk, and each of the first magnets being in contact with the first magnetic pole of an adjacent magnetic field component, and each of the second magnets being in contact with the second magnetic pole of an adjacent magnetic field component.

7. The composite rotary resistance as claimed in claim 6, wherein a first magnetic field direction of the first magnet is opposite to a second magnetic field direction of the second magnet.

8. The composite rotary resistance as claimed in claim 1, wherein the magnetic field propagation path of each of the magnetic field components is opposite to the magnetic field propagation path of adjacent magnetic field components.

9. The composite rotary resistance as claimed in claim 1, wherein the second isolation disk has a sleeve, the first isolation disk has a through hole, the sleeve and the through hole are interconnected along an axis, and the shaft is rotatably disposed through the through hole and the sleeve.

10. The composite rotary resistance device as claimed in claim 1 further includes a first outer cover and a second outer cover, respectively disposed outside the first isolation disk and the second isolation disk to form a first flow space and a second flow space, and the rotating shaft protrudes from the first outer cover.

11. The composite rotary resistance device as claimed in claim 10, wherein the two resistance discs are located in the first flow space and the second flow space, respectively, and the two magnetorheological fluid layers are filled in the first flow space and the second flow space, respectively.

12. The composite rotary resistance as claimed in claim 10, wherein the first outer cover and the second outer cover are made of magnetic material.

Images