| 摘要 |
A braking device capable of generating a larger braking force is provided. The present invention provides a braking device including a housing 10 having a peripheral wall 11, a coil holding unit 20 provided inside the housing 10, a coil 30 held by the coil holding unit 20, a first activation chamber 40 formed between an inner peripheral surface of the peripheral wall 11 of the housing 10 and an outer peripheral surface of the coil holding unit 20 arranged in parallel with the inner peripheral surface, a rotor 60 provided inside of the first activation chamber 40, and a magnetorheological fluid 80 filling an inside of the first activation chamber 40, wherein the inner peripheral surface of the peripheral wall 11 of the housing 10 is at a position farthest from the center of rotation of the rotor 60 in a radial direction in the inside of the housing 10, wherein the rotor 60 is in a cylindrical shape including an outer peripheral surface having a gap between the outer peripheral surface of the rotor 60 and the inner peripheral surface of the peripheral wall 11 of the housing 10 and an inner peripheral surface having a gap between the inner peripheral surface of the rotor 60 and the outer peripheral surface of the coil holding unit 20, and wherein a shearing stress of the magnetorheological fluid 80 acts on the inner peripheral surface and the outer peripheral surface of the rotor 60. |
