Patent ID: 9605720
Date: 2017-03-28
CPC Classifications: F16D

Claim:
1. A friction brake device comprising: a brake rotor that rotates around an axis of rotation; a rotary friction member that is rotatable around an axis of autorotation parallel to the axis of rotation; a support member that supports the rotary friction member rotatably around the axis of autorotation; and a pressing device that presses the rotary friction member against the brake rotor, wherein the rotary friction member revolves around the axis of rotation relatively to the brake rotor while being frictionally engaged with a lateral face of the brake rotor, when the pressing device presses the rotary friction member against the brake rotor, the support member is configured to press the rotary friction member in a direction perpendicular to the axis of rotation, and frictionally engage an outer periphery of a circular plate portion of the rotary friction member with a cylindrical face of the brake rotor, when the rotary friction member revolves, and the rotary friction member is caused to auto-rotate around the axis of autorotation by a first frictional force between the rotary friction member and the lateral face of the brake rotor when the pressing device begins to press the rotary friction member, but the rotary friction member comes to rest when a first pressing force by the pressing device increases.