| 摘要 |
PURPOSE:To prevent a disk from being broken and prolong the useful life of the disk, by providing an annular reinforcing member at a central part of a rubber- made disk for transmitting a moving force of a movable body to an output member when operating a brake which part is provided on the side for making contact with the movable member. CONSTITUTION:A plate ring 3 and the rubber-made disk 39 are provided between a cylindrical part 45 fixed to the movable body 14 and the output member 41. At a part of the disk 39 faced to a gap between the cylindrical part 45 and the output member 42, a plate ring from reinforcing member 47 having an internal hole of a size approximately equal to the outside diameter of the member 42 is integrally provided. When the brake is operated, movement of the movable body 14 is transmitted to the disk 39 through the cylindrical part 45, and a traction force of an input member 21 is transmitted to the disk 39 through a plunger 22, a casing 27, a projection 41 and a plate ring 40. Therefore, the disk 39 is compressed, and an inside peripheral part of the disk 39 tends to be bitten into the gap by the output member 42, bht the seizing is prevented by the reinforcing member 47. |
