| 摘要 |
A disc brake device for motor-cycles and the like, constructed with a fixing bracket of inverted U-shape, having a flat horizontal roof plate and downwardly extending side plates, a pair of caliper arms joined together by a connecting rod and slidably mounted thereon in the space provided between the side plates, a fixed friction brake pad held in one of the caliper arms, a movable friction brake pad slidably inserted in a bore formed in the other caliper arm so as to be clamped with a brake disc of a wheel of the vehicle, interposed between the friction brake pads by a brake actuating lever through a screwing action between a male threaded nut member and a female threaded screw member embedded in the caliper arm that accommodates the movable friction pad, and an adjustment bolt provided concentrically with the screw and nut members to compensate wear occurring in the movable friction pad, the brake actuating lever being fitted to a square shaft provided at the end of the screw member, and tightly fastened thereto by a lock nut.
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