| 摘要 |
A brake abrasion detection device in a drum-type brake is disclosed. The device includes; a cylindrical housing made of insulating material having a hole at one end, and a female thread portion at the other end; a cap member where a male thread portion is formed at its circumference for connecting with the female thread portion and where a hole is formed at its center, a detector formed at the center portion of a flange held in the housing and contacting the recess formed in a brake lining through the hole of the housing; a spring made of a conductive material held by the housing and for applying pressure to the flange of the detector toward the brake lining; a connector installed opposite with respect to the flange of the detector and having a shaft externally extending from a flange for supporting the spring through the hole of the cap member; and a bracket for installing the housing a brake shoe, wherein a cable connected with an indication lamp is connected with the shaft, and depth of the recess formed at the brake lining is congruous with a braking efficiency limit line.
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