| 摘要 |
An automatic clearance adjusting device 10 that automatically adjusts the position of brake shoes 3 and 4 based on the wear includes an adjuster gear 23 that is rotatably depending on the amount of how much the brake shoes are parted from each other, a cam plate 25 rotated integrally with the adjuster gear 23 to drive the strut 27 that restricts the position of the brake shoes 3 and 4, and an adjuster restricting lever 33 that restricts the rotation of the adjuster gear 23 based on the pressing force from the wheel cylinder 6 that parts between the pair of brake shoes 3 and 4.
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