| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve workability, reduce weight, and prevent excess adjusting of a shoe gap in the thermal expansion of a brake drum. SOLUTION: This automatic stroke adjusting device for a brake actuator is equipped with driving rings 240, 340, 440, 540, 546, 640 in which during the working of the brake actuator, in a state of exceeding the backlash of the bonding part of a reversible screw, clutch engagement is released for rotating, and in the release of the brake actuator, clutch engagement is kept, and the bonding part of an irreversible screw is relatively rotated by a degree equivalent to a value exceeding the backlash. The driving rings 240, 340, 440, 540, 546, 640 are integratedly formed by press working of a thin plate material.</p> |
