| 摘要 |
<p>A bicycle brake, including a brake drum (1), a drum cap (2), plural brake bands (3) and a stopping structure (4,5,6) mounted in the brake drum and the drum cap provides two stages of braking. The stopping structure has a separator (4) interactive means, plural springs (6) and plural stopping means (5) able to be pushed upward and outward by the springs. In case the stopping structure is rotated to alter its angle, the stopping means are moved upward and outward by the springs to move the stopping means outward and to push the brake bands against the inner wall of the brake drum performing a first stage of braking. In case the movement of the stopping structure continues the springs are compressed and the stopping means also move down to the stop plates to perform a second stage of strong braking. <IMAGE></p> |
