| 摘要 |
PURPOSE:To enable the release of braking without providing a release mechanism, and to prevent the generation of abrasion of members and the impact noise at the time of releasing by forming a lock mechanism, which can release the braking condition and which can brake again on the way, of a ratchet plate and a claw member. CONSTITUTION:When the force is applied to the tip of a brake lever 20 once in the braking condition, a claw member 30 is turned by the energizing force of an energizing member 40, and the claw end 35 is removed from a gear part 26 of a ratchet plate 25, and release of the braking is enbled so as to return the brake lever 20. On the way of the releasing the braking, when the brake lever 20 is reversely turned for braking operation, a relay claw 36 is pushed by the gear part 26 of the ratchet plate 25, and the claw member 30 is displaced to the operating position. Then, the energizing member 40 energizes the claw member 30 to a position, in which the claw end 35 is engaged with the gear part 26, and a brake cable C is pulled for braking by turning the brake lever 20 in this condition, and even if the brake lever 20 is released at a desired position, the brake lever 20 is constrained at this position to maintain the braking condition. |
