| 摘要 |
<p>A fastener applicator, for example for cable clips, uses the kinetic energy of a flywheel (6) rotated by a prime mover (4), preferably a battery drive electric motor, to drive a striker (8) for firing a fastener into a support. An actuator (7) which strikes the striker (8) may be a fixed projection on the flywheel (6) or be an element on the flywheel movable relative to the flywheel by centrifugal force to project the actuator from an inoperative position to an operative position for striking the striker. The driven from the prime mover (4) to the flywheel (6) is through a clutch or releasable drive coupling (26) which temporarily disconnects the drive when the actuator strikes the strike so that the kinetic energy at the flywheel alone drives the striker and the prime mover is protected from the impact. In a modification a micro-processor measures the rotational speed of the flywheel and stops the prime mover when a pre-determined speed for the necessary kinetic energy is achieved. <IMAGE></p> |
