| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a spring-driven clamp driver having improved drive feeling by assuring a driving operation responding to an operation of a control switch such as a trigger switch and a push-switch without time lag. <P>SOLUTION: The spring-driven clamp driver is equipped with a controller 53 for controlling operation and stop of a motor 7, based on detection signals of the trigger switch 54, a push-switch 55 and an operation sensing switch 56 and also for reducing rotation speed of the motor 7 in operation. The controller 53 is structured to reduce the rotation speed of the motor 7 to a predetermined value or lower based on the detection signal of the operation sensing switch 56 when a plunger moves toward the bottom dead center and thereafter moves to a predetermined position in an initial state toward the top dead center by driving force of the motor 7, and also to stop the motor 7 which has decelerated. The plunger is stopped at a stop position in the initial state as close to the start-to-drive position toward the top dead center as possible, and more strong compressive force is applied to a drive spring. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
