| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem associated with burning of a contact by switching while maintaining the basic constitution of an electric gun. <P>SOLUTION: The electric gun constituted to retreat a movable member 15 by mesh between a rack 25 and a sector gear 27 driven by a motor 30, is provided with a cutoff detecting switch 32 switched during the rotation of the sector gear 27, a trigger detecting switch 35 responding to trigger operation, and a semiconductor control part 40 controlling a current flowing to the motor 30 from a power source. A current is applied to the motor 30 by trigger operation to start the rotation of the sector gear 27, and the cutoff detecting switch 32 is turned on in the middle of retreat of the movable member 15 to cut off the current flowing to the motor 30. The movable member reaches the retreat limit due to the inertial rotation of the motor 30 to carry out compressing operation, and trigger operation is stopped to turn off the trigger detecting switch. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
