| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a disconnector with a ground switch that prevents malfunction in both motor operation and manual operation by one interlock mechanism, facilitates resetting of an interlock, and allows a movable blade to securely occupy three positions. <P>SOLUTION: When an interlock mechanism is reset and an operation shaft is pressed by a projection of a cam, a hole of an upper plate and a lock pin shift in position from each other to support the lock pin by the upper plate. When the interlock mechanism starts operating and the operation shaft comes out of the projection of the cam, the hole of the upper plate is aligned with the position of the lock pin to make the lock pin pass through the hole of the upper plate, and the hole of a lower plate and the lock pin shift in position from each other to support the lock pin by the lower plate. When the interlock mechanism locks and the operation shaft is pressed by a next projection of the cam, the hole of the lower plate is aligned with the position of the lock pin to make the lock pin pass through the hole of the lower plate, and the lock pin engages with a lock pin receiver to stop a gear train from rotating. <P>COPYRIGHT: (C)2012,JPO&INPIT |
