To provide an operation mechanism with simplified manual operation, capable of easily determining that opening and closing of a switch is in the middle of operation.
An interlocking device of the switch includes a turnable connecting shaft 1 connected to the switch, an interlocking lever 2 fixed to the connecting shaft 1, protrusions 3, (4) fixed to the interlocking lever 2, an interlocking plate 14 provided in a shutter 7 locked by the protrusions 3, (4), and an insertion opening 6 which is covered with the shutter 7 and in which a manual handle to turn the connecting shaft 1 is inserted. In the middle of operation for turning the interlocking lever 2 to open and close the switch, the interlocking plate 14 abuts on the protrusions 3, (4), and the insertion opening 6 is opened even if the manual handle is removed.
MATSUZAKI JUN
KUBOTA NOBUTAKA
IKEDA JUNICHI
