SWITCH OPERATING DEVICE

PROBLEM TO BE SOLVED: To prevent a motor operation from being hindered even in the malfunction of an auxiliary relay and provide excellent operation reliability by connecting a self-auxiliary switch contact in series to an auxiliary relay contact within a motor operating circuit. SOLUTION: In the middle of ON-operation of a motor operating circuit, ON-side motor operating auxiliary relay contacts 24, 25 and self-auxiliary switch contacts 33 (B11), 33 (B12) are closed, and OFF-side motor operating auxiliary relay contacts 30, 30 and self-auxiliary switch contacts 33, 34 are opened. Even if the auxiliary relay contacts 30, 30 are erroneously made by the excessive operating vibration of a drive spring, the self-auxiliary switch contacts 33 (A11), 33 (A12) is kept open. Thus, since the self-auxiliary switch contacts 33, 34 are opened even if the auxiliary relay contacts 24, 24, 30, 30 are made, formation of a short-circuiting circuit without through a motor 25 can be prevented, and the ON-operation can be continued.