To make a device compact, reduce the operating force of a moving plug, and prevent the generation of a semi-fitting state caused by the imperfect insertion of the moving plug.
A guide groove 10 is installed in a device body 2, a projection 42 is installed in the moving plug 3, the projection 42 is guided along the guide groove 10, a current carrying part 41 of the moving plug 3 is installed so as to be capable of inserting between a circuit opening position where the current carrying part 41 comes in contact with only a load side terminal 12 and a circuit closing part where the current carrying part 41 comes in contact with both of the load side terminal 12 and a power source side terminal 13. The guide groove 10 has a section corresponding to an insertion section where the current carrying part 41 of the moving plug 3 comes in contact with the power source side terminal 13 positioning on the insertion innermost side of the device body 2 as a guide part for rotation 10c extending in the inclined innermost part by perpendicularly crossing to the insertion direction of the moving plug 3, and an introducing section in the front of insertion reaching the guide part for rotation 10c as a rotating induction guide part 10b having a large curvature radius.
SATO NARUHIRO
YOKOYAMA HIDENORI
KOBAYASHI HIROSHI
TOYOTA MOTOR CORP
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