To improve durability of a charging gun, a connector and a connecting part.

A moving frame 40 is moved toward an abutting position from an opposing position while sandwiching the moving frame 40, a ratchet claw 44 is engaged with ratchet teeth 70 by releasing a hand from the moving frame 40, and the a state that the moving frame 40 is positioned in the abutting position is held. Here, a charging gun 2 is inserted into a charging port 16 being a connecting part, and a battery is charged. Even if a side flap 14 falls down during charging, the moving frame 40 receives the side flap 14. Accordingly, unreasonable forces can be prevented from being applied to the charging gun 2 and the charging port 16 by the side flap 14, and there takes place an advantage for improving the durability of the charging gun 2 and the charging port 16.