| 摘要 |
PROBLEM TO BE SOLVED: To positively set a battery case and to improve appearance. SOLUTION: A main frame 1 is provided with a locking device 24 and a pop-up mechanism, and a lower end part is provided with a motor side connector 26. The battery case 20 is attached/detached sliding in the almost longitudinal direction of the main frame 10 holding a handle 86 provided rotatably to the front end part. When mounting, a battery side connector 100 is connected to a motor side connector 26 on the body side and fixed by the locking device 24. The locking device 24 has a rock pin 126 freely projecting and receding by a lock mechanism. A body frame including the main frame 10 is covered with a body cover 44. The body cover 44 is continuous with the outline face of the battery case 20 and covers the motor side connector 26, a battery side connector 100, the lock pin 126, a locking plate of the battery case on the object side, and the like.
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