| 摘要 |
PROBLEM TO BE SOLVED: To prevent all batteries from being pulled out at the same time in replacement of the batteries.SOLUTION: Four pieces of slots 10 each for housing and holding a battery case 8 including batteries are provided inside a battery-housing box 6 aligned in a circle so as to surround a support. Four pieces of rocking members 11 are provided for making a seesaw movement astride the slots 10 adjacent to each other in a peripheral direction. A rear-end side protrusion 14 is provided at a front surface lower end part of the battery case 8, and an exit-side protrusion 15 is provided at an upper-end right side. At insertion of a battery case 8 in any nth slot 10, a rear-end side protrusion 14 passes through pushing down an end side of the rocking member 11. With the battery case 8 in a state housed in the nth slot 10, the exit-side protrusion 15 is protruded toward an n-1th slot 10 side, and the other end side of the rocking member 11 at the boundary is rocked upward, thereby the battery case 8 is pushed upward. |
