| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack equipped with a holder capable of holding unit batteries, in a state in which contact sites with the unit batteries are dispersed over a wide range. SOLUTION: The battery pack is provided with a holder 23 equipped with a plurality of cartridge receivers 121 for receiving insertion of each unit battery. Each cartridge receiver 121 is provided with a plurality of sidewalls 123 surrounding a periphery face of the unit battery and a plurality of ribs 125, arranged dispersed in a peripheral direction on a sidewall face 131. Furthermore, the cartridge receiver 121 has a draft provided at the sidewalls 123, while, each rib 125 has its gradient of a tiptop face along an insertion direction of the unit battery 21 made smaller than the draft of each sidewall 123. Additionally, the unit battery 21 inserted into the cartridge receiver 121 is held, as it is brought into contact with the tip-top surface of the plurality of ribs 125. COPYRIGHT: (C)2011,JPO&INPIT
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