Matsushita Electric Industrial Co., Ltd.

Takashi Kaiho

Takeshi Sato

Yasunobu Ikeda

Kanta Judai

An internal battery ( ) has a battery terminal provided on a tip and has a third engagement projection ( ) provided on the other end in a vertical direction. A battery housing portion ( ) has a connector ( ) provided on a tip and has, on a rear end, a battery hook ( ) for pressing the third engagement projection ( ) interlockingly with a sliding operation from a release position to a lock position. The battery hook ( ) is slid from the release position to the lock position to press the third engagement projection ( ). Consequently, the battery terminal is caused to abut on the connector ( ) and the internal battery is fixed into the battery housing portion ( ). A battery ( ) is fixed and attachment is thus completed.

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Yokohama, Japan

Takashi Kaiho