Ricoh Company, Ltd.

Akemi Miyoshi

Junichi Shinohara

Ikuya Tsurukawa

Kouji Yokoyama

A contact structure having a spring with electro conductivity. The spring is fixed at one inner end side of a battery housing by engaging a plurality of inflection parts of the spring to one end side of the battery housing. The spring urges the battery to the other end side of a battery housing. An end portion on movable side end of the spring is extended toward an opening on a lateral face of the battery housing. The end portion is formed on a contact side end of the spring that is contacted with the battery, and is connected to one end side of a bypassing lead wire. An end portion on the fixed side end of the spring is connected to the other end side of the bypassing lead wire. The end portion of the fixed side end of the spring is connected to a power source lead wire. A free end of the contact movable side end can be bent away from the battery to provide a solder connection to the bypass wire.

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Yokohama, Japan

Akemi Miyoshi