Kokusai Electric Co., Ltd.

Isamu Sekine

Takeshi Sato

Tatsuo Kuwayama

Ryuichi Takahashi

A splashproof construction for a portable electronic device, comprising an electronic device main unit, and a battery pack to be mounted on the electronic device main unit, whereby one of either the electronic device main unit or the battery pack has a boundary surface formed along a combined surface and a peripheral edge and with a graded step with respect to the combined surface, and a guide rail provided adjacent to the boundary surface, and the other of either the electronic device main unit or the battery pack has a peripheral wall aligned with the boundary surface and a guide groove to be slidably engaged with the guide rail, or a bottom wall of the peripheral wall has a notch abutting on a lower surface of the graded step on the boundary surface, or a water-repellent sheet is provided at the bottom of the guide groove, or a seal plate made of a highly elastic material is provided either on an end surface of the battery pack abutted on the electronic device main unit at an end point of sliding when the battery pack is slid and mounted or on an abutment surface of the electronic device main unit in contact with the end surface.

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Tokyo, Japan

Isamu Sekine