Casio Hitachi Mobile Communications Co., Ltd.

Tohru Tanigawa

Katsuhiro Nara

Yasuhiko Kawasaki

Shinya Yasuda

Shigeru Kato

Fumio Tsutaichi

Tatsuya Miyagawa

A foldable cellular phone with a plastic housing having an operation section and a plastic housing having a main display section that are joined by a hinge on one end side to freely open and close, comprising an impact resistant handle composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the main display section; a connector cover composed of elastic material protruded and formed on the opposite side end from the hinge of the housing having the operation section; and a hinge cover composed of elastic material formed on a protrudent portion from the hinge of both housing ends when both housings are in a folded state.

Foldable cellular phone

A waterproof structure with a simple structure and a good assemble workability is provided. A recess portion is formed on a side of an inner casing, and a through hole is formed at the bottom of the recess portion. The through hole runs to a housing recess portion, and a dome switch opposes to the through hole in the inner casing. A protrusion of a cup member is inserted into the through hole from the outside of the inner casing. A protrusive portion protruding from the bottom surface of a push button is inserted into the opening of the cup member. A rubber sheet which couples the push button is sandwiched between the inner casing and a top cover and a back cover.

Waterproof structure of push button switch

Growing community of inventors

Tokorozawa, Japan

Tohru Tanigawa