Sony Corporation

Sony Mobile Communications Inc.

Keiichi Sasamori

Hiroshi Yamamoto

Tetsuya Ito

Mizuho Ikeda

Katsumi Saito

A mobile terminal device that includes a frame that supports a structure of the mobile terminal, a button that fits with a hole in the frame, a gasket that contacts with the button, a first area of which contacting with the button being configured to move when the button is pushed, and a second area of which being fixed to the frame by an adhesive, processing circuitry, and a switch that contacts with the gasket, and moves and applies current to the processing circuitry when the gasket moves in response to the button being pushed.

Mobile terminal device and a chassis

A waterproofing structure for a mobile terminal, includes an annular groove that surrounds an outer edge of a predetermined waterproof area of a mobile terminal. A waterproof lid covers an entire surface of the waterproof area, and includes an annular protrusion that fits into the annular groove in the waterproof area, and an elastic resin portion that covers the annular protrusion. The elastic resin portion press-contacts and adheres to only one of two side wall surfaces of the annular groove when the annular protrusion is fitted into the annular groove.

Growing community of inventors

Chiba, Japan

Keiichi Sasamori