Casio Computer Co., Ltd.

Hajime Iguchi

Kazuma Kobayashi

Masaaki Hirai

Tadao Hirano

Yuji Doi

Chieko Tajima

Naohiko Sakurazawa

Tatsumi Ichimura

Yukio Funabara

A timepiece includes: a casing; a light transmission part; a function part; and a glue adhering the light transmission part to the casing. The casing includes: a projection projecting from an inner circumferential surface and extending along a circumferential direction; and a protrusion protruding from the inner circumferential surface and determining a position of the light transmission part. A lateral surface of the light transmission part is adhered to the inner circumferential surface. A peripheral part of a bottom surface of the light transmission part is adhered to a top surface of the projection. An outer circumferential surface of the function part extends along an inner surface of the projection. A space is present in a facing region where the projection faces the function part along the light transmission part. The space is wider in a specific section including the protrusion than in a section different from the specific section.

Timepiece and timepiece case

A switch device including a case provided with a through hole, an operation member including a shaft section which is inserted into the through hole of the case and a head section which is provided on an outer end portion of the shaft section and arranged outside the case, an elastic body which is arranged between outer surface of the case and inner surface of the head section of the operation member opposing the outer surface of the case, and forces the head section outward from the case by an elastic force of a material of the elastic body, and a slipping section which provides slipperiness in a rotational direction to the elastic body and the head section.

Switch device and timepiece

A switch device including a case having a through hole, a cylindrical member including a first cylindrical section having a small diameter arranged in the through hole of the case and a second cylindrical section having a large diameter arranged on an outer portion of the case, an operation member including a shaft section slidably inserted into the first cylindrical section and a head section slidably arranged in the second cylindrical section, a waterproof member provided between an inner peripheral surface of the second cylindrical section and an outer peripheral surface of the head section, and a vent passage that allows air inside the second cylindrical section and air outside the case to pass through a vent hole provided in the cylindrical member and a gap between an outer surface of the cylindrical member and an outer surface of the case for ventilation.

A wrist device is provided which includes a case body and bands attached to the case body. The wrist device also includes covering portions which cover a portion of the case body.

Band and wrist device

A wrist device comprises a case complete and bands attached to the case complete. The wrist device comprises covering portions formed in the bands. A portion of the case complete is covered with the covering portions.

A pair of band holding members are attached by joint pins to band attachment portions of a watch case formed at positions of 12 o'clock and 6 o'clock of a dial in the watch case. The band holding members extend obliquely and outwardly from a back surface of the watch case in a direction opposite to a front surface thereof. A watch band insertion slot is formed in each of the holding members to extend from a first position which is positioned at or away from the back surface of the watch case to a second deposition which is positioned further away from the back surface of the watch case than the first positions and to open at the first and second positions. A watch band consisting of one band piece is passed through the watch band insertion slots of the band holding members so that the watch band projects its both end portions from the openings of the second positions of the insertion slots of the band holding members toward outsides of the holding members and extends along the back surface of the watch case.

Growing community of inventors

Fuchu, Japan

Hajime Iguchi