Seiko Epson Corporation

Imao Hiraga

Kenichi Okuhara

Shigeyuki Fujimori

Yoichi Hayashi

To provide a display device for a timepiece wherein model changes can be easily made with a simple structure in a timepiece with a retro display. In a day display device, an hour wheel, day intermediate wheel, and cam are disposed on the same axis, and a lever and small day indicator are disposed so as to enclose these components, whereby a simple configuration can be achieved. A large space for accommodating the lever can be provided between the substantial center and the peripheral edge of a main plate on which the hour wheel, day intermediate wheel, and cam rotate on the same axis, and various shapes are made possible by freely extending the lever from the substantial middle to the peripheral edge of the main plate. Therefore, it is possible to form first through third gear parts through, and to provide three positions A through C for incorporating the small day indicator. This has merits in that timepieces of different models can thereby be easily manufactured merely by changing the position for incorporating the small day indicator, and there is no need to change the configuration of the movement when the model is changed.

Display device for timepiece, movement, and timepiece

A timepiece display apparatus causes a day hand to move reciprocally by means of center wheel, driven day wheel, cam, lever, and rack. These wheels, cam, lever, and rack can be easily arranged to fit the available space on the main plate of the movement, and the construction of the display apparatus can thus be simplified. Furthermore, locating the cam between the rotary shaft and rack of the lever portion enables arranging a plurality of parts more compactly than if the cam is disposed to a different location, and affords a simple assembly.

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Shenzhen, China

Imao Hiraga