Train wheel structure of electronic timepiece

Details Train wheel structure of electronic timepiece Train wheel structure of electronic timepiece

G - Physics

04

C

58/12

G04C 15/00 (2006.01) G04B 13/00 (2006.01) G04B 31/00 (2006.01) G04C 3/00 (2006.01) G04C 3/14 (2006.01)

Patent

CA 1303366

ABSTRACT A train wheel of an electronic timepiece having more than two motors which drive hand wheels through individual train wheels includes a guide pipe driven into and fixed in a bottom plate in the timepiece. The first hand wheel driven by the rotor of the first motor through the first train wheel has a central shaft as its rotational axis. The central shaft of the first hand wheel is inserted into the guide pipe so as to be guided and supported by the inner surface of the guide pipe. The second hand wheel has a central pipe as its rotational axis. The central pipe of the second hand wheel has the guide pipe inserted therein so as to be guided and supported by the outer surface of the guide pipe. As a result of this arrangement, the hand wheels do not come into contact with each other whereby the drive force of one of the hand wheels is not transmitted to the other hand wheel.

584661

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