Slip structure of a timepiece
AssigneeCasio Computer Co., Ltd.
InventorsMasaru Shoji, Wataru Yamada, Masayoshi Tanazawa, Mitsunobu Yatabe, Kenichi Nakamura, Satoshi Fujio, Masaki Yokohama, Takashi Watanabe, Kanenori Ochiai
Life of this patent
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Abstract
Synthetic resin shaft and gear portions are molded to be capable of slipping each other. During a normal timepiece operation, the shaft and gear portions are integrally rotated. During a hand setting operation, the shaft portion is rotated with slip on the gear portion. In this slip structure of a timepiece, at least one of the shaft and gear portions is formed of an oil-containing resin material.
Claims42
A slip structure of a timepiece comprising
- a synthetic resin shaft portion, and
- a synthetic resin gear portion which is molded on said synthetic resin shaft portion to be capable of slipping, in which
- during a normal timepiece operation, said shaft and gear portions are integrally rotated, and during a hand setting operation, only said shaft portion is rotated, wherein
- at least one of said shaft and gear portions is formed of an oil-containing resin material.
A slip structure of a timepiece comprising
- a synthetic resin shaft portion, and
- a synthetic resin gear portion which is molded on said synthetic resin shaft portion to be capable of slipping, in which
- during a normal timepiece operation, said shaft and gear portions are integrally rotated, and during a hand setting operation, only said shaft portion is rotated, wherein
- at least one of said shaft and gear portions is annealed in a high-temperature oil.
A slip wheel structure of a timepiece comprising
- a synthetic resin shaft portion, and
- a synthetic resin gear portion which is molded on said synthetic resin shaft portion to be capable of slipping, in which
- during a normal timepiece operation, said shaft and gear portions are integrally rotated, and during a hand setting operation, only said shaft portion is rotated, wherein
- a fluorine-based resin film is interposed between a contact surface of said shaft and gear portions.
Dependencies are inferred from the claim text.