Title:
TRAIN WHEEL OF TIMEPIECE
Document Type and Number:
Japanese Patent JP3104376
Kind Code:
B2
Abstract:
PURPOSE: To enhance holding force by increasing the diameter of the press- fitting part of a shaft and a gear in the train wheel of a timepiece.
CONSTITUTION: A shaft 10 made of metal, wherein a flange-shaped large- diameter part 15 is formed, and a gear part 20 made of synthetic resin, wherein a through hole 23 into which the shaft 10 is inserted and a coupling recess part 24 into which the large-diameter 15 is press-fitted are formed on the same shaft, are provided. When the large-diameter press-fitting part 15 of the shaft 10 is press-fitted into the coupling recess part 24 of the gear part 20, the mutual compressing force between the outer surface of the large-diameter press-fitting part 15 and the inner surface of the coupling recess part 24 is increased, and the holding force of the shaft 10 and the gear part 20 is enhanced.
Inventors:
Yuu Kiuchi
Masayoshi Tanasawa
Masayoshi Tanasawa
Application Number:
JP5718892A
Publication Date:
October 30, 2000
Filing Date:
February 12, 1992
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
F16B4/00; F16D1/06; F16D1/072; G04B13/02; (IPC1-7): G04B13/02; F16B4/00; F16D1/06
Domestic Patent References:
| JP236392A | ||||
| JP54133875U | ||||
| JP1168893U | ||||
| JP51156867U |
Attorney, Agent or Firm:
Jiro Sugimura