Title:
WRIST WATCH WITH ROTARY WEIGHT
Document Type and Number:
Japanese Patent JP3275363
Kind Code:
B2
Abstract:
PURPOSE: To realize a smaller size and a less thickness of a rotary weight by a method wherein a thick part is formed on the outer circumference side of a rotary weight while a thin part on the side of the center of rotation thereof and a wheel train part is arranged in a range of a rotating locus of the thin part while a part of a coil is arranged in a range of a rotating locus of the thick part.
CONSTITUTION: A rotary weight 20 has a thick part 20a on an outer circumference part 20a and takes a locus rotating outside the most of built-in parts constituting a movement. A dynamo coil 29 has a part thereof overlapping a coil winding part flatly with respect to a thick part 20a. The winding part of the dynamo coil 29 overlaps a gear 25b of a dynamo rotor transmission wheel 25 and further, a MOSIC chip 32 constituting a circuit and a circuit substrate 37. This enables the ensuring of a half weight value of the rotary weight even if the diameter of the movement is small.
Inventors:
Shoichi Nagao
Application Number:
JP12606792A
Publication Date:
April 15, 2002
Filing Date:
May 19, 1992
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G04B5/10; G04B27/02; G04C3/14; G04C10/00; (IPC1-7): G04C10/00; G04C3/14
Domestic Patent References:
| JP3191892A | ||||
| JP6269191A | ||||
| JP6194525A | ||||
| JP340727A | ||||
| JP3179291A | ||||
| JP6244295U | ||||
| JP319991U |
Other References:
【文献】国際公開89/6833(WO,A1)
Attorney, Agent or Firm:
Masayanagi Ueyanagi (2 outside)
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