Title:
MANUFACTURE OF COMPONENT FOR CLOCK, CLOCK COMPONENT AND CLOCK
Document Type and Number:
Japanese Patent JP3521773
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a novel method for manufacturing a component for a clock capable of inexpensively manufacturing and suppressing a decrease in an accuracy of the component or a deterioration of its yield in the method for molding the component by a molding method.
SOLUTION: An outer peripheral region 11 of a main plate 10 is formed in a thick portion formed in an annular frame state. Thin parts 11a, 11b, 11c, 11d, 11e and 11f dispersively disposed at positions separate from each other in a circumferential direction are provided on the region 11. Further, an inner region from the region 11 is fundamentally thinned, and partly thicker parts 12, 13, 14, 15 and 16 than a periphery are provided at the inner region. In the method for manufacturing the plate 10, a molten metal material is cast from a gate 17 in a mold having a cavity corresponding to the plate, and injection molded.
Inventors:
Asuke, Kazumi
Takei, Atsuki
Hirabayashi, Tatsukado
Takei, Atsuki
Hirabayashi, Tatsukado
Application Number:
JP33960998A
Publication Date:
April 19, 2004
Filing Date:
November 30, 1998
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G04B29/02; G04B37/22; G04D3/00; (IPC1-7): G04B29/02; G04B37/22
Attorney, Agent or Firm:
上柳 雅誉 （外１名）