Title:
ROTARY DECORATION DEVICE
Document Type and Number:
Japanese Patent JP3279954
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary decoration device capable of rotating a decoration rotary shaft with low rotating force, requiring simple assembling work, and capable of reducing the manufacturing cost.
SOLUTION: A permanent magnet 12 is press-inserted into a recess 14 a formed centering on a decoration rotary shaft 7 on the lower face of a decoration body driving gear 8, and a permanent magnet 12 is arranged in a recess 14b near the permanent magnet 12 so that the same poles of the permanent magnets 12, 13 are faced to each other. Grooves 9 applying elasticity to the decoration body driving gear 8 when the permanent magnet 12 is press-inserted into the recess 14a are formed on the upper face and lower face of the decoration body driving gear 8, and the permanent magnet 12 can be simply pressed into the recess 14a. This device is simply assembled in a short time, the manufacturing cost can be sharply reduced, and the frictional load of the bearing portion of the decoration rotary shaft 7 is sharply reduced by the magnetic repulsion between the permanent magnets 12, 13. The decoration rotary shaft 7 fitted with a decoration body 6 can be rotated by low rotating force, the power consumption is reduced, the storage space of a battery is shrunk, and the whole device can be miniaturized.
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Inventors:
Toshiyuki Murata
Shigeru Fukuoka
Shigeru Fukuoka
Application Number:
JP11250397A
Publication Date:
April 30, 2002
Filing Date:
April 30, 1997
Export Citation:
Assignee:
Rhythm Watch Industry Co., Ltd.
International Classes:
A63H13/20; G04B45/00; (IPC1-7): A63H13/20; G04B45/00
Domestic Patent References:
| JP798386A | ||||
| JP7218654A | ||||
| JP5261181A | ||||
| JP6099993U | ||||
| JP6073589U |
Attorney, Agent or Firm:
Takahisa Sato