Title:
ROTOR FOR MICRO-MOTOR OF TIMEPIECE
Document Type and Number:
Japanese Patent JP3120206
Kind Code:
B2
Abstract:
PURPOSE: To reduce the impulsive sound which is produced when a bearing comes into collision with a tenon section by making the effective length of a rotor shaft longer so that the rotor shaft can easily bend.
CONSTITUTION: A rotor for micro-motor of watch is constituted of a rotor shaft 1, rotor pinion 2 integrally formed with the shaft 1, and permanent magnet 4 firmly attached to the shaft 1. At the central part of the pinion 2, a doughnut- like recessed section 2a is formed concentrically to the shaft 1 and, because of the section 2a, the effective length of the shaft 1 on the pinion 2 side becomes longer by the depth of the section 2.
Inventors:
Takuo Urabe
Application Number:
JP6767295A
Publication Date:
December 25, 2000
Filing Date:
March 27, 1995
Export Citation:
Assignee:
Seiko Clock Co., Ltd.
International Classes:
G04C3/14; H02K1/27; (IPC1-7): G04C3/14; H02K1/27
Domestic Patent References:
| JP739092A | ||||
| JP54122810A |
Attorney, Agent or Firm:
Kazuko Matsuda