Invention Application
US20160209812A1 STEPPING MOTOR, TIMEPIECE MOVEMENT, TIMEPIECE, AND MANUFACTURING METHOD OF STEPPING MOTOR
审中-公开
步进电机，定时运动，定时电机和步进电机的制造方法
- Patent Title: STEPPING MOTOR, TIMEPIECE MOVEMENT, TIMEPIECE, AND MANUFACTURING METHOD OF STEPPING MOTOR
- Patent Title (中): 步进电机，定时运动，定时电机和步进电机的制造方法
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Application No.: US14997714Application Date: 2016-01-18
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Publication No.: US20160209812A1Publication Date: 2016-07-21
- Inventor: Kosuke Yamamoto , Shinji Kinoshita
- Applicant: SEIKO INSTRUMENTS INC.
- Priority: JP2015-008886 20150120; JP2015-206547 20151020
- Main IPC: G04C3/14
- IPC: G04C3/14 ; H02K15/02 ; H02K37/00
Abstract:
There is provided a stepping motor including a stator that is integrally molded by using a Fe—Ni alloy plate through machining, that has a rotor accommodating through-hole, and in which a magnetic path is disposed around the rotor accommodating through-hole, a rotor that is rotatably arranged inside the rotor accommodating through-hole, and a coil that is disposed in the stator. A Cr-diffusion region having a molten-solidified portion of Cr is formed in a portion of the magnetic path.
Public/Granted literature
- US10193425B2 Stepping motor, timepiece movement, timepiece, and manufacturing method of stepping motor Public/Granted day:2019-01-29
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