| 发明名称 |
STEPPING MOTOR, TIMEPIECE MOVEMENT, TIMEPIECE, AND MANUFACTURING METHOD OF STEPPING MOTOR |
| 摘要 |
A stepping motor includes a rotor that is used in rotating an indicating hand, and a stator that configures a magnetic path, that is made of an alloy containing Fe, Ni, and Cr, and in which a Cr-diffusion region whose Cr-concentration is 14 mass % or greater is disposed in a portion whose cross-sectional area in the magnetic path is smaller than a cross-sectional area of other portions. |
| 申请公布号 |
US2017108833(A1) |
申请公布日期 |
2017.04.20 |
| 申请号 |
US201615295477 |
申请日期 |
2016.10.17 |
| 申请人 |
Seiko Instruments Inc. |
发明人 |
YAMAMOTO Kosuke;KINOSHITA Shinji |
| 分类号 |
G04C3/14;H02K15/02;H02K15/12;G04B19/04;H02K1/02 |
主分类号 |
G04C3/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A stepping motor comprising:
a rotor configured to rotate an indicating hand; and a stator configured to form a magnetic path, the stator being configured to be made of an alloy containing Fe, Ni, and Cr, and the stator comprising a Cr-diffusion region whose Cr-concentration is 14 mass % or greater is disposed in a portion whose cross-sectional area in the magnetic path is smaller than a cross-sectional area of other portions in the magnetic path. |
| 地址 |
Chiba-shi JP |
