Title:
着磁方法及び着磁装置
Document Type and Number:
Japanese Patent JP6925015
Kind Code:
B2
Abstract:
A magnetization method and a magnetization apparatus for forming an objective magnetized state in a one-dimensional region of a magnetic body, and a magnet for a magnetic encoder. In the magnetization method, magnetism in one direction is applied to an entire half wavelength interval of a sine wave on the magnetic body by a magnetizing yoke and a magnetized state of a first-order rectangle wave or of a first-order trapezoidal wave is formed in the interval, the magnetized state presenting polarity information in a rectangle or trapezoidal pulse shape; and thereafter, magnetism in opposite direction is applied to a start point and a terminal point of the interval by the same magnetizing yoke or a different magnetizing yoke one time or several times and the magnetized state of the first-order rectangle wave or of the first-order trapezoidal wave is changed into the objective magnetized state.
Inventors:
Youshino
Application Number:
JP2017026253A
Publication Date:
August 25, 2021
Filing Date:
February 15, 2017
Export Citation:
Assignee:
Uchiyama Industry Co., Ltd.
International Classes:
H01F13/00; G01D5/245
Domestic Patent References:
| JP2231951A | ||||
| JP62111776U | ||||
| JP2015095544A | ||||
| JP2016208676A | ||||
| JP3056061A | ||||
| JP10127016A | ||||
| JP2008039744A | ||||
| JP2009025163A |
Foreign References:
| WO2015136690A1 | ||||
| EP0409661A1 | ||||
| US20160334243 | ||||
| CN106104211A | ||||
| US20100001717 | ||||
| US20150130571 | ||||
| CN104637648A |
Attorney, Agent or Firm:
Kyomei International Patent Service Corporation
Hiroyuki Nakai
Okumura Kimitoshi
Shuko Okimoto
Hiroyuki Nakai
Okumura Kimitoshi
Shuko Okimoto