Title:
DOUBLE ROW MAGNETIC ENCODER AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2018048827
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a double-row magnetic encoder that does not require a special magnetization yoke equipped with a magnetic shield member and allows a double-row magnetic encoder track to be magnetized by a general magnetization yoke, and which can be manufactured at low cost, and a manufacturing method therefor.SOLUTION: A double-row magnetic encoder 4 comprises a plurality of individual magnetic encoders 1 arranged in a row in the axial direction. The individual magnetic encoders 1 include an annular core grid 2 and a single row of annular magnetic encoder track 3 formed on the outer circumference of the core grid. A magnetic encoder track 11 has its N and S poles magnetized by a prescribed magnetic pattern. The core grids 2 of adjacent individual magnetic encoders 1 are joined so as not to be misaligned by fitting a fitting recess 2a and a fitting protrusion 2b formed on axial end faces facing each other.SELECTED DRAWING: Figure 2
Inventors:
KOIKE TAKASHI
FUKUSHIMA YASUYUKI
FUKUSHIMA YASUYUKI
Application Number:
JP2016182862A
Publication Date:
March 29, 2018
Filing Date:
September 20, 2016
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
G01D5/245; H01F13/00
Attorney, Agent or Firm:
Masashi Noda
Shuji Sugimoto
Shuji Sugimoto