Title:
BEARING WITH ROTATION SENSOR
Document Type and Number:
Japanese Patent JP2023045295
Kind Code:
A
Abstract:
To provide a bearing with a rotation sensor capable of enhancing detection accuracy of a magnetic sensor.SOLUTION: A bearing 1 with a rotation sensor includes: an inner ring 2 being a rotary ring; an outer ring 4 being a fixed ring; rolling elements 6 disposed between the inner ring 2 and the outer ring 4; a retainer 8 for retaining the rolling elements 6; and a rotation sensor 14. The rotation sensor 14 detects a rotation state of a rotary object as a physical amount and converts the same into an electric signal and outputs rotation information. The physical amount is change of magnetic flux, and the rotation sensor 14 reads out the change of magnetic flux, and converts the same into an electric signal or a signal of voltage change in which absolute angle information and relative angle information are encoded, and outputs the signal. The rotation sensor 14 has: a magnetic ring 16 disposed on a rotary ring 2 side and generating magnetic flux; and a magnetic sensor 18 disposed on a fixed ring 4 side for reading out the change of magnetic flux. The magnetic ring 16 is fixed to an outer diameter face 10a of a rotary shaft body 10 inserted into the inner ring 2.SELECTED DRAWING: Figure 1
Inventors:
ITO HIROYOSHI
Application Number:
JP2021153614A
Publication Date:
April 03, 2023
Filing Date:
September 21, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C41/00; F16C19/06; F16C33/41; G01D5/245
Attorney, Agent or Firm:
Shuji Sugimoto
Takeo Tsutsumi
Daisuke Kaneko
Hiroki Taniguchi
Kenichi Nakata
Yuka Kobayashi
Shinji Nakao
Takeo Tsutsumi
Daisuke Kaneko
Hiroki Taniguchi
Kenichi Nakata
Yuka Kobayashi
Shinji Nakao