Title:
BEARING DEVICE
Document Type and Number:
Japanese Patent JP2023141395
Kind Code:
A
Abstract:
To provide a bearing device capable of being normally functioned while suppressing a dimension of the bearing device.SOLUTION: A bearing device 1 includes; a bearing 2 including an outer ring 3, an inner ring 4 and a rolling element 8; a magnetic ring 7 fixed to the inner ring 4; a stator 5 disposed in a manner of being opposed to the magnetic ring 7 in a radial direction of the bearing 2 and fixed to the outer ring 3; and a circuit board 13. The magnetic ring 7 and the stator 5 constitute a generator G generating AC power. The circuit board 13 includes: at least one sensor for detecting a state of the bearing 2; a wireless communication circuit 18; and a power source circuit 17 for converting AC power produced by the generator G to DC power. In an annular space formed by an end portion of the outer ring 3 and an end portion of the inner ring 4, the magnetic ring 7, the stator 5 and the circuit board 13 are disposed in a manner of not overlapped to each other in an axial direction of the bearing 2.SELECTED DRAWING: Figure 2
Inventors:
MATSUBAYASHI KOHEI
KOIKE TAKASHI
FUKUSHIMA YASUYUKI
KOIKE TAKASHI
FUKUSHIMA YASUYUKI
Application Number:
JP2022047704A
Publication Date:
October 05, 2023
Filing Date:
March 24, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C41/00; F16C19/06; F16C19/52
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office