Title:
BEARING DEVICE AND GENERATOR
Document Type and Number:
Japanese Patent JP2023147974
Kind Code:
A
Abstract:
To provide a small-sized bearing device which is suppressed in an axial protrusion amount, and a generator.SOLUTION: A bearing device 1 comprises: a bearing 2 including an outer ring 6, an inner ring 7 and rolling elements 8; an outer ring 11; a magnetic ring 5; a stator 14 arranged in such a way as to oppose the magnetic ring 5; and a circuit board 12. The circuit board 12 includes an acceleration sensor 22 and a temperature sensor 23 which detect a state of the bearing 2, and a wireless communication circuit 25 for wirelessly transmitting outputs of the acceleration sensor 22 and the temperature sensor 23 to the outside. The magnetic ring 5 and the stator 14 constitute a claw pole type generator G. The magnetic ring 5 is formed into an annular shape. The stator 14 is formed into an arcuate shape. The stator 14 includes a magnetic body member 16 in which claw portions 16a, 16b are formed, and a coil 18. The circuit board 12 is arranged in a position in which the circuit board is not overlapped on the stator 14 on the outer ring 11 when viewed from a rotary shaft direction of the bearing 2.SELECTED DRAWING: Figure 2
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Inventors:
KOIKE TAKASHI
SHIBUYA YUSUKE
SHIBUYA YUSUKE
Application Number:
JP2022055787A
Publication Date:
October 13, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C41/00; F16C33/80
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office