Title:
BEARING DEVICE
Document Type and Number:
Japanese Patent JP2023147977
Kind Code:
A
Abstract:
To provide a bearing device capable of stably performing radio transmission of radio waves to the outside of a bearing, and capable of suppressing deterioration of detection sensitivity of a gas sensor.SOLUTION: A bearing device 1 includes a bearing 2 and a retaining member 12. The retaining member 12 is fixed to one of an outer ring 3 and an inner ring 4. A circuit board 13 is fixed to a surface 12f of a side plate 12A in an axial direction. At least one gas sensor SSR for detecting a state of the bearing 2 and a wireless communication circuit for transmitting output of the gas sensor SSR to the outside by radio are mounted on the circuit board 13. A through hole 42 is formed in the side plate 12A, and a porous film 41 is attached to cover the through hole 42.SELECTED DRAWING: Figure 3
Inventors:
MAKINO TOMOAKI
KOIKE TAKASHI
OBA HIROAKI
KOIKE TAKASHI
OBA HIROAKI
Application Number:
JP2022055790A
Publication Date:
October 13, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C41/00; F16C33/41; F16C33/76; G08C17/00; G08C17/02
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office