Title:
BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/182091
Kind Code:
A1
Abstract:
A bearing device (1) comprises a standard bearing (2) including an outer ring (3), an inner ring (4), and rolling elements (8). The bearing device (1) comprises a magnetic ring (7) fixed to the inner ring (4), a stator (5) disposed so as to face the magnetic ring (7) in the radial direction of the standard bearing (2) and fixed to the outer ring (3), and a circuit board (13). The magnetic ring (7) and the stator (5) form a power generator (G) that generates AC power. The circuit board (13) includes at least one sensor that detects the state of the standard bearing (2), a wireless communication circuit (18), and a power supply circuit (17) that converts the AC power generated by the power generator (G) into DC power. The magnetic ring (7), the stator (5), and the circuit board (13) are disposed in an annular space defined by an end portion of the outer ring (3) and an end portion of the inner ring (4).
Inventors:
KOIKE TAKASHI (JP)
FUKUSHIMA YASUYUKI (JP)
MATSUBAYASHI KOHEI (JP)
MAKINO TOMOAKI (JP)
FUKUSHIMA YASUYUKI (JP)
MATSUBAYASHI KOHEI (JP)
MAKINO TOMOAKI (JP)
Application Number:
PCT/JP2023/010030
Publication Date:
September 28, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/06; F16C33/41; F16C41/00; G08C17/00
Domestic Patent References:
| WO2021161843A1 | 2021-08-19 | |||
| WO2021177354A1 | 2021-09-10 |
Foreign References:
| JP2003287046A | 2003-10-10 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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