Title:
BEARING DEVICE AND GENERATOR
Document Type and Number:
WIPO Patent Application WO/2023/189588
Kind Code:
A1
Abstract:
This bearing device (1) comprises: a bearing (2) including an outer ring (6), an inner ring (7) and rolling elements (8); an outer loop (11); a magnetic ring (5); a stator (14) arranged to face the magnetic ring (5); and a circuit board (12). The circuit board (12) includes an acceleration sensor (22) that detects the state of the bearing (2), a temperature sensor (23), and a wireless communication circuit (25) that wirelessly transmits the 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 generator (G). The magnetic ring (5) has a toric shape. The stator (14) has a toric shape. The stator (14) includes a magnetic member (16) having claw portions (16a, 16b) formed thereon, and a coil (18). The circuit board (12) is arranged on the outer loop (11) at a position not overlapping the stator (14) when viewed from the rotation axis direction of the bearing (2).
Inventors:
KOIKE TAKASHI (JP)
SHIBUYA YUSUKE (JP)
SHIBUYA YUSUKE (JP)
Application Number:
PCT/JP2023/010032
Publication Date:
October 05, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/80; F16C41/00; H02K1/14
Domestic Patent References:
| WO2017171067A1 | 2017-10-05 |
Foreign References:
| US20170045089A1 | 2017-02-16 | |||
| JP2007057300A | 2007-03-08 | |||
| JP2003042151A | 2003-02-13 | |||
| JP2021011890A | 2021-02-04 | |||
| JP2008079471A | 2008-04-03 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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