Title:
MAGNET HOLDER AND MAGNET UNIT
Document Type and Number:
WIPO Patent Application WO/2020/170859
Kind Code:
A1
Abstract:
This magnet holder 4 is provided with a shaft attachment unit 41 to which a shaft 2 is fixed by press fitting, and a magnet holding unit 42 which is provided on one side of the shaft attachment unit 41 in the axial direction and which holds the periphery of a magnet 5, and an undercut portion 50 that engages with the magnet 5 in the axial direction is provided on the inner peripheral surface 43 of the magnet holding unit 42 facing the magnet 5, wherein the magnet holding unit 42 and the shaft attachment unit 41 are integrally formed with a sintered metal, the outer peripheral surface and the end surface of the magnet holding unit 42, and also the inner peripheral surface of the shaft attachment unit 41, are sized, and the undercut portion 50 is formed through plastic deformation of the magnet holding unit 42.
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Inventors:
SUZUKI SHOUHEI (JP)
TAKAKUSU TOSHIHIRO (JP)
TAKEDA DAISUKE (JP)
TAKAKUSU TOSHIHIRO (JP)
TAKEDA DAISUKE (JP)
Application Number:
PCT/JP2020/004839
Publication Date:
August 27, 2020
Filing Date:
February 07, 2020
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B22F3/24; B22F5/10; G01D5/245; H02K11/215
Foreign References:
| JP2017173035A | 2017-09-28 | |||
| JPH07332363A | 1995-12-22 | |||
| JP2014057431A | 2014-03-27 | |||
| JPS5141780B2 | 1976-11-11 | |||
| JP2016205977A | 2016-12-08 |
Other References:
See also references of EP 3928901A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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