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Patent Searching and Data


Title:
SENSOR MAGNET ASSEMBLY AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/131693
Kind Code:
A1
Abstract:
An embodiment of this sensor magnet assembly comprises: a fixed member that has a cylindrical shape extending in the axial direction and that is fixed to an end on one side, in the axial direction, of a shaft; and a sensor magnet that is fixed to the outer circumferential surface of the fixed member. The fixed member includes: an annular first groove that extends in the circumferential direction and that is recessed radially inwardly from the outer circumferential surface of the fixed member; and a plurality of first recesses that are recessed radially inwardly from the outer circumferential surface of the fixed member and that are arranged with spacings therebetween along the circumferential direction. The plurality of first recesses are arranged at a position different from the first groove in the axial direction. The first groove and the plurality of first recesses are arranged in a section of the outer circumferential surface of the fixed member at which the sensor magnet is to be fixed. The sensor magnet includes a section to be located inside the first groove and a section to be located inside the first recesses.

Inventors:
TAKAHASHI SHUNSUKE (JP)
Application Number:
JP2018/000720
Publication Date:
July 19, 2018
Filing Date:
January 12, 2018
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
H02K11/215; H02K29/08
Foreign References:
JPH09121525A1997-05-06
JPH0647082U1994-06-28
JP2004274860A2004-09-30
JPH09215237A1997-08-15
JPH1118391A1999-01-22
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