Patent ID: 9257885
Filing Date: 2016-02-09
CPC Classification: H02K

Claim Text:
1. A motor including a motor rotor, and a magnet assembly for a sensor for detecting a rotational position of the said motor rotor, the motor comprising: an insert nut that has a knurled part at two places on the surface thereof along an axial direction thereof with projections for whirl stop and slip-off stop formed on the knurled part, and that is embedded between the motor rotor and the magnet assembly to perform fastening between the motor rotor and the magnet assembly, wherein in the insert nut a concave part between the knurled parts is situated at a mounting boundary between the motor rotor and the magnet assembly, and wherein the motor rotor and the magnet assembly are fastened with only the insert nut, and wherein a tapped hole of the insert nut is used as a breathing hole for establishing communication between an outside space and a hole of the motor rotor engaged with a shaft.