US Patent No. 10,461,608

MOTOR HAVING SENSOR FOR DETECTING OPERATING STATE OF BEARING


Patent No. 10,461,608
Issue Date October 29, 2019
Title Motor Having Sensor For Detecting Operating State Of Bearing
Inventorship Yuusuke Fukushima, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 10,461,608

1. A motor comprising:a stator unit having a stator;
a rotor having a rotor core inserted into the stator so as to form a gap, and a shaft including a first shaft portion and a second shaft portion, each protruding from the rotor core in opposite directions;
a first bearing for rotatably supporting the first shaft portion of the shaft in a first portion of the stator unit;
a second bearing for rotatably supporting the second shaft portion of the shaft in a second portion of the stator unit;
a first sensor for measuring a first parameter related to an operating state of the first bearing in the first portion of the stator unit, the first sensor having a first signal line for outputting the first parameter; and
a guide path provided in the stator unit, for guiding the first signal line from the first portion to the second portion;
wherein the stator unit includes a first housing attached on the stator, for supporting the first bearing, and a second housing attached on the stator, for supporting the second bearing,
the stator has a first through hole extending from a first end surface on which the first housing is attached to a second end surface on which the second housing is attached, and
the guide path includes the first through hole of the stator.