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Motor having sensor for detecting operating state of bearing

  • US 10,461,608 B2
  • Filed: 01/12/2018
  • Issued: 10/29/2019
  • Est. Priority Date: 02/15/2017
  • Status: Active Grant
First Claim
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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, andthe guide path includes the first through hole of the stator.

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