Motor having sensor for detecting operating state of bearing
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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Abstract
A motor includes a stator unit having a stator, a rotor, a first bearing for supporting a first shaft portion of a shaft of the rotor in a first portion of the stator unit, a second bearing for supporting a 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, and a guide path provided in the stator unit, for guiding a first signal line of the first sensor from the first portion to the second portion.
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Citations
18 Claims
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1. A motor comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A motor comprising:
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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, a second housing attached on the stator, for supporting the second bearing, and a tie bolt for connecting the stator, the first housing and the second housing to each other; the tie bolt has a through hole extending along a central axis of the tie bolt; and the guide path includes the through hole of the tie bolt. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification