Motor

Patent metadata

Field	Value
Publication number	US-9929620-B2
Application number	US-201514918744-A
Country	US
Kind code	B2
Filing date	Oct 21, 2015
Priority date	Nov 12, 2014
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

An object of the present invention is to provide a motor which has a maintenance port and of which the wire is insusceptible to disturbance noise. The motor includes: a bracket housing a rotor and a stator; a control device housing part located on the radial direction outside of the bracket; a control device located inside the control device housing part; a sensor housing part located at the end of the bracket on the side opposite to an output end; a motor sensor mounted at the end of a rotating shaft on the side opposite to the output end; and a coupling connector connecting the motor sensor and the control device with each other. The control device housing part and the sensor housing part communicate with each other. The coupling connector is located inside the sensor housing part. The sensor housing part has a port which has an opening in the axial direction, and the port and the coupling connector at least partially overlap with each other in the axial direction.

First claim

What is claimed is:

1. A motor comprising:
a rotating shaft extending in a central axial direction and having one end serving as an output end;
a rotor in which the rotating shaft is fixed;
a stator located on the radially outside of the rotor;
a bracket housing the rotor and the stator;
a control device housing part located on the radially outside of the bracket;
a control device located inside the control device housing part;
a sensor housing part located at an end of the bracket on a side opposite to the output end;
a motor sensor mounted at an end of the rotating shaft on the side opposite to the output end; and
a coupling connector connecting the motor sensor and the control device with each other, wherein
an internal space of the control device housing part and an internal space of the sensor housing part communicate with each other,
the coupling connector is located inside the sensor housing part, and
the sensor housing part has a port which has an opening in the axial direction, and the port and the coupling connector at least partially overlap with each other in the axial direction.

2. The motor according to claim 1 , wherein the motor sensor includes a magnet mounted on the rotating shaft, a Hall element facing the magnet, and a sensor circuit board on which the Hall element is mounted.

3. The motor according to claim 2 , wherein the coupling connector includes a first connector connected with the control device, a second connector connected with the motor sensor, and a bridge connector connecting the first connector and the second connector with each other.

4. The motor according to claim 3 , wherein the second connector is mounted on the sensor circuit board, and at least a part of the second connector overlaps the port in the axial direction.

5. The motor according to claim 3 , wherein the first connector and the second connector are mounted on the sensor circuit board, and the first connector and the second connector overlap the port in the axial direction.

6. The motor according to claim 3 , wherein the port overlaps the first connector and the second connector in the axial direction, and the first connector is disposed closer to the control device than the second connector is.

7. The motor according to claim 1 , wherein the motor sensor is a resolver.

8. The motor according to claim 7 , wherein the coupling connector includes a first connector connected with the control device, a second connector connected with the motor sensor, and a bridge connector connecting the first connector and the second connector with each other.

9. The motor according to claim 8 , wherein the second connector is connected with a wire extending in the axial direction from a stationary part of the resolver.

10. The motor according to claim 7 , wherein a connection part of the coupling connector overlaps at least a part of the resolver in the axial direction.

11. The motor according to any one of claims 7 , wherein the port overlaps at least a part of the resolver in the axial direction.

12. The motor according to claim 11 , wherein the port overlaps at least a part of the stationary part of the resolver in the axial direction.

13. The motor according to claim 8 , wherein the port overlaps the first connector and the second connector in the axial direction, and the first connector is disposed closer to the control device than the second connector is.

14. The motor according to claim 1 , wherein, in the radial direction from the rotating shaft toward the control device, the port is disposed further on the control device side than the rotating shaft.

15. The motor according to claim 1 , wherein the bracket has a bracket main body part housing the rotor and the stator, and two base parts protruding from both ends in the axial direction of the bracket main body part toward the side opposite to the control device housing part, and an external member connection mechanism connected with an external member is provided on the outer periphery of the bracket main body part.

16. The motor according to claim 1 , wherein the motor comprises a switched reluctance motor.

Assignees

• Nidec Corp

Inventors

• Nakamura Yoshinobu
• Nakanishi Masato

Classifications

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title

• H02K9/19

  for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil · CPC title

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/225 Primary

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title