Motor

Patent metadata

Field	Value
Publication number	US-10651705-B2
Application number	US-201615766737-A
Country	US
Kind code	B2
Filing date	Oct 31, 2016
Priority date	Nov 9, 2015
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

Provided is a motor in which the positional misalignment of a terminal cover provided to a motor body can be suppressed. In a terminal cover ( 7 ) fixed to a motor body ( 40 ), an engagement plate part ( 75 ) extends from a cover part ( 71 ), which covers a terminal part ( 25 ) on a lateral surface of the motor body ( 40 ), to a position overlapping an end surface ( 12 ) on a counter-output side (L 2 ) of the motor body ( 40 ). The engagement plate part ( 75 ) is provided with an engagement recess ( 750 ) in which a projection ( 17 ) on the end surface ( 12 ) on the counter-output side (L 2 ) of the motor body ( 40 ) is fitted. Thus, even when external force is applied to the terminal cover ( 7 ), the terminal cover ( 7 ) is less likely to be subjected to positional misalignment. The engagement recess ( 750 ) is groove shaped, and the projection ( 17 ) is fitted to an end part, in the extending direction, of the engagement recess ( 750 ) formed in a groove shape.

First claim

The invention claimed is:

1. A motor comprising:
a motor main body comprising a rotation shaft which is protruded toward an output side; and
a terminal cover which is fixed to the motor main body;
wherein the motor main body comprises:
a terminal part which holds terminals in a side face of the motor main body; and
a protruded part which is protruded from an end face on an opposite-to-output side of the motor main body toward the opposite-to-output side;
wherein the terminal cover comprises:
a cover part which covers the terminal part on the side face of the motor main body; and
an engaging plate part which is extended from the cover part so as to overlap with the end face; and
wherein the engaging plate part comprises an engaging recessed part to which the protruded part is fitted.

2. The motor according to claim 1 , wherein the protruded part is located on a rotation center axial line of the rotation shaft.

3. The motor according to claim 2 , wherein the protruded part is formed by a bearing which supports the rotation shaft on the opposite-to-output side.

4. The motor according to claim 3 , wherein
a depth on a center side of the engaging recessed part is deeper than a depth of an adjacent portion to the center side, and
the protruded part is contacted with the adjacent portion.

5. The motor according to claim 4 , wherein
the engaging recessed part is a recessed part in a groove shape which is extended in a radial direction, and
the protruded part is fitted into a tip end part in an extending direction of the engaging recessed part.

6. The motor according to claim 5 , wherein
the terminal part comprises a terminal block which is protruded to an outer side in a radial direction, and
the cover part comprises an engaging part which is engaged with the terminal block.

7. The motor according to claim 6 , wherein
the terminal block comprises a recessed part which is opened toward one side in a rotation center axial line direction of the rotation shaft on an inner side in the radial direction, the recessed part being provided in a part of the terminal block in a circumferential direction of the motor main body, and
the engaging part comprises:
an arm part which is overlapped with an end part on one side in the rotation center axial line direction of the terminal block, and
a pawl part which is bent toward the other side in the rotation center axial line direction at a tip end part of the arm part so as to enter to the recessed part.

8. The motor according to claim 6 , wherein the engaging part comprises:
a first engaging protruded part which is abutted with an end part of the terminal block facing a rotation center axial line direction of the rotation shaft; and
a second engaging protruded part which is abutted with an end part of the terminal block facing a circumferential direction.

9. The motor according to claim 3 , wherein
the terminal part comprises a terminal block which is protruded to an outer side in a radial direction, and
the cover part comprises an engaging part which is engaged with the terminal block.

10. The motor according to claim 9 , wherein
the terminal block comprises a recessed part which is opened toward one side in a rotation center axial line direction of the rotation shaft on an inner side in the radial direction, the recessed part being provided in a part of the terminal block in a circumferential direction of the motor main body, and
the engaging part comprises:
an arm part which is overlapped with an end part on one side in the rotation center axial line direction of the terminal block, and
a pawl part which is bent toward the other side in the rotation center axial line direction at a tip end part of the arm part so as to enter to the recessed part.

11. The motor according to claim 9 , wherein the engaging part comprises:
a first engaging protruded part which is abutted with an end part of the terminal block facing a rotation center axial line direction of the rotation shaft; and
a second engaging protruded part which is abutted with an end part of the terminal block facing a circumferential direction.

12. The motor according to claim 1 , wherein the cover part comprises an abutting part which is abutted with the side face of the motor main body.

13. The motor according to claim 1 , wherein the terminal cover holds a wiring board which supports a connector electrically connected with the terminals.

14. The motor according to claim 1 , wherein
the terminal part comprises a terminal block which is protruded to an outer side in a radial direction, and
the cover part comprises an engaging part which is engaged with the terminal block.

15. The motor according to claim 14 , wherein
the terminal block comprises a recessed part which is opened toward one side in a rotation center axial line direction of the rotation shaft on an inner side in the radial direction, the recessed part being provided in a part of the terminal block in a circumferential direction of the motor main body, and
the engaging part comprises:
an arm part which is overlapped with an end part on one side in the rotation center axial line direction of the terminal block, and
a pawl part which is bent toward the other side in the rotation center axial line direction at a tip end part of the arm part so as to enter to the recessed part.

16. The motor according to claim 14 , wherein the engaging part comprises:
a first engaging protruded part which is abutted with an end part of the terminal block facing a rotation center axial line direction of the rotation shaft; and
a second engaging protruded part which is abutted with an end part of the terminal block facing a circumferential direction.

Assignees

• Denso Corp
• Nidec Sankyo Corp

Inventors

• Yamaoka Mamoru

Classifications

• H02K5/08

  Insulating casings · CPC title

• H02K3/525

  Annular coils, e.g. for cores of the claw-pole type · CPC title

• H02K37/14

  with magnets rotating within the armatures · CPC title

• H02K5/161

  radially supporting the rotary shaft at both ends of the rotor (H02K5/165, H02K5/167, H02K5/173 take precedence) · CPC title

• H02K7/08

  Structural association with bearings · CPC title