Rotary electric machine

Patent metadata

Field	Value
Publication number	US-10680481-B2
Application number	US-201314758817-A
Country	US
Kind code	B2
Filing date	Feb 27, 2013
Priority date	Feb 27, 2013
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

Insulators are respectively disposed such that longitudinal directions of trunk portions are oriented in a radial direction of teeth, and so as to place bottom surfaces of the trunk portions alongside two axial end surfaces of the teeth, concentrated winding coils are configured by winding conductor wires so as to be wound in multiple layers around the teeth so as to pass through a concave space that is formed by the trunk portions and first and second flange portions at two axial ends of the teeth, the second flange portion is disposed on an end surface of a core back of a stator core, and a temperature detecting element is installed by being inserted into an element insertion aperture that is formed on the second flange portion so as to be able to detect a temperature of a coil end of the concentrated winding coils.

First claim

The invention claimed is:

1. A rotary electric machine comprising:
a stator comprising:
an annular stator core; and
concentrated winding coils that are mounted to respective teeth of said stator core; and
a rotor,
insulators comprising:
a trunk portion; and
first and second flange portions that are linked to two longitudinal ends of an upper surface of said trunk portion,
respectively being disposed such that longitudinal directions of said trunk portions are oriented in a radial direction of said teeth, and so as to place bottom surfaces of said trunk portions alongside two axial end surfaces of said teeth, and
said concentrated winding coils being configured by winding conductor wires so as to be wound in multiple layers around said teeth so as to pass through a concave space that is formed by said trunk portions and said first and second flange portions at two axial ends of said teeth,
wherein:
said second flange portion of said first and second flange portions is disposed on an end surface of a core back of said stator core; and
a temperature detecting element is installed by being inserted into an element insertion aperture that is formed on said second flange portion so as to be able to detect a temperature of a coil outer layer portion of said concentrated winding coils.

2. The rotary electric machine according to claim 1 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

3. The rotary electric machine according to claim 1 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

4. The rotary electric machine according to claim 3 , wherein said resin is an adhesive.

5. The rotary electric machine according to claim 1 , wherein said element insertion aperture is formed on said second flange portion so as to be isolated from said concave space.

6. The rotary electric machine according to claim 5 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

7. The rotary electric machine according to claim 5 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

8. The rotary electric machine according to claim 7 , wherein said resin is an adhesive.

9. The rotary electric machine according to claim 1 , wherein said element insertion aperture is formed on said second flange portion so as to have an aperture in an axial direction.

10. The rotary electric machine according to claim 9 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

11. The rotary electric machine according to claim 9 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

12. The rotary electric machine according to claim 11 , wherein said resin is an adhesive.

13. The rotary electric machine according to claim 9 , wherein said element insertion aperture is formed on said second flange portion so as to be isolated from said concave space.

14. The rotary electric machine according to claim 13 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

15. The rotary electric machine according to claim 13 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

16. The rotary electric machine according to claim 15 , wherein said resin is an adhesive.

17. The rotary electric machine according to claim 1 , wherein said element insertion aperture is formed on said second flange portion so as to have an aperture direction in a radial direction.

18. The rotary electric machine according to claim 17 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

19. The rotary electric machine according to claim 17 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

20. The rotary electric machine according to claim 19 , wherein said resin is an adhesive.

21. The rotary electric machine according to claim 17 , wherein said element insertion aperture is formed on said second flange portion so as to be isolated from said concave space.

22. The rotary electric machine according to claim 21 , wherein:
said element insertion aperture comprises a receiving portion; and
said temperature detecting element comprises an engaging portion that engages in said receiving portion when said temperature detecting element is inserted into said element insertion aperture to prevent dislodging of said temperature detecting element.

23. The rotary electric machine according to claim 21 , wherein a gap between said element insertion aperture and said temperature detecting element is filled with a resin.

24. The rotary electric machine according to claim 23 , wherein said resin is an adhesive.

Assignees

• Hino Tatsuro
• Bessho Tomohiro
• Iwamoto Kazuyuki
• Tsuiki Hironori
• Okamoto Shogo
• Nishikawa Ken
• Inoue Masaya
• Mitsubishi Electric Corp

Inventors

• Hino Tatsuro
• Bessho Tomohiro
• Iwamoto Kazuyuki
• Tsuiki Hironori
• Okamoto Shogo
• Nishikawa Ken
• Inoue Masaya

Classifications

• H02K11/25

  Devices for sensing temperature, or actuated thereby · CPC title

• H02K3/522 Primary

  for generally annular cores with salient poles · CPC title

• H02K1/148

  Sectional cores (H02K1/141 takes precedence) · CPC title

• H02K21/16

  having annular armature cores with salient poles (with homopolar co-operation H02K21/20) · CPC title

• H02K3/345 Primary

  between conductor and core, e.g. slot insulation · CPC title