Insulated stator with wire routing element

• US 20060091739A1
• Filed: 10/29/2004
• Published: 05/04/2006
• Est. Priority Date: 10/29/2004
• Status: Active Grant

• Current Assignee: Nidec Motor Corporation (Nidec Corporation)
• Original Assignee: Emerson Electric Company
• Inventors: Hilton, Daniel E., Horst, Gary E., Sheeran, Kent A.
• Granted Patent: US 7,342,334 B2
• Time in Patent Office: Days
• US Class Current: 310/45
• CPC Class Codes: H02K 1/04 characterised by the material used for insulating the magnetic circuit or parts thereof
• CPC Class Codes: H02K 2203/06 Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations
• CPC Class Codes: H02K 3/32 Windings characterised by the shape, form or construction of the insulation
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

A stator for an electric machine includes stator teeth with powder coat insulation covering a portion of each tooth. An end cap with a routing element is positioned on one side of the stator. Wire extends around and contacts the powder coat insulation on the stator teeth and is routed via the routing element.

Claims

1. A stator for an electric machine, the stator comprising, stator teeth, powder coat insulation covering a portion of each tooth, an end cap positioned on one side of the stator, the end cap including a routing element, and wire extending around and contacting said powder coat insulation on the stator teeth and routed via the routing element.

2. The stator of claim 1 wherein each stator tooth includes tooth walls, the tooth walls of adjacent teeth defining slots and wherein the powder coat insulation covering the tooth walls.

3. The stator of claim 1 wherein the powder coat insulation covers the first side and a second side of the stator.

4. The stator of claim 1 wherein the end cap is a first end cap, the stator further comprising a second end cap coupled to a second side of the stator.

5. The stator of claim 4 wherein the second end cap is substantially identical to the first end cap.

6. The stator of claim 1 wherein the end cap includes a non-conductive mounting portion configured for mounting the stator in an electric machine.

7. The stator of claim 1 wherein the stator is an interior stator.

8. The stator of claim 1 wherein the routing element is at least one of a prong, a channel, and a wire coupling element.

9. The stator of claim 1 wherein the end cap includes a wire coupling element electrically coupled to the wire.

10. An electric machine comprising an outer rotor and an inner stator, the stator including teeth having tooth walls, powder coat insulation covering a portion of each tooth including the tooth walls, an end cap positioned on one side of the stator, the end cap including a wire routing element, and wire extending around and contacting the powder coat insulation on the teeth and routed by the wire routing element.

11. The machine of claim 10 wherein the electric machine is an appliance motor.

12. The machine of claim 10 wherein the end cap is non-conductive.

13. The machine of claim 10 wherein the routing element includes at least one of a prong, a channel, and a wire coupling element.

14. The machine of claim 10 wherein the end cap is a first end cap, further comprising a second end cap coupled to a second side of the stator.

15. A stator for an electric machine, the stator comprising stator teeth, wire extending around each tooth, means for insulating the wire from the stator teeth, and means for routing the wire.

16. The stator of claim 15, further comprising means for electrically terminating the wire.

17. The stator of claim 15, further comprising means for electrically isolating the stator from a stator mounting.

18. The stator of claim 15 wherein the stator is an inner stator.

19. A method of manufacturing a stator having stator teeth, the method comprising powder coating a portion of each stator tooth, positioning an end cap having a routing element to one side of the stator, winding wire around each tooth, said wire contacting the powder coated portion of each tooth, and routing the wire with the routing element.

20. The method of claim 19, further comprising electrically terminating the wire to a wire coupling element of the end cap.

21. The method of claim 20 wherein the end cap is a first end cap, further comprising coupling a second end cap to a second side of the stator.

22. A stator manufactured according to the method of claim 19.