ROTOR ASSEMBLY WIRE SUPPORT

• US 20110133579A1
• Filed: 12/07/2009
• Published: 06/09/2011
• Est. Priority Date: 12/07/2009
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Vanderzyden, Henry R.
• Granted Patent: US 8,339,011 B2
• Time in Patent Office: Days
• US Class Current: 310/43
• CPC Class Codes: H02K 1/24 Rotor cores with salient poles ; Variable reluctance rotors
• CPC Class Codes: H02K 1/28 Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
• CPC Class Codes: H02K 1/325 between salient poles
• CPC Class Codes: H02K 3/527 applicable to rotors only
• CPC Class Codes: Y10T 29/49012 Rotor

Abstract

A rotor assembly for an electromechanical device includes a molded wire support. The wire support has a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft. The body includes a wall about the hole extending to the first side. At least one end turn support extends outwardly from the wall and is configured to support wires. A molded pocket extends into the wall from the second side without penetrating through to the first side.

Claims

1. A wire support for a rotor assembly comprising:

a body including a first side spaced from a second side and a hole extending through the sides and configured to receive a shaft, the body including a wall about the hole extending to the first side, at least one end turn support extending outwardly from the wall and configured to support wires, and a pocket extending into the wall from the second side without penetrating through to the first side.

2. The wire support according to claim 1, wherein the wall provides at least one lobe between adjoining end turn supports, the pocket extending into the lobe.

3. The wire support according to claim 2, comprising a first and second pocket in the lobe separated by an intermediate wall extending radially between inner and outer walls to provide the first and second pockets.

4. The wire support according to claim 3, wherein an outer perimeter and the hole bound the wall, and an orifice extends through the intermediate wall from the outer perimeter to the hole.

5. The wire support according to claim 4, wherein the hole includes an annulus to which the orifice extends.

6. The wire support according to claim 3, wherein the inner wall includes a thickness of approximately 0.150 inch.

7. The wire support according to claim 3, wherein the outer wall includes a thickness of approximately 0.200 inch.

8. The wire support according to claim 3, wherein the intermediate wall includes a thickness of approximately 0.200 inch.

9. The wire support according to claim 1, wherein the pocket includes a base portion and an inner portion further recessed into the body from the second side than the base portion, wherein the inner portion includes a smaller cross-section than the base portion.

10. The wire support according to claim 9, wherein a hole extends axially from the first side in overlapping relation with the base portion, the inner portion extending in the axial direction near the hole.

11. The wire support according to claim 9, wherein first and second pockets are arranged symmetrically relative to one another in the lobe.

12. The wire support according to claim 9, wherein the base portion is generally quadrangular in shape and the inner portion is generally triangular in shape.

13. The wire support according to claim 9, wherein the base portion is generally triangular in shape and the inner portion is generally quadrangular in shape.

14. The wire support according to claim 1, wherein the pocket includes radii approximate 0.035-0.090 inch.

15. A rotor assembly comprising:

a shaft having opposing ends;

first and second wire supports mounted on the end opposite one another, the first and second wire supports each providing multiple end turn supports, the first and second wire supports each having a body including a first side spaced from a second side and a hole extending through the sides and receiving the shaft, each body including a wall about the hole extending to the first side, at least one end turn extending outwardly from the wall and configured to support wires, and a pocket extending into the wall from the second side without penetrating through to the first side; and

wire windings wrapped around the end turn supports of the first and second wire supports and including a wire end secured to a first side of the first wire support.

16. A method of assembling a rotor assembly comprising:

providing a first body including a first side spaced from a second side, a wall extending to the first side, at least one end turn support extending outwardly from the wall, and a molded pocket extending into the wall from the second side;

mounting the first body onto a shaft; and

wrapping a wire about the end turn support to produce a rotor assembly.

17. The method according to claim 16, comprising the step of mounting a second body onto the shaft, the second body including a second end turn support, the wrapping step including wrapping the wire about the end turn supports of the first and second bodies.

18. The method according to claim 17, wherein the pocket extends into the wall without penetrating through to the first side.

19. The method according to claim 17, wherein the second body including a third side spaced from a fourth side, a second wall extending to the third side, and a second molded pocket extending into the second wall from the fourth side, the second body different than the first body.

20. The method according to claim 16, comprising the step of disposing the rotor assembly within a stator.