Connector and spring assembly for a generator

• US 9,312,742 B2
• Filed: 03/01/2013
• Issued: 04/12/2016
• Est. Priority Date: 03/01/2013
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Original Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Inventors: Grosskopf, Andrew P., Franklin, Mark J.
• Primary Examiner(s): Nguyen, Tran
• Application Number:
  US13/781,875
• Publication Number:
  US 20140246957A1
• Time in Patent Office: 1,138 Days
• Field of Search: 310/64, 310/67.R, 310/68.R, 310/68.D, 310/71, 310/72, 310/75.D, 310/179, 439/397, 439/510, 439/816, 174/91.R, 363/144, 363/145, 29/250.2, 257/726
• US Class Current: 1/1
• CPC Class Codes: F16B 2/20 Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
• CPC Class Codes: H01R 4/48 utilising a spring, clip, or other resilient member H01R4/52 takes precedence
• CPC Class Codes: H02K 11/0094 Structural association with other electrical or electronic devices
• CPC Class Codes: H02K 11/028 Suppressors associated with the rotor
• CPC Class Codes: H02K 11/042 Rectifiers associated with rotating parts, e.g. rotor cores or rotary shafts
• CPC Class Codes: Y10T 403/60 Biased catch or latch

Abstract

An assembly includes a resistor pack, a first spring clip, and a first rigid connector. The resistor pack has a first clip-shaped cavity therein. The first spring clip is disposed within the first clip-shaped cavity and the first connector is abutted by opposing portions of the first spring clip.

Claims

1. An assembly comprising:

a resistor pack having a support housing including a first clip-shaped cavity therein and a suppression resistor mounted thereon;

a first spring clip having an omega shape with first and second curved end portions, the spring clip, including the first and second curved end portions, being disposed within the first clip-shaped cavity; and

a first connector abutted by opposing portions of the first spring clip wherein the connector extends radially outward from the clip; and

a pin, wherein the pin is received by the first curved end portion of the first spring clip.

2. The assembly of claim 1, wherein the first spring clip contacts three locations along a wall of the first clip-shaped cavity.

3. The assembly of claim 1, wherein the first connector has a rigid body and extends into the resistor pack through a passageway of the first clip-shaped cavity.

4. The assembly of claim 1, wherein the first connector includes a widened distal end that is clamped between the first and second curved end portions of the first spring clip.

5. The assembly of claim 1, wherein the resistor pack includes an insulating support housing that surrounds and forms the clip-shaped cavity.

6. The assembly of claim 1, wherein the resistor pack includes a second clip-shaped cavity, and further including:

a second spring clip disposed within the second clip-shaped cavity; and

a second rigid connector abutted by opposing portions of the second spring clip.

7. The assembly of claim 6, the resistor pack further including:

a first pin and a second pin;

a first mounting plate having a circular face and a first connection terminal;

a second mounting plate having a circular face and a second connection terminal; and

a cylindrical suppression resistor that has a first flat surface and a second flat surface opposite the first flat surface, wherein the cylindrical suppression resistor is located between the first mounting plate and the second mounting plate, wherein the first pin is received in the first connection terminal and extends to be received by the first curved end portion of the first spring clip, and wherein the second pin is received in the second connection terminal and extends to be received by a first curved end portion of the second spring clip.

8. The assembly of claim 7, further including:

a power band that fits within the first connection terminal, wherein the power band is configured to receive the first pin.

9. The assembly of claim 1, further including a main field winding with an end turn support disposed adjacent the resistor pack and connected to the first connector, wherein the end turn support includes one or more joints adapted to allow the first connector to shift away from the resistor pack.

15. The assembly of claim 1, wherein each of the first and second curved end portions comprise a closed loop forming a complete ring.

10. A generator comprising:

a rotor shaft having an inner diameter;

a rectifier located within the inner diameter of the rotor shaft;

a resistor pack located axially adjacent to the rectifier and within the inner diameter, wherein the resistor pack has a support housing that includes first and second clip-shaped cavities therein and has a suppression resistor mounted thereon;

a main field winding with an end turn support disposed adjacent the resistor pack;

first and second spring clips, each of the first and second spring clips having first and second curved end portions, wherein the first and second spring clips, including the first and second curved end portions, are disposed within the first and second clip-shaped cavities, respectively; and

first and second rigid connectors, wherein the first connector is abutted by opposing portions of the first spring clip and the second connector is abutted by opposing portion of the second spring clip, and wherein the first and second connectors extend radially outward from the resistor pack to connect to the end turn support.

11. The generator of claim 10, wherein the end turn support includes one or more joints adapted to allow the first connector to shift away from the resistor pack.

12. The generator of claim 10, the resistor pack further including:

a first pin and a second pin;

a first mounting plate having a circular face and a first connection terminal;

a second mounting plate having a circular face and a second connection terminal; and

a cylindrical suppression resistor that has a first flat surface and a second flat surface opposite the first flat surface, wherein the cylindrical suppression resistor is located between the first mounting plate and the second mounting plate, wherein the first pin is received in the first connection terminal and extends to be received by the first curved end portion of the first spring clip, and wherein the second pin is received in the second connection terminal and extends to be received by a first curved end portion of the second spring clip.

16. The generator of claim 10, wherein the first curved end portion of the first spring clip interfaces with a first contact portion of the first clip-shaped cavity and the second curved end portion interfaces with a second contact portion of the first clip-shaped cavity.

13. A spring clip comprising:

first and second closed loop end portions bi-symmetrically arranged and spaced from one another and configured to receive a pin therein, wherein the first and second closed loop end portions are biased toward one another to provide a clamping force;

first and second electrical contact portions, wherein the first electrical contact portion extends from and is disposed inward of the first closed loop end portion, wherein the second electrical contact portion extends from and is disposed inward of the second closed loop end portion such that the first and second electrical contact portions are bi-symmetrically arranged and spaced from one another; and

a curved middle portion connected between the first and second electrical contact portions, wherein the first and second electrical contact portions adjacent the curved middle portion are spaced further apart from one another than the first and second electrical contact portions adjacent the first and second closed loop end portions.

14. The spring clip of claim 13, further comprising a connector, wherein the first and second electrical contact portions contact opposing surfaces of the connector and hold the connector with a clamping force.