INTEGRATED ELECTRICAL COMPONENTS OF A WELDING POWER SUPPLY

• US 20140374394A1
• Filed: 06/24/2013
• Published: 12/25/2014
• Est. Priority Date: 06/24/2013
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Sigl, Dennis R.
• Granted Patent: US 9,592,565 B2
• Time in Patent Office: Days
• US Class Current: 219/130.1
• CPC Class Codes: B23K 9/1006 Power supply
• CPC Class Codes: H01L 23/4093 Snap-on arrangements, e.g. clips
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 7/20909 Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

A power supply includes an electrical component having at least one pin extending a first distance from a body portion of the electrical component to a circuit board. The power supply also includes a heat sink coupled to the body portion of the electrical component and extending substantially parallel to the at least one pin for approximately the first distance from the body portion to the circuit board. In one embodiment, the at least one pin of the electrical component is not trimmed during assembly of the power supply. In another embodiment, the power supply includes a heat sink hanging over an edge of the circuit board. Moreover, in certain embodiments, a transformer lead is coupled to a diode using a fastener.

Claims

1. A power supply comprising:

an electrical component having at least one pin extending a first distance from a body portion of the electrical component to a circuit board; and

a heat sink coupled to the body portion of the electrical component and extending substantially parallel to the at least one pin for approximately the first distance from the body portion to the circuit board;

wherein the at least one pin of the electrical component is not trimmed during assembly of the power supply.

2. The power supply of claim 1, wherein the electrical component comprises a semiconductor.

3. The power supply of claim 1, wherein the power supply comprises a welding power supply.

4. The power supply of claim 3, wherein the welding power supply comprises an inverter welding power supply.

5. The power supply of claim 1, wherein the heat sink is configured to be supported by the circuit board.

6. The power supply of claim 1, wherein the circuit board comprises a printed circuit board.

7. A power supply comprising:

a circuit board;

an electrical component coupled to the circuit board; and

a heat sink coupled to the electrical component, wherein the heat sink comprises a first portion extending directly over the circuit board in a direction orthogonal to the circuit board and a second portion that is not directly over the circuit board in the direction orthogonal to the circuit board, and wherein a width of the second portion is larger than a width of the first portion.

8. The power supply of claim 7, wherein the heat sink is disposed in an air flow path to receive air flow from a fan.

9. The power supply of claim 8, wherein the heat sink comprises a first side and a second side, and the first and second sides of the heat sink receive the air flow from the fan.

10. The power supply of claim 8, wherein at least four sides of the heat sink receive the air flow from the fan.

11. The power supply of claim 7, wherein the heat sink is configured to be supported by the circuit board.

12. A power supply comprising:

a chassis configured to support electrical components;

a transformer having a first substantially flat lead;

a first diode having a first lead; and

a first fastener coupling the first substantially flat lead of the transformer and the first lead of the first diode to the chassis, wherein the first fastener is configured to enable conductivity between the first substantially flat lead of the transformer and the first lead of the first diode.

13. The power supply of claim 12, wherein the transformer comprises a second substantially flat lead.

14. The power supply of claim 13, comprising a second diode having a second lead, and a second fastener coupling the second substantially flat lead of the transformer and the second lead of the second diode to the chassis, wherein the second fastener is configured to enable conductivity between the second substantially flat lead of the transformer and the second lead of the second diode.

15. The power supply of claim 12, wherein the chassis comprises a threaded opening, and the first fastener extends through the first substantially flat lead of the transformer, through the first lead of the first diode, and into the threaded opening.

16. The power supply of claim 15, wherein the chassis comprises a substantially plastic chassis, and the threaded opening comprises a metallic insert disposed within the substantially plastic chassis.

17. The power supply of claim 12, wherein the first diode is coupled to the chassis in a position to align the first lead of the first diode with the first substantially flat lead of the transformer.

18. The power supply of claim 12, wherein at least a portion of the first substantially flat lead of the transformer comprises an insulative coat configured to provide reinforced insulation.

19. The power supply of claim 12, wherein the power supply comprises a welding power supply.

20. The power supply of claim 12, wherein the power supply comprises an inverter power supply.