Automatic power disconnect method

Patent metadata

Field	Value
Publication number	US-9930788-B2
Application number	US-201615202226-A
Country	US
Kind code	B2
Filing date	Jul 5, 2016
Priority date	Dec 29, 2014
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

Coupling an electrical connector to a printed circuit board (PCB) involves disposing forms of conductive bonding agent on the PCB, pressing spring-loaded power pins of an electrical connector towards a surface of the PCB, heating the forms of conductive bonding agent, thereby at least partially melting the forms, pressing the spring-loaded power pins into the melted forms of conductive bonding agent, and holding the power pins in the forms until the forms have cooled enough to form a bond that holds the power pins, thereby forming an electrical connection between the one or more pins and the PCB. The spring-loaded power pins are configured to automatically lift away from the surface of the PCB when the bond is weakened.

First claim

What is claimed is:

1. A method of coupling an electrical connector to a printed circuit board (PCB), the method comprising:
securing at least a portion of a housing of an electrical connector to a printed circuit board (PCB), the electrical connector comprising one or more spring-loaded power pins;
disposing one or more forms of conductive bonding agent on the PCB;
pressing one or more spring-loaded power pins of the electrical connector towards a surface of the PCB;
heating the one or more forms of conductive bonding agent, thereby at least partially melting the one or more forms of conductive bonding agent;
pressing the one or more spring-loaded power pins into the at least partially melted one or more forms of conductive bonding agent; and
holding the one or more spring-loaded power pins in the one or more forms until the one or more forms have cooled enough to form a bond that holds the one or more pins, thereby forming an electrical connection between the one or more pins and the PCB;
wherein the one or more spring-loaded power pins are configured to substantially automatically lift away from the surface of the PCB when the bond is at least partially weakened.

2. The method of claim 1 , further comprising soldering one or more devices to the PCB prior to heating the one or more forms of conductive bonding agent.

3. The method of claim 1 , wherein the one or more spring-loaded power pins are configured such that heating the one or more power pins by applying an electrical current thereto that is greater than a threshold, thereby melting the one or more forms of conductive bonding agent, causes the one or more power pins to automatically lift away from the PCB, thereby at least partially breaking electrical contact between the one or more power pins and the PCB.

4. The method of claim 1 , further comprising disconnecting the one or more power pins from the PCB at least in part by:
heating the one or more power pins by applying an electrical current thereto that is greater than a threshold; and
melting the one or more forms of conductive bonding agent using the heated one or more power pins;
wherein the one or more power pins are configured to automatically lift away from the PCB when the one or more forms are melted, thereby at least partially breaking electrical contact between the one or more power pins and the PCB.

5. The method of claim 1 , further comprising disconnecting the one or more power pins from the PCB at least in part by melting the one or more power pins by applying an electrical current thereto that is greater than a threshold, thereby at least partially breaking electrical contact between the one or more power pins and the PCB.

6. The method of claim 1 , further comprising bending the one or more power pins to provide spring-loading thereof prior to said pressing.

7. The method of claim 6 , wherein said bending comprises forming a first bend in each of the one or more power pins.

8. The method of claim 7 , wherein said bending further comprises forming a second bend in each of the one or more power pins.

9. The method of claim 1 , wherein the conductive bonding agent comprises low-fusion solder having a melting point below approximately 180° C.

10. A method of coupling a power pin to a printed circuit board (PCB), the method comprising:
disposing a form of conductive bonding agent on a PCB;
pressing a spring-loaded power pin towards a surface of the PCB;
heating the form of conductive bonding agent, thereby at least partially melting the form of conductive bonding agent;
pressing the spring-loaded power pin into the at least partially melted form of conductive bonding agent; and
holding the spring-loaded power pin in the form of conductive bonding agent until the form of conductive bonding agent has cooled enough to form a bond that holds the spring-loaded power pin, thereby forming an electrical connection between the spring-loaded power pin and the PCB;
wherein the spring-loaded power pin is configured to substantially automatically lift away from the surface of the PCB when the bond is at least partially weakened.

11. The method of claim 10 , further comprising soldering one or more devices to the PCB prior to heating the form of conductive bonding agent.

12. The method of claim 10 , wherein the spring-loaded power pin is configured such that heating the spring-loaded power pin by applying an electrical current thereto that is greater than a threshold, thereby melting the form of conductive bonding agent, causes the spring-loaded power pin to automatically lift away from the PCB, thereby at least partially breaking the electrical connection between the spring-loaded power pin and the PCB.

13. The method of claim 10 , further comprising disconnecting the spring-loaded power pin from the PCB at least in part by:
heating the spring-loaded power pin by applying an electrical current thereto that is greater than a threshold; and
melting the form of conductive bonding agent using the heated spring-loaded power pin;
wherein the spring-loaded power pin is configured to automatically lift away from the PCB when the form of conductive bonding agent is melted, thereby at least partially breaking the electrical connection between the spring-loaded power pin and the PCB.

14. The method of claim 10 , further comprising disconnecting the spring-loaded power pin from the PCB at least in part by melting the spring-loaded power pin by applying an electrical current thereto that is greater than a threshold, thereby at least partially breaking the electrical connection between the spring-loaded power pin and the PCB.

15. The method of claim 10 , further comprising bending the spring-loaded power pin to provide spring-loading thereof prior to said pressing.

16. The method of claim 15 , wherein said bending comprises forming a first bend in the spring-loaded power pin.

17. The method of claim 16 , wherein said bending further comprises forming a second bend in the spring-loaded power pin.

18. The method of claim 10 , wherein the conductive bonding agent comprises low-fusion solder having a melting point below approximately 180° C.

Assignees

• Western Digital Tech Inc

Inventors

• Rice Alan P
• Pratama Andre
• Wilson Jeffrey Alan
• Felfeli Firouz

Classifications

• H01R4/027

  comprising means for positioning or holding the parts to be soldered or welded · CPC title

• H05K1/0263

  High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board (H05K1/0293 takes precedence) · CPC title

• H01R12/722

  coupling devices mounted on the edge of the printed circuits · CPC title

• H05K3/3405 Primary

  Edge mounted components, e.g. terminals · CPC title

• H01R43/205

  with a panel or printed circuit board · CPC title