Battery contact and retention apparatus for printed circuit boards

• US 5,805,423 A
• Filed: 05/17/1996
• Issued: 09/08/1998
• Est. Priority Date: 05/17/1996
• Status: Expired due to Term

• Current Assignee: Lear Automotive Dearborn, Incorporated (Lear Corporation)
• Original Assignee: United Technologies Automotive
• Inventors: Benzie, Thomas P., Wever, Jennifer A., Settles, Steven R.
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): FOSTER, DAVID A
• Application Number:
  US08/650,014
• Time in Patent Office: 844 Days
• Field of Search: 361/760, 361/763, 361/765, 361/807, 361/809, 361/811, 361/767, 361/768, 361/769, 439/627, 439/500, 429/98, 429/100, 429/163
• US Class Current: 361/760
• CPC Class Codes: H01M 50/216 adapted for button or coin cells
• CPC Class Codes: H05K 3/325 by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor adaptations of leads inserted in holes for press-fit connections H05K3/308
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention relates generally to an apparatus for securely retaining a small battery or electric cell on a printed circuit board, and for providing electrical contacts which engage the battery for use in an electronic circuit. The present invention provides an improved mechanical attachment of the battery retention apparatus to the circuit board by means of a plurality of tabs which extend through and engage the printed circuit board. These tabs are separate and apart from the electrical connections to the circuit board.

The apparatus of the present invention provides a lightweight, low-profile, rugged battery retention mechanism capable of withstanding impulse forces. The apparatus is low-cost, easily manufactured, and facilitates easy installation, and is particularly well suited for remote control devices and other hand-held or portable units.

Claims

1. An apparatus for retaining a battery on a circuit board comprising:

(a) a penannular retention member;

(b) a plurality of support tabs extending from said retention member;

(c) a plurality of locking tabs, each one of said locking tabs associated with a single one of said support tabs, wherein said locking tabs extend radially from said support tabs;

(d) an electrical conductor with at least first and second contacts, said first contact adapted for connection to a battery, and said second contact adapted for connection to an electrical circuit.

2. The apparatus for retaining a battery on a circuit board of claim 1, wherein said penannular retention member is a segment of an arcuate semi-circular ring.

3. The apparatus for retaining a battery on a circuit board of claim 1, wherein the ends of said penannular retention member are separated by a distance less than the diameter of said penannular retention member.

4. The apparatus for retaining a battery on a circuit board of claim 3, wherein said penannular retention member is non-rigid.

5. The apparatus for retaining a battery on a circuit board of claim 3, wherein the ends of said penannular retention member are tapered.

6. The apparatus for retaining a battery on a circuit board of claim 1, wherein said support tabs extend substantially axially downward from said retention member.

7. The apparatus for retaining a battery on a circuit board of claim 1, wherein said locking tabs extend radially outward from said support tabs.

8. The apparatus for retaining a battery on a circuit board of claim 1, wherein said locking tabs extend radially inward from said support tabs.

9. The apparatus for retaining a battery on a circuit board of claim 1, wherein said electrical conductor is electrically insulated from the interior surface of said truncated annular retention member.

10. A battery retention apparatus comprising:

(a) a penannular retention member;

(b) at least one support tab extending substantially axially from the bottom of said retention member;

(c) at least one locking tab associated with said at least one support tab, wherein said at least one locking tab extends radially from said at least one support tab;

(d) an electrical conductor with at least first and second conductor contacts, said first conductor contact adapted for connection to a battery, and said second conductor contact for connection to an electrical circuit;

(e) a printed circuit board having at least a first and second electrical circuit contacts, wherein said first circuit contact is adapted for connection to a battery and said second circuit contact is electrically connected to said second conductor contact, and said printed circuit board further having support tab receiving portions which engage said at least one locking tab.

11. The battery retention apparatus of claim 10, wherein said first circuit contact comprises a surface mounted electrical conductor.

12. The battery retention apparatus of claim 10, wherein said penannular retention member is a segment of an arcuate semi-circular ring.

13. The battery retention apparatus of claim 10, wherein the ends of said penannular retention member are separated by a distance less than the diameter of said penannular retention member.

14. The battery retention apparatus of claim 13, wherein the ends of said penannular retention member are tapered.

15. The battery retention apparatus of claim 10, wherein said penannular retention member is non-rigid.

16. The battery retention apparatus of claim 10, wherein said support tabs extend substantially axially downward from said retention member.

17. The battery retention apparatus of claim 10, wherein said locking tabs extend radially outward from said support tabs.

18. The battery retention apparatus of claim 10, wherein said locking tabs extend radially inward from said support tabs.

19. The battery retention apparatus of claim 10, wherein said electrical conductor is electrically insulated from the interior surface of said truncated annular retention member.