Canted coil spring power terminal and sequence connection system

• US 7,294,020 B2
• Filed: 02/16/2006
• Issued: 11/13/2007
• Est. Priority Date: 05/25/2005
• Status: Expired due to Fees

• Current Assignee: AEES Incorporated (PKC Group OYJ)
• Original Assignee: Alcoa Fujikura Ltd. (Howmet Aerospace, Inc.)
• Inventors: Zhao, Weiping, Spadoni, Stefano, Bagchi, Ankoor
• Primary Examiner(s): PIZARRO CRESPO, MARCOS D
• Assistant Examiner(s): PIZARRO CRESPO, MARCOS D
• Application Number:
  US11/356,432
• Publication Number:
  US 20060270277A1
• Time in Patent Office: 635 Days
• Field of Search: 439/500, 439/510, 439/513, 439/522, 439/627, 439/840, 439/759, 439/762, 439/841
• US Class Current: 439/627
• CPC Class Codes: H01R 11/28 End pieces consisting of a ferrule or sleeve
• CPC Class Codes: H01R 13/03 characterised by the material, e.g. plating, or coating materials
• CPC Class Codes: H01R 13/187 with spring member in the socket
• CPC Class Codes: H01R 4/184 comprising a U-shaped wire-receiving portion
• CPC Class Codes: H01R 4/188 having an uneven wire-receiving surface to improve the contact
• CPC Class Codes: H01R 43/16 for manufacturing contact members, e.g. by punching and by bending

Abstract

The present invention provides an electrical terminal for electrical connections formed from a metal stamping and including a coil spring interface. Broadly, the inventive electrical terminal includes a female terminal body having at least one opening for receiving an inserting portion of a male terminal body, the female terminal body including a stamped groove positioned about a perimeter of the opening; and a coil spring for providing an electrical interface between the inserting portion of the male terminal body and the female terminal body being positioned in the stamped groove.

Claims

1. A female electrical terminal comprising:

a unitary body having a first end for engaging a pin and a second end for engaging a wire, said first end comprising a folded over portion and a base portion connected through a bend, wherein said folded over portion comprises an overlying groove positioned about a substantially circular overlying opening and said base portion comprises an underlying groove positioned about a substantially circular underlying opening, wherein said, overlying opening is substantially aligned to said underlying opening; and

a coil spring positioned between said overlying and underlying groove.

2. The female terminal of claim 1, wherein said second end having at least one crimpable barrel.

3. The female terminal of claim 1, wherein each of said at least one crimpable barrels engage at least one wire.

4. The female terminal of claim 1, wherein said coil spring is a canted coil spring.

5. The female terminal of claim 1, wherein said second end for engaging said wire is connected to said base portion of said first end.

6. The female terminal of claim 1, wherein said unitary terminal body comprises copper, aluminum, steel or combinations and alloys thereof.

7. The female terminal of claim 2, wherein said at least one crimpable barrel comprises at least one tab each having two or more prongs.

8. A method of forming a female terminal comprising

stamping a unitary blank comprising a first end having at least a first and second opening being separated by a bend portion, a stamped groove formed about a perimeter of each of said first and second opening, and a second end for engaging a wire;

folding said first end at said bend portion to position said first opening aligned to said second opening; and

positioning a coil spring within said at least one stamped groove.

9. The method of claim 8 wherein said unitary female blank is stamped from a metal sheet comprising copper, aluminum, or other metal alloys.

10. The method of claim 8 wherein said second end comprises at least one crimpable barrel.

11. The method of claim 8 wherein said coil spring is inserted into said groove during folding of said first end at said bend portion or following folding of said first end at said bend portion.

12. The method of claim 10 wherein said at least one crimpable barrel comprises at least one tab each having at least two prongs.

13. The method of claim 12 further comprising crimping said at least two prongs to at least one wire.