Electrical terminal with annular section

• US 4,983,133 A
• Filed: 05/31/1989
• Issued: 01/08/1991
• Est. Priority Date: 05/31/1989
• Status: Expired due to Term

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Wise, James H., Van Scyoc, William C.
• Primary Examiner(s): Bradley, Paula A.
• Application Number:
  US07/359,240
• Time in Patent Office: 587 Days
• Field of Search: 439/860, 439/868, 439/883, 439/877
• US Class Current: 439/860
• CPC Class Codes: H01R 11/12 End pieces terminating in an eye, hook, or fork

Abstract

An electrical terminal member 10 adapted to reduce resistance at a contact interface between two electrical articles comprises first and second connecting portions 12,48 respectively. First portion 12 has an annular section 14 having a fastener receiving aperture 16 extending therethrough, an inner edge 22 adjacent the fastener receiving aperture 16 and an outer edge 28 extending circumferentially around the annular section 14. Annular section 14 further includes a plurality of slots 26 spaced therearound, the slots 26 defining therebetween respective spring sections 32 in an annular array. Each spring section includes respective protrusion 34 extending from a major surface thereof, each protrusion 34 having a crest portion 36. Crest portions 36 are disposed substantially in a common plane and define a contact interface for electrical engagement with a common conductive surface 38 of the first electrical article 60. An opposed major surface as an array of surface portions engageable by means securing first portion 12 of terminal member 10 to a said first electrical article 60. A plurality of electrical paths in parallel are established between the first and second electrical articles upon terminal 10 being connected to first and second electrical articles thereby minimizing the electrical resistance at the contact interface.

Claims

1. An improved electrical terminal suitable for use in connecting a first electrical article to a second electrical article comprising:

first and second connecting portions at opposed ends of a terminal member for electrically engaging first and second electrical articles respectively;

said first connecting portion comprising an annular section having a centrally disposed fastener receiving aperture extending therethrough from a first major surface to an opposed second major surface, said annular section having an inner edge adjacent said fastener receiving aperture and an outer edge extending circumferentially therearound;

said annular section further including a plurality of slots spaced therearound each extending from at least one integral strap section along one of said inner edge and said outer edge, said slots defining therebetween respective spring sections in an annular array, each of said spring sections at least including a respective protrusion extending outwardly from said first major surface, each said respective protrusion having a crest portion, all of said respective crest portions being disposed substantially in a common plane and defining an array of first contact surfaces comprising a contact interface for electrical engagement with a common conductive surface of said first electrical article upon being fastened thereto by fastening means; and

said second major surface at least including an array of surface portions engagable by a biasing means held thereagainst by said fastening means securing said first connecting portion of said first terminal member to said first electrical article, thereby compressing said spring sections and establishing contact normal force between said first electrical article and said first contact surfaces;

whereby

a plurality of electrical paths in parallel are generated between said first electrical article and said second electrical article upon said terminal being connected to said first and second electrical articles and biasedly held therebetween, thereby minimizing the electrical resistance at the contact interface.

2. An electrical assembly comprising first and second electrical articles electrically interconnected by means of the electrical terminal of claim 1.

3. The electrical terminal of claim 1 wherein said spring sections of said annular section extend radially outwardly from said inner strap section.

4. The improved electrical terminal of claim 1 further including a second integral section along the other of said inner and said outer edge of said annular section.

5. The electrical terminal of claim 4 wherein said spring sections of said annular section extend radially outwardly from said inner strap section.

6. The electrical terminal of claim 4 wherein said spring sections extend along a selected distance around the annular circumference of said annular section.

7. An electrical assembly comprising:

a first electrical article having a conductive surface thereon;

a second electrical article; and

an electrical terminal having first and second portions at opposed ends of a terminal member for electrically engaging first and second electrical articles respectively;

said first connecting portion comprising an annular section having a centrally disposed fastener receiving aperture extending therethrough from a first major surface to an opposed second major surface, said annular section having an inner edge adjacent said fastener receiving aperture and an outer edge extending circumferentially therearound;

said annular section further including a plurality of slots spaced therearound each extending from at least one integral strap section along one of said inner edge and said outer edge, said slots defining therebetween respective spring sections in an annular array, each of said spring sections at least including a respective protrusion extending outwardly from said first major surface, each said respective protrusion having a crest portion, all of said respective crest portions being disposed substantially in a common plane and defining an array of first contact surfaces comprising a contact interface for electrical engagement with a common conductive surface of said first electrical article upon being fastened thereto by fastening means; and

said second major surface at least including an array of surface portions engageable by a biasing means held thereagainst by said fastening means securing said first connecting portion of said first terminal member to said first electrical article, thereby compressing said spring sections and establishing contact normal force between said first electrical article and said first contact surfaces;

whereby

a plurality of electrical paths in parallel are generated between said first electrical article and said second electrical article upon said terminal being connected to said first and second electrical articles and biasedly held therebetween, thereby minimizing the electrical resistance at the contact interface.

8. The electrical assembly of claim 7 wherein said spring sections of said annular section extend radially outwardly from said inner strap section.

9. The electrical assembly of claim 7 wherein said first electrical article is a circuit board.

10. The electrical assembly of claim 7 wherein said first electrical article is a metal member.

11. The electrical assembly of claim 7 wherein said annular section of said first connecting portion further includes a second integral section along the other of said inner and said outer edge.

12. The electrical assembly of claim 11 wherein said spring sections of said annular section extend radially outwardly from said inner strap section.

13. The electrical assembly of claim 11 wherein said spring sections extend along a selected distance around the annular circumference of said annular section.

14. The electrical assembly of claim 11 wherein said first electrical article is a circuit board.

15. The electrical assembly of claim 11 wherein said first electrical article is a metal member.