Female electrical contact with stop for resilient contact

• US 5,562,501 A
• Filed: 11/18/1994
• Issued: 10/08/1996
• Est. Priority Date: 11/30/1993
• Status: Expired due to Fees

• Current Assignee: The Whitaker Corporation (Meggitt PLC)
• Original Assignee: The Whitaker Corporation (Meggitt PLC)
• Inventors: Kinoshita, Yoshiji, Kitamura, Hiroshi
• Primary Examiner(s): PIRLOT, DAVID
• Application Number:
  US08/342,189
• Time in Patent Office: 690 Days
• Field of Search: 439/842, 439/843, 439/851-856, 439/861, 439/862, 439/839, 439/849, 439/850
• US Class Current: 439/852
• CPC Class Codes: H01R 13/113 co-operating with pins or blades having a rectangular transverse section

Abstract

An electrical contact 1 is disclosed which eliminates the possibility of harmful deformations in a bent section of a resilient contacting strip 5 which is bent back from the front portion of a base section 2 of a female contact, even if it experiences a direct impact from a foreign object. Cut-outs 8 are made in the left and fight side walls 3 rising from the sides of the base section 2 of the female contact 1. On the left and right sides of the resilient contacting strip 5, in the vicinity of the bent section 53, protrusions 9 are made which face the left and right side walls 3. The spacing between the cut-outs 8 and protrusions 9 is selected in such a way that they make possible the movement of the resilient contacting strip 5 within allowed limits, but prevent any movement of the protrusions 9 beyond the permitted distance and direction when a foreign object makes a direct impact to the bent section 53.

Claims

1. A female electrical contact for electrically engaging a male electrical contact, the female contact comprising a base section with side walls extending upwardly from both sides of said base section, and a resilient contacting strip extending rearward from the front of said base section and having a bent section integral with the front of said base section, said resilient contacting strip comprises an extension of said base section for making electrical contact with a male contact inserted into said female contact along the upper surface of said resilient contacting strip, said female electrical contact being characterized by:

at least one protrusion extending between said resilient contacting strip and an adjacent side wall, said protrusion engaging a surface located below said resilient contacting surface upper surface to prevent deflection of said resilient contacting strip beyond the limit of elastic deformation and

at least one protrusion extends from said resilient contact strip through a cut-out, the lower edge of said cut-out comprising said surface located below said resilient contacting strip upper surface.

2. The female contact of claim 1 wherein the free end of said resilient contacting strip is in contact with said base section prior to insertion of said male contact into engagement with said female contact.

3. The female contact of claim 1 wherein said cut out includes an upper edge, said protrusion engaging said upper edge before deflection of said resilient contacting strip in the opposite direction beyond the limit of elastic deformation.

4. The female contact of claim 1 wherein said protrusion and said surface located below said resilient contacting strip upper surface are located in the vicinity of said bent section adjacent the front of said resilient contacting strip and the front of said base section.

5. The female contact of claim 1 wherein said protrusion extends from said side wall and said surface below said resilient contacting strip upper surface comprises said resilient contacting strip lower surface.

6. The female contact of claim 1 wherein a first protrusion extends from said resilient contacting strip through a cut-out in said side wall adjacent the front of said resilient contacting strip and a second protrusion, adjacent the midsection of said resilient contact strip, is punched inwardly from said at least one of said side walls to form a projection below said resilient contacting strip.

7. A female electrical contact for electrically engaging a male electrical contact, the female contact comprising a base section with side walls extending upwardly from both sides of said base section, and a resilient contacting strip extending rearward from the front of said base section and having a bent section adjacent the front of said base section, said resilient contacting strip extending upward relative to said base section to make electrical contact with a male contact inserted into said female contact along the upper surface of said resilient contacting strip, said female electrical contact being characterized by:

at least one protrusion extending between said resilient contacting strip and an adjacent side wall, said protrusion engaging a surface located below said resilient contacting surface upper surface to prevent deflection of said resilient contacting strip beyond the limit of elastic deformation; and

a first protrusion extends from said resilient contacting strip through a cut-out in said side wall adjacent the front of said resilient contacting strip and a second protrusion, adjacent the midsection of said resilient contact strip, is punched inwardly from said at least one of said side walls to form a projection below said resilient contacting strip.

8. A receptacle contact for use in an electrical system, said contact comprising:

a receptacle section having a cavity for receiving a further contact therein;

a deflectable beam disposed in said cavity, said beam comprises a pair of spring means located at opposed locations of said beam for generating biasing forces at the opposed locations of said beam as said further contact is inserted in said cavity and engages said beam, at least one of said spring means is integral with said receptacle section.

9. The receptacle contact of claim 8, wherein said pair of spring means comprises a pair of opposed arcuate bends formed in said beam for generating said biasing forces.

10. The receptacle contact of claim 8, wherein said beam comprises an offset section axially between said spring means.

11. The receptacle contact of claim 8, wherein one of said spring means is disposed for sliding contact with a surface of said cavity as said further contact is inserted into said cavity.

12. The receptacle contact of claim 8, wherein said beam comprises an anti-stubbing section and a deflection limiting section which both engage said receptacle section.

13. The receptacle contact of claim 8, wherein said receptacle section includes a mating face, said mating face includes an anti-stubbing section for engaging an anti-stubbing section on said beam for regulating movement of said beam in said cavity.

14. The receptacle contact of claim 8, wherein said beam comprises two axially separate beam deflection-limiting sections between said spring means for limiting movement of said beam in said cavity at axially separate locations along said cavity.

15. The receptacle contact of claim 14, wherein one of said sections comprises a projection.

16. The receptacle contact of claim 14, wherein one of said sections comprises a projection formed on said receptacle section.

17. A receptacle contact for use in an electrical system, said contact comprising:

a receptacle section having a cavity for receiving a further contact therein;

a deflectable beam disposed in said cavity, said beam comprises spring means for generating biasing forces as said further contact is inserted in said cavity and engages said beam; and

said receptacle section includes a mating face end, said mating face includes at least one anti-stubbing section which cooperates with an anti-stubbing section of said beam for delimiting the movement of a portion of said beam in said cavity in cooperation with said spring means for preventing contact stubbing.

18. The receptacle contact of claim 17, wherein said receptacle anti-stubbing section comprises a recess.

19. The receptacle contact of claim 17, wherein said beam anti-stubbing section comprises a projection.