IDC termination having means to adapt to various conductor sizes

• US 4,533,191 A
• Filed: 11/21/1983
• Issued: 08/06/1985
• Est. Priority Date: 11/21/1983
• Status: Expired due to Fees

• Current Assignee: Burndy Corporation (Amphenol Corporation)
• Original Assignee: Burndy Corporation (Amphenol Corporation)
• Inventors: Blackwood, Harry P.
• Primary Examiner(s): Weidenfeld, Gil
• Assistant Examiner(s): Bishop, Steven C.
• Application Number:
  US06/553,906
• Time in Patent Office: 624 Days
• Field of Search: 339/97 R, 339/97 P, 339/98, 339/99 R, 339/31 R, 339/96, 339/97 C, 339/177 R, 339/177 E, 339/143 R, 339/223 R, 29/831, 29/832, 29/837-840, 29/857, 29/861, 29/865-867
• US Class Current: 439/174
• CPC Class Codes: H01R 12/58 terminals for insertion into holes
• CPC Class Codes: H01R 4/2416 the contact members having insulation-cutting edges, e.g. of tuning fork type
• CPC Class Codes: H01R 4/2429 mounted in an insulating base
• CPC Class Codes: H01R 9/05 for coaxial cables
• CPC Class Codes: Y10T 29/4914 with deforming of lead or terminal
• CPC Class Codes: Y10T 29/4919 Through insulation

Abstract

An insulation displacement connector contact and process for electrically contacting a conductor by displacement of an insulating layer. The contact comprises a member including a slot having a desired width. The slot is defined by opposing legs of the member and a non-linear deformable web connecting the legs. By deforming the web it is possible to change the desired width of the slot to thereby adapt the contact to various conductor sizes. An electrical connector preferably adapted for terminating a coaxial cable on a printed circuit board employs such contacts.

Claims

1. An insulation displacement connector contact for electrically contacting a conductor by displacement of an insulating layer, said contact comprising a member including a slot having a desired width, said slot being defined by opposing legs of said member and a non-linear deformable web connecting said legs, wherein by deforming said web, it is possible to change said desired width of said slot to thereby adapt said contact to various conductor sizes and prongs supported by each of said legs at opposing sides of said slot for stabilizing the electrical connection between the contact and a shield of a coaxial cable by being adapted to be positioned within said shield.

2. A contact as in claim 1 wherein said deformable web has a curved shape.

3. A contact as in claim 1 wherein said contact further includes a pin portion integral therewith adapted to be inserted in a circuit board.

4. A connector for a coaxial cable, said cable comprising at least one central conductor defining a cable axis;

at least one surrounding conductive shield element;

a first insulating layer arranged between said shield element and said conductor; and

an outer insulating jacket arranged about said shield element;

said connector comprising two independent electrical contacts for simultaneously establishing electrical connections to said central conductor and said conductive shield including;

a first insulating displacement contact, said first contact comprising a member including a slot having a desired width said slot being defined by opposing legs of said member and a non-linear deformable web connecting said legs, wherein by deforming said web, it is possible to change said desired width of said slot to thereby adapt said first contact to various conductor sizes, for electrically contacting said shield element by displacement of said outer insulating jacket and prongs supported by each of said legs at opposing sides of said slot for stabilizing the electrical connection between said first contact and said shield element by being adapted to be positioned within said shield element;

a second insulation displacement contact, said second contact comprising a member including a slot having a desired width said slot being defined by opposing legs of said member and a non-linear deformable web connecting said leg, wherein by deforming said web, it is possible to change said desired width of said slot to thereby adapt said second contact to various conductor sizes, for electrically contacting said central conductor by displacement of said insulating layer; and

contact support means comprising a base member for supporting said first and second contacts, said contacts being arranged on said base member along a contact axis with said second contact following said first contact and being electrically isolated therefrom, whereby when said cable is connected to said contacts, said contact axis corresponds to said cable axis.

5. A connector as in claim 4 wherein said first contact comprises said member including a first said slot wherein said web has been deformed a desired amount to provide a first width;

and wherein said second contact comprises said member having a second said slot wherein said web has been deformed to provide a second width narrower than said first width and wherein said slots are arranged along said contact axis, whereby said cable is adapted to be pressed into said slots.

6. A connector as in claim 5 wherein said contacts comprise metal blade members further including pin portions for connection to a circuit board.

7. A connector as in claim 6 further including a cover member and means for locking said cover member to said base member.

8. A connector as in claim 7 wherein said cover member is hinged to said base member to pivot between an open position for inserting said coaxial cable and a closed position for locking said coaxial cable in place and wherein said cover member includes anvil portions for engaging said cable when said cover member is closed.

9. A connector as in claim 8 wherein said first contact and said second contact comprise a contact set for a coaxial cable and wherein said connector includes a plurality of said contact sets.

10. A process for terminating a coaxial cable, said cable comprising at least one central conductor defining a cable axis;

at least one surrounding conductive shield element;

a first insulating layer arranged between said shield and said conductor; and

an outer insulating jacket arranged about said shield element;

said process comprising;

providing an electrical connector including a first contact for electrically contacting said shield element by displacement of said insulating jacket and a second contact for electrically contacting said central conductor by displacement of said insulation layer and a

contact support means comprising a base member for supporting said first and second contacts, said contacts being arranged on said base member along a contact axis with said second contact following said first contact and being electrically isolated therefrom;

stripping away a short portion of said outer insulating jacket and said shield element from an end portion of said coaxial cable;

inserting said end portion of said coaxial cable into said second contact so that said insulating layer is displaced and said contact is in intimate electrical contact with each of said central conductors;

inserting an unstripped portion of said cable into said first contact so that said insulating jacket is displaced by said first contact to make intimate electrical contact with said shield; and

stabilizing the electrical connection between said first contact and said shield element by providing first and second prongs electrically connected to and supported by said legs of said first contact and inserting said prongs into said shield element as said cable is inserted into said first contact.

11. A process as in claim 10 wherein said shield element comprises a braided shield element.

12. A process as in claim 11 further including the step of locking said coaxial cable into contact with said first and second contacts.

13. A process as in claim 12 further including the step of connecting said electrical connector to a printed circuit board.

14. A connector for a coaxial cable, said cable comprising at least one central conductor defining a cable axis at least one surrounding conductive shield element;

a first insulating layer arranged between said shield element and said conductor; and

an outer insulating jacket arranged about said shield element;

said connector comprising;

a first insulating displacement contact, said contact comprising a member including a slot having a desired width said slot being defined by opposing legs of said member and a non-linear deformable web connecting said legs, wherein by deforming said web, it is possible to change said desired width of said slot to thereby adapt said contact to various conductor sizes, for electrically contacting said shield element by displacement of said outer insulation jacket;

a second insulation displacement contact, said contact comprising a member including a slot having a desired width said slot being defined by opposing legs of said member and a non-linear deformable web connecting said legs, wherein by deforming said web, it is possible to change said desired width of said slot to thereby adapt said contact to various conductor sizes, for electrically contacting said central conductor by displacement of said insulating layer;

said first contact comprises said member including a first slot wherein said web has been deformed a desired amount to provide a first width; and

wherein said second contact comprises said member having a second slot wherein said web has been deformed to provide a second width narrower than said first width and wherein said slots are arranged along said contact axis, whereby said cable is adapted to be pressed into said slots;

said contacts comprising metal blade members further including pin portions for connection to a circuit board; and

contact support means comprising a base member for supporting said first and second contacts, said contacts being arranged on said base member along a contact axis with said second contact following said first contact and being electrically isolated therefrom, whereby when said cable is connected to said contacts, said contact axis corresponds to said cable axis, and including a cover member and means for locking said cover member to said base member, said cover member being hinged to said base member to pivot between an open position for inserting said coaxial cable and a closed position for locking said coaxial cable in place and wherein said cover member includes anvil portions for engaging said cable when said cover member is closed.

15. A connector as in claim 14 wherein said first contact and said second contact comprise a contact set for a coaxial cable and wherein said connector includes a plurality of said contact sets.