Electrical connector having an improved connector shield and a multi-purpose strain relief

• US 6,287,149 B1
• Filed: 05/23/2000
• Issued: 09/11/2001
• Est. Priority Date: 10/30/1997
• Status: Expired due to Term

• Current Assignee: Thomas & Betts International LLC (ABB Limited)
• Original Assignee: Thomas & Betts International Incorporated (ABB Limited)
• Inventors: Elkhatib, Hecham K., Bieberich, Mark, Hammond, Bernard H., Gruno, Laura A.
• Primary Examiner(s): Sircus, Brian
• Assistant Examiner(s): NASRI, JAVAID H
• Application Number:
  US09/577,707
• Time in Patent Office: 476 Days
• Field of Search: 439/608, 439/607, 439/610, 439/404, 439/417, 439/98, 439/460, 439/469, 439/472
• US Class Current: 439/607.41
• CPC Class Codes: H01R 13/506 assembled by snap action of the parts
• CPC Class Codes: H01R 13/5804 comprising a separate cable clamping part H01R13/5841 takes precedence
• CPC Class Codes: H01R 13/5812 the cable clamping being achieved by mounting the separate part on the housing of the coupling device
• CPC Class Codes: H01R 13/5837 specially adapted for accommodating various sized cables H01R13/5825 takes precedence
• CPC Class Codes: H01R 13/6471 by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
• CPC Class Codes: H01R 13/6586 for separating multiple connector modules
• CPC Class Codes: H01R 4/2433 one part of the base being movable to push the cable into the slot

Abstract

An electrical connector having an improved connector shield and a multi-purpose strain relief includes an electrically insulative contact support member having a rearward cable termination end and a plurality of electrical contacts positioned on the support member forward of the termination end. An electrically conductive contact shield housing having an outer and inner walls surrounds the contact support member and extends rearward beyond the electrical contacts to shield both the contacts and the discrete conductors of a multi-conductor cable. The connector includes an electrically conductive strain relief device comprised of mirrored strain relief members which are in electrical communication with the shield housing and the cable ground thereby providing a ground path between the cable ground and the contact shield housing.

Claims

1. An electrical connector for terminating discrete conductors of a multi-conductor cable comprising:

at least one insulative contact support member;

a plurality of electrical contacts supported by the contact support member, each of the contacts having a connecting end and insulation displacement termination end portions for electrical connection with the conductors of one of said cables;

at least one dressing block including receiving openings therein for said conductors, the dressing block guiding and moving the conductors into engagement with insulation displacement termination end portions of said contacts; and

an electrically conductive shield member for supporting therein said at least one contact support member, said shield member comprising at least an outer housing formed of walls which completely surround a portion of said contacts and a cross member formed within and integral with said outer housing, said cross member having a horizontal extent for supporting at least a portion of said contact support member thereon and a vertical extent, said horizontal extent and said vertical extent providing for shielding both horizontally and vertically between at least a portion of two contacts separated by said cross member, said cross member extending a distance rearwardly past the at least one of dressing block to provide shielding between a length of at least two of the discrete conductors of the multi-conductor cable separated by said cross member.

2. The electrical connector as defined in claim 1, wherein the shield member is formed of a die-cast metal.

3. The electrical connector as defined in claim 1, comprising a single contact support member, wherein said contact support member includes a horizontal and a longitudinal slot for receiving said cross member portion of said shield member.

4. The electrical connector as defined in claim 1, wherein said contact end portions comprise insulation displacement contacts and said dressing blocks are snap-fit over the insulation displacement contacts to secure said conductors thereto.

5. The electrical connector as defined in claim 1, further including an insulative connector housing having two connector halves which are snap-fit together to substantially enclose said termination sub-assembly.

6. The electrical connector as defined in claim 1, further comprising a conductive cable strain relief device for securing the cable thereat and the strain relief device being in direct contact with said shield member for providing ground continuity between the cable and the shield member.

7. The electrical connector as defined in claim 6, wherein said cable strain relief device comprises first and second strain relief members, each strain relief member having a pair of legs positioned along opposed edges thereof, each of said legs including an engagement member thereon, said first and second strain relief members defining a bounded opening therebetween and being moveable with respect to each other to reduce the size of said bounded opening for securingly engaging the cable thereat and wherein said shield member includes engagement elements arranged along at least two opposed side walls thereof for mating cooperation with the engagement members of said strain relief members to thereby lockingly engage said first and second strain relief members to said cable.

8. The electrical connector as defined in claim 7, wherein said engagement member on said first and second strain relief members and said engagement elements on said shield member include interengageable teeth for permitting ratchet-type movement therebetween.

9. The electrical connector as defined in claim 7, wherein said shield member includes an upper and a lower wall each having a slot disposed therethrough for receiving each of said strain relief members.

10. The electrical connector as defined in claim 9, wherein said first and second strain relief members are made from an electrically conductive material and wherein at least one of said first and second strain relief members includes at least one raised protrusion which is mechanically forced against an inner wall of said slot of said shield member when said strain relief member is inserted in said slot thereby ensuring electrical contact between said strain relief member and said shield member.

11. The electrical connector as defined in claim 6, wherein said cable strain relief device comprises first and second interengageable strain relief members each having a pair of spaced legs, one leg having outwardly directed engagement elements and the opposing leg having inwardly directed engagement elements, the outwardly directed engagement elements on a leg of one strain relief member engaging the inwardly directed engagement elements on a leg of the other strain relief member, said first and second strain relief members defining a bounded opening therebetween and being movable with respect to each other to reduce the size of said opening and for frictionally securing said cable thereat.

12. The electrical connector as defined in claim 11, wherein said engagement elements on said first and second strain relief members include interengageable teeth for permitting ratchet-type movement therebetween.

13. The electrical connector as defined in claim 11, wherein said shield member includes an upper and a lower wall each having a slot disposed therethrough for receiving each of said strain relief members.

14. The electrical connector as defined in claim 13, wherein said first and second strain relief members are made from an electrically conductive material and wherein at least one of said first and second strain relief members includes at least one raised protrusion which is mechanically forced against an inner wall of said slot of said shield member when said strain relief member is inserted in said slot thereby ensuring electrical contact between said strain relief member and said shield member.

15. The electrical connector as defined in claim 1, wherein the contact support member includes an elongated supporting surface extending rearwardly past the insulation displacement termination end portions and further wherein the cross member extends to a position adjacent the end of the elongated supporting surface of the contact support member.

16. The electrical connector as defined in claim 1, wherein the electrical contacts are blade-type contacts.

17. The electrical connector as defined in claim 16, wherein the connection end of the blade-type contact includes a resilient spring portion.

18. A method for connecting discrete conductors of a first multi-conductor cable to discrete conductors of a second multi-conductor cable to form a signal path through a data connector assembly comprising the steps of:

providing a data connector assembly comprising a plug and a jack, each of said plug and said jack including at least one electrically insulative contact support member;

supporting a plurality of electrical contacts on said at least one contact support member, said contacts having a connection end and a conductor termination end portion;

connecting discrete conductors of said first multi-conductor cable to said conductor termination end portion of said plug;

connecting discrete conductors of said second multi-conductor cable to said conductor termination end portion of said jack;

inserting said at least one contact support member along a longitudinal axis into an electrically conductive shield member of said plug and said jack, each of said shield members of said plug and said jack including a connection end and a conductor termination end said shield member comprising at least two outer walls and a cross member formed between and integral with said at least two outer walls, said cross member having a horizontal extent and a vertical extent for shielding both horizontally and vertically between the conductor termination end portion of at least two contacts separated by an extent of said cross member, said cross member extending rearwardly beyond said conductor termination end portion to separate and shield between at least a portion of two of the discrete conductors of the multi-conductor cable, wherein at least a portion of one of said horizontal and vertical shield extents of the cross member extends from the connection end to the conductor termination end; and

mechanically coupling said plug and said jack together so that said electrical contact connection end of said plug electrically mates with the electrical contact connection end of said jack.

19. The method as defined in claim 18, wherein said contact support member includes a horizontal and a vertical slot for receiving said cross member of said shield member.

20. The method as defined in claim 18, further comprising the step of substantially enclosing each of said plug and said jack with an outer protective housing.

21. The method as defined in claim 20, wherein said outer protective housing comprises two halves which are snap-fit together to substantially enclose each of said plug and said jack.