Electrical connector system for shielded flat flexible circuitry

• US 6,010,359 A
• Filed: 07/08/1998
• Issued: 01/04/2000
• Est. Priority Date: 07/08/1998
• Status: Expired due to Term

• Current Assignee: Molex Incorporated
• Original Assignee: Molex Incorporated
• Inventors: Fuerst, Robert M., Watt, Russell J., LePottier, Yves, Etters, Harry N.
• Primary Examiner(s): Nguyen, Khiem
• Assistant Examiner(s): JOHNSON, VINCENT L
• Application Number:
  US09/112,081
• Time in Patent Office: 545 Days
• Field of Search: 439/67, 439/77, 439/108, 439/495, 439/496, 439/607, 439/493, 439/497
• US Class Current: 439/496
• CPC Class Codes: H01R 12/592 connections to contact elements
• CPC Class Codes: H01R 12/771 Details
• CPC Class Codes: H01R 13/6592 the conductive member being a shielded cable
• CPC Class Codes: H05K 1/0218 by printed shielding conductors, ground planes or power plane H05K1/0236 takes precedence
• CPC Class Codes: H05K 1/118 specially for flexible printed circuits, e.g. using folded portions

Abstract

A connector system for terminating a shielded flat flexible circuit includes a connector body member on which the circuit is positionable. The body member is conductive and includes at least one projection. A flat flexible circuit includes a plurality of signal conductors and at least one grounding conductor. The circuit includes a hole for receiving the projection of the body member in engagement with the grounding conductor to thereby common the grounding conductor with the conductive connector body member.

Claims

1. A connector system for electrically interconnecting the conductors of a shielded flat flexible circuit to the conductors of a complementary mating connecting device, comprising

a connector body member for positioning the flat flexible circuit thereon, the body member being conductive and including at least one projection;

and

a flat flexible circuit positionable on the body member and including a plurality of signal conductors and at least one grounding conductor, with a hole in the circuit for receiving said projection in engagement with the grounding conductor and to thereby common the grounding conductor with the conductive connector body member.

2. The connector system of claim 1 wherein said connector body member is a male body member about which the flat flexible circuit is wrapped with the signal conductors facing away from the body member.

3. The connector system of claim 1 wherein said flat flexible circuit includes a flexible insulating substrate with said signal conductors extending along at least one side of the substrate and said grounding conductor extending along an opposite side of the substrate.

4. The connector system of claim 3 wherein said grounding conductor comprises a grounding grid.

5. The connector system of claim 1 wherein the hole in said flat flexible circuit is generally round, the cross-dimension of said projection is greater than the diameter of the hole, and the difference between the cross-dimension of the projection and the diameter of the hole is on the order of 5% to 50% of the diameter of the hole.

6. The connector system of claim 1 wherein said flat flexible circuit is positionable on the body member with the signal conductors facing away from the body member, and including a yieldable backing structure on the body member beneath the flexible circuit for resiliently biasing the signal conductors outwardly.

7. The connector system of claim 6 wherein said yieldable backing structure is a molded-in-place component.

8. The connector system of claim 7 wherein said molded-in-place component is of an elastomeric material.

9. The connector system of claim 8 wherein said molded-in-place component is of silicone rubber material.

10. A connector system for electrically interconnecting the conductors of a shielded flat flexible circuit to the conductors of a complementary mating connecting device, comprising:

a connector body member for positioning the flat flexible circuit thereon, the body member being conductive and including at least one projection extending away from the body member; and

a flat flexible circuit positionable on the body member and including a flat flexible insulating substrate, a plurality of signal conductors disposed on one side of the substrate facing away from the body member, at least one grounding conductor disposed on an opposite side of the substrate facing the body member, and a hole in the circuit for receiving said projection in engagement with the grounding conductor and to thereby common the grounding conductor with the conductive connector body member.

11. The connector system of claim 10 wherein said connector body member is a male body member about which the flat flexible circuit is wrapped with the signal conductors facing away from the body member.

12. The connector system of claim 10 wherein said grounding conductor comprises a grounding grid.

13. The connector system of claim 10 wherein the hole in said flat flexible circuit is generally round, the cross-dimension of said projection is greater than the diameter of the hole, and the difference between the cross-dimension of the projection and the diameter of the hole is on the order of 5% to 50% of the diameter of the hole.

14. The connector system of claim 10, including a yieldable backing structure on the body member beneath the flexible circuit for resiliently biasing the signal conductors outwardly.

15. The connector system of claim 14 wherein said yieldable backing structure is a molded-in-place component.

16. The connector system of claim 15 wherein said molded-in-place component is of an elastomeric material.

17. The connector system of claim 16 wherein said molded-in-place component is of silicone rubber material.

18. A connector system for electrically interconnecting the conductors of a shielded flat flexible circuit to the conductors of a complementary mating connecting device, comprising:

a connector body member for positioning the flat flexible circuit thereon, the body member being conductive;

a flat flexible circuit positionable on the body member and including a plurality of signal conductors and at least one grounding conductor all on the same side of the circuit, with the signal conductors facing away from the body member for engaging the conductors of the complementary mating connecting device, and a hole in the circuit in the vicinity of the grounding conductor; and

a projection on the connector body member remote from the signal conductors for projecting through said hole and into engagement with the grounding conductor, to thereby common the grounding conductor and the conductive connector body member.

19. The connector system of claim 18 wherein said grounding conductor comprises a grounding grid.

20. The connector system of claim 18 wherein the hole in said flat flexible circuit is generally round, the cross-dimension of said projection is greater than the diameter of the hole, and the difference between the cross-dimension of the projection and the diameter of the hole is on the order of 5% to 50% of the diameter of the hole.

21. The connector system of claim 18, including a yieldable backing structure on the body member beneath the flexible circuit for resiliently biasing the signal conductors outwardly.

22. The connector system of claim 21 wherein said yieldable backing structure is a molded-in-place component.

23. The connector system of claim 22 wherein said molded-in-place component is of an elastomeric material.

24. The connector system of claim 23 wherein said molded-in-place component is of silicone rubber material.