Connector for shielded electric cables and corresponding assembly method

• US 9,935,404 B2
• Filed: 05/14/2013
• Issued: 04/03/2018
• Est. Priority Date: 05/16/2012
• Status: Active Grant

• Current Assignee: Nicomatic LP
• Original Assignee: Nicomatic LP
• Inventors: Zieder, David
• Primary Examiner(s): Lyons, Michael A
• Assistant Examiner(s): Jeancharles, Milagros
• Application Number:
  US14/401,291
• Publication Number:
  US 20150126067A1
• Time in Patent Office: 1,785 Days
• Field of Search: 4396075, 43960712, 43960723, 43960727, 43960741, 43960745, 43960749, 43960755, 43960748, 439497
• CPC Class Codes: H01R 12/594 for shielded flat cable
• CPC Class Codes: H01R 13/658 High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse] coaxial coupling devices specially adapted for high frequency H01R24/40; for flat or ribbon cable connectors H01R12/774; for coaxial cable H01R9/05
• CPC Class Codes: H01R 13/65912 for shielded multiconductor cable coaxial cables with one conductor surrounded by shield H01R9/05; flat shielded cables H01R12/594
• CPC Class Codes: H01R 13/6592 the conductive member being a shielded cable
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule

Abstract

The invention relates to a connector for a shielded electric cable (1), said shielded electric cable (3) comprising at least one conductor and a shielding (5) that at least partially covers said shielded electric cable (3), said connector (1) comprising a connector housing (7) containing the conductor, the invention being characterized in that said shielding (5) is partially arranged around said connector housing (7), said connector housing (7) being electroconductive, and said connector (1) comprising a holding ferule (11) arranged around the shielding (5) in such a way as to maintain the connection of the shielding (5) to the connector housing (7) both mechanically by means of clamping and also by direct electrical connection. The invention also relates to a method for the assembly of such a connector for a shielded electric cable.

Claims

1. A connector for a shielded electric cable, the shielded electric cable including at least one conductor and a shielding that at least partly covers the shielded electric cable, the connector comprising:

a connector housing configured such that the conductor is arranged therein, and such that the shielding is partly arranged around said connector housing, said connector housing being electrically conductive; and

a holding ferrule configured for being arranged around the shielding so as to hold the shielding in mechanical connection by clamping and in direct electrical connection with said connector housing,

wherein said connector housing has a positioning and abutment means of the shielding around the connector housing and said holding ferrule has separate front ends folded back against said positioning and abutment means, so as to form a connection area allowing a mechanical connection between said holding ferrule and said connector housing.

2. The connector for a shielded electric cable as claimed in claim 1, wherein the holding ferrule has a back end capable of applying a pressure to the shielding in the direction of said connector housing as to allow a mechanical and electrical connection between the shielding and said connector housing over a connection area over the whole perimeter of the connector housing.

3. The connector for a shielded electric cable as claimed in claim 1, characterized in that said holding ferrule extends at least from the back face of said connector housing to said positioning and abutment means that it covers, so as to form two mechanical stops between said holding ferrule and the connector housing.

4. The connector for a shielded electric cable as claimed in claim 1, characterized in that said holding ferrule is deformed in the direction of said connector housing so as to form a connection area allowing a mechanical and electrical connection between the shielding and said connector housing.

5. The connector for a shielded electric cable as claimed in claim 1, said connector housing having a first face and a second face, said first and second faces having openings, characterized in that said holding ferrule is deep drawn in the direction of said connector housing at the level of the openings such that the shielding is partly drawn into the openings.

6. The connector for a shielded electric cable as claimed in claim 1, characterized in that it has a substantially rectangular cross section.

7. The connector for a shielded electric cable as claimed in claim 1, wherein the electric cable comprises a protective sheath arranged around the shielding, characterized in that said holding ferrule is arranged around said protective sheath so as to hold said protective sheath around the shielding around the outer surface of said connector housing so as to hold the shielding in mechanical connection by clamping and in direct electrical connection with the connector housing.

8. A method for assembling a connector for a shielded electric cable, the shielded electric cable including at least one conductor and a shielding that at least partly covers the shielded electric cable, the connector including a connector housing having positioning and abutment means and a holding ferrule having a back end and separate front ends, the method comprising:

winding the electrical shielding around the connector housing;

winding the holding ferrule around the shielding so as to clamp the back end of the holding ferrule around the shielding and thus to clamp the shielding around the connector housing so as to form a connection area, allowing an electrical and mechanical connection between the shielding and the connector housing; and

crimping the front ends of the holding ferrule against the positioning and abutment means of the connector housing, so as to form a connection area allowing a mechanical connection between the holding ferrule and the connector housing.

9. The method for assembling a connector for a shielded electric cable as claimed in claim 8 further comprising:

drawing the holding ferrule in the direction of the connector housing so as to form a connection area, allowing an electrical and mechanical connection between the shielding and the connector housing.

10. The method for assembling a connector for a shielded electric cable as claimed in claim 9, the connector housing having openings, and wherein the method further comprises:

drawing the holding ferrule deep into the openings so as to partly draw the shielding into the openings so as to form the connection area allowing an electrical and mechanical connection between the shielding and the connector housing.

11. A connector comprising:

an electrically conductive connector housing configured such that a shielding may be partly arranged thereon, said electrically conductive connector housing comprising

a positioning and abutment means of the shielding around the connector housing; and

a holding ferrule coupled to said electrically conductive connector housing,

said holding ferrule capable of clamping the shielding on said electrically conductive connector housing such that the shielding is in direct electrical connection with said electrically conductive connector housing,

wherein said holding ferrule has separate front ends folded back against said positioning and abutment means, so as to form a connection area allowing a mechanical connection between said holding ferrule and said electrically conductive connector housing.

12. The connector of claim 11, wherein said holding ferrule has a back end configured to apply pressure to the shielding in the direction of said electrically conductive connector housing as to allow a mechanical and electrical connection between the shielding and said electrically conductive connector housing over a connection area over the whole perimeter of said electrically conductive connector housing.

13. The connector of claim 11, wherein said holding ferrule extends at least from a back face of the connector housing to said positioning and abutment means so as to form two mechanical stops between said holding ferrule and said electrically conductive connector housing.

14. The connector of claim 11, wherein said holding ferrule is deformed in a direction of said electrically conductive connector housing so as to form a connection area allowing a mechanical and electrical connection between the shielding and said electrically conductive connector housing.

15. The connector of claim 11, wherein:

said electrically conductive connector housing having a first face and a second face, with the first and second faces having openings; and

said holding ferrule is disposed in the direction of said electrically conductive connector housing at the level of the openings such that the shielding is partly drawn into the openings.

16. The connector of claim 11, wherein the connector has a substantially rectangular cross section.

17. The connector of claim 11, further comprising a shielded electric cable comprising:

at least one conductor;

a shielding that at least partly covers said at least one conductor;

a protective sheath arranged around said shielding and wherein said holding ferrule is arranged around said protective sheath so as to hold said protective sheath around the shielding around the outer surface of said electrically conductive connector housing so as to hold said shielding in mechanical connection by clamping and in direct electrical connection with said electrically conductive connector housing.

18. A connector for a shielded electric cable, the shielded electric cable including at least one conductor and a shielding that at least partly covers the shielded electric cable, the connector comprising:

a connector housing configured such that the conductor is arranged therein, and such that the shielding is partly arranged around said connector housing, said connector housing being electrically conductive; and

a holding ferrule configured for being arranged around the shielding so as to hold the shielding in mechanical connection by clamping and in direct electrical connection with said connector housing,

wherein said connector housing has a positioning and abutment means of the shielding around the connector housing and said holding ferrule has separate front ends folded back against said positioning and abutment means, so as to form a connection area allowing a mechanical connection between said holding ferrule and said connector housing, and wherein said holding ferrule extends at least from the back face of said connector housing to said positioning and abutment means that it covers, so as to form two mechanical stops between said holding ferrule and the connector housing.

19. A method for assembling a connector for a shielded electric cable, the shielded electric cable including at least one conductor and a shielding that at least partly covers the shielded electric cable, the connector including a connector housing having positioning and abutment means and openings, and a holding ferrule having a back end and separate front ends, the method comprising:

winding the electrical shielding around the connector housing;

winding the holding ferrule around the shielding so as to clamp the back end of the holding ferrule around the shielding and thus to clamp the shielding around the connector housing so as to form a connection area, allowing an electrical and mechanical connection between the shielding and the connector housing;

crimping the front ends of the holding ferrule against the positioning and abutment means of the connector housing, so as to form a connection area allowing a mechanical connection between the holding ferrule and the connector housing,

drawing the holding ferrule in the direction of the connector housing; and

drawing the holding ferrule deep into the openings of the connector housing so as to partly draw the shielding into the openings so as to form the connection area,

allowing an electrical and mechanical connection between the shielding and the connector housing.