Device for connecting a coaxial cable to a printed circuit card

• US 20010051448A1
• Filed: 05/09/2001
• Published: 12/13/2001
• Est. Priority Date: 05/10/2000
• Status: Active Grant

• Current Assignee: Radiall SA
• Original Assignee: Radiall SA
• Inventors: Gonzales, Olivier
• Granted Patent: US 6,488,512 B2
• Time in Patent Office: Days
• US Class Current: 439/63
• CPC Class Codes: H01R 12/515 Terminal blocks providing connections to wires or cables
• 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 2103/00 Two poles
• CPC Class Codes: H01R 24/50 mounted on a PCB [Printed Circuit Board]

Abstract

A connection device for connecting a coaxial cable to a printed circuit card, the device comprising:

a tubular socket suitable for fixing to the card; and

a plug suitable for being mounted at the end of a coaxial cable, said plug comprising a tubular plug body and a central contact for connection to the central conductor of the cable,

the socket and the plug being arranged so that the plug can be inserted into the socket in a direction perpendicular to the plane of the printed circuit card. The socket comprises a resilient portion suitable for urging the plug body towards the printed circuit card along said direction so as to hold the central contact of the plug pressed against a conductive track of the printed circuit card.

Claims

1. A connection device for connecting a coaxial cable to a printed circuit card, the device comprising:

a tubular socket suitable for fixing to the card; and

a plug suitable for being mounted at the end of a coaxial cable, said plug comprising a tubular plug body and a central contact for connection to the central conductor of the cable,

the socket and the plug being arranged so that the plug can be inserted into the socket in a direction perpendicular to the plane of the printed circuit card, wherein the socket comprises a resilient portion suitable for urging the plug body towards the printed circuit card along said direction so as to hold the central contact of the plug pressed against a conductive track of the printed circuit card.

2. A device according to

claim 1

, wherein the central contact of the plug has a projection that bears against the conductive track of the printed circuit card.

3. A device according to

claim 1

, wherein the resilient portion of the socket is constituted by a plurality of elastically deformable tabs defined by slots formed over at least a fraction of the height of the socket.

4. A device according to

claim 3

, wherein the socket has a narrowing in its section in its elastic portion.

5. A device according to

claim 4

, wherein the plug body has a cylindrical central portion extended at each end by a respective tapering portion comprising a top tapering portion having a bearing surface for the elastically deformable tab and a bottom tapering portion whereby the plug is engaged in the socket, the height of the top tapering portion being preferably greater than that of the bottom tapering portion.

6. A device according to

claim 1

, wherein the resilient portion is constituted by at least one flexible tongue that is folded towards the inside of the socket.

7. A device according to

claim 1

, the central conductor of the cable being mechanically and electrically connected to the central contact of the plug by solder ring or by crimping, wherein the plug body has at least one opening for passing the tools that are necessary for performing the soldering or crimping operations.

8. A device according to

claim 1

, the outer conductor of the coaxial cable being mechanically and electrically connected to the plug body by soldering or crimping, wherein the plug body includes at least one opening for passing the tools that are necessary for performing the soldering or crimping operations.

9. A device according to

claim 2

, wherein the projection of the central contact of the plug is rigid.

10. A device according to

claim 2

, wherein an insulating sleeve is inserted between the plug body and the projection of the central contact of the plug.

11. A device according to

claim 10

, wherein the insulating sleeve is elastically deformable.

12. A device according to

claim 11

, wherein the insulating sleeve is made of elastomer, in particular of silicone.

13. A device according to

claim 11

, wherein the insulating sleeve is made of polymer foam.

14. A device according to

claim 10

, wherein mechanical clearance is provided between the insulating sleeve and the projection of the central contact of the plug.

15. A device according to

claim 1

, including an outer bearing piece engaged around the resilient portion of the socket and holding said resilient portion in contact with the plug body.

16. A device according to

claim 15

, wherein said bearing piece is constituted by a cap, in particular a polymer cap.

17. A device according to

claim 15

, wherein said bearing piece is a resilient ring engaged around the resilient portion of the socket.

18. A method of connecting a coaxial cable to a printed circuit card in a direction perpendicular to the plane of said card, the method comprising the following steps:

mounting a socket on the printed circuit card, e.g. by soldering, the socket including a resilient portion;

mounting one end of the coaxial cable on a plug comprising a plug body and a central contact, by connecting the central conductor of the cable to said central contact and by connecting the outer conductor of the cable to the plug body, e.g. by soldering or by crimping; and

mounting the plug body in the socket in a direction perpendicular to the plane of the printed circuit card, the resilient portion of the socket deforming during said mounting and at the end thereof exerting a force that is directed in a direction substantially perpendicular to the plane of the printed circuit card so as to hold the central contact of the plug against a conductive track of the card.