Dismountable coaxial coupling

• US 4,973,265 A
• Filed: 07/20/1989
• Issued: 11/27/1990
• Est. Priority Date: 07/21/1988
• Status: Expired due to Fees

• Current Assignee: White Products BV (Prysmian SPA)
• Original Assignee: White Products BV (Prysmian SPA)
• Inventors: Heeren, Johannes P. A.
• Primary Examiner(s): McGlynn, Joseph H.
• Application Number:
  US07/383,374
• Time in Patent Office: 495 Days
• Field of Search: 439/578-585
• US Class Current: 439/584
• CPC Class Codes: H01R 9/0521 Connection to outer conductor by action of a nut

Abstract

A dismountable coupling 1, which can be assembled in a simple manner and in a short period of time is provided for coupling coaxial cables.

The coupling 1 having clamping means which include at least one pair of sockets (16, 17) with a contact socket 17, to be provided on the freed end of the cable between an inner conductor 9 and a coaxial outer conductor 10 of the cable and with a conical conductive clamping socket 16 to be provided round the outer conductor 10.

The contact socket 17 being provided with circumferential teeth 18 extending radially outwards. In a special embodiment the coupling 1 l has a conductive cylindrical adapter 20 with dimension to be chosen such that various cables can be connected while using the same housing 2 of the coupling 1.

Claims

1. A high frequency coupling for coupling two coaxial cables, said coupling being assembled of a cylindrical housing with two open ends, whereby the respective cables in the open ends can be connected together in the housing by means of clamping means, characterized in that the clamping means include at least a contact socket, to be provided on a freed end of the cable, between an inner conductor and an outer conductor of the cable extending coaxially relative to the inner conductor, and a conical conductive clamping socket to be provided round the outer conductor, and that the clamping means include a tightening nut which, by being screwed into the open end of the housing, squeezes the clamping socket on the outer conductor of the cable which is supported by the contact socket, said clamping means further including a conductive contact socket, open at two opposed head ends, whose head ends are each provided with longitudinal cuts for receiving the free inner conductors of the cables in a tight fit, and further characterized in that the clamping means include a conductive cylindrical adapter having two open ends, whereby the first end of the adapter is provided with screw thread which corresponds with screw thread provided on the second end of the housing, and whereby the second end of the adapter is provided with screw thread which corresponds with screw thread provided on the tightening nut, that a narrowing conical surface is provided in the adapter, said conical surface, by co-operating with the conical clamping socket, exerting the clamping force to be directed radially inwards on the outer conductor when the tightening nut is provided on the adapter, and that an insulating insert is provided between the contact socket and the adapter.

2. A high frequency coupling according to claim 1, characterized in that the contact socket has an upright edge, which is to project beyond the freed end of the cable, said upright edge in the assembled condition of the coupling butting against a cam edge provided in the adapter.

3. A high frequency coupling according to claim 1, characterized in that the contact socket is provided with teeth, extending radially outwards, which are mounted on its circumference.

4. A high frequency coupling according to claim 3, characterized in that the clamping means include an insulating contact socket holder, to be provided in the housing, for concentrically and mechanically supporting, inside the housing of the coupling, the contact socket that electrically connects the inner conductors.

5. A high frequency coupling according to claims 1 or 3, characterized in that helical teeth are provided on the inner surface of the terminal socket, which is to be brought into contact with the outer conductor.

6. A high frequency coupling according to claims 1 or 3, characterized in that the clamping socket has a slit, which is provided in the longitudinal direction.

7. A high frequency coupling according to claims 1 or 3, characterized in that a washer is provided between the clamping socket and the tightening nut.

8. A high frequency coupling according to claims 1 or 3, characterized in that a flexible O-ring is provided in an inner peripheral edge of the tightening nut.

9. A high frequency coupling according to claims 1 or 3, characterized in that a further O-ring is provided in an outer peripheral edge of the tightening nut.

10. A high frequency coupling for coupling two coaxial cables, at least one of said cables having a free end defined by an inner conductor, a dielectric surrounding said inner conductor and an outer conductor surrounding said dielectric, said coupling including a cylindrical conductive housing with open ends, whereby the respective cables in said open ends are connectable together in said housing, and clamping means connectable to one open end of said housing for connecting said one cable to said housing, said clamping means including at least a first contact socket disposed on the dielectric of the free end of said one cable, substantially entirely between said inner conductor and said outer conductor of said free end, and a conical conductive clamping socket disposed on said outer conductor on said free end and having a conical outer surface which narrows in the direction of said free end, said clamping means further including a conductive cylindrical adapter having a first end for connection to said one open end of said housing and a second end having a narrowing conical inner surface for receiving said clamping socket, with the outer conical surface of said clamping socket engaging the inner surface of said adapter, said clamping means further including a tightening nut for connection to said second end of said adapter such that by tightening the connection of said nut with said adapter said clamping socket is forced into said adapter and a radially inwardly directed clamping force is exerted on said outer conductor.

11. A high frequency coupling according to claim 10, wherein said first contact socket has teeth mounted on its circumference and extending radially outwards.

12. A high frequency coupling according to claim 10, wherein said clamping socket has helical teeth on its inner surface.

13. A high frequency coupling according to claim 10 or claim 12, wherein said clamping socket has a slit along the longitudinal direction of the coupling.

14. A high frequency coupling according to claim 10, further comprising a washer located between said clamping socket and said tightening nut.

15. A high frequency coupling according to claim 10, further comprising a flexible O-ring mounted in an inner peripheral edge of said tightening nut.

16. A high frequency coupling according to claim 10, further comprising an O-ring mounted in an outer peripheral edge of said tightening nut.

17. A high frequency coupling according to claim 10, said clamping means further including a second conductive contact socket, having two opposed open head ends with longitudinal cuts for receiving inner conductors of the respective cables in a tight fit.

18. A high frequency coupling according to claim 17, said clamping means further including an insulating contact socket holder for concentrically and mechanically supporting said second contact socket inside said housing.

19. A high frequency coupling according to claim 17, wherein said first end of said conductive cylindrical adapter has screw thread corresponding to screw thread on said one open end of said housing, and said second end of said adapter has screw thread corresponding to screw thread on said tightening nut, and further comprising an insulating insert disposed between said second contact socket and said adapter.

20. A high frequency coupling according to claim 19, wherein said second contact socket has an upright edge projecting beyond said free end of said cable, for positioning said second contact socket against a cam edge within said adapter.