Connector

• US 5,110,308 A
• Filed: 08/13/1990
• Issued: 05/05/1992
• Est. Priority Date: 08/11/1989
• Status: Expired due to Term

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Ogura, Hiromi, Maruyama, Yuichi, Nishikawa, Toshio, Michishita, Kenshi
• Primary Examiner(s): Pirlot, David L.
• Assistant Examiner(s): CARROLL, KEVIN
• Application Number:
  US07/567,011
• Time in Patent Office: 631 Days
• Field of Search: 439/578, 439/582, 439/585, 439/98, 439/99, 439/881, 439/882, 439/579, 439/580, 439/581
• US Class Current: 439/582
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 4/2458 the contact members being in a slotted tubular configuration, e.g. slotted tube-end
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule

Abstract

A connector is disclosed which is to be mounted to a coaxial cable having an internal conductor, an internal insulator, cable outer (or shield) conductor, and a cable outer insulator. The connector comprises a housing formed of a connector outer conductor and a concentric inner contact. The connector outer conductor includes a cylindrical main portion and a rear cover portion. An outer conductor adapter is fixed to the main portion of the connector outer conductor and is adapted for insertion between the internal insulator and the cable outer conductor of the coaxial cable. A sleeve portion, which can include either a single securing member or two securing members to be wrapped about the coaxial cable, is formed integrally with the connector outer conductor. The inner contact is provided at its rear end with a slot into which the internal conductor is to be thrust, and at its forward end with a plurality of slits to provide an elastic firm holding force for holding a mating contact of another cable. An insulating member can be provided on a rear end of the inner contact. The insulating member is frustoconically shaped and includes a tapered groove in its front face to squeeze the rear end of the inner contact so as to positively engage the internal conductor in the slot. Solder can be provided about the internal conductor for more positive contact.

Claims

1. A connector adapted to be mounted to a coaxial cable having a cable internal conductor, an internal insulator surrounding the internal conductor, a shield conductor surrounding the internal insulator, and a cable outer insulator surrounding the shield conductor, said connector comprising:

a housing comprising, an outer conductor having a main portion with a front end and a rear end, and an inner contact mounted within said main portion of said outer conductor and being adapted to be connected to the internal conductor of the coaxial cable;

an outer conductor adapter which is one piece with, in electrical contact with, and extending away from said main portion of said outer conductor of said housing, said outer conductor adapter being adapted for insertion between the cable internal insulator and the shield conductor of the coaxial cable; and

a sleeve portion formed as one piece with, in electrical contact with, and extending away from said outer conductor of said housing, at least part of said sleeve portion being adapted to wrap around the coaxial cable so as to cause the shield conductor of the coaxial cable to adhere under pressure to said outer conductor adaptor.

2. A connector as recited in claim 1, further comprising

means for mounting said inner contact within said main portion of said outer conductor and for electrically insulating said inner contact from said main portion of said outer conductor.

3. A connector as recited in claim 2, wherein:

said main portion of said outer conductor and said inner contact are substantially cylindrical; and

said inner contact is mounted substantially concentrically within said main portion of said outer conductor.

4. A connector as recited in claim 1, wherein

said at least part of said sleeve portion which is adapted to wrap around the coaxial cable comprising a single securing member adapted to wrap around the outer insulator of the coaxial cable.

5. A connector as recited in claim 1, wherein

said at least part of said sleeve portion which is adapted to wrap around the coaxial cable comprises a first securing member adapted to wrap around the shield conductor of the coaxial cable, and a second securing member adapted to wrap around the outer insulator of the coaxial cable, said first and second securing members being separated by slots.

6. A connected as recited in claim 5, wherein

said second securing member is spaced further from said main portion of said outer conductor than said first securing member is spaced from said main portion of said outer conductor.

7. A connector as recited in claim 1, wherein

said inner contact includes means for engaging the internal conductor of the coaxial cable.

8. A connector as recited in claim 7, wherein

said engaging means comprises a pair of diametrically opposed elongated slots formed in said inner contact longitudinally along said inner contact adjacent a rear end thereof, said pair of slots being adapted to be narrower in width than a diameter of the internal conductor of the coaxial cable such that the internal conductor can be thrust into said pair of slots from said rear end of said inner contact to provide a positive electrical and mechanical connection between the internal conductor and said inner contact.

9. A connector as recited in claim 7, wherein

said engaging means comprises a slot formed in said inner contact about a portion of the circumference of said inner contact near a rear end thereof, said slot being adapted to be narrower in width than a diameter of the internal conductor of the coaxial cable such that the internal conductor can be thrust into said slot to provide a positive electrical and mechanical connection between the internal conductor and said inner contact.

10. A connector as recited in claim 7, wherein

said inner contact further includes means for firmly holding a mating contact of a cable to be connected to the coaxial cable.

11. A connector as recited in claim 10, wherein

said firm holding means comprises at least one elongated slit formed longitudinally along said inner contact adjacent a forward end thereof.

12. A connector as recited in claim 11, wherein

said at least one elongated slit comprises a plurality of elongated slits spaced evenly about the circumference of said inner contact.

13. A connector as recited in claim 1, wherein

said outer conductor of said housing further includes a rear cover portion which, when said at least part of said sleeve portion is wrapped around the coaxial cable, substantially closes said rear end of said main portion of said outer conductor.

14. A connector as recited in claim 13, further comprising

means for insulating said inner contact from said rear cover portion of said outer conductor and for compressing a rear end of said inner contact radially inwardly.

15. A connector as recited in claim 14, wherein

said inner contact includes means for engaging the internal conductor of the coaxial cable;

and

said engaging means comprises a pair of diametrically opposed elongated slots formed longitudinally along said inner contact adjacent a rear end thereof.

16. A connector as recited in claim 15, wherein

said insulating means comprises a substantially frustoconically shaped insulating member having a front end and a rear end, said front end being smaller in diameter than said rear end.

17. A connector as recited in claim 16, wherein

said insulating member has a groove formed in a front face thereof along a diametric line from a central portion of said front face to a peripheral edge thereof, said groove having sidewalls tapered from front to back with a forwardmost portion of said groove being wider than a rearwardmost portion thereof;

and

said groove is adapted to receive said rear end of said inner contact.

18. A connector as recited in claim 1, further comprising

means for positively securing the internal conductor of the coaxial cable to a rear end of said inner contact upon heating and subsequent cooling.

19. A connector as recited in claim 18, wherein

said securing means comprises solder formed about the internal conductor of the coaxial cable.

20. A connector adapted to be mounted to a coaxial cable having a cable internal conductor, an internal insulator surrounding the internal conductor, a shield conductor surrounding the internal insulator, and cable outer insulator surrounding the conductor, said connector comprising:

a housing comprising, an outer conductor having a main portion with a front end and a rear end, and an inner contact mounted within said main portion of said outer conductor and being adapted to be connected to the internal conductor of the coaxial cable;

an outer conductor adapter fixed to, in electrical contact with, and extending away from said main portion of said outer conductor of said housing, said outer conductor adapter being adapted for insertion between the cable internal insulator and the shield conductor of the coaxial cable; and

a sleeve portion formed as one piece with, in electrical contact with, and extending away from said outer conductor of said housing, at least part of said sleeve portion being adapted to wrap around the coaxial cable so as to cause the shield conductor of the coaxial cable to adhere under pressure to said outer conductor adaptor; and

wherein said outer conductor of said housing further includes a rear cover portion which, when said at least part of said sleeve portion is wrapped around the coaxial cable, substantially closes said rear end of said main portion of said outer conductor.

21. A connected as recited in claim 20, further comprising

means for mounting said inner contact within said main portion of said outer conductor and for electrically insulating said inner contact from said main portion of said outer conductor.

22. A connector as recited in claim 21, wherein

said main portion of said outer conductor and said inner contact are substantially cylindrical;

and

said inner contact is mounted substantially concentrically within said main portion of said outer conductor.

23. A connector as recited in claim 22, wherein

said at least part of said sleeve portion which is adapted to wrap around the coaxial cable comprises a first securing member adapted to wrap around the shield conductor of the coaxial cable, and a second securing member adapted to wrap around the outer insulator of the coaxial cable.

24. A connector as recited in claim 23, wherein

said second securing member is spaced further from said main portion of said outer conductor than said first securing member is spaced from said main portion of said outer conductor.

25. A connector as recited in claim 24, wherein

said inner contact includes means for engaging the internal conductor of the coaxial cable.

26. A connector as recited in claim 25, wherein

said engaging means comprises a pair of diametrically opposed elongated slots formed in said inner contact longitudinally along said inner contact adjacent a rear end thereof, said pair of slots being adapted to be narrower in width than a diameter of the internal conductor of the coaxial cable such that the internal conductor can be thrust into said pair of slots from said rear end of said inner contact to provide a positive electrical and mechanical connection between the internal conductor and said inner contact.

27. A connector as recited in claim 25, wherein

said engaging means comprises a slot formed in said inner contact about a portion of the circumference of said inner contact near a rear end thereof, said slot being adapted to be narrower in width than a diameter of the internal conductor of the coaxial cable such that the internal conductor can be thrust into said slot to provide a positive electrical and mechanical connection between the internal conductor and said inner contact.

28. A connector as recited in claim 25, wherein

said inner contact further includes means for firmly holding a mating contact of a cable to be connected to the coaxial cable.

29. A connector as recited in claim 28, wherein

said firm holding means comprises at least one elongated slit formed longitudinally along said inner contact adjacent a forward end thereof.

30. A connector as recited in claim 29, wherein

said at least one elongated slit comprises a plurality of elongated slits spaced evenly about the circumference of said inner contact.

31. A connector as recited in claim 20, further comprising

means for insulating said inner contact from said rear cover portion of said outer conductor and for compressing a rear end of said inner contact radially inwardly.

32. A connector as recited in claim 31, wherein

said inner contact includes means for engaging the internal conductor of the coaxial cable;

and

said engaging means comprises a pair of diametrically opposed elongated slots formed longitudinally along said inner contact adjacent a rear end thereof.

33. A connector as recited in claim 32, wherein

said insulating means comprises a substantially frustoconically shaped insulating member having a front end and a rear end, said front end being smaller in diameter than said rear end.

34. A connector as recited in claim 33, wherein

said insulating member has a groove formed in a front face thereof along a diametric line from a central portion of said front face to a peripheral edge thereof, said groove having sidewalls tapered from front to back with a forwardmost portion of said groove being wider than a rearwardmost portion thereof;

and

said groove is adapted to receive said rear end of said inner contact.