Terminal assembly for a coaxial cable

• US 6,809,265 B1
• Filed: 04/15/2003
• Issued: 10/26/2004
• Est. Priority Date: 04/15/2003
• Status: Expired due to Fees

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Gladd, Joseph Howard, Ketterer, William C, Hickox, Jeffrey Michael
• Primary Examiner(s): Mayo, III, William H.
• Application Number:
  US10/414,165
• Publication Number:
  US 20040206542A1
• Time in Patent Office: 560 Days
• Field of Search: 174/74.R, 174/75.C, 174/77.R, 174/78, 174/84.R, 174/88.C, 439/578, 439/108, 439/98, 439/99, 439/668, 439/609, 439/579, 439/669, 439/696, 439/737, 439/95, 439/394, 439/686, 439/687
• US Class Current: 174/74.00R
• CPC Class Codes: H01R 13/5045 different pieces being assembled by press-fit
• CPC Class Codes: H01R 4/023 between cables or wires and terminals
• CPC Class Codes: H01R 9/0524 Connection to outer conductor by action of a clamping member, e.g. screw fastening means H01R9/0515 takes precedence
• CPC Class Codes: H02G 15/085 for coaxial cables or hollow conductors plug and socket connections between HF conductors H01P1/04; plug and socket connections per se H01R24/38

Abstract

A terminal for a coaxial cable includes an electrically conductive core mounted in a dielectric member. The dielectric member along with the conductive core are positioned within an electrically conductive ground shield. The ground shield includes two identical split-barrel housing members which are joined together. When joined, the housing members form a cylindrical channel having surfaces which intimately contact an exposed length of cable outer conductor layer, creating a conductive connection between the outer conductor layer and the ground shield and structurally maintaining the outer conductor layer concentric to the dielectric sheath and inner conductor of the cable.

Claims

1. A terminal for an end of a coaxial cable, said coaxial cable including an inner conductor, an inner dielectric sheath around said inner conductor, an outer conductor layer having a cylindrical outer surface and concentrically surrounding said inner dielectric sheath and inner conductor, and an outer dielectric sheath around said outer conductor, and in which said coaxial cable end has been stripped back to expose a tip of said inner conductor, an axial length of said inner dielectric sheath, and an axial length of said outer conductor layer outer surface, said terminal comprising:

an electrically conductive core conductor for electrically connecting with said inner conductor of said coaxial cable;

a dielectric member having a body for receipt therein of said core conductor;

a ground shield comprising first and second electrically conductive housing members, each said housing member including a channel comprising a substantially half cylindrical surface intimately matching the shape of the exposed length of outer surface of said cable outer conductor layer, wherein each of said housing members also includes first and second mating, integral attachment members capable of being joined together to thereby form said channels into a complete cylinder,

whereby, when said ground shield housing members are joined together, said channel surfaces intimately contact said exposed length of outer conductor layer, creating a conductive connection between said outer conductor layer and said ground shield and structurally maintaining said outer conductor layer concentric to said dielectric sheath and said inner conductor.

2. The terminal of claim 1, further comprising a conductive bonding agent disposed between said ground shield and said exposed length of outer conductor layer.

3. The terminal of claim 2, wherein said conductive bonding agent comprises solder.

4. The terminal of claim 2, wherein said channel has a reduced diameter portion contacting said axial length of said inner dielectric sheath to prevent said conductive bonding agent from contacting said core conductor and said exposed tip of inner conductor.

5. The terminal of claim 1, wherein said ground shield includes at least one raised portion for engaging said outer dielectric sheath for resisting movement of said cable relative to said ground shield.

6. The terminal of claim 5, wherein said ground shield includes at least one raised rib and said body of said dielectric member includes at least one groove, said rib engaging said groove for resisting movement of said dielectric member relative to said ground shield.

7. The terminal of claim 1, wherein said first and said second housing members are joined at a plane extending along an axis of said internal passageway.

8. The terminal of claim 7, wherein said first and said second housing members are identically configured.

9. The terminal of claim 1, wherein each of said housing members being formed by a die cast process.

10. The terminal of claim 1, wherein each of said mating, integral attachment members of said housing members include a protruding rail and a complementary slot which extend along opposing edges of each housing member, said rail of each said housing member being received in said complementary slot of the other of said housing members.

11. The terminal of claim 1, wherein each of said housing members being rigid.

12. A ground shield for an end of a coaxial cable, said coaxial cable including an inner conductor, an inner dielectric sheath around said inner conductor, an outer conductor layer having a cylindrical outer surface and concentrically surrounding said inner dielectric sheath and inner conductor, and an outer dielectric sheath around said outer conductor, and in which said coaxial cable end has been stripped back to expose an axial length of said outer conductor layer outer surface, said ground shield comprising:

first and second electrically conductive, rigid ground shield housing members, each said housing member including a channel comprising a substantially half cylindrical surface intimately matching the shape of the exposed length of outer surface of said cable outer conductor layer, said housing members capable of being joined together to thereby form said channels into a complete cylinder,

whereby, when said ground shield housing members are joined together, said channel surfaces intimately contact said exposed length of outer conductor layer, creating a conductive connection between said outer conductor layer and said ground shield and structurally maintaining said outer conductor layer concentric to said dielectric sheath and said inner conductor.

13. The ground shield of claim 12, further comprising a conductive bonding agent disposed between said axial length of said outer conductor layer outer surface and said housing members.

14. The ground shield of claim 13, wherein said housing members each include mating, integral attachment members which are joined together.

15. The ground shield of claim 12, wherein each of said housing members include at least one raised portion for engaging said outer dielectric sheath for resisting movement of said cable relative to said housing members.

16. A ground shield for an end of a coaxial cable, said coaxial cable including an inner conductor, an inner dielectric sheath around said inner conductor, an outer conductor layer having a cylindrical outer surface and concentrically surrounding said inner dielectric sheath and inner conductor, and an outer dielectric sheath around said outer conductor, and in which said coaxial cable end has been stripped back to expose an axial length of said outer conductor layer outer surface, said ground shield comprising:

first and second electrically conductive housing members formed by a die casting process, each said housing member including a channel comprising a portion of a cylinder intimately matching the shape of said exposed length of said outer surface of said outer conductor layer, said housing members capable of being joined together to form said channels into a complete cylinder,

whereby when said ground shield housing member are joined together, said channel surfaces electrically contact said exposed length of outer conductor layer, creating a conductive connection between said outer conductor layer and said ground shield and structurally maintaining said outer conductor layer concentric to said dielectric sheath and said inner conductor.

17. The ground shield of claim 16, further comprising a conductive bonding agent disposed on said portion of a substantially cylinder surface.

18. The ground shield of claim 16, wherein said housing members each include mating, integral attachment members which are capable of being joined together.

19. The ground shield of claim 16, wherein said ground shield includes at least one raised portion for engaging said outer dielectric sheath for resisting movement of said cable relative to said ground shield.