Tapered lead-in insert for a coaxial contact

• US 4,990,105 A
• Filed: 05/31/1990
• Issued: 02/05/1991
• Est. Priority Date: 05/31/1990
• Status: Expired due to Fees

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Karlovich, Robert J.
• Primary Examiner(s): McGlynn, Joseph H.
• Application Number:
  US07/531,204
• Time in Patent Office: 250 Days
• Field of Search: 439/578-585
• US Class Current: 439/578
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 24/44 comprising impedance matching means
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule

Abstract

There is disclosed a coaxial contact for termination to a coaxial cable. The coaxial contact has an electrically conductive shell defining an open forward end (116). A center contact (56) for termination to a center conductor (208) of the cable has a mating portion defining cantilever beam means (60) extending to respective distal ends (54). The center contact (56) is disposed concentrically within and isolated from shell (104) by a first dielectric insert (26). A second dielectric insert (192) having a forward portion (232) and a rearward portion (234) is secured in the shell proximate the forward end (116). The second insert (192) has an axial bore (220) therein for receiving a center pin contact of a mating connector. The rearward portion receives within bore (220) the distal ends (54) and a limited length of the cantilever beam means (60).

Claims

1. A coaxial contact, comprising:

an electrically conductive shell defining an open forward end;

a center contact for termination to a center conductor of a coaxial cable, the center contact having a mating portion defining cantilever beam means, said cantilever beam means extending to respective distal ends, said center contact disposed concentrically in said shell and isolated therefrom; and

a dielectric insert having a forward portion and a rearward portion, said insert secured in the shell proximate the open forward end, the insert having an axial bore therethrough for receiving a center pin contact of a mating connector, the rearward portion receiving the distal ends and a limited length of said cantilever beam means within said bore.

2. A coaxial contact as recited in claim 1, wherein the forward portion tapers from proximate the periphery thereof to the bore, defining a tapered lead-in to guide the pin toward the bore during alignment and mating.

3. A coaxial contact as recited in claim 1, wherein the bore through at least a limited length of said rearward portion is enlarged in diameter to receive said cantilever beam means.

4. A coaxial contact as recited in claim 1, wherein the rearward portion extends to a rear surface, the insert being tapered around the periphery of the rear surface to facilitate passing the insert into the shell during fabrication.

5. A coaxial contact as recited in claim 1, wherein the rearward portion extends to a rear surface, the insert being tapered at the rear surface around the periphery of the bore to facilitate insertion of the cantilever beam means into the bore.

6. A coaxial contact as recited in claim 1, wherein the insert further comprises an annular recess, said forward end crimped into the recess to secure the insert in the shell.

7. A coaxial contact as recited in claim 6, further comprising notches in the forward end of the shell to facilitate crimping.

8. A coaxial contact as recited in claim 1, wherein the rearward portion is castellated defining projections around the periphery of the rearward portion with air gaps therebetween.

9. A coaxial contact as recited in claim 8, wherein the projections are positioned around the periphery of the rearward portion proximate the cantilever beam means and provide anti-overstress stops for the cantilever beam means.

10. A coaxial contact, comprising:

an electrically conductive shell defining an open forward end;

a center contact for termination to a center conductor of a coaxial cable, the center contact having a mating portion defining cantilever beam means, said cantilever beam means extending to respective distal ends;

a first dielectric insert for securing the center contact in the shell electrically isolated therefrom; and

a second dielectric insert having a forward portion and a rearward portion, said second insert secured in the shell proximate the forward end, said second insert having an axial bore therethrough for receiving a center pin contact of a mating connector.

11. A coaxial contact as recited in claim 10, wherein the bore through at least a limited length of said rearward portion is enlarged in diameter to receive said cantilever beam means.

12. A coaxial contact as recited in claim 10, wherein the forward portion of said second insert tapers from proximate the periphery thereof to the bore thereby defining a tapered lead-in to guide a pin toward the bore during alignment and mating.

13. A coaxial contact as recited in claim 12, wherein the distal ends and a limited length of the cantilever beam means are received within said bore.

14. A coaxial contact as recited in claim 12, wherein the forward portion of said second insert tapers from proximate the periphery thereof to the bore thereby defining a tapered lead-in to guide a pin toward the bore during alignment and mating.

15. A coaxial contact as recited in claim 10, wherein the rearward portion of said second insert is castellated defining projections around the periphery of the rearward portion with air gaps therebetween.

16. A coaxial contact as recited in claim 15, wherein the projections are positioned around the periphery of the rearward portion between the cantilever beam means and the shell, whereby the projections define anti-overstress stops for the cantilever beam means.

17. A coax mix connector, comprising:

an insulative housing for receiving and securing at least one coax contact and at least one non-coax contact;

a coaxial contact received and secured in said housing, said coaxial contact having

an electrically conductive shell defining an open forward end,

a center contact for termination to a center conductor of a coaxial cable, the center contact having a mating portion defining cantilever beam means, said cantilever beam means extending to respective distal ends, said center contact disposed concentrically in said shell and isolated therefrom; and

a dielectric insert having a forward portion and a rearward portion, said insert secured in the shell proximate the forward end, the insert having an axial bore therethrough for receiving a center pin contact of a mating connector, the rearward portion receiving the distal ends and a limited length of said cantilever beam means within said bore.

18. A coax mix connector as recited in claim 17, wherein the bore through at least a limited length of said rearward portion is enlarged in diameter to receive said cantilever beam means.

19. A coax mix connector as recited in claim 17, wherein the rearward portion of the insert is castellated defining projections around the periphery of the rearward portion with air gaps between the projections.

20. A coax mix connector as recited in claim 19, wherein the projections are positioned around the periphery of the rearward portion between the cantilever beam means and the shell, whereby the projections define anti-overstress stops for the cantilever beam means.