POST-LESS, SELF-GRIPPING CONNECTOR FOR A COAXIAL CABLE

• US 20180131143A1
• Filed: 10/09/2017
• Published: 05/10/2018
• Est. Priority Date: 11/04/2016
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: Corning Optical Communications RF, LLC (Corning Incorporated)
• Inventors: Balcer, Anders, Matzen, Michael Ole, Meister, Michael, Miller, Thomas Dewey, Petersen, Jens, Slobodziuk, Nikolaj
• Granted Patent: US 10,218,132 B2
• Time in Patent Office: Days
• CPC Class Codes: H01R 13/5825 the means comprising additional parts captured between housing parts and cable
• CPC Class Codes: H01R 13/585 Grip increasing with strain force
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/56 specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
• 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: H01R 9/0527 Connection to outer conductor by action of a resilient member, e.g. spring

Abstract

A post-less, self-gripping coaxial cable connector for tool-less attachment to an end of a coaxial cable is disclosed. The coaxial cable connector has a body having a forward end and a rearward end and a longitudinal opening. A retainer positioned in the body has a forward section, a rearward section, and a bore. A ring is movably disposed in the retainer. A gripping member having at least one spring finger is friction fit to the body and is radially inwardly biased in a predisposed orientation. The ring has a pusher feature configured to axially move the ring upon force being applied to the pusher feature by a coaxial cable received by the body causing the gripping member to engage the jacket of the coaxial cable when the coaxial cable is installed in the coaxial cable connector.

Claims

1. A post-less, self-gripping coaxial cable connector for tool-less attachment to an end of a coaxial cable, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, and a jacket surrounding the outer conductor, the coaxial cable connector comprising:

a body having a forward end and a rearward end and a longitudinal opening therethrough;

a retainer positioned in the body, wherein the retainer comprises a forward section, a rearward section, and a bore extending therethrough;

a ring movably disposed in the rearward section of the retainer, the ring comprising a side having an outer surface, an inner surface, and a pusher feature; and

a gripping member friction fit to the body proximal the rearward end, wherein the gripping member comprises a base and at least one spring finger extending longitudinally from the base, and wherein the at least one spring finger is radially inwardly biased in a predisposed orientation;

wherein the pusher feature of the ring is configured to axially move the ring upon force being applied to the pusher feature by a coaxial cable received by the body, and wherein the gripping member is configured to engage the jacket of the coaxial cable when the ring is axially moved such that the coaxial cable is installed in the coaxial cable connector, and wherein the coaxial cable connector is tool-lessly attached to the coaxial cable thereby.

2. The coaxial cable connector of claim 1, wherein the pusher feature comprises a flange, wherein the flange projects radially inwardly from the inner surface of the ring.

3. The coaxial cable connector of claim 1, wherein the base of the gripping member comprises an annular shoulder extending radially outwardly from the base, and wherein the gripping member is friction fit to an internal surface of the body at the annular shoulder.

4. The coaxial cable connector of claim 1, wherein the at least one spring finger comprises a plurality of spring fingers.

5. The coaxial cable connector of claim 4, wherein a slot separates adjacent ones of the plurality of spring fingers.

6. The coaxial cable connector of claim 4, wherein the gripping member comprises an annular ridge projecting radially inwardly from the plurality of spring fingers, wherein the annular ridges are configured to engage the jacket of the coaxial cable.

7. The coaxial cable connector of claim 1, wherein the retainer comprises an interface between the forward section and the rearward section.

8. A coaxial cable connector for attachment to an end of a coaxial cable, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, and a jacket surrounding the outer conductor, the coaxial cable connector comprising:

a body having a forward end and a rearward end, wherein an internal surface extends between the forward end and the rearward end, the internal surface defining a longitudinal opening along a longitudinal axis, and wherein the body comprises a cable receiving area proximal the rearward end;

a retainer positioned in the body proximal the forward end of the body, wherein the retainer comprises a forward section, a rearward section, and a bore extending through the retainer along the longitudinal axis and opening at the forward section at a forward face and the rearward section at a rear opening, and wherein the forward section is friction fit to the internal surface of the body at the forward end of the body;

a ring disposed in the rearward section of the retainer, the ring comprising a side with an outer surface and an inner surface, the inner surface defining a hollow space extending through the ring, and a pusher feature, wherein the ring is axially movable from a first location to a second location;

a gripping member friction fit to the body proximal the rearward end, wherein the gripping member comprises a base and at least one spring finger extending longitudinally from the base, and wherein the at least one spring finger is radially inwardly biased in a predisposed orientation; and

wherein, in a first state, the ring is disposed in the first location at the rear opening of the retainer with the side extending at least partially therethrough, and wherein the at least one spring finger is engaged with the outer surface of the side of the ring, and wherein the at least one spring finger is forced radially outwardly thereby; and

wherein, in a second state, the ring is in the second location positioned out of the gripping member, and wherein the at least one spring finger is disengaged from the outer surface of the ring, and wherein the at least one spring finger is allowed to move radially inwardly to its predisposed orientation.

9. The coaxial cable connector of claim 8, wherein the ring is moved from the first location to the second location by force applied to the pusher feature.

10. The coaxial cable connector of claim 8, wherein the ring comprises a first end and a second end, wherein the pusher feature comprises a flange, wherein the flange projects radially inwardly at the first end of the ring, and wherein the side of the ring extends toward the second end of the ring.

11. The coaxial cable connector of claim 10, wherein the first end of the ring is positioned within the rearward section of the retainer in the first state and the second state.

12. The coaxial cable connector of claim 8, wherein in the second state, the ring is positioned axially more forward than when the ring is positioned in the first state.

13. The coaxial cable connector of claim 8, wherein the base of the gripping member comprises a cable passage, the cable passage opening rearwardly to the cable receiving area of the body and extending forwardly to the at least one spring finger.

14. The coaxial cable connector of claim 8, wherein the base of the gripping member comprises an annular shoulder extending radially outwardly from the base, wherein the gripping member is friction fit to an internal surface of the base at the annular shoulder.

15. The coaxial cable connector of claim 14, wherein the annular shoulder comprises an outward barb, wherein the outward barb contacts the internal surface of the body to secure the friction fit of the gripping member to the body.

16. The coaxial cable connector of claim 8, wherein the at least one spring finger comprises a plurality of spring fingers.

17. The coaxial cable connector of claim 16, wherein a slot separates adjacent ones of the plurality of spring fingers.

18. The coaxial cable connector of claim 16, wherein the gripping member comprises an annular ridge radially inwardly projecting from the plurality of spring fingers.

19. The coaxial cable connector of claim 8, wherein the bore comprises a transverse internal dimension generally orthogonal to the longitudinal axis, and wherein the transverse internal dimension of the bore at the forward section of the retainer is less than the transverse internal dimension of the bore at the rearward section of the retainer.

20. A post-less, self-gripping coaxial cable connector for tool-less attachment to an end of a coaxial cable, the coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, and a jacket surrounding the outer conductor, the coaxial cable connector comprising:

a body having a forward end and a rearward end, wherein an internal surface extends between the forward end and the rearward end, the internal surface defining a longitudinal opening along a longitudinal axis, and wherein the body comprises a cable receiving area proximal the rearward end;

a retainer positioned in the body proximal the forward end of the body, wherein the retainer comprises a forward section, a rearward section, and a bore extending through the retainer along the longitudinal axis and opening at the forward section at a forward face and at the rearward section at a rear opening, and wherein the forward section is friction fit to the internal surface of the body at the forward end of the body;

a ring movably disposed in the rearward section of the retainer proximal the rear opening, the ring comprising a side and a pusher feature, wherein the side has an outer surface and an inner surface, the inner surface defining a hollow space extending through the ring, and wherein the side extends out from the rear opening of the retainer, and wherein the ring is axially movable from a first location to a second location by force applied to the pusher feature;

a gripping member friction fit to the body proximal the rearward end, wherein the gripping member comprises a base and at least one spring finger extending from the base, and wherein the at least one spring finger is radially inwardly biased in a predisposed orientation; and

wherein, in a first state, the ring is in the first location and wherein the side of the ring extended out from the retainer is positioned within the gripping member, and wherein the at least one spring finger is engaged with the outer surface of the ring, and wherein the at least one spring finger is forced radially outwardly thereby, and wherein the body is configured to receive at the cable receiving area a coaxial cable and allow the coaxial cable to advance through the gripping member and into the ring at the rearward section of the retainer, and the jacket of the coaxial cable to contact the pusher feature of the ring in the rearward section, and the inner conductor, dielectric, and outer conductor of the coaxial cable to advance from the rearward section of the retainer into the forward section of the retainer;

and, wherein, in a second state, the ring is configured to axially move to the second location wherein the side of the ring is positioned out of the gripping member as the coaxial cable is advanced in the body, and wherein the dielectric of the coaxial cable and at least a portion of the outer conductor of the coaxial cable position flush with the forward face of the retainer, and wherein the inner conductor extends forwardly of the forward face of the retainer, and wherein the at least one spring finger is disengaged from the outer surface of the ring and is allowed to move radially inwardly toward its predisposed orientation and engage the jacket of the coaxial cable, and wherein the coaxial cable connector is tool-lessly attached to the coaxial cable thereby.

21. The coaxial cable connector of claim 20, wherein the pusher feature comprises a flange, and wherein the flange projects radially inwardly from the inner surface of the ring.

22. The coaxial cable connector of claim 20, wherein the retainer comprises an interface between the forward section and the rearward section.

23. The coaxial cable connector of claim 22, wherein the interface of the retainer is configured to facilitate electrical continuity between the retainer and the outer conductor of the coaxial cable.

24. The coaxial cable connector of claim 23, wherein the outer conductor of the coaxial cable comprises a foil and a braided outer conductor, and wherein an end of the conductive foil positions flush with the forward face of the retainer, and wherein the interface is configured to block further advance of the braid and facilitate electrical continuity with the braid at the interface.

25. A method for tool-lessly attaching a post-less, self-gripping coaxial cable connector to a coaxial cable, the method comprising:

providing a coaxial cable comprising an inner conductor, a dielectric surrounding the inner conductor, an outer conductor surrounding the dielectric, and a jacket surrounding the outer conductor;

preparing the coaxial cable by exposing a first predetermined length of the inner conductor, and a second predetermined length of the outer conductor, the outer conductor covering the dielectric;

inserting the prepared coaxial cable into a body of a coaxial cable connector at a base of a gripping member friction fit to the body proximal to a rearward end of the body, wherein the coaxial cable connector is in a first state;

advancing the coaxial cable through a base of the gripping member and through at least one spring finger extending longitudinally from the base of the gripping member and into a ring movably disposed in a first location in a rearward section of a retainer, the retainer being friction fit to the body at a forward section of the body, wherein the ring comprises a pusher feature for axially moving the ring from the first location to a second location;

axially moving the ring from the first location to the second location by the jacket of the coaxial cable forcing the pusher feature, wherein the ring in the second location is positioned in a forward section of the retainer, wherein the retainer comprises a forward face at the forward section, and wherein the coaxial cable connector is in a second state, wherein the dielectric of the coaxial cable and at least a portion of the outer conductor of the coaxial cable position flush with the forward face of the retainer, and wherein the inner conductor extends forwardly of the forward face of the retainer, and wherein the at least one spring finger engages the jacket of the coaxial cable, and wherein the coaxial cable connector is tool-lessly attached to the coaxial cable thereby.