Coaxial cable connectors having port grounding
11545796 · 2023-01-03
Assignee
Inventors
- Harold Watkins (Chittenango, NY, US)
- Richard Maroney (Camillus, NY, US)
- Amos McKinnon (Liverpool, NY, US)
- Noah P. Montena (Syracuse, NY, US)
Cpc classification
H01R13/6583
ELECTRICITY
International classification
Abstract
A coaxial cable connector includes a body configured to engage a coaxial cable having a conductive electrical grounding property, a post configured to engage the body and the coaxial cable when the connector is installed on the coaxial cable, a nut configured to engage an interface port at a retention force, and a conductive insert received inside the nut. The conductive insert is configured to increase the retention force between the nut and the interface port so as to provide an electrical ground connection between the interface port and the nut when the nut is in a loosely tightened position on the interface port, and/or the conductive insert is configured to make the electrical ground connection with the interface port before a center conductor of the coaxial cable makes an electrical connection with an internal contact of the interface port when the nut is coupled with the interface port.
Claims
1. A coaxial cable connector comprising: a body configured to engage a coaxial cable having a conductive electrical grounding property; a post configured to engage the body and the coaxial cable when the connector is installed on the coaxial cable; a nut configured to engage an interface port with a retention force; a conductive insert; wherein the nut includes an inner surface configured to include a threaded portion and an annular groove between the threaded portion and a forward end of the nut; wherein the conducive insert includes a first portion configured to be received in the annular groove; wherein the first portion of the conductive insert is configured to include curved biasing members that are configured to extend radially inward from the annular groove so as to increase the retention force between the nut and the interface port and provide an electrical ground connection between the interface port and the nut, even when the nut is in a loosely tightened position on the interface port; and wherein the conductive insert is configured to include grounding members that are configured to extend from the first portion in the annular groove to beyond the forward end of the nut such that the grounding members are configured to make the electrical ground connection with the interface port before a center conductor of the coaxial cable makes an electrical connection with an internal contact of the interface port when the nut is coupled with the interface port.
2. The coaxial cable connector of claim 1, wherein the conductive insert is configured to include a first ring portion and a second ring portion; wherein the curved biasing members are configured to extend from the first ring portion to the second ring portion; wherein the first ring portion and the second ring portion are configured to be received in the annular groove; and wherein the grounding members are configured to extend from the first ring portion.
3. The coaxial cable connection or claim 1, wherein the nut is configured to include an annular lip adjacent the forward end; and wherein the annular groove is configured to extend from the annular lip to a forward facing surface of the threaded portion.
4. A coaxial cable connector comprising: a body configured to engage a coaxial cable having a conductive electrical grounding property; a post configured to engage the body and the coaxial cable when the connector is installed on the coaxial cable; a nut configured to engage an interface port; a conductive insert; wherein the nut includes a inner surface configured to include a threaded portion and an annular groove between the threaded portion and a forward end of the nut; wherein the conductive insert includes a first portion configured to be received in the annular grove; and wherein the conductive insert is configured to include grounding members that are configured to extend from the first portion in the annular groove to beyond the forward end of the nut such that the grounding members are configured to make the electrical ground connection with the interface port before a center conductor of the coaxial cable makes an electrical connection with an internal contact of the interface port when the nut is coupled with the interface port.
5. The coaxial cable connector of claim 4, wherein the threaded portion is configured to engage the interface port with a retention force.
6. The coaxial cable connector of claim 5, wherein the conductive insert includes curving biasing members configured to define an inner diameter smaller than an outer diameter of the interface port.
7. The coaxial cable connector of claim 6, wherein the curved biasing members are configured to curve radially from a first diameter at a rearward end portion to a second smaller diameter at a middle portion.
8. The coaxial cable connector of claim 7, wherein the curved biasing members are configured to curve radially outward from the middle portion to a front end portion.
9. The coaxial cable connector of claim 8, wherein the middle portion is configured to increase the retention force between the nut and the interface port.
10. The coaxial cable connector of claim 4, wherein the conductive insert is configured to include a first ring portion, a second ring portion, and curved biasing members configured to extend from the first ring portion to the second ring portion; wherein the first ring portion and the second ring portion are configured to be received in the annular groove; and wherein the grounding members are configured to extend from the first ring portion.
11. The coaxial cable connection or claim 4, wherein the nut is configured to include an annular lip adjacent the forward end; and wherein the annular groove is configured to extend from the annular lip to a forward facing surface of the threaded portion.
12. A coaxial cable connector comprising: a nut configured to engage an interface port; a conductive insert; wherein the nut includes an inner surface configured to include a threaded portion and an annular groove between the threaded portion and a forward end of the nut; wherein the conductive insert includes a first portion configured to be received in the annular groove; and wherein the conductive insert is configured to include grounding members that are configured to extend from the first portion in the annular groove to beyond the forward end of the nut such that the grounding members are configured to make an electrical ground connection with the interface port before a center conductor of a coaxial cable terminated by the nut makes an electrical connection with an internal contact of the interface port when the nut is coupled with the interface port.
13. The coaxial cable connector of claim 12, wherein the threaded portion of the nut is configured to engage the interface port with a retention force.
14. The coaxial cable connector of claim 13, wherein the conductive insert includes a curved biasing member configured to define an inner diameter smaller than an outer diameter of the interface port.
15. The coaxial cable connector of claim 14, wherein the curving biasing member is configured to curve radially inward from a first diameter at a rearward end portion to a second smaller diameter at a middle portion.
16. The coaxial cable connector of claim 15, wherein the curved biased member is configured to curve radially outward from the middle portion to a front end portion.
17. The coaxial cable connector of claim 16, wherein the middle portion is configured to increase the retention force between the nut and the interface port.
18. The coaxial cable connector of claim 12, wherein the conductive insert is configured to include a first ring portion, a second ring portion, a curved biasing member configured to extend from the first ring portion to the second ring portion; wherein the first ring portion and the second ring portion are configured to be received in the annular groove; and wherein the grounding members are configured to extend from the first ring portion.
19. The coaxial cable connection or claim 12, wherein the nut is configured to include an annular lip adjacent the forward end; and wherein the annular groove is configured to extend from the annular lip to a forward facing surface of the threaded portion.
20. The coaxial cable connector of claim 12, wherein the conductive insert is configured to include a first ring portion, a second ring portion, a curved biasing member configured to extend from the first ring portion to the second ring portion; wherein the first ring portion and the second ring portion are configured to be received in the annular groove; and wherein the grounding members are configured to extend from the first ring portion.
21. The coaxial cable connection or claim 12, wherein the nut is configured to include an annular lip adjacent the forward end; and wherein the annular groove is configured to extend from the annular lip to a forward facing surface of the threaded portion.
22. A coaxial cable connector comprising: a first portion configured to terminate a coaxial cable; a nut configured to be rotatingly coupled to the first portion and to engage an interface port; a conductive insert; wherein the nut includes an inner surface configured to include a threaded portion and an annular groove between the threaded portion and a forward end of the nut; wherein the conductive insert includes a first portion configured to be received in the annular groove; and wherein the conductive insert is configured to include grounding members that are configured to extend from the first portion in the annular groove to beyond the forward end of the nut such that the grounding members are configured to make the electrical ground connection with the interface port before a center conductor of a coaxial cable makes an electrical connection with an internal contact of the interface port when the nut is coupled with the interface port.
23. The coaxial cable connector of claim 22, wherein the threaded portion is configured to engage the interface port with a retention force.
24. The coaxial cable connector of claim 23, wherein the conductive insert includes a curved biasing member configured to define an inner diameter smaller than an outer diameter of the interface port.
25. The coaxial cable connector of claim 24, wherein the curved biasing member is configured to curve radially inward from a first diameter at a rearward end portion to a second smaller diameter at a middle portion.
26. The coaxial cable connector of claim 25, wherein the curved biasing member is configured to curve radially outward from the middle portion to a front end portion.
27. The coaxial cable connector of claim 26, wherein the middle portion is configured to increase the retention force between the nut and the interface port.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Features and advantages of the present disclosure are described in, and will be apparent from, the following Brief Description of the Drawings and Detailed Description.
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DETAILED DESCRIPTION OF EMBODIMENTS
(25) The accompanying figures illustrate various exemplary embodiments of coaxial cable connectors that provide improved grounding between the coaxial cable, the connector, and the coaxial cable connector interface port. Although certain embodiments of the present invention are shown and described in detail, it should be understood that various changes and modifications may be made without departing from the scope of the appended claims. The scope of the present invention will in no way be limited to the number of constituting components, the materials thereof, the shapes thereof, the relative arrangement thereof, etc., and are disclosed simply as an example of embodiments of the present invention.
(26) As a preface to the detailed description, it should be noted that, as used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents, unless the context clearly dictates otherwise.
(27) Referring to the drawings,
(28) Referring further to
(29) Referring still further to
(30) The threaded nut 30 of the coaxial cable connector 100 has a first forward end 31 and opposing second rearward end 32. The threaded nut 30 may comprise internal threading 33 extending axially from the edge of first forward end 31 a distance sufficient to provide operably effective threadable contact with the external threads 23 of the standard coaxial cable interface port 20. The threaded nut 30 includes an internal lip 34, such as an annular protrusion, located proximate the second rearward end 32 of the nut. The internal lip 34 includes a surface 35 facing the first forward end 31 of the nut 30. The forward facing surface 35 of the lip 34 may be a tapered surface or side facing the first forward end 31 of the nut 30. The structural configuration of the nut 30 may vary according to differing connector design parameters to accommodate different functionality of a coaxial cable connector 100. For instance, the first forward end 31 of the nut 30 may include internal and/or external structures such as ridges, grooves, curves, detents, slots, openings, chamfers, or other structural features, etc., which may facilitate the operable joining of an environmental sealing member, such a water-tight seal or other attachable component element, that may help prevent ingress of environmental contaminants, such as moisture, oils, and dirt, at the first forward end 31 of a nut 30, when mated with the interface port 20. Moreover, the second rearward end 32 of the nut 30 may extend a significant axial distance to reside radially extent, or otherwise partially surround, a portion of the connector body 50, although the extended portion of the nut 30 need not contact the connector body 50. The threaded nut 30 may be formed of conductive materials, such as copper, brass, aluminum, or other metals or metal alloys, facilitating grounding through the nut 30. Accordingly, the nut 30 may be configured to extend an electromagnetic buffer by electrically contacting conductive surfaces of an interface port 20 when a connector 100 is advanced onto the port 20. In addition, the threaded nut 30 may be formed of both conductive and non-conductive materials. For example, the external surface of the nut 30 may be formed of a polymer, while the remainder of the nut 30 may be comprised of a metal or other conductive material. The threaded nut 30 may be formed of metals or polymers or other materials that would facilitate a rigidly formed nut body. Manufacture of the threaded nut 30 may include casting, extruding, cutting, knurling, turning, tapping, drilling, injection molding, blow molding, combinations thereof, or other fabrication methods that may provide efficient production of the component. The forward facing surface 35 of the nut 30 faces a flange 44 of the post 40 when operably assembled in a connector 100, so as to allow the nut to rotate with respect to the other component elements, such as the post 40 and the connector body 50, of the connector 100.
(31) Referring still to
(32) The coaxial cable connector 100 may include a connector body 50. The connector body 50 may comprise a first end 51 and opposing second end 52. Moreover, the connector body may include a post mounting portion 57 proximate or otherwise near the first end 51 of the body 50, the post mounting portion 57 configured to securely locate the body 50 relative to a portion of the outer surface of post 40, so that the connector body 50 is axially secured with respect to the post 40, in a manner that prevents the two components from moving with respect to each other in a direction parallel to the axis of the connector 100. The internal surface of the post mounting portion 57 may include an engagement feature 54 that facilitates the secure location of the grounding member 98 with respect to the connector body 50 and/or the post 40, by physically engaging the grounding member 98 when assembled within the connector 100. The engagement feature 54 may simply be an annular detent or ridge having a different diameter than the rest of the post mounting portion 57. However other features such as grooves, ridges, protrusions, slots, holes, keyways, bumps, nubs, dimples, crests, rims, or other like structural features may be included to facilitate or possibly assist the positional retention of embodiments of the electrical grounding member 98 with respect to the connector body 50. Nevertheless, embodiments of the grounding member 98 may also reside in a secure position with respect to the connector body 50 simply through press-fitting and friction-fitting forces engendered by corresponding tolerances, when the various coaxial cable connector 100 components are operably assembled, or otherwise physically aligned and attached together. Various exemplary grounding members 98 are illustrated and described in U.S. Pat. No. 8,287,320, the disclosure of which is incorporated herein by reference. In addition, the connector body 50 may include an outer annular recess 58 located proximate or near the first end 51 of the connector body 50. Furthermore, the connector body 50 may include a semi-rigid, yet compliant outer surface 55, wherein an inner surface opposing the outer surface 55 may be configured to form an annular seal when the second end 52 is deformably compressed against a received coaxial cable 10 by operation of a fastener member 60. The connector body 50 may include an external annular detent 53 located proximate or close to the second end 52 of the connector body 50. Further still, the connector body 50 may include internal surface features 59, such as annular serrations formed near or proximate the internal surface of the second end 52 of the connector body 50 and configured to enhance frictional restraint and gripping of an inserted and received coaxial cable 10, through tooth-like interaction with the cable. The connector body 50 may be formed of materials such as plastics, polymers, bendable metals or composite materials that facilitate a semi-rigid, yet compliant outer surface 55. Further, the connector body 50 may be formed of conductive or non-conductive materials or a combination thereof. Manufacture of the connector body 50 may include casting, extruding, cutting, turning, drilling, knurling, injection molding, spraying, blow molding, component overmolding, combinations thereof, or other fabrication methods that may provide efficient production of the component.
(33) With further reference to
(34) The manner in which the coaxial cable connector 100 may be fastened to a received coaxial cable 10 may also be similar to the way a cable is fastened to a common CMP-type connector having an insertable compression sleeve that is pushed into the connector body 50 to squeeze against and secure the cable 10. The coaxial cable connector 100 includes an outer connector body 50 having a first end 51 and a second end 52. The body 50 at least partially surrounds a tubular inner post 40. The tubular inner post 40 has a first end 41 including a flange 44 and a second end 42 configured to mate with a coaxial cable 10 and contact a portion of the outer conductive grounding shield or sheath 14 of the cable 10. The connector body 50 is secured relative to a portion of the tubular post 40 proximate or close to the first end 41 of the tubular post 40 and cooperates, or otherwise is functionally located in a radially spaced relationship with the inner post 40 to define an annular chamber with a rear opening. A tubular locking compression member may protrude axially into the annular chamber through its rear opening. The tubular locking compression member may be slidably coupled or otherwise movably affixed to the connector body 50 to compress into the connector body and retain the cable 10 and may be displaceable or movable axially or in the general direction of the axis of the connector 100 between a first open position (accommodating insertion of the tubular inner post 40 into a prepared cable 10 end to contact the grounding shield 14), and a second clamped position compressibly fixing the cable 10 within the chamber of the connector 100, because the compression sleeve is squeezed into retraining contact with the cable 10 within the connector body 50.
(35) Referring to
(36) In some aspects, as shown in
(37) Referring again to
(38) It should be appreciated that in some aspects of the invention, the plurality of cantilevered fingers 285 can be connected to and extend rearward from the forward split ring 288 instead of the rearward split ring 278. In other aspects, some of the plurality of cantilevered fingers 285 can be connected to and extend forwardly from the rearward split ring 278 and some of the plurality of cantilevered fingers 285 can be connected to and extend rearward from the forward split ring 288.
(39) In some aspects, the radially innermost portion 296 may be nearer to the rearward split ring 278, in as shown
(40) It should be appreciated that the curved fingers 284 and the cantilevered fingers 285 extend radially inward beyond the valleys 239 of the threads of the internal threading 233 of the nut 230. Thus, when coupled with the threaded exterior surface 23 of the coaxial cable interface port 20, the curved fingers 284 and the cantilevered fingers 285 contact the threads of the threaded exterior surface 23 of the interface port 20 and are urged radially outward from their rest position. Thus, the radial inward bias of the curved fingers 284 and the cantilevered fingers 285 to return to their rest position promotes redundant contact, higher retention forces, and continuous grounding from the interface port 20 through to the post 40, even when the nut 230 is loosely connected (i.e., not fully tightened) to the interface port 20. It should also be appreciated that when the curved fingers 284 are urged radially outward, the rearward and forward split rings 278, 288 may be urged away from one another in the axial direction up to the limits imposed by the radial inward lip 237 at the forward end 231 of the nut and the forward-facing shoulder 238 at the forward end of the threaded region 233 of the nut 230.
(41) Referring now to
(42) Each of the fingers 384 includes a first portion 386 that extends forwardly and radially inward from the rearward split ring 378 to a radially innermost portion 396 and a second portion 387 that extends forwardly and radially outward from the radially innermost portion 396 to the forward split ring 388. As illustrated in
(43) It should be appreciated that the fingers 384 extend radially inward beyond threads of the internal threading 33 of the nut 30. Thus, when coupled with the threaded exterior surface 23 of the coaxial cable interface port 20, the fingers 384 promote redundant contact, higher retention forces, and continuous grounding from the interface port 20 through to the post 40, even when the nut 30 is loosely connected (i.e., not fully tightened) to the interface port 20.
(44) With reference to
(45) Referring now to
(46) In some aspects, as shown in
(47) The conductive insert 672 further includes a plurality of grounding fingers 695 that extend forwardly from the forward ring 688. Each of the grounding fingers 695 includes a first portion 686 that extends forwardly and radially inward from the forward split ring 688 to a radially innermost portion 696 and a second portion 687 that extends forwardly and radially outward from the radially innermost portion 696. Thus, the radially innermost portion 696 of each of the grounding fingers 695 is forward of the forward end 31 and the internal threading 633 of the nut 630. It should be appreciated that the radial inward lip 637 includes one or more lip portion that are spaced apart circumferentially about the forward end 631 of the nut 630 such that each lip portion is disposed between a pair of adjacent grounding fingers 695.
(48) As a result, the grounding fingers 695 can make contact with the interface port 20 before the center conductor 18 in order to create a ground from the interface port 20 through to the post 40 and thus limit burst that would otherwise occur upon insertion of the center conductor 18 into the interface port 20 in the absence of a ground.
(49) It should be appreciated that the curved fingers 684 and the grounding fingers 695 extend radially inward beyond the valleys 639 of the threads of the internal threading 633 of the nut 630. Thus, when coupled with the threaded exterior surface 23 of the coaxial cable interface port 20, the curved fingers 684 and the grounding fingers 695 contact the threads of the threaded exterior surface 23 of the interface port 20 and are urged radially outward from their rest position. Thus, the radial inward bias of the curved fingers 684 and the grounding fingers 695 to return to their rest position promotes redundant contact, higher retention forces, and continuous grounding from the interface port 20 through to the post 40, even when the nut 630 is loosely connected (i.e., not fully tightened) to the interface port 20. It should also be appreciated that when the curved fingers 684 are urged radially outward, the rearward and forward split rings 678, 688 may be urged away from one another in the axial direction up to the limits imposed by the radial inward lip 637 at the forward end 631 of the nut and the forward-facing shoulder 638 at the forward end of the threaded region 633 of the nut 630.
(50) It should be understood that various changes and modifications to the embodiments described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present disclosure and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims.
(51) Although several embodiments of the disclosure have been disclosed in the foregoing specification, it is understood by those skilled in the art that many modifications and other embodiments of the disclosure will come to mind to which the disclosure pertains, having the benefit of the teaching presented in the foregoing description and associated drawings. It is thus understood that the disclosure is not limited to the specific embodiments disclosed herein above, and that many modifications and other embodiments are intended to be included within the scope of the appended claims. Moreover, although specific terms are employed herein, as well as in the claims which follow, they are used only in a generic and descriptive sense, and not for the purposes of limiting the present disclosure, nor the claims which follow.