The present disclosure relates to cable connectors; and more particularly, to a new and improved connector for connecting a coaxial cable to a RF device, such as, a home entertainment s television set, or other device.
The present disclosure is directed to a connector including a post, a sleeve or body member, and a coupling member each having a flange member, The flange members of the sleeve and coupling member have recesses each defining an internal contact surface separated by an axial gap. The connector also includes an arcuate bridge member radially biased outwardly against at least one of the internal contact surfaces and spanning the axial gap. The arcuate bridge member maintains an electrical ground path across the axial gap even when the sleeve does not electrically contact the coupling member.
Another embodiment of the connector relates to a coaxial cable connector wherein the recesses include at least one conical surface which is responsive to a radially biased conductive bridge member o produce a radial force against the internal contact surfaces such that an axial force component is generated along the conical surface. The conductive bridge member spans the axial gap so as to maintain an electrical ground path across the axial gap even when the sleeve does not electrically contact the coupling member. Furthermore, the conductive bridge member constantly biases the flange of the coupling member against the flange of the post to urge the post against an interface port.
In one embodiment the conductive bridge member is an arcuate bridge member having an outwardly directed contact surface complementing the conical surface of the internal contact surface. In another embodiment, the conductive bridge member is a coil spring having a diameter dimension which is oversized relative to the size of the recesses such that when the connector is in an assembled state, the coil spring deforms radially such that an axial component of force is produced. Specifically, the axial component is produced by the interaction of the coil spring with the conical surface of the coupling member.
Another embodiment relates to a coaxial cable connector wherein a sealing member is disposed between the flange of the post and the inwardly directed flange of the coupling member.
The present disclosure will become more readily appreciated and understood from consideration of the following detailed description of various embodiments of the present invention when taken together with the accompanying drawings, in which:\
Various embodiments disclosed herein provide for a novel and improved compression connector for cables, and specifically, for coaxial cables. For example, in F-connectors designed specifically for connection to a port or terminal of an entertainment or security system, an electrically conductive, watertight seal is disclosed herein for use in combination with an annular coupling member to maintain optimum electrical conductivity between the coaxial cable and port. In one embodiment, an electrically conductive seal is in the form of a rubber or resilient 0-ring containing electrically conductive particles and is mounted so as to be compressible between a port and the end of the cable connector.
In another embodiment, a conductive spring is utilized in combination with an elastomeric seal and a spring mounted between opposing or confronting surface portions of an outer connector sleeve and a coupling member. In still another embodiment, a conductive spring in the form of an arcuate band is mounted between the opposing or confronting surface portions of the connector sleeve and coupling member, but spaced or removed away from the seal member.
Coaxial cables often include inner and outer concentric conductors separated by a dielectric insulator and encased or covered by an outer jacket of a rubber-like material. Numerous end connectors have been devised to effect a secure mechanical and electrical connection between a connector assembly (e.g., a coaxial cable connector) and the end of the coaxial cable, typically by having the inner conductor and dielectric insulator extend through an inner sleeve of the connector assembly while the outer conductor and jacket are inserted into an annular space between the inner sleeve and an outer sleeve. The outer sleeve is then crimped in a radially inward direction or otherwise compressed, etc. to securely clamp the end of the cable within the connector, and a fastener such as a nut on the opposite end of the connector is then connected to a port or terminal.
U.S. Pat. No. 5,975,949 illustrates a coaxial cable connector of the type described and with a somewhat modified form of watertight seal which is interposed between confronting surface portions of a flange at the end of the inner sleeve and the end of a coupling member which extends from the post or terminal. Nevertheless, in certain applications, there is a continuing need for a compression-type coaxial cable and connector which can achieve improved. mechanical and electrical connection between the coaxial cable connector and the port or terminal including a novel and improved watertight but electrically conductive seal which will maintain the necessary conductivity and which is mounted in such a way as to resist accidental loosening of the coupling member between the connector and port or terminal.
Referring in more detail to the drawings, one embodiment is illustrated in
In one embodiment, inner and outer sleeves 12 and 18 extend rearwardly from the entrance end in spaced concentric relation to one another so as to form an annular space 32 therebetween for insertion of a standard cable C in a manner to be described. Inner sleeve 12 may be of substantially uniform wall thickness for its greater length and have a plurality of axially spaced, annular serrations along its outer wall surface and toward the entrance end. Outer sleeve 18 may be thin-walled along its greater length, but gradually increases in thickness to define an external convex surface portion 36 and which has a plurality of axially spaced sealing rings or grooves 38 in accordance with U.S. Pat. No. 5,501,616.
According to an exemplary embodiment, a crimping ring 44 (compression member, etc.) of generally cylindrical configuration may be configured to extend over at least a portion of outer sleeve 18, and may have a length generally corresponding to the length of the thin-walled sections of outer sleeve 18. In some embodiments, member 44 includes an inner liner 46 that may be of uniform thickness and diameter throughout which terminates in opposed beveled ends, and an outside band 48 that may be of generally uniform thickness and diameter throughout at least a portion of its length and may be coextensive with inner liner 46. In some embodiments, inner liner 46 is composed of a material having a slight amount of give or resilience; and outer band 48 is composed of a material having little or no give or compressibility, such as, a brass material. Inner liner 46 and band 48 may in some embodiments be of substantially corresponding thickness, and inner liner 46 may be mounted in a press-fit or other fashion inside of band 48, with its inner wall surface being of a diameter corresponding to or slightly greater than the outer diameter of outer sleeve 18 at its entrance end. Inner liner 46 may in some embodiments have an inner diameter less than the convex surface portion 36 on outer sleeve 18 so that when ring 44 is axially advanced, ring 44 will impart inward radial deformation to the convex surface portion of outer sleeve 18 causing it to be contracted, as illustrated in
The cable C is connected to the connector 10 in the usual manner by first preparing the leading end of the cable to fold the braided layer B over the end of the jacket J, as illustrated in
Once the installation is completed, a starter guide, if used, may be removed from the end of the pin conductor and discarded. A compression tool (not shown) is shown and described in detail in U.S. Pat. No. 6,708,396 which is incorporated by reference herein. While the Figures herein generally show a compression member moving axially over a compressible outer sleeve to secure a coaxial cable relative to the coaxial connector, other forms of securing the cable may be used, such as a deformable locking sleeve being axially compressed within a connector body to similarly secure the coaxial cable in position. All such alternative embodiments are to be understood to be within the scope of the present disclosure.
Port or terminal may have a hollow externally threaded extension 50 to receive the inner conductor pin of the cable C and is coupled to the end of the connector 10 by a coupling member, such as, a nut 52 which is internally threaded with threads 58 to mate with the external threading on extension 50 whereby to draw extension 50 toward and/or into engagement with flange 16 on the end of inner sleeve or post 12 of connector 10. In order to provide for improved conductivity between connector 10 and port P, and in particular to maintain the necessary conductivity notwithstanding a poor connection or loosening of the coupling members between the conductor pin and port P. an electrically conductive, watertight annular seal 54 (e.g., a conductive O-ring, resilient member, elastomeric member, etc.) may mounted in a groove 14 adjacent to flange 16 and coupling member 52.
Coupling member 52 may extend forwardly from an end wall 56 over and beyond flange 16, and may be internally threaded to facilitate connection to extension 50 of the port P. Exterior surface 60 of coupling member 52 may be provided with suitable flats (e.g., a generally hexagonal configuration, etc.) for engagement by a wrench or other suitable tool to rotate coupling member 52 independently from the remainder of connector 10.
According to an exemplary embodiment, seal 54 may take the form of an O-ring, and may be composed of an elastomeric material having electrically conductive particles uniformly or non-uniformly distributed within seal 54, one example of such particles being carbon fibers. In the loosely assembled position shown in
It will be appreciated that seal 54 will maintain the necessary contacting relationship between the fronting surfaces notwithstanding a slight loosening between the parts, such as, as a result of temperature changes or wear. An important advantage of utilizing a watertight, conductive seal as one member or unit is that it serves a dual function of providing a watertight seal which is also electrically conductive; and at the same time the seal diameter may be varied to compensate for differences in connector size and the gap between the confronting surfaces of flange 16 and end wall 56, as well as variations in type of connector.
As best seen from the end view of
Another embodiment of a conductive ring is illustrated in
In
According to alternative embodiments, the conductive ring members 70 and 80 could be composed of various materials or composite materials which would offer the same characteristics of resiliency and conductivity. For example, one or both of members 70 and 80 could be composed of an inner matrix of plastic with an outer coating of a conductive material, such as, the carbon fibers referred to in connection with
Although the different forms of connector sleeves are illustrated for use in F-connectors as in
In other embodiments of the disclosure shown in
In the described embodiment, each of the recesses 72a, 72b of the coupling member 52 and outer sleeve 18, also define outwardly directed contact surfaces 96 and 98, respectively, which are similarly spaced along the elongate axis 10A. Moreover, the inwardly and outwardly directed contact surfaces 92, 96 of the coupling member 52 and the inwardly and outwardly directed contact surfaces 94, 98 of the outer sleeve 18 each define a radial gap GR. Moreover, at the point where the sleeve and coupling member 18, 52 are separated, the inwardly and outwardly directed contact surfaces 92, 94, 96, 98 are essentially equidistant from the elongate axis 10A of the connector 10.
The conductive band or arcuate bridge member 70H is similar to the previously described flat band embodiment, however, the arcuate bridge member 70H defines an outwardly directed contact surface 95 (See
In the described embodiment, the positively inclined, internal, contact surface 92 of the arcuate bridge member 70H defines an angle a within a range of approximately thirty degrees (30°) to sixty degrees (60°). Similarly, the internal contact surface 92 of the coupling member 52 defines a negatively sloping surface within the same thirty to sixty degree range (30°-60°).
While the internal contact surface 94 of the outer sleeve 18 is shown to be parallel to the elongate axis 10A, or a straight angle, it should be appreciated that the internal contact surface 94 may form other complementary configurations. For example, the arcuate bridge member 70H may include an outwardly directed flange 97 for being received within an annular notch or groove in the internal contact surface 94 of the outer sleeve 18. The notch or groove 99 may function to retain the arcuate bridge member 70H within the outer sleeve of the connector 10, or to preposition the arcuate bridge member 70H during transport and assembly of the connector 10.
The arcuate bridge member 7 spans the gap GP (
In the described embodiment, the arcuate bridge member 70H may be fabricated from a resilient conductive material such as a copper alloy having a mixture of copper, tin and steel to provide the proper spring stiffness. Alternatively, the arcuate bridge member 70H may be fabricated from a thermoplastic having a conductive coating bonded to the outwardly directed contact surface of the arcuate bridge member 70H.
In
Additional embodiments include any one of the embodiments described above, where one or more of its components, functionalities or structures is interchanged with, replaced. by or augmented by one or more of the components, functionalities or structures of a different embodiment described above.
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.
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.
This is a continuation of U.S. application Ser. No. 15/650,521, filed on Jul. 14, 2017, pending, which is a continuation of U.S. application Ser. No. 14/920,150, filed on Oct. 22, 2015, entitled “BAND SPRING CONTINUITY MEMBER FOR COAXIAL CABLE CONNECTOR,” now U.S. Pat. No. 9,711,917, which is a continuation-in-part of U.S. application Ser. No. 13/479,123, filed on May 23, 2012, entitled “COAXIAL CABLE CONNECTOR WITH CONDUCTIVE SEAL,” now U.S. Pat. No. 9,203,167, which claims the benefit of U.S. Provisional Patent Application No. 61/490,373, filed on May 26, 2011. The entire contents of such applications are hereby incorporated by reference in their em
Number | Date | Country | |
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61490373 | May 2011 | US |
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Parent | 15650521 | Jul 2017 | US |
Child | 16922992 | US | |
Parent | 14920150 | Oct 2015 | US |
Child | 15650521 | US |
Number | Date | Country | |
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Parent | 13479123 | May 2012 | US |
Child | 14920150 | US |