1. Technical Field
This invention relates generally to the field of connectors for coaxial cables. More particularly, this invention provides for a coaxial cable connector comprising at least one conductive member and a method of use thereof.
2. Related Art
Broadband communications have become an increasingly prevalent form of electromagnetic information exchange and coaxial cables are common conduits for transmission of broadband communications. Connectors for coaxial cables are typically connected onto complementary interface ports to electrically integrate coaxial cables to various electronic devices. In addition, connectors are often utilized to connect coaxial cables to various communications modifying equipment such as signal splitters, cable line extenders and cable network modules.
To help prevent the introduction of electromagnetic interference, coaxial cables are provided with an outer conductive shield. In an attempt to further screen ingress of environmental noise, typical connectors are generally configured to contact with and electrically extend the conductive shield of attached coaxial cables. Moreover, electromagnetic noise can be problematic when it is introduced via the connective juncture between an interface port and a connector. Such problematic noise interference is disruptive where an electromagnetic buffer is not provided by an adequate electrical and/or physical interface between the port and the connector. Weathering also creates interference problems when metallic components corrode, deteriorate or become galvanically incompatible thereby resulting in intermittent contact and poor electromagnetic shielding.
Accordingly, there is a need in the field of coaxial cable connectors for an improved connector design.
The present invention provides an apparatus for use with coaxial cable connections that offers improved reliability.
A first general aspect of the invention provides A connector for coupling an end of a coaxial cable, the coaxial cable having a center conductor surrounded by a dielectric, the dielectric being surrounded by a foil layer, the foil layer being surrounded by a conductive grounding shield, the conductive grounding shield being surrounded by a protective outer jacket, the connector comprising: a connector body attached to a post, wherein the post has a first end and a second end, the first end configured to be inserted into an end of the coaxial cable around the foil layer encompassing the dielectric and under the conductive grounding shield thereof; a rotatable coupling element attached to the post; and a conductive member positioned along an inner surface of the post facilitating continuous electrical communication between the foil layer and the post, when the first end of the post is inserted into the end of the coaxial cable around the foil layer encompassing the dielectric and under the conductive grounding shield thereof.
A second general aspect of the invention provides a connector for coupling an end of a coaxial cable, the coaxial cable having a center conductor surrounded by a dielectric, the dielectric being surrounded by a foil layer, the foil layer being surrounded by a conductive grounding shield, the conductive grounding shield being surrounded by a protective outer jacket, the connector comprising: a connector body attached to the post wherein the connector body includes a first end and a second end, the first end configured to deformably compress against and seal a received coaxial cable; a rotatable coupling element attached to the post; and a conductive member located along an inner surface of a post, wherein the conductive member facilitates the grounding of the coaxial cable by electrically coupling the foil layer to the post.
A third general aspect of the invention provides a connector for coupling an end of a coaxial cable, the coaxial cable having a center conductor surrounded by a dielectric, the dielectric being surrounded by a foil layer, the foil layer being surrounded by a conductive grounding shield, the conductive grounding shield being surrounded by a protective outer jacket, the connector comprising: a connector body, having a first end and a second end, the first end configured to deformably compress against and seal a received coaxial cable; a post, attached to the connector body, wherein the post includes a first end and a second end, the first end configured to be inserted into an end of the coaxial cable around the foil layer encompassing the dielectric and under the conductive grounding shield thereof; a port coupling element, attached to the post; and a plurality of conductive members, wherein at least one of the plurality of conductive members is positioned along an inner surface of the post, and further wherein the plurality of conductive members helps complete a shield preventing ingress of electromagnetic noise into the connector and facilitates grounding of the coaxial cable.
A fourth general aspect of the invention provides a connector for coupling an end of a coaxial cable, the coaxial cable having a center conductor surrounded by a dielectric, the dielectric being surrounded by a foil layer, the foil layer being surrounded by a conductive grounding shield, the conductive grounding shield being surrounded by a protective outer jacket, the connector comprising: a connector body having a first end and a second end, the first end configured to deformably compress against and seal a received coaxial cable; a post attached to the connector body, wherein the post includes a first end and a second end, the first end configured to be inserted into an end of the coaxial cable around the foil layer encompassing the dielectric and under the conductive grounding shield thereof; a port coupling element attached to the post; and means for electrically coupling the post and the foil layer, thereby establishing electrical continuity about the dielectric.
A fifth general aspect of the invention provides a method for grounding a coaxial cable through a connector, the coaxial cable having a center conductor surrounded by a dielectric, the dielectric being surrounded by a foil layer, the foil layer being surrounded by a conductive grounding shield, the conductive grounding shield being surrounded by a protective outer jacket, the method comprising: providing a coaxial cable connector having a post positioned within a connector body of the coaxial cable connector; positioning a first conductive member on an inner surface of the post, wherein the first conductive member contacts both the foil layer and the post establishing and maintaining electrical continuity; fixedly attaching the coaxial cable to the connector; and connecting the connector onto an interface port so that the first conductive member facilitates grounding through the connector.
The foregoing and other features of the invention will be apparent from the following more particular description of various embodiments of the invention.
Some of the embodiments of this invention will be described in detail, with reference to the following figures, wherein like designations denote like members, wherein:
Although certain embodiments of the present invention will be 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 an embodiment. The features and advantages of the present invention are illustrated in detail in the accompanying drawings, wherein like reference numerals refer to like elements throughout the drawings.
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.
Referring to the drawings,
The conductive foil layer 15 may comprise a layer of foil wrapped or otherwise positioned around the dielectric 16, thus the conductive foil layer 15 may surround and/or encompass the dielectric 16. For instance, the conductive foil layer 15 may be positioned between the dielectric 16 and the shield 14. In one embodiment, the conductive foil layer 15 may be bonded to the dielectric 16. In another embodiment, the conductive foil layer 15 may be generally wrapped around the dielectric 16. The conductive foil layer 15 may provide a continuous uniform outer conductor for maintaining the coaxial condition of the coaxial cable 10 along its axial length. The coaxial cable 10 having, inter alia, a conductive foil layer 15 may be manufactured in thousands of feet of lengths. Furthermore, the conductive foil layer 15 may be manufactured to a nominal outside diameter with a plus minus tolerance on the diameter, and may be a wider range than what may normally be achievable with machined, molded, or cast components. The outside diameter of the conductive foil layer 15 may vary in dimension down the length of the cable 10, thus its size may be unpredictable at any point along the cable 10. Due to this unpredictability, the contact between the post 40 and the conductive foil layer 15 may not be sufficient or adequate for conductivity or continuity. A conductive member 75 may be placed inside or along an inner surface of the post 40 to allow continuity and/or continuous physical and electrical contact or communication with the conductive foil layer 15. Continuous conductive and electrical communication or contact between the post 40 and the conductive foil layer 15 may be established by the physical and electrical contact between the conductive foil layer 15 and the conductive member 75, wherein the conductive member 75 is in physical and electrical communication or contact with the post 40.
Referring further to
With continued reference to
Furthermore, the conductive member 75 need not be a ring-shaped member and extend 360° around the inner surface of the post 40. For example, the conductive member 75 may be placed along an inner surface of the post 40, at one specific location, wherein it does not extend 360° around the inner surface of the post 40. As long as the conductive member 75 is positioned between and physically contacts the conductive foil layer 15 and the post 40, physical and electrical communication may be established and maintained. In one embodiment, the conductive member 75 may be positioned along the inner surface of the post 40, wherein the shape of the conductive member 75 may conform to the curvature of the post 40 forming an arc-shaped member, or semi-circle. Alternatively, the conductive member 75 may be a rectangular or polygonal structure positioned along an inner surface of the post 40. The conductive member 75 may have a circular, rectangular, or square cross section. Thus, the contact between the conductive member 75 and the post 40 at one specific location may establish and maintain electrical and physical continuity. In another embodiment, there may be a conductive member 75 placed at more than one location along the inner surface of the post 40. For instance, a conductive member 75 may be located along the inner surface of the post 40 proximate the second end 42, and a second conductive member 75 may be placed along the inner surface of the post proximate the first end 41. Additionally, a single conductive member 75 may be placed along the inner surface of the post 40 proximate the first end 41, or a single conductive member 75 may be placed along the inner surface of the post 40 proximate the second end 42.
The conductive member 75 may be in physical and electrical communication or contact with the conductive foil layer 15 which may result in electrical continuity about an inner dielectric 16 for a connector 100, such as an F connector. For example, when the dielectric 16 and center conductor 18 are proximate the second end 44 of the post 40, the conductive foil layer 15 contacts the conductive member 75. The physical contact may be sufficient and adequate because the coaxial cable 10 may be radially compressed proximate the second end 44 of the post, thereby strengthening or tightening the contact between the conductive foil layer 15 and the conductive member 75. The physical contact may be strengthened because a radial compressive force applied to the coaxial cable 10 may cause the post 40 to apply or exert a force onto the dielectric 16. The conductive member 75 and conductive foil layer 15 positioned between the post 40 and the dielectric 16 may be compressed together, thereby strengthening the physical contact between them, which may ensure an adequate and continuous physical and electrical contact or communication between them. The physical and electrical communication or contact between the conductive foil layer 15 and the conductive member 75 may transfer the electricity or current from the conductive foil layer 15 to the post 40, which may ground the coaxial cable 10 when the post 40 is in electrical or conductive communication with the coaxial cable interface port 20. Furthermore, the outer electromagnetic shield extending through the conductive foil layer 15 may be prevent electromagnetic noise from reaching the center conductor 18 because the conductive foil layer 15 continuously electrically contacts the conductive member 75, and the conductive member 75 is in physical and electrical contact or communication with the post 40. Thus, the post 40 may be in continuous electrical and conductive communication with the conductive foil layer 15, providing electrical continuity about an inner dielectric 16 for a connector 100.
With additional reference to the drawings,
With further reference to the drawings,
With continued reference to the drawings,
Referring further to the drawings,
Referring still further to the drawings,
With continued reference to the drawings,
With still further continued reference to the drawings,
With reference to
A method for grounding a coaxial cable 10 through a connector 100 is now described with reference to
Referring back to
Grounding may be further attained and maintained by fixedly attaching the coaxial cable 10 to the connector 100. Attachment may be accomplished by insetting the coaxial cable 10 into the connector 100 such that the first end 42 of post 40 is inserted under the conductive grounding sheath or shield 14 and around the conductive foil layer 15 encompassing the dielectric 16. Where the post 40 is comprised of conductive material, a grounding connection may be achieved between the received conductive grounding shield 14 of coaxial cable 10 and the inserted post 40. The ground may extend through the post 40 from the first end 42 where initial physical and electrical contact is made with the conductive grounding shield 14 to the second end 44 of the post 40. Once received, the coaxial cable 10 may be securely fixed into position by radially compressing the outer surface 57 of connector body 50 against the coaxial cable 10 thereby affixing the cable into position and sealing the connection. Furthermore, radial compression of a resilient member placed within the connector 100 may attach and/or the coaxial cable 10 to connector 100. In addition, the radial compression of the connector body 50 may be effectuated by physical deformation caused by a fastener member 60 that may compress and lock the connector body 50 into place. Moreover, where the connector body 50 is formed of materials having and elastic limit, compression may be accomplished by crimping tools, or other like means that may be implemented to permanently deform the connector body 50 into a securely affixed position around the coaxial cable 10.
As an additional step, grounding of the coaxial cable 10 through the connector 100 may be accomplished by advancing the connector 100 onto an interface port 20 until a surface of the interface port mates with the conductive member 75. Because the conductive member 75 is located such that it makes physical and electrical contact with post 40, grounding may be extended from the post 40 through the conductive member 75 and then through the mated interface port 20. Accordingly, the interface port 20 should make physical and electrical contact with the conductive member 75. Advancement of the connector 100 onto the interface port 20 may involve the threading on of attached threaded nut 30 of connector 100 until a surface of the interface port 20 abuts the conductive member 75 and axial progression of the advancing connector 100 is hindered by the abutment. In one embodiment, the conductive member 75 may be flush with the mating edge 49 of the post 40, such that the interface port 20 physically contacts the mating edge 49, thereby establishing physical and electrical contact with the conductive member 75 located therebetween. In another embodiment, the conductive member 75 may extend a distance from or outward from the mating edge 49, such that a surface of the interface port 20 need not physically contact the mating edge 49, yet may still establish physical and electrical contact with the conductive member 75 (shown in
However, it should be recognized that embodiments of the connector 100 may be advanced onto an interface port 20 without threading and involvement of a threaded nut 30. Once advanced until progression is stopped by the conductive contact of the conductive member 75 with interface port 20, the connector 100 may be further shielded from ingress of unwanted electromagnetic interference. Moreover, grounding may be accomplished by physical advancement of various embodiments of the connector 100 wherein a conductive member 75 facilitates electrical connection of the connector 100 and attached coaxial cable 10 to an interface port 20.
With continued reference to
Grounding may be further attained by fixedly attaching the coaxial cable 10 to the connector 100. Attachment may be accomplished by insetting the coaxial cable 10 into the connector 100 such that the first end 42 of post 40 is inserted under the conductive grounding sheath or shield 14 and around the conductive foil layer 15 and dielectric 16. Where the post 40 is comprised of conductive material, a grounding connection may be achieved between the received conductive grounding shields 14 of coaxial cable 10 and the inserted post 40. The ground may extend through the post 40 from the first end 42 where initial physical and electrical contact is made with the conductive grounding shield 14 to the mating edge 49 located at the second end 44 of the post 40. Once, received, the coaxial cable 10 may be securely fixed into position by radially compressing the outer surface 57 of connector body 50 against the coaxial cable 10 thereby affixing the cable into position and sealing the connection. The radial compression of the connector body 50 may be effectuated by physical deformation caused by a fastener member 60 that may compress and lock the connector body 50 into place. Moreover, where the connector body 50 is formed of materials having and elastic limit, compression may be accomplished by crimping tools, or other like means that may be implemented to permanently deform the connector body 50 into a securely affixed position around the coaxial cable 10.
As an additional step, grounding of the coaxial cable 10 through the connector 100 may be accomplished by advancing the connector 100 onto an interface port 20 until a surface of the interface port mates with the mating edge conductive member 70. Because the mating edge conductive member 70 is located such that it makes physical and electrical contact with post 40, grounding may be extended from the post 40 through the mating edge conductive member 70 and then through the mated interface port 20. Accordingly, the interface port 20 should make physical and electrical contact with the mating edge conductive member 70. The mating edge conductive member 70 may function as a conductive seal when physically pressed against the interface port 20. Advancement of the connector 100 onto the interface port 20 may involve the threading on of attached threaded nut 30 of connector 100 until a surface of the interface port 20 abuts the mating edge conductive member 70 and axial progression of the advancing connector 100 is hindered by the abutment. However, it should be recognized that embodiments of the connector 100 may be advanced onto an interface port 20 without threading and involvement of a threaded nut 30. Once advanced until progression is stopped by the conductive sealing contact of mating edge conductive member 70 with interface port 20, the connector 100 may be shielded from ingress of unwanted electromagnetic interference. Moreover, grounding may be accomplished by physical advancement of various embodiments of the connector 100 wherein a mating edge conductive member 70 facilitates electrical connection of the connector 100 and attached coaxial cable 10 to an interface port 20.
A method for electrically coupling a connector 100 and a coaxial cable 10 is now described with reference to
With continued reference to
Electrical coupling may be further accomplished by fixedly attaching the coaxial cable 10 to the connector 100. The coaxial cable 10 may be inserted into the connector body 50 such that the conductive grounding shield 14 makes physical and electrical contact with and is received by the connector body 50 and/or the post 40. In one embodiment of the connector 100, the drawn back conductive grounding shield 14 may be pushed against the inner surface of the connector body 50 when inserted. Once received, or operably inserted into the connector 100, the coaxial cable 10 may be securely set into position by compacting and deforming the outer surface 57 of connector body 50 against the coaxial cable 10 thereby affixing the cable into position and sealing the connection. Compaction and deformation of the connector body 50 may be effectuated by physical compression caused by a fastener member 60, wherein the fastener member 60 constricts and locks the connector body 50 into place. Moreover, where the connector body 50 is formed of materials having and elastic limit, compaction and deformation may be accomplished by crimping tools, or other like means that may be implemented to permanently contort the outer surface 57 of connector body 50 into a securely affixed position around the coaxial cable 10.
A further method step of electrically coupling the coaxial cable 10 and the connector 100 may be accomplished by completing an electromagnetic shield by threading the threaded nut 30 onto a conductive interface port 20. Where the connector body 50 and threaded nut 30 are formed of conductive materials, an electrical circuit may be formed when the conductive interface port 20 contacts the threaded nut 30 because the connector body conductive member 80 extends the electrical circuit and facilitates electrical contact between the threaded nut 30 and connector body 50. Moreover, the realized electrical circuit works in conjunction with physical screening performed by the connector body 50 and threaded nut 30 as positioned in barrier-like fashion around a coaxial cable 10 when fixedly attached to a connector 100 to complete an electromagnetic shield where the connector body conductive member 80 also operates to physically screen electromagnetic noise. Thus, when threaded onto an interface port 20, the completed electrical couple renders electromagnetic protection, or EMI shielding, against unwanted ingress of environmental noise into the connector 100 and coaxial cable 10.
While this invention has been described in conjunction with the specific embodiments outlined above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the embodiments of the invention as set forth above are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the invention as defined in the following claims.
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