The present disclosure generally relates to coaxial cable assemblies, and particularly connector assemblies, having pinching and gripping elements, that connect with coaxial cables, having corrugated outer conductors.
A coaxial cable is characterized by having an inner electrical conductor, an outer electrical conductor, and a dielectric between the inner and outer electrical conductors. The inner electrical conductor may be hollow or solid. At the end of coaxial cable, a connector or connector assembly is attached to allow for mechanical and electrical coupling of the coaxial cable.
Connectors and connector assemblies for attachment to coaxial cables have been used throughout the coaxial cable industry for a number of years. One type of coaxial cable has an annularly corrugated outer conductor and a plain cylindrical inner conductor. Generally, connectors and connector assemblies that attached to these types of coaxial cables are different from those where the outer electrical conductors are smooth or uncorrugated.
For example, one connector assembly type includes a single annular clamping portion that meshes with the last valley or outermost valley of the corrugated outer conductor, providing a single circumferential point of contact. Without additional axial reinforcement from the coaxial cable connector, physical gyrations of the cable found in field applications due to weather and vibration can cause undue stress and, ultimately, material fatigue of the corrugated cable outer conductor.
The aforementioned example clearly shows there is a continuing need for improved high performance coaxial cable connectors and connector assemblies. There is a particular need for connectors and connector assemblies that can be installed and uninstalled easily and quickly, particularly under field conditions. Also, since these connectors and connector assemblies are generally installed in the field, they should be configured for pre-assembly, so that the possibility of dropping and losing small parts, misplacing o-rings, damaging or improperly lubricating o-ring, or other assembly errors in the field are minimized. Additionally, it should be possible for the coaxial cable connector to be installed and removed without the use of any special tools.
In view of the aforementioned needs, as well as other issues with prior connector and connector assembly designs, alternatives are desired.
Disclosed herein are various embodiments of coaxial cable connector assemblies for attachment to a corrugated coaxial cable, having a center conductor, a dielectric surrounding the center conductor, and a corrugated outer conductor surrounding the dielectric. Related methods are also disclosed herein.
According to a first aspect, a coaxial connector assembly, for attachment to a corrugated coaxial cable, includes a rear outer body, having an engagement element, to be received over a portion of the corrugated coaxial cable and a front subassembly. The front subassembly is configured for partial insertion into the rear outer body. The front subassembly includes, among other things, a front body shell, having a deformable end portion and a rearward annular extension spaced apart from the deformable end portion such that a pinching space is formed between the deformable end portion and the rearward annular extension. Upon coupling of the rear outer body with the front body shell, a portion of the corrugated outer conductor is configured for positioning within the pinching space. In addition, during the coupling, the deformable end portion is inwardly urged toward the rearward annular extension by the engagement element such that the portion of the corrugated outer conductor is pinched while positioned within the pinching space.
According to a second aspect, a coaxial connector assembly includes a front subassembly and an alternative version of a rear outer body to be received over a portion of the corrugated coaxial cable. The rear outer body includes an engagement element that slidingly engages with the corrugated outer conductor upon coupling. The front subassembly is configured for partial insertion into the rear outer body. The front subassembly includes a front body shell, having an end portion and a ferrule spaced apart from the end portion such that a gripping space is formed between the end portion and the ferrule. Upon coupling of the rear outer body (402) with the front body shell, a portion of the corrugated outer conductor is positioned within the gripping space and the ferrule is inwardly urged toward the end portion by the engagement element such that the portion of the corrugated outer conductor is gripped while positioned within the gripping space.
According to a third aspect, a method of making a connector assembly to be attached to a corrugated coaxial cable includes the steps of: forming a rear outer body to be received over a prepared end of the corrugated coaxial cable, with the rear outer body including an engagement element defined therein; forming a front subassembly to engage the rear outer body, with the front subassembly including a front body shell having a deformable end portion and a rearward annular extension spaced apart from the deformable end portion such that a pinching space is formed between the deformable end portion and the rearward annular extension, coupling the rear outer body with the front body shell, and positioning a portion of the corrugated outer conductor within the pinching space.
Additional features and advantages will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments as described herein, including the detailed description which follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description are merely exemplary, and are intended to provide an overview or framework to understanding the nature and character of the claims. The accompanying drawings are included to provide a further understanding, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments, and together with the description serve to explain principles and operation of the various embodiments.
The figures are not necessarily to scale. Like numbers used in the figures may be used to refer to like components. However, it will be understood that the use of a number to refer to a component in a given figure is not intended to limit the component in another figure labeled with the same number.
Various exemplary embodiments of the disclosure will now be described with particular reference to the drawings. Exemplary embodiments of the present disclosure may take on various modifications and alterations without departing from the spirit and scope of the disclosure. Accordingly, it is to be understood that the embodiments of the present disclosure are not to be limited to the following described exemplary embodiments, but are to be controlled by the features and limitations set forth in the claims and any equivalents thereof.
Unless otherwise indicated, all numbers expressing feature sizes, amounts, and physical properties used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by those skilled in the art utilizing the teachings disclosed herein.
As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” encompass embodiments having plural referents, unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.
Spatially related terms, including but not limited to, “lower,” “upper,” “beneath,” “below,” “above,” and “on top,” if used herein, are utilized for ease of description to describe spatial relationships of an element(s) to another. Such spatially related terms encompass different orientations of the device in use or operation in addition to the particular orientations depicted in the figures and described herein. For example, if an object depicted in the figures is turned over or flipped over, portions previously described as below or beneath other elements would then be above those other elements.
Cartesian coordinates are used in some of the Figures for reference and are not intended to be limiting as to direction or orientation.
For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” “top,” “bottom,” “side,” and derivatives thereof, shall relate to the disclosure as oriented with respect to the Cartesian coordinates in the corresponding Figure, unless stated otherwise. However, it is to be understood that the disclosure may assume various alternative orientations, except where expressly specified to the contrary.
Disclosed herein are embodiments of connector assemblies 200, 400 configured for positioning onto a prepared cable-seal assembly.
The corrugated coaxial cable 100 includes a center conductor 105, a dielectric 120, a corrugated outer conductor 125, and a jacket 130. The center conductor 105 is annular and thus includes an inside diameter 110 and an outside diameter 115. The dielectric 120 surrounds the outside diameter 115 of the center conductor 105, the corrugated outer conductor 125 surrounds the dielectric 120, and the jacket 130 surrounds the corrugated outer conductor 125. In both
As shown particularly in
Each embodiment of the connector assemblies disclosed herein is preferably preassembled before shipment and includes a rear outer body and a front subassembly. Each rear outer body and front subassembly are thus attached to one another so that they can be shipped from the factory to the field and then installed onto a prepared end of a corrugated coaxial cable.
Referring to
The rear outer body 202 additionally includes an engagement element 220 configured for positioning adjacent to the seal 150 and engaging the corrugated outer conductor 125 upon coupling of the rear outer body 202 with a portion of the corrugated coaxial cable 100 in the prepared state. Specifically, the engagement element 220 inwardly extends toward the prepared end 170 of the corrugated coaxial cable 100 for direct engagement with the corrugated outer conductor 125. The engagement element 220 includes a seal engagement face 230 configured for positioning adjacent the seal 150, an internal surface 232 configured for engagement with the corrugated outer conductor 125, and an angled face 234 positioned angularly at a face angle α, with respect to the seal engagement face 230. The face angle α can range from about 5 degrees to about 30 degrees. In some embodiments, the angled face 234 is also configured for engagement with the corrugated outer conductor 125. The angled face 234 also facilitates entry the prepared end 170 of the corrugated coaxial cable 100 into the rear outer body 202 and acts as a stop for the seal 150. The rear outer body 202 additionally includes include forward inner diameters 222, 224 adjacent the front end 208 and an rearward diameter 225 adjacent the back end 210. The rearward diameter 225 of the rear outer body 202 is of sufficient size to slide over the seal 150. The forward inner diameters 222, 224 are configured for engagement with the seal 150, the corrugated coaxial cable 100, and the front subassembly 204, as will be described with respect to
Referring to
In addition to the aforementioned elements, the front body shell 260 includes an intermediary shell portion 274, a forward annular extension 280a, and a rearward annular extension. The intermediary shell portion 274 is configured within the front body shell 260 to form a shoulder 275 upon which the insulator 300 is positioned against. The forward annular extension 280a has an extension end 281a that extends slightly past the first shell end 262 and a first annular channel 276a positioned between the external gripping portion 266a and the forward annular extension 280a. The forward annular extension 280a preferably includes first and second extension diameters 282a, 282b with the first extension diameter 282a being slightly larger than the second extension diameter 282b. Extending from a bottom portion 271 of the annular shoulder 270 is the rearward annular extension 280b. The rearward annular extension 280b extends within the front body shell 260 such that the second shell end 264 is spaced apart from the extension end 281b of the rearward annular extension 280b. And disposed between the rearward annular extension 280b and the deformable end portion 269 is a second annular channel 276b. The front body shell 260 is preferably made from one or more metallic materials, e.g. brass and brass composite materials, and plated with a conductive, corrosion resistant material such as a nickel-tin alloy.
Also included within the front subassembly is the insulator 300. The insulator includes a bore 302 aligned with respect to longitudinal axis A and an outer surface 304. In preferred configurations, the insulator 300 further includes an insulator channel 306. The insulator 300 is manufactured from an electrically insulative material Examples of such materials include, but are not limited to, foam-based materials and acetal.
As shown particularly in
The installation of the connector assembly 200 will now be described with respect to
Referring to
The rear outer body 402 additionally includes an inwardly extending engagement element 420 configured for positioning adjacent to the seal 150 and sliding engagement with the corrugated outer conductor 125 upon coupling with the corrugated outer conductor 125. Preferably, the seal 150 is configured for positioning adjacent to or within an outermost valley 126 of the corrugated outer conductor 125 such that the engagement element 420 abuts against the seal, as particularly shown in
Referring to
The seal 550 is configured to prevent exposure to water and other elements, particularly upon assembly with the rear outer body 402, as shown in
The insulator 600 preferably has the same configuration as the insulator 300 of the first connector assembly embodiment. Accordingly, the insulator includes a bore 602 aligned with respect to longitudinal axis A′ and an outer surface 484. In preferred configurations, the insulator further includes an insulator channel 606. In the connector assembly 400, the insulator 600 is positioned to abut against the interior stop 476 of the front body shell 460. The insulator 600 is also preferably made from an electrically insulative material such as a foam-based material or acetal.
As shown particularly in
The ferrule 700 is configured to engage with the corrugated outer conductor 125 of the corrugated coaxial cable 100 after the jacket 130 has been stripped back to expose a portion of the corrugated outer conductor 125. The ferrule is preferably made of at least one metallic material, such as brass, and plated with at least one conductive material, such as nickel-tin.
Referring back to
Upon coupling of the rear outer body 402 with the ferrule 700, as shown in
For the purposes of describing and defining the subject matter of the disclosure it is noted that the terms “substantially” and “generally” may be utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation
It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the disclosure. Since modifications, combinations, sub-combinations and variations of the disclosed embodiments incorporating the spirit and substance of the disclosure may occur to persons skilled in the art, the embodiments disclosed herein should be construed to include everything within the scope of the appended claims and their equivalents.
This application claims priority to U.S. Application Ser. No. 62/942,742, filed Dec. 2, 2019, and U.S. Application Ser. No. 63/059,701, filed Jul. 31, 2020. The content of each priority application is incorporated herein by reference in its entirety.
Number | Date | Country | |
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63059701 | Jul 2020 | US | |
62942742 | Dec 2019 | US |