The present invention relates generally to electrical cable connectors and, more particularly, to ganged connector assemblies.
Coaxial cables are commonly utilized in RF communications systems. Coaxial cable connectors may be applied to terminate coaxial cables, for example, in communication systems requiring a high level of precision and reliability.
Connector interfaces provide a connect/disconnect functionality between a cable terminated with a connector bearing the desired connector interface and a corresponding connector with a mating connector interface mounted on an apparatus or a further cable. Some coaxial connector interfaces utilize a retainer (often provided as a threaded coupling nut) that draws the connector interface pair into secure electro-mechanical engagement as the coupling nut, rotatably retained upon one connector, is threaded upon the other connector.
Alternatively, connection interfaces may be also provided with a blind mate characteristic to enable push-on interconnection, wherein physical access to the connector bodies is restricted and/or the interconnected portions are linked in a manner where precise alignment is difficult or not cost-effective (such as the connection between an antenna and a transceiver that are coupled together via a rail system or the like). To accommodate misalignment, a blind mate connector may be provided with lateral and/or longitudinal spring action, or “float,” to accommodate a limited degree of insertion misalignment. Blind mated connectors may be particularly suitable for use in “ganged” connector arrangements, in which multiple connectors (for example, four connectors) are attached to each other and are mated to mating connectors simultaneously.
Examples of ganged coaxial connectors are discussed in U.S. Patent Publication No. 2019/0312394 to Paynter, the disclosure of which is hereby incorporated herein by reference in full. This publication identifies solutions for two different issues that can arise with ganged blind mate connectors: “float” and secure interconnection. Ganged connectors are shown therein with a common shell. Each individual “male” connector is sized to be able to “float” axially, angularly and radially relative to the shell. Also, each individual “male” connector engages a respective helical spring that also engages the shell. Although each connector can move relative to the shell to adjust during mating, compression in the spring can provide sufficient force that, once the male connector is mated, the male connector is maintained in position relative to the shell. The ganged male connectors are secured to the mating “female” connectors via a pivoting latch that captures a pin on gang of male connectors.
It may be desirable to develop additional concepts and solutions for ganged coaxial connectors.
As a first aspect, embodiments of the invention are directed to a ganged connector assembly. The assembly comprises: a plurality of coaxial connectors, each of the coaxial connectors connected with a respective coaxial cable extending rearwardly therefrom, each of the coaxial connectors including an inner contact and an outer body that is electrically separated from the inner contact; a shell having a plurality of cavities; and a plurality of rear bodies, each of the rear bodies encircling a respective outer body, each of the rear bodies mounted in a respective cavity of the shell. Each of the rear bodies includes a first locking feature. A second locking feature is located in each of the cavities and is fixed relative to the shell. The first and second locking features are configured such that rotation of a first of the plurality of rear bodies relative to the shell moves the first rear body between locked and unlocked positions, wherein in the locked position a respective first connector and respective first cable are secured with the shell within a respective cavity, and in the unlocked position the first connector and first cable can be removed from the shell without removing the remaining connectors and cables.
As a second aspect, embodiments of the invention are directed to a ganged connector assembly comprising: a plurality of coaxial connectors, each of the coaxial connectors connected with a respective coaxial cable extending rearwardly therefrom, each of the coaxial connectors including an inner contact and an outer body that is electrically separated from the inner contact; a shell having a plurality of cavities; a plurality of rear bodies, each of the rear bodies encircling a respective outer body, each of the rear bodies mounted in a respective cavity of the shell, wherein each of the rear bodies includes a radially-outward tab; and a plurality of retainer rings, each of the retainer rings located in a respective cavity and fixed relative to the shell, each of the retainer rings including a discontinuous lip having a first gap and a recess. The tabs, lips, first gaps and recesses are configured such that rotation of a first of the plurality of rear bodies relative to a first of the retainer rings moves the first rear body between locked and unlocked positions, wherein in the locked position a respective first tab is received in a respective first recess to secure a respective first connector and respective first cable with the shell within a respective cavity, and in the unlocked position the tab may pass through the first gap to enable the first connector and first cable to be removed from the shell without removing the remaining connectors and cables.
As a third aspect, embodiments of the invention are directed to a ganged connector assembly comprising: a plurality of coaxial connectors, each of the coaxial connectors connected with a respective coaxial cable extending rearwardly therefrom, each of the coaxial connectors including an inner contact and an outer body that is electrically separated from the inner contact; a shell having a plurality of cavities; a plurality of rear bodies, each of the rear bodies encircling a respective outer body, each of the rear bodies mounted in a respective cavity of the shell, wherein each of the rear bodies includes a radially-outward tab; a plurality of retainer rings, each of the retainer rings located in a respective cavity and fixed relative to the shell, each of the retainer rings including a discontinuous lip having a first gap and a recess; and a plurality of biasing members, each associated with a coaxial connector. The tabs, lips, first gaps and recesses are configured such that rotation of a first of the plurality of rear bodies relative to a first of the retainer rings moves the first rear body between locked and unlocked positions, wherein in the locked position a respective first tab is received in a respective first recess to secure a respective first connector and respective first cable with the shell within a respective cavity, and in the unlocked position the tab may pass through the first gap to enable the first connector and first cable to be removed from the shell without removing the remaining connectors and cables. A first of the plurality of biasing members is positioned between the first rear body and the outer body of the first coaxial connector, the biasing member biasing the outer body of the first coaxial connector forwardly and the first rear body rearwardly, such that in the locked position the first biasing member urges the first tab to remain in the first recess.
The present invention is described with reference to the accompanying drawings, in which certain embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments that are pictured and described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It will also be appreciated that the embodiments disclosed herein can be combined in any way and/or combination to provide many additional embodiments.
Unless otherwise defined, all technical and scientific terms that are used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the below description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this disclosure, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when an element (e.g., a device, circuit, etc.) is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present.
As noted above, an issue that can arise with ganged connector assemblies is the alignment of individual mating connectors. Proper mating of the individual “male” connectors with the individual “female” connectors is needed to ensure that sound electrical contact is made. Quality of electrical contact can become more vital at high performance levels, as poor or inconsistent contact can produce unpredictable passive intermodulation (PIM) performance. PIM is an undesirable effect that can manifest itself in poor connections. As such, it is important in designing mating connectors that the contact/engagement between them be consistent and predictable.
A ganged connector assembly can introduce inconsistency in connector mating simply due to variables such as component tolerances. Thus, the ability of the mating connectors in a ganged assembly to float relative to the housing in which they are mounted, and to do so in a manner that maintains reliable and consistent contact between mating connectors, can be very desirable. Float can involve axial (i.e., in the direction of mating), radial (i.e., movement normal to the axial direction), and angular (“tilting” movement relative to the axial direction) components, so any float mechanisms or solution should permit movement in these three modes.
It has also been noted that, with many ganged connector assemblies, during manufacturing one cable may be faulty, or during use one cable may become unusable or inoperable. When this happens, in most instances the entire assembly must be replaced. It may be desirable to provide ganged coaxial connector assemblies in which one cable may be replaced within the assembly, rather than having to scrap the entire assembly.
Referring now to the drawings, an example of an assembly with provisions for axial, radial and angular float is shown in
Referring now to
As shown in
Additional embodiments are disclosed and described in U.S Patent Publication No. 2019/0312394 to Paynter, supra.
Another assembly, designated broadly at 100, is illustrated in
As seen in
As seen in
In addition to an inner contact 152, the connector 150 also includes an outer body 154 that is somewhat similar to that of the connector 1750 described above. The outer body 154 has a “tail” 180 that fits within the front end 162 of the rear body 156 (and is free to move axially and slightly radially relative thereto), an interface ring 181 at the opposite end, and a shoulder 182 with a projection 183 that defines a groove 184 that receives the outer connector body 110 of the mating connector 105. The shoulder 182 has six “hex” faces about its perimeter that fits within six hex faces in the cavity of the shell 160 to prevent rotation of the connector 150 relative to the shell 160. A spring basket 186 with fingers 187 is positioned radially inwardly of the interface ring 181. A helical spring 188 is positioned between the shoulder 182 and the forward end of the rear body 156.
Installation of the connector 150 begins with the insertion of the retainer ring 170 into a cavity 159 of the shell 160. The ridges of the retainer ring 170 help to maintain it in position. Next, the connector 150, which is attached to the cable 142, is inserted through the retainer ring 170 (
Once the locking tabs 164 “clear” the lip 173 of the retaining ring 170 (
If the cable 142 or connector 150 becomes inoperable or otherwise needs replacing, the rear body 156 can be pressed forward until the middle portion 165 of each locking tab 164 “clears” the lip 173. The rear body 156 can then be rotated until the locking tabs 164 reach the gaps 175 (i.e., to the unlocked position). The rear body 164, the connector 150 and the cable 142 can then be slipped rearwardly through the retaining ring 170 and replaced with another cable, connector and rear body.
Those of skill in this art will appreciate that the ganged connector assembly may take other forms. As an example,
Because the rear body 256 is not accessible for grasping to impart rotation, instead the cable 242 itself is employed to impart rotation. Thus, the outer body 254 includes a hex section 257 on its outer surface and the rear body 256 includes a corresponding hex section 258 on its inner surface (see
Referring now to
Those of skill in this art will recognize that the assembly may take other forms. For example, the coaxial connectors may be configured differently and/or have different interfaces (e.g., DIN, 4.3/10, 2.2/5, NEX10, etc.). The connectors maybe different in number and/or arrangement. The shells are shown herein as being generally square in footprint, but may take another form (e.g., rectangular, circular, oval, etc.). Other variations are also contemplated.
It is also contemplated that, rather than utilizing the retainer rings 170, 270, 370 mounted in their respective shells 160, 260, 360, in some embodiments the features of the retainer rings 170, 270, 370 (i.e., the grooves, lips, and gaps of the retainer rings 170, 270 and the threads of the retainer ring 370) may be formed directly into the shells 160, 260, 360.
Further, it will be understood that locking mechanisms/features other than the tabs of the rear body and the gaps of the retainer ring may be employed. For example, rather than employing fully open gaps such as the gaps 176, 276 to lock the tabs in place, the retainer rings 170, 270 may include another type of recess (such as a recess with a closed rear end) that receives the tabs and lock them in place. Such a configuration may employ tabs that lack the wings 166 illustrated therein. Alternatively, the retainer rings 170, 270 may include only the gaps 175, 275 that enable insertion and removal of the tabs 164, 264, and rely on the pressure and resultant friction created by the spring 188 against the lips 173, 273 as locking features that lock the rear body 156, 256 in a locked position. Other variations may also be employed.
Moreover, although the hex faces are employed to prevent either rotation between the connector and the shell (in the case of the assemblies 140, 340) or between the connector and the rear body (in the case of the assembly 240), other non-rotation features may be used, such as a post and slot combination.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.
The present application claims priority from and the benefit of U.S. Provisional Patent Application No. 63/120,483, filed Dec. 2, 2020, the disclosure of which is hereby incorporated herein by reference in its entirety.
Number | Date | Country | |
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63120483 | Dec 2020 | US |