The present invention relates to a new and useful mounting device for cable connectors. More particularly, the present invention relates to a multi-port mounting device for cable connectors with two-stage retention clips.
The broadband services market has experienced tremendous worldwide growth in recent years and continues to grow. In telecommunications, broadband refers to a signaling method that includes or handles a relatively wide range of signal frequencies. Those signals can be carried over a communication path via a static connection made with some type of cable, e.g., optical fiber or electrical conductor, or via some form of energy without the use of cables, e.g., radio frequency (RF), infrared light, laser light, fiberless visible light, and acoustic energy. Cable television (CATV), cable internet, digital subscriber lines (DSL), isolated subscriber digital networks (ISDN), and local area networks (LAN) are among the cabled, or “wired”, broadband services now provided.
CATV transmits digital and analog television signals to televisions via optical fiber cables, coaxial cables, or a combination thereof in a hybrid fiber-coaxial (HFC) network. Cable internet utilizes the CATV infrastructure to transmit various forms of digital data over a wide area network (WAN) of interconnected computers via optical fibers and coaxial cables. And, just as cable internet is layered on top of the existing CATV network infrastructure, DSL and ISDN utilize the existing telephone network infrastructure to transmit various forms of digital data over a WAN via copper telephone wires. Unlike WANs, LANs are networks of interconnected computers covering a small physical area, such as an office building. Various forms of digital data can be transmitted over LANs using optical fibers, coaxial cables, or copper twisted pair cables.
At the heart of the infrastructure that makes up each of those forms of broadband service, service providers often utilize a central control device called a headend. Headends serve as trunks, or nodes, in spanning tree networks that receive, process, and distribute signals into the service provider's network. In larger networks, e.g., WANs, headends may connect to distribution systems or other headends, which may further connect to other distributions systems or headends. Accordingly, each headend may include hundreds of cable connectors for making the numerous network connections required.
The increased number of network connections at the headend leads to significant difficulties when connecting and disconnecting cables at the headend. When cables are individually connected to the headend, each cable connector typically includes some type of fastening means, such as a threaded collar, to maintain a connection with the headend. Not only must each connection be disconnected and reconnected if, for example, the module to which they are connected needs to be replaced, the density with which those connections are arranged on the headend makes it difficult to access the fastening means on each connector, such as with a wrench.
In response to the difficulties encountered when individually connecting and disconnecting cables at the headend, high-density multi-port cable connectors, or gang connectors, have been developed to allow a large number of connections to be simultaneously made and broken using a single connector housing. The cable connections are maintained with the headend using only a few fastening means, such as two jack screws, on the gang connector housing in lieu of using fastening means on each of the individual cables. The individual cables, however, maintain their connection with the gang connector housing with fastening means, such as retention clips, that are not accessible while the gang connector housing is connected to the headend. Accordingly, none of those gang connectors allows individual cables to be connected or disconnected without disconnecting the entire gang connector housing when a single cable requires maintenance. Instead, all of the cables must be disconnected with the gang connector to access a single cable, which results in the disruption of service to all of the other cables in the gang connector that must also be disconnected.
Accordingly, there is a need for a device of and method for a gang connector that allows a large number of cables to be connected or disconnected to a headend at the same time while simultaneously allowing the cables to be connected and disconnected individually without disconnecting the entire gang connector.
Accordingly, to solve at least the above problems and/or disadvantages and to provide at least the advantages described below, a non-limiting object of the present invention is to provide a device of and method for making a multi-port cable connector comprising a connector housing having a plurality of orifices and a clip receiving portion extending into each orifice, each orifice being adapted to receive a corresponding cable connector therein and each clip receiving portion including, at least one grooved engagement surface disposed in a sidewall of the clip receiving portion and defining a first stage, and at least one second grooved engagement surface disposed below the at least one first grooved engagement surface in a sidewall of the clip receiving portion and defining a second stage; and comprising a plurality of retention clips adapted to slide between the first stage and the second stage in a corresponding clip receiving portion, each retention clip including a pair of engagement arms having a notched engagement surface for alternately engaging the pair of first engagement surfaces and the pair of second engagement surfaces.
These and other objects of the invention, as well as many of the intended advantages thereof, will become more readily apparent when reference is made to the following description, taken in conjunction with the accompanying drawings.
Reference will now be made in detail to non-limiting embodiments of the present invention by way of reference to the accompanying drawings, wherein like reference numerals refer to like parts, components, and structures.
Turning to the figures,
The connector housing 100 may include a circumferential rim 106 at a leading end of the connector housing 100 that defines a cavity 108 therein where individual cable connectors mate with corresponding connectors on the electronic component, thereby protecting the individual connectors from fouling or shorting. The connector housing 102 also includes a pair of cylindrical first orifices 110 extending therethrough, each of which is adapted to receive a jacking screw 112 therein for attaching the connector housing 102 to the electronic component.
The connector housing 102 also may include a plurality of cylindrical second orifices 200, a plurality of clip receiving portions 202, a plurality of tongue recesses 204, a trailing wall 206, an upper wall 208, and a lower wall 210. Each of the second orifices 200 may extend through the trailing wall 206 of the connector housing 102 into the cavity 108 of the connector housing 102 and is adapted to receive a cable connector 500 therein (see, e.g.,
The upper wall 208 and lower wall 210 extend substantially perpendicular to the trailing wall 206. The first orifices 110, second orifices 200, and tongue recesses 204 extend substantially parallel to the upper wall 208 and lower wall 210. The clip receiving portions 202 extend substantially perpendicular to the upper wall 208 and lower wall 210. The connector housing 102 may be formed from a lightweight dielectric material, such as 15% glass filled Polybutylene Terephthalate (PBT), to achieve the required geometry while reducing weight and satisfying the requirements of Underwriters Laboratories (UL) flammability testing, such as the V-0 vertical rating. The connector housing 102 include any number of second orifices 200, such as twenty-four, for receiving corresponding number of cable connectors 500 therein.
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The tongue portion 302 extends rearward from the main body 300 substantially perpendicular to the rounded engagement surface 306 and is adapted to provide leverage when moving the retention clip 104 between the first stage (
The tongue portion 302 includes a chamfered edge 310 that is adapted to create a tool access 600 (
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The flared opening portion 404 extends from the top of the rectangular orifice 410 through the upper wall 208 (or lower wall 210) of the connector housing 102. The flared opening portion 404 is of substantially the same thickness “T” and width “W” as the rectangular orifice 410 where the two intersect, but the width of the flared opening portion 404 increases as the flared opening portion 404 extends away from the rectangular orifice 410. The larger opening provided by the flared opening portion 404 at the top of each clip receiving portion 202 guides the individual retention clip 104 into each clip receiving portion 202, such as when the multi-port cable connector 100 is being assembled.
The pair of first grooved engagement surfaces 406 and pair of second grooved engagement surfaces 408 are disposed in the sidewalls 400 of the clip receiving portion 202 between the rounded lower surface 402 and the flared opening portion 404. The pair of first grooved engagement surfaces 406 are disposed above the pair of second grooved engagement surfaces 408, closer to the flared opening portion 404. The pair of first grooved engagement surfaces 406 are disposed a predetermined distance “D” from the pair of second grooved engagement surfaces 408 so that there is a portion of sidewall 400 disposed therebetween that physically separates the pair of first grooved engagement surfaces 406 from the pair of second grooved engagement surfaces 408.
Each pair of first grooved engagement surfaces 406 and second grooved engagement surfaces 408 is adapted to receive the notched engagement surfaces 312 on a corresponding pair of engagement arms 304 of a retention clip 104. When the engagement surfaces 312 are disposed in the pair of first grooved engagement surfaces 406, the retention clip 104 will be positioned in the first stage (
When a retention clip 104 is positioned in the second stage (
The position of each retention clip 104 is important because it indicates whether that retention clip 104 is in the second stage (
Because of the retaining ring 506, a special tool is required to remove the cable connector 500 from conventional connector housings. The special insertion tool is needed to bias the retaining ring 506 inwardly and disengage it a corresponding annular groove in the conventional connector housing. The special tool cannot be inserted from a rear area of the connector housing. Thus, not only is it difficult to access and depress the retaining ring 506 in that manner, the entire connector housing must be removed from an electronic component to remove a single cable connector.
The connector housing 102 and retention clips 104 of present invention eliminate the need for a retaining ring 506 on the cable connector 500 and a special insertion tool and allow each cable connector 500 to be removed individually without removing the entire multi-port cable connector 100. Moreover, the connector housing 102 and retention clips 104 of present invention can be adapted to mate with substantially any preexisting cable connector 500 designed with an annular groove 502, which provides reverse compatibility between the multi-port cable connector 100 and cable connectors 500 such as the AMPHENOL MCX brand coaxial cable connectors.
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A further advantage of the multi-port cable connector 100 of the present invention is that, by providing two stages for engaging the retention clips 104 within the clip receiving portions 202, the retention clips 104 maintain their respective positions in the connector housing 102 in both stages and will not fall out of the connector housing 102. Accordingly, retention clips 104 will not be misplaced as easily and the multi-port cable connector 100 can be shipped with the retention clips 104 pre-installed, preferably in the first stage (
In addition, by disposing the retention clips 104 wholly within the connector housing 102 and providing access to each retention clip 104 from an area behind the multi-port cable connector 100 relative to the electronic component, the multi-port cable connectors 100 of the present invention can be stacked in close proximity to each other on an electronic component, such as a headend. And, even though the multi-port cable connectors 100 may be densely populated on an electronic component, each retention clip 104 remains individually accessible to allow the installation or removal of individual cable connectors 500 at any one of the many cable ports in each multi-port cable connector 100 without having to remove the entire multi-port cable connector 100 from the electronic component.
The foregoing description and drawings should be considered as illustrative only of the principles of the invention. The invention may be configured in a variety of shapes and sizes and is not intended to be limited by the preferred embodiment. Numerous applications of the invention will readily occur to those skilled in the art. Therefore, it is not desired to limit the invention to the specific examples disclosed or the exact construction and operation shown and described. Rather, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.
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3709461 | Oct 1987 | DE |
5299134 | Nov 1993 | JP |