The present disclosure is directed to connectors and, more specifically, to connectors for use with a single-twisted pair of conductors.
A single twisted pair of conductors can be used to transmit data and/or power over a communications network that includes, for example, computers, servers, cameras, televisions, and other electronic devices including those on the internet of things (IoT), etc. In the past, this has been performed through use of Ethernet cables and connectors which typically include four pairs of conductors that are used to transmit four differential signals. Differential signaling techniques, where each signal is transmitted over a balanced pair of conductors, are used because differential signals may be impacted less by external noise sources and internal noises sources such as crosstalk as compared to signals that are transmitted over unbalanced conductors.
In Ethernet cables, the insulated conductors of each differential pair are tightly twisted about each other to form four twisted pairs of conductors, and these four twisted pairs may be further twisted about each other in a so-called “core twist.” A separator may be provided that is used to separate (and hence reduce coupling between) at least one of the twisted pairs from at least one other of the twisted pairs. The four twisted pairs and any separator may be enclosed in a protective jacket. Ethernet cables are connectorized with Ethernet connectors; a single Ethernet connector is configured to accommodate all four twisted pairs of conductors. However, it is possible that data and/or power transfer can be effectively supported through a singled twisted pair of conductors with its own more compact connector and cable. Accordingly, a connector design different from a standard Ethernet connector is needed.
A family of connectors to accommodate a single twisted pair of conductors is disclosed herein. The family of connectors includes a free connector, a fixed connector, and an adapter; the free and/or fixed connectors can be modified to accommodate the adapter configuration and/or modified to accommodate various patch cord configurations. In certain embodiments, the one or more of the family of connectors adopts an LC fiber optic style connector configuration and an LC fiber optic footprint configuration. In certain examples, one or more of the family of connectors adopts an LC fiber optic style connector configuration but in a footprint that is larger or smaller than the footprint of the LC fiber optic footprint. Other configurations may also be adopted.
An aspect of the present disclosure is directed to a connector. The connector, for example a free connector, for a single twisted pair of conductors includes an LC style fiber optic connector housing, a connector insert that is receivable within connector housing, and first and second socket contacts. The first and second socket contacts are receivable within first and second channels of the connector insert. The first and second channels place the first and second socket contacts in an offset orientation. The first and second contacts are configured to be coupled to first and second conductors of a single twisted pair of conductors.
Another aspect of the present disclosure is directed to a different connector. This connector, for example a fixed connector, for a single twisted pair of conductors includes a body portion having a port, a panel, and first and second pin contacts. The panel has a first face and a second face, and is mechanically coupleable to the body portion. The first and second pin contacts each have a first portion that is received in respective first and second pin channels that are defined in the body portion; the first portion of the pin contacts extends into the port. The first and second pin contacts have a second portion outside the pin channels. The second portion is fixed in position relative to the body portion by a stabilizing feature that extends from the first face of the panel when the panel is mechanically coupled to the body portion. The second portions can be crossed, e.g. include one or more twists. The first and second pin channels place the first portions of the first and second pin contacts in an offset orientation.
Another aspect of the present disclosure is directed to an adapter. The adapter for coupling two single twisted pair of conductors includes a body portion having a first and second port, a panel, and a single twisted pair of conductors. The panel has a first and second face, and is mechanically coupled to the body portion. Each of the conductors of the single twisted pair has a first end comprising a pin contact and a second end comprising a pin contact. The pin contacts of the first ends are received within offset corresponding pin channels defined in the body portion and extend into the first port. The pin contacts of the second ends are received within offset corresponding pin channels defined in the body portion and extend into the second port. A twisted portion of the pair of conductors, which is intermediate the first and second ends, lies within the body portion. A stabilizing feature extending from a first face of the panel stabilizes the position of the pin contacts relative to the body portion when the panel is mechanically coupled to the body portion.
Still another aspect of the present disclosure is directed to a patch cord. The patch cord includes a twisted pair of conductors. The twisted pair of conductors can be connectorized at each end by a free connector, connectorized at each end by a fixed connector modified to patch cord configuration, or connectorized at a first end by a free connector and at a second end by a fixed connector modified to a patch cord configuration.
A family of connectors to accommodate a single twisted pair of conductors is disclosed herein. The family of connectors includes a free connector, a fixed connector, and an adapter; the free and/or fixed connectors can be modified to accommodate various patch cord and mounting configurations. In certain embodiments, the one or more of the family of connectors adopts an LC fiber optic style connector configuration and an LC fiber optic footprint configuration. In certain examples, one or more of the family of connectors adopts an LC fiber optic style connector configuration but in a footprint that is larger or smaller than the footprint of the LC fiber optic footprint. Other configurations may also be adopted.
Referring to
Referring to
Referring once again to
The connector housing 102 of the free connector 100 includes an elongate body portion 110 having first and second side walls 112, 114 connected by upper and lower walls 116, 118, respectively, to establish a square or substantially square forward face 120. The connector housing 102 further includes a rear portion 122 that extends rearward from the elongate body portion 110. The rear portion 122 has side walls 124, 126 connected by upper and lower walls 128, 130, respectively, to establish a square or substantially square rear face 132 of the connector housing 102. The outer dimensions of the rear portion 122 are reduced from the outer dimensions of the elongate body portion 110 to accommodate a rear cover 131 or boot to enclose the rear face 132 of the connector housing 102. In certain embodiments, the rear cover 131 includes a strain-relief feature. A central channel 134 of a consistent or varying cross-section extends through the connector housing 102 from the forward face 120 to the rear face 132. In instances, where the connector housing 102 is varying from the LC style connectors, the exterior and/or interior cross-sections of the connector housing 102 can assume a shape (e.g. round, oval, rectangular, triangular, hexagonal, etc.) that is different from a squared shape.
The connector housing 102 includes a snap latch 136 on the upper wall 116 of the elongate body portion 110. The snap latch 136 can be positioned proximate the forward face 120 of the connector housing 102 as illustrated or can be positioned further rearward along the upper wall 116 as appropriate to enable a releasable interface or coupling with a corresponding fixed connector or adapter, described below. In certain example embodiments, at least one of the side walls 112, 114 includes a cantilevered latch 138 that interfaces with the connector insert 104 to retain the connector insert 104 within the central channel 134 when inserted therein.
In certain example embodiments, the connector housing 102 includes a keying feature that is provided within the central channel 134 to ensure that the connector insert 104 is inserted into the connector housing 102 in a correct orientation. In the example embodiment of
In certain example embodiments, the connector housing 102 includes a stop feature to help ensure proper forward positioning and/or prevent over-insertion of the connector insert 104. In the example embodiment of
The connector insert 104 includes a body portion 144 having first and second side walls 146, 148 connected by upper and lower walls, 150, 152, respectively. A forward face 154 of the body portion 144 includes two apertures 156, 158 behind which extend first and second channels 160, 162, respectively. The first and second channels 160, 162 extend from the forward face 154 out through a rear face 164. The body portion 144 is configured to be received within the central channel 134 of the connector housing 102 such that the forward face 154 of the body portion 144 is proximate the forward face 120 of the connector housing. In certain examples, when inserted into the connector housing 102, the entirety of the connector insert 104 is maintained within the elongate body portion 110 of the connector housing 102.
In certain examples, each of the first and second channels 160, 162 of the connector insert 104 includes one or more bosses 166 and a lip edge 168 proximate the rear face 164. When the socket contacts 106a, 106b are inserted in their respective first and second channels 160, 162, each boss 166 operates to position the socket contacts 106a, 106b, so as to be axially aligned with the apertures 156, 158 of the forward face 154. The boss 166 also operates to establish an interference fit between the socket contacts 106a, 106b and their respective first and channels 160, 162 to help maintain the socket contacts 106a, 106b within the first and second channels. The lip edge 168 also aids in positioning each socket contact 106a, 106b, so as to place each socket contact 106a, 106b forward most in their respective first and second channels 160, 162 proximate the forward face 154 of the connector insert 104, and to prevent the socket contacts 106a, 106b, from being pulled rearward out of their respective first and second channels 160, 162 and out of the connector insert 104 itself. Other features and/or elements can also, or alternatively, be used to retain the socket contacts 106a, 106b within the first and second channels 160, 162 without departing from the spirit of the disclosure.
In certain examples, the apertures 156, 158 and respective first and second channels 160, 162 are stacked vertically or positioned side-by-side horizontally. However, in order to minimize the crosstalk between adjacent contact pairs when a plurality of connectors 100 are deployed near one another, in certain examples, the apertures 156, 158 and respective first and second channels 160, 162 are provided in an offset configuration (see
In certain examples, at least one of the side walls 146, 148 of the connector insert 104 includes a ramped tab 170 that protrudes outwardly therefrom. When inserting the connector insert 104 within the connector housing 102, the ramped tab 170 allows the connector insert 104 to pass the cantilevered latch 138 of the connector housing 102 for full insertion and subsequently engages the cantilevered latch 138 preventing rearward movement or removal of the connector insert 104 from the connector housing 102. Other features and/or elements can also, or alternatively, be used to retain the connector insert 104 within the connector housing 102 without departing from the spirit or scope of the disclosure.
In certain examples, the connector insert 104 includes a keying feature that is configured to interface with the keying feature of the connector housing 102. In the example of
In certain examples, the connector insert 104 includes a stop feature. In the example of
Each of the socket contacts 106a, 106b includes a tip contact 176 and a ring contact 178. Each socket contact 106a, 106b comprises a hollow cylinder having a rear end 180 and a forward end 182. An internal diameter 184 of the rear end 180 of each socket contact 106a, 106b, can be sized to receive a respective one of the conductors 12, 14 (or 22, 24, or 26, 28, see
The free connectors 100 can be configured in a simplex form or combined in a duplex form similar to that available with LC fiber optic connectors (see
The fixed connector 300 is a two-piece component comprising a body portion 302 and a rear panel 304; the rear panel 304 enables placement of pin conductors 306a, 306b within the body portion 302.
The body portion 302 includes first and second side walls 308, 310 connected by upper and lower walls 312, 314. The first and second side walls 308, 310, and the upper and lower walls 312, 314 frame an open forward portion 316 that presents a port 318 within the body portion 302 that is configured to receive the free connector 100. A notch 320 proximate the upper wall 312 is configured to interface with the snap latch 136 to removably retain the free connector 100. A rear plate 322 of the body portion 302 fills that gap between walls 308, 310, 312, 314 save for a pin cavity 324 and pin channels 325 extending therefrom. The pin channels 325 are configured to receive the pin conductors 306a, 306b while the pin cavity 324 is configured to house the portion of the pin conductors 306a, 306b not within the pin channels and to interface with the rear panel 304. First and second notches 326, 328 extend through first and second side walls 308, 310, respectively, to the rear plate 322 and are configured to interface with the rear panel 304.
Referring to
The rear panel 304 includes a forward face 342 and a planar rear face 344. The forward face 342 is provided with a pair of forward extending tabs 346, 348 that are configured to interface with the first and second notches 326, 328 to fixedly, or removably, secure the rear panel 304 to the body portion 302 through an interference fit. In certain embodiments, a latching mechanism can be used additionally or alternatively to the interference fit to secure the rear panel 304. The forward face 342 is further provided with a forward extending upper stabilizer 350 curving toward a central location 352 and a forward extending lower stabilizer 354 curving toward the same central location 352. A pin stabilizer 356 is provided to either side of the upper stabilizer 350.
The pin conductors 306a, 306b each include a first end 358 and a second end 360. Each pin conductor 306a, 306b is bent to approximate a right angle between the first and second ends 358, 360 so that the first end 358 extends through the rear plate 322 and into the port 318. While within the port 318, the first ends 358 are to be received in the forward end 182 of the socket contacts 106a, 106b to make an electrical connection therewith when the free connector 100 is inserted into the port 318. The second end 360 of each of the pin conductors 306a, 306b extends through the lower wall 314. The first ends 358 of the pin conductors 306a, 306b are arranged to be offset from one another consistent with the offset of the socket contacts 106a, 106b while that second ends 360 of the pin conductors 306a, 306b are crossed proximate the right angle bend; the offset and crossing of the pin conductors 306a, 306b helps to minimize, or prevent, cross-talk between the pin conductors 306a, 306b and the pin conductors of vertically or horizontally proximate like connectors. In certain embodiments, the pin conductors 306a, 306b can be stacked horizontally or vertically to correspond to a placement of the socket contacts 106a, 106b. In certain embodiments, the pin conductors 306a, 306b are of equivalent lengths while in other embodiments the pin conductors 306a, 306b are of differing lengths.
Additional information about pin conductors and their positioning to minimize, or prevent, cross-talk can be found in U.S. Pat. No. 9,407,043 entitled “Balanced Pin and Socket Connectors” and U.S. Pat. No. 9,590,339 entitled “High Data Rate Connectors and Cable Assemblies that are Suitable for Harsh Environments and Related Methods and Systems.” Each of the noted patents is hereby incorporated by reference.
When assembling the fixed connector 300, the first ends 358 of each of the pin conductors 306a, 306b are inserted into pin cavity 324, and corresponding pin channels 325, in their offset positions; a divider 362, which comprises a portion of the rear plate 322, separates the second ends 360 of the pin conductors 306a, 306b within the pin cavity 324. The rear panel 304 is then secured to the body portion 302 of the fixed connector 300. The second ends 360 of the pin conductors 306a, 306b pass through the central location 352 at the rear panel 304 where the upper and lower stabilizers 350, 354 help maintain/fix the position of the pin conductors 306a, 306b relative to the body portion 302; the upper and lower stabilizers 350, 354 are received within the pin cavity 324. In certain embodiments, an interference fit occurs between the upper and lower stabilizers 350, 354 and the pin cavity 324 to assist in securing the rear panel 304 to the body portion 302 of the fixed connector 300. The pin stabilizers 356 press against each of the pin conductors 306a, 306b to ensure that they are fully, forwardly positioned within the pin channels of the fixed connector 300 as well as to maintain/fix their position.
The fixed connectors 300 can be configured in a simplex form or combined in a duplex form similar to that available with LC fiber optic connectors (see
In certain embodiments, when the free connector 100 and/or fixed connector 300 are configured in the LC style and/or footprint, one or both of the connectors 100, 300 can be provided with a blocking feature, to prevent the insertion of the free connector 100 into an actual LC fiber optic adapter or LC fiber optic active device receptacle and/or to prevent an actual LC fiber optic connector from being inserted into the fixed connector 300. In the example of
The adapter 700 generally comprises a pair of fixed connectors 300 that are modified to be electrically and mechanically coupled to one another rather than being individually coupled to a circuit board. In certain embodiments, the adapter 700 comprises a two-piece component having a continuous body portion 702 that defines two ports 704 and an upper (or lower) panel 706 that is configured for coupling to the body portion 702. The body portion 702 defines an upper (or lower) channel 705 into which can be placed a single twisted pair of conductors 708, 710 where each has a pin contact first end 712 and a pin contact second end 714 that can be inserted into corresponding pin channels 716 formed in the body portion 702. The upper panel 706 can be configured with various outward extending stabilizing features to help position and/or maintain the position of the pin contacts 712, 714 in an offset orientation corresponding to the socket contacts 106a, 106b of the free connector 100 that will be received in each of the ports 704. The upper panel 706 can include outward extending tabs 718 or other type of mechanism for coupling the upper panel 706 to the body portion 702.
It will also be appreciated that aspects of the above embodiments may be combined in any way to provide numerous additional embodiments. These embodiments will not be described individually for the sake of brevity.
While the present invention has been described above primarily with reference to the accompanying drawings, it will be appreciated that the invention is not limited to the illustrated embodiments; rather, these embodiments are intended to disclose the invention to those skilled in this art. In the drawings, like numbers refer to like elements throughout. Thicknesses and dimensions of some components may be exaggerated for clarity.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with out departing from the scope of the present invention. It will also be understood that the terms “tip” and “ring” are used to refer to the two conductors of a differential pair and otherwise are not limiting.
Spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper”, “top”, “bottom” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Well-known functions or constructions may not be described in detail for brevity and/or clarity. As used herein the expression “and/or” includes any and all combinations of one or more of the associated listed items.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including” when used in this specification, specify the presence of stated features, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, operations, elements, components, and/or groups thereof.
Herein, the terms “attached”, “connected”, “interconnected”, “contacting”, “mounted” and the like can mean either direct or indirect attachment or contact between elements, unless stated otherwise.
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.
This application is being filed on Apr. 24, 2018 as a PCT International Patent Application and claims the benefit of U.S. Patent Application Ser. No. 62/489,164, filed on Apr. 24, 2017, and claims the benefit of U.S. Patent Application Ser. No. 62/635,227, filed on Feb. 26, 2018, the disclosures of which are incorporated herein by reference in their entireties.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/US2018/029146 | 4/24/2018 | WO | 00 |
Number | Date | Country | |
---|---|---|---|
62489164 | Apr 2017 | US | |
62635227 | Feb 2018 | US |