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 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 plug, receptacle and adapter with the plug incorporating beam contacts, and the receptacle and adapter incorporating interfacing arched beam contacts. A z-configuration of the port(s) within the receptacle and adapter is configured to interface with the plug, which also presents a z-configuration. The parallel, upper and lower portions of the z-configuration of the plug incorporate the beam contacts. The first beam contact of the plug is rotated 180 degrees from the second beam contact of the plug; the arched beam contacts are similarly rotated. The plug, receptacle and adapter of a small form factor that is similar or identical to the formal factor of an optical fiber LC connector. The plug and receptacle can be configured for circuit board, cable or patch cord mounting.
An aspect of the present disclosure is directed to a connector for a single twisted pair of conductors. The connector includes a plug housing, a first beam contact and a second beam contact. The plug housing presents a forward face having a z-configuration that includes a first portion offset from a second portion; the first and second portion connected by a central portion. The first beam contact is mounted within the plug housing and has an exposed portion proximate the first portion of the forward face of the plug. Similarly, the second beam contact is mounted within the plug housing and has an exposed portion proximate the second portion of the forward face of the plug. The first beam contact has an opposite orientation to the second beam contact, e.g. the first beam contact is rotated 180 degrees relative to the second beam contact. The first and second beam contacts are electrically coupled to a single twisted pair of conductors.
Another aspect of the present disclosure is directed to another connection for a single twisted pair of conductors. This connection includes a receptacle housing, a first arched beam contact, and a second arched beam contact. The receptacle housing presents a forward face defining a port having a z-configuration, e.g. the port includes a first portion offset from a second parallel portion with the first and second portions connected by a central portion. The first arched beam contact is enclosed within the receptacle housing and is positioned proximate the first portion of the forward face of the receptacle. Similarly, the second arched beam contact is enclosed within the receptacle housing and is positioned proximate the second portion of the forward face of the receptacle. The first arched beam contact has an opposite orientation to the second arched beam contact, e.g. the first arched beam contact is rotated 180 degrees relative to the second arched beam contact. The first and second arched beam contacts are electrically coupled to a circuit board or to first and second conductors of a single twisted pair of conductors.
Another aspect of the present disclosure is directed to an adapter for coupling two single twisted pairs of conductors. The adapter includes a body portion that has first and second ports. Each of the first and second ports includes first and second arched beam contacts that are accessible via the ports. Each of the first and second ports is configured to interface with a two-contact only connector such as the plug connector described herein.
Still another aspect of the present disclosure is directed to a patch cord. The patch cord includes a cable having a single twisted pair of conductors with each of the conductors having a first end and a second end. The first ends of the twisted pair are electrically coupled to one of the plug or receptacle described herein while the second ends of the are similarly electrically coupled to one of the plug or receptacle described herein.
Still another aspect of the present disclosure is directed to a system that includes one or more of the plugs described herein and an equal number of one or more receptacles described herein. Each plug is configured to interface both mechanically and electrically with a corresponding receptacle.
A family of connectors to accommodate a single twisted pair of conductors is disclosed herein. The family of connectors includes a plug, a receptacle, and an adapter; the plug and/or receptacles can be modified to accommodate various wiring, patch cord and mounting configurations. The connectors have a small form factor, such as an optical fiber LC connector format factor. The receptacle and adapter utilize a pair of arched beam contacts that are configured to interface with the pair of beam contacts of the plug. The plug and receptacle can be utilized in a single plug/single receptacle configuration or in a multi-plug/multi-receptacle configuration. The interfacing pair of arched beam contacts and beam contacts are maintained in an offset, noise-cancelling, orientation due to z-shaped port in the receptacle and a corresponding z-shaped plug.
Referring to
Each of beam contacts 110a, 110b includes a forward end 112, a rearward end 114, and an elongate central portion 116 connecting the forward end 112 and the rearward end 114. Each rearward end 114 includes a pair of tines 118a, 118b that can be an insulation piercing contact (IPC), as depicted in
Each of arched beam contacts 210a, 210b includes a forward end 212, a rearward end 214 and an arched central portion 216 connecting the forward end 212 and rearward end 214. Each rearward end 214 can be crimped, fused, welded or otherwise electrically coupled to a printed circuit board (PCB) or other electrical device. In certain embodiments, the rearward end 214 of each of the arched beam contacts 210a, 210b can be configured for electrical coupling with a conductor, e.g. conductor 12 or 14, of a single twisted pair cable.
As seen in
The first side 122a of the housing 120 includes an open forward portion 124 and a rear portion 126 that is substantially enclosed. The open forward portion includes a vertical sidewall 128 that stands perpendicular to an elongate trough 130 that defines a channel 132 for placement of the forward end 112 and at least part of elongate central portion 116 of the beam contact 110b. The rear portion 126 includes a stop block 134 and a compartment housing 135 positioned rear of the stop block 134. The stop block 134 prevents over-insertion of the plug 100 within the receptacle 200; a slot 136 below the stop block 134 enables the central portion 116 of the beam contact 110b to pass underneath the stop block 134 and into an open compartment 138 of the compartment housing 135.
The compartment housing 135 is configured to accommodate the rearward end 114 of the beam contact 110b. A first opening 140 in a rear face 141 of the compartment housing 135 enables insertion of an insulated conductor, e.g. conductor 12 or 14 of
The forward portion 246 of the housing 220 further includes a forward face 248 defining an opening 250, which has a z-configuration, to the port 244 that accommodates the offset, z-configuration of the plug 100. The z-configuration opening 250 of the forward face 248 includes a first portion 252 and a second portion 254 connected by a central portion 256 (see
Upon insertion of the plug 100 within the receptacle 200, the beam contact 110a of the plug 100 is placed in contact with, and electrically coupled to, the arched beam contact 210a of the receptacle 200. Similarly, the beam contact 110b of the plug 100 is placed in contact with, and electrically coupled to, the arched beam contact 210b of the receptacle 200. The vertical sidewall 128 of the plug 100 helps to keep the two pairs of electrically coupled contacts separate. Further, the offset, z-configuration of the two pairs of electrically coupled contacts helps to neutralize cross-talk between the pairs of contacts of proximate adjacent connectors. A tension fit helps to maintain the inserted plug 100 within the receptacle 200. The spring-like action of the arched beam contacts 210a, 210b helps to maintain contact with the beam contacts 110a, 110b and also helps to retain the plug 100 within the receptacle 200.
Referring to
Referring to
Referring to
The details of the housing 1120 of the plug 1100 are best appreciated with reference to
The main body portion 1122 presents a forward portion 1130 that includes a first channel 1132 separated by a wall 1134 from a second channel 1136. The first channel 1132 is additionally bounded by a first side wall 1138 while the second channel 1136 is additionally bounded by an opposing second side wall 1140. The first and second side walls 1138 and 1140 are connected by a lower wall 1142 and an opposing upper wall 1144. The upper wall 1144 is topped with a flexible latch 1146. The first channel 1132 receives the beam contact 1110a at an uppermost position within the channel 1132, e.g. proximate the upper wall 1144, while the second channel 1136 receives the beam contact 1110b at a lowermost position within the channel 1136, e.g. proximate the lower wall 1142.
The main body portion 1122 of the plug 1100 further presents a rearward portion 1145 that includes an upper recess 1150 positioned behind the second channel 1136 and a lower recess 1152 positioned behind the first channel 1132 (see
Referring to
The contact inserts 1124, see
As noted above, the beam contacts 1110a, 1110b are offset from one another with the beam contact 1110a at an uppermost position within the first channel 1132, e.g. proximate the upper wall 1144, and the beam contact 1110b at a lowermost position within the channel 1136, e.g. proximate the lower wall 1142. For example, the beam contacts 1110a, 1110b may be in a parallel orientation but have positions offset from one another (e.g. offset from 10 to 80 degrees, offset from 20 to 70 degrees, offset from 30 to 60 degrees, offset 40 to 50 degrees, offset by 45 degrees, etc.) such that one of the beam contacts 1110a is presented in a first half of the plug 1100 and the other of the beam contacts 1110b is presented in the second half of the plug 1100. The offset position of the beam contacts 1110a, 1110b helps to neutralize cross-talk between the pairs of contacts of proximate adjacent connectors. In certain embodiments, one or both of the pair of contact inserts 1124 includes a retaining tab 1164 to help maintain its position in the upper and lower recesses 1150, 1152 relative to the main body portion 1122 (see
The external body portion 1126 of the housing 1120 of the plug 1100 can be of a unitary configuration that slides over the boot 1128, which covers the rearward portion 1145 of the main body portion 1122, to cover the contact inserts 1124 or can be of a multi-piece configuration, e.g. see
The boot 1128 can provide a seal about the cable 10 and/or protective covering over the conductors 12, 14 extending from the cable 10. The boot 1128 includes a central channel 1172 which generally conforms to the size and shape of the rearward portion 1145 of the main body portion 1122 including a tapering of the channel 1172 to accommodate the cable 10. The forward face 1174 of the boot 1128 is received within the central cavity 1166 of the external body portion 1126 and is held in place therewith.
Upon insertion of the plug 1100 within the receptacle 1200, the beam contact 1110a of the plug 1100 is placed in contact with, and electrically coupled to, the arched beam contact 1210a of the receptacle 1200. Similarly, the beam contact 1110b of the plug 1100 is placed in contact with, and electrically coupled to, the arched beam contact 1210b of the receptacle 1200. The wall 1134 separating the first channel 1132 of the plug 1100 from the second channel 1136 of the plug keeps the two pairs of electrically coupled contacts, 1110a/1210a and 1110b/1210b, separate. Further, the offset orientation of the pairs of electrically coupled contact helps to neutralize cross-talk between the pairs of contacts of proximate adjacent connectors.
As with the plug 100 and receptacle 200, the plug 1100 and receptacle 1200 can be utilized in adapter configurations, multi-plug and/or multi-receptacle configurations, and/or patch cord configurations as described herein. Further, as with the plug 100 and the receptacle 200, the plug 1100 and receptacle 1200 have a small form factor such as a form factor that is identical or similar to the form factor of an LC connector, a standard connector used in fiber optics. Other sizes and/or form factors are also possible. It should be noted that, while the plug embodiments have been described as presenting the beam contacts and the receptacle embodiments presenting the arched beam contacts, a reversal of contacts is also possible. For example, the plug embodiments can utilize the arched beam contacts and the receptacle can utilized the beam contacts. In another example, the plug includes one of a beam contact and one of an arched beam contact while the receptacle similarly includes one of a beam contact and one of an arched beam contact.
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, without departing from the scope of the present invention.
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 a National Stage Application of PCT/US2019/014906, filed on Jan. 24, 2019, which claims the benefit of U.S. Patent Application Ser. No. 62/622,562, filed on Jan. 26, 2018, the disclosures of which are incorporated herein by reference in their entireties. To the extent appropriate, a claim of priority is made to each of the above disclosed applications.
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WO2019/147774 | 8/1/2019 | WO | A |
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