1. Technical Field
The present disclosure is directed to connector assemblies, combinations and methods for use with wires and cables. The disclosure is further directed to connector assemblies, combinations and methods that include a sub-assembly and are adapted for use with foil-shielded twisted pair (FTP) cables.
2. Background Art
Twisted pair cabling is a form of wiring in which two conductors (wires/cables) are wound together for the purposes of canceling out electromagnetic interference (EMI), electromagnetic radiation from unshielded twisted pair (UTP) wires/cables, crosstalk between neighboring pairs of cable/wire, or radiofrequency interference (RFI). Twisting wires/cables decreases interference because the loop area between the wires is reduced. In balanced pair operation, two wires/cables typically carry equal and opposite signals which are combined by addition at the destination. The common-mode noise from the two wires/cables helps to cancel each other because the two wires have similar amounts of EMI that are 180 degrees out of phase.
In order to further reduce interference and other sources of signal deterioration, electrical wires/cables often further include an insulating jacket surrounding each individual wire, a metal foil or braided sheath surrounding twisted wire/cable pairs and a drain wire. Twisted pair wires/cables are often shielded in attempt to prevent electromagnetic interference, but, because the shielding is made of metal, shielding may also serve as a ground. However, a shielded or screened twisted pair wire/cable usually has a special grounding wire added called a drain wire. A drain wire directs extraneous signals to ground. Shielding can be applied to individual wire/cable pairs, or to a collection of pairs. When shielding is applied to the collection of all pairs of wires/cables present, the shielding is referred to as screening. Shielding must usually be grounded for the shielding to function properly. Cables which include at least one twisted wire/cable pair (in which the wires/cables may be individually insulated), a drain wire, a metal foil or sheath surrounding the twisted pair(s) and drain wire, and an insulating jacket surrounding the wires/cables and the metal foil or sheath are commonly referred to as foil-shielded twisted pair (FTP) cables.
An FTP cable may be terminated by a connector assembly, such as a jack, that is adapted to operatively engage a mating connector, such as a plug. A jack typically includes a housing, sometimes made from several individual parts, that is manufactured from non-conductive material(s). A jack assembly may include a metal wrap to provide similar interference prevention as the metal foil or sheath in an FTP cable. Stated differently, a metal wrap in a jack housing, or other similarly functioning mechanism, may serve as a continuation of the foil wrap or shielding of an FTP cable so that continuity of shielding is provided to and through the connection into the jack housing. In such shielded jacks, the drain wire of an FTP cable may be secured to the metal wrap. A mating shield plug may be engaged within a shielded jack, and the metal shield of the jack may contact the metal wrap of the jack, thereby providing electrical continuity.
An end user of a connector assembly (also known as a jack) is the installer. An end user typically connects an FTP cable to a corresponding jack manually—i.e., by physically exposing the wire/cable of the twisted pair(s), exposing the terminals located inside the jack housing if they are not already exposed, connecting the wires/cables to the terminals, and, finally, assembling the jack into its final form. The final form of a connector assembly commonly includes a covering or other protecting mechanism over the wire-terminal connections.
As an example, WO 2008/081087 discloses a socket to be mounted on a multi-conductor cable and includes a removable comb defining a central channel, a connection terminal block, and a screw and nut assembly. According to WO 2008/081087, the screw is fixedly mounted on the removable comb for axial translation and rotation relative the axis (X) of the socket. The terminal block includes two columns that prevent the rotation of the comb. The screw defines two helical slopes capable of engaging corresponding helical notches defined by the columns of the connection terminal block. As the screw is rotated, the helical slopes and helical notches interact and a torque is created. This torque causes translation between the screw and the terminal block, ultimately resulting in a secure connection between the screw, comb and terminal block.
It is important for an end user to securely connect the FTP wire/cable to the jack housing because a secure connection can prevent the FTP cable from pulling away from the housing and therefore cause the twisted pair wires from disconnecting or disengaging from the terminals located inside the jack housing. As discussed above, to ensure proper functionality it is important that an end user securely engages the subcomponents of a jack to one another, provides continuity of shielding to and through the connection into the jack housing, and provides a secure connection between the terminals of the jack and the individual FTP wires.
Despite efforts to date, a need remains for connector assemblies, combinations and methods that provide enhanced FTP cable-to-jack connections. A need also remains for connector assemblies, combinations and methods that provide for improved connector assembly construction wherein each sub-component of the connector assembly can be easily secured to one another by an end user. Yet another need remains for connector assemblies, combinations and methods that provide enhanced FTP wire-to-terminal connections and shielding. These and other needs are satisfied by the connector assemblies, combinations and methods disclosed herein.
The present disclosure is directed to connector assemblies, combinations and methods. The disclosed connector assemblies, combinations and methods may have particular utility in FTP cables or wiring applications, but the disclosure is not limited to such applications and/or limitations. In exemplary embodiments, the disclosed connector assemblies and sub-assemblies facilitate interaction between a wire or cable interacting with the connector assembly (also known as a jack) or sub-assembly and the wire or cable interacting with a plug. Thus, in an exemplary embodiment, the disclosed connector assemblies define a first jack that is configured and dimensioned to electrically cooperate with a first plug. In another exemplary embodiment, the disclosed connector assemblies define a first jack that is configured and dimensioned to electrically cooperate with a first plug and an FTP cable including a drain wire.
The disclosed connector assemblies, systems, combinations and techniques support enhanced cable-to-jack connection. The assemblies, systems, combinations and techniques also support enhanced assembly of jack sub-components and use by an end user. Stated differently, the disclosed jack configuration and design provides for a jack containing securely connected sub-components, a secure, shielded jack-FTP cable/wire connection, and a jack that can be easily assembled and used by an end user.
The present disclosure provides for connector assemblies and sub-assemblies including securely joined sub-components. The sub-components which makeup the disclosed connector assemblies and sub-assemblies may be secured to one another through the use of deflectable latching members and corresponding latching slots. Also, such connector assemblies and sub-assemblies may include sub-components secured to one another through the use of a cam nut engaged into a cam slot of a cam member which extends from a sub-component and passes through several other sub-components. The disclosed connector assemblies, combinations and methods may also include a contact capable of engaging an FTP cable, drain wire and metal foil or sheath through the application and rotation of a cam nut with cam threads engaged in a cam slot of a cam member extending from one sub-component and passing through other sub-components. In fact, the disclosed exemplary embodiments may include a cam nut which serves to (1) interface with a front assembly and securely mate the front assembly to a rear assembly and complete FTP wire-to-terminal connection, and (2) deflect a contact to engage or interfere with a drain wire and/or shielding of an FTP cable.
The disclosed sub-components may include, for example, a jack housing, contact insert, printed circuit board (including plug connection elements and connection terminals), first sub-assembly housing, second sub-assembly housing, routing cap, cam nut and/or a deflectable contact.
Additional features, functions and benefits of the disclosed connectors, combinations and techniques will be apparent from the detailed description which follows, particularly when read in conjunction with the appended figures.
To assist those of skill in the art in making and using the disclosed connectors, systems, combinations and techniques, reference is made to the accompanying figures, wherein:
Well-known functions or constructions may not be described in detail for brevity and clarity. As used herein, the term “drain wire” means an un-insulated wire in a cable that is in contact with a shield of the cable, such as a metal foil or sheath, throughout a major portion of its length. As used herein, the term “FTP wires” refers to the wires of at least one twisted pair of insulated or un-insulated wires in an FTP cable. As used herein, the term “FTP cable” refers to a cable that contains at least one twisted pair of insulated or un-insulated wires, a drain wire, a metal foil or sheath surrounding the twisted pair(s) and drain wire, and an insulating jacket surrounding the twisted pair(s) and the metal foil or sheath.
With reference to
Turning to
Cylindrical contact 1 may be shaped and designed so as to allow deflection or bias, thereby being capable of engaging an FTP cable/wires, drain wire and metal foil or sheath. Such deflection may be achieved by the deflection of deflectable fingers or latching members engaging cylindrical contact 1. For example, cylindrical contact 1 may be deflectable by an inner diameter feature of a cam nut which interacts with deflectable fingers or latching members engaging cylindrical contact 1.
One such disclosed exemplary sub-component which may be capable of holding, connecting to, or otherwise being joined to an exemplary cylindrical contact is exemplary first sub-assembly housing 8. The exemplary embodiment of first sub-assembly housing 8 may include a cylindrical member 9 extending from a first face. Cylindrical member 9 may include fingers or deflectable latching members 10. The fingers or deflectable latching members 10 of an exemplary cylindrical member may correspond to the surface and/or edge profile of an exemplary cylindrical contact and thereby allow the cylindrical member and cylindrical contact to be coupled. Exemplary fingers or deflectable latching members 10 may also be flexible and may therefore transfer “opening” or “closing” forces to an exemplary cylindrical contact engaged thereto. Stated differently, deflection of exemplary fingers or deflectable latching members 10 may bias cylindrical contact 1 and, as a result, cylindrical contact 1 may interfere or contact a drain wire, metal foil sheath, an FTP cable/wires or combinations thereof. Further, exemplary first sub-assembly housing 8 and fingers or deflectable latching members 10 may be shaped and/or designed to allow deflection of fingers or deflectable latching members 10 (resulting in deflection of cylindrical contact 1) through interaction of a sub-component and/or sub-assembly. For example, exemplary first sub-assembly housing 8 and/or fingers or deflectable latching members 10 may be shaped and designed to allow deflection of deflectable latching members 10 and/or contact 1 by the interaction of a cam nut thereto.
Cylindrical member 9 may define an opening though exemplary first sub-assembly housing 8. Such opening may facilitate an FTP cable or FTP wires to pass through first sub-assembly housing 8. Cylindrical member 9 may also define a latching slot 13. Latching slot 13 may be engaged by another component, such as a deflectable latching member to facilitate a secure connection between the first sub-assembly housing and another component. Exemplary first sub-assembly housing 8 may also include at least one deflectable latching member 14. Such deflectable latching member 14 can engage latching slots formed in another cooperative connector assembly component. Additional latching structures (not shown) may be provided on exemplary first sub-assembly housing 8, e.g., along the bottom or top surfaces thereof, to further facilitate a secure connection to another component. Exemplary first sub-assembly housing 8 may also include at least one latching slot 11. Such latching slot 11 may be engaged by another component, such as a deflectable latching member. Additional latching slots (not shown) may be provided on exemplary first sub-assembly housing 8, e.g., along the bottom or top surfaces thereof, to further facilitate a secure connection to another component. As shown in
An exemplary cylindrical member extending from a first face of an exemplary first sub-assembly housing may also be designed to allow for a cam nut to be positioned thereon. As shown in
As shown in
The present disclosure also provides an exemplary jack housing 29. As shown in
As shown in
A contact insert 28 may extend into the rear opening formed in exemplary jack housing 29 and defines, in part, a boundary of the jack opening formed in second exemplary jack housing 29. A printed circuit board (PCB) 25 may also be positioned into the rear opening formed in exemplary jack housing 29 and abut contact insert 28. Exemplary PCB 25 may include conventional electronic elements/components, e.g., traces printed or etched on a non-conductive substrate that facilitate electrical connection across the connector assembly. Exemplary PCB 25 may also include conventional plug connections elements 27. Such conventional plug connection elements 27 may be designed to electrically cooperate with and engage a plug inserted into plug/jack opening 104 and may continue such electrical connection to exemplary PCB 25.
The electrical connection and signal carried from an inserted plug may terminate on exemplary PCB 25 with terminals 26. Exemplary terminals 26 may be made from electrically conductive material and designed to accept connection of FTP wires. Exemplary terminals 26 may be “U” or “V” shaped to thereby allow an FTP wire to be pressed into each exemplary terminal and be securely joined or held by the exemplary terminal. In another exemplary design, exemplary terminals 26 may include a channel and opening, wherein the channel is less wide than the diameter of an FTP wire but the opening is slightly wider than the channel.
Exemplary PCB 25 and its components may be secured or coupled to exemplary jack housing 29 by another component which abuts the surface of PCB 25 and is coupled to exemplary jack housing 29. As an example shown in
Exemplary second sub-assembly housing 20 is another exemplary connector assembly sub-component. As discussed above, exemplary second sub-assembly housing 20 may securely hold contact insert 28 and PCB 25 (including plug connection elements 27 and, at least in part, terminals 26) to the jack housing 29 by latching members 24. In one exemplary embodiment, exemplary second sub-assembly housing 20 may include at least one cam member 21. Cam member(s) 21 is/are element(s) that extend from a face of second sub-assembly housing 20. The exemplary cam member(s) 21 extend from a face opposite the side of second sub-assembly housing 20 that faces exemplary jack housing 29. As such, cam member(s) 21 extend away from exemplary jack housing 29. Cam member(s) 21 may be sized, shaped and dimensioned so that they may pass through several other sub-components. Cam member(s) 21 may also include a cam slot 22 which encompasses a slot located near the end of cam member(s) 21. Cam slot 22 may be a straight, curved or angled slot. In one exemplary embodiment, the cam slot(s) 22 extends generally perpendicular across the surface of the cam member 21 that faces the aperture defined thereby, in respect to the direction in which the cam member 21 extends from the face of the exemplary second sub-assembly housing 20.
In order for a cam member 21 of second sub-assembly housing 20 to extend or pass through another sub-component, the other sub-component may define a hole/aperture therein which mimics or resembles the shape of cam member 21. For example, as shown in
As discussed above, exemplary cam nut 3 may include exemplary cam threads 4 formed on the outside surface around at least a portion of exemplary cam nut 3. Each exemplary cam thread 4 may define a ridge extending from the surface of exemplary cam nut 3 and may be oriented on an angle or curve—similar to the threads of a common screw. Exemplary cam nut 3 may also include one or more cam stop members 7 which extend from the outer surface of exemplary cam nut 3 and define the borders or ends of cam threads 4. The one or more cam stop members 7 may be positioned farthest from the face of first sub-assembly housing 8 when positioned on cylindrical member 9 of first sub-assembly housing 8. When exemplary cam nut 3 is positioned on cylindrical member 9 and cam threads 4 engage cam slots 22, cam nut 3 may be rotated and, because of the angle of cam threads 4, torque will be created and cam nut 3 will pull together and secure second sub-assembly housing 20, routing cap 15 and first sub-assembly housing 8. Also, because jack housing 29, contact insert 28 and PCB 25 may be connected to second sub-assembly housing 20, the rotation of cam nut 3 may secure these sub-components to routing cap 15, first sub-assembly housing 8 and cylindrical contact 1—thereby forming a fully constructed connector assembly. Cam stop members 7 may prevent cam nut 3 from over-rotating cam threads 4.
As exemplary cam nut 3 is rotated, cam nut 3 may be translated towards, and finally come in contact with, the surface of first sub-assembly housing 8. As cam nut 3 shifts positions on cylindrical member 9, cam nut 3 may deflect or compress fingers or deflectable latching members 10 and, thereby, compress or deflect cylindrical contact 1. The deflection of fingers or deflectable latching members 10 may result from the shape and/or design of exemplary fingers or deflectable latching members 10, first sub-assembly housing 8, cylindrical member 9, the inner diameter of cam nut 3 or a combination thereof. In such an embodiment, an FTP cable may have previously been fed through cylindrical contact 1, first sub-assembly housing 8 and into routing cap 15. Also, FTP wires from the FTP cable may have been engaged through the routing channels 101 and into terminals 26. In addition, the drain wire and metal foil or sheath may have been re-directed back through cylindrical contact 1—passing over the FTP cable and through contact 1 by means of the collar 2. As such, rotation of cam nut 3 may jointly (1) engage connector sub-components, and (2) compress cylindrical contact 1, possibly onto an FTP cable, drain wire or metal foil or sheath. In such an embodiment, cylindrical contact 1 may provide continuity and shielding of the FTP wires to the connector assembly entrance. Stated differently, rotation of cam nut 3 may simultaneously result in (1) secure assembly of jack sub-components and/or sub-assemblies, and (2) interference or contact between a contact and a FTP cable, FTP wires, drain wire or shielding.
As may be recognized by those of ordinary skill in the pertinent art based on the teachings herein, the contact which is biased into the FTP cable, drain wire or shielding may take any of numerous different shapes or configurations that are currently known, or that later become known. For example, rather than a cylindrical contact, a lever type contact may be coupled to the connector assembly and biased or urged into contact with the FTP cable, drain wire or shielding by rotation and/or translation of the cam nut. The lever type contact may, for example, be an elongate, substantially linear contact with a curvilinear profile or an elongate “L” shaped contact. As another example, rather than the contact being coupled to the jack on deflectable members extending from a face of a component of the connector assembly, at least one end of a contact, such as one of the two alternative contact embodiments discussed above, may be coupled to another portion of the connector assembly component which may or may not be deflectable or biased by rotation or translation of the cam nut. In such an exemplary embodiment, the contact itself may be deflectable and/or shaped, dimensioned or positioned such that rotation or translation of the cam nut biases the contact into the FTP cable, drain wire or shielding. For example, an elongate, non-cylindrical deflectable contact may define at least one end coupled to the connector assembly component and a free end distally spaced relative to the component which is biased into contact with the FTP cable, drain wire or shielding by rotation or translation of the cam nut.
As discussed above, several of the disclosed connector sub-components can by coupled or joined to one another, such as through the use deflectable latching members and corresponding latching slots.
As discussed above and as shown in
Another exemplary embodiment according to the present disclosure is provided in
As shown in
As noted above, a difference between the exemplary jack assembly 200 as compared to the jack assembly shown in
It is noted that the cam nut 203 may or may not secure the second sub-assembly housing 208 to other components, such as the routing cap 215. For example, the cam nut 203 may be larger, given a certain dimension and angular position, as compared to the corresponding aperture formed by the second sub-assembly housing 208, and thus the cam nut 203 may prevent the second sub-assembly housing 208 from movement away from the routing cap 215 (when the cam nut 203 is engaged with the cam members 221). However, the cam nut 203 may be smaller, given a certain angular position, than the corresponding aperture formed by the second sub-assembly housing 208, and thus the second sub-assembly housing 208 may not be prevented by the cam nut 203 from being removed from, or placed over, cam nut 203 when cam nut 203 is secured to the routing cap 215 via the at least one cam thread 204 and at least one cam slot 222.
It is further noted that, as described above, the sub-components of exemplary jack assembly 200 may be coupled to one another to form sub-assemblies that may be assembled to form a finished or complete jack assembly. For example, the first sub-assembly housing 220 includes or defines tabs 310 which may mate with tabs or slots included in the jack assembly 229, such as tabs 231. As such, the jack assembly 229, contact insert 228, PCB 225, first sub-assembly housing 220 and combinations thereof may form a first connector sub-assembly. Similarly, the second sub-assembly housing 208 may include tabs or deflectable members 202, as well as gaps or slots 320, which may mate with, for example, taps or slots 312 of the routing cap 215. As such, the routing cap 215, contact 201, cam nut 203, second sub-assembly housing 208 and combinations thereof may form a second connector sub-assembly. Further, said first connector sub-assembly and second connector sub-assembly may be coupled to one another though the interaction of the cam nut 203 (and the cam threads 204 thereon) and the cam members 221 (and the cam slots 222 thereon).
Another difference between the exemplary jack assembly 200 as compared to the exemplary jack assembly shown in
As also shown best by
As seen best in
The embodiments described above are only exemplary embodiments and it may be readily understood by those having skill in the pertinent art from the present disclosure that any of numerous changes and modifications may be made to the above-described and other embodiments of the present invention without departing from the scope of the invention as defined in the appended claims. Although the present disclosure discloses and describes exemplary connector assembly embodiments and associated assembly techniques, it is to be understood that the present disclosure is neither limited by or to such exemplary embodiments. Rather, the disclosed connector assembly embodiments and associated assembly techniques are merely illustrative. As such, various modifications, variations and/or enhancements to the disclosed connector assembly embodiments/techniques may be made without departing from the spirit or scope of the present disclosure.
For example, the components of the jack assembly may not utilize deflectable tabs and slots to couple to one another, but may be coupled by other means, such as screws, glues, gravity or simply press-fit. Similarly, the components of the jack assembly may not be coupled to one another besides by the cam member and cam nut. As another example, any of the components may include or define one or more (i.e., at least one) cam member and cam slot, such as the jack housing, first sub-assembly housing, routing cap, second sub-assembly housing or any other component included in the jack assembly. Similarly, any of the components may include one or more (i.e., at least one) cam openings that allow the cam member(s) to pass therethrough and, therefore, couple that component to any other components through the use of a cam nut and the cam member, such as the jack housing, first sub-assembly housing, routing cap, second sub-assembly housing or any other component included in the jack assembly. As another example, components may be removed, added or a combination thereof without departing from the scope of the invention. Similarly, the arrangement and/or order of components may be modified or otherwise altered, such as an arrangement wherein the contact or cam nut is located at least between the jack housing and the first sub-assembly housing, the first sub-assembly housing and the routing cap, the routing cap and the second sub-assembly housing, or located on the outside surface of the jack housing or on the outside surface of the second sub-assembly housing. As another example, the contact need not be deflectable, but instead or in addition to being deflectable may be moveable or otherwise capable of a first position wherein the contact in not in interference with an FTP cable/wire and a second position in which the contact is capable of interfering with an FTP cable/wire.
The present application is a continuation-in-part application that claims priority benefit to a co-pending, commonly assigned U.S. non-provisional application entitled “Connector Assemblies, Combinations and Methods for Use with Foil-Shielded Twisted Pair Cables” which was filed on Jan. 16, 2009, and assigned Ser. No. 12/321,240. The entire contents of the foregoing non-provisional application are incorporated herein by reference.
Number | Name | Date | Kind |
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6817902 | Bernardi et al. | Nov 2004 | B2 |
6935886 | Hoch et al. | Aug 2005 | B2 |
6948971 | Bartholoma et al. | Sep 2005 | B2 |
7214094 | Kaminski et al. | May 2007 | B2 |
20050277335 | Gordon et al. | Dec 2005 | A1 |
Number | Date | Country |
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2008081087 | Jul 2008 | WO |
Number | Date | Country | |
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Parent | 12321240 | Jan 2009 | US |
Child | 12471061 | US |