EP2624377A1 - Kommunikationsadapter mit asymmetrischen äußeren Kontaktfedern oder äußeren Kontaktfedern, sich sich unter der Oberfläche einer gedruckten Leiterplatte befinden - Google Patents

Kommunikationsadapter mit asymmetrischen äußeren Kontaktfedern oder äußeren Kontaktfedern, sich sich unter der Oberfläche einer gedruckten Leiterplatte befinden Download PDF

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Publication number
EP2624377A1
EP2624377A1 EP13152508.1A EP13152508A EP2624377A1 EP 2624377 A1 EP2624377 A1 EP 2624377A1 EP 13152508 A EP13152508 A EP 13152508A EP 2624377 A1 EP2624377 A1 EP 2624377A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
printed circuit
contact
adapter
contact spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13152508.1A
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English (en)
French (fr)
Other versions
EP2624377B1 (de
Inventor
Michael Wimmer
Allen Michael Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Research and Development Corp
Original Assignee
Corning Optical Communications LLC
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Filing date
Publication date
Application filed by Corning Optical Communications LLC filed Critical Corning Optical Communications LLC
Publication of EP2624377A1 publication Critical patent/EP2624377A1/de
Application granted granted Critical
Publication of EP2624377B1 publication Critical patent/EP2624377B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H01R24/62—Sliding engagements with one side only, e.g. modular jack coupling devices
    • H01R24/64—Sliding engagements with one side only, e.g. modular jack coupling devices for high frequency, e.g. RJ 45
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/04—Connectors or connections adapted for particular applications for network, e.g. LAN connectors

Definitions

  • the invention relates to a modular communications adapter for receiving an electrical communications plug-type connector as defined in the preamble of claim 1 or claim 12.
  • the invention deals with electrical contact arrangement for telecommunication and data processing technology, has high-frequency electrical contacts electrically and mechanically connected with printed circuit board, where electrical contacts include contact area.
  • the connection for high frequency data transmission refers to the RJ45 specification (IEC 60603-7).
  • the RJ45 specification describes the faces of the RJ45 communications plug and the RJ45 communications adapter.
  • the RJ45 specification requires eight (8) contact pins for data transmission.
  • the RJ45 communications plug has eight (8) relatively stiff contacts separated by separators and the RJ45 communications adapter has eight (8) relatively flexible contact springs to connect with the relatively stiff contacts of the RJ45 communications plug.
  • the aim is to use short contact springs within the RJ45 communications adapter for a good high frequency data transmission. On the other hand this contact spring needs a mechanical flexibility.
  • the RJ45 communications adapter is also compatible to a RJ11 communications plug having only six (6) contacts.
  • the insertion of a RJ11 communications plug into a RJ45 communications adapter causes more movement of the outer contact springs of the RJ45 communications adapter, because they do not encounter a contact of the RJ11 communications plug and are pressed down much more by the separators of the RJ11 communications plug. For this reason the outer contact springs have to be more flexible than the others. If the outer contact springs of a RJ45 communications adapter would not have a higher appropriate flexibility, the insertion of a RJ11 communications plug would destroy them. No safe connection could be realized. This case has to be avoided.
  • a modular communications adapter as defined in the preamble of claim 1 or claim 13 is disclosed in the prior art document US 6,530,810 B2 .
  • the present invention is based on the object of providing a novel modular communications adapter.
  • the object of the invention is according to a first aspect of the invention achieved by a communications adapter according to claim 1.
  • the outer contact springs are asymmetrical along the spring central axis of the same, while the inner contact springs are symmetrical along the spring central axis of the same. This provides an appropriate flexibility for the outer contact springs in order to avoid that the outer contact springs become damaged in case a communications plug becomes inserted into the communications adapter which is not of the same type. Especially, outer contact springs of a RJ45 communications adapter will not damaged when inserting a RJ11 communications plug into the same.
  • each inner contact spring has a first length and each outer contact spring has a second length longer than the first length, wherein the first length and the second length being measured along the respective contact spring from an intersection of the respective fixed end of the respective contact spring and a surface of the printed circuit board to the respective contact end of the respective contact spring.
  • each inner contact spring includes at least two bends, wherein each outer contact spring includes at least one more bend than the inner contact springs. This provides a further improved flexibility for the outer contact springs.
  • each outer contact spring is wider at the fixed end than at the contact end for providing a larger elastic bending range than the inner contact springs.
  • each outer contact spring has multiple widths along the length of the spring, the multiple widths including a first width at the fixed end that tapers to a second width smaller than the first width, the second width tapering to a third width that is larger than the second width but smaller than the first width, the third width tapering to the final width that is smaller than the first, second and third widths. This provides a further improved flexibility for the outer contact springs.
  • the printed circuit board includes a top surface and a bottom surface, wherein each outer contact spring extends below the top surface in one respective location.
  • the longer, asymmetrical outer springs have a space in the printed circuit board where they can move into.
  • the object of the invention is according to a second aspect of the invention achieved by a communications adapter according to claim 12.
  • the printed circuit board includes a top surface and a bottom surface, wherein each second contact spring extends below the top surface in one respective location at least in a mated condition of the same.
  • the outer springs have a space in the printed circuit board where they can move into.
  • each second contact spring extends below the top surface in one respective location in a mated condition and in an unmated condition of the same.
  • each location includes at least one conductive aperture for receiving the fixed end of the respective second contact spring and at least one cut-out for receiving at least one of the bends of the respective second contact spring.
  • the novel communications adapter was developed for the Next Generation of applicants existing Product S500 being a RJ45 communications adapter.
  • a main part of that communications adapter is the contact spring.
  • a new design of the contact spring is provided. Eight (8) contact springs mounted on a printed circuit board with a first end of the contact spring, with a second free end of the contact spring is directed away from the mounting location, the second end not contacting the printed circuit board.
  • the first aspect deals with the mechanical flexibility of the outer springs.
  • the outer contact springs have to be more bendable than the inner contact springs.
  • the inner contact springs have the worst crosstalk behavior and need a minimum length.
  • the printed circuit board includes locations proving space in the printed circuit board for the second contact springs, wherein each second contact spring extends in one said locations at least in a mated condition of the same.
  • the more flexible outer contact springs have a space in the printed circuit board where they can move into when a communications plug becomes inserted into the communications adapter.
  • Figure 1 shows an exploded view of an exemplary embodiment of a modular communications adapter according to the present invention
  • Figure 2 shows a perspective view of a printed circuit board (PCB) having an array of contact springs
  • FIG 3 shows a side view of the printed circuit board (PCB) of Figure 2 further having an array of insulation displacement connector (IDC) contacts;
  • PCB printed circuit board
  • IDC insulation displacement connector
  • Figure 4 shows a front view of the printed circuit board of Figure 2 ;
  • Figures 5-7 show top views of different embodiments of printed circuit boards (PCB), wherein the PCBs of Figures 5-7 each have an array of contact springs, and whereby the PCB of Figures 6 further has an array IDC contacts;
  • PCB printed circuit boards
  • Figure 8 shows a perspective assembly view of an RJ45 communications plug ready to insert into an embodiment of a RJ45 communications adapter
  • FIGS 9,10 show perspective views of RJ45 and RJ11 communications plugs, for comparison
  • Figures 11, 12 show front views of the communications plugs of Figures 9 and 10 ;
  • Figures 13, 14 show front views of flat stampings of outer contact springs for the communications adapter
  • Figure 15 shows a side view of a full, uninstalled outer contact spring for the communications adapter
  • Figure 16 shows a partial perspective view of the contact spring of Figure 15 showing relative measurements along the length of the contact spring
  • Figure 17 shows a top view of the contact spring of Figure 15 ;
  • Figure 18 shows a side view of full, uninstalled inner contact spring for the communications adapter
  • Figure 19 shows a front view of the contact springs of Figure 18 ;
  • Figure 20 shows a top view of the contact spring of Figure 18 ;
  • Figure 21 shows a partial perspective view of the contact spring of Figure 18 showing relative measurements along the length of the spring
  • Figures 22-24 show perspective views of the different contact springs.
  • RJ11 communications plug can be plugged into a RJ45 communications adapter without damaging the RJ45 communications adapter.
  • the communications adapter is compatible with a RJ11 communications plug and a RJ45 communications plug. There is no additional part like e.g. a stopper needed.
  • Outer contact springs of the communications adapter have more mechanical flexibility than inner contact springs of the communications adapter.
  • the inner contact springs of the communications adapter are in contrast designed to allow high frequency data transmission of the communications adapter with less crosstalk.
  • the necessary space for the contact springs of a communications adapter can be reduced. Due to this the dimension of the communications adapter becomes smaller.
  • the manufacturing process is to assemble all spring contacts in one line at the same time. That reduces the assembly-effort and saves money.
  • a modular communications adapter 10 consists of a housing 11 and a support part 12.
  • the support part 12 includes an insulation body 13 that carries a printed circuit board (PCB) 14 with a plurality of contact springs 15, 16 and a plurality of insulation displacement connector (IDC) contacts 17.
  • PCB printed circuit board
  • IDC insulation displacement connector
  • All contact springs 15, 16 of the communications adapter 10 stand side-by-side along one line.
  • the IDC contacts 17 stand side-by-side along two parallel lines.
  • the parallel lines in which the IDC contacts 17 stand run perpendicular to the line in which the contact springs 15, 16 are positioned.
  • the insulation body 13 of the support part 12 comprises in the shown embodiment three elements, namely an upper holding element 18, a lower holding element 19 and a compression element 20.
  • the three elements of the insulation body 13 are made from an electrically insulating material like plastics.
  • the support part 12 further includes a shielding body 21.
  • the shielding body 21 is made from an electrically conducting material like metal.
  • Each contact spring 15, 16 is fixed with one end 22 in the PCB 14. This end 22 is also called fixed end 22.
  • the other, opposite end 24 of the respective contact spring 15, 16 is free to connect stiff contacts 23a of a communications plug-type connector 23.
  • the free end 24 is also called contact end 24.
  • the fixed ends 22 of the contact springs 15, 16 define a linear array of fixed ends 22.
  • the housing 11 of the communications adapter 10 comprises an opening 25 for receiving an electrical communications plug-type connector 23.
  • the opening 25 of the housing 11 can be covered by a dust cap 26.
  • the printed circuit board (PCB) 14 includes electrical traces for providing a plurality of electrical paths extending between a first end 38 of the printed circuit board 14 and a second end 39 of the printed circuit board 14.
  • the fixed ends 22 of the contact springs 15, 16 are fixed to the first end 38 of the printed circuit board 14.
  • the insulation displacement connector (IDC) contacts 17 are fixed to the second end 39 of the printed circuit board 14.
  • the electrical traces of the PCB 14 provide electrical conductive paths between the contact springs 15, 16 and the IDC contacts 17.
  • RJ45 communications plug-type connector 23 In case of a RJ45 communications plug-type connector 23, the same comprises eight (8) stiff contacts 23a (see Figures 8, 9, 11 ) hold by an insulation body 23b.
  • the RJ45 communications adapter 10 for such a RJ45 communications plug-type connector 23 comprises eight (8) contact springs 15, 16, namely six (6) first, inner contact springs 15 and two (2) second, outer contact springs 16.
  • the stiff contacts 23a contact the contact springs 15, 16.
  • the first, inner contact springs 15 of the communications adapter are symmetrical along a first spring central axis X1 (see Figure 19 ), wherein the second, outer contact springs 16 of the communications adapter are asymmetrical along a second spring central axis X2 (see Figures 13 and 14).
  • Figures 13, 14 show front views of flat stampings of outer contact springs 16.
  • the second, outer contact springs 16 are asymmetrical along the second spring central axis X2 in such a way that the second, outer contact springs 16 are symmetrical in the region of the contact ends 24 of the same and asymmetrical in the region of the fixed ends 22 of the same.
  • the second, outer contact springs 16 comprise in sections which provide the fixed ends 22 of the outer contact springs 16 the thickness d2 at a first side and the thickness d1 at a second side, wherein the thickness d2 is lager than the thickness d1
  • the first side with the larger thickness d2 of the outer contact spring 16 is facing away from a respective neighboring inner contact spring 15.
  • the second side with the smaller thickness d1 of the outer contact spring 16 is facing towards the respective neighboring inner contact spring 15.
  • the asymmetric design of the second, outer contact springs 16 provides an appropriate flexibility for the outer contact springs 16 in order to avoid that the outer contact springs 16 become damaged in case a communications plug becomes inserted into the communications adapter 10 which is not of the same type.
  • outer contact springs 16 of a RJ45 communications adapter 10 will not damaged when inserting a RJ11 communications plug 23' into the same.
  • the second, outer contact springs 16 are asymmetrical along the respective spring central axis X2.
  • Figures 13 and 22 shows an outer left contact spring 16 and
  • Figures 14 and 24 shows an outer right contact spring 16.
  • Both outer contact springs 16 are asymmetrical along a respective spring central axis X2.
  • the outer right contact spring 16 of Figure 24 is a mirror image of the outer left contact spring 16 of Figure 22 along the respective central axes X2. Both outer contact springs 16 have about the same length.
  • Figures 13 and 14 show front views of flat stampings of these two outer contact springs 16.
  • the first, inner contact springs have a first length and the second, outer contact springs 16 have a second length longer than the first length. This provides a further improved flexibility for the outer contact springs 16.
  • the first length and the second length is measured along the contact springs 15, 16 from an intersection of the respective fixed ends 22 and an upper or top surface 27 of the printed circuit board 14 to the respective contact ends 23.
  • the second length may be up to 100% longer than the first length.
  • the second length may be from 10% to 40% longer than the first length.
  • the second length is from 20% to 30% longer than the first length.
  • the second length may be from 25% to 30% longer than the first length.
  • Each first, inner contact spring 15 includes at least two bends 28, 29 (see Figures 18 , 21, 23 ).
  • Each second, outer contact spring 16 includes at least one more bend 30, 31, 32 (see Figures 15, 16 , 22, 24 ) than the first, inner contact springs 15. This provides a further improved flexibility for the outer contact springs 16.
  • the contact ends 24 of the contact springs 15, 16 define a contact zone for making electrical contact with the electrical plug-type connector 23.
  • the contact zone may include at least one bend 28, 30 on the contact springs 15, 16.
  • the printed circuit board 14 includes the upper or top surface 27 and on the opposite side a lower or bottom surface 33.
  • each second, outer contact spring 16 extends below the top surface 27 in one respective location 34 at least in a mated condition of the respective outer contact springs 16.
  • the second, outer contact springs 16 may extend below the top surface 27 of the PCB 14 in the locations 34 in the mated condition and in an unmated condition.
  • Each of said locations 34 includes one conductive aperture 35 for receiving the fixed end 22of the respective second, outer contact spring 16 and at least one cut-out 36 for receiving at least one of the bends 32 of the respective second, outer contact spring 16.
  • the cut-outs 36 are provided by notches on the printed circuit board 14 (see Figures 2 , 5 ). Each notch extends from the top surface 27 of the printed circuit board 14 to the bottom surface 33 of the printed circuit board 14, and from an edge 37 of the printed circuit board 14 between the top surface 27 of the printed circuit board 14 and bottom surface 33 of the printed circuit board 14.
  • the cut-outs 36 are provided by through holes (see Figure 6 ) extending from the top surface 27 to the bottom surface 33 of the printed circuit board 14.
  • the cut-outs 36 are provided by a cavity (see Figure 7 ) extending from the top surface 27 for a distance in the direction of the bottom surface 33 but not extending through the bottom surface 33 of the printed circuit board 14.
  • the communications adapter 10 is preferably designed to receive an electrical communications RJ-type connector, especially to receive a RJ 45 communications connector.
  • the plurality of contact springs 15, 16 include an electrically conductive material.
  • the electrically conductive material may be one of the group selected from copper, nickel, brass, iron, steel, stainless steel, bronze, gold, platinum, silver, and combinations of the same.
  • the communications adapter 10 may have at least one wire management element for managing the wires of the cable.
  • the plurality of contact springs 15, 16 include the first, inner contact springs 15 being symmetrical along the first spring central axis X1, and the second, outer contact springs 16 being asymmetrical along a second spring central axis X2, wherein the first contact springs 15 may have a first length and the second contact springs 16 may have a second length longer than the first length.
  • Each of the first and second contact springs 15, 16 provides a mating contact force of at least one (1) Newton in a mated condition.
  • each second, outer contact spring 16 is wider at the fixed end 22 than at the contact end 24 for providing a larger elastic bending range than the first, inner contact springs 15.
  • Each second, outer contact spring 16 may have a first width W 0 at the fixed end 22 and a final width W 6 at the contact end 24.
  • each second, outer contact spring 16 has multiple widths along the length of the same, the multiple widths preferably include a first width W 0 at the fixed end 22 that tapers to at least one second width W 1 , W 2 , W 3 being smaller than the first width W 0 .
  • the first width W 0 tapers successively to three different second widths W 1 , W 2 , W 3 , wherein all of said second widths W 1 , W 2 , W 3 are associated with a first bend 32 of the respective second contact spring 16 having a first radius R 1 and a first bend angle ⁇ 1 .
  • the widths W 1 , W 2 are associated to a first side of the first bend 32 and the width W 3 is associated to a second side of the first bend 32.
  • the widths W 1 is lager than the width widths W 2 and the widths W 2 is lager than the width widths W 3 .
  • the widths W 1 and W 2 and/or the widths W 2 and W 3 may be the same.
  • the or each second width W 1 , W 2 , W 3 taperes to at least one third width W 4 , W 5 that is larger than the or each second width W 1 , W 2 , W 3 but smaller than the first width W 0 .
  • the or each second width W 1 , W 2 , W 3 tapers successively to two different third widths W 4 , W 5 , wherein all of said third widths W 4 , W 5 are associated with a second bend 31 of the respective second contact spring 16 having a second radius R 2 and a second bend angle ⁇ 2 .
  • the widths W 4 is associated to a first side of the second bend 31 and the width W 5 is associated to a second side of the second bend 31.
  • the width W 4 is lager than the width widths W 5 .
  • the widths W 4 and W 5 may be the same.
  • the or each third width W 4 , W 5 tapers to the final width W6 that is smaller than the first, second and third widths W 1 , W 2 , W 3 , W 4 , W 5 .
  • the final width W6 is associated with a third bend 30 of the respective second contact spring 16 having a third radius R 3 and a third bend angle ⁇ 3 .
  • the first radius R 1 and the second radius R 2 are preferably the same.
  • the first bend angle ⁇ 1 is preferably smaller than the second bend angle ⁇ 2 .
  • the first bend 32 may have an included bend angle ⁇ 1 of about 20-30 degrees in an unmated condition and the second bend 32 may have an included bend angle ⁇ 2 of about 35-45 degrees in an unmated condition.
  • the first bend angle ⁇ 1 may be about 23 degrees in the unmated condition and the second bend angle ⁇ 2 may be about 40 degrees in the unmated condition.
  • Each second, outer contact spring 16 comprises a first straight tapering section having length L 1 +L 2 , a second straight tapering section having length L 3 , and a third straight tapering section having length L 4 .
  • the length L 1 +L 2 is smaller than the length L 3 and the length L 3 is smaller than the length L 4 .
  • Each first, inner contact spring 15 may have a first width W 1-2 at the fixed end 22 and a final width W 5-2 at the contact end 24.
  • each first, inner contact spring 15 has multiple widths along the length of the same, the multiple widths preferably include a first width W 1-2 at the fixed end 22 that tapers to at least one second width W 2-2 , W 3-2 being smaller than the first width W 1-2 .
  • the first width W 1-2 tapers successively to two different second widths W 2-2 , W 3-2 wherein all of said second widths W 2-2 , W 3-2 are associated with a first bend 29 of the respective first contact spring 15 having a first bend angle ⁇ 1-2 .
  • the widths W 2-2 is associated to a first side of the first bend 29 and the width W 3-2 is associated to a second side of the first bend 29.
  • the widths W 2-2 is lager than the width widths W 3-2 .
  • the widths W 2-2 and W 3-2 may be the same.
  • the or each second width W 2-2 , W 3-2 taperes to at least one third width W 4-2 , W 5-2 that is smaller than the or each second width W 2-2 , W 3-2 .
  • the or each second width W 2-2 , W 3-2 tapers successively to two different third widths W 4-2 , W 5-2 , wherein all of said third widths W 4-2 , W 5-2 are associated with a second bend 28 of the respective first contact spring 15 having a second bend angle ⁇ 2-2 .
  • the widths W 4-2 is associated to a first side of the second bend 28 and the width W 5-2 is associated to a second side of the second bend 28.
  • the width W 4-2 is lager than the width widths W 5-2 .
  • the widths W 4-2 and W 5-2 may be the same.
  • the widths W 5-2 is the final width W 5-2 at the contact end 24 of the respective first contact spring 15.

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  • Coupling Device And Connection With Printed Circuit (AREA)
EP20130152508 2012-01-31 2013-01-24 Kommunikationsadapter Not-in-force EP2624377B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201261592993P 2012-01-31 2012-01-31

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EP2624377A1 true EP2624377A1 (de) 2013-08-07
EP2624377B1 EP2624377B1 (de) 2015-01-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240395A1 (en) * 2022-06-13 2023-12-21 Honeywell International Inc. A mountable wiring adapter for extending continuity of a communication bus while providing wiring terminals to access the communication bus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202024103316U1 (de) 2024-06-19 2024-07-18 Corning Research & Development Corporation Datenbuchse und Verteilerfeld mit Datenbuchsen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952640A1 (de) * 1998-03-25 1999-10-27 Lucent Technologies Inc. Nebensprechkompensation für elektrischer Steckverbinder
WO2001052364A1 (en) * 2000-01-14 2001-07-19 Panduit Corp. Low crosstalk modular communication connector
US6530810B2 (en) 2000-09-19 2003-03-11 Avaya Technology Corp. High performance communication connector construction
WO2009100296A1 (en) * 2008-02-08 2009-08-13 Panduit Corp. Communications connector with improved contacts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952640A1 (de) * 1998-03-25 1999-10-27 Lucent Technologies Inc. Nebensprechkompensation für elektrischer Steckverbinder
WO2001052364A1 (en) * 2000-01-14 2001-07-19 Panduit Corp. Low crosstalk modular communication connector
US6530810B2 (en) 2000-09-19 2003-03-11 Avaya Technology Corp. High performance communication connector construction
WO2009100296A1 (en) * 2008-02-08 2009-08-13 Panduit Corp. Communications connector with improved contacts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023240395A1 (en) * 2022-06-13 2023-12-21 Honeywell International Inc. A mountable wiring adapter for extending continuity of a communication bus while providing wiring terminals to access the communication bus

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