EP0700128A1 - Modular receptacle - Google Patents
Modular receptacle Download PDFInfo
- Publication number
- EP0700128A1 EP0700128A1 EP95306096A EP95306096A EP0700128A1 EP 0700128 A1 EP0700128 A1 EP 0700128A1 EP 95306096 A EP95306096 A EP 95306096A EP 95306096 A EP95306096 A EP 95306096A EP 0700128 A1 EP0700128 A1 EP 0700128A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- modular
- plug
- bracket
- housing
- modular jack
- 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
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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
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
- H01R12/716—Coupling device provided on the PCB
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
-
- 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
Definitions
- This invention relates to modular electrical connectors and, in particular, receptacle connectors, commonly known as modular jacks and a method of making said jack. This invention is especially applicable to bottom entry modular jacks.
- Modular jacks are electrical connectors that are widely used in the industry for such purposes as telephone networks and input/output interfaces of other communication peripherals. Modular jacks interconnect with a mating modular plug in a simple linear insertion motion. The dimensions of these jacks and plugs have been standardized and are widely known throughout the industry.
- One particular style of modular jacks is known as a "bottom entry" wherein the receptacle is positioned on a first side of a substrate and extends in an open manner therethrough such that the modular plug may be inserted from an opposite, second side of the substrate.
- the contact elements within the modular jack are typically surface mount soldered to circuit traces on the first side of the substrate. It is known to include an additional solder bracket that is attachable to the substrate to prevent the forces associated with insertion or removal of the modular plug or external forces that are exerted on the modular plug by way of the cable attached thereto from adversely affecting the integrity of the electrical interconnection with the contacts.
- the contacts are typically complicated structures that extend along the outside of the jack before entering the housing for engagement with the modular plug. Additionally, the solder bracket is normally inserted into the modular jack housing as part of a separate assembly operation.
- a modular jack according to the present invention is shown generally at 2.
- This modular jack 2 is of the "bottom entry” variety; however, this invention is applicable to other connector configurations.
- the modular jack 2 is mounted upon a substrate 4, such as a printed circuit board.
- the substrate 4 includes an opening 6 therethrough.
- the opening 6 spans first and second sides 8,10 respectively.
- solder traces 12 Disposed along the first side 8 are solder traces 12 for electrical interconnection with the modular jack receptacle 2 and a solder pad 13 for mechanically fixing the modular jack 2 thereto.
- the modular jack 2 includes a base assembly 14 and a cap 16 that together define a plug receiving region 18 accessible by a modular plug (not shown) from the second side 10 of the substrate 4.
- the base assembly 14 includes a plurality of contact elements 20, each having a solder tine 22 that extends parallel to the substrate 4 and continues into the plug receiving region 18. It is also envisioned that the contact be configured for other styles of electrical interconnection, such as a pin for plated through hole engagement.
- An intermediate section 24 extends from the solder tine 22 along the periphery of the plug receiving region 18 in the direction of insertion of the modular plug to a contact arm 26 that further extends into the receptacle and is angled away from the periphery into the plug receiving region 18.
- a bracket 28 is advantageously adapted for solder connection.
- the solder tines 22 are soldered to the solder trace 12 and the bracket 28 is soldered to the solder pad 13.
- the solder bracket 28 serves to mechanically support the receptacle modular jack 2, as without the bracket 28 the solder joint at the solder tines 22 is subject to failure as a result of external forces thereupon.
- the base assembly 14 includes a dielectric housing 32 and a stamped lead frame 34.
- the lead frame 34 includes first and second carrier strips 36,38 respectively arranged in an opposing manner to support, therebetween, the elongate members 39 that are formed into the contact elements 20.
- these elongate members 39 have been provided with the reference numbers corresponding to their ultimate configuration, as described above.
- the housing 32 is overmoulded about the lead frame 34 stamped in a continuous manner from a strip of conductive material, thereby captivating and positively retaining the elongate members 39 that make up the contacts 20 and the first carrier strip 36 that makes up the bracket 28 therein.
- the housing 32 includes an upper portion having a central frame 40 that includes opposing legs 42,44 that extend generally parallel to the elongate members 39 of the lead frame 34. Interconnecting the legs 42,44 are an outer rail 46 disposed along the elongate members 39 and the first carrier strip 36. A rearward rail 48 is spaced oppositely therefrom at the solder tine portion 22 of the elongate members 39.
- the legs 42,44 and the rails 46,48 of the central frame 40 define an opening 50 sized and configured for the receiving the modular plug.
- the housing 32 includes a jack receiving portion 56 that is integral with and disposed on the opposite side of the lead frame 34 as the top portion that was described above with reference to Figure 2.
- the jack receiving portion 56 is configured to be received within the opening 6 in the substrate 4.
- the receiving portion 56 is formed in a C-shaped configuration defining an opening 58 that is in communication with the opening 50.
- the free ends of the C-shaped frame of the receiving portion 56 include grippers 60 that are formed about the first carrier strip 36.
- the elongate members 39 of the frame 34 that form the contacts 20 pass across the rearward rail 48, the elongate members 39 fan out so that the solder tines 22 correspond to the pattern of the solder traces 12 on the printed circuit board 4.
- the base assembly 14 is created by stamping and forming the lead frame into the configuration described above.
- the housing is overmoulded thereabout.
- the second carrier strip 38 may be separated from the lead frame 36 by a cut along line A-A ( Figure 4), thereby leaving individual and distinct portions that form the solder tines 22.
- This step is followed by another cutting step along line B-B so that the elongate members 39 are separated from the first carrier strip 36.
- the first carrier strip 36 remains retained therein by the grippers 60 and the forward rail 6.
- the elongate members may be formed into the contact 20 configuration shown in Figure 1 for the contact 20. It is also envisioned that the steps outlined above may occur in a different sequence if desired in light of the particular manufacturing techniques being used.
- the cap 16 is a moulded plastic structure having opposing and interconnected sides 62,64,66,68 that form a tube-like member. This structure is closed at one end by a cover 70 and is left open opposite thereto along receiving face 72.
- the sides 62-68 are constructed to define the cap portion of the plug receiving region 18.
- Disposed within this region are a plurality of partitioning ribs 74 between which the contacts 20 are located when the modular jack 2 is finally assembled.
- ribs 74 are a pair of bulkheads 76 that serve to ensure the modular plug is properly orientated when inserted into the region 18.
- a window 77 is placed in the wall 64 so the modular plug can be retained within the receiving region 18 of the modular jack 2.
- Extending from the face 72 are a pair of posts 78 that are spaced, and configured, to be received within receptacles 54 for positioning the cap 16 relative to the housing assembly 14.
- the housing assembly 14 and the cap 16 are bonded together by epoxy or other bonding techniques, thereby forming the modular jack in a reliable and economical manner.
- An alternative construction technique would involve using drawn wire to form the elongate members 39 that are later formed into the contacts 20.
- the wires would be allowed to extend beyond outer rail 46 of the housing 32, once it has been overmoulded thereupon, a distance that corresponds roughly to the width of the first carrier strip 36.
- These extended portions of the drawn wire would then function as the first carrier strip 36 and ultimately be the bracket 28 used for attachment to the solder pad 13.
- the wires may be easily fanned out radially to correspond to the traces 12.
Abstract
Description
- This invention relates to modular electrical connectors and, in particular, receptacle connectors, commonly known as modular jacks and a method of making said jack. This invention is especially applicable to bottom entry modular jacks.
- Modular jacks are electrical connectors that are widely used in the industry for such purposes as telephone networks and input/output interfaces of other communication peripherals. Modular jacks interconnect with a mating modular plug in a simple linear insertion motion. The dimensions of these jacks and plugs have been standardized and are widely known throughout the industry.
- One particular style of modular jacks is known as a "bottom entry" wherein the receptacle is positioned on a first side of a substrate and extends in an open manner therethrough such that the modular plug may be inserted from an opposite, second side of the substrate. The contact elements within the modular jack are typically surface mount soldered to circuit traces on the first side of the substrate. It is known to include an additional solder bracket that is attachable to the substrate to prevent the forces associated with insertion or removal of the modular plug or external forces that are exerted on the modular plug by way of the cable attached thereto from adversely affecting the integrity of the electrical interconnection with the contacts. The contacts are typically complicated structures that extend along the outside of the jack before entering the housing for engagement with the modular plug. Additionally, the solder bracket is normally inserted into the modular jack housing as part of a separate assembly operation.
- As the quantity of modular jacks used in the industry is very large, what is needed is a modular jack that is simple in design and economical to manufacture.
- It is an object of the invention to provide a modular jack where an additional step for the incorporation of the bracket is not required.
- This object is addressed by stamping a lead frame of contacts having at least one carrier strip, where the carrier strip and the contacts attached thereto are sealed within the structure of the modular jack receptacle and where the contacts are separated from the carrier strip so that the carrier strip forms the bracket.
- It is an object to provide a modular jack having a simple and effective contact structure.
- This object is addressed by forming the contacts so that they lie parallel to the circuit board and extend into the receptacle housing where they then continue, extending along the direction of insertion of the mating modular plug, for electrical engagement therewith.
- An embodiment of the present invention will now be described by way of example with reference to the accompanying drawings, in which:
- Figure 1 is a side cross-sectional view of a modular jack according to the present invention shown mounted upon a substrate;
- Figure 2 is a top view of a base assembly to be incorporated into the modular jack of Figure 1;
- Figure 3 is a side sectional view of the base assembly of Figure 2;
- Figure 4 is a bottom view of the base assembly of Figure 2;
- Figure 5 is a side sectional view of a cap housing that is mounted to the base assembly of Figure 2 to form the modular jack of Figure 1; and,
- Figure 6 is a bottom view of the cap of Figure 5.
- With reference first to Figure 1, a modular jack according to the present invention is shown generally at 2. This
modular jack 2 is of the "bottom entry" variety; however, this invention is applicable to other connector configurations. Themodular jack 2 is mounted upon asubstrate 4, such as a printed circuit board. Thesubstrate 4 includes an opening 6 therethrough. The opening 6 spans first andsecond sides first side 8 aresolder traces 12 for electrical interconnection with themodular jack receptacle 2 and asolder pad 13 for mechanically fixing themodular jack 2 thereto. - The
modular jack 2 includes abase assembly 14 and acap 16 that together define aplug receiving region 18 accessible by a modular plug (not shown) from thesecond side 10 of thesubstrate 4. Thebase assembly 14 includes a plurality ofcontact elements 20, each having asolder tine 22 that extends parallel to thesubstrate 4 and continues into theplug receiving region 18. It is also envisioned that the contact be configured for other styles of electrical interconnection, such as a pin for plated through hole engagement. Anintermediate section 24 extends from thesolder tine 22 along the periphery of theplug receiving region 18 in the direction of insertion of the modular plug to acontact arm 26 that further extends into the receptacle and is angled away from the periphery into theplug receiving region 18. Further included in thebase assembly 14 is abracket 28, in this embodiment the bracket is advantageously adapted for solder connection. When themodular jack 2 is surface mount soldered to thesubstrate 4, thesolder tines 22 are soldered to thesolder trace 12 and thebracket 28 is soldered to thesolder pad 13. Thesolder bracket 28 serves to mechanically support the receptaclemodular jack 2, as without thebracket 28 the solder joint at thesolder tines 22 is subject to failure as a result of external forces thereupon. - With reference now to Figure 2, the
base assembly 14 is shown. Thebase assembly 14 includes adielectric housing 32 and a stampedlead frame 34. Advantageously, in this embodiment, thelead frame 34 includes first andsecond carrier strips elongate members 39 that are formed into thecontact elements 20. For ease of reference, theseelongate members 39 have been provided with the reference numbers corresponding to their ultimate configuration, as described above. - Advantageously, the
housing 32 is overmoulded about thelead frame 34 stamped in a continuous manner from a strip of conductive material, thereby captivating and positively retaining theelongate members 39 that make up thecontacts 20 and thefirst carrier strip 36 that makes up thebracket 28 therein. Thehousing 32 includes an upper portion having acentral frame 40 that includesopposing legs elongate members 39 of thelead frame 34. Interconnecting thelegs outer rail 46 disposed along theelongate members 39 and thefirst carrier strip 36. Arearward rail 48 is spaced oppositely therefrom at thesolder tine portion 22 of theelongate members 39. Thelegs rails central frame 40 define an opening 50 sized and configured for the receiving the modular plug. Extending from therearward rail 48 along the portion of the elongate members that form thesolder tines 22 areears 52 which stabilize themodular jack receptacle 2 upon thesubstrate 4 when themodular jack 2 is mounted thereto, as shown in Figure 1. Disposed along theforward rail 46, towards thefirst carrier strip 36, arereceptacles 54 for receiving a portion of thecap 16 in order to position thecap 16 upon thebase assembly 14, as will be described below. - With reference now to Figure 3 and Figure 4, the
housing 32 includes ajack receiving portion 56 that is integral with and disposed on the opposite side of thelead frame 34 as the top portion that was described above with reference to Figure 2. Thejack receiving portion 56 is configured to be received within the opening 6 in thesubstrate 4. As seen in Figure 4, thereceiving portion 56 is formed in a C-shaped configuration defining anopening 58 that is in communication with the opening 50. The free ends of the C-shaped frame of the receivingportion 56 includegrippers 60 that are formed about thefirst carrier strip 36. Opposite therefrom, where theelongate members 39 of theframe 34 that form thecontacts 20 pass across therearward rail 48, theelongate members 39 fan out so that thesolder tines 22 correspond to the pattern of thesolder traces 12 on the printedcircuit board 4. - The
base assembly 14 is created by stamping and forming the lead frame into the configuration described above. Next, the housing is overmoulded thereabout. Once this is accomplished, thesecond carrier strip 38 may be separated from thelead frame 36 by a cut along line A-A (Figure 4), thereby leaving individual and distinct portions that form thesolder tines 22. This step is followed by another cutting step along line B-B so that theelongate members 39 are separated from thefirst carrier strip 36. Thefirst carrier strip 36 remains retained therein by thegrippers 60 and theforward rail 6. If desired, at this time, the elongate members may be formed into thecontact 20 configuration shown in Figure 1 for thecontact 20. It is also envisioned that the steps outlined above may occur in a different sequence if desired in light of the particular manufacturing techniques being used. - With reference now to Figure 5 and Figure 6, the
cap portion 16 will be more fully described. Thecap 16 is a moulded plastic structure having opposing and interconnectedsides cover 70 and is left open opposite thereto along receivingface 72. The sides 62-68 are constructed to define the cap portion of theplug receiving region 18. Disposed within this region are a plurality of partitioningribs 74 between which thecontacts 20 are located when themodular jack 2 is finally assembled. Opposite theseribs 74 are a pair ofbulkheads 76 that serve to ensure the modular plug is properly orientated when inserted into theregion 18. Awindow 77, also opposite theribs 74 and between thebulkheads 76, is placed in thewall 64 so the modular plug can be retained within thereceiving region 18 of themodular jack 2. Extending from theface 72 are a pair ofposts 78 that are spaced, and configured, to be received withinreceptacles 54 for positioning thecap 16 relative to thehousing assembly 14. Thehousing assembly 14 and thecap 16 are bonded together by epoxy or other bonding techniques, thereby forming the modular jack in a reliable and economical manner. - An alternative construction technique would involve using drawn wire to form the
elongate members 39 that are later formed into thecontacts 20. In this design the wires would be allowed to extend beyondouter rail 46 of thehousing 32, once it has been overmoulded thereupon, a distance that corresponds roughly to the width of thefirst carrier strip 36. These extended portions of the drawn wire would then function as thefirst carrier strip 36 and ultimately be thebracket 28 used for attachment to thesolder pad 13. In addition, as the pitch of thecontact portions 26 is less than the pitch of the solder traces 12, after overmoulding, the wires may be easily fanned out radially to correspond to thetraces 12.
Claims (10)
- A modular jack (2) comprising a housing (16,32) having a receiving region (18) therein for receiving a modular plug therein, where the modular jack (2) includes at least one contact element (20) for mounting to a substrate (4) and having a contact portion (26) within the receiving region (18) for electrically engaging the plug, and a bracket (28) for connection to the substrate; characterized in that the bracket (28) is formed as an extension (36) of the contact (20) and is separated therefrom.
- The modular jack of claim 2, further characterized in that the bracket (28) is a carrier strip (36) for the contact (20).
- The modular jack of claim 3, further characterized in that the contact (20) and the bracket (28) are part of a stamped and formed lead frame (34).
- The modular jack (2) of any one of claims 1-3, further characterized in that the contact element (20) includes a solder tine (22) for surface mount soldering to a solder trace (12) on the substrate (4).
- The modular jack (2) of any one of claims 1-4, further characterized in that the housing (16,32) is formed of a base (32) and a cap (16) with the contact element (20) and the bracket (28) positioned in the base (32).
- A method of manufacturing a modular jack (2) comprising a plug receiving region (18) for receiving a modular plug therein, at least one contact (20) for electrical connection with the modular plug, and a bracket for supporting the jack (2) in a mounted position upon a substrate (4), the method comprising the steps of:
forming an elongate member (20), formable into the contact and having an extension (36) extending therefrom;
overmoulding a housing (32) about the elongate member (20) such that the extension (36) of the elongate member (20) extends from the housing (32);
cutting the extension (30) from the elongate members (20) while retaining the extension (36) within the housing such that the extension is the bracket (28); and
forming the contacts (20) from the elongate members (20). - The method of claim 5, further characterized in that the elongate member (20) is stamped and formed from a lead (34) frame and the extension (36) is a carrier strip.
- The method of claim 6 or claim 7, further characterized in that when forming the elongate member 20, a carrier strip (38) is formed opposite the extension (36) and the method further includes the step of separating the carrier strip (38) from the elongate members (20) after overmoulding the housing (16,32) thereabout.
- The method of any one of claims 6-8 wherein the method further includes the steps of forming a cap (16) and attaching the cap (16) to the housing (32) to further define a plug receiving region (18).
- A modular jack (2) comprising a housing (16,32) having a receiving region (18) therein for receiving a modular plug therein, where the modular jack (2) includes at least one contact element (20) for mounting to a conductor (12) a substrate (4) and having a contact portion (26) within the receiving region (18) for electrically engaging the plug, and a bracket (28) for connection to the substrate; characterized in that the contact element (20) extends directly into the receiving region (18) and is connected to the contact portion (26) by an intermediate portion (24) that extends along the periphery of the receiving region (18) along the direction of insertion of the plug.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9417571A GB9417571D0 (en) | 1994-09-01 | 1994-09-01 | Modular receptacle |
GB9417571 | 1994-09-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0700128A1 true EP0700128A1 (en) | 1996-03-06 |
EP0700128B1 EP0700128B1 (en) | 2000-03-22 |
Family
ID=10760658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950306096 Expired - Lifetime EP0700128B1 (en) | 1994-09-01 | 1995-08-31 | Modular receptacle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0700128B1 (en) |
DE (1) | DE69515763T2 (en) |
GB (1) | GB9417571D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2798007A1 (en) * | 1999-08-31 | 2001-03-02 | Fci Automotive France | Telephone jack connector socket manufacture method having wire contacts/equilibrium plate manufactured together then contacts/equilibrium plate de soldered. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4221458A (en) * | 1978-09-08 | 1980-09-09 | Amp Incorporated | Electrical connector receptacle |
US4292736A (en) * | 1978-09-08 | 1981-10-06 | Amp Incorporated | Method for making jack type receptacles |
DE3502241A1 (en) * | 1985-01-24 | 1986-07-24 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Electrical apparatus |
EP0337632A1 (en) * | 1988-04-11 | 1989-10-18 | The Whitaker Corporation | Electrical device having improved leads for surface mounting on a circuit board |
US5282759A (en) * | 1991-09-13 | 1994-02-01 | Murata Manufacturing Co., Ltd. | Modular jack |
-
1994
- 1994-09-01 GB GB9417571A patent/GB9417571D0/en active Pending
-
1995
- 1995-08-31 EP EP19950306096 patent/EP0700128B1/en not_active Expired - Lifetime
- 1995-08-31 DE DE1995615763 patent/DE69515763T2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4221458A (en) * | 1978-09-08 | 1980-09-09 | Amp Incorporated | Electrical connector receptacle |
US4292736A (en) * | 1978-09-08 | 1981-10-06 | Amp Incorporated | Method for making jack type receptacles |
DE3502241A1 (en) * | 1985-01-24 | 1986-07-24 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Electrical apparatus |
EP0337632A1 (en) * | 1988-04-11 | 1989-10-18 | The Whitaker Corporation | Electrical device having improved leads for surface mounting on a circuit board |
US5282759A (en) * | 1991-09-13 | 1994-02-01 | Murata Manufacturing Co., Ltd. | Modular jack |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2798007A1 (en) * | 1999-08-31 | 2001-03-02 | Fci Automotive France | Telephone jack connector socket manufacture method having wire contacts/equilibrium plate manufactured together then contacts/equilibrium plate de soldered. |
Also Published As
Publication number | Publication date |
---|---|
DE69515763D1 (en) | 2000-04-27 |
GB9417571D0 (en) | 1994-10-19 |
DE69515763T2 (en) | 2000-08-31 |
EP0700128B1 (en) | 2000-03-22 |
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