WO1999000879A1 - Cordon de raccordement, ensemble de connexion et procede de production correspondant - Google Patents

Cordon de raccordement, ensemble de connexion et procede de production correspondant Download PDF

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Publication number
WO1999000879A1
WO1999000879A1 PCT/SE1997/001154 SE9701154W WO9900879A1 WO 1999000879 A1 WO1999000879 A1 WO 1999000879A1 SE 9701154 W SE9701154 W SE 9701154W WO 9900879 A1 WO9900879 A1 WO 9900879A1
Authority
WO
WIPO (PCT)
Prior art keywords
patch cable
connector
jacket
conductors
assembly
Prior art date
Application number
PCT/SE1997/001154
Other languages
English (en)
Inventor
Björn HOLMSTRÖM
Original Assignee
Interconnect Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE69708694T priority Critical patent/DE69708694T2/de
Application filed by Interconnect Ab filed Critical Interconnect Ab
Priority to PT97933080T priority patent/PT992088E/pt
Priority to CA002295078A priority patent/CA2295078A1/fr
Priority to PCT/SE1997/001154 priority patent/WO1999000879A1/fr
Priority to JP50971299A priority patent/JP2001508927A/ja
Priority to PL97337737A priority patent/PL184853B1/pl
Priority to AT97933080T priority patent/ATE209830T1/de
Priority to AU36368/97A priority patent/AU3636897A/en
Priority to ES97933080T priority patent/ES2167006T3/es
Priority to MXPA00000069A priority patent/MXPA00000069A/es
Priority to EP97933080A priority patent/EP0992088B1/fr
Publication of WO1999000879A1 publication Critical patent/WO1999000879A1/fr
Priority to NO19996431A priority patent/NO317374B1/no

Links

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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5845—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the strain relief being achieved by molding parts around cable and connections

Definitions

  • the present invention relates to a patch cable and connector assembly.
  • the present invention also relates to a method for manufacturing a patch cable and connector assembly.
  • the patch cable and connector assemblies used today have an activated strain relief which presses the cable itself extremely hard. If the conductors in the cable are close to each other, this means that they can be further compressed under high pressure, flattening out the insulation and bringing the conductors too close to each other. The result will be cross talk, and the NEXT value is degraded.
  • One of the major problems with this is that the effect may not be immediately apparent, as the plastic of the insulation is "cold flowing", i.e. it takes time for the effect to occur.
  • Another disadvantage with this type of patch cable is that the risk of short circuiting increases when the insulations enclosing the conductors have been cracked due to compression. These disadvantages will be even more apparent and troublesome when the operating frequency is increasing, .
  • Today' s information highway is already here, operating at speeds up to 100 MHz for patch cables of "Category 5". The development will increase, not decrease, the operating frequency even more. So these problems will be highlighted even more in the future.
  • the object of the present invention is to solve the above mentioned problems. This object is achieved with a method of manufacturing a patch cable and connector assembly according to Claim 1, and with a patch cable and connector assembly according to Claim 5.
  • the assembly comprises a patch cable comprising a number of conductors, wherein each conductor is surrounded by an insulation, and a jacket surrounding all the conductors with their insulations, and a connector comprising a strain relief, and a number of connection pins.
  • the method according to the invention comprises the following steps: to strip off the jacket a predetermined distance from at least one end of the patch cable; to assemble the patch cable and the connector, connecting each conductor with a connection pin, without activating the strain relief; to fix the assembled patch cable and connector in a moulding means intended for moulding; and to mould, with the aid of the moulding means, a device which fills up the space between the connector and the conductors and also surrounds the transition between the patch cable with jacket and the patch cable with the jacket stripped off, in such a way that the conductors are not clamped and the device functions as a mechanically stable strain relief.
  • the main advantage with the method according to the present invention is that the conductors are not clamped and that they run without restrictions up to the connection pins.
  • the moulding means comprises a lower part and an upper part, a holding fixture and two bar halves.
  • the fixation step of the method comprises the steps: to push the connector into a hole in the holding fixture for fixating of the front part of the assembly; - to place the patch cable with jacket into a recess in each bar half; and to assemble the lower part to the upper part with the holding fixture and the bar halves arranged therebetween, resulting in a mould.
  • the moulding means comprises also a filler tube connected to at least one mould in the moulding means.
  • the moulding step of the method comprises the steps : to pour melted cast compound into the filler tube to be distributed to one mould for each patch cable; and to disassemble the moulding means when the cast compound has solidified.
  • the cast compound is a plastic material.
  • Another object of the invention is to provide a patch cable and connector assembly.
  • the assembly comprises a patch cable comprising a number of conductors, wherein each conductor is surrounded by an insulation, and a jacket surrounding all the conductors with their insulations, wherein the jacket is stripped off a predetermined distance from at least one end of the patch cable.
  • the assembly also comprises a connector comprising a strain relief, and a number of connection pins, wherein each conductor is connected to a connection pin. The strain relief of the connector is not activated.
  • the assembly also comprises a moulded device which has filled up the space between the connector and the conductors and also surrounds the transition between the patch cable with jacket and the patch cable with the jacket stripped off, in such a way that the conductors are not clamped and the device functions as a mechanically stable strain relief.
  • the main advantage with the assembly according to the present invention is that the conductors are not clamped and that they run without restrictions up to the connection pins. This will guarantee a patch cable and connector assembly with high performance. A performance which will not degrade with time.
  • the moulded device is integral, giving rise to a bending radius between the connector and the patch cable with the jacket. This prevents that the cable can be sharply bent where it enters the conductor, where this bend can result in a deterioration of about 2 dB in cross stalk performance, degrading signal quality and slowing down the general network performance.
  • the moulded device is made of a plastic material.
  • Figure 1 is a cross . -sectional view of a patch cable and connector assembly according to the state of the art
  • Figure 2 is another cross-sectional view of the assembly according to figure 1;
  • Figure 3 is a cross-sectional view of a patch cable and connector assembly according to the present invention.
  • Figure 4 is another cross-sectional view of the assembly according to figure 3;
  • Figure 5a shows a side view of the lower part and upper part of the moulding means;
  • Figure 5 b shows a side view of the moulding means
  • Figure 6 is a flow chart of the method according to the present invention.
  • FIG 1 there is disclosed a cross-sectional view of a patch cable and connector assembly according to the state of the art.
  • the assembly 10 comprises a patch cable 12 comprising a number of conductors 14, wherein each conductor 14 is surrounded by an insulation (not disclosed), and a jacket 16 surrounding all the conductors 14 with their insulations.
  • the assembly (10) also comprises a connector 18 comprising a strain relief 20, which is activated. This means that the strain relief 20 presses the conductors 14 extremely hard. If the conductors 14 are close to each other, this means that they can be further compressed under high pressure, flattening out the insulation and bringing the conductors 14 too close to each other (see figure 2) .
  • One result of this is cross talk.
  • Another difficulty with this problem is that the effect may not be immediately apparent as the plastic of the insulation cold flows, i.e. it takes time for the effect to occur.
  • FIG 2 there is disclosed another cross-sectional view of the assembly 10 according to figure 1.
  • the activated strain relief presses and cuts into the patch cable.
  • the conductors 14 are being pressed under high pressure and are being deformed, whereby the insulation 22 surrounding the conductors 14 being cracked.
  • the risk of short circuit is significant between conductor A and conductor B due to the fact that the insulations surrounding these conductors A, B have been completely cracked. The situation will become worse when time goes on, due to the fact that plastic is a material that cold flows.
  • FIG 3 there is disclosed a cross-sectional view of a patch cable and connector assembly according to the present invention.
  • the assembly 30 comprises a patch cable 32 comprising a number of conductors 34, wherein each conductor 34 * is surrounded by an insulation (not disclosed) , and a jacket 36 surrounding all the conductors 34 with their insulations.
  • the assembly 30 also comprises a connector 38 comprising a not activated strain relief (not disclosed) .
  • the jacket 36 is stripped off a predetermined distance from at least one end of the patch cable.
  • the connector 38 also comprises a number of connection pins (not disclosed) , wherein each conductor 34 is connected to a connection pin.
  • the assembly 30 also comprises a moulded device 40 which has filled up the space between the connector 38 and the conductors 34 and also surrounds the transition 42 between the patch cable 32 with jacket 36 and the patch cable with the jacket 36 stripped off. In this way the conductors 34 are not clamped and the device 40 functions as a mechanically stable strain relief.
  • the moulded device 40 is integral, giving rise to a bending radius between the connector 38 and the patch cable 32 with the jacket 36. Without this feature, the cable could be sharply bent where it enters the connector, resulting in a deterioration of about 2 dB in cross talk performance, degrading signal quality and slowing down the general network performance.
  • the moulded device 40 is preferably made of a plastic material.
  • FIG 4 there is disclosed another cross-sectional view of the assembly according to figure 3.
  • the strain relief included in the connector is not activated. Instead the moulded device 40 surrounds the patch cable 32 comprising the jacket 36 and the conductors 34, wherein each conductor 34 is surrounded by an insulation 44. As is clearly disclosed the conductors 34 are not compressed and they run without restriction right up to the connection pins (not disclosed; see figure 3) .
  • the moulded device 40 will give a very stable mechanical strain relief.
  • FIG 5a there is disclosed a side view of the lower part and the upper part of the moulding means.
  • the moulding means 50 is intended for moulding the device 40 (see figures 3 and 4) and comprises a lower part 52 and an upper part 54, a holding fixture 56 and two bar halves 58 ⁇ , 58 2 .
  • the lower part 52 and the upper part 54 both comprise a number of (in this case 2) recesses 60 ⁇ , 60 2 , 62 ⁇ , 62 2 -
  • FIG 5b there is disclosed a side view of the moulding means 50 disclosed in figure 5a.
  • a filler tube 64 which has connection to the recesses 60 ⁇ , 60 2 , 62 ⁇ , 62 2 .
  • the moulding means 50 When the moulding means 50 is used one connector is pushed into a hole (disclosed with dashed lines) in the holding fixture 56 for fixation of the front part of the assembly. Then the patch cable with jacket is placed into recesses 66 1 , 662, 68 1 , 68 2 in the two bar halves 58 ⁇ , 58 2 . Then the lower part 52 is assembled with the upper part 54 with the holding fixture 56 and the bar halves 58 ⁇ , 58 2 arranged therebetween. This results in two moulds, each of which is intended for producing a device 40 (see figures 3 and 4) . Then melted cast compound is poured into the filler tube 64 to be distributed to the recesses 6O 1 , 60 2 , 62 ⁇ , 62 2 , giving rise to two patch cable and connector assemblies with moulded devices.
  • FIG 6 there is disclosed a flow chart of the method according to the present invention.
  • the method for manufacturing a patch cable and connector assembly according to the invention starts at block 70. Thereafter, at block 72, the method continues with the step: to strip off the jacket a predetermined distance from at least one end of the patch cable. Then, at block 74, the patch cable and connector are assembled, connecting each conductor with a connection pin, without activating the strain relief. Then, at block 76, the assembled patch cable and connector are fixed in a moulding means intended for moulding.
  • the fixation step 76 comprises the steps: to push the connector into a hole in the holding device for fixation of the front part of the assembly; to place the patch cable with jacket into a recess in each bar half; and to assemble the lower part tothe upper part with the holding fixture and the bar halves arranged therebetween, resulting in a mould.
  • the moulding step 78 comprises the steps : to pour melted cast compound into the filler tube to be distributed to one mould for each patch cable; and to disassemble the moulding means when the cast compound has solidified.
  • the cast compound is preferably a plastic material .

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L"invention concerne un cordon de raccordement, un ensemble de connexion et un procédé de production correspondant. L"ensemble (30) comprend un cordon de raccordement (34) comportant un certain nombre de conducteurs (34), chacun enveloppé d"une isolation, et une gaine (36) qui, à partir au moins d"une extrémité du cordon de raccordement (32), entoure tous les conducteurs (34) dotés de leur isolation. L"ensemble (30) comprend également un connecteur (38) comportant un serre-câble, et un certain nombre de broches, chaque conducteur (34) étant connecté à une broche. Le serre-câble du connecteur (38) n"est pas activé. L"ensemble (30) comprend également un dispositif moulé (40) qui remplit l"espace entre le connecteur (38) et les conducteurs (34) et qui entoure la transition (42) entre le cordon de raccordement (32) avec sa gaine (36) et le cordon de raccordement (32) avec sa gaine (36) retirée, de telle manière que les conducteurs (34) ne soient pas serrés et que le dispositif (40) fonctionne comme un serre-câble mécaniquement stable.
PCT/SE1997/001154 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant WO1999000879A1 (fr)

Priority Applications (12)

Application Number Priority Date Filing Date Title
PL97337737A PL184853B1 (pl) 1997-06-26 1997-06-26 Sposób wytwarzania zespołu sznura łączeniowego i złącza oraz zespół sznura łączeniowego i złącza
PT97933080T PT992088E (pt) 1997-06-26 1997-06-26 Estrutura de cabo de remendo e caixa e um metodo para o seu fabrico
CA002295078A CA2295078A1 (fr) 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant
PCT/SE1997/001154 WO1999000879A1 (fr) 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant
JP50971299A JP2001508927A (ja) 1997-06-26 1997-06-26 パッチ・ケーブルおよびコネクタ・アセンブリおよびその製造方法
DE69708694T DE69708694T2 (de) 1997-06-26 1997-06-26 Verbindungskabel, verbinderzusammenbau und herstellungsverfahren
AT97933080T ATE209830T1 (de) 1997-06-26 1997-06-26 Verbindungskabel, verbinderzusammenbau und herstellungsverfahren
MXPA00000069A MXPA00000069A (es) 1997-06-26 1997-06-26 Montaje de cable de conexiones temporales y conector, y un metodo para manufacturarlo.
ES97933080T ES2167006T3 (es) 1997-06-26 1997-06-26 Un montaje de cable cubierto y conector, y un metodo para fabricar el mismo.
AU36368/97A AU3636897A (en) 1997-06-26 1997-06-26 A patch cable and connector assembly, and a method for manufacturing the same
EP97933080A EP0992088B1 (fr) 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant
NO19996431A NO317374B1 (no) 1997-06-26 1999-12-23 En sammenstilling av patch-kabel og koplingsstykke og en fremgangsmate for a tilvirke dette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1997/001154 WO1999000879A1 (fr) 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant

Publications (1)

Publication Number Publication Date
WO1999000879A1 true WO1999000879A1 (fr) 1999-01-07

Family

ID=20406361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/001154 WO1999000879A1 (fr) 1997-06-26 1997-06-26 Cordon de raccordement, ensemble de connexion et procede de production correspondant

Country Status (12)

Country Link
EP (1) EP0992088B1 (fr)
JP (1) JP2001508927A (fr)
AT (1) ATE209830T1 (fr)
AU (1) AU3636897A (fr)
CA (1) CA2295078A1 (fr)
DE (1) DE69708694T2 (fr)
ES (1) ES2167006T3 (fr)
MX (1) MXPA00000069A (fr)
NO (1) NO317374B1 (fr)
PL (1) PL184853B1 (fr)
PT (1) PT992088E (fr)
WO (1) WO1999000879A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6323427B1 (en) 1999-05-28 2001-11-27 Krone, Inc. Low delay skew multi-pair cable and method of manufacture
US6365838B1 (en) 1999-05-28 2002-04-02 Krone, Inc. Tuned patch cable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862993A (en) * 1953-08-31 1958-12-02 Amp Inc Electric cable shield termination
US4697339A (en) * 1985-03-26 1987-10-06 E. I. Du Pont De Nemours And Company Method for the processing of a cable end and cable connector for connection to the cable
US5251279A (en) * 1990-06-19 1993-10-05 The Furukawa Electric Co., Ltd. Optical connector with molded-on resin boot covering distal ends of tension member and sheath of optical fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2862993A (en) * 1953-08-31 1958-12-02 Amp Inc Electric cable shield termination
US4697339A (en) * 1985-03-26 1987-10-06 E. I. Du Pont De Nemours And Company Method for the processing of a cable end and cable connector for connection to the cable
US5251279A (en) * 1990-06-19 1993-10-05 The Furukawa Electric Co., Ltd. Optical connector with molded-on resin boot covering distal ends of tension member and sheath of optical fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6323427B1 (en) 1999-05-28 2001-11-27 Krone, Inc. Low delay skew multi-pair cable and method of manufacture
US6365838B1 (en) 1999-05-28 2002-04-02 Krone, Inc. Tuned patch cable

Also Published As

Publication number Publication date
PL337737A1 (en) 2000-08-28
EP0992088A1 (fr) 2000-04-12
CA2295078A1 (fr) 1999-01-07
DE69708694T2 (de) 2002-09-19
ATE209830T1 (de) 2001-12-15
ES2167006T3 (es) 2002-05-01
NO317374B1 (no) 2004-10-18
PL184853B1 (pl) 2002-12-31
DE69708694D1 (de) 2002-01-10
NO996431D0 (no) 1999-12-23
AU3636897A (en) 1999-01-19
NO996431L (no) 2000-02-22
JP2001508927A (ja) 2001-07-03
EP0992088B1 (fr) 2001-11-28
PT992088E (pt) 2002-05-31
MXPA00000069A (es) 2004-04-05

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