EP2816672A1 - Système de décharge de traction pour ensemble de connecteur électrique - Google Patents

Système de décharge de traction pour ensemble de connecteur électrique Download PDF

Info

Publication number: EP2816672A1
Authority: EP; European Patent Office
Prior art keywords: strain relief; relief system; locked position; guide; actuating
Prior art date: 2013-06-21
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

EP13173136.6A

Other languages

German (de)

English (en)

Other versions

EP2816672B1 (fr

Inventor

Marek Mleczko

Slawomir Wrzosek

Piotr Pilczuk

Michal Grudzewski

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.)

Delphi Technologies Inc

Original Assignee

Delphi Technologies Inc

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.)

2013-06-21

Filing date

2013-06-21

Publication date

2014-12-24

2013-06-21 Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc

2013-06-21 Priority to EP13173136.6A priority Critical patent/EP2816672B1/fr

2014-06-21 Priority to CN201410376758.5A priority patent/CN104241949B/zh

2014-12-24 Publication of EP2816672A1 publication Critical patent/EP2816672A1/fr

2016-11-16 Application granted granted Critical

2016-11-16 Publication of EP2816672B1 publication Critical patent/EP2816672B1/fr

Status Active legal-status Critical Current

2033-06-21 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
- 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
- H01R13/5804—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 comprising a separate cable clamping part
- H01R13/5812—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 comprising a separate cable clamping part the cable clamping being achieved by mounting the separate part on the housing of the coupling device

Definitions

the present invention relates to a strain relief system for a connector assembly, the strain relief system comprising a guide retainer and actuating jaws assigned to the retainer.
Strain relief systems are used to provide strain relief in particular between electrical connector assemblies and electrical cables. Even though strain relief systems are used in many fields of electric and electronic applications, in particular in the newly growing field of hybrid and electrical vehicles such strain relief systems are often necessary. In this field cables are often required to transmit high currents which go along with correspondingly high electrical powers. For this reason, often cables of large diameter including relatively large electrically conductive metal cores with core diameters on the order of several millimeters need to be used. The stiffness of such cables or of similarly stiff multi-core cables can result in large tensile, bending and torsional strains acting on connected electrical components when such cables are moved for example upon assembly or maintenance. Such strains can lead to disconnection or even damage of the cable and the respective electrical components.
strain relief systems which can be mounted e.g. to electrical connector assemblies and which are provided with means for the reception of electrical cables. Strains resulting e.g. from cable movement are thus mainly absorbed by the strain relief system and therefore are not transmitted to electrical components within the connector assembly electrically connected to the electrical cable.
a typical prior art example of a strain relief system is disclosed in document WO 93/06637 A1 .
a strain relief system comprising a threaded coupling nut which receives a pair of bars which are used for clamping a cable therebetween.
a corresponding clamp nut can be threaded to the corresponding threads of the coupling nut for closing the system.
the bars are provided axially stationary relative to the clamp body in order to absorb strains resulting from cable movement.
a further prior art strain relief system is disclosed in document US 2012/0037416 A1 .
a packing member made of an elastic material such as rubber which acts as a strain relief device for securing a cable received therein to a flexible conduit.
respective portions of the packing member are deformed such that an annular retaining rib of the packing member is forced into engagement with a grooved periphery of the flexible conduit.
a tapered portion of the packing member is pressed onto the cable. Due to said compression of the flexible packing member, strain relief is provided between cable and conduit.
Document WO 2010/068291 A1 describes a strain relief system comprising a collet and a retainer.
the collet is provided with an opening for the reception of a cable and corresponding fingers are provided around the opening of the collet along a longitudinal axis of the inserted cable.
the fingers of the collet are bent towards the cable to fix the cable to the collet. Due to this bending, serrated edges of the fingers are pressed onto an outer surface of the cable.
a strain relief system to be used in connection with a connector assembly, in particular with a high power electrical connector assembly, which overcomes the above problems. It is in particular an object of the present invention to provide a strain relief system which can provide a homogeneous compression on an inserted cable to provide an improved fixing force fixing the cable e.g. to a corresponding retainer. It is still a further object of the present invention to provide a strain relief system comprising components which are less susceptible to wearout while at the same time they can provide an optimum strain relief function.
a strain relief system comprising a guide retainer and at least one actuating jaw arranged movably inside the retainer.
the system is assigned to an electrical connector assembly and adapted to receive an electrical cable within an opening provided in the guide retainer of the strain relief system.
the electrical connector assembly is adapted to transmit a high electrical power of at least 10 kW, preferably of at least 50 kW, even more preferably of at least 100 kW, and most preferably of at least 150 kW.
the electrical connector assembly is e.g. adapted to transmit a current of 40 A at a voltage of 850 V and thus a high electrical power of 34 kW.
the guide retainer can e.g. have a cylindrical basic structure or similar.
a longitudinal axis of the strain relief system is defined by an inserted cable, i.e. a cable received in the opening.
the strain relief system comprises at least one actuating jaw, preferably two actuating jaws, assigned to the guide retainer, which actuating jaws are arranged at least partially inside the guide retainer to be movable essentially along the longitudinal axis of the inserted cable from a pre-locked position to a final locked position.
the strain relief system according to the present invention allows for the actuating jaws to be placeable in said pre-locked position, i.e. it allows for a pre-position stage, such that the strain relief system can e.g. be shipped to customers already preassembled as one part.
the at least one actuating jaw as a whole upon movement from said pre-locked position to said final locked position along the longitudinal axis of the inserted cable, the at least one actuating jaw as a whole performs also a movement in a direction essentially perpendicular to the longitudinal axis of the inserted cable to fix the inserted cable to the guide retainer.
the actuating jaw moves as a whole towards the inserted cable and presses against the same to provide the desired strain relief function.
the strain relief system comprises at least two actuating jaws, which enclose the inserted cable and which upon movement from the pre-locked position towards the final locked position, each as a whole, moves towards each other. Upon said movement, an inserted cable is pressed and thus fixed in between the two actuating jaws.
an electrical connector assembly which comprises the inventive strain relief system.
the components of the strain relief system are injection molded plastic components which are less susceptible to wearout as for example typical elastic components such as rubber components. These can more easily be used in environments as they occur for example in automotive high power electrical applications.
Fig. 1 shows an exploded and Fig. 2 a respectively assembled view of a connector assembly 200 and a strain relief system 100.
the connector assembly 200 is provided with sealing components, i.e. with a housing seal 209, a seal retainer 211 and cable seal 207.
sealing components i.e. with a housing seal 209, a seal retainer 211 and cable seal 207.
shielding parts 205 are arranged around an inner housing 203 which serve to electromagnetically shield contact terminals 400.
a CPA device 213 is used which upon assembly is inserted into a corresponding channel of the connector housing 201. All these components are generally known to the skilled person and are not essential for the present invention, so that it is refrained from giving a detailed explanation thereof.
the strain relief system 100 shown comprises two actuating jaws 104, 105 which can be inserted into a guide retainer 101 of the strain relief system 100.
the two jaws are identical, which is advantageous for manufacturing reasons, although it is not strictly necessary. Details thereof will be explained with reference to Figs. 3 to 7 .
the inventive function of the strain relief system can be accomplished similarly using only one actuating jaw, while the function of the other jaw is substituted by e.g. a corresponding inner surface of the guide retainer 101.
more than two actuating jaws can be provided.
the strain relief system 100 comprises a guide retainer 101 and actuating jaws 104, 105 which can be inserted into the guide retainer 101 in a pre-assembly or pre-locked position within the guide retainer 101 (see Figs. 5 and 6 ).
each of the actuating jaws 104, 105 is provided with at least one locking tongue 111, each locking tongue being adapted to be inserted into a pre-lock recess 117 (see Figs. 5 to 7 ) provided within respective opposing faces of the guide retainer 101 to hold the actuating jaws 104, 105 in the pre-lock position.
the strain relief system can be delivered e.g. to customers already pre-assembled which simplifies further assembly processes carrier out by the customers.
the strain relief system 100 is adapted to receive an electrical cable 300 through an opening 108 (see Figs. 1 and 5 ).
a such inserted cable defines a longitudinal axis 601 of the strain relief system along which the actuating jaws 104, 105 can be further inserted into the guide retainer from said pre-locked position towards a final locked position.
the actuating jaws 104, 105 are moved essentially from a main portion 102 of the guide retainer towards a compression portion 103 of the guide retainer, thus being evenly moved towards each other and thus being homogeneously pressed against outer surfaces of an inserted cable to fix said cable 300 to the guide retainer 101.
the at least one actuating jaw 104, 105 is provided with at least one longitudinal compression rib 107 oriented essentially parallel to the longitudinal axis 601 of the inserted cable 300.
the at least one actuating jaw 104, 105 is further or alternatively provided with at least one, preferably at least two, lateral compression ribs 109 (see also Fig. 6 ) oriented in a direction essentially perpendicular to the longitudinal axis 601 of an inserted cable.
the ribs 107, 109 are arranged on respective interior surfaces of the respective actuating jaw 104, 105 facing towards the inserted cable 300.
the ribs 107, 109 are essentially evenly pressed onto an outer surface of the inserted cable 300.
the provision of said compression ribs 107, 109 allows advantageously to evenly distribute the fixing force resulting from said homogeneous pressing forces along outer surfaces of an inserted cable 300 and thus to fix and secure an inserted cable 300 inside the guide retainer 101.
the final pressing force can be controlled in an easily determinable manner.
the rib 107 is particularly adapted to prevent a cable rotation, whereas the rib 109 effectively prevents a movement of the cable in longitudinal direction.
each of the actuating jaws 104, 105 comprises a first guide structure, namely a guide rib 113.
the retainer in turn has a second guide structure, namely a guide groove 115.
the first guide structure interacts with the corresponding second guide structure of the guide retainer 101 such that upon said movement, the actuating jaws 104, 105 as a whole perform a movement in a direction 603 (see Fig. 6 ) essentially perpendicular to the longitudinal axis 601 of the inserted cable 300.
the guide ribs 113 move along a corresponding guiding groove 115.
At least one of the guide strictures is inwardly inclined towards the inserted cable 300, preferably, by an angle with respect to the longitudinal axis 601 of an inserted cable 300 within 1° to 45°, more preferably within 2° to 30°, and most preferably within 3° to 20°.
the guiding grooves 115 are inclined towards an inserted cable.
similarly an inclined structure can be provided at the at least one actuating jaw to accomplish a similar movement.
the choice of the appropriate angle allows for example to determine a suitable compression force for fixing an inserted cable 300 to the guide retainer 101 and it also allows to adapt the closing force.
At least one, preferably each, of the actuating jaws 104, 105 comprises a support rib 129 which extends from an outer surface of the actuating jaw 104, 105.
the guide ribs 113 extend from said support ribs which allows to place said guide ribs 113 in appropriate positions thus allowing for an optimal guiding of the actuating jaws 104, 105 inside of the retainer.
the elongated guide member 130 allows that in a preferred embodiment, upon movement of the actuating jaws 104, 105 from the pre-locked position towards the final locked position, outer faces of the guide member 130 interact with an interior guide structure, e.g. an interior surface of the guide retainer 101, said interaction additionally forcing the actuating jaws 104, 105 towards each other.
the guide retainer 101 comprises a compression (i.e. pressing) portion 103 and a main portion 102, the main portion 102 being provided with a larger inner diameter as the compression portion 103.
the pre-lock recess 117 is provided within a surface of the main portion 102 and each locking tongue 111 extends at least partially in a direction essentially perpendicular to the main longitudinal axis 601 of an inserted cable 300 into the pre-lock recess 117 when the actuating jaws 104 are placed in the pre-locked position. Due to the reduced diameter of the compression portion 103, upon movement of the actuating jaws 104, 105 from the main portion towards the compression portion, the actuating jaws are moved towards each other for optimally fixing an inserted cable 300.
each locking tongue upon movement of the actuating jaws 104, 105 out of the pre-locked position, each locking tongue is moved out of the pre-lock recess 117, moves beneath a separation bar 120 into a final lock recess 119 and upon completion of said movement, in a preferred embodiment, each locking tongue 111 abuts a corresponding stop surface 122 (see Fig. 6 ) of the guide retainer 101 when the actuating jaws 104, 105 are placed in the final locked position.
each of the actuating jaws 104, 105 is provided with a collar 121, 123 extending within a plane oriented essentially perpendicular to the longitudinal axis 601 of the inserted cable.
each locking tongue 111 extends from a respective collar 121, 123 within said plane.
Fig. 8 illustrates a cable 300 being received by the strain relief system 100 with the actuating jaws 104, 105 being placed in the pre-locked position.
the longitudinal compression ribs 107 abut an outer surface of the inserted cable 300 but do not yet exert any pressure on said cable.
Fig. 9 illustrates the situation when the actuating jaws 104, 105 are moved into the final locked position. Now, the longitudinal compression ribs 107 of the two jaws are pressed from opposite sides onto the outer surfaces of the inserted cable thus exerting an essentially homogeneous compression along the longitudinal axis of the inserted cable for fixing the inserted cable 300 to the guide retainer 101.
a connector housing 201 is shown mounted or coupled to the strain relief system 100, i.e. to the guide retainer 101.
a locking latch 215 (see also Fig. 2 ) of the connector housing 201 is inserted into a final lock recess 119 of the guide retainer 101 to lock the connector housing 201 to the guide retainer 101.
the locking latch 215 is provided with a stop edge 216 which rests on a corresponding section 124 of a collar 121, 123 provided on each actuating jaw 104, 105 to hold the actuating jaws 104, 105 in the final locked position.
the mounting of the connector housing 201 to the strain relief system 100 allows for an automatic movement of the actuating jaws 104, 105. That is, upon mounting the connector housing 201 to the strain relief system 100, said stop edges 216 engage the collar 121, 123 thus pressing the actuating jaws 104, 105 from the pre-locked position towards the final lock position and when the locking latches 215 are placed within the final lock recess 119, the actuating jaws 204, 205 are secured in the final locked position due to the interaction of stop edges 216 with the corresponding section 124 of each actuating jaw. Due to this interaction also the fixation of the inserted cable 300 to the guide retainer 101 is additionally secured. In other words, the present invention allows for an automatic activation of the strain relief function upon assembly of the connector system.
Figs. 10 to 13 illustrate a further embodiment of a strain relief system 100'.
at least one actuating jaw 104' is provided with a locking tongue 111' not provided on a collar but preferably being shaped as an essentially s-shaped tongue.
locking tongues 111' of each actuating jaw 104', 105' are placed in corresponding pre-lock recesses 117' provided in corresponding faces of the guide retainer 101'.
each actuating jaw 104', 105' is provided with at least one guiding tongue 112', which extend from a respective collar 121' provided on each actuating jaw 104', 105'.
actuating jaws 104', 105' Upon movement of the actuating jaws 104', 105' the same move along respective guide channels 114' provided within respective faces of the guide retainer 101'. Due to said guiding tongues 112', the movement of each actuating jaw 104', 105' is further guided and secured within the guide retainer 101'.
locking tongue 111' allows for a beneficial automatic unlocking of the actuating jaws 104', 105' from the pre-locked position through interaction with a connector housing 201'.
a release tongue 217' of the connector housing 201' presses each locking tongue 111' out of the pre-lock recess 117', thereby releasing each of the actuating jaws 104', 105' to be moveable from the pre-locked position towards the final lock position as shown in Fig. 13 .
a locking latch 215' is placed in the pre-lock recess 117' thereby for securing the mating of the connector housing 201' to the strain relief system 100.

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Details Of Connecting Devices For Male And Female Coupling (AREA)

EP13173136.6A 2013-06-21 2013-06-21 Système de décharge de traction pour ensemble de connecteur électrique Active EP2816672B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP13173136.6A EP2816672B1 (fr)	2013-06-21	2013-06-21	Système de décharge de traction pour ensemble de connecteur électrique
CN201410376758.5A CN104241949B (zh)	2013-06-21	2014-06-21	用于电连接器组件的应变消除系统

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP13173136.6A EP2816672B1 (fr)	2013-06-21	2013-06-21	Système de décharge de traction pour ensemble de connecteur électrique

Publications (2)

Publication Number	Publication Date
EP2816672A1 true EP2816672A1 (fr)	2014-12-24
EP2816672B1 EP2816672B1 (fr)	2016-11-16

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ID=48699567

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP13173136.6A Active EP2816672B1 (fr)	2013-06-21	2013-06-21	Système de décharge de traction pour ensemble de connecteur électrique

Country Status (2)

Country	Link
EP (1)	EP2816672B1 (fr)
CN (1)	CN104241949B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3457501A1 (fr)	2017-09-19	2019-03-20	Aptiv Technologies Limited	Boîtier de connecteur comprenant un couvercle
US10573988B2 (en)	2017-08-01	2020-02-25	Delphi Technologies, Llc	Cable assembly with strain relief
WO2021101719A1 (fr) *	2019-11-21	2021-05-27	Commscope Technologies Llc	Ensemble de connecteurs coaxiaux jumelés
EP3849025A1 (fr) *	2020-01-07	2021-07-14	Aptiv Technologies Limited	Connecteur haute tension ayant une grille arrière comportant des moyens de soulagement de traction et méthode d'assemblage associée
US20220140526A1 (en) *	2020-11-02	2022-05-05	Delta Electronics, Inc.	Charging gun and strain relief structure thereof
EP4622017A1 (fr) *	2024-03-21	2025-09-24	Rosenberger Hochfrequenztechnik GmbH & Co. KG	Ensemble de terminaison d'un ensemble connecteur de câble, ensemble connecteur de câble et procédé d'assemblage d'un ensemble connecteur de câble

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WO2010068291A1 (fr)	2008-12-12	2010-06-17	Tyco Electronics Corporation	Ensemble connecteur avec réducteur de tension
US20100248530A1 (en) *	2006-08-29	2010-09-30	Adc Telecommunications, Inc.	Threaded connector and patch cord having a threaded connector
US20110312211A1 (en) *	2010-06-22	2011-12-22	John Mezzalingua Associates, Inc.	Strain relief accessory for coaxial cable connector
US20120037416A1 (en)	2010-08-11	2012-02-16	Jiun Wei Chiou	Double-packing cable and flexible conduit gland

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CN101685957B (zh) *	2008-09-24	2012-04-18	泰科电子(上海)有限公司	线缆锁紧装置和具有该线缆锁紧装置的网线插头
TW201218539A (en) *	2010-06-22	2012-05-01	Mezzalingua John Ass	Strain relief accessory for coaxial cable connector

2013
- 2013-06-21 EP EP13173136.6A patent/EP2816672B1/fr active Active
2014
- 2014-06-21 CN CN201410376758.5A patent/CN104241949B/zh active Active

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WO1993006637A1 (fr)	1991-09-27	1993-04-01	Glenair, Inc.	Pince serre-cable de decharge de traction
US20100248530A1 (en) *	2006-08-29	2010-09-30	Adc Telecommunications, Inc.	Threaded connector and patch cord having a threaded connector
US20090111323A1 (en) *	2007-10-31	2009-04-30	Donald Andrew Burris	Coaxial Connector with Telescoping Center Conductor Mechanism
WO2010068291A1 (fr)	2008-12-12	2010-06-17	Tyco Electronics Corporation	Ensemble connecteur avec réducteur de tension
US20110312211A1 (en) *	2010-06-22	2011-12-22	John Mezzalingua Associates, Inc.	Strain relief accessory for coaxial cable connector
US20120037416A1 (en)	2010-08-11	2012-02-16	Jiun Wei Chiou	Double-packing cable and flexible conduit gland

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US10573988B2 (en)	2017-08-01	2020-02-25	Delphi Technologies, Llc	Cable assembly with strain relief
US10897099B2 (en)	2017-08-01	2021-01-19	Aptiv Technologies Limited	Cable assembly with strain relief
EP3457501A1 (fr)	2017-09-19	2019-03-20	Aptiv Technologies Limited	Boîtier de connecteur comprenant un couvercle
WO2021101719A1 (fr) *	2019-11-21	2021-05-27	Commscope Technologies Llc	Ensemble de connecteurs coaxiaux jumelés
US11424582B2 (en)	2019-11-21	2022-08-23	Commscope Technologies Llc	Ganged coaxial connector assembly
US11942735B2 (en)	2019-11-21	2024-03-26	Commscope Technologies Llc	Ganged coaxial connector assembly
EP3849025A1 (fr) *	2020-01-07	2021-07-14	Aptiv Technologies Limited	Connecteur haute tension ayant une grille arrière comportant des moyens de soulagement de traction et méthode d'assemblage associée
US20220140526A1 (en) *	2020-11-02	2022-05-05	Delta Electronics, Inc.	Charging gun and strain relief structure thereof
US11646529B2 (en) *	2020-11-02	2023-05-09	Delta Electronics, Inc.	Charging gun and strain relief structure thereof
EP4622017A1 (fr) *	2024-03-21	2025-09-24	Rosenberger Hochfrequenztechnik GmbH & Co. KG	Ensemble de terminaison d'un ensemble connecteur de câble, ensemble connecteur de câble et procédé d'assemblage d'un ensemble connecteur de câble
WO2025195863A1 (fr)	2024-03-21	2025-09-25	Rosenberger Hochfrequenztechnik Gmbh & Co. Kg	Ensemble de terminaison d'un agencement de connecteur de fiche de câble, agencement de connecteur de fiche de câble et procédé d'assemblage d'un agencement de connecteur de fiche de câble

Also Published As

Publication number	Publication date
CN104241949A (zh)	2014-12-24
EP2816672B1 (fr)	2016-11-16
CN104241949B (zh)	2017-04-12

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EP2816672B1 (fr)	2016-11-16	Système de décharge de traction pour ensemble de connecteur électrique
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US20240106150A1 (en)	2024-03-28	Electrical Connector
EP3849025A1 (fr)	2021-07-14	Connecteur haute tension ayant une grille arrière comportant des moyens de soulagement de traction et méthode d'assemblage associée
KR102782781B1 (ko)	2025-03-18	나사 접촉부 및 크림프 접촉부를 위한 절연체
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