EP3790123A1 - Verbindungsanordnung für eine passive sicherheitsvorrichtung, die gegen elektrostatische entladungen geschützt ist - Google Patents

Verbindungsanordnung für eine passive sicherheitsvorrichtung, die gegen elektrostatische entladungen geschützt ist Download PDF

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Publication number
EP3790123A1
EP3790123A1 EP20194429.5A EP20194429A EP3790123A1 EP 3790123 A1 EP3790123 A1 EP 3790123A1 EP 20194429 A EP20194429 A EP 20194429A EP 3790123 A1 EP3790123 A1 EP 3790123A1
Authority
EP
European Patent Office
Prior art keywords
contact
connector
squib
ferrite block
contacts
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.)
Pending
Application number
EP20194429.5A
Other languages
English (en)
French (fr)
Inventor
Stéphane BARLERIN
René Lehmann
Youssef BOURI
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.)
Aptiv Technologies AG
Original Assignee
Aptiv Technologies Ltd
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
Application filed by Aptiv Technologies Ltd filed Critical Aptiv Technologies Ltd
Publication of EP3790123A1 publication Critical patent/EP3790123A1/de
Pending legal-status Critical Current

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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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/6485—Electrostatic discharge protection
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7197—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
    • H01R13/7033—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity making use of elastic extensions of the terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • 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
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to the field of motor-vehicle connection systems and more particularly to the field of connection systems for passive motor-vehicle safety devices such as airbags, safety belt pre-tensioners, etc., i.e. for the devices referred to as SRSs (safety restraint systems).
  • SRSs safety restraint systems
  • passive safety devices may comprise gas-generating squibs that are fired electronically.
  • the squib comprises a squib connector, itself coupled to an airbag connector.
  • airbag connector will be used to refer to a connector connected, via electrical wires, to a control device that triggers a squib, irrespectively of whether the squib is a squib intended to inflate an airbag, to pre-tension a safety belt, or to do something else.
  • the squib When a shock exceeds a set acceleration or deceleration threshold, the squib is triggered by the control device, which is programmed to send a signal to the squib to which it is connected, via electrical wires and an airbag connector.
  • the explosion that results engenders a sudden combustion that induces a high gas pressure in a piston (pre-tensioner) or an inflatable bag (airbag).
  • a squib could also trigger under the effect of an electrostatic discharge, especially at the moment at which the airbag connector is coupled to the connector of the squib.
  • potential electric charge generated, for example, via electrostatic effects in the wires connecting the control device to the airbag connector may be transmitted to the squib body, which itself is connected to ground, by way of the ground contact of the squib, of the third contact and of the ferrite block. It is therefore evacuated without accumulating and without risk of the squib being triggered, during a discharge.
  • This connector potentially also comprises one or more of the features of Claims 2 to 5, considered alone or in combination with one or more others.
  • the invention relates to a connection assembly according to Claim 6 for a passive motor-vehicle safety device.
  • connection assembly potentially also comprises one or more of the features of Claims 7 to 9, considered alone or in combination with one or more others.
  • the invention relates to a method according to Claim 10 for mounting a connection assembly for a motor-vehicle safety device.
  • the set of connectors 1 comprises a squib connector 2 and an airbag connector 3 forming a counter-connector.
  • the squib connector 2 comprises a bushing 4 housed in a cavity of a metal squib body 5 connected to the ground of the vehicle, and two squib-connector contacts (not shown in the figures). These two contacts are male contacts each comprising a pin housed in a cavity 7 provided in the bushing 4. In this embodiment, each of the male contacts is electrically insulated from the bushing 4.
  • the airbag connector 3 comprises a casing 8, a cover 9 and a device 10 for ensuring the position of the connectors (connector position assurance or CPA).
  • the airbag connector 3 furthermore comprises a ferrite block 11, and first and second female contacts 12 that are each respectively designed to couple with a male contact of the squib connector 2.
  • the airbag connector 3 also comprises a third contact 20.
  • the first and second contacts 12 are each electrically connected to a control circuit, via electrical wires 13.
  • the first and second contacts 12 and third contact 20 each respectively consist of a conductive metal strip that was cut from a metal sheet, then folded and/or rolled. Each of the first and second contacts 12 and third contact 20 are of a single piece.
  • the ferrite block 11 for example has a resistivity comprised between 10 7 and 10 9 ohms.
  • the ferrite block 11 comprises two parallel passages 6 that extend longitudinally between a front aperture 18 and a rear aperture 19 (the terms “front” and “rear” corresponding, in this document, to the front portion of the airbag connector 3, which portion is coupled to the squib connector 2, and to the far-end portion, via which the electrical wires 13 exit from the airbag connector 3, respectively).
  • the first and second contacts 12 of the airbag connector 3 each comprise a contact segment 14 for establishing an electrical contact with a contact of the squib connector 2, a crimping segment 15 for making an electrical connection to the control circuit, a short-circuit contact 16 and an elastic strip 17.
  • the crimping segments 15 and the elastic strip 17 of each of the contacts 12 are each respectively inserted via the front aperture 18 of a passage 6 provided in the ferrite block 11.
  • each elastic strip 17 of each of the first and second contacts 12 has a lyre shape.
  • each elastic strip 17 comprises two tongues 21 that extend essentially parallel to each other, between a supporting segment 22 common to both tongues 21, and a free end 23.
  • the supporting segment 22 is folded to 180° with respect to an intermediate segment 24, from which the crimping segment 15 extends.
  • the tongues 21 and the crimping segment 15 are each folded from the supporting segment 22 and from the intermediate segment 24, respectively.
  • the tongues 21 extend longitudinally above the crimping segment 15.
  • Each tongue 21 comprises one tooth 25 that extends transversely with respect to the longitudinal direction of the tongues 21.
  • Each tooth 25 has a contact surface 27 intended to make contact with the interior surface of a passage 6 provided in the ferrite block 11.
  • the tongues 21 are separated by a slit 26. The tongues 21 may move closer to each other elastically, in the space provided by the slit 26, but tend to return elastically to a rest position in which they exert a contact force via the contact surface 27 of each tooth 25.
  • Each elastic strip 17 comprises two surfaces 27 of contact with the ferrite block 11.
  • the two contacts 12 make contact with the ferrite block 11 (but in variants, just one of the first and second contacts 12 could make contact with the ferrite block).
  • the third contact 20 comprises four elastic tongues 28 extending from a common segment 29. Each of these tongues 28 is shaped to bear against the external surface of the ferrite block 11.
  • the third contact 20 comprises a plurality of points of contact (for example four points of contact) with the ferrite block 11, in order to improve the electrical continuity between the third contact 20 and the ferrite block 11.
  • connection assembly 1 To mount a connection assembly 1 according to the embodiment described above or its variants,

Landscapes

  • Air Bags (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP20194429.5A 2019-09-05 2020-09-03 Verbindungsanordnung für eine passive sicherheitsvorrichtung, die gegen elektrostatische entladungen geschützt ist Pending EP3790123A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1909790A FR3100667B1 (fr) 2019-09-05 2019-09-05 Ensemble de connexion pour dispositif de sécurité passive, protégé contre les décharges électrostatiques

Publications (1)

Publication Number Publication Date
EP3790123A1 true EP3790123A1 (de) 2021-03-10

Family

ID=68425123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20194429.5A Pending EP3790123A1 (de) 2019-09-05 2020-09-03 Verbindungsanordnung für eine passive sicherheitsvorrichtung, die gegen elektrostatische entladungen geschützt ist

Country Status (2)

Country Link
EP (1) EP3790123A1 (de)
FR (1) FR3100667B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1009070A2 (de) 1998-12-07 2000-06-14 Framatome Connectors International Gefilterter elektrischer Verbinder mit mehreren Ferritteilen
US20050020136A1 (en) * 2003-07-23 2005-01-27 Johannes Richard A. Electrical connector contact
US20130241281A1 (en) 2010-07-29 2013-09-19 Fci Automotive Holding Electrical circuit and method of manufacturing said electrical circuit
US20130309884A1 (en) 2011-02-01 2013-11-21 Tyco Electronics France Sas Electrical connector for a safety restraint system having a ground contact
EP3116075A1 (de) 2015-07-08 2017-01-11 Delphi Technologies, Inc. Elektrischer steckverbinder für ein sicherheitsrückhaltesystem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1009070A2 (de) 1998-12-07 2000-06-14 Framatome Connectors International Gefilterter elektrischer Verbinder mit mehreren Ferritteilen
US20050020136A1 (en) * 2003-07-23 2005-01-27 Johannes Richard A. Electrical connector contact
US20130241281A1 (en) 2010-07-29 2013-09-19 Fci Automotive Holding Electrical circuit and method of manufacturing said electrical circuit
US20130309884A1 (en) 2011-02-01 2013-11-21 Tyco Electronics France Sas Electrical connector for a safety restraint system having a ground contact
EP3116075A1 (de) 2015-07-08 2017-01-11 Delphi Technologies, Inc. Elektrischer steckverbinder für ein sicherheitsrückhaltesystem

Also Published As

Publication number Publication date
FR3100667B1 (fr) 2023-12-08
FR3100667A1 (fr) 2021-03-12

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