EP1376777A1 - Bedienersspannungsunterdrückungseinrichtung beim Verbinden von pyrotechnischen Vorrichtungen - Google Patents

Bedienersspannungsunterdrückungseinrichtung beim Verbinden von pyrotechnischen Vorrichtungen Download PDF

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Publication number
EP1376777A1
EP1376777A1 EP03291575A EP03291575A EP1376777A1 EP 1376777 A1 EP1376777 A1 EP 1376777A1 EP 03291575 A EP03291575 A EP 03291575A EP 03291575 A EP03291575 A EP 03291575A EP 1376777 A1 EP1376777 A1 EP 1376777A1
Authority
EP
European Patent Office
Prior art keywords
cover
housing
operator
connector
wires
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.)
Withdrawn
Application number
EP03291575A
Other languages
English (en)
French (fr)
Other versions
EP1376777A8 (de
Inventor
Philippe Georges Marie Burguburu
Péniamin Matossian
Jean Rivenc
Jean-Pierre Vedel
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.)
Renault SAS
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1376777A1 publication Critical patent/EP1376777A1/de
Publication of EP1376777A8 publication Critical patent/EP1376777A8/de
Withdrawn legal-status Critical Current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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/6485—Electrostatic discharge protection

Definitions

  • the present invention relates to a device for voltage reduction, due to static electricity, of an operator when connecting a device electrical or electronic, such as a device pyrotechnic for protective airbag used in a motor vehicle.
  • this stake to electrical ground in principle ensures safety necessary to prevent any risk of setting accidental operation of these devices.
  • this protection is not sufficient when the operator connects the connector to the pyrotechnic device to connect it to the box device control electronics. Indeed, the connector to plug in is at the end of a cable conductive wires with the other end connected to the electronic control unit and this link is then behaves like a bond to ground.
  • the operator who holds the connector in his hand plug in, is at a high electrical potential, setting electrical contact of sockets or pins of connector respectively with pins or sockets present in the body of the device pyrotechnic, can result in the production of relatively high discharge currents which can activate the pyrotechnic device. So if the voltage resulting from the high electrical potential of the operator is below a threshold voltage of protection of the device, the latter is not used. On the other hand, if this voltage is greater than the threshold of device protection, this protection comes into play and eliminates the charges towards the vehicle body electric, resulting in a circulation of a large current can accidentally activate the pyrotechnic device.
  • Another solution to remove any risk of accidental activation of the device pyrotechnic consists in ensuring that the operator voluntarily grounded before performing any hookup, but this solution is at the mercy of a simple forgetting of the operator to ground himself and not therefore does not eliminate any risk of accidental piloting of the pyrotechnic device.
  • the object of the present invention is to eliminate the disadvantages above by proposing a device for voltage reduction, due to static electricity, of an operator when connecting to a device electrical or electronic connector connected by a cable with conductive wires to a connected electronic unit grounded and allowing to pilot or command the device,
  • the connector comprising a housing of support made of insulating material from at least two sockets or two metal pins connected at ends stripped of the conductive wires of the cable housed in the support box and to be connected respectively with two pins or two sockets the appliance, and a cover for closing the housing in insulating material, and which is characterized in that the cover has its closing wall comprising orifices crossing it located above the stripped ends conductive wires in the immediate vicinity of these to define a lower disruptive electrical potential to the high electrical potential of an operator whose finger of one hand is resting on the holes during the input of the connector to connect it to the device which is grasped by the operator's other hand, so that cause a discharge arc directly between your finger on the cover and any of the
  • the housing includes grooves in which the stripped ends of the conductive wires and which are arranged relative to the cover so the top of stripped ends of these wires either in contact with or at immediate proximity of the inner face of the cover on which open the orifices.
  • the device may further include a thin layer of an electrically conductive coating deposited on the cover and having holes located respectively above the holes in the cover.
  • the connector housing is fixed to the body of the device by locking means comprising at at least two elastic tabs secured to the housing engaging in a recess of this body, and at least two lances of the cover which can engage between the two elastic tabs to spread them radially one of each other and block them in the recess of the body of the device.
  • the two lances are advantageously part of a stirrup piece mounted movable relative to the cover through it enters an inactive position partly projecting from the cover and a position of locking of the locking tabs of the housing to which the connecting branch of the lances is substantially in flush with the cover closing wall.
  • the stirrup piece can be manually inserted from its inactive position to its locked position housing to the body of the device.
  • the thickness of the cover wall is relatively small so the distance between the operator's finger and each stripped wire is the most weak possible.
  • the device is a device pyrotechnic for protective element used in a motor vehicle, but the invention applies to all pyrotechnic device on which an operator must manually connect a connector.
  • the reference 1 designates schematically an airbag protecting the driver or passenger of a motor vehicle, which is associated with the pyrotechnic device 2 of the type gas generator.
  • the pyrotechnic device 2 can be connected to a electronic control unit 3 via a cable 4 to conductive wires 5 housed in sheaths electrical insulation 6 and an electrical connector 7 connected to cable 4 and plugging into the device pyrotechnics 2.
  • the electronic box of piloting 3 is fixed to the body acting as mass of the motor vehicle and therefore behaves like a bond to ground for phenomena related to static electricity and, for that same aspect, stripped free ends 5a of the wires 5 housed in the connector 7 are grounded.
  • the connector 7 includes a housing 8 in one electrically insulating material, such as plastic, supporting at least two metal sockets 9, of which only one is shown, and in which two metal pins 10 of the pyrotechnic device 2 housed in a body metallic 2a thereof being electrically isolated of this body.
  • one electrically insulating material such as plastic
  • Each electric socket 9 can be made up of two semi-cylindrical lamellae whose ends convex are elastically spaced from each other when inserting the pin 10 into the socket 9 to come into elastic contact on this pin.
  • the stripped ends 5a of the conducting wires 5 are respectively connected to the sockets of the connector 7, for example by crimping.
  • the connector 7 When the connector 7 is connected to the body 2a of the pyrotechnic device 2, the latter can receive control signals of the housing 3 circulating by the wires conductors 5, sockets 9 and pins 10 for activate the protective devices by vehicle collision.
  • the connector 7 further comprises a cover 11 electrically insulating material, such as plastic, ensuring the closure of the housing 8.
  • the cover 11 has lateral tabs 11a whose free ends engage elastically in conjugate recesses 8a of the housing 8 for locking the cover 11 to this housing. As shown in figure 3, the ends of the elastically deformable legs 11a are bent at right angles to ensure the locking the cover 11 to the housing 8.
  • the cover 11 has its wall 11b for closing the housing 8 comprising orifices or holes 11c passing through this wall and located above stripped ends 5a of the conducting wires 5 to close proximity to these ends to define a relatively low disruptive electrical potential and any case lower than the high electrical potential that can have an operator handling connector 7 for the connect to body 2a of igniter 2.
  • This potential disruptive is directly related to the geometric distance of the outer face of the wall 11b on which can lean a finger on one hand of the operator and the part top of the stripped ends 5a of the wires 5 located just below the internal face of the wall 11b and in contact with the latter. So the thickness of the wall 11b should be as small as possible.
  • This disruptive potential also takes into account the potential disruptive air, which is around 3.3 kV / mm.
  • the housing 8 comprises parallel grooves 8b, each defined between two parallel fins 8c making integral part of the case and in which are housed respectively the stripped ends 5a of the wires 5 so as to press each stripped end 5a onto the inner face of the wall 11b of the cover 11 below openings 11c.
  • several orifices 11c in the present case in number of four, are located above a stripped end corresponding 5a and along it.
  • the part of the cable 4 passing through one side walls of the cover 11 is immobilized in the corresponding passage of this wall by any means suitable for preventing traction on the ends stripped 5a relative to the connector 7.
  • the housing 8 is fixed to the body 2a of the device pyrotechnic 2 by locking means comprising at least two elastic tabs 12 secured to the housing 8 and engaging in a recess 13 of the body 2a, and at at least two lances 14 of the cover 11 which can engage between the two elastic tabs 12 to spread them apart radially from one another and block them in the chamber 13.
  • the two lances 14 are part of a piece in stirrup mounted movable relative to the cover 11 at through of it between an inactive position at which the planar branch 15 connecting lances 14 protrudes above the wall 11b of the cover 11 and a locking position of the legs 12 in the recess 13 at which the connecting branch 15 is found substantially flush with the external face of the wall 11b.
  • the stirrup part 14, 15 is manually operated by the operator by pushing in of it through the cover and the housing 8 for lock the housing 8 to the body 2a.
  • connector 7 To connect connector 7 to pyrotechnic device 2, the operator grasps with one hand device 2 and connector 7 with the other hand. entering device 2, the operator switches it to its own electrical potential, which can be very high and by grasping connector 7, the operator positions his fingers D on the wall 11b of the cover 11, in particular on the face comprising the orifices 11c opposite the bare parts of the bare ends 5a of the wires conductors 5 to cause an electric arc 16 directly between his finger and the bare ends 5a wires 5 since the disruptive potential following this line is less than the electrical potential of the operator.
  • the operator finds himself sufficiently discharged of its static electricity and thus, when connecting connector 7 to pyrotechnic device 2, the electrical potential of the device 2 is weak and possible electric arc between pin 12 and the corresponding socket 9 is very low energy, and in any case does not produce current large enough to activate accidentally the pyrotechnic device 2.
  • the zone of the external face of the wall 11b in contact with the operator's finger D is not proximity of the parts of the stripped ends 5a of the wires 5 below the holes 11c
  • the covering 17 has orifices 17a arranged respectively above the orifices 11c of the wall 11b coaxially with these. This coating thus guarantees an electrical proximity to the potential of the finger the operator with respect to the bare ends 5a of the wires 5.
  • the device described above of the invention minimally modifies the known structure of the connectors connection to pyrotechnic devices since it just simply provide holes through of the wall of the cover ensuring the discharge passage of static electricity between the outside of the cover and the bare wires in the connector housing and just as easily provide housing grooves bare wires in the housing 8. In other words, the molding tools used to date for the connector manufacturing are barely changed.
  • the sockets 9 of the housing 8 can be replaced with pins while pins 10 will then be replaced by sockets.
  • the device protection of the invention can be applied to connectors with a higher number of sockets and pins for connecting this connector to the electrical appliance to be protected.
  • the different parts of the housing 8 can be produced in one piece by molding the plastic material this case and it is the same for the parts of the cover 11 of connector 7.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Air Bags (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Elimination Of Static Electricity (AREA)
EP03291575A 2002-06-27 2003-06-26 Bedienersspannungsunterdrückungseinrichtung beim Verbinden von pyrotechnischen Vorrichtungen Withdrawn EP1376777A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0208023 2002-06-27
FR0208023A FR2841692B1 (fr) 2002-06-27 2002-06-27 Dispositif pour la reduction de tension des operateurs lors du branchement de dispositifs pyrotechniques

Publications (2)

Publication Number Publication Date
EP1376777A1 true EP1376777A1 (de) 2004-01-02
EP1376777A8 EP1376777A8 (de) 2005-05-18

Family

ID=29717120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03291575A Withdrawn EP1376777A1 (de) 2002-06-27 2003-06-26 Bedienersspannungsunterdrückungseinrichtung beim Verbinden von pyrotechnischen Vorrichtungen

Country Status (2)

Country Link
EP (1) EP1376777A1 (de)
FR (1) FR2841692B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114361853A (zh) * 2021-12-09 2022-04-15 安徽光硕电子科技有限公司 具有锁紧防水结构的连接器及其安装方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19804170A1 (de) * 1998-02-03 1999-08-05 Siemens Ag Elektrische Baueinheit sowie Verfahren zur Herstellung einer elektrischen Baueinheit
DE19856325A1 (de) * 1998-12-07 2000-06-15 Bosch Gmbh Robert Zündvorrichtung für Rückhaltemittel in einem Fahrzeug
US6341972B1 (en) * 1996-04-30 2002-01-29 Framatome Connectors International Connector with secondary latching and with a lateral cable outlet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6341972B1 (en) * 1996-04-30 2002-01-29 Framatome Connectors International Connector with secondary latching and with a lateral cable outlet
DE19804170A1 (de) * 1998-02-03 1999-08-05 Siemens Ag Elektrische Baueinheit sowie Verfahren zur Herstellung einer elektrischen Baueinheit
DE19856325A1 (de) * 1998-12-07 2000-06-15 Bosch Gmbh Robert Zündvorrichtung für Rückhaltemittel in einem Fahrzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114361853A (zh) * 2021-12-09 2022-04-15 安徽光硕电子科技有限公司 具有锁紧防水结构的连接器及其安装方法

Also Published As

Publication number Publication date
EP1376777A8 (de) 2005-05-18
FR2841692B1 (fr) 2004-09-10
FR2841692A1 (fr) 2004-01-02

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