EP1655810B1 - Connecteur électrique réciproquement relié - Google Patents

Connecteur électrique réciproquement relié Download PDF

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Publication number
EP1655810B1
EP1655810B1 EP05023933A EP05023933A EP1655810B1 EP 1655810 B1 EP1655810 B1 EP 1655810B1 EP 05023933 A EP05023933 A EP 05023933A EP 05023933 A EP05023933 A EP 05023933A EP 1655810 B1 EP1655810 B1 EP 1655810B1
Authority
EP
European Patent Office
Prior art keywords
button
short
legs
electrical connector
casing
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.)
Active
Application number
EP05023933A
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German (de)
English (en)
Other versions
EP1655810A1 (fr
Inventor
Alexandre Auble
Jean-Pierre Picaud
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.)
Tyco Electronics France SAS
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Tyco Electronics France SAS
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Filing date
Publication date
Application filed by Tyco Electronics France SAS filed Critical Tyco Electronics France SAS
Publication of EP1655810A1 publication Critical patent/EP1655810A1/fr
Application granted granted Critical
Publication of EP1655810B1 publication Critical patent/EP1655810B1/fr
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    • 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
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/641—Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
    • 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
    • H01R13/64—Means for preventing incorrect coupling
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap

Definitions

  • the purpose of the invention is to ensure the correct mounting of an electrical connector in a complementary element.
  • a well-known airbag system is composed of a gas generator assembled with a connector linked by two conductors to a control system.
  • the control system orders deployment of the airbag, it sends an electrical signal to the pins of the gas generator so that the pyrotechnic charge is ignited and the bag then inflates.
  • the pins of the gas generator should be short-circuited until the connector is perfectly mounted. The short circuit is done by a flexible metal bar to prevent risks of triggering at the wrong time.
  • a second element of the connector (called the connector position assurance member, here the button) is moved from a first position to a second position and retracts the bar so that the safety short-circuit is eliminated.
  • the connector position assurance member here the button
  • this type of connector includes a male mechanical connection part having locking lugs on the ratchet brackets which can hook onto the gas generator, these brackets having to be bent when the connector is introduced into the housing provided for this purpose in the gas generator.
  • the button is mounted for lateral movement in the casing and also includes ratchet brackets suitable for operating in conjunction with the body of the casing to participate in locking the connector into the gas generator.
  • the button cannot be pushed into the casing before mounting the connector. If this happens the operator, who has to mount the connector, may install the connector in this position with the button already in the end position into the complementary element and destroy the connection system.
  • an airbag igniter includes a safety catch capable both of ensuring complete locking of the connector after the casing has been locked to the gas generator, and of eliminating the short-circuit, since the connector can only be disconnected by withdrawal of the safety latch which then re-establishes the short-circuit.
  • the object of the present invention is, generally speaking, an arrangement which guarantees locking of the connector into the gas generator before elimination of the short-circuit and where the connector position assurance member can only be moved in the mated position of the connector.
  • the present invention therefore proposes an electrical connector with the features of claim 1.
  • This system of stopping by interengaging shapes performs, in this case, the function of Connector Positioning Assurance (CPA), since the button can only be mounted once the casing is correctly positioned and locked into the gas generator.
  • CPA Connector Positioning Assurance
  • Such a system also makes it possible to simplify the connector and gas generator assembly since only a single element (the button) is pressed to bring the connector into its locked position in the gas generator, then, with the button still held down, the button this time having released itself and moved laterally to the extent that the connector is in place in the gas generator, to bring the button into its position for short-circuit elimination and locking in the gas generator. So the work of the operator mounting this connector may be greatly facilitated by the arrangement of this invention.
  • a preferred embodiment includes an electrical connector, in particular for the ignition of a pyrotechnic charge, including a casing having a female mechanical connection structure, a male mechanical connection structure with a complementary element, specifically a gas generator, including connection pins, a short-circuit element suitable for short-circuiting the connecting pins of the complementary element, a button for short-circuit elimination, the male mechanical connection structure of the connector including locking lugs on resilient brackets, suitable for hooking by complementary means onto the complementary element, to lock the connector onto the gas generator, these resilient brackets having to be bent when the connector and the complementary element are assembled and the button being mounted for lateral movement in the casing and also including resilient brackets fitted with locking lugs suitable for operating in conjunction with the male mechanical connection structure of the casing to hook on by the said complementary means and thus participate in locking the connector to the complementary element, characterised in that the resilient brackets of the male mechanical connection structure and the resilient brackets of the button are adapted to operate in conjunction with each other by interengagement of their shapes to prevent lateral movement of the button
  • each bracket of the male mechanical connection structure includes a stop while each bracket of the button includes a complementary excrescence, for operation in conjunction by interengagement of shapes.
  • the connector 1 is mounted on as complementary element 2 that can be part of a gas generator as shown in Fig. 1 .
  • This connector 1, shown in detail in Figs. 2 to 5 includes a casing 3 to be assembled with a cover 4 and a connector position assurance member, the button 5.
  • the button 5 illustrated in Fig. 3 includes a wall 10 with flat surface and general rectangular shape and a male connection structure 11 to the casing 3. Since the plane M perpendicular to the wall 10 and passing through the middle of the long sides of the wall 10 is a plane of symmetry for the button 5, the male connection elements are joined in twos, each being the image of the other in relation to this imaginary plane.
  • the male connection structure 11 of the button 5 also includes two rectangular elastic tabs 12 with an aperture 13 close to the short sides of the wall 10 and completely centred in relation to these short sides, together with a pair of legs named resilient brackets 14 locking to the gas generator 2, completely centred in relation to the short sides, longer and arranged so that they are recessed in relation to the tabs 12.
  • the tabs 12 are used to latch the button 5 to the casing 3, when the button is in its final position.
  • Each of these elements is formed in a single part with the wall 10 and obtained by moulding plastics material. They are mechanically linked and completely aligned perpendicularly to the wall 10, projecting in the same direction.
  • the tabs 15 open the short circuit in the complementary element when the connector is inserted completely.
  • Each tab 15 includes a thin plate 17 close to its free extremity, a lug 18 in its middle and a lug 19 close to its fixed extremity.
  • the thin plates 17 are opposite to each other and are in close relationship when the tabs 15 are in their rest position.
  • the thin plates 17 engage a rib in the complementary part and the tabs 15 are pushed apart.
  • the lugs 18 engage with complementary stops on the casing 3 and the button 5 cannot be moved down therefore.
  • the tabs 15 are in the pushed apart position, that means the connector has entered the complementary element, the lugs 18 do no longer engage the stops on the casing and the button 5 is free from this locking feature.
  • Each locking bracket 14 of the connection structure 11 shown in Fig. 3 includes a flexible body 20, an edge 21 at the free extremity of the bracket and a locking lug 22.
  • the locking lug 22 is close to the free extremity of the bracket 14, opposite the gas generator 2 in its assembled state, and has a V profile bordered by two inclined surfaces 23 and 24.
  • the button 5 When the button 5 is pushed into its final position in the casing 3 and complementary element 2 the locking lugs 22 engage and lock into a groove of the complementary element. To achieve this the locking lugs 22 cooperate with the casing 3.
  • the cover 4 illustrated in Fig. 2 includes, on its side, four brackets 26 and 27 to latch onto the casing 3 linked to a wall 28 covering the electrical connection zone of the casing 3.
  • the casing 3, illustrated in Figs. 1, 2 , 4 and 5 includes a female connection structure 29 for the button 5, a male connection structure 30 for the gas generator 2 and an electrical connection component 31 generally parallelepipedal in form.
  • connection component has two openings 32 for electrical conductors 50 shown in Figs. 6 and 7 .
  • the female connection structure 29 of the casing 3 includes two slots 33 opposite two slots 34, located at the four corners of this structure, two openings 35 of rectangular form, in front of the male connection structure 30 and separated from each other by a thin vertical wall, two openings 36, on either side of and above the male connection structure 30 and two teeth 37, each placed globally at mid-distance from the two slots 33 and 34.
  • the male connection structure 30 of the casing 3 includes an electrical connection structure 39 to the gas generator 2 and two elastic locking brackets 38 forming a mechanical connection structure to the gas generator 2.
  • Each bracket 38 includes a flexible body 40 and a locking lug 41 close to the free extremity of the bracket 38, turned towards the internal surface of the gas generator 2 in its assembled state.
  • the brackets are moved from their rest position until the locking lugs reach the groove in the complementary element and flex back.
  • the electrical connection structure 39 includes two centring pads 42 in the gas generator 2, on either side of two vertical slots 43 each including a large open underface 43A, each slot being bordered by the walls of the electrical connection structure 39.
  • a small open lower side 43B also extends perpendicularly to each large face 43A, between these walls.
  • the pads 42 illustrated in particular in Fig. 2 include a hollow part 44, with the help of which each bracket 38 can bend freely towards the interior of the casing 3 and a solid part 45, the upper surface of which is inclined at an angle close to 45°.
  • the gas generator 2 as illustrated in section in Figs. 6 and 7 includes two pins 46 maintained in short-circuit before and during the intermediate assembly phases by a short-circuit bar 47 consisting of two elastic leaves 48, the extreme edge 49 of each of which is in contact with a pin 46.
  • a rib is between the leaves in the complementary element.
  • each pin 46 is inserted into the electrical connection structure 39 of the casing 3 by the short open side 43B of the slot 43, each pin 46 being then electrically connected to a conducting wire 50 by means of a connection terminal 51 housed in the casing 3.
  • each tab 15 of the button 5 restrains a leaf 48, as illustrated in Fig. 7 , in such a way that its extreme edge 49 is no longer in contact with the pin 46 (elimination of the short-circuit).
  • the flexible body 40 of the bracket 38 includes, on the side closest to the bracket 14 in the assembled state, a recess 55 forming a groove starting at the attachment base of the bracket 38 and ending in a solid portion 52 constituting a stop for around three quarters of the body 40.
  • the bracket 14 of the button 5 includes, on the side closest to the bracket 38 of the casing 3 in the assembled state, an excrescence 53 of triangular profile on the side of the bracket 14 intended to be opposite the groove 55 of the bracket 38 of the casing 3 in the assembled state.
  • the free lower end surface 53A of the excrescence 53 (turned towards the stop 52 in the assembled state) is a straight surface of generally rectangular form, perpendicular to the bracket 14 and to an adjacent straight surface 53B located beside the tabs 15.
  • each excrescence is opposite each other while the surfaces 53A and 53B are linked by a concave surface 53C, freeing the maximum amount of space in front of the excrescence 53, the latter projecting slightly past the extreme edge 21.
  • Fig. 8 shows the first stage, which consists of pre-mounting the button 5 in the direction of the arrow A in the casing 3.
  • the tabs 15 and the brackets 14 are introduced into the female connection element 29 of the casing respectively through openings 35 and 36.
  • the tabs 15 are also guided into the casing 3 and the lugs 18 engage the stops in the casing.
  • Ribs 25 in the studs 16 and 16' are guided into the slots 33 and 34, the bracket 14 of the button 5 follows the electrical connection structure 39 of the casing 3, offset and slightly set back from the bracket 38 of the casing 3.
  • the button although not locked to the complementary element 2, remains integral with the casing because of the openings 13 in the tabs 12 which hold the teeth 37. Ribs on the studs 16 and 16' enable the button 5 on the casing 3 to be guided to its final position.
  • the button 5 To dismantle, the button 5 must be pulled to unlock the connector 1.
  • the brackets 14 can then be slid over the studs 42 and, as the separation of the latter reduces, they pass between the casing 3 and the gas generator 2.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (10)

  1. Connecteur électrique (1), en particulier connecteur de coussin d'air pour l'allumage d'une charge pyrotechnique, englobant un boîtier (3) comportant une structure de connexion mécanique femelle (29) et une structure de connexion mécanique mâle (38), destinée à être accouplée à un élément complémentaire (2), plus spécifiquement un générateur de gaz, englobant deux broches de connexion (46) pouvant être mutuellement court-circuitées par un élément-de court-circuit (47), et un bouton (5) pour supprimer le court-circuit, destiné à être fixé dans ladite structure de connexion femelle (29) et englobant une première paire de branches (15) pour supprimer le court-circuit des broches de connexion, ledit bouton (5) comportant une deuxième paire de branches (14), englobant un élément d'arrêt (53) sur chaque branche (14), ladite structure de connexion mécanique mâle (38), avec ledit élément complémentaire (2), englobant un élément de verrouillage (52) sur chaque élément d'une paire d'éléments élastiques (38), adoptant, lors de l'assemblage du boîtier (3) sur l'élément complémentaire (2), une première position, au niveau de l'arrêt de l'élément d'arrêt (53) dudit bouton (5), empêchant ledit bouton (5) d'atteindre la position finale dans laquelle celui-ci entraîne la suppression du court-circuit par l'intermédiaire de sa première paire de branches (15), au cas où ladite structure de connexion mécanique mâle (38), avec l'élément complémentaire (2), n'est pas encore verrouillée dans la position finale sur ce dernier, et une deuxième position écartée de l'élément d'arrêt (53) dudit bouton (5), permettant audit bouton (5) d'atteindre la position finale lorsque ladite structure de connexion mécanique mâle (38), avec l'élément de fermeture (2), est verrouillée dans la positon finale sur ce dernier ;
    caractérisé en ce que la deuxième paire de branches (14) du bouton (5) englobe une patte de verrouillage (22), verrouillant le bouton (5) dans sa position finale sur l'élément complémentaire (2), et
    caractérisé en outre en ce que chaque branche de la première paire de branches (15) englobe une patte (18) pour empêcher le déplacement du bouton (5) au cas où les branches (15) se trouvent dans leur position de repos, les branches englobant de fines plaques opposées (17), coopérant avec l'élément complémentaire (2) lorsque le connecteur rentre dans l'élément complémentaire, pour déplacer les branches (15) hors de leur position de repos.
  2. Connecteur électrique selon la revendication 1, caractérisé en ce que ledit élément de verrouillage (52) est associé à une rainure (55), guidant ledit élément d'arrêt (53) vers ledit élément de verrouillage (52).
  3. Connecteur électrique selon la revendication 2, caractérisé en ce que ladite rainure (55) est formée par un évidement dans le corps flexible (40) dudit élément élastique (38).
  4. Connecteur électrique selon l'une des revendications 2 et 3, caractérisé en ce que ladite rainure (55) s'étend au-delà d'environ les trois quarts de la longueur dudit corps flexible (40).
  5. Connecteur électrique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit élément d'arrêt (53) a un profil de forme généralement triangulaire.
  6. Connecteur électrique selon la revendication 5, caractérisé en ce que l'élément d'arrêt englobe une surface inférieure libre (53A), droite, de forme généralement rectangulaire et perpendiculaire à la surface libre adjacente (53B) de l'élément d'arrêt la plus proche dudit élément de suppression du court-circuit (15).
  7. Connecteur électrique selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ladite première position correspond à un fléchissement du corps flexible (40) dudit élément élastique (38), sa patte (41) reposant contre une paroi de l'élément complémentaire (2).
  8. Connecteur électrique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ladite deuxième position correspond à une introduction desdites pattes (41) dans un évidement (54) dudit élément complémentaire (2).
  9. Connecteur électrique selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un déplacement du bouton (5) est empêché par le premier groupe de branches (15) lorsque le connecteur se trouve dans une position complètement désaccouplée.
  10. Connecteur électrique selon la revendication 9, caractérisé en ce que le bouton (5) peut se déplacer librement jusqu'à son blocage par la deuxième paire de branches (14), en coopération avec la paire d'éléments élastiques (38), lors du fléchissement du premier groupe de branches (15) lorsque le connecteur se trouve dans une position partiellement accouplée.
EP05023933A 2004-11-04 2005-11-03 Connecteur électrique réciproquement relié Active EP1655810B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0411760A FR2877504A1 (fr) 2004-11-04 2004-11-04 Connecteur electrique a interference de formes.

Publications (2)

Publication Number Publication Date
EP1655810A1 EP1655810A1 (fr) 2006-05-10
EP1655810B1 true EP1655810B1 (fr) 2008-03-26

Family

ID=34953311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05023933A Active EP1655810B1 (fr) 2004-11-04 2005-11-03 Connecteur électrique réciproquement relié

Country Status (5)

Country Link
EP (1) EP1655810B1 (fr)
AT (1) ATE390740T1 (fr)
DE (1) DE602005005603T2 (fr)
ES (1) ES2302112T3 (fr)
FR (1) FR2877504A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4903630B2 (ja) * 2007-05-21 2012-03-28 日本圧着端子製造株式会社 コネクタ及び電気的接続装置
DE102010029670A1 (de) * 2010-06-02 2011-12-08 Tyco Electronics Amp Gmbh Verbinderbaugruppe für einen elektrischen Steckverbinder, elektrischer Steckverbinder und konfektioniertes elektrisches Kabel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5275575A (en) 1992-10-09 1994-01-04 Trw Inc. Electrical connection system with safety interlock
BRPI0105829B1 (pt) * 2000-11-17 2016-05-24 Framatome Connectors Int conector de encaixe
JP4034125B2 (ja) * 2002-06-06 2008-01-16 日本圧着端子製造株式会社 電気的接続装置
US6811424B2 (en) * 2003-03-26 2004-11-02 Fci Americas Technology, Inc. Electrical connector having connector position assurance member

Also Published As

Publication number Publication date
FR2877504A1 (fr) 2006-05-05
ES2302112T3 (es) 2008-07-01
DE602005005603T2 (de) 2009-04-30
DE602005005603D1 (de) 2008-05-08
EP1655810A1 (fr) 2006-05-10
ATE390740T1 (de) 2008-04-15

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