EP1655810B1 - Electrical connector with interengaging shapes - Google Patents
Electrical connector with interengaging shapes Download PDFInfo
- 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
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- 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.)
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- 230000000295 complement effect Effects 0.000 claims abstract description 41
- 230000008030 elimination Effects 0.000 claims abstract description 14
- 238000003379 elimination reaction Methods 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims 1
- 230000000063 preceeding effect Effects 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- H01R13/64—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.
Abstract
Description
- The purpose of the invention is to ensure the correct mounting of an electrical connector in a complementary element.
- There are many circumstances in which it is important that it should only be possible to establish or eliminate an electrical connection (such as a short-circuit, for example) when the preliminary assembly phases for the connector have been carried out.
- This is particularly true in the case of assembly of airbag systems where maintaining the short-circuit in the airbag system is an essential safety element.
- A well-known airbag system is composed of a gas generator assembled with a connector linked by two conductors to a control system. When 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. For safety purposes, 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.
- Once the connector is locked (by a first element of the connector, called here a casing), onto the gas generator, 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. However there is still a risk of unwanted disconnection if the connector is not correctly locked onto the gas generator.
- It will be shown, with regard to this, that 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.
- It is therefore important to ensure that the button only reaches its final position (and therefore eliminates the short-circuit between the pins on the gas generator) in the connector if the casing is not only assembled but, specifically, locked into the gas generator and only in these circumstances.
- It is also very important, that 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.
- According to an arrangement, already well-known, from
US 5,275,575 , 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. - From
EP 1369965 a connector with a position assurance member for an airbag system is known. Here the button can be pushed into its final position, when the connector is not received in the complementary element. As the locking arms on the casing do not flex back any more it should not be possible to mate the connector when the button is pushed down to its final position. But if the operator tries to mate the connector to the complementary element the system can be destroyed or at least partly broken.. - A similar design with similar features is described in
EP 1207591 andUS 6,811,424 . - 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.
- 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.
- According to the features of implementation, which are particularly simple and easy both for manufacture and use:
- the said locking element is associated with a groove guiding the said stop element towards the said locking element;
- the said groove is formed by a recess in the flexible body of the said resilient member;
- the said groove extends over approximately three quarters of the length of the said flexible body;
- the said stop element is joined to a bracket locking the said button to the said complementary element;
- the said stop element has a profile which is generally triangular in form;
- the stop element includes a lower free surface which is straight and generally rectangular in form and is perpendicular to the adjacent free surface of the stop element closest to the said element for short-circuit elimination;
- the free surfaces closest to the short-circuit elimination element are straight and opposite each other;
- the free surfaces adjacent and perpendicular to each stop element are linked by a concave free surface;
- the said first position corresponds to a bending of the flexible body of the said resilient member so that its lug rests against a wall of the complementary element; and
- the said second position corresponds to an introduction of the said lugs into a recess in the said complementary element.
- 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 when the brackets of the male mechanical connection structure are bent and, consequently, to prevent the button from reaching the final short-circuit elimination position by the action of the latter on the short-circuit element.
- Preferably, 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 characteristics and advantages of the invention will be evident from the description which follows, given as a preferred, but not exhaustive, example, with reference to the attached drawings, in which:
-
Fig. 1 is a perspective view of the igniter composed of a connector in accordance with the invention mounted on a gas generator -
Fig. 2 is an exploded view of the different elements of the connector; -
Fig. 3 is a similar view toFig. 1 but showing separately the structure of the connector which enables short-circuit elimination (button); -
Fig. 4 is an elevation of the connector structure (casing) which makes the mechanical interface with the button and the electrical and mechanical interface with the gas generator; -
Fig. 5 is a plan view of the same casing from above; -
Figs. 6 and 7 are two section-elevation views of the casing mounted on the gas generator with, respectively, the button placed in the intermediate position (short-circuit maintained) and the button placed in the final position (short-circuit eliminated); and -
Figs. 8, 9, 10 and 11 are four schematic views showing respectively the button in intermediate position in the casing before mounting on the gas generator, the button in intermediate position in the casing in intermediate position (not locked) in the gas generator, the button in intermediate position in the casing in final position (locked) in the gas generator and the button in final position (locked) in the casing in final position (locked) in the gas generator (short-circuit eliminated). - The connector 1 is mounted on as
complementary element 2 that can be part of a gas generator as shown inFig. 1 . This connector 1, shown in detail inFigs. 2 to 5 , includes acasing 3 to be assembled with a cover 4 and a connector position assurance member, thebutton 5. - The
button 5 illustrated inFig. 3 includes awall 10 with flat surface and general rectangular shape and a male connection structure 11 to thecasing 3. Since the plane M perpendicular to thewall 10 and passing through the middle of the long sides of thewall 10 is a plane of symmetry for thebutton 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 rectangularelastic tabs 12 with anaperture 13 close to the short sides of thewall 10 and completely centred in relation to these short sides, together with a pair of legs namedresilient brackets 14 locking to thegas generator 2, completely centred in relation to the short sides, longer and arranged so that they are recessed in relation to thetabs 12. Thetabs 12 are used to latch thebutton 5 to thecasing 3, when the button is in its final position. - On both sides of, and close to, the plane of symmetry, in front of the
brackets 14, fourinsertion guide studs wall 10, on both sides of eachtab 12. - 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 thewall 10, projecting in the same direction. - A pair of legs, so called short-
circuit elimination tabs 15, rectangular in form, longer than thebrackets 14, are placed on the same side as thestuds 16', close to the centre of thewall 10. Thetabs 15 open the short circuit in the complementary element when the connector is inserted completely. - Each
tab 15 includes athin plate 17 close to its free extremity, alug 18 in its middle and alug 19 close to its fixed extremity. Thethin plates 17 are opposite to each other and are in close relationship when thetabs 15 are in their rest position. When the connector is inserted into the complementary element thethin plates 17 engage a rib in the complementary part and thetabs 15 are pushed apart. In the rest position of thetabs 15 thelugs 18 engage with complementary stops on thecasing 3 and thebutton 5 cannot be moved down therefore. When thetabs 15 are in the pushed apart position, that means the connector has entered the complementary element, thelugs 18 do no longer engage the stops on the casing and thebutton 5 is free from this locking feature. - Each
locking bracket 14 of the connection structure 11 shown inFig. 3 includes aflexible body 20, anedge 21 at the free extremity of the bracket and alocking lug 22. - The
locking lug 22 is close to the free extremity of thebracket 14, opposite thegas generator 2 in its assembled state, and has a V profile bordered by twoinclined surfaces button 5 is pushed into its final position in thecasing 3 andcomplementary element 2 thelocking lugs 22 engage and lock into a groove of the complementary element. To achieve this the locking lugs 22 cooperate with thecasing 3. - The cover 4, illustrated in
Fig. 2 , includes, on its side, fourbrackets casing 3 linked to awall 28 covering the electrical connection zone of thecasing 3. - The
casing 3, illustrated inFigs. 1, 2 ,4 and5 , includes afemale connection structure 29 for thebutton 5, amale connection structure 30 for thegas generator 2 and anelectrical connection component 31 generally parallelepipedal in form. - The connection component has two
openings 32 forelectrical conductors 50 shown inFigs. 6 and 7 . - The
female connection structure 29 of thecasing 3 includes twoslots 33 opposite twoslots 34, located at the four corners of this structure, twoopenings 35 of rectangular form, in front of themale connection structure 30 and separated from each other by a thin vertical wall, twoopenings 36, on either side of and above themale connection structure 30 and twoteeth 37, each placed globally at mid-distance from the twoslots - The
male connection structure 30 of thecasing 3 includes anelectrical connection structure 39 to thegas generator 2 and twoelastic locking brackets 38 forming a mechanical connection structure to thegas generator 2. - Each
bracket 38 includes aflexible body 40 and a lockinglug 41 close to the free extremity of thebracket 38, turned towards the internal surface of thegas generator 2 in its assembled state. When the connector is inserted into the complementary element 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 twocentring pads 42 in thegas generator 2, on either side of twovertical slots 43 each including a largeopen underface 43A, each slot being bordered by the walls of theelectrical connection structure 39. A small openlower side 43B also extends perpendicularly to eachlarge face 43A, between these walls. - The
pads 42 illustrated in particular inFig. 2 include ahollow part 44, with the help of which eachbracket 38 can bend freely towards the interior of thecasing 3 and asolid part 45, the upper surface of which is inclined at an angle close to 45°. - The
gas generator 2 as illustrated in section inFigs. 6 and 7 includes twopins 46 maintained in short-circuit before and during the intermediate assembly phases by a short-circuit bar 47 consisting of twoelastic leaves 48, theextreme edge 49 of each of which is in contact with apin 46. A rib is between the leaves in the complementary element. - During assembly of the casing, each
pin 46 is inserted into theelectrical connection structure 39 of thecasing 3 by the shortopen side 43B of theslot 43, eachpin 46 being then electrically connected to aconducting wire 50 by means of aconnection terminal 51 housed in thecasing 3. - During assembly of the
button 5 in a first step thetabs 15 are pushed apart from each other by the rib and with that the button becomes free from the engagement of the lugs with the stops on thecasing 3. When thebutton 5 is further moved to its final position, eachtab 15 of thebutton 5 restrains aleaf 48, as illustrated inFig. 7 , in such a way that itsextreme edge 49 is no longer in contact with the pin 46 (elimination of the short-circuit). - The
flexible body 40 of thebracket 38 includes, on the side closest to thebracket 14 in the assembled state, arecess 55 forming a groove starting at the attachment base of thebracket 38 and ending in asolid portion 52 constituting a stop for around three quarters of thebody 40. - The
bracket 14 of thebutton 5 includes, on the side closest to thebracket 38 of thecasing 3 in the assembled state, anexcrescence 53 of triangular profile on the side of thebracket 14 intended to be opposite thegroove 55 of thebracket 38 of thecasing 3 in the assembled state. The freelower end surface 53A of the excrescence 53 (turned towards thestop 52 in the assembled state) is a straight surface of generally rectangular form, perpendicular to thebracket 14 and to an adjacentstraight surface 53B located beside thetabs 15. - The
surfaces 53B of each excrescence are opposite each other while thesurfaces concave surface 53C, freeing the maximum amount of space in front of theexcrescence 53, the latter projecting slightly past theextreme edge 21. - The principle of mounting the connector on the gas generator will now be described.
-
Fig. 8 shows the first stage, which consists of pre-mounting thebutton 5 in the direction of the arrow A in thecasing 3. Thetabs 15 and thebrackets 14 are introduced into thefemale connection element 29 of the casing respectively throughopenings tabs 15 are also guided into thecasing 3 and thelugs 18 engage the stops in the casing. -
Ribs 25 in thestuds slots bracket 14 of thebutton 5 follows theelectrical connection structure 39 of thecasing 3, offset and slightly set back from thebracket 38 of thecasing 3. The button, although not locked to thecomplementary element 2, remains integral with the casing because of theopenings 13 in thetabs 12 which hold theteeth 37. Ribs on thestuds button 5 on thecasing 3 to be guided to its final position. - This assembly (
button 5 in thecasing 3, lugs 18 engage stops in casing 3) is then introduced, as shown inFig. 9 , into thegas generator 2. In a first stage then thetabs 15 are separated by means ofblades 17 that cooperate with the rib in thecomplementary element 2, which disengages thelugs 18 from the stops. - There are then two possible cases, depending on the state of assembly of the
casing 3 if it is required to place thebutton 5 in final position in the casing 3: - if the
casing 3 is assembled but not locked with thegas generator 2 as illustrated inFig. 9 , thelugs 41 are restrained by the lateral surfaces of thegas generator 2 and thebrackets 38 of thecasing 3 occupy a first "bending" position, so that if an attempt is made to lock thebutton 5 while continuing the mounting of thebutton 5 in the direction of the arrow A, theexcrescence 53 of thebracket 14 of thebutton 5, represented schematically here by a square, follows theguide groove 55 until thesurface 53A is stopped against thesolid portion 52 of thebracket 38, preventing the button from reaching the final position (maintenance of short-circuit) and, - if the
casing 3 is locked into thegas generator 2, as illustrated inFig. 10 , thelug 41 is housed in arecess 54 of a housing of thegas generator 2, forming a locking notch intended to hook onto the lugs of thebrackets brackets 38 of thecasing 3 occupy, because of the elastic recovery of thebody 40, a second position of rest. Thestop 52 then moves aside and releases theexcrescence 53 from thebracket 38 of thebutton 5, thus allowing the button to go to final position and theleaf springs 48 to be separated by thetabs 15 in order to eliminate the short-circuit, as previously described. If thebutton 5 reaches its final position, theexcrescence 53 fits into thehollow part 44 of thepad 42 and theextreme edge 21 of thebracket 14 comes back into contact with the inclined upper surface of thesolid part 45 of thepad 42, stressing thebracket 14 until it stretches (elastic bending towards the exterior) so that the lockinglug 22 of thebracket 14 of thebutton 5 moves into therecess 54 at the side of the lockinglug 41 of thebracket 38 of thecasing 3, as illustrated inFig. 11 , in order to ensure complete locking of the connector 1 on thegas generator 2. - To dismantle, the
button 5 must be pulled to unlock the connector 1. Thebrackets 14 can then be slid over thestuds 42 and, as the separation of the latter reduces, they pass between thecasing 3 and thegas generator 2.
Claims (10)
- Electrical connector (1) in particular an airbag connector for ignition of a pyrotechnic charge, including a casing (3) having a female mechanical connection structure (29) and a male mechanical connection structure (38) for mating with a complementary element (2), specifically a gas generator, including two connection pins (46) which may be short-circuited with each other by a short-circuit element (47), and a button (5) for elimination of the short-circuit intended to be fitted into the said female connection structure (29) and including a first pair of legs (15) for the purpose of eliminating the short-circuit of the connection pins, the said button (5) having a second pair of legs (14) including a stop element (53) on each leg (14) and the said male mechanical connection structure (38) with the said complementary element (2) including a locking element (52) on each of a pair of resilient members (38) which takes, during assembly of the casing (3) to the complementary element (2), a first position, at stop, of the stop element (53) of the said button (5) preventing the said button (5) from reaching a final position in which the latter causes the elimination of the short-circuit by means of its first pair of legs (15), if the said male mechanical connection structure (38) with the complementary element (2) is not yet locked into final position on the latter, and a second position away from the stop element (53) of the said button (5), permitting the said button (5) to reach final position if the said male mechanical connection structure (38) with the complementary element (2) is locked in final position on the latter,
characterised in that the second pair of legs (14) of the button (5) includes a locking lug (22) that locks the button (5) in its final position to the complementary element (2) and further characterized in that each of the first pair of legs (15) includes a lug (18) for preventing movement of the button (5) if the legs (15) are in their rest position and that the legs include opposing thin plates (17) that cooperate with the complementary element (2) when the connector is entered into the complementary element, to move the legs (15) out of their rest position. - Electrical connector according to claim 1, characterised in that the said locking element (52) is associated with a groove (55) guiding the said stop element (53) toward the said locking element (52).
- Electrical connector according to claim 2, characterised in that the said groove (55) is formed by a recess in the flexible body (40) of the said resilient member (38).
- Electrical connector according to one of claims 2 and 3, characterised in that the said groove (55) extends over approximately three quarters of the length of the said flexible body (40).
- Electrical connector according to any one of claims 1 to 4, characterised in that the said stop element (53) has a profile of generally triangular form.
- Electrical connector according to claim 5, characterised in that the stop element includes a lower free surface (53A) which is straight and of general rectangular form and perpendicular to the adjacent free surface (53B) of the stop element closest to the said short-circuit elimination element (15).
- Electrical connector according to any one of claims 1 to 6, characterised in that the said first position corresponds to a bending of the flexible body (40) of the said resilient member (38) resting its lug (41) against a wall of the complementary element (2).
- Electrical connector according to any one of claims 1 to 7, characterised in that the said second position corresponds to an introduction of the said lugs (41) into a recess (54) of the said complementary element (2).
- Electrical connector according to any one of the preceeding claims, characterized in that the button (5) is blocked from moving by the first set of legs (15) when the connector is in a completely unmated position.
- Electrical connector according to claim 9, characterized in that the button (5) is free to move until blocked by the second pair of legs (14) in cooperation with the pair of resilient members (38) when the first set of legs (15) is deflected as the connector is in a partly mated position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0411760A FR2877504A1 (en) | 2004-11-04 | 2004-11-04 | ELECTRICAL CONNECTOR WITH SHAPE INTERFERENCE. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1655810A1 EP1655810A1 (en) | 2006-05-10 |
EP1655810B1 true EP1655810B1 (en) | 2008-03-26 |
Family
ID=34953311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05023933A Active EP1655810B1 (en) | 2004-11-04 | 2005-11-03 | Electrical connector with interengaging shapes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1655810B1 (en) |
AT (1) | ATE390740T1 (en) |
DE (1) | DE602005005603T2 (en) |
ES (1) | ES2302112T3 (en) |
FR (1) | FR2877504A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4903630B2 (en) * | 2007-05-21 | 2012-03-28 | 日本圧着端子製造株式会社 | Connector and electrical connection device |
DE102010029670A1 (en) * | 2010-06-02 | 2011-12-08 | Tyco Electronics Amp Gmbh | Connector assembly for an electrical connector, electrical connector and prefabricated electrical cable |
Family Cites Families (4)
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 (en) * | 2000-11-17 | 2016-05-24 | Framatome Connectors Int | plug connector |
JP4034125B2 (en) * | 2002-06-06 | 2008-01-16 | 日本圧着端子製造株式会社 | Electrical connection device |
US6811424B2 (en) * | 2003-03-26 | 2004-11-02 | Fci Americas Technology, Inc. | Electrical connector having connector position assurance member |
-
2004
- 2004-11-04 FR FR0411760A patent/FR2877504A1/en active Pending
-
2005
- 2005-11-03 EP EP05023933A patent/EP1655810B1/en active Active
- 2005-11-03 ES ES05023933T patent/ES2302112T3/en active Active
- 2005-11-03 DE DE602005005603T patent/DE602005005603T2/en active Active
- 2005-11-03 AT AT05023933T patent/ATE390740T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE602005005603D1 (en) | 2008-05-08 |
EP1655810A1 (en) | 2006-05-10 |
ATE390740T1 (en) | 2008-04-15 |
DE602005005603T2 (en) | 2009-04-30 |
ES2302112T3 (en) | 2008-07-01 |
FR2877504A1 (en) | 2006-05-05 |
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