• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    An electrical connector (100, 400, 500) comprising: a connector housing (101, 401, 501) configured for plugging and locking with a conjugate connector; and a CPA device (130, 430, 530) insertable into the connector housing (101, 401, 501) in an insertion direction (300), configured such that a locking position of the CPA device ( 130, 430, 530) maintains a lock of the connector housing to the conjugate connector. The connector (100, 400, 500) is configured such that insertion of the CPA device (130, 430, 530) into the connector housing (101, 401, 501) in the direction of insertion (300) is locked at a delivery position preventing insertion of the CPA device (130, 430, 530) to the lock position.
    公开号:FR3050078A1
    申请号:FR1653178
    申请日:2016-04-11
    公开日:2017-10-13
    发明作者:De Villeroche Francois Jodon；Xavier Rouillard；Olivier Pamart
    申请人:Tyco Electronics France SAS；
    IPC主号:
    专利说明:

    The invention relates to an electrical connector comprising a position assurance device of the connector, in particular for a safety retaining system.
    Conventionally, safety restraint systems present in particular in seat belts or in motor vehicle airbags comprise pyrotechnic devices that can trigger the tightening of a belt or the swelling of an airbag according to shock information. or vibrations received by sensors of the vehicle. Thus, the electrical cables connecting a control unit of a sensor to a corresponding pyrotechnic device, or primer, generally result in an electrical connector, which is in turn connected to an igniter support, which is therefore a conjugate connector.
    In addition, pyrotechnic connectors can generally incorporate secondary locking systems or connector position assurance devices, or CPA (Connected Position Assurance) devices, to control and maintain a good coupling with the igniter support in an environment that can be regularly subjected to shocks or vibrations, as is typically the case in a motor vehicle.
    It is furthermore known that car manufacturers are increasingly inclined to standardize their connector elements, at least for a given series and / or brand, and thus to provide very precise specifications that require the suppliers of electrical connectors. to provide solutions tailored to standardized elements and particular installation environments, including for sealed applications.
    An object of the present invention is therefore to provide an improved pyrotechnic connector compared to the state of the art, in particular respecting the standards of compactness imposed by the manufacturers of the automotive industry and ensuring on the one hand that the pyrotechnic connector for a restraint system can not be mis-connected to a standard igniter bracket, and secondly a secondary lock is performed as soon as the connector is properly coupled and locked to the igniter bracket. An object of the present invention is also to provide a pyrotechnic connector more compact than the known connectors.
    An object of the present invention is achieved with an electrical connector, in particular a pyrotechnic connector for plugging into a conjugate connector of a safety restraint system, comprising: a connector housing adapted to house electrical terminals to be connected to conjugate electrical terminals of a conjugate connector, configured for plugging and locking with the conjugate connector; and a connector position assurance device, ie CPA device, which can be inserted at least partially into the connector housing in an insertion direction, configured such that when the connector housing is plugged into and locked with a conjugate connector, a locking position of the CPA device maintains locking of the connector housing to the conjugate connector. The connector is configured such that insertion of the CPA device into the connector housing in the direction of insertion is blocked at a delivery position preventing insertion of the CPA device to the locking position, particularly as long as the connector housing is not inserted and / or locked in the connector connector.
    Thus, the present invention makes it possible to prevent the advance of a CPA device in a connector housing as long as the housing is not itself inserted and / or locked in a conjugate connector. In particular, the present invention may also be able to prevent inadvertent removal of the CPA device from the assembled connector. In other words, the present invention makes it possible to block the CPA device in a delivery position, preventing involuntary activation or withdrawal of the CPA device, in particular as long as insertion and / or locking of the connector in a conjugate connector does not occur. occurred. Therefore, the present invention finds a particularly advantageous application in the field of pyrotechnic connectors for safety restraint systems of the automotive industry.
    According to variants of advantageous embodiment of a connector according to the present invention, and in a nonlimiting manner:
    Advantageously, the connector may be further configured so that a stop of the CPA device on the conjugate connector causes an unlocking of the CPA device allowing insertion thereof to the locking position. In other words, the present invention advantageously makes it possible to release the CPA device from its delivery position only by interaction with the conjugate connector, and in particular only if the connector has been sufficiently inserted in the conjugate connector.
    According to a preferred embodiment, the device CPA can comprise at least one locking means that can be inserted into the connector housing in the direction of insertion, and the connector can then be configured so that the locking of the device CPA to the delivery position is achieved by a stop of said at least one locking means against at least one inner zone of the connector housing. Since the locking of the CPA device takes place inside the connector housing, an involuntary passage of the CPA device to the locking position when handling the assembled connector can be prevented or at least greatly limited.
    In an alternative of a preferred embodiment, said at least one locking means of the device CPA may comprise at least one blocking means arranged and configured to abut on said at least one internal zone during insertion of the device. CPA in the connector housing. Thus, the combination of a device CPA comprising locking means, for example one or more locking lances, with at least one locking means, for example locking lugs, suitably arranged on the same locking means, makes it possible to realize both the assurance of the locking of the connector by the CPA device and the locking of the CPA device in the delivery position with the same element of the CPA device, namely the locking means.
    In addition, preferably, said at least one inner area may be a rib projecting from an inner circumference of the connector housing. This configuration has proved particularly advantageous in combination with a device CPA comprising at least one locking means provided with one or more locking means such as locking lugs judiciously arranged.
    In an advantageous variant of a preferred embodiment, an abutment of the at least one locking means of the device CPA on the conjugate connector can cause a resilient deflection of the at least one locking means, allowing the unblocking and the passage of the CPA device. from the delivery position to the lock position. Thus, the same element of the CPA device advantageously makes it possible to block the CPA device in the delivery position when the connector is not yet locked with a conjugate connector, and, if necessary, to ensure that the connector is locked at the same time. conjugate connector.
    In a preferred embodiment, the connector housing may comprise at least one locking means provided for locking the connector housing to the conjugate connector, and the device CPA may be further configured such that, in the locking position, said at least one locking means of the CPA device prevents unlocking of said at least one locking element of the connector housing. As indicated above, the one or more locking means of the device CPA can thus realize several functionalities, namely the blocking device CPA in the delivery position preventing the passage to the locked position, but also, once the locking position is reached, the maintenance or the primary lock or master lock insurance between the connector housing is a conjugate connector.
    In a preferred and advantageous embodiment, the connector may further comprise a cover member attachable to the connector housing so as to at least partially enclose the electrical terminals, wherein the cover member comprises at least one opening forming a passage for insertion of the CPA device into the connector housing. The CPA device can thus also serve to maintain the attachment of the connector housing cover in the locking position. In advantageous embodiments, it is possible to configure the cover member to prevent unintentional disengagement of the CPA device from the delivery position.
    In an advantageous variant, said at least one opening may be configured for the passage of said at least one locking means of the CPA device. According to the variants, it is not necessary to insert the entire CPA device in the connector housing. In other words, the present invention provides for the use, if necessary, of an "external" CPA device which is plugged into the main housing of the connector through a cover element. In order to minimize the space required to receive the CPA device inside the connector housing, only the CPA device locking means can thus be inserted into the housing, to the delivery position, and then unlocked once. (s), to the lock position.
    In another preferred and advantageous control mode, the connector may further comprise a cover member attachable to the connector housing so as to at least partially enclose the electrical terminals, wherein the connector position assurance device is provided integrally with the cover member. It is also possible alternatively to fully integrate the CPA device to the cover member. In this way it is possible to make the connector even more compact.
    In advantageous variants of preferred embodiments, the connector may further comprise at least one sealing means arranged between the CPA device and / or the connector housing and / or the cover member. The present invention therefore also provides applications in a sealed environment and thus allows to isolate the conductive elements of the electrical connection of the external environment once the connector is inserted and locked in a conjugate connector and the CPA device is activated, that is, is in its locking position.
    Therefore, as is apparent from the foregoing, in its many embodiments and advantageous alternatives, the present invention provides for improved configurations of the connector housing and CPA device as compared to the known state of the art systems. art, in particular with respect to known pyrotechnic connectors, by limiting the insertion of the CPA device in the housing to a delivery position, in particular by means of a stop of the CPA device inside the housing. Advancing the CPA device to the position intended to maintain the locking of the connector in file in a conjugate connector can only be achieved by unlocking the CPA device, which is only possible once the connector inserted and locked to the conjugate connector by primary locking elements.
    In addition, advantageous variants of the present invention make it possible to provide that a same locking element of the device CPA fulfills several functionalities at the same time, in particular the setting or the fixing of the device CPA in the delivery position, the release or the release CPA device from the delivery position, and the double lock function of the system once the CPA device is inserted up to its locking position.
    In addition, by its various aspects and variants, the present invention also provides connectors more compact than conventional connectors. It is therefore possible to reduce the size of pyrotechnic connectors. The present invention has furthermore proved to be advantageous not only for standard connector applications but also for waterproof connector applications.
    The various features related to the alternative embodiments of the procedure described above can be combined with one another according to the present invention, so that the above-mentioned advantages can be realized and, where appropriate, reinforced by these combinations. .
    The present invention is particularly adapted to the field of automotive connection, particularly to the connection of pyrotechnic systems, but other advantageous embodiments are possible for electrical systems whose installation in a restricted space imposes standards of compactness similar to those of the pyrotechnic connectors. The invention is also suitable for sealed applications.
    In the following, the invention, its variants and their advantages will be explained in more detail by means of preferred and advantageous embodiments and by relying on the following accompanying figures, in which: FIG. 1 schematically illustrates an example of an embodiment of an electrical connector according to the present invention, in an exploded view; FIG. 2A and 2B schematically illustrate the connector of the embodiment illustrated in FIG. 1 assembled, in a delivery position, in a three-dimensional view (FIG 2A) and in a cross section (FIG 2B); FIG. 3A-3D schematically illustrate various steps of plugging the connector of the embodiment illustrated in FIG. 1 in a conjugate connector, here an igniter support; FIG. 4 schematically illustrates another example of an embodiment of an electrical connector according to the present invention, in an exploded view; FIG. 5A and 5B schematically illustrate the connector of the embodiment illustrated in FIG. 4 assembled, in a delivery position, in a three-dimensional view (FIG 5A) and in a cross section (FIG 5B); FIG. 6 schematically illustrates another example of an embodiment of an electrical connector according to the present invention, in an exploded view; FIGs. 7A and 7B schematically illustrate the connector of the embodiment illustrated in FIG. 6 assembled, in a delivery position, in a three-dimensional view (FIG 7A) and in a cross section (FIG 7B); and FIGs. 8A to 8D schematically illustrate various steps of plugging the connector of the embodiment illustrated in FIG. 6 in a conjugate connector, here an igniter support.
    FIG. 1 illustrates an example of an embodiment of an electrical connector 100 according to the present invention, in an exploded three-dimensional view detailing various components. Connector 100 assembled and in a delivery state, i.e. essentially ready to be plugged into a conjugate connector, is then illustrated in a three-dimensional view in FIG. 2A, then in a cross section in FIG. 2B. In this embodiment, the connector 100 is a pyrotechnic connector designed to be plugged into a standard igniter holder, as will be detailed further. The connector 100 thus makes it possible, in particular, to connect electrical cables 103, 104 coming for example from a control unit of a shock and / or vibration sensor for a safety retaining system to a pyrotechnic charge connected to the igniter support.
    As is apparent from FIGs. 1, 2A and 2B, the connector 100 may comprise a main housing or connector housing 101 with a main portion 105 of substantially parallelepipedic geometry comprising passage openings 115, 116 and housings 107, 108 for receiving and accommodating the cables 103, 104. As also illustrated, the main housing 101 may also comprise a connection portion 106 substantially perpendicular to the main portion 105 and integral thereto, which may be of geometry adapted to be plugged into a standard igniter support, and therefore essentially cylindrical. As illustrated further in relation to FIGs. 3A to 3D, the connecting portion 106 extends according to the dimension shown by the arrow 300 indicating the direction in which the connector 100 is inserted into an igniter support. In addition, one end of the housing 107, 108 may extend into contact openings 109, 110 plunging into the connection portion 106 and capable of receiving contact terminals 113, 114 of terminals 111, 112 crimped at one stripped end of each two cables 103, 104 and conjugate to terminals or pins of a standard igniter support.
    FIGs. 1, 2A and 2B further illustrate that the connecting portion 106 may comprise at least one primary or primary locking element, here two locking lances 117, 118 can be deflected inwardly of the connection portion 106 in a space deflection members 119, 120 for insertion into a conjugate igniter holder, and capable of primary or primary locking, particularly snap-fastening, with locking zones of a standard igniter holder (see also FIG 3C and 3D ).
    It is also apparent from FIGs. 1, 2A and 2B that the connector 100 may comprise a cover 102 that can be fixed to the main housing 101, as shown in particular in FIGS. 2A and 2B of the connector 100 assembled, and can be substantially flat so as to achieve a compact pyrotechnic connector 100. The cover 102 may further comprise locking elements, here the locking lances 121, 122, allowing a locking with associated locking zones 123, 124 of the main housing 101, as well as a locking zone 125 which can be locked by a locking lug 126 associated with the main housing 101. In addition, as illustrated in particular in FIG. 2B, when the cover 102 is fixed to the housing 101, the cover 102 can maintain the terminals 113, 114 in the openings 109, 110 of the connection portion 106.
    Moreover, FIGs. 1, 2A and 2B further illustrate that the connector 100 may comprise a CPA 130 device which, as will be detailed further forward, will make it possible to maintain the locking between the connector 100 and an igniter support. In particular, the device CPA 130 may allow, once activated, that is to say completely inserted in the housing 101 to its locking position (see FIG. 3D), to maintain the locking lances 117, 118 locked to the igniter holder. In addition, the CPA device 130 may advantageously be configured to interact with a coupling section of a standard igniter support (see FIG 3C), which will allow its activation, ie its insertion in the housing 101 to its locking position, as detailed further forward.
    In the embodiment illustrated in FIGS. 1, 2A and 2B, the CPA 130 device may be a separate element of the cover 102. In this case, as also illustrated, the cover 102 may include openings 127, 128 sized and configured for insertion of the CPA 130 device. Additionally, the CPA 130 may include a contact or push surface 131, which is a surface on which a user can press to insert the CPA 130 into the housing 101 of the connector 100, through the openings 127, 128 of the cover 102 when it is fixed to the housing 101, as in the delivery position shown in FIGS. 2A and 2B. At least one locking element may extend from the surface 131, in this case in particular the two locking lances 132, 133, whose end opposite the surface 131 terminates in a lug forming a lance head 134, 135 respective. The openings 127, 128 of the cover 102 can therefore be sized and configured for the insertion of the locking lances 132, 133. Therefore, when passing through the openings 127, 128, the lances 132, 133 are received in spaces 146 , 147 of the connecting portion 106, substantially between an outer portion or circumference 148 and an inner portion or circumference 129 of the connecting portion 106.
    Advantageously, as illustrated in particular in FIGS. 1 and 2B, each locking lance 132, 133 may further comprise one or more lugs 136, 137 or 138, 139 (hidden in the view of FIG.1) respectively, arranged and configured such that the CPA 130 device can only be inserted in the housing 101, more specifically in the connection portion 106, to a delivery position, which is that illustrated in FIGS. 2A and 2B. Thus, in order to prevent the CPA 130 device from being activated, that is to say from reaching its locking position, before the connector 100 is plugged in and correctly locked in an igniter support, an insertion of the device CPA 130, in particular of its locking elements, here the locking lances 132, 133, in the connection portion 106 of the housing 101 will be blocked at the delivery position shown by a stop within the connection portion 106. This is possible for example by providing one or ribs 144, 145 radially outwardly projecting on a circumference or internal portion 129 of the connection portion 106, on which will abut the lugs 136, 137 on one side and the lugs 138, 139 on the other side (see FIG 2B). In its delivery position, the CPA 130 device can not be inserted further into the housing 101, in particular in the connection portion 106. In addition, it is also possible to prevent the CPA 130 device from leaving the party connection 106 when inserted to its delivery position. This is possible for example by providing one or more lugs 140, 141, 142, 143 arranged laterally on the locking lances 132, 133 of the CPA 130 device, as shown in FIG. 1, and resiliently deflectable to allow the insertion of the lances 132, 133 through the openings 127, 128, and which may further be arranged and configured to abut the lid 102 when attempting to removing the CPA 130 device from the assembled connector 100.
    In the following, FIGs. 3A-3D will serve as a reference for describing the kinematics of an insertion and locking sequence of the connector 100 in a conjugate connector, here the igniter carrier 200, which may be a conventional igniter carrier used by a car manufacturer in a standard manner. the frame of a safety restraint system such as an airbag or a seat belt of a motor vehicle. For the sake of simplicity, FIGs. 3A to 3D show a sectional view similar to that of FIG. 2B. All the elements and characteristics of the connector 100 as described with reference to FIGS. 1, 2A and 2B are therefore repeated in FIGS. 3A to 3D.
    Regarding the igniter support 200, as is apparent from FIGS. 3A to 3D, those skilled in the art will be able to identify a base portion 201 that can be, for example, substantially cylindrical and comprising, on an inner circumference, a groove defining a locking zone 203 commonly provided in the direction of the edge 207 of the base portion 201, slightly below the edge 207 in the orientation of FIGS. 3A to 3D, for locking with locking elements of a pyrotechnic connector. In addition, conventionally, contact pins 204, 205 project from the bottom of the base portion 201 and may for example be connected to a pyrotechnic charge. Thus, it is intended that conjoined contact terminals or pins of a pyrotechnic connector come into electrical contact with the contact pins 204, 205. Still conventionally, the igniter holder 200 also comprises a retaining ring 202 housed in the housing. base portion 201 and can therefore also be substantially cylindrical, and which is provided to ensure, together with the base portion 201, the retention of a pyrotechnic connector. The pyrotechnic connector 100 according to one aspect of the present invention is therefore configured for plugging and locking in such a conventional igniter holder.
    As illustrated throughout FIGs. 3A to 3D, the insertion of the connector 100, and in particular of its connection portion 106, into the igniter support 200 may be preferably in a direction of insertion shown by the arrow 300.
    As first illustrated in FIG. 3A, to insert the connector 100 in the igniter holder 200 in the direction of insertion 300, the connection portion 106 is presented facing the igniter support 200 to be plugged into the retaining ring 202 and between the latter and the base portion 201. The contact pins 204, 205 of the igniter support 200 are presented at the openings 109, 110 in which are housed the contact terminals 113, 114 homologous to the sense connector. The connector 100 is presented in its delivery state described above, in particular with the device CPA 130 in the delivery position, that is to say essentially locked in translation, firstly by the abutment of the pins 136, 137 and 138, 139 on the rib or ribs 144, 145 projecting from the internal portion or circumference 129 of the connecting portion 106, and secondly by the abutment of the pins, 140, 141 and 142, 143 on the cover 102 The CPA 130 device can not be activated before plugging. At this stage, the end of the connection portion 106 may have just passed the contact section or bearing surface 206 of the retaining ring 202, and there is no electrical contact between the terminals of the retaining ring 202 yet. contact 113, 114 and the contact pins 204, 205.
    FIG. 3B illustrates a later step in which the connector 100 is further inserted along the direction 300 into the igniter holder 200. As apparent from FIG. 3B, at this stage, the locking lances 117, 118 are deflected, in particular resiliently, towards the inside of the connection portion 106, that is, they are deflected in the spaces 119, 120, by interaction with the edge 207 200. An electrical contact is initiated because the contact pins 204, 205 have advanced into the openings 109, 110 and are partially inserted into the contact terminals 113, 114. The CPA 130 device, however, is still blocked. in its delivery position described above and therefore can not advance to its locking position. The CPA 130 device, in particular the lance heads 134, 135 of its locking lances 132, 133, has now just come into contact with the contact section 206 of the retaining ring 202 of the igniter holder 200.
    FIG. 3C illustrates a later step in which connector 100 is further inserted, still in direction 300, into igniter holder 200. Contact pins 204, 205 have therefore advanced further into contact terminals 113, 114. Now the return at their delivery position the locking lances 117, 118, which have surmounted the edge 207 of the igniter holder 200, provides the primary or primary locking of the connector 100 to the igniter holder 200, since the locking lances 117, 118 are housed in the locking zone 203. The release or release function of the CPA device 130 will now be described. As detailed in the two dotted-circled zones, the thrust of the lance heads 134, 135 of the CPA 130 device on the contact section 206 has made it possible to deflect, in particular resiliently, the locking lances 132, 133 radially towards the liner. outside the connector 130 in the spaces 146, 147 so that the respective lugs 136, 137 and 138, 139 are disengaged from their respective abutment against the rib or ribs 144, 145 on the inner circumference 129 of the connecting portion 106 In other words, the CPA 130 device is unlocked, that is to say freed from its delivery position and will finally be able to advance to its locking position (see FIG. 3D).
    As is apparent from FIG. 3D, after continuing the insertion movement of the CPA 130 device released from its delivery position, as described with reference to FIG. 3C, the CPA 130 device could thus be inserted into the housing 101 to its locking position. The surface opposite to the contact surface 131 of the CPA 130 device may abut against the cover 102, so that the locking lances 132, 133 of the CPA 130 device are essentially inserted at the maximum in the connection portion 106. resilient return to their essentially rest position of the locking lances 132, 133, whose lugs 136, 137 and 138, 139 have surmounted the rib or ribs 144, 145 on the inner circumference 129 of the connection portion 106, now allows the locking lances 132, 133 of the CPA 130 device are now housed behind the locking lances 117, 118 of the connection portion in the locking zone 203 and thus to prevent their opening and consequently a disconnection of the system. In addition, the lance heads 134, 135 of the CPA 130 device hook the retaining ring 202 below the contact section 206. The CPA device 130 thus performs a double locking function.
    Therefore, in an advantageous variant of a preferred embodiment of the present invention, the locking elements of the CPA device 130, here the locking lances 132, 133 can fulfill several functions at the same time. On the one hand, the locking elements of the CPA device 130 can perform a setting function or fixing, corresponding to the attachment of the CPA 130 device in the delivery position, that is to say that the CPA 130 device does not can not be activated before the connector 100 (or its connection portion 106) is correctly inserted into the igniter holder 200. On the other hand, these same locking elements can perform the release or release function of the CPA device 130 of the delivery position, as well as the double locking function of the system once the CPA device 130 is inserted to its locking position.
    FIG. 4 illustrates another example of an embodiment of an electrical connector 400 according to the present invention, in an exploded three-dimensional view detailing various components. The assembled connector 400 and in a delivery state, i.e. substantially ready to be plugged into a conjugate connector, is then illustrated in a three-dimensional view in FIG. 5A, then in a cross section in FIG. 5B. In this other embodiment, the connector 400 is a pyrotechnic connector intended to be plugged into a standard igniter holder in a sealed application, as will be detailed further. The connector 400 thus takes up most of the characteristics of the connector 100 detailed above, which may therefore possibly be omitted in the following if necessary in order to focus on the particular characteristics of the connector 400. The connector 400 thus also makes it possible to connect electrical cables 403, 404 for example from a control unit of a shock and / or vibration sensor for a safety retaining system with a pyrotechnic charge connected to the igniter support.
    As is apparent from FIGs. 4, 5A and 5B, the connector 400 may therefore comprise a main housing or connector housing 401, a cover 402, and a CPA 430 device having substantially similar functionality to those previously described. However, in order to make the connector 400 even more compact than the connector 100, the connector housing 401 here essentially consists only of the connection portion 406, and the cables 403, 404 crimped with terminals 411, 412 comprising The contact terminals 413, 414 are now inserted through apertures 415, 416 of a receiving portion 405 provided directly on the cover 402, and can be arranged substantially perpendicular to the main body of the cover 402, that is, that is substantially perpendicular to the direction of insertion which is essentially the same as the direction in which the CPA 430 is assembled to the cover 402 and the housing 401. In addition, to ensure a seal level and / or or desired isolation from the outside environment, the cables 403, 404 may also include suitable annular seals 451, 452 provide a seal at the openings 415, 416 of the receiving portion 405 of the lid 402. Apart from the receiving portion 405, the cover 402 is here adapted to the geometry of connecting portion 406 and thus essentially cylindrical as shown in FIG. 4, 5A and 5B.
    Moreover, the cover 402 may further comprise locking elements, here the lugs 421, 422, visible in FIGS. 4, 5A and 5B, allowing locking with locking zones 440, 441 this time associated with the CPA device 430 rather than the main housing 401. The cover 402 may further comprise at least one internal locking element (not illustrated) allowing, once the cover 402 mounted on the housing 401, a locking with the lug 426 of the connection portion 406. In addition for sealing application, an annular seal 454 may be provided on an inner circumference of the cover 402 so as to ensure a sealing and / or desired isolation from the external environment when the connector 400 is plugged into an igniter support. As also illustrated, another annular seal 453 may also be provided on an inner circumference of the CPA 430 to provide a desired seal level between the CPA 430 and the lid 402.
    As also illustrated in FIGs. 4, 5A and 5B, the connection portion 406 of the main housing 401 can essentially assume all the features previously described for the connection portion 106 of the connector 100. Thus, when the cover 402 is mounted on the housing 401, the cables 403, 404 are received in the housings 407, 408, and the contact terminals 413, 414 are housed in the contact openings 409, 410 dipping in the connection part 406. In this variant, the holding in place of the terminals 411 , 412 and their contact terminals 413, 414 can be realized by means of the terminal position assurance device 450, or TPA (Terminal Position Assurance) device, visible in the exploded view of the FIG . 4, then in the delivery state of the connector 400 shown in FIG. 5B. In addition, the connection portion 406 may comprise at least one main or primary locking element, here two locking lances 417, 418, in a manner similar to that described for the previous embodiment, which can therefore be reflected towards the interior of the connection portion 406 in the respective spaces 419, 420 to allow insertion into an igniter holder and capable of primary or primary locking therewith in a manner similar to that described in the previous embodiment embodiment with reference to FIGS. 3C and 3D.
    As is also apparent from FIGs. 4, 5A and 5B, in this embodiment, the device CPA 430 has the characteristics and advantages described in relation with the device CPA 130 of the preceding embodiment, in particular with regard to the functionalities fulfilled in particular by its locking elements 432. , 433, namely the setting or fixing function in the delivery position, the release or release function of the device CPA 430 from the delivery position, in particular by means of a stop on the locking ring of a support igniter, as well as the dual locking function of the system once the CPA 430 device is inserted to its locking position. In particular, the device CPA 430 may allow, once activated, that is to say completely inserted in the housing 401 to its locking position (similar to FIG. 3D), to maintain the locking lances 417 , 418 locked to the igniter support.
    In addition, in a similar manner illustrated with reference to FIGS. 1, 2A and 2B, the CPA 430 device of the embodiment illustrated with reference to FIGS. 4, 5A and 5B may also be a separate element of the cover 402. In the present embodiment, while the cover 431 of the CPA device 430 covers the cover 402, which is visible in particular in FIGS. 5A and 5B, the locking lances 432, 433 of the CPA device 430 are inserted into the cover 402 through respective apertures 427, 428 (FIGURE 5B) so as to be received in spaces 446, 447 between the outer portion 448 and an inner portion 429 of the connection portion 406 of the housing 401. Here, the locking lances 432, 433 therefore have the same characteristics and advantages as those described above with reference to the first embodiment. They therefore also comprise, respectively, a lance head 434, 435 and lugs 436, 437 and 438, 439 similar to those of the first embodiment.
    Thus, it follows from the foregoing that, as long as the connector 400 is not plugged in and locked by the locking lances 417, 418 in a conjugate lug carrier, the CPA 430 device can only be inserted into the connection portion 406. of the housing 401 to a delivery position, which is that illustrated more particularly in FIG. 5B. This is again possible by the configuration of the CPA 430 device and in particular the internal portion 429 of the connection portion 406 of the housing 401, which comprises elements forming a stop for the pins 436, 437 and 438, 439, here again one or more ribs 444, 445 protruding substantially radially outwardly from the inner circumference 429. In this embodiment, the delivery position can therefore be limited firstly, in the direction of insertion, by the abutment. pins 436, 437 and 438, 439 on the respective ribs 444, 445 of the inner portion 429, and secondly, in the direction of withdrawal, namely the direction opposite to the direction of insertion, by the abutment of the zones. 440, 441 on the lugs 421, 422 of the cover 402 (FIG 5B).
    Once the connector 400 assembled and in its delivery state, that is to say in particular with the CPA 430 device blocked in its delivery position, the kinematics of a sequence of insertion and locking of the connector 400 in a connector conjugate, for example an igniter support such as the igniter support 200 described above, can be completely analogous to what has been described in relation to FIG. 3A to 3D, except that a desired level of sealing and / or isolation is now achieved by means of different sealing elements, here in particular seals 451, 452, 453, 454.
    FIG. 6 illustrates another example of an embodiment of an electrical connector 500 according to the present invention, in an exploded three-dimensional view detailing various components. Connector 500 assembled and in a delivery state, i.e. essentially ready to be plugged into a conjugate connector, is then illustrated in a three-dimensional view in FIG. 7A, then in a cross section in FIG. 7B. In this other embodiment, the connector 500 is a pyrotechnic connector intended to be plugged into a standard igniter holder in a sealed application, as will be detailed further. The connector 500 thus takes up most of the characteristics of the connectors 100 and 400 detailed above, which may therefore possibly be omitted in the following if necessary in order to focus on the particular characteristics of the connector 500. The connector 500 thus also makes it possible to connect electrical cables 503, 504 coming for example from a control unit of a shock and / or vibration sensor for a safety retaining system with a pyrotechnic charge connected to the igniter support.
    A notable difference with respect to the previous embodiments which will be detailed below is the integration of the CPA 530 device with the cover 502, which is apparent from FIGS. 6 and 7A is particularly of FIG. 7B. In all cases, the features described above are essentially all included in the present embodiment, and the connector 500 is further made even more compact than the connectors 100 and 400 because the CPA device 530 is provided integrally with the cover 502. In addition, the housing 501 of the connector 500 comprises a receiving portion 505, for example corresponding to the portion 101 of the connector 100, but this time arranged in an extension of the connection portion 506 and therefore also arranged in the insertion direction of the connector 500, which is also the main direction of assembly of the lid / CPA device 502, 530 with the housing 501. In this embodiment, the cables 503, 504 crimped with terminals 511, 512 comprising contact terminals 513, 514 are thus inserted through the openings 515, 516 of the receiving part 405 in the same direction of insertion as the material read by the arrow 300 indicating the insertion direction of the connector 500 in a conjugate igniter holder (see FIG. 8A to 8D). Like the connector 400 and as also illustrated in particular in FIGS. 6 and 7B, in order to guarantee a desired level of sealing and / or isolation with respect to the external environment, in the connector 500 the cables 503, 504 may also comprise annular seals 551, 552 adapted to sealing at the openings 515, 516 of the receiving portion 505 of the housing 501 of the connector 500. Similarly, an annular seal 554 may be provided on an inner circumference of the cover portion 502 of the lid / device assembly CPA 502, 530 so as to guarantee a sealing and / or a desired insulation with respect to the external environment when the connector 500 is plugged into an igniter support, and another annular seal 553 can also be provided around the receiving portion 505, aperture level 515, 516 to provide a desired level of sealing between the housing 501 and the cover assembly. e / CPA device 502, 530.
    As also illustrated in FIGs. 6, 7A and 7B, the connection portion 506 of the housing 501 can again essentially take up all the features that have been previously described for the connection portions 106 and 406 of the connectors 100 and 400. Here, the compact configuration of the connector 500 is such that, contrary to the previous embodiments, the contact terminals 413, 414 can remain aligned with the body of the terminals 511, 512 to be received in the housings 507, 508 of the receiving part 505. In other words, the terminals of contact 513, 514 are simply housed in the contact openings 509, 510 in extension of the housings 507, 508 plunging into the connection portion 506. In this variant, in a similar manner to the embodiment illustrated with reference to FIGS. 4, 5A and 5B, the holding in place of the contact terminals 513, 514 can also be achieved by means of a TPA device 550 which can be inserted here by a lateral opening 555 of the connection part 506. Finally, the connection part 506 may comprise at least one main or primary locking element, here two locking lances 517, 518, similarly to what has been described above and can therefore be resiliently deflected towards the inside of the connection portion 506 in the respective spaces 519, 520 to allow insertion into an igniter holder and capable of primary or primary locking therewith once returned to their delivery position.
    As is apparent in particular from FIG. 7B, in this embodiment, the CPA device 530 integrated in the cover 502 incorporates the features and advantages described in relation to the devices CPA 130 and 430 of the preceding embodiments. The CPA device 530 therefore comprises in particular at least one locking element having the same functionalities as that described above. It thus comprises in particular locking elements 532, 533 which can perform the function of setting or fixing in the delivery position, the function of release or release of the device CPA 530 from the delivery position, in particular by means of a stop on the locking ring of an igniter support, as well as the double locking function of the system once the CPA device 530 is inserted to its locking position. In particular, the CPA 530 device may also, once activated, that is to say completely inserted in the housing 501 to its locking position (see FIG 8D), to maintain the locking lances 517 , 518 locked to the igniter holder. Unlike the previous embodiments and as is apparent in particular from FIG. 7B, since the CPA device 530 is integrated with the cover 502, the locking lances 532, 533 of the CPA device 530 are inserted directly into the spaces 546, 547 between the outer portion 548 and an inner portion 529 of the connection portion 506. In addition, since the locking lances 532, 533 have the same characteristics and advantages as those described above, they can also comprise, respectively, a lance head 534, 535 and lugs similar to those of previous embodiments, such as the lugs 537, 538 visible on the cross section of FIG. 7B.
    Still in a manner analogous to the embodiments described above, as long as the connector 500 is not in file is locked by the locking lances 517, 518 in a conjugate igniter holder, the lid / device assembly CPA 502, 530 can be only mounted on the housing 501 so that the part forming the CPA device 530 advances to a delivery position, illustrated more particularly in FIG. 7B. This is again possible by the respective configurations of the part forming the CPA device 530 and the inner circumference 529 of the connection portion 506 of the housing 501. Indeed, the inner portion 529 can here also include elements forming a stop at least for pins 537, 538, here again one or ribs 544, 545 projecting substantially radially outwardly. It is therefore also possible to limit the insertion of the part forming the CPA 530 device to the delivery position by blocking an advance in the direction of insertion by the abutment of the lugs 537, 538 on the ribs 544, 545 (FIG. 7B).
    In the following, FIGs. 8A to 8D will serve as a reference for describing the kinematics of an insertion and locking sequence of the connector 500 in a conjugate connector which may be a conventional igniter carrier, for example the igniter carrier 200 previously described. The kinematics of insertion and locking of the connector 500 can therefore be completely analogous to what has been described in relation to FIGS. 3A to 3D, except that the cover 502 and the CPA device 530 are integrated with each other, and, as for the connector 400 of the embodiment illustrated with reference to FIGS. 4, 5A and 5B, that a desired level of sealing and / or isolation is now achieved by means of different sealing elements, here in particular seals 551, 552, 553, 554 For the sake of simplicity, FIGs. 8A to 8D also show a sectional view similar to that of FIG. 7B illustrating the delivery position. All the elements and features of the connector 500 as described with reference to FIGS. 6, 7A and 7B are therefore repeated in FIGS. 8A to 8D. The step illustrated in FIG. 8A represents a step that could be considered as intermediate between what has been described in the first embodiment with reference to FIGS. 3A and 3B. The connector 500 is therefore presented for insertion into the igniter holder 200 in the insertion direction 300. Here, an electrical contact is just established between the pins 204, 205 and the terminals 513, 514, and the locking lances 517. , 518 just come into contact with the edge 207 of the base portion 201 of the igniter support 200 and are still in their delivery position, that is to say at rest. As in the previous embodiments, the CPA device 530, or in fact here the lid / CPA device assembly 502, 530, is locked in the delivery position and can not advance to a locking position. In other words, the lock guarantee can not be activated at this stage.
    FIG. 8B illustrates a later step in which the connector 500 is further inserted along the direction 300 into the igniter holder 200. This step is substantially similar to that described with reference to FIG. 3B. The locking lances 517, 518 are now now deflected to the edge 207 of the igniter support 200, particularly resiliently, towards the inside of the connection portion 506 in the spaces 519, 520. The cover assembly / CPA device 502, 530 is still stuck in its delivery position. The lance heads 534, 535 of the locking lances 532, 533 are about to come into contact with the section 206 of the retaining ring 202 of the igniter holder 200.
    FIG. 8C illustrates a later step in which connector 500 is further inserted, still in the direction 300, into the igniter holder 200 is substantially similar to that described with reference to FIG. 3C. The elastic return to their delivery position of the locking lances 517, 518 is about to be realized. The release or release function of the locking elements 530, 533 of the part forming the CPA device 530 can be initiated. As detailed in the two dotted areas encircled, the thrust of the lance heads 534, 535 on the contact section 206 will allow to deflect, particularly resiliently, the locking lances 532, 533 radially outwardly of the connector 530 in the spaces 546, 547 so that the lugs 537, 538 will be disengaged from their respective abutment against the rib or ribs 544, 545 on the inner circumference 529 of the connecting portion 506. In other words, the portion forming the CPA 530 device is about to be unlocked.
    Finally, FIG. 8D represents a lock state of the system similar to that described with reference to FIG. 3D. Thus, after continuation of the insertion movement of the connector 500, the lid integral part / CPA device 502, 530, which has been released from its delivery position as previously described, could therefore be plugged into the housing 101 to its position. locking. The elastic return to their essentially rest position of the locking lances 532, 533, whose lugs 537, 538 have surmounted the rib or ribs 544, 545 on the internal circumference 529 of the connecting part 506, now makes it possible to perform the secondary locking of the connector 500 to the igniter support 200. The locking lances 532, 533 of the cover / device assembly CPA 502, 530 are now housed behind the locking lances 517, 518 of the housing 501 so as to wedge these in the locking zone 203 and thus to prevent their opening and therefore a disconnection of the system. In addition, the lance heads 534, 535 hook the retaining ring 202 below the contact section 206. The part forming the CPA device 530 thus performs a double locking function. In addition, the sealing of the locked system with respect to the environment can be ensured: by the seal 554 between the cover portion 502 and the base portion 201 of the igniter support 200; by the seal 553 between the cover portion 500 and the housing 501; and by seals 551, 552 between cables 503, 504 and housing 501.
    Therefore, by its various aspects and variants, the present invention provides respective configurations of the connector housing and CPA improved with respect to known systems of the state of the art, in particular with respect to known pyrotechnic connectors, by limiting the insertion of the CPA device into the housing has a delivery position, including by means of a stop CPA device inside the housing. Advancing the CPA device to the position intended to maintain the locking of the connector in file in a conjugate connector can only be achieved by unlocking the CPA device, which is only possible once the connector inserted and locked to the conjugate connector by primary locking elements.
    In addition, advantageous variants of the present invention make it possible to provide that a same locking element of the device CPA fulfills several functionalities at the same time, in particular the setting or the fixing of the device CPA in the delivery position, the release or the release CPA device from the delivery position, and the double lock function of the system once the CPA device is inserted up to its locking position.
    In addition, by its various aspects and variants, the present invention also provides connectors more compact than conventional connectors. It is therefore possible to reduce the size of pyrotechnic connectors. The present invention has furthermore proved to be advantageous not only for standard connector applications but also for waterproof connector applications. Those skilled in the art will understand, as has been described, that the various features related to the variants of the embodiments described above can be combined with one another to achieve other advantageous variants of embodiments of the present invention. .
    REFERENCE SIGNS 100 pyrotechnic connector 101 main housing 102 cover 103 cable 104 cable 105 main part 106 connection part 107 housing 108 housing 109 contact opening 110 contact opening 111 electrical terminal 112 electrical terminal 113 contact terminal 114 contact terminal 115 opening cable passage 116 cable entry opening 117 locking lance 118 locking lance 119 deflection gap 120 deflection gap 121 locking lance 122 locking lance 123 locking zone 124 locking zone 125 locking zone 126 locking pin 127 opening 128 opening 129 internal part
    130 CPA 131 device contact / thrust surface 132 locking lance 133 locking lance 134 spear head 135 spear head 136 spur 137 spur 138 spur 139 spur 140 spur 141 spur 142 spur 143 spur 144 rib 145 rib 146 space 147 space 148 outer part 200 support igniter 201 base part 202 retaining ring 203 locking zone 204 contact pin 205 contact pin 206 contact section / bearing surface 207 edge 300 insertion direction 400 pyrotechnic connector 401 main housing 402 cover 403 cable 404 cable 405 receiving part 406 connecting part 407 housing 408 housing 409 contact opening 410 contact opening 411 electrical terminal 412 electrical terminal 413 contact terminal 414 contact terminal 415 cable opening opening 416 cable opening opening 417 418 launches locking spool 419 spaces allowing deflection 420 space allowing deflection 421 spur 422 latch 426 latch lock 427 opening 428 opening 429 inner portion
    430 device CPA 431 cap 432 lance lock 433 lance lock 434 lance head 435 lance head 436 pin 437 pin 438 pin 439 pin 440 locking element 441 locking element 444 rib 445 rib 446 space 447 space 448 outer part 450 device ΤΡΑ 451 gasket 452 gasket 453 gasket 454 gasket 500 pyrotechnic connector 501 main housing 502 cover 503 cable 504 cable 505 receiving part 506 connecting part 507 housing 508 housing 509 contact opening 510 contact opening 511 electrical terminal 512 electrical terminal 513 contact terminal 514 contact terminal 515 cable opening 516 cable opening 517 locking lance 518 locking lance 519 space allowing deflection 520 space allowing deflection 529 internal part
    530 device CPA 532 lance lock 533 lance lock 534 lance head 535 lance head 537 pin 538 pin 544 rib 545 rib 546 space 547 space 548 outer part
    550 device TPA 551 seal 552 seal 553 seal 554 seal
    555 opening for TPA
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    An electrical connector (100, 400, 500), in particular a pyrotechnic connector for insertion into a conjugate connector of a safety restraint system, comprising: a connector housing (101, 401, 501) adapted to house terminals electrodes for connection to conjugate electrical terminals of a conjugate connector configured for plugging and locking with the conjugate connector; and a connector position assurance device (130, 430, 530), or CPA device, which can be inserted at least partially into the connector housing (101, 401, 501) in an insertion direction (300), configured so that when the connector housing (101, 401, 501) is plugged into and locked with a mating connector, a locking position of the CPA device (130, 430, 530) maintains the locking of the connector housing at conjugate connector; characterized in that the connector (100, 400, 500) is configured such that insertion of the CPA device (130, 430, 530) into the connector housing (101, 401, 501) in the direction of insertion (300) is locked at a delivery position preventing insertion of the CPA device (130, 430, 530) to the lock position, particularly as long as the connector housing (101, 401, 501) is not inserted and / or locked in the conjugate connector.
    [2" id="c-fr-0002]
    The connector (100, 400, 500) according to claim 1, wherein the connector (100, 400, 500) is further configured such that a stop of the CPA device (130, 430, 530) on the connector conjugate causes an unblocking of the CPA device (130, 430, 530) allowing insertion thereof to the locking position.
    [3" id="c-fr-0003]
    3. Connector (100, 400, 500) according to one of claims 1 or 2, wherein the CPA device (130, 430, 530) comprises at least one locking means (132, 133, 432, 433, 532, 533) insertable into the connector housing (101, 401, 501) in the insertion direction (300), and wherein the connector (100, 400, 500) is further configured such that CPA device (130, 430, 530) at the delivery position is provided by a stop of said at least one locking means (132, 133; 432, 433; 532, 533) against at least one inner zone (144, 145; 444, 445, 544, 545) of the connector housing (101, 401, 501).
    [4" id="c-fr-0004]
    The connector (100, 400, 500) according to claim 3, wherein said at least one locking means (132, 133, 432, 433, 532, 533) of the CPA device (130, 430, 530) comprises at least locking means (136-139; 436-439; 537-538) arranged and configured to abut on said at least one inner zone (144,144; 444,445; 544,545) upon insertion of the CPA device (130, 430, 530) in the connector housing (101, 401, 501).
    [5" id="c-fr-0005]
    The connector (100, 400, 500) according to one of claims 3 or 4, wherein said at least one inner zone (144, 145; 444, 445; 544, 545) is a circumferentially protruding rib. internal (129, 429, 529) of the connector housing (101, 401, 501).
    [6" id="c-fr-0006]
    The connector (100, 400, 500) according to any one of claims 3 to 5, in combination with claim 2, wherein a stop of said at least one locking means (132, 133, 432, 433, 532, 533) of the CPA device (130, 430, 530) on the conjugate connector results in a resilient deflection of said at least one locking means (132, 133; 432, 433; 532, 533) permitting unblocking and passing of the CPA device (130, 430, 530) from the delivery position to the lock position.
    [7" id="c-fr-0007]
    The connector (100, 400, 500) according to any one of the preceding claims, in combination with claim 3, wherein the connector housing (101, 401, 501) comprises at least one locking means (117, 118 417, 418, 517, 518) provided for locking the connector housing (101, 401, 501) to the conjugate connector, and wherein the CPA device (130, 430, 530) is further configured so that, in the locking position, said at least one locking means (132, 133; 432, 433; 532, 533) of the CPA device (130, 430, 530) prevents unlocking of said at least one locking member (117, 118; 417, 418, 517, 518) of the connector housing (101, 401, 501).
    [8" id="c-fr-0008]
    The connector (100, 400) according to any one of the preceding claims, further comprising a cover member (102, 402) attachable to the connector housing (101, 401, 501) so as to enclose at least partially the electrical terminals, wherein the cover member (102, 402) comprises at least one opening (127, 128; 427, 428) forming a passage for insertion of the CPA device (130, 430) into the connector housing ( 101, 401, 501).
    [9" id="c-fr-0009]
    The connector (100, 400) according to claim 8, in combination with claim 3, wherein said at least one aperture (127, 128; 427, 428) is configured for passage of said at least one locking means (132). , 133, 432, 433) of the CPA device (130, 430).
    [10" id="c-fr-0010]
    The connector (500) according to any one of claims 1 to 7, further comprising a cover member (502) attachable to the connector housing (101, 401, 501) so as to at least partially enclose the terminals in which the CPA device (530) is integrally provided with the cover member (502).
    [11" id="c-fr-0011]
    The connector (400, 500) according to any one of the preceding claims, further comprising at least one sealing means (453, 454, 553, 554) arranged between the CPA device (430, 530) and / or the connector housing (401, 501) and / or the cover member (402, 502).
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    同族专利:
    公开号 | 公开日
    EP3232517A1|2017-10-18|
    US20170294742A1|2017-10-12|
    EP3232517B1|2019-01-02|
    US9941636B2|2018-04-10|
    FR3050078B1|2019-11-08|
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    法律状态:
    2017-04-26| PLFP| Fee payment|Year of fee payment: 2 |
    2017-10-13| PLSC| Publication of the preliminary search report|Effective date: 20171013 |
    2018-04-11| PLFP| Fee payment|Year of fee payment: 3 |
    2019-03-13| PLFP| Fee payment|Year of fee payment: 4 |
    2020-03-12| PLFP| Fee payment|Year of fee payment: 5 |
    2021-03-10| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1653178|2016-04-11|
    FR1653178A|FR3050078B1|2016-04-11|2016-04-11|PYROTECHNIC CONNECTOR|FR1653178A| FR3050078B1|2016-04-11|2016-04-11|PYROTECHNIC CONNECTOR|
    EP17166019.4A| EP3232517B1|2016-04-11|2017-04-11|Pyrotechnic connector|
    US15/484,629| US9941636B2|2016-04-11|2017-04-11|Pyrotechnic connector|
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