WO2015036611A1 - Connecteur électrique pour un système de retenue de sécurité - Google Patents

Connecteur électrique pour un système de retenue de sécurité Download PDF

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Publication number
WO2015036611A1
WO2015036611A1 PCT/EP2014/069684 EP2014069684W WO2015036611A1 WO 2015036611 A1 WO2015036611 A1 WO 2015036611A1 EP 2014069684 W EP2014069684 W EP 2014069684W WO 2015036611 A1 WO2015036611 A1 WO 2015036611A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
locking
spring
state
electrical connector
Prior art date
Application number
PCT/EP2014/069684
Other languages
English (en)
Inventor
Olivier Pamart
Eric Chatelus
François Jodon de Villeroche
Steven Lord
Xavier Rouillard
Original Assignee
Tyco Electronics France Sas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR1358887A external-priority patent/FR3010841B1/fr
Priority claimed from FR1361573A external-priority patent/FR3013912B1/fr
Priority claimed from EP14290152.9A external-priority patent/EP2876745B1/fr
Application filed by Tyco Electronics France Sas filed Critical Tyco Electronics France Sas
Priority to CN201480050867.6A priority Critical patent/CN105531886B/zh
Publication of WO2015036611A1 publication Critical patent/WO2015036611A1/fr

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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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • H01R13/6273—Latching means integral with the housing comprising two latching arms
    • 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
    • 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
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to an electrical connector for a pluggable connection, in particular a pyrotechnic connector, or a squib connector, for a safety restraint system of a motor vehicle, making it possible to automatically prevent an incorrect connection with a mating connector.
  • the safety restraint systems present in particular in motor vehicle seat belts or air bags comprise pyrotechnic devices that can activate the locking of the belt or the inflation of the airbag based on impact or vibration information received by sensors of the vehicle.
  • the electrical cables connecting a control unit to a corresponding pyrotechnic device, or squib end in an electrical connector, which is generally connected to a mating connector receptacle, or igniter carrier, sometimes also called squib carrier hereinafter.
  • pyrotechnic connectors also called squib connectors hereinafter, can incorporate secondary locking systems or connector position assurance (CPA) devices, making it possible to monitor and ensure the maintenance of proper coupling with the igniter carrier in an environment that may regularly undergo impacts or vibrations, as is typically the case in a motor vehicle.
  • CPA connector position assurance
  • Pyrotechnic connectors whose secondary locking can use a spring making it possible to transition the secondary locking element from one predetermined position to another predetermined position are also known.
  • Document WO 2012/055719 A1 in particular discloses a pyrotechnic connector comprising a secondary locking system assisted by a U-shaped spring-rod, in which the transverse part of the "U” is fastened in the connector and the ends of the two tabs of the "U” are in contact with a secondary locking element.
  • the tabs of the spring i.e., its end parts, can move in an insertion path of the connector
  • the locking element comprises deflecting surfaces making it possible to deflect the ends of the tabs of the spring in a path perpendicular to the insertion path of the connector, in other words in a path separating the tabs of the spring from each other.
  • One aim of the present invention is therefore to provide an improved solution relative to the state of the art, in particular complying with the compactness standards required for pyrotechnic connectors in the automobile industry and making it possible to ensure, automatically, on the one hand that a pyrotechnic connector for a restraint system cannot be incorrectly connected to an igniter holder whose standard is imposed by the automobile industry; and on the other hand, that a secondary locking is done once the connector is correctly coupled to the igniter holder.
  • an electrical connector according to claim 1 , the connector being able to be coupled with a mating electrical connector according to a first direction of a coupling path
  • said electrical connector comprising: a main housing; a locking spring, provided in the main housing and relaxed in a delivery state of the connector; a connector position assurance element, movable so as to drive a tension of the spring in a loaded state of the connector in which, when the coupling or connection takes place with a mating connector, the tension of the spring opposes the coupling while the connector and the mating connector are not correctly coupled; and at least one main locking element, preferably two main locking elements, provided on the main housing, in a delivery position in the delivery state, and able to be deflected during coupling, the delivery position making it possible to lock the connector to the mating connector when they are correctly coupled.
  • the movement of a mating connector position assurance device with at least one locking spring makes it possible, during coupling of the connector with the mating connector, first to transition the connector from the delivery state to a loaded state in which the tension of the spring opposes the coupling.
  • the connector position assurance element is further configured to prevent a deflection of said at least one main locking element in the delivery state.
  • the electrical connector may be a pyrotechnic connector for a motor vehicle safety restraint system.
  • the invention is adapted to the automobile connection field, in particular the connection of pyrotechnic systems, but other advantageous embodiments can be considered for electrical systems whose installation in a limited space requires compactness standards similar to those of pyrotechnic connectors.
  • the invention advantageously makes it possible to combine the snap-lock principle with a connector position assurance element.
  • a CPA device can serve on the one hand to drive a tension of the locking spring during a contact phase or an approach phase for coupling of the connector with a counter-connector, and on the other hand to ensure the maintenance of the main locking of the connector when the latter is correctly coupled to the counter-connector.
  • the invention allows the automatic ejection of a connector incorrectly plugged into a counter-connector.
  • the invention can therefore allow the automatic ejection of a pyrotechnic connector if the latter is incorrectly inserted or is not completely inserted into the standard mating igniter holder.
  • the connector returns to its delivery state in which said at least one element ensuring the main locking with the mating receptacle, which can for example be a locking lance, can no longer be deflected because it is blocked by the delivery position of the connector position assurance element.
  • one preferred embodiment of the invention makes it possible to provide a suitable pyrotechnic connector that will be ejected automatically if it is incorrectly plugged in, but whose secondary locking by a CPA device will be activated automatically once the connector is correctly plugged into the igniter holder.
  • a delivery state of the connector may be a state in which the spring, the CPA device and said at least one main locking element are in their delivery position.
  • the spring in the delivery state: the spring may be essentially relaxed or in any case has a minimal tension relative to a loaded state in which the spring is pushed back, and therefore tensed or loaded, by the deflection of the connector position assurance element; the connector position assurance element is in its initial position, which is its default idle position before coming into contact with a contact surface of the counter-connector during coupling, or just into contact therewith; and said at least one main locking element, which can be deflected during coupling, is in its non-deflected position which, when the connector is correctly coupled to the mating connector, ensures the main locking, for example between a pyrotechnic connector and a mating igniter holder.
  • a loaded state of the connector can be a state in which the spring is loaded according to the movement of the connector position assurance element, in particular in a direction opposing the coupling direction of the connector in the mating connector.
  • a loaded state can be a state in which the CPA device of the connector according to the invention is pushed against a contact surface of the counter-connector in a coupling phase, for example a coupling section of the counter- connector.
  • the connector position assurance element being movable between the delivery and loaded states of the connector, a thrust of the connector in the coupling direction, and therefore of its position assurance element, against a surface or coupling section of the counter-connector during the coupling then moves the connector position assurance element, consequently driving the loading of the spring.
  • the connector position assurance element in the loaded state, can allow a deflection of said at least one main locking element. It is therefore possible to combine the preceding advantageous effects with a CPA device that may be configured so as, in the loaded state of the connector and once the CPA device has been sufficiently moved by a thrust against the counter-connector during coupling, to be able to authorize the deflection of the main locking element of the connector, then making it possible to go to a correctly locked state of the connector with the counter-connector if the coupling is continued.
  • the locking lance(s) of a pyrotechnic connector can therefore be deflected in a loaded state, that making it possible to continue the insertion of the pyrotechnic connector in the igniter holder.
  • the locking lance(s) can return to their delivery position, then snapping into spaces provided in the igniter holder and thus performing the main locking therewith.
  • the invention is advantageous relative to the pyrotechnic connectors known from the state of the art because the tension of the loaded spring makes it possible: when the connector is not completely and correctly inserted into the counter-connector, to eject the connector automatically by exerting an inverse thrust of the connector position assurance element on a contact surface of the counter-connector; or, when the connector is correctly inserted into the counter-connector, to automatically return the connector position assurance element to its delivery position, thereby preventing a deflection of the main locking element(s), thus ensuring maintenance of the locking.
  • the connector position assurance element can be movable between the delivery state and the loaded state of the connector, in particular relative to the main housing, in the coupling path.
  • the position assurance element can be movable from the delivery state to the loaded state in a second direction, opposite the first direction of the coupling path, when the movement of the position assurance element making it possible to return to the delivery state from the loaded state can take place in the first direction of the coupling path, i.e., the same direction as the insertion direction of the connector into a mating connector.
  • the locking spring can be partially arranged in the connector position assurance element.
  • the spring can be arranged in a slot provided to that end in the position assurance element. A movement of the connector position assurance element during a transition between the delivery and loaded states can therefore be transmitted directly to the spring, whose load will then oppose the connection, at least as long as the connector is not correctly plugged into its mating connector.
  • the locking spring can be a formed wire spring, in particular a formed wire spring-rod.
  • the locking spring can comprise at least one respective longitudinal part and end part, a longitudinal part being able to form an initial angle with its respective end part in the delivery state of the connector.
  • the initial angle can be essentially a right angle, or in any case a slightly acute or obtuse angle fairly close to a right angle.
  • a traditional purely helical spring can be considered in certain types of connector, but in the case of a pyrotechnic connector whose dimensions must meet compactness standards imposed by the automobile industry, it is more advantageous to use a formed wire spring of the spring-rod type, whose geometry can be preformed so as to be suitable for that of the housing of the connector.
  • the locking spring may further comprise at least one helical part, and said at least one helical part can join a longitudinal part to a respective end part, the axis of the helical part then preferably being essentially perpendicular to the longitudinal part and essentially perpendicular or parallel to the respective end part. It is therefore also advantageous to use a formed wire spring combining a helical part forming a pivot spring between two rod parts so as to reinforce the spring effect of the snap- locking system.
  • the electrical connector according to the present invention can comprise more than one locking spring, in particular two locking springs.
  • the connector can further comprise a second locking spring, which may preferably be similar in all points to the first locking spring, and which may in particular be essentially symmetrical to the first locking spring. While only one locking spring is sufficient to carry out the present invention, it is also possible to obtain the same advantageous effects by using more than one locking spring.
  • two essentially symmetrical springs can be essentially equivalent to a U-shaped spring.
  • the spring can be essentially a "U" shape with a transverse part and two lateral parts able each to comprise an end part, and the two end parts can be essentially perpendicular to the lateral parts.
  • the two end parts can form, in the delivery state, an initial angle, in particular right or acute, with the lateral parts.
  • a formed wire spring can therefore adopt several geometries.
  • the spring can therefore be a spring similar to those used for mousetraps and can therefore comprise two lateral rods united at one end by a transverse rod and having, at the other end, tabs essentially perpendicular to the lateral rods.
  • the alternative using two essentially symmetrical locking springs can be essentially equivalent to the U-shaped spring from which the transverse rod is removed.
  • the U-shaped spring can further comprise turns between each lateral part and its end part, and the axis of the turns may preferably be essentially perpendicular to the lateral rods and parallel or perpendicular to the end parts.
  • the lateral rods can form turns before the tabs of the spring, which has the advantage of increasing the repulsion force created by the spring when it is loaded, therefore effectively pushing back a connector that is incorrectly plugged into a mating receptacle.
  • Each lateral rod of the U-shaped spring can therefore correspond to the longitudinal rod of one of the two symmetrical springs, all of these alternatives being able to be combined with a helical part between the longitudinal/lateral rods and the respective end parts.
  • the standard igniter holders are generally such that the connectors comprise two locking lances arranged on opposite sides of the connector, which snap into receiving spaces of the receptacle.
  • a CPA device of the connector can therefore advantageously comprise two elements arranged so as to avoid a deflection of the locking lances of the connector.
  • each longitudinal rod can be partially received in a suitable slot of the CPA so as to obtain the same advantageous effect.
  • the loaded spring can then exert a force opposite the coupling, thereby favoring the automatic ejection of the connector when it is incorrectly inserted or is not completely coupled with the counter-connector.
  • This alternative is advantageous in particular in the case of a pyrotechnic connector in order to meet the needs of the automobile industry related to safety during the installation of such connectors, but also related to compactness.
  • the lateral parts may each include a recess, in particular in the shape of a valley, or for example V-shaped, able to form a stop for the thrust surfaces of the position assurance element.
  • This alternative has proven advantageous in the case of a squib connector given that the standard igniter holder receptacles are generally configured such that the connectors comprise two locking lances arranged on opposite sides of the connector.
  • the tension of the spring in the loaded state, can be such that the angle between the two end parts and the lateral parts can be greater than the initial angle.
  • the loaded spring can then exert a force opposite the coupling, thereby favoring the automatic ejection of the connector when it is incorrectly inserted or is not completely coupled with the counter-connector.
  • This alternative is also advantageous in the case of a squib connector in order to meet the safety needs of the automobile industry during the installation of such connectors.
  • said at least one helical part can be arranged around an element forming a respective axis provided in the main housing.
  • the element forming the axis can be arranged preferably essentially perpendicular to the lateral rods of the spring and parallel to the end parts or tabs of the spring, or also perpendicular to the latter in other embodiments.
  • the connector position assurance element can comprise at least one secondary locking element, in particular two secondary locking elements, able to be provided such the deflection of said at least one main locking element is prevented in the delivery state.
  • a CPA device comprising one or more locking tabs can therefore be used advantageously so that the locking tab(s) prevent a deflection of the locking lances of a pyrotechnic connector in the delivery state, thus reinforcing a locked state of the correctly coupled connector.
  • said at least one main locking element for example the locking lances of a particular connector
  • said at least one secondary locking element can comprise a part arranged, in the delivery state, so as to wedge said at least one main locking element and thereby prevent a deflection thereof.
  • the locking lances provided for the main locking are generally snapped into spaces of the mating connector provided to that end. It is therefore only necessary to block a possible flexion in a direction allowing disengagement.
  • This alternative of the present invention therefore advantageously makes it possible to use a CPA device, for example including locking tabs, whereof part of the locking tabs can be housed directly behind the lances of the main locking, thereby preventing any disengagement once the connector is plugged into the mating receptacle, in particular in case of impact and/or vibrations.
  • the connector position assurance element in particular if applicable said at least one secondary locking element, can be provided with at least one bearing surface configured to bear, during coupling, against a predetermined surface of a coupling section of the mating connector, thereby driving the transition from the delivery state to the loaded state.
  • This alternative is preferred in the case of pyrotechnic connectors and is advantageous, for example combined with an alternative in which a CPA device can be moved in the coupling path, in order to transmit the mutual thrust of the connector against the counter-connector during coupling directly to the CPA device and consequently to the spring.
  • the connector position assurance element comprises one or more secondary locking elements, for example in the case of a CPA device comprising one or more locking tabs, it is advantageous for the locking tab(s) to define at least one bearing surface and therefore to come directly into contact with the coupling section of the mating connector.
  • the coupling section of the mating connector can be defined as the face of the mating connector that is presented to the connector during coupling, which can therefore be the face comprising orifices or contact openings for the insertion of contact pins of the connector.
  • the coupling section can be perpendicular to the insertion path or coupling path.
  • the connector position assurance element can further be configured so as, during coupling, to transition the connector back from the loaded state to the delivery state under the effect of the load of the locking spring when the connector and the mating connector are correctly coupled.
  • a connector and counter-connector system that is correctly coupled and locked can then advantageously comprise only essentially idle elements.
  • the load of the locking spring cannot automatically drive a transition of the connector position assurance element from the loaded state to the delivery state.
  • the secondary locking can be activated automatically, ensuring the maintenance of the main locking in a locked state of the connector.
  • the main housing can further comprise at least one release surface configured to release at least one secondary locking element into the loaded state when the connector and the mating connector are correctly coupled.
  • the release can in particular be done in a release path essentially perpendicular to the coupling path.
  • a CPA device comprises one or more locking tabs to perform the secondary locking by becoming wedged behind the locking lances of the connector.
  • the movement of the CPA device in particular in a direction opposite the insertion direction, may have reached a maximum in which the locking tabs, which until then were abutting on the respective surfaces of the coupling section of the mating connector, will then be released via release surfaces, for example lugs provided in the connector.
  • the load of the locking spring may then automatically push the CPA device back in the insertion direction to cause it to return to its delivery position, then advantageously placing the secondary locking tabs behind the main locking lances.
  • the electrical connector may further comprise a cover able to be fastened to the main body and comprising at least one surface limiting a movement of the connector position assurance element in a second direction of the coupling path, opposite the first direction.
  • the movement of a CPA device may be limited to the inside of the main housing of the connector by a stop on one or more surfaces of the cover.
  • the cover may further comprise at least one receiving zone making it possible to accommodate the spring at least partially, in its loaded state.
  • This alternative is also advantageous because it also makes it possible to have a solution adapted to compactness standards for the igniter holder receptacles for safety restraint systems in motor vehicles.
  • the cover may comprise retaining zones provided to house the two end parts of the locking spring.
  • the end part(s) may be housed, or wedged, in a retaining part provided in the main housing.
  • This alternative has proven advantageous in particular in embodiments combined with two springs or with one equivalent spring of the "mousetrap" type because it in particular makes it possible to keep the tabs of the spring essentially fastened in the main housing of the connector and to restrict the manner in which the spring can be loaded as well as to restrict the manner in which the spring can be arranged in the main housing.
  • Figure 1 schematically illustrates a known standard igniter holder example, in an exploded view
  • Figure 2 schematically illustrates an example of a first embodiment of an electrical connector according to the present invention, in an exploded view
  • FIG 3 schematically illustrates an example position assurance device for the connector of the embodiment illustrated in Figure 2;
  • FIGS 4A to 4D schematically illustrate an approach phase during coupling of the connector according to the embodiment illustrated in Figure 2, in its delivery state, with the standard igniter holder illustrated in Figure 1 ;
  • FIGS 5A and 5B schematically illustrate another phase during coupling of the connector according to the embodiment illustrated in Figure 2, in a loaded state, with the standard igniter holder illustrated in Figure 1 ;
  • FIGS 6A and 6B schematically illustrate another phase during coupling of the connector according to the embodiment illustrated in Figure 2, in a loaded state, with the standard igniter holder illustrated in Figure 1 ;
  • Figures 7A to 7D schematically illustrate a correctly coupled and locked state of the connector according to the embodiment illustrated in Figure 2, in the delivery state, with the standard igniter holder illustrated in Figure 1 ;
  • Figure 8 schematically illustrates one example of a second embodiment of an electrical connector according to the present invention, in an exploded view
  • Figure 9 schematically illustrates an example of a position assurance device for the connector of the embodiment illustrated in Figure 8.
  • Figures 10A and 10B schematically illustrate an approach phase during coupling of the connector according to the embodiment illustrated in Figure 8, in its delivery state, with the standard igniter holder illustrated in Figure 1 ;
  • Figure 1 1 schematically illustrates another phase during coupling of the connector according to the embodiment illustrated in Figure 8, in a loaded state, with the standard igniter holder illustrated in Figure 1 ;
  • Figure 12 schematically illustrates another phase during coupling of the connector according to the embodiment illustrated in Figure 8, in a loaded state, with the standard igniter holder illustrated in Figure 1 ;
  • Figures 13A to 13C schematically illustrate a correctly coupled and locked state of the connector according to the embodiment illustrated in Figure 8, in the delivery state, with the standard igniter holder illustrated in Figure 1 ;
  • Figure 14 schematically illustrates an example of a third embodiment of an electrical connector according to the present invention, in an exploded view;
  • Figure 15 schematically illustrates the position assurance device of the connector of the embodiment illustrated in Figure 14;
  • Figures 16A and 16B schematically illustrate an approach phase during coupling of the connector according to the embodiment illustrated in Figure 14, in its delivery state, with the standard squib holder receptacle illustrated in Figure 1 ;
  • Figure 17 schematically illustrates another phase during the coupling of the connector according to the embodiment illustrated in Figure 14, in a loaded state, with the standard squib holder receptacle illustrated in Figure 1 ;
  • Figures 18A and 18B schematically illustrate another phase during coupling of the connector according to the embodiment illustrated in Figure 14, in a loaded state, with the standard squib holder receptacle illustrated in Figure 1 ;
  • Figures 19A to 19C schematically illustrate a correctly coupled and locked state of the connector according to the embodiment illustrated in Figure 14, in the delivery state, with the standard squib holder receptacle illustrated in Figure 1.
  • FIG 1 illustrates a standard squib holder example 100, or standard squib holder receptacle, known for a safety restraint system such as an airbag or a seatbelt of a motor vehicle.
  • the igniter holder 100 which is shown in exploded view in Figure 1 , is a receptacle commonly used by automobile builders on the safety restraint system side and therefore, if applicable, the pyrotechnic device.
  • a control unit of an impact and/or vibration sensor can therefore be connected to a pyrotechnic device using electrical cables ending up at a pyrotechnic connector, or squib connector, that must be plugged into the igniter holder 100.
  • the example receptacle or igniter holder 100 illustrated in Figure 1 is therefore not part of the present invention as such, but is useful to understand it.
  • a standard igniter holder 100 may include a base part
  • receptacle part that is most often cylindrical, in which a retaining element
  • the inside 105 of the base part 101 can include grooves or notches 103, 104 that are blocking zones and that can for example be two slots 103, 104 in diametrically opposite arcs on a circumference of the inner face 105, in which locking lugs 106, 107 and 129, 130, respectively, of an outer body 123 of the ring 102 can be housed, for example by snapping, so as to maintain or block the latter once housed in the base part 101 .
  • the border 131 of the base part 101 can also include notches 108, 109, which are generally diametrically opposite, in which suitable protuberances 1 10, 1 1 1 of the outer body 123 of the ring 102 can be housed, for example so as to prevent a rotation of the ring 102 in the base part 101.
  • Figure 1 further illustrates that the ring 102, which can therefore be standard for an automobile builder, can include an inner body 124 inside the outer body 123 and in particular comprising two contact openings or orifices 1 12, 1 13 designed to receive the terminals of a pyrotechnic connector mated with the contact pins 1 14, 1 15 of the igniter holder 100 when a pyrotechnic connector is plugged into the igniter holder 100, for example in an insertion path like that embodied later by the arrow 300 in Figure 4A.
  • Figure 1 illustrates that the inner body 124 of the ring 102 can define a coupling section 1 16 that is the section facing a pyrotechnic connector coupling to the igniter holder 100.
  • the approach of the connector will be done in a coupling path essentially perpendicular to the coupling section 1 16, for example as in the embodiments outlined above in reference to Figures 4A, 10A or 16A, respectively.
  • the ring 102 can also comprise, still in a standard manner, two lateral openings 1 17, 1 18, respectively situated between the lugs 106, 107 on one side and between the lugs 129, 130 on the other side of the outer body 123 and in particular allowing the deflection of blocking elements of a pyrotechnic connector to make it possible to plug the latter into the igniter holder 100.
  • the inner body 124 can comprise a plurality of notches or recesses 1 19, 120 and 121 , 122, respectively, defining a respective rib 125, 126 of each side of the inner body 124.
  • the ribs 125, 126 define surfaces 127, 128 that can be chosen to produce contact and bearing surfaces for a connector according to the present invention as in the embodiments illustrated below.
  • FIG 2 illustrates an example of a first embodiment of the connector 1200 according to the present invention, in an exploded view.
  • the connector 1200 is a pyrotechnic connector provided to be plugged into the standard igniter holder 100 of the example illustrated in Figure 1.
  • the connector 1200 therefore makes it possible to connect conducting cables 1203, 1204 like those shown in Figure 4C for example coming from a control unit of an impact and/or vibration sensor for a safety restraint system with a pyrotechnic charge connected to the igniter holder 100.
  • the connector 1200 can comprise a main housing 1201 with a main part 1205 with an essentially parallelepiped geometry comprising a housing 1207 for a filtering ferrite 1208 arranged around the cables 1203, 1204, as well as passage openings 1215, 1216 for the cables 1203, 1204.
  • Figure 2 also shows that the main housing 1201 can also comprise a connection part 1206 that is essentially perpendicular to the main part 1205 and integral therewith, which can have a suitable geometry for being plugged into the space between the inner body 124 and the outer body 123 of the ring 102 of the igniter holder 100, and therefore essentially cylindrical.
  • connection part 1206 can in particular comprise two contact openings 1209, 1210 mated to the contact openings 1 12, 1 13 of the igniter holder 100, able to receive the contacts 1213, 1214 of the terminals 121 1 , 1212 finishing the two cables 1203, 1204, the contacts 1213, 1214 being mated to the pins 1 14, 1 15.
  • connection part 1206 can comprise at least one main or primary locking element, here the two locking lances 1217, 1218, one of which is not visible in Figure 2 but appears in Figures 4A, 5A, 6A and 7A, able to be deflected in a respective deflection space 1219, 1220 in order to allow an insertion in the ignition holder 100, and able, in their delivery position, i.e., when they are not deflected, to perform a primary or main locking, in particular by snapping, with the locking zones 103, 104 of the standard igniter holder or receptacle 100 when the connector 1200 is correctly inserted therein, as will be described in more detail relative to Figures 6A and 6B and Figures 7A to 7D.
  • the dimensions of the locking lances 1217, 1218 can therefore be constrained, inter alia, by the dimensions of the orifices 1 17, 1 18 and the locking zones 103, 104 of the standard igniter holder 100.
  • Figure 2 also shows that the connector 1200 can comprise a locking spring 1221 that can preferably be a formed wire spring-rod.
  • the spring 1221 can preferably be U-shaped and therefore comprise a transverse rod 1222 extended by two lateral rods 1223, 1224, the latter advantageously being able to end with tabs 1225, 1226 returning toward the inside of the main part 1205 essentially perpendicular to the lateral rods 1223, 1224 when the spring is in its delivery position or state, i.e., when the spring is essentially relaxed.
  • a slight tension may exist in the delivery state, which is the minimal tension relative to a tension when the spring 1221 is in a loaded state.
  • the spring 1221 can also be of the "mousetrap" type and comprise parts with turns 1227, 1228 between the lateral rods 1223, 1224 and the tabs 1225, 1226.
  • Figure 2 illustrates that the main housing 1201 can include elements 1233, 1234 forming a respective transverse axis on each side of the housing 1201 around which the turns 1227, 1228 of the spring 1221 can be arranged.
  • the connector 1200 can advantageously be made compact, in particular because the cover 1202 can be flat, as illustrated in Figure 2.
  • the exploded view of Figure 2 illustrates that the connector 1200 can also comprise a CPA device 1235, which is illustrated in detail in Figure 3.
  • the CPA device 1235 can advantageously be configured to interact with the surfaces 127, 128 of the coupling section 1 16 defined by the ribs 125, 126 between the notches 1 19, 120 and 121 , 122 of the ring 102 of the standard igniter holder 100, while serving as an element making it possible to ensure that the locking lances 1217, 1218 of the connector 1200 are not deflected in particular in the delivery state, and more particularly when the connector 1200 is correctly plugged into the igniter holder 100.
  • the CPA device 1235 can therefore comprise a contact surface, defined in the embodiment illustrated in Figure 3 by the two parts 1236, 1239, from which one or more secondary locking elements can extend, here two lateral tabs 1237, 1238 whereof the head 1240, 1241 can be slightly folded toward the inside and whereof the end can define a respective contact surface 1242, 1243 configured to serve as a contact surface with the surfaces 127, 128 defined by the ribs 125, 126 between the notches 1 19, 120 and 121 , 122, respectively, during coupling.
  • the locking tabs 1237, 1238 in particular the head 1240, 1241 of each tab 1237, 1238, can be arranged behind the locking lances 1217, 1218 so as to wedge them and prevent deflection thereof.
  • This prevention can be reinforced by contact zones 1244, 1245 and 1246, 1247 on each side of the tabs 1237, 1238, respectively, on which, in the delivery state, tabs 1265, 1266, 1267, 1268 provided on the locking lances 1217, 1218 can abut, at least partially visible in Figure 2.
  • Figure 3 also shows that the CPA device 1235 can comprise slots 1248, 1249, 1250 defining a groove 1251 with a geometry similar to that of the "U" formed by the rods
  • the slot 1248 can receive the transverse rod 1222 of the spring 1221 at any time.
  • the lateral rods In a maximal relative loaded state, the lateral rods
  • the inward folding defined by the heads 1240, 1241 of the locking tabs 1237, 1238 makes it possible, once the connector 1200 is correctly plugged into the igniter holder 100, to deflect the tabs 1237, 1238 using lugs 1269, 1270 of the connection part 1206 of the main housing 1201 , and to thus return from a maximal relative loaded state to the delivery state to block the locking lances 1217, 1218 and therefore to maintain the locking of the pyrotechnic connector 100, 1200, as will be described in more detail relative to Figures 6A, 6B and 7A to 7D.
  • Figure 2 also illustrates that the connector 1200 may comprise a cover 1202 that can be fastened to the main housing 1201.
  • the cover 1202 can comprise locking elements such as locking lances 1255, 1256 allowing locking with associated locking zones 1258, 1259 of the main housing 1201 , as well as a locking zone 1257 that can be locked by an associated locking lug 1260 of the main housing 1201 .
  • the cover 1202 can also comprise contact or stop surfaces 1271 , 1272 limiting a rise of the CPA device 1235 in a loaded state, as illustrated by Figures 6A and 6B.
  • FIGS. 4A and 4D, 5A and 5B, 6A and 6B and 7A to 7D illustrate an example of an embodiment of a coupling or connection sequence of the connector 1200 of the embodiment illustrated in Figures 2 and 3 with the igniter holder 100 of the example illustrated in Figure 1.
  • the sequence will be outlined from a step in which the connector 1200 is in the delivery state and comes just into contact with the igniter holder 100, going through the charged state steps of the connector 1200, in particular of the spring 1221 under the effect of the movement of the CPA device 1235, until a step where the connector 1200 is correctly plugged in, and lastly completely locked to the igniter holder 100 and is therefore returned to the delivery state.
  • Figures 4A to 4D illustrate a step where the connector 1200, in its delivery state, comes into contact with the standard igniter holder 100.
  • Figure 4A is a sectional view in particular illustrating the interaction of the CPA device 1235 with elements of the connector 1200 and the igniter holder 100.
  • Figure 4B is another sectional view of the same step, but particularly outlining the position of the locking spring 1221 based on the position of the CPA device 1235.
  • Figure 4D corresponds to the overall view of Figure 4C, in which the base part 101 and the main housing 1201 have nevertheless been made transparent so as to see the CPA device 1235 and the ring or retaining part 102.
  • the connector 1200 can be inserted into the igniter holder 100 in an insertion path in a direction embodied by arrow 300 in Figures 4A to 4D, which can essentially be perpendicular to the coupling section 1 16 of the igniter holder 100.
  • the connector 1200 is therefore not truly plugged into the igniter holder 100, but rests just in contact therewith. In that step, there is still no electric contact between the contact pins 1 14, 1 15 of the igniter holder 100 and the contacts 1213, 1214 of the pyrotechnic connector 1200.
  • the spring 1221 is in its relaxed state, in particular visible in Figure 4B.
  • the tabs 1225, 1226 of the spring are blocked in the zones 1231 , 1232 of the cover 1202 of the main housing 1201 , as also illustrated by Figure 4B.
  • Figure 4B further illustrates that the turns 1227, 1228 of the spring 1221 are arranged around axes 1233, 1234 provided in the main housing 1201 according to one preferred alternative of an embodiment.
  • the delivery state of the spring can correspond to a minimal relative load state relative to the loaded states.
  • the spring 1221 is slightly loaded in the delivery state, its load in the delivery state will then be a minimal relative load smaller than that of a loaded state as described in more detail relatives Figures 5A, 5B, 6A and 6B.
  • Figures 4A and 4B further illustrate that in the delivery state, the CPA device 1235 is in the title position, such that its contact surfaces 1244, 1245 and 1246, 1247 rest in contact with the tabs 1265, 1266 and 1267, 1268 of the two locking lances 1217, 1218, respectively, and the lateral tabs 1237, 1238 of the CPA device 1235 prevent a deflection of the locking lances 1217, 1218 in the spaces 1 17, 1 18 of the ring 102 and the corresponding spaces 1219, 1220 of the connection part 1206, which arrives in the ring 102.
  • connection part 1206 cannot advance further in the ring 102, since the lances 1217, 1218 will abut against the edge 131 of the base part 101.
  • Figures 4A and 4D also illustrate that in this step, the heads 1240 and 1241 of the locking tabs 1237, 1238 rest bearing on the coupling section 1 16 and in particular on the surfaces 127, 128 of the ribs 125, 126 of the ring 102.
  • a force exerted on the connector 1200 in the insertion direction 300 to continue the coupling will then cause a movement, in particular a rising, of the CPA device 1235 in an ejection direction 301 opposite the insertion direction 300, then transitioning the connector 1200 to a loaded state, as illustrated by Figures 5A and 5B.
  • Figures 5A and 5B reiterate the sectional views of Figures 4A and 4B, respectively, following the continuation of the insertion movement of the connector 1200 into the igniter holder 100.
  • the connection part 1206 of the connector 1200 therefore penetrates a bit further into the ring 102 of the igniter holder 100 than in the step illustrated in Figures 4A to 4D.
  • Figure 5A illustrates that a beginning of electrical contact can then be initiated between the pins 1 14, 1 15 and the mated contacts 1213, 1214.
  • the CPA device 1235 has been moved in the direction 301 and therefore rises along the connection part 1206 under the action of the thrust exerted by the contact surfaces 1242, 1243 of the locking tabs 1237, 1238 on the surfaces 127, 128 of the coupling section 1 16 of the ring 102.
  • the contact surfaces 1244, 1245 and 1246, 1247 of the CPA device 1235 are therefore brought upward relative to the tabs 1265, 1266 and 1267, 1268 of the locking lances 1217, 1218.
  • the heads 1240, 1241 of the secondary locking tabs 1237, 1238 are no longer housed in the locking lances 1217, 1218.
  • FIG. 5A in particular illustrates the deflection and partial insertion of the locking lances 1217, 1218 in the igniter holder 100.
  • the movement of the CPA device 1235 in the rising direction 301 relative to the connection part 1206 causes loading of the locking spring 1221 , the transverse rod 1222 of which undergoes pressure transmitted directly via the slot 1248 of the CPA device 1235.
  • the spring 1221 is therefore in a loaded state, as in particular illustrated in the cross-section of Figure 5B.
  • the transverse rods 1223, 1224 can then be partially housed more in the lateral slots 1249, 1250 of the groove 1251 provided in the CPA device 1235 than in the delivery state in particular illustrated in Figure 4B.
  • the spring 1221 will automatically push the CPA device 1235 back in direction 300, which will result in an automatic ejection of the connector 1200 in the ejection direction 301. An incorrect connection can thus be avoided automatically.
  • the surfaces 1271 , 1272 of the cover 1202 limit the rise of the CPA device 1235 in the direction 301 and therefore also that of the spring 1221.
  • the contact pins 1 14, 1 15 have advanced further in the contacts 1213, 1214 relative to the step illustrated Figures 5A and 5B, as in particular shown in Figure 6A.
  • Figures 6A and 6B illustrate that in this loaded step, which can therefore be a maximal relative loaded state of the spring 1221 relative to intermediate loaded states like that shown in Figures 5A and 5B, the locking lances 1217, 1218, which may have been deflected in the openings 1 17, 1 18 and/or in the orifices 1219, 1220 in the step illustrated in Figures 5A and 5B, have now advanced sufficiently to allow the correct insertion of the connection part 1206 into the ring 102 and the main locking of the locking lances 1217, 1218, which have now returned to their delivery state, with the locking zones 103, 104 of the base part 101.
  • FIG. 6A The cross-section of Figure 6A further illustrates that the rising of the CPA device 1235 has been guided by the action of the lugs 1269, 1270 of the connection part 1206 on the heads 1240, 1241 of the locking tabs 1237, 1238 of the CPA device 1235.
  • the rising of the CPA device 1235 in the maximal relative load state, is therefore such that the play of the biased surfaces of the heads 1240, 1241 of the locking tabs 1237, 1238 on the release surfaces or lugs 1269, 1270 has caused a deflection of the tabs 1237, 1238 in the directions indicated by the arrows 302, 303, respectively, toward the notches 1263, 1264 of the housing 1201 .
  • This deflection allows the secondary locking tabs 1237, 1238, in particular the heads 1240, 1241 , to be released relative to the contact surfaces 127, 128.
  • the connector 1200 being correctly inserted into the igniter holder 100, in particular in a maximal relative load state as illustrated in Figures 6A and 6B, the maximal relative load of the locking spring 1221 will henceforth push the CPA device 1235 in the direction 300.
  • the CPA device 1235 which at this stage is therefore no longer blocked by the surfaces 127, 128 of the ribs 125, 126 due to the deflection of the locking tabs 1237, 1238, will be able to slide automatically inside the igniter holder 100, and regain its initial delivery state, as illustrated by Figures 7A to 7D.
  • Figure 7A reiterates the view of Figures 4A, 5A and 6A, this time with the connector 1200 correctly inserted and completely locked in the igniter holder 100.
  • Figure 7B reiterates the view of Figures 4B, 5B and 6B, respectively.
  • figure 7C reiterates the views of Figure 4C, and figure 7D reiterates the view of Figure 7C, but concealing the base part 101 , which makes it possible to see that the connector 1200 has indeed returned to its delivery state, as previously described.
  • the connector 1200 is therefore essentially in a state that is the same as that described relative Figures 4A to 4D, with the exception that it is physically present, plugged and locked in the igniter holder 100.
  • FIG. 8 illustrates an example of a second embodiment of the connector 2200 according to the present invention, in an exploded view.
  • the connector 2200 is a pyrotechnic connector provided to be plugged into the standard igniter holder 100 of the example illustrated in Figure 1.
  • the connector 2200 therefore makes it possible to connect conducting cables 2203, 2204 like those shown in Figure 8 for example coming from a control unit of an impact and/or vibration sensor for a safety restraint system with a pyrotechnic charge connected to the igniter holder 100.
  • the connector 2200 can comprise a main housing 2201 with a main part 2205 with an essentially parallelepiped geometry comprising a housing 2207 for a filtering ferrite 2208 arranged around the cables 2203, 2204, as well as passage openings 2215, 2216 for the cables 2203, 2204.
  • Figure 8 also shows that the main housing 2201 can also comprise a connection part 2206 that is essentially perpendicular to the main part 2205 and integral therewith, which can have a suitable geometry for being plugged into the space between the inner body 124 and the outer body 123 of the ring 102 of the igniter holder 100, and therefore essentially cylindrical.
  • connection part 2206 can in particular comprise two contact openings 2209, 2210 mated to the contact openings 1 12, 1 13 of the igniter holder 100, able to receive the contacts 2213, 2214 of the terminals 221 1 , 2212 finishing the two cables 2203, 2204, the contacts 2213, 2214 being mated to the pins 1 14, 1 15.
  • connection part 2206 can comprise at least one main or primary locking element, here the two locking lances 2217, 2218, one of which is not visible in Figure 8 but appears in Figures 12 and 13C, able to be deflected in a respective deflection space 2219, 2220 in order to allow an insertion in the ignition holder 100, and able, in their delivery position, i.e., when they are not deflected, to perform a primary or main locking, in particular by snapping, with the locking zones 103, 104 of the standard igniter holder or receptacle 100 when the connector 2200 is correctly inserted therein, as will be described in more detail relative to Figures 12 and 13A to 13C.
  • main or primary locking element here the two locking lances 2217, 2218, one of which is not visible in Figure 8 but appears in Figures 12 and 13C, able to be deflected in a respective deflection space 2219, 2220 in order to allow an insertion in the ignition holder 100, and able, in
  • the connector 2200 can comprise a locking spring 2221 that can preferably be a formed wire spring-rod.
  • the spring 2221 can preferably comprise a longitudinal rod 2224 extending essentially in the longitudinal path of the main part 2205 of the housing 2201 and advantageously able to end with a tab 2226 essentially perpendicular to the rod 2224 when the spring is in its delivery position or state, i.e., when the spring is essentially relaxed.
  • the angle between the rod 2224 and the tab 2226 in the delivery state can be slightly different from a right angle and can therefore be slightly acute or obtuse, as also illustrated by Figure 8.
  • a slight tension may exist in the delivery state, which is then a minimal tension relative to a tension when the spring 2221 is in a loaded state.
  • the spring 2221 may also be of the "mousetrap" type and comprise a part with turns or a helical part 2228 between the longitudinal rod 2224 and the tab 2226.
  • the axis of the helical part 2228 can therefore be essentially perpendicular to plane defined by the paths of the rod 2224 and the tab 2226.
  • the connector 2200 can also comprise a second spring 2222, which can be essentially symmetrical to the spring 2221 , and therefore arranged symmetrically thereto in the main housing 2201.
  • the second spring 2222 can also be a formed wire spring-rod and comprise elements similar in all points and having the same advantages as those of the spring 2221. Consequently, the spring 2222 can also comprise a helical part 2227 extended at one end by a longitudinal rod 2223 and ending with a tab 2225 at its other end, the axis of the helical part 2227 then also being able to be perpendicular to a plane defined by the paths of the rod 2223 and the tab 2225.
  • the two springs 2221 , 2222 may be equivalent to the spring 3221 of the embodiment illustrated in Figure 14 from which the transverse rod 3222 will have been removed.
  • the configuration of the transverse or lateral rods 2223, 2224 and tabs 2225, 2226 can be interchangeable between the embodiments. Consequently, the essential aspects of the features described for the other embodiments and their advantages regarding the springs, their arrangement and their interaction with the described systems, more particularly the advantages of the spring locking and automatic ejection functionality for an incorrectly locked connector, are also valid for the combination of springs 2221 , 2222 of the second embodiment, as will become obvious in what follows.
  • FIG. 8 further illustrates that the main housing 2201 can include elements 2233,
  • the connector 2200 can then advantageously be made compact in particular because the cover 2202 can be flat, as illustrated by Figure 8. Lastly, the tabs 2225, 2226 can be wedged against respective zones 2231 , 2232 of the main part 2205 of the housing 2201 , behind the axes 2233, 2234.
  • the exploded view of Figure 8 illustrates that the connector 2200 can also comprise a CPA device 2235, which is illustrated in detail in Figure 9.
  • the CPA device 2235 is illustrated in detail in Figure 9.
  • the 2235 can advantageously be configured to interact with the surfaces 127, 128 of the coupling section 1 16 defined by the ribs 125, 126 between the notches 1 19, 120 and 121 , 122 of the ring 102 of the standard igniter holder 100, while serving as an element making it possible to ensure that the locking lances 2217, 2218 of the connector 2200 are not deflected in particular in the delivery state, and more particularly when the connector 2200 is correctly plugged into the igniter holder 100.
  • the CPA device 2235 can therefore comprise a contact surface, defined in the embodiment illustrated in Figure 9 by the two parts 2236, 2239, from which one or more secondary locking elements can extend, here two lateral tabs 2237, 2238 whereof the head 2240, 2241 can be slightly folded inward and whereof the end can define a respective contact surface 2242, 2243 configured to serve as a contact surface with the surfaces 127, 128 defined by the ribs 125, 126 between the notches 1 19, 120 and 121 , 122, respectively, during coupling.
  • the locking tabs 2237, 2238 in particular the head 2240, 2241 of each tab 2237, 2238, can be arranged behind the locking lances 2217, 2218 so as to wedge them and prevent deflection thereof.
  • This prevention can be reinforced by contact zones 2244, 2245 and 2246, 2247 on each side of the tabs 2237, 2238, respectively, on which tabs 2265, 2266, 2267, 2268 provided on the locking lances 2217, 2218, at least partially visible in Figure 8, can abut in the delivery state.
  • Figure 9 also shows that the CPA device 2235 can comprise lateral slots 2249, 2250 defining two grooves, comparable to the groove 1221 of the first embodiment illustrated in Figure 3, but without the transverse slot 1248, and therefore suitable for receiving the longitudinal rods 2223, 2224 of the springs 2221 , 2222 in the second embodiment.
  • the respective longitudinal rods 2223, 2224 of the springs 2221 , 2222 can be received in the lateral slots 2249, 2250, as illustrated by the following figures, and more particularly Figures 12 and 13C.
  • the inward folding defined by the heads 2240, 2241 of the locking tabs 2237, 2238 makes it possible, once the connector 2200 is correctly plugged into the igniter holder 100, to deflect the tabs 2237, 2238 using lugs 2269, 2270 of the connection part 2206 of the main housing 2201 , and to thus return from a maximal relative loaded state to the delivery state to block the locking lances 2217, 2218 and therefore to maintain the locking of the pyrotechnic connector 100, 2200, as will be described in more detail relative to Figures 12 and 13A to 13C.
  • Figure 8 also illustrates that the connector 2200 may comprise a cover 2202 that can be fastened to the main housing 2201.
  • the cover 2202 can comprise locking elements such as locking lances 2255, 2256 allowing locking with associated locking zones 2258, 2259 of the main housing 2201 , as well as a locking zone 2257 that can be locked by an associated locking lug 2260 of the main housing 2201 .
  • the cover 2202 can also comprise contact or stop surfaces 2271 , 2272 delimiting a rise of the CPA device 2235 in a loaded state, as well as grooves 2252, 2253 making it possible, also in a loaded state, to receive the rods 2223, 2224, as illustrated in Figure 12.
  • Figures 10A and 10B, 1 1 , 12 and 13A to 13C illustrate one example of an embodiment of a coupling or connection sequence of the connector 2200 of the embodiment illustrated in Figures 8 and 9 with the igniter holder 100 of the example illustrated in Figure 1.
  • the sequence will be outlined from a step in which the connector 2200 is in the delivery state and comes just into contact with the igniter holder 100, going through the charged state steps of the connector 2200, in particular of the spring 2221 under the effect of the movement of the CPA device 2235, until a step where the connector 2200 is correctly plugged in, and lastly completely locked to the igniter holder 100 and is therefore returned to the delivery state.
  • Figures 10A and 10B illustrate a step where the connector 2200, in its delivery state, comes into contact with the standard igniter holder 100.
  • Figure 10B corresponds to the overall view of Figure 10A, in which the base part 101 and the main housing 2201 have nevertheless been made transparent so as to see the CPA device 2235 and the ring or retaining part 102.
  • the connector 2200 can be inserted into the igniter holder 100 in an insertion path in a direction embodied by arrow 300, which can essentially be perpendicular to the coupling section 1 16 of the igniter holder 100.
  • the connector 2200 is therefore not truly plugged into the igniter holder 100, but rests just in contact therewith.
  • the springs 2221 , 2222 are in their relaxed state.
  • the tabs 2225, 2226 of the springs 2221 , 2222 are wedged by the zones 2231 , 2232 of the main housing 2201 , and at least the end of the rod 2223, 2224 of each spring 2221 , 2222 is housed in a respective slot 2249, 2250 of the CPA device 2235.
  • the turns 2227, 2228 of the springs 2221 , 2222 are arranged around axes 2233, 2234 provided in the main housing 2201 according to one preferred alternative of one embodiment.
  • the delivery state of the springs can correspond to a minimal relative loaded state relative to the loaded states.
  • the load in the delivery state will then be a minimal relative load lower than that of a loaded state like those described in more detail relative Figures 1 1 and 12.
  • Figure 10A further illustrates that in the delivery state, the CPA device 2235 is in the title position, such that its contact surfaces 2244, 2245 and 2246, 2247 rest in contact with the tabs 2265, 2266 and 2267, 2268 of the two locking lances 2217, 2218, respectively, and the lateral tabs 2237, 2238 of the CPA device 2235 prevent a deflection of the locking lances 2217, 2218 in the spaces 1 17, 1 18 of the ring 102 and the corresponding spaces 2219, 2220 of the connection part 2206, which arrives in the ring 102.
  • the connection part 2206 cannot advance further in the ring 102, since the lances 2217, 2218 will abut against the edge 131 of the base part 101.
  • Figures 10B also illustrates that in this step, the heads 2240 and 2241 of the locking tabs 2237, 2238 rest bearing on the coupling section 1 16 and in particular on the surfaces 127, 128 of the ribs 125, 126 of the ring 102.
  • a force exerted on the connector 2200 in the insertion direction 300 to continue the coupling will then cause a movement, in particular a rising, of the CPA device 2235 in an ejection direction 301 opposite the insertion direction 300, then transitioning the connector 2200 to a loaded state, as illustrated by Figure 1 1.
  • Figure 1 1 reiterates the view of Figure 10A following the continuation of the insertion movement of the connector 2200 into the igniter holder 100.
  • connection part 2206 of the connector 2200 therefore penetrates a bit further into the ring 102 of the igniter holder 100 than in the step illustrated in Figures 10A and 10B.
  • a beginning of electrical contact can be initiated between the pins 1 14, 1 15 and the mating contacts 2213, 2214, as in the step illustrated in Figure 5A for the first embodiment.
  • the CPA device 2235 has been moved in the direction 301 and therefore rises along the connection part 2206 under the action of the thrust exerted by the contact surfaces 2242, 2243 of the locking tabs 2237, 2238 on the surfaces 127, 128 of the coupling section 1 16 of the ring 102.
  • the contact surfaces 2244, 2245 and 2246, 2247 of the CPA device 2235 are therefore brought upward relative to the tabs 2265, 2266 and 2267, 2268 of the locking lances 2217, 2218.
  • the heads 2240, 2241 of the secondary locking tabs 2237, 2238 are no longer housed behind the locking lances 2217, 2218.
  • the locking lances 2217, 2218 can be deflected, and the connection part 2206 can advance further in the ring 102 without the lances 2217, 2218 abutting against the base part 101.
  • the locking lances 2217, 2218 are therefore deflected and partially inserted into the igniter holder 100.
  • the movement of the CPA device 2235 in the rising direction 301 relative to the connection part 2206 causes loading of the locking springs 2221 , 2222, the respective longitudinal rods 2223, 2224 of which undergo a pressure directly transmitted by means of the slots 2249, 2250 of the CPA device 2235.
  • the springs 2221 , 2222 are therefore in a loaded state equivalent to that of the spring 1221 in the step illustrated in Figures 5A and 5B in the case of the first embodiment.
  • the longitudinal rods 2223, 2224 are then further partially housed in the lateral slots 2249, 2250 provided in the CPA device 2235 than in the delivery state illustrated in Figures 10A and 10B.
  • each spring 2221 , 2222 will automatically push the CPA device 2235 back in direction 300, which will result in an automatic ejection of the connector 2200 in the ejection direction 301 .
  • An incorrect connection can thus be avoided automatically.
  • the mating load of the springs 2221 , 2222 can be equivalent to that of the single spring 1221 or 3221 of the first and third embodiments, but that only one of the two springs 2221 , 2222 nevertheless suffices to perform the automatic ejection.
  • the surfaces 2271 , 2272 of the cover 2202 limit the rise of the CPA device 2235 in the direction 301 and therefore also that of the springs 2221 , 2222, the rods 2223, 2224 of which can also be partially received abutting in the receiving grooves 2252, 2253 of the cover 2202.
  • the contact pins 1 14, 1 15 have advanced further in the contacts 2213, 2214 relative to the step illustrated in Figure 1 1 , as emerges from Figure 12.
  • Figure 12 further illustrates that in this loaded state, which can therefore be a maximal relative loaded state of the springs 2221 , 2222 relative to the intermediate loaded states like that illustrated in Figure 1 1 , the CPA device 2235 having been pushed back against the cover 2202, the locking lances 2217, 2218, which could have been deflected in the openings 1 17, 1 18 and/or in the openings 2219, 2220 in the step illustrated in Figure 1 1 , have now advanced enough to allow the correct insertion of the connection part 2206 into the ring 102 and the main locking of the locking lances 2217, 2218, which have now returned to their delivery state, with the locking zones 103, 104 of the base part 101.
  • FIG. 12 The cross-section of Figure 12 further illustrates that the rising of the CPA device 2235 has been guided by the action of the lugs 2269, 2270 of the connection part 2206 on the heads 2240, 2241 of the locking tabs 2237, 2238 of the CPA device 2235.
  • the rising of the CPA device 2235 in the maximal relative load state, is therefore such that the play of the biased surfaces of the heads 2240, 2241 of the locking tabs 2237, 2238 on the release surfaces or lugs 2269, 2270 has caused a deflection of the tabs 2237, 2238 in the directions indicated by the arrows 302, 303, respectively, toward the notches 2263, 2264 of the housing 2201 .
  • This deflection allows the secondary locking tabs 2237, 2238, in particular the heads 2240, 2241 , to be released relative to the contact surfaces 127, 128.
  • the maximal relative load of the locking springs 2221 , 2222 will henceforth automatically push the CPA device 2235 in the direction 300.
  • the CPA device 2235 which at this stage is therefore no longer blocked by the surfaces 127, 128 of the ribs 125, 126 due to the deflection of the locking tabs 2237, 2238, will be able to slide automatically inside the igniter holder 100, and regain its initial delivery state, as illustrated by Figures 13A to 13C.
  • Figure 13A reiterates the view of Figures 10A and 1 1 , this time with the connector 2200 correctly inserted and completely locked in the igniter holder 100.
  • Figure 13B reiterates the view of Figure 13A, but concealing the base part 101 , which makes it possible to see that the connector 2200 has indeed been returned to its delivery state, as previously described.
  • Figure 13C corresponds to Figures 13A and 13B, but in the same cross-section as that of Figure 12.
  • the connector 2200 is therefore essentially in the same state as that described relative to Figures 10A and 10B, with the exception that it is physically present plugged into and locked in the igniter holder 100.
  • a voluntary manual disconnection does, however, remain possible if an operator manually raises the CPA device 2235 toward a completely loaded state like that illustrated in Figure 12 and pulls on the connector 2200 in the direction 301 in order to release the locking lances 2217, 2218 from the locking zones 103, 104.
  • FIG 14 illustrates an example of a third embodiment of a connector 3200 according to the present invention, in an exploded view.
  • the connector 3200 is a squib connector designed to be plugged into the standard igniter holder receptacle 100 of the example illustrated in Figure 1.
  • the connector 3200 therefore makes it possible to connect the conductive cables 3203, 3204 for example coming from control unit of an impact and/or vibration sensor for a safety restraint system to a pyrotechnic charge connected to the igniter holder receptacle 100.
  • the connector 3200 can comprise a main housing 3201 with a main part 3205 with an essentially parallelepiped geometry comprising a housing 3207 for a filtering ferrite 3208 arranged around the cables 3203, 3204, as well as passage openings 3215, 3216 for the cables 3203, 3204.
  • the main housing 3201 can also comprise a connection part 3206 essentially perpendicular to the main part 3205, with a geometry suitable for being plugged into the space between the inner body 124 and the outer body 123 of the retaining element 102 of the receptacle 100, and therefore essentially cylindrical.
  • connection part 3206 can in particular comprise two contact openings 3209, 3210 mated to the contact openings 1 12, 1 13 of the receptacle 100, able to receive the contacts 3213, 3214 of the terminals 321 1 , 3212 of the two cables 3203, 3204, the contacts 3213, 3214 being mated to the pins 1 14, 1 15.
  • connection part 3206 can comprise at least one locking element, here two locking lances 3217, 3218 (one of which is not visible in Figure 14 but appears in Figures 18B and 19C), which are able to be deflected in a respective deflection space 3219, 3220 in order to allow an insertion into the receptacle 100 and able, in their delivery position, i.e., when they are not deflected, to perform a main locking with the locking zones 103, 104 of the standard receptacle 100 when the connector 3200 is correctly inserted therein.
  • two locking lances 3217, 3218 one of which is not visible in Figure 14 but appears in Figures 18B and 19C
  • the connector 3200 can comprise a locking spring 3221 that can preferably be a formed wire spring-rod.
  • the spring 3221 can preferably be U-shaped and therefore comprise a transverse rod 3222 extended by two lateral rods 3223, 3224, the latter advantageously being able to end with tabs 3225, 3226 essentially perpendicular to the lateral rods 3223, 3224 when the spring is in its delivery position or state, i.e., when the spring is essentially relaxed.
  • tension may exist in the delivery state, which is then a minimal tension relative to a tension when the spring 3221 is in a loaded state.
  • the tabs 3225, 3226 of the spring 3221 can be blocked by a maintaining zones 3231 , 3232 of the main housing 3201.
  • the spring 3221 can also be of the "mousetrap" type and comprise turn parts 3227, 3228 between the lateral rods 3223, 3224 and the tabs 3225, 3226.
  • Figure 14 illustrates that the main housing 3201 can include elements 3233, 3234 forming a respective axis on each side of the housing 3201 around which the turns 3227, 3228 of the spring 3221 are arranged.
  • Each of the lateral rods 3223, 3224 may further comprise a recess zone 3229, 3230, which can essentially be a valley, or V- shaped, that will be in contact with a respective sloped contact surface 3269, 3270 of the connector position assurance device or CPA device 3235 visible in Figure 14 and outlined in Figure 15.
  • the connector 3200 can also comprise a CPA device 3235, illustrated in detail in Figure 15.
  • the CPA device 3235 can advantageously be configured to interact with notches 1 19, 120, 121 , 122 of the retaining element 102 of the standard receptacle 100, while also serving as an element ensuring that the locking lances 3217, 3218 are not deflected in particular in the delivery state, and more particularly when the connector 3200 is correctly plugged into the receptacle 100.
  • the CPA device 3235 can therefore comprise a contact surface 3236 from which two tongues 3237, 3238 extend each comprising lugs 3239, 3240 and 3241 , 3242 configured to serve as contact surfaces with notches 1 19, 120 and 121 , 122, respectively, during coupling.
  • the tongues 3237, 3238 are arranged behind the locking lances 3217, 3218 and prevent a deflection thereof. This prevention can be reinforced by contact zones 3243, 3244 and 3245, 3246 on each side of the tongues 3237, 3238, respectively, on which tabs 3265, 3266, 3267, 3268 of the locking lances 3217, 3218 abut in the delivery state.
  • the contact surface 3236 can also comprise recesses 3247, 3248 defining locking zones making it possible, jointly with lugs 3261 , 3262 of the housing 3201 , to limit the movement of the CPA device 3235 essentially to a translation along the connection part 3206, i.e., essentially in a coupling path or insertion path 300 of the connector 3200 with the receptacle 100, as illustrated by the following figures.
  • Figure 15 also shows that the CPA device 3235 can comprise inner slots 3249, 3250 ending with biased surfaces 3251 , 3252 making it possible, in a loaded state, once the connector 3200 is correctly plugged into the receptacle 100, to deflect the tongues 3237, 3238 via lugs 3263, 3264 of the connection part 3206 of the main housing 3201 , and to thus return it to the delivery state in order to block the locking lances 3217, 3218 and therefore ensure maintenance of the locking of the squib connector system 100, 3200, as will be outlined in more detail in reference to Figures 18B and following.
  • Figure 14 also illustrates that the connector 3200 can comprise a cover 3202 able to be fastened to the main housing 3201 .
  • the cover 3202 can comprise locking elements such as locking lances 3255, 3256 allowing locking with associated locking zones 3258, 3259 of the main housing 3201 , as well as a locking zone 3257 that can be locked by an associated locking lug 3260 of the main housing 3201 .
  • the cover 3202 can also comprise a maintaining tongue 3254 for the filtering ferrite 3208, as well as a reception zone 3253 limiting a movement of the spring 3221 when it is loaded, as well as contact surfaces 3271 , 3272 limiting a rise of the CPA device 3235 in a loaded state.
  • Figures 16A and 16B, 17, 18A and 18B and 19A to 19C illustrate a coupling sequence from a step in which the connector 3200 is in the delivery state and comes into contact with the receptacle 100, by way of the loaded state steps of the connector 3200, in particular of the spring 3221 under the effect of the movement of the CPA device 3235, to a step where the connector 3200 is correctly plugged in and locked to the receptacle 100 and is therefore returned to the delivery state.
  • Figures 16A and 16B illustrate a step where the connector 3200, in its delivery state, comes into contact with the standard igniter holder receptacle 100.
  • Figure 16B corresponds to the view of Figure 16A, in which the receptacle part 101 and the main housing 3201 have, however, been made transparent so as to see the CPA device 3235 and the retaining part 102.
  • the connector 3200 can be inserted in the receptacle 100 in an insertion path in a direction embodied by arrow 300 in Figure 16A. In this step, the connector 3200 is therefore not truly plugged into the receptacle 100, but remains just in contact with it. In this step, there is not yet an electrical contact between the contact pins 1 14, 1 15 of the receptacle 100 and the contacts 3213, 3214 of the squib connector 3200.
  • the spring 3221 In the delivery state illustrated in Figures 16A and 16B, the spring 3221 is in its relaxed state. In particular, the tabs 3225, 3226 of the spring are blocked in the zones 3231 , 3232 of the main housing 3201 , and the recesses 3229, 3230 remain on the slopes 3269, 3270 of the CPA device 3235.
  • Figure 16A also illustrates that the turns 3227, 3228 of the spring 3221 are arranged around the axes 3233, 3234 of the main housing 3201 .
  • the delivery state of the spring can correspond to a minimal relative load state relative to the loaded states. Thus, in alternatives, if the spring 3221 is slightly loaded in the delivery state, its load is then, in any case, lower than that of the loaded state as described relative to Figures 17, 18A and 18B.
  • Figure 16A further illustrates that in the delivery state, the CPA device 3235 is in its idle position, such that its contact surfaces 3243, 3244 and 3245, 3246 are in contact with tabs 3265, 3266 and 3267, 3268 of two locking lances 3217, 3218, and the lateral tongues 3237, 3238 of the CPA device 3235 prevent a deflection of the locking lances
  • FIG. 16B illustrates that in this step, the lugs 3239, 3240 and 3241 , 3242 of the tongues 3237, 3238 bear against the notches 1 19, 120 and 121 , 122 of the retaining element 102.
  • a force exerted on the connector 3200 in the insertion direction 300 to continue the coupling will then cause a movement, in particular a rise, of the CPA device 3235 in an ejection direction 301 opposite the insertion direction 300, then passing through the connector 3200 in a loaded state, as illustrated by Figure 17.
  • Figure 17 reiterates the complete view of Figure 16A, following the continuation of the insertion movement of the connector 3200 into the receptacle 100.
  • the connection part 3206 of the connector 3200 therefore penetrates a bit further into the retaining element 102 of the receptacle 100 then in the step illustrated in Figures 16A and 16B.
  • the CPA device 3235 is moved in the direction 301 and rises along the connection part 3206 under the action of the thrust of the lugs 3239, 3240 and 3241 , 3242 of the tongues 3237, 3238 on the notches 1 19, 120 and 121 , 122 of the retaining element 102.
  • the contact surfaces 3243, 3244 and 3245, 3246 of the CPA device 3235 are therefore raised relative to the tabs 3265, 3266 and 3267, 3268 of the locking lances 3217, 3218, but not yet enough to release them and allow a deflection. Furthermore, the tongues 3237, 3238 are still housed behind the locking lances 3217,
  • connection part 3206 cannot advance further in the retaining element 102, because the lances 3217, 3218 abut against the receptacle part 101 .
  • the movement of the CPA device 3235 in the rising direction 301 relative to the connection part 3206 causes a loading of the locking spring 3221 , the recesses 3229, 3230 of which experience pressure transmitted by the surfaces 3269, 3270 of the CPA device 3235.
  • the spring 3221 is therefore in a loaded state.
  • Figure 18A in particular reiterates the view of Figures 16A and 17, and Figure 18B is a cross-section along the coupling direction 300, 301.
  • the receiving zone 3253 of the cover 3202 also limits the rise of the spring 3221 , in particular, it can produce a stop for the transverse rod 3222 of the spring 3221.
  • the contact pins 1 14, 1 15 are received in the contacts 3213, 3214, as illustrated in Figure 18B.
  • Figures 18A and 18B illustrate that in this loaded step, which can therefore be a maximal relative loaded state of the spring 3221 relative to intermediate loaded states like those shown in Figure 17, the CPA device 3235 having been pushed back against the cover 3202, the tabs 3265, 3266 and 3267, 3268 have been completely released and the tongues 3237, 3238 no longer prevent a deflection of the locking lances 3217, 3218.
  • the locking lances 3217, 3218 have been able to be deflected in the openings 1 17, 1 18 and/or in the orifices 3219, 3220, which has therefore allowed the correct insertion of the connection part 3206 into the retaining element 102 and the main locking of the locking lances 3217, 3218, which have returned to their initial state after the deflection, with the locking zones 103, 104 of the receptacle part 101.
  • the cross-section of Figure 18B further illustrates that the rising of the CPA device
  • Figure 19A reiterates the view of Figures 16A, 17 and 18A, this time with the connector 3200 correctly inserted and locked in the receptacle 100.
  • Figure 19B reiterates the view of Figure 19A, but concealing the receptacle part 101 , which makes it possible to see that the connector 3200 has indeed returned to its delivery state, as previously described.
  • Figure 19C corresponds to Figures 19A and 19B, but in a cross-section similar to that of Figure 18B.
  • the invention is therefore of interest for pluggable connectors in receptacles arranged in limited spaces and which may be subjected to vibrations and/or impacts.
  • the invention is advantageous in the field of automobile connections, in particular for safety restraint systems comprising pyrotechnic connectors able to be plugged in the standard igniter holders of an automobile builder.
  • One advantage relative to the known state of the art is the integration of the spring locking system combined with the secondary locking allowing, on the one hand, an automatic ejection of a particular connector if it is not correctly plugged into an igniter holder, and on the other hand an automatic transition to the completely locked state of the connector as previously described.
  • a locking spring with a U-shaped geometry, in which case the invention has the advantage that the spring is arranged in a more advantageous position than the known springs for pyrotechnic connectors of the state of the art.
  • the same advantageous effects can be obtained by using other locking spring geometries.
  • a single spring is sufficient to carry out the present invention, it is also possible to obtain the same advantageous effects by using more than one single locking spring, in particular, in one preferred alternative, two essentially symmetrical springs able to be equivalent to the U-shaped spring that would not include the transverse rod, and therefore also advantageously able to combine a helical geometry with rods perpendicular to the axis of the helical part.
  • the coupling movement can be transmitted directly from the CPA device to the spring, which will go from a delivery state to a loaded state, without, however, risking deformations or weakening of the spring.
  • the invention has the advantage that the connector, in particular the spring, returns to its delivery state, in which all of its elements that can be moved or deflected are essentially idle or in a minimal relative tension state.
  • the invention advantageously makes it possible to combine the automatic ejection functionality with the automation of the connector position assurance functionality, and therefore secondary locking of the connector when it is correctly plugged into the counter- connector.
  • a CPA device of a connector according to the present invention will be used both to transmit a coupling movement directly to the spring, transitioning the latter from its delivery state to a loaded state, and therefore automatically, under the effect of the load of the spring, push the connector back with respect to the mating connector as long as the force exerted to couple the latter parts is not sufficient to plug them into one another correctly; and to ensure the maintenance of the main locking by a secondary locking by automatically ensuring that the main locking elements of the connector cannot be deflected once the connector is correctly plugged into its counter-connector.
  • igniter holder 100 igniter holder, igniter holder receptacle

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

L'invention porte sur un connecteur électrique (2200), en particulier un connecteur pyrotechnique, apte à être couplé à un connecteur électrique d'accouplement (100) dans une première direction de couplage (300), comprenant : un boîtier principal (2201) ; un ressort de verrouillage (2221) détendu dans un état de distribution ; un élément d'assurance de position de connecteur (2235) déplaçable afin de piloter une tension du ressort (2221) opposée au couplage pendant que le connecteur (2200) et le connecteur d'accouplement (100) ne sont pas correctement couplés ; et au moins un élément de verrouillage principal (2217, 2218) apte à être dévié durant un couplage et dont la position de distribution rend possible le fait de verrouiller le connecteur (2200) sur le connecteur d'accouplement (100) lorsqu'ils sont correctement couplés. L'élément d'assurance de position de connecteur (2235) est en outre configuré pour empêcher une déviation dudit au moins un élément de verrouillage principal (2217, 2218) dans l'état de distribution.
PCT/EP2014/069684 2013-09-16 2014-09-16 Connecteur électrique pour un système de retenue de sécurité WO2015036611A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201480050867.6A CN105531886B (zh) 2013-09-16 2014-09-16 一种用于安全约束系统的电连接器

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
FR1358887A FR3010841B1 (fr) 2013-09-16 2013-09-16 Connecteur a verrouillage a ressort
FR1358887 2013-09-16
FR1361573A FR3013912B1 (fr) 2013-11-25 2013-11-25 Connecteur electrique pour systeme de retenue de securite
FR1361573 2013-11-25
EP14290070 2014-03-19
EP14290070.3 2014-03-19
EP14290152.9A EP2876745B1 (fr) 2013-11-25 2014-05-23 Connecteur électrique pour système de retenue de sécurité
EP14290152.9 2014-05-23

Publications (1)

Publication Number Publication Date
WO2015036611A1 true WO2015036611A1 (fr) 2015-03-19

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Application Number Title Priority Date Filing Date
PCT/EP2014/069684 WO2015036611A1 (fr) 2013-09-16 2014-09-16 Connecteur électrique pour un système de retenue de sécurité

Country Status (1)

Country Link
WO (1) WO2015036611A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209163A1 (fr) * 2015-06-26 2016-12-29 Mea Technologies Pte. Ltd. Connecteur d'amorce sans shunt
EP4145645A1 (fr) * 2021-09-01 2023-03-08 J.S.T. Mfg. Co., Ltd. Connecteur électrique et procédés

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142799A (en) * 1998-11-03 2000-11-07 Hirschmann Austria Gmbh Electrical plug connection
US20010009818A1 (en) * 2000-01-25 2001-07-26 Michael Hirschmann Contact carrier
DE10202920A1 (de) * 2002-01-25 2003-08-21 Tyco Electronics Amp Gmbh Elektrische Steckverbindung
EP1898498A2 (fr) * 2006-09-08 2008-03-12 Mea Technologies Pte. Tld. Connecteur électrique
WO2012055719A1 (fr) * 2010-10-29 2012-05-03 Fci Automotive Holding Ensemble connecteur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6142799A (en) * 1998-11-03 2000-11-07 Hirschmann Austria Gmbh Electrical plug connection
US20010009818A1 (en) * 2000-01-25 2001-07-26 Michael Hirschmann Contact carrier
DE10202920A1 (de) * 2002-01-25 2003-08-21 Tyco Electronics Amp Gmbh Elektrische Steckverbindung
EP1898498A2 (fr) * 2006-09-08 2008-03-12 Mea Technologies Pte. Tld. Connecteur électrique
WO2012055719A1 (fr) * 2010-10-29 2012-05-03 Fci Automotive Holding Ensemble connecteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016209163A1 (fr) * 2015-06-26 2016-12-29 Mea Technologies Pte. Ltd. Connecteur d'amorce sans shunt
EP4145645A1 (fr) * 2021-09-01 2023-03-08 J.S.T. Mfg. Co., Ltd. Connecteur électrique et procédés

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