WO2012059522A1 - Dispositif destiné à délivrer un gaz dans un système de protection de personne d'un véhicule - Google Patents

Dispositif destiné à délivrer un gaz dans un système de protection de personne d'un véhicule Download PDF

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Publication number
WO2012059522A1
WO2012059522A1 PCT/EP2011/069269 EP2011069269W WO2012059522A1 WO 2012059522 A1 WO2012059522 A1 WO 2012059522A1 EP 2011069269 W EP2011069269 W EP 2011069269W WO 2012059522 A1 WO2012059522 A1 WO 2012059522A1
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WO
WIPO (PCT)
Prior art keywords
gas pressure
gas
pin
pressure vessel
opening
Prior art date
Application number
PCT/EP2011/069269
Other languages
German (de)
English (en)
Inventor
Martin Breuninger
Christian Weyrich
Hans-Peter Sendelbach
Mirko Korth
Benedikt Heudorfer
Gerhard Klingauf
Original Assignee
Takata-Petri Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takata-Petri Ag filed Critical Takata-Petri Ag
Publication of WO2012059522A1 publication Critical patent/WO2012059522A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B60R21/274—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas characterised by means to rupture or open the fluid source
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/268—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
    • B60R2021/2685—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas comprising a plurality of pressure chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output

Definitions

  • the invention relates to a device for providing gas in a personal protection system of a vehicle.
  • pyrotechnic gas generators which provide a defined amount of combustion gas after triggering. However, these are only limited to one trip.
  • the present invention has for its object to provide a device for providing gas in a personal protection system of a vehicle that allows a multiple triggering of a personal protection system of a vehicle.
  • the present invention provides an apparatus for providing gas in a personal protection system of a vehicle, comprising:
  • the guide channel has a gas outlet for discharging the gas which is formed or released when at least one of the gas pressure vessels is opened,
  • each of the gas pressure vessel is associated with an opening mechanism, and the opening mechanisms are actuated independently of each other and accordingly the individual gas pressure vessel in conjunction with temporally separate events are apparent.
  • the opening mechanisms are independently operable means that the individual gas pressure vessels can be opened in conjunction with events separated in time, e.g. B. in conjunction with two temporally separated pre-crash detections.
  • the time separation can include minutes, hours, days or even years.
  • the opening mechanism may cause an opening of the gas pressure vessel via a pyrotechnic drive, via an electromechanical drive or via the triggering of a prestressed spring.
  • the opening mechanism is in each case designed such that it comprises at least one movable element for opening the gas pressure container.
  • the effective direction of the opening of the gas pressure vessel by the movable element is substantially perpendicular to the guide channel.
  • vertical sections are also to be understood to be vertical, if the guide channel has a curvature.
  • the opening mechanism of the device for providing gas in a personal protection system of a vehicle has a pin in one embodiment as a movable element for opening the gas pressure vessel.
  • the operation of the pin can be done in several ways.
  • a piston is moved when triggering the opening mechanism such that the pin opens the gas pressure vessel.
  • the pin is actuated by gas released via the opening mechanism.
  • a projectile is accelerated, which opens the associated gas pressure vessel.
  • a plurality of thrust pistons may be provided which are each coupled to a pin or may be operatively connected.
  • the thrust piston When triggering a pyrotechnic unit, the thrust piston is moved. The kinetic energy of the thrust piston acts directly on the associated pin.
  • the pin is caused to open a gas pressure vessel, for example, by piercing a membrane of the gas pressure vessel.
  • the gas pressure vessel may be gas-tightly connected to a housing of the device. This can be done for example via a thread, gluing, a press-fit, a frictional connection or a bayonet lock.
  • the triggering or opening of the gas pressure vessel can be offset in time or at the same time. In particular, with a simultaneous opening is ensured that a sufficient filling rate of the gas is provided for a personal protection system of a vehicle.
  • the movable elements may have different sizes and shapes.
  • the movable elements may have the shape of a pin.
  • the pins have a gas passage section, which ensures a flow of the gas from the gas pressure vessel into the guide channel when the pin penetrates into the seal of the gas pressure vessel.
  • gas passage portions may be formed by notches in the body of the movable member, such as by a longitudinal groove, a transverse groove or a circular recess, wherein the gas passage portions could extend over the entire length of the movable member or even over only a portion of the movable member.
  • the pins may also have a gas passage portion provided by a bore of the movable member, wherein the gas passage portions may extend over the entire length of the movable member or even only over a portion of the movable member.
  • the movable elements can also have no gas passage section.
  • the opening of a gas pressure vessel via the shooting of a projectile could take place, for example, passes through a membrane into the interior of the gas pressure vessel, thus exposing a portion in the membrane through which the gas flows from the gas pressure vessel into the guide channel.
  • the entire diameter of the "puncture” is immediately made available to the gas flowing out of the gas pressure vessel into the guide channel gas.
  • the seal or membrane can also be brought to bursting by the shooting of a movable element, such as a projectile or pin.
  • a movable element such as a projectile or pin.
  • a lighter in particular a pyrotechnic lighter could be provided.
  • the lighter could be equipped with a ceremonieszündladung.
  • nitrogen gas, argon, neon, helium, carbon dioxide or a mixture of said gases is provided as the filling gas.
  • the gas pressure vessel can be connected via a temperature-stable, band-shaped connecting element. This reduces the risk of the gas pressure vessels, in case they should burst in the event of a fire, not becoming dangerous "bullets.”
  • the increased mass reduces "flying distance” and the increased surface area makes it possible to tilt individual areas, thus reducing the danger a development of such eventual "bullets" is significantly reduced.
  • the outflow cross sections of the openings of the gas pressure vessel, via the variation of the pins and the membrane diameter, between individual gas pressure vessels are varied to adjust for individual gas pressure vessel modified flow rate for the released gas.
  • the outflow cross-section is defined by the area which is available to the gas for discharge from the gas pressure vessel in the guide channel in the event of triggering.
  • the outflow velocity could thus be determined by a variation of the pins, such as by different sizes of Gas be worked into a bag, or by the shape of the pins, which defines the size of the "puncture” or "puncture” for individual gas pressure bottles. Furthermore, the outflow velocity, in the case of a rupture of the seal or the membrane could be determined by the diameter of the seal or membrane.
  • the axes of the gas pressure vessel are arranged substantially parallel and the sealed by a seal side of the gas pressure vessel point in the same direction.
  • components of the thrust piston such as cylinder walls or igniter clamps, can be realized in a form-fitting manner from the housing of the device. Through the integration of individual component functions of the thrust piston in the housing, a partial reduction can be achieved.
  • the solution according to the invention can generally be used in all vehicles in which a multiple filling of actuators is desired.
  • a use in all vehicles is provided, which should receive a reversible pre-crash side protection system and in which the corresponding sensors is kept.
  • the solution according to the invention is associated with numerous advantages.
  • the inventive solution to the problem of "multiple triggerability" of a personal protection system within a vehicle is characterized by the fact that only a small amount of technical effort is necessary to such a Device is ready for use after a first release and provision of gas without further action in the sense that it is ready for a re-triggering.
  • the tightness of the system is unproblematic over the entire lifetime due to the sealed gas pressure vessel. Thus, we ensure full functionality over the entire lifetime.
  • pyrotechnics as part of the opening mechanism allows a fast and high power delivery with light weight and small space. Furthermore, a direct electrical controllability of the opening mechanism is made possible by the use of pyrotechnics. This allows a simple link with intelligent control systems of passenger protection systems of vehicles. Such triggering by pyrotechnics are state of the art. Thus, as part of the opening mechanism, a proven system for reliability and safety is used.
  • the device according to the invention is easily scalable to any number of triggering and different bottle sizes of the gas pressure vessel and thus very variable.
  • the device according to the invention is characterized in particular by a space-and weight-optimized solution, in comparison to other multiple firing, from.
  • the device according to the invention is only associated with the restriction that the number of trips for a personal protection system is limited to a limited number of trips.
  • the invention will be explained in more detail with reference to the figures 1 to 10 of the drawing with reference to several embodiments. Show it:
  • Fig. 1 shows a first embodiment of a device for providing
  • Gas for a personal protection system of a vehicle comprising a pyrotechnic thrust piston coupled to a pin
  • 1 A is a schematic cross section of an embodiment of a pyrotechnic thrust piston and the position of the pyrotechnic thrust piston before a triggering case.
  • Fig. 1 B the pyrotechnic thrust piston of Figure 1 A after a triggering case.
  • FIG. 2 shows a second exemplary embodiment of a device for providing gas with a pyrotechnic thrust piston with an integrated pin, the thrust piston projecting into a communicating guide channel of the device;
  • Fig. 3 shows a third embodiment with a lighter and with a
  • Baffles for driving a pin wherein a triggering of the opening mechanism via the dynamics of an igniter gas stream takes place;
  • Fig. 4 shows a fourth embodiment with a lighter, a
  • Igniter cap and a spaced, exposed pin wherein a triggering of an opening mechanism on the dynamics of an igniter gas flow takes place and the free-flying pin a
  • 5A to 5N are schematic representations of various embodiments of a movable element for opening a gas pressure vessel with and without gas flow section;
  • 6A a fifth embodiment with a lighter and with a to
  • Igniter spaced, freely movable piston with integrated pin which is removed after triggering the pin by gas pressure from the gas pressure vessel;
  • 6B shows a sixth embodiment with a lighter and with an igniter-spaced, freely movable piston with integrated pin, wherein after triggering the pin is removed by a spring from the gas pressure vessel; 7 shows a seventh embodiment with a pyrotechnic
  • Diaphragm of a pyrotechnic thrust piston shows a ninth exemplary embodiment, wherein a triggering of an opening mechanism takes place by means of a pre-crash sensor system and / or an in-dash sensor system.
  • Opening mechanism by a pre-crash sensor and / or InCrash sensor is done.
  • Fig. 10 is a schematic representation of the operation of the pre-crash
  • FIG. 1 shows a device for providing gas, which has a plurality of sealed gas pressure vessels 1, which communicate with their bottle necks 1 1 via a communicating guide channel 2.
  • the guide channel 2 has a gas outlet 21 for the discharge of the resulting or released gas.
  • the opening of the gas pressure vessel 1 also referred to as gas cartridges
  • an electromechanical drive or the triggering of a prestressed spring are conceivable.
  • a plurality of pyrotechnically actuable thrust pistons 4 ' are provided in a housing 3 of the device, each being arranged in an inner housing 5 having a pyrotechnic propellant charge.
  • a triggering takes place via a triggering electronics 6, which may include a board 61 with electronic components.
  • the pistons 4, in this embodiment pyrotechnic thrust pistons 4 ' are each coupled to a piercing pin 7. When triggered one of the thrust piston 4 'extends this and the associated pin 7 pierces accordingly a membrane which is arranged in one of the corresponding bottle necks 1 1 and the respective gas pressure container 1 closes.
  • the pin 7 is thereby moved largely perpendicular to the axis of the guide channel 2.
  • the direction of action of the opening mechanism is largely aligned perpendicular to the axis of the guide channel 2.
  • FIG. 1A and FIG. 1B show a schematic cross section of the housing 5 and the position of the pyrotechnic thrust piston 4 'before and after the triggering case.
  • FIG. 1A shows the pyrotechnic thrust piston 4 'before the triggering case.
  • Figure 1 B the position of the pyrotechnic thrust piston 4 'is shown after the triggering case. Due to the triggering of a pyrotechnic ignition element 31 of the pyrotechnic thrust piston 4 'is moved out of the housing 5 and thus can interact with the pin 7. Alternatively, parts of the thrust piston 4 'can protrude out of the housing 5 before the triggering event.
  • a drive and movement of the pyrotechnic thrust piston 4 ', and thus also the pin 7 coupled to the thrust piston 4', can also take place in an alternative embodiment via an electromechanical drive or via the triggering of a prestressed spring.
  • the gas cartridges 1 are gas-tightly connected to the housing 3 of the gas source (eg via a thread, gluing, press-fitting, a frictional connection, bayonet closure, etc.).
  • the conversion of an analog or digital trigger signal provided by a sensor system for triggering one or more gas pressure vessels 1 takes place via individual ignition cables 27 which are supplied to the pyrotechnic thrust piston 4 'and are connected to the circuit board 61 of the tripping electronics 6 ,
  • the triggering or opening of the gas cartridges can take place at different times. This is the usual trigger case. First, a false triggering can take place, whereby the content of at least one gas pressure tank is consumed. The device is still ready for use over the entire time window until the next triggering. The same applies to another, later triggering, both wrong and can also be correct. This sequence can be repeated until there are no more gas pressure containers ready for use. The time window between the individual releases can be several years.
  • the triggering or opening of at least two gas cartridges can be done simultaneously in an alternative. Simultaneous tripping is a special case, if a tripping is only possible very late by a pre-crash sensor system or by a conventional sensor system. Here, high performance is required within a short time and ensured by a simultaneous opening of several gas cartridges.
  • the opening can be made via impressions or shooting in of a movable element 7 in the membrane.
  • Embodiments of possible pins 7 are shown in FIG.
  • the pins 7 may have a gas passage section 26, which ensures a flow of gas from the gas pressure vessel 1 into the guide channel 2 in the event of triggering the pin 7 in the seal of the gas pressure vessel 1.
  • Such gas passage portions 26 may be made by notches in the body of the movable member 7, such as a longitudinal groove, a transverse groove or a circular recess, wherein the gas passage portion 26 over the entire length of the movable member 7 or only over a portion of the movable Elements 7 can extend.
  • the pin 7 has a gas passage section 26 with a section-wise notch in the form of a longitudinal groove (FIG. 5C), a transverse groove (FIG. 5H), a section-wise taper (umbrella-shaped, Fig. 5G) or with a moon-shaped embossed longitudinal groove.
  • the pins 7 may be ground obliquely at the lower end which penetrates into the membrane (FIG. 5B, FIG. 5C and FIG. 5H) or have a tip (FIG. 5G). This facilitates penetration into the membrane.
  • the gas passage section 26 allows in case of release, the gas of the gas pressure vessel 1 in the guide channel 2, since it is ensured by the gas passage portion 26 that the pin 7 does not close the hole in the membrane, which he has generated again.
  • the membrane does not burst completely when a pin 7 pierces it.
  • the pin 7 penetrates into the membrane after the opening mechanism has been triggered in such a way that a first part of the gas passage section 26 lies above the diaphragm and a second part of the gas passage section 26 lies below the diaphragm.
  • the gas the gas pressure vessel 1, after the penetration of the pin 7 into the membrane flow via the gas passage section 26 into the guide channel 2.
  • the pin 7 as a gas passage section 26 in sections holes.
  • the pin 7 can have both a bore in the longitudinal direction and a transverse bore, which are interconnected.
  • the pin 7 penetrates into the membrane after the opening mechanism has been triggered in such a way that the transverse bore of the gas passage section 26 lies above the diaphragm and a part of the bore of the gas passage section 26 lies below the diaphragm. Consequently, the gas of the gas pressure vessel 1 can flow into the guide channel 2 via the gas passage section 26 after the penetration of the pin 7 into the membrane.
  • the pin 7 could have a continuous gas passage section 26.
  • the continuous gas passage section 26 has the form of a continuous longitudinal groove (FIG. 51) or a through bore in the longitudinal direction (FIG. 5E, 5J and 5M). Accordingly, the gas of the gas pressure vessel 1 flows after the penetration of the pin 7 into the membrane, regardless of the penetration depth of the pin 7, via the gas passage portion 26 in the guide channel 2 a.
  • the pin 7 may have an oblique bevel (FIGS. 5E and 51) or a flat bevel (FIG. 5J). Alternatively, a tip would be conceivable.
  • the movable elements may also have no gas passage portion 26.
  • An outflow of the gas from the gas pressure vessel 1 in the guide channel 2 is ensured in the case of release by a penetration of the sealing of the gas pressure vessel 1 by a shoot-in of the pin 7, so that the gas from the gas pressure vessel 1, by the "puncture” in the seal of the gas pressure vessel. 1 , flows into the guide channel 2.
  • Such pins 7 may, for example, be in the shape of a cylinder with an oblique section (FIG. 5D), a cylinder with a point (FIG. 5F) or one that penetrates into the membrane in the direction of the lower end. tapered cylinder (Fig. 5K).
  • the pins 7 may include a baffle 71.
  • the gas pressure generated by the lighter 22 acts on the baffles 71 of the respective pins 7 and pushes the pins 7 on the membrane.
  • the pin 7 may have a continuous gas passage section 26 (FIG. 5M) which, after the penetration of the pin 7 into the membrane, allows the gas to flow out into the guide channel 2.
  • the pin 7 see Fig.
  • the pin 7 is injected by a correspondingly high igniter gas pressure in the gas pressure bottles and thus bring the membrane to bursting.
  • almost the entire diameter of the bottle neck 1 1 of the gas pressure vessel 1 is provided for outflow of the gas into the guide channel 2.
  • a plurality of pins 7 can be coupled to one another via an elastic connecting piece 29 (FIG. 5N).
  • the elastic connecting piece 29 is coupled to the housing 3 in such a way that, in the case of triggering for a single gas pressure vessel 1, the igniter gas pressure acts on a partial section of the elastic connecting piece 29 directly adjacent to the lighter 22. Consequently, only this portion of the elastic connecting piece 29 is moved to the membrane and the pin 7 coupled thereto can pierce the membrane.
  • the pin 7 is removed from the membrane by the restoring force of the elastic connecting piece 29 and the "puncture" of the membrane is made available to the outflowing gas from the gas pressure vessel 1 into the guide channel 2.
  • a simultaneous opening of several can be provided Gas pressure vessel 1 by triggering different lighters 22 and thus the filling speed can be increased.
  • pins 7 are merely exemplary and may be in other embodiments, such as rectangular, triangular, or pyramidal shapes. It is also possible that pins 7 with a gas passage section 26 can also be used to shoot into a membrane. Furthermore, combinations of the marks of the individual pins 7 are conceivable. A variation of the individual pins 7, for example in their shape, size, diameter, type of recesses, size of the groove or diameter of the bore within a pin 7, the outflow velocity of the gas can be adjusted from the gas pressure vessel 1 in the guide channel 2.
  • the outflow velocity of the gas from the gas pressure vessel 1 into the guide channel 2 is determined by the geometrically narrowest point of the gas passage section 26 or the size of the "puncture.” Consequently, the outflow velocity can be adjusted by a variation of the above-mentioned parameters the penetration depth of the pin 7 in the membrane.
  • retraction of the pin 7 can take place by means of a spring 23 (FIG. 6b).
  • the spring 23 is in a preloaded state before the triggering event.
  • the spring 23 is coupled to a movable piston 24.
  • the piston 24, which is coupled to the pin 7, largely perpendicular to the axis of the guide channel 2 is moved and the pin 7 pierces the seal of the gas pressure vessel. 1
  • the movement of the piston 24 is effected by the igniter gas generated in the triggering case.
  • the gas pressure accelerates the piston 24 in the direction of the membrane. In its lowermost passage, the piston 24 pushes the pin 7 coupled thereto into the diaphragm.
  • the spring 23 is tensioned.
  • the clamping force of the spring counteracts the effective direction of the opening mechanism on the piston 24 and causes, after the elimination of the drive, a return of the pin 7.
  • the entire cross section of the "puncture" is thus released.
  • the return of the pin 7 can also be effected by the gas flowing out after the "piercing" of the membrane ( Figure 6a), where the puncture opening becomes opposite surface 25 of the piston 24 with the pin 7 coupled thereto selected such that a large impact surface is provided for the outflowing gas.
  • the gas pressure acting on the surface 25 of the piston 24 by the outflowing gas after the release of the triggering causes the piston 24 and the pin 7 coupled thereto to return, thus releasing the entire cross section of the "puncture.”
  • FIG refer to the embodiments of Figure 1.
  • the order of opening of the gas pressure bottles 1 can be selected in the event of triggering such that a closing of the guide channel 2 by the piston 24 is irrelevant. This is ensured by the fact that the gas pressure bottles are opened first with the farthest distance from the gas outlet opening 21. Thus, a free outflow of the gas from the guide channel 2 is ensured in the gas outlet 21, even if the piston 24 should close the guide channel 2 in a decrease in gas pressure from the gas cylinder 1 again.
  • triggering takes place via a lighter 22.
  • a lighter 22 For further explanations, reference is made to the descriptions below regarding the use of a lighter 22.
  • the opening can take place via the shooting in of a projectile or pin 7.
  • the pin 7 is triggered in the case of release by a pyrotechnic drive largely perpendicular to the axis of the guide channel 2 and pierces the seal of the gas pressure vessel. 1
  • the pin 7 remains in the interior of the gas pressure container 1 and the "puncture opening" is thus completely released
  • the outflow speed can be controlled by varying the diameter of the pins 7.
  • the pin 7 may have a magnetization. The pin 7 remains after triggering the opening mechanism and opening the seal by "piercing" in the gas pressure vessel 1. This can cause rattling noises when the vehicle moves be chosen by a permanent magnetic projectile, which adheres to the ferromagnetic housing wall.
  • the triggering takes place via a lighter 22.
  • a lighter 22 For further explanations, reference is made to the descriptions below with respect to the use of a lighter 22.
  • the pin 7 may be a component of a pyrotechnic thrust piston 4 '. This ensures a simple installation of only one component and the power transmission of the thrust piston 4 'on the pin 7 is almost without loss of power.
  • the pin 7 can be inserted into a bore in the piston 4. An attachment can be done for example by gluing, pressing or threading. For further explanations, reference is made to the embodiments of FIG.
  • housing components as functional elements of the pyrotechnic thrust piston 4 '.
  • Individual pyrotechnic thrust pistons 4 ' are expensive.
  • the thrust piston 4 ' is formed directly inside the housing 3, for example in suitable holes, cavities or the like.
  • the triggering of the opening of the gas pressure vessel 1 takes place via an igniter 22 (FIGS. 3, 4, 6a and 6b) inserted in the housing 3.
  • the implementation of an analog or digital triggering signal provided by the sensor system for triggering one or more gas pressure vessels 1 could, in one embodiment, take place directly on the housing 3 and the lighters 22 patch board 61 done. The placement of the board saves the supply of individual ignition cable 27, which are very expensive. It is also to be assumed that a "dumb" signal is provided by the sensor, which contains only the "trigger" command, without instruction, which pyro piston is to be triggered. Such a selection could be made via the patch board.
  • the triggering takes place via the lighter 22, which receives a signal for triggering by the attached board 61.
  • an igniter gas pressure is provided by igniting the toe cap 220, which acts on the entire surface of the baffle 71.
  • the pin 7 is moved largely perpendicular to the axis of the guide channel 2 and pierces the seal of the gas pressure vessel first
  • the igniter gas pressure causes a breakthrough, the guide channel 2 of the lighter 22 separating wall 28.
  • This wall 28 may for example consist of a rupture disk.
  • the pin 7 has an effective gas attack surface (baffle surface) opposite the igniter 22, which is larger than the diameter of the opening of the bottle neck 11 of the gas pressure container 1. This ensures that the pin 7 penetrates the seal of the gas pressure vessel 1, but does not penetrate into the interior of the gas pressure vessel 1. Consequently, rattling noises are prevented during operation of the vehicle.
  • the pin 7 has a continuous cavity, which allows the gas to flow out of the gas pressure vessel 1 into the guide channel 2.
  • the pin 7 may have an effective gas attack surface (baffle surface) opposite the igniter 22, which is smaller than the diameter of the opening of the bottle neck 11 of the gas pressure vessel 1.
  • pin 7 has a tip or the like. This ensures that the pin 7 in the case of triggering first pierces the seal with its tip and thus weakens. This weakening allows the pin 7 with his wide surface can pierce the seal completely and can be injected into the gas pressure vessel.
  • an opening is created in the gas pressure vessel 1, which has a diameter which corresponds at least to the diameter of the wide area of the pin 7. This allows, due to a large diameter, a rapid outflow of the gas of the gas cylinder 1 in the guide channel second
  • the pin 7 can also have a taper, comparable to FIG. 5K, so that the gas is prevented from flowing past without the pin 7 completely penetrating the membrane and being injected into the gas pressure vessel. Furthermore, a rejuvenation of the pin 7 along the outflow direction of the gas is also conceivable, in order to also ensure a flow past the gas.
  • the membrane is designed such that completely bursting through the "shoot" a suitable pin 7 and thus almost the entire diameter of the bottle neck 1 1 of the gas pressure vessel 1 is available for outflow of the gas into the guide channel 2.
  • the lighters can be equipped with a so-called early ignition charge.
  • the early ignition charge triggers the pyrotechnics even at low temperatures. This leads to a venting of the system before high fire temperatures weaken the structure of the compressed gas cylinders.
  • the filling gas is nitrogen, argon, neon, helium, carbon dioxide or a mixture of said gases.
  • the gas pressure vessels 1 can be connected via a temperature-stable, band-shaped connecting element 8.
  • the gas pressure vessel burst 1. However, they remain one-piece. The crack of the bottle takes place along the housing wall. The explosion pulse can tear the bottle thread from the possibly softened by temperature housing 3. The bottle can become a dangerous "bullet.” If the gas pressure vessels 1 are mechanically connected to one another, the "mass" is reduced by the higher mass. Furthermore, there is the possibility that due to the increased total volume of the bottles, the gas pressure vessel 1 can not escape from a possibly softened housing 3, since individual areas of the so connected gas pressure vessel 1 can be misjudged or still hold individual bottle threads.
  • FIG. 1 In a further embodiment of FIG.
  • a protective layer 30 can be applied to the membrane (not shown separately) which seals the bottleneck 11 of the gas pressure bottle 1, which prevents premature opening or damaging of the membrane due to an unintentional movement of the pin 7.
  • the pin 7 When operating a vehicle, it may happen that the pin 7 is moved unintentionally, the pin 7 could be set in motion, for example by driving on a rough surface or curbs. This could result in the pin 7 being moved towards the diaphragm and damaging the diaphragm, resulting in leakage of the gas from the gas cylinder 1.
  • the protective layer is designed in such a way that it can be pierced by the pin 7 in the case of triggering, but not by such an unplanned movement of the pin 7. Consequently, it is ensured by the protective layer 30 that the membrane pierces the pin 7 only in the case of triggering becomes.
  • the triggering or opening of the gas pressure vessel 1 in the above embodiments can be done by a pre-crash sensor.
  • FIGS. 8 and 9 show an inflatable element 12 arranged on the side of a backrest cheek 18 facing toward the occupant and facing the occupant.
  • This inflatable element 12 serves as an occupant protection system which can be operated as a pre-crash protection system and as an in-crash protection system and via a "multiple Auslösberry "has what a preferred device according to the invention with several gas pressure vessels is used.
  • the inflatable element 12 is connected via an ignition 14 in conjunction with a gas generator 9, wherein the gas in the case of release by triggering the opening mechanism and opening of the gas pressure vessel 1 via the guide channel 2 through the gas outlet 21 (in this Figure not shown) enters the inflatable element 12.
  • the inflatable element 12 may in a first case be inflated in response to a trigger signal of a pre-crash sensor from impending side collision.
  • the inflator 12 is triggered in response to a trigger signal from a contact-based crash sensor that has detected an already started side collision with the sidewall 15 of the vehicle.
  • the inflatable element 12 additionally has a controllable discharge opening 13 for discharging the filling gas in the event of a crash, which is opened in response to a triggering signal of a contact-based side crash sensor via an ignition line 14.
  • a controlled opening in the event of a crash allows outflow of the filling gas and thus causes the targeted absorption of the side acting on the upper body of the occupant pulse, and prevents an increase in the pressure in the inflator 12 to harmful levels.
  • the discharge opening 13 could, for. B. be executed in the form of a closed via seam vent holes, the closure seams are opened on the triggering of a pyrotechnic element.
  • the ignition line 14 is coupled in one embodiment both to a gas generator 9 and to the controllable discharge opening. Alternatively, separate ignition lines 14 may be provided.
  • the inflatable element 12 is inflated in response to the signal of a pre-crash sensor by triggering the gas generator 9 already in the pre-crash phase, and the discharge opening 13 is triggered in the crash phase by the signal of the contact-based sensor , By keeping the discharge opening 13 closed, excessive gas loss of the inflation element 12 is counteracted already in the pre-crash phase, but the required energy absorption in the crash phase is made possible by the controlled opening of the discharge opening 13.
  • the triggering of the gas generator 9 in the pre-crash phase can serve for optimum positioning of the seat and thus of the vehicle occupant, for the possibly following case of an in-crash phase.
  • the vehicle occupant In the pre-crash phase, the vehicle occupant is thus preliminarily placed in an optimal position, so that in the event of an InCrash phase, he can also obtain optimal protection.
  • additional inflation gas can be provided for the protection of the vehicle occupant for the inflatable element 12 by triggering a further one or more further gas pressure cylinders.
  • the gas pressure within the inflatable element 12 may be up to 5 bar, for example, with the inflatable element 12 not emerging from the vehicle seat in the event of an in-car crash.
  • the outflow opening 13 is also triggered in the crash phase by the signal of the contact-based sensor.
  • the arrangement can be re-used for a gas supply in a pre-crash phase due to the presence of further gas pressure bottles, without the need for structural measures.
  • the in-crash triggering case the pre-crash sensor has not identified the impending side collision undoubtedly and therefore does not trigger
  • the activation of the inflatable element 12 and the triggering of the Abströmelements 13 by signals of a contact-based crash sensor takes place approximately at the same time, ie already after the beginning of the collision event ,
  • FIG. 9 shows a horizontal section through the vehicle seat arrangement at the level of a backrest of the vehicle seat of the vehicle seat arrangement.
  • the backrest has a side wall 18 which limits a central part 19 of the backrest.
  • a frame 16 is arranged, which stabilizes the backrest.
  • the frame 16 is at least partially surrounded by a padding 17, which also forms a portion of the vehicle seat, which is to be located on the seat vehicle occupant (not shown).
  • the padding 17 is surrounded by a cover which forms an outer side of the vehicle seat.
  • the padding 17 is z. B. formed by a foam-like material.
  • the inflatable element 12 is arranged.
  • the inflatable element 12 has a wrapping material other than the material of the padding 17, which defines an inflatable chamber, e.g. B.
  • the shell material consists of a textile fabric, such as a conventional airbag material.
  • the inflatable element 12 has no separate wrapping material, but the material of the padding 17 directly limits the inflatable chamber. In this variant, the inflatable element 12 is thus formed as a stretchable cavity in the padding 17.
  • the inflatable element 12 integrated in the padding 17 is provided with means for inflating it in the form of a gas generator 9 (eg a micro gas generator). inflated.
  • the gas generator 9 is integrated in the backrest of the vehicle seat and attached via a holder 91, which may be fixed in particular to the frame 16. For further explanations, reference is made to the description of FIG.
  • FIG. 10 shows a triggering controller including control logic that processes the signals of the pre-crash sensor (A) and the collision-based side crash sensor (B: trigger signal contact sensor) and triggers the protection system described above according to the two scenarios described above (C: trigger signal gas generator and D: trigger signal outflow opening).
  • the protection system can replace a conventional side airbag or be used in addition to a conventional side airbag system.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un dispositif destiné à délivrer un gaz dans un système de protection de personne d'un véhicule, comprenant : au moins deux contenants de gaz sous pression (1) et une conduite directrice communicante (2) reliant les contenants de gaz sous pression, la conduite directrice comprenant une sortie de gaz (21) destinée à évacuer le gaz produit ou libéré à l'ouverture d'au moins un des contenants de gaz sous pression. A chacun des contenants de gaz sous pression est associé respectivement un mécanisme d'ouverture, les mécanismes d'ouverture pouvant être actionnés indépendamment les uns des autres et en conséquence, les contenants de gaz sous pression individuels pouvant être ouverts en association avec des événements séparés dans le temps.
PCT/EP2011/069269 2010-11-04 2011-11-03 Dispositif destiné à délivrer un gaz dans un système de protection de personne d'un véhicule WO2012059522A1 (fr)

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DE102010043432 2010-11-04
DE102010043432.9 2010-11-04
DE102011075272.2 2011-05-04
DE102011075272A DE102011075272A1 (de) 2010-11-04 2011-05-04 Vorrichtung zur Bereitstellung von Gas in einem Personen-Schutzsystem eines Fahrzeugs

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WO2015104258A1 (fr) * 2014-01-09 2015-07-16 Takata AG Ensemble de sac gonflable et procédé de fabrication d'un ensemble de sac gonflable
WO2015182389A1 (fr) * 2014-05-28 2015-12-03 株式会社ダイセル Générateur de gaz

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DE102011080342A1 (de) * 2011-08-03 2013-02-07 Robert Bosch Gmbh Kaltgasgenerator zum Bereitstellen von Kaltgas für eine Aktivierung eines Prallsacks und Verfahren zum Bereitstellen von Kaltgas für eine Prallsackaktivierung
DE102017212035B4 (de) * 2017-07-13 2022-02-17 Joyson Safety Systems Germany Gmbh Schutzvorrichtung für ein Kraftfahrzeug

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US5564740A (en) 1995-03-09 1996-10-15 Trw Inc. Air bag inflator
US5803493A (en) 1997-04-17 1998-09-08 Morton International Inc. Hybrid blowdown inflator with reduced pressure buildup
EP0927116B1 (fr) 1996-09-21 2001-12-05 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Generateur de gaz hybride pour un airbag avec un systeme d'ouverture mecanique pour la chambre d'accumulation
EP1424246A1 (fr) * 2002-11-29 2004-06-02 iSi Airbag GmbH Générateur de gaz froid
US20080042407A1 (en) * 2006-07-31 2008-02-21 Delphi Technologies Inc. Extended output inflator device
US20090045612A1 (en) * 2007-08-15 2009-02-19 Autoliv Asp, Inc. Flameless method to open a cold gas inflator burst disk
DE102010007242A1 (de) * 2010-02-09 2011-08-11 Daimler AG, 70327 Fahrzeugsitzanordnung zum Schützen eines Fahrzeuginsassen eines Fahrzeugs

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US5564740A (en) 1995-03-09 1996-10-15 Trw Inc. Air bag inflator
EP0927116B1 (fr) 1996-09-21 2001-12-05 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Generateur de gaz hybride pour un airbag avec un systeme d'ouverture mecanique pour la chambre d'accumulation
US5803493A (en) 1997-04-17 1998-09-08 Morton International Inc. Hybrid blowdown inflator with reduced pressure buildup
EP1424246A1 (fr) * 2002-11-29 2004-06-02 iSi Airbag GmbH Générateur de gaz froid
US20080042407A1 (en) * 2006-07-31 2008-02-21 Delphi Technologies Inc. Extended output inflator device
US20090045612A1 (en) * 2007-08-15 2009-02-19 Autoliv Asp, Inc. Flameless method to open a cold gas inflator burst disk
DE102010007242A1 (de) * 2010-02-09 2011-08-11 Daimler AG, 70327 Fahrzeugsitzanordnung zum Schützen eines Fahrzeuginsassen eines Fahrzeugs

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Publication number Priority date Publication date Assignee Title
WO2015104258A1 (fr) * 2014-01-09 2015-07-16 Takata AG Ensemble de sac gonflable et procédé de fabrication d'un ensemble de sac gonflable
CN105899409A (zh) * 2014-01-09 2016-08-24 高田股份公司 气囊设备及用于制造气囊设备的方法
US10259419B2 (en) 2014-01-09 2019-04-16 Joyson Safety Systems Germany Gmbh Gas bag arrangement and method for manufacturing a gas bag arrangement
WO2015182389A1 (fr) * 2014-05-28 2015-12-03 株式会社ダイセル Générateur de gaz
JP2015223962A (ja) * 2014-05-28 2015-12-14 株式会社ダイセル ガス発生器

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