CN101102922B - Gas dispenser used for safety airbag - Google Patents
Gas dispenser used for safety airbag Download PDFInfo
- Publication number
- CN101102922B CN101102922B CN2006800022343A CN200680002234A CN101102922B CN 101102922 B CN101102922 B CN 101102922B CN 2006800022343 A CN2006800022343 A CN 2006800022343A CN 200680002234 A CN200680002234 A CN 200680002234A CN 101102922 B CN101102922 B CN 101102922B
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- China
- Prior art keywords
- gas
- air bag
- safety air
- gas cylinder
- support member
- Prior art date
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- 239000000203 mixture Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 206
- 239000011888 foil Substances 0.000 claims description 35
- 239000007858 starting material Substances 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000567 combustion gas Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000001273 butane Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- B60R21/272—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 with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- 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
- B60R21/272—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 with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators
- B60R2021/2725—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 with means for increasing the pressure of the gas just before or during liberation, e.g. hybrid inflators using a fluid fuel gas generator
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0181—Airbags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
An inflator for an air-bag comprises a single gas bottle (1) containing the pressurised gas. The pressurised gas is a mixture including at least one oxidisable gas and at least one oxidising gas. The inflator incorporates a mechanism (20) to open the gas bottle to enable gas to flow from the gas bottle to the interior of an air-bag (13). There is an initiating device (30) within the air-bag in the form of a spark generator which generates a spark across electrodes (31) to ignite the mixture of gas from the gas bottle.
Description
Technical field
The present invention relates to a kind of safety air bag that is used for, such as being arranged in the automobile, the gas generator of the safety air bag of protection being provided for the automobile driver when having an accident.
Background technology
Mentioned in the industry providing and comprised that two contain the bottle of gas-pressurized or the air-cushion inflator of pressure container.Each bottle can seal with tinsel.In the content that formerly mentions, tinsel remains on against the support member support of the outside appropriate location of paillon foil by a kind of at first.When safety air bag was to be inflated, support member was removed from tinsel, thus make foils breaks allow gas from gas cylinder overflow and the inside that flows into safety air bag with to airbag inflated.
In gas generator that formerly mention, this kind general type, a gas cylinder can contain the fuel of the form of oxidisable gas, and another bottle can contain oxidizing gas.When gas mixes when gas cylinder is overflowed.Subsequently, when gas was introduced safety air bag, gas can be lighted a fire to finish the inflation of safety air bag.
WO96/10496 discloses this kind of means.Start opener opening two gas cylinders from the actuation signal of crash sensor, by airflow duct with the gas release of storage to safety air bag.Be provided with an igniting device to light the miscellaneous gas in the safety air bag, this ignition device is installed in the gas conduit, and is contiguous with the outlet towards the gas conduit of safety air bag.Have been found that this kind device is heavier relatively and complicated.
EP-A-0,856,440 disclose a kind of different device, and in this device, oxidisable gas and oxidizing gas mix in a single pressure container and are contained in this container.In pressure container, be provided with an actuator, when having an accident, start actuator to light oxidisable gas.When oxidisable gas is burnt, thereby remaining gas improves the pressure of gas in the pressure container in its heated pressure container, and gas-pressurized is imported in the safety air bag with to airbag inflated.In the combustion process of oxidisable gas, pressure container gets sufficiently firm in to bear the pressure in the pressure container.Be understood that if use the pyrotechnics actuator because the variation of pyrotechnic material weight and the particle diameter of using may cause focus to change, the igniting reliability may become bad.
Another problem of prior art is: if the gas generator that has gas-pressurized in gas cylinder when running into very high temperature, for example is equipped with the automobile of gas generator when catching fire, gas cylinder has the danger of blast.Certainly, this is to any people who is trapped in the automobile, or the fire fighter of fire extinguishing is extremely disadvantageous.
Summary of the invention
The present invention seeks to provide a kind of improved gas generator.
According to the present invention, a kind of gas generator that is used for safety air bag is provided, this gas generator comprises: a single gas cylinder that contains the gas-pressurized compound, this gas-pressurized compound comprises at least a oxidisable gas and a kind of oxidizing gas, described gas generator is combined with and is used to open gas cylinder so that gas can flow to safety air bag in-to-in device from gas cylinder, have the starter gear of lighting from the gas of gas cylinder, this starter gear is arranged to work as gas at the inside of safety air bag time point combustion gas body.
In embodiments of the invention, when safety air bag using gases producer was inflated, gas at first flow to the inside of safety air bag from gas cylinder, and when gas was positioned at the inside of safety air bag, starter gear was lighted gas.Therefore, starter gear can be positioned at the position away from gas cylinder, and this makes the danger of the undesirable accident that is caused when presence of fire or caused by static reduce to minimum.In addition, with respect to occurring the mode of time point combustion gas body compound at gas mixture from gas cylinder, by when gas mixture time point combustion gas body compound in safety air bag, the danger that gas mixture is lighted in the gas cylinder is reduced to minimum.
In the preferred embodiment of the invention, starter gear is according to a signal enabling, and when the gas from gas cylinder had flow to the inside of safety air bag, signal generator produced signal.
Thereby be understood that have only when safety air bag when partly inflating from the gas of gas cylinder, just start starter gear.
Preferably, starter gear is a spark igniter.
Advantageously, starter gear is positioned at safety air bag.
In the present invention's one optional embodiment, starter gear is a pyrotechnic device, and this pyrotechnic device is installed in the outside of safety air bag, and a conduit will guide to the inside of safety air bag from the flame of pyrotechnic device.
Described pyrotechnic device can be for being arranged to be exclusively used in the pyrotechnic device that forms the starter gear parts.In this embodiment, this pyrotechnic device can be installed in any position easily, certainly, this pyrotechnic device can be according to the signal enabling of signal generator generation, when the gas from gas cylinder has flow to the inside of safety air bag, safety air bag part inflation once more will be lighted the gas in the safety air bag then.
In an option means, pyrotechnic device forms the parts of the device be provided for opening gas cylinder.Flame is guided to safety air bag in-to-in conduit from pyrotechnic device can be arranged in and make safety air bag get the gas that is filled with at least in part from gas cylinder before can lighting mobile gas from the flame of pyrotechnic device.
Advantageously, gas cylinder is at first by rupturable foil seal, and opening device can be used for making foils breaks.
In one embodiment, opening device is combined with to be installed in state of rupture not supports the support member of the position of described paillon foil, this support member is by the parts holding position of piston element, this piston element directly cooperates with support member in initial position, piston element is connected with an ignition tube with from original position driven plunger element to a releasing position, piston element no longer cooperates with support member in this releasing position, allows support member to move to the position that paillon foil will break and selects from gas cylinder to allow gas.
Preferably, support member is with the parts of the form formation support of supporting arm, and this supporting arm substantially perpendicularly extends from the bottom.
Easily, support member is what can surrender, and is arranged to according to pressure surrender gas, that surpass reservation threshold in the described bottle, thus the permission foils breaks.
Advantageously, support member has a mechanical weakness line (a line of mechanicalweakness), so that when the gaseous tension in the gas cylinder surpasses predetermined threshold values, this mechanical weakness line will rupture and at least a portion of support member will be surrendered, thereby allow foils breaks.
In an optional embodiment, opener is combined with piston, and piston and ignition tube are linked together, with from initial position driven plunger to the second place, piston has axle, and this is positioned at the position contiguous with paillon foil at first, and piston is set to that paillon foil will break when piston moves to the second place.
Easily, the gas mixture in the gas cylinder comprises hydrogen, methane, ethane, propane, butane or its compound as oxidisable gas.
Preferably, the gas mixture in the gas cylinder contains oxygen or the nitrogen dioxide as oxidizing gas.
Advantageously, the gas mixture in the gas cylinder contains air.
Easily, the gas mixture in the gas cylinder comprises a kind of unreactable gas.
Preferably, this unreactable gas is helium, argon gas, nitrogen or its compound.
The present invention also relates to a kind of safety air bag that is provided with the gas generator of the above-mentioned type.
Description of drawings
In order to make the present invention be easier to obtain understand, and make the more feature of the present invention obtain understanding, now by embodiment, describe the present invention with reference to the accompanying drawings, wherein:
Fig. 1 is the scheme drawing of the part of gas generator and safety air bag combination, and it has described the gas generator under first state,
Fig. 2 is and the corresponding view of Fig. 1, and it has described the gas generator under second state,
Fig. 3 is and the corresponding partial view of Fig. 1, and it has described the gas generator under another state,
Fig. 4 is and the corresponding view of Fig. 3, and it has described a kind of selectable form of gas generator, and
Fig. 5 is and the corresponding view of Fig. 4 that it has described the another kind of selectable form of gas generator.
The specific embodiment
At first with reference to the Fig. 1 in the accompanying drawing, gas generator comprises gas cylinder 1 (the part gas cylinder is shown in broken lines), and gas cylinder 1 has sidewall 2 and bottom 3, and bottom 3 is provided with filler opening 4.The open end of gas cylinder 1 is fixed on the shell 5.Shell has the upright planomural 6,7 at two intervals, is limited with chamber 8 between upright planomural 6,7, and chamber 8 is by the end wall sealing, and one of end wall is not shown in the cross section of describing.Hole 9 is formed on the middle part of sidewall 7, by paillon foil 10 sealing.
Shell 5 is connected with the position of flange 12 above gas cylinder 1, and flange 12 forms the parts of the shell that comprises safety air bag 13.Thereby the top of shell 5 extends to the inside of safety air bag 13.The top of shell is provided with four gas outlet holes, and only visible wherein three promptly are formed at first hole 14 in the sidewall 6 among Fig. 1, is formed at second hole 15 in the end wall and is formed at the 3rd hole 16 in another sidewall 7.
A kind of device that is used to open gas cylinder 1 is installed in the chamber 8 between sidewall 6 and 7, and this device comprises an ignition tube device 17.Ignition tube device 17 comprises that one is installed in the cartridge ignition pipe 18 in the tubular supporting piece 19.Tubular supporting piece 19 extends upward above ignition tube, thereby limits the chamber of a circular cross section.The support 20 of one " U " shape is supported on the top of tubular supporting piece 19, and support 20 has (in graphic direction) horizontal bottom 21 and two from bottom vertical planar arms 22,23 that extend, upright.In the embodiment of describing, upright arm 23 is provided with a mechanical weakness line 24, and arm is connected in this position with bottom 21.Support 20 can be by crooked or folding and planar metal bar that have a suitable shape forms, or molded by plastic material.In the bottom 21 middle part be provided with hole 24 ', this hole is arranged in the top (in graphic direction) of cartridge ignition pipe 18.As will be described, the part of piston element 25 is passed hole 24 ' extension.
The arm 23 of support 20 is right after the paillon foil 10 that seals gas cylinder 1 effectively, and arm 23 is supported paillon foil as a support member.Thereby arm 23 stops foils breaks.
Gas cylinder comprises a kind of gas mixture.A kind of gas is oxidizing gas or combustion gas, can be one or more compound of hydrogen, methane, ethane, propane or butane or this type of gas.Miscellaneous gas also comprises the oxidizing gas such as oxygen or nitrogen dioxide.Just can provide oxygen by air being introduced in the bottle with compressed-air actuated form.Preferably, the gas mixture in the bottle also comprises at least a unreactable gas, for example helium, argon gas, nitrogen or its compound.It is the form of partial liquefaction that the pressure of the interior gas of container can make gas.
When safety air bag is to be inflated, with actuation point fire tube 18.The gas that is produced by ignition tube 18 will apply an application force to piston head 26, upwards promote piston 25.Thereby piston 25 moves to a position, and the lower surface with the bottom 21 of support 20 cooperates piston head 26 in this position.In this position, the flange 28,29 of directed outside has been moved upward to the top of support arm 22,23 upper ends.Therefore, support arm 23 is no longer supported in the top.This make arm 23 according to paillon foil 10 effect thereon pressure and around mechanical weakness line 24 inside pivoted, thereby remove the upholder that acts on the paillon foil 10, thereby paillon foil 10 breaks.
Shown in the arrow of Fig. 2, the opening 9 of flowing through and now opening from the gas mixture in the gas cylinder 1, by piston 25, point to outer flange 28,29, pass airflow hole 14,15,16 and flow out, enter the inside of safety air bag then.When gas mixture flowed into safety air bag, safety air bag began to swell.Beginning to inflate the selected moment of back one, when gas mixture during at least in part to airbag inflated, signal generator 32 produces a signal, and this signal transmits to light miscellaneous gas in safety air bag between electrode 31 as spark.Thereby, the oxidisable gas generation oxidation in the gas mixture, this has improved the temperature of gas mixture greatly, thereby enhances the pressure that has added gas in the safety air bag in the inflation.
If the pressure of gas is increased to unacceptable level in the gas cylinder 1, for example when can produce that automobile catches fire as a result the time, mechanical weakness line 24 may rupture, the arm 23 of support 20 will be removed from paillon foil 10 then, thereby can make paillon foil 10 break, allow gas to overflow, thereby get rid of the danger of bottle 1 blast from bottle 1.This has obtained description in Fig. 3.
Selectively, arm 23 can be provided with a middle section that is surrounded by the mechanical weakness line.If paillon foil applies high pressure to arm 23, this middle section will be shifted, and along with the mechanical weakness thread breakage, paillon foil 10 will break then.Be understood that the applied ignition apparatus that combines electrode 31 is positioned at safety air bag in the embodiment that the present invention describes, apart from the far distance of gas cylinder 1.Because spark igniter is positioned at apart from the far distance of gas cylinder, in gas cylinder, exist minimal, such as the danger of the gas premature firing that causes by static.
Fig. 4 has described the embodiment of a modification of the present invention, is provided with the different opening devices that are used to open gas cylinder in this scheme.In the embodiment of Fig. 4, gas cylinder 1 and shell 5 have and the identical design of embodiment among Fig. 1.Flange 12 and spark generation device 30 also with describe before identical.Yet in the embodiment of Fig. 4, the paillon foil 10 of seal bore 9 is self-bearing type paillon foils, therefore than thick slightly referring to figs. 1 through the paillon foil in the described embodiment of Fig. 3.The modification of shell 5 is: shell 5 is provided with a gas cylinder opening device that has an ignition tube device 40, and this ignition tube device 40 is installed on the sidewall 6 of shell in the position directly relative with hole 10.Ignition tube device 40 comprises that one is roughly columned shell 41, and this shell 41 comprises a cartridge ignition pipe 42.Shell 41 is connected with the inside in the chamber 8 of shell 5.Piston 43 is installed in the shell 41, in the positions contiguous at first with cartridge ignition pipe 42, piston 43 has the piston head 44 that is positioned at shell 1, and piston 43 also has and has most advanced and sophisticated 46 axle 45, and axle 45 extends across chamber 8 shell 5 in so that the tip 46 of axle 45 is positioned at the position with paillon foil 10 vicinities.
When having an accident, start cartridge ignition pipe 42, thereby as shown in Figure 4, mobile piston 43 is to the right, so that the tip 46 of axle 45 penetrates and puncture paillon foil 10.When paillon foil 10 has broken, will flow in the interior chamber 8 of shell 5 from the gas in the gas cylinder 1, thereby pass gas outlet hole 14,15,16 and enter the inside of safety air bag 13.When gas has partly filled into safety air bag 13, signal generator 32 will produce a signal, thereby be created in the spark that transmits between the electrode 31, and this spark will be lighted the gas in the gas filed safety air bag of part.Oxidisable gas generation oxidation, thereby the temperature build-up of gas in the safety air bag, this has increased the pressure of gas in the safety air bag greatly.
In embodiment of the present invention of describing, starter gear is a spark igniter, and in fact this starter gear is positioned at safety air bag.Yet, in other embodiments of the present invention, can use dissimilar starter gears.For example, imagination can be used the starter gear of pyrotechnic device or cartridge ignition form of tubes.When starting, this pyrotechnic device or cartridge ignition pipe produce flame.Therefore imagination: the conduit that extends in the safety air bag any from this ignition tube can be set, so that when safety air bag is partly inflated, because gas mixture is to airbag inflated, can passes conduit from the flame of pyrotechnic device, thereby light the gas in the safety air bag.
Can be provided with simultaneously an ignition tube independently, by signal enabling from a signal generator that is equal to mutually with signal generator 32, so that having begun to dispose the back at safety air bag, ignition tube starts the preset time section in reality, as shown in Figure 4, in a specific embodiments of the present invention, pyrotechnic device is as the parts of starter gear, and this starter gear is combined in and is provided for opening in the device of gas cylinder.
Fig. 5 is corresponding basically with Fig. 4, therefore will no longer at length redescribe the embodiment of Fig. 5.Yet, can observe, in Fig. 5, be provided with the conduit 50 that extends to flange 12 from shell 41, shell 41 comprises cartridge ignition pipe 42, thus the connection that conduit 50 forms between cartridge ignition pipe 42 and the safety air bag inside.
When having an accident, start cartridge ignition pipe 42, produce the gas of flame and heat.As shown in Figure 5, gas promote piston to the right so that the tip of axle penetrates and punctures paillon foil 10.When paillon foil 10 has broken, will flow in the chamber 8 in the shell 5 from the gas in the bottle 1, thereby pass gas outlet hole 14,15,16 and enter the inside of safety air bag.When initial folding, safety air bag can seal the end of the conduit that is positioned at flange 12 effectively.Yet, when safety air bag begins to swell, between the inside of cartridge ignition pipe 42 and safety air bag, set up complete connection by conduit 50.Conduit 50 flow through effectively to light the gas mixture in the safety air bag from the flame of the enough long pyrotechnic device 42 of burning really.Oxidisable gas is oxidized, thus the temperature build-up of gas in the safety air bag, and this has increased the pressure of gas in the safety air bag greatly.
In embodiments of the invention, gas mixture is only in the position igniting away from the gas cylinder that contains gas mixture.Only when gas mixture in safety air bag, flow through shell 8 and during also by gas outlet hole 14,15,16, just light gas mixture.The danger of the gas to gas cylinder 1 minimizes thereby the flame of lighting gas " strile-backs ".
Term " comprises (comprises) " when using in the application's specification sheets and claims, when " comprising (comprising) " and its variant, mean to comprise specific feature, step or integer.These terms can not be understood as the existence of getting rid of further feature, step or parts.
Claims (12)
1. gas generator that is used for safety air bag (13), described gas generator comprises: a single gas cylinder (1) that contains the gas-pressurized compound, described gas-pressurized compound comprises at least a oxidisable gas and a kind of oxidizing gas, described gas generator is combined with and is used to open gas cylinder so that gas can flow to safety air bag in-to-in device from gas cylinder, has the starter gear of lighting from the gas of gas cylinder (30), described starter gear is arranged to work as gas at the inside of safety air bag time point combustion gas body, it is characterized in that described starter gear (30) is positioned at safety air bag (13);
Described gas cylinder is at first by rupturable paillon foil (10) sealing, and the described device that is used to open gas cylinder can operate, so that paillon foil (10) breaks;
The described device that is used to open gas cylinder is combined with support member (23), described support member (23) is installed in paillon foil is supported in the not appropriate location of state of rupture, described support member remains on the appropriate location by the parts (29) of piston element (25), described piston element (25) directly cooperates with support member in initial position, piston element and ignition tube (18) are linked together with from original position driven plunger element to a releasing position, piston element no longer cooperates with support member in described releasing position, overflows from gas cylinder to allow gas thereby allow support member to move to the position that paillon foil will break.
2. gas generator according to claim 1 is characterized in that, described starter gear (30) is according to a signal enabling, and when the gas from gas cylinder had flow to the inside of safety air bag, signal generator (32) produced described signal.
3. gas generator according to claim 2 is characterized in that, described starter gear (30) is a spark igniter.
4. gas generator according to claim 1 is characterized in that, described support member (23) is with the parts of the form formation support (20) of supporting arm, and described supporting arm substantially perpendicularly extends with bottom (21) from the bottom (21) of support (20).
5. gas generator according to claim 1 is characterized in that, described support member (23) is what can surrender, and is arranged to according to pressure surrender gas, that surpass reservation threshold in the described bottle, thereby permission paillon foil (10) breaks.
6. gas generator according to claim 5, it is characterized in that, described support member (23) has a mechanical weakness line (24), so that when the gaseous tension in the gas cylinder surpasses predetermined threshold values, described mechanical weakness line will rupture and at least a portion of support member will be surrendered, thereby allow foils breaks.
7. according to claim 1, each described gas generator of 2 or 3, it is characterized in that the gas mixture in the gas cylinder (1) comprises hydrogen, methane, propane, butane or its compound as oxidisable gas.
8. according to claim 1, each described gas generator of 2 or 3, it is characterized in that the gas mixture in the gas cylinder (1) contains oxygen or the nitrogen dioxide as oxidizing gas.
9. according to claim 1, each described gas generator of 2 or 3, it is characterized in that the gas mixture in the gas cylinder (1) contains air.
10. according to claim 1, each described gas generator of 2 or 3, it is characterized in that the gas mixture in the gas cylinder (1) comprises a kind of unreactable gas.
11. gas generator according to claim 10 is characterized in that, described unreactable gas is helium, argon gas, nitrogen or its compound.
12. safety air bag that is provided with according to the described gas generator of arbitrary aforementioned claim.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0500684.6A GB0500684D0 (en) | 2005-01-13 | 2005-01-13 | "Improvements in or relating to an inflator for an air-bag" |
| GB0500684.6 | 2005-01-13 | ||
| GB0502793A GB2422188B (en) | 2005-01-13 | 2005-02-10 | Improvements in or relating to an inflator for an air-bag |
| GB0502793.3 | 2005-02-10 | ||
| PCT/SE2006/000018 WO2006075944A1 (en) | 2005-01-13 | 2006-01-09 | An inflator for an air-bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101102922A CN101102922A (en) | 2008-01-09 |
| CN101102922B true CN101102922B (en) | 2011-09-28 |
Family
ID=34224556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800022343A Expired - Fee Related CN101102922B (en) | 2005-01-13 | 2006-01-09 | Gas dispenser used for safety airbag |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4847474B2 (en) |
| CN (1) | CN101102922B (en) |
| AT (1) | ATE485973T1 (en) |
| DE (1) | DE602006017796D1 (en) |
| GB (2) | GB0500684D0 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8128123B2 (en) * | 2008-01-15 | 2012-03-06 | Autoliv Development Ab | Inflator for an air-bag |
| US10857967B2 (en) * | 2019-02-27 | 2020-12-08 | Autoliv Asp, Inc. | Initiator for an automotive safety device |
| FR2987621B1 (en) * | 2012-03-02 | 2014-08-22 | Autoliv Dev | GAS GENERATOR FOR AIRBAG |
| JP6095463B2 (en) * | 2013-04-22 | 2017-03-15 | 株式会社ダイセル | Gas generator |
| JP2015062545A (en) * | 2013-09-25 | 2015-04-09 | 株式会社ダイセル | Protective clothing for upper half part of body |
| CN104691488B (en) * | 2015-01-20 | 2017-02-22 | 苏州伯特利环保科技有限公司 | Traction type air bag exciter |
| CN110450923B (en) * | 2019-07-02 | 2020-06-16 | 杭州电子科技大学 | Airbag-based water surface rapid rescue device and water surface rescue method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582806A (en) * | 1993-08-26 | 1996-12-10 | Autoliv Development Ab | Gas generator |
| US6186540B1 (en) * | 1996-12-17 | 2001-02-13 | Aga Aktiebolag | Method of filling an empty, flexible container, and a container device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5460406A (en) * | 1993-12-13 | 1995-10-24 | Trw Vehicle Safety Systems Inc. | Inflator assembly |
| US5690357A (en) * | 1996-04-25 | 1997-11-25 | Trw Inc. | Dual stage air bag inflator |
| GB2372310B (en) * | 2001-02-14 | 2004-07-28 | Neville George Ray | Central heating systems |
| GB2373310B (en) * | 2001-03-15 | 2005-02-02 | Autoliv Dev | Improvements in or relating to an inflator |
-
2005
- 2005-01-13 GB GBGB0500684.6A patent/GB0500684D0/en not_active Ceased
- 2005-02-10 GB GB0502793A patent/GB2422188B/en active Active
-
2006
- 2006-01-09 CN CN2006800022343A patent/CN101102922B/en not_active Expired - Fee Related
- 2006-01-09 AT AT06700427T patent/ATE485973T1/en not_active IP Right Cessation
- 2006-01-09 JP JP2007551219A patent/JP4847474B2/en not_active Expired - Fee Related
- 2006-01-09 DE DE602006017796T patent/DE602006017796D1/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582806A (en) * | 1993-08-26 | 1996-12-10 | Autoliv Development Ab | Gas generator |
| US6186540B1 (en) * | 1996-12-17 | 2001-02-13 | Aga Aktiebolag | Method of filling an empty, flexible container, and a container device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0500684D0 (en) | 2005-02-23 |
| ATE485973T1 (en) | 2010-11-15 |
| CN101102922A (en) | 2008-01-09 |
| DE602006017796D1 (en) | 2010-12-09 |
| JP4847474B2 (en) | 2011-12-28 |
| JP2008526615A (en) | 2008-07-24 |
| GB0502793D0 (en) | 2005-03-16 |
| GB2422188B (en) | 2007-07-11 |
| GB2422188A (en) | 2006-07-19 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140109 |