CN1161289A - Flow rate controlable gas generator - Google Patents
Flow rate controlable gas generator Download PDFInfo
- Publication number
- CN1161289A CN1161289A CN96105844A CN96105844A CN1161289A CN 1161289 A CN1161289 A CN 1161289A CN 96105844 A CN96105844 A CN 96105844A CN 96105844 A CN96105844 A CN 96105844A CN 1161289 A CN1161289 A CN 1161289A
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- gas generator
- lid
- controollable
- removable
- gas
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Abstract
The present invention relates to a gas generator especially for controlling passive buffer system of air flow. The invention realizes continuous control by positioning a movable and controllable cap by a magnet and a spring, thereby realize a required switch for outflow opening. The buffer system should be controlled irrespectively with the temperature and the expansion velocity and pressure can be adjusted to better state when accidents take place, and even can be changed during the accident procedure.
Description
The present invention relates to gas generator, the gas generator of the passive buffer system of self-propelled vehicle of the band may command of more specifically saying so air flow stream outlet.
Known sort buffer system in having the prior art that generates the airbag that gas expands by gas generator.Mixed gas generater contains a gassiness container, and with this container pressurization.With a burst disk with this seal of vessel preventing the too early escape of gas, gas wherein is that cold air is because it needn't be generated by initial pyrotechnics by igniting.Mixed gas generater comprises that also puts in combustion chamber is lighted the fuel dish when triggering a firing unit.Thereby this pyrotechnics generate gas for heat and can destroy burst disk and make cold air to overflow from container.Cold and hot gas mixes and the uncontrollably outflow of the flow export on burning chamber shell, is used to make the airbag expansion or is used for other purposes.
In addition, a kind of system that comes control gaseous outflow process by actual needs is also disclosed in the prior art.But this system has two independently and respectively gas generators of Filling air bag in this case.These gas generators with different parameters can start the expansion phase of varying strength.They can both be lighted by a public control electrical equipment, and the order of severity of the visual accident of this Ignition Control electrical equipment or passenger's weight are judged and are only lighted little gas generator or only light big gas generator or two gas generators are lighted together, consequently, the low pressure of airbag slowly expands, expands quickly or expand rapidly with high pressure with intermediate pressure.
Above-mentioned design has individual shortcoming, and promptly (first order is for only lighting little gas generator, and bigger gas generator is lighted in the second stage, and the third stage is lighted two aforesaid gas generators) can not be controlled or can only be controlled step by step to the air-flow of flow export.Air-flow is decided by cold air pressure in processing temperature, the container and flow export diameter.These parameters all can not change, thereby thereby just can not obtain a constant effectiveness in vibration suppression in all cases and protect the passenger best.
Thereby basic goal of the present invention is to provide a kind of gas generator of above-mentioned form, and wherein the air-flow of Filling air bag can be adjusted continuously and control temperature independently corresponding to all situations.
Can be achieved by the characteristic of claim 1 by this purpose of the present invention, wherein, adjust air-flow (amount) by the variation of air stream outlet face area.This can be covered by a removable and controollable that covers flow export with the form that requires finishes.
From dependent claims, can draw the useful improvement of the present invention.Wherein removable and controollable lid is made by ferromagnetic material, and it links to each other with a retracing spring also can be by an electromagnet displacement, opens with making the bigger or less degree of flow export.
Specifically, the invention has the advantages that and irrespectively to control airshed on a large scale with external temperature at one.In addition, the order of severity of the height by the different parameter of intelligent electric equipment evaluation such as seat position, passenger and weight and accident can obtain the optimal control of a gas generator.In this case, can guarantee a best setting of protection passenger's air bag system when having an accident.
Below by accompanying drawing embodiments of the invention and useful improvement are described, in the accompanying drawing:
Fig. 1 be one by complete gas generator of the present invention;
Fig. 2 is that a flow export with an opening is schemed by the local thin of gas generator of the present invention;
Fig. 3 is a local thin figure by the gas generator of the flow export of a minification of band of the present invention.
Be denoted by the same reference numerals in the accompanying drawing and have the element of similar or identical function.
Fig. 1 is for pressing gas generator of the present invention.The cold air container 1 of depositing cold air 2 is by 3 sealings of a burst disk.This container 1 links to each other with burning chamber shell 12, and safety guard 3 in front.Discharge orifice 4 also is formed on the burning chamber shell 12, and gas is discharged to outside for using via this mouth.The jet pipe 5 of combustion chamber is on burst disk 3 opposites and seal this combustion chamber 8, and 6 on fuel dish places combustion chamber, produces hot gas after lighting with firing unit 9.10 feedthroughs of firing unit contact reach the outside with combustion chamber 8 sealed combustion chamber lid 11.One movably cylinder-shaped sleeve or another cover plate 15 are located at annular and place the gas on burning chamber shell 12 cylindrical walls to flow out on the opening 4 in the outside.Be provided with an electromagnet 13 around cover plate or sleeve pipe 15 are cylindrical, thereby make and say with regard to magnetic field, its direction setting can cause magnetic force can bring into play whole effects, and electromagnet 13 is by lead 7 controls of a Based Intelligent Control electrical equipment by feedthrough combustion chamber lid 11, the best of decision expansion phase.
The gas generator of a this form is so effect: when by after the lead 10 starting point firearms 9, light fuel dish 6 with regard to emitting enough energy.Thereby gas that generates owing to reaction heat and various particle under high pressure pass combustion chamber jet pipe 5 burst disk 3 of cold air container is destroyed.Cold air is then mixed with hot gas and is discharged to the outside by flowing out opening 4.But the area that also might change flow export 4 makes the also corresponding change of its flow.Under the ferromagnetic sleeve pipe/lid 15 that links to each other with retracing spring auxiliary, can realize this point.Under electromagnet 13 push-and-pull actions, this lid 15 can move to a direction, and next can the moving to other direction of retracing spring 14 effects, can cover gas flow export 4 in varying degrees like this.Magnetic-field intensity can come continuous control by a Based Intelligent Control electrical equipment, controls this electrical equipment of current of electromagnet based on different boundary conditions and defines expansion phase.In this way, the area of flow export and discharge thus can be controlled with the form of a continuous band ferrimagnetism sleeve pipe/lid 15, and the result is, can temperature independent ground Be Controlled and have different expansion characteristics in institute bonded assembly unit.
But the most basic requirement of this control method is: want the remarkable expansion time less than gas generator the switching time of magnetic lid, and can be decided to be 10～25ms the switching time of electromagnetism lid, and this value is quite little.
Understand the maximum area configuration that flows out opening 4 in the detailed description of Fig. 2 more in particular.When drive magnet 13 energisings, ferrimagnetism cylinder-shaped sleeve/lid 15 just moves on to the cylindrical electromagnet 13 from flow export 4 and makes retracing spring 14 be compressed and tensioning.Containing hot and cold airflow of mixed gas just flows out from the whole surface area of flow export 4.If condition remains unchanged in whole expansion phase, then this expansion then is implemented as quickly as possible under top pressure.
Understand the minimum area configuration of flow export 4 in the detailed description of Fig. 3 more in particular.When drive magnet 13 was not switched on, ferrimagnetism cylinder-shaped sleeve/lid 15 covers flow export 4 and retracing spring is in loose attitude.The air-flow that is mixed with hot and cold gas then flows out from the gap between flow export 4 and the sleeve pipe/lid 15, if all keep this condition in whole expansion (inflation) process, then can under low pressure realize a very slow expansion.If with sleeve pipe/lid with flow export to air seal seal, gas expansion then can not take place, gas remains in the gas generator.
Available diverse ways is realized the continuous adjustment to air-flow.Sleeve pipe/lid 15 can be brought into vibration makes airshed control with the frequency of this sleeve pipe/lid 15 switch air stream outlets 4 relevantly.In addition also can be by utilizing the magnetic field force that produces by electromagnet 13 or making sleeve pipe/lid 15 be fixed on the optional position of air stream outlet 4 by the elastic force of retracing spring 14.
Whether sleeve pipe/lid is by electromagnet push-and-pull displacement, and this does not influence operating principle.Restoring force not only may be formed but also can be produced by extension spring by compression spring.Can dream up thus at electromagnet and close other application scenarios that sleeve pipe/gas flow opening was opened fully when lid was in loose attitude, the present invention also can with different gas generator (pyrotechnic gas, miscellaneous gas) use together, this gas generator only requires to have an air stream outlet.
Claims (8)
1. the gas generator that is used for passive buffer system in the gas generator, particularly self-propelled vehicle has the air stream outlet of emergent gas, it is characterized in that: the gross area of described air stream outlet can cover by a removable and controollable and change.
2. by the described gas generator of claim 1, it is characterized in that: removable controollable lid places the front and/or the back of gas flow export.
3. by the described gas generator of claim 1, it is characterized in that: removable and controollable lid contains ferromagnetic material.
4. by the described gas generator of claim 3, it is characterized in that: described ferrimagnetism lid is by pushing away, draw magnetically-actuated.
5. by the described gas generator of claim 1, it is characterized in that: described lid is driven by spring force.
6. by each described gas generator of aforesaid right requirement, it is characterized in that: described ferrimagnetism lid can be by at the magnetic force of a direction be fixed on any fixing dead position at the elastic force of another direction and cover air stream outlet.
7. by each described gas generator in the claim 1 to 6, it is characterized in that: described ferrimagnetism lid is caused vibration at the magnetic force of a direction and the elastic force of another direction, and the time that the frequency of vibration decision air stream outlet is covered, thereby can adjust airshed or expansion phase.
8. by each described gas generator in the claim 1 to 7, it is characterized in that: described air-flow can be in expansion phase covers by removable and controollable and changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96105844A CN1161289A (en) | 1995-05-30 | 1996-05-06 | Flow rate controlable gas generator |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19519678.3 | 1995-05-30 | ||
| CN96105844A CN1161289A (en) | 1995-05-30 | 1996-05-06 | Flow rate controlable gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1161289A true CN1161289A (en) | 1997-10-08 |
Family
ID=5118993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105844A Pending CN1161289A (en) | 1995-05-30 | 1996-05-06 | Flow rate controlable gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1161289A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747987A (en) * | 2011-08-24 | 2014-04-23 | 株式会社大赛璐 | Thrust neutral inflator for an air bag module |
| CN104423279A (en) * | 2013-08-28 | 2015-03-18 | 联想(北京)有限公司 | Electronic device and protection method thereof at mobile state |
| CN104587933A (en) * | 2015-01-29 | 2015-05-06 | 孙丽君 | Securely sealed reaction equipment for petrochemical industry |
| CN105882583A (en) * | 2016-04-20 | 2016-08-24 | 芜湖金鹏汽车部件有限公司 | Safety airbag with speed sensor |
-
1996
- 1996-05-06 CN CN96105844A patent/CN1161289A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747987A (en) * | 2011-08-24 | 2014-04-23 | 株式会社大赛璐 | Thrust neutral inflator for an air bag module |
| CN103747987B (en) * | 2011-08-24 | 2016-11-09 | 株式会社大赛璐 | Thrust neutral gas generator for air bag module |
| CN104423279A (en) * | 2013-08-28 | 2015-03-18 | 联想(北京)有限公司 | Electronic device and protection method thereof at mobile state |
| CN104587933A (en) * | 2015-01-29 | 2015-05-06 | 孙丽君 | Securely sealed reaction equipment for petrochemical industry |
| CN105882583A (en) * | 2016-04-20 | 2016-08-24 | 芜湖金鹏汽车部件有限公司 | Safety airbag with speed sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |