CN204821456U - Car air bag gas generator - Google Patents
Car air bag gas generator Download PDFInfo
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- CN204821456U CN204821456U CN201520453989.1U CN201520453989U CN204821456U CN 204821456 U CN204821456 U CN 204821456U CN 201520453989 U CN201520453989 U CN 201520453989U CN 204821456 U CN204821456 U CN 204821456U
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- combustion chamber
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- gas generator
- connecting element
- bag gas
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Abstract
For overcoming the problem that car air bag gas generator use reliability is low, the combustion chamber seal is poor, the security is low among the prior art, the utility model provides a car air bag gas generator which comprises shell, product gas medicine, ignition tube, mounting and the automatic ignition medicine, the inside inclosed combustion chamber of formation of shell, it all sets up in the combustion chamber of shell to produce gas medicine and ignition tube, the mounting is located in the combustion chamber to be fixed in on the shell inner wall, the chamber is fixed to inside formation of mounting, has the mesh of fixed chamber of a plurality of intercommunications and combustion chamber on the mounting, the automatic ignition medicine set up in the internal fixation chamber of mounting. The utility model provides an in the car air bag gas generator, the automatic ignition medicine is difficult for droing in being fixed in the combustion chamber through the mounting is stable, uses the reliability high, and this car air bag gas generator inner combustion chamber is airtight space, but car air bag gas generator normal output when using to the security is high.
Description
Technical field
The utility model relates to a kind of automobile safety air bag gas generator.
Background technology
Be arranged on the gas-bag system comprised in the various vehicle of automobile, for when vehicle high-speed crash, utilize the air bag of fast aeration (airbag) with prevent rider due to inertial impaction in the vehicle as the hard object of bearing circle, Windshield etc. is damaged.This gas-bag system generally includes and starts and the gas generator of Exhaust Gas because the vehicle collide, and introduces gas with the air bag of inflation.
Gas generant composition in accordance is provided with, for producing a large amount of gas instantaneously in conventional gas generation appts.Meanwhile, at some in particular cases, such as vehicle burning etc., owing to not colliding, safe automobile air bag does not work.But along with vehicle burning, the temperature of safety air bag present position raises, gas generant composition in accordance in gas generator may be detonated and second accident occurs, therefore, a small amount of automatic ignition medicine is set usually in gas generator, to fight at lower temperatures gas generant composition in accordance ignited, avoid producing second accident.
Disclose the set-up mode of multiple automatic ignition medicine in gas generator in prior art, such as, by the viscosity of the deoxidation compound part epoxy resin of automatic ignition medicine, automatic ignition medicine is bonded on the housing of gas generator.But, when being fixed above by above-mentioned bonding mode, under gas generator runs into the situations such as impact shock in production, transport and use procedure, the automatic ignition medicine of bonding easily comes off, automatic ignition medicine is made to depart from the position that readily conducts heat of gas generator, affect automatic ignition medicine useful effect, reliability of service is low.
Also disclose in prior art and automatic ignition medicine is placed in the middle pit of combustion chamber lid, in the middle of pit, is provided with one just to the injection hole of gas generant composition in accordance, after the combustion of automatic ignition snack made with traditional Chinese medicines, light gas generant composition in accordance from injection hole transferring energy.What automatic ignition medicine is fixed on combustion chamber lid centre has in the pit of injection hole, although injection hole is conducive to the transmission of the rear energy of automatic ignition snack made with traditional Chinese medicines combustion, but cause the disappearance of the leakproofness of the combustion chamber be made up of combustion chamber lid and filter inwall in gas generator structure.In gas generator structure, combustion chamber lid fits tightly in filter inwall, forms confined space, high temperature and high pressure gas can only be leached by filter, plays the effect of filtration residue and reduction gas temperature.Under the above constitution, when normal ignition gas generator, from then on high temperature and high pressure gas and residue also can directly overflow in hole, from the gap leakage that filter contacts with producer upper shell, do not filter and cooling through actv., reduce the effect of filter, damage and feel frustrated bag and then hurt the danger of driver and crew.
Utility model content
Technical problem to be solved in the utility model is the problem for automobile safety air bag gas generator reliability of service is low in prior art, combustion chamber leakproofness is poor, safety is low, provides a kind of automobile safety air bag gas generator.
It is as follows that the utility model solves the problems of the technologies described above adopted technical scheme:
A kind of automobile safety air bag gas generator is provided, comprises shell, gas generant composition in accordance, ignition tube, connecting element and automatic ignition medicine; Described enclosure forms airtight combustion chamber; Described gas generant composition in accordance and ignition tube are all arranged in the combustion chamber of shell; Described connecting element is positioned at described combustion chamber, and is fixed on outer casing inner wall; Described connecting element inside forms lock chamber, described connecting element has the mesh of multiple connection lock chamber and combustion chamber; Described automatic ignition medicine is arranged at the internal fixtion chamber of described connecting element.
Further, described connecting element is closed netted cage body.
Further, described connecting element is closed metal cylinder mould, and the shape of described metal cylinder mould and the shape of described automatic ignition medicine adapt.
Further, described automatic ignition medicine fits on described outer casing inner wall.
Further, described shell comprises upper casing and lower casing; Described upper casing and lower casing be combined with each other and form airtight combustion chamber.
Further, time generator body is also equipped with in described combustion chamber; Described time generator body is fixed on outer casing inner wall, and forms airtight secondary combustion chamber in secondary generator body inside; Time gas generant composition in accordance and time ignition tube is provided with in described combustion chamber.
Further, the connecting element that described inside is provided with automatic ignition medicine is positioned at described combustion chamber.
Further, described connecting element is fixed on described generator body inwall.
In the automobile safety air bag gas generator that the utility model provides, connecting element is fixed in airtight combustion chamber, can not have a negative impact, can ensure the leakproofness of combustion chamber to the structure of combustion chamber.Meanwhile, connecting element inside forms the lock chamber being used for fixing automatic ignition medicine, and connecting element has the mesh of multiple connection lock chamber and combustion chamber.Automatic ignition medicine can firmly be fixed in combustion chamber by connecting element, and under special circumstances (such as extraneous presence of fire etc.), the high thermal environment of extraneous generation, automobile safety air bag gas generator external temperature sharply raises, heat is delivered to from automobile safety air bag gas generator shell the automatic ignition medicine be fixed on outer casing inner wall, ignite rapidly automatic ignition medicine, and high-temperature gas and particle can be passed to gas generant composition in accordance from the mesh-portion of fixed part rapidly when sending out by automatic ignition efficacy-enhancing ingredient, to ignite gas generant composition in accordance, automobile safety air bag gas generator is avoided to explode because of abnormal high temperature.
The automobile safety air bag gas generator that the utility model provides also can be double-stage air producer, the connecting element that above-mentioned inside is fixed with automatic ignition medicine is arranged in time producer, when for only employing main generator, the destruction of secondary producer, avoids remaining of the secondary gas generant composition in accordance in dimension producer to bring potential safety hazard to the process of scrapping of double-stage air producer.
Accompanying drawing explanation
Fig. 1 is the inner structure schematic diagram of the automobile safety air bag gas generator that the first preferred implementation of the utility model provides;
Fig. 2 is the inner structure schematic diagram of automobile safety air bag gas generator under automatic ignition state that the first preferred implementation of the utility model provides;
Fig. 3 is the inner structure schematic diagram of automobile safety air bag gas generator under automatic ignition state that the utility model the second preferred implementation provides.
Reference numeral in Figure of description is as follows:
10, upper casing;
20, lower casing;
30, combustion chamber; 31, secondary combustion chamber;
40, gas generant composition in accordance; 41, secondary gas generant composition in accordance;
50, ignition tube; 51, secondary ignition tube;
60, secondary generator body;
70, connecting element.
Detailed description of the invention
The technical matters solved to make the utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, particular case the concrete meaning of above-mentioned term in the utility model can be understood.
Fig. 1 shows the structure of the automobile safety air bag gas generator that the first preferred implementation of the utility model provides.
Concrete, this automobile safety air bag gas generator comprises shell, gas generant composition in accordance 40, ignition tube 50, connecting element 70 and automatic ignition medicine (not shown).
Shell comprises upper casing 10 and lower casing 20.Epirelief in the middle part of upper casing 10, edge turnover forms flange.Similar, recessed in the middle part of lower casing 20, edge turnover forms flange.Upper casing 10 is arranged on lower casing 20, and the flange of upper casing 10 combines with the flange of lower casing 20, forms airtight combustion chamber 30 between upper casing 10 and lower casing 20.
Gas generant composition in accordance 40 is distributed in combustion chamber 30.
Ignition tube 50 is positioned at combustion chamber 30, and is fixed on the inside face of lower casing 20.Ignition tube 50 is under the extreme cases such as collision happens, and igniting causes gas generant composition in accordance 40 and burns, and produces a large amount of gas instantaneously to inflate air bag.
Above-mentioned shell, gas generant composition in accordance 40 and ignition tube 50 are existing, and those skilled in the art according to actual conditions, can select its concrete structure and set-up mode and adjust.
Connecting element 70 is positioned at combustion chamber 30, and is fixed on outer casing inner wall.Connecting element 70 is for fixing automatic ignition medicine.Usually, automatic ignition medicine is arranged at the position that readily conducts heat of shell, better to absorb heat under special circumstances and to have an effect.It may occur to persons skilled in the art that, for different containment structures and material, the even mounting means of automobile safety air bag gas generator, the optimal setting positions of connecting element 70 all may be different.In present embodiment, connecting element 70 is fixed on the inside face of lower casing 20, avoids, in production, transport and use procedure, being shifted because of reasons such as vibrating, fall.
Connecting element 70 is wire net cage structure, and the shape of its structure and automatic ignition medicine adapts.Usually, automatic ignition medicine is roughly in disc-shaped structure, and therefore, above-mentioned fixing piece 70 structure is cross-sectional plane is U-shaped column, and its cambered surface sidewall coordinates with automatic ignition medicine.Connecting element 70 inside is the lock chamber for fixing automatic ignition medicine.Its surface is a large amount of mesh being communicated with lock chamber and combustion chamber 30.The existence of above-mentioned mesh when automatic ignition medicine is ignited, can be passed for high-temperature gas and particle and passes to gas generant composition in accordance 40, gas generant composition in accordance 40 being ignited.Meanwhile, above-mentioned fixing piece 70 does not change the leakproofness of combustion chamber 30, and when normally working on automobile safety air bag gas generator, fuction output is without impact.
Automatic ignition medicine is positioned at the lock chamber of above-mentioned fixing piece 70, and is fixed.Meanwhile, automatic ignition medicine fits in the inside face of lower casing 20, better to absorb heat.
Fig. 2 shows the working process of the automobile safety air bag gas generator in Fig. 1.
When the dangerous situations such as extraneous presence of fire produce high thermal environment, this automobile safety air bag gas generator external temperature sharply raises, and outside heat is delivered to the automatic ignition medicine being close to lower casing 20 from lower casing 20, and the automatic ignition medicine that ignites rapidly; And high-temperature gas and particle can be passed to from the mesh on connecting element 70 surface the gas generant composition in accordance 40 being positioned at combustion chamber 30 rapidly, gas generant composition in accordance 40 of igniting when sending out by automatic ignition efficacy-enhancing ingredient, automobile safety air bag gas generator is avoided to explode because of abnormal high temperature.
Fig. 3 shows the structure of the automobile safety air bag gas generator that the utility model the second preferred implementation provides.
This automobile safety air bag gas generator is double-stage air producer.Concrete, similar with the first preferred implementation shown in Fig. 1 and Fig. 2, this automobile safety air bag gas generator comprises shell, gas generant composition in accordance 40, ignition tube 50, connecting element 70 and automatic ignition medicine (not shown).
Shell comprises upper casing 10 and lower casing 20 equally.Upper casing 10 is arranged on lower casing 20, and between upper casing 10 and lower casing 20, form airtight combustion chamber 30.Gas generant composition in accordance 40 is distributed with in this combustion chamber 30.Meanwhile, this combustion chamber 30 internal fixtion has ignition tube 50, and this ignition tube 50 is positioned at the gas generant composition in accordance 40 of above-mentioned combustion chamber 30 for causing.
Meanwhile, this automobile safety air bag gas generator also comprises time generator body 60, secondary gas generant composition in accordance 41 and secondary ignition tube 51.
Secondary generator body 60 is positioned at above-mentioned combustion chamber 30, and secondary generator body 60 combines with outer casing inner wall, in secondary generator body, form time combustion chamber 31.Secondary combustion chamber 31 is positioned at combustion chamber 30, and secondary combustion chamber 31 is similarly confined space.Above-mentioned time gas generant composition in accordance 41 is distributed in time combustion chamber 31.The concrete material of secondary gas generant composition in accordance 41 is identical with gas generant composition in accordance 40.
Secondary ignition tube 51 is fixed in time combustion chamber 31 equally, for causing time gas generant composition in accordance 41.
In present embodiment, connecting element 70 and automatic ignition medicine identical with automatic ignition medicine with the connecting element 70 in the first preferred implementation shown in Fig. 1 with Fig. 2.In present embodiment, connecting element 70 is fixed in time combustion chamber 31.
In present embodiment, the working process of automobile safety air bag gas generator is as follows:
When automobile collides, when ECU judges that impact severity only needs to start the injury that main gas generator can avoid driver and crew, ECU provides signal, the ignition tube 50 being positioned at combustion chamber 30 receives ignition energy, ignition tube 50 is quick-fried and ignite and be positioned at the gas generant composition in accordance 40 of combustion chamber 30, and gas generant composition in accordance 40 is burnt and produced heat, causes time generator body 60 external temperature sharply to raise, heat is delivered to the automatic ignition medicine in connecting element 70 from secondary generator body 60, ignite automatic ignition medicine.
And the secondary gas generant composition in accordance 41 that automatic ignition medicine can ignite in time combustion chamber 31 within the time (> 150ms) longer than secondary gas generator normalized ignition delay, avoid causing secondary injury to driver and crew, also destroy time gas generator, avoid remaining of dimension gas generator firework medicament to bring potential safety hazard to the process of scrapping of double-stage air producer.
Can expect, the connecting element 70 that above-mentioned inside is fixed with automatic ignition medicine can be set in above-mentioned combustion chamber 30 equally, for playing and similar effect in the first preferred implementation, namely do not colliding in particular cases, such as vehicle burning, by the automatic ignition medicine being positioned at the connecting element 70 of combustion chamber 30, the gas generant composition in accordance 40 of combustion chamber 30 is ignited, the secondary gas generant composition in accordance 41 of then igniting again in time combustion chamber 31, thus double-stage air producer is destroyed.
Similar, those skilled in the art only can arrange the connecting element 70 that inside is fixed with automatic ignition medicine in above-mentioned combustion chamber 30, only the gas generant composition in accordance 40 in combustion chamber 30 are ignited.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. an automobile safety air bag gas generator, is characterized in that, comprises shell, gas generant composition in accordance (40), ignition tube (50), connecting element (70) and automatic ignition medicine;
Described enclosure forms airtight combustion chamber (30); Described gas generant composition in accordance (40) and ignition tube (50) are all arranged in the combustion chamber (30) of shell;
Described connecting element (70) is positioned at described combustion chamber (30), and is fixed on outer casing inner wall; Described connecting element (70) inside forms lock chamber, described connecting element (70) has the mesh of multiple connection lock chamber and combustion chamber (30);
Described automatic ignition medicine is arranged at the internal fixtion chamber of described connecting element (70).
2. automobile safety air bag gas generator according to claim 1, is characterized in that, described connecting element (70) is closed netted cage body.
3. automobile safety air bag gas generator according to claim 1, is characterized in that, described connecting element (70) is closed metal cylinder mould, and the shape of described metal cylinder mould and the shape of described automatic ignition medicine adapt.
4. automobile safety air bag gas generator according to claim 1, is characterized in that, described automatic ignition medicine fits on described outer casing inner wall.
5. according to the automobile safety air bag gas generator in claim 1-4 described in any one, it is characterized in that, described shell comprises upper casing (10) and lower casing (20); Described upper casing (10) and lower casing (20) be combined with each other and form airtight combustion chamber (30).
6. according to the automobile safety air bag gas generator in claim 1-4 described in any one, it is characterized in that, in described combustion chamber (30), be also equipped with time generator body (60); Described time generator body (60) is fixed on outer casing inner wall, and forms airtight secondary combustion chamber (31) in secondary generator body (60) inside;
Time gas generant composition in accordance (41) and time ignition tube (51) is provided with in described combustion chamber (31).
7. automobile safety air bag gas generator according to claim 6, is characterized in that, the connecting element (70) that described inside is provided with automatic ignition medicine is positioned at described combustion chamber (31).
8. automobile safety air bag gas generator according to claim 7, is characterized in that, described connecting element (70) is fixed on described generator body (60) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453989.1U CN204821456U (en) | 2015-06-29 | 2015-06-29 | Car air bag gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453989.1U CN204821456U (en) | 2015-06-29 | 2015-06-29 | Car air bag gas generator |
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| Publication Number | Publication Date |
|---|---|
| CN204821456U true CN204821456U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520453989.1U Active CN204821456U (en) | 2015-06-29 | 2015-06-29 | Car air bag gas generator |
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| CN (1) | CN204821456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055803A (en) * | 2018-10-16 | 2020-04-24 | 元翎精密工业股份有限公司 | Safety air bag gas generating device with flow guide ring |
-
2015
- 2015-06-29 CN CN201520453989.1U patent/CN204821456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055803A (en) * | 2018-10-16 | 2020-04-24 | 元翎精密工业股份有限公司 | Safety air bag gas generating device with flow guide ring |
| CN111055803B (en) * | 2018-10-16 | 2021-06-04 | 元翎精密工业股份有限公司 | Safety air bag gas generating device with flow guide ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180607 Address after: 315800 Binhai Road, Binhai New Area, Fenghua Economic Development Zone, Ningbo, Zhejiang 118 Patentee after: Ningbo Byd Automobile Company Limited Address before: 518118 BYD Road, Pingshan New District, Shenzhen, Guangdong 3009 Patentee before: Biyadi Co., Ltd. |
|
| TR01 | Transfer of patent right |