CN203681472U - Minitype firework and water mixed type airbag gas generator - Google Patents
Minitype firework and water mixed type airbag gas generator Download PDFInfo
- Publication number
- CN203681472U CN203681472U CN201420022128.3U CN201420022128U CN203681472U CN 203681472 U CN203681472 U CN 203681472U CN 201420022128 U CN201420022128 U CN 201420022128U CN 203681472 U CN203681472 U CN 203681472U
- Authority
- CN
- China
- Prior art keywords
- gas
- exhaust diffuser
- gas generator
- filtering net
- water
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 6
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 239000007787 solid Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 239000003814 drug Substances 0.000 description 6
- 239000003721 gunpowder Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Images
Landscapes
- Air Bags (AREA)
Abstract
The utility model discloses a minitype firework and water mixed type airbag gas generator which comprises an electric ignitron, a gas generating chemical, a lower shell, an upper shell, a vortex generating pipe, a filter screen, an exhaust diffuser and a water box. The lower shell and the upper shell are fixedly matched to form a combustion chamber, the vortex generating pipe is arranged in the combustion chamber, the combustion chamber is filled with the gas generating chemical, the electric ignitron making contact with the gas generating chemical is mounted on the lower shell, gas inlet holes are formed in the upper portion of the vortex generating pipe, the filter screen and the exhaust diffuser are mounted in the vortex generating pipe, the exhaust diffuser is located on the inner side of the filter screen, and the water box is mounted in the filter screen. Compared with an existing generator, the minitype firework and water mixed type airbag gas generator has the advantages of being smaller in size, lighter, lower in gas exhaust temperature and the like. Meanwhile, discharged solid residues are reduced. The purpose of increasing an inflation effect is achieved by adding water in the generator to absorb heat and generate vapor. Therefore, a better inflation effect can be archived through the gas generating chemical of the same weight.
Description
[technical field]
The utility model relates to automobile air-bag system, especially a kind of small-sized pyrotechnics and water hybrid airbag gas generator.
[background technology]
Safety air bag is very important safety device on automobile, in the time that automobile has an accident, can effectively reduce the injury of accident to human body, thus protection driver and motroist's life security.
Safety air bag is mainly made up of parts such as gas generator, combustion chamber, filter/filtering net, starting mix/expansion combustion medicine, gas generant composition in accordance/gas generating agent, igniter/ignition tube, deflation hole, dividing plate, medicine boxs.Gas generator: the parts that produce and discharge gas in automobile air-bag system.Combustion chamber: the cavity volume that loads gas generant composition in accordance (gunpowder) in gas generator.Filter/filtering net: the gas producing is filtered, solid residue is wherein stayed therein, and high-temperature gas is had to certain cooling effect; Conventionally formed by metallic material.Starting mix/expansion combustion medicine: ignition energy is amplified to a kind of gunpowder that gas generant composition in accordance is ignited smoothly.Gas generant composition in accordance/gas generating agent: main gas provides source, reacts by fast speed combustion chemistry, and solid chemical material is converted into gas.Igniter/ignition tube: a kind of firer's components and parts of lighting fast starting mix by electric signal triggering energy.Deflation hole: the gas that producer produces discharges required gas by deflation hole to safety air bag.Dividing plate: gas generant composition in accordance combustion chamber is divided into the part of different separate space, is with or without through hole on it.Medicine box: for filling part gas generant composition in accordance, that there is independent enclosure space.
The air-cushion inflator of driver side generally need to effectively be full of the airbag of 40L～55L at present; according to the demand of air bag protection effect; general inflationtime is 60～90ms; in 60L pressure vessel testing, the general peak value of its pressure curve is 170kPa～210kPa, and gas molar weight is not from 0.9mol～1.3mol etc.
The general size of the gas generator of the safety air bag of driver side is external diameter 70mm left and right at present; size is relatively large; weight compares heavier; and the gas temperature producing is higher; after medicament burning, fine particle residue is difficult to filter, and the high-temperature particle being discharged in airbag can cause and burn airbag, and cost is also relatively high simultaneously; and along with the development in chaufeur space in steering wheel arrangement and car, less, lighter air bag module has needed to be brought to schedule.
[utility model content]
The purpose of this utility model solves the problems of the prior art exactly, propose a kind of small-sized pyrotechnics and water hybrid airbag gas generator, not only can reduce costs, and can reduce the size of gas generator, alleviate the weight of gas generator, reduce the temperature of Exhaust Gas.
For achieving the above object, the utility model proposes a kind of small-sized pyrotechnics and water hybrid airbag gas generator, comprise squib, gas generant composition in accordance, lower casing, upper casing, play scroll, filtering net, exhaust diffuser, water box, described lower casing and upper casing heavy keying fit form combustion chamber, scroll has been installed in combustion chamber, in combustion chamber, be filled with gas generant composition in accordance, the squib contacting with gas generant composition in accordance is installed on lower casing, the top of playing scroll is provided with induction opening, the inside of playing scroll is provided with filtering net and exhaust diffuser, exhaust diffuser is positioned at the inner side of filtering net, water box is installed in filtering net.
As preferably, aluminium foil is posted in the lower end of described exhaust diffuser, and the upper end of exhaust diffuser is provided with exhausr port.
As preferably, between described lower casing and upper casing, after heavy keying fit, be fixedly connected with by laser welding again, exhaust diffuser is fixed on upper casing by laser welding.
As preferably, described filtering net is two dimensional filter, and the inside of filtering net is provided with the mounting structure of water box.
As preferably, in described water box, be equipped with boiling point higher than 93 DEG C, solidfying point the salts solution lower than-43 DEG C.
The beneficial effects of the utility model: the utility model forms by the thermal current that gunpowder is produced the engineering that eddy current mixes with water, therefore, under identical filter effect, filter can do to such an extent that volume is lighter and handier, and can inlay water box in the middle of filter, by medicament burn produce high temperature add solution to be vaporized, improve gas production rate.The integral structure of gas generator has obtained great optimization, has the plurality of advantages such as volume is less, weight is lighter, gas exhaust temperature is lower with respect to present producer.Simultaneously generating gasification after liquid absorption heat, absorbs a large amount of heats and has reduced the temperature of producer, simultaneously because temperature reduces, make cooling the condensing of solid residue of some high temperature, form larger particle, stay producer inside after being easily filtered net filtration, reduced the discharge of solid residue.And producer reaches by increasing water absorption heat generation aqueous vapor the object that increases inflation effect.Make like this gas generant composition in accordance of equivalent weight, can reach higher inflation effect.
Feature of the present utility model and advantage will be elaborated by reference to the accompanying drawings by embodiment.
[brief description of the drawings]
Fig. 1 is the structural representation of a kind of small-sized pyrotechnics of the utility model and water hybrid airbag gas generator;
Fig. 2 is the top plan view of a kind of small-sized pyrotechnics of the utility model and water hybrid airbag gas generator;
Fig. 3 is the structural representation that plays scroll in a kind of small-sized pyrotechnics of the utility model and water hybrid airbag gas generator;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the structural representation of filtering net in a kind of small-sized pyrotechnics of the utility model and water hybrid airbag gas generator;
Fig. 6 is the A-A cutaway view of Fig. 5.
In figure: 1-squib, 2-gas generant composition in accordance, 3-lower casing, 4-upper casing, 5-play scroll, 6-induction opening, 7-filtering net, 8-exhaust diffuser, 9-exhausr port, 10-water box, 11-aluminium foil.
[detailed description of the invention]
Consult Fig. 1, 2, small-sized pyrotechnics and water hybrid airbag gas generator, comprise squib 1, gas generant composition in accordance 2, lower casing 3, upper casing 4, play scroll 5, filtering net 7, exhaust diffuser 8, water box 10, described lower casing 3 forms combustion chamber with upper casing 4 heavy keying fit, scroll 5 has been installed in combustion chamber, in combustion chamber, be filled with gas generant composition in accordance 2, the squib 1 contacting with gas generant composition in accordance 2 is installed on lower casing 3, the top of playing scroll 5 is provided with induction opening 6, the inside of playing scroll 5 is provided with filtering net 7 and exhaust diffuser 8, exhaust diffuser 8 is positioned at the inner side of filtering net 7, water box 10 is installed in filtering net 7.Aluminium foil 11 is posted in the lower end of described exhaust diffuser 8, and the upper end of exhaust diffuser 8 is provided with exhausr port 9.Between described lower casing 3 and upper casing 4, after heavy keying fit, be fixedly connected with by laser welding, exhaust diffuser 8 is fixed on upper casing 4 by laser welding again.
Consult Fig. 3,4,5,6, play the inside of scroll 5 filtering net 7 is installed, described filtering net 7 is two dimensional filter, and the inside of filtering net 7 is provided with the mounting structure of water box 10, filtering net 7 is that irregular orifice plate surrounds special shape, repeatedly passes through to form filter effect by gas.In described water box 10, be equipped with boiling point higher than 93 DEG C, solidfying point the salts solution lower than-43 DEG C, the salts solution (as calcium chloride) of the formation of the metallic ion of use calcium, sodium, potassium, iron etc. and halogen family ion, sulfate ion, nitrate ion etc., change the logistics feature of its molten boiling point, serve as the medium of the aerogenesis that absorbs heat, 93 DEG C of its aqueous system are not seethed with excitement, and-43 DEG C do not freeze.
Concrete action principle: in the utility model, gas forms air-flow and longer exhaust passage, avoids the directly mobile producer of discharging of gas inner the passing through of producer.Gas forms air-flow to be mixed with solution, makes solution endothermic gasification, generates gas and improves gas production rate, and absorb heat to reduce gas temperature by vaporizer.Make it repeat to reach filter effect through filtering net by changing air flow path, make it can be with very small size and quality realize high efficiency filter effect.The present invention uses air whirl and the collocation of two-dimentional filtering net, greatly alleviate the weight of filtering net, and in filtering net interlayer, load water, can make gas further mix with water, water endothermic disintergration is aqueous vapor, increase gas output, reduce the temperature of getting rid of gas, the solid residue of cooled interior high temperature, condenses its cold going, form larger particle and be easily filtered net filtration, stay producer inside.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, any scheme after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (5)
1. a small-sized pyrotechnics and water hybrid airbag gas generator, it is characterized in that: comprise squib (1), gas generant composition in accordance (2), lower casing (3), upper casing (4), play scroll (5), filtering net (7), exhaust diffuser (8), water box (10), described lower casing (3) forms combustion chamber with upper casing (4) heavy keying fit, scroll (5) has been installed in combustion chamber, in combustion chamber, be filled with gas generant composition in accordance (2), the squib (1) contacting with gas generant composition in accordance (2) is installed on lower casing (3), the top of playing scroll (5) is provided with induction opening (6), the inside of playing scroll (5) is provided with filtering net (7) and exhaust diffuser (8), exhaust diffuser (8) is positioned at the inner side of filtering net (7), water box (10) is installed in filtering net (7).
2. the small-sized pyrotechnics of one as claimed in claim 1 and water hybrid airbag gas generator, is characterized in that: aluminium foil (11) is posted in the lower end of described exhaust diffuser (8), the upper end of exhaust diffuser (8) is provided with exhausr port (9).
3. the small-sized pyrotechnics of one as claimed in claim 1 and water hybrid airbag gas generator, it is characterized in that: between described lower casing (3) and upper casing (4), after heavy keying fit, be fixedly connected with by laser welding, exhaust diffuser (8) is fixed on upper casing (4) by laser welding again.
4. the small-sized pyrotechnics of one as claimed in claim 1 and water hybrid airbag gas generator, is characterized in that: described filtering net (7) is two dimensional filter, and the inside of filtering net (7) is provided with the mounting structure of water box (10).
5. the small-sized pyrotechnics of the one as described in any one in claim 1 to 4 and water hybrid airbag gas generator, is characterized in that: in described water box (10), be equipped with boiling point higher than 93 DEG C, solidfying point the salts solution lower than-43 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022128.3U CN203681472U (en) | 2014-01-14 | 2014-01-14 | Minitype firework and water mixed type airbag gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022128.3U CN203681472U (en) | 2014-01-14 | 2014-01-14 | Minitype firework and water mixed type airbag gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203681472U true CN203681472U (en) | 2014-07-02 |
Family
ID=51003414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420022128.3U Expired - Lifetime CN203681472U (en) | 2014-01-14 | 2014-01-14 | Minitype firework and water mixed type airbag gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203681472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155280A (en) * | 2019-06-26 | 2019-08-23 | 北京机械设备研究所 | A kind of mixed cooling system of high temperature gas source water suitable for underwater high-speed navigation device |
| CN112248962A (en) * | 2020-11-30 | 2021-01-22 | 宜致汽车安全系统（常熟）有限公司 | Safety air bag hybrid gas generator |
-
2014
- 2014-01-14 CN CN201420022128.3U patent/CN203681472U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155280A (en) * | 2019-06-26 | 2019-08-23 | 北京机械设备研究所 | A kind of mixed cooling system of high temperature gas source water suitable for underwater high-speed navigation device |
| CN112248962A (en) * | 2020-11-30 | 2021-01-22 | 宜致汽车安全系统（常熟）有限公司 | Safety air bag hybrid gas generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100 Houshan Natural Village, Heping Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Junsheng Automobile Safety System (Huzhou) Co.,Ltd. Address before: 313100 Houshan Natural Village, Heping Town, Changxing County, Huzhou City, Zhejiang Province Patentee before: KEY SAFETY SYSTEMS (HUZHOU) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |