CN112248962A - Safety air bag hybrid gas generator - Google Patents
Safety air bag hybrid gas generator Download PDFInfo
- Publication number
- CN112248962A CN112248962A CN202011373267.7A CN202011373267A CN112248962A CN 112248962 A CN112248962 A CN 112248962A CN 202011373267 A CN202011373267 A CN 202011373267A CN 112248962 A CN112248962 A CN 112248962A
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- China
- Prior art keywords
- gas generator
- shell
- ignition
- wall
- air chamber
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Links
- 239000007789 gas Substances 0.000 claims description 94
- 239000012528 membrane Substances 0.000 claims description 33
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 22
- 239000001307 helium Substances 0.000 claims description 21
- 229910052734 helium Inorganic materials 0.000 claims description 21
- 238000009792 diffusion process Methods 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction 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
- B60R21/264—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 generation of gas, e.g. pyrotechnic
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention discloses a mixed gas generator of an air bag, which comprises a gas generator shell, wherein the top of the gas generator shell is fixedly connected with an ignition unit, the top wall of the inner side wall of the gas generator shell is fixedly connected with an ignition shell positioned at the bottom of the ignition unit, the inner side wall of the ignition shell is in threaded connection with a base, the inner side wall of the ignition shell is fixedly connected with an igniter positioned at the bottom of the base, and the bottom of the gas generator shell is connected with a high-pressure gas chamber shell. There is no risk of burning out the airbag.
Description
Technical Field
The invention relates to the technical field of safety airbag gas generators, in particular to a safety airbag mixed gas generator.
Background
In order to improve safety, a traditional automobile can protect the safety of people in the automobile as far as possible when an accident happens, and an air bag is arranged in the automobile and used for buffering impact force. The traditional pyrotechnic generator adopts a combustion booster to generate a large amount of gas to inflate the safety air bag, the gas generated after combustion has a large amount of heat, the gas is directly flushed out, the gas generator can be damaged or the safety air bag can be burnt out, and the combustion powder is more, so that the safety of a user is not facilitated; and also has the problems of complex structure and larger volume; to this end, an airbag hybrid inflator is proposed.
Disclosure of Invention
The present invention is directed to a hybrid airbag inflator that solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a safety airbag mixed gas generator comprises a gas generator shell, wherein the top of the gas generator shell is fixedly connected with an ignition unit, the inner side wall of the gas generator shell is fixedly connected with an ignition shell which is positioned at the bottom of the ignition unit, the inner side wall of the ignition shell is in threaded connection with a base, the inner side wall of the ignition shell is fixedly connected with an igniter which is positioned at the bottom of the base, the bottom of the gas generator shell is connected with a high-pressure air chamber shell, a high-pressure air chamber is arranged in the inner cavity of the high-pressure air chamber shell, helium is filled in the inner cavity of the high-pressure air chamber, a burst membrane is fixedly connected with the top of the high-pressure air chamber, a first burst membrane holder is installed at one side of the burst membrane, a second burst membrane holder is installed at the other side of the burst membrane, and a diffuser is, the outside of diffuser and the inner chamber intercommunication of ignition shell and high-pressure gas chamber casing, outer wall one side threaded connection of gas generator casing has the third screw, the third screw runs through in the inside of gas generator casing and extends to the inside of diffuser casing, the outer wall opposite side threaded connection of gas generator casing has the fourth screw, the fourth screw runs through in the inside of gas generator casing and extends to the inside of diffuser casing.
As further preferable in the present technical solution: the top of the inner cavity of the high-pressure air chamber is communicated with a nozzle.
As further preferable in the present technical solution: the power output end of the ignition unit is electrically connected with the power input end of the igniter, and the top of the base is fixedly connected with the bottom of the ignition unit.
As further preferable in the present technical solution: the helium is contained in the inner cavity of the high-pressure air chamber, and the inner cavity of the ignition shell is provided with an air chamber.
As further preferable in the present technical solution: the inner cavity of the ignition shell is filled with a medicament, and the bottom of the outer wall of the ignition shell is communicated with an ignition nozzle.
As further preferable in the present technical solution: a first diffusion opening is formed in one side of the outer wall of the gas generator shell, and a second diffusion opening is formed in the other side of the outer wall of the gas generator shell.
As further preferable in the present technical solution: and one side of the outer wall of the gas generator shell is in threaded connection with a first screw, and the first screw penetrates through the inside of the gas generator shell and extends to an inner cavity of the high-pressure gas chamber shell.
As further preferable in the present technical solution: and a second screw is in threaded connection with the other side of the outer wall of the gas generator shell, penetrates through the inside of the gas generator shell and extends to the inner cavity of the high-pressure gas chamber shell.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the top of the high-pressure air chamber is fixedly connected with the burst membrane, and the first burst membrane retainer is arranged on one side of the burst membrane, so that compared with the traditional pyrotechnic generator, the high-pressure gas generator has the advantages of simpler structure and smaller volume, and can uniformly disperse the proper-temperature high-pressure gas to fill the safety air bag after the low-temperature high-pressure gas and the high-temperature high-pressure gas in the high-pressure gas generator are mixed, so that the risk of burning out the safety air bag is avoided.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the internal structure of the gas generator housing of the present invention;
fig. 3 is a schematic view of the ignition unit structure of the present invention.
In the figure: 1. a gas generator housing; 2. an igniter; 3. an ignition unit; 4. a high pressure gas chamber; 5. cracking the film; 6. a nozzle; 7. a diffuser; 8. a first burst membrane holder; 9. a high pressure gas chamber housing; 10. a base; 11. a first diffusion opening; 12. helium gas; 13. a second diffusion opening; 14. an ignition housing; 15. an air chamber; 16. an ignition nozzle; 17. a first screw; 18. a second screw; 19. a second burst membrane holder; 20. a medicament; 21. a third screw; 22. a diffuser housing; 23. and a fourth screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-3, the present invention provides a technical solution: a safety airbag mixed gas generator comprises a gas generator shell 1, an ignition unit 3 is fixedly connected to the top of the gas generator shell 1, an ignition shell 14 is fixedly connected to the top wall of the inner side wall of the gas generator shell 1 and is positioned at the bottom of the ignition unit 3, a base 10 is connected to the inner side wall of the ignition shell 14 in a threaded mode, an igniter 2 is fixedly connected to the inner side wall of the ignition shell 14 and is positioned at the bottom of the base 10, a high-pressure air chamber shell 9 is connected to the bottom of the gas generator shell 1, a high-pressure air chamber 4 is arranged in the inner cavity of the high-pressure air chamber shell 9, helium 12 is filled in the inner cavity of the high-pressure air chamber 4, a burst membrane 5 is fixedly connected to the top of the high-pressure air chamber 4, a first burst membrane holder 8 is installed on one side of the burst membrane 5, a second burst membrane holder 19 is installed on, the outer side of the diffuser 7 is communicated with the ignition shell 14 and the inner cavity of the high-pressure air chamber shell 9, one side of the outer wall of the gas generator shell 1 is in threaded connection with a third screw 21, the third screw 21 penetrates through the inside of the gas generator shell 1 and extends to the inside of the diffuser shell 22, the other side of the outer wall of the gas generator shell 1 is in threaded connection with a fourth screw 23, and the fourth screw 23 penetrates through the inside of the gas generator shell 1 and extends to the inside of the diffuser shell 22; the third screw 21 and the fourth screw 23 are used to connect the gas generator housing 1 and the diffuser housing 22; the gas generator housing 1 includes an elongated cylindrical high-pressure gas chamber 4 and an ignition housing 14 having a medicine 20 and an ignition unit 3; the high-pressure air chamber 4 is sealed by a burst membrane 5; the burst membrane 5 is positioned on the airbag side or diffuser 7 side; in the rest state of the gas generator housing 1, i.e. before its activation, the high-pressure gas chamber 4 is filled with helium gas 12, the ignition unit 3 comprises a base 10 serving as a support for the igniter 2, the gas generator housing 1 comprises a diffuser 7, the diffuser 7 having a first diffusion opening 11 and a second diffusion opening 13, through which the released gas can flow out and into the airbag.
In this embodiment, specifically: the top of the inner cavity of the high-pressure air chamber 4 is communicated with a nozzle 6; the top of the inner cavity of the high-pressure air chamber 4 is sealed by the burst membrane 5, the burst membrane 5 can ignite the medicament 20 through the igniter 2, the temperature of the burst membrane 5 rises, and finally the burst membrane is opened due to the internal pressure of the high-pressure air chamber 4.
In this embodiment, specifically: the power supply output end of the ignition unit 3 is electrically connected with the power supply input end of the igniter 2, and the top of the base 10 is fixedly connected with the bottom of the ignition unit 3; the base 10 is used to support the igniter 2, and the igniter 2 in the ignition unit 3 is ignited by the transmission of an electric signal.
In this embodiment, specifically: helium gas 12 is contained in the inner cavity of the high-pressure air chamber 4, and an air chamber 15 is opened in the inner cavity of the ignition housing 14.
In this embodiment, specifically: a medicament 20 is placed in an inner cavity of the ignition shell 14, and an ignition nozzle 16 is communicated with the bottom of the outer wall of the ignition shell 14; the igniter 2 ignites the chemical 20 and ejects the helium gas 12 through the ignition nozzle 16.
In this embodiment, specifically: a first diffusion opening 11 is formed in one side of the outer wall of the gas generator shell 1, and a second diffusion opening 13 is formed in the other side of the outer wall of the gas generator shell 1; the high-temperature helium 12 in the ignition shell 14 enters the diffuser 7 through the ignition nozzle 16, and after the rupture disk 5 is opened through high temperature, the high-pressure helium 12 in the high-pressure air chamber 4 enters the diffuser 7 through the nozzle 6, and the high-temperature helium 12 sprayed out of the ignition shell 14 is mixed with the high-pressure helium 12 in the high-pressure air chamber 4 and then enters the airbag through the first diffusion opening 11 and the second diffusion opening 13.
In this embodiment, specifically: a first screw 17 is connected to one side of the outer wall of the gas generator housing 1 in a threaded manner, and the first screw 17 penetrates through the inside of the gas generator housing 1 and extends to the inner cavity of the high-pressure gas chamber housing 9.
In this embodiment, specifically: the other side of the outer wall of the gas generator shell 1 is in threaded connection with a second screw 18, and the second screw 18 penetrates through the interior of the gas generator shell 1 and extends to the inner cavity of the high-pressure gas chamber shell 9; the first screw 17 and the second screw 18 are used to connect the gas generator housing 1 and the high-pressure gas chamber housing 9.
When the device is used, the device is used for a traditional automobile to improve the safety and can protect the safety of people in the automobile as much as possible when an accident happens, and the gas generator shell 1 is particularly used for inflating an air bag, particularly an air bag, which is not shown; the gas generator housing 1 includes an elongated cylindrical high-pressure gas chamber 4 and an ignition housing 14 having a medicine 20 and an ignition unit 3; the high-pressure air chamber 4 is sealed by a burst membrane 5; the burst membrane 5 is positioned on the airbag side or diffuser 7 side; in the rest state of the gas generator housing 1, i.e. before its activation, the high-pressure gas chamber 4 is filled with helium gas 12 under high pressure, the ignition unit 3 comprises a base 10 serving as a support for the igniter 2, the gas generator housing 1 comprises a diffuser 7, which diffuser 7 has a first diffusion opening 11 and a second diffusion opening 13 through which the released gas can flow out and into the airbag, the burst membrane 5 is fastened in the housing of the high-pressure gas chamber 4 by means of a first burst membrane holder 8 and a second burst membrane holder 19, the igniter 2 in the ignition unit 3 is ignited by the transmission of an electrical signal, the medicament 20 is ignited and produces a large quantity of high-temperature helium gas 12 which is ejected through the ignition nozzle 16, the burst membrane 5 is subjected to a temperature increase by the high-temperature helium gas 12 ejected from the ignition nozzle 16, and with the increasing temperature, the burst membrane 5 eventually opens due to the internal pressure of the high-pressure gas chamber 4, after the burst membrane 5 is opened, the high-pressure gas helium 12 in the high-pressure gas chamber 4 enters the diffuser 7 through the nozzle 6, and the high-temperature helium 12 sprayed from the ignition nozzle 16 and the helium sprayed from the nozzle 6 are mixed in the diffuser 7 to reduce the temperature of the helium, so that the helium enters the airbag through the first diffusion opening 11 and the second diffusion opening 13.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An airbag hybrid inflator comprising a inflator housing (1), characterized in that: the top fixed connection ignition unit (3) of gas generator casing (1), the inside wall roof of gas generator casing (1) just is located the bottom fixedly connected with ignition shell (14) of ignition unit (3), the inside wall threaded connection of ignition shell (14) has base (10), the inside wall of ignition shell (14) just is located the bottom fixedly connected with point firearm (2) of base (10), the bottom of gas generator casing (1) is connected with high-pressure air chamber casing (9), high-pressure air chamber (4) have been seted up to the inner chamber of high-pressure air chamber casing (9), the inner chamber of high-pressure air chamber (4) is filled with helium (12), the top fixedly connected with rupture membrane (5) of high-pressure air chamber (4), first rupture membrane holder (8) is installed to one side of rupture membrane (5), second rupture membrane holder (19) is installed to the opposite side of rupture membrane (5), diffuser (7) are installed to the lateral wall of gas generator casing (1), the outside of diffuser (7) and the inner chamber intercommunication of ignition shell (14) and high-pressure air chamber casing (9), outer wall one side threaded connection of gas generator casing (1) has third screw (21), third screw (21) run through in the inside of gas generator casing (1) and extend to the inside of diffuser casing (22), the outer wall opposite side threaded connection of gas generator casing (1) has fourth screw (23), fourth screw (23) run through in the inside of gas generator casing (1) and extend to the inside of diffuser casing (22).
2. An airbag hybrid inflator according to claim 1, wherein: the top of the inner cavity of the high-pressure air chamber (4) is communicated with a nozzle (6).
3. An airbag hybrid inflator according to claim 1, wherein: the power output end of the ignition unit (3) is electrically connected with the power input end of the igniter (2), and the top of the base (10) is fixedly connected with the bottom of the ignition unit (3).
4. An airbag hybrid inflator according to claim 1, wherein: the helium (12) is accommodated in the inner cavity of the high-pressure air chamber (4), and an air chamber (15) is formed in the inner cavity of the ignition shell (14).
5. The hybrid inflator for an airbag according to claim 4, wherein the ignition housing (14) has a cavity for holding a medicament (20), and the ignition housing (14) has an ignition nozzle (16) communicating with the bottom of the outer wall thereof.
6. An airbag hybrid inflator according to claim 1, wherein: a first diffusion opening (11) is formed in one side of the outer wall of the gas generator shell (1), and a second diffusion opening (13) is formed in the other side of the outer wall of the gas generator shell (1).
7. An airbag hybrid inflator according to claim 5, wherein: one side of the outer wall of the gas generator shell (1) is in threaded connection with a first screw (17), and the first screw (17) penetrates through the interior of the gas generator shell (1) and extends to the inner cavity of the high-pressure gas chamber shell (9).
8. The hybrid gas generator for an airbag according to claim 7, characterized in that a second screw (18) is screwed to the other side of the outer wall of the gas generator housing (1), and the second screw (18) penetrates the inside of the gas generator housing (1) and extends to the inner cavity of the high-pressure chamber housing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373267.7A CN112248962A (en) | 2020-11-30 | 2020-11-30 | Safety air bag hybrid gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373267.7A CN112248962A (en) | 2020-11-30 | 2020-11-30 | Safety air bag hybrid gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112248962A true CN112248962A (en) | 2021-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011373267.7A Pending CN112248962A (en) | 2020-11-30 | 2020-11-30 | Safety air bag hybrid gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112248962A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356944A (en) * | 1999-06-18 | 2002-07-03 | 大赛璐化学工业株式会社 | Multi-stage expansion type hybrid inflator |
| CN1951734A (en) * | 2005-10-17 | 2007-04-25 | 关键安全体系股份有限公司 | Dual stage hybrid airbag inflator |
| CN203681472U (en) * | 2014-01-14 | 2014-07-02 | 百利得(湖州)汽车安全系统有限公司 | Minitype firework and water mixed type airbag gas generator |
| CN110177718A (en) * | 2017-01-18 | 2019-08-27 | 天合安全气囊系统有限责任公司 | Mixed gas generater, the method for running mixed gas generater, air bag module and Vehicle security system |
| CN211809502U (en) * | 2020-03-24 | 2020-10-30 | 宜致汽车安全系统（常熟）有限公司 | Air bag cold air type gas generator |
-
2020
- 2020-11-30 CN CN202011373267.7A patent/CN112248962A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356944A (en) * | 1999-06-18 | 2002-07-03 | 大赛璐化学工业株式会社 | Multi-stage expansion type hybrid inflator |
| CN1951734A (en) * | 2005-10-17 | 2007-04-25 | 关键安全体系股份有限公司 | Dual stage hybrid airbag inflator |
| CN203681472U (en) * | 2014-01-14 | 2014-07-02 | 百利得(湖州)汽车安全系统有限公司 | Minitype firework and water mixed type airbag gas generator |
| CN110177718A (en) * | 2017-01-18 | 2019-08-27 | 天合安全气囊系统有限责任公司 | Mixed gas generater, the method for running mixed gas generater, air bag module and Vehicle security system |
| CN211809502U (en) * | 2020-03-24 | 2020-10-30 | 宜致汽车安全系统（常熟）有限公司 | Air bag cold air type gas generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Weiyang Inventor after: Jin Yu Inventor after: Lu Kai Inventor after: Zeng Lei Inventor after: Shen Chunrong Inventor before: Li Weiyang Inventor before: Jin Yu Inventor before: Lu Kai Inventor before: Zeng Lei Inventor before: Shen Chunrong |
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| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |
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| RJ01 | Rejection of invention patent application after publication |