CN203902473U - Safe airbag device - Google Patents
Safe airbag device Download PDFInfo
- Publication number
- CN203902473U CN203902473U CN201420336752.0U CN201420336752U CN203902473U CN 203902473 U CN203902473 U CN 203902473U CN 201420336752 U CN201420336752 U CN 201420336752U CN 203902473 U CN203902473 U CN 203902473U
- Authority
- CN
- China
- Prior art keywords
- airbag
- air guide
- gas generator
- opening
- guide bag
- 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
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 210000003127 knee Anatomy 0.000 description 12
- 230000006378 damage Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
Landscapes
- Air Bags (AREA)
Abstract
The utility model relates to the technical field of automobile passive safe devices, in particular to a safe airbag device. The safe airbag device comprises an airbag, wherein an air guide bag is arranged at an opening of the airbag and consists of multiple layers of cloth from inside to outside; the sizes of the cloth of all layers are sequentially increased from inside to outside; the air guide bag is of a pocket shape of which three sides are sewn and one side is opened; two sides of the opening of the air guide bag are respectively sewn with two sides of the opening of the airbag; an air guide opening is formed in the cloth of each layer on the opposite side of the opening of the air guide bag. Compared with the prior art, the safe airbag device disclosed by the utility model has the characteristics that the air guide bag is arranged at the opening of the airbag, and an inside structure of the air guide bag is designed; after hot gas generated by a firework type gas generator is buffered and absorbed by the air guide bag, air current becomes slight, so that the integrity of the airbag and the integral performance of the safe airbag are ensured; the firework type gas generator is adopted to replace a cold air type gas generator, so that the cost is reduced, the weight is reduced, and the size is reduced.
Description
Technical field
The utility model relates to vehicle passive safety device technique field, specifically a kind of air bag device.
Background technology
Automobile passive safety system and product are through the development of decades, and technology is comparative maturity.The widespread use of automobile passive safety system on automobile, has saved numerous vehicle drivers and occupant's life.But under some operating mode, vehicle passive safety product, when having avoided fatal accident, also exists injury risk to occupant's body part region, typical case is the extruding injury risk of safety strap to occupant's chest and belly.
The invention of knee airbag and application, can cushion direct the contact and impact between occupant's shank and knee and instrument carrier panel, the distribution that can improve the suffered safety strap limiting force of occupant's chest belly, reduces the peak value of safety strap to the pressure of human body and thoracic cavity amount of compression simultaneously, reduces injury risk.
Similar with common driver airbag and copilot's safety air bag, knee airbag is generally also comprised of parts such as gas generator, airbag, shell, cover caps.When collision happens accident, when Central Processing Unit (CPU) ECU judgement impact conditions has reached predefined threshold values, will send firing command to knee airbag, i.e. a spark current.Knee airbag receives after spark current, and its gas generator is that time point is quick-fried, outwards exports a large amount of gas, is full of airbag, forms air cushion.
Knee airbag is generally installed in the interior instrument carrier panel of car, and driver side and copilot's side can be installed simultaneously, also a side can be installed separately.In order to reach desirable protection effect, be convenient to panel assembly layout simultaneously, knee airbag is generally arranged on instrument carrier panel near one side of occupant's shank, position on the lower side.When knee airbag, put when quick-fried, its airbag launches to be full of from bottom to top, between occupant's shank and knee and instrument carrier panel, forms inflatable air cushion, the trend that moves forward of restriction lower limb of passenger, and buffer protection is provided.
At present, the knee airbag on market adopts cold air type gas generator more, and cold air type gas generator exists that cost is high, volume is large, the shortcoming of Heavy Weight.In contrast should, that pyrotechnic producer has advantages of is lightweight, cost is low, but its aerogenesis speed is fast, temperature is high, and airbag integraty is caused to severe challenge.
Therefore, need to design a kind of air bag device, the destruction that it can avoid firework type gas generator to cause airbag, thus can realize low cost and low weight, performance is suitable with the air bag device of employing cold air type gas generator simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of performance is provided and has adopted the air bag device of cold air type gas generator suitable, and the air bag device that cost is low, lightweight, airbag integraty is good, its gas generator can adopt firework type gas generator, but is not limited to employing firework type gas generator.
In order to achieve the above object, the utility model has designed a kind of air bag device, comprise airbag, it is characterized in that: the opening part of airbag is provided with air guide bag, described air guide bag is comprised of some layers of cloth from the inside to the outside, and the size of every layer of cloth increases from the inside to the outside successively, and air guide bag is that three side seams are closed, the pocket shape of openings at one side, the opening both sides of air guide bag are sewed up with the opening both sides of airbag respectively, on every layer of cloth on air guide bag opening opposite, are equipped with gas port.
The opening part of described airbag is fixed with gas generator, between airbag and gas generator, is provided with heat spacer, and described gas generator is firework type gas generator.
Described gas port every layer of design on fabric surface along the circumferencial direction around gas generator staggered or axially staggered along gas generator.
Described airbag is comprised of front main leaf, rear main leaf and drawstring, and front main leaf and rear main leaf are sewed up along edge, and the two ends of drawstring are separately fixed at the inside face of front main leaf and rear main leaf.
The utility model compared with the existing technology, at the opening part of airbag, be provided with air guide bag and designed the inner structure of air guide bag, the hot gas that firework type gas generator produces is after the buffering and absorption of air guide bag, the air-flow mitigation that becomes, has guaranteed the integraty of airbag and the overall performance of safety air bag; Owing to having adopted firework type gas generator to replace cold air type gas generator, reduced cost, alleviated weight, reduced volume.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model knee airbag.
Fig. 2 is the structural representation of the utility model air guide bag.
Fig. 3 is the principle of work schematic diagram of the utility model embodiment mono-.
Fig. 4 is the principle of work schematic diagram of the utility model embodiment bis-.
The specific embodiment
Now by reference to the accompanying drawings the utility model is described further.
Referring to Fig. 1 and Fig. 2, the utility model is a kind of air bag device, comprises airbag.The opening part of airbag 3 is provided with air guide bag 31, air guide bag 31 is comprised of some layers of cloth from the inside to the outside, the size of every layer of cloth increases from the inside to the outside successively, air guide bag 31 is that three side seams are closed, the pocket shape of openings at one side, the opening both sides of air guide bag 31 are sewed up with the opening both sides of airbag 3 respectively, on every layer of cloth on air guide bag 31 opening opposites, are equipped with gas port.
The opening part of airbag 3 is fixed with gas generator 1, and gas generator 1 is firework type gas generator, between airbag 3 and gas generator 1, is provided with heat spacer, and the effect of heat spacer is the hot gas damage airbag 3. that prevents that gas generator 1 from producing
When airbag 3 assembles with gas generator 1, gas generator 1 is stretched in airbag 3 from airbag 3 opening parts, the bolt of the aperture of making in advance on airbag 3 opening both sides being aimed to gas generator 1 is inserted in, thereby airbag 3 and gas generator 1 are fixed together.
Airbag 3 is comprised of front main leaf 32, rear main leaf 34 and drawstring 33, and front main leaf 32 is sewed up along edge with rear main leaf 34, and the two ends of drawstring 33 are separately fixed at the inside face of front main leaf 32 and rear main leaf 34, thereby airbag 3 is isolated into the chamber of several half separation.Drawstring 33 is strip, has some.
Embodiment 1
Referring to Fig. 1, the safety air bag in this example is comprised of gas generator 1, housing 2 and airbag 3.When being full of, airbag 3 can fully fit with instrument carrier panel 4, airbag 3 is comprised of front main leaf 32, rear main leaf 34 and drawstring 33, by the suitable design to the sewing position of the size of front main leaf 32 and rear main leaf 34 and drawstring 33, make the shape of airbag 3 self-assembling formation bending under the tension force of air pressure inside.
Referring to Fig. 2 and Fig. 3, for the impact that makes airbag 3 can bear the high temperature and high pressure gas of gas generator 1 release, keep the integraty of airbag 3, at airbag 3 inside opening places, the position of close gas generator 1 arranges air guide bag 31.In the present embodiment, air guide bag 31 is comprised of three layers of cloth, all designs gas port on every layer of cloth.
During safety air bag work, 1 of gas generator is fought and is outwards discharged a large amount of hot gas 5, after hot gas 5 is gone out from gas generator 1, first touches the ground floor stator blade 311 of air guide bag 31.Hot gas 5, after the reflection and water conservancy diversion of ground floor stator blade 311, flows out and flows to second layer stator blade 313 from gas port 1.Hot gas 5, after the reflection and water conservancy diversion of second layer stator blade 313, flows out and flows to the 3rd layer of stator blade 315 from gas port 2 314.Hot gas 5, after the reflection and water conservancy diversion of the 3rd layer of stator blade 315, flows out and to flow to airbag 3 main cavities indoor from gas port 3 316, makes airbag 3 upwards be full of expansion along the shape of instrument carrier panel 4, forms protection air cushion.
Because gas port 1, gas port 2 314 and gas port 3 316 are along staggered around gas generator 1 circumferencial direction, so just can guarantee that the mobile path of hot gas 5 is crooked, thereby absorb the heat of hot gas 5, relax the impulsive force of 5 pairs of airbag 3 main body chambers of hot gas, guarantee the integraty of airbag 3.
Embodiment 2
Referring to Fig. 4, in the present embodiment, air guide bag 31 is comprised of two layers of cloth, all designs gas port on every layer of cloth.
During safety air bag work, 1 of gas generator is fought and is outwards discharged a large amount of hot gas 5, after hot gas 5 is gone out from gas generator 1, first touches the ground floor stator blade 311 of air guide bag 31.Hot gas 5, after the reflection and water conservancy diversion of ground floor stator blade 311, flows out and flows to second layer stator blade 313 from gas port 1.Hot gas 5, after the reflection and water conservancy diversion of second layer stator blade 313, flows out and to flow to airbag 3 main cavities indoor from gas port 2 314, makes airbag 3 upwards be full of expansion along the shape of instrument carrier panel 4, forms protection air cushion.
Because gas port 1 and gas port 2 314 are axially staggered along gas generator 1, so just can guarantee that the mobile path of hot gas 5 is crooked, can be to the direct and strong impact of airbag 3 main body chambers generation, the integraty of assurance airbag 3.
Above-mentioned two embodiment are knee airbags, and same scheme and structure also can be for side airbag and other safety air bags.
Claims (4)
1. an air bag device, comprise airbag, it is characterized in that: the opening part of airbag (3) is provided with air guide bag (31), described air guide bag (31) is comprised of some layers of cloth from the inside to the outside, the size of every layer of cloth increases from the inside to the outside successively, air guide bag (31) is that three side seams are closed, the pocket shape of openings at one side, and the opening both sides of air guide bag (31) are sewed up with the opening both sides of airbag (3) respectively, on every layer of cloth on air guide bag (31) opening opposite, are equipped with gas port.
2. a kind of air bag device according to claim 1, it is characterized in that: the opening part of described airbag (3) is fixed with gas generator (1), between airbag (3) and gas generator (1), be provided with heat spacer, described gas generator (1) is firework type gas generator.
3. a kind of air bag device according to claim 1, is characterized in that: described gas port every layer of design on fabric surface along the circumferencial direction around gas generator (1) staggered or axially staggered along gas generator (1).
4. a kind of air bag device according to claim 1, it is characterized in that: described airbag (3) is comprised of front main leaf (32), rear main leaf (34) and drawstring (33), front main leaf (32) is sewed up along edge with rear main leaf (34), and the two ends of drawstring (33) are separately fixed at the inside face of front main leaf (32) and rear main leaf (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336752.0U CN203902473U (en) | 2014-06-23 | 2014-06-23 | Safe airbag device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336752.0U CN203902473U (en) | 2014-06-23 | 2014-06-23 | Safe airbag device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203902473U true CN203902473U (en) | 2014-10-29 |
Family
ID=51776760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420336752.0U Expired - Lifetime CN203902473U (en) | 2014-06-23 | 2014-06-23 | Safe airbag device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203902473U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774737A (en) * | 2016-03-30 | 2016-07-20 | 延锋百利得（上海）汽车安全***有限公司 | Knee safety gas bag device |
| CN114007908A (en) * | 2019-06-11 | 2022-02-01 | 奥迪股份公司 | Leg protection apparatus for occupant protection system of vehicle |
-
2014
- 2014-06-23 CN CN201420336752.0U patent/CN203902473U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774737A (en) * | 2016-03-30 | 2016-07-20 | 延锋百利得（上海）汽车安全***有限公司 | Knee safety gas bag device |
| CN105774737B (en) * | 2016-03-30 | 2018-04-27 | 延锋百利得（上海）汽车安全***有限公司 | A kind of knee airbag device |
| CN114007908A (en) * | 2019-06-11 | 2022-02-01 | 奥迪股份公司 | Leg protection apparatus for occupant protection system of vehicle |
| US11845394B2 (en) | 2019-06-11 | 2023-12-19 | Audi Ag | Leg protection device for an occupant protection system of a vehicle |
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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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191223 Address after: 200120 Building 8, No. 88, Shengrong Road, Pudong New Area, Shanghai Co-patentee after: Yanfeng Automobile Intelligent Safety System Co., Ltd. Patentee after: Shanghai Lingang Junsheng automobile safety system Co., Ltd Address before: 201315 No. 426 Pu Pu Road, Cambridge Industrial Zone, Shanghai, Pudong New Area Patentee before: Yanfeng Bailide (Shanghai) Automobile Safety System Co., Ltd. |