CN103909897A - Gas distributor for air bag - Google Patents
Gas distributor for air bag Download PDFInfo
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- CN103909897A CN103909897A CN201310004901.3A CN201310004901A CN103909897A CN 103909897 A CN103909897 A CN 103909897A CN 201310004901 A CN201310004901 A CN 201310004901A CN 103909897 A CN103909897 A CN 103909897A
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- gas distributor
- gas
- described flexible
- outer tube
- inner tube
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Abstract
The invention provides a gas distributor for an air bag. The gas distributor is arranged inside an air pocket of the air bag, and is connected with a gas generator; gas produced by the gas generator is charged into the air pocket through the gas distributor; the gas distributor comprises an inner flexible pipe and an outer flexible pipe; the outer flexible pipe is positioned on the periphery of the inner flexible pipe; an inner air hole is formed in the inner flexible pipe; an outer air hole is formed in the outer flexible pipe; the inner flexible pipe is smaller than the outer flexible pipe to separate the inner air hole from the outer air hole. Since the inner air hole and the outer air hole are a certain distance away from each other, and gas flows through two layers of air holes, thereby increasing the buffering and better resisting the temperature of hot air flow as well as the impact of fine particles.
Description
Technical field
The present invention relates to safe automobile air bag, relate in particular to a kind of gas distributor for air bag.
Background technology
As shown in Figure 1, existing safety air bag generally includes gas generator (not shown), gas distributor 1 ' and airbag (not shown).Gas generator can be detonated moment and produce a large amount of gas; Airbag is connected with gas generator, gas 4 ' enter into after airbag, and airbag expands for the protection of occupant rapidly; Gas distributor 1 ' the be positioned at bottom of airbag; gas distributor 1 ' bottom surface be provided with mounting hole 2 for installing gas producer '; gas 4 ' first enter into from gas generator is gone out gas distributor 1 '; again from gas distributor 1 ' air gate 3 ' flow into airbag; gas 4 ' at gas distributor 1 ' locate to cushion; the opposing temperature of thermal current and the impact of particulate, protection airbag is not damaged.
Existing gas distributor only has one deck structure, and gas enters into airbag from gas distributor fast, the opposing temperature of thermal current and the poor-performing of particle impact.Although the gas distributor also having is double-deck, ectonexine is identical, and in the time of gas impact air distributing box, double-layer structure is close together under impacting, the same problem that has the opposing temperature of thermal current and the poor-performing of particle impact.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of stronger gas distributor of performance of resisting the temperature of thermal current and the impact of particulate is provided.
Particularly, technical scheme of the present invention provides a kind of gas distributor for air bag, described gas distributor is located at the airbag inside of described air bag and is connected with a gas generator, the gas that described gas generator produces is filled with in airbag through described gas distributor, described gas distributor comprises flexible inner tube and flexible outer tube, described flexible outer tube is positioned at the periphery of described flexible inner tube, on described flexible inner tube, offer inner air vent, on described flexible outer tube, offer outer pore, described flexible inner tube is less than described flexible outer tube described inner air vent is separated with described outer pore.
Preferably, the central axis of described flexible inner tube and described flexible outer tube is parallel to each other, and the girth of described flexible inner tube is less than the girth of described flexible outer tube.
Preferably, equal in length along central axis of described flexible inner tube and described flexible outer tube.
Preferably, described flexible inner tube is mutually vertical with the central axis of described flexible outer tube.
Preferably, described flexible inner tube and described flexible outer tube are made up of a slice criss-cross sheet material, and on described criss-cross sheet material, every two blocks of plates that are located along the same line enclose rear described flexible inner tube and the described flexible outer tube of forming respectively.
Preferably, described inner air vent and described outer pore stagger mutually.
Preferably, the number of described inner air vent is greater than the number of described outer pore.
Preferably, described flexible inner tube and described flexible outer tube are made up of coating fabric.
Adopt after technique scheme, there is following beneficial effect: owing to keeping at a certain distance away between inner air vent and outer pore, gas, through two-layer pore, has increased buffering, can better resist the temperature of thermal current and the impact of particulate.
Brief description of the drawings
Fig. 1 is the structural representation of existing gas distributor;
Fig. 2 is the transparent view of gas distributor in the first embodiment of the present invention;
Fig. 3 is the structural representation of air bag in the first embodiment of the present invention;
Fig. 4 is the transparent view of gas distributor in the second embodiment of the present invention;
Fig. 5 is the expansion drawing of gas distributor in the third embodiment of the present invention;
Fig. 6 is the expansion drawing of gas distributor in the 4th kind of embodiment of the present invention.
Reference numeral synopsis:
1 '---gas distributor 2 '---mounting hole 3 '---air gate
4 '---gas
1---flexible inner tube 2---flexible outer tube 4---airbag
5---criss-cross sheet material 6---gas generator 11---inner air vents
12---interior mounting hole 21---outer pore 51---short blocks
52---long piece
Detailed description of the invention
Further illustrate the specific embodiment of the present invention below in conjunction with accompanying drawing, hereinafter identical mark refers to identical element." longitudinally " described in the present invention refers to the direction perpendicular to horizontal surface in figure.
In the first embodiment of the present invention, as Figure 2-3, gas distributor is located at 4 bags of inside of gas of air bag and is connected with gas generator 6, the gas that gas generator 6 produces is filled with in airbag 4 through gas distributor, gas distributor comprises flexible inner tube 1 and flexible outer tube 2, and flexible outer tube 2 is set in outside flexible inner tube 1.In the present embodiment, air bag is front air bag, is arranged on instrument carrier panel, and gas generator 6 adopts dish-shaped gas generator.The equal along continuous straight runs of central axis of flexible outer tube 2 and flexible inner tube 1 is arranged, flexible outer tube 2 is positioned at the periphery of flexible inner tube 1, on the bottom surface of flexible inner tube 1, offer the interior mounting hole 12 for installing gas producer 6, on flexible inner tube 1, also offer inner air vent 11, on flexible outer tube 2, offer outer pore 21, flexible inner tube 1 is less than flexible outer tube 2 inner air vent 11 is separated with outer pore 21.Flexible inner tube 1 is parallel to each other with the central axis of flexible outer tube 2 and equal in length along central axis, the girth of flexible inner tube 1 is less than the girth of flexible outer tube 2, inner air vent 11 has four, outer pore 21 has one, the aperture of inner air vent 11 is less than the aperture of outer pore 21, and inner air vent 11 staggers in the horizontal direction mutually with outer pore 21.
Gas, from gas generator 6 is gone out, first enters in the cavity of flexible inner tube 1 of gas distributor, and in figure, the left and right sides of flexible outer tube 2 and flexible inner tube 1 communicates with airbag 4.The flow direction that in Fig. 2, the direction of arrow indication is gas, portion gas enters into airbag 4 from the left and right sides of flexible inner tube 1; Another part gas enters into four inner air vents 11, then from inner air vent 11, flow in outer pore 21; Also have a small amount of gas to flow into airbag 4 through the left and right sides of flexible outer tube 2 from inner air vent 11.Due to after gas ejects from gas generator 6, first outwards flow out by flexible inner tube 1 left and right sides and inner air vent 11, there is change in air flow line now, prevents from being damaged by the hot gas of High Temperature High Pressure in the relatively narrow and small situation of 4 very first time of airbag internal space; Again because inner air vent 11 and outer pore 21 stagger in the horizontal direction mutually, and longitudinally go up the certain distance in interval, gas flow into air flow line the process of airbag 4 in pore 21 or from the left and right sides of flexible outer tube 2 change has also occurred from inner air vent 11 flow into.In the time that gas enters airbag 4, avoid the damage of hot gas to airbag 4.
In addition, on flexible outer tube 2 and flexible inner tube 1, the effect of guiding is also played in the distribution of pore, can control the direction of air-flow, allows the predetermined part that needs preferential expansion first launch, for example: allow airbag towards being conducive to protect occupant's orientation preferentially to launch.
Have, in gas generator 6, producing in the process of gas, can produce a large amount of particulates, particulate sprays with gas, and speed can produce certain impact, even destroy airbag 4 inwall of airbag 4.Gas distributor plays the effect that stops particulate, and as shown in Figure 3, in the time only having one deck flexible outer tube 2, or two sheets of flexible pipe size is identical and while overlapping, the effect that stops particulate can be played in the inner side of straight line a, and the outside of straight line a cannot stop particulate; In the time having increased flexible inner tube 1, due to equal in length along central axis of flexible inner tube 1 and flexible outer tube 2, flexible inner tube 1 distance certain with flexible outer tube 2 intervals in the vertical, straight line b is with respect to the outward-dipping certain angle of straight line a, stop like this wider of particulate, can stop more particulate.
In addition,, because inner air vent 11 and outer pore 21 stagger in the horizontal direction mutually, also can play the effect that stops particulate.
Preferably, flexible inner tube 1 can be greater than the length of flexible outer tube 2 along Chinese and Western axis along the length on central axis, can stop so more particulate.
Preferably, inner air vent 11 can be positioned on same longitudinal axis with outer pore 21, and the aperture of inner air vent 11 is greater than the aperture of outer pore 21.Like this gas from larger inner air vent 11 enter into less the process of pore 21, the direction of gas also can change, and also can play the effect that opposing high-temperature gas impacts.
Preferably, the number of inner air vent 11 and outer pore 21 and aperture can not limit.In the time that the number of inner air vent 11 is greater than the number of outer pore 21, gas flow guiding is better, and can gas flow guiding can have influence on airbag 4 and in specific time, launch completely.In addition, the outside of flexible outer tube 2 can also increase one deck flexible tube again, produces air flow line more frequently and changes, and further resists high-temperature gas and particle impact.But cross the flexible tube of multilayer, may affect gas flow guiding.Therefore in the design of actual product, should ensure that airbag 4 can be deployed into the position needing in a short period of time, ensure that again airbag 4 can resist the temperature of thermal current and the impact of particulate.
In the second embodiment, as shown in Figure 4, flexible inner tube 1 is mutually vertical with the central axis of flexible outer tube 2, and inner air vent 11 and outer pore 21 still mutually stagger and keep certain fore-and-aft distance.Different, owing to being 90 ° between flexible outer tube 2 and flexible inner tube 1, the left and right sides of flexible inner tube 1 has been stopped a part by flexible outer tube 2, is conducive to change on the one hand the direction of air-flow, can stop on the other hand more particulate.
Preferably, flexible inner tube 1 can also be other angles with the central axis of flexible outer tube 2 on horizontal surface.
In the third embodiment, as shown in Figure 5, flexible inner tube 1 and flexible outer tube 2 are made up of a slice criss-cross sheet material 5, and criss-cross sheet material 5 comprises two short blocks 51 and two block length pieces 52.Two short blocks 51 enclose formation flexible inner tube 1, two block length piece 52 and enclose formation flexible outer tube 2.Short block 51 and long piece 52 are rectangle.
Preferably, as shown in Figure 4, flexible inner tube 1 also can separate independent formation with flexible outer tube 2, then links together.Flexible outer tube 2 is set in outside flexible inner tube 1, the bottom surface laminating of the bottom surface of flexible outer tube 2 and flexible inner tube 1, and the bottom surface of flexible outer tube 2 also offers the outer mounting hole (not shown) for installing gas producer 6, and outer mounting hole overlaps with interior mounting hole 12.
In the 4th kind of embodiment, as shown in Figure 6, different from the third embodiment: short block 51 is trapezoidal.
Preferably, short block and long piece can be also other shapes.
Preferably; each plate on criss-cross sheet material can be random length and shape; as long as every two blocks of plates that are located along the same line enclose rear flexible inner tube 1 and the flexible outer tube 2 of forming respectively on criss-cross sheet material, make flexible inner tube 1 be less than flexible outer tube 2, all belong to protection scope of the present invention.
Preferably, flexible inner tube 1 and flexible outer tube 2 are made up of coating fabric, can select the coating fabric of model 470 dtex coated.
Preferably, flexible inner tube 1 and flexible outer tube 2 can also use other the higher material of flexibility, density.
Preferably, the air bag in the present invention can also be mounted in the side air bag on seat.
Above-described is only principle of the present invention and preferred embodiment.It should be pointed out that for the person of ordinary skill of the art, on the basis of the principle of the invention, can also make some other modification, also should be considered as protection scope of the present invention.
Claims (8)
1. the gas distributor for air bag, described gas distributor is located at the airbag inside of described air bag and is connected with a gas generator, the gas that described gas generator produces is filled with in airbag through described gas distributor, described gas distributor comprises flexible inner tube and flexible outer tube, described flexible outer tube is positioned at the periphery of described flexible inner tube, on described flexible inner tube, offer inner air vent, on described flexible outer tube, offer outer pore, it is characterized in that, described flexible inner tube is less than described flexible outer tube described inner air vent is separated with described outer pore.
2. gas distributor according to claim 1, is characterized in that, the central axis of described flexible inner tube and described flexible outer tube is parallel to each other, and the girth of described flexible inner tube is less than the girth of described flexible outer tube.
3. gas distributor according to claim 2, is characterized in that, described flexible inner tube and described flexible outer tube are equal in length along central axis.
4. gas distributor according to claim 1, is characterized in that, described flexible inner tube is mutually vertical with the central axis of described flexible outer tube.
5. gas distributor according to claim 4, it is characterized in that, described flexible inner tube and described flexible outer tube are made up of a slice criss-cross sheet material, and on described criss-cross sheet material, every two blocks of plates that are located along the same line enclose rear described flexible inner tube and the described flexible outer tube of forming respectively.
6. gas distributor according to claim 1, is characterized in that, described inner air vent and described outer pore stagger mutually.
7. gas distributor according to claim 6, is characterized in that, the number of described inner air vent is greater than the number of described outer pore.
8. according to the gas distributor described in claim 1-7 any one, it is characterized in that, described flexible inner tube and described flexible outer tube are made up of coating fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004901.3A CN103909897B (en) | 2013-01-07 | 2013-01-07 | A kind of gas distributor for air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004901.3A CN103909897B (en) | 2013-01-07 | 2013-01-07 | A kind of gas distributor for air bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909897A true CN103909897A (en) | 2014-07-09 |
| CN103909897B CN103909897B (en) | 2017-11-21 |
Family
ID=51035993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310004901.3A Active CN103909897B (en) | 2013-01-07 | 2013-01-07 | A kind of gas distributor for air bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103909897B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662714A (en) * | 2017-08-16 | 2018-02-06 | 北京航天长征飞行器研究所 | A kind of high-temperature fuel gas flexible diffusion device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040104563A1 (en) * | 2001-04-02 | 2004-06-03 | Anton Fischer | Gas bag module for a vehicle occupant restraint system |
| EP1462321A1 (en) * | 2003-03-24 | 2004-09-29 | Key Safety Systems, Inc. | Side curtain airbag |
| CN101321650A (en) * | 2005-12-01 | 2008-12-10 | 高田-彼得里公开股份有限公司 | Gas flow distributor for an airbag module |
| CN101326082A (en) * | 2005-03-02 | 2008-12-17 | 奥托立夫开发公司 | Tubular gas guide element, gas generation and feed unit and curtain airbag unit |
| CN201325408Y (en) * | 2008-11-30 | 2009-10-14 | 锦州锦恒汽车安全***有限公司 | Air guide tube for the air bag of a curtain type air chamber |
| US20100207368A1 (en) * | 2007-10-30 | 2010-08-19 | Takata-Petri Ag | Airbag midule |
-
2013
- 2013-01-07 CN CN201310004901.3A patent/CN103909897B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040104563A1 (en) * | 2001-04-02 | 2004-06-03 | Anton Fischer | Gas bag module for a vehicle occupant restraint system |
| EP1462321A1 (en) * | 2003-03-24 | 2004-09-29 | Key Safety Systems, Inc. | Side curtain airbag |
| CN101326082A (en) * | 2005-03-02 | 2008-12-17 | 奥托立夫开发公司 | Tubular gas guide element, gas generation and feed unit and curtain airbag unit |
| CN101321650A (en) * | 2005-12-01 | 2008-12-10 | 高田-彼得里公开股份有限公司 | Gas flow distributor for an airbag module |
| US20100207368A1 (en) * | 2007-10-30 | 2010-08-19 | Takata-Petri Ag | Airbag midule |
| CN201325408Y (en) * | 2008-11-30 | 2009-10-14 | 锦州锦恒汽车安全***有限公司 | Air guide tube for the air bag of a curtain type air chamber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662714A (en) * | 2017-08-16 | 2018-02-06 | 北京航天长征飞行器研究所 | A kind of high-temperature fuel gas flexible diffusion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103909897B (en) | 2017-11-21 |
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