CN209870321U - Supporting and air guiding structure for gas generator - Google Patents
Supporting and air guiding structure for gas generator Download PDFInfo
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- CN209870321U CN209870321U CN201822196763.4U CN201822196763U CN209870321U CN 209870321 U CN209870321 U CN 209870321U CN 201822196763 U CN201822196763 U CN 201822196763U CN 209870321 U CN209870321 U CN 209870321U
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- central support
- gas
- gas generator
- guide structure
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Abstract
The utility model belongs to the technical field of gas generator, concretely relates to support air guide structure for gas generator, including upper cover, central support and lower cover, the fixed setting in upper cover and bottom mounting in lower cover in central support top is fixed with central support screen cloth, and one of them side of central support screen cloth is provided with a plurality of sieve mesh, the inside cavity of central support, and central support side evenly is provided with the three rows inlet port. The gas flows along the direction of direction in-process, avoids directly rushing out, and gas is at the in-process of backward flow, and the pressure in the twinkling of an eye weakens by a wide margin, and air bag's inflation process is quick and stable.
Description
Technical Field
The utility model belongs to the technical field of gas generator, concretely relates to support air guide structure for gas generator.
Background
The safety airbag adopts a gas generator for inflation, and the gas generator can be divided into: the difference of the pyrotechnic gas generator and the gas generator is that the pyrotechnic gas is generated by burning gas producing medicine, the gas is generated by decompressing high-pressure gas prestored in an inner cavity and then rushing into the safety air bag, the mixed inner cavity contains both the high-pressure gas and the gas producing medicine, and the produced gas is mixed with the high-pressure gas and rushes into the safety air bag after the gas producing medicine is ignited and burned.
No matter a large amount of gas or compressed gas generated by combustion in a short time is decompressed, the pressure released instantly is huge, if the pressure rushes into the safety airbag along with the gas, the huge impact force can cause secondary damage to the human body, the pressure needs to be decompressed before the gas rushes into the safety airbag, the decompression is completed by adopting a buffering mode, the flow guide structure is complex, the load of a gas generator is increased, the structure is complex, and the decompression effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems in the prior art, and provides a supporting air guide structure which has simple structure, can lead the gas to form annular flow, has good pressure reduction effect and is used for a gas generator.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a support air guide structure for gas generator, includes upper cover, central support and lower cover, the fixed setting in upper cover and bottom mounting in lower cover in central support top, the outer cover of central support is put and is fixed with central support screen cloth, one of them side of central support screen cloth is provided with a plurality of sieve mesh, the inside cavity of central support, the side of central support evenly is provided with the three rows inlet port.
In the above supporting and air guiding structure for the gas generator, the sieve holes are arranged to be staggered with the air inlet holes.
In the above-mentioned one of the supporting gas guiding structures for a gas generator, the centers of the upper cover and the lower cover are recessed inward.
In the above-mentioned one kind of supporting air guide structure for a gas generator, the upper cover has an air outlet hole in the center.
In the above supporting and gas guiding structure for the gas generator, the top of the central support is communicated with the gas outlet hole.
In the above supporting and air guiding structure for the gas generator, a first balancing hole is arranged on one side of the top of the screen of the central support.
In the above supporting and air guiding structure for the gas generator, an energy assembly cover is sleeved above the central support screen, and a second balance hole opposite to the first balance hole is arranged on one side of the top of the energy assembly cover.
The utility model discloses flow with the air current of gas generator in leading, gaseous along the direction of leading flow in-process, avoid directly rushing out, gaseous at the in-process of backward flow, pressure in the twinkling of an eye weakens by a wide margin, and air bag's inflation process is quick and stable.
Drawings
FIG. 1 is an exploded view of a supporting gas directing structure for a gas generator according to the present invention;
fig. 2 is a schematic cross-sectional view of a gas guiding structure for a gas generator according to the present invention.
In the figure, an upper cover 1, a central support 2, a lower cover 3, a central support screen 4, a sieve pore 5, an air inlet hole 6, an air outlet hole 7, a first balance hole 8, an energy component cover 9 and a second balance hole 10.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, a supporting and air guiding structure for a gas generator comprises an upper cover 1, a central support 2 and a lower cover 3, wherein the top end of the central support 2 is fixedly arranged on the upper cover 1, the bottom end of the central support is fixedly arranged on the lower cover 3, a central support screen 4 is fixedly sleeved outside the central support 2, one side surface of the central support screen 4 is provided with a plurality of screen holes 5, the inside of the central support 2 is hollow, and three rows of air inlet holes 6 are uniformly formed in the side surface of the central support 2.
In the inner cavity of the gas generator consisting of an upper cover 1 and a lower cover 3, a central support 2 is supported between the upper cover 1 and the lower cover 3, the upper end and the lower end of the central support 2 are respectively protruded outwards to form a thicker structure, the side wall structure of the central support 2 is thicker, the upper cover 1, the central support 2 and the lower cover 3 are welded by friction welding, the combined structure is precise and avoids gas leakage, a central support screen 4 is used for separating components such as gas producing medicaments and the like from the central support 2, gas flows in from a screen hole 5 and avoids blocking an air inlet 6, only one side is provided with the screen hole 5 which plays a role of guiding when large-particle solids carried by the gas are screened out, the gas can flow between the central support screen 4 and the central support 2 after entering the inside of the central support screen 4 and flows in to the central support 2 along the air inlet 6, the direction of the air inlet 6 and the direction of a gas channel in the central support 2 are vertical, the pressure reduction effect is obvious when the gas is guided to flow.
It is further preferred that the sieve openings 5 are arranged offset to the inlet openings 6. The central support 2 and the central support screen mesh 4 are fixed, the outer side wall between the two rows of air inlet holes 6 is just opposite to the screen mesh 5, and after air flows into the screen mesh 5, the air can flow between the central support screen mesh 4 and the central support 2, so that a path of linear impact of the air is blocked, and the flushing pressure of the air is reduced.
Preferably, the centers of the upper and lower caps 1 and 3 are depressed inward. The central depressions of the upper and lower covers 1 and 3 allow the annular structures in the upper and lower covers 1 and 3 along which the gas flows, reducing direct impact on the side walls of the gas generator.
Further preferably, the upper cover 1 has an air outlet hole 7 at the center. The gas in the gas generator inflates the airbag through the gas outlet 7.
Further preferably, the top of the central support 2 is communicated with the air outlet 7. The gas in the central support 2 is flushed out along the air outlet 7, and the safety airbag connected above the central support is inflated.
Preferably, the center support screen 4 is provided with a first balancing hole 8 on the top side. Gas flows between the central support screen 4 and the central support 2, and when the gas pressure is unbalanced, the gas flows upwards from the first balance holes 8 to avoid gas backflow.
Further preferably, an energy assembly cover 9 is sleeved above the central support screen 4, and a second balance hole 10 opposite to the first balance hole 8 is arranged on one side of the top of the energy assembly cover 9. An energy assembly cover 9 is arranged above the central support screen 4 and used for compressing components such as gas production drugs and the like to avoid collision damage, the energy assembly cover 9 is sleeved and fixed on the central support 2, and the first balance holes 8 and the second balance holes 10 are aligned, so that air flow above and below the energy assembly cover 9 and air flow above and below the central support screen 4 can smoothly flow, and air pressure balance of each part in the gas generator is kept.
The utility model discloses a 2 structures of central support are with central support screen cloth 4 and the fixed equipment of energy component lid 9 in the gas generator inner chamber, form a plurality of gas flow path, effectively alleviate gaseous pressure in the twinkling of an eye, and the gas of stable quick flow can in time effectually fill airbag, plays the cushioning effect.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a support air guide structure for gas generator which characterized in that, includes upper cover, central support and lower cover, central support top is fixed to be set up in upper cover and bottom mounting and sets up in the lower cover, central support overcoat is put and is fixed with central support screen cloth, one of them side of central support screen cloth is provided with a plurality of sieve mesh, the inside cavity of central support, central support side evenly is provided with three rows of inlet ports.
2. A supporting gas guide structure for a gas generator as claimed in claim 1 wherein the mesh is offset from the inlet holes.
3. A supporting gas guide structure for a gas generator as claimed in claim 1 wherein the upper and lower covers are inwardly recessed centrally.
4. A supporting gas guide structure for a gas generator as claimed in claim 1 wherein the cover has a gas outlet hole in the centre.
5. A supporting gas guide structure for a gas generator as claimed in claim 4 wherein the top of the central support is arranged to communicate with the gas outlet.
6. A supporting gas guide structure for a gas generator as claimed in claim 1 wherein the central support screen is provided with a first balancing hole on one side of the top.
7. A supporting gas guide structure for a gas generator according to claim 1 wherein an energy block cover is nested over the central support screen, the energy block cover having a second balancing hole on a side of the top thereof opposite the first balancing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196763.4U CN209870321U (en) | 2018-12-26 | 2018-12-26 | Supporting and air guiding structure for gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196763.4U CN209870321U (en) | 2018-12-26 | 2018-12-26 | Supporting and air guiding structure for gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209870321U true CN209870321U (en) | 2019-12-31 |
Family
ID=68949691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196763.4U Active CN209870321U (en) | 2018-12-26 | 2018-12-26 | Supporting and air guiding structure for gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209870321U (en) |
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2018
- 2018-12-26 CN CN201822196763.4U patent/CN209870321U/en active Active
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