CN209888811U - Novel safety airbag generator - Google Patents
Novel safety airbag generator Download PDFInfo
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- CN209888811U CN209888811U CN201920740021.5U CN201920740021U CN209888811U CN 209888811 U CN209888811 U CN 209888811U CN 201920740021 U CN201920740021 U CN 201920740021U CN 209888811 U CN209888811 U CN 209888811U
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- filter
- filter screen
- shell
- spiral groove
- ignition
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Abstract
The utility model discloses a novel air bag generator, its structure is succinct, easily assembles, and the environmental protection is more, and the filter effect is good, and the air current guide of filter is more reasonable. The utility model comprises a shell, a filter and an igniter, wherein the shell comprises an upper shell and a lower shell, the side wall of the lower shell is provided with an air vent, the top of the upper shell is provided with a mounting hole, a gas generation chamber filled with non-azide gas generating agent and a sealing cover erected above the gas generation chamber are arranged in the shell, and the middle part in the gas generation chamber is provided with an ignition medicine box filled with ignition medicine; the filter comprises a filter ring, a first fixing cover and a second fixing cover, the filter ring is cylindrical, the first fixing cover and the second fixing cover are respectively arranged at the top and the bottom of the filter ring, and the first fixing cover is fixedly connected with the filter ring; the air guide layer of the filter ring is provided with a first spiral groove, and the outer wall of the filter ring is provided with a second spiral groove.
Description
Technical Field
The utility model relates to an air bag generator specifically is used for inflating of car air bag.
Background
The automobile safety air bag is important for protecting the safety of drivers and passengers, and the quick and complete expansion of the air bag is particularly important when the automobile collides. Airbag inflators are devices that are located inside an airbag. The safety air bag is provided with gas generators with different specifications. When the vehicle collides, the gas generator expands the safety airbag after being inflated, so that the safety of passengers is protected; when a vehicle collides, the gas generator expands the safety air bag after being inflated to protect the safety of passengers, the safety air bag generates sparks to ignite a primer-gunpowder to instantaneously generate a large amount of gas through the wire harness entering the point explosion device, an interlayer in the generator body is broken, the bag belt is punched through a hole in the generator body, and the bag belt is extruded through the bag cover plate by huge pressure to be inflated and molded.
The harmless recycling of the air bag is carried out for a long time, the structure of the air bag generator is very clear, and the following defects of the air bag generator in the prior art are found:
1. the structure is complex, so that the assembly process is complex and the time consumption is large;
2. the environment-friendly property of the medicament has improved space;
3. the filter has a poor filtering effect and a poor air flow guiding capability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed at, disclose a novel air bag generator, its structure is succinct, easily assembles, and environmental protection more, the filter effect is good, and the air current guide of filter is more reasonable.
The utility model provides a technical scheme that its technical problem adopted is: a novel safety airbag generator comprises a shell, a filter and an igniter, wherein the shell comprises an upper shell and a lower shell, the side wall of the lower shell is provided with an air vent, the top of the upper shell is provided with a mounting hole, a gas generation medicine chamber filled with non-azide gas generating agent and a sealing cover erected above the gas generation medicine chamber are arranged in the shell, an ignition medicine box filled with ignition medicine is arranged in the middle part of the gas generation medicine chamber, the igniter is arranged above the ignition medicine box, the top of the igniter extends into the sealing cover and is sleeved with a short circuit sleeve, and the filter is arranged between the shell and the gas generation medicine chamber; gas generating holes and ignition holes are distributed on the outer walls of the gas generating chamber and the ignition medicine box at intervals;
the filter comprises a filter ring, a first fixing cover and a second fixing cover, the filter ring is cylindrical, the first fixing cover and the second fixing cover are respectively arranged at the top and the bottom of the filter ring, the first fixed cover is fixedly connected with the filter ring, the second fixed cover is fixedly connected with the filter ring, the filter ring consists of a first filter screen, a second filter screen, a heat-insulating layer and an air guide layer, the first filter screen is positioned on the outer side wall of the filter ring, the air guide layer is positioned on the inner side of the first filter screen, the air guide layer is fixedly connected with the first filter screen, the heat insulation layer is arranged at the inner side of the air guide layer, the heat-insulating layer is fixedly connected with the air guide layer, the second filter screen is positioned on the inner side of the heat-insulating layer, and the second filter screen is fixedly connected with the heat-insulating layer;
the air guide layer of the filter ring is provided with a first spiral groove, the outer wall of the filter ring is provided with a second spiral groove, the second spiral groove corresponds to the inter-groove convex part of the first spiral groove, and the first spiral groove corresponds to the inter-groove convex part of the second spiral groove.
As a preferred embodiment of the present invention: the second filter screen and the first filter screen are plane diamond-shaped screens, the second filter screen and the first filter screen are integrally formed, a coarse mesh screen body is arranged on the second filter screen, a fine mesh screen body is arranged on the first filter screen, and meshes of the coarse mesh screen body are larger than meshes of the fine mesh screen body; an asbestos textile layer is arranged inside the heat preservation layer, a plurality of meshes are arranged on the asbestos textile layer, and the size of the meshes is between that of the coarse mesh body and that of the fine mesh body.
As a preferred embodiment of the present invention: the valve plate is fixedly connected in a diffuser, the diffuser is fixedly connected on the vent hole, a dynamic deformation area is arranged around a flow port on the valve plate, in the dynamic deformation area, the hole edge of the flow port is outward in the radial direction, and the thickness of the valve plate is gradually reduced or increased.
As a preferred embodiment of the present invention: the valve plate inner side of the dynamic deformation area around the orifice of the circulation port is provided with an inward concave curved surface.
As a preferred embodiment of the present invention: the cross sections of the first spiral groove and the second spiral groove are rectangular, triangular or trapezoidal.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses a novel safety airbag generator, which comprises a shell, a filter and an igniter, wherein the shell comprises an upper shell and a lower shell, the side wall of the lower shell is provided with an air vent, the top of the upper shell is provided with a mounting hole, a gas generation medicine chamber filled with non-azide gas generating agent and a sealing cover erected above the gas generation medicine chamber are arranged in the shell, an ignition medicine box filled with ignition medicine is arranged at the middle part in the gas generation medicine chamber, the igniter is arranged above the ignition medicine box, the top of the igniter extends into the sealing cover and is sleeved with a short circuit sleeve, and the filter is arranged between the shell and the gas generation medicine chamber; gas generating holes and ignition holes are distributed on the outer walls of the gas generating chamber and the ignition medicine box at intervals; through the upper shell, the lower shell filter and the base structures of the gas generating medicine chamber and the sealing cover in the upper shell and the lower shell, the gas flow is convenient and fast to assemble, and the structure is simpler compared with the traditional structure; the non-azide is more environment-friendly, so that the recovery difficulty is greatly reduced; in the ignition and inflation process, the ignition tool ignites the ignition powder in the ignition powder box, the produced high-temperature gas enters the gas production powder chamber through the gas production hole, meanwhile, the non-azide is ignited and generates a large amount of harmless gas after strong reaction, impurities are removed through the filter, and the gas is ejected from the vent hole after being guided by the gas, so that the gas bag can be rapidly inflated;
the filter of the utility model comprises a filter ring, a first fixing cover and a second fixing cover, wherein the filter ring is in a cylindrical shape, the first fixing cover and the second fixing cover are respectively arranged at the top and the bottom of the filter ring, the first fixed cover is fixedly connected with the filter ring, the second fixed cover is fixedly connected with the filter ring, the filter ring consists of a first filter screen, a second filter screen, a heat-insulating layer and an air guide layer, the first filter screen is positioned on the outer side wall of the filter ring, the air guide layer is positioned on the inner side of the first filter screen, the air guide layer is fixedly connected with the first filter screen, the heat insulation layer is arranged at the inner side of the air guide layer, the heat-insulating layer is fixedly connected with the air guide layer, the second filter screen is positioned on the inner side of the heat-insulating layer, and the second filter screen is fixedly connected with the heat-insulating layer; through the top and the fixed lid of bottom installation at the filter ring, can protect the edge of filtering ring top and bottom, it is plane rhombus net to do benefit to the second filter screen and the first filter screen that keep of filtering the annular form, plane rhombus net is for colluding traditional products such as flower net and braided network, because manufacturing process integrated into one piece, can guarantee stability between the mesh, filtration blasting residue that can be better, set up the filter screen of two mesh variation in size simultaneously, it is better to the filter effect of filter residue, and set up the heat preservation in the centre of two-layer filter screen, when being used for the absorbed gas inflation, the heat of production, the cooling effect is obvious.
The utility model discloses a be equipped with first helicla flute on the air guide layer of crossing the ring, be equipped with the second helicla flute on the outer wall of crossing the ring, the second helicla flute corresponds convex part between the groove of first helicla flute, first helicla flute corresponds convex part between the groove of second helicla flute. The spiral groove guides the air flow to deflect, so that the path of the air passing through the filter is not along a straight line any more, the impact of the air flow on the filter can be effectively reduced, the risk that the filter is damaged by impact is reduced, the filter is more durable, and the performance is more stable.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an installation structure of a throttle valve according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a preferred embodiment of a valve plate of the throttle valve of the present invention;
fig. 4 is a schematic structural diagram of a preferred embodiment of the filter of the present invention.
Description of reference numerals:
1-upper housing, 2-lower housing, 3-vent hole, 4-mounting hole, 5-gas generating chamber, 6-sealing cover, 7-ignition cartridge, 8-igniter, 9-short circuit sleeve, 10-filter, 11-gas generating hole, 12-ignition hole, 13-fixing piece, 14-protrusion, 15-first fixing disk, 16-second fixing disk, 17-diffuser, 18-flow port, 19-valve plate, 20-dynamic deformation region, 21-concave curved surface,
101-second filter screen, 102-insulating layer, 103-air guide layer, 104-first filter screen, 105-second spiral groove, 106-first spiral groove.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1 to 4, which show a specific embodiment of the present invention; as shown in the figures, the utility model discloses a novel safety airbag generator, including shell, filter 10 and ignition tool 8, the shell contains upper casing 1 and lower casing 2, the lower casing lateral wall is opened has air vent 3, the top of upper casing is provided with mounting hole 4, set up the gas production medicine room 5 that is equipped with non-azide gas propellant and erect sealed lid 6 above it in the shell, the indoor middle part of gas production medicine sets up the ignition medicine box 7 that is equipped with ignition medicine, the upper side is equipped with ignition tool 8 in the ignition medicine box, the top of ignition tool stretches into sealed lid and overlaps and has short circuit cover 9, be equipped with filter 10 between shell and the gas production medicine room; gas generating holes 11 and ignition holes 12 are distributed on the outer walls of the gas generating chamber and the ignition medicine box at intervals;
the filter comprises a filter ring, a first fixing cover and a second fixing cover, the filter ring is cylindrical, the first fixing cover and the second fixing cover are respectively arranged at the top and the bottom of the filter ring, the first fixed cover is fixedly connected with the filter ring, the second fixed cover is fixedly connected with the filter ring, the filter ring consists of a first filter screen 104, a second filter screen 101, an insulating layer 102 and an air guide layer 103, the first filter screen is positioned on the outer side wall of the filter ring, the air guide layer is positioned on the inner side of the first filter screen, the air guide layer is fixedly connected with the first filter screen, the heat insulation layer is arranged at the inner side of the air guide layer, the heat-insulating layer is fixedly connected with the air guide layer, the second filter screen is positioned on the inner side of the heat-insulating layer, and the second filter screen is fixedly connected with the heat-insulating layer;
the air guide layer of the filter ring is provided with a first spiral groove 106, the outer wall of the filter ring is provided with a second spiral groove 105, the second spiral groove corresponds to the inter-groove convex part of the first spiral groove, and the first spiral groove corresponds to the inter-groove convex part of the second spiral groove. The air guide layer and the outer wall are simultaneously provided with the corresponding spiral grooves, so that the wall thickness of each part of the filter is uniform as much as possible, the material of the filter can be fully applied, and the conditions that partial areas are not easy to be damaged by impact and partial areas are easy to be damaged by impact are avoided.
Preferably, as shown in fig. 1 and 4: the second filter screen and the first filter screen are plane diamond-shaped screens, the second filter screen and the first filter screen are integrally formed, a coarse mesh screen body is arranged on the second filter screen, a fine mesh screen body is arranged on the first filter screen, and meshes of the coarse mesh screen body are larger than meshes of the fine mesh screen body; an asbestos textile layer is arranged inside the heat preservation layer, a plurality of meshes are arranged on the asbestos textile layer, and the size of the meshes is between that of the coarse mesh body and that of the fine mesh body. Plane rhombus net is for colluding traditional products such as flower net and braided network, because manufacturing process integrated into one piece, can guarantee stability between the mesh, filtration blasting residue that can be better sets up two filter screens of mesh variation in size simultaneously, and is better to the filter effect of filter residue.
Preferably, as shown in fig. 2 and 3: the valve plate 19 is fixedly connected in a diffuser 17 which is fixedly connected on the vent hole 2, a dynamic deformation area 20 is arranged around a flow port on the valve plate, in the dynamic deformation area, the hole edge of the flow port is outward in the radial direction, and the thickness of the valve plate is gradually reduced or increased. To better control the generator gas flow, the generator pressure output at different temperatures is made to be consistent. This embodiment can produce the plastic deformation of different amplitudes under the condition of different temperature, pressure through set up the dynamic deformation district around the circulation mouth, and the size of adjustment circulation mouth adjusts gas generator pressure output, guarantees the uniformity that air bag expandes under the different environment.
Preferably, as shown in fig. 2 and 3: the valve plate inner side of the dynamic deformation zone around the orifice of the circulation port is provided with an inwardly concave curved surface 21.
Preferably, as shown in fig. 4: the cross sections of the first spiral groove and the second spiral groove are rectangular, triangular or trapezoidal.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A novel air bag generator is characterized in that: the ignition device comprises a shell, a filter and an ignition tool, wherein the shell comprises an upper shell and a lower shell, the side wall of the lower shell is provided with a vent hole, the top of the upper shell is provided with a mounting hole, a gas generation medicine chamber filled with a non-azide gas generating agent and a sealing cover erected above the gas generation medicine chamber are arranged in the shell, the middle part in the gas generation medicine chamber is provided with an ignition medicine box filled with ignition medicine, the ignition tool is arranged above the ignition medicine box, the top of the ignition tool extends into the sealing cover and is sleeved with a short circuit sleeve, and the filter is arranged between the shell and the; gas generating holes and ignition holes are distributed on the outer walls of the gas generating chamber and the ignition medicine box at intervals;
the filter comprises a filter ring, a first fixing cover and a second fixing cover, the filter ring is cylindrical, the first fixing cover and the second fixing cover are respectively arranged at the top and the bottom of the filter ring, the first fixed cover is fixedly connected with the filter ring, the second fixed cover is fixedly connected with the filter ring, the filter ring consists of a first filter screen, a second filter screen, a heat-insulating layer and an air guide layer, the first filter screen is positioned on the outer side wall of the filter ring, the air guide layer is positioned on the inner side of the first filter screen, the air guide layer is fixedly connected with the first filter screen, the heat insulation layer is arranged at the inner side of the air guide layer, the heat-insulating layer is fixedly connected with the air guide layer, the second filter screen is positioned on the inner side of the heat-insulating layer, and the second filter screen is fixedly connected with the heat-insulating layer;
the air guide layer of the filter ring is provided with a first spiral groove, the outer wall of the filter ring is provided with a second spiral groove, the second spiral groove corresponds to the inter-groove convex part of the first spiral groove, and the first spiral groove corresponds to the inter-groove convex part of the second spiral groove.
2. A novel airbag generator as defined in claim 1 wherein: the second filter screen and the first filter screen are plane diamond-shaped screens, the second filter screen and the first filter screen are integrally formed, a coarse mesh screen body is arranged on the second filter screen, a fine mesh screen body is arranged on the first filter screen, and meshes of the coarse mesh screen body are larger than meshes of the fine mesh screen body; an asbestos textile layer is arranged inside the heat preservation layer, a plurality of meshes are arranged on the asbestos textile layer, and the size of the meshes is between that of the coarse mesh body and that of the fine mesh body.
3. A novel airbag generator as defined in claim 1 wherein: the valve plate is fixedly connected in a diffuser, the diffuser is fixedly connected on the vent hole, a dynamic deformation area is arranged around a flow port on the valve plate, in the dynamic deformation area, the hole edge of the flow port is outward in the radial direction, and the thickness of the valve plate is gradually reduced or increased.
4. A novel airbag generator as defined in claim 3 wherein: the valve plate inner side of the dynamic deformation area around the orifice of the circulation port is provided with an inward concave curved surface.
5. A novel airbag generator as defined in claim 1 wherein: the cross sections of the first spiral groove and the second spiral groove are rectangular, triangular or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740021.5U CN209888811U (en) | 2019-05-22 | 2019-05-22 | Novel safety airbag generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740021.5U CN209888811U (en) | 2019-05-22 | 2019-05-22 | Novel safety airbag generator |
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| Publication Number | Publication Date |
|---|---|
| CN209888811U true CN209888811U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920740021.5U Active CN209888811U (en) | 2019-05-22 | 2019-05-22 | Novel safety airbag generator |
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| CN (1) | CN209888811U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112061072A (en) * | 2020-08-13 | 2020-12-11 | 均胜汽车安全系统(湖州)有限公司 | Gas generator capable of reducing influence of ambient temperature on performance |
| CN113310362A (en) * | 2021-05-11 | 2021-08-27 | 南京理工大学 | Fuel gas generator with cooling chamber |
| CN114559895A (en) * | 2022-02-24 | 2022-05-31 | 均胜汽车安全系统（长兴）有限公司 | Small-size firework formula gas generator of multi-functional filter screen structure |
-
2019
- 2019-05-22 CN CN201920740021.5U patent/CN209888811U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112061072A (en) * | 2020-08-13 | 2020-12-11 | 均胜汽车安全系统(湖州)有限公司 | Gas generator capable of reducing influence of ambient temperature on performance |
| CN113310362A (en) * | 2021-05-11 | 2021-08-27 | 南京理工大学 | Fuel gas generator with cooling chamber |
| CN113310362B (en) * | 2021-05-11 | 2024-05-03 | 南京理工大学 | Gas generator with cooling chamber |
| CN114559895A (en) * | 2022-02-24 | 2022-05-31 | 均胜汽车安全系统（长兴）有限公司 | Small-size firework formula gas generator of multi-functional filter screen structure |
| CN114559895B (en) * | 2022-02-24 | 2024-02-27 | 均胜汽车安全系统（长兴）有限公司 | Small pyrotechnic gas generator with multifunctional filter screen structure |
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