CN101062675A - Igniting means and gas generator having the same - Google Patents
Igniting means and gas generator having the same Download PDFInfo
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- CN101062675A CN101062675A CN 200610060492 CN200610060492A CN101062675A CN 101062675 A CN101062675 A CN 101062675A CN 200610060492 CN200610060492 CN 200610060492 CN 200610060492 A CN200610060492 A CN 200610060492A CN 101062675 A CN101062675 A CN 101062675A
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- housing
- ignition device
- gunpowder
- combustion
- gas generator
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Abstract
The ignition device for aerogenerator for air bag, safety belt pre-restrainer comprises the hollow shell stuffed with compressed gun powder, top of the shell set with sealing layer inside the cavity to enclose the gun powder, inner bottom of the shell set with electric resistance isolated with the shell, with both ends of the electric resistance connected to the guide lines stuck out of the shell, a layer of ignition charge formed on the surface of the electric resistance surface. It is an aerogenerator with ignition device. It is low in cost, simplified in structure, improved in reliability.
Description
Technical field
The present invention relates to a kind of ignition device of using as the gas generator of the safety air bag used on the car or safety belt pretensioner, especially relate to and a kind ofly can reduce cost, greatly simplify the structure of gas generator, improved the ignition device of the reliability of gas generator use simultaneously, and a kind of gas generator with this ignition device.
Background technology
At present, safety air bag, safety belt pretensioner have become the basic configuration of manned vehicle, as correct use, can alleviate the degree that the occupant in the traffic accident is hurt greatly and reduce mortality, have obtained generally acknowledging and widespread use of society.Gas generator is the core component of safety belt pretensioner and safety air bag, be power to be provided and to provide source of the gas for the Nylon Bag inflation of safety air bag for tightening up safety strap in moment that traffic accident takes place, therefore, can gas generator failure-free work, huge to the expansion influential effect of the Nylon Bag of the effect of safety strap pre-tightening and safety air bag.Present widely used safety strap with gas generator and air-cushion inflator as described in the 200320109759th and No. 200420081761 patent of China.
The ignition device structure of the gas generator of No. 200320109759 patent wherein, be provided with squib, squib is provided with a medicine box, the periphery of squib and medicine box also is provided with guard shield, around guard shield, be filled with gas generant composition in accordance, the process of its igniting is: automobile bump after ECU (central electronic control unit) to be judged as impact strength bigger, for guaranteeing occupant's security needs, can control safety belt pretensioner and reach safety air bag work, promptly by giving cooresponding gas generator input spark current, at this moment the resistor wire in the squib in the gas generator can generate heat and light coating thereon the igniting medicament of thermoae its sensitivity produced faint spark, this faint spark and then light to flame sensitivity and the bigger igniter of power, igniter is broken through the shell of squib and is jetted out flames after lighting, burn the shell of medicine box, and then medicine is fired in the expansion of lighting in the medicine box, to produce bigger flame, burn guard shield simultaneously and light gas generant composition in accordance, produce safety belt pretensioner and reach the needed gas of safety air bag.No. 200420081761 patent then is to have quoted No. 200320109759 ignition device that patent discloses of two covers.
But, pass fiery process as can be known from above-mentioned point, the part energy that is produced is the housing that is used to open squib, the housing and the guard shield of medicine box, it is the expenditure of energy that belongs to non-direct acting, concerning the actual functional capability of gas generator system, do not work, so it can be had a greatly reduced quality to the efficiency-cost ratio (or cost performance) that improves gas generator.We know simultaneously, and link is few more in the series connection link, and the reliability of its system is high more, and efficiency-cost ratio (or cost performance) is also just high more.The whole igniting of above-mentioned gas generator and to pass fiery process long; required time is many; if adopt a plurality of gas generators; the point of ignition deviation of each gas generator is also bigger so; therefore require very tight to the technology controlling and process in the producting rule; cost the protection effect of safety strap and safety air bag often occurs influencing because of the deviation of biography fire time also than higher in actual the use.
Summary of the invention
In view of above-mentioned deficiency, main purpose of the present invention is to provide a kind of can reduce cost, greatly simplify the structure of gas generator, improved the ignition device of the reliability of gas generator use simultaneously, and a kind of gas generator with this ignition device.
The objective of the invention is to be achieved through the following technical solutions:
Ignition device of the present invention is provided with a hollow housing, is filled with the gunpowder by tight pressing in the especially described enclosure interior cavity, is provided with sealing layer in the internal cavities that is used for gunpowder is sealed in housing at the napex of this housing; The inner bottom surface of described housing is provided with the resistor wire with the housing mutually insulated, and the two ends of this resistor wire are electrically connected with the lead that passes the outside power connection, and this resistor wire outside face is formed with one deck ignition charge.
On the said structure basis, wherein:
Described sealing layer is made up of packing seal and combustion-supporting net, and wherein the cross sectional shape of the shape of packing seal and housing mates, and reclines with gunpowder.On this basis:
Described combustion-supporting net refers to dash a plurality of apertures, and doses one or more aluminum alloy web plates in spontaneously inflammable magnesium, boron, zirconium or the sodium.
Be formed with slot on the described housing, the limit portion of described combustion-supporting net is plugged in this slot and fixes.
The hollow cavity of described housing is a cavity that is ladder counterbore shape.
Described gunpowder is meant igniter, perhaps expands the combustion medicine, perhaps is divided into two-layerly, and lower floor is an igniter, and the upper strata is for expanding the combustion medicine.
Gas generator of the present invention, be provided with shell, be distributed with deflation hole on this shell, in this shell gas generant composition in accordance is housed, be equiped with at least one ignition device in this shell, this ignition device is provided with a hollow housing, is filled with the gunpowder by tight pressing in the especially described enclosure interior cavity, is provided with sealing layer in the internal cavities that is used for gunpowder is sealed in housing at the napex of this housing; The inner bottom surface of described housing is provided with the resistor wire with the housing mutually insulated, and the two ends of this resistor wire are electrically connected with the lead that passes the outside power connection, and this resistor wire outside face is formed with one deck ignition charge; Described gas generant composition in accordance covers on the ignition device, and sealing layer is buried.
On the said structure basis, wherein:
Described sealing layer is made up of packing seal and combustion-supporting net, and wherein the cross sectional shape of the shape of packing seal and housing mates, and reclines with gunpowder.On this basis:
Described combustion-supporting net refers to dash a plurality of apertures, and doses one or more aluminum alloy web plates in spontaneously inflammable magnesium, boron, zirconium or the sodium.
Be formed with slot on the described housing, the limit portion of described combustion-supporting net is plugged in this slot and fixes.
The hollow cavity of described housing is a cavity that is ladder counterbore shape.
Described gunpowder is meant igniter, perhaps expands the combustion medicine, perhaps is divided into and expands combustion medicine and the bilevel gunpowder of igniter.
The invention has the advantages that, the disappeared housing of existing squib shell and medicine box of the structure of ignition device of the present invention, and combustion-supporting online aperture, more strengthened the area of contact of gunpowder and gas generant composition in accordance, drop to the expenditure of energy of non-direct acting minimum, reduced dosing, also simplified conventional gas generator point simultaneously and passed fiery structure.And adopt the gas generator of this ignition device, and simplified the structure of conventional gas generator, reduced the effect link simultaneously, improved the reliability of a body producer, reduce cost, made production technology easier, thereby can improve the efficiency-cost ratio (or cost performance) of gas generator greatly.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the cross-sectional view of ignition device of the present invention.
Fig. 2 is the cross-sectional view that the present invention has the gas generator of ignition device shown in Figure 1.
Fig. 3 is the cross-sectional view that the present invention has the gas generator of two ignition devices shown in Figure 1.
The specific embodiment
See also Fig. 1, ignition device of the present invention, be provided with a hollow housing 38, the hollow cavity of this housing 38 is cavitys that are ladder counterbore shape, the bottom surface of this cavity is provided with the resistor wire 13 with housing 38 mutually insulateds, the two ends of this resistor wire 13 are electrically connected with lead 32, this lead 32 passes housing 38 outsides and electric power connecting by housing 38 bottoms, with electric power connecting before also be provided with short circuit device 36 on this lead 32, outside face at this resistor wire 13 is formed with one deck ignition charge 4, promptly this ignition charge 4 can be to be bonded on the resistor wire 13 by coating, can be to be bonded on the resistor wire 13 by dipping in, also can be earlier ignition charge 4 to be covered on the resistor wire 13 after overcompaction forms, the wherein latter is the saving of labor the most.Then, igniter 16 (or expand gunpowder such as combustion medicine, perhaps be divided into two-layerly, lower floor is an igniter, and the upper strata is for expanding the combustion medicine) directly is contained in the cavity of housing 38,, closely contacts, seal with sealing layer at last with ignition powder 4 again by tight pressing.
Described sealing layer is made up of packing seal 15 and combustion-supporting net 17, and wherein the cross sectional shape of the shape of packing seal 15 and housing 38 mates, and reclines with igniter 16.Described combustion-supporting net 17 refers to dash a plurality of apertures 12, and doses one or more aluminum alloy web plates in spontaneously inflammable magnesium, boron, zirconium or the sodium.And the corresponding slot that is formed with on the described housing 38, the limit portion of described combustion-supporting net 17 is plugged in this slot and fixes.
See also Fig. 2, the present invention has the gas generator of above-mentioned ignition device, be provided with shell 19, be distributed with deflation hole 10 on this shell 19, its chief is equiped with an above-mentioned ignition device and (also can be equiped with two certainly, as shown in Figure 3 in this shell 19, or it is more a plurality of), in this shell 19 gas generant composition in accordance is housed, this gas generant composition in accordance covers on the ignition device, and sealing layer is buried.
Claims (12)
1. an ignition device is provided with a hollow housing, it is characterized in that: be filled with the gunpowder by tight pressing in the described enclosure interior cavity, be provided with sealing layer in the internal cavities that is used for gunpowder is sealed in housing at the napex of this housing; The inner bottom surface of described housing is provided with the resistor wire with the housing mutually insulated, and the two ends of this resistor wire are electrically connected with the lead that passes the outside power connection, and this resistor wire outside face is formed with one deck ignition charge.
2. ignition device as claimed in claim 1 is characterized in that: described sealing layer is made up of packing seal and combustion-supporting net, and wherein the cross sectional shape of the shape of packing seal and housing mates, and reclines with gunpowder.
3. ignition device as claimed in claim 2 is characterized in that: described combustion-supporting net refers to dash a plurality of apertures, and doses one or more aluminum alloy web plates in spontaneously inflammable magnesium, boron, zirconium or the sodium.
4. ignition device as claimed in claim 2 is characterized in that: be formed with slot on the described housing, the limit portion of described combustion-supporting net is plugged in this slot and fixes.
5. as any described ignition device of claim 1 to 4, it is characterized in that: the hollow cavity of described housing is a cavity that is ladder counterbore shape.
6. ignition device as claimed in claim 5 is characterized in that: described gunpowder is meant igniter, perhaps expands the combustion medicine, perhaps is divided into two-layerly, and lower floor is an igniter, and the upper strata is for expanding the combustion medicine.
7. gas generator, be provided with shell, be distributed with deflation hole on this shell, in this shell gas generant composition in accordance is housed, be equiped with at least one ignition device in this shell, this ignition device is provided with a hollow housing, it is characterized in that: be filled with the gunpowder by tight pressing in the described enclosure interior cavity, be provided with sealing layer in the internal cavities that is used for gunpowder is sealed in housing at the napex of this housing; The inner bottom surface of described housing is provided with the resistor wire with the housing mutually insulated, and the two ends of this resistor wire are electrically connected with the lead that passes the outside power connection, and this resistor wire outside face is formed with one deck ignition charge; Described gas generant composition in accordance covers on the ignition device, and sealing layer is buried.
8. gas generator as claimed in claim 7 is characterized in that: described sealing layer is made up of packing seal and combustion-supporting net, and wherein the cross sectional shape of the shape of packing seal and housing mates, and reclines with gunpowder.
9. gas generator as claimed in claim 8 is characterized in that: described combustion-supporting net refers to dash a plurality of apertures, and doses one or more aluminum alloy web plates in spontaneously inflammable magnesium, boron, zirconium or the sodium.
10. gas generator as claimed in claim 8 is characterized in that: be formed with slot on the described housing, the limit portion of described combustion-supporting net is plugged in this slot and fixes.
11. as any described gas generator of claim 7 to 10, it is characterized in that: the hollow cavity of described housing is a cavity that is ladder counterbore shape.
12. gas generator as claimed in claim 11 is characterized in that: described gunpowder is meant igniter, perhaps expands the combustion medicine, perhaps is divided into and expands combustion medicine and the bilevel gunpowder of igniter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610060492 CN101062675A (en) | 2006-04-26 | 2006-04-26 | Igniting means and gas generator having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610060492 CN101062675A (en) | 2006-04-26 | 2006-04-26 | Igniting means and gas generator having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101062675A true CN101062675A (en) | 2007-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610060492 Pending CN101062675A (en) | 2006-04-26 | 2006-04-26 | Igniting means and gas generator having the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101062675A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462530B (en) * | 2007-12-21 | 2011-05-25 | 比亚迪股份有限公司 | Vessel for gas generator composition and sealing method thereof |
| CN102124297A (en) * | 2009-01-15 | 2011-07-13 | 大赛璐化学工业株式会社 | Gas generator for restraining device of vehicle |
| CN102123889A (en) * | 2008-10-08 | 2011-07-13 | 高田-彼得里公开股份有限公司 | Gas generator for an airbag module |
| CN110778418A (en) * | 2019-09-27 | 2020-02-11 | 上海新力动力设备研究所 | Fixed protective cover of electric ignition head |
-
2006
- 2006-04-26 CN CN 200610060492 patent/CN101062675A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462530B (en) * | 2007-12-21 | 2011-05-25 | 比亚迪股份有限公司 | Vessel for gas generator composition and sealing method thereof |
| CN102123889A (en) * | 2008-10-08 | 2011-07-13 | 高田-彼得里公开股份有限公司 | Gas generator for an airbag module |
| CN102123889B (en) * | 2008-10-08 | 2014-06-04 | 高田-彼得里公开股份有限公司 | Gas generator for an airbag module |
| CN102124297A (en) * | 2009-01-15 | 2011-07-13 | 大赛璐化学工业株式会社 | Gas generator for restraining device of vehicle |
| CN102124297B (en) * | 2009-01-15 | 2013-09-25 | 大赛璐化学工业株式会社 | Gas generator for restraining device of vehicle |
| CN110778418A (en) * | 2019-09-27 | 2020-02-11 | 上海新力动力设备研究所 | Fixed protective cover of electric ignition head |
| CN110778418B (en) * | 2019-09-27 | 2021-12-07 | 上海新力动力设备研究所 | Fixed protective cover of electric ignition head |
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Open date: 20071031 |