CN2654450Y - Safety gas bag gas generator - Google Patents
Safety gas bag gas generator Download PDFInfo
- Publication number
- CN2654450Y CN2654450Y CNU2003201097590U CN200320109759U CN2654450Y CN 2654450 Y CN2654450 Y CN 2654450Y CN U2003201097590 U CNU2003201097590 U CN U2003201097590U CN 200320109759 U CN200320109759 U CN 200320109759U CN 2654450 Y CN2654450 Y CN 2654450Y
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- China
- Prior art keywords
- squib
- upper shell
- air
- shell
- lower house
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- Expired - Fee Related
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Abstract
The utility model discloses a gas generator of an air bag arranged on the driver side, which comprises a shell, wherein the shell is composed of an upper shell and a lower shell connected with the upper shell; a plurality of air exit holes are distributed on the side of the upper shell and a locating hole is slotted on the lower shell; an orbicular dust gauze is arranged on the inside diameter of the shell; an electricity igniter squib is arranged on the centre of the lower shell and a cartridge pouch is arranged on the electricity igniter squib; a protecting cap is arranged on the surrounding of the electricity igniter squib and the cartridge pouch; a plurality of aerogenous drugs are arranged in the space formed by the dust gauze and the protecting cap; a coping is arranged upwards the dust gauze; a big feltless pad is arranged on the coping and one end of the lower shell near the aerogenous drugs respectively and a small feltless pad is arranged the joint of the big feltless pad and the electricity igniter squib. The utility model adopts an electronic fireworks type gas generator and a short-circuiting device, and has the advantages of simple structure, good performances of static-free and anti-jamming, none environment pollution, low cost and good safety, therefore is suitable for mass produce.
Description
Technical field
The utility model belongs to safety protection technique, relates to the air-cushion inflator that a kind of automobile driver side is installed.
Background technology
At present, be accompanied by the fast development of Domestic Automotive Industry, traffic accident has become the social concern that is on the rise.Safety strap and safety air bag are used the injury rate that can reduce chaufeur greatly, and according to statistics: safety air bag can make chaufeur head injuries rate reduce 25% when car collision, and facial injury rate reduces about 80%.External gas generator development is morning, and kind is a lot.First generation gas generator is the mechanical impact formula, and gas producing medicinal mostly is the sodium azide type medicament.This gas generator mechanical impact complex structure, volume is big, the cost height, and medicament toxicity is bigger, is unfavorable for environmental protection, and the trend that is eliminated is arranged.Development at present is comparatively advanced has electronics pyrotechnic and electronics hybrid etc.
Summary of the invention
The purpose of this utility model is, a kind of gas production rate height, air-cushion inflator that volume is little, simple in structure, with low cost are provided.
Realize that the technical scheme that above-mentioned purpose is taked is, a kind of air-cushion inflator comprises a housing, and housing is made of with upper shell bonded assembly lower house upper shell and, and the side of upper shell is distributed with deflation hole, and lower house is provided with installation or knock hole; Be characterized in, the internal diameter of housing is provided with the ring-type filtering net, in the central authorities of lower house one squib is installed, and squib is provided with a medicine box, the periphery of squib and medicine box also is provided with guard shield, and gas generant composition in accordance also is housed in the space that forms between filter screen and guard shield; Filtering net is provided with a top cover, and top cover and lower house are respectively arranged with big felt pan near an end of gas medicine, and the junction of big felt pan and squib also has little felt pan.
Its some characteristics of the present utility model are that described filtering net is formed by 18 orders or 28 purpose fine groove net volume systems.
Also be bonded with the lead-in that seals on the described upper shell, be used to block the deflation hole on the upper shell.
Described medicine box is closed up and is formed by aluminum hull, cover plate priming.
Described squib is formed through friction welding by bearing and lower house, in decorate fire tube and close up.
Gas generator of the present utility model has been drawn the advanced experience of external product, has adopted the electronics pyrotechnic.It is simple in structure, and cost is low, is fit to batch manufacturing.The parts of this gas generator all adopt the domestic standard material, and stable sources of supply is arranged.Can electrostatic prevention, disturbance rejection, non-environmental-pollution.Its structure self has short circuit device, has guaranteed the security of products energy.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model working process scheme drawing.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing and contriver is described in further detail the utility model is bright.
1. purposes
Air-cushion inflator is the propulsion source of preparing for the driver side safety air bag of BYD Flair automobile development specially.
2. product structure
Referring to Fig. 1, the utility model comprises a housing, housing by upper shell 1 and one and upper shell 1 bonded assembly lower house 12 constitute, the side of upper shell 1 is distributed with deflation hole, lower house 12 is provided with to be installed or knock hole; The internal diameter of housing is provided with ring-type filtering net 2, central authorities at lower house 12 are equipped with a squib 8, squib 8 is provided with a medicine box 4, and the periphery of squib 8 and medicine box 4 also is provided with guard shield 9, also has gas generant composition in accordance 5 in the space that forms between filter screen 2 and guard shield 9; Filtering net 2 is provided with a top cover 3, and top cover 3 and lower house 12 are respectively arranged with big felt pan 6 near an end of gas medicine 5, and the junction of big felt pan 6 and squib 8 also has little felt pan 7.
Housing is bonded by upper shell 1 and lead-in, it mainly is the deflation hole of blocking on the upper shell, seal, filtering net 2 by 18 orders or 28 purpose fine groove net volumes circlewise, the groove of being close to medicine box 4 is left in the centre of top cover 3, medicine box 4 is by aluminum hull, the igniter of cover plate 3 and interior dress thereof closes up and forms, gas generant composition in accordance 5 is No. 2 gas generant composition in accordance that the applicant develops voluntarily, it is a kind of non-azide type gas generant composition in accordance (applying for patent of invention separately), this novel gas generant composition in accordance gas production rate height, the relative wall sodium azide of gas production rate gas generant composition in accordance has more 1/3, and residue is few and toxicity is little, is international newer at present environment-friendly type gas producing medicinal.
Big felt pan 6 is separately positioned between lower house and the cover plate 3, little felt pan 7 is arranged on the joint portion of the bearing and the big felt pan 6 of squib 8, squib 8 is formed by the bearing and lower house 1 friction welding of squib, in decorate fire tube and close up and to form, guard shield 9 be arranged on squib 8 and medicine box 4 around, make squib 8 and medicine box 4 form one, also be distributed with pore on the guard shield 9; In the outer end of lower house, can have and install or knock hole, so that fixed placement nut 10 and screw 11.
Housing adopts friction welding with being connected of squib 8, and its technology is simple, with low cost, intensity is higher, and weld time is short, efficient is high, is the optimal welding method of present gas generator.
3. operating needs
3.1 the air-cushion inflator firing current is 1.7A;
3.2 the air-cushion inflator safety current is 0.2A;
3.3 the suitable environment temperature is-35 ℃～+ 85 ℃;
3.4 air-cushion inflator passes to the 1.7A DC current, carries out the test of P-T curve in volume is the leakproof tank of 60L, should satisfy time to peak is 10ms～65ms, and peak pressure is 0.1MPa～0.2MPa.
4. the principle of work of air-cushion inflator
Referring to Fig. 2, after automobile bumped, the sensor of the Central Processing Unit (CPU) in the air bag system (ECU) received the CPU (central process unit) that passes to behind the collision alarm among the ECU, judges by CPU whether it meets or exceeds predetermined threshold values.If do not reach this threshold values, (automobile all is lower than threshold values at the road bump of the recessed injustice in hole or the signal of generation such as firmly close the door), then the squib power supply is in closed condition; When in a single day collision alarm reaches or surmounted this reservation threshold, CPU promptly sends energizing signal to the squib power supply, makes the squib power connection.Ignition point gunpowder after squib is got angry, igniter refires gas generant composition in accordance.A large amount of gases that gas generant composition in accordance burning back produces, moment is full of airbag.When chaufeur hit bearing circle suddenly under huge force of inertia effect, airbag played the protective effect of isolation buffer, avoids human casualty accident to greatest extent.
5. air-cushion inflator product structure feature
Air-cushion inflator is simple in structure, reliable in quality, and shop characteristic is good, is fit to batch manufacturing.These gas generator parts all adopt the domestic standard material, and stable sources of supply is arranged.Cost is low, can electrostatic prevention, and disturbance rejection, non-environmental-pollution.Its structure self has short circuit device, has guaranteed the security of products energy.
The item that should note when 6, air-cushion inflator uses
6.1 air-cushion inflator must detect resistance before assembling, resistance range is 2.0 ± 0.2 Ω;
6.2 air-cushion inflator should leave drying, breezy storehouse in, and storehouse should not have burning things which may cause a fire disaster, nothing roof leaking, non-corrosiveness etc.
6.3 the transportation of air-cushion inflator must meet the relevant regulations of national carriage of dangerous goods,
6.4 the transportation means of air-cushion inflator should have the reliable protection facility, avoids wind, drenches with rain, sunlight direct projection and thunderbolt.
6.5 air-cushion inflator should be handled with care in storage and handling process, height of embankment can not surpass 1.5 meters, and the buttress distance should not be less than 0.8 meter.
6.6 under air-proof condition, deposited 15 years.
Claims (5)
1. an air-cushion inflator comprises a housing, housing by upper shell [1] and one and upper shell [1] bonded assembly lower house [12] constitute, the side of upper shell [1] is distributed with deflation hole, lower house [12] is provided with to be installed or knock hole; It is characterized in that, the internal diameter of housing is provided with ring-type filtering net [2], central authorities at lower house [12] are equipped with a squib [8], squib [8] is provided with a medicine box [4], the periphery of squib [8] and medicine box [4] also is provided with guard shield [9], also has gas generant composition in accordance [5] in the space that forms between filter screen [2] and guard shield [9]; Filtering net [2] is provided with a top cover [3], and top cover [3] and lower house [12] are respectively arranged with big felt pan [6] near an end of gas medicine [5], and the junction of big felt pan [6] and squib [8] also has little felt pan [7].
2. air-cushion inflator as claimed in claim 1 is characterized in that, described filtering net [2] is formed by 18 orders or 28 purpose fine groove net volume systems.
3. air-cushion inflator as claimed in claim 1 is characterized in that, described upper shell also is bonded with the lead-in that seals on [1], is used to block the deflation hole on the upper shell.
4. air-cushion inflator as claimed in claim 1 is characterized in that, described medicine box [4] is closed up and formed by aluminum hull, cover plate priming.
5. air-cushion inflator as claimed in claim 1 is characterized in that, described squib [8] is formed through friction welding by bearing and lower house [12], in decorate fire tube and close up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201097590U CN2654450Y (en) | 2003-11-13 | 2003-11-13 | Safety gas bag gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201097590U CN2654450Y (en) | 2003-11-13 | 2003-11-13 | Safety gas bag gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2654450Y true CN2654450Y (en) | 2004-11-10 |
Family
ID=34343385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201097590U Expired - Fee Related CN2654450Y (en) | 2003-11-13 | 2003-11-13 | Safety gas bag gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2654450Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379610C (en) * | 2006-03-10 | 2008-04-09 | 中国航天科技集团公司第四研究院第四十二所 | Air generator for principal driver |
| CN110766982A (en) * | 2019-09-26 | 2020-02-07 | 浙江从泰网络科技有限公司 | Vehicle collision detection system based on vehicle-mounted sensor |
-
2003
- 2003-11-13 CN CNU2003201097590U patent/CN2654450Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379610C (en) * | 2006-03-10 | 2008-04-09 | 中国航天科技集团公司第四研究院第四十二所 | Air generator for principal driver |
| CN110766982A (en) * | 2019-09-26 | 2020-02-07 | 浙江从泰网络科技有限公司 | Vehicle collision detection system based on vehicle-mounted sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI AN NORTH QINGHUA ELECTROMECHANICAL GROUP CO.,L Free format text: FORMER OWNER: BEIFANG QINGHUA ELECTRICAL APPLIANCE (GROUP) CO. LTD., XI AN Effective date: 20060616 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060616 Address after: 710025, 1 East Wang Tian street, Xi'an City, Shaanxi Province Patentee after: Xi'an Beifang Qinghua Electromechanical Group Co., Ltd. Address before: 710025, 1 East Wang Tian street, Xi'an City, Shaanxi Province Patentee before: Xian Beifang Qinghua electric appliance (Group) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041110 Termination date: 20121113 |