CN204432595U - A kind of gas generator - Google Patents
A kind of gas generator Download PDFInfo
- Publication number
- CN204432595U CN204432595U CN201520060715.6U CN201520060715U CN204432595U CN 204432595 U CN204432595 U CN 204432595U CN 201520060715 U CN201520060715 U CN 201520060715U CN 204432595 U CN204432595 U CN 204432595U
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- CN
- China
- Prior art keywords
- tubular shell
- cup
- gas
- end cover
- gas generator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
A kind of gas generator, there is exhaust end cover tubular shell lower end; Gas throttling parts, tubular shell, cup-shaped igniting housing, igniting pedestal are housed in tubular shell from the bottom to top successively.The exhaust end cover of cup-like structure there is multiple exhausr port.The gas throttling component openings end of cup-like structure is relative with exhaust end cover open end, closed end end face has recess, circle wall has multiple intercommunicating pore.Second self-cocking action medicine is packaged in recess through the second sealed foil.The tubular shell circle wall of epimere large hypomere small stair tubular structure there is multiple through hole.The partial through holes of tubular shell is corresponding with the intercommunicating pore of gas throttling parts to be communicated with; Tubular shell is built with gas generant.Cup-shaped igniting housings close end end face has ring flange, and the first self-cocking action medicine is packaged in ring flange center through the first sealed foil; Ring flange center has one or more to pass burner; Cup-shaped igniting housing is built with the fiery agent of biography.The utility model is easily through flame and slow heat test, and performance is more excellent.
Description
Technical field
The utility model relates to a kind of gas generator, and it is installed on the restraint device in vehicle, such as air bag system etc., particularly relates to a kind of gas generator used in side impact airbag system, for being launched in occupant side by air bag.
Background technology
For the gas generator of vehicle side collision airbag deployment, due to installation site space constraint, be usually designed to dye.Such gas generator must ensure the security regulations of structure integrity by flame assay and slow heat test.
In flame assay and slow heat test, gas generator, relative to heating direction, sets three kinds of test positions:
1, the firing unit of gas generator is towards heating location;
2, the firing unit of gas generator is away from heating location;
3, gas generator axis horizontal is placed and is heated and is positioned in the middle of gas generator.
Compared with the gas generator of disk-like structure, dye structure axial length is long, so when the firing unit carried out in flame or slow heat test is placed away from heating location or gas generator axis horizontal, self-cocking action medicine position or apparatus structure are focused on more, the performance caused due to heat intensive to prevent gas generator shell material reduces, and increases the danger of structure fragmentation.
Summary of the invention
Goal of the invention of the present utility model is to overcome the above-mentioned deficiency of prior art and provides a kind of gas generator of dye, and it is easily through flame and slow heat test, and performance is more excellent.
The technical solution of the utility model is: tubular shell lower end is provided with exhaust end cover; Tubular shell inner chamber is equipped with gas throttling parts, tubular shell, cup-shaped igniting housing, igniting pedestal from the bottom to top successively.
The cup-shaped structure of described exhaust end cover, its open at one end is connected with tubular shell lower end; Described exhaust end cover is provided with multiple exhausr port.
The cup-shaped structure of described gas throttling parts, its open end is relative with exhaust end cover open end; Described gas throttling component openings end is provided with large flange; Described large flange place external diameter equals the tubular shell internal diameter with its corresponding position; Gas throttling parts closed end end face is provided with recess; Second self-cocking action medicine is packaged in recess through the second sealed foil; Gas throttling parts circle wall is provided with multiple intercommunicating pore; Intercommunicating pore quantity is preferably the odd number of 5-9.
Described tubular shell is the little step tubular structure of the large hypomere of epimere; Small stair section lower end is installed in gas throttling parts outer circle wall; Large step section is installed in the inner peripheral wall of described tubular shell; Tubular shell small stair section external diameter is less than the tubular shell internal diameter with its corresponding position; Tubular shell circle wall is provided with multiple through hole; Through-hole diameter is arranged should ensure that described gas generant can not pass, quantity preferably 36 to 64.The partial through holes of tubular shell bottom is corresponding with the intercommunicating pore on gas throttling parts to be communicated with; Described tubular shell built with gas generant, the preferred 3mm to 5mm of diameter, the preferred 1mm to 2mm of thickness.
Described cup-shaped igniting housings close side pressure is loaded on tubular shell upper end; Cup-shaped igniting housings close end end face is provided with ring flange, and the first self-cocking action medicine is packaged in ring flange center through the first sealed foil; Ring flange center is provided with one or more biography burner; Cup-shaped igniting housing is built with the fiery agent of biography; Pass burner to guarantee dimensionally to pass fiery agent or self-cocking action medicine can not pass, or close this biography burner by sealed foil, block and pass fiery agent or self-cocking action medicine passes.
Cup-shaped igniting housing upper end is pressed with igniting pedestal.
Exhausr port on described exhaust end cover is arranged in exhaust end cover circle wall.
Exhausr port on described exhaust end cover is arranged at bottom exhaust end cover.
Described exhaust end cover open end is provided with flange, and flange outer is connected with tubular shell lower end.
The large step section of described tubular shell is rib tubular structure.
Described tubular shell small stair section cylindrically structure.
The length of the large step section of described tubular shell and the length ratio of small stair section are 1:2 ~ 3.
Exhausr port on described exhaust end cover is closed to prevent described gas generant from making moist by sealing band.
Described igniting pedestal outer circle wall is the large step-like structure of the little hypomere of epimere; The closing in of described tubular shell upper end blocks with igniting pedestal small stair portion mutually with fixed ignition pedestal.
Compared with prior art, the utility model has the advantage of: first, second self-cocking action medicine is placed in the recess on the cup-shaped igniting housing ring flange center gentle body segment stream unit closed end end face at tubular shell two ends respectively, the heat be easy to self-cocking action medicine and the fiery agent burning of biography produce by the biography burner on cup-shaped igniting housing gentle body segment stream unit passes to the gas generant being placed in tubular shell inside, when making gas generator carry out flame or slow heat test, firing unit is placed test away from heating location or gas generator axis horizontal and is easier to pass through.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of tubular shell.
Fig. 3 is the A-A cutaway view of Fig. 1.
Detailed description of the invention
In Fig. 1, the utility model comprises the tubular shell 20 that the surface being placed in tubular shell 30 has through hole; In the end side of tubular shell 30, by cup-shaped light a fire housing 12 limit and with pass fiery agent, self-cocking action medicine filling ignition chamber; By tubular shell 20, and gas throttling parts 40 limit and with gas generant, self-cocking action medicine fill combustion chamber; The placement of tubular shell 20 makes to form gap between tubular shell outer circumferential walls and tubular shell 30 circumferential inner wall.
Tubular shell 30 lower end is provided with exhaust end cover 50.Tubular shell 30 inner chamber is equipped with gas throttling parts 40, tubular shell 20, cup-shaped igniting housing 12, igniting pedestal 11 from the bottom to top successively.
Ignition chamber 10 is the ignition devices being arranged on tubular shell 30 upper end 30a.Ignition chamber 10 is made up of the biography fire agent 80 of known ignition tube, graininess or sheet or the combination of gas generant and cup-shaped housing 12 of lighting a fire.Ignition tube flange is fixed in igniting pedestal 11, the biography fire agent 80 of graininess or sheet or the combination loading of gas generant are in cup-shaped igniting housing 12, can select dissociation temperature higher than the formula of 200 DEG C as burster or gas generant, cup-shaped igniting housing can adopt punching press or machine to add or forging and molding.
Cup-shaped igniting housing 12 closed end arranges ring flange 12b, first self-cocking action medicine 100 is fixed in ring flange 12b, and with the first sealed foil 110 closed circular flange 12b open end, dissociation temperature can be selected lower than 200 DEG C, be even low to moderate the formula of 160 DEG C as the first self-cocking action medicine.
Cup-shaped igniting housing 12 outer circle wall 12a contacts by extruding with tubular shell 30 inner peripheral wall 30d surface and fixes.
Exhaust end cover 50 is arranged on the lower end 30b of tubular shell, it has flange at open end 50a and has multiple exhausr port 50c at outer circle wall 50b, exhausr port 50c is closed by sealing band 140, prevent gas generant 60 from making moist, can select 4 diameter 2mm manholes, exhaust end cover can adopt punching press or machine to add or forging and molding.
Gas throttling parts 40 have closed end 40a and open end 40f, the open end 40f of gas throttling parts 40 is towards exhaust end cover 50 and be adjacent to the flange of the open end 50a of exhaust end cover, the open end 40f of gas throttling parts 40 is provided with large flange 40d, and recess 40b is set at closed end 40a place, second self-cocking action medicine 120 is fixed in recess 40b, and closes recess 40b open end with the second sealed foil 130.Dissociation temperature can be selected lower than 200 DEG C, be even low to moderate the formula of 160 DEG C as the second self-cocking action medicine.Gas throttling parts can adopt punching press or machine to add or forging and molding.
The outer circle wall 40e place of gas throttling parts 40 is provided with multiple intercommunicating pore 40c, the intercommunicating pore of 7 diameter 3mm can be arranged.
Tubular shell 20 is placed in tubular shell 30, surface arranges multiple through hole 20c, the equidistant through hole of 8 row can be arranged to, front 7 rows often row are evenly arranged the through hole of 8 2.5mm, and last row near the second open end is evenly arranged the through hole of 7 3mm with corresponding with the intercommunicating pore 40c of 7 on gas throttling parts 40.
The large step section 20a outer circle wall of tubular shell 20 contacts by extrude with tubular shell inner peripheral wall 30e surface and fixes, and its small stair section 20f inner peripheral wall is by contacting with surperficial extruding of gas throttling parts 40 outer circle wall 40e and fix.
Axis and radial direction are fixed by the 30e extruding contact of tubular shell 30 circumferential inner wall surface for cup-shaped igniting housing 12, the gentle body segment stream unit 40 of tubular shell 20, and cup-shaped igniting housing 12 axis, tubular shell 20 axis, gas throttling parts 40 axis are consistent with tubular shell 30 axis.
The large step section maximum outside diameter of tubular shell 20 equals described cylindrical shell housing inner peripheral wall diameter; Small stair section outer circumferential walls external diameter is less than described cylindrical shell housing inner peripheral wall diameter.The large length of step section 20a of tubular shell 20 and the length ratio of small stair section 20f be 1:3(as shown in Figure 2).Large step section 20a can adopt pipe diameter to expand shaping.The large step section of tubular shell is rib tubular structure (as shown in Figure 3).Formed between tubular shell 20 and tubular shell 30 and amplify gap gradually, and form closed end 90 at the large flange 40d place of gas throttling parts 40.
Combustion chamber 70 is surrounded by cup-shaped igniting housing 12 Closed End, tubular shell 20e inner peripheral wall gentle body segment stream unit 40 closed end 40a end face.
Combustion chamber 70 loads gas generant 60.Gas generant 60 can have favourable ignitability and favourable fast burn performance.The embodiment of gas generant 60 can select the round sheet gas generant of diameter 3mm, thickness 1.5mm, and dissociation temperature is higher than the formula of 200 DEG C.
Carry out flame or slow heat test, when firing unit is towards heating location, ignition chamber 10 heats at first, be positioned at the most front arrival dissociation temperature of the first self-cocking action medicine 100 of cup-shaped igniting housing ring flange 12b, first light and be positioned at the biography fire agent 80 of cup-shaped igniting housing 12 or the combination of gas generant, and then produce the gas generant 60 that certain heat gas ignition is positioned at combustion chamber 70, gas generator proper detonation.
When firing unit is away from heating location, the position of heating at first is positioned at the exhaust end cover 50 of tubular shell 30 lower end 30b, along with temperature transmission, heat can be delivered to gas throttling parts 40, be positioned at the most front arrival dissociation temperature of the second self-cocking action medicine 120 of gas throttling member concave portions 40b, produce certain heat, and then light the gas generant 60 being positioned at combustion chamber 70, the combination passing fiery agent 80 or gas generant, gas generator also can proper detonation, and the ignition tube being positioned at the ignition chamber 10 of tubular shell 30 upper end 30a finally detonates.
When gas generator axis horizontal is placed, the position of heating at first is positioned in the middle part of tubular shell 30, along with temperature transmission, heat almost can be delivered to gas throttling parts 40 and cup-shaped igniting housing 12 simultaneously, the the second self-cocking action medicine 120 being positioned at the first self-cocking action medicine 100 gentle body segment stream unit recess 40b of cup-shaped igniting housing ring flange 12b almost reaches dissociation temperature simultaneously, and then producing the gas generant 60 that certain heat gas ignition is positioned at combustion chamber 70, gas generator equally can proper detonation.
According to gas generator of the present utility model, there is structure as described above, easily through flame and slow heat test, do not affect the proper detonation of gas generator.
Above-described embodiment is all illustrate and be not restriction.Technical scope of the present utility model is determined by claims, and comprises the record that is equal to claims and all changes within the scope of this.
Claims (9)
1. a gas generator, is characterized in that: tubular shell (30) lower end is provided with exhaust end cover (50); Tubular shell (30) inner chamber is equipped with gas throttling parts (40), tubular shell (20), cup-shaped igniting housing (12), igniting pedestal (11) from the bottom to top successively;
Described exhaust end cover (50) cup-shaped structure, its open at one end is connected with tubular shell (30) lower end; Described exhaust end cover (50) is provided with multiple exhausr port (50c);
The cup-shaped structure of described gas throttling parts (40), its open end (40f) is relative with exhaust end cover (50) open end (50a); Described gas throttling parts (40) open end (40f) are provided with large flange (40d); Described large flange (40d) place external diameter equals and the tubular shell of its corresponding position (30) internal diameter; Gas throttling parts (40) closed end (40a) end face is provided with recess (40b); Second self-cocking action medicine (120) is packaged in recess (40b) through the second sealed foil (130); Gas throttling parts (40) circle wall is provided with multiple intercommunicating pore (40c);
Described tubular shell (20) the step tubular structure that large hypomere is little in epimere; Small stair section (20f) lower end is installed in gas throttling parts (40) outer circle wall (40e); Large step section (20a) is installed in the inner peripheral wall (30e) of described tubular shell (30); Tubular shell (20) small stair section (20f) external diameter is less than and the tubular shell of its corresponding position (30) internal diameter; Tubular shell (20) circle wall is provided with multiple through hole (20c); The partial through holes (20c) of tubular shell (20) bottom is corresponding with the intercommunicating pore (40c) on gas throttling parts (40) to be communicated with; Described tubular shell (20) is built with gas generant (60);
Described cup-shaped igniting housing (12) closed end press-fits in tubular shell (20) upper end; Cup-shaped igniting housing (12) closed end end face is provided with ring flange (12b), and the first self-cocking action medicine (100) is packaged in ring flange (12b) center through the first sealed foil (110); Ring flange (12b) center is provided with biography burner; Cup-shaped igniting housing (12) is built with the fiery agent of biography (80);
Cup-shaped igniting housing (12) upper end is pressed with igniting pedestal (11).
2. gas generator according to claim 1, is characterized in that: the exhausr port (50c) on described exhaust end cover (50) is arranged in exhaust end cover circle wall.
3. gas generator according to claim 1, is characterized in that: the exhausr port (50c) on described exhaust end cover (50) is arranged at bottom exhaust end cover.
4. gas generator according to claim 1, is characterized in that: described exhaust end cover (50) open end (50a) is provided with flange, and flange outer is connected with tubular shell (30) lower end.
5. gas generator according to claim 1, is characterized in that: the large step section (20a) of described tubular shell (20) is in rib tubular structure.
6. gas generator according to claim 1, is characterized in that: described tubular shell (20) small stair section (20f) cylindrically structure.
7. gas generator according to claim 1, is characterized in that: the large length of step section (20a) of described tubular shell (20) and the length ratio of small stair section (20f) are 1:2 ~ 3.
8. the gas generator according to claim 1,2 or 3, is characterized in that: the exhausr port (50c) on described exhaust end cover (50) is closed to prevent gas generant from making moist by sealing band.
9. gas generator according to claim 1, is characterized in that: described igniting pedestal (11) outer circle wall is the large step-like structure of the little hypomere of epimere; The closing in of described tubular shell (30) upper end blocks with igniting pedestal small stair portion mutually with fixed ignition pedestal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060715.6U CN204432595U (en) | 2015-01-29 | 2015-01-29 | A kind of gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520060715.6U CN204432595U (en) | 2015-01-29 | 2015-01-29 | A kind of gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204432595U true CN204432595U (en) | 2015-07-01 |
Family
ID=53600500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520060715.6U Withdrawn - After Issue CN204432595U (en) | 2015-01-29 | 2015-01-29 | A kind of gas generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204432595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984419A (en) * | 2015-01-29 | 2016-10-05 | 湖北航天化学技术研究所 | Gas generator |
| CN109257930A (en) * | 2016-05-23 | 2019-01-22 | 株式会社大赛璐 | gas generator |
-
2015
- 2015-01-29 CN CN201520060715.6U patent/CN204432595U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984419A (en) * | 2015-01-29 | 2016-10-05 | 湖北航天化学技术研究所 | Gas generator |
| CN105984419B (en) * | 2015-01-29 | 2018-10-30 | 湖北航天化学技术研究所 | A kind of gas generator |
| CN109257930A (en) * | 2016-05-23 | 2019-01-22 | 株式会社大赛璐 | gas generator |
| CN109257930B (en) * | 2016-05-23 | 2021-09-17 | 株式会社大赛璐 | Gas generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20181030 |