CN204210421U - A kind of belt with pre-load device micro gas generator - Google Patents
A kind of belt with pre-load device micro gas generator Download PDFInfo
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- CN204210421U CN204210421U CN201420694656.3U CN201420694656U CN204210421U CN 204210421 U CN204210421 U CN 204210421U CN 201420694656 U CN201420694656 U CN 201420694656U CN 204210421 U CN204210421 U CN 204210421U
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- igniter
- injection moulding
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- gas generator
- belt
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Abstract
The utility model discloses a kind of belt with pre-load device micro gas generator, comprise injection moulding igniter, shell is connected with in injection moulding igniter bottom, O shape rubber ring is housed between shell and injection moulding igniter, fill gas generant composition in accordance in shell, injection moulding igniter and shell are fixed together by tight mouth sealing technology; Short-circuit component is connected with on the top of injection moulding igniter.The utility model solves mechanical sealing process seal weak effect in prior art, the problem that reliability is not high.
Description
Technical field
The utility model belongs to gas generator technology field, relates to a kind of belt with pre-load device low cost micro gas generator.
Background technology
In belt with pre-load device, micro gas generator is very important parts, and its effect in specific time, produces certain pressure promote the motion of belt with pre-load device cylinder piston, thus produce the power of tighten seat belt.As can be seen here, the quality of micro gas generator performance is directly connected to the protected effect of belt with pre-load device to occupant safety.
Current micro gas generator is made up of parts such as base, shell, squib, gas generant composition in accordance, O shape rubber rings, O shape rubber ring is housed by tight mouth process seal between squib and base.
The disclosed micro gas generator of Chinese patent (patent No. is 200320109757.1, and publication date is 2004-11-10, and publication number is 2654451), it comprises base, shell, squib, gas generant composition in accordance, O shape rubber ring etc.The lower central of base fixedly mounts a squib, has O shape rubber ring and from collar, sealed by tight mouth between base and squib.Tight mouth sealing after adopting gluing between base and shell.
The disclosed micro gas generator of Chinese patent (patent No. is 201120380853.4, publication date 2012-5-30, and publication number is CN202243333), it comprises base, shell, squib, gas generant composition in accordance, O shape rubber ring etc.The lower central of base fixedly mounts a squib, has O shape rubber ring and from collar, fixed and sealing by tight mouth between base and squib.Tight mouth sealing after setting up O shape rubber ring between base and shell.
Along with the development of auto-industry, auto parts and components development tendency, towards future developments such as weight lightness, volume miniaturization, dependable performances, to alleviate vehicle weight, is saved inner space of vehicle, is reduced costs, reduce fault rate etc.Above-mentioned two kinds of micro gas generators have between base and squib O shape rubber ring with from collar, by tight mouth process seal, its complex structural designs, require high to element size, cost is higher, and sealing effectiveness is bad, and technological process easily produces aluminium bits affects product electrical property, reliability is not high, loses ground gradually in market competition.
Utility model content
The purpose of this utility model is to provide a kind of belt with pre-load device micro gas generator, solves mechanical sealing process seal weak effect in prior art, the problem that reliability is not high.
The technical solution of the utility model is, a kind of belt with pre-load device micro gas generator, comprise injection moulding igniter, shell is connected with in injection moulding igniter bottom, O shape rubber ring is housed between shell and injection moulding igniter, fill gas generant composition in accordance in shell, injection moulding igniter and shell are fixed together by tight mouth sealing technology; Short-circuit component is connected with on the top of injection moulding igniter.
Feature of the present utility model is also,
The structure of injection moulding igniter, comprises base and squib ignition module, is the plastic body that injection moulding is formed, and by this plastic body, base and squib ignition module is combined into an entirety between base and squib ignition module.
In the chamber that the electrode needle that short-circuit component is contained in plastic body and squib ignition module is formed, before gas generator does not use, play short-circuit protection effect.
The beneficial effects of the utility model are, adopt moulding and sealing process to instead of the tight mouth sealing technology of mechanical type, and by base and squib ignition module sealed junction integrator, thus structure is simple, and with low cost, good airproof performance, reliability is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of injection molding micro gas generator;
Fig. 2 is the structural representation of the injection moulding igniter in the utility model injection molding micro gas generator;
Fig. 3 is the external structure schematic diagram of the utility model injection molding micro gas generator.
In figure, 1. short-circuit component, 2. injection moulding igniter, 3.O shape is enclosed, 4. shell, 5. gas generant composition in accordance, 21. bases, 22. plastic bodies, 23. squib ignition module, 24. electrode needle.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
A kind of belt with pre-load device micro gas generator of the utility model, as shown in Figure 1, comprise injection moulding igniter 2, shell 4 is connected with in injection moulding igniter 2 bottom, O shape rubber ring 3 is housed between described shell 4 and injection moulding igniter 2, fill gas generant composition in accordance 5 in described shell 4, injection moulding igniter 2 and shell 4 are fixed together by tight mouth sealing technology; Short-circuit component 1 is connected with on the top of described injection moulding igniter 2;
Wherein, the structure of described injection moulding igniter 2, as shown in Figure 2, comprise base 21 and squib ignition module 23, be the plastic body 22 that injection moulding is formed between described base 21 and squib ignition module 23, and by this plastic body 22, base 21 and squib ignition module 23 be combined into an entirety.
In the chamber that the electrode needle 24 that described short-circuit component 1 is contained in plastic body 22 and squib ignition module 23 is formed, before gas generator does not use, play short-circuit protection effect.
During fabrication, base 1 and squib ignition module 3 are combined into injection moulding igniter 2 to described injection moulding igniter 2 by the molten state plastics formation plastic body 2 being sprayed High Temperature High Pressure by injection machine, as shown in Figure 2.Then will an O shape rubber ring be set between the injection moulding igniter 2 manufactured and the shell 4 that gas generant composition in accordance 5 is housed, and then injection moulding igniter 2 and shell 4 are fixed together by tight mouth sealing technology, thus make belt with pre-load device micro gas generator of the present utility model, its outer shape is as shown in Figure 3.
A kind of belt with pre-load device micro gas generator of the utility model, in use, is arranged on automobile belt with pre-load device.When automobile collides; signal received by vehicle electronics Central Processing Unit (CPU) (ECU); calculate and judge that backward squib ignition module 3 is powered; the gas generant composition in accordance 5 in the utility model shell 4 lighted by igniter in the ignition of squib ignition module; high temperature, high pressure gas that gas generant composition in accordance 5 produces after burning, break through the rice font groove bottom shell 4, promotes the motion of belt with pre-load device cylinder piston; produce power tighten seat belt, protection passenger safety.
The utility model substitutes tight mouth sealing technology by using moulding and sealing process, base and squib ignition module is combined into one.Its structure is simple, with low cost, good sealing effect, and reliability is high.
Advantage of the present utility model and beneficial effect are:
(1) simplify base designs and processing technology, reduce cost of product.
(2) product structure optimization, directly uses squib ignition module to substitute squib and produces, reduce cost of product.
(3) optimize igniter production technology, base and squib ignition module are passed through Shooting Technique sealed junction integrator, does not use O shape rubber ring and seal from the tight mouth of collar, improve leak tightness, reduce cost of product.
(4) optimizing product installs short-circuit component interface position material, adopts engineering plastics alternative metals aluminium, has stopped the impact of aluminium bits on product electrical property, has improve product reliability.
(5) optimizing product production technology, adopts igniter injection step to instead of squib injection step and igniter closing in operation, improves production efficiency, reduce cost of product.
Claims (3)
1. a belt with pre-load device micro gas generator, it is characterized in that, comprise injection moulding igniter (2), shell (4) is connected with in injection moulding igniter (2) bottom, between described shell (4) and injection moulding igniter (2), O shape rubber ring (3) is housed, dress gas generant composition in accordance (5) in described shell (4), is fixed together injection moulding igniter (2) and shell (4) by tight mouth sealing technology; Short-circuit component (1) is connected with on the top of described injection moulding igniter (2).
2. belt with pre-load device micro gas generator according to claim 1, it is characterized in that, the structure of described injection moulding igniter (2), comprise base (21) and squib ignition module (23), be the plastic body (22) that injection moulding is formed between described base (21) and squib ignition module (23), and by this plastic body (22), base (21) and squib ignition module (23) be combined into an entirety.
3. belt with pre-load device micro gas generator according to claim 1 and 2; it is characterized in that; in the chamber that the electrode needle (24) that described short-circuit component (1) is contained in plastic body (22) and squib ignition module (23) is formed, before gas generator does not use, play short-circuit protection effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694656.3U CN204210421U (en) | 2014-11-18 | 2014-11-18 | A kind of belt with pre-load device micro gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694656.3U CN204210421U (en) | 2014-11-18 | 2014-11-18 | A kind of belt with pre-load device micro gas generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204210421U true CN204210421U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420694656.3U Active CN204210421U (en) | 2014-11-18 | 2014-11-18 | A kind of belt with pre-load device micro gas generator |
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| CN (1) | CN204210421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607427A (en) * | 2021-07-30 | 2021-11-05 | 陕西庆华汽车安全系统有限公司 | Performance test device of high-strength miniature gas generator |
-
2014
- 2014-11-18 CN CN201420694656.3U patent/CN204210421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607427A (en) * | 2021-07-30 | 2021-11-05 | 陕西庆华汽车安全系统有限公司 | Performance test device of high-strength miniature gas generator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |