A gas generator
By setting a groove structure in the gas generator housing to accommodate the short-circuit clamp, and using a grounding ring to short-circuit the ignition assembly and the housing, the problem of short-circuiting the two electrodes of the igniter is solved, realizing a low-cost and efficient manufacturing process, and ensuring product quality and safety.
Patent Information
- Application Number
- CN202521586418.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-28
AI Technical Summary
In the manufacturing process of existing gas generators, there are difficulties in short-circuiting the two electrodes of the ignition device with the outer casing, resulting in high production costs, complex production processes, and high costs for modifying production line equipment.
The design features a recessed structure in the middle of the outer casing, with the short-circuit clamp housed within the recess. The grounding ring is short-circuited to the short-circuit clamp, and the ignition assembly is short-circuited to the outer casing, simplifying the assembly process and avoiding equipment modifications.
It reduced manufacturing costs, simplified manufacturing processes, improved product quality stability and production safety, and ensured the safety of drivers and passengers.
Smart Images
Figure CN224676054U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive safety technology, specifically to a gas generator. Background Technology
[0002] A disc-shaped pyrotechnic gas generator (referred to as a gas generator) is an inflation device for frontal airbag protection of car occupants. Although disc-shaped pyrotechnic gas generators vary in shape and structure, their basic operating mechanism is the same. For some applications, before installation, the two electrodes of the gas generator's ignition device must be short-circuited to the generator's outer casing to prevent malfunctions due to static electricity or electromagnetic interference. Sufficient desiccant must also be added inside the gas generator to prevent excessive moisture in the propellant or slow absorbing of moisture over time due to insufficient sealing, which could alter the generator's performance.
[0003] While adding desiccant to most gas generators to meet these two specific requirements is not difficult—that is, adding desiccant in the gas production chamber—the solution to the short circuit between the two electrodes of the igniter and the outer casing is not ideal. Currently, most gas generators in the industry use a CNC lathe to machine a metal igniter holder, then mount the igniter onto the holder using a tapered method (a sealing gasket or O-ring is needed between the igniter and the holder to improve the seal after tapering), then weld the metal igniter holder to the outer casing, and finally install an AKⅡ (product model) + short-circuit clamp. The two electrodes and the outer casing are short-circuited by the spring on the short-circuit clamp. Compared with traditional gas generators, this adjustment increases costs and labor, lengthens the production process, and increases the cost of modifying production line equipment.
[0004] Therefore, how to reduce manufacturing costs and manufacturing difficulty in the process of manufacturing gas generators has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0005] This application provides a gas generator to address the problem in the prior art of reducing manufacturing costs and manufacturing difficulty during the production of gas generators.
[0006] This application provides a gas generator, including: a diffuser, a housing, a ignition cartridge, an ignition assembly, a short-circuit clamp, and a grounding ring;
[0007] The outer shell and the diffuser assembly form a sealed space;
[0008] The ignition cartridge is placed in the sealed space and located at the center of the bottom side of the diffuser; the outer shell has a groove structure in the middle, and a through hole is provided in the middle of the groove structure; the groove structure is directly opposite to the ignition cartridge;
[0009] The short-circuit clamp is housed in the groove structure;
[0010] One end of the ignition assembly is connected to the ignition cartridge, and the other end of the ignition assembly is installed in the short-circuit clamp;
[0011] The grounding ring is fitted onto the outside of the short-circuit clamp and connected to the groove structure; the grounding ring is short-circuited to the short-circuit clamp so that the ignition assembly is short-circuited to the housing.
[0012] Optionally, the grounding ring includes an integrally formed main body, a support column, and a limiting arm;
[0013] The main body of the kit is fitted onto the outer periphery of the short-circuit clamp;
[0014] The limiting arm is disposed on the upper edge of the outer periphery of the main body of the suit and is disposed perpendicular to the outer periphery of the main body of the suit. The end of the limiting arm abuts against the peripheral wall of the groove structure.
[0015] The support column is located at the lower edge of the outer periphery of the main body of the kit and is distributed along the groove depth direction of the groove structure. The support column is in contact with the bottom wall of the groove structure.
[0016] Optionally, the grounding ring is welded to the groove structure.
[0017] Optionally, the short-circuit clamp includes a main body, an integrally formed short-circuit spring, and a spring sheet;
[0018] The short-circuit spring is located near the center of the main body, and the short-circuit spring can be connected to the two electrodes of the ignition assembly;
[0019] The spring sheet is disposed along the outer periphery of the main body;
[0020] The short-circuit spring short-circuits the two electrodes of the ignition assembly before vehicle installation; at the same time, the spring is connected to the grounding ring, and the two electrodes of the ignition assembly are short-circuited to the housing and the diffuser through the grounding ring, and the short circuit is canceled through the connector when the vehicle is installed.
[0021] Optionally, it also includes an injection molded body that injection molds the ignition assembly, the grounding ring, and the short-circuit clamp to fix the ignition assembly, the grounding ring, and the short-circuit clamp in the groove structure.
[0022] Optionally, a sealant is also included, which is disposed between the groove structure and the injection molded body to seal the groove structure and the injection molded body.
[0023] Optionally, the diffuser has vent holes of different diameters on its peripheral wall, and the vent holes are sealed by attaching a sealing foil to the inner wall of the diffuser.
[0024] Optionally, a filter is also included, which is disposed on the side of the diffuser and the peripheral wall of the housing.
[0025] Optionally, it also includes a buffer pad; the buffer pad is disposed at the bottom of the middle part of the ignition cartridge.
[0026] Optionally, it also includes an adjusting pad; the adjusting pad is disposed at the bottom of the periphery of the ignition cartridge.
[0027] Compared with the prior art, this application has the following advantages:
[0028] This application provides a gas generator, including: a diffuser, a housing, a ignition cartridge, an ignition assembly, a short-circuit clamp, and a grounding ring. The housing and diffuser are fitted together to form a sealed space. The ignition cartridge is placed in the sealed space and located at the center of the bottom side of the diffuser. The housing has a groove structure in its center, and a through hole in the center of the groove structure. The groove structure is directly opposite the ignition cartridge. The short-circuit clamp is housed in the groove structure. One end of the ignition assembly is connected to the ignition cartridge, and the other end of the ignition assembly is installed in the short-circuit clamp. The grounding ring is fitted onto the outside of the short-circuit clamp and connected to the groove structure. The grounding ring is short-circuited to the short-circuit clamp, thereby short-circuiting the ignition assembly to the housing.
[0029] This application describes a gas generator with a simple structure and low cost. Secondly, the short-circuit clamp is housed within a recessed structure. One end of the ignition assembly is connected to the ignition cartridge, and the other end is installed in the short-circuit clamp. A grounding ring is fitted onto the outside of the short-circuit clamp and connected to the recessed structure. The grounding ring is short-circuited to the short-circuit clamp, thus short-circuiting the ignition assembly to the outer casing. This gas generator requires no adjustment to the assembly process, no modification to the production line, and is easy to manufacture. Furthermore, the product quality remains stable, with low production safety risks, high product reliability, and ensures the safety of occupants. Attached Figure Description
[0030] Figure 1 This is a perspective view of a gas generator provided in an embodiment of this application.
[0031] Figure 2 This is a cross-sectional view of the gas generator provided in the embodiments of this application.
[0032] Figure 3This is a schematic diagram of the short-circuit clamp provided in the embodiment of this application.
[0033] Figure 4 This is a schematic diagram of the grounding ring provided in an embodiment of this application.
[0034] Figure 5 This is a schematic diagram of the structure of a gas generator provided in an embodiment of this application from one angle.
[0035] Figure label:
[0036] 1. Diffuser; 2. Outer shell; 3. Filter; 4. Gas-generating agent; 5. Auto-ignition agent; 6. Ignition cartridge; 7. Injection molded body; 8. Ignition assembly; 9. Short-circuit clamp; 91. Main body; 92. Short-circuit spring; 93. Spring sheet; 10. Grounding ring; 101. Set body; 102. Support column; 103. Limiting arm; 11. Sealant; 12. Ignition agent; 13. Buffer pad; 14. Ignition agent cover; 15. Desiccant; 16. Sealing foil; 17. Gas-generating agent cover; 18. Adjusting pad; 19. Exhaust hole; 20. Warning label. Detailed Implementation
[0037] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.
[0038] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0040] While most gas generators currently meet these two specific requirements by adding desiccant 15 (i.e., adding desiccant 15 inside the gas production chamber 4), the solution for short-circuiting the two electrodes of the igniter to the outer casing 2 is not ideal. Industry-standard gas generators typically use a CNC lathe to machine a metal igniter holder, then mount the igniter to it via a tapered connection (a sealing gasket or O-ring is needed between the igniter and the holder to improve sealing), weld the holder to the outer casing 2, and finally install an AKⅡ+ short-circuit clamp 9. The two electrodes and outer casing 2 are short-circuited via a spring on the clamp 9. Compared to traditional gas generators, this method is more costly, labor-intensive, and involves a longer production process and higher production line equipment modification costs.
[0041] Accordingly, this application provides a gas generator, comprising: a diffuser, a housing, a ignition cartridge, an ignition assembly, a short-circuit clamp, and a grounding ring. The housing and diffuser are fitted together to form a sealed space. The ignition cartridge is placed within the sealed space and located at the center of the bottom side of the diffuser. The housing has a groove structure in its center, and a through hole is provided in the center of the groove structure. The groove structure is directly opposite the ignition cartridge. The short-circuit clamp is accommodated in the groove structure. One end of the ignition assembly is connected to the ignition cartridge, and the other end of the ignition assembly is installed in the short-circuit clamp. The grounding ring is fitted onto the outside of the short-circuit clamp and connected to the groove structure. The grounding ring is short-circuited to the short-circuit clamp, thereby short-circuiting the ignition assembly to the housing.
[0042] This application describes a gas generator with a simple structure and low cost. Secondly, the short-circuit clamp is housed within a recessed structure. One end of the ignition assembly is connected to the ignition cartridge, and the other end is installed in the short-circuit clamp. A grounding ring is fitted onto the outside of the short-circuit clamp and connected to the recessed structure. The grounding ring is short-circuited to the short-circuit clamp, thus short-circuiting the ignition assembly to the outer casing. This gas generator requires no adjustment to the assembly process, no modification to the production line, and is easy to manufacture. Furthermore, the product quality remains stable, with low production safety risks, high product reliability, and ensures the safety of occupants.
[0043] Next, the wire harness switch provided in this application will be described in detail with reference to the accompanying drawings. Among them, Figure 1 This is a perspective view of a gas generator provided in an embodiment of this application. Figure 2 This is a cross-sectional view of the gas generator provided in the embodiments of this application. Figure 3 This is a schematic diagram of the short-circuit clamp provided in the embodiment of this application. Figure 4 This is a schematic diagram of the grounding ring provided in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of a gas generator provided in an embodiment of this application from one angle.
[0044] like Figures 1 to 5As shown, this application provides a gas generator, including: a diffuser 1, a housing 2, a ignition cartridge 6, an ignition assembly 8, a short-circuit clamp 9, and a grounding ring 10. The housing 2 and diffuser 1 are fitted together to form a sealed space. The ignition cartridge 6 is placed in the sealed space and located at the center of the bottom side of the diffuser 1. The housing 2 has a groove structure in its center, and a through hole in the center of the groove structure. The groove structure is directly opposite the ignition cartridge 6. The short-circuit clamp 9 is housed in the groove structure. One end of the ignition assembly 8 is connected to the ignition cartridge 6, and the other end of the ignition assembly 8 is installed in the short-circuit clamp 9. The grounding ring 10 is fitted onto the outside of the short-circuit clamp 9 and connected to the groove structure. The grounding ring 10 is short-circuited to the short-circuit clamp 9, thereby short-circuiting the ignition assembly 8 to the housing 2.
[0045] Specifically, in this embodiment, the diffuser 1 has a cylindrical concave structure and a side lug structure along its edge. The side lug structure is perpendicular to the peripheral wall of the diffuser 1. Mounting holes are provided on the side lug structure. In one example, the peripheral wall of the diffuser 1 has vent holes 19 of different diameters. These vent holes 19 are sealed by attaching a sealing foil 16 to the inner wall of the diffuser 1. When the gas generator operates, the high-temperature, high-pressure gas inside instantly breaks through the sealing foil 16 and is rapidly discharged through the vent holes 19. The vent holes 19 of different sizes function to adjust the internal pressure and exhaust speed of the gas generator at high, low, and normal temperatures. The diffuser 1 also has a flange, which functions to fix the gas generator and press the gas bag opening to prevent leakage.
[0046] The outer casing 2 has an overall cylindrical concave structure, and the outer casing 2 and the diffuser 1 are fitted together to form a sealed space. In one example, the opening of the outer casing 2 faces the diffuser 1, the outer casing 2 is fitted onto the opening of the diffuser 1, and the outer side of the peripheral wall of the outer casing 2 is in contact with the inner side of the peripheral wall of the diffuser 1. In one example, the outer casing 2 has a groove structure in the middle, and a through hole is provided in the middle of the groove structure. Specifically, in one example, the groove structure is located in the middle of the bottom wall of the outer casing 2, and the groove opening is opposite to the opening of the outer casing 2. In an assembly relationship, such as... Figure 1 As shown, the opening of the diffuser 1 is set upward, the opening of the outer shell 2 is set downward, and the groove of the groove structure is set upward.
[0047] The short-circuit clip 9 is housed in a recessed structure. Specifically, in one example, the short-circuit clip 9 is an AKⅡ+ type short-circuit clip 9. The short-circuit clip 9 includes a main body 91, an integrally formed short-circuit spring 92, and a spring sheet 93. The main body 91 has a columnar structure, with two receiving connection holes at its center. These receiving connection holes are used to accommodate the two electrodes of the ignition assembly 8. The peripheral wall of the main body 91 has positioning supports. The short-circuit spring 92 is positioned near the center of the main body 91 and can connect to the two electrodes of the ignition assembly 8. In one example, two short-circuit springs 92 are used, with each short-circuit spring 92 opposite to each receiving connection hole, allowing the short-circuit spring 92 to connect to the electrode housed in the receiving connection hole. The spring sheet 93 is positioned along the outer periphery of the main body 91. In one example, four spring sheets 93 are used, and the four spring sheets 93 are evenly spaced along the outer periphery of the main body 91. Before installation, the short-circuit spring 92 short-circuits the two electrodes of the ignition assembly 8. At the same time, the spring 93 is connected to the grounding ring 10 (described below). The grounding ring 10 enables the two electrodes of the ignition assembly 8 to be short-circuited with the housing 2 and the diffuser 1. The short circuit is then canceled by the connector during installation.
[0048] A grounding ring 10 is fitted onto the outside of the short-circuit clamp 9 and connected to the groove structure. The grounding ring 10 is short-circuited to the short-circuit clamp 9, thereby short-circuiting the ignition assembly 8 and the housing 2. Specifically, in this embodiment, the grounding ring 10 includes an integrally formed fitting body 101, a support post 102, and a limiting arm 103. The fitting body 101 is fitted onto the outer periphery of the short-circuit clamp 9. In one example, based on the shape of the short-circuit clamp 9, the fitting body 101 is configured as a ring. The limiting arm 103 is disposed on the upper edge of the outer periphery of the fitting body 101 and is disposed perpendicular to the outer periphery of the fitting body 101. The end of the limiting arm 103 abuts against the peripheral wall of the groove structure. In one example, four limiting arms 103 are provided and are evenly distributed around the fitting body 101. Of course, in other examples, three limiting arms 103 may be provided. In one example, the end of the limiting arm 103 is curved to ensure stable contact with the groove structure. Support posts 102 are disposed along the lower edge of the outer periphery of the main body 101 of the assembly and distributed along the depth direction of the groove structure. The support posts 102 are in contact with the bottom wall of the groove structure. In one example, four support posts 102 are provided and are evenly distributed around the main body 101 of the assembly. Of course, in other examples, three support posts 102 may be provided.
[0049] In this embodiment, the grounding ring 10 is welded to the groove structure to improve the stability of the connection between the grounding ring 10 and the groove structure.
[0050] In this embodiment, an injection molded body 7 is also included. This body molds the ignition assembly 8, grounding ring 10, and short-circuit clamp 9 to fix them within the recessed structure. In one example, the injection molded body 7 may also mold a portion of the ignition assembly 8 located outside the recessed structure. The injection molded body 7 molds the ignition assembly 8 and grounding ring 10 as a single unit, which, after being welded together with the diffuser 1, forms a sealed body. In one example, the injection molded body 7 is an engineering plastic that uses injection molding to fix the outer shell 2 and the ignition assembly 8 into a single unit, forming a shape and size as required, thus serving to fix the ignition cartridge 6 and the short-circuit clamp 9.
[0051] In one example, to improve the airtightness of the connection between the outer side of the groove structure and the injection body 7, a sealant 11 is also provided. The sealant 11 is provided at the connection between the outer side of the groove structure and the injection body 7 to improve the sealing effect between the outer shell 2 and the injection body 7.
[0052] In this embodiment, the ignition cartridge 6 is placed in a sealed space and located at the center of the bottom side of the diffuser 1. The ignition cartridge 6 is used to hold the ignition charge 12 and has a certain number of small holes to transfer the energy generated by the combustion of the ignition charge 12 to the gas-generating charge 4, so that the gas-generating charge 4 is quickly ignited. In one example, a buffer pad 13 is also included; the buffer pad 13 is located at the bottom of the middle part of the ignition cartridge 6. In one example, a ignition charge cover 14 is also included, which is located between the buffer pad 13 and the ignition cartridge 6. In one example, an adjusting pad 18 is also included; the adjusting pad 18 is located at the bottom of the periphery of the ignition cartridge 6. Both the buffer pad 13 and the adjusting pad 18 are used to fill the excess space in the ignition cartridge 6 and the filter 3 and to compress the agent, preventing the agent from making abnormal noises when vibrating.
[0053] In this embodiment, a filter 3 is also included, which is disposed on the side closest to the peripheral wall of the diffuser 1 and the outer casing 2. The function of the filter 3 is to filter solid residues in the gas produced by the combustion of the reagent and to cool the gas.
[0054] Between the filter 3 and the ignition cartridge 6, a gas-generating agent 4 is also provided. The function of the gas-generating agent 4 is to produce a large amount of gas upon combustion. In one example, a gas-generating agent cover 17 is also included. The gas-generating agent cover 17 is disposed between the ignition cartridge cover 14, the adjusting pad 18 and the filter 3. The ignition cartridge cover 14 and the gas-generating agent cover 17 serve to compress the agent and prevent cross-ignition.
[0055] In this embodiment, the natural medicine is placed close to the top of the outer shell 2. The function of the self-igniting medicine 5 is to spontaneously ignite when the temperature is higher than 130°C, igniting the gas-generating medicine 4, the ignition-promoting medicine 12, and even the ignition component 8, so as to avoid the shell from cracking due to the reduced strength of the metal shell and the accelerated burning rate of the medicine at high temperature, which could injure people or objects.
[0056] In this embodiment, a desiccant 15 is also included. The desiccant 15 is disposed between the adjusting pad 18 and the gas-generating drug 4. The desiccant 15 absorbs excess moisture in the drug and moisture that seeps in from outside the gas generator, keeping the drug in a dry state for a long time.
[0057] In this embodiment, a warning label 20 is also included. The warning label 20 is disposed on the outside of the housing 2 and serves to inform and remind the user.
[0058] This application provides a gas generator, including: a diffuser 1, a housing 2, a ignition cartridge 6, an ignition assembly 8, a short-circuit clamp 9, and a grounding ring 10. The housing 2 and diffuser 1 are fitted together to form a sealed space. The ignition cartridge 6 is placed in the sealed space and located at the center of the bottom side of the diffuser 1. The housing 2 has a groove structure in its center, and a through hole in the center of the groove structure. The groove structure is directly opposite the ignition cartridge 6. The short-circuit clamp 9 is housed in the groove structure. One end of the ignition assembly 8 is connected to the ignition cartridge 6, and the other end of the ignition assembly 8 is installed in the short-circuit clamp 9. The grounding ring 10 is fitted onto the outside of the short-circuit clamp 9 and connected to the groove structure. The grounding ring 10 is short-circuited to the short-circuit clamp 9, thereby short-circuiting the ignition assembly 8 to the housing 2.
[0059] This application provides a gas generator with a simple structure and low cost. Secondly, the short-circuit clamp 9 is housed within the recessed structure. One end of the ignition assembly 8 is connected to the ignition cartridge 6, and the other end is installed in the short-circuit clamp 9. A grounding ring 10 is fitted onto the outside of the short-circuit clamp 9 and connected to the recessed structure. The grounding ring 10 is short-circuited to the short-circuit clamp 9, thus short-circuiting the ignition assembly 8 to the outer casing 2. This gas generator requires no adjustment to the assembly process, no modification to the production line, and is easy to manufacture. Furthermore, the product quality remains stable, with low production safety risks, high product reliability, and ensures the safety of occupants.
[0060] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.
[0061] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.
[0062] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.
Claims
1. A gas generator, characterized in that, include: Diffuser, outer casing, ignition cartridge, ignition assembly, short-circuit clamp, and grounding ring; The outer shell and the diffuser assembly form a sealed space; The ignition cartridge is placed in the sealed space and located at the center of the bottom side of the diffuser; the outer shell has a groove structure in the middle, and a through hole is provided in the middle of the groove structure; the groove structure is directly opposite to the ignition cartridge; The short-circuit clamp is housed in the groove structure; One end of the ignition assembly is connected to the ignition cartridge, and the other end of the ignition assembly is installed in the short-circuit clamp; The grounding ring is fitted onto the outside of the short-circuit clamp and connected to the groove structure; the grounding ring is short-circuited to the short-circuit clamp so that the ignition assembly is short-circuited to the housing.
2. The gas generator according to claim 1, characterized in that, The grounding ring includes an integrally molded main body, a support column, and a limiting arm; The main body of the kit is fitted onto the outer periphery of the short-circuit clamp; The limiting arm is disposed on the upper edge of the outer periphery of the main body of the suit and is disposed perpendicular to the outer periphery of the main body of the suit. The end of the limiting arm abuts against the peripheral wall of the groove structure. The support column is located at the lower edge of the outer periphery of the main body of the kit and is distributed along the groove depth direction of the groove structure. The support column is in contact with the bottom wall of the groove structure.
3. The gas generator according to claim 1, characterized in that, The grounding ring is welded to the groove structure.
4. The gas generator according to claim 1, characterized in that, The short-circuit clamp includes a main body, an integrally formed short-circuit spring, and a spring sheet; The short-circuit spring is located near the center of the main body, and the short-circuit spring can be connected to the two electrodes of the ignition assembly; The spring sheet is disposed along the outer periphery of the main body; The short-circuit spring short-circuits the two electrodes of the ignition assembly before vehicle installation; at the same time, the spring is connected to the grounding ring, and the two electrodes of the ignition assembly are short-circuited to the housing and the diffuser through the grounding ring, and the short circuit is canceled through the connector when the vehicle is installed.
5. The gas generator according to claim 1, characterized in that, It also includes an injection molded body that injection molds the ignition assembly, the grounding ring, and the short-circuit clamp to fix the ignition assembly, the grounding ring, and the short-circuit clamp in the groove structure.
6. The gas generator according to claim 5, characterized in that, It also includes a sealant disposed between the groove structure and the injection molded body to seal the groove structure and the injection molded body.
7. The gas generator according to claim 1, characterized in that, The diffuser has vent holes of different diameters on its peripheral wall. The vent holes are sealed by attaching a sealing foil to the inner wall of the diffuser.
8. The gas generator according to claim 1, characterized in that, It also includes a filter disposed on the side of the diffuser and the peripheral wall of the housing.
9. The gas generator according to claim 1, characterized in that, It also includes a buffer pad; the buffer pad is disposed at the bottom of the middle part of the ignition cartridge.
10. The gas generator according to claim 1, characterized in that, It also includes an adjusting pad; the adjusting pad is disposed at the bottom of the periphery of the ignition cartridge.