Gas generator, seat and vehicle

Abstract

The embodiment of the utility model provides a gas generator, a seat and a vehicle, the gas generator comprises a shell and a screen piece, the shell is internally provided with a containing cavity, the containing cavity is used for containing a gas generating agent, the shell is provided with a gas outlet, and the gas outlet communicates with the containing cavity; the screen piece is arranged in the shell, a sunken part is arranged on the side, close to the gas generating agent, of the screen piece, gas generated by the gas generating agent can penetrate through the screen piece through the sunken part and flow out of the gas outlet, and the sunken part on the screen piece can be used for conducting gas gathering and flow guiding on the gas flowing through the screen piece. Therefore, the gas production efficiency of the gas generator can be improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle safety technology, and specifically, the present application relates to a gas generator, a seat and a vehicle. Background Art

[0002] With the rapid development of science and technology, gas generators have been widely used in various fields. For example, in the fields of vehicle safety, industrial manufacturing, medical equipment and fire protection, gas generators are highly favored due to their high efficiency, safety and reliability.

[0003] At present, most gas generators on the market use a specific gas generating agent as the core raw material for gas generation. The gas generating agent undergoes a chemical reaction under the action of the ignition element, thereby generating a large amount of gas. However, for most existing gas generators, their gas production efficiency is not ideal. Utility Model Content

[0004] An object of embodiments of the present application is to provide a new solution for a gas generator, a seat, and a vehicle.

[0005] According to a first aspect of an embodiment of the present application, a gas generator is provided, comprising:

[0006] A shell, wherein the shell has a containing cavity, the containing cavity is used to place the gas generating agent, and the shell has a gas outlet, the gas outlet is communicated with the containing cavity;

[0007] A sieve is arranged in the shell, and a side of the sieve close to the gas generating agent has a recessed portion, and the gas generated by the gas generating agent can pass through the recessed portion, through the sieve and out of the gas outlet.

[0008] Optionally, a recessed direction of the recessed portion is consistent with a flow direction of the gas generated by the gas generating agent.

[0009] Optionally, the screen is in a cylindrical structure, and the axis of the cylindrical structure is aligned with the axis of the shell.

[0010] Optionally, the screen comprises a first part and a second part which are connected, the first part forms the recessed portion, the second part has a first air outlet, and the first air outlet is communicated with the accommodating cavity.

[0011] Optionally, the second part has a plurality of the first air outlet holes, and the plurality of the first air outlet holes are symmetrically distributed along the axis of the screen.

[0012] Optionally, a diameter of the first portion is greater than a diameter of the second portion.

[0013] Optionally, it further includes a first ignition component, which is disposed in the shell and communicates with the accommodating cavity.

[0014] Optionally, a first seal is further included, wherein the first seal is sandwiched between the second part and the inner wall of the shell.

[0015] Optionally, a filter is further included, wherein the filter is disposed in the housing, the filter is located on a side of the screen away from the gas generating agent, and the filter and the screen form a sealing groove for accommodating the first sealing member.

[0016] Optionally, a second sealing member is further included, and the second sealing member is attached to a side of the sieve away from the gas generating agent to seal the first gas outlet.

[0017] Optionally, it also includes a second ignition component, which is arranged in the shell, the second ignition component is located between the gas generating agent and the screen, the second ignition component is filled with a second ignition powder, and the second ignition powder is used to ignite the gas generating agent.

[0018] Optionally, the second ignition member has a second air outlet.

[0019] Optionally, the second ignition member is in a trumpet-shaped structure or a hollow cylindrical structure.

[0020] Optionally, a partition net is further included, wherein the partition net is arranged in the shell, the partition net is located between the first ignition component and the gas generating agent, and the partition net is filled with a first ignition powder.

[0021] Optionally, a blocking piece is further included, and the blocking piece is arranged on a side of the first ignition powder close to the first ignition member.

[0022] Optionally, a spring is further included, wherein the spring is clamped between the blocking piece and the first ignition member.

[0023] Optionally, the other end of the shell is sealed by a seamless steel pipe hot-spin sealing process.

[0024] According to a second aspect of an embodiment of the present application, a seat is provided, comprising a seat body and the gas generator described in the first aspect, wherein the gas generator is connected to the seat body.

[0025] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising the gas generator according to the first aspect, or the seat according to the second aspect.

[0026] A technical effect of this application is:

[0027] An embodiment of the present application provides a gas generator, including a shell, a first ignition part and a screen, wherein the shell has a accommodating cavity, the accommodating cavity is used to place a gas generating agent, the shell has a gas outlet, and the gas outlet is connected to the accommodating cavity; the screen is arranged in the shell, and the screen has a recessed portion on a side close to the gas generating agent, and the gas generated by the gas generating agent can pass through the screen through the recessed portion and flow out from the gas outlet, so that the recessed portion on the screen can be used to gather and guide the gas flowing through, thereby improving the gas production efficiency of the gas generator.

[0028] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0030] Figure 1 A schematic diagram of a gas generator provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of another gas generator provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a screen provided in an embodiment of the present application;

[0033] Figure 4 Another schematic diagram of a screen provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of a second ignition element provided in an embodiment of the present application;

[0035] Figure 6 Another schematic diagram of a second ignition element provided in an embodiment of the present application;

[0036] Figure 7 A schematic diagram of another second ignition element provided in an embodiment of the present application;

[0037] Figure 8 Another schematic diagram of another second ignition element provided in an embodiment of the present application;

[0038] Fig. 9 A schematic diagram of a partition provided in an embodiment of the present application;

[0039] Fig.10 Another schematic diagram of a partition provided in an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1. Shell; 11. Accommodating chamber; 12. Air outlet; 2. Gas generating agent; 3. First ignition element; 4. Screen; 41. Recessed portion; 42. First air outlet; 43. Mounting flange; 5. First sealing element; 6. Second sealing element; 7. Second ignition element; 71. Second air outlet; 8. Screen; 81. First ignition powder; 9. Blocking plate; 10. Spring; 13. Filter; 14. Third sealing element; 15. Short-circuit protection element. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0043] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0045] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0046] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "height", "thickness", "up", "down", "front", "middle", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] An embodiment of the present application provides a gas generator, which is commonly used in an airbag system of a vehicle. The gas generator can be activated and discharge gas when the vehicle is hit, thereby ensuring the safety of the vehicle.

[0049] Reference Figure 1 and Figure 2 , the gas generator comprises:

[0050] A housing 1, wherein the housing 1 has a housing chamber 11, wherein the housing chamber 11 is used to place a gas generating agent 2, and wherein the housing 1 has a gas outlet 12, wherein the gas outlet 12 is communicated with the housing chamber 11;

[0051] The sieve plate 4 is disposed in the housing 1 , and has a recessed portion 41 on one side of the sieve plate 4 close to the gas generating agent 2 . The gas generated by the gas generating agent 2 can pass through the recessed portion 41 , through the sieve plate 4 , and out of the gas outlet 12 .

[0052] like Figure 1 and Figure 2 As shown, the housing 1 has a receiving chamber 11 for placing a gas generating agent 2. The gas generating agent 2 can be ignited at a certain temperature and generate gas, and the gas generated by the gas generating agent 2 can flow out through the gas outlet 12 and realize the exhaust function, that is, the gas generating function.

[0053] Specifically, the first ignition element 3 and the screen 4 can be arranged inside the housing 1 to fully utilize the internal space of the housing 1, thereby reducing the overall volume of the gas generator and making it suitable for occasions with limited space. This design not only facilitates the installation and layout of the gas generator, but also reduces the production and use costs.

[0054] When the first ignition element 3 is working, the first ignition element 3 can ignite the first ignition powder 81, and the heat generated by the first ignition powder 81 can ignite the gas generating agent 2 and make the gas generating agent 2 generate gas. Among them, the gas generator of the embodiment of the utility model adopts a design that the first ignition element 3 is connected to the accommodating cavity 11 of the shell 1, which can ensure that the gas generating agent 2 is ignited quickly and stably and generates a large amount of gas. Among them, when the gas generator is applied to a vehicle, the working state of the first ignition element 3 can be controlled by the ECU (Electronic Control Unit), thereby controlling the ignition process of the gas generating agent 2, and also reducing the risk of accidental ignition.

[0055] like Figure 1 and Figure 2 As shown, the embodiment of the utility model is provided with a recessed portion 41 on the side of the screen 4 close to the gas generating agent 2, that is, the screen 4 is partially recessed on the side facing the gas generating agent 2. On the one hand, the setting of the recessed portion 41 can effectively guide the gas to flow out of the accommodating cavity 11 and be discharged smoothly through the gas outlet 12, thereby ensuring the high efficiency and stability of gas generation, and also improving the gas production efficiency of the gas generator. Among them, the depth and area of ​​the recessed portion 41 can be adjusted according to the actual gas production demand, so as to adjust its gas guiding and drainage capacity accordingly.

[0056] Moreover, the presence of the recessed portion 41 also enables the screen plate 4 to be more balanced when bearing the gas pressure, thereby reducing the risk of deformation or damage of the screen plate 4 due to excessive local pressure.

[0057] On the other hand, the screen 4 itself also has good filtering ability. The screen 4 can prevent fragments or other impurities of the gas generating agent 2 from entering the gas outlet 12, thereby ensuring the purity of the gas flowing out of the gas outlet 12, reducing the potential damage to the equipment using the gas generator, and extending the service life of the gas generator.

[0058] In addition, the design of the shell 1 not only facilitates the arrangement of the gas outlet 12 to facilitate gas outflow, but the shell 1 can also improve the structural strength of the gas generator, avoid safety hazards such as explosion caused by excessive internal pressure of the gas generator, and improve the safety of the gas generator.

[0059] Optionally, the recessed direction of the recessed portion 41 is consistent with the flow direction of the gas generated by the gas generating agent 2 .

[0060] like Figure 1 and Figure 2 As shown, by setting the recessed direction of the recessed portion 41 to be consistent with the flow direction of the gas, it can ensure that the gas generated by the gas generating agent 2 can pass through the screen 4 more smoothly and flow to the gas outlet 12, thereby reducing the resistance during the gas flow process and increasing the flow rate and flow of the gas, thereby ensuring the gas production efficiency of the gas generator.

[0061] Furthermore, since the recessed portion 41 faces the gas generating agent 2, it can filter the gas as it flows toward the gas outlet 12, preventing these impurities from entering the gas flow, thereby helping to improve the purity of the outflowing gas and reduce potential damage to the equipment using the gas generator.

[0062] Optionally, the screen plate 4 is in a cylindrical structure, and the axis of the cylindrical structure is aligned with the axis of the shell 1 .

[0063] like Figure 3 and Figure 4 As shown, the screen plate 4 can be a cylindrical structure, and the chamber inside it is annular. The axis of the cylindrical structure is aligned with the axis of the housing 1, which can facilitate the assembly of the two, thereby improving the assembly efficiency of the gas generator.

[0064] In another embodiment, the cylindrical screen 4 can be arranged to be aligned with the axis of the first ignition element 3, so that after the first ignition element 3 ignites the gas generating agent 2, the gas generated by the gas generating agent 2 can directly and quickly enter the screen 4, reducing the turning and resistance of the gas during the flow process, thereby improving the flow efficiency of the gas. Moreover, the axis alignment design also enhances the structural symmetry of the entire gas generator, which is not only conducive to the uniform distribution and flow of the gas, but also improves the structural stability and reliability of the entire gas generator.

[0065] In addition, the axes of the screen plate 4 and the first ignition member 3 are aligned, which makes it easier to ensure the concentricity of the two during the assembly process, simplifies the assembly steps, improves the assembly efficiency, and also reduces the possibility of assembly errors.

[0066] Optionally, the sieve plate 4 includes a first part and a second part which are connected, the first part forms the recessed portion 41 , the second part has a first air outlet 42 , and the first air outlet 42 is in communication with the accommodating cavity 11 .

[0067] like Figure 3 and Figure 4 As shown, the screen 4 is designed to include a first part and a second part, and the concave portion 41 formed in the first part can be used to guide the flow direction of the gas generated by the gas generating agent 2. The design of the concave portion 41 not only increases the contact area between the gas and the screen 4, but also guides the gas to a certain extent during the flow process, thereby ensuring that the gas can smoothly enter and pass through the screen 4.

[0068] The second part can be provided with a first air outlet 42, which serves as the main channel for gas outflow, and its design ensures that the gas can evenly flow out of the accommodating cavity 11. Since the first air outlet 42 is directly connected to the accommodating cavity 11, the resistance of gas flow is reduced and the gas outlet efficiency is improved. Among them, the number and distribution of the first air outlet 42 can also be optimized according to actual needs to further improve the distribution uniformity and gas outlet efficiency of the gas.

[0069] According to actual design requirements, the first part and the second part can be designed as a split structure, which can facilitate processing and assembly during the manufacturing process, and also allows a certain part to be replaced or repaired separately during subsequent maintenance, reducing maintenance costs and difficulties. The first part and the second part can also be designed as an integrated structure to ensure the structural strength of the screen 4.

[0070] Optionally, the first portion further has a mounting flange 43 , the mounting flange 43 is located on a peripheral side of the recessed portion 41 , and the mounting flange 43 is used to be connected to the housing 1 .

[0071] like Figure 4As shown, the installation of the mounting flange 43 makes the connection between the screen plate 4 and the housing 1 simpler and more direct. By matching the mounting flange 43 with the corresponding structure or hole position on the housing 1, the screen plate 4 can be installed quickly and accurately, thereby improving the assembly efficiency.

[0072] Moreover, the mounting flange 43 can also provide better support and fixing effect, effectively preventing the screen 4 from loosening or displacement during use, and ensuring the stable operation of the gas generator. The design of the mounting flange 43 also makes the transition between the screen 4 and the housing 1 smoother, reduces unnecessary gaps and protrusions, optimizes the overall structure, helps to improve the appearance of the gas generator, and reduces potential risks caused by structural defects.

[0073] In addition, the mounting flange 43, as a part of the screen plate 4, can enhance the overall structural strength of the screen plate 4. The mounting flange 43 can provide additional support when the screen plate 4 is subjected to gas pressure or other external forces, prevent the screen plate 4 from being deformed or damaged, and extend the service life of the screen plate 4. The mounting flange 43 can be designed to be stamped and formed, which can facilitate the production of the screen plate 4.

[0074] Optionally, the mounting flange 43 is annular, and the mounting flange 43 is circumferentially fitted with the inner wall of the shell 1 .

[0075] like Figure 4 As shown, the annular mounting flange 43 can form a circumferential fit with the inner wall of the shell 1, thereby ensuring the tightness of the connection between the screen plate 4 and the shell 1, and can effectively prevent gas leakage from the gap between the screen plate 4 and the shell 1, thereby improving the sealing performance of the gas generator and ensuring that the gas can flow along a predetermined path.

[0076] Moreover, the annular mounting flange 43 also improves the structural stability of the entire gas generator, helps to resist external impact and vibration, prevents the screen 4 from shifting or loosening during use, and ensures the long-term stable operation of the gas generator. Moreover, the circumferential fitting design of the mounting flange 43 and the inner wall of the shell 1 fully utilizes the space in the shell 1, making the fit of the screen 4 and the shell 1 more compact, making it easier to control the overall size of the gas generator, making it more suitable for occasions with limited space.

[0077] Optionally, the second portion has a plurality of first air outlet holes 42 , and the plurality of first air outlet holes 42 are symmetrically distributed along the axis of the screen plate 4 .

[0078] like Figure 3 and Figure 4As shown, by providing a plurality of first air outlet holes 42 symmetrically distributed along the axis of the screen plate 4 on the second part, uniform gas outflow can be achieved, thereby avoiding the problem of local overheating or poor air flow. The provision of the plurality of first air outlet holes 42 also increases the heat dissipation area, thereby improving the overall heat dissipation performance.

[0079] The symmetrical distribution of the plurality of first air outlet holes 42 also makes the airflow control more precise and flexible. According to actual application requirements, the airflow effect can be optimized by adjusting the size, number and distribution of the first air outlet holes 42, so as to meet the use requirements in different scenarios.

[0080] In addition, since the plurality of first air outlet holes 42 are symmetrical along the axis of the screen plate 4, the screen plate 4 can evenly disperse the pressure when subjected to stress, thereby reducing the risk of damage caused by stress concentration, helping to extend the service life of the product and improve reliability.

[0081] Optionally, a diameter of the first portion is greater than a diameter of the second portion.

[0082] like Figure 3 and Figure 4 As shown, the diameter of the first part is set to be larger than that of the second part, that is, the first part is wider and the second part is narrower, which can facilitate the formation and connection of the mounting flange 43 on the first part, and also enable the screen 4 to better disperse the stress when subjected to force, thereby enhancing the stability of the entire gas generator. The mounting flange 43 on the first part or other connecting structures can be used to form a connection with the housing 1.

[0083] The concave portion 41 is located in the first part, and the larger diameter of the first part can help reduce the resistance of the gas when passing through, thereby improving the gas guiding effect of the concave portion 41 and the efficiency of gas flow. The first gas outlet 42 is located in the second part, and the smaller diameter of the second part can accurately control the flow rate or speed of the gas, thereby improving the gas production efficiency of the gas generator.

[0084] Additionally, in some applications, the small diameter of the second portion may make it easier to install the screen 4 through a narrow space, or facilitate maintenance operations.

[0085] Optionally, a first ignition component 3 is further included, wherein the first ignition component 3 is disposed in the housing 1 , and the first ignition component 3 is communicated with the accommodating cavity 11 .

[0086] Specifically, the first ignition element 3 and the screen 4 can be arranged inside the housing 1 to fully utilize the internal space of the housing 1, thereby reducing the overall volume of the gas generator and making it suitable for occasions with limited space. This design not only facilitates the installation and layout of the gas generator, but also reduces the production and use costs.

[0087] When the first ignition element 3 is working, the first ignition element 3 can ignite the first ignition powder 81, and the heat generated by the first ignition powder 81 can ignite the gas generating agent 2 and make the gas generating agent 2 generate gas. Among them, the gas generator of the embodiment of the utility model adopts a design that the first ignition element 3 is connected to the accommodating cavity 11 of the shell 1, which can ensure that the gas generating agent 2 is ignited quickly and stably and generates a large amount of gas. Among them, when the gas generator is applied to a vehicle, the working state of the first ignition element 3 can be controlled by the ECU (Electronic Control Unit), thereby controlling the ignition process of the gas generating agent 2, and also reducing the risk of accidental ignition.

[0088] Optionally, a first sealing member 5 is further included, wherein the first sealing member 5 is sandwiched between the second portion and the inner wall of the housing 1 .

[0089] like Figure 1 and Figure 2 As shown, by sandwiching the first sealing member 5 between the second part and the inner wall of the shell 1, the gas can be effectively prevented from flowing out of this joint, the sealing performance between the cylindrical structure and the shell 1 can be improved, and the gas production reliability and efficiency of the gas generator are ensured.

[0090] Furthermore, the first seal 5 can also enhance the connection stability between the second part and the inner wall of the housing 1 to a certain extent. The first seal 5 can fill the small gap between the two and reduce the looseness caused by vibration or impact, thereby enhancing the structural stability of the gas generator.

[0091] Optionally, a filter 13 is further included. The filter 13 is disposed in the housing 1 . The filter 13 is located on a side of the sieve plate 4 away from the gas generating agent 2 . The filter 13 and the sieve plate 4 form a sealing groove for accommodating the first sealing member 5 .

[0092] like Figure 1 and Figure 2 As shown, by arranging a filter 13 on the side of the screen 4 away from the gas generating agent 2 and covering the gas outlet 12, impurities, particulate matter or other pollutants in the gas can be effectively filtered out, thereby significantly improving the purity and quality of the gas discharged from the gas outlet 12, ensuring that the gas output by the device during operation meets the relevant standards and requirements. In addition, the sealing groove formed between the filter 13 and the screen 4 can also facilitate the arrangement and installation of the first sealing member 5, thereby improving the space utilization of the gas generator.

[0093] The presence of the filter 13 can prevent impurities or particulate matter from entering the downstream equipment, thereby avoiding potential damage to the equipment, which helps to extend the service life of the downstream equipment and reduce failures and maintenance costs caused by impurities.

[0094] Optionally, a second sealing member 6 is further included, and the second sealing member 6 is attached to a side of the sieve plate 4 away from the gas generating agent 2 to seal the first gas outlet 42 .

[0095] like Figure 1 and Figure 2 As shown, a second sealing member 6 can be provided on the side of the screen 4 away from the first ignition member 3, and the second sealing member 6 can seal and maintain the screen 4, and the gas generated by the gas generating agent 2 can break through the second sealing member 6 and flow out from the gas outlet 12, thereby enhancing the structural reliability of the gas generator. The second sealing member 6 can be aluminum foil, aluminum sheet, etc.

[0096] In addition, the second seal 6 can also effectively prevent gas leakage from the gap between the screen plate 4 and adjacent components, and can also prevent impurities or particulate matter from entering the interior of the gas generator through the gap between the screen plate 4 and adjacent components, thereby protecting the screen plate 4 and the first ignition component 3 from damage by these impurities.

[0097] Optionally, a second ignition component 7 is further included, wherein the second ignition component 7 is disposed in the shell 1 , and the second ignition component 7 is located between the gas generating agent 2 and the screen 4 . The second ignition component 7 is filled with a second ignition powder, and the second ignition powder is used to ignite the gas generating agent 2 .

[0098] like Figure 1 and Figure 2 As shown, the second ignition element 7 can be arranged between the gas generating agent 2 and the screen 4. Specifically, by filling the second ignition powder in the second ignition element 7, when the temperature in the accommodating cavity 11 reaches the ignition point of the second ignition powder, the second ignition powder can be quickly ignited and release high-temperature energy. These high-temperature energies can quickly ignite the gas generating agent 2, shortening the time from ignition to the start of the reaction of the gas generating agent 2, and improving the efficiency of the entire ignition process. It can also reduce the impact of heat on the housing 1 while producing gas, prolonging the service life of the gas generator, and can also use the cooperation of the second ignition element 7 and the first ignition element 3 to adapt to different gas production requirements.

[0099] Furthermore, the provision of the second ignition element 7 also makes the temperature and pressure distribution in the ignition area more uniform, thereby enhancing the stability of the combustion, helping to reduce fluctuations and instabilities in the combustion process, and improving the operational stability of the gas generator.

[0100] In addition, the second ignition element 7 is an independent component, and its design and installation are relatively independent, which helps to simplify the design and maintenance process of the entire gas generator. Moreover, the second ignition element 7 can be replaced or repaired separately, which also reduces the maintenance cost of the gas generator.

[0101] Among them, the design of the second ignition powder makes the ignition process more stable and reliable. Since the second ignition powder can quickly generate enough heat to ignite the gas generating agent 2 when burning, a high ignition success rate can be guaranteed even under adverse environmental conditions (such as low temperature, high humidity, etc.). Moreover, the presence of the second ignition powder also enables the energy released during the ignition process to be directly transferred to the gas generating agent 2, thereby improving the energy utilization rate.

[0102] In addition, an integrated design of the ignition and gas generation process can be realized by filling the second ignition component 7 with the second ignition powder. The second ignition component 7 can work in conjunction with the first ignition component 3. For example, the heat generated during the combustion of the second ignition powder in the second ignition component 7 can be used to ignite the gas generating agent 2, thereby shortening the time for the gas generating agent 2 to generate gas, reducing energy consumption, and expanding the application range of the gas generator.

[0103] Optionally, the second ignition member 7 has a second air outlet 71 .

[0104] like Figure 1 and Figure 2 As shown, the second ignition element 7 can be arranged between the gas generating agent 2 and the screen 4, and the second gas outlet 71 thereon can lead out the heat generated during the combustion of the second ignition powder, so as to facilitate the combustion of the gas generating agent 2 and generate gas, thereby realizing the gas generating function of the gas generator. Compared with the first ignition element 3, the second ignition element 7 is closer to the ignition area where the gas generating agent 2 is located, so that the gas generating agent 2 can burn and generate gas more quickly, which is convenient for meeting the different gas generating requirements of the gas generator.

[0105] Optionally, the second ignition member 7 is a trumpet-shaped structure or a hollow cylindrical structure.

[0106] like Figure 5 and Figure 6 As shown, the second ignition element 7 can be designed as a trumpet-shaped structure, and its expanded portion helps to diffuse and distribute heat, so that the heat can cover the ignition area more evenly. This helps to improve the combustion efficiency of the gas generating agent 2 and reduce the generation of unburned substances. Moreover, the trumpet-shaped structure can also increase the contact area between the heat and the gas generating agent 2, thereby accelerating the ignition and combustion process of the gas generating agent 2.

[0107] like Figure 7 and Figure 8As shown, the second ignition element 7 can also be designed as a hollow cylindrical structure, the inner space of which can form a good heat convection effect, which is conducive to the stable combustion and heat transfer of heat. This structure can ensure that the heat burns continuously and stably inside the second ignition element 7, improving the ignition effect.

[0108] In addition, the flared design of the trumpet-shaped structure and the internal channel of the hollow cylindrical structure can effectively guide the airflow so that heat can smoothly enter the ignition area, which helps to increase the oxygen supply in the ignition area and improve the speed and completeness of the combustion reaction.

[0109] The flared size of the trumpet-shaped structure or the size of the hollow cylindrical structure can be adjusted to meet the needs of different application scenarios. For example, in scenarios where a larger heat coverage area is required, a trumpet-shaped structure with a larger flared size can be selected; and in scenarios where a more compact design is required, a smaller hollow cylindrical structure can be selected.

[0110] Optionally, a partition net 8 is further included, wherein the partition net 8 is disposed in the housing 1 , the partition net 8 is located between the first ignition component 3 and the gas generating agent 2 , and the partition net 8 is filled with a first ignition powder 81 .

[0111] like Figure 1 and Figure 2 As shown, the partition 8 can separate the first ignition element 3 from the screen 4 to form an independent ignition area. Filling the first ignition powder 81 in the partition 8 can ensure that the first ignition powder 81 can burn quickly and stably when stimulated by the first ignition element 3, thereby improving the ignition efficiency and stability. This design makes the ignition process more controllable and reduces the malfunction or failure caused by improper ignition. Fig. 9 and Fig.10 As shown, the partition net 8 can be in a pot-shaped structure to facilitate the loading of the first ignition powder 81.

[0112] Among them, by filling the first ignition powder 81 through the partition net 8, the first ignition powder 81 can be evenly distributed in the ignition area, which helps to ensure that the first ignition powder 81 can be fully burned and improve the utilization rate of the first ignition powder 81. In addition, the design of the partition net 8 can also prevent the first ignition powder 81 from scattering or shifting during transportation or use, thereby ensuring the reliability and safety of the gas generator.

[0113] As an independent component, the partition 8 can be maintained and replaced separately. When the first ignition powder 81 is exhausted or needs to be replaced, it is only necessary to remove the partition 8 for replacement without disassembling the entire gas generator, which greatly simplifies the maintenance process and reduces maintenance costs. Among them, by adjusting the shape and size of the partition 8 and the type and amount of the first ignition powder 81, it can adapt to the needs of different application scenarios, thereby meeting the ignition needs in different industries and scenarios.

[0114] Moreover, the provision of the partition 8 can also effectively prevent the heat generated during the ignition process from directly impacting the screen 4 or other components, reducing damage or safety hazards caused by high temperature. In addition, the partition 8 can also play a certain heat insulation role, reducing the temperature of the gas generator during operation and improving the overall safety.

[0115] Optionally, a blocking piece 9 is further included, which is arranged on a side of the first ignition powder 81 close to the first ignition component 3 and connected to a side of the partition net 8 close to the first ignition component 3 .

[0116] like Figure 1 and Figure 2 As shown, the design of the baffle 9 can effectively prevent the first ignition powder 81 in the partition 8 from accidentally scattering during transportation, installation or use. By providing the baffle 9, it can be ensured that the first ignition powder 81 is always kept in the partition, thereby improving the safety and reliability of the gas generator.

[0117] Furthermore, by providing the baffle 9, the heat generated by the first ignition element 3 can be directed to act more concentratedly on the first ignition powder 81 in the partition 8. This helps the first ignition powder 81 to burn more quickly and stably, thereby improving the ignition efficiency. Moreover, the baffle 9 can also prevent the flame from directly impacting the first ignition element 3, thereby protecting the first ignition element 3 from damage.

[0118] Among them, the baffle 9 can be made of high temperature resistant and corrosion resistant materials, which can resist the high temperature and corrosive gases generated during the ignition process, help to extend the service life of the gas generator, and reduce damage caused by high temperature or corrosion.

[0119] Optionally, a spring 10 is further included, and the spring 10 is sandwiched between the blocking piece 9 and the first ignition component 3 .

[0120] like Figure 1 and Figure 2As shown, the arrangement of the spring 10 can play a certain buffering role between the first ignition member 3 and the baffle 9. During the ignition process, the impact force or vibration generated by the first ignition member 3 may be transmitted to the partition 8 and the first ignition powder 81 through the baffle 9, thereby affecting the ignition effect. The spring 10 can effectively absorb and disperse these impact forces or vibrations, making the ignition process more stable and improving the stability and reliability of the ignition.

[0121] Furthermore, the setting of the spring 10 can also maintain the working distance between the baffle 9 and the first ignition element 3. This ensures that the heat generated by the first ignition element 3 can stably act on the baffle 9 and the first ignition powder 81 in the partition 8, avoiding poor ignition effect or failure due to distance changes.

[0122] Optionally, the other end of the shell 1 is sealed by a seamless steel pipe hot-spin sealing process.

[0123] Specifically, the first ignition element 3 is arranged at one end of the housing 1, and the other end of the housing 1 is sealed by a seamless steel tube hot spinning sealing process, which can ensure the tightness and sealing of the sealing part. This process can effectively prevent gas leakage from the sealing part, thereby improving the sealing performance of the entire gas generator. By sealing the other end of the housing by a seamless steel tube hot spinning sealing process, the sealing performance, structural strength and service life of the gas generator can also be significantly improved, thereby improving the overall performance of the gas generator.

[0124] In addition, the sealing connection formed by the hot spinning sealing process is firm and reliable, and is not prone to loosening or damage. This helps reduce gas generator failures and maintenance costs caused by sealing problems, thereby extending the service life of the gas generator. In addition, the seamless steel pipe hot spinning sealing process is relatively simple and efficient, and can achieve fast and accurate sealing operations, which helps reduce manufacturing costs and improve production efficiency.

[0125] like Figure 1 and Figure 2 As shown, a third sealing member 14 can be provided between the first ignition member 3 and the housing 1, and the third sealing member 14 can seal the gap between the first ignition member 3 and the housing 1 to strengthen the connection effect between the two. A short circuit protection member 15 can also be provided on the side of the first ignition member 3 away from the screen 4, and the short circuit protection member 15 is used to form a short circuit protection for the gas generator, and also improves the safety of the gas generator.

[0126] An embodiment of the present application further provides a seat, comprising a seat body and the above-mentioned gas generator, wherein the gas generator is connected to the seat body.

[0127] An embodiment of the present application further provides a vehicle, comprising the above-mentioned gas generator or the above-mentioned seat, wherein a cockpit is provided on the vehicle body, and the seat is provided in the cockpit.

[0128] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A gas generator, characterized in that: include: A shell (1), wherein the shell (1) has a containing chamber (11), the containing chamber (11) is used to place a gas generating agent (2), and the shell (1) has a gas outlet (12), the gas outlet (12) is communicated with the containing chamber (11); A sieve (4), the sieve (4) being arranged in the housing (1), and having a recessed portion (41) on a side of the sieve (4) close to the gas generating agent (2), so that the gas generated by the gas generating agent (2) can pass through the sieve (4) through the recessed portion (41) and flow out from the gas outlet (12).

2. The gas generator according to claim 1, characterized in that The concave direction of the concave portion (41) is consistent with the flow direction of the gas generated by the gas generating agent (2).

3. The gas generator according to claim 1, characterized in that The screen plate (4) is in a cylindrical structure, and the axis of the cylindrical structure is aligned with the axis of the shell (1).

4. The gas generator according to claim 1, characterized in that The sieve plate (4) comprises a first part and a second part which are connected, the first part forming the recessed portion (41), the second part having a first air outlet (42), and the first air outlet (42) being in communication with the accommodating cavity (11).

5. The gas generator according to claim 4, characterized in that The second part is provided with a plurality of the first air outlet holes (42), and the plurality of the first air outlet holes (42) are symmetrically distributed along the axis of the screen plate (4).

6. The gas generator according to claim 4, characterized in that The diameter of the first portion is greater than the diameter of the second portion.

7. The gas generator according to claim 1, characterized in that It also comprises a first ignition component (3), wherein the first ignition component (3) is arranged in the housing (1), and the first ignition component (3) is connected to the accommodating cavity (11).

8. The gas generator according to claim 6, characterized in that It also comprises a first sealing member (5), wherein the first sealing member (5) is sandwiched between the second portion and the inner wall of the housing (1).

9. The gas generator according to claim 8, characterized in that The invention also comprises a filter (13), wherein the filter (13) is arranged in the housing (1), and the filter (13) is located on a side of the sieve (4) away from the gas generating agent (2), and the filter (13) and the sieve (4) form a sealing groove for accommodating the first sealing member (5).

10. The gas generator according to claim 4, characterized in that It also includes a second sealing member (6), which is attached to a side of the screen (4) away from the gas generating agent (2) to seal the first gas outlet hole (42).

11. The gas generator according to claim 1, characterized in that The invention also comprises a second ignition component (7), wherein the second ignition component (7) is arranged in the shell (1), the second ignition component (7) is located between the gas generating agent (2) and the screen (4), and the second ignition component (7) is filled with a second ignition powder, and the second ignition powder is used to ignite the gas generating agent (2).

12. The gas generator according to claim 11, characterized in that The second ignition element (7) is provided with a second air outlet hole (71).

13. The gas generator according to claim 11, characterized in that The second ignition component (7) is in the form of a trumpet or a hollow cylinder.

14. The gas generator according to claim 7, characterized in that It also comprises a partition net (8), wherein the partition net (8) is arranged in the housing (1), the partition net (8) is located between the first ignition element (3) and the gas generating agent (2), and the partition net (8) is filled with a first ignition powder (81).

15. The gas generator according to claim 14, characterized in that It also comprises a blocking piece (9), wherein the blocking piece (9) is arranged on a side of the first ignition powder (81) close to the first ignition element (3).

16. The gas generator according to claim 15, characterized in that It also includes a spring (10), wherein the spring (10) is sandwiched between the blocking piece (9) and the first ignition component (3).

17. The gas generator according to claim 1, characterized in that The other end of the shell (1) is sealed by using a seamless steel pipe hot-spin sealing process.

18. A seat, characterized in that: The invention comprises a seat body and the gas generator according to any one of claims 1 to 17, wherein the gas generator is connected to the seat body.

19. A vehicle, characterized in that: Comprising the gas generator according to any one of claims 1 to 17, or the seat according to claim 18.

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