Gas generator

Abstract

The utility model relates to the technical field of automobile safety air bag, more particularly to a gas generator. The gas generator includes main body, upper cover, ignition chamber, injection molding body and igniter, the upper cover is covered in the main body, and the upper cover and the main body form the gas production cavity together, the main body is equipped with the first connecting portion, the ignition chamber is equipped with the second connecting portion, the injection molding body is connected with the first connecting portion and the second connecting portion, so as to connect the ignition chamber on the main body, and the ignition chamber is placed in the gas production cavity, wherein the igniter is covered by the injection molding body, and the pin end of the igniter extends out of the gas production cavity, and the ignition end of the igniter extends into the ignition chamber. The gas generator connects the ignition chamber, the igniter and the main body through the injection molding body, so that the ignition chamber and the igniter can be stably connected to the main body, thereby making the structure more firm and reliable, and also improving the sealing performance of the gas generator.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and more specifically, to a gas generator. Background Technology

[0002] In automotive airbag systems, the gas generator's function is to rapidly produce a large amount of gas in emergency situations such as vehicle collisions, causing the airbag to inflate quickly and thus protecting occupants. Current gas generators are commonly connected by welding; however, welding processes require highly skilled equipment and operators, and are prone to problems such as incomplete welds and missed welds, which can affect the gas generator's sealing performance and overall strength. Utility Model Content

[0003] The purpose of this utility model is to provide a gas generator that can connect the ignition chamber, igniter and main body through an injection molded body, thereby enabling the ignition chamber and igniter to be stably connected to the main body, making the structure more robust and reliable, and also improving the sealing performance of the gas generator.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] This utility model provides a gas generator, which includes a main body, a top cover, an ignition chamber, an injection molded body, and an igniter;

[0006] The top cover fits onto the main body and together they form a gas-generating chamber; the main body is equipped with a first connecting part.

[0007] The ignition chamber is equipped with a second connecting part, and the injection molded body is connected to the first connecting part and the second connecting part to connect the ignition chamber to the main body, and the ignition chamber is placed in the gas generation chamber;

[0008] The igniter is encased in an injection-molded body, with the pin end of the igniter extending out of the gas-generating chamber and the ignition end of the igniter extending into the ignition chamber.

[0009] In an optional embodiment, the first connecting part includes a mounting groove recessed towards the gas generation chamber, a portion of the injection molded body is accommodated in the mounting groove, and the groove body of the mounting groove is provided with a through hole and a plurality of limiting hole groups; the plurality of limiting hole groups are spaced apart around the axis of the through hole.

[0010] Among them, the through hole supplies the injection molded body and the igniter, and the limiting hole group supplies the injection molded body.

[0011] In an optional embodiment, the limiting hole group includes a plurality of first limiting holes and a plurality of second limiting holes. The plurality of first limiting holes and the plurality of second limiting holes are all spaced apart around the axis of the through hole, and the plurality of first limiting holes are arranged circumferentially at intervals on the outer periphery of the through hole, and the plurality of second limiting holes are arranged circumferentially at intervals on the outer periphery of the first limiting holes.

[0012] In an optional embodiment, the plurality of first limiting holes and the plurality of second limiting holes are all strip-shaped holes arranged along the tangential direction of the through hole.

[0013] In an optional embodiment, the plurality of first limiting holes and the plurality of second limiting holes are all arc-shaped holes arranged around the axis of the through hole.

[0014] In an optional embodiment, the limiting hole group includes a plurality of third limiting holes, which are all spaced apart around the axis of the through hole, and are arranged circumferentially on the outer periphery of the through hole.

[0015] The first connecting part also includes a plurality of fourth limiting holes, which are arranged circumferentially and spaced apart on the wall of the mounting groove around the axis of the mounting groove.

[0016] The injection molded body is covered outside the mounting groove, and the part of it covered outside the mounting groove is connected to the part located inside the mounting groove through the third limiting hole and the fourth limiting hole.

[0017] In an optional embodiment, the second connection includes a first mounting hole disposed on the side wall of the ignition chamber, and a portion of the injection-molded body is located inside the ignition chamber and connected to the first mounting hole.

[0018] In an optional embodiment, the first connecting portion includes a mounting groove recessed towards the gas generation chamber, and a portion of the injection molded body is accommodated in the mounting groove; the second connecting portion includes a bent portion disposed at one end of the ignition chamber facing the mounting groove, and a portion of the injection molded body is located inside the ignition chamber and covers the bent portion.

[0019] In an optional embodiment, the bent portion is spaced apart from the bottom of the mounting groove, and injection molded parts are distributed at the gap.

[0020] In an optional embodiment, the bent portion is provided with a plurality of second mounting holes, which are spaced apart around the axis of the ignition chamber, and the second mounting holes are for the injection molded body to pass through.

[0021] The beneficial effects of the gas generator provided in this embodiment of the present invention include:

[0022] The gas generator includes a main body, a top cover, an ignition chamber, an injection-molded body, and an igniter. The top cover fits onto the main body, forming a gas-generating chamber. The main body is equipped with a first connecting part. The ignition chamber is equipped with a second connecting part. The injection-molded body connects to both the first and second connecting parts to connect the ignition chamber to the main body, and the ignition chamber is placed within the gas-generating chamber. The igniter is encased in the injection-molded body, with its pin end extending out of the gas-generating chamber and its ignition end extending into the ignition chamber. This gas generator connects the ignition chamber, igniter, and main body via the injection-molded body, ensuring a stable connection between the ignition chamber and igniter to the main body. This results in a more robust and reliable structure and improves the gas generator's sealing performance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the gas generator provided in this embodiment;

[0025] Figure 2 This is a structural schematic diagram of the main body and ignition chamber provided in this embodiment;

[0026] Figure 3 This is a schematic diagram of the main body provided in this embodiment;

[0027] Figure 4 A schematic diagram from a first perspective of the structure of the limiting hole group provided in this embodiment, including the first limiting hole and the second limiting hole;

[0028] Figure 5 A schematic diagram from a second perspective of the structure of the limiting hole group provided in this embodiment, including the first limiting hole and the second limiting hole;

[0029] Figure 6 This is a schematic diagram of the structure when the first limiting hole and the second limiting hole are strip holes, as provided in this embodiment;

[0030] Figure 7 A schematic diagram from a first perspective showing the structure of the limiting hole group provided in this embodiment, which includes a third limiting hole and a fourth limiting hole;

[0031] Figure 8 A schematic diagram from a second perspective showing the structure of the limiting hole group provided in this embodiment, which includes a third limiting hole and a fourth limiting hole;

[0032] Figure 9This is a schematic diagram of the structure of the second connecting part in this embodiment when it includes the first mounting hole;

[0033] Figure 10 This is a structural diagram showing the second connecting portion including a bent portion in this embodiment;

[0034] Figure 11 This is a schematic diagram of the structure of the bent portion and the second mounting hole provided in this embodiment.

[0035] Icons: 100-Gas generator; 110-Main body; 120-Top cover; 130-Ignition chamber; 140-Injection molded body; 150-Igniter; 101-Gas generation chamber; 111-First connecting part; 131-Second connecting part; 112-Mounting groove; 113-Through hole; 114-Limiting hole group; 115-First limiting hole; 116-Second limiting hole; 117-Third limiting hole; 118-Fourth limiting hole; 132-First mounting hole; 133-Bending part; 134-Second mounting hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model 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 utility model.

[0040] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0041] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0042] Please refer to Figures 1-4 This embodiment provides a gas generator 100, which includes a main body 110, a top cover 120, an ignition chamber 130, an injection-molded body 140, and an igniter 150.

[0043] The upper cover 120 covers the main body 110 and together they form the gas-generating chamber 101. The main body 110 is equipped with a first connecting part 111.

[0044] The ignition chamber 130 is provided with a second connecting part 131. The injection molded body 140 is connected to the first connecting part 111 and the second connecting part 131 to connect the ignition chamber 130 to the main body 110, and the ignition chamber 130 is placed in the gas generation chamber 101.

[0045] The igniter 150 is covered by the injection-molded body 140, and the pin end of the igniter 150 extends out of the gas generation chamber 101, while the ignition end of the igniter 150 extends into the ignition chamber 130.

[0046] Please refer to Figures 1-4 The working principle of the gas generator 100 is as follows:

[0047] The gas generator 100 includes a main body 110, a top cover 120, an ignition chamber 130, an injection-molded body 140, and an igniter 150;

[0048] The upper cover 120 covers the main body 110 and together they form the gas generation chamber 101. The upper cover 120 can be connected to the main body 110 by setting a flange or by welding. The specific connection method can be adjusted according to the actual situation.

[0049] In addition, the main body 110 is equipped with a first connecting part 111; the ignition chamber 130 is equipped with a second connecting part 131;

[0050] The injection molded body 140 is connected to the first connecting part 111 and the second connecting part 131, thereby connecting the ignition chamber 130 to the main body 110, and the ignition chamber 130 is placed in the gas generation chamber 101.

[0051] When the igniter 150 is configured, the igniter 150 is covered by the injection molded body 140, and the pin end of the igniter 150 extends out of the gas generation chamber 101, and the ignition end of the igniter 150 extends into the ignition chamber 130.

[0052] Based on the above structure, the injection-molded body 140 is set by injection molding. That is, through injection molding, the igniter 150 can be covered at the same time as the injection-molded body 140 is formed, and it can be installed with the ignition chamber 130 and the main body 110. Thus, the injection-molded body 140 after molding can connect the igniter 150 and the ignition chamber 130 to the main body 110, and make the ignition end of the igniter 150 located in the ignition chamber 130 and in contact with the propellant in the ignition chamber 130. After the ignition chamber 130 is connected to the main body 110 through the injection-molded body 140, it can not only accommodate the ignition end of the igniter 150, but also keep it in the state of being located in the gas-generating chamber 101. The ignition chamber 130 is connected to the gas-generating chamber 101, so that after the propellant in the ignition chamber 130 is ignited, the gas-generating propellant in the gas-generating chamber 101 can work to produce gas.

[0053] In summary, the gas generator 100 is formed by injection molding to create an injection-molded body 140, which serves to connect the ignition chamber 130, the igniter 150, and the main body 110. This method simplifies the connection process and optimizes the structural configuration. Compared to the welding connection method in the prior art, it can effectively improve the connection quality and ensure that the ignition chamber 130 and the igniter 150 are stably connected to the main body 110, resulting in a more robust and reliable structure. It also improves the sealing performance of the gas generator 100.

[0054] Based on the above, please refer to Figures 1-11 In this embodiment, to improve the stability of the connection between the injection molded body 140, the ignition chamber 130, and the main body 110, a first connecting portion 111 and a second connecting portion 131 are respectively provided on the main body 110 and the ignition chamber 130. The purpose is to increase the connection stability between the injection molded body 140, the ignition chamber 130, and the main body 110, and to improve its sealing performance by providing the first connecting portion 111 and the second connecting portion 131. It should be noted that, relative to the aforementioned ignition chamber 130 and the main body... The connection stability of 110 is increased, and the igniter 150 is encased in the injection molded body 140, so its connection stability and sealing can also be increased. In order for the igniter 150 to be electrically connected with the propellant in the ignition chamber 130 and with the external structure, the ignition end of the igniter 150 extends out of the injection molded body 140 and contacts the propellant in the ignition chamber 130, while its pin end protrudes out of the injection molded body 140 and extends out of the main body 110 to be electrically connected with the external structure of the main body 110.

[0055] Please refer to Figures 1-8 There are multiple ways to configure the first connecting part 111 described above. The following explanation uses some of these configuration methods as examples:

[0056] First, please refer to Figures 1-4 When configuring the first connecting part 111, the first connecting part 111 may include a mounting groove 112 recessed in the direction of the gas generating chamber 101. A portion of the injection molded body 140 is accommodated in the mounting groove 112. The groove body of the mounting groove 112 is provided with a through hole 113 and a plurality of limiting hole groups 114. The plurality of limiting hole groups 114 are spaced apart around the axis of the through hole 113. The through hole 113 allows the injection molded body 140 and the igniter 150 to pass through, and the limiting hole groups 114 allow the injection molded body 140 to pass through.

[0057] The mounting groove 112 allows a portion of the injection-molded body 140 to be accommodated within it, thereby increasing the contact area and thus improving connection stability and sealing. A through hole 113 and a set of limiting holes 114 are provided at the bottom of the mounting groove 112. The through hole 113 allows the igniter 150 and the portion of the injection-molded body 140 covering it to pass through, while the set of limiting holes 114 allows the injection-molded body 140 to pass through. This arrangement... By using the through hole 113 and the limiting hole group 114, the part of the injection molded body 140 located in the mounting groove 112 can be connected to the part located outside the mounting groove 112 through the part of the injection molded body 140 located in the through hole 113 and the limiting hole group 114, thereby improving the integrity of the injection molded body 140 and increasing its structural stability. The part of the injection molded body 140 located outside the mounting groove 112 includes the part located in the gas generation chamber 101 and the part located in the ignition chamber 130.

[0058] When configuring the aforementioned limiting hole group 114, its function is to increase the connection stability of the injection molded body 140 based on the through hole 113. Therefore, the limiting hole group 114 may include a plurality of first limiting holes 115 and a plurality of second limiting holes 116 (e.g., Figures 3-6 As shown, multiple first limiting holes 115 and multiple second limiting holes 116 are spaced apart around the axis of the through hole 113, and the multiple first limiting holes 115 are arranged in a ring at intervals on the outer periphery of the through hole 113, and the multiple second limiting holes 116 are arranged in a ring at intervals on the outer periphery of the first limiting holes 115.

[0059] It should be noted that the above-described configuration of the first limiting hole 115 and the second limiting hole 116 is based on the example of a planar mounting groove 112. In other embodiments of this utility model, the bottom of the mounting groove 112 can also be a curved surface. Furthermore, when configuring the first limiting hole 115 and the second limiting hole 116, all the first limiting holes 115 and the second limiting holes 116 are strip-shaped holes (e.g., holes arranged along the tangent direction of the through hole 113) Figure 6As shown), or, the plurality of first limiting holes 115 and the plurality of second limiting holes 116 are all arc-shaped holes arranged around the axis of the through hole 113 (as shown). Figures 3-5 (As shown). Moreover, around the axis of the through hole 113, a plurality of first limiting holes 115 and a plurality of second limiting holes 116 are staggered.

[0060] Unlike the method described above where the limiting hole group 114 is set at the bottom of the mounting groove 112, in other embodiments of this utility model, please refer to... Figure 7 and Figure 8 The limiting hole group 114 may also include a plurality of third limiting holes 117, which are all spaced around the axis of the through hole 113 and are arranged annularly around the outer periphery of the through hole 113; the first connecting part 111 also includes a plurality of fourth limiting holes 118, which are arranged annularly around the axis of the mounting groove 112 on the groove wall of the mounting groove 112; wherein, the injection molded body 140 covers the outside of the mounting groove 112, and the part of it covering the outside of the mounting groove 112 is connected to the part located inside the mounting groove 112 through the third limiting holes 117 and the fourth limiting holes 118.

[0061] That is, through the above-described arrangement, the bottom of the mounting groove 112 is provided with multiple third limiting holes 117, and the arrangement of the third limiting holes 117 is the same as that of the first limiting holes 115 described above. The structural principle is detailed in this step. In addition to the aforementioned third limiting holes 117, a third limiting hole 117 is also provided on the wall of the mounting groove 112. Furthermore, during injection molding of the injection molded body 140, the injection molded body 140 can cover the outside of the mounting groove 112, that is, the portion of the injection molded body 140 located within the gas generation chamber 101 is covered by the gas. The portion of the main body 110 is recessed inward toward the gas generation chamber 101 to form the mounting groove 112. The injection molded body 140 of this portion is connected to the injection molded body 140 portion located in the mounting groove 112 through the fourth limiting hole 118 on the groove wall of the mounting groove 112. In this way, the outer side of the groove bottom of the mounting groove 112 and the outer side of its groove peripheral wall are connected to the injection molded body 140 portion located in the mounting groove 112 through the third limiting hole 117 and the fourth limiting hole 118, respectively, thereby improving the stability of the connection between the injection molded body 140 and the main body 110.

[0062] Please refer to Figures 9-11 , and combined, 1- Figure 8 There are multiple ways to configure the second connecting part 131 described above. The following explanation uses some of these configuration methods as examples:

[0063] First, when configuring the second connecting part 131, since the ignition end of the igniter 150 extends into the ignition chamber 130 and the igniter 150 is covered by the injection molded body 140, by allowing a portion of the injection molded body 140 to extend into the ignition chamber 130 and connect with the second connecting part 131 on the ignition chamber 130, the connection stability between it and the ignition chamber 130 can be improved, and it is also beneficial to maintain the relative position of the ignition end in the ignition chamber 130.

[0064] Specifically, the second connection portion 131 may include a first mounting hole 132 disposed on the side wall of the ignition chamber 130 (e.g., Figure 9 As shown, a portion of the injection-molded body 140 is located within the ignition chamber 130 and connected to the first mounting hole 132. This arrangement allows a portion of the injection-molded body 140 to extend into the first mounting hole 132, thereby increasing its structural stability.

[0065] Furthermore, when configuring the second connecting portion 131, the first connecting portion 111 includes a mounting groove 112 recessed towards the gas generation chamber 101. A portion of the injection-molded body 140 is accommodated within the mounting groove 112. The principle and function of the mounting groove 112 are as described above and will not be repeated here. Based on this, the second connecting portion 131 may also include a bent portion 133 (e.g., ...) disposed at one end of the ignition chamber 130 facing the mounting groove 112. Figure 10 and Figure 11 As shown, a portion of the injection-molded body 140 is located within the ignition chamber 130 and is covered by the bent portion 133. Furthermore, the bent portion 133, covered by the injection-molded body 140, increases the contact area with the ignition chamber 130. Its bent configuration also improves the stability of the structural connection, preventing separation. Moreover, the bent portion 133 can be bent into a flat surface, bent, or can be arranged in an inward or outward manner.

[0066] Based on the configuration of the bending portion 133, the bending portion 133 can be spaced apart from the bottom of the mounting groove 112, and injection molded bodies 140 are distributed at the gap. In this way, the gap area between the ignition chamber 130 and the mounting groove 112 of the main body 110 is filled with injection molded bodies 140, thereby improving its sealing performance.

[0067] Taking the aforementioned arrangement where the bent portion 133 bends inward to form a plane as an example, multiple second mounting holes 134 can also be provided on the bent portion 133. These second mounting holes 134 are spaced apart around the axis of the ignition chamber 130, and the second mounting holes 134 allow the injection molded body 140 to pass through. Furthermore, based on the second mounting holes 134, during injection molding of the injection molded body 140, a portion of the injection molded body 140 can be positioned within the second mounting holes 134, and the portion of the injection molded body 140 located within the ignition chamber 130 can be connected to the portion of the injection molded body 140 located outside the ignition chamber 130, thereby improving the connection stability.

[0068] Based on the above, please refer to Figures 1-11 When configuring the first connecting part 111, there are multiple configuration methods, including configuring the mounting groove 112 and setting the limiting hole group 114 as the first limiting hole 115 and the second limiting hole 116, or setting the limiting hole group 114 as the third limiting hole 117 and the fourth limiting hole 118; when configuring the second connecting part 131, there are also multiple configuration methods, including setting the first mounting hole 132 on the side wall of the ignition chamber 130 and configuring the bending part 133, and setting the second mounting hole 134 based on the bending part 133; in actual use, the configuration methods of the first connecting part 111 and the second connecting part 131 can be combined according to the needs of use.

[0069] It should also be noted that when configuring the ignition chamber 130, the end facing away from the mounting slot 112 can be closed (e.g., Figure 9 (As shown), it can also be left open and closed by installing a cover (as shown). Figure 11 (As shown).

[0070] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A gas generator, characterized in that: The gas generator includes a main body, a top cover, an ignition chamber, an injection-molded body, and an igniter; The upper cover fits onto the main body and together they form a gas-generating chamber; the main body is provided with a first connecting part. The ignition chamber is provided with a second connecting part, and the injection molded body is connected to the first connecting part and the second connecting part to connect the ignition chamber to the main body, and the ignition chamber is placed in the gas generation chamber; The igniter is encased in the injection-molded body, with the pin end of the igniter extending out of the gas-generating chamber and the ignition end of the igniter extending into the ignition chamber.

2. The gas generator according to claim 1, characterized in that: The first connecting part includes a mounting groove recessed towards the gas generation chamber, a portion of the injection molded body is accommodated in the mounting groove, the mounting groove has a through hole and a plurality of limiting hole groups; the plurality of limiting hole groups are spaced apart around the axis of the through hole; The through hole allows the injection molded body and the igniter to pass through, and the limiting hole group allows the injection molded body to pass through.

3. The gas generator according to claim 2, characterized in that: The limiting hole group includes a plurality of first limiting holes and a plurality of second limiting holes. The plurality of first limiting holes and the plurality of second limiting holes are all spaced apart around the axis of the through hole. The plurality of first limiting holes are arranged circumferentially around the outer periphery of the through hole, and the plurality of second limiting holes are arranged circumferentially around the outer periphery of the first limiting holes.

4. The gas generator according to claim 3, characterized in that: The plurality of first limiting holes and the plurality of second limiting holes are all strip-shaped holes arranged along the tangent direction of the through hole.

5. The gas generator according to claim 3, characterized in that: The plurality of first limiting holes and the plurality of second limiting holes are all arc-shaped holes arranged around the axis of the through hole.

6. The gas generator according to claim 2, characterized in that: The limiting hole group includes a plurality of third limiting holes, all of which are spaced apart around the axis of the through hole, and are arranged in a ring-shaped interval on the outer periphery of the through hole. The first connecting part further includes a plurality of fourth limiting holes, which are arranged circumferentially and spaced apart on the wall of the mounting groove around the axis of the mounting groove; The injection-molded body covers the outside of the mounting groove, and the portion of the body covering the outside of the mounting groove is connected to the portion located inside the mounting groove through the third limiting hole and the fourth limiting hole.

7. The gas generator according to any one of claims 1-6, characterized in that: The second connecting part includes a first mounting hole disposed on the side wall of the ignition chamber, and a portion of the injection molded body is located inside the ignition chamber and connected to the first mounting hole.

8. The gas generator according to any one of claims 1-6, characterized in that: The first connecting portion includes a mounting groove recessed towards the gas generation chamber, and a portion of the injection molded body is accommodated in the mounting groove; the second connecting portion includes a bent portion disposed at one end of the ignition chamber facing the mounting groove, and a portion of the injection molded body is located in the ignition chamber and covers the bent portion.

9. The gas generator according to claim 8, characterized in that: The bent portion is spaced apart from the bottom of the mounting groove, and the injection molded parts are distributed at the interval.

10. The gas generator according to claim 8, characterized in that: The bent portion has multiple second mounting holes, which are spaced apart around the axis of the ignition chamber, and the second mounting holes allow the injection molded body to pass through.

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