JP2018177170A - Gas generator and assembling method of gas generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize preferable exclusion of moisture of gas generation agent charged in a gas generator while suppressing assembling load of the gas generator.SOLUTION: There is provided a gas generator comprising an igniter, a housing which stores the igniter and has an outlet communicating its inner section and outer section, and a filler room which is filled up with solid gas generation agent and in which the gas generation agent is charged at a position where the charged gas generation agent may be burned by an action of the igniter. A predetermined section in the housing including at least the filler room is formed in a predetermined airtight state from outer section of the predetermined section. A pressurized section is further provided, which is in a higher pressure state. The pressurized section maintains the predetermined airtight state before the action of the igniter, and it is separated from its outer section with a seal member which is cleaved by flue gas from the gas generation agent generated due to the action of the igniter. The pressurized section is defined in the housing by a section defining member jointed via a predetermined interposed member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gas generator that burns a gas generating agent by the operation of an igniter to generate a combustion gas, and a method of assembling the same.

  In the gas generator that generates combustion gas by the combustion of the gas generating agent, the gas generating agent filled in the gas generator is dried as expected to achieve the desired gas generation performance (output performance). It is required to fit. Therefore, conventionally, a moistureproof member such as an O-ring or a gasket is used to damp out the gas generating agent disposed in the gas generator. For example, in the gas generator shown in Patent Document 1, the housing of the gas generator is constituted by an outer cylinder whose both ends are open, and a closing member and a lid member which cover both open ends of the outer cylinder. In the gas generator, the closing member and the lid member are fitted into both openings of the outer cylinder through a seal ring such as an O-ring, so that the airtightness of the housing filled with the gas generating agent can be maintained. Be

  In addition, as another method of preventing the gas generating agent from being damped, a coating technique of a sealing agent in a housing of a gas generator is adopted. For example, Patent Document 2 discloses a technique for sealing a gas generating agent in a container and making the container airtight. In the art, the gas generant pack forms the cups and caps that comprise it from an aluminum alloy. Then, a sealing agent for winding is applied to the cup outer peripheral portion of the cap, and the sealing agent for winding is hardened to be a packing, and the airtightness of the container can be improved by the double winding and forming portion.

Japanese Patent Application Laid-Open No. 11-78766 JP-A-3-128744 JP 10-35402 A Patent No. 4587550 gazette

  In the conventional moistureproof technology, a member which is separate from the gas generator housing for moisture proofing, for example, the moistureproof member such as the O-ring, gasket, sealing agent for coating, etc., is interposed in the gas generator housing The moistureproofing of the gas generating agent filled in the housing is achieved. Such a moistureproof member is generally incorporated in the housing in a state of being elastically deformed at the time of assembly of the gas generator, so that the internal airtightness can be maintained. However, the performance of such a moistureproof member gradually decreases with the passage of time, and practically it is not easy to maintain an airtight state at the molecular level, and the airtightness in the gas generator decreases with time. There are possibilities.

  Moreover, in the conventional moistureproof technology, since the above moistureproof member different from the housing is used, the load of quality control of the moistureproof member is also increased, and depending on the shape and number of moistureproof members used, the assembly process of the gas generator As a result, the assembly load may increase.

  An object of the present invention is to provide a technique for appropriately dampening the gas generating agent disposed in the gas generator while suppressing the assembly load of the gas generator in view of the above-mentioned problems.

  In order to solve the above problems, according to the present invention, the region filled with the gas generating agent inside the housing is in a predetermined airtight state with respect to the outside, and in a state of higher pressure than the outside. A structure was employed to define a pressure area within the housing. With such a configuration, it is possible to prevent the outside air containing moisture from entering from the outside into the area to be filled with the gas generating agent while using the conventional sealing means without requiring a separate member from the housing. It can be effectively suppressed.

  Specifically, the present invention is an igniter, a housing for housing the igniter, the housing having an outlet connecting the inside and the outside of the housing, and a filling chamber filled with a solid gas generating agent. A filling chamber for disposing the gas generating agent at a position where the filling gas generating agent can be burned by the operation of the igniter in the housing. Then, the gas generator is surrounded by a plurality of area defining members to form a predetermined airtightness with respect to the outside of the predetermined area at least in the predetermined area in the housing including the filling chamber. The pressure region further includes a pressurized region in which a high pressure state higher than a pressure outside the predetermined region is formed. Further, in the plurality of area defining members, a seal member which maintains the predetermined airtight state before the operation of the igniter, and which is split by the combustion gas from the gas generating agent generated by the operation of the igniter At least one of the plurality of area definition members and the other area definition members included in the plurality of area definition members are not joined by welding, and are disposed between the two area definition members in a state where external force is applied. Are joined via the interposition member of

  The gas generator according to the present invention adopts a configuration in which the filling chamber in the housing is filled with the gas generating agent. The gas generating agent charged in the filling chamber may be burned directly by the combustion product generated by the operation of the igniter, or via combustion of a charge transfer agent or the like different from the charged gas generating agent. May be burned. In addition, the igniter of this invention may be comprised so that an igniter main body and an igniter collar may be included, and only an igniter main body may be sufficient as it. And in order to protect the gas generating agent with which the filling chamber in such a housing was filled with the moisture from the outside, the said pressurization area | region is formed so that a predetermined | prescribed airtight state may be formed in the predetermined area | region containing a filling chamber. Is formed. Here, the pressure region is a region (space) defined by being surrounded by a plurality of region defining members, but the bonding between the region defining members is performed by welding at at least one bonding site. Instead, a bonding form in which the above-mentioned predetermined intervening member is interposed is adopted. As described above, in the joining configuration using predetermined intervening members, while it is possible to enjoy the advantages such as small assembly load required for joining and the ability to avoid the influence of heat generation due to welding, etc. The possibility of gas communication at the molecular level remains, and the degree of gas tightness is expected to be smaller compared to the form of the weld joint. Based on this point, a predetermined airtight state is formed in the pressure area formed by adopting the bonding mode in which the predetermined intervening member is interposed. The predetermined air-tight state is the degree of air-tightness to the outside of the predetermined area, which is formed at the time of manufacturing the gas generator and which is suitable for preventing moisture of the filled gas generating agent. In other words, in order to secure the combustion characteristics of the gas generating agent required for the gas generator at the time of manufacture, the airtight state in the predetermined area where the gas generating agent can be protected from external moisture is It is airtight.

The pressure area is further pressurized to a high pressure state higher than the pressure outside the pressure area. As a result, due to the pressure difference between the inside and the outside of the pressurized area, it is possible to effectively suppress the outside air from entering the inside with the moisture from the outside of the pressurized area. In addition, since the gas generating agent is placed under a high pressure atmosphere by the formation of the pressurized region, the ignition and combustion rates can be increased, and the combustion initiation characteristics of the gas generating agent can be made advantageous. . The high pressure state of the pressure area may be formed by enclosing a predetermined inert gas such as argon or helium. Such an inert gas does not affect the combustion of the gas generating agent in the filling chamber included in the pressurized region, so that the unexpected combustion of the gas generating agent due to the high pressure state is sufficiently suppressed. In addition, since nitrogen and the like have relatively little influence on the combustion of the gas generating agent, they can be suitably used for forming a high pressure state. With regard to the inert gas and the like for forming the high pressure state in the pressurized region, the amount of inert gas is more sufficient than the combustion gas generated from the gas generating agent to the extent necessary for preventing moisture in the pressurized region. It may be less.

  Then, in the pressurized area, a predetermined airtightness with respect to the outside is maintained by the seal member corresponding to one of the area defining members before operation of the igniter, that is, until combustion of the gas generating agent is performed. Ru. In addition, the seal member is configured to be split by the combustion gas generated by the igniter operating and the gas generating agent burning. Therefore, the predetermined airtightness maintained by the seal member until the operation of the igniter is eliminated by the operation of the igniter, and the combustion gas from the gas generating agent is removed from the pressurized region at the portion of the seal member which has been split. It leaks to the outside through it and is discharged to the outside of the gas generator through the outlet of the housing.

  In the gas generator configured as described above, until the igniter is activated, the filling chamber in the pressurizing area is pressurized by the high pressure state in the pressurizing area maintained by the seal member and the predetermined intervening member. It is possible to suppress the entry of external air accompanied by moisture from the outside. Even if the gas in the pressurized region (the above-mentioned inert gas and the like) may leak to the outside, the predetermined degree of leakage can be suppressed to a small degree by the above-mentioned predetermined interposition member, so that the predetermined airtight state can be maintained. Thus, the moistureproof performance of the gas generator can be maintained for a relatively long period of time. Further, in the above gas generator, a moistureproof member such as an O-ring or the like is not additionally required separately from the predetermined interposed member in order to improve its moistureproof performance, and therefore, the quality control process of the moistureproof member and the moistureproof member are further incorporated. There is no need to go through the process, and it is possible to avoid an increase in the assembly load of the gas generator. That is, the more effective moisture-proof effect can be achieved even with only the moisture-proof structure by the bonding form using a predetermined interposed member as the moisture-proof member.

  Here, in the above gas generator, the plurality of area defining members include the housing and the igniter, the seal member is joined to the housing side by welding, and the igniter is The predetermined interposition member which is elastically deformable or plastically deformable may be interposed between the housing and the housing and fixed thereto. In the welding, the area defining members are melted and joined, and as a result, in the pressurized area, the airtightness of the side on which the igniter is disposed is about the airtightness of the side on which the sealing member is disposed. Absent. However, as described above, since the inside of the pressurized area is placed at a high pressure state, it is possible to suppress the entry of external air accompanied by moisture from the outside, and temporarily the gas in the pressurized area on the side where the igniter is disposed. Even if it leaks to the outside, the side on which the seal member is disposed achieves a sufficiently high airtightness, so the degree of the leakage is gentle, and hence the predetermined airtightness in the pressure area is sufficiently It can be maintained for a long time.

  As another method, in the above gas generator, the filling chamber is formed by at least two membrane members corresponding to the seal member, which can be cleaved even by combustion products generated by the operation of the igniter. In the inner space of the container, between the at least two membrane members, a sealing agent which is the predetermined intervening member applied to both membrane members is disposed, and in the inner space of the filled container, the pressure is applied The filling container may be arranged in the housing in an area and formed in the high pressure state. In such a configuration, the housing and the igniter different from those described above do not contribute to the definition of the pressure area. Therefore, by adopting the configuration, the assembling process of the gas generator main body including the housing and the process of filling the gas generating agent and forming the pressurizing area can be realized separately. As a result, it is possible to efficiently realize the filling of the gas generating agent and the formation of the pressurized region, thereby reducing the assembling load of the gas generator.

Here, in the above-described gas generator, the housing is formed in a cylindrical shape, the discharge port is disposed on one end side of the housing, and the igniter is configured to be opposed to the discharge port. It may be disposed on the other end side of the housing with the filling chamber interposed therebetween. Therefore, in such a gas generator, the igniter, the filling chamber, and the outlet are disposed along the longitudinal direction of the cylindrical housing, and the igniter and the filling chamber in the internal space of the housing are The area on the side of inclusion is the above-mentioned pressure area. The term "end side" mentioned above includes not only the end face of the cylindrical housing but also the region of the housing wall near the end face.

  Further, in the gas generator described above, only the filling chamber may be set as the pressurizing region. According to such a configuration, the area in which the high pressure state is formed can be made as small as possible, thereby reducing the assembly load of the gas generator. The housing may include an area other than the pressure area, that is, a non-pressure area which is not pressurized to a high pressure state. When the non-pressurized area is included in the housing, the outlet provided in the housing may be connected to the non-pressurized area. On the other hand, when only the pressure area is included in the housing, the above-mentioned seal member is arranged to close the discharge port provided in the housing.

  Here, the present invention can be grasped from the aspect of the method of assembling a gas generator. That is, the present invention comprises an igniter, and a housing that accommodates the igniter and has an outlet connecting the inside and the outside of the housing, and is generated by the operation of the igniter in the housing. A method of assembling a gas generator which burns a gas generating agent by a combustion product, wherein the housing is a predetermined region including at least a filling region to be filled with the gas generating agent, and the predetermined region In the inside of the housing, there is a sealed area divided by a seal member which is split by the combustion gas from the gas generating agent generated by the operation of the igniter to the outside of the housing. Then, in the assembling method, a preparation step of preparing the igniter, the housing, and the gas generating agent in an assembly chamber in which a predetermined high pressure state higher than atmospheric pressure is formed, and the high pressure Filling the gas-generating agent into the filling area of the housing in the assembly chamber, and filling the filling area in the housing in the assembly chamber in which the high pressure state is maintained. The igniter is attached to the housing at a position on the side of the sealed area where the gas generating agent filled in the fuel can be burned by the operation of the igniter, and a predetermined airtightness in the sealed area is established. And an attaching step to form a state. The assembly method makes it possible to assemble the gas generator having the above-mentioned pressurized area in the housing, thereby effectively preventing the gas generant from desorbing in the gas generator housing while reducing the assembly load. Can be realized.

Also, alternatively, the assembling method may include the gas generating agent and at least two films cleavable by the combustion product in an assembling chamber in which a predetermined high pressure state higher than atmospheric pressure is formed. A preparation step of preparing a filling container formed by a seal member, wherein the filling container is a filling region whose internal space is a filling region to be filled with the gas generating agent, and the high pressure state is maintained. Filling the gas container with the gas generating agent in the assembled chamber, and after the filling step in the assembled chamber in which the high pressure state is maintained. A sealing step of sealing the filling container by applying a sealing agent between the sealing members to form a predetermined airtight state inside the filling container; and the predetermined airtight state Taking out the formed filling container out of the assembly chamber, and storing the filling container in the housing outside the assembly chamber, and thereafter, the position where the filling container becomes cleavable by the operation of the igniter Attaching the igniter to the housing. According to the assembly method, the formation of the above-described pressurized area can be performed separately from the assembly of the main body of the gas generator, ie, the filling step and the sealing step are performed in the assembly chamber, and the mounting step is assembled. Since the process is performed outside the chamber, the assembly on the main body side of the gas generator can be performed under an atmosphere that is not a high pressure state, thereby reducing the assembly load of the gas generator.
Thereby, it is possible to realize effective moisture proofing of the gas generating agent in the housing of the gas generator while reducing the assembly load.

  According to the present invention, it is possible to preferably damp the gas generating agent disposed in the gas generator while suppressing the assembly load of the gas generator.

It is a 1st figure which shows schematic structure of the gas generator of this invention. It is a figure which shows the flow of an assembly of the gas generator shown in FIG. It is a flowchart regarding the assembling method of the gas generator shown in FIG. It is a 2nd figure which shows schematic structure of the gas generator of this invention. It is a 3rd figure which shows schematic structure of the gas generator of this invention. It is a 4th figure which shows schematic structure of the gas generator of this invention. It is a flowchart regarding the assembling method of the gas generator shown in FIG.

  Hereinafter, a gas generator according to an embodiment of the present invention and an assembling method thereof will be described with reference to the drawings. In addition, the structure of the following embodiment is an illustration, and this invention is not limited to the structure of these embodiment.

Example 1
FIG. 1 is an axial sectional view of the gas generator 1. An igniter 16 is attached to one end side (left side in the drawing) of the cylindrical housing 10. The igniter 16 is a known electric igniter main body 16a fixed to a metal igniter collar, and an igniter including an igniter is disposed so as to protrude from the igniter collar toward the inside of the housing 10 It is done. Therefore, the combustion product of the igniter generated by the operation of the igniter 16 is released to the inside of the housing 10. The igniter 16 is fixed by caulking the igniter collar to the housing 10 by the caulking portion 18. At this time, in a state where an O-ring 17 made of resin is interposed between the igniter collar of the igniter 16 and the housing 10, caulking fixation by the caulking portion 18 is realized. Thereby, a certain degree of airtightness is formed between the igniter 16 and the housing 10.

  On the other hand, a diffuser 12 is attached to the other end side (right side in the drawing) of the housing 10 and is integral with the housing 10. The diffuser 12 has a substantially cup shape having a peripheral wall 12b and a bottom 12c, and an edge of the peripheral wall 12b extending along the longitudinal direction of the housing 10 is provided with a flange 12a extending in the radial direction There is. The end of the flange portion 12 a is fixed by welding to the housing 10. The weld site is referenced 11. With the flange portion 12a welded and fixed to the housing, the peripheral wall portion 12b is positioned to project outward from the internal space of the housing 10, and a plurality of gas discharge ports 15 are formed in the peripheral wall portion 12b. It is done. The gas discharge port 15 is a through hole communicating the inside and the outside of the diffuser 12 (that is, the outside of the gas generator 1). The housing 10 and the diffuser 12 may be formed by an integral member from the beginning.

Further, a cup-shaped member 40 is disposed so as to be located inside the housing 10 and to be connected to the end face of the flange portion 12 a of the diffuser 12. The cup-shaped member 40 is a cup-shaped member having a bottom surface 40 a and a peripheral wall portion 40 b extending along the longitudinal direction of the housing 10, and a plurality of communication holes 40 c are formed in the peripheral wall portion 40 b. The communication hole 40c is a hole that communicates the inside and the outside of the cup-like member 40 (that is, the internal space of the housing 10). Further, a protrusion 40 d is formed in the center of the bottom surface 40 a of the cup-shaped member 40 so as to extend toward the igniter 16.

  Here, the cup-shaped member 40 is welded and fixed to the flange portion 12 a of the diffuser 12. In a state where the cup-shaped member 40 is welded and fixed to the diffuser 12, the internal space of the diffuser 12 (the concave shaped space of the cup-shaped portion) and the internal space of the cup-shaped member 40 (the concave shaped space of the cup-shaped portion) are connected In this state, the opening of the cup-shaped member 40 is closed by a sealing tape 45 made of aluminum so as to shut off both internal spaces. The outer diameter of the cup-shaped member 40 is smaller than the inner diameter of the housing 10. For this reason, a gap 36 exists between the peripheral wall portion 40 b and the inner wall surface of the housing 10, and forms a dead end gap 36 at the flange portion 12 a of the diffuser 12. The gap 36 functions to retain the mist in the combustion gas by continuing with the tubular gap 35 formed between the inner cylinder 30 and the housing 10 described later.

  Here, the first porous plate member 22 is disposed on the igniter 16 side of the housing 10 at a distance from the igniter 16. The first porous plate member 22 is formed of a plate-like member having a circular peripheral edge, and the peripheral edge is fixed to the housing 10 by being pressed against the inner wall surface of the housing 10. Further, the first porous plate member 22 is provided with a plurality of through holes 22a penetrating the front and back. A space surrounded by the igniter 16, the housing 10, and the first porous plate member 22 becomes a transfer charge filling chamber 20, and the transfer charge 21 is filled therein. The transfer charge 21 is held by the first porous plate member 22 in a state of being pressed to the igniter 16 side, and is in contact with the ignition portion of the igniter main body 16a. Further, since the through hole 22 a of the first porous plate member 22 is an opening smaller than the transfer charge 21, there is no possibility that the transfer charge 21 leaks from the transfer charge filling chamber 20. The through hole 22a may be closed by a predetermined sealing tape.

  As the transfer charge 21, it is possible to use a gas generating agent which has good ignitability and sustains combustion (high combustion temperature). The combustion temperature of the transfer charge 21 is preferably in the range of 1700 to 3000 ° C. As such a charge transfer agent, for example, a disk-shaped one made of nitroguanidine (34% by weight) and strontium nitrate (56% by weight) and having an outer diameter of 1.5 mm and a thickness of 1.5 mm can be used.

  Next, the filling form of the gas generating agent 26 in the housing 10 will be described. In the housing 10, an inner cylinder 30 is further disposed between the first porous plate member 22 and the cup-like member 40. The inner cylinder 30 has a peripheral wall portion along the longitudinal direction of the housing 10, and the outer diameter of the peripheral wall portion is smaller than the inner diameter of the housing 10. Therefore, a cylindrical gap 35 of equal width is formed between the inner cylinder 30 and the housing 10. Furthermore, in the inner cylinder 30, a plurality of gas passage holes 37 are formed in the peripheral wall at substantially equal intervals in the longitudinal direction of the housing 10 and also in the circumferential direction of the peripheral wall of the inner cylinder 30. It is done. The gas passage hole 37 is a through hole communicating the filling chamber 25 which is the internal space of the inner cylinder 30 and the cylindrical gap 35. The gas passage holes 37 are provided so that the combustion gas generated by the combustion of the gas generating agent 26 filled in the filling chamber 25 smoothly flows to the diffuser 12 side as described later. Therefore, the gas passage hole 37 may be formed closer to the diffuser 12 side in the peripheral wall portion of the inner cylinder 30, and the opening area of the gas passage hole 37 may be increased as it approaches the diffuser 12 side. .

Here, the inner cylinder 30 has an enlarged diameter portion 31 formed in a flange shape extending in the radial direction of the housing 10 on the igniter 16 side, and the outer peripheral edge of the enlarged diameter portion 31 is the housing 10 It is in contact with the inner wall surface. The outer diameter of the outer peripheral edge of the enlarged diameter portion 31 is slightly larger than the inner diameter of the housing 10, and when the inner cylinder 30 is disposed in the housing 10, the elasticity of the peripheral wall portion of the inner cylinder 30 causes expansion. The diameter portion 31 is fixed to the inner wall surface of the housing 10 by being pressed thereto. Therefore, no gap is formed in the pressing portion between the enlarged diameter portion 31 and the housing 10. Note that, in order to fix the inner cylinder 30 more stably, a stepped portion fitted to the outer peripheral edge of the enlarged diameter portion 31 or a projection engaged with the outer peripheral edge may be formed on the inner wall of the housing 10.

  Further, the inner cylinder 30 has a bottom surface on the diffuser 12 side, and a central hole 32 is formed at the center of the bottom surface. The central hole 32 is formed to be engageable with a protrusion 40 d formed on the bottom surface 40 a of the cup-shaped member 40. Therefore, in the state where the inner cylinder 30 is disposed in the housing 10, the enlarged diameter portion 31 is pressed against the inner wall surface of the housing 10, and the central hole 32 is fitted to the projection 40d of the cup-shaped member 40. In this state, the inner cylinder 30 is stably fixed in both the longitudinal and radial directions of the housing, and is disposed coaxially with the housing 10.

  The internal space of the inner cylinder 30 is filled with the gas generating agent 26 and functions as a filling chamber 25 for holding. Specifically, in a state where the gas generating agent 26 is filled in the filling chamber 25 of the inner cylinder 30, the second porous plate member 23 is further disposed between the inner cylinder 30 and the first porous plate member 22. It is done. Therefore, the space 24 where the gas generating agent or the like is not disposed is located between the first porous plate member 22 and the second porous plate member 23. Similarly to the first porous plate member 22, the second porous plate member 23 is also formed by a plate-like member having a circular peripheral edge, and the peripheral edge is pressed against the inner wall surface of the housing 10 with respect to the housing 10. It is fixed. Further, the second porous plate member 23 is provided with a plurality of through holes 23 a penetrating the front and back. A space surrounded by the inner cylinder 30, the housing 10, and the second porous plate member 23 is a filling chamber 25, which is filled with a gas generating agent 26. The gas generating agent 26 is held by the second porous plate member 23 in a state of being pressed to the inner cylinder 30 side. For this reason, the gas generating agent 26 in the filling chamber 25 will be densely filled, and it will be prevented from moving and forming a gap. Further, since the through hole 23 a of the second porous plate member 23 is an opening smaller than the gas generating agent 26, there is no possibility that the gas generating agent 26 leaks from the filling chamber 25. The through hole 23a may be closed by a predetermined sealing tape.

  The gas generating agent 26 uses a gas generating agent having a combustion temperature lower than that of the transfer charge 21. The combustion temperature of the gas generating agent 26 is desirably in the range of 1000 to 1700 ° C., for example, an outer diameter comprising guanidine nitrate (41% by weight), basic copper nitrate (49% by weight) and a binder and additives. A single-hole cylindrical one having a diameter of 1.8 mm, an inner diameter of 0.7 mm and a length of 1.9 mm can be used.

Here, in the gas generator 1, a predetermined area in the housing 10 including the filling chamber 25 in which the gas generating agent 26 is filled and the transfer charge filling chamber 20 in which the transfer charge 21 is filled, more specifically, A predetermined area including the explosive charge chamber 20, the space 24, the filling chamber 25, the cylindrical gap 35, the gap 36, and the internal space of the cup-shaped member 40 is a relatively airtight pressurized area. That is, the pressure area is an area defined by being surrounded by the materials of the housing 10, the igniter 16, the diffuser 12, and the sealing tape 45. The airtightness of the pressure area is realized by caulking and fixing the O-ring 17 between the igniter 16 and the housing 10 and the closing of the opening of the cup-shaped member 40 by the sealing tape 45. In addition, since the diffuser 12 and the housing 10 are fixed by welding, it is not necessary to substantially consider the reduction in air tightness caused by the welding fixing portion. On the other hand, the tightness between the housing 10 and the igniter 16 via the O-ring 17 is not as high as the tightness by welding and fixing with the seal tape 45. In addition, the pressure inside the pressure area is controlled by filling the inside of the pressure area with an inert gas such as argon or helium so that the pressure inside the pressure area can be A high pressure condition is created that is higher than the pressure of the outside). In the present embodiment, a region which is formed inside the gas generator 1 and which is not filled with the inert gas and which has a pressure lower than the pressure region is referred to as a non-pressure region. When the pressure in the non-pressurized area is atmospheric pressure (1 atm = about 100 kPa), the pressure in the pressurized area is, for example, 0.2 MPa or more, preferably about 2 MPa.

  The inert gas thus filled to form the high pressure state is generally well held in the pressurized area due to the airtightness in the above-described pressurized area. Therefore, it is possible to effectively prevent external air with moisture from entering the pressure area from the outside of the pressure area, particularly into the filling chamber 25 or the like filled with the gas generating agent 26 etc. Thus, the moisture proof performance of the gas generator 1 can be maintained high. Also, temporarily, if the airtightness due to the O-ring 17 etc. decreases with time due to the aged deterioration of the O-ring 17 etc., or even if the aged deterioration does not occur, the physical airtightness of the O-ring 17 etc. Even when the inert gas filled in the pressurized area leaks to the outside due to limitations etc., the degree of leakage is so small that the inert gas can be held in the pressurized area for a relatively long period of time. Thus, it is possible to suppress the ingress of external air accompanied by moisture from the outside, and maintain the high moisture proof performance of the gas generator 1.

  Furthermore, by setting the filling chamber in which the gas generating agent 26 and the like are filled in an atmosphere under high pressure, it is possible to increase the burning rate of the gas generating agent and the like. Thereby, the combustion initiation characteristics of the gas generating agent 26 and the like in the gas generator 1 can be made advantageous, which accelerates the gas release of the gas generator 1 (for the release of gas from the igniter operation). Contribute to shortening of the time required).

  Here, a method of assembling the gas generator 1 will be described based on FIGS. 2 and 3. FIG. 2 schematically shows the flow of assembly of the gas generator 1, and FIG. 3 is a flowchart of the assembly method. First, in S101, each component constituting the gas generator 1 is carried into the assembly chamber 80 in which the gas generator 1 is assembled, and preparation for assembly is performed. Specifically, a unit in which the diffuser 12, the cup-shaped member 40 and the sealing tape 45 are previously attached to the housing 10 is carried into the assembly chamber 80. Furthermore, the inner cylinder 30, the necessary amount of gas generating agent 26, the second porous plate member 23, the first porous plate member 22, the necessary amount of transfer charge 21, and the igniter 16 to which the O-ring 17 is attached are respectively assembled chambers. It is carried into the 80s. The loading of components into the assembly chamber 80 is performed via the openable door 81.

  When all parts are carried in, the door 81 is closed to seal the assembly chamber 80, and then the assembly chamber 80 is filled with an inert gas to form the above-mentioned high pressure state in the chamber (S102). Processing of Specifically, by controlling the opening degree of the on-off valve 83 of the tank 82 in which the inert gas is stored, the amount of the inert gas flowing from the tank 82 into the assembly chamber 80 is controlled, and a high pressure state is achieved. Formation is realized. In addition, the pressure in the assembly chamber 80 is confirmed using the detection value of the pressure sensor which is not shown in figure.

  When a high pressure state is formed in the assembly chamber 80, the inner cylinder 30 is inserted into the housing 10 carried into the chamber (processing of S103). At this time, the central hole 32 of the inner cylinder 30 is fitted into the projection 40 d of the cup-shaped member 40, and the enlarged diameter portion 31 of the inner cylinder 30 is pressed against the inner wall surface of the housing 10. Thereafter, the gas generating agent 26 is filled in the internal space (filling chamber 25) of the inner cylinder 30 fixed to the housing 10 (processing of S104). When the gas generating agent 26 is filled, the second porous plate members 23 are also inserted into the housing 10 so that they do not move in the housing 10 unintentionally. The insertion is performed so as to press the inner cylinder 30 side, and the second porous plate member 23 is fixed to the housing 10.

Next, the first porous plate member 22 is inserted into the housing 10, and the first porous plate member 22 is fixed at a position in the housing 10 suitable for filling the necessary amount of transfer charge 21. Thereafter, the transfer charge 21 is filled into the housing 10 (processing of S105), and the igniter 16 is further inserted into the housing 10 so as to contact the filled transfer charge 21. Is attached by caulking (processing of S106). In the gas generator 1 configured as described above, the transfer charge 21 is burned by the operation of the igniter 16, and the combustion gas generated by burning the gas generating agent 26 by the combustion is the gas passing hole 37 and the communication hole. It reaches into the cup-shaped member 40 through 40c. Then, the sealing tape 45 is cleaved by the energy of the combustion gas, and the combustion gas is discharged from the gas outlet 15 of the diffuser 12 to the outside. Therefore, at the fixed position of the first porous plate member 22 described above, the thermal energy of the transfer charge 21 burned by the operation of the igniter 16 propagates to the gas generating agent 26 suitably filled in the filling chamber 25, It can also be said to be a position for arranging the igniter 16 at a position where the gas generating agent 26 can burn.

  According to such an assembly method, the assembly of the gas generator 1 in the high pressure atmosphere in the assembly chamber 80, that is, the filling of the gas generating agent 26 and the transfer charge 21 in the housing 10, and the igniter for the housing 10 There will be 16 installations. As a result, in the gas generator 1 after assembly, a region with a relatively high airtightness formed therein, ie, the O-ring 17 and the seal tape 45 interposed between the igniter 16 and the housing 10 In the defined pressurized area, a predetermined gas tight state in which inert gas is sealed at high pressure will be formed. Then, after the assembly is completed, the inert gas in the assembly chamber 80 may be exhausted, the door 81 may be opened, and the completed gas generator 1 may be taken out.

  A gas generator assembled according to the above assembling method is a gas generator 1 shown in FIG. And since the gas generator 1 has the pressurization area | region formed by the inert gas being sealed in the housing 10 as mentioned above, it is remarkable with respect to the transfer charge 21 and the gas generating agent 26. Moisture proof performance can be exhibited. This is a very useful effect to maintain the gas generation performance (output performance) of the gas generator 1 suitably over a long period of time. Also, in order to achieve such remarkable effects, additional moisture-proof members (such as O-rings and gaskets) and special moisture-proof members are not required. Does not require an additional assembly step. Therefore, according to the technology of the present embodiment, it is possible to preferably damp the gas generating agent 26 etc. without raising the load of the assembly process.

<Modification>
The modification of the gas generator 1 which concerns on a present Example is demonstrated based on FIG. As for the gas generator 1 shown in FIG. 4, the attachment position of the seal tape 450 is different from the attachment position of the seal tape 45 in the gas generator 1 shown in FIG. Detailed description of the same configuration is omitted. In the gas generator 1 shown in FIG. 4, the seal tape 450 is attached to the outside of the peripheral wall portion 12 b so as to close the gas discharge port 15 of the diffuser 12. Alternatively, the sealing tape 450 may be attached to the inside of the peripheral wall 12b. Therefore, in this case, substantially the entire area inside the gas generator 1 is a pressurized area, and the non-pressurized area is not substantially included. Also in the gas generator 1 of this modification, as in the gas generator 1 of the first embodiment, it is possible to preferably damp the gas generating agent 26 etc. without unnecessarily increasing the load of the assembly process. I understand that there is.

Example 2
A gas generator 100 according to a second embodiment will be described based on FIG. FIG. 5 is an axial sectional view of the gas generator 100. Unlike the gas generator 1 of the first embodiment, the gas generator 100 does not contain a transfer charge, and the gas generator 126 is directly burned by the operation of the igniter 116. Further, in the housing 110 of the gas generator 100, a filter 160 for collecting combustion residues of the gas generating agent 126 is disposed. Specifically, an igniter 116 is attached to one end side (left side in the drawing) of the cylindrical housing 110. Similarly to the igniter 16, the igniter 116 also has a known electric igniter main body fixed to a metal igniter collar, and an igniter including an igniter from the igniter collar to the housing 110. It is disposed to project inward. Therefore, the combustion product of the igniter generated by the operation of the igniter 116 is released to the inside of the housing 110. The igniter 116 is crimped and fixed to the housing 110 by a caulking portion 118 where the igniter collar is located at the end of the housing 110. At this time, with the resin O-ring 117 interposed between the igniter collar of the igniter 116 and the housing 110, caulking fixation by the caulking portion 118 is realized. Thereby, a certain degree of air tightness is formed between the igniter 116 and the housing 110.

  An isolation wall 146 is provided at a position in the vicinity of the central portion of the housing 110 opposite to the ignition portion of the igniter 116 so as to divide the internal space of the housing 110 into two in the longitudinal direction. The isolation wall 146 is fixed by welding to the housing 110, and the weld site is referred to by reference numeral 146a. A generally central portion of the isolation wall 146 is provided with a through hole 147 communicating the two internal spaces in the divided housing 110. Then, before operation of the igniter 116, the through hole 147 is closed with an aluminum seal tape 145 so as to shut off both internal spaces, and the peripheral edge of the seal tape 145 is fixed by welding to the separation wall 146. The weld site is referenced by reference numeral 145a. In the gas generator 100, a space surrounded by the igniter 116, the housing 110, the separation wall 146, and the sealing tape 145 becomes a filling chamber 125, and the gas generating agent 126 is filled therein. The gas generating agent 126 is filled to such an extent that the gas generating agent 126 can not move generally in the filling chamber 125, so the ignition portion of the igniter body and the gas generating agent 126 are in contact. As a result, when the igniter 116 operates, the combustion product burns the gas generating agent 126 and the combustion gas generated there cleaves the seal tape 145, and the combustion gas is separated by the separation wall 146 in the housing 110. In the internal space of the above, it flows into the internal space (filter room which is the internal space on the right side in the figure) other than the filling chamber 125.

  The filter chamber is an end portion of the housing 110 and an end wall 148 provided at the end opposite to the side where the igniter 116 is disposed, a space defined by the separation wall 146 and the housing 110. It is. A plurality of gas discharge ports 115 are formed in the housing 110 corresponding to the filter chamber. The gas discharge port 115 is a through hole communicating the inside and the outside of the housing 110 (that is, the outside of the gas generator 1). Therefore, the air tightness like the filling chamber 125 is not required for the filter chamber. Therefore, the end wall 148 does not have to be welded and fixed to the housing 110 like the separation wall 146, and in this embodiment, is only caulked and fixed to the housing 110 by the caulking portion 148a.

  Furthermore, a filter 160 formed to extend annularly and in the longitudinal direction of the housing 110 so as to face the gas discharge port 115 is disposed. The filter 160 is formed by radially overlapping flat stainless steel wire netting, radially and axially compressing it, cooling the combustion gas generated in the filling chamber 125, and collecting the combustion residue. The space of the hollow portion 150 of the filter 160 is connected to the through hole 147, and the combustion gas generated by the combustion of the gas generating agent 126 is introduced into the hollow portion 150 of the filter 160 and is further discharged through the filter 160. It will be led to the exit 115. In addition, between the outer peripheral surface of the filter 160 and the inner wall surface of the housing 110 so that the filter 160 is not deformed by the gas pressure when the igniter 116 is operated to block the gas discharge port 135 at the outside of the filter 160. An annular gap 151 is formed.

Here, in the gas generator 100, a predetermined area in the housing 110 including the filling chamber 125 filled with the gas generating agent 126 in the internal space of the housing 110 is a pressurized area having a relatively high airtightness. Ru. The airtightness of the pressure area is realized by caulking and fixing an O-ring 117 between the igniter 116 and the housing 10, and closing of the through hole 147 provided in the separation wall 146 by the sealing tape 145. . In addition, the isolation wall 146 and the housing 1
Since the welding tape 10 and the sealing tape 145 and the separating wall 146 are fixed by welding, it is not necessary to substantially consider the reduction in air tightness due to the welding fixing point. Further, as in the first embodiment, the pressure inside the pressure area is filled with an inert gas, such as argon or helium, as in the first embodiment. The high pressure state is formed, which is higher than the pressure of the filter chamber in which the pressure sensor is disposed and the outside of the gas generator 100). The filter chamber in which the filter 160 is disposed is a non-pressurized region because the inside and the outside of the housing 110 are in communication with each other through the gas discharge port 135.

  The inert gas thus filled to form the high pressure state is generally well held in the pressurized area due to the airtightness in the above-described pressurized area. For this reason, it is possible to effectively suppress external air with moisture coming from the outside of the pressure area from entering the filling chamber 125 in the pressure area, whereby the moisture proof performance of the gas generator 100 is maintained high. Also, temporarily, if the air tightness due to the O ring 117 etc. decreases with time due to the aged deterioration of the O ring 117 etc, or even if the aged deterioration does not occur, the physical airtight performance of the O ring 117 etc. Even when the inert gas filled in the pressurized area leaks to the outside due to limitations etc., the degree of leakage is so small that the inert gas can be held in the pressurized area for a relatively long period of time. It is possible to suppress the ingress of external air accompanied by moisture from the outside, and maintain the high moisture proof performance of the gas generator 100. Furthermore, by placing the filling chamber 125 filled with the gas generating agent 126 in a high pressure atmosphere, it is possible to increase the burning rate of the gas generating agent 126.

  Further, the gas generator 100 configured in this way is also assembled in the assembly chamber 80 filled with the inert gas shown in FIG. 2 in the same manner as the gas generator 1 of the first embodiment. The pressure area can be formed therein. Therefore, the gas generator 100 also does not require an additional moisture-proof member (such as an O-ring or a gasket), a special moisture-proof member, or the like in order to achieve the above-described suitable moisture-proof performance. As a result, there is no need for these quality controls or additional assembly steps to properly attach them to the gas generator, and according to the technique of this embodiment, the load of the assembly process is not increased unnecessarily. It is possible to preferably damp the gas generating agent 126 and the like.

Example 3
A gas generator 200 according to a third embodiment will be described based on FIG. FIG. 6 is an axial sectional view of the gas generator 200. As shown in FIG. The same reference numerals are given to parts substantially the same as the constituent parts of the gas generator 100 of the second embodiment among the parts constituting the gas generator 200, and the detailed description thereof will be omitted. In the gas generator 200, the inner space of the housing 110 is divided by the separation wall 146 into two spaces, that is, a space on the igniter 116 side and a space on the end wall 148 side. In the present embodiment, the separating wall 146 is not necessarily welded to the housing 110. Further, the through holes 147 provided in the separation wall 146 are not blocked by the seal member such as the seal tape 145 as shown in the gas generator 100 of the second embodiment. Therefore, the internal space itself of the housing 110 is in a state of substantially communicating with the outside thereof.

Here, in a space on the igniter 116 side of the housing 110, a canister 225 which is a filling container formed of a thin film of aluminum is disposed. The canister 225 has a peripheral wall portion 225a and a bottom surface portion 225d, and the peripheral wall portion 225a and the bottom surface portion 225d are formed of a sheet of aluminum thin film. Further, the top surface portion 225b formed of another sheet-like aluminum thin film is fixed by caulking to the end of the peripheral wall portion 225a of the aluminum thin film including the peripheral wall portion 225a and the bottom surface portion 225d. The portion to be wound and fixed is referred to by reference numeral 225c. In addition, at the time of formation of the tightening and fixing portion 225c, a known sealing agent is applied between the two aluminum thin films. The sealing agent corresponds to the predetermined interposed member of the present invention, and when it is hardened, the predetermined airtightness is given to the canister 225. Further, since the two aluminum thin films are wound and fixed, the hardened sealing agent is subjected to an external force, which contributes to the formation of a predetermined airtightness. The airtightness between the aluminum thin films by the hardened sealing agent is not as high as the airtightness by welding and fixing with the seal tape 45 in the first embodiment.

  The inner space of the canister 225 is filled with the gas generating agent 226, and the top surface portion 225b thereof is opposed to the ignition portion of the igniter 116, and the peripheral wall portion 225a is extended in the longitudinal direction of the housing 110. The canister 225 is disposed in the inner space of the housing 110 such that the bottom surface portion 225 d faces the through hole 147. Here, in the gas generator 200, the internal space of the canister 225 is a pressurized area having a relatively high airtightness. The airtightness of the pressure area is realized by the clamp fixing portion 225c accompanied by the application of the sealing agent. Also, as in the first embodiment, by filling the interior of the canister 225 with an inert gas such as argon or helium, the internal pressure becomes high compared to the pressure outside the canister 225. A state has been formed. The internal space of the housing 110 other than the canister 225 is substantially in communication with the inside and the outside of the housing 110 through the gas discharge port 135, and thus is a non-pressurized area.

  The inert gas thus filled to form the high pressure state is generally well retained in the canister 225 due to the above-mentioned air tightness. For this reason, it is possible to effectively prevent external air with moisture from entering the inside of the canister 225 from the outside of the canister 225, whereby the moisture proof performance of the gas generator 200 can be maintained high. In addition, temporarily, if the airtightness by the tightening and tightening portion 225c decreases with time due to age-related deterioration or the like, or the physical airtightness limit or the like, the filled inert gas is externally Even if it leaks into the tank, the degree of leakage is so small that the inert gas can be retained in the canister 225 for a relatively long period of time, preventing the ingress of external air accompanied by external moisture, and gas generation The moisture proof performance of the vessel 200 can be maintained high.

  Further, the gas generator 200 configured as described above is assembled according to the assembling method shown in FIG. Specifically, FIG. 7 is a flowchart of the assembling method. First, in S201, when assembling the gas generator 200, the components constituting the canister 225, specifically, an aluminum thin film including the peripheral wall portion 225a and the bottom surface portion 225d, and an aluminum thin film including the top surface portion 225b The necessary amount of gas generating agent 226 to be filled into the canister 225 is also carried in while being carried in. When these parts are carried in, the door 81 is closed to seal the assembly chamber 80, and then the assembly chamber 80 is filled with an inert gas to form the above-mentioned high pressure state in the chamber (S202) Processing of The formation of the high pressure state is based on the control of the inflow of the inert gas from the tank 82, as in the process of S102.

  When a high pressure state is formed in the assembly chamber 80, the gas generating agent 226 is filled in the inside of the canister 225 (the recess space formed by the above aluminum thin film and defined by the peripheral wall 225a and the bottom 225d). (Process of S203). When the gas generating agent 226 is filled, the aluminum thin film including the top surface portion 225 b is coated with the above-mentioned sealing agent and fixedly wound and fixed to the other aluminum thin film, thereby sealing the gas generating agent 226 in the canister 225. Perform (processing of S204). Then, after the applied sealant is dried, the canister 225 filled with the gas generating agent 226 is removed from the assembly chamber 80 (processing of S205).

Next, outside the assembly chamber 80, that is, under an atmosphere where a high pressure state is not formed, a space on the side to which the igniter 116 is to be attached in the internal space of the housing 110 (a space on the end wall 148 side and Is the opposite space), the canister 225 is accommodated (processing of S206). Furthermore, the igniter 116 is inserted into the housing 110 and attached to the housing 110 by caulking so that the ignition part of the igniter 116 faces the top surface portion 225b of the canister 225 (processing of S207). When attaching the igniter 116 to the housing 110, the filter 160 and the end wall 148 may already be attached to the housing 110, or the filter 160 etc. may be attached after the igniter 116 is attached to the housing 110. May be When the igniter 116 is operated in the gas generator 200 configured as described above, the combustion product mainly cleaves the top surface portion 225 b to induce the combustion of the gas generating agent 226 in the canister 225. Then, the combustion gas generated by the combustion of the gas generating agent 226 cleaves the bottom surface portion 225 d and is discharged to the outside of the gas generator 200 through the through holes 147 and the filter 160.

  As described above, for the gas generator 200, the canister 225 is filled with the gas generating agent 226 in the assembly chamber 80, and the canister 225 is accommodated in the housing 110, whereby the inert gas is filled and the high pressure is achieved. The pressurized region in which the state is formed can be contained in the gas generator 200. Therefore, the gas generator 200 also does not require an additional moisture-proof member (such as an O-ring or a gasket), a special moisture-proof member, or the like in order to achieve the above-described suitable moisture-proof performance. As a result, there is no need for these quality controls or additional assembly steps to properly attach them to the gas generator, and according to the technique of this embodiment, the load of the assembly process is not increased unnecessarily. It is possible to preferably damp the gas generating agent 226 and the like. Further, since the mounting process of the igniter 116 is performed outside the assembly chamber, the gas generator 200 can be efficiently assembled.

1, 100, 200: gas generator 10, 110: housing 12: diffuser 15, 115: gas outlet 16, 116: igniter 17, 117: O-ring 18, 118: caulking part 20: transfer charge filling chamber 21: Transfer charge 22: first porous plate member 22a: through hole 23: second porous plate member 23a: through hole 25, 125: filling chamber 26, 126, 226: gas generating agent 30: inner cylinder 40: cup shaped member 45, 145, 450: Sealing tape 80: Assembly chamber 81: Door 82: Tank 83: On-off valve 146: Isolation wall 147: Through hole 160: Filter 225: Canister

Claims (8)

An igniter,
A housing for accommodating the igniter, the housing having an outlet connecting the inside and the outside of the housing;
A filling chamber filled with a solid gas generant, wherein the gas generator is disposed at a position where the gas generant can be combusted by the operation of the igniter in the housing;
A gas generator comprising:
A region having a predetermined airtightness with respect to the outside of the predetermined area formed at least in the predetermined area in the housing including at least the filling chamber by being surrounded by the plurality of area definition members; The pressure region is further provided with a high pressure state higher than the pressure outside the region,
The plurality of domain definition members include a seal member which maintains the predetermined airtight state before the igniter is operated and which is split by combustion gas from the gas generating agent generated by the igniter operation. ,
The at least one area defining member and the other area defining member included in the plurality of area defining members are not joined by welding, and a predetermined intervening member disposed between the two area defining members in a state where an external force is applied. Bonded through,
Gas generator. The plurality of region defining members include the housing and the igniter,
The seal member is joined by welding to the housing side,
The igniter is fixed to the housing by interposing the predetermined member which is elastically deformable or plastically deformable with the housing.
The gas generator according to claim 1. The filling chamber is an internal space of a filling container formed by at least two membrane members corresponding to the seal member, which can be cleaved by combustion products generated by the operation of the igniter,
Between the at least two membrane members, a sealing agent which is the predetermined intervening member applied to both membrane members is disposed;
The internal space of the filling container is the pressurized area, and the filling container is disposed in the housing in the state of being formed in the high pressure state,
The gas generator according to claim 1. The high pressure state is formed in the pressurized area by being filled with a predetermined inert gas.
The gas generator according to any one of claims 1 to 3. The housing is formed in a tubular shape, and the discharge port is disposed at one end of the housing,
The igniter is disposed on the other end side of the housing across the filling chamber with respect to the discharge port.
The gas generator according to any one of claims 1 to 4. Only the filling chamber is the pressing area,
The gas generator according to any one of claims 1 to 5. An igniter and a housing containing the igniter, the housing having an outlet connecting the inside and the outside of the housing, and gas generation by combustion products generated by the operation of the igniter in the housing A method of assembling a gas generator for burning an agent,
The housing is a predetermined area including at least a filling area to be filled with the gas generating agent, and the gas generating agent generated by the operation of the igniter with respect to the outside of the predetermined area. The housing has a sealed area divided by a seal member which is split by the combustion gas inside the housing,
The assembling method is
Preparing the igniter, the housing, and the gas generating agent in an assembly chamber in which a predetermined high pressure state higher than atmospheric pressure is formed;
Filling the gas generating agent into the filling area of the housing in the assembly chamber in which the high pressure state is maintained;
In the assembly chamber in which the high pressure state is maintained, at a position on the sealing area side where the gas generating agent filled in the filling area in the housing can be burned by the operation of the igniter. Mounting the igniter relative to the housing to form a predetermined air tightness in the sealing area;
A method of assembling a gas generator, including: An igniter and a housing containing the igniter, the housing having an outlet connecting the inside and the outside of the housing, and gas generation by combustion products generated by the operation of the igniter in the housing A method of assembling a gas generator for burning an agent,
The assembling method is
In the assembly chamber in which a predetermined high pressure state higher than atmospheric pressure is formed, the gas generating agent and a filled container formed by at least two membrane-like seal members cleavable by the combustion product are provided. Preparing the filling vessel, wherein the filling vessel is a filling area whose internal space is filled with the gas generating agent;
Filling the gas generating agent into the filling container in the assembly chamber in which the high pressure state is maintained;
The filling container is sealed by applying a sealing agent between the at least two membrane-like sealing members after the filling step in the assembly chamber in which the high pressure state is maintained. A sealing step to form a predetermined airtight state inside the
Taking out the filling container in which the predetermined airtight state is formed out of the assembly chamber;
Mounting the igniter relative to the housing at a position such that the housing accommodates the filling container outside the assembly chamber and then the filling container is cleavable by operation of the igniter;
A method of assembling a gas generator, including:

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