JP4887095B2 - Gas generator and manufacturing method thereof - Google Patents

Description

  The present invention relates to a gas generator suitable for a seat belt retractor and a manufacturing method thereof.

  In the gas generator for the seat belt retractor, the gas generating agent is disposed in contact with the igniter. However, the amount of the gas generating agent to be used is small and is in contact with the igniter while being accommodated in the cup.

  The igniter is attached to the igniter collar, and a cup is attached to the igniter collar. An igniting agent is disposed on the working part of the igniter and is covered with a cover, but the working part protrudes from the igniter collar. Therefore, when the cup filled with the gas generating agent is attached to the igniter collar, the protruding operating portion is attached so as to be pushed toward the gas generating agent. For this reason, there is a possibility that the performance of the gas generator may change due to the gas generating agent being crushed or deformed and broken due to the contact between the operating part and the gas generating agent.

  Patent Document 1 discloses a gas generator that can be used in a seat belt device, and FIGS. 16 to 21 show a method of assembling the gas generator shown in FIG. In the gas generator shown in FIG. 15, the gas generating agent molded body 50 is filled in the cup 40. This gas generator inserts the combustion control member 30 into the cup 40 with the bottom plate portion 42 of the cup 40 down (FIG. 18); in this state, the chute is cured from the gap between the cup 40 and the combustion control member 30. Filling the molded body 50 with the tool 150 (FIG. 19); After filling a predetermined amount of the molded body 50, the chute jig 150 is removed (FIG. 20) and the igniter assembly is covered (FIG. 21). It is assembled through the process.

In this assembly method, it is necessary to prepare the chute jig 150, and when filling the molded body 50 into the cup 40, the gas generating agent is placed in the gap between the cup opening end and the combustion control member 30. Filling is difficult because it will fill. Moreover, since the diameter of the combustion control member 30 becomes smaller as it goes to the lower end (see FIG. 19), it is difficult to confirm whether or not the molded body 50 has entered the back (bottom part) of the cup 40 uniformly.
JP 2006-136861 A

  It is an object of the present invention to provide a gas generator having a simple structure and easy to assemble and a method for manufacturing the same.

[Claim 1]
The invention of claim 1 is a solution to the problem.
An igniter assembly in which an igniter having an ignition part is fixed to an igniter collar, and a gas generating agent storage chamber in which a gas generating agent is stored. The ignition part protrudes into the gas generating agent storing chamber. A gas generator located so that
The gas generating agent storage chamber includes a combination of a cup member and a cylindrical member,
The cup member and the cylindrical member are in a state in which the inner peripheral surface of the cup member and the outer peripheral surface of the cylindrical member are in contact with or close to each other, and the bottom surface of the cup member and the upper end side opening of the cylindrical member Provided is a gas generator in which the parts are combined in contact or close to each other, and the opening of the cup member is fixed to the igniter collar.

  When the cylindrical member is used together with the cup member to form the peripheral surface and the ceiling surface of the gas generating agent storage chamber, the gas generating agent storage chamber with the ceiling surface opened is formed by first arranging the cylindrical member. The gas generating agent storage chamber in a sealed state is formed by covering the cup member thereon. As described above, when the gas generating agent is filled in a state where the ceiling surface of the gas generating agent accommodation chamber is opened, a special chute jig as used in Patent Document 1 is not necessary, and the filling operation is also performed. It is easy, and since the gas generating agent is not pushed by the ignition part during the filling operation, the gas generating agent is not crushed or deformed and destroyed.

  Further, by setting the height of the cup member and the cylindrical member to the same extent in advance, if the gas generating agent is filled up to the peripheral edge of the opening on the upper end side of the cylindrical member, the bottom surface after the cup member is covered There is no gap on the side. In the case where such a gap is generated, the filled gas generating agent is moved by external vibration and is crushed or abnormal noise is generated, but such a problem is also prevented. The height of the cylindrical member is preferably adjusted according to the filling amount of the gas generating agent.

  Since the cylindrical member only needs to have a strength that can secure a space in which the gas generating agent can be temporarily filled, the thickness can be reduced. For this reason, even when the cup member is covered to form a double wall structure, the outer diameter can be made almost the same as that of the cup member alone.

  The cup member and the cylindrical member may be in a state where they are in contact with each other, or may be in a state where a slight gap is opened, but it is preferable in terms of miniaturization that the cup member and the cylindrical member are in a contact state. Further, it is preferable that the bottom surface of the cup member and the opening on the upper end side of the cylindrical member are in contact with each other because the cylindrical member can be fixed while being pressed downward on the bottom surface.

  In addition, the well-known thing made from metals, such as aluminum and stainless steel, can be used for a cup member, The thing by which the whole is destroyed by the action | operation of an igniter assembly, the thing by which only a surrounding surface or a bottom is destroyed, a specific part ( For example, it may be any one that is destroyed in a closed hole or a pre-formed fragile portion.

[Claim 2]
According to a second aspect of the present invention, there is provided the gas generator according to the first aspect, wherein the cylindrical member is combusted, deformed, ruptured or melted by the operation of the igniter assembly. I will provide a.

  As described above, by making the cylindrical member burn, deform, rupture (including breakage and rupture) or melt, the combustion gas generated by burning the gas generating agent may break the cup member and release it. There is no hindrance. The cylindrical member itself may be formed of a gas generation source such as a gas generating agent, and the combustion gas generated by being ignited by the igniter assembly may be used.

  The cylindrical member may be made of an aluminum foil having a thickness of about 50 μm and a resin having a strength comparable to that of the aluminum foil.

[Claim 3]
According to a third aspect of the present invention, as the other means for solving the problem, the cylindrical member has a large number of holes on a peripheral surface, and the hole diameter is smaller than the gas generating agent. A gas generator according to 1 or 2 is provided.

  When the cylindrical member has a large number of holes on the peripheral surface, when the gas generating agent burns by the operation of the igniter assembly and gas is generated, the gas passes through the holes and destroys the cup member. And released. For this reason, when the cylindrical member has a large number of holes on the peripheral surface, the cylindrical member can be made not to be burned, deformed, ruptured or melted by the operation of the igniter assembly. It may be burned, deformed, ruptured or melted by operation of the vessel assembly.

[Claim 4]
The invention of claim 4 is a means for solving other problems.
It is a manufacturing method of the gas generator in any one of Claims 1-3,
Covering the tubular member so as to surround the igniter;
Filling the gas generating agent from the upper end opening of the tubular member;
Covering the cylindrical member with a cup member, and fixing the periphery of the opening of the cup member to an igniter collar;
The manufacturing method of the gas generator which has this is provided.

  By covering the igniter so as to surround the igniter, a gas generating agent storage chamber having an open ceiling surface (upper end opening) is formed, and gas is easily generated from the opening. The agent can be filled. For this reason, the filling operation of the gas generating agent is easy, and it is easy to check the working state.

  In the next step, cover the cylindrical member with a cup member, close the open ceiling surface with the bottom surface of the cup member, and fix the periphery of the opening of the cup member to the igniter collar, thereby generating gas in a sealed state The agent generating chamber is filled with the gas generating agent.

[Claim 5]
According to a fifth aspect of the present invention, as another means for solving another problem, in the step of covering the tubular member so as to surround the igniter, the igniter collar has an opening peripheral edge on the lower end side of the tubular member. The manufacturing method of the gas generator according to claim 4, wherein the opening side of the cup member is fitted into the annular groove and then the opening side is fixed in the next step.

  If the cylindrical member and the opening side of the cup member are fitted together in the annular groove formed in advance in this way, positioning and fixing are easy, and the operation is simplified. The fixing strength is further increased by forming a flange on the opening side of the cup member and fitting the flange into the annular groove.

[Claim 6]
According to a sixth aspect of the present invention, as another means for solving another problem, in the step of covering the cylindrical member with the cup member, the inner peripheral surface of the cup member and the outer peripheral surface of the cylindrical member are in contact with each other, and The manufacturing method of the gas generator of Claim 4 or 5 made to contact the bottom face of a cup member and the upper end side opening part of the said cylindrical member.

  Since the cup member and the cylindrical member are brought into contact with each other as described above, the overall volume can be further reduced, and the cylindrical member is pressed from above by the bottom surface of the cup member. The fixing strength of the member is increased.

[Claim 7]
The invention of claim 7 is a solution to the problem.
An igniter assembly in which an igniter having an ignition part is fixed to an igniter collar, and a gas generating agent storage chamber in which a gas generating agent is stored. The ignition part protrudes into the gas generating agent storing chamber. A gas generator located so that
The gas generating agent containing chamber includes a combination of a first cup member and a second cup member,
The first cup member and the second cup member are arranged so that the first cup member has a bottom surface side having a recess on the igniter side, and the second cup member is covered with the first cup member. And
The inner peripheral surface of the second cup member and the outer peripheral surface of the first cup member are in contact with or close to each other, and the bottom surface of the second cup member and the upper end side opening of the first cup member are in contact with each other. Are combined in close proximity to each other, and an opening of the second cup member is fixed to the igniter collar.

  When using the second cup member together with the first cup member to form the peripheral surface and ceiling surface of the gas generating agent storage chamber, first, preferably a recess having the same shape as the outer shape of at least the ignition part of the igniter assembly By placing the first cup member having the bottom surface on the igniter from the bottom surface side, a gas generating agent containing chamber with the ceiling surface opened is formed, and the second cup member is covered thereon. A gas generating agent storage chamber in a sealed state is formed. As described above, when the gas generating agent is filled in a state where the ceiling surface of the gas generating agent accommodation chamber is opened, a special chute jig as used in Patent Document 1 is not necessary, and the filling operation is also performed. Further, the gas generating agent is not pushed by the ignition portion during the filling operation, and therefore the gas generating agent is not crushed.

  Moreover, if the gas generating agent is filled up to the peripheral edge of the opening on the upper end side of the first cup member by setting the heights of the second cup member and the first cup member to the same extent in advance, the second cup member No voids are generated on the bottom side after covering. In the case where such a gap is generated, the filled gas generating agent is moved by external vibration and is crushed or abnormal noise is generated, but such a problem is also prevented. The height of the first cup member is preferably adjusted according to the filling amount of the gas generating agent.

  The first cup member has a concave portion that matches or approximates the outer shape of the portion including at least the ignition portion of the igniter assembly to be covered on the bottom surface. Since there is an operation of filling the gas generating agent after fitting the bottom face side of the first cup member into the igniter assembly, the recess on the bottom face of the first cup member is fitted into the igniter assembly. In some cases, the shape and depth may be such that the first cup member can be stationary so as not to impair the filling workability of the gas generating agent.

  Moreover, since the 1st cup member should just have the intensity | strength which can ensure the space which can be temporarily filled with a gas generating agent, thickness can also be made thin. For this reason, even when the second cup member is covered to form a double wall structure, the outer diameter can be made almost the same as that of the second cup member alone.

  The second cup member and the first cup member may be in contact with each other or may be in a state where a slight gap is opened, but the second cup member and the first cup member are in contact with each other. It is preferable in terms of downsizing, and when the bottom surface of the second cup member and the opening on the upper end side of the first cup member are in contact with each other, the first cup member is fixed in a state of being pressed downward on the bottom surface. This is preferable because it is possible.

  The second cup member may be a known metal made of aluminum, stainless steel, or the like, and the whole is destroyed by the operation of the igniter assembly, only the peripheral surface or the bottom is destroyed, Any of those broken at a specific site (for example, a closed hole or a weakened portion formed in advance) may be used.

[Claim 8]
According to an eighth aspect of the present invention, as another means for solving the problem, the first cup member is combusted, deformed, ruptured or melted by the operation of the igniter assembly. Provide a bowl.

  As described above, by burning, deforming, rupturing (including breaking and breaking) or melting the first cup member, the combustion gas generated by burning the gas generating agent breaks and releases the cup member. Is not inhibited. The first cup member itself may be formed of a gas generating source such as a gas generating agent, and the combustion gas generated by being ignited by the igniter assembly may be used.

  As the first cup member, an aluminum foil having a thickness of about 50 μm and a resin made of a resin having the same strength as the aluminum foil can be used.

[Claim 9]
According to a ninth aspect of the present invention, as another means for solving the problem, the first cup member has a large number of holes on a peripheral surface, and the hole diameter is smaller than the gas generating agent. Item 7. A gas generator according to Item 7 or 8 is provided.

  When the first cup member has a large number of holes on the peripheral surface, when the gas generating agent is burned by the operation of the igniter assembly and gas is generated, the gas passes through the holes and passes through the second cup. The member is destroyed and released. For this reason, when the first cup member has a large number of holes on the peripheral surface, the first cup member can be prevented from burning, deforming or melting even by the operation of the igniter assembly. It may be burned, deformed or melted by the operation of the vessel assembly.

[Claim 10]
The invention of claim 10 is another means for solving the problems,
It is a manufacturing method of the gas generator in any one of Claims 7-9,
Covering the igniter with the bottom side of the first cup member having a recess on the bottom surface so as to surround the igniter;
Filling the gas generating agent from the upper end opening of the first cup member;
Covering the first cup member with a second cup member and fixing the periphery of the opening of the second cup member to the igniter collar;
The manufacturing method of the gas generator which has this is provided.

  By covering the bottom surface side of the first cup member on the igniter so as to surround the igniter, a gas generating agent storage chamber in which the ceiling surface (upper end side opening) is opened is formed, The gas generating agent can be easily filled from the opened portion. For this reason, the filling operation of the gas generating agent is easy, and it is easy to check the working state. In addition, the manufacturing method including the process which covers what filled the gas generating agent in the 1st cup member which has a recessed part in the bottom face previously on an igniter may be sufficient.

  In the next step, covering the first cup member with the second cup member, closing the open ceiling surface with the bottom surface of the second cup member, and fixing the periphery of the opening of the second cup member to the igniter collar As a result, the gas generating agent is filled in the sealed gas generating agent storage chamber.

[Claim 11]
In another aspect of the invention, the opening side of the second cup member is fitted into the annular groove of the igniter collar, and then the opening side is fixed. A method of manufacturing the described gas generator is provided.

  If the opening side of the second cup member is fitted in the annular groove formed in advance in this way, positioning and fixing are easy, and the operation is simplified. In addition, the fixing strength is further increased by forming a flange on the opening side of the second cup member and fitting the flange into the annular groove.

[Claim 12]
According to a twelfth aspect of the present invention, as another means for solving the problem, in the step of covering the first cup member with the second cup member, the inner peripheral surface of the second cup member and the outer peripheral surface of the first cup member are in contact with each other. The manufacturing method of the gas generator of Claim 10 or 11 which is made to contact the bottom face of the said 2nd cup member, and the upper end side opening part of the said 1st cup member.

  By bringing the second cup member and the first cup member into contact with each other as described above, the overall volume can be further reduced, and the first cup member can be pressed from above on the bottom surface of the second cup member. Therefore, the fixing strength of the first cup member is increased.

  The gas generator according to the present invention is easy to assemble including a filling operation of the gas generating agent, and the gas generating agent is not crushed, broken or deformed during the assembling operation.

<First gas generator>
FIG. 1 is a longitudinal sectional view showing a gas generator 10 of the present invention, and shows a gas generator used for a seat belt retractor. The gas generator 10 includes a combination of an igniter assembly 20 and a gas generating agent storage chamber 40.

  The igniter assembly 20 is obtained by fixing an electric igniter 21 to an igniter collar 31. The igniter 21 has a pair of conductive pins 23 integrated with an eyelet 22, and the conductive pins 23 can be electrically connected by a bridge wire 24. A part of the pair of conductive pins 23 is surrounded by a molding member 25 made of resin. The eyelet 22 is in a state in which one end face (bridge wire 24 side) is exposed from the molding member 25.

  A cylindrical charge holder 26 is attached on the molding member 25 so as to surround the eyelet 22, and a cavity 27 is formed inside and filled with an ignition powder 28. The cavity 27 is closed by a lid member 29.

  The igniter 21 is attached to a metal igniter collar 31. In FIG. 1, the igniter 21 is fixed by caulking the annular portion 32 formed in the igniter collar 31 to hold the molding member 25.

  A flange 42 formed at the opening of the cup member 41 is fitted into the annular groove 33 formed in the igniter collar 31. A cylindrical member 43 is disposed inside the cup member 41. The cylindrical member 43 has a lower end fitted in the annular groove 33, an upper end is in contact with the ceiling surface of the cup member 41, and an outer peripheral surface is in contact with the inner peripheral surface of the cup member 41. The cup member 41 and the cylindrical member 43 are fixed together by caulking the peripheral wall 33a of the annular groove 33.

  A space in the cup member 41 and the cylindrical member 43 serves as a gas generating agent storage chamber 40 and is filled with a required amount of the gas generating agent 44.

  The cylindrical member 43 is preferably one that easily burns, deforms or melts by the high temperature gas generated by the ignition and combustion of the gas generating agent 44 by the operation of the igniter 21, and is approximately 50 μm thick aluminum foil or the like. A resin made of a strong resin (nylon 6-12, nylon 6-6, etc.) can be used. However, a weak part (groove, scratch, thin part, etc.) is formed on the bottom surface of the cup member 41, or a hole closed with a metal foil is formed, and the bottom surface is cleaved by the pressure of the high-temperature gas. In the case of a structure for discharging a high-temperature gas therefrom, the cylindrical member 43 may not be burned, deformed or melted by a flame, gas, or the like generated by the operation of the igniter 21.

  Moreover, a weak part (a groove, a scratch, a thin part, etc.) is formed on the peripheral surface of the cup member 41, or a hole closed with a metal foil is formed, and the peripheral surface is made by the pressure of the high-temperature gas. In the case of a structure that is cleaved and releases high temperature gas therefrom, the cylindrical member 43 has a plurality of holes on the peripheral surface (holes with a diameter smaller than the minimum diameter portion of the gas generating agent 44), The peripheral surface may have a fragile portion.

  Next, the operation of the gas generator 10 shown in FIG. 1 will be described. In addition, the bottom surface of the cup member 41 is destroyed during operation.

  When the ignition current is transmitted to the conductive pin 23, the igniter 21 is activated, and flame, gas, etc. are generated by the combustion of the ignition powder 28. These flames ignite and burn the gas generating agent 44 in the gas generating agent storage chamber 40 to generate a working gas. This working gas breaks the ceiling surface of the cup member 41 and is released upward. For this reason, there is no problem in operation even if the cylindrical member 43 remains as it is.

<The manufacturing method of the 1st gas generator>
Next, a method for manufacturing the gas generator shown in FIG. 1 will be described with reference to FIGS. 2 (A), 2 (B), and 2 (C). FIG. 2 is a longitudinal sectional view showing the manufacturing process.

  As shown in FIG. 2A, the cylindrical member 43 is placed so as to contact the outer peripheral surface of the molding member 25 of the igniter assembly 20, and the periphery of the opening is brought into contact with the annular groove 33. Through this step, the charge holder 26 is surrounded by the cylindrical member 43.

  Next, as shown in FIG. 2B, the gas generating agent 44 is filled from the upper end opening of the cylindrical member 43. It is preferable to adjust the height of the cylindrical member 43 according to the filling amount of the gas generating agent 44 so as to be filled up to the opening peripheral edge 43a on the upper end side. By doing in this way, when the cup member 41 is covered on the cylindrical member 43 in the next step shown in FIG. 2C, the gas generating agent 44 filled in the cylindrical member 41 and the cup member bottom surface 41a. There is no gap between the two.

  Next, as shown in FIG. 2C, the cup member 41 is put on the cylindrical member 43, and the flange 42 of the cup member 41 is fitted into the annular groove 33. At this time, the inner peripheral surface of the cup member 41 and the outer peripheral surface of the cylindrical member 43 are in contact with each other, and the cup member bottom surface 41 a and the opening peripheral edge 43 a on the upper end side of the cylindrical member 43 are in contact with each other. By doing in this way, since the cylindrical member 43 is pressed from the upper and lower sides with the cup member bottom face 41a and the annular groove 33, the cylindrical member 43 is firmly fixed.

  Thereafter, the flange 42 is fixed by caulking the circumferential wall 33a of the annular groove. By doing in this way, while the cup member 41 is fixed, since the surrounding surface of the cup member 41 presses the surrounding surface of the cylindrical member 43, the fixing strength of the cylindrical member 43 is also raised.

  According to the manufacturing method of the present invention, unlike the prior art, the ignition part and the gas generating agent do not come into strong contact with each other, so that the gas generating agent is not crushed during the manufacturing. Further, since the gas generating agent 44 can be filled from the opening on the upper end side of the cylindrical member 43, the filling operation itself is easy and the filling state can be easily confirmed. Furthermore, when the cup member is covered by adjusting the height of the cylindrical member according to the filling amount of the gas generating agent and adjusting the height of the cup member according to the height of the cylindrical member, It is no longer possible to create a gap in which the gas generating agent moves between the bottom surface of the cup member and the filled gas generating agent.

<Second gas generator and manufacturing method thereof>
FIG. 3 is a longitudinal sectional view showing a gas generator 100 according to another embodiment of the present invention, which shows a gas generator used in a seat belt retractor, and FIG. 4 is a gas generator shown in FIG. It is a longitudinal cross-sectional view which shows the manufacturing process of a container.

  The gas generator 100 shown in FIG. 3 has the same structure as the gas generator 10 shown in FIG. 1 except that the first cup member 111 is used instead of the cylindrical member 43 shown in FIG. The same number as FIG. 1 means that it is the same component, and the cup member 41 of FIG. 1 and the 2nd cup member 41 of FIG. 3 differ only in a name.

  The first cup member 111 has a concave portion 112 on the bottom surface side, and the concave portion 112 is in contact with or close to the annular portion 32 crimped to the molding member 25 by contacting the charge holder 26 and the lid member 29. It is a shape that can be covered in a state. A space in the second cup member 41 and the first cup member 111 serves as a gas generating agent storage chamber 40 and is filled with a required amount of the gas generating agent 44.

  The first cup member 111 is preferably one that easily burns, deforms or melts by the high temperature gas generated by the ignition and combustion of the gas generating agent 44 by the operation of the igniter 21, and is approximately the same as an aluminum foil having a thickness of about 50 μm. Those made of a resin having the following strength (nylon 6-12, nylon 6-6, etc.) can be used.

  Next, a manufacturing method will be described. As shown in FIG. 4A, the igniter assembly 20 is covered with the recess 112 of the first cup member 111 from above. Thereafter, as shown in FIG. 4B, the gas generating agent 44 is filled from the opening of the first cup member 111. It is preferable that the height of the first cup member 111 is adjusted according to the filling amount of the gas generating agent 44 so as to be filled up to the opening peripheral edge 113 on the upper end side. In this way, when the second cup member 41 is put on the first cup member 111 in the next step shown in FIG. 4C, the gas generating agent 44 filled in the first cup member 111 and No gap is generated between the second cup member bottom surface 41a.

  Thereafter, as shown in FIG. 4C, the first cup member 111 is covered with the second cup member 41, and the flange 42 of the second cup member 41 is fitted into the annular groove 33. At this time, the inner peripheral surface of the second cup member 41 and the outer peripheral surface of the first cup member 111 are in contact with each other, and the second cup member bottom surface 41a and the opening peripheral edge 113 on the upper end side of the first cup member 111 are in contact with each other. To. By doing in this way, since the 1st cup member 111 is pressed from the upper and lower sides with the 2nd cup member bottom face 41a and the cover member 29, the 1st cup member 111 is fixed firmly.

  Thereafter, the flange 42 is fixed by caulking the circumferential wall 33a of the annular groove. By doing in this way, while the 2nd cup member 41 is fixed, since the surrounding surface of the 2nd cup member 41 presses the surrounding surface of the 1st cup member 111, the fixation strength of the 1st cup member 111 is also raised. It is done.

  4 (A) and 4 (B), after the first cup member 111 previously filled with a required amount of the gas generating agent 44 is placed on the igniter assembly 20, the process shown in FIG. 4 (C) is performed. You may transfer to an assembly process.

The longitudinal cross-sectional view of the gas generator of this invention. The longitudinal cross-sectional view for demonstrating the manufacturing process of the gas generator of FIG. The longitudinal cross-sectional view of the gas generator of other embodiment of this invention. FIG. 4 is a longitudinal sectional view for explaining a manufacturing process of the gas generator of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Gas generator 20 Igniter assembly 21 Igniter 26 Charge holder 31 Igniter collar 41 Cup member 42 Flange 43 Cylindrical member 44 Gas generating agent

Claims (11)

An igniter assembly in which an igniter having an ignition part is fixed to an igniter collar, and a gas generating agent storage chamber in which a gas generating agent is stored. The ignition part protrudes into the gas generating agent storing chamber. A gas generator located so that
The gas generating agent storage chamber includes a combination of a cup member and a cylindrical member,
The cylindrical member has a large number of holes on the peripheral surface, and the hole diameter is smaller than the gas generating agent,
The cup member and the cylindrical member are in a state in which the inner peripheral surface of the cup member and the outer peripheral surface of the cylindrical member are in contact with or close to each other, and the bottom surface of the cup member and the upper end side opening of the cylindrical member A gas generator in which the parts are combined in contact with each other or close to each other, and the opening of the cup member is fixed to the igniter collar.   The gas generator according to claim 1, wherein the cylindrical member is combusted, deformed, ruptured or melted by the operation of the igniter assembly. A method for producing a gas generator according to claim 1 or 2 ,
Covering the tubular member so as to surround the igniter;
Filling the gas generating agent from the upper end opening of the tubular member;
Covering the cylindrical member with a cup member, and fixing the periphery of the opening of the cup member to an igniter collar;
The manufacturing method of the gas generator which has this. In the step of covering the igniter so as to surround the igniter, the peripheral edge of the opening on the lower end side of the cylindrical member is fitted into the annular groove of the igniter collar, and in the next step, the cup member is inserted into the annular groove. The manufacturing method of the gas generator of Claim 3 which fixes the said opening part side, after inserting the opening part side. In the step of covering the cylindrical member with the cup member, the inner peripheral surface of the cup member and the outer peripheral surface of the cylindrical member are in contact with each other, and the bottom surface of the cup member and the upper end side opening of the cylindrical member are in contact with each other. The method for producing a gas generator according to claim 3 or 4 , wherein the gas generator is manufactured. An igniter assembly in which an igniter having an ignition part is fixed to an igniter collar, and a gas generating agent storage chamber in which a gas generating agent is stored. The ignition part protrudes into the gas generating agent storing chamber. A gas generator located so that
The gas generating agent containing chamber includes a combination of a first cup member and a second cup member,
The first cup member and the second cup member are covered with the recess so that the first cup member has a recess having the same shape as the outer shape of the igniter, and the bottom side is the igniter side. disposed Te, the second cup member is placed over the said first cup member,
The inner peripheral surface of the second cup member and the outer peripheral surface of the first cup member are in contact with or close to each other, and the bottom surface of the second cup member and the upper end side opening of the first cup member are in contact with each other. Are combined in a state of being close to each other, and the opening of the second cup member is fixed to the igniter collar. The gas generator according to claim 6 , wherein the first cup member is combusted, deformed, ruptured or melted by operation of the igniter assembly. The gas generator according to claim 6 or 7 , wherein the first cup member has a large number of holes on a peripheral surface, and the hole diameter is smaller than the gas generating agent. A method of manufacturing a gas generator according to any one of claims 6-8,
Covering the igniter with the bottom side of the first cup member having a recess on the bottom surface so as to surround the igniter;
Filling the gas generating agent from the upper end opening of the first cup member;
Covering the first cup member with a second cup member and fixing the periphery of the opening of the second cup member to the igniter collar;
The manufacturing method of the gas generator which has this. The manufacturing method of the gas generator of Claim 9 which fixes the said opening part side, after fitting the opening part side of the said 2nd cup member in the annular groove which the said igniter collar has. In the step of covering the first cup member with the second cup member, the inner peripheral surface of the second cup member and the outer peripheral surface of the first cup member are in contact, and the bottom surface of the second cup member and the first cup The manufacturing method of the gas generator of Claim 9 or 10 made to contact the upper end side opening part of a member.

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