JP2020040590A - Mounting structure of gas generator - Google Patents

Abstract

To provide a mounting structure of a gas generator capable of easily assembling the gas generator and reducing machining costs after guaranteeing quality.SOLUTION: A mounting structure 100 of a gas generator includes: a gas generator 10 to be a micro gas generator (MGG); a module pipe 30; and an engaging member 20 which assembles the gas generator 10 to the module pipe 30. The engaging member 20 is formed into a U-shape in a plan view and has an engaging section 7 and an engaging section 8 and a connection section 9 for connecting one end of the engaging section 7 to one end of the engaging section 8. Each of the engaging section 7 and the engaging section 8 is formed to have the other end of a size engaged with an engaged section 4 for a pipe and have a shape (tapered shape) which becomes thinner toward the other end but becomes thicker in an axial direction than the size of a hole section 1 in a halfway section.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gas generator mounting structure used for a safety device such as an automobile.

  2. Description of the Related Art Conventionally, from the viewpoint of protection of occupants of automobiles and the like, seat belt devices and airbag devices have become widespread. Among them, the seat belt device is provided for the purpose of preventing the occupant from being thrown out of the vehicle or outside due to an impact generated at the time of a collision of a vehicle or the like, and the occupant is seated by winding the belt around the occupant's body. To be fixed.

  In recent years, a seatbelt device having a pretensioner function has been widely used for improving an occupant protection function. The pretensioner function instantly winds up the slack of the seatbelt caused by the thickness of the clothes at the time of collision or immediately before the collision, and enhances the restraining effect of the occupant. This pretensioner function is realized by the seat belt being strongly pulled in by the pressure of gas output from a gas generator called a micro gas generator (MGG).

  Such a gas generator has, for example, a metal housing, and may be fixed by welding the housing to a module pipe (for example, see Patent Literature 1). In addition to the above welding, there is a method of caulking and fixing the gas generator to the module pipe, a method of screwing and fixing the module pipe holding the gas generator to the module cap, and the like. .

JP 2006-504230 A

  However, all of the above-mentioned conventional methods for fixing a gas generator require the use of an advanced pipe expansion technology, and there is a problem that the processing cost is high. When an axial force is applied to a hollow member such as a module pipe to expand the tube, buckling, wall thinning, or cracking tends to occur. As a molding method to solve this problem, there is a method called tubed hydroforming, which does not cause the above-mentioned problem by filling the inside of the module pipe with a gas or liquid and molding it while applying pressure from the inner surface of the pipe to the outside. is there. However, this method has a problem that the molding apparatus is special and the production cost is high, and it is necessary to seal a liquid or gas inside the pipe during molding, and the mold structure becomes complicated. In the case of swaging, there is a problem that swaging occurs. Furthermore, in the case of fixing by screw tightening, the gas generator in contact with the module cap may rotate together with the module cap, and the connector may not be inserted.

  Therefore, an object of the present invention is to provide a gas generator mounting structure that can easily assemble a gas generator and can reduce processing costs while ensuring quality.

(1) A mounting structure of a gas generator according to the present invention is a mounting structure of a gas generator for generating gas by burning an igniter by ignition by an igniter, and has a cylindrical or disk-shaped housing. A gas generator having at least one hole-shaped engaged portion for a gas generator on an outer peripheral wall of the housing, and an opening provided on one end side in an axial direction and into which the gas generator is inserted. A module pipe having a peripheral wall portion in which a hole-shaped pipe engaged portion is formed at a position corresponding to the gas generator engaged portion, and the gas generator is inserted into the module pipe. An engaging member capable of simultaneously engaging both the engaged portion for gas generator and the engaged portion for pipe, wherein the engaging members are spaced apart from each other. 1st engaging part and 2nd engaging part And at least one of the connecting portions connecting one end of the first engaging portion and one end of the second engaging portion has the first engaging portion, and at least the first engaging portion is provided at a distal end portion. The engaged portion for a gas generator is formed at a position facing the first hole portion and the first hole portion penetrating along the thickness direction of the housing. At least the first hole of the second hole penetrating along the thickness direction of the housing is formed, and at least the first hole is formed in a shape capable of press-fitting the first engagement portion. A third hole portion penetrating along the thickness direction of the module pipe, and a pipe-engaging portion penetrating along the thickness direction of the module pipe at a position facing the third hole portion; At least the third hole of the fourth hole And wherein at least the third hole is formed in a shape in which a front end or a rear end of the first engagement portion is engaged.

(2) As another viewpoint, the mounting structure of the gas generator according to the present invention is a mounting structure of a gas generator that generates a gas by burning an igniter by ignition by an igniter, and has a tubular or disc-like shape. A gas generator having at least one hole-shaped engaged portion for a gas generator on an outer peripheral wall portion of the housing, and the gas generator being provided at one end in the axial direction, wherein the gas generator is inserted. Module pipe having an opening to be formed, and a peripheral wall portion in which a hole-shaped pipe engaged portion is formed at a position corresponding to the gas generator engaged portion; and An engaging member capable of simultaneously engaging both the engaged portion for gas generator and the engaged portion for pipe in a state inserted into the module pipe, wherein the engaging members are spaced apart from each other. First engaging portion arranged And at least one of the first and second engaging portions, and a connecting portion that connects one end of the first engaging portion and one end of the second engaging portion. A concave portion is formed on the surface of the joint portion, and the engaged portion for the gas generator is a first hole portion penetrated along the thickness direction of the housing, and a position facing the first hole portion. At least the first hole of the second hole penetrated along the thickness direction of the housing has at least a surface of the first hole corresponding to a position of the recess of the first engagement portion. And a convex portion capable of fitting into the concave portion of the first engaging portion is formed, and the pipe engaged portion is a third hole portion penetrated along a thickness direction of the module pipe. And the thickness direction of the module pipe at a position facing the third hole. At least the third hole portion of the fourth hole portion penetrated along the direction, at least the third hole portion has a shape in which a front end portion or a rear end portion of the first engagement portion is engaged. It may be characterized by being formed.

(3) As another viewpoint, the mounting structure of the gas generator according to the present invention is a mounting structure of a gas generator that generates a gas by burning an igniter by ignition by an igniter, and has a cylindrical or disc-like shape. A gas generator having at least one hole-shaped engaged portion for a gas generator on an outer peripheral wall portion of the housing, and the gas generator being provided at one end in the axial direction, wherein the gas generator is inserted. Module pipe having an opening to be formed, and a peripheral wall portion in which a hole-shaped pipe engaged portion is formed at a position corresponding to the gas generator engaged portion; and An engaging member capable of simultaneously engaging both the engaged portion for gas generator and the engaged portion for pipe in a state inserted into the module pipe, wherein the engaging members are spaced apart from each other. First engaging portion arranged And at least one of the connecting portions connecting one end of the first engaging portion and one end of the second engaging portion, and at least the first engaging portion and the connecting portion, A concave portion is formed at least on a surface of the connection portion, and the engaged portion for the gas generator is a first hole portion penetrated along a thickness direction of the housing, and a position facing the first hole portion. And at least the first hole portion of the second hole portion penetrated along the thickness direction of the housing, and the pipe engaged portion is a second portion penetrated along the thickness direction of the module pipe. A third hole, and at least a third hole of a fourth hole penetrating along a thickness direction of the module pipe at a position facing the third hole, at least the third hole is The leading end or the trailing end of the first engaging portion is engaged with the first engaging portion. And at least on the surface of the third hole portion, which corresponds to the position of the concave portion of the first engaging portion and can be fitted into the concave portion of the first engaging portion. It may be characterized in that a convex portion is formed.

(4) As another viewpoint, the mounting structure of the gas generator according to the present invention is a mounting structure of a gas generator that generates a gas by burning an igniter by ignition by an igniter, and has a cylindrical or disk-like shape. A gas generator having at least one hole-shaped engaged portion for a gas generator on an outer peripheral wall portion of the housing, and the gas generator being provided at one end in the axial direction, wherein the gas generator is inserted. Module pipe having an opening to be formed, and a peripheral wall portion in which a hole-shaped pipe engaged portion is formed at a position corresponding to the gas generator engaged portion; and An engaging member capable of simultaneously engaging both the engaged portion for gas generator and the engaged portion for pipe in a state inserted into the module pipe, wherein the engaging members are spaced apart from each other. First engaging portion arranged And at least one of the first and second engaging portions, and a connecting portion that connects one end of the first engaging portion and one end of the second engaging portion. A projection is formed on the surface of the joining portion, and the engaged portion for the gas generator is located at a position facing the first hole and the first hole penetrating along the thickness direction of the housing. A third hole penetrating along the thickness direction of the module pipe having at least the first hole portion among the second hole portions penetrating along the thickness direction of the housing; A hole, and at least a third hole of a fourth hole penetrating along a thickness direction of the module pipe at a position facing the third hole, at least the third hole is The first engaging portion is shaped to engage with a front end portion or a rear end portion. It may be characterized in that it is implemented.

(5) In the gas generator mounting structure according to the above (4), at least a surface of the first hole portion corresponds to a position of the convex portion of the first engagement portion and the first engagement portion. It is preferable that a concave portion in which the convex portion of the portion can be fitted is formed.

(6) As yet another aspect, a gas generator mounting structure according to the present invention is a gas generator mounting structure for generating gas by burning an igniter by ignition by an igniter, and includes a tubular or disk-shaped structure. A gas generator having at least one hole-shaped engaged portion for a gas generator on an outer peripheral wall portion of the housing, and the gas generator provided on one end side in the axial direction. A module pipe having an opening to be inserted, and a peripheral wall portion having a hole-shaped engaged portion for a pipe formed at a position corresponding to the engaged portion for a gas generator, and the gas generator includes: An engagement member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion in a state inserted into the module pipe, wherein the engaging members are spaced from each other. The first, spaced apart A mating portion, a second engaging portion, and a connecting portion connecting one end of the first engaging portion and one end of the second engaging portion, at least the first engaging portion and the connecting portion; A projection is formed on at least a surface of the connecting portion, and the engaged portion for the gas generator includes a first hole portion penetrated along a thickness direction of the housing and a first hole portion. At least one of the second holes penetrated along the thickness direction of the housing at a position facing each other, and the pipe engaged portion penetrates along the thickness direction of the module pipe. At least the third hole of the third hole formed and the fourth hole penetrating along the thickness direction of the module pipe at a position facing the third hole. The hole has a front end or a rear end of the first engagement portion. The protrusions of the first engagement portion are formed at least on the surface of the third hole and correspond to the positions of the protrusions of the first engagement portion. It may be characterized in that a recess that can be fitted is formed.

  According to the above configurations (1) to (6), since the engaging member is engaged with both the engaged portion for the gas generator and the engaged portion for the pipe, the gas for the module pipe is reduced. The generator can be easily assembled. In addition, when caulking and fixing in the related art, a partially expanded module pipe is required. However, in the present invention, a partially expanded module pipe is not required. There is a cost merit due to a reduction in time, and a reduction in the strength of the module pipe can be suppressed. Further, since there is no occurrence of caulking at the time of caulking and fixing, quality can be secured. Furthermore, since there is no concern that the gas generator rotates together with the module cap at the time of the conventional screw fixing and the connector cannot be inserted, there is a cost merit while maintaining the quality.

  In addition, by making the engaging member strong in the configuration of the above (1) to (6), a shelf plate portion (a gas generating device used in a conventional gas generator) for maintaining the combustion intensity of the gas generator is provided. Therefore, there is a cost advantage due to the reduction in the number of parts. Further, according to the above configurations (1) to (6), the gas generator can be fixed to the module using, for example, a resin component without using a metal component. Therefore, the cost merit and the effect of weight reduction can be obtained.

(A) is a perspective view showing the mounting structure of the gas generator according to the embodiment of the present invention, and (b) is a view of the module pipe (a gas generator inserted) of (a) viewed from the back. (C) is a plan view of the mounting structure of (a). (A) is an engaging member (left side view; right side plan view) used in FIG. 1; (b) and (c) are engaging members according to a modification of (a) (left side is (The right side is a plan view). Each of (a), (b), and (c) is an engagement member (left side view; right side plan view) according to a modification of FIG.

  Hereinafter, a gas generator mounting structure according to an embodiment of the present invention will be described with reference to the drawings. This mounting structure is a mounting structure of a gas generator that generates gas by burning an ignition charge by ignition by an igniter.

  As shown in FIG. 1A, a gas generator mounting structure 100 of the present embodiment includes a gas generator 10, which is, for example, a micro gas generator (MGG), a module pipe 30, and the gas generator 10. And an engagement member 20 to be assembled (fixed) to the pipe 30. In addition, the engagement member 20 is also called a clip.

  The gas generator 10 includes a cylindrical housing 11 having a narrowed portion 14 formed at one end, and holes 1 and 2 penetrating along the thickness direction (radial direction) of the housing 11. It includes an engagement portion 12 and a pair of terminal pins 15 and 16 (see FIG. 1C) to which a predetermined amount of current is supplied. In the gas generator 10, when a vehicle collides, a collision is detected by collision detection means (not shown) provided in the vehicle. An igniter (not shown) provided in the generator 10 operates. The gas generating agent (not shown) is ignited and burned by the flame generated by the operation of the igniter, and generates a large amount of gas. This gas serves as a driving force for a seat belt pretensioner or the like provided adjacent to the gas generator 10. Here, as a modified example, when the gas generator 10 is a cylinder-type inflator, the gas is introduced into an airbag (not shown) provided adjacent to the gas generator 10. Thus, the airbag can be inflated and deployed.

  The module pipe 30 has an opening 33 into which the gas generator 10 is inserted. A throttle portion 34 is formed at an end of the module pipe 30 opposite to the opening 33. As shown in FIG. 1B, in a state where the gas generator 10 is inserted into the module pipe 30, the constricted portion 14 of the gas generator 10 comes into surface contact with the constricted portion 34 of the module pipe 30. The gas generator 10 inserted into the inside 30 is prevented from falling off, and the gas generator 10 is positioned in the axial direction (vertical direction in FIG. 1).

  Further, a hole-shaped pipe engaged portion 3 penetrating along the thickness direction (radial direction) of the module pipe 30 is provided on the peripheral wall portion (cylindrical portion) of the module pipe 30. As shown in FIG. 1B, a hole penetrated along the same thickness direction (radial direction) at a position symmetrical (opposite side) to the pipe engaged portion 3 with respect to the axis of the module pipe 30. The provided pipe engaged portions 4 and 5 are provided.

  The engaging member 20 is formed in a U-shape in plan view, and includes an engaging portion 7 and an engaging portion 8 and a connecting portion 9 that connects one end of the engaging portion 7 and one end of the engaging portion 8. Have. The engaging portion 7 has a size (tapered shape) in which the other end is engaged with the pipe engaged portion 4 and has a thickness (tapered shape) which becomes thinner toward the other end. It is formed so as to be thicker (larger) in the axial direction than the size of the portion 1. Therefore, by press-fitting the engaging portion 7 into the hole 1, the middle part of the engaging portion 7 is press-fitted and fixed to the hole 1. Similarly, the engaging portion 8 is formed in a shape (tapered shape) in which the other end is sized to be engaged with the pipe engaged portion 5 and the thickness decreases toward the other end. The middle part is formed so as to be thicker (larger) in the axial direction than the size of the hole 2 (see the left drawing in FIG. 2A). Therefore, when the engaging portion 8 is press-fitted into the hole 2, an intermediate portion of the engaging portion 8 is press-fitted and fixed to the hole 2.

  Next, a method of attaching the gas generator 10 to the module pipe 30 will be described. First, the gas generator 10 is inserted into the module pipe 30 so that the position of the engaged portion 12 (holes 1 and 2) for the gas generator corresponds to the position of the engaged portion 3 for the pipe. The member 6 is moved in the direction of the arrow shown in FIG. 1A, and the engaging portions 7 and 8 of the engaging member 6 are changed to the engaged portion 3 for the pipe of the module pipe 30 and the gas generation of the gas generator 10. The engaged portion 12 (holes 1 and 2) for the instrument and the engaged portion for another gas generator (engaged portions 4 and 5 for the pipe) are inserted in this order. Thereafter, the other end of the engaging portion 7 is inserted into and engaged with the pipe engaged portion 4, and the other end of the engaging portion 8 is inserted and engaged with the pipe engaged portion 5. . At this time, the connecting portion 9 comes into contact with the engaged portion 12 for the gas generator and cannot proceed, so the engaging member 20 is positioned. Thereby, as shown in FIG. 1C, the gas generator 10 can be assembled to the module pipe 30 by the engagement member 20. In this case, as described above, since the engagement member 20 is formed in a U-shape, the engagement member 20 can be disposed avoiding the pair of terminal pins 15 and 16 in the gas generator 10. It has become.

  As described above, according to the present embodiment, the gas generator 10 can be easily attached to the module pipe 30 by the engagement member 20. In addition, when caulking and fixing in the related art, a step of expanding the module pipe according to the shape of the gas generator is required. However, since this step is not required in the present invention, the processing step of the module pipe 30 is simplified. In addition to cost merit due to reduction in processing time and processing time, reduction in strength of the module pipe 30 can be suppressed. Further, since there is no occurrence of caulking at the time of caulking and fixing, quality can be secured.

  Furthermore, since there is no concern that the gas generator rotates together with the module cap at the time of the above-mentioned conventional screw fastening and the connector cannot be inserted, there is a cost merit while maintaining the quality. Furthermore, by making the engaging member 20 have a pressure resistance, it is possible to improve the pressure resistance of the housing 11 of the gas generator 10 and the module pipe 30.

  In addition, since the engaging member 20 has a high strength, it becomes a shelf portion (a function of a holder for holding the gas generator used in the conventional gas generator) that holds the combustion intensity of the gas generator. In addition, there is a cost advantage due to the reduction in the number of parts. Further, according to the present embodiment, the gas generator can be fixed to the module using, for example, a resin component without using a metal component. The effect can be obtained.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, it should be considered that the specific configuration is not limited to these embodiments. The scope of the present invention is defined by the terms of the claims, rather than the description of the embodiments, and includes all modifications within the scope and meaning equivalent to the terms of the claims. Therefore, a mode in which the above-described embodiment and the following modified examples are appropriately combined is also possible.

  In the above-described embodiment, the engaging member 20 shown in FIGS. 1 and 2A is used. However, the present invention is not limited to this. For example, FIGS. 2B and 2C and FIGS. Any of the engagement members shown in c) may be used. Hereinafter, each engagement member (modification) will be specifically described. In addition, the same part as the engagement member of the above-described embodiment may be denoted by the same reference numeral in the last digit, and the description may be omitted. Further, in the following modified examples, the same components as those in the above embodiment are used unless otherwise specified.

<Modification 1>
The engagement member 40 shown in FIG. 2B has a ∪-shape whose overall shape is slightly different from the engagement member 20 of the above embodiment. Specifically, (1) mainly, the engaging portions 7, 22 of the engaging member 20 of the above embodiment are linear, whereas the engaging portions 47, 48 are arcuate. (2) The engagement of the above-described embodiment is different in that a concave portion 47a and a concave portion 48a are formed on the connecting portion 49 side in the middle of the engaging portion 47 and on the distal end side in the middle of the engaging portion 48, respectively. The member 20 and the engagement member 40 are different.

  Although not shown, the gas generator used in the present modification has two holes similar to the holes 1 and 2 of the gas generator of the above embodiment, and each of these two holes is Are different from the holes 1 and 2 of the gas generator of the above embodiment in that two convex portions corresponding to the positions of the concave portions 47a and 48a are formed in the inside. The two convex portions are formed of an elastic member (for example, rubber or resin), and the engaging portion 47 of the engaging member 40 is provided via the pipe engaged portion of the same module as in the above embodiment. , 48 are deformed when they are inserted into the respective holes of the gas generator in this modification, and finally fitted into the recesses 47a, 48a. Here, the two convex portions may be formed integrally with each of the two hole portions.

  According to the present modification, by using the engaging member 40, the two protrusions in the hole of the gas generator are fitted into the recesses 47a and 48a, so that the gas generator according to the present modification can be more easily formed. Can be fixed to the module. Further, according to the present modification, even if there is a vibration or an impact after the engagement of the engagement member 60, the displacement hardly occurs. Also, in the present modification, the same effects as in the above embodiment can be obtained.

  When the engaging member 40 is made of a flexible material (for example, rubber or resin), the force is applied only in the direction of the dashed line arrow shown in FIG. The shape may be similar to the bent shape. In this state, if the engaging member 40 is inserted into the two holes of the gas generator formed so as to have a slightly smaller interval than in the case of the above-described modification, the original state (the state of FIG. 2B) will be restored. Due to the restoring force, pressure can be applied to the side surface of the hole. Thereby, the gas generator can be further fixed to the module. The same applies to the following modifications.

<Modification 2>
The overall shape of the engaging member 50 shown in FIG. 2C is substantially the same as that of the engaging member 40 shown in FIG. 2B, but one concave portion 59a is provided in the connecting portion 59. This is different from the engagement member 40 in this respect.

  Although not shown, the module used in this modification has a pipe engaged portion similar to the pipe engaged portion 3 of the module pipe 30 of the above-described embodiment. The point different from the engaged portion 3 for the pipe of the module pipe 30 of the above embodiment is that one convex portion corresponding to the position of the concave portion 59a is formed on the upper side of the joint portion. The protrusion corresponding to the position of the recess 59a is formed of an elastic member (for example, rubber or resin). When the engaging member 50 is inserted, the protrusion deforms and finally fits in the recess 59a. Here, the convex portion corresponding to the position of the concave portion 59a may be formed integrally with the engaged portion for a pipe.

  According to the present modification, if the convex portion in the pipe engaged portion is fitted into the concave portion 59a using the engaging member 50, the gas generator in the present modification can be more easily fixed to the module. it can. Further, according to the present modification, even if there is a vibration or an impact after the engagement member 50 is engaged, the displacement is less likely to occur. Also, in the present modification, the same effects as in the above embodiment can be obtained.

<Modification 3>
The overall shape of the engaging member 60 shown in FIG. 3A is substantially the same as that of the engaging member 40 shown in FIG. 2B, except that the O-rings 67a and 68a have the engaging portions 67 and 68. Is different from the engagement member 40 in that it is provided in the middle of.

  The O-rings 67a and 68a need only be attached to the engaging member 60 without taking the trouble of forming irregularities as in other modified examples. The O-rings 67a and 68a may be attached to any position of the engagement member 60.

  According to the present modification, the gas generator according to the present modification can be more easily fixed to the module using the engagement member 60. Further, according to the present modification, even if there is a vibration or a shock after the engagement of the engagement member 60, the vibration or the shock is absorbed by the O-rings 67a and 68a, so that the displacement hardly occurs. Also, in the present modification, the same effects as in the above embodiment can be obtained.

<Modification 4>
The engaging member 70 shown in FIG. 3B has almost the same overall shape as the engaging member 40 shown in FIG. 2B, but instead of the concave portions, the convex portions 77a and 78a are engaged. It differs from the engagement member 40 in that it is provided in the portions 77 and 78.

  Although not shown, the gas generator used in the present modification has two holes similar to the holes 1 and 2 of the gas generator of the above embodiment, and each of these two holes is Are different from the holes 1 and 2 of the gas generator of the above embodiment in that two concave portions corresponding to the positions of the convex portions 77a and 78a are formed in the inside. The projections 77a and 78a are formed of an elastic member (for example, rubber or resin), and are connected to the engagement portions 77 of the engagement member 70 through the pipe engagement portions of the same module as in the above embodiment. , 78 are deformed when inserted into each of the holes of the gas generator in this modification, and finally fitted into the two recesses. Here, the convex portions 77a, 78a may be formed integrally with the engaging portions 77, 78.

  According to the present modification, the gas generator according to the present modification can be more easily fixed to the module using the engaging member 70. Further, according to the present modification, even if there is a vibration or an impact after the engagement member 70 is engaged, the displacement is less likely to occur. Also, in the present modification, the same effects as in the above embodiment can be obtained.

<Modification 5>
The engaging member 80 shown in FIG. 3 (c) has substantially the same overall shape as the engaging member 50 shown in FIG. 2 (c). It differs from the engagement member 50 in that it is provided.

  Although not shown, the module used in this modification has a pipe engaged portion similar to the pipe engaged portion 3 of the module pipe 30 of the above-described embodiment. The difference from the pipe engaged portion 3 of the module pipe 30 of the above embodiment is that one concave portion corresponding to the position of the convex portion 89a is formed on the upper side of the joint portion. The projection 89a is formed of an elastic member (e.g., rubber or resin). When the engaging member 80 is inserted, the projection 89a deforms and finally fits into a recess corresponding to the position of the projection 89a. I do. Here, the convex portion 89a may be formed integrally with the connecting portion 89.

  According to the present modification, the gas generator according to the present modification can be more easily fixed to the module pipe by using the engaging member 80. Further, according to the present modification, even if there is a vibration or an impact after the engagement member 80 is engaged, the displacement is less likely to occur. Also, in the present modification, the same effects as in the above embodiment can be obtained.

  Further, in the engagement member in the above embodiment and the modified example, there are two engagement portions, and a member in which these two engagement portions are connected by the connection portion is shown. Not limited. For example, the hole 1 of the gas generator 10 and the engaged portions 3 and 4 of the module pipe 30 are engaged with only one engagement portion 7 to connect the gas generator 10 and the module pipe 30. It may be fixed. The same applies to other modified examples.

1, 2 hole portions 3, 4, 5 pipe engaged portions 7, 8, 47, 48, 57, 58, 67, 68, 77, 78, 87, 88 engaging portions 9, 49, 59, 69, 79, 89 Connecting part 10 Gas generator 11 Housing 12 Engagement part 14, 34 for gas generator Throttle part 15, 16 Terminal pin 20, 40, 50, 60, 70, 80 Engaging member 30 Module pipe 47a, 48a, 59a Recesses 67a, 68a O-rings 77a, 78a, 89a Convex 100 Mounting structure of gas generator

Claims (6)

An attachment structure of a gas generator that generates gas by burning an igniter by ignition by an igniter,
A gas generator having a cylindrical or disc-shaped housing, and having at least one hole-shaped gas generator engaged portion on an outer peripheral wall of the housing;
A peripheral wall provided on one end side in the axial direction and having an opening into which the gas generator is inserted, and a hole-shaped pipe engaged portion formed at a position corresponding to the gas generator engaged portion. A module pipe having:
In a state where the gas generator is inserted into the module pipe, an engaging member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion,
With
The engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and a connection portion that connects one end of the first engagement portion and one end of the second engagement portion. Among them, at least the first engaging portion, at least the first engaging portion is formed in a shape whose thickness becomes thinner toward the distal end portion,
The gas generator engaged portion has a first hole penetrated along the thickness direction of the housing, and a second hole penetrated along the thickness direction of the housing at a position facing the first hole portion. At least the first hole of the holes, at least the first hole is formed in a shape capable of press-fitting the first engagement portion;
The pipe engaged portion is a third hole penetrated along the thickness direction of the module pipe, and a third hole penetrated along the thickness direction of the module pipe at a position facing the third hole portion. At least the third hole of the four holes is formed, and at least the third hole is formed in a shape with which a front end or a rear end of the first engagement portion engages. Gas generator mounting structure. An attachment structure of a gas generator that generates gas by burning an igniter by ignition by an igniter,
A gas generator having a cylindrical or disc-shaped housing, and having at least one hole-shaped gas generator engaged portion on an outer peripheral wall of the housing;
A peripheral wall provided on one end side in the axial direction and having an opening into which the gas generator is inserted, and a hole-shaped pipe engaged portion formed at a position corresponding to the gas generator engaged portion. A module pipe having:
In a state where the gas generator is inserted into the module pipe, an engaging member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion,
With
The engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and a connection portion that connects one end of the first engagement portion and one end of the second engagement portion. Among them, at least the first engaging portion, at least a concave portion is formed on a surface of the first engaging portion,
The gas generator engaged portion has a first hole penetrated along the thickness direction of the housing, and a second hole penetrated along the thickness direction of the housing at a position facing the first hole portion. The first hole has at least the first hole, and the surface of the first hole corresponds to the position of the recess of the first engagement portion and the recess of the first engagement portion. Is formed with a convex part that can be fitted to
The pipe engaged portion is a third hole penetrated along the thickness direction of the module pipe, and a third hole penetrated along the thickness direction of the module pipe at a position facing the third hole portion. At least the third hole of the four holes is formed, and at least the third hole is formed in a shape with which a front end or a rear end of the first engagement portion engages. Gas generator mounting structure. An attachment structure of a gas generator that generates gas by burning an igniter by ignition by an igniter,
A gas generator having a cylindrical or disc-shaped housing, and having at least one hole-shaped gas generator engaged portion on an outer peripheral wall of the housing;
A peripheral wall provided on one end side in the axial direction and having an opening into which the gas generator is inserted, and a hole-shaped pipe engaged portion formed at a position corresponding to the gas generator engaged portion. A module pipe having:
In a state where the gas generator is inserted into the module pipe, an engaging member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion,
With
The engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and a connection portion that connects one end of the first engagement portion and one end of the second engagement portion. Among them, at least the first engaging portion and the connecting portion, the concave portion is formed at least on the surface of the connecting portion,
The gas generator engaged portion has a first hole penetrated along the thickness direction of the housing, and a second hole penetrated along the thickness direction of the housing at a position facing the first hole portion. Having at least the first hole of the holes,
The pipe engaged portion is a third hole penetrated along the thickness direction of the module pipe, and a third hole penetrated along the thickness direction of the module pipe at a position facing the third hole portion. It has at least the third hole of the four holes, and at least the third hole is formed in a shape with which a front end or a rear end of the first engagement portion is engaged, and at least the third hole is formed. A protrusion is formed on the surface of the third hole, the protrusion corresponding to the position of the recess of the first engagement portion and capable of being fitted into the recess of the first engagement portion. Gas generator mounting structure. An attachment structure of a gas generator that generates gas by burning an igniter by ignition by an igniter,
A gas generator having a cylindrical or disc-shaped housing, and having at least one hole-shaped gas generator engaged portion on an outer peripheral wall of the housing;
A peripheral wall provided on one end side in the axial direction and having an opening into which the gas generator is inserted, and a hole-shaped pipe engaged portion formed at a position corresponding to the gas generator engaged portion. A module pipe having:
In a state where the gas generator is inserted into the module pipe, an engaging member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion,
With
The engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and a connection portion that connects one end of the first engagement portion and one end of the second engagement portion. Among them, at least the first engaging portion, a convex portion is formed on at least a surface of the first engaging portion,
The gas generator engaged portion has a first hole penetrated along the thickness direction of the housing, and a second hole penetrated along the thickness direction of the housing at a position facing the first hole portion. Having at least the first hole of the holes,
The pipe engaged portion is a third hole penetrated along the thickness direction of the module pipe, and a third hole penetrated along the thickness direction of the module pipe at a position facing the third hole portion. At least the third hole of the four holes is formed, and at least the third hole is formed in a shape with which a front end or a rear end of the first engagement portion engages. Gas generator mounting structure.   A concave portion corresponding to the position of the convex portion of the first engaging portion and capable of fitting with the convex portion of the first engaging portion is formed at least on a surface of the first hole portion. The mounting structure of the gas generator according to claim 4, characterized in that: An attachment structure of a gas generator that generates gas by burning an igniter by ignition by an igniter,
A gas generator having a cylindrical or disc-shaped housing, and having at least one hole-shaped gas generator engaged portion on an outer peripheral wall of the housing;
A peripheral wall provided on one end side in the axial direction and having an opening into which the gas generator is inserted, and a hole-shaped pipe engaged portion formed at a position corresponding to the gas generator engaged portion. A module pipe having:
In a state where the gas generator is inserted into the module pipe, an engaging member capable of simultaneously engaging both the gas generator engaged portion and the pipe engaged portion,
With
The engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and a connection portion that connects one end of the first engagement portion and one end of the second engagement portion. Among them, at least having the first engagement portion and the connection portion, at least a convex portion is formed on the surface of the connection portion,
The gas generator engaged portion has a first hole penetrated along the thickness direction of the housing, and a second hole penetrated along the thickness direction of the housing at a position facing the first hole portion. Having at least the first hole of the holes,
The pipe engaged portion is a third hole penetrated along the thickness direction of the module pipe, and a third hole penetrated along the thickness direction of the module pipe at a position facing the third hole portion. It has at least the third hole of the four holes, and at least the third hole is formed in a shape with which a front end or a rear end of the first engagement portion is engaged, and at least the third hole is formed. A concave portion corresponding to the position of the convex portion of the first engaging portion and capable of fitting with the convex portion of the first engaging portion is formed on a surface of the third hole portion. The mounting structure of the gas generator.

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