JP2018199437A - Mounting structure for gas generator - Google Patents

Abstract

To provide a mounting structure for a gas generator capable of facilitating installation of the gas generator and reducing a processing cost while securing quality.SOLUTION: A mounting structure 100 for a gas generator includes: a gas generator 10 having engaged parts 12, 13 on an outer wall part thereof; a module pipe 30 having an opening part 33 into which the gas generator 10 is inserted and engaged parts 31, 32 on an outer wall part thereof; and an engagement member 20 engaging with both of the engaged parts 12, 13 of the gas generator 10 and the engaged parts 31, 32 of the module pipe 30 while the gas generator 10 is inserted into the module pipe 30.SELECTED DRAWING: Figure 1

Description

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

  2. Description of the Related Art Conventionally, seat belt devices and airbag devices have been widely used from the viewpoint of protecting passengers such as automobiles. Among these, the seat belt device is equipped for the purpose of preventing the occupant from being thrown out of the vehicle or outside due to the impact caused by the collision of the vehicle, etc., and seats the occupant by wrapping the belt around the occupant's body. It is restrained and fixed.

  In recent years, a seat belt device having a pretensioner function has become widespread in order to improve an occupant protection function. The pretensioner function is to instantaneously wind up seat belt slack caused by clothing thickness or the like at the time of a collision or immediately before the collision, thereby enhancing 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 the module pipe (see, for example, Patent Document 1). In addition to the above welding, there is a method of caulking and fixing the gas generator to the module pipe, or a method of screwing and fixing the module pipe holding the gas generator to the module cap. .

JP-T-2006-504230

  However, any of the above conventional methods for fixing a gas generator requires the use of an advanced tube expansion processing technique, and there is a problem that the processing cost is high. If an axial force is applied to a hollow material such as a module pipe to expand the tube, problems such as buckling, thinning or cracking are likely to occur. As a molding method for solving this problem, there is a method called tubed hydroforming that fills a gas or liquid inside a module pipe and does not cause the above-mentioned problem by molding in a state where pressure is applied from the inner surface of the pipe to the outside. is there. However, this method has a problem that the molding apparatus becomes special and the production cost is high, and it is necessary to seal liquid or gas inside the pipe during molding, and the mold structure becomes complicated. In the case of caulking, there is a problem that caulking occurs. Furthermore, in the case of screw fastening, there is a possibility that the gas generator in contact with the module cap rotates with the module cap and the connector cannot 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 the processing cost while ensuring quality.

(1) A gas generator mounting structure according to the present invention is a gas generator mounting structure for generating gas by burning an igniting agent by ignition by an igniter, and has a cylindrical or disk-shaped housing. The gas generator having at least one groove-shaped, hollow-shaped, recessed-shaped or hole-shaped engaged portion for the gas generator on the 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 into which the generator is inserted, and a peripheral wall portion in which a hole-like pipe engaged portion is formed at a position corresponding to the gas generator engaged portion, and the gas And an engaging member capable of simultaneously engaging both the engaged portion for the gas generator and the engaged portion for the pipe in a state where the generator is inserted into the module pipe.

  According to the configuration of (1) above, the gas generator is assembled to the module pipe because the engaging member is engaged with both the engaged portion for the gas generator and the engaged portion for the pipe. Can be easily performed. In addition, in the conventional caulking and fixing, a module pipe having a partially expanded tube is required. However, in the present invention, a module pipe having a partially expanded tube is not required, and therefore, the process of simplifying and processing the module pipe is simplified. There is a cost merit by shortening the time, and it is possible to suppress a decrease in strength of the module pipe. In addition, since caulking is not caused during caulking, quality can be ensured. Furthermore, there is no concern that the gas generator rotates together with the module cap at the time of fixing with conventional screws and the connector cannot be inserted, so there is a cost merit while ensuring quality.

(2) In the gas generator mounting structure according to (1), the engaging member has at least one engaging portion, and the engaged portion for the gas generator has a groove shape, a hollow shape, or a concave shape. It is formed and provided corresponding to the engaging portion, and the engaged portion for pipe may be formed in a hole shape and provided corresponding to the engaging portion.

  According to the configuration of (2), the engagement member having the above shape facilitates the assembly of the gas generator to the module pipe.

(3) In the gas generator mounting structure according to (1) or (2), the engagement member includes a first engagement portion and a second engagement portion that are spaced apart from each other, and the first engagement portion. A connecting portion that connects one end of the first engaging portion and one end of the second engaging portion, and the engaged portion for the gas generator is a groove-shaped second portion that can be engaged with the first engaging portion. 1 engaged portion and a groove-shaped second engaged portion engageable with the second engaging portion, and the engaged portion for pipe is engageable with the first engaging portion. A hole-shaped third engaged portion and a hole-shaped fourth engaged portion engageable with the second engaging portion may be included.

  According to the configuration of (3), the engagement member having the above shape facilitates the assembly of the gas generator to the module pipe. In addition, since the engagement region of the engagement member can be taken to some extent, the gas generator can be temporarily fixed, and the phase of the gas generator (the position of the gas generator in the circumferential direction with respect to the module pipe) can be adjusted.

(4) In the gas generator mounting structure according to (3) above, in a direction substantially perpendicular to the extending direction of the first engaging portion and the second engaging portion and the extending direction of the connecting portion. It preferably has a curved bow.

  According to the configuration of (4) above, when the engaging member having the curved portion is engaged, the curved portion receives a restraining force from the engaged portion for the gas generator and the engaged portion for the pipe, and Due to the repulsive force (elastic force) accompanying the restraining force, the gas generator is firmly fixed to the module pipe.

(5) In the gas generator mounting structure according to (1), the engaged portion for the gas generator is formed in the first hole and the first hole that are penetrated along the thickness direction of the housing. It has at least the first hole portion of the second hole portion that is penetrated along the thickness direction of the housing at the facing position, and the engaged portion for pipe penetrates along the thickness direction of the module pipe. You may have at least the said 3rd hole part among the 4th hole part penetrated along the thickness direction of the said module pipe in the position facing the 3rd hole part and the said 3rd hole part.

  According to the configuration of (5), the engaging member is inserted into the hole of the module pipe (the engaged portion for the pipe) and the hole of the housing of the gas generator (the engaged portion for the gas generator). Since it is an aspect to combine, it becomes possible to improve the pressure | voltage resistance of the housing and module pipe of a gas generator. In particular, the pressure resistance of the housing of the gas generator and the module pipe can be improved by making the engaging member pressure resistant.

(6) In the gas generator mounting structure according to (1), the engaging member has at least two locking claws, and the engaged portion for the gas generator is engaged with one of the locking claws. A first engaged portion to be engaged and a second engaged portion to be engaged with the other engaging claw, and the engaged portion for pipe is engaged with the one engaging claw And a fourth engaged portion that is engaged with the other engaging claw.

  According to the configuration of (6) above, the engaging member having the above shape can be engaged with both the engaged portion for the gas generator and the engaged portion for the pipe. This greatly facilitates the assembly of the gas generator to the module pipe.

(7) In the gas generator mounting structure according to (1), the engaging member is a hose clip in which an intermediate portion of a long material is formed in a ring shape, and the engaged portion for the gas generator is: It is formed in a groove shape, a recess shape or a recess shape and is provided with one or more, and the engaged portion for pipe is formed in a hole shape and provided with one or more, and the intermediate portion of the engaging member The portion may be configured to be engaged with both the engaged portion for the gas generator and the engaged portion for the pipe.

  According to the configuration of (7) above, by using the hose clip type engaging member, tightening in the radial direction of the hose clip in the radial direction (in other words, the direction perpendicular to the axial direction of the module pipe). The force can be adjusted. Thereby, the engaging force by the engaging member can be strengthened.

(8) As another aspect, the present invention is a gas generator mounting structure for generating a gas by burning an igniting agent by ignition by an igniter, and has a cylindrical or disk-shaped housing, and the housing The gas generator having at least one convex portion on the outer peripheral wall portion, a peripheral wall portion, and an opening portion provided on one end side in the axial direction of the peripheral wall portion and into which the gas generator is inserted. A module pipe, and the module pipe is formed by cutting out a part of the peripheral wall portion from an end portion on the opening portion side toward an end portion on the opposite side of the end portion. A pipe engaged portion is provided corresponding to the convex portion, and the convex portion is engaged with the pipe engaged portion in a state where the gas generator is inserted into the module pipe. It is.

  According to the configuration of (8), it is easier to assemble the gas generator to the module pipe. In addition, the phase of the gas generator can be determined.

(9) In the gas generator mounting structure according to (8) above, a circumferential direction formed by cutting away a circumferential thickness portion of the module pipe, which is continuous with an end of the engaged portion for the pipe. An engaged portion is provided, and the convex portion may be engaged with the circumferentially engaged portion in a state where the gas generator is inserted into the module pipe.

  According to the configuration of (9) above, the gas generator can be more easily assembled to the module pipe, and the gas generator can be opened from the opening of the module pipe by engaging the convex portion with the circumferentially engaged portion. It will not come out. In addition, the phase of the gas generator can be determined.

(10) In the gas generator mounting structure according to (8) above, even if the projecting portion is engaged with the engaged portion for the pipe, the engagement portion is welded. Good.

  According to the configuration of (10) above, the gas generator can be more firmly fixed to the module pipe.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the attachment structure of the gas generator which can perform assembly | attachment of a gas generator easily and can reduce processing cost, ensuring quality.

(A) is a perspective view which shows the attachment structure of the gas generator which concerns on 1st Embodiment of this invention, (b) is sectional drawing of the attachment structure of (a). (A) is a perspective view which shows the attachment structure of the gas generator which concerns on 2nd Embodiment of this invention, (b) is the figure which looked at the module pipe of (a) from the back side, (c) is ( It is a top view of the attachment structure of a). (A) is a perspective view which shows the attachment structure of the gas generator which concerns on 3rd Embodiment of this invention, (b) is a perspective view which shows the other example of the attachment method of the engaging member of (a). It is a perspective view which shows the attachment structure of the gas generator which concerns on 4th Embodiment. It is a perspective view which shows the attachment structure of the gas generator which concerns on 5th Embodiment. (A) is a perspective view which shows the attachment structure of the gas generator which concerns on 6th Embodiment of this invention, (b) is a top view of the attachment structure of (a). (A) is a perspective view which shows the modification of an engaging member, (b) is a figure for demonstrating the effect | action of an engaging member. It is a figure which shows the modification of the engagement method of a convex part. It is a figure which shows another modification of the engagement method of a convex part.

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

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

  The gas generator 10 includes a cylindrical housing 11 having a narrowed portion 14 formed on one end thereof, and a pair of groove-shaped first engaged portions 12 formed so as to face each other on the outer peripheral wall portion of the housing 11. And a second engaged portion 13. In this gas generator 10, when a vehicle collides, a collision is detected by a collision detection means (not shown) provided in the vehicle, and based on this, gas is supplied by energization from a control unit provided in the vehicle. An igniter (not shown) provided in the generator 10 is activated. A gas generating agent (not shown) is ignited and burned by a flame generated by the operation of the igniter to generate a large amount of gas. This gas serves as a driving force for a seat belt pretensioner 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 narrowed portion 34 is formed at the end of the module pipe 30 opposite to the opening 33. As shown in FIG. 1B, when the gas generator 10 is inserted into the module pipe 30, the throttle portion 14 of the gas generator 10 comes into surface contact with the throttle portion 34 of the module pipe 30, so that the module pipe The gas generator 10 inserted in 30 is prevented from falling off, and the gas generator 10 is positioned in the axial direction (vertical direction in FIG. 1).

  Moreover, when the gas generator 10 is inserted in the module pipe 30, the peripheral wall portion (tubular portion) of the module pipe 30 corresponds to the first engaged portion 12 of the gas generator 10 and has a thickness direction. A slit-like hole-like third engaged portion 31 penetrating along the (radial direction) and a slit shape corresponding to the second engaged portion 13 and penetrating along the thickness direction (radial direction) The hole-shaped fourth engaged portion 32 is provided so as to face.

  The engaging member 20 is connected to connect the first engaging portion 21 and the second engaging portion 22 that are spaced apart from each other, and one end of the first engaging portion 21 and one end of the second engaging portion 22. Part 23. In such a configuration, the gas generator is configured so that the positions of the first engaged portion 12 and the second engaged portion 13 correspond to the positions of the third engaged portion 31 and the fourth engaged portion 32. 10 is inserted into the module pipe 30, the engaging member 20 is moved in the direction of the arrow shown in FIG. 1A, and the first engaging portion 21 is engaged with the first engaged portion 12 and the third engaged portion. The second engaging portion 22 is engaged with both the second engaged portion 13 and the fourth engaged portion 32 while being engaged with both of the portions 31. As a result, as shown in FIG. 1B, the gas generator 10 can be assembled to the module pipe 30 by the engaging member 20.

  As described above, according to the present embodiment, the first engaging portion 21 of the engaging member 20 is engaged with the first engaged portion 12 of the gas generator 10 and the third engaged portion 31 of the module pipe 30. And the second engaging portion 22 of the engaging member 20 is engaged with the second engaged portion 13 of the gas generator 10 and the fourth engaged portion 32 of the module pipe 30. The gas generator 10 can be easily assembled to the pipe 30. In addition, in the conventional caulking and fixing, a process of expanding the module pipe according to the shape of the gas generator is required. However, in the present invention, this process is not necessary, and thus the processing process of the module pipe 30 is simplified. There is a cost merit due to the reduction of the processing time and the reduction of strength of the module pipe 30 can be suppressed. In addition, since caulking is not caused during caulking, quality can be ensured. Furthermore, there is no concern that the gas generator rotates together with the module cap at the time of the above-described conventional screw tightening and fixing, and the connector cannot be inserted, so there is a cost merit while ensuring quality.

Second Embodiment
Then, the attachment structure of the gas generator concerning 2nd Embodiment is demonstrated. Note that the parts having the same reference numerals in the last two digits as those in the first embodiment are the same as those described in the first embodiment unless otherwise specified, and thus the description thereof is omitted.

  As shown in FIG. 2A, the gas generator mounting structure 200 according to the second embodiment has a pair of terminal pins 115 and 116 (see FIG. 2C) to which a predetermined amount of current is supplied. A gas generator 110, a module pipe 130, and an engaging member 106 for assembling the gas generator 110 to the module pipe 130 are provided.

  In the present embodiment, the gas generator 110 is provided with a gas generator engaged portion 112 having holes 101 and 102 penetrating along the thickness direction (radial direction) of the housing 111. In addition, the housing 111 is engaged with another gas generator having holes 101 and 102 in the same manner as the gas generator engaged portion 112 at a symmetrical (opposite side) position about the axis of the housing 111. A part (not shown) is provided.

  A peripheral wall portion (cylindrical portion) of the module pipe 130 is provided with a hole-like engaged portion 103 for a pipe penetrating along the thickness direction (radial direction) of the module pipe 130, and FIG. As shown in (b), a hole that penetrates along the same thickness direction (radial direction) is provided at a position symmetric (opposite side) to the engaged portion 103 for the pipe around the axis of the module pipe 130. The pipe engaged portions 104 and 105 are provided.

  The engaging member 106 is formed in a U shape, and includes an engaging portion 107 and an engaging portion 108, and one end of the engaging portion 107 and a connecting portion 109 that connects one end of the engaging portion 108. Yes. The other end of the engaging portion 107 is sized to be engaged with the engaged portion for pipe 104, and the other end of the engaging portion 108 is sized to be engaged with the engaged portion for pipe 105. Has been.

  Next, a method for attaching the gas generator 110 to the module pipe 130 will be described. First, the gas generator 110 is inserted into the module pipe 130 so that the position of the gas generator engaged portion 112 (holes 101 and 102) corresponds to the position of the pipe engaged portion 103, and then the engagement is performed. The member 106 is moved in the direction of the arrow shown in FIG. 2A, and the engaging portions 107 and 108 of the engaging member 106 are changed to the engaged portion 103 for the pipe of the module pipe 130 and the gas generator 110 generates gas. The instrument engaged portion 112 (holes 101 and 102) and the other gas generator engaged portion are inserted in this order. Thereafter, the other end of the engaging portion 107 is inserted and engaged to the outside of the engaged portion for pipe 104, and the other end of the engaging portion 108 is inserted to the outside of the engaged portion for pipe 105 and engaged. Combine. At this time, the connecting portion 109 comes into contact with the engaged portion 112 for the gas generator and cannot advance, so that the engaging member 106 is positioned. As a result, as shown in FIG. 2C, the gas generator 110 can be assembled to the module pipe 130 by the engaging member 106. In this case, as described above, the engagement member 106 is formed in a U shape, so that the engagement member 106 can be disposed avoiding the pair of terminal pins 115 and 116 of the gas generator 110. It has become.

  As described above, according to the present embodiment, the gas generator 110 can be easily assembled to the module pipe 130 by the engaging member 106. Further, as in the first embodiment, quality assurance and cost reduction can be realized. Furthermore, by making the engaging member 106 have pressure resistance, the pressure resistance of the housing 111 and the module pipe 130 of the gas generator 110 can be improved.

<Third Embodiment>
Then, the attachment structure of the gas generator which concerns on 3rd Embodiment is demonstrated. Note that the parts having the same reference numerals in the last two digits as those in the first embodiment are the same as those described in the first embodiment unless otherwise specified, and thus the description thereof is omitted.

  As shown to Fig.3 (a), the attachment structure 300 of the gas generator which concerns on 3rd Embodiment is provided with the engaging member 240 which has a pair of latching claw 244,245. The engaging member 240 includes a holding portion 242 that holds the locking claw 244, a holding portion 243 that holds the locking claw 245, and a connecting portion 241 that connects the holding portion 242 and the holding portion 243. . The holding portions 242 and 243 are respectively arranged perpendicular to the connecting portion 241, and the locking claw 244 is inclined and arranged inside the holding portion 242 so as to form an acute angle with the holding portion 242. Is inclined to the inside of the holding portion 243 so as to form an acute angle with the holding portion 243.

  In such a configuration, with the gas generator 210 inserted into the module pipe 230, the engagement member 240 is moved in the direction of the arrow shown in FIG. Is elastically locked to both the first engaged portion 212 and the third engaged portion 231, and the locking claw 245 is elastically engaged to both the second engaged portion 213 and the fourth engaged portion 232. Stop. As a result, the gas generator 210 can be fixed to the module pipe 230 by the engaging member 240. Thereby, the assembly of the gas generator 210 to the module pipe 230 is remarkably facilitated. Furthermore, as in the first embodiment, quality assurance and cost reduction can be realized. 3B, the engaging member 240 may be engaged so as to slide from the circumferential surface direction of the module pipe 230. Although not shown, the engaging claws 244 and 245 are not formed in advance, and the engaging member 240 is placed at a position where it is desired to be attached to the module pipe 230, and then the distal ends of the holding portions 242 and 243 are bent. While the pawls 244 and 245 are formed, the locking pawl 244 is locked to both the first engaged portion 212 and the third engaged portion 231, and the locking pawl 245 is locked to the second engaged portion 213. And it may be locked to both the fourth engaged portion 232.

<Fourth embodiment>
Then, the attachment structure of the gas generator which concerns on 4th Embodiment is demonstrated. Note that the parts having the same reference numerals in the last two digits as those in the first embodiment are the same as those described in the first embodiment unless otherwise specified, and thus the description thereof is omitted.

  As shown in FIG. 4, in the gas generator mounting structure 400 according to the fourth embodiment, the gas generator 310 has convex portions 340 and 341 on the housing 311. For example, the convex portion 341 is provided at a position symmetrical to the convex portion 340 around the axis of the housing 311. On the other hand, in the module pipe 330, the engaged portion for pipe formed by cutting out the thickness portion of the module pipe 330 from the end portion on the opening 333 side toward the end portion on the opposite side of the end portion. Portions 342 and 344 are provided. Further, a circumferentially engaged portion 343 is provided which is continuous with the end portion of the engaged portion for pipe 342 and is formed by cutting out a circumferential thickness portion of the module pipe 330. In addition, although illustration is abbreviate | omitted, the same circumferential direction engaged part is provided also in the edge part of the engaged part 344 for pipes.

  In such a configuration, after the gas generator 310 is inserted into the module pipe 330, the convex portions 340 and 341 are slid to the lowest position while being engaged with the corresponding engaged portions for pipes 342 and 344, By rotating the gas generator 310 in the circumferential direction, the convex portion 340 is engaged with the circumferentially engaged portion 343 and the convex portion 341 is engaged with the circumferentially engaged portion (not shown). As a result, the gas generator 310 can be assembled to the module pipe 330.

  As described above, according to the present embodiment, the gas generator 310 can be easily assembled to the module pipe 330. Further, the gas generator 310 may come off by engaging the convex portion 340 with the circumferentially engaged portion 343 and engaging the convex portion 341 with the circumferentially engaged portion (not shown). There is no. Furthermore, as in the first embodiment, quality assurance and cost reduction can be realized.

<Fifth Embodiment>
Next, a gas generator mounting structure according to the fifth embodiment will be described. Note that parts having the same reference numerals in the last two digits as those in the fourth embodiment are the same as those described in the fourth embodiment unless otherwise specified, and thus description thereof is omitted.

  As shown in FIG. 5, in the gas generator mounting structure 500 according to the fifth embodiment, the convex portions 440 and 441 are inserted into the corresponding pipe engaged portions 442 while the gas generator 410 is inserted into the module pipe 430. Then, the gas generator 410 is slid downward until the movement of the gas generator 410 stops in a state of being engaged with the engaged portion for pipe (not shown). Then, in a state where the convex portion 440 is engaged with the engaged portion for pipe 442 and the convex portion 441 is engaged with the engaged portion for pipe, welding is performed on the engaged portion. As a result, the gas generator 410 can be fixed to the module pipe 430.

  As described above, according to the present embodiment, the gas generator 410 can be easily assembled to the module pipe 430. Further, by welding the engagement portion, the gas generator 410 can be firmly fixed to the module pipe 430. Furthermore, as in the fourth embodiment, quality assurance and cost reduction can be realized.

<Sixth Embodiment>
Next, a gas generator mounting structure according to the sixth embodiment will be described. Note that the parts having the same reference numerals in the last two digits as those in the first embodiment are the same as those described in the first embodiment unless otherwise specified, and thus the description thereof is omitted.

  As shown in FIG. 6B, in the gas generator mounting structure 600 according to the sixth embodiment, an engagement member 580 made of a hose clip in which an intermediate portion 581 of a long material is formed in a ring shape is used. . In a state where the gas generator 510 is inserted into the module pipe 530, a part of the intermediate portion 581 of the engagement member 580 is a first engaged portion 512 of the gas generator 510 and a third engaged portion 531 of the module pipe 530. The other portion of the intermediate portion 581 is engaged with both the second engaged portion 513 of the gas generator 510 and the fourth engaged portion 532 of the module pipe 530. Accordingly, the gas generator 510 can be fixed to the module pipe 530 by the engaging member 580. As described above, after engaging the engagement member 580 and welding or bonding the engagement member 580 to the module pipe 530, a portion of the engagement member 580 that protrudes outward from the outermost surface of the module pipe 530. May be excised.

  As described above, according to the present embodiment, by using the hose clip type engagement member 580, the radial direction of the annular portion of the engagement member 580 (in other words, with respect to the axial direction of the module pipe 530). It is possible to adjust the tightening force in the vertical direction). Thereby, the engaging force by the engaging member 580 can be strengthened. Further, the gas generator 510 can be easily assembled to the module pipe 530 by the engaging member 580. Furthermore, as in the first embodiment, quality assurance and cost reduction can be realized.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent. This will be described below.

  In the said 1st Embodiment, although the engagement member 20 which has the 1st engagement part 21 and the 2nd engagement part 22 was used, as shown to Fig.7 (a), it is not limited to this, Employing an engagement member 720 including a first engagement portion 721 and a second engagement portion 722, and a connecting portion 723 that connects one end of the first engagement portion 721 and one end of the second engagement portion 722. Also good. Here, the first engaging portion 721 and the second engaging portion 722 are respectively arcuate portions 721a that warp in the extending direction Y and the direction (substantially Z direction) substantially perpendicular to the extending direction X of the connecting portion 723. 722a.

  The arcuate portion 721a is warped along the positive direction in the approximately Z direction, and the arcuate portion 722a is warped along the negative direction in the approximately Z direction. According to this configuration, when the engaging member 720 is engaged, the arcuate portions 721a and 722a of the first engaging portion 721 and the second engaging portion 722 are connected to each engaged portion for each gas generator and each pipe. The gas generator is firmly engaged with the module pipe by receiving the restraining force from the engaged portion for use and the repulsive force (elastic force of the first engaging portion 721 and the second engaging portion 722) accompanying the restraining force. Can be.

  Specifically, as shown in FIG. 7B, a pair of arcuate portions 721a of the first engaging portion 721 are opposed to the engaged portion 712 for the gas generator and the engaged portion 731 for the pipe. Is supported at the three points A, B, and C of the wall portion and receives a restraining force, and the repulsive force accompanying the restraining force (the elastic force of the arcuate portion 721a of the first engaging portion 721) is applied to the module pipe. The engagement of the gas generator can be strengthened. In FIG. 7B, the overall view of the gas generator and the module pipe is omitted. Further, the same effect as the first engagement portion 721 can be obtained with respect to the second engagement portion 722.

  Moreover, in the said 1st Embodiment, although the U-shaped engaging member 20 which has the 1st engaging part 21, the 2nd engaging part 22, and the connection part 23 was used, it is not limited to this. However, any engagement member that can fix the gas generator 10 and the module pipe 30 may be used. For example, instead of the engaging member 20, two separate rod-like members are formed by the concave portion formed by the first engaged portion 12 and the third engaged portion 31, the second engaged portion 13, and the second engaged portion. It is also possible to adopt a configuration in which each of the four engaged portions 32 is engaged with the recessed portion and is press-fixed or welded. Alternatively, only the first engaged portion 12 and the third engaged portion 31 are formed, and the second engaged portion 13 and the fourth engaged portion 32 are not formed. It may be configured to engage with the recess formed by the engaged portion 12 and the third engaged portion 31 and to fix by pressure or welding.

  Further, instead of the engaging member 20 of the first embodiment, one deformable long member (for example, a deformable rod-shaped member or linear member made of metal) is replaced with the first engaged portion 12. Further, the gas generator 10 and the module pipe are formed by winding one or more turns so as to be engaged with the third engaged portion 31, the second engaged portion 13, and the fourth engaged portion 32. 30 may be fixed.

  Moreover, in the said 2nd Embodiment, although the U-shaped engaging member 106 which has the engaging part 107 and the engaging part 108 was used, it is not limited to this, The gas generator 110 and a module pipe Any device can be used as long as it can be fixed to 130. For example, only one of the hole portions 101 and 102 of the gas generator 110 is formed so that one rod-like engagement member instead of the engagement member 106 passes through the one hole portion. It is good also as a structure which engages and fixes the gas generator 110 and the module pipe 130. FIG. Further, instead of the holes 101 and 102, one hole (with a dead end at the back) is formed in the middle of the gas generator 110 (for example, in the vicinity of the center), and a single rod-like engagement member The gas generator 110 and the module pipe 130 may be fixed by being inserted into the hole and engaged.

  In the second embodiment, the engagement portion 107 and the engagement portion 108 of the U-shaped engagement member 106 are engaged with the pipe through the pipe engagement portion 103 and the holes 101 and 102. Although it was set as the structure inserted in the joint parts 104 and 105, it is not limited to this, What kind of thing may be used as long as the gas generator 110 and the module pipe 130 can be fixed. . For example, the pipe engaged portions 104 and 105 are not formed, but instead of the holes 101 and 102, two holes (the back is a dead end) up to the middle of the gas generator 110 (for example, near the center). The engagement member similar to the engagement member 106 may be used except that the lengths of the engagement portion 107 and the engagement portion 108 are shortened in accordance with the depths of these two holes. As another modification of the second embodiment, the lengths of the engaging portion 107 and the engaging portion 108 may be different. In addition, one of the hole 101 and the hole 102 may be a hole (the back is a dead end) and the other may be a through hole. The engagement part 107 and the engagement part of the engagement member 106 may be used. The length with 108 may be a length that matches the depth of these holes. The “hole” in the present application may include the above “hole”.

  In the second embodiment, the other end of the engaging portion 107 is inserted and engaged to the outside of the engaged portion for pipe 104, and the other end of the engaging portion 108 is connected to the engaged portion for pipe 105. Although the tip protruded as a protrusion as it was inserted to the outside and engaged, instead, the shape of the other end of the engaging portion 107 and the engaging portion 108 is copied to the surface of the outer wall portion of the module pipe. The shape or the surface of the outer wall portion of the module pipe may extend from the surface to the inside, and may be configured so as not to protrude as a protrusion while being engaged with the engaged portions 104 and 105 for the pipe. In the second embodiment, the tip of the connecting portion 109 protrudes as a protrusion. Instead, the shape follows the surface of the outer wall portion of the module pipe, or the inner side of the surface of the outer wall portion of the module pipe. It is good also as a structure which does not protrude as a protrusion, engaging with the to-be-engaged part 103 for pipes.

  In the second embodiment, the engaging portions 107 and 108 of the engaging member 106 are also engaged with the other gas generator engaged portions (not shown) and the pipe engaged portions 104 and 105. However, the present invention is not limited to this, and the engaging portions 107 and 108 may be engaged only with the pipe engaged portion 103 and the gas generator engaged portion 112 (hole portions 101 and 102). .

  Further, in the gas generators of the first, third, and sixth embodiments, the groove-shaped one is illustrated as an example of the engaged portion. However, the shape is not limited to this, and may be a shape that can be the engaged portion. Any shape may be used, for example, it may be in the shape of a recess or a recess.

  In the third embodiment, the pair of locking claws 244 and 245 are provided on the engaging member 240. However, the present invention is not limited to this, and there are two or more locking claws (for example, two or three). There may be one).

  In the fourth embodiment, the convex portion 340 is engaged with the circumferentially engaged portion 343. However, the present invention is not limited to this, and as shown in FIG. After being inserted to the lowermost portion of the engaged portion 842 for use, the convex portion 840 is expanded in the circumferential direction by being pressed and crushed from the outside to the inside direction, and the circumferentially engaged portion 843 and the engaged portion 842 for the pipe are expanded. The gas generator 810 may be fixed to the module pipe 830 by filling the lowermost part. Alternatively, as shown in FIG. 9, the width of the circumferentially engaged portion 943 in the vertical direction of FIG. 9 is slightly smaller than the width of the convex portion 940 in the vertical direction of FIG. 9. The gas generator 910 may be fixed to the module pipe 930 by press-fitting into the circumferentially engaged portion 943.

  In the fifth embodiment, the gas generator 410 is fixed to the module pipe 430 by engaging the projections 440 and 441 with the engaged portions for pipes and performing welding. However, the present invention is not limited to this, and the pipe engaged portion may be formed in a tapered shape, and the convex portions 440 and 441 may be press-fitted and fixed to the pipe engaged portion. Further, the engagement portion may be welded after the press-fitting.

  Moreover, in the said 4th and 5th embodiment, although the convex part and the to-be-engaged part for pipes corresponding to this were provided 2 each, it is not limited to this, These are provided 1 each Or three or more may be provided.

  Furthermore, in the sixth embodiment, a part of the intermediate part 581 of the engaging member 580 is engaged with both the first engaged part 512 and the third engaged part 531, and the other part of the intermediate part 581 is the first part. The second engaged portion 513 and the fourth engaged portion 532 are engaged with each other, but the present invention is not limited to this. The intermediate portion 581 of the engaging member 580 may be engaged only with both the first engaged portion 512 and the third engaged portion 531. In this case, it is possible not to provide the second engaged portion 513 and the fourth engaged portion 532.

  Furthermore, in the fourth and fifth embodiments, the throttle portions 334 and 434 are provided in the module pipes 330 and 430 in order to further improve the reliability of preventing the gas generators 310 and 410 from being dropped. Not limited to this, the aperture portions 334 and 434 need not be provided. In this case, since the drawing portions 334 and 434 are not necessary, the drawing portion is not required to be processed, and the processing time of the module pipe and the processing cost can be reduced. In addition, since the drawing process is not performed, strength reduction due to rolling during the drawing process does not occur, so that the module pipe having a relatively thin plate thickness is used.

10, 110, 210, 310, 410, 510 Gas generator 11, 111, 211, 311, 411, 511 Housing 12, 212, 512, 712 First engaged portion 13, 213, 513 Second engaged portion 14, 114, 214, 314, 414, 514 Restriction part 20, 106, 240, 580, 720 Engagement member 21, 721 First engagement part 22, 722 Second engagement part 23, 109, 723 Connection part 30, 130, 230, 330, 430, 530, 830, 930 Module pipes 31, 231, 531, 731 Third engaged portion 32, 232, 532 Fourth engaged portion 33, 133, 233, 333, 433, 433, 533 Opening 34, 134, 234, 334, 434, 534 Restriction 100, 200, 300, 400, 500, 600 Installation of gas generator Structure 101, 102, Hole 103, 104, 105, 342, 344, 442, 444, 842, 942 Pipe engaged portion 107, 108 Engagement portion 112 Gas generator engaged portion 115, 116 Terminal pin 241 Connecting portion 242, 243 Holding portion 244, 245 Locking claw 340, 341, 440, 441, 840, 940 Protruding portion 343, 843, 943 Circumferentially engaged portion 581 Intermediate portion 941 Press-fitting member X Direction perpendicular to thickness direction Y thickness direction

Claims (10)

A gas generator mounting structure for generating gas by burning an igniting agent by ignition by an igniter,
The gas generator having a cylindrical or disk-shaped housing, and having at least one groove-shaped, hollow-shaped, recessed-shaped or hole-shaped engaged portion for the gas generator on an outer peripheral wall portion 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-like engaged portion for a pipe formed at a position corresponding to the engaged portion for the gas generator A module pipe having a portion;
An engagement member capable of simultaneously engaging both the engaged portion for the gas generator and the engaged portion for the pipe in a state where the gas generator is inserted into the module pipe;
A structure for mounting a gas generator, comprising:   The engaging member has at least one engaging portion, and the engaged portion for the gas generator is formed in a groove shape, a recessed shape, or a recessed shape, and is provided corresponding to the engaging portion, and the pipe The gas generator mounting structure according to claim 1, wherein the engaged portion is formed in a hole shape and is provided corresponding to the engaging portion. The engaging member includes a first engaging portion and a second engaging portion that are disposed at a distance from each other, and a connecting portion that connects one end of the first engaging portion and one end of the second engaging portion. Have
The engaged portion for the gas generator includes a groove-shaped, hollow-shaped or recessed-shaped first engaged portion that can be engaged with the first engaging portion, and a groove that can be engaged with the second engaging portion. And a second engaged portion in the shape of a recess, a recess or a recess,
The pipe engaged portion includes a hole-shaped third engaged portion that can be engaged with the first engaging portion, and a hole-shaped fourth engaged portion that can be engaged with the second engaging portion. The gas generator mounting structure according to claim 1, wherein the gas generator mounting structure includes a portion.   The first engaging portion and the second engaging portion are warped in a direction substantially perpendicular to the extending direction of the first engaging portion and the second engaging portion and the extending direction of the connecting portion. The gas generator mounting structure according to claim 3, further comprising an arcuate portion. The engaged portion for the gas generator includes a first hole that is penetrated along the thickness direction of the housing, and a second hole that is penetrated along the thickness direction of the housing at a position facing the first hole. Having at least the first hole portion of the hole portions;
The pipe engaged portion includes a third hole that is penetrated along the thickness direction of the module pipe, and a third hole that is penetrated along the thickness direction of the module pipe at a position facing the third hole. The gas generator mounting structure according to claim 1, wherein at least the third hole portion of the four hole portions is provided. The engaging member has at least two locking claws;
The engaged portion for the gas generator includes a first engaged portion that is engaged with one of the engaging claws, and a second engaged portion that is engaged with the other engaging claw,
The pipe engaged portion includes a third engaged portion that is engaged with the one locking claw and a fourth engaged portion that is engaged with the other locking claw. The gas generator mounting structure according to claim 1, wherein: The engaging member is a hose clip in which an intermediate portion of the long material is formed in a ring shape,
The gas generator engaged portion is formed in a groove shape, a hollow shape, or a concave shape, and is provided with one or more,
The pipe engaged portion is formed in a hole shape and is provided with one or more,
2. The gas according to claim 1, wherein the intermediate portion of the engaging member is configured to be engaged with both the engaged portion for the gas generator and the engaged portion for the pipe. Generator mounting structure. A gas generator mounting structure for generating gas by burning an igniting agent by ignition by an igniter,
The gas generator having a cylindrical or disk-shaped housing, and having at least one convex portion on an outer peripheral wall portion of the housing;
A module pipe having a peripheral wall portion and an opening portion provided on one end side in the axial direction of the peripheral wall portion and into which the gas generator is inserted;
The module pipe has an engaged portion for a pipe formed by cutting out a part of a peripheral wall portion from an end portion on the opening portion side toward an end portion on the opposite side of the end portion. Corresponding to the part,
The gas generator mounting structure, wherein the convex portion is engaged with the engaged portion for the pipe in a state where the gas generator is inserted into the module pipe. Continuously engaged with the end of the engaged portion for the pipe, and provided with a circumferentially engaged portion formed by cutting out a circumferential thickness portion of the module pipe,
9. The gas generator mounting structure according to claim 8, wherein the convex portion is engaged with the circumferentially engaged portion in a state where the gas generator is inserted into the module pipe.   9. The gas generator mounting structure according to claim 8, wherein welding is applied to the engaging portion in a state where the convex portion is engaged with the engaged portion for pipe.

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