JPH101018A - Air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure reduction of manufacturing and assembling manhours and of cost of an air bag device. SOLUTION: A bolt 1 for attaching an air bag device to a vehicle is installed from the inside of a hole 20 of a cylindrical case 2, and its thread part 12 projects outside the case 2. A cylindrical inflator 3 is housed in the case 2, and a head part 11 is pinched by the inflator 3 and the case 2 to fix the bolt 1 to the case 2. On a first end face 32a of one end part 32 of the inflator is provided a gas injection part 34 which is provided with a gas blowout hole 33 on the circumferential surface and projects in the axial direction, and the gas blown out from the injection part 34 is introduced toward the air bag from a gas injection window 26 of the case 2. On the other end part 31 side of the inflator 3 is provided a connector 6 which is electrically connected to the harness 5. Pawls 21 and 22 provided on the case 3 are respectively caulked in a taper shape radially and inwardly to abutt the end parts 31 and 32 obliquely and regulate axial and radial movements of the inflator 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device used for protecting an occupant of a moving body, and more particularly, to a case for mounting a bolt for attaching the airbag device to the moving body and an inflator for generating gas at the time of collision. To an airbag device that can be fixed with a simple configuration.

[0002]

2. Description of the Related Art Conventionally, in an airbag device provided with, for example, a cylindrical inflator, a bolt is fixed to a case and the bolt is fastened to a predetermined frame of the vehicle, so that the airbag device is attached to the vehicle. . FIG. 15 schematically shows a cross-sectional configuration of the airbag device in this case. In this airbag device, a stud bolt (not shown) formed at one end of the inflator 51 is fastened to the case 52 using a nut to fix the inflator 51 to the case 52 and to attach a bolt 53 to a vehicle. It is fixed to the case 52 by press fitting or welding. With such a device configuration, the airbag device is satisfactorily fixed to the vehicle by fastening the bolt 53 fixed to the case 52 to a predetermined frame (not shown) of the vehicle.

[0003]

However, in the above-described airbag apparatus, when the bolt 53 is press-fitted into the case 52 and fixed, the dimensional accuracy is required for the case 52 and the bolt 53, and the press-fitting device is required. This is necessary, and in addition, the shape of the bolt is complicated, so that the number of manufacturing and assembling steps is increased, and the cost of the airbag device is increased. Further, even when the bolt 53 is fixed to the case 52 by welding, a welding machine is required for assembling the bolt 53, and assembling the bolt 53 by welding increases the number of assembly steps. Further, since the configuration is such that the inflator 51 and the case 52 are fixed by fastening the stud bolt and the nut, there is a problem that the number of parts is increased by the use of the bolt and the nut, and the cost is further increased.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems and to easily fix the bolt to the case by clamping the head of the bolt for attaching the airbag device to the vehicle by the case and the inflator. An object of the present invention is to realize a low-cost airbag device by fixing an inflator to a case without using fastening parts such as bolts and nuts, thereby reducing the number of parts of the airbag device, reducing the number of manufacturing and assembly steps.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, the means described in claim 1 can be adopted.
According to this means, a bolt for fixing the airbag device to the vehicle is provided through the base of the holding means, and the head of the bolt is held between the base and the inflator by installing the inflator on the base. Is done. The first end face of the inflator or the edge thereof is in contact with a first fixing portion formed at the base of the holding means, and the axial movement of the inflator is restricted. In addition, the peripheral surface of the inflator is covered by the second fixing portion, the radial movement of the inflator is restricted, and the second end surface or the edge thereof provided opposite to the first end surface in the axial direction of the inflator. When the second fixing portion is brought into contact with the inflator, axial movement of the inflator is restricted. Thereby, the head of the bolt is pressed by the inflator, and the bolt can be easily fixed to the base of the holding means by being sandwiched between the inflator and the base of the holding means,
There is no need to fix the bolt to the holding means by welding or press fitting, so that the number of manufacturing and assembling steps is reduced, and the cost of the airbag device can be reduced. In addition, the first and second fixing portions of the holding means abut on the first end face or its edge, and the second end face or its edge, respectively, so that the movement of the inflator in the axial direction can be restricted and the circumference of the inflator can be restricted. The second that covers the surface
Since the movement of the inflator in the radial direction can be restricted by the fixing portion, the inflator can be fixed to the holding means without using fastening parts such as bolts and nuts, and the number of parts of the airbag device can be reduced.

According to the second aspect of the present invention, in the first fixing portion or the second fixing portion formed integrally with the base of the holding means, a peripheral portion of the first end face or the second end face of the inflator. By making the claw bent in abut on the first end face or its edge, or the second end face or its edge obliquely, the axial and radial movement of the inflator is regulated. Thereby, the first fixed portion or the second
Since the movement of the inflator in the radial direction and the axial direction can be regulated by the fixing portion, the inflator can be satisfactorily fixed to the holding means. Further, the bolt can be fixed to the base by the holding force of the first fixing portion or the second fixing portion.

According to the third aspect, the first fixing portion, the second fixing portion, and the base portion are integrally formed in a cylindrical shape. Thus, the inflator can be covered with the tubular body, so that the inflator can be held more completely.

According to the fourth aspect of the present invention, the first fixing portion and the second fixing portion are formed with a claw bent in a tapered shape. Thereby, the movement of the inflator in the radial direction and the axial direction can be more appropriately regulated.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, the present invention will be described based on specific embodiments. FIG. 1 is a schematic view showing a configuration of a first embodiment according to the present invention, and FIGS. 1A and 1B are a front view and a side view, respectively. 2 is an enlarged view of a portion A in FIG. 1, and FIG. 3 is a view as viewed in the direction of arrow B in FIG. The hybrid inflator 3 has a cylindrical shape and is housed in the case 2 (corresponding to a holding means). Inside the main body 30 of the inflator 3, a squib as a detonating element and an explosive and a high-pressure gas as a gas generating agent are stored. One end portion 32 is formed in a tapered shape, and a gas injection portion 34 having a plurality of gas injection holes 33 formed on a peripheral surface thereof is provided on a first end surface 32a so as to protrude in the axial direction. . This gas injection unit 34 is
It has an outer diameter smaller than the outer diameter of 0. On the other second end surface 31a, a connector 6 electrically connected to the harness 5 is provided.

The case 2 is made of a plate material, and has a joint 23,
It is formed in a tubular shape by welding at 24. The inner diameter of the case 2 is formed to be slightly larger than the outer diameter of the main body 30 of the inflator 3 so that the inflator 3 can be housed therein. The case 2 is provided with claws 2 at positions corresponding to the ends 31 and 32 of the inflator 3 respectively.
A plurality of 1, 22 are provided. The claw 21 is obliquely abutted on the end portion 31 of the inflator 3 by being caulked radially inward in a tapered shape (see FIG. 2). Thus, the movement of the inflator 3 toward the connector 6 in the axis X direction and the movement in the radial direction are restricted.

The rectangular claw 22 has a U-shaped through groove 22a formed around the claw 22 and a bent portion 22b.
Are provided substantially orthogonal to the axis X direction (see FIG. 3).
The claw 22 is bent radially inward from the bent portion 22b and caulked in a tapered shape, whereby the claw 22 abuts on the end 32 of the inflator 3 at an angle. Thus, the movement of the inflator 3 toward the gas injection unit 34 in the axial X direction and the movement in the radial direction are restricted. In this way, the inward movement of the inflator 3 in the axis X direction and the movement in the radial direction are restricted by the radially inward caulking of the claws 21 and 22, and the inflator 3 is fixed to the case 2 satisfactorily.

In FIG. 1, an opening 25 is provided substantially at the center of the case 2 to reduce the weight. In addition, a gas injection window 26 is provided in the case 2 on the side opposite to the harness 5 side in order to guide gas generated from the gas injection holes 33 of the inflator 3 in the direction of an airbag described later. A hole 20 having a diameter larger than the outer diameter of the threaded portion 12 of the bolt 1 and smaller than the outer diameter of the head 11 is provided at a predetermined position in the base 27 of the case 2. The head 11 is hooked on the inner peripheral surface of the case 2, and the screw 12 protrudes out of the case 2. The bolt 1 is fixed to the case 2 by being held between the inner peripheral surface of the case 2 and the outer peripheral surface of the inflator 3 by the holding force of the caulking of the claws 21 and 22 acting thereon. Note that, in the case 2, the circumferential portion near the claw 22 corresponds to the first fixing portion, and the circumferential portion near the claw 21 corresponds to the second fixing portion. In the above configuration, the base, the first fixing portion, and the second fixing portion described in the claims are formed by the case 2.
As a single unit.

FIG. 4 is a schematic diagram showing a perspective view of the airbag device 100, FIG. 5 is a schematic diagram showing a state in which the cover 8 is locked, and FIG. It is a schematic diagram. The cover 8 is formed in a box shape, and the first envelope 81
And the second enclosing part 82, in which the inflator 3, the case 2, the airbag 7 and the like are housed. The first envelope portion 81 and the second envelope portion 82 are hinged at a hinge portion 84 (see FIG. 4). A detachable engaging portion 85 is provided at a portion facing the hinge portion 84, and the first envelope portion 81 and the second envelope portion 82 are locked by the engaging portion 85 ( (See FIG. 5).

The airbag 7 is folded and housed in the cover 8, and a hole 71 is provided at an edge of an opening (not shown) of the airbag 7. The hole 71 is hooked on the screw portion 12 of the bolt 1 attached to the case 2. The screw 12 of the bolt 1 is inserted into the hole 83 of the cover 8, and the screw 12 is further inserted into the hole 9 of the frame 9 on the vehicle side.
1 and a nut (not shown) and the screw portion 12 are fastened. By fastening the nut and the screw portion 12, the airbag 7 is securely held between the case 2 and the cover 8, and the airbag device 100 is fixed to the vehicle-side frame 9.

Here, the order of assembling the airbag device 100 will be described. First, a case 2 formed in a cylindrical shape
The bolts 1 are mounted in the holes 20 from the inside, the respective heads 11 are hooked on the inner peripheral surface of the case 2, and the respective screw portions 12 protrude out of the case 2. Next, the inflator 3 is inserted into the case 2 from the end 31 side so that the gas injection unit 34 is located at the gas injection window 26. The inflator 3 is fixed to the case 2 by caulking the claws 21 and 22 inward in the radial direction, and the bolt 1 is fixed to the case 2.

Subsequently, the opening of the airbag 7 is
And the screw portion 12 of the bolt 1 is inserted into a hole 71 formed at the edge of the opening of the airbag 7.
Attach. Next, the cover 8 is opened with the hinged portion 84 as a center of rotation, and the screw portion 12 is attached to the hole 83 provided in the second envelope portion 82 of the cover 8.
Is projected outside the second envelope 82, the cover 8 is closed, and the first envelope 81 and the second envelope 82 are hooked as shown in FIG. 5, whereby the airbag device 100 is assembled. Then, the screw portion 12 protruding out of the cover 8 is attached to a hole portion 91 formed in the frame 9 of the vehicle, and the screw portion 12 is fastened using a nut. Thus, the airbag device 10
0 is fixed to the vehicle.

Next, the airbag device 1 having the above configuration
The operation of 00 will be described. When a collision of the vehicle is detected, power is supplied to a squib (not shown) in the main body 30 of the inflator 3 via the harness 5 and the connector 6, and the squib is ignited. Then, the explosive in the main body 30 is ignited, and the compressed gas is ejected. This gas is supplied to the gas outlet 33
The airbag 7 is introduced into the airbag 7 through the injection window 26 of the case 2 to inflate the airbag 7. Under the force of the inflation of the airbag 7, the cover 8 opens around the hinged portion 84 as a center of rotation, and the airbag 7 is deployed outside the cover 8 from the opened portion. At this time, the inflator 3 tries to move toward the connector 6 in the X-axis direction due to the ejection of gas, but the end 31 of the inflator 3
Since it is in contact with 1, movement in that direction is restricted. Further, even before the airbag device 100 is activated, when the inflator 3 attempts to move in the radial direction or the X-axis direction due to vibrations caused by the running of the vehicle, the claws 21,
Reference numerals 22 denote end portions 31 and 32 of the inflator 3 diagonally, respectively.
, The movement of the inflator 3 in those directions is restricted.

As described above, the claw 2 provided on the case 2
1 and 22 are swaged and end portions 31 and 32 of the inflator 3 are swaged.
The inflator 3 can be restricted to the case 2 without using fastening parts such as bolts, because the inflator 3 can be restricted from moving in the direction of the axis X and moving in the radial direction. The number of parts of the device 100 can be reduced. Further, since it is not necessary to fix the assembly bolt 1 to the case 2 by welding or press fitting, the bolt 1 can be easily connected to the case 2 without a welding machine or a press fitting device.
Can be fixed to The bolt 1 and the case 2 do not require dimensional accuracy, the bolt 1 and the case 2 can be easily processed, the number of steps for manufacturing and assembling the airbag device 100 can be reduced, and the low-cost airbag device 100 can be realized.

In the above embodiment, the claws 21 and 22 are caulked in a tapered shape. However, a structure in which the claws bent in a convex shape may be caulked. As an example, FIG. 7 schematically shows a configuration in which the nail 21 is bent in a convex shape. As shown in this figure, the same effect as in the above embodiment can be obtained by forming the claw 21 in a convex shape inside the case 2 and caulking it so as to abut the end 31 of the inflator 3 obliquely. Can be.
In the above embodiment, the movement of the inflator 3 in the direction of the gas injection portion 34 in the axis X direction and in the radial direction is restricted by the claw 22. However, instead of the claw 22, a projection is provided on the inner peripheral surface of the case 2. , The projections of the gas injecting section 3 in the axial X direction of the inflator 3
It is good also as a structure which restricts movement to the 4 side and the radial direction.

In the above embodiment, since only the bolt 1 is held, the bolt 1 may rotate when the screw between the bolt 1 and the nut is tightened, and good screw tightening may not be performed. Therefore, as shown in FIG. 8A, the curvature portion 11 having the same curvature as the outer peripheral surface of the inflator 3.
By forming “a” on the head 11 of the bolt 1, rotation of the bolt 1 at the time of screw tightening can be prevented. FIG. 8B schematically shows a state in which the inflator 3 is assembled to the case 2 using the bolt 1. As shown in this figure, even if the bolt 1 attempts to rotate, the rotation of the bolt 1 is restricted because the head 11 of the bolt 1 fits the curvature of the outer peripheral surface of the inflator 3. By doing so, the airbag device 100 can be more properly assembled. Also, by providing a square root in the bolt 1 and forming the hole 20 in the case 2 in accordance with the shape of the square root, the rotation of the bolt 1 during screw tightening can be effectively prevented.

(Second Embodiment) FIG. 9 is a schematic view showing the structure of a second embodiment, and FIGS. 10, 11, and 12 are sectional views taken along the line CC of FIG. It is the schematic diagram shown each. The feature of this embodiment is that the case 4 does not form a cylindrical structure as in the first embodiment, and is mainly a base (base) 43.
It is configured such that a gas lead-out section (first fixing section) 46 and a second fixing section 44 are provided thereon, and other configurations are the same as those in FIG. 1. As shown in FIG. 9, a hole 40 for mounting the bolt 1 is provided at a predetermined position of the base 43 of the case 4.
The head 11 of the bolt 1 is in contact with the main body 30 of the inflator 3, and the screw 12 of the bolt 1 projects outside the case 4. As shown in FIG. 10, a gas outlet 46 having a gas injection window 48 is provided at one end of the case 4 so as to surround the gas injection part 34 of the inflator 3, and an end surface 46 a of the body 30 on the side of the main body 30. Is inflator 3
Is in contact with the end surface 32a of the end portion 32, and the movement of the inflator 3 toward the gas ejection portion 34 in the axial X direction is restricted.
The gas injection window 48 is provided on the side opposite to the side of the harness 5 and has a function of guiding the gas ejected from the gas ejection holes 33 of the inflator 3 in a predetermined direction (the direction of the opening of the airbag). . A claw 41 is provided on the end surface 46a side of the gas lead-out portion 46, and is caulked in a tapered shape and is obliquely in contact with the end portion 32 of the inflator 3. This claw 41
The contact of the inflator 3 with the end portion 32 restricts the movement of the inflator 3 in the direction of the gas injection portion 34 in the axis X direction and in the radial direction.

At the other end of the case 4, a second fixing portion 44 having a slit-like opening 49 as shown in FIG.
Is provided so as to cover the main body 30 of the inflator 3. The second fixed portion 44 includes the end 31 of the inflator 3.
A plurality of claws 42 (two in FIG. 11) are provided at positions corresponding to. The crimps 42 are caulked inward in the radial direction so that the claws 42 abut the end 31 at an angle. This nail 4
2 restricts the movement of the inflator 3 in the radial direction with the side of the connector 6 in the direction of the axis X, and the head 11 of the bolt 1 causes the main body 30 of the inflator 3 to move by the caulking force.
Of the case 4 and the base 43 of the case 4 are fixed.

In the method of assembling the structure shown in FIGS. 9 to 12, first, the bolt 1 is attached to each hole 40 of the case 4 from the inside, and the screw portion 12 protrudes out of the case 4. . Next, the inflator 3 is mounted on the case 4 from the second fixing portion 44 side, the end surface 46a of the gas outlet portion 46 and the end surface 32a of the end portion 32 are brought into contact, and the gas injection portion 34 is inserted into the gas outlet portion 46. Be placed. Then, the claws 41 and 42 are each caulked radially inward, and at least one is caulked in a tapered shape so as to contact the end portion obliquely, thereby restricting the movement of the inflator 3 in the radial direction and the axis X direction. After the inflator 3 is fixed to the case 4 in this way, the airbag and the cover are assembled in the same manner as in the first embodiment, and fixed to a predetermined frame (not shown) of the vehicle as an airbag device.

The operation of the airbag device is as follows. First, when a collision of a vehicle is detected, a squib (not shown) in the main body 30 of the inflator 3 is connected via the harness 5 and the connector 6 as in the first embodiment. And the squib is ignited. Then, the explosive in the main body 30 is ignited, and the compressed gas is ejected. This gas is ejected from the gas ejection holes 33,
It is introduced into the airbag through the injection window 48 of the case 4 and inflates the airbag. Under the force of the inflation of the airbag, the cover opens around its hinged portion as the center of rotation, and the airbag is deployed from the opened portion to the outside. At this time, the inflator 3 is rotated by the gas X
Although the user tries to move to the direction connector 6 side, since the end portion 31 is in contact with the claw 42, the movement in that direction is restricted. Further, even in a state before the activation of the airbag device, the movement of the inflator 3 in the radial direction and the axis X direction due to vibration or the like during traveling of the vehicle is restricted by the claws 41 and 42.

Thus, with the above-described configuration, the inflator 3 can be satisfactorily fixed to the case 4 without using fastening parts such as bolts and nuts as in the first embodiment, so that the number of parts of the airbag device is reduced. it can. Further, since the bolt 1 can be easily fixed to the case 4 without depending on a method such as press-fitting or welding, the number of steps for manufacturing and assembling the airbag device can be reduced, and the cost can be reduced.

In the second embodiment, the claw 41 is provided on the end surface 46a of the gas outlet portion 46.
Even if a claw is provided on the end surface 46b on the side different from the above, and the claw is caulked to be obliquely abutted against the gas injection unit 34, the movement of the inflator 3 toward the gas injection unit 34 in the axial X direction is favorably controlled. be able to. In the second embodiment, the radial movement of the inflator 3 may be restricted by caulking the second fixing portion 44 provided with the slit-shaped opening 49 inward in the radial direction.

In the second embodiment, the inflator 3 having different outer diameters is used for the main body 30 and the gas injection section 34. However, the inflator 3 has the same outer diameter for the main body and the gas injection section. It may be configured. In this case, the claw formed on the gas outlet 46 must be provided on the end face 46b side. At this time, one of the claw and the claw 42 provided on the end surface 46b side may be formed radially inward so as to be substantially perpendicular to the axis X. By doing so, the inflator 3 is housed in the case 4 from a side different from the claw formed so as to be substantially perpendicular to the axis X, the inflator 3 is brought into contact with the claw, and the other claw is connected to the inflator 3. The inflator 3 can be fixed satisfactorily by caulking so as to abut the obliquely.

In the above-described second embodiment, each of the cylindrical cases 4 has an open end on both ends, but has a closed end on either the connector 6 side or the gas injection section 34 side. It may be configured. In this configuration,
It goes without saying that the inflator 3 is stored from the opening end side of the case 4.

In the second embodiment, the gas outlet 46
Although the configuration is such that the movement of the inflator 3 in the direction of the gas injection portion 34 in the axis X direction and in the radial direction is restricted by the claw 41 formed in the above-described configuration, the configuration shown in FIG. That is, the first inflator 3 extends in the circumferential direction so as to cover the end 32 thereof.
A fixing portion 45 is provided, and a claw 47 formed on the first fixing portion 45 is caulked in a tapered shape in a radially inward direction so as to abut the end portion 32 at an angle. Thereby, similarly to the configuration shown in FIG. 9, it is possible to regulate the movement in the axial X direction gas injection unit 34 side and the radial direction. Thus, by providing the first fixing portion 45 and the second fixing portion 44 and caulking the claws 47 and 42 formed respectively, the fixing of the bolt 1 and the movement of the inflator 3 in the radial direction are more effectively performed. Can be regulated. In particular, the first
By providing the fixing portion 45 and the second fixing portion 44 at locations corresponding to the positions of the bolts 1, the bolts 1 can be more effectively fixed to the case 4.

In the second embodiment, the case 4 has a length substantially corresponding to the position of the end 31 of the inflator 3 on the connector 6 side in the axial direction, but as shown in FIG. May be configured to have a length exceeding the end 31 on the side of the connector 6 in the axial direction. By doing so, the case 4 is positioned so as to surround the connector 6, so that when an external force acts on the vicinity of the connector 6, the connector 6 can be protected from the external force at that portion. Further, in each of the above-described embodiments, the claw is configured to be caulked in a tapered shape. However, the claw may not be tapered and may be any as long as it can be pressed in the bolt direction and the axial direction.

As described above, according to the present invention, the bolt is locked from the inside of the case, the inflator is placed on the head, and is held between the inner peripheral surface of the case and the outer peripheral surface of the inflator. By caulking the claws provided on the case radially inward and abutting the inflator at an angle, the bolts can be easily fixed to the case without the need for a press-fit device or welder. In addition, the number of assembly steps can be reduced, and the cost of the airbag device can be reduced. In addition, since the movement of the inflator in the radial and axial directions can be restricted by caulking the claws of the case without using fastening parts such as bolts and nuts, the number of parts of the airbag device can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a partial configuration of an airbag device according to a first embodiment of the present invention.

FIG. 2 is a schematic enlarged view of a portion A in FIG.

FIG. 3 is a schematic enlarged view of a portion B in FIG. 1;

FIG. 4 is a perspective view showing the overall configuration of the airbag device according to the first embodiment of the present invention.

FIG. 5 is a schematic enlarged cross-sectional view showing a configuration of a hook portion of a cover.

FIG. 6 is a schematic diagram showing a cross-sectional configuration near an assembling bolt.

FIG. 7 is a schematic view showing a modified example of a nail provided on a case.

FIG. 8 is a schematic diagram showing a configuration including a head of an assembling bolt formed in a shape corresponding to a curvature of an inflator.

FIG. 9 is a schematic diagram showing a partial configuration of an airbag device according to a second embodiment of the present invention.

FIG. 10 is a schematic view showing a cross section taken along line CC in FIG. 9;

FIG. 11 is a schematic diagram showing a view taken in the direction of arrow D in FIG. 9;

FIG. 12 is a perspective view showing a partial configuration of an airbag device according to a second embodiment of the present invention.

FIG. 13 is a schematic diagram showing a configuration in which an inflator is fixed by a first fixing portion and a second fixing portion provided in a case in the airbag device according to the second embodiment of the present invention.

FIG. 14 is a schematic view showing a configuration in which a case is provided so as to surround a connector in the airbag apparatus according to the second embodiment of the present invention.

FIG. 15 is a schematic sectional view showing the configuration of a conventional airbag device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Assembly bolt 2, 4 Case 3 Hybrid inflator 5 Harness 6 Connector 7 Airbag 8 Cover 9 Frame 11 Bolt head 12 Screw part 20 Hole 21, 22, Claw 23, 24 Joint 25 Opening 26 Gas injection window 30 Part 31, 32 End part 33 Gas ejection hole 34 Gas injection part 44 Second fixing part 45 First fixing part 81 First wrapped part 82 Second wrapped part 84 Hinged part 85 Engagement part 100 Airbag device

Claims (4)

[Claims] 1. An airbag device comprising: a tubular inflator for injecting a gas in response to an ignition signal; an airbag inflated and deployed by the gas; and holding means for fixing the inflator. The inflator is formed with an injection section for injecting the gas at one axial end of the cylindrical shape, and has a first end face and a second end face facing the first end face in the axial direction. Means, a base portion for installing the inflator, and a first fixing portion formed on the base portion, which abuts on the first end surface of the inflator or an edge thereof, and regulates movement of the inflator in the axial direction, Covers the peripheral surface of the inflator, restricts radial movement of the inflator, and abuts on the second end surface or an edge thereof to form an axial direction of the inflator. And a second fixing portion for restricting the movement of the bolt, and a head of a bolt for penetrating the base of the holding means and fixing the holding means is sandwiched between the inflator and the base. An airbag device characterized by the above. 2. The first fixing portion or the second fixing portion of the holding means is formed integrally with the base, and has a claw bent at a peripheral portion of the first end surface or the second end surface. The movement of the inflator in the axial direction and the radial direction is regulated by making an oblique contact with the first end face or the edge thereof, or the second end face or the edge thereof. Airbag equipment. 3. The airbag device according to claim 2, wherein the first fixing portion, the second fixing portion, and the base are integrally formed in a cylindrical shape. 4. The airbag device according to claim 2, wherein the claws of the first fixing portion and the second fixing portion are formed in a tapered shape.