JPH10181517A - Air bag device and gas generater therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air bag device where a gas generater itself can be designed in a short time even when the kind and quantity of a gas generating agent differ, and can be compactly installed even in a narrow instrument panel as a light four wheel car. SOLUTION: An air bag device is composed of an air bag 1; a conduit tube 2 for introducing a high pressure developing gas into the air bag 1; a gas generater 3 for supplying the high pressure gas into the conduit tube; and a cooling filter member 5 arranged between the gas generater 3 in the conduit tube 2 and the air bag 1. The gas generater 3 is composed of an igniter; a gas generating agent which is ignited by an igniting device to generate the high pressure gas; and a housing to receive above components.

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 as an occupant protection device for an automobile, and more particularly to an airbag device in which a gas generator can be easily designed and manufactured and can be easily installed even in a narrow place. It is.

[0002]

2. Description of the Related Art In a conventional general airbag device, an airbag and a gas generator are integrally mounted to form an airbag module, which is disposed in a steering wheel or an instrument panel in front of a passenger seat. Is generally used. As the gas generator in this case, there are a gas generating agent system in which an explosive composition is loaded as a gas generating agent, and a hybrid system in which a high-pressure gas cylinder filled with an inert gas and the gas generating agent are used in combination. Although there is a disadvantage that the weight becomes large and the whole becomes large, it has an advantage that the price is lower than the former. On the other hand, the former
It has the advantage of being smaller than the latter, but has the disadvantage of being relatively expensive. Therefore, at present, one is selected depending on which advantage is pursued for each vehicle type. However, in any case, the size is limited due to space restrictions, and there is an increasing demand for further miniaturization in spite of the gas generating agent system. In particular, in the tide of standardization of airbags for passenger seats, mini-cars will be required to be equipped with airbag devices for passenger seats,
Since the size of the instrument panel is different between a standard car and a mini car, there is an urgent need to reduce the size of the passenger airbag device. Furthermore, a side collision airbag device for responding to a side collision is also standard equipment in some models, and in order to be mounted in a narrow space at the side of the seat, an increasingly smaller size is required. In addition, airbag devices are being installed in some areas as occupant protection devices for the rear seats, but airbag devices for the rear seats will be installed behind the front seats. The demand for miniaturization of the bag device has become a very important issue.

However, the airbag module has a structure in which the airbag and the gas generator are integrated, and in order to reduce the size of the airbag module, it is also necessary to reduce the size of the airbag to reduce the required gas generation amount. Although it is conceivable, the size of the airbag itself tends to be increased from the viewpoint of occupant safety.
As a result, a method of deploying a large airbag with a small gas generator is required, and a method of reducing the size of the gas generator using an explosive composition having a higher gasification rate than conventional metal azide compounds. Therefore, many organic compound-based gas generating agents that dramatically increase the gasification rate of gas generating agents by using nitrogen-containing organic compounds such as tetrazole, guanidine, and azodicarbonamide as fuel are proposed. Have been.

However, in the case of these organic compound type gas generating agents, compared with the case of the conventional metal azide compound,
Generally, the combustion temperature tends to increase. Therefore, in order to reduce the high-temperature generated gas to a predetermined temperature and supply it to the airbag, it is necessary to increase the filling amount of a cooling member such as a wire mesh,
As a result, there is a limit in miniaturization of the gas generator at present.

[0005] Therefore, the applicant first separated the configuration of the airbag device including the airbag, the gas generator, and the housing, placed only the airbag in the instrument panel, and set the gas generator to A method has been proposed in which the components are arranged in another location and connected to each other by a duct to reduce the size of the components disposed in the instrument panel, which has many spatial restrictions (Japanese Utility Model Laid-Open No. 7-19021). This method is
As shown in FIG. 7, the passenger airbag device 21 includes a retainer 26 and a cylindrical duct 22.
An airbag storage section 28 is provided at an opening at the distal end of the duct 22, and the airbag 1 is disposed here in a folded state. Further, a disc-shaped gas generator 23 is attached to the other end side of the duct 22, and a cover 27 is attached to the airbag side so as to be fitted into the instrument panel. It is mounted inside the instrument panel, and the other parts are arranged at appropriate places in front of the vehicle body.

[0006] This system achieves downsizing by substantially using only airbags as components disposed in the instrument panel, and the gas generator is a small disk-type gas for a driver's seat. Although the gas generator is diverted to standardize the gas generator, various problems have been encountered in realizing the standardization. First, the mainstream of the gas generating agent is changed from the conventional harmful metal azide compound to a harmless organic compound, and as a result, the generated gas is heated to a high temperature, thereby cooling the generated gas and removing the contained slag component. The performance and structure of the cooling and filter members must be greatly improved, and the combustion characteristics vary greatly depending on the type and composition of the organic compound explosive composition, making it difficult to uniformly control the combustion. As a result, the above-described conditions act in combination depending on the required airbag capacity, and as a result, it has become impossible to simply use the gas generator for the driver's seat as it is for the passenger's seat.

[0007]

In the structure of the conventional gas generator, if the type and amount of the gas generating agent are different, the combustion control method and the performance and structure of the cooling / filter member are greatly changed, resulting in gas generation. Since the shape and structure of the gas generator itself will be greatly affected, it will take a lot of time and money to develop a gas generator corresponding to the required airbag capacity, and until various data are available. It was impossible to fix the shape and structure of the gas generator. Furthermore, since it is usual to start the design and manufacture of the production equipment after the shape and structure of the gas generator are determined, it takes a considerable period from development to production. Therefore, the present invention
The primary purpose is to make it possible to design the gas generator itself in a short period of time, even if the type and amount of the gas generating agent are different, and furthermore, as mentioned above, inside the instrument panel of the mini car and on the side of the seat It is a second object of the present invention to provide a compact airbag device which can be installed in a narrow place as described above and a gas generator used for the device.

[0008]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, an airbag apparatus according to the present invention comprises an airbag, a conduit for introducing a high-pressure gas for deployment into the airbag, and a high-pressure gas in the conduit. And a cooling / filter member disposed between the gas generator in the conduit and the airbag, wherein the gas generator is ignited by the ignition device and ignited by the ignition device. It comprises a gas generating agent for generating high-pressure gas and a housing for accommodating them. That is, the installation location of the airbag and the gas generator are different, and high-pressure gas generated by the gas generator is supplied to the airbag through a conduit, and the gas generator is
It is composed of only an ignition device and a gas generating agent, and the cooling / filter member is separated from the gas generator and installed in the conduit, thereby reducing the installation space of the airbag portion, It can be installed in narrow places.

[0009] The structure of the gas generator is a double cylinder structure with a lid comprising an inner cylinder and an outer cylinder, wherein the ignition device is disposed in the inner cylinder, and the gas generating agent is interposed between the inner and outer cylinders. The inner cylinder is provided with a spark hole, and the outer cylinder is loaded with a disk-type gas outlet or a gas generating agent, and a number of small holes are formed in the wall surface. Inner cylinder, an ignition device disposed at one end of the inner cylinder, and an outer cylinder surrounding the inner cylinder via a space, a double cylindrical type, or a combustion chamber in an axial direction in a cylindrical housing. A single cylinder type that is divided into a space and can be used. By removing the cooling / filter member from the gas generator body, the structure of the gas generator can be simplified and the design can be simplified. I have to.

[0010] A rupturable plate, which bursts when the inside of the housing of the gas generator reaches a predetermined pressure, is attached to the inside of the gas discharge hole of the gas generator, so that the combustion characteristics depending on the amount and type of the gas generating agent. Can be easily controlled.

An air suction hole is formed at an appropriate position in the conduit so that air is sucked into the conduit by a high-pressure gas flow in the conduit, so that a large-capacity airbag can be developed with the same gas generator. Is also possible.

Furthermore, the conduit is divided into three parts: a downstream part connected to an airbag, a middle part filled with the cooling / filter member, and an upstream part provided with the gas generator. It is also possible to standardize and speed up design. Also, by forming a bent portion in this conduit, the slag removing effect in the conduit can be enhanced.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing a structure in which an airbag device according to the present invention is applied to a passenger seat. The airbag 1 is sandwiched between a retainer 6 and a retainer ring 11 and is appropriately fixed with rivets or the like. Means 8
The cover member 7 is similarly fixed to the retainer 6 by appropriate fixing means 9 such as rivets. That is, only the airbag 1 and the cover member 7 are mounted on the retainer 6. This cover member 7
The components of the airbag 1, the retainer 6, and the airbag 1 are fitted into the instrument panel 4, and when the airbag is deployed, the cover member 7 is torn along the breaking groove 7 a formed at an appropriate position on the back surface of the cover member 7. The airbag 1 is configured to deploy toward a passenger on the passenger seat.

On the other hand, the lower part of the retainer 6 is
12a of conduit 2 for introducing high pressure gas for expansion
Is connected to In the illustrated case, the retainer 6 and the flange 12a of the conduit 2 are fixed to each other with the fixing means 8 for fixing the airbag 1 to the retainer 6 and the retainer ring 11 as a common fixing means. Needless to say, the fixing means may be independent. The conduit 2 comprises three components: a downstream portion 2c on the airbag side, an upstream portion 2a on which the gas generator 3 at the end is mounted, and a midstream portion 2b on which the cooling / filter member 5 is mounted. These three parts are connected to a flange 12 provided at the connection end.
b, 13a, 13b, and 14a are connected by an appropriate connecting tool such as a bolt.

The upstream part 2a connected to the gas generator 3 is:
It comprises a box 17 on which the gas generator 3 is mounted and a supply pipe 15 for supplying gas from the box 17 to the cooling / filter member 5, both of which are fixed by a suitable fixing means by a flange 14b. . The upstream part 2a to which the gas generator 3 is mounted and the middle part 2b to which the cooling / filter member 5 is mounted are attached to an appropriate position on the vehicle body such as an engine room near the instrument panel or a lower part in the vehicle. Mounted by

A plurality of slits 10 are formed at appropriate positions of the supply pipe 15 in the upstream section 2a.
During operation of the gas generator, the high-pressure gas ejected from the gas discharge port 3a of the gas generator is first pressure-equalized in the box 17 and then supplied through the supply pipe 15 to the midstream section 2a.
By flowing toward b, air is suctioned from the opening 10a by the venturi action to increase the gas amount,
At the same time, the gas temperature is lowered to flow into the cooling / filter member 5. That is, the opening 10a serves as an air suction hole, and is provided when the air suction method is employed. When the air suction method is not employed, it is not necessary to provide the opening 10a. Absent. In order to prevent gas from flowing out of the opening 10a at the initial stage of gas generation, a sheet check valve may be provided on the outer surface of the opening 10a. In addition, as a result of the gas from the gas generator 3 being ejected toward the wall surface of the box 17, a part of the slag component contained in the gas is trapped by the wall surface.

Next, the middle part 2b of the conduit 2 is filled with a cooling / filter member 5, and flanges 13 are provided at both ends.
a, 13b, wherein the cooling / filter member 5 cools the high-temperature, high-pressure gas supplied from the gas generator 3 to a temperature suitable for deployment of the airbag,
It has the function of removing the slag component contained in the gas, and has the same function as the cooling and filter member arranged in the conventional gas generator, but in the present invention, As is apparent from the structure of the gas generator described later, the middle part 2b of the conduit 2 is independent of the gas generator.
Are located in Therefore, a gas generator formed of the same material as the cooling / filter member disposed in the conventional gas generator can be used. In the present invention, since the conduit 2 itself also has a cooling effect for high-temperature gas and a slag removing effect, a smaller amount of cooling / filtering is required for the same and the same amount of gas generating agent than in the gas generator. With the member, it is possible to generate a gas having the optimum temperature and cleanliness for airbag deployment.

Next, the structure of the gas generator used in the present invention will be described. FIG. 2 is a cross-sectional view of a main part showing an embodiment of the present invention.
2a and an outer cylinder 32b, and a lower lid 36c, an inner cylinder 36a, an outer cylinder 36b, and a mounting flange 39.
And a lower container 36 composed of the inner and outer cylinder end faces butted by friction pressure welding. The inner cylinder inner space is a space serving as an ignition chamber P, and an ignition device 38 including a squib 38a and a transfer charge 38b is arranged. The annular space R between the inner and outer cylinders is a space serving as a combustion chamber, and is loaded with the gas generating agent 37. The ignition chamber P and the combustion chamber R are communicated with each other by a transmission hole 34 formed in the inner cylinder, and the high-temperature flame generated in the ignition chamber P flows into the combustion chamber R and ignites the gas generating agent 37. Has become. The high-temperature and high-pressure gas generated by the combustion of the gas generating agent 37 is supplied to the gas discharge holes 3 formed in the outer cylinder 32b.
5 to the outside. A rupturable plate 33 made of aluminum or graphite sheet or the like is stuck to the inner surface of the gas discharge hole 35, and always serves to block the gas generating agent 37 from the outside air. By bursting after the internal pressure reaches a predetermined pressure, the function of adjusting the combustion speed by maintaining the pressure in the combustion chamber at a predetermined pressure is achieved.

The gas generator 3 does not include the cooling / filter member of the ordinary gas generator, so that the high-temperature and high-pressure gas generated by the gas generator 3 is not cooled and contained. The slag component is removed from the gas discharge hole 35 into the conduit 2 without being removed.

The slag-containing high-temperature gas is supplied to the cooling / filter member 5 disposed in the middle part 2b of the conduit 2 shown in FIG.
, Where it is cooled to a predetermined temperature and the slag contained is removed. The cooling / filter member 5 used here is made of a wire mesh, ceramics or the like which has been used conventionally, and it is not necessary to use a special one.

As described above, according to the present invention, as a result of separating the gas generator and the cooling / filter member, the specifications required for the gas generator in the development of the gas generator are, ultimately, only the amount of generated gas, that is, Since only the charged amount of the gas generating agent is used, it is only necessary to determine the capacity of the combustion chamber R. conventionally,
It is necessary to design the gas generator so that the gas to be ejected from the gas generator, that is, the gas temperature and the slag content are mainly at predetermined values. For this purpose, specify the amount and type of cooling / filter members. If the amount and type of the cooling / filter members change, the dimensions of the gas generator will change.Therefore, it is necessary to perform detailed design of the gas generator by repeating various trial and error. The development of the gas generator required a long period of time and huge development costs. However, according to the present invention, when the explosive composition of the gas generating agent is selected, since the gas composition and the amount of generated gas per unit weight are determined, it is easy to select the amount of the gas generating agent with respect to the required gas amount. ,
The shape and dimensions of the gas generator can also be easily determined without requiring many experiments. As a result, the development period of the gas generator can be shortened, and the development cost can be significantly reduced. As a result, the cost of the gas generator itself can be significantly reduced.

Further, the degree of gas cooling and the degree of slag removal are determined by the amount of the cooling / filter member to be filled in the midstream portion 2b of the conduit 2. Therefore, an experiment in which the charged amount is appropriately changed is carried out. Separately from the specifications of the generator, it is possible to easily determine the specifications of the cooling / filter member. In particular, since the conduit itself also has a cooling function and a slag removing function (adhering the slag to the inner surface of the conduit), the amount of the cooling / filter member is smaller than that of the case where the cooling / filter member is installed in the conventional gas generator. Can be reduced. Further, by bending the conduit 2 on the way to form a bent portion, it is possible to increase the frequency of the gas flow colliding with the tube wall of the conduit 2 and further enhance the slag collecting effect by the tube wall of the conduit. .

The retainer 6 with the airbag 1 attached thereto
When a slit-shaped opening is formed in the vicinity of the flange 12a of the downstream portion 2c of the conduit 2 connected to the air inlet 2 and the air suction hole 10b is arranged, the same as the air suction hole 10a formed in the upstream portion 2a is used. In addition, when the airbag is deployed, the air is sucked by the Venturi effect to increase the gas supply amount to the airbag and to lower the gas temperature. When the air suction system is not used, the opening 10b is unnecessary, and when the air suction hole is arranged in the upstream portion 2a, the air suction hole in the downstream portion 2c can be omitted. is there.

Also, as shown in FIG. 3, the shape of the retainer ring 11 for holding the airbag 1 together with the retainer 6 is a pair of glasses having a collision plate 19 at the center and openings 18 on both sides thereof. The gas flowing from the conduit 2 into the airbag collides with the central collision plate 19 and is rectified so as to flow into the airbag 1 from the left and right openings 18. Will be prevented.

Next, FIG. 4 is a sectional view of a main part showing a modified example of the connection portion between the airbag portion and the conduit in FIG. 1. A flange 6a is formed at the lower end of the retainer 6, and the flange is directly connected. The airbag 1 is fixed in place on the vehicle body, and is held between a retainer 6 and a retainer ring 11 formed of an elastic body such as heat-resistant rubber and fixed by fixing means 8 such as bolts. Here, the inner diameter portion 11a of the retainer ring 11 is a small diameter portion slightly smaller than the conduit 2, and the small diameter portion 11a
The most downstream part of the conduit 2 is inserted therein. Thereby, since the connection between the conduit and the airbag section is merely insertion, the attachment is easy, and the difference in the natural frequency between the conduit section and the airbag section caused when the conduit section and the airbag section are fixed. The effect of eliminating the stress generated at the connection portion is expected.

FIG. 5 is a cross-sectional view showing a main part of another embodiment of the gas generator used in the present invention, in which an inner cylinder 41 loaded with a gas generating agent (not shown), This is the space 42
, An ignition device 48 including a squib 48 a and a transfer charge 48 b is disposed at one end of the inner cylinder 41. At the other end, a flange 46 connected to a conduit for supplying high-pressure gas to the airbag is formed, and a gas passage 47 opening toward the conduit and a space 42 between the inner and outer cylinders are formed. Are communicated with each other by a communication hole 44 formed in a holding cylinder 49 for holding the distal end of the inner cylinder. When gas is generated, the ignition device 48
When the gas generating agent in the inner cylinder 41 is ignited, a rupture plate (not shown) adhered to the inner surface of the inner cylinder so as to close the many small holes 45 formed in the wall surface of the inner cylinder 41. When the pressure reaches a predetermined pressure, the gas ruptures, and high-pressure gas is ejected from the small holes 45 to equalize the pressure in the space 42.
As described above, the high-pressure gas cooled and slag-removed by the cooling / filter member installed in the conduit flows into the airbag and deploys the airbag.

Also in this embodiment, the cooling / filter member is
Since the gas generator is installed in the conduit as a separate component from the gas generator, development and design of the gas generator are facilitated as in the case of FIG. Also, in the space 42 between the inner and outer cylinders, the high-pressure gas containing the slag spouted from the inner cylinder 41 collides with the inner wall surface of the outer cylinder 43 to remove a part of the contained slag. This is the same as the case of the box 17 described above.

FIG. 6 is a sectional view showing a main part of another embodiment of the gas generator used in the present invention, which is an elongated one having an opening at one end and an open end at the other end. A long cylindrical housing 51 is formed by the cylinder 51a and the lid member 51b that is frictionally pressed to the open end, and the inside of the housing is defined by an annular partition member 54 disposed at an axially intermediate portion in the figure. It is divided into two chambers, a right combustion chamber R and a left space S in the figure. The gas generating agent 37 loaded in the gas generating agent container 59 is loaded into the combustion chamber R, and an ignition device 58 is loaded at an end thereof. Note that a cushion material 60 is disposed between the partition member 54 and the gas generating agent container 59. On the other hand, a plurality of gas discharge holes 55 are formed on the space S side of the housing, and a rupturable plate 53 made of aluminum foil or the like is adhered to the inner surface so as to close the gas discharge holes 55. Further, the partition member 54 and the housing 5
1 is firmly integrated by caulking and reducing the diameter of the housing 51 from the outer periphery.
1 on the outer surface near the boundary between the space S and the combustion chamber R,
A mounting member 5 for mounting the gas generator 3 to the conduit 2
6 are provided, and in this example, a screw portion 56a for being inserted into the conduit and screwed is formed.

When this gas generator operates, the high-temperature and high-pressure gas ejected from the combustion chamber R into the space S through the inner hole 54a of the annular partition member 54 is equalized in the space S, and the pressure is reduced. When the pressure reaches a predetermined pressure, the rupturable plate 53 is broken, and the rupture plate 53 is blown out from the gas discharge hole 55 in a state where the slag is contained at a high temperature in the conduit. After being cooled and slag-removed by the filter member, it is supplied into the airbag connected to the downstream portion of the conduit.

In the above example, an example in which one gas generator is arranged has been described. However, it is also possible that a plurality of gas generators are arranged in the box 17 and used. Needless to say. Further, it goes without saying that the method of the present invention can be applied not only to the airbag device for the passenger seat but also to the airbag device for the driver's seat, the airbag device for the side collision, the airbag device for the rear seat, and the like.

[0031]

As described above, the airbag apparatus according to the present invention connects the airbag and the gas generator for supplying the high-pressure gas to the airbag by a conduit serving as a gas passage. Since the cooling / filter member that cools the gas and removes the slag in the gas that is integrated into the gas generator is arranged independently of the gas generator, the instrument panel Since the gas generator is not included in the portion arranged in the narrow space of the vehicle and only the airbag is provided, the narrow space such as the instrument panel of a small car such as a mini car, the back of the front seat or the side of the seat, etc. It is possible to easily install an airbag inside.

Further, since the gas generator and the cooling / filter member are separated from each other, the gas generator can be designed separately for cooling the gas and removing the slag. Basically, it is only necessary to design in consideration of the gas generation amount, so that the development and design period of the gas generator is shortened, and the cost and standardization of the gas generator can be reduced. In addition, gas cooling and slag removal are performed by independent cooling and filter members, and there are no more restrictions on space and material as compared with the case where these are arranged in a gas generator. Can be expected to be remarkably easy. Furthermore, since the conduit itself also has a cooling function and a slag removing function, the amount of the cooling / filter member is smaller than that in the case where it is disposed in the gas generator, which also reduces the cost of the airbag device. It is expected to contribute.

Further, by forming an air suction hole at an appropriate position in the conduit, it is possible to increase the amount of gas supplied to the airbag and deploy the airbag. Therefore, it is possible to deploy a large-capacity airbag with a small gas generator.In the case of a small airbag, there is no air suction hole in the conduit, and in the case of a large airbag, an air suction hole is formed. By doing so, it becomes possible to deploy various airbags with the same gas generator, and standardization of the gas generator is facilitated.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an airbag device according to the present invention.

FIG. 2 is a sectional view of a main part showing an example of a gas generator according to the present invention.

FIG. 3 is a plan view showing an example of a retainer ring used in the airbag device shown in FIG.

FIG. 4 is a sectional view of a main part showing an example of a connecting portion between the airbag and the conduit according to the present invention.

FIG. 5 is a sectional view of a main part showing another embodiment of the gas generator according to the present invention.

FIG. 6 is a sectional view of a main part showing still another embodiment of the gas generator according to the present invention.

FIG. 7 is a conceptual diagram showing a conventional separated type passenger airbag device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airbag 2 Conduit 2a Upstream part of conduit 2b Middle part of conduit 2c Downstream part of conduit 3 Gas generator 5 Cooling / filter member 10a, 10b Air suction hole 31 Housing of gas generator 32 Upper container of housing 33 Rupture plate 34 Fire port 35 Gas discharge hole 36 Lower container of housing 37 Gas generating agent 38, 48, 58 Ignition device 41 Inner cylinder 43 Outer cylinder P Ignition chamber (inner cylinder inner space) R Combustion chamber (annular space) S space

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaharu Kakitani 174-1 Mikaihara, Inayoshi, Chiyoda-machi, Niigata-gun, Ibaraki Prefecture Inside the Tsukuba Office of Sensor Technology Co., Ltd. 174-1 Mukohara Sensor Technology Co., Ltd. Tsukuba Office (72) Inventor Noriyuki Matsuda 174-1 Munihara Kami Inayoshi, Chiyoda-cho, Shinji-gun, Ibaraki Pref. Sensor Technology Co., Ltd. Tsukuba Office

Claims (19)

[Claims] An airbag (1), a conduit (2) for introducing a high-pressure gas for deployment into the airbag, a gas generator (3) for supplying a high-pressure gas into the conduit (2), A cooling and filter member (5) disposed in the conduit, wherein the gas generator (3) comprises an ignition device (38, 48, 58).
An airbag device comprising: a gas generating agent (37) ignited by the ignition device to generate a high-pressure gas; and a housing for accommodating the gas generating agent (37). 2. The gas generator housing (31).
Are the inner cylinder (32a, 36a) and the outer cylinder (32b, 36b)
The ignition device (38) is disposed in the inner cylinder, the gas generating agent (37) is disposed between the inner and outer cylinders, and a spark port ( 3
4. The airbag device according to claim 1, wherein 4) is formed, a gas discharge hole (35) is formed in the outer cylinder, and the gas generator has substantially no cooling / filtering member. 3. A rupturable plate (33) is stuck and sealed inside the gas discharge hole (35), and the rupturable plate ruptures when the inside of the housing reaches a predetermined pressure, and the gas is ruptured. The airbag device according to claim 2, wherein the high-pressure gas generated in the generator is discharged into the conduit (2). 4. The gas generator includes an inner cylinder (41) having a gas generating agent loaded therein and having a plurality of small holes (45) formed in a wall surface, and an ignition device (1) disposed at one end thereof. 4
8), an outer cylinder (43) surrounding the inner cylinder via a space (42), and a connecting member (46) for connecting the conduit (2) formed at the other end. 2. The airbag device according to claim 1, wherein the airbag device has substantially no members. 5. The small hole (45) of the inner cylinder (41) is sealed by a rupturable plate disposed on the inner wall surface of the inner cylinder, and the rupture plate bursts when the inner cylinder reaches a predetermined pressure. The airbag device according to claim 4, wherein the high-pressure gas generated in the inner cylinder is discharged into the conduit (2) through the space (42) between the inner and outer cylinders. 6. The gas generator is axially divided into a combustion chamber (R) and a space (S) in a cylindrical housing (51) by a ring member (54). ) Side, the ignition device (58) is mounted, the other end on the space (S) side is sealed, and the gas discharge hole (55) is provided in the space (S) portion of the housing. A gas generating agent (37) is loaded in the combustion chamber (R), and the space (S) side of the housing is connected to the conduit (S) at an appropriate position in the housing (51). (2) A fixing member (5) to be inserted into and fixed to the conduit.
6. The airbag device according to claim 1, wherein (6) is provided, and the cooling / filter member is substantially absent. 7. A rupturable plate (53) is adhered and sealed to an inner wall surface of the gas discharge hole (55) of the space (S), and the rupturable plate has a predetermined pressure in the space. The airbag device according to claim 6, wherein the high pressure gas generated in the combustion chamber (R) by being ruptured upon reaching is discharged into the conduit (2). 8. The conduit (2) includes a downstream part (2c) connected to the airbag (1), a middle part (2b) filled with the cooling / filter member (5), and the gas generator. The airbag device according to any one of claims 1 to 7, wherein the airbag device is divided into three parts: an upstream part (2a) where the part (3) is mounted, and a conduit formed by connecting these three parts. 9. An air suction hole (1) in an appropriate position of said conduit (2).
9. The airbag device according to claim 1, wherein the airbag device is formed so that air is sucked into the conduit by the high-pressure gas flow in the conduit. 10. The airbag device according to claim 8, wherein an air suction hole (10a) is formed in the upstream portion (2a) of the conduit. 11. The airbag device according to claim 8, wherein an air suction hole (10b) is formed near an airbag mounting portion in the downstream portion (2c) of the conduit. 12. The airbag device according to claim 1, wherein the conduit (2) has a bent portion. 13. The airbag device according to claim 1, wherein the airbag device is a passenger seat airbag device. 14. The airbag device according to claim 1, wherein the airbag device is a driver seat airbag device. 15. The airbag device according to claim 1, wherein the airbag device is a rear seat airbag device installed on the back of a front seat. 16. The airbag device according to claim 1, wherein the airbag device is a side collision airbag device. 17. An upper container (32) having an inner cylinder (32a) and an outer cylinder (32b), and inner and outer cylinders (36a, 36) corresponding to the inner and outer cylinders (32a, 32b) of the upper container.
b) to form a housing (3) by butt-joining the lower container (36) having an inner casing (36) and an ignition device (38) in an inner cylinder inner space (P) in the housing; In the annular space (R) formed between the gas generating agent (3)
7), a spark port (34) communicating the inner cylinder inner space (P) and the annular space (R) is formed in the inner cylinder, and a gas for jetting high-pressure gas is formed in the outer cylinder. Release hole (3
5) is formed, and a rupturable plate (33) that ruptures and opens at a predetermined pressure is adhered to the inner surface of the gas discharge hole, thereby substantially cooling and releasing.
Gas generator characterized by having no filter member 18. An inner cylinder (41) in which a gas generating agent is loaded and a number of small holes (45) are formed in a wall surface, an ignition device (48) disposed at one end thereof, and the inner cylinder. A gas generator comprising an outer cylinder (43) surrounding through a space (42) and having substantially no cooling / filtering member 19. A cylindrical housing (51) is axially partitioned into a combustion chamber (R) and a space (S) by a ring member (54), and one end of the combustion chamber (R) is ignited. A device (58) is mounted, the other end of the space (S) side is sealed, and a gas discharge hole (55) is formed in the space (S) of the housing. Characterized by having a gas generating agent (37) loaded therein and having substantially no cooling / filtering member