JPH07117616A - Airbag device - Google Patents

Abstract

PURPOSE:To purify gas discharged from an airbag to the outside, following the operation of the airbag. CONSTITUTION:A gas purifying means 50 composed of a vessel 52 with ventilation property and storing a gas purification agent 53 is provided in a gas stream passage near the gas spouting port 21 of an inflator 20. The inflator 20 generates gas based on the signals from various kinds of sensors in the case of the collision of a vehicle and spouts the gas from a spouting hole 21 radially. The spouted gas is filled in an airbag 30 through a vessel 54 storing the purification agent 53 and expands the airbag 30. At this time, harmful gas contained in the gas filled in the airbag 30 is purified by the purification agent 53 in the vessel 52 in accordance with its passing through the inside of the vessel 50. The airbag 30 discharges the purified inner gas from a discharge port 31 into the room of the vehicle and then shrinks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bag device for protecting an occupant by an air bag that is operated by gas generated from an inflator when a vehicle crashes, for example, a structure for purifying gas for operating the air bag. Regarding

[0002]

2. Description of the Related Art In recent years, an airbag for protecting a passenger's body, particularly a head and a chest, from a secondary collision as a cushioning system for supporting a seat belt device for holding an occupant in a seat at the time of collision of a vehicle such as an automobile. The device has been put to practical use. The airbag device instantly inflates and expands the folded airbag into a balloon shape by the gas generated from the inflator at the time of a vehicle collision, receives the occupant's head and chest, and discharges the gas to the outside. Thus, the airbag is gradually contracted to reduce the impact on the head and chest of the occupant.

In such an airbag device, the gas generated from the inflator is discharged to the outside, that is, the passenger compartment as the airbag is contracted after being filled in the airbag. Therefore, it is desirable that the gas be as clean as possible when it is discharged from the airbag.

As a gas generating agent for generating a gas used for inflating / deploying an airbag, there are a sodium azide type composition, a nitrocellulose type composition and the like, and a gas is generated by burning these. Nitrogen is the main component of the gas generated by the combustion of the sodium azide-based composition, and there is no particular problem even if nitrogen is discharged from the airbag into the passenger compartment. Further, the main component of the gas generated by the combustion of the nitrocellulose-based composition is carbon dioxide, and there is no problem even if it is discharged into the vehicle interior. However, in any of the gas generating agents, the combustion gas also contains harmful gas such as carbon monoxide. None of this kind of harmful gas is generated enough to adversely affect the human body,
It is better not to be discharged into the passenger compartment. Therefore, conventionally, as an airbag device, it has been proposed to store a product capable of absorbing or dissociating harmful gas in an airbag (see Japanese Patent Application Laid-Open No. 3-153439). Such products include activated carbon, manganese, copper,
Cobalt and silver oxides are illustrated.

Further, there is an inflator in which a purifying material for ejected gas is attached at a position facing the gas ejection port (see Japanese Patent Laid-Open No. 2-182855). When the gas from the ejection port collides, this purifying agent collects the solids such as the residue of the gas generating agent and by-products, and reduces the scattering amount of the solids into the vehicle interior. Furthermore, as a purification material,
It is also disclosed that a filter material such as a net is provided so that the gas from the gas ejection port passes through the filter material.
This filter material has the effect of removing dust from the ejected gas, and lowers the gas temperature.

[0006]

However, of the conventional air bag devices described above, the former device does not describe any specific structure for accommodating a product that adsorbs or dissociates harmful gas in the air bag. No, it is not clear how effectively harmful gases can be adsorbed or dissociated.

The latter device is constructed for the purpose of collecting the solid matter contained in the gas ejected from the inflator by the purifying material, and this construction cannot purify the gas components.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide an airbag device capable of purifying the gas discharged from the airbag to the outside with the operation of the airbag. It is in.

[0009]

The above object of the present invention is to mount an inflator on a vehicle to generate gas in an emergency, to inflate the gas generated from the inflator to inflate and deploy it from a folded state, and to inflate after expansion. In an airbag device having an airbag that discharges gas to the outside and contracts, a gas purifying means that stores a gas purifying agent in a form that can be ventilated in a container having air permeability is provided in the vicinity of the gas ejection port of the inflator. This is achieved by an airbag device characterized in that it is positioned and provided in the gas flow path.

In the above structure, the gas purifying agent is
A catalyst for causing or promoting a detoxification reaction of a harmful gas, a filter agent for chemically or physically adsorbing a harmful gas, or the like can be used. In the above structure, an oxidation catalyst can be used as a gas purifying agent for the purpose of purifying harmful gas that is rendered harmless by oxidation. As an oxidation catalyst,
A catalyst composed of activated carbon or a mixture of oxides of manganese, copper, cobalt and silver, a catalyst composed of a mixture of copper oxide and manganese oxide, or a catalyst composed of platinum or palladium alone or a complex can be used.

In the above structure, in order to promote detoxification of harmful gas, it is preferable to have an outside air intake port in the vicinity of the gas cleaning means, and this outside air intake port is also used as a gas discharge port from the airbag. You can also In the above-described configuration having the outside air intake port or the gas discharge port, it is preferable to provide the outside air intake port or the gas discharge port by the gas purifying means. In the configuration in which the gas purifying means is provided so as to cover the gas outlet, the gas purifying means can be provided outside the airbag device.

[0012]

According to the air bag device of the present invention, the harmful gas in the gas generated from the inflator and inflating the air bag when the vehicle collides, for example, is a gas purifying agent of the gas purifying means provided near the inflator. Since the gas that has contributed to the inflation of the airbag is in a clean state before being discharged to the outside of the vehicle compartment, the harmful gas is not released into the vehicle interior because it is rendered harmless by contact with the vehicle. For example, to remove carbon monoxide from the generated gas, carbon monoxide CO
Can be oxidized to carbon dioxide CO _2, and by using an oxidation catalyst therefor as a purifying agent, 2CO +
The reaction of O ₂ → 2CO ₂ is promoted.

A harmful gas such as carbon monoxide that is rendered harmless by oxidation is further promoted by taking in outside air (oxygen) from the outside of the airbag. For this,
It is preferable to form an outside air intake in the vicinity of the gas purifying means. Further, when the outside air inlet is formed near the gas purifying means, the gas in the airbag can be discharged through the outside air inlet. In the configuration in which gas is discharged from the outside air intake, it is not necessary to form an exhaust port in the airbag itself,
Simplifies airbag production.

Further, in the structure in which the container is arranged so as to cover the outside air intake port and the gas is discharged from the outside air intake port, the gas from the inflator comes into contact with the catalyst during the process of filling the airbag, and this gas is discharged. Since the catalyst comes into contact with the catalyst again in the process of being discharged from the airbag, the efficiency of detoxifying harmful gas is extremely improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. First, the overall configuration of the airbag device will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view showing an airbag device 10 for a driver's seat which is a first embodiment of the present invention, and FIG. 2 is a perspective view of an inflator and a gas purifying means. The airbag device 10 includes a housing 11 attached to a steering wheel, an inflator 20 fixed to the housing 11, an airbag 30 fixed to the housing 11 and filled with gas from the inflator 20.
A module cover 40 fixed to the housing 11 and accommodating the airbag 30 in a folded state is configured as a main element, and is arranged at substantially the center of the steering wheel. Further, in addition to the above-described configuration, the airbag device 10 includes a gas purifying unit 50 in which a gas purifying agent 53 is contained in a gas permeable container 54.

At the time of a vehicle collision, the gas generated by the inflator 20 is ejected from the ejection port 21 formed on the peripheral surface of the inflator 20 to fill the airbag 30. This gas inflates the folded airbag 30 to rupture the module cover 40, and causes the airbag 30 to expand into a balloon shape as shown by an imaginary line in FIG. The deployed airbag 30 receives the occupant's head and chest and releases the filled gas from the exhaust port 3
By gradually discharging from 1 to the passenger compartment and contracting,
It reduces the impact on the head and chest of the occupant and prevents secondary collisions, that is, collisions of the occupant with various parts of the passenger compartment.

The flange portion 22 of the inflator 20, the peripheral portion of the mounting opening 32 of the airbag 30, and the bottom plate 51 that constitutes the container 54 of the gas purifying means 50 are fixed to the housing 11 with bolts 12. The peripheral edge of the module cover 40 is attached to the housing 11 with the rivets 13.
Fixed by. A gas generating agent is enclosed inside the inflator 20, and the gas generating agent is ignited and burned based on signals from various sensors that detect a collision of the vehicle, and gas is ejected from the ejection port 21. . Spout 21
Are provided on the side surface of the inflator 20 at predetermined intervals along the circumferential direction, and eject gas radially. As a result, the airbag 30 is uniformly deployed as a whole.

The gas purifying means 50 contains a gas purifying agent 53 in a container 54, and is provided so as to face the ejection port 21 formed around the inflator 20. Container 54
Is formed of a member having air permeability such as a wire mesh or a perforated plate so that the gas from the inflator 20 can easily pass therethrough.
In this embodiment, the container 54 is composed of a wire net 52 and a bottom plate 51 for the convenience of filling and mounting the purifying agent 53. Further, the purifying agent 53 is filled in the container 54 so as to have a pellet shape or a granular shape so as to have air permeability.
As shown in a perspective view of the inflator 20 and the gas purifying means 50 in FIG. 2, the gas purifying means 50 is formed in an annular shape and surrounds the inflator 20 with a predetermined gap. Details of the gas purifying means 50 will be described later.

The airbag 30 is formed in a bag shape as a whole by coating a woven fabric made of synthetic fiber filaments with synthetic rubber and sewing the cut pieces of the obtained base cloth. An exhaust port 31 and a mounting opening 32 are provided in the airbag 30. The mounting opening 32 is for mounting the airbag 30 to the housing 11 fixed to the steering wheel, and the peripheral portion thereof is
It is reinforced by overlapping and sewing the annular reinforcing cloth 33. The airbag 30 is folded so as to wrap the inflator 20 when the device is not in operation, and is covered by the module cover 40.

The module cover 40 is an injection-molded product such as a synthetic resin or a rubber material, and is ruptured from a preset rupture start portion 40a by the inflation pressure of the airbag 30 caused by the gas generated by the inflator 20, and the ruptured portion is ruptured. Therefore, the airbag 30 can be deployed to the passenger side. Inside the module cover 40, the net insert 41 is
As a reinforcing material, it is arranged in the peripheral portion excluding the fracture initiation planned portion 40a. As a result, the module cover 40 is ruptured from the rupture start scheduled portion 40a when the airbag 30 is inflated.

Next, the gas purifying means 50 will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view of the vicinity of the gas purifying means 50. The container 54 is an annular wire mesh 5 having an inverted U-shaped cross section.
2 is fixed on the bottom plate 51 by caulking or welding, and gas can pass through the inside. The container 54 is arranged in the gas flow path near the ejection port 21 of the inflator 20 so as to be a gas passage between the ejection port 21 and the airbag 30, and passes by the purifying agent 53 housed inside. Purifies by converting harmful gas into harmless gas.

The form of the purifying agent 53 is pellet,
A granular material is preferably used, and a pellet-shaped material is used in this embodiment. Correspondingly, the mesh 54 of the mesh which does not escape to the outside of the mesh 52 due to the gas pressure of the purifying agent 53 in pellet form is used for the container 54. By the purifying action of the purifying agent 53, the harmful gas in the gas from the inflator 20 is rendered harmless.

The operation of this embodiment will be described. When the vehicle collides, the inflator 20 ignites the gas generating agent based on signals from various sensors that detect the collision of the vehicle, and radially ejects the gas generated by the combustion of the gas generating agent from each ejection port 21. The ejected gas passes through the container 54 and is filled in the folded airbag 30 to instantly inflate the airbag 30.

At this time, most of the gas ejected from the ejection port 21 and filling the airbag 30 passes through the container 54 containing the purifying agent 53, and the harmful gas contained in the gas becomes the purifying agent 53. Purified by the contact of
The gas that has inflated the airbag 30 is purified gas. Further, even after the generated gas has passed through the cleaning agent 53, as long as the gas is in the airbag 30, the gas contacts the cleaning agent 53 by convection. Can purify gas.

The inflated airbag 30 is expanded to the occupant side to form a balloon shape, and can receive the head and chest of the occupant. Further, when the head and chest of the occupant are received, the gas is exhausted from the exhaust port 31 of the airbag 30 to reduce the impact on the occupant and prevent the secondary collision of the occupant in the passenger compartment. . Here, since the airbag 30 is filled with clean gas, clean gas is discharged from the exhaust port 31 of the airbag 30 into the vehicle interior.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a sectional view showing a main part of an airbag device 60 which is a second embodiment of the present invention. In this second embodiment, the container 54 includes a pair of annular wire nets 52a having different diameters,
52b, a bottom plate 51, and an upper plate 61, and the upper plate 61 includes annular metal nets 52a and 52b.
It is fixed by crimping or welding. A guide plate 62 is fixed to the upper surface of the upper plate 61 by spot welding or the like. The guide plate 62 is used for the inflator 20.
The inflator 2 is extended above the inflator 20 so as to form a substantially closed space between the inflator 2 and the container 54.
It is not fixed to 0. The guide plate 62 rectifies the gas from the ejection port 21 of the inflator 20 to rectify the gas in the catalyst 53.
To guide you to. When the gas is ejected from the ejection port 21 of the inflator 20, the gas does not escape upward in the drawing, and almost all of the gas passes through the purifying agent 53. As a result, the purification efficiency of the gas is increased, the purification performance is improved, and the airbag 30 is filled with extremely clean gas.

Next, another embodiment of the present invention will be described. The following examples are suitable for purification of harmful gases such as carbon monoxide that are rendered harmless by oxidation. As the purifying agent 53 for this purpose, for example, an oxidation catalyst 53 made of copper oxide and manganese oxide in a peroxide state (for example, HOPCALITE (trade name)) can be used. Therefore, in the following description of the embodiments, the purifying agent 53 will be described as the catalyst 53.

First, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a sectional view showing a main part of an airbag device 70 which is a third embodiment of the present invention. In the third embodiment, similarly to the second embodiment, the guide plate 62 is fixed to the upper surface of the container 54, and the tip end portion of the guide plate 62 extends to the vicinity of the inflator 20 and is bent downward.
An opening 71 is provided in the housing 11 near the inflator 20, and the opening 71 is provided.
Together with the opening 72 provided in the flange portion 22 of the inflator 20 constitute an outside air intake 73. The other structure is the same as that of the second embodiment. The outside air intake ports 73 do not need to be formed over the entire periphery of the inflator 20, but are appropriately formed at predetermined intervals. Also,
At the edge of the opening 71 formed in the housing 11 on the inflator 20 side, the gas from the inflator 20 is prevented from flowing to the outside air intake port 73, and the outside air is prevented from flowing toward the inflator 20. , The outside air is a catalyst 5
A guide portion 74 having an inclined surface that guides in the direction of 3 is formed by bending.

The outside air intake 73 functions as an air intake from the passenger compartment, and introduces the air from the passenger compartment into the container 54 together with the gas from the inflator 20. That is, when gas is ejected from the ejection port 21 of the inflator 20, a negative pressure is generated between the ejection port 21 and the container 54 due to the jet flow of the gas, and the negative pressure acts in the direction from the outside air intake 73 to the catalyst 53. The air in the passenger compartment flows inward. The air in the vehicle compartment is introduced into the container 54 together with the gas, and the increase of oxygen activates the catalyst 53 to promote purification. As a result, the gas is purified more efficiently and the gas purification capacity is enhanced. The guide portion 74 formed at the edge of the opening 71 of the housing 11 can be omitted,
Even if the guide portion 74 is omitted, the outside air is taken in, so the purification of the generated gas is promoted.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a sectional view showing a main part of an airbag device 80 which is a fourth embodiment of the present invention. In the fourth embodiment, the bottom plate 86 for fixing the wire mesh 52 is
The inflator 20 is fixed to the upper surface of the flange portion 22 by welding or the like so as to cover the opening 81 provided in the flange portion 22. The bottom plate 86 includes a flange portion 2
An opening 82 is provided at a position corresponding to the second opening 81, and this opening 82 constitutes an outside air intake 83 together with the opening 81 of the flange portion 22. On the bottom plate 86, an auxiliary bottom plate 84 made of a wire mesh is provided so that the catalyst 53 does not leak from the opening 82. In addition, the flange portion 22 of the inflator 20 is located at a position closer to the outer edge than the through hole 81.
At the same time, it is fixed to the housing 11 with bolts 12.

According to this structure, when gas is ejected from the ejection port 21 of the inflator 20 and passes through the inside of the container 54,
A negative pressure is generated in the container 54 due to the jet flow of the gas, and the air in the vehicle compartment flows into the container 54 from the outside air intake port 83 by the action of the negative pressure. The air in the passenger compartment is introduced into the container 54 together with the gas, and oxygen activates the catalyst 53 to accelerate the oxidation. As a result, the gas is oxidized more efficiently and the purification capacity is enhanced.

In the fourth embodiment, the exhaust port 31 of the airbag 30 can be omitted and the outside air intake port 83 can also be used as an exhaust port. With this configuration, the gas from the inflator 20 comes into contact with the catalyst 53 when the air bag 30 is filled, and the air bag 3
The gas inside 0 contacts the catalyst 53 also when it is discharged from the outside air intake port 83. Therefore, the contact time between the gas and the catalyst 53 becomes long, and the oxidation of the gas is promoted. Thus, when the airbag 30 contracts, the gas in the airbag 30 passes through the container 54 again and is promoted to be oxidized by the catalyst 53, and then discharged from the communication port 83 into the passenger compartment. The gas is subjected to the action of the catalyst 53 twice to promote oxidation, and is extremely efficiently oxidized and purified.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a sectional view showing a main part of an airbag device 90 which is a fifth embodiment of the present invention. The fifth embodiment has a bottom plate 86 in addition to the configuration of the fourth embodiment.
And a thin film seal 91 is sandwiched between the flange portions 22 of the inflator 20. In this configuration, the outside air intake port 83 mainly functions as an exhaust port for gas inside the airbag 30.

The thin film seal 91 is waterproof and breaks or melts. For example, the thin film seal 91 is made of a resin sheet material, an aluminum foil, or the like, and is broken or melted when the gas pressure or heat reaches a predetermined value. That is, the thin film seal 91 is
Dust, moisture, etc. are surely prevented from entering the container 54 from the passenger compartment side, and the airbag 30 is activated when the device is operated.
It is possible to reliably prevent the gas from leaking from the communication port 83 into the vehicle interior until the gas expands sufficiently.

In the fifth embodiment, the air bag 30 is not provided with an exhaust port and has an extremely high airtightness, and the thin film seal is caused by the gas pressure and the heat of the gas resulting from the expansion of the air bag 30. 91 breaks or melts. When the thin film seal 91 is broken or melted by a predetermined pressure or heat, the gas inside the airbag 30 inflated and deployed is discharged from the exhaust port (outside air intake) 83. Therefore, the gas from the inflator 20 comes into contact with the catalyst 53 when the airbag 30 is inflated, and also comes into contact with the catalyst 53 when it is discharged from the exhaust port 83 into the passenger compartment, as in the fourth embodiment. The oxidation is promoted by the action of the catalyst 53 twice, and the oxidation / purification is performed extremely efficiently.

In the first to fifth embodiments described above, the gas purifying means 50 is provided inside the airbag 30, and the gas purifying means 50 and the ejection port 21 of the inflator 20 are provided.
Are opposed to each other at a predetermined interval, but instead of such a configuration, the container 54 and the inflator 20 may be provided in close contact with each other so that the gas purifying means 50 covers the ejection port 21 of the inflator 20. . However, in this case, the shape and strength of the container 54 and the purifying agent (catalyst) 53 are appropriately set so that the container 54 and the purifying agent (catalyst) 53 are not damaged by the impact of the ejected gas.

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a sectional view showing a main part of an airbag device 100 according to a sixth embodiment of the present invention. This sixth embodiment is a gas purification means 50 of the fourth embodiment shown in FIG.
Is provided outside the inflator 20. That is, the bottom plate 86 for fixing the wire net 52 is fixed to the lower surface of the flange 22 by welding or the like so as to cover the opening 81 provided in the flange 22 of the inflator 20. The bottom plate 86 is provided with an opening portion 82 at a position corresponding to the opening portion 81 of the flange portion 22, and the opening portion 82 constitutes an exhaust port 93 together with the opening portion 81 of the flange portion 22. .

Also in the sixth embodiment, no exhaust port is formed in the airbag 30, and when the airbag 30 contracts, gas flows into the container 54 through the exhaust port 93 and the catalyst 53 promotes oxidation. After that, it is discharged into the passenger compartment. That is, unlike the case where the gas purifying means 50 is provided inside the airbag 30 as in the fourth embodiment, the gas is catalyzed in this sixth embodiment just before being discharged into the vehicle interior. Only once. However, on the other hand, since the container 54 is always exposed to the air in the vehicle compartment, that is, in the atmosphere in which oxygen exists, the catalyst 53 is activated and a more efficient oxidation promoting action can be expected, which is sufficient. Has gas purification capability. In the sixth embodiment as well, similar to the fifth embodiment, the thin film seal 91 shown in FIG. 7 may be provided between the bottom plate 86 of the container 54 and the flange portion 22 of the inflator 20.

In each of the above-mentioned embodiments, the purifying agent (catalyst) 53 may be housed in the container 54 in a state of being covered with an extremely thin resin film so as to be hermetically sealed. The resin film is selected so that it is melted by the heat of gas. According to this, when the device is not in operation, the purifying agent 53 is not affected by moisture in the air in the vehicle compartment and the stable performance is always maintained. The purifying agent 53 may be sealed by covering the entire container 54 with a resin film. Further, the purifying agent 53 may be in any form as long as it allows gas to pass therethrough, and may be in any manufacturing method. Further, the catalyst in the above embodiment is an example of detoxifying a harmful gas by oxidation, if the other specific gas in the generated gas is detoxified, the catalyst for detoxifying the specific gas is purified. Selected as an agent.

Although each of the above embodiments is an airbag device for the driver's seat, which is arranged substantially in the center of the steering wheel, the configuration of the present invention is the airbag device for the passenger seat provided on the dashboard on the passenger side. Alternatively, the invention is applicable to a rear seat airbag device provided on the back surface of a front seat, and further to an airbag device arranged on a door or a ceiling. In this case, the shape of the inflator is not limited to that shown in the figure, but a gas purifying means in which a gas purifying agent is housed in a gas permeable container is provided so as to face the gas ejection port of each inflator or be close to the gas ejection port. Just do it.

[0041]

As described above, according to the present invention, the gas purifying means containing the gas purifying agent in a form capable of being ventilated in the air-permeable container is provided with the gas of the inflator for generating the gas for inflating the airbag. By arranging in the gas flow path near the ejection port, the gas discharged to the outside when the airbag is contracted due to the operation of the airbag is always in contact with the purifying agent to be purified. Therefore, the gas discharged from the airbag into the vehicle interior is purified and clean, and the atmosphere inside the vehicle interior is not polluted. Further, since the gas purifying means is configured with a simple structure in which the gas purifying agent is housed in the container and provided, the size of the airbag device does not increase.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an airbag device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an inflator and a gas purifying unit of the airbag device of FIG.

3 is a cross-sectional view showing a main part of the airbag device of FIG.

FIG. 4 is a sectional view showing a main part of an airbag device according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a main part of an airbag device according to a third embodiment of the present invention.

FIG. 6 is a sectional view showing a main part of an airbag device according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view showing a main part of an airbag device according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view showing a main part of an airbag device according to a sixth embodiment of the present invention.

[Explanation of symbols]

 10 Airbag Device 11 Housing 20 Inflator 22 Inflator Flange 30 Airbag 31 Exhaust Port 40 Module Cover 50 Gas Purifying Means 52 Wire Mesh 53 Gas Purifying Agent (Catalyst) 54 Container 62 Guide Plate 71, 72, 81, 82 Opening 73, 83 Outside air intake 91 Thin film seal 93 Exhaust port

Claims (1)

[Claims] 1. An inflator which is mounted on a vehicle and generates gas in an emergency, and an airbag which is filled with gas generated from the inflator to expand and deploy from a folded state and discharges gas to the outside after expansion and contracts. An air bag device having: a gas purifying means for accommodating a gas purifying agent in a form capable of being ventilated in a gas permeable container, the gas purifying means being provided in a gas flow path near the gas ejection port of the inflator. Air bag device.