JP3102238B2 - Airbag device for passenger seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device for a passenger seat which inflates a bag for an occupant sitting in a passenger seat when the vehicle suddenly decelerates.

[0002]

2. Description of the Related Art An airbag device for a passenger's seat is roughly classified into two types: an airbag device installed above a glove box in an instrument panel, and an airbag device installed at the top of an instrument panel. There is a type to be done. In either case, the airbag door is deployed at the time of rapid deceleration of the vehicle, and the bag is inflated toward the occupant sitting on the passenger seat.

[0003] There are various types of hinge structures which are the center of deployment of the airbag door. One example of the former type hinge structure is disclosed in JP-A-3-86653. Hereinafter, the structure disclosed in this publication will be briefly described.

As shown in FIG. 9, a passenger airbag device 100 includes an airbag case 102 having a hollow interior, in which a cylindrical inflator 104 and a folded bag body are provided. 106 are accommodated. In addition, the opening 108 of the airbag case 102 is provided with the airbag door 1 that is continuously arranged vertically.
It is closed by 10, 112.

The upper end of the upper airbag door 110 and the lower end of the lower airbag door 112 are respectively in contact with the end of the instrument panel 114. As shown in FIG. 10, receiving members 120 having a pair of locking holes 116 and 118 are fixed to both sides of the airbag case 102 on both sides of the opening 108. ing. Correspondingly, clips 122 and 124 made of resin are attached to the back surface corner of the upper airbag door 110 and the back surface corner of the lower airbag door 112, respectively. Therefore, in the normal state, each of the clips 122, 124
Are locked in the locking holes 116, 118 of the receiving member 120, so that both the airbag doors 110, 112 maintain the closed state. However, when the vehicle suddenly decelerates, the clips 122 and 124 break at an intermediate portion thereof, so that the airbag doors 110 and 112 are deployed in directions away from each other.

As shown in FIG. 9, both sides of the upper end of the airbag door 110 on the upper side and both sides of the top wall of the airbag case 102 are straps 126.
(Also shown in FIG. 10). Similarly, both sides of the lower end of the lower airbag door 112 and both sides of the bottom wall of the airbag case 102 are connected by straps 128. Therefore, when the vehicle suddenly decelerates, the airbag doors 110 and 112 are deployed by the straps 126 and 128 as shown by a two-dot chain line in FIG.

The reason why the hinge structure using the straps 126 and 128 is employed is as follows.
That is, in recent vehicles, the instrument panel 114 that is curved in a plan view may be used in order to improve the appearance of the instrument panel 114. In this case, since the hinge axes of the airbag doors 110 and 112 are curved, it is difficult to appropriately deploy the airbag doors 110 and 112 with a normal hinge structure. Therefore, a hinge structure using the straps 126 and 128 is adopted in order to solve such a problem.

However, the hinge structure disclosed in the above publication is preferable for the former type (the type in which the airbag door is disposed above the glove box of the instrument panel), but the latter type is preferred. (The type in which the airbag door is disposed on the top of the instrument panel) is not preferable.

That is, in the former type, the airbag doors 110 and 112 are provided above the glove box, and the degree of curvature of this portion is substantially the same for both the left and right sides. Therefore, there is no particular problem when the hinge structure disclosed in the above publication is applied. However, as can be seen from the diagram schematically shown in FIG. 11, in the latter type, the top 130A of the instrument panel 130
The airbag door 132 is disposed at the left side, and this portion is curved along the windshield glass. Therefore, the airbag door 132
When the airbag door 13 is unfolded, the airbag door 13 from the instrument panel 130 is moved between the line A and line B sections.
The distance to 2 is different. Therefore, the length of the right strap 134 and the length of the left strap 136 are changed.
If the length of the airbag door 132 is changed, the load applied when the airbag door 132 is deployed becomes uneven between the left and right straps 134 and 136. Therefore, the strap 13 serving as a hinge
4, 136 itself strength or in addition to strap 1
It is difficult to select the support strength of the mounting portions 34 and 136.

[0010] In view of the above facts, in the type in which the airbag door is disposed on the top of the instrument panel, the present invention prevents the load acting on the hinge portion from becoming uneven, and maintains a stable posture. It is an object of the present invention to provide a passenger airbag device capable of deploying an airbag door.

[0011]

According to a first aspect of the present invention, there is provided a bag body which is disposed on a top passenger side of an instrument panel of a vehicle and is accommodated in a folded state in an airbag case during rapid deceleration of the vehicle. An airbag device for a passenger seat including an airbag door that expands toward the windshield glass by an inflation pressure when the airbag is inflated, wherein a front end of the airbag door and a front end of the airbag case are locally localized. Airbag that connects and deploys a hinge portion that is connected at a location and a position where the distance between both front ends is substantially the shortest, and that connects both sides of the airbag door and both sides of the airbag case. A pair of deployment angle regulating means for regulating the deployment angle of the door to a predetermined angle, further comprising:
It consists of a single real strap
Wraps are provided on both sides of the back of the airbag door
The guide is inserted so as to be relatively movable .

According to a second aspect of the present invention, there is provided an airbag device for a passenger seat according to the first aspect, wherein the substantially shortest position is a front-rear direction passing through a widthwise intermediate portion of the airbag door. It is characterized by being present on the vehicle body center side from the center line.

According to a third aspect of the present invention, the instrument panel is disposed on the top passenger side of the instrument panel of the vehicle , and is accommodated in a folded state in the airbag case when the vehicle is rapidly decelerated .
An airbag device for a passenger seat having an airbag door that is pressed by an inflation pressure when the bag body is inflated and deploys to a windshield glass side, wherein a deployment center side end of the airbag door and an airbag case are provided. Front end or instrument
Hinge panel that connects the instrument panel to the local area at one location, and both sides of the airbag door and both sides of the airbag case
Parts or instrument panels , respectively, and a pair of deployment angle regulating means for regulating the deployment angle of the deployed airbag door to a predetermined angle, and the pair of deployment angle regulating means to both sides of the airbag door. And a connecting portion for connecting the connecting portion and the hinge portion within the plane of the airbag door. An airbag device for a passenger seat according to the present invention according to claim 4 is the present invention according to claim 3,
When viewed from a direction perpendicular to the plane of the airbag door, the shape of the connecting portion is substantially Y-shaped.

[0014]

According to the first aspect of the present invention, when the vehicle suddenly decelerates, the bag housed in the airbag case in a folded state expands. For this reason, the inflation pressure of the bag acts on the airbag door, and the airbag door expands toward the windshield glass with the hinge as a center. At this time, the deployment angle of the airbag door is regulated to a predetermined angle by a pair of deployment angle regulating means connecting the both sides of the airbag door to both sides of the airbag case.

According to the present invention, since the hinge portion for connecting the front end portion of the airbag door and the front end portion of the airbag case at one local portion is provided, the hinge portion when the airbag door is deployed is provided. The load can be concentrated on this hinge portion (one location). For this reason, when employing hinge portions that are connected at a plurality of local portions, the load applied to each hinge portion is likely to be uneven, but in the case of the present invention, such a problem does not occur.

However, when the hinge portion is provided only at one local portion, the posture of the deployed airbag door may be unstable. Therefore, in the present invention, in order to solve this problem, both sides of the airbag door and both sides of the airbag case are connected by a pair of deployment angle regulating means. This allows the airbag door to be deployed in a stable posture. Furthermore, in the present invention, the hinge portion is set at a position where the distance between the front end of the airbag door and the front end of the airbag case is substantially the shortest. Can be.

According to the third aspect of the present invention, there is provided a connecting portion for connecting the hinge portion and the connecting portion of the pair of deployment angle restricting means to both sides of the airbag door in the plane of the airbag door. Therefore, the load at the time of deployment of the airbag door is supported by the hinge portion and the pair of deployment angle regulating means via the connecting portion. That is, the load at the time of deployment of the airbag door is dispersed and supported at these three locations via the connecting portion. This eliminates the need for the airbag door itself to support the load during deployment. Therefore, the strength of the airbag door can be reduced.

According to the present invention described in claim 4, according to claim 3,
In the present invention described, since the shape of the connecting portion is substantially Y-shaped when viewed from the direction perpendicular to the plane of the airbag door, the load at the time of deployment of the airbag door is evenly distributed to each portion of the connecting portion,
As a result, the load is evenly distributed to the hinge portion and the three deployment / restriction means. Therefore, the strength of the connecting portion can be reduced, and the strength of the hinge portion and each of the development angle restricting means can be reduced.

[0019]

Embodiment 1 First Embodiment Hereinafter, a first embodiment will be described with reference to FIGS. The first embodiment is a disclosure example . In these drawings, an arrow FR appropriately shown indicates a front side of the vehicle, an arrow UP indicates an upper side of the vehicle, and an arrow IN indicates an interior side of the vehicle.

FIG. 3 shows an airbag device 10 for a passenger seat.
Are shown in the activated state. As shown in this figure, a predetermined opening 14 is formed in the instrument panel 12 of the vehicle on the passenger seat side of the top portion 12A, and the airbag device 10 is disposed inside the opening 14. ing. Note that this instrument panel 1
2 is curved along the windshield glass 28, so that the front edge of the opening 14 is also curved.
(See FIGS. 1 and 2).

The airbag device 10 is provided with a substantially box-shaped airbag case 16 in which the top 12A of the instrument panel 12 is open. A cylindrical inflator 18 is provided inside the airbag case 16. Further, around the inflator 18, the bag body 20 is disposed in a folded state (a state shown by a dashed line in FIG. 3).

The inflator 18 generates a large amount of gas when a mechanical ignition type or electric ignition type sensor (not shown) detects a sudden deceleration state of the vehicle. An example of the internal structure of the inflator 18 will be briefly described as follows. A primer (in the case of a mechanical ignition type) or an ignition device (in the case of an electric ignition type) is disposed at one end of the inflator 18 in the axial direction. When the sensor operates, the primer is first ignited or ignited. The device operates. In addition, a transfer agent is provided on the shaft core of the inflator 18, and a gas generating agent is sealed around the transfer agent. Therefore, when the primer is ignited or the ignition device is activated, the gas generating agent burns through the transfer agent to generate a large amount of gas. The generated gas is supplied to the inflator 18.
Through a plurality of gas holes formed in the peripheral surface of the bag body 20 into the folded bag body 20.

The open end of the airbag case 16 that houses the inflator 18 and the bag body 20 is bent in a direction away from each other (hereinafter, this portion is referred to as a "flange portion 16A"). This airbag case 16
Is closed by an airbag door 22 formed of a resin such as urethane. In addition, since the airbag door 22 also closes the opening 14 described above, its front end 22
A is curved in a plan view similarly to the opening 14.

As shown in FIGS. 1 and 2, the front end 22A of the above-described airbag door 22 has a relatively narrow hinge portion (also referred to as a short strap) 24 made of cloth at a substantially central portion thereof. The airbag case 16 is connected to the front end of the flange portion 16A. The hinge 24 is provided at the front end 22A of the airbag door 22 and the flange 16A of the airbag case 16.
It is preferable to select a portion where the distance to the front end portion is the shortest and a straight portion that is not curved in a plan view or a portion that curves gently. As a result, the front end 22A of the airbag door 22 and the front end of the flange 16A of the airbag case 16 are connected only at one local portion.

The front end 22A of the airbag door 22
As a method of connecting the substantially central portion of the airbag and one end of the hinge portion 24, a mesh material (reinforcing net-like member) embedded in the airbag door 22 is formed so that a part thereof projects. When this is inserted into the airbag door 22, only a part thereof may be protruded from the airbag door 22 and used as the hinge part 24, or one end of the hinge part 24 may be attached to the airbag door 22. 22 may be connected by rivets or the like.

In this embodiment, the airbag case 1
The front end of the flange 16A and the other end of the hinge 24 are connected by rivets 26 as shown in FIG. 3, but the other end of the hinge 24 is not necessarily connected to the airbag case 16. Instead, the other end of the hinge portion 24 may be connected to a base material (not shown) located at the front end side peripheral portion of the opening 14 of the instrument panel 12 by a rivet or the like.

Further, a rear end portion 22B of the airbag door 22 is provided.
Of both sides and flange 16A of airbag case 16
Are connected to each other by straps 30 and 32 made of cloth, respectively. The length of each strap 30, 32 is set to a predetermined length, and the airbag door 22 can be deployed to the state shown in FIG. That is,
The straps 30 and 32 prevent the rear end portion 22B of the airbag door 22 from contacting the windshield glass 28 by regulating the deployment angle of the airbag door 22 to a predetermined angle. The method of connecting the straps 30 and 32 is the same as the method of connecting the airbag door 22 and the airbag case 16 or the instrument panel 12 by the hinge 24 described above.

Thus, the air bag door 22 at the time of deployment is
Are connected to the airbag case 16 at three positions (the hinge portion 2).
4 and a pair of straps 30, 32).

The operation of this embodiment will be described below. When the vehicle suddenly decelerates, this vehicle sudden deceleration state is sensed by a sensor (not shown). Thereby, the inflator 1
Since the primer in 8 is ignited or the ignition device is activated, the gas generating agent burns via the transfer agent. For this reason, a large amount of gas is generated and flows into the folded bag body 20 (the state shown by the dashed line in FIG. 3). Therefore, the bag body 20 expands and presses the airbag door 22 from the inside. Thus, the airbag door 22 is deployed toward the windshield glass 28 around the hinge 24. At this time, both sides of the rear end portion 22B of the airbag door 22 and both side portions of the flange portion 16A of the airbag case 16 are connected by the straps 30 and 32. , 32 are extended by a predetermined tension. Accordingly, the airbag door 22 is deployed to the deployment angle shown in FIGS. 1 and 3, and in this state, the bag body 20 is inflated toward the occupant seated on the passenger seat (shown by a two-dot chain line in FIG. 3). Status).

Here, in this embodiment, the airbag door 2
Since the front end 22A of the airbag door 2 and the flange 16A of the airbag case 16 are connected by the hinge 24 provided at one local portion, the load when the airbag door 22 is deployed is concentrated on the hinge 24.

However, when the airbag door 22 and the airbag case 16 are connected only by the hinge portion 24, the deployment posture of the airbag door 22 becomes unstable. 32, both sides of the rear end portion 22B of the airbag door 22 and the airbag case 16 (or the instrument panel 1).
2), the deployment posture of the airbag door 22 is also stabilized.

As described above, in this embodiment, the instrument panel 12 has the windshield glass 28 in plan view.
In the structure in which the airbag door 22 having the front end portion 22A which is similarly curved is formed so as to be deployable, the front end portion 22A of the airbag door 22 and the airbag case 16 Since the front end portion (or instrument panel 12) of the flange portion 16A is connected only at one local portion using the hinge portion 24,
The load when the airbag door 22 is deployed is transferred to the hinge portion 24.
You can concentrate on For this reason, when a structure in which both are hinged at a plurality of local portions is employed, the load applied to each hinge is likely to be uneven, but in the case of the present embodiment, such a problem occurs. Absent. Therefore,
Airbag case 1 to which the other end of hinge 24 is connected
6 (or the base material located on the peripheral edge of the front end side of the opening 14 of the instrument panel 12) can be easily set in strength.

Further, the connecting portion by the hinge portion 24 is not only one local portion, but also a pair of straps 30,
32, both sides of the rear end portion 22B of the airbag door 22 and both side portions of the flange portion 16A of the airbag case 16 (or the base material located on both side peripheral edges of the opening 14 of the instrument panel 12). Because of the connection, the airbag door 22 can be deployed in a stable posture.

Further, in this embodiment, since the connection portion by the hinge portion 24 is a local portion, an excessive external force is applied to the peripheral edge on the front end side of the opening 14 of the instrument panel 12 when the airbag door 22 is deployed. It can be prevented from acting. That is, as shown in FIG. 11, in the case of a structure in which the two parts are hinge-joined at a plurality of local portions (an arrow A and an arrow B) as shown in FIG.
An extension of the hinge axis P of the part viewed from the arrow B line is the virtual hinge axis of the part viewed from the arrow A line. Therefore, in this case, when the airbag door 132 is deployed as shown in FIG. 11, the portion viewed from the arrow A line is deployed around the virtual hinge axis P. For this reason, an excessive external force acts on the peripheral edge on the front end side of the opening of the instrument panel 130 by the strap 134. However, according to the present embodiment, such a problem does not occur because the connection portion by the hinge portion 24 is a local portion. Second Embodiment Hereinafter, a second embodiment will be described with reference to FIGS. Note that the second embodiment corresponds to an embodiment of the present invention described in claims 1 to 3 . The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in these figures, this embodiment is characterized in that the airbag door 22 and the airbag case 16 (or the instrument panel 12) are connected using one strap 40. There is. That is, a substantially T-shaped connecting portion 40A is disposed on the back surface of the airbag door 22, and one end of the connecting portion 40A is extended to the front side of the airbag door 22 in plan view and used as a hinge portion 40B, and the remaining end portion is provided. Are respectively extended in the width direction of the airbag door 22 in a plan view to form a pair of straps 40C and 40D. The connecting portion between the connecting portion 40A, the hinge portion 40B, and the straps 40C, 40D passes through a guide 42 having a U-shaped cross section disposed on the back surface of the airbag door 22. Therefore, these connection portions are relatively movable in the guide 42.

According to the above configuration, in addition to the effects of the first embodiment, the load at the time of deployment of the airbag door 22 does not directly act on the airbag door 22, and the connecting portion 40A and the hinge portion 40B, the strap 40C, 40D can support the load at this time. Therefore, there is an advantage that the strength of the airbag door 22 can be reduced.

In this embodiment, the connecting part 40A, the hinge part 40B, the straps 40C,
Although the connecting portion with 0D is configured to be relatively movable, the present invention is not limited to this. As in the first embodiment, the connecting portion 40A is embedded in the airbag door 22 by insert molding, and the hinge portion 40B and the strap 40C are formed. , 40D may protrude out of the airbag door 22.

In this embodiment, one strap 40 is used. However, the present invention is not limited to this. The connecting portion 40A is a separate strap, and the connecting portion 40A is connected to the hinge portion 40B and the straps 40C and 40D. It may be configured. Third Embodiment Hereinafter, a third embodiment will be described with reference to FIGS. Note that the third embodiment corresponds to an embodiment of the present invention described in claims 1 to 4 . The same components as those of the second embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in these figures, in this embodiment, the hinge portion 44B and the pair of straps 44C, 44D are extended by extending the respective portions of the connecting portion 44A.
This is characterized in that not only the single strap 44 forming is used but also the connecting portion 44A is substantially Y-shaped. Thereby, each part of the connection part 44A is arranged at equal intervals.

According to the above configuration, in addition to the effects of the second embodiment, the load when the airbag door 22 is deployed is reduced by the connecting portion 44A and the hinge portion 44B, and the straps 44C and 44D.
However, at this time, since the respective portions of the connecting portion 44A are arranged at equal intervals, a load is uniformly applied to the respective portions of the connecting portion 44A. Therefore, the strength of the connecting portion 44A and thus the strap 44 can be reduced.

In the embodiment described above, the hinge portion 24
(A second embodiment and a third embodiment)
In the embodiment, a part of the cloth straps 40 and 44 are used as the hinge portions 40B and 44B), but the present invention is not limited to this, and any configuration that can be hinged can be applied.

As shown in FIG. 8, guides 42 are provided at three places on the back of the airbag door 22, and the guides 42 are provided on the back of the front end 22A of the airbag door 22.
The airbag case 16 is bolted to the airbag case 16 to form a hinge portion 50, and the strap 52 is inserted through guides 42 provided on both sides on the rear surface of the rear end portion 22 </ b> B of the airbag door 22. Alternatively, both ends may be bolted to the airbag case 16. The configuration shown in FIG.
It corresponds to an embodiment of the present invention described in claims 1 to 3.
You.

[0043]

As described above, the front airbag device according to the first aspect of the present invention connects the front end of the airbag door and the front end of the airbag case at one local portion. A hinge portion, and a pair of deployment angle restricting means for connecting the both sides of the airbag door and both sides of the airbag case to each other and regulating the deployment angle of the deployed airbag door to a predetermined angle; In the type in which the bag door is arranged on the top of the instrument panel, an excellent effect that the airbag door can be deployed in a stable posture while preventing uneven application of the load applied to the hinge portion. Having. In addition, in the airbag device for a passenger seat according to the first aspect of the present invention, the hinge portion is set at a position where the distance between the front end of the airbag door and the front end of the airbag case is substantially shortest. As a result, the airbag door can be expanded significantly during sudden deceleration of the vehicle,
As a result, there is an excellent effect that the swelling resistance received from the airbag door by the bag body swelling toward the occupant can be reduced.

Further, in the airbag device for a passenger seat according to the present invention, the connecting portions of the pair of deployment angle regulating means to both sides of the airbag door and the hinge portion are formed in the plane of the airbag door. Claim 1 is provided with a connecting portion for connecting at
Not only the same effects as the present invention described can be obtained, but also an excellent effect that the strength of the airbag door can be reduced.

Further, the airbag device for a passenger seat according to the present invention described in claim 4 is the same as that of claim 3,
When viewed from the direction perpendicular to the plane of the airbag door, the shape of the connecting portion is substantially Y-shaped, so that in addition to the effect of the present invention as described in claim 3, the strength of the connecting portion can be reduced, and the hinge portion can be further reduced. This has an excellent effect that the strength of each deployment angle restricting means can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connection structure between an airbag door and an instrument panel side in a passenger airbag device according to a first embodiment.

FIG. 2 is a schematic plan view showing the airbag door of FIG. 1 in a non-deployed state.

FIG. 3 is a longitudinal sectional view showing the airbag device shown in FIG. 1 in a deployed state.

FIG. 4 is a perspective view corresponding to FIG. 1 according to a second embodiment.

FIG. 5 is a schematic plan view corresponding to FIG. 2 and showing the structure shown in FIG. 4;

FIG. 6 is a perspective view corresponding to FIG. 4 according to a third embodiment.

FIG. 7 is a schematic plan view corresponding to FIG. 5 showing the structure shown in FIG. 6;

FIG. 8 is a perspective view of an airbag door as viewed from the back side according to a modification.

FIG. 9 is a longitudinal sectional view showing a conventional passenger airbag device.

FIG. 10 is a perspective view of the passenger airbag device shown in FIG. 9;

FIG. 11 is a perspective view corresponding to FIG. 1 for explaining a problem that occurs when the connection structure of the airbag door shown in FIG. 9 is applied as the type of the embodiment.

FIG. 12 is an explanatory diagram corresponding to FIG. 1 for explaining one effect of the present embodiment in comparison with the related art.

[Explanation of symbols]

 Reference Signs List 10 airbag device 12 instrument panel 12A top 20 bag 22 airbag door 22A front end (development center side end) 24 hinge part 28 windshield glass 30 strap (deployment angle restricting means) 32 strap (deployment angle restricting means) 40A connecting part 40B hinge part 40C strap (development angle restricting means) 40D strap (development angle restricting means) 44A connecting part 44B hinge part 44C strap (development angle restricting means) 44D strap (development angle restricting means) 50 hinge part 52 strap (Deployment angle regulating means)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 21/16-21/32

Claims (4)

(57) [Claims] 1. A windshield glass side which is disposed on the top passenger seat side of an instrument panel of a vehicle and is inflated when a bag stored in a folded state in an airbag case during rapid deceleration of the vehicle is inflated. An airbag device for a passenger seat having an airbag door that deploys, wherein a front end of an airbag door and a front end of an airbag case are locally localized at a single location, and a distance between both front ends is substantially shortest.
And a hinge portion connecting at position comprising, connected respectively with both sides of both side portions and the airbag case of the air bag door, and a pair of deployment angle regulating means for regulating a predetermined angle deployment angle of the air bag door to deploy , And the pair of deployment angle restricting means is a single strap.
And the strap is
Compatible with the guides provided on both sides of the back of the bag door
An airbag device for a passenger seat , which is inserted so as to be movable with respect to a passenger seat. 2. The front passenger seat according to claim 1, wherein the substantially shortest position is located on the vehicle body center side with respect to a front-rear center line passing through a widthwise intermediate portion of the airbag door. Airbag device. 3. An airbag case which is disposed on the top passenger seat side of an instrument panel of a vehicle and which is used when the vehicle is suddenly decelerated.
Inflation when the bag housed in the folded state inflates
What is claimed is: 1. An airbag device for a passenger seat comprising an airbag door which is pressed by pressure and deploys to a windshield glass side, wherein an airbag door deployment center end and an airbag case are provided.
A hinge for connecting the front end or the instrument panel at one local location; and both sides of the airbag door and both sides of the airbag case.
Are connected to the instrument panel , respectively, and a pair of deployment angle regulating means for regulating the deployment angle of the deployed airbag door to a predetermined angle; and And a connecting part for connecting the connecting part and the hinge part in the plane of the airbag door. 4. The airbag device for a passenger seat according to claim 3, wherein the shape of the connecting portion is substantially Y-shaped when viewed from a direction perpendicular to the plane of the airbag door.