JP2003146169A - Airbag door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an airbag door capable of lowering the degree of injury and securing a function of airbag to protect an occupant. SOLUTION: At a movable panel 27 of an insert member 25, a cover piece 30 capable of covering at least an end collar part 17 of a door panel 15A which opens to the occupant seat side is provided. By covering the end collar part 17 facing the occupant seat side of the door panel 15A opened by actuation of an airbag device 20 with the cover piece 30, direct collision of a body part P of the occupant to the end collar part 17 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag door, and more specifically, to a back surface of a movable panel of an insert member which is integrally formed with a base material of an interior member of a vehicle and has appropriate flexibility. The present invention relates to an airbag door that is fixed and that breaks a planned tear line provided on the base material when the airbag device is activated, and separates from the base material to open integrally with the movable panel.

[0002]

2. Description of the Related Art In recent years, most passenger vehicles are equipped with a driver airbag device and a passenger airbag device as standard equipment in order to protect an occupant from an impact such as a collision accident. The airbag device for the driver's seat occupant is generally mounted on the horn pad portion in the center of the steering wheel, and the airbag device for the passenger seat occupant is mounted in front of the passenger compartment of the vehicle as shown in FIG. 10, for example. It is installed in a state of being stored inside an instrument panel 10 as a vehicle interior member. Therefore, the airbag device 20 is attached to the panel base material 11 of the instrument panel 10.
An airbag door 15 that opens to the occupant compartment side when the pressing force of the airbag that expands when the airbag device 20 is actuated is provided at a portion corresponding to. Note that FIG.
In the following, a double-opening type airbag door 15 including two door panels 15A and 15B is illustrated.

The air bag door 15 is integrally formed at a required position of the panel base material 11 which is aligned with the air bag device 20, and the main surface of the air bag door 15 always constitutes a design surface as a part of the base material 11. (It is called "invisible type"). Such an airbag door 15 is formed by a planned cleavage line 16 extending along the outer edge line of the door 15 on the back surface of the panel base material 11.
When the pressing force of the airbag 21 is applied to the back surface, the planned cleavage line 16 is broken, so that separation and opening from the panel base material 11 are allowed (FIG. 1).
1).

Here, the panel base material 11 is, for example, PP.
Although it is made of a relatively hard synthetic resin material such as (polypropylene) or ASG and has an appropriate rigidity, it may be damaged by the impact when a strong pressing force of the airbag 21 is applied especially at low temperature. is there. Therefore, the panel substrate 1
The insert member 25 formed separately from 1 is connected to and supported by the airbag device 20, and the airbag door 15
By fixing it to the back surface of the airbag, measures are taken to prevent damage and scattering of the airbag door 15 and its surrounding parts. The insert member 25 is, for example, T
Correspondingly to a cylindrical fixing bracket 26 formed of PO (olefin-based thermoplastic elastomer) or the like and locked and held by the airbag device 20, and the back surface of each door panel 15A, 15B of the airbag door 15. It is a synthetic resin molded member integrally formed with a fixed movable panel 27 (27A, 27B), has appropriate flexibility, and is less likely to be damaged even when the pressing force of the airbag 21 is received. .

[0005]

By the way, in the airbag door 15 constructed as described above, the insert member 25 is attached and fixed to each of the door panels 15A and 15B, so that the door panel 1 due to the pressing force of the airbag 21 is attached.
Damage to 5A and 15B is preferably prevented. However, as shown in FIG. 11, in the double-opened airbag door 15 including the two door panels 15A and 15B, as the airbag device 20 is actuated, a pressing force of the airbag 21 is applied to the front glass side. The door panel 15B on the left side in the drawing, which is located on the left side in the drawing, is located on the side of the passenger seat on the right side in the drawing, even if the door panel 15B on the left side in the drawing is opened and displaced toward the side opposite to the passenger seat side.
A will be displaced toward the occupant seat side and will stop in a posture in which the occupant seat side is oriented. Moreover, since the movable panel 27A of the insert member 25 and the door panel 15A have substantially the same shape and size, the open side edge portion 17 of the hard door panel 15A is in an exposed state in which the passenger seat side is oriented. Will stop at.

Therefore, if the occupant is thrown forward due to the reaction when the vehicle collides after the airbag 21 is inflated and deployed, the body part of the occupant (for example, the head (face) or the upper half of the body).
(Chest, etc.) Edge portion 1 of the door panel 15A having a hard P
There is a possibility that it will directly collide with 7, and there is a danger that it will trigger the occurrence of a secondary disaster. In particular, since the end edge portion 17 is an end surface formed by instantaneously rupturing the planned tear line 16 due to the pressing force of the airbag 21, a burr or a pointed portion may be formed. If the occupant directly collides with the edge portion 17, the degree of injury may be increased.

On the other hand, when the airbag 21 which expands and deploys toward the passenger seat at the same time as the opening of the airbag door 15 directly contacts the edge portion 17 of the door panel 15A (15B), it is formed on the edge portion 17. It is also conceivable that the burrs or pointed parts may be caught and may be torn or develop poorly. In such a case, it is feared that the occupant protection function included in the airbag 21 may be hindered.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed in order to preferably solve the above-mentioned problems, and a cover piece is provided on a movable panel of an insert member fixed to the back side of an airbag door,
Provided is an airbag door capable of reducing the degree of injury caused by a secondary disaster and ensuring an occupant protection function of an airbag by covering the edge portion of the opening airbag door with the cover piece. The purpose is to

[0009]

In order to solve the above problems and achieve the intended purpose, the present invention is an insert which is integrally formed with a base material of a vehicle interior member and has appropriate flexibility. An airbag door in which a movable panel of the member is fixed to the back surface, and a planned cleavage line provided on the base material is broken when the airbag device is operated, so that the movable panel is separated from the base material and opened integrally with the movable panel. In the movable panel of the insert member, a cover piece capable of covering at least an edge portion of the airbag door opened to the passenger seat side is provided, and the passenger seat of the airbag door opened by the operation of the airbag device. By covering the edge portion facing the side with the cover piece, the body part of the occupant can be prevented from directly colliding with the edge portion.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an air bag door according to the present invention will be described below with reference to the preferred embodiments with reference to the accompanying drawings. In each embodiment described later, FIG.
The description will be made based on the double-opening type airbag door 15 provided on the instrument panel 10 as the vehicle interior member shown in FIG. Therefore, the same members and parts as those already mentioned in the section of the prior art described with reference to FIGS. 10 and 11 are designated by the same reference numerals.

[0011]

[First Embodiment] FIG. 1 is a sectional view of an essential part of an instrument panel 10 in which an airbag door according to a first embodiment of the present invention is provided on a panel base material 11. The instrument panel 10 shown in the drawing is composed of a synthetic resin panel base material 11 formed of polypropylene (PP) or the like into a required shape, and a skin material 12 attached to the outer surface of the panel base material 11.
It is a layer type.

The airbag door 15 provided on the panel base material 11 of the instrument panel 10 has a central tear line 16a and an outer edge tear line on the back surface of the panel base member 11 at a position corresponding to the airbag device 20. 16b
By extending the "day" shaped cleavage line 16 consisting of
The base material 11 is formed integrally with the panel base material 11 and is always formed.
It is composed of two door panels 15A and 15B which constitute a part of the above. And each door panel 15A, 15B
Are separated from the panel base material 11 by breaking the outer edge planned cleavage line 16b, and are separated from each other by breaking the central planned cleavage line 16a. Here, the planned cleavage line 16
Is a groove formed in the back surface of the panel base material 11 along the outer edge line of the door panel 15A, 15B, and is broken by making the wall thickness thinner than the general parts of the door panel 15A, 15B and the panel base material 11. It is easy to set.

The insert member 25 fixed to the back surface of the airbag door 15 includes two door panels 15A, 1.
5B is an integrally molded member made of synthetic resin (TPO or the like) that is formed to correspond to the double-opening type airbag door 15 and has a planned outer edge tear line 16 of the planned tear line 16.
It is composed of a rectangular frame-shaped fixed bracket 26 aligned with b, and movable panels 27 (27A, 27B) formed opposite to each other inside the opening of the fixed bracket 26.
The movable panels 27A and 27B have hinges 2
8 is connected to the fixed bracket 26 in a bendable manner, and the slits 29 are formed along the respective boundary lines.
Are separated from each other by. Note that the insert member 25
Since it is formed of TPO (olefin-based thermoplastic elastomer) as described above, it has appropriate flexibility and is easily deformed, and it is not damaged even when subjected to the pressing force of the airbag 21. It's getting harder.

As shown in FIG. 2, such an insert member 25 is used for each door panel 15 of the airbag door 15.
The movable panels 27A and 27B are provided on the back surfaces of A and 15B, respectively.
Is tightly fixed, and the fixing bracket 26 is locked and held by the case body of the airbag device 20 (FIG. 3). Here, the movable panels 27A and 27B are welded and fixed to the back surfaces of the door panels 15A and 15B based on, for example, a vibration welding method.

In the air bag door 15 of the first embodiment, the movable panel 27A of the insert member 25 is used.
Further, there is provided a cover piece 30 capable of covering at least the edge 17 on the open side of the airbag door 15 (door panel 15A) which is open to the passenger seat side. That is, in the insert member 25, as shown in FIG. 1, the slit 29 is not set at a position corresponding to the central tear line 16a, but is required toward the door panel 15B on the left side of the drawing which opens to the windshield side. By setting the position offset by the amount S, the size of the movable panel 27A corresponding to the door panel 15A on the right side in the drawing that is opened to the passenger seat side is set large. Therefore, the cover piece 3 is a portion where the edge of the movable panel 27A on the right side in the drawing extends slightly out of the edge 17 of the door panel 15A.
It is 0.

In the thus constructed air bag door 15 of the first embodiment, the air bag device 20 is actuated and the pressing force of the air bag 21 is applied, and the planned tear line 16 is generated.
Both of the door panels 15A and 15B are opened by rupturing the outer edge planned cleavage line 16b and the central planned cleavage line 16a. At this time, in the door panel 15A on the right side in the drawing which is open to the passenger seat side, as shown in FIG. 3, the cover piece 30 extending to the end of the movable panel 27A is attached to the door panel 15A.
It is in a state in which it extends from the end edge portion 17 of A facing the passenger seat side to the passenger seat side. Here, the door panel 15A and the movable panel 27A receive the pressing force of the airbag 21 and instantly open and stop, and, as described above, the insert member 25 is formed of flexible TPO. As illustrated in the circle of FIG. 3, the insert member 2
The cover piece 30 forming a part of 5 is bent toward the end edge portion 17 of the door panel 15A by the inertial force acting at the time of opening and stopping.

Therefore, for example, when the occupant is thrown forward due to the reaction when the vehicle collides, the body part of the occupant (head
The (face) or upper body (chest) or the like) P bends toward the edge 17 of the door panel 15A and comes into contact with the cover piece 30 covering the edge 17. This allows
Since it is possible to prevent the occupant's body part P from directly colliding with the edge portion 17 of the hard door panel 15A, even if a secondary disaster should occur, it is possible to reduce the degree of injury. The cover piece 30 is used for the door panel 15A.
If the occupant's body part (head (face), upper body (chest), etc.) P contacts the cover piece 30 when the cover 17 is not greatly bent toward the edge 17 of the cover, The piece 30 is pressed downward and bends toward the edge 17 of the door panel 15A to cover the edge 17. Therefore, even in such a case, it is possible to prevent the body part P of the occupant from directly colliding with the end edge portion 17 of the hard door panel 15A, so that the degree of injury is reduced even if a secondary disaster should occur. It becomes possible.

[0018]

[Second Embodiment] FIG. 4 is a sectional view of a main portion of an instrument panel 10 in which an airbag door according to a second embodiment of the present invention is provided on a panel base material 11. It should be noted that the configurations of the door panels 15A and 15B of the instrument panel 10 and the airbag door 15 are basically the same as those of the first embodiment, and therefore, the same reference numerals are given and the description thereof is omitted and different points. Will be described only.

Also in the airbag door 15 of the second embodiment, the airbag panel 15 of the insert member 25 is opened to at least the passenger seat side by the movable panel 27A.
A cover piece 30 that can cover the edge 17 on the open side of the (door panel 15A) is provided. That is, in the insert member 25, as shown in FIG.
The position where 9 is formed is not set at a position that coincides with the planned center tear line 16a, but is set at a position that is appropriately offset to the door panel 15B on the left side in the drawing that opens to the windshield side. The edge is bent toward the door panel 15A side at a substantially right angle to extend, and the extended portion is used as the cover piece 30.
The extension length of the cover piece 30 is set appropriately larger than the thickness of the door panel 15A.
The edge portion 17 of A can be sufficiently covered (FIG. 6).

As shown in FIG. 5, the insert member 25 is integrally formed with the cover piece 30 protruding upward during injection molding.
Therefore, as shown in FIG. 4, when the insert member 25 fixes each movable panel 27 (27A, 27B) to the back surface of the corresponding door panel 15A, 15B of the airbag door 15, the movable panel 27A on the right side in the figure shows Cover piece 3
The edge portion adjacent to 0 is fixed to the back surface of the door panel 15A in a state where the edge portion is appropriately elastically deformed. That is, the cover piece 3
Since the front end of 0 abuts on the back surface of the door panel 15B on the left side in the figure, the movable panel 27A on the right side in the figure is deformed so that the edge portion is curved.

In the thus constructed air bag door 15 of the second embodiment, the air bag device 20 is actuated and the pressing force of the air bag 21 is applied to the planned tear line 16
Each of the door panels 15A and 15B is opened by rupturing the outer edge planned cleavage line 16b and the central planned cleavage line 16a. At this time, as shown in FIG. 6, in the door panel 15A on the right side which is open to the passenger seat side, as shown in FIG.
When the movable panel 27A is separated from the movable panel 27B, the urging force on the movable panel 27A that has been elastically deformed into a curved shape is released, and
Since A comes to elastically return to the original shape at the time of molding,
The cover piece 30 is the edge 17 of the door panel 15A.
To be covered with the edge portion 17. Therefore, for example, when the occupant is thrown forward due to the reaction when the vehicle collides, the body part P of the occupant comes into contact with the cover piece 30 and directly collides with the edge portion 17 of the hard door panel 15A. Since it is prevented from doing, it should be 2
Even if the next disaster occurs, the degree of injury can be reduced.

[0022]

[Third Embodiment] FIG. 7 is a sectional view of an essential part of an instrument panel 10 in which an air bag door according to a third embodiment of the present invention is provided on a panel base material 11. The configurations of the instrument panel 10 and the door panels 15A and 15B are basically the same as those of the first and second embodiments, and therefore, the same reference numerals are given and the description thereof will be omitted. Only explained.

In the airbag door 15 of the third embodiment, the movable panels 27A, 27 of the insert member 25 are used.
B is a first cover piece 30 capable of covering the open side edge portion 17 of the door panel 15A that is open to the passenger seat side.
And the door panel 15B that opens to the front glass side
And a second cover piece 30 capable of covering the open-side edge portion 17 in the. That is, in the insert member 25, as shown in FIG. 7, in the movable panel 27A on the right side of the drawing, the end edge is appropriately extended and further bent toward the door panel 15A side at a substantially right angle to form an extended portion. On the other hand, the movable panel 27B on the left side of the drawing is also extended appropriately by bending the edge of the movable panel 27B on the left side of the drawing and further extending it toward the door panel 15B side at a substantially right angle. The second cover piece 30 is used. Each cover piece 30, 30
The extension length of the door panel 15 is set to be appropriately larger than the thickness of the corresponding door panel 15A, 15B.
The edges 17 of A and 15B can be sufficiently covered.
(Figure 9).

As shown in FIG. 8, the insert member 25 as described above is provided with the cover pieces provided in the respective movable panels 27 (27A, 27B) in a facing state in which the movable panels 27 (27A, 27B) are appropriately inclined during injection molding. 30 and 30 are integrally molded in a state of further projecting upward. Therefore, as shown in FIG. 7, the insert member 25 fixes each movable panel 27A, 27B to the back surface of the corresponding door panel 15A, 15B in the airbag door 15,
The movable panel 27A on the right side of the drawing has the edge portion adjacent to the cover piece 30 elastically deformed as appropriate to the door panel 1
A movable panel 27B, which is fixed to the rear surface of 5A and is on the left side in the figure
Is fixed to the back surface of the door panel 15B in a state where the edge portion adjacent to the cover piece 30 is appropriately elastically deformed. That is, the tip of each cover piece 30, 30 is the door panel 15
Since it comes into contact with the back surfaces of A and 15B, each movable panel 2
7A and 27B are deformed so that the edge portions are curved.

In FIG. 8, the door panels 15A and 15B are shown.
To the back surface of the movable member 27A, 27 of the insert member 25
When B is fixed, the cover pieces 30, 30 are in contact with each other and pushed back at an acute angle. However, the movable panels 27A and 27B may be fixed to the back surfaces of the door panels 15A and 15B in a state in which the cover pieces 30 and 30 are overlapped with each other and are spread out in an obtuse angle (“V” shape).

In the thus constructed air bag door 15 of the third embodiment, the air bag device 20 is actuated and the pressing force of the air bag 21 is applied, so that the tear line 16 is broken.
Each of the door panels 15A and 15B is opened by rupturing the outer edge planned cleavage line 16b and the central planned cleavage line 16a. At this time, as shown in FIG. 9, in the door panel 15A on the right side, which is open to the passenger seat side, the movable panel 27A elastically returns to the original shape at the time of molding, so that the first cover piece 30 is Edge 1 of door panel 15A
7 is displaced to cover the edge portion 17.
On the other hand, in the door panel 15B on the left side in the drawing which is open to the windshield side, the movable panel 27B comes to elastically return to the original shape at the time of molding, so the second cover piece 30
Is displaced toward the edge 17 of the door panel 15B to cover the edge 17. Therefore, for example, when the occupant is thrown forward due to a reaction upon collision of the vehicle, the body part P of the occupant comes into contact with the first cover piece 30, and the edge portion 17 of the hard door panel 15A.
Since a direct collision with the vehicle is prevented, even if a secondary disaster should occur, the degree of injury can be reduced.

In the airbag door 15 of the third embodiment, when the airbag 21 is deployed, the first cover piece 30 and the second cover piece 30 have their respective door panels 1.
Since the edge portions 17 and 17 of 5A and 15B are covered, it is possible to prevent the airbag 21 from directly contacting the edge portion 17. Therefore, even if a burr or a pointed portion is formed on the edge portion 17, the airbag 2
It is possible to avoid tearing of the vehicle 1 and deployment failure, and the occupant protection function of the airbag 21 is not impaired. Even in the airbag doors 15 of the first and second embodiments, at least the edge portion 17 of the door panel 15A which is open to the passenger seat side has the cover piece 3.
Since the airbag 21 is covered with 0, in view of the fact that the airbag 21 inflates and deploys from above the door panel 15A to the occupant seat side, it is possible to prevent the occupant protection function included in the airbag 21 from being hindered. You can expect the effect.

In the second and third embodiments, the cover panel 30 formed on the edge of the movable panel 27 (27A, 27B) of the insert member 25 is related to the movable panel 27.
An example is shown in which the edges of (27A, 27B) are bent toward the door panels 15A, 15B at a substantially right angle.
The bending mode of 0 is not limited to this. That is, the cover piece 30 is, for example, the movable panel 27 (27
Movable panel 27 (27A, 27B) in which the edge of (A, 27B) is bent toward the door panels 15A, 15B at an obtuse angle.
The edge may be bent in a curved shape (arcuate shape) toward the door panels 15A and 15B.

In each of the above-described embodiments, the airbag door 15 provided on the two-layer type instrument panel 10 has been exemplified. However, the airbag door to which the present invention is directed is a single-layered substrate composed only of the panel base material 11. It may be provided in a three-layer type instrument panel including a panel instrument 11, a skin material 12, and a cushion material.

Further, the airbag door 15 to which the present application is directed
Are the two door panels 15A illustrated in the above-mentioned respective embodiments,
The invention is not limited to the double-opening type made of 15B, and the single-opening type made of one door panel and the four-way opening type made of four door panels are also targeted.

Furthermore, the airbag door 15 to which the present invention is applied is not limited to the one provided on the instrument panel 10. For example, an airbag door for a side airbag provided on a door trim or a pillar garnish is used. Airbag doors for curtain airbags provided, etc. are also targeted.

[0032]

As described above, according to the airbag door of the present invention, for example, when the occupant is thrown forward due to the recoil in the event of a vehicle collision, the body part of the occupant is a flexible insert member. Since it comes into contact with the cover piece provided on the movable panel of the vehicle and prevents it from directly colliding with the edge portion of the hard airbag door, the degree of injury is reduced even if a secondary disaster should occur. Has a possible beneficial effect. Further, the airbag that inflates and deploys toward the occupant seat side when the airbag device is activated comes into contact with the cover piece, and prevents direct contact with the edge portion where burrs or pointed portions are formed. Therefore, there is also an advantage that the occupant protection function included in the airbag is not hindered.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of an instrument panel in which an airbag door according to a first embodiment of the present application is provided on a panel base material.

FIG. 2 is an explanatory cross-sectional view showing a state in which an insert member is mounted on the back surface of a door panel in an airbag door provided on a panel base material.

FIG. 3 is an explanatory cross-sectional view showing that the cover piece provided on the movable panel of the insert member can cover the edge portion of the door panel opened to the passenger seat side.

FIG. 4 is a sectional view of an essential part of an instrument panel in which an airbag door according to a second embodiment of the present application is provided on a panel base material.

FIG. 5 is an explanatory cross-sectional view showing a state in which an insert member is attached to the back surface of a door panel in an airbag door provided on a panel base material.

FIG. 6 is an explanatory cross-sectional view showing that the cover piece provided on the movable panel of the insert member can cover the edge portion of the door panel opened to the passenger seat side.

FIG. 7 is a cross-sectional view of essential parts of an instrument panel in which an airbag door according to a third embodiment of the present application is provided on a panel base material.

FIG. 8 is an explanatory cross-sectional view showing a state in which an insert member is mounted on the back surface of a door panel in an airbag door provided on a panel base material.

FIG. 9 is an explanatory cross-sectional view showing that each cover piece provided on the movable panel of the insert member can cover the edge of the door panel open to the passenger seat and the edge of the door panel open to the windshield. It is a figure.

FIG. 10 is a main-portion cross-sectional view of an instrument panel showing an airbag door provided on a panel base material and an insert member fixed to the back surface of the airbag door.

FIG. 11 is an explanatory cross-sectional view showing that the body part of the occupant directly collides with the edge portion of the door panel that is open to the passenger seat side because the edge portion is exposed.

[Explanation of symbols]

11 Panel base material (base material) 15 airbag door 15A, 15B door panel 16 Expected cleavage line 17 Edge 20 Airbag device 21 airbag 25 Insert member 27 (27A, 27B) Movable panel 30 cover pieces

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3D044 BA07 BA14 BB01 BC03 BC15                       BC30                 3D054 AA03 AA14 BB09 BB16 BB23                       BB24

Claims (5)

[Claims] 1. An insert member (2) which is formed integrally with a base material (11) of a vehicle interior member and has appropriate flexibility.
The movable panel (27) of 5) is fixed to the back side,
Air which is separated from the base material (11) and is opened integrally with the movable panel (27) by breaking the planned cleavage line (16) provided on the base material (11) during the operation of (20). In the bag door (15), the movable panel (27) of the insert member (25) has an edge portion of the airbag door (15) that is open to at least the passenger seat side.
A cover piece (30) capable of covering (17) is provided, and the edge portion (17) of the airbag door (15), which is opened by the operation of the airbag device (20) and faces the passenger seat, is covered with the cover. An airbag door, characterized in that it is configured so as to prevent a body part of an occupant from directly colliding with the edge portion (17) by being covered with a piece (30). 2. The cover piece (30) includes the movable panel (2).
7 / 27A) edge of the airbag door (15 / 15A) edge (1
7) is a portion extended so as to be slightly disengaged, and when the airbag door (15 / 15A) is opened, the end portion (17) is bent by bending toward the end portion (17). The airbag door according to claim 1, wherein the airbag door is covered. 3. The movable panel (27 / 27A, 27B) is provided with the cover piece (30) when molding the insert member (25).
The edge of the airbag door (15 / 15A, 15B) is a portion that extends so as to be bent appropriately, the edge portion when the airbag door (15 / 15A, 15B) is opened. The airbag door according to claim 1, wherein the airbag door is displaced toward the side (17) to cover the edge portion (17). 4. The movable panel (27 / 27A, 27B) is fixed to the back surface of the airbag door (15 / 15A, 15B) in a state where a portion adjacent to the cover piece (30) is appropriately elastically deformed. When the airbag doors (15 / 15A, 15B) are opened, the cover piece (30) is displaced toward the end edge portion (17) by elastically returning to the original shape, and the end edge portion (17) is moved. The airbag door according to claim 3, wherein the airbag door is covered with 17). 5. The cover piece (30) covers the edge portion (17) of the airbag door (15) when the airbag (21) is deployed during the operation of the airbag device (20). The airbag door according to any one of claims 1 to 4, wherein the airbag (21) can be prevented from coming into direct contact with the edge portion (17).