JP2001301559A - Support structure of air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct a position of an air bag device easily and connect a connection part of the air bag device with a fixing part of a vehicle when a lid part is integrally formed on a cover and the air bag device is arranged on a rear side of the lid part. SOLUTION: A scattering prevention member 3 is attached to a rear surface of the lid part, a first receiving member 4 is extended from the scattering prevention member 3 at a position of a hinge part of the lid part to support a support member 7 on the first receiving member 4, and the support member 7 is provided with an air bag 8, an inflator 6, and a connection part 7b. A position of the support member 7 is corrected and the connection part 7b of the support member 7 is connected with the fixing part of the vehicle by changing a direction of the first receiving member 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle such as a passenger car or a commercial vehicle, which is used for a front seat (in the case of a front seat, a position inside a center of a steering wheel, a dashboard panel, etc., and a rear seat). Is the position of the seat back of the front seat, etc.), the side of the seat (the position of the side portion of the seat back, the B pillar, the C pillar, the side door, etc.), the airbag device arranged on the A pillar, the roof side frame, etc. Related to the support structure.

[0002]

2. Description of the Related Art When an airbag device is provided, a cover for covering the airbag is required. Therefore, the cover is provided with a lid portion for deploying the airbag. Is configured to expand and expand while opening the lid portion. When the cover is provided with the lid portion as described above, if the cover and the lid portion are configured as separate components, it may be difficult to align the cover and the lid portion, and a step may be formed between the cover and the lid portion. For example, as disclosed in JP-A-7-329675, a lid portion is integrally formed on a cover so as to eliminate a step between the cover and the lid portion, and air is formed on the back surface of the lid portion. Some are configured to attach a bag device.

In the structure of the above-mentioned Japanese Patent Application Laid-Open No. 7-329675, a rectangular box-shaped support member (16, 20 in FIGS. 1 and 2 of the above publication) is formed, and a lid support member ( 23 and 24 in FIGS. 1 and 2 of the above publication)
The support member is attached to the back surface of the lid portion via. The airbag device is attached to the support member, and the connecting portion (40 in FIG. 1 of the above publication) of the airbag device is connected to the fixing portion of the vehicle to fix the airbag.

With the above structure, the weight of the airbag device is supported and positioned by the fixed portion of the vehicle via the connection portion of the airbag device. When the airbag is inflated and deployed, the airbag is deployed. While the bag is received by the support member, the lid is opened and inflated and deployed. The lid support member extending from the support member is attached to the rear surface of the lid portion to prevent the lid portion from being torn off from the cover and scattered in the vehicle when the lid portion is opened due to inflation of the airbag. It is.

[0005]

Since the positional relationship between the cover (lid portion) and the fixed portion of the vehicle has a certain degree of variation in the vehicle, Japanese Unexamined Patent Publication No.
When the airbag device is supported by a support member attached to the rear surface of the lid (cover) as in the structure of Japanese Patent No. 329675, when the connecting portion of the airbag device is connected to the fixed portion of the vehicle, the airbag device is mounted on the vehicle. It is necessary to connect the connecting part of the airbag device to the fixed part of the vehicle while correcting the position.

However, the above-mentioned Japanese Patent Application Laid-Open No. 7-32967 has been disclosed.
In the structure disclosed in Japanese Patent Laid-Open Publication No. 5 (1993) -1995, the support member for supporting the airbag device is formed in a rectangular box shape and has sufficient rigidity. Therefore, the support member supports the airbag device as described above. After that, it may be difficult to correct the position of the airbag device, and it is possible to connect the connecting portion of the airbag device to the fixed portion of the vehicle while correcting the position of the airbag device, It can be difficult.

According to the present invention, in a support structure of an airbag device, when a lid portion is integrally formed on a cover and the airbag device is arranged behind the lid portion, the cover (lid portion) and the vehicle are provided. Even if there is some variation in the positional relationship between the airbag device and the fixing portion, the connecting portion of the airbag device can be connected to the fixing portion of the vehicle while easily correcting the position of the airbag device. It is an object.

[0008]

According to the first aspect of the present invention, when the lid is formed integrally with the cover, a scattering prevention member is attached to the back surface of the lid, and the hinge is opened. In the position (1), the first receiving member extends from the scattering prevention member to the rear surface side of the cover, and the supporting member including the airbag, the inflator, and the connecting portion is supported by the first receiving member. The second receiving member is not connected to the first receiving member.

Accordingly, when the lid is opened with the inflation of the airbag, the scattering prevention member is opened together with the lid against the first receiving member. In other words, in a normal state where the airbag does not inflate, the scattering prevention member (cover and lid portion)
The direction of the first receiving member can be changed at a portion where the scattering prevention member opens. As described above, if the direction of the first receiving member can be changed regardless of the second receiving member, after the supporting member is supported by the first receiving member, the connecting portion of the supporting member is connected to the fixing portion of the vehicle. When connecting, even if the connecting portion of the support member is slightly deviated from the fixing portion of the vehicle, the position of the supporting member is corrected by changing the direction of the first receiving member, and the connecting portion of the supporting member is fixed to the vehicle. Then, the connecting portion of the supporting member may be connected to the fixed portion of the vehicle.

[II] Japanese Unexamined Patent Publication No. 7-3 described in the prior art
In the structure of Japanese Patent No. 29675, since the support member for supporting the airbag device is formed in a rectangular box shape, the process of bending the plate material into a square shape and the fixing of connecting the bent plate materials into a box shape are performed. Production costs are relatively high.

According to a feature of the first aspect, as described in the above item [I], the first receiving member and the second receiving member include:
Since they are separately arranged without being connected to each other, as in the structure of the above-mentioned Japanese Patent Application Laid-Open No. 7-329675, a step of bending a plate material into a square shape and a step of connecting the bent plate materials to assemble into a box shape Is not required.

[III] According to the feature of the second aspect, similar to the case of the first aspect, the "action" described in the above-mentioned [I] and [II] is provided, and in addition, the following "action" is provided. "
It has. According to the second aspect of the present invention, the first receiving member or the supporting member is provided with a flexible portion capable of changing a supporting position of the supporting member with respect to the first receiving member.
Accordingly, when the connecting portion of the support member is connected to the fixed portion of the vehicle after the support member is supported by the first receiving member, the direction of the first receiving member is changed as described in the above item [I]. In addition to being able to correct the position of the support member, the position of the support member can be corrected by changing the support position of the support member with respect to the first receiving member by the interchangeable portion. Even if the portion is relatively large off the fixed portion of the vehicle, the connecting portion of the support member can be adjusted to the fixed portion of the vehicle.

[IV] According to the feature of claim 3, as in the case of claim 1 or 2, similar to the above-mentioned claim [I] [II] [III]
And the following "action" in addition to the above. When the cover is provided with a lid portion, the cover is provided with a plurality of lid portions so as to be adjacent to each other, and the connection portions of the adjacent lid portions are separated with the inflation of the airbag, so that the plurality of lid portions are connected to the respective hinges. May be configured to be opened in parts. In such a configuration, the connecting portion of the adjacent lid portion may be configured to be relatively weaker than the other cover or the portion of the lid portion so as to be easily separated (for example, the connecting portion of the adjacent lid portion). Or forming a groove on the back surface of the substrate to reduce the thickness of the connection part of the adjacent lid part).

If the connecting portions of the adjacent lid portions are configured to be relatively weak as described above, an occupant may often push the connecting portions of the adjacent lid portions by hand during getting on and off. If repeated, the connection portion of the adjacent lid portion may be discolored due to repeated displacement.

According to the third aspect of the present invention, the scattering prevention member is provided on the back surface of each of the plurality of lid portions, and the scattering prevention member is located on the back surface of the connection portion between the adjacent lid portions.
As a result, since the connection portion of the adjacent lid portion is supported by the scattering prevention member from the back surface, even if the occupant pushes the connection portion of the adjacent lid portion by hand at the time of getting on or off as described above. In addition, the displacement of the connection portion of the adjacent lid portion is suppressed by the scattering prevention member, and a state in which the connection portion of the adjacent lid portion is discolored due to repeated displacement is avoided.

[V] According to the features of claim 4, claim 3
"Action" described in [I] to [IV] above as in the case of
In addition to this, the following “action” is provided. If the end portion of the scattering prevention member of one lid portion enters the back surface of the adjacent lid portion beyond the connection portion, the end portion of the scattering prevention member is opened when the lid portion is opened due to inflation of the airbag. It is conceivable that the penetration into the rear surface of the adjacent lid portion becomes a resistance, and the lid portion provided with the scattering prevention member that enters the rear surface of the adjacent lid portion opens a little later.

According to a fourth aspect of the present invention, the ends of the scattering prevention members of the adjacent lid portions are alternately inserted into one back surface and the other back surface of the adjacent lid portion, and the connection portion of the adjacent lid portions is formed. Is configured to intersect the back surface a plurality of times. Thereby, since it becomes possible to constitute so that the edge parts of the scattering prevention member may penetrate substantially equally into the one back surface and the other back surface of the adjacent lid portion,
When the adjacent lids are opened with the inflation of the airbag, a relatively small resistance is almost equally applied to the adjacent lids, avoiding a situation in which a relatively large resistance is biased to one of the adjacent lids. And the adjacent lid portions can be opened without delay with each other with the inflation of the airbag.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 show a resin cover 1 provided on a dashboard panel (not shown) located in front of a passenger seat (not shown) in a passenger car, a commercial vehicle or the like. , And as shown in FIGS. 2 and 3,
Three lateral grooves 1a, 1b and two vertical grooves 1c at both ends of the grooves 1a, 1b are formed on the back surface of the cover 1, and the two lids 2 are formed by the grooves 1a, 1b, 1c.
Are formed integrally with the cover 1.

As shown in FIGS. 1, 2 and 3, long holes 3a are opened in a line in a single metal plate, and the plate is bent at a narrow connecting portion 3b between the long holes 3a. The plate-shaped scattering prevention member 3 and the plate-shaped first receiving member 4
Are configured. As shown in FIG. 3, a large number of projections 2 a are integrally formed on the back surface of the lid 2, and the projections 2 a of the lid 2 are inserted into openings of the scattering prevention member 3, and The protrusion 2 a is subjected to a heat treatment, and the scattering prevention member 3 is attached to the rear surface of the lid 2. As shown in FIGS. 1 and 3, two flat second receiving members 5 are provided.
Are integrally formed on the back surface of the cover 1, and the second receiving member 5 is disposed on the right and left sides of the first receiving member 4 with a small space therebetween.

As shown in FIG. 2, two scattering prevention members 3
Are formed in a jig-jig shape so that the tip portions 3c of the two are engaged with each other, and the tip portions 3c of the two scattering prevention members 3 alternately enter the back surface of one lid portion 2 and the back surface of the other lid portion 2. While crossing the back surface of the groove 1b a plurality of times. The lateral end portions 3d of the two scattering prevention members 3 are substantially along the back surface of the groove 1c, and the long holes 3a and the connection portions 3b of the two scattering prevention members 3 are provided.
Are substantially along the back surface of the groove 1a.

As shown in FIGS. 1 and 3, a round inflator 6 is provided, and a flange portion of the inflator 6 is extended so that a support member 7 having a square shape in plan view is integrated with the inflator 6. Is formed. A large number of injection holes 6a are provided on an outer peripheral portion of an upper portion of the inflator 6, and an inside of the inflator 6 is filled with an igniter (not shown), an enhancer (not shown), and a gas generating agent (not shown). . The airbag 8 is folded and covered on the inflator 6, and the airbag 8 is fixed to the support member 7 via bolts and nuts via a square ring-shaped fixing member 9.

As shown in FIGS. 1 and 3, the engaging portion 7a extends so as to protrude from four portions of the support member 7, and the tips of the two engaging portions 7a are slightly bent downward. . The connecting portion 7b extends from two places of the support member 7,
The connecting portion 7b is bent downward. Two first
Each of the receiving members 4 has two engagement holes 4a.

With the above structure, as shown in FIGS. 1 and 3, the support member 7 having the airbag 8 and the inflator 6 is taken from below to the first and second receiving members 4 and 5, and While inserting the airbag 8 into the first and second receiving members 4 and 5, the two bent engagement portions 7a
Is inserted into the engaging hole 4a of the first receiving member 4, and the remaining two engaging portions 7a are inserted into the engaging hole 4a of the other first receiving member 4 and bent, so that the support member 7 is bent. Is supported by the first receiving member 4.

In this case, as shown in FIGS. 1 and 2, the first receiving member 4 is connected to the scattering prevention member 3 through the narrow connecting portion 3b, so that the connecting portion 3b is slightly bent. Thereby, the direction of the first receiving member 4 can be changed to the left-right direction in FIG. As shown in FIGS. 1 and 3, the engagement hole 4a is set to be slightly larger than the engagement portion 7a. 3 can be slightly moved in the vertical direction and the horizontal direction.

Thus, if the connecting portion 7b of the supporting member 7 is disengaged from the fixing portion 10a of the frame 10 of the vehicle when the supporting member 7 is supported by the first receiving member 4, as described above, As described above, the direction of the first receiving member 4 is changed in the left-right direction in FIG. 3 with respect to the scattering prevention member 3, and the position of the support member 7 in the range of the engagement hole 4 a is changed in the vertical direction in FIG. And by slightly moving the connecting portion 7b of the supporting member 7 with the fixing portion 10a of the vehicle frame 10 by slightly moving the connecting member 7b of the supporting member 7 to the fixing portion 10a of the vehicle frame 10. And a nut.

With the above structure, when a collision sensor (not shown) provided on the vehicle body detects a collision, the enhancer is ignited by the igniter in the inflator 6, and the gas generating agent is burned by the combustion of the enhancer to generate gas. Gas generated from the agent is radially injected from the injection hole 6a in the outer peripheral direction. From the periphery of the airbag 8 to the airbag 8
Gas flows toward the center of the airbag 8 and the airbag 8 is inflated while being received by the first and second receiving members 4 and 5, and the airbag 8 pushes the lid portion 2 and the scattering prevention member 3. As a result, the grooves 1b and 1c are torn, and the lid 2 is opened using the groove 1a as a hinge (a slot 3).
a and the connecting portion 3b as a hinge portion
Is opened), the peripheral portion of the airbag 8 expands and deploys first, and the central portion of the airbag 8 expands and deploys later.

In this case, since the cover 1 and the lid 2 are made of resin, the groove 1a may be torn by the inflation of the airbag 8 and the lid 2 may be torn off from the cover 1 as described above. 3 and the connecting portion 3b are made of metal, and the scattering prevention member 3 is connected to the first metal receiving member 3 via the connecting portion 3b, so that the connecting portion 3b does not tear. Thus, even if the lid portion 2 is torn off from the cover 1 due to the inflation of the airbag 8, the lid portion 2 is not scattered in the vehicle because the lid portion 2 is attached to the scattering prevention member 3.

[First Embodiment of the Invention] FIGS. 1, 2, and 3
4 and 5, the fixing member 9 (see FIG. 1) may be omitted, and the inflator 6 and the support member 7 may be configured as separate members, as shown in FIGS. Thus, the airbag 8 is fixed to the support member 7 via the inflator 6 with the bolt and the nut.

[Second Alternative Embodiment of the Invention] In the above-mentioned [Embodiment of the Invention] and [First Alternative Embodiment of the Invention], three vertically oriented grooves 1a and 1b and grooves 1a and 1b are provided. Are formed on the back surface of the cover 1, and two lids 2 are integrally formed on the cover 1 by the grooves 1a, 1b, 1c so as to be arranged side by side. Alternatively, the two lids 2 arranged on the left and right may be configured to open left and right. With this configuration, the two anti-scattering members 3 attached to the back surface of the lid portion 2 are also arranged side by side, and the second receiving member 5 is directed laterally upward and downward with respect to the first receiving member 4. Be placed.

Third Embodiment of the Invention In the above-mentioned [Embodiment of the Invention] and [First Embodiment of the Invention], the right side of the two lid portions 2 shown in FIG. A lid part 2 that opens to the left is formed integrally with the cover 1, and a lid part 2 that opens to the left next to the left of the two lid parts 2 is formed integrally with the cover 1, and four lid parts 2 are provided. You may. In this case, the same thing as the scattering prevention member 3 and the first receiving member 4 may be attached to the rear surface of the right and left adjacent lid portions 2 to form the second receiving member 5.

In the second embodiment of the invention described above, the lid part 2 which opens upwardly next to the two lid parts 2 is formed integrally with the cover 1 and the two lid parts 2 A lid part 2 that opens downward on the lower side is formed integrally with the cover 1,
Four lids 2 may be provided. In this case, the same members as the scattering prevention member 3 and the first receiving member 4 may be attached to the back surfaces of the upper and lower adjacent lid portions 2 to form the second receiving member 5.

[Fourth Embodiment of the Invention] In the above-mentioned [Embodiment of the Invention] and [First Embodiment of the Invention], two lateral grooves 1a, 1b and 1a, 1b are formed. Two vertical grooves 1c at both ends are formed on the back surface of the cover 1, and one lid 2 is formed integrally with the cover 1 by the grooves 1a, 1b, 1c, and the lid 2 is an upper groove. 1
a may be configured to open upward as a hinge portion. With this configuration, the first and the second receiving members 5 are arranged at three places on the right side, the left side, and the lower side with respect to one scattering prevention member 3 attached to the back surface of the lid portion 2. 2 Support member 7 on receiving members 4 and 5
Is configured to be supported.

[Fifth Embodiment of the Invention] In the above-mentioned [Embodiment of the Invention] to [Third Embodiment of the Invention], as shown in FIGS. Member 3
Are not linearly formed in a jig-jig shape so as to mesh with each other, and all of the distal end portions 3c of the two scattering prevention members 3 are separated from the back surface of the groove 1b. You may comprise so that it may enter into the back surface of the lid part 2.

In the fourth embodiment of the present invention described above, the tip 3c of the scattering prevention member 3 is not formed in a jig-jig shape but is formed in a straight line so that the tip 3c of the scattering prevention member 3 is formed. All may be configured so as to be detached from the back surface of the groove 1b and enter the back surface of the cover 1. In this case,
The distal end portion 3c of the scattering prevention member 3 entering the back surface of the cover 1 may be configured to be easily bent in the opening direction so that the lid portion 2 and the scattering prevention member 3 open without any trouble when the airbag 8 is inflated.

[Sixth Embodiment of the Invention] In the aforementioned [Embodiment of the Invention] to [Fifth Embodiment of the Invention], the following [1] to [4] are used. Is also good. [1] The support member 7 is provided with the engagement hole 4a, and the engagement portion 7a is provided in the first receiving member 4. The second receiving member 5 is formed integrally with the support member 7 instead of the back surface of the cover 1. [2] The scattering prevention member 3 and the first receiving member 4 are formed as separate members, and the scattering prevention member 3 and the first receiving member 4 are connected. Thus, by slightly bending the connecting portion, the direction of the first receiving member 4 is changed with respect to the scattering prevention member 3, and the scattering preventing member 3 is opened with the connecting portion being a hinge portion with the inflation of the airbag 8. It is. [3] The connecting portion 7b of the support member 7 is also provided with a long hole (not shown) for accommodation for connection. Thus, even if the connecting portion 7b of the supporting member 7 is slightly displaced from the fixing portion 10a of the vehicle frame 10, the connecting portion 7b of the supporting member 7 can be bolted to the fixing portion 10a of the vehicle frame 10 by the long hole. And a nut. [4] Instead of forming the dashboard panel and the cover 1 separately, the cover 1 and the lid 2 are integrally formed on the dashboard panel.

[0036]

According to the first aspect of the present invention, in the support structure of the airbag device, when the lid portion is integrally formed on the cover and the airbag device is arranged behind the lid portion, Even if there is some variation in the positional relationship between the (lid portion) and the fixed portion of the vehicle, the position of the support member can be easily corrected by changing the direction of the first receiving member, and the connecting portion of the support member Can be connected in accordance with the fixed portion of the vehicle, and the workability of mounting the airbag device can be improved. In this case, according to the feature of claim 1, since the first receiving member extends from the scattering prevention member of the lid portion, when the lid portion is opened with the inflation of the airbag, the lid portion is torn from the cover. The advantage that it can be prevented from being scattered inside the vehicle is provided as it is.

According to the first aspect of the present invention, the first receiving member and the second receiving member are separately arranged without being connected to each other, and the step of bending the plate material into a square shape and the step of connecting the bent plate material are performed. This eliminates the need for a box-assembly process, which is advantageous in terms of reducing production costs.

According to the features of the second aspect, the "effect of the invention" of the first aspect is provided similarly to the case of the first aspect. In addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of claim 2, the position of the support member can be corrected by changing the direction of the first receiving member, and the first portion is provided by the flexible portion.
Change the support position of the support member with respect to the receiving member,
Since the position of the support member can be corrected, it is possible to connect the connection portion of the support member to the fixed portion of the vehicle even if the connection portion of the support member is relatively largely deviated from the fixed portion of the vehicle. As a result, the workability of mounting the airbag device could be improved.

According to the feature of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. According to the feature of the third aspect, the cover is provided with a plurality of lid portions adjacent to each other, and a connection portion of the adjacent lid portions is separated with inflation of the airbag, so that the plurality of lid portions are each hinged. In the case where the connection portion of the adjacent lid portion is configured to be opened by the portion, the connection portion of the adjacent lid portion is supported by the scattering prevention member from the back surface, so that the connection portion of the adjacent lid portion is discolored by repeated displacement. The state can be avoided, and the quality of the cover and the lid part can be maintained.

According to the feature of the fourth aspect, the "effect of the invention" of the third aspect is provided similarly to the case of the third aspect, and in addition to the "effect of the invention", the following "invention" is provided. Of the effect. According to the feature of the fourth aspect, it is possible to configure so that the ends of the scattering prevention member enter the one back surface and the other back surface of the adjacent lid portion substantially evenly, and with the inflation of the airbag. When the adjacent lid portions are opened, a relatively small resistance is applied to the adjacent lid portions substantially uniformly, so that the adjacent lid portions can be opened without delay, so that one of the adjacent lid portions can be opened. By opening the airbag a little later, it was possible to prevent the airbag from inflating properly and failing to deploy.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a scattering prevention member, first and second receiving members, an airbag device, and the like.

FIG. 2 is a front view of a lid portion and a scattering prevention member.

FIG. 3 is a longitudinal sectional side view showing a scattering prevention member, first and second receiving members, an airbag device, and the like.

FIG. 4 is an exploded perspective view showing a scattering prevention member, first and second receiving members, an airbag device, and the like according to the first alternative embodiment of the invention.

FIG. 5 is a vertical sectional side view showing a scattering prevention member, first and second receiving members, an airbag device, and the like according to a first alternative embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cover 2 lid portion 3 scattering prevention member 3c end of scattering prevention member 4 first receiving member 4a flexible portion 5 second receiving member 6 inflator 7 supporting member 7b connecting portion 8 airbag 10a fixing portion of vehicle body

Claims (4)

[Claims] 1. A lid part which is opened by the airbag when the airbag is inflated is formed integrally with a cover, a scattering prevention member is attached to a back surface of the lid part, and a hinge part which opens the lid part. A first receiving member extends from the scattering prevention member to the back side of the cover, and a supporting member is supported by the first receiving member, and the supporting member inflates the airbag and the airbag. An inflator to be deployed and deployed, and a connecting portion for connecting to a fixed portion of the vehicle body, and a second receiving member at a position different from the first receiving member at a lateral side position of the airbag, The airbag is received by the first and second receiving members when the airbag is inflated and deployed, provided on the back surface of the cover or on the support member. While the open air bag the lid portion and the scattering prevention member at the hinge portion, the support structure of the airbag apparatus is arranged to deploy expand to. 2. The support structure for an airbag device according to claim 1, wherein the first receiving member or the supporting member includes a flexible portion capable of changing a supporting position of the supporting member with respect to the first receiving member. 3. A cover having a plurality of lid portions adjacent to each other, and when the airbag is inflated and deployed, a connection portion of the adjacent lid portions is separated by the airbag, The plurality of lid portions are configured to be opened at respective hinge portions, and the scattering prevention member is provided on a back surface of each of the plurality of lid portions, and the scattering portion is provided on a back surface of a connection portion of the adjacent lid portion. The support structure for an airbag device according to claim 1, wherein the prevention member is located. 4. An end portion of the scattering prevention member of the adjacent lid portion is alternately inserted into one back surface and the other back surface of the adjacent lid portion, and the ends of the connection portions of the adjacent lid portions are removed. 4. The support structure for an airbag device according to claim 3, wherein the positions of the ends of the scattering prevention members of the adjacent lid portions and the connection portions of the adjacent lid portions are set so as to intersect a plurality of times.