JP2001315607A - Opening structure of air bag door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the suitable full development of an air bag to a cabin, and to prevent a door panel from being broken. SOLUTION: Movable reinforcing panels 31, 31 are mounted on a fixed bracket 26 in an outwardly opening manner via a connection member 32 provided with an expandable semi arc-like slackening portion 32a. The length of the slackening portion 32a in an expanded condition is set to the dimension permitting door panels 13, 14 to be opened and displaced at the position where the full development of the air bag 21 into a cabin is not prevented, and also at the position where the air bag is prevented from being collided with the surface of a base material 11. The opening displacement of the door panels 13, 14 is stopped when the slackening portion 32a is completely expanded, and the breakage caused by the collision with the base material 11 is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for opening an airbag door, and more particularly, to two structures which are integrally formed on a base material of a vehicle interior member and open to both sides when an airbag device is operated. In an airbag door comprising a door panel portion and two movable reinforcing panels fixed to the door panel portion so as to be openably mounted on a bracket disposed on the back side of the base member, operation of the airbag device When the airbag which has started to inflate presses the movable reinforcing panel from the inside, the to-be-cleaved portion formed along the adjacent central line and the outer edge line of the two door panel portions is broken, and the door panel is broken. The present invention relates to an opening structure in which a portion is suitably opened to a passenger compartment side.

[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 occupants from an impact due to a collision or the like. The driver's seat airbag device is generally provided in a horn pad portion at the center of the steering,
The passenger-side airbag device is, for example, shown in FIGS.
As shown in FIG. 1, the vehicle is installed in a state in which it is housed inside the front of the passenger seat in the instrument panel 10 as a vehicle interior member assembled in front of the passenger compartment 45. For this reason,
On the panel base material 11 of the instrument panel 10, an airbag door 12 that opens and displaces toward the passenger compartment 45 is separately mounted or integrally formed at a portion corresponding to the passenger seat airbag device 20. Base material 11
The opening from the passenger compartment 45 defines an opening that opens to the passenger compartment 45. That is, when the airbag device 20 is operated upon sensing the impact of the collision, the inflated airbag 21 pushes the airbag door 12 open from the inside and enters the occupant compartment 45 through the defined opening. It will expand.

Conventionally, the airbag door 12 is mainly formed separately from the panel base material 11 of the instrument panel 10 and is attached thereto.
There are many things that are integrally formed on the panel base material 11. That is, as shown in FIGS. 10 and 11, the design surface of the airbag door 12 is always formed as a part of the panel base material 11, and the pressing force of the airbag 21 which is inflated by the operation of the airbag device 20. When receiving, the to-be-cleaved portions 15, 16 provided in advance on the panel base material 11
The break along the line allows the substrate to be separated and opened. The form of the airbag door 12 is, for example, a single-opening type having one door panel portion or a double-opening type having two door panel portions.
However, in any case, it is an important requirement that the smooth deployment of the airbag 21 from the start of inflation to the completion of inflation be about 1/100 second is not prevented.

The panel substrate 11 which integrally forms the airbag door 12 is generally made of a synthetic resin such as polypropylene. The panel base material 11 including the bag door 12 itself may be greatly damaged, and there is a possibility that a problem occurs in strength and safety. For this reason, for example, a metal reinforcing member 25 is provided around the airbag door 12 on the back side of the panel base material 11 in order to prevent breakage and scattering of the airbag door 12.
Measures are taken to increase the strength by caulking.

[0005] The metal reinforcing member 25 is a double-door type airbag door 12 comprising two door panel portions 13 and 14.
Is assumed, the door panel portion 1 formed on the panel substrate 11 as shown in FIG. 11 and FIG.
A rectangular frame-shaped fixing bracket 26 that is fixed so as to surround the scheduled outer edge cleavage portion 16 formed along the outer edge line of the brackets 3 and 14, and is mounted opposite to each other inside the opening of the fixing bracket 26. It is composed of movable brackets 27,27. The fixing bracket 26 includes a tubular body 28 that locks and holds the airbag device 20, and an engaging plate 29 that is integrally formed with the tubular body 28 and is caulked to the back side of the panel substrate 11. It is configured. The movable brackets 27 correspond to the door panels 13 and 14 of the airbag door 12, respectively. The fixed support panel 30 which is welded or screwed to the cylindrical body 28 of the fixed bracket 26, Fixed support panel 30
Door panels 13 and 14 which are swingably joined to
And a movable reinforcing panel 31 which is crimped and joined to the rear surface of the panel. In the panel base material 11 on which the metal reinforcing member 25 is mounted, the door panel portions 13 and 14 of the airbag door 12 and the periphery of the outer edge of the airbag door 12 are reinforced, so that the airbag 21 is intensely pushed. The strength is given so that it can sufficiently withstand pressure.

Here, as shown in FIG. 12A, the movable brackets 27, 27 of the conventional metal reinforcing member 25 simply fold the movable reinforcing panel 31 with respect to the fixed support panel 30 at a bending fulcrum 38. When the airbag 21 pressed the movable reinforcing panel 31, the movable reinforcing panel 31 was oscillated about the bending fulcrum 38. However, in the airbag door 12 having such a configuration, as shown in FIG. 12B, the door panel portion 1 caulked to the movable reinforcing panel 31 is provided.
4 (13), the end 14a (13a) on the outer edge line side interferes with the panel base material 11, and each door panel portion 14
There is a disadvantage that the opening displacement of (13) is restricted and smooth deployment of the airbag 21 into the passenger compartment 45 cannot be guaranteed. Further, the airbag 21 is provided with the movable reinforcing panel 31.
When the door panel portion 14 (13) is forcibly pressed, the door panel portion 14 (13) is pushed in the direction of the arrow shown in FIG. 12 (b) due to the interference of the end portions 14a (13a). There was a fear of being separated from the movable reinforcing member 31 and scattered.

[0007]

In order to avoid the above-mentioned inconvenience, the movable reinforcing panel 31 is connected to the fixed support panel 30 by a connecting member which can be extended and deformed, or a connecting member which can be slid. When the airbag 21 presses the movable reinforcing panel 31, the door panel parts 13 and 14 are first formed by first breaking the scheduled to be cleaved at the outer edge 16 and expanding or slidingly displacing the connecting member. An airbag door has been proposed in which the door panel portions 13 and 14 are lifted from the material 11 and then the center cleave portion 15 is broken to open and displace the respective door panel portions 13 and 14. In the airbag door having such a configuration, the door panel portion 14 (1) crimped to the movable reinforcing panel 31 is provided.
3) The door panel portion 14 (13) can be opened and displaced while avoiding the interference between the end portion 14a (13a) and the panel base material 11, and each door panel portion 14 (13) is greatly opened. It is possible to prevent the smooth deployment of the airbag 21 into the passenger compartment 45 entirely.

However, in the above-mentioned improved airbag door, the end portions 13a, 14a of the door panel portions 13, 14 and the panel base material 11 are raised by the floating of the door panel portions 13, 14.
Although the interference with the door panel portions 13 and 14 pressed by the airbag 21 can be suitably avoided, a new problem arises in that the respective door panel portions 13 and 14 are vigorously opened and displaced to collide with the outer surface of the panel base material 11. . That is, in the improved airbag door, since the opening displacement of the door panels 13 and 14 is not restricted at all, the impact at the time of collision with the panel base material 11 is further larger than the conventional one shown in FIG. There is a possibility that the degree of breakage of the panels 13 and 14 and the panel substrate 11 may be increased.

[0009]

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problem suitably. The door panel portion is separated from the base material by the inflation of the airbag due to the operation of the airbag device, and the door panel portion is appropriately displaced after floating. In this case, the door panel portion pressed by the airbag is configured to stop opening before colliding with the base material, thereby providing an opening structure of the airbag door in which the door panel portion and the base material are prevented from being damaged. With the goal.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the intended object, the present invention is formed integrally with a base material of a vehicle interior member, and is opened to both sides when an airbag device is operated. Two door panel portions to be opened, and two movable panels fixed to the back side of the door panel portion so as to be capable of opening both sides via a connecting member having a slack portion on a bracket disposed on the back side of the base material. When the airbag inflated by the operation of the airbag device presses the movable reinforcing panel from the inside, first, the slack portion of the connecting member expands and deforms, thereby forming the outer edge of the door panel portion. The portion to be cleaved formed along the line breaks to lift the door panel portion from the base material, and then the portion to be cleaved along the adjacent center line of the door panel portion breaks. Then, the door panel portion is opened and displaced toward the occupant compartment, whereby the airbag door is fully deployed in the occupant compartment. While being formed in a deformable semi-arc shape, both ends of the arc of the slack portion are located close to the inner wall surface of the cylindrical body portion of the bracket, and the length of the slack portion when extended is the door panel portion, At a position that does not block the entire deployment of the airbag,
When the airbag presses the movable reinforcing panel from the inside to open the respective door panel portions, the connecting member is set to a size that allows opening displacement to a position that does not collide with the surface of the base material. The opening displacement of the door panel portion is stopped when the slack portion is completely extended, thereby preventing each door panel portion from colliding with the surface of the base material.

Another object of the present invention is to solve the above-mentioned problem and to achieve an intended object. Another invention is to provide a vehicle having two sheets integrally formed on a base material of a vehicle interior member and opened to both sides when an airbag device is operated. Two movable reinforcements which are attached to the door panel portion and a bracket provided on the back side of the base member so as to be openable through a connecting member slidably movable, and are fixed corresponding to the back side of the door panel portion. When the airbag which has been inflated by the operation of the airbag device presses the movable reinforcing panel from the inside, first, the connecting member is slid and displaced along the outer edge line of the door panel portion. The formed tearable portion breaks to lift the door panel portion from the base material, and then the tearable portion formed along the adjacent center line of the door panel portion breaks. Then, the door panel portion is opened and displaced toward the occupant compartment, whereby the airbag is fully deployed in the occupant compartment. In the airbag door, the respective connecting members extend along the sliding direction. It is assembled to the bracket by inserting a rod-shaped member through the elongated slot-shaped slit, allowing a sliding movement from one end of the slit to the other end, the length of the slit, the door panel portion, The airbag is set to a position that does not prevent the entire deployment of the airbag, and is set to a size that allows the connecting member to be moved to a position that allows an open displacement to a position that does not collide with the surface of the base material. When the reinforcing panel is pressed from the inside and each door panel is opened, the connecting member slides and the other end of the slit comes into contact with the rod-shaped member. Opening displacement of the door panel portion is stopped, the door panel part of each is characterized by being configured to prevent the impinging on the surface of the substrate at the.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an airbag door opening structure according to the present invention. In the embodiment, the instrument panel 1 shown in FIG.
0, and in the section of the prior art described with reference to FIGS. 10 to 12, the same members as those already described are denoted by the same reference numerals.

FIG. 1 is a schematic perspective view, partially broken away, showing an open structure of an airbag door according to a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 3 is a sectional view taken along line III-III of FIG. The opening structure of the airbag door according to the embodiment is different from the conventional structure shown in FIGS. 10 to 12 in that the central cleave section 15 and the outer rim cleave section formed on the panel base 11 side of the instrument panel 10. Part 16
The door panel portions 13 and 14 formed by this are not changed from the conventional one, and are obtained by partially improving the form of the metal reinforcing member 25. In addition, each cleavage part 15,16
Is, for example, an airbag door 12 on the back surface of the panel base material 11.
By forming grooves along the center line and the outer edge line of each of the door panel portions 13 and 14 in the above, the thickness is appropriately reduced as compared with other portions to facilitate breakage.

(Metal Reinforcement Member) The metal reinforcement member 25 in this embodiment is a double-opening airbag door composed of two door panel portions 13 and 14 formed by breaking the respective to-be-cleaved portions 15 and 16. As shown in FIG. 4, based on the premise of FIG. 12, a rectangular frame-shaped fixing bracket 26 fixed to the panel base material 11 so as to surround the scheduled outer edge cleavage portion 16, and an opening of the fixing bracket 26. Movable brackets 27, 27 are provided on the inside to face each other. The fixing bracket 26 is the same as that of the conventional embodiment shown in FIG. 11, and is formed integrally with the rectangular cylindrical body 28 for locking and holding the airbag device 20. And a frame-shaped engaging plate portion 29 that is tightly caulked to the back side of the panel base material 11. An inflator 22 of the airbag device 20 is aligned with the cylindrical body 28, and a locking hole 34 for locking and holding the airbag device 20 is formed in a wall facing the inflator 22. Are established. On the other hand, a plurality of slit-shaped engaging holes 35 are formed in the engaging plate portion 29 to allow the insertion of the ribs 17 protruding toward the panel substrate 11 side.

The respective movable brackets 27, 27
Each door panel 1 constituting the airbag door 12
3 and 14 are fixed support panels 3 which are welded or screwed to the cylindrical body 28 of the fixed bracket 26.
And four panel members 3 joined to the fixed support panel 30 by hinge portions (connection members) 32 described later.
1a. Each of the panel members 31a is a plate member having the same size and a substantially square shape, and assuming the door panel portions 13 and 14 having a horizontally long rectangular shape, the longitudinal direction of the door panel portions 13 and 14, that is, the door panel portions 13 and 14 are connected in series along the outer edge line at the time of opening. Each of the panel members 31a is connected to the adjacent panel member 31.
The movable reinforcing panel 31 is formed as a single member as a whole by connecting the corner portions on the center line side between the end edges in FIG. . In addition, each panel member 31a has
A plurality of engaging holes 37 are formed on the back side of the corresponding door panel portions 13 and 14 to allow insertion of the ribs 18 formed to project therefrom. The fixed support panel 30 has a locking hole 36 that is aligned with the locking hole 34 formed in the tubular body 28 of the fixed bracket 26.

(Hinges) Each of the hinges 32 for connecting the panel member 31a and the fixed support panel 30 successively.
As shown in FIGS. 2 and 7A, the fixing bracket 26 has a belt-like shape having a semi-circular slack portion 32a protruding inside the cylindrical body portion 28 of the fixing bracket 26. Is provided so as to be close to the inner wall surface of the cylindrical body portion 28. Therefore, when the airbag 21 which is inflated by the operation of the airbag device 20 presses the respective panel members 31a from the inside, FIGS.
As shown in (b), the slack portion 32a is stretched and deformed in a straight line state, thereby allowing breakage in the outer edge cleavage scheduled portion 16 and allowing the door panel portions 13 and 14 to be deformed linearly from the arc shape. It has a structure that allows it to float upward. However, when the slack portions 32a of the respective hinge portions 32 are completely expanded and deformed by the pressing force of the airbag 21, the end portions 13a and 14a of the door panel portions 13 and 14 are, as shown in FIG. In order to avoid strong interference with the general part of the panel base material 11, the door panel parts 13 and 14 allow the door panel parts 13 and 14 to protrude from the outer surface of the panel base material 11 by the thickness of the door panel parts 13 and 14. 7
As shown in (d), the airbag 21 is positioned so as not to prevent the airbag 21 from fully deploying to the occupant compartment 45 side, and the panel substrate 1
The door panel 13,
When the door 14 is displaced, the length of the door panel 13 and 14 is set to such a length as to completely expand and restrict the further opening displacement of the door panel portions 13 and 14.

The hinge portion 32 extends substantially vertically in the figure along the cylindrical portion 28 of the fixed bracket 26, and its upper end is located at the uppermost edge of the cylindrical portion 28. Therefore, the panel member 31a of the movable reinforcing panel 31 fixed to each of the door panel sections 13 and 14 is connected to the outer edge line side end 13 of the corresponding door panel section 13 and 14.
a, 14a. Moreover, the hinge part 32
Since the slack portion 32a of FIG. 7B is curved in a semi-arc shape inside the cylindrical body portion 28, in the process from the floating state of FIG. 7B to the open completion state of FIG. As shown in ()), the slack portion 32a is temporarily separated from the inner wall surface of the cylindrical body portion 28 and is appropriately displaced inward, and in this state, the door panel portions 13 and 14 are opened and displaced. Therefore,
Even if the slack portion 32a of the hinge portion 32 is set to a length that satisfies the above-described condition, interference between the end portions 13a and 14a of the door panel portions 13 and 14 and the panel base material 11 is preferably avoided. I have.

The hinge portions 32 do not guarantee a plurality of swinging displacements of the movable reinforcing panel 31 with respect to the fixed support panel 30. When the airbag device 20 is actuated, the hinge portions 32 are pressed by the airbag 21. This allows the movable reinforcing panel 31 to be opened and displaced only once. Further, each hinge portion 32 is designed so that, when at least a pressing force required for breaking the outer edge cleavage scheduled portion 16 is applied to the corresponding panel member 31a, the hinge portion 32 does not become resistant to the breaking of the outer edge cleavage scheduled portion 16. Is set. In addition, even when the door panels 13 and 14 are completely extended when they are opened, the door panels 13 and 14 have such strength that they do not tear.

As described above, the movable reinforcing panel 31 in the form in which the four panel members 31a connected in the connecting portion 33 are attached to the fixed bracket 26 via the hinge portion 32.
In the center line side connected by the connecting portion 33, individual deformation of each panel member 31a is regulated, and the hinge portion 32
Each panel member 31a is provided on the outer edge line side where
Are allowed to be individually deformed. In each of the door panel portions 13 and 14 of the airbag door 12 to which the movable reinforcing panel 31 is crimped, the center line side (near the center to-be-cleaved portion 15) is hardly deformed, and the outer edge line side (the outer-edge crack). The portion near the scheduled portion 16) is easily deformed partially. Therefore, for example, when the magnitude of the pressing force of the airbag 21 applied to the movable reinforcing panel 31 is partially different, each of the panel members 31a is individually displaced so as to correspond to this, so that the door panel part is displaced. Partial deformation of 13, 14 is allowed.

[0020]

Next, the operation of the air bag door opening structure using the metal reinforcing member constructed as described above will be described.

(Fixing to Panel Base Material) The Metal Reinforcing Member 2
5 accommodates the movable brackets 27, 27 in which the respective movable reinforcing panels 31, 31 are opposed to each other inside the cylindrical body portion 28 of the fixed bracket 26, and attaches the respective fixed support panels 30, 30 to the cylindrical body 28. It is constituted by welding or screwing the inside of the portion 28. The metal reinforcing member 25 configured as described above is provided on each of the ribs 1 protruding around the back side of the airbag door 12 in the panel substrate 11.
7 and 18 are inserted through the attachment holes 35 and 37, and the heads of the respective ribs 17 and 18 are swaged to thereby obtain the panel base material 1.
1 (FIGS. 2 and 3). At this time, the fastening plate portion 29 of the fixed bracket 26 is fixed along the outer periphery of the airbag door 12 (the portion 16 to be cleaved at the outer edge), and each panel member 31a of one movable bracket 27 is attached to the airbag door 12. The panel member 31a of the other movable bracket 27 is fixed to the rear surface of the other door panel portion 14 of the airbag door 12. When the instrument panel 10 with the metal reinforcing member 25 is mounted on a vehicle body,
For example, the inflator 22 of the airbag device 20 fixed to the reinforce bar 46 is aligned with the cylindrical portion 28 of the fixing bracket 26, and is locked using the locking holes 34, 36.

(Operation of Airbag Device) When the airbag device 20 is operated on the premise that the metal reinforcing member 25 is mounted, the airbag 21 starts to inflate in a shape in which the center of the upper surface protrudes. Therefore, the upper surface of the airbag 21 is formed of two panel members 31a located particularly inward among the four panel members 31a of each movable reinforcing panel 31.
a comes into contact first. Therefore, these inner panel members 31a are pressed upward by the airbag 21 (FIGS. 5A and 8A).

(Breakage of Expected Edge Cleavage) In each of the inner panel members 31a to which a required pressing force is applied, as described above, the panel member whose central cleave scheduled portion 15 is located outside by the continuous portion 33 is provided. Although it is hardly deformed because it is connected to 31a, the hinge portion 32 is easily deformed, so that the hinge portion 32 is displaced upward. As a result, in the door panel portions 13 and 14, the vicinity of the center on the outer edge line side corresponding to the hinge portion 32 side of the inner panel member 31a is pushed up, and this portion is deformed outward, and finally, the vicinity of this center , A partial break is caused near the center of the long side portion of the scheduled outer edge cleavage 16. Thereby, the hinge portion 32 corresponding to the inner panel member 31a is formed.
The outer panel cleavage portion 16 is broken and the door panel portion 13,
When the outer edge line side of 14 is displaced upward, the slack portion 32a is extended and deformed.

After a partial break occurs near the center of the long side portion of the outer edge cleavage scheduled portion 16, the pressing force due to the inflation of the airbag 21 increases, and the panel member 31 a located outside is reduced. Since the hinge portion 32 is also displaced upward sequentially, the fracture of the outer edge cleavage scheduled portion 16 proceeds to the left and right sides of the long side portion, and subsequently wraps around the short side portion, and finally proceeds. Progresses all at once to the entire breakage of the portion 16 to be cleaved at the outer edge (FIG. 5 (b) and FIG. 8 (b)).
It is to be noted that the outer edge cleavage scheduled portion 16 is pressed by the airbag 21.
At the time when the breaking of the door panel is completed, all the hinge portions 32 are stretched and deformed, so that the entire door panel portions 13 and 14 float up from the panel base material 11 by a required amount.
(FIG. 6 (a)), the fracture of the central cleavable portion 15 has not yet started.

(Breakage of the scheduled center cleave part) Peripheral cleave scheduled part 1
When the rupture of No. 6 is completed, the process proceeds to the rupture of the central cleavage scheduled portion 15. Each of the panel members 31a is connected to each other by the connecting portion 33 and is hardly deformed individually. However, since the airbag 21 is inflated in a state where the center of the upper surface is protruded, the respective panel members 31a on the inner side are attached to the respective panel members 31a. Has already been given a large pressing force. Therefore, each door panel part 1
In the sections 3 and 14, the portion near the center on the side of the center line is deformed most outwardly, and finally, a partial fracture is first caused near the center of the central cleavage scheduled portion 15 closest to the deformed portion. . (FIG. 8 (c)). And the central cleavage scheduled part 1
When a partial break is formed in the vicinity of the center in 5, the entire break of the central cleavage scheduled portion 15 progresses at a stretch as the pressing force increases due to the inflation of the airbag 21.

(Opening Displacement of Door Panel) In this way, first, a break occurs near the center of the long side of the scheduled outer edge cleavage 16, which is caused by the entire long side and the short side of the scheduled outer edge cleavage 16. When the rupture is completed by proceeding all at once and then near the center of the central cleavable scheduled portion 15, and the rupture is completed by proceeding all at once at the central cleavable scheduled portion 15, the airbag door 12 with respect to the panel base material 11 is closed. The opening displacement of each of the door panel portions 13 and 14 is allowed. As a result, the door panels 13 and 14 open at a stretch to the passenger compartment 45 while being pressed by the inflating airbag 21 (FIGS. 6 (b) and 8 (d)). At this time, in each hinge part 32, as described above and as shown in FIG.
8 and is displaced inward as appropriate, and in this state, the opening displacement of the door panel portions 13 and 14 proceeds, so that the end portions 13a and 1 of the door panel portions 13 and 14 respectively.
Interference between 4a and the panel substrate 11 is preferably avoided, and the opening displacement of the door panel portions 13 and 14 is smoothly performed.

(Restriction on Opening of Door Panel) The above-mentioned door panels 13 and 14 are attached to the passenger compartment 45 of the airbag 21.
When the opening is displaced to a required angle which does not hinder the entire expansion of the door panel 13, the slack portions 32 a of the respective hinge portions 32 are completely extended, and as shown in FIG. , 14 ends 13a, 14a
Comes into contact with the panel base material 11, and further opening displacement is restricted. Thereby, each door panel unit 1
3, 14 are prevented from colliding with the outer surface of the panel base material 11. When the door panels 13 and 14 are displaced to the open position, the entire deployment of the airbag 21 into the passenger compartment 45 is allowed (FIG. 8E).

As described above, the respective door panel sections 13, 14
Are displaced after being appropriately floated by the hinge portion 32, and the ends 13a, 14
a does not strongly interfere with the panel base material 11, so that the ribs 18 to which the door panel portions 13 and 14 and the movable reinforcing panel 31 fixed thereto are crimped are not broken, whereby the door panel portions 13 and 14 are not broken. And the movable reinforcing panel 31 may be separated, or the door panel portions 13 and 14 may be separated.
In addition, it is possible to preferably prevent the end portions 13a and 14a from being damaged. Further, since each of the door panel portions 13 and 14 does not collide with the panel base material 11 by the extended hinge portion 32, damage to the door panel portions 13 and 14 and the panel base material 11 due to the impact at the time of the collision can be avoided. .

In the airbag door opening structure according to the embodiment, the movable reinforcing panel 3 of the metal reinforcing member 25 is provided.
By configuring the first and the first panel members 31 with the four panel members 31a, when the pressing force of the airbag 21 is applied, the individual panel members 31a are deformed in accordance with the strength of the pressing force, Partial deformation of the airbag door 12 is allowed. As a result, in the initial stage of pressing due to the inflation of the airbag 21, a partial break is caused near the center of the long side portion of the scheduled outer edge cleavage 16, and this is used as a trigger to cause the entirety of the scheduled outer edge cleavage 16. The rupture proceeds at a stretch, and then a partial rupture near the center of the central cleavable portion 15 is caused, and the entire rupture of the central cleavable portion 15 proceeds at a stretch by using this as a trigger. . Therefore, the opening displacement can be performed at a timing earlier than that of the conventional airbag door 12 shown in FIG. 11 and with a small pressing force. Moreover, the airbag door 12
Since the opening displacement of the airbag is made smooth, the airbag 21
The airbag door 12 is preferably prevented from being damaged, and the airbag door 12 is not damaged.

FIG. 9 shows that the airbag 21 is connected to each of the panel members 3.
Another embodiment in which the outer edge line side of the panel member 31a is moved to the door panel sections 13 and 14 when the panel member 31a is pressed, so that the door panel sections 13 and 14 float and can be opened to the outside. FIG. 2 is a perspective view and a main part sectional view showing In the opening structure of the airbag door according to the embodiment, when the panel member 31a (the movable reinforcing panel 31) receives the pressing force of the pressing force of the airbag 21, the slack portion 32a of the semicircular hinge portion 32 is turned off. The configuration in which the door panels 13 and 14 are allowed to float by extending and deforming linearly. On the other hand, each panel member 31a of another embodiment is
As shown in FIG. 9A, the connecting member 32 is formed as a band-shaped flat plate, and the connecting member 32 is bolted (bar-shaped member) 4.
At 0, it is movably assembled to the cylindrical body 28 of the fixed bracket 26. The connecting member 32 includes a bolt 4
And a guide groove 41b that is narrower and narrower than the diameter of the shaft 40a.
An elongated slit 41 is provided along the sliding movement direction of the connecting member 32. Then, the panel member 31a is attached to the fixing bracket 28 by always inserting the bolt 40 into the locking opening 41a,
When the pressing force of the airbag 21 is applied to the panel member 31a, as shown in FIG. 9B, the connecting member 32 is moved upward until the other end of the guide groove 41b contacts the bolt 40. Sliding movement is allowed, so that the panel member 31a can float.

The length of the slit 41 for determining the sliding amount of the connecting member 32 is set at a position which does not prevent the airbag 21 from fully expanding toward the passenger compartment 45 and collides with the surface of the panel substrate 11. When the door panels 13 and 14 are displaced to the position where they do not
The dimensions are set so that further opening displacements of 3, 14 are restricted (FIG. 9 (c)). In the connecting member 32 of this modification, the portion extending upward from the bolt 40 is separated from the inner wall surface of the cylindrical body 28 of the fixed bracket 26 and can be appropriately displaced inward. Therefore, when the door panels 13 and 14 are opened and displaced, the ends 13a and 14a of the door panels 13 and 14 and the panel base 1 are displaced.
1 is avoided.

In the above embodiment, each movable bracket 2
7 movable reinforcing panels 31 are a total of four panel members 31
a, but the number of the panel members 31a is not limited to this, and three or less or five or more on the assumption that the shapes and sizes of the door panel portions 13 and 14 are provided. It may be.

However, when the movable reinforcing panel 31 is composed of a plurality of panel members 31a, the respective panel members 31
a are desirably connected to each other by the connecting portion 33. If each panel member 31a is completely separated without providing the continuous portion 33, there is a concern that the door panels 13, 14 may not be prevented from being damaged by the impact when pressed by the airbag 21. Because it is Moreover, if it is assumed that the continuation of the outer edge cleavage scheduled portion 16 proceeds first, the continuous portion 33 is desirably provided on the center line side between the panel members 31a as much as possible.

The vehicle interior member having the airbag door includes, in addition to the instrument panel 10, a door panel portion and a pillar garnish. The open structure of the airbag door according to the present invention includes these vehicle interior members. The present invention can be suitably applied to the airbag door provided in the above.

[0035]

As described above, according to the airbag door opening structure according to the present invention, each door panel portion to which the movable reinforcing panel is fixed is positioned so as not to block the entire deployment of the airbag, and When the opening is displaced to a position where it does not collide with the surface, the connecting member that connects the movable reinforcing member and the bracket is completely extended, and further restricts further opening displacement of the door panel portion. Accordingly, since each door panel does not collide with the panel base material, there is an advantageous effect that damage to the door panel part and the base material due to the impact at the time of the collision can be preferably avoided.

Further, according to the airbag door opening structure of another invention, each door panel portion to which the movable reinforcing panel is fixed does not impede the entire surface of the airbag and does not collide with the surface of the base material. When the opening is displaced to the position, the sliding displacement of the connecting member that connects the movable reinforcing member and the bracket is stopped, and further opening displacement of the door panel portion is restricted. Accordingly, since each door panel does not collide with the panel base material, there is an advantageous effect that damage to the door panel part and the base material due to the impact at the time of the collision can be preferably avoided.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a metal reinforcing member used for an open structure of an airbag door according to a preferred embodiment of the present invention mounted on a rear surface of a door panel.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an exploded perspective view of a fixed bracket and a movable bracket that constitute the metal reinforcing member of FIG. 1;

FIG. 5A is a front cross-sectional view illustrating a state before a break in which a door panel portion is deformed outward by pressing an inflating airbag,
(b) is a front sectional view showing a state in which a door panel portion has begun to open when a portion to be cleaved at the outer edge is broken by the pressure of the airbag which is further inflated.

FIG. 6A is a side cross-sectional view of a state in which the hinge portion expands and deforms due to the pressure of the inflating airbag, so that the portion to be cleaved at the outer edge is broken and the door panel portion appropriately floats, and FIG.
FIG. 10 is a side sectional view showing a state in which a portion to be cleaved at the center is broken by further pressing of the airbag, and each door panel portion starts opening around the connecting member.

FIGS. 7A and 7B are explanatory views showing the opening structure of the airbag door according to the present embodiment over time, wherein FIG. 7A shows a state before breaking of a portion to be cleaved, and FIG. Along with this, the hinge part is extended and deformed, and the door panel part is shown floating,
(c) shows a state in which the door panel is open with the hinge deformed to the inside of the bracket, and (d) shows a state in which the opening displacement of the door panel is restricted by the fully extended hinge. Is shown.

FIGS. 8A and 8B are explanatory diagrams showing the opening displacement of the airbag door over time, wherein FIG. 8A is a perspective view showing a state in which the pressing of the airbag is started and the airbag door is being deformed, and FIG. Perspective view of a state in which an outer edge scheduled to be cleaved is broken and the airbag door is appropriately floated, (c) is a perspective view of a state in which a break has begun to be formed in a center to be cleaved, and (d) is a break in a scheduled to be cleaved. Is completed, and a perspective view of a state in which the airbag door starts opening displacement,
(d) is a perspective view of the state where the opening of the airbag door was completed.

FIG. 9A is a perspective view showing another example of the connecting member.
(b) is a side sectional view of a state in which the airbag door to which the movable reinforcing panel having the connecting member shown in (a) is fixed is appropriately floated by breaking at a portion where the outer edge is to be cleaved, and (c) of the door panel portion. It is a sectional side view in the state where opening displacement was regulated.

FIG. 10 is a side sectional view of an instrument panel provided with an airbag door.

FIG. 11 is a perspective view showing a door panel portion formed on a panel substrate of the instrument panel and a metal reinforcing member mounted on the back side thereof, with the panel substrate partially cut away.

12A and 12B are explanatory views showing a conventional airbag door opening structure in a cross-sectional state, in which FIG. 12A shows a state before the airbag door is opened, and FIG. 12B shows a state when the door panel portion is opened. This shows the inconvenience that the end of the door panel on the outer edge line side interferes with the base material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Instrument panel (vehicle interior member) 11 Panel base material (base material) 12 Airbag doors 13, 14 Door panel part 13a, 14a End part 15 Center tear scheduled part 16 Outer edge scheduled tear part 20 Airbag device 21 Airbag 26 Fixed Bracket (bracket) 28 Cylindrical body 31 Movable reinforcing panel 32 Hinge (connecting member) 32a Loose part 40 Bolt (bar-shaped member) 41 Slit 45 Passenger room

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomokazu Kurume 3-1-136 Imaikecho, Anjo-shi, Aichi Pref. Innoac Corporation Anjo Office (72) Inventor Akihiko Murakami 3-1-1 Imaikecho, Anjo-shi, Aichi Prefecture No. 36 Inoac Corporation Anjo Office F-term (reference) 3D054 AA03 AA14 BB09 BB16 FF03 FF16

Claims (3)

[Claims] 1. Two door panel portions (13, 14) integrally formed on a base material (11) of a vehicle interior member (10) and opened to both sides when an airbag device (20) is activated, It is attached to a bracket (26) disposed on the back side of the base material (11) via a connecting member (32) having a slack portion (32a) so as to be able to open both sides, and is compatible with the back side of the door panel portion (13, 14). And two movable reinforcing panels (31, 31) fixed to the airbag device (2).
When the airbag (21) which has started inflating by the operation of (0) presses the movable reinforcing panel (31, 31) from the inside, first the slack portion (32a) of the connecting member (32) expands and deforms. The to-be-cleaved part (16) formed along the outer edge line of the door panel part (13, 14) breaks to float the door panel part (13, 14) from the base material (11), and then the door panel part (13,
The scheduled tearing portion (15) formed along the adjacent center line of (14) is broken, and the door panel portion (13, 14) is removed from the passenger compartment.
(45) side, and the airbag (21)
In the airbag door (12) configured to be fully deployed to the passenger compartment (45), the respective connecting members (32) are formed in a semicircular shape in which the slack portion (32a) can be linearly extended and deformed. In addition to forming the two ends of the arc of the slack portion (32a), the cylindrical portion (2
8), and the length of the slack portion (32a) when extended is a position where the door panel portion (13, 14) does not prevent the entire deployment of the airbag (21). And it is set to a size that allows open displacement to a position where it does not collide with the surface of the base material (11), and the airbag (21) presses the movable reinforcing panel (31, 31) from the inside, and When the door panel portions (13, 14) are opened, the opening displacement of the door panel portions (13, 14) is stopped when the slack portion (32a) of the connecting member (32) is completely extended, whereby each of the door panel portions (13, 14) is stopped. The door panel part (13, 14) is
An airbag door opening structure characterized in that it is configured to prevent collision with the surface of (11). 2. The connecting member (32) is provided with the slack portion (32a).
Is stretched from a semicircular arc to a straight line.
The side of the (32a) connected to the movable reinforcing panel (31) is displaced inward of the cylindrical body (28), whereby the door panel
The airbag according to claim 1, wherein the door panel (13, 14) is opened and displaced at a position where the end (13a, 14a) of the (13, 14) is retracted from the base material (11). Open door structure. 3. Two door panel portions (13, 14) integrally formed on a base material (11) of a vehicle interior member (10) and opened to both sides when an airbag device (20) is activated, It is attached to the bracket (26) arranged on the back side of the base material (11) via a connecting member (32) slidably arranged so as to be able to open both sides, and is compatible with the back side of the door panel part (13, 14). The airbag (21), which is inflated by the operation of the airbag device (20), comprises two movable reinforcing panels (31, 31) fixed to the movable reinforcing panel (31, 31). When pressed from
First, when the connecting member (32) is slid, the to-be-cleaved portion (16) formed along the outer edge line of the door panel portion (13, 14) is broken, and the door panel portion (13, 14) is moved to the base. From the material (11), then the door panel part (13, 14)
The to-be-cleaved part (15) formed along the adjacent center line of the door panel part (13, 14) breaks and the passenger compartment (45)
The airbag door is displaced to the side so that the airbag (21) is fully deployed to the passenger compartment (45).
In (12), each of the connecting members (32) is assembled to the bracket (26) by inserting a rod-shaped member (40) into a slot-like elongated hole (41) extending along the sliding direction. Attached, allowing a sliding movement from one end of the slit (41) to the other end, wherein the length of the slit (41) is equal to the length of the door panel portion (13, 14).
However, the connecting member (32) can be moved to a position where the entire deployment of the airbag (21) is not prevented, and to a position that allows an open displacement to a position where the airbag (21) does not collide with the surface of the substrate (11). When the airbag (21) presses the movable reinforcing panels (31, 31) from the inside to open the respective door panel portions (13, 14), the connecting members (32) slide. And the slit (4
When the other end of (1) abuts on the rod-shaped member (40), the opening displacement of the door panel portions (13, 14) is stopped, and each door panel portion (13, 14) is placed on the surface of the base material (11). A structure for opening an airbag door, characterized in that it is configured to prevent collision with the airbag door.