JP3731473B2 - Arrangement structure of head protection airbag device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure for a head protection airbag device, and more particularly to an arrangement structure for a head protection airbag device in which a deployment auxiliary member having a guide wall extending toward an upper end portion of a pillar garnish is set on a roof side rail. About.
[0002]
[Prior art]
An example of an arrangement structure of a head protection airbag device in which a deployment auxiliary member having a guide wall extending toward the upper end of the pillar garnish is set on the roof side rail is proposed in Japanese Patent Laid-Open No. 11-91490. Yes.
[0003]
In such an arrangement structure of the head protection airbag device, a jump stand as a metal deployment assisting member is provided below the folded airbag bag body, and the jump stand is a B pillar. It is disposed across the B pillar from the vicinity of the front side. Moreover, the jump stand is comprised with the board | plate material bent by L-shaped cross section, and has the wall part extended toward the upper end part A of B pillar garnish. Therefore, when the airbag bag body is deployed, the airbag bag body is inflated in the vehicle interior side along the wall portion of the jump base, and is not in contact with or caught by the upper end portion of the B pillar garnish.
[0004]
[Problems to be solved by the invention]
However, when the vehicle collides with the pole, etc., the B pillar garnish tends to move upward along with the deformation of the body. Therefore, as described above, the top side of the B pillar garnish is moved to the roof side rail side. In a configuration in which a jump base having a guide wall extending toward the top is set, there is a possibility that the upper end of the B pillar garnish moves above the guide wall of the jump base and contacts or gets caught by a part of the airbag bag body in the middle of deployment. is there.
[0005]
In consideration of the above facts, the present invention can suppress the upper end portion of the B pillar garnish from coming into contact with or being caught by a part of the airbag bag body in the middle of deployment even when the B pillar garnish moves upward. It is an object to obtain an arrangement structure of a head protection airbag device.
[0006]
[Means for Solving the Problems]
The present invention according to claim 1 is an arrangement structure of a head protection airbag device in which a deployment auxiliary member having a guide wall extending toward an upper end portion of a pillar garnish is set on a roof side rail.
The position in the vertical direction of the guide wall of the development assisting member is folded and stored so as to be higher than the position where the upward movement amount at the time of the side collision of the inflator side corner of the upper end of the pillar garnish is expected. It is characterized in that it is set higher by a predetermined amount than the vertical position of the general part supported by the plurality of attachment parts in the airbag body.
[0007]
Therefore, the vertical position of the guide wall of the deployment assisting member is folded and stored so that it is higher than the position where the upward movement amount at the side of the inflator side corner of the upper end of the pillar garnish is expected. By setting a predetermined amount higher than the vertical position of the general portion supported by the plurality of mounting portions in the bag bag body, the B pillar garnish is accompanied by deformation of the body when the vehicle collides with the pole. Even when is moved upward, the inflator side corner of the upper end portion of the B pillar garnish can be prevented from contacting or being caught by a part of the airbag bag body in the middle of deployment.
[0008]
The present invention according to claim 2 is an arrangement structure of a head protection airbag device in which a deployment auxiliary member having a guide wall extending toward the upper end portion of the pillar garnish is set on the roof side rail.
The vertical position of the guide wall of the deployment assisting member is set a predetermined amount higher than the vertical position of the general part supported by a plurality of attachment parts in the folded and stored airbag bag body , An attachment portion to the body side extending upward is formed in the middle portion in the longitudinal direction, and at least one of the front and rear end portions of the guide wall that is close to the inflator is curved upward.
[0009]
Therefore, the vertical position of the guide wall of the deployment assisting member is set a predetermined amount higher than the vertical position of the general part supported by the plurality of attachment parts in the folded and stored airbag body, and the B pillar garnish By setting the position to allow for the amount of movement, even when the B pillar garnish moves upward due to deformation of the body when the vehicle collides with the pole, the upper end of the B pillar garnish is It can suppress contacting or getting caught in a part of airbag bag body. Further, at least one of the front and rear end portions of the guide wall that is close to the inflator is curved upward, and the portion of the airbag bag body disposed on the guide wall, that is, the inflator side at the upper end portion of the B pillar garnish A portion of the airbag bag body facing the corner is set upward. As a result, the airbag bag body tends to expand in order from the side closer to the inflator to the far side, and the airbag bag body tends to be caught on the inflator side corner at the upper end of the B pillar garnish, but this can be suppressed. it can. In addition, since an attachment portion to the body side extending upward is formed in the middle portion in the longitudinal direction of the development assisting member, the attachment portion can be used even when the amount of upward bending of the front and rear end portions of the deployment assisting member is changed. There is no need to change the position of, and versatility is high.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the arrangement structure of the head protecting airbag device according to the present invention will be described with reference to FIGS.
[0011]
In the figure, the arrow FR indicates the vehicle front direction, the arrow UP indicates the vehicle upward direction, and the arrow IN indicates the vehicle width inside direction.
[0012]
As shown in FIG. 4, the head protection airbag device 10 according to the present embodiment includes a sensor 12 for detecting a side collision or a rollover state, an inflator 14 that ejects gas when activated, and an airbag. The bag 16 is configured as a main component. The sensor 12 is disposed, for example, near the lower end of the center pillar (B pillar) 18.
[0013]
The inflator 14 is disposed on a quarter pillar (C pillar) 20, and the inflator 14 is connected to the sensor 12 described above. Therefore, when the sensor 12 detects a side collision or a rollover state, the inflator 14 is activated.
[0014]
The airbag bag body 16 is deployed along the side of the passenger compartment by the gas flowing in from the inflator 14 as shown by a two-dot chain line in FIG. 4 to protect the head of the front seat occupant and the head of the rear seat occupant. It is like that. In addition, a plurality of non-inflatable portions 19 are set in the airbag bag body 16 in the deployed state at intervals in the vehicle front-rear direction. A plurality of inflatable portions 21 are formed by 19.
[0015]
The airbag bag body 16 is folded in a bellows shape and is elongated, and is accommodated across the front pillar (A pillar) garnish, roof head lining, and C pillar garnish. It is disposed in the vicinity of the lower end 22 </ b> A of the inclined portion of the A pillar 22. Moreover, the general part (intermediate part) 16B in the airbag bag body 16 is disposed along the A pillar 22, the roof side rail 28, and the C pillar 20, and the gas ejected from the inflator 14 flows into the rear end part 16C. In this manner, the inflator 14 is disposed at the position where the inflator 14 is disposed. A plurality of attachment portions 30 having attachment holes (not shown) are formed on the upper edge portion of the airbag bag body 16 so as to protrude.
[0016]
A roof head lining 26 shown in FIG. 2 is disposed on the inner side of the inner panel of the roof side rail 28 described above. When the airbag bag body is deployed, the roof head lining 26 has an outer end in the vehicle width direction. The front end 26B of the portion 26A and the upper end portion 49A of the B pillar garnish 49 are disengaged , and the outer end portion 26A of the roof head lining 26 in the vehicle width direction is pushed out toward the vehicle interior side. Will be deployed in the passenger compartment.
[0017]
As shown in FIG. 1, a substantially central portion in the vehicle body front-rear direction of the intermediate portion 16B of the airbag bag body 16 that is folded into a bellows shape and is elongated is held by a slide 42 as a deployment assisting member. The slide 42 is disposed across the upper end portion 49 </ b> A of the B pillar garnish 49 in the front-rear direction. The slide 42 is set to a strength that does not easily deform due to the deployment force of the airbag bag body.
[0018]
As shown in FIG. 2, the slide 42 includes a guide wall 42 </ b> A that extends substantially perpendicularly from the mounting surface 34 </ b> A of the roof side inner panel 34 toward the vehicle interior side, and a lower end (the upper end of the B pillar garnish 49). A vertical wall portion 42B formed toward the portion 49A), and a bent portion 42C is formed at the outer end in the vehicle width direction of the guide wall 42A.
[0019]
As shown in FIG. 1, a mounting flange portion 42 </ b> D that protrudes upward is formed at the center in the front-rear direction of the bent portion 42 </ b> C of the slide 42.
[0020]
As shown in FIG. 2, a mounting hole 43 is formed in the center of the mounting flange portion 42D, and the mounting flange portion 42D is fixed to the bolt 39 inserted into the mounting hole 43 and the roof side inner panel 34. The nut 37 is attached to the roof side inner panel 34.
[0021]
As shown in FIG. 3, in the present embodiment, the front and rear end portions 42E and 42F of the guide wall 42A of the slide 42 are curved upward, and the vertical positions of these are the folded airbag bag 16 that is stored. A predetermined amount H is set higher than the vertical position of the general portion 16B.
[0022]
Accordingly, the rear end portion 42F of the guide wall 42A in the slide 42 is curved upward, and the portion 16D of the airbag bag body 16 facing the inflator side corner portion (rear side corner portion) 49B in the upper end portion 49A of the B pillar garnish 49. Is set upward.
[0023]
The other parts of the roof side inner panel 34 and the inner panel of the A pillar 22 are fastened and fixed by weld nuts and bolts with the attachment portion 30 of the airbag bag body 16 sandwiched between two reinforcing plates. Has been. The airbag bag body 16 is held in a folded state by a bag as a binding member that can be broken when the airbag bag body is deployed, or a binding tape, and the folded airbag bag body 16 is a guide wall of the slide 42. It is in close contact with 42A.
[0024]
Next, the operation of this embodiment will be described.
[0025]
In the present embodiment, when the airbag bag body 16 is deployed, the airbag bag body 16 is guided by the guide wall 42A of the slide 42 set to a strength that does not easily deform due to the deployment force of the airbag bag body 16, and Expands toward the passenger compartment. As a result, the deployment direction of the airbag bag body 16 is stabilized, and the deployed airbag bag body 16 can be prevented from coming into contact with the upper end portion 49A of the B pillar garnish 49. It does not sink into the gap between the upper end portion 49 </ b> A of the pillar garnish 49 and the body and is not caught by the upper end portion 49 </ b> A of the B pillar garnish 49.
[0026]
Further, in the present embodiment, the rear end portion 42F of the guide wall 42A in the slide 42 is curved upward, and the airbag bag is opposed to the inflator side corner portion (rear side corner portion) 49B in the upper end portion 49A of the B pillar garnish 49. The part 16D of the body 16 is set upward. That is, the vertical position of the rear end portion 42F of the guide wall 42A in the slide 42 is set a predetermined amount H higher than the vertical position of the general portion 16B of the airbag body 16 folded and stored, and the B pillar garnish 49 By setting the position in anticipation of the movement amount, the airbag bag body 16 is close to the inflator 14 even when the B pillar garnish 49 moves upward due to deformation of the body such as when the vehicle collides with the pole. When deploying in order from the rear to the front, the airbag bag body 16 can be prevented from being caught by the inflator side corner (rear side corner) 49B of the upper end portion 49A of the B pillar garnish 49. For this reason, even when the B pillar garnish 49 moves upward, the airbag bag body 16 can be smoothly deployed, and the B pillar garnish 49 can be prevented from coming off when the airbag bag body is deployed.
[0027]
Further, in the present embodiment, the mounting flange portion 42D protruding upward is formed at the center portion in the front-rear direction of the bent portion 42C of the slide table 42, so that the upper and lower ends 42E and 42F of the guide wall 42A of the slide table 42 are located above. Even when the amount of bending changes, the position of the mounting flange portion 42D does not need to be changed, and versatility is high.
[0028]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the present embodiment, as shown in FIG. 3, the front and rear end portions 42E and 42F of the guide wall 42A of the slide 42 are curved upward, and the airbag bag body 16 is folded and stored in the vertical position. The predetermined amount H is set higher than the vertical position of the general portion 16B, but instead, only the inflator 14 side of the front and rear end portions 42E and 42F of the guide wall 42A of the slide 42 may be curved upward. . Further, as shown in FIG. 5, the guide wall 42 </ b> A in the slide 42 is set by setting the mounting position of the conventional slide 42 in which the guide wall 42 </ b> A in the slide 42 is substantially linear along the front-rear direction. The vertical position of the upper portion 49A of the B pillar garnish 49 is higher than the inflator side corner portion 49B by a predetermined amount H higher than the vertical position of the general portion 16B of the airbag body 16 folded and stored. A set configuration may be used.
[0029]
In the present embodiment, the present invention is applied to the B pillar garnish 49, but the present invention is also applicable to other pillars such as the C pillar 20.
[0030]
Further, in the present embodiment, the present invention is applied to the arrangement structure of the head protection airbag device in which the inflator 14 is arranged on the C pillar 20, but the present invention is applied to other parts such as the A pillar and the B pillar. The present invention can also be applied to the arrangement structure of the head protection airbag device in which the inflator 14 is arranged.
[0031]
【The invention's effect】
According to the first aspect of the present invention, in the arrangement structure of the head protection airbag device in which the deployment assisting member having a guide wall extending toward the upper end portion of the pillar garnish is set on the roof side rail, the upper end of the pillar garnish is provided. The position of the guide wall of the deployment assisting member in the vertical direction of the guide wall of the deployment assisting member is folded and stored so that it is higher than the position where the upward movement amount at the time of the side collision of the inflator side corner of the part is expected. Since it is set a predetermined amount higher than the vertical position of the general part supported by the mounting part, even when the B pillar garnish moves upward, the upper end part of the B pillar garnish is It has the outstanding effect that it can suppress contacting or being caught in a part.
[0032]
According to a second aspect of the present invention, in the arrangement structure of the head protection airbag device in which a deployment assisting member having a guide wall extending toward the upper end of the pillar garnish is set on the roof side rail, The vertical position of the guide wall is set a predetermined amount higher than the vertical position of the general part supported by a plurality of attachment parts in the folded and stored airbag bag body , Since the mounting part on the body side extending upward is formed, and at least the one near the inflator of the front and rear end portions of the guide wall is curved upward, the B pillar garnish can be moved upward even when the B pillar garnish moves upward. The upper end of the garnish can be prevented from contacting or catching a part of the airbag body that is being deployed , and the amount of upward bending can be changed. Even when it is made, it is not necessary to change the position of the mounting portion, and it has an excellent effect of high versatility.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an arrangement structure of a head protection airbag device according to an embodiment of the present invention, as viewed from the obliquely rearward side of a vehicle.
FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG.
FIG. 3 is an enlarged side view showing a part of the arrangement structure of the head protecting airbag device according to the embodiment of the present invention as seen from the vehicle inner side.
FIG. 4 is a side view showing the arrangement structure of the head protecting airbag device according to the embodiment of the present invention as seen from the vehicle inner side.
FIG. 5 is an enlarged side view showing a part of the arrangement structure of the head protection airbag device according to another embodiment of the present invention as seen from the inside of the vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Head protection airbag apparatus 14 Inflator 16 Airbag bag body 16B General part of airbag bag body 18 Center pillar (B pillar)
20 Quarter pillar (C pillar)
22 Front pillar (A pillar)
28 roof side rail 34 roof side member inner panel 42 slide (deployment auxiliary member)
42A Slider guide wall 42B Slider vertical wall part 42C Slider bent part 42D Slider mounting flange part 42E Guide wall front end part 42F Guide wall rear end part 49 B pillar garnish 49A B pillar garnish upper end part 49B B pillar garnish Inflator side corner at the top of

Claims (2)

In the arrangement structure of the head protection airbag device in which a deployment auxiliary member having a guide wall extending toward the upper end of the pillar garnish is set on the roof side rail,
The air that is folded and stored in the vertical position of the guide wall of the development assisting member so as to be higher than the position that allows for the upward movement amount at the time of a side collision of the inflator side corner of the pillar garnish. An arrangement structure of a head protection airbag device, wherein the arrangement structure is set higher by a predetermined amount than the vertical position of the general portion supported by a plurality of attachment portions in the bag bag body. In the arrangement structure of the head protection airbag device in which a deployment auxiliary member having a guide wall extending toward the upper end of the pillar garnish is set on the roof side rail,
The vertical position of the guide wall of the deployment assisting member is set a predetermined amount higher than the vertical position of the general part supported by a plurality of attachment parts in the folded and stored airbag bag body , The head-protecting air is characterized in that a body-side attachment portion extending upward is formed in the longitudinal middle portion, and at least one of the front and rear end portions of the guide wall is curved upward. Arrangement structure of bag device.

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