JP2002012124A - Air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent damage of a bag body of an air bag device without causing remarkable lowering of productivity and remarkable increase of cost. SOLUTION: With the folded air bag body 16 mounted on a car body, a projected non-inflation part 40 independently projected between the fitting parts of the upper edge parts in the air bag body 16 is interposed between the folded part 16E of the air bag body 16 and a fitting flange 44A of an assist grip mounting bracket 42 and its spot hitting point P in a roof side rail 28. Accordingly, the main body 16E of the air bag body 16 is prevented from directly coming into contact with the fitting flange 44A and its spot hitting point P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device, and more particularly to an airbag device mounted on a vehicle such as an automobile for protecting the head of an occupant.

[0002]

2. Description of the Related Art Conventionally, an example of an airbag device mounted on a vehicle such as an automobile for protecting a head of an occupant is disclosed in Japanese Patent Application Laid-Open No. 2000-079864.

In this prior art, it is an object of the present invention to easily and quickly fasten an airbag bag, a curtain, and the like for protecting an occupant's head to a vehicle body. That is, the head protection airbag bag is folded into a rod shape to be a folded body,
This folded body is restrained by a sheet as a rigidity imparting member. Also, this sheet is made of paper, synthetic resin impregnated paper or synthetic resin sheet, the protruding pieces of this sheet are overlapped on the ears, and the wound part is wound around the folded body with the bolt insertion holes aligned. The ends of the winding portions are bonded to each other with an adhesive tape or an adhesive. Thereafter, the operator or the work robot grasps the portion on which the sheet is wound, aligns the bolt with the female screw hole of the roof side rail, and passes the bolt through the bolt insertion hole and screw into the female screw hole.

[0004]

However, in this prior art, the folded airbag bag is disposed along the side surface of the body such as a roof side rail and a front pillar. It is also conceivable that the inflated portion of the airbag body may be damaged by burrs such as interior part mounting brackets or spot welding spots mounted on the side surfaces. For this reason, a protective tape for protecting the inflated portion of the airbag bag is wrapped around the airbag bag, or a protective tape is attached to a burr occurrence portion so that burrs on the inner side surface of the body of the airbag are applied to the inflated portion of the airbag bag. Avoid direct contact. However, since the protective tape is wrapped around the airbag bag or attached to the burrs, the number of assembling steps is increased, the productivity is greatly reduced, and the cost is greatly increased.

[0005] In view of the above facts, the present invention provides an airbag device that can surely prevent damage to an airbag bag without significantly lowering productivity and significantly increasing cost. Is the purpose.

[0006]

According to a first aspect of the present invention, there is provided an airbag apparatus in which a folded airbag bag is fixed to a fixed portion by a mounting portion. A protruding non-inflating portion interposed between the inflating portion and the inflating portion is integrally formed on an outer peripheral portion of the airbag body.

Accordingly, the fixing portion to which the airbag bag is fixed is in contact with the protruding non-inflatable portion of the airbag, but not in direct contact with the inflatable portion of the airbag. As a result, the inflated portion of the airbag body is not damaged by burrs or the like of the fixed portion. In addition, since the protruding non-inflated portion can be formed by effectively using the surplus portion of the cloth of the airbag body without using a separate object, there is no significant reduction in productivity and a significant increase in cost. .

According to a second aspect of the present invention, the folded airbag body is formed along a body cabin inner side surface extending from a pillar to a roof side rail at a plurality of mounting portions formed independently and protruding from an upper edge thereof. In the airbag device fixed by the airbag device, a protruding non-inflating portion interposed between an interior component mounting bracket or a welded portion disposed on the inner side surface of the body of the vehicle and an inflating portion of the airbag body is attached to the airbag device. The bag is formed so as to be integrally protruded from an outer peripheral portion of the bag.

Therefore, the interior part mounting bracket or the welded portion provided on the side surface of the interior of the vehicle body comes into contact with the protruding non-inflated portion of the airbag bag, and does not directly come into contact with the inflated portion of the airbag bag. As a result, the inflated portion of the airbag bag is not damaged by the interior product mounting bracket disposed on the side surface of the interior of the body of the vehicle or the burr of the welded portion. In addition, since the protruding non-inflated portion can be formed by effectively using the surplus portion of the cloth of the airbag body without using a separate object, there is no significant reduction in productivity and a significant increase in cost. .

According to a third aspect of the present invention, a folded airbag body is formed along a body vehicle interior side surface extending from a pillar to a roof side rail at a plurality of mounting portions independently formed on an upper edge portion thereof. In the fixed airbag device, the folded airbag body covers the outside surface of the cabin,
The mounting portion of the upper edge of the airbag bag corresponding to the interior product mounting bracket or the welded portion provided on the side surface of the body vehicle interior, wherein It is characterized in that it is formed integrally with and protrudes independently of the mounting portion.

Therefore, the interior part mounting bracket or the welded portion disposed on the inner side surface of the body compartment is disposed between the mounting portions on the upper edge portion of the airbag bag, and the outer side surface of the folded airbag bag is disposed. And not in direct contact with the inflated portion of the airbag body. As a result, the inflated portion of the airbag bag is not damaged by the interior product mounting bracket disposed on the side surface of the interior of the body of the vehicle or the burr of the welded portion. In addition, since the protruding non-inflated portion can be formed by effectively using the surplus portion of the cloth of the airbag body without using a separate object, there is no significant reduction in productivity and a significant increase in cost. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an airbag device according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a vehicle forward direction, an arrow UP indicates a vehicle upward direction, and an arrow IN indicates a vehicle width inside direction.

As shown in FIG. 3, a head protection airbag device 10 according to the present embodiment includes a sensor 12 for detecting a side collision state, a column-shaped inflator 14 for ejecting gas when activated. And an airbag bag body 16 that is deployed along the side of the vehicle cabin. The sensor 12 is disposed near the lower end of the center pillar (B pillar) 18 and detects a side collision state when a side collision load of a predetermined value or more acts on the vehicle body side.

The inflator 14 is disposed near the connection between the front pillar (A-pillar) 20 and the instrument panel 22 and is connected to the sensor 12 described above. Therefore, when the sensor 12 detects the side collision state, the inflator 14 is operated.

In a vertical intermediate portion of the airbag body 16 in a side view, a tension line T connecting a front end fixed point and a rear end fixed point of the airbag body 16 is traversed, and the vertical direction of the airbag body 16 is set in the longitudinal direction. Are formed at predetermined intervals. The non-inflating portions 24 form a plurality of substantially parallel inflating portions 25 crossing the tension line T when the airbag body is deployed, as shown by a two-dot chain line in FIG. , Expansion part 2
5 has a cylindrical cross section when viewed from above and below.

Further, a front end portion 16A of the airbag bag body 16 is provided.
Are arranged at the inflator arrangement position so that gas ejected from the inflator 14 flows in, and the upper end edge of the intermediate portion 16B is arranged along the front pillar 20 and the roof side rail 28 serving as fixed portions. , Rear end 1
The upper edge of 6C is disposed behind the center pillar (B pillar) 18 on the roof side rail 28.

The airbag bag 16 is folded in a bellows shape in a substantially vertical direction to have a long shape, and is then bound by a binding tape 30 at predetermined intervals in the longitudinal direction.
It is housed over a front pillar garnish (not shown) and a roof side rail garnish (not shown).

As shown in FIG. 4, the air bag 16
Is cut in an unnecessary portion (a hatched portion in FIG. 4) 17A of the woven cloth 17 and, at the rear end of a portion 17B of the cloth 17 which becomes the airbag body 16, a woven cloth is formed. A substantially triangular flat cloth 19 that has not been fixed is fixed by sewing or the like.

In this embodiment, when the cloth 17 is cut, a plurality of rectangular tongue-shaped mounting portions 35 are formed at predetermined intervals on the upper edge of the airbag bag body 16.
At substantially the center of these mounting portions 35, mounting holes 36 are formed.

Further, in the present embodiment, when cutting the cloth 17 of the airbag bag, the upper end edge of the airbag bag 16 is separated from the mounting portion 35 adjacent to the mounting portion 35, that is, is separated from the mounting portion 35. , The protruding non-expandable portions 40 and 41 divided by the notch 37 from the mounting portion 35, and as shown in FIG.
The outer side surface 16D of the outer peripheral portion of the folded airbag bag body 16 is covered.

As shown in FIG. 1, the roof side rail 28 includes an outer panel 32 having a hat-shaped cross section disposed outside the vehicle compartment, an inner panel 34 having a hat-shaped cross section disposed outside the vehicle compartment, and an outer panel 32. Inner panel 34
And a reinforce 33 having a substantially hat-shaped cross section disposed in a sandwiched state between the reinforcer 33 and a closed cross-sectional structure.

An outer edge portion of the roof side lining (not shown) made of resin is disposed on the roof side rail 28 on the vehicle interior side of the inner panel 34. When deployed, the outer edge of the roof head lining in the vehicle width direction is open.

As shown in FIG. 3, the air bag 16
Are fixed to the front pillar 20 and the inner panels of the roof side rails 28 by fastening members 39 such as bolts.

On the inner panel of the roof side side rail 28, an assist grip mounting bracket 42 for mounting an assist grip as an interior component is provided, and the assist grip mounting bracket 42 is spaced a predetermined distance in the front-rear direction. Open and a pair is arranged. In addition, mounting flanges 44 are formed on the lower and front and rear sides of each assist grip mounting bracket 42,
The shape of the mounting flange 44 as viewed from the inside in the vehicle width direction is U-shaped.

As shown in FIG. 1, the mounting flange 44 of the assist grip mounting bracket 42 is spot-welded to the inner panel 34, and the assist grip mounting portion 46 of the assist grip mounting bracket 42 has an assist grip 48. Are bolts 50 and nuts 52
Installed by.

The lower mounting flange 44A of the assist grip mounting bracket 42 has a
Are spot-welded to the inner panel 34.
Further, a folded airbag bag 16 is disposed on the mounting flange 44A (a portion on the vehicle interior side), and a portion between the folded portion 16E of the airbag bag 16 and the mounting flange 44A is provided. , A protruding non-expandable portion 40 is interposed.

It should be noted that in FIG.
Although the binding tape 30 is interposed between the mounting grip 44A and the mounting flange 44A, as shown in FIG. Between the flange 44A,
No binding tape 30 is interposed.

Further, in the present embodiment, as shown in FIG.
Mounting flange 60 of windshield header panel 60
A protruding non-inflating portion 41 (see FIG. 2) is interposed between A and the folded portion 16E of the airbag body 16.

Next, the operation of the present embodiment will be described.

The head protection airbag device 10 of the present embodiment
In the state where the folded airbag bag body 16 is attached to the vehicle body, the folded portion 16E of the airbag bag body 16 and the assist grip provided on the inner side surface of the inner panel 34 of the roof side rail 28 are provided. Lower mounting flange 44 of mounting bracket 42
A protruding non-expandable portion 40 or protruding non-expandable portion 41 is interposed between A and its spot hitting portion P or the mounting flange 60A of the windshield header panel 60 and its spot hitting portion. As a result, the airbag 1
6, the folded portion 16E, especially the airbag bag 16
There is no direct contact between the inflatable portion filled with gas and the mounting flange 44A and its spot hitting point P, or the mounting flange 60A and its spot hitting point when the gas is developed. Therefore, the folded portion 16E of the airbag bag body 16 is not damaged by the mounting flange 44A and its spot hitting point P, or the mounting flange 60A and its spot hitting point burr.

Further, in the present embodiment, when cutting the cloth 17 of the airbag bag body, the protruding portion independent from the mounting section 35 is provided between the adjacent mounting sections 35 at the upper end edge of the airbag bag body 16. The inflatable portions 40 and 41 are left, and the protruding non-inflatable portions 40 and 41 cover the outer side surface 16 </ b> D of the outer peripheral portion of the folded airbag body 16. That is, the protruding non-inflatable portions 40 and 41 for protecting the folded portion 16 </ b> E of the airbag bag body 16 are formed integrally with the upper edge of the airbag bag body 16. As a result, the protruding non-expandable portions 40 and 41 can be formed by effectively using the surplus portion of the cloth 17 without using a separate material, and thus there is no significant reduction in productivity and a significant increase in cost. .

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the present embodiment, the mounting portion 3 is located between the adjacent mounting portions 35 at the upper edge of the airbag bag 16.
Although the protruding non-expandable portions 40 and 41 independent of 5 are formed,
Instead, as shown in FIG.
The protruding non-expanding portions 40 and 41 may be formed on other outer peripheral portions such as the lower edge portion 16F of. Further, as shown in FIG. 6, projecting non-inflating portions 40 and 41 may be formed on the outer peripheral portion of the airbag body 16 where the mounting portion 70 is continuous.

In the present embodiment, the airbag 1
The cloth 17 of the airbag bag body 16 is not limited to the woven cloth, but the cloth 17 of the airbag bag body 16 is connected to the periphery of the inflated portion by sewing or the like after the flat cloth is stacked. A bag-shaped cloth may be used. The interior parts are not limited to the assist grip 48, and may be other interior parts such as a card holder and a lamp.

Further, in the airbag device of the present invention, the rear end portion 16C of the airbag bag body 16 is
8 is also applicable to a configuration (front and rear seat head protection airbag device) disposed near the quarter pillar (C pillar). Further, the disposition position of the inflator 14 is not limited to the vicinity of the connection between the front pillar 20 and the instrument panel 22, and the inflator may be provided on the quarter pillar side or on another portion such as the front-rear intermediate portion of the roof side rail 28. It is good also as a structure provided.

The airbag device of the present invention is not limited to the head protection airbag device 10 but can be applied to other airbag devices such as a side airbag device mounted on a door, a seat or the like. .

[0037]

According to the first aspect of the present invention, there is provided an airbag apparatus in which a folded airbag body is fixed to a fixed part by a mounting part, between the fixed part and the inflated part of the airbag body. The interposed protruding non-inflating portion is formed integrally with the outer periphery of the airbag body, so that the airbag body can be reliably damaged without a significant decrease in productivity and a significant increase in cost. It has an excellent effect that it can be prevented.

According to a second aspect of the present invention, a folded airbag body is formed along a body cabin inner side surface extending from a pillar to a roof side rail at a plurality of mounting portions independently formed on an upper edge portion thereof. In the fixed airbag device, the protruding non-inflatable portion interposed between the interior product mounting bracket or the welded portion provided on the inner side surface of the vehicle body and the inflated portion of the airbag bag is attached to the airbag device. Since the outer peripheral portion is integrally formed as a protrusion, an excellent effect of reliably preventing damage to the airbag body without significantly lowering productivity and significantly increasing cost.

According to a third aspect of the present invention, the folded airbag body is formed along a side surface of a vehicle interior from a pillar to a roof side rail at a plurality of mounting portions independently protruding from an upper edge thereof. In the fixed airbag device, the folded airbag body covers the outside surface of the cabin,
Attach the protruding non-inflatable portion interposed between the inner side surface of the body vehicle and the mounting portion of the upper edge portion of the airbag bag corresponding to the interior product mounting bracket or the welded portion disposed on the side surface of the body vehicle interior. Since the projection is formed integrally and independently of the portion, there is an excellent effect that damage to the airbag body can be reliably prevented without drastically lowering productivity and significantly increasing cost.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line 1-1 in FIG.

FIG. 2 is a cross-sectional view showing a folded state of the airbag body in the airbag device according to one embodiment of the present invention.

FIG. 3 is a side view showing a vehicle cabin inner side in which the airbag device according to one embodiment of the present invention is disposed.

FIG. 4 is a plan view showing a cloth of the airbag body in the airbag device according to one embodiment of the present invention.

FIG. 5 is a plan view showing a cloth of an airbag body in an airbag device according to another embodiment of the present invention.

FIG. 6 is a plan view showing a cloth of an airbag body in an airbag device according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 Head protection airbag device 16 Airbag bag 17 Cloth 28 Roof side side rail 34 Inner panel 40 Projected non-inflated portion 41 Projected non-inflated portion 42 Assist grip mounting bracket 44 Mounting flange 48 Assist grip (interior product) 60 Window Shield header panel

Claims (3)

[Claims] 1. An airbag device in which a folded airbag body is fixed to a fixed part by a mounting part, wherein a protruding non-inflated part interposed between the fixed part and the inflated part of the airbag body is provided. , On the outer periphery of the airbag bag,
An airbag device characterized by being integrally formed to protrude. 2. An airbag device wherein a folded airbag body is fixed along a side surface of a body of a vehicle body from a pillar to a roof side rail by a plurality of mounting portions independently formed on an upper edge portion thereof. An interior part mounting bracket or a welded portion disposed on the side surface of the body vehicle interior, and a protruding non-inflatable portion interposed between the inflatable portion of the airbag body and an outer peripheral portion of the airbag body, An airbag device characterized by being integrally formed to protrude. 3. An airbag apparatus wherein a folded airbag body is fixed along a body cabin inner side surface from a pillar to a roof side rail by a plurality of mounting portions independently protruding from an upper edge portion thereof. The exterior non-inflatable portion that covers the outer side surface of the folded airbag body and intersects with the inner side surface of the vehicle body corresponds to an interior product mounting bracket or a welded portion disposed on the inner side surface of the body vehicle interior. An airbag device characterized in that the airbag device is formed so as to protrude integrally and independently of the attachment portion between the attachment portions on the upper edge portion of the airbag body.