JP2768376B2 - Airbag device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle
In particular, the present invention relates to an airbag device that protects a head from hitting a frame portion so as not to be injured.

[0002]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an airbag apparatus for protecting a passenger of a motor vehicle from injuries, particularly by hitting a head against a frame portion.

[0003]

According to the invention, the above-mentioned object is achieved by installing one or more airbags along the individual frame parts of a motor vehicle and fixing them with clamping devices (piping). .

[0004] The piping and the airbag advantageously form a single structural unit so that they can be secured together during installation. Along the frame part, the airbag adapted to the shape of the frame can be easily fixed with a clamping device or installed later.

[0005] The airbag is preferably tubular and is sized to cover all of the frame portions that are at risk of collision and to prevent passengers from directly contacting the frame during a collision.

[0006] The reaction characteristics are greatly improved by using a plurality of gas generators arranged and distributed along the airbag.

In a tubular airbag, loading is performed at both ends of the tube.

[0008] One preferred method of generating gas is
The use of a squib placed parallel to the airbag.

In this case, both ends of the squib are ignited to further enhance the reaction characteristics. With sufficient performance of sensors and / or electronics, ignition or filling is initiated on the side of the airbag that corresponds to the direction in which the higher acceleration is acting.

[0010] The generation of gas and the tensile strength limit of the material of the airbag are adjusted, and in some cases, a fuse surrounded by a stabilizer is introduced into the airbag, and the gas released after ignition is supplied using another supply device. If the airbag can be inflated directly without using it, the reaction characteristics will be further enhanced.

As a material of the airbag, a well-known plastic which is rich in flexibility and absorbs impact can be used. This material retains its properties even at high temperatures and does not burn.

To ignite the airbag, it is preferred to use coated Stupinen as the ignition wire.

[0013] As described above, in addition to the method of taking the squib into the airbag, there is also a method of attaching a gas conduit to a frame portion for fixing the airbag. Gas passes from the gas generator through its conduit to the airbag.

Next, another embodiment of the present invention will be described in more detail. Particularly long, e.g. tubular airbags extend along the upper part of the frame part of the door of the vehicle body, in particular the front two doors. However, it is also possible to extend along the two rear doors. In order to generate filling pressure inside the airbag,
A tube adapted to the flow (shape) of the door frame can be installed inside the airbag. In this tube, a filling gas is generated at a constant pressure. The tube is preferably formed such that it first exerts a blocking effect on the generated filling gas and then opens into the airbag after a certain filling gas pressure has developed inside the tube. This is achieved, for example, by providing one or more predetermined breaking points on the inner wall of the tube.

To form the airbag unit, the two long sides of the cover cloth of the airbag and the tube are sewn at seams extending in the longitudinal direction of the tube. Further, a protruding portion extending in the longitudinal direction of the tube and forming a stitching portion is suitably formed on the tube. Stitching unit, in order to allow the sewing of the cover fabric of the air bag is made from a soft material than the material of the tube for the purpose of blocking effect. As a tube and stitching section seamless molded product,
Made from plastic, especially two plastic components.

Gas generators are installed at both ends of the tube to generate the filling pressure. This device can be used as a combustor
You can also .

In order to fix the folded air bag device and the air bag device, a mechanical fixing means such as a clamp or a fixing plate is attached. These fixing means are inserted together with a fixing member between a fixed portion of the piping and a corresponding fixed portion of the vehicle body of the vehicle at a fixed portion of the piping in the structure of the vehicle. These mechanical fixing parts in the form of fixing plates or clamps are preferably connected to the airbag device in the region of the seam . In the area of the fixed portion sewn portion, or sewn together, sewn
Or poured into the stomach mating portion, can or pressing from the outside on top of the stitched portion which is sewn to the cover cloth of the air bag.

[0018]

Embodiments of the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a first embodiment of an airbag device mounted on a frame of a door of an automobile; FIG. 2 is a second embodiment of an airbag device; FIG. 3 is an airbag device shown in FIG. FIG. 4 is a cross-sectional view of the airbag apparatus shown in FIG. 1 in an activated state; FIG. 5 is another embodiment of a filled airbag; FIG. FIG. 7 is a cross-sectional view of an airbag unit made of a folded airbag cover cloth; FIG. 7 is a first embodiment for mounting an airbag unit in combination with piping for fixing to a car body; FIG. FIG. 9 shows a second embodiment for mounting an airbag unit in combination with a piping fixed to a part; FIG. 9 shows a first embodiment for fixing a mechanical fixing part to the airbag unit; 11 (A) and 11 (B) show an embodiment for fixing the fixed part to the airbag unit; FIG. 12 shows the mounting form for fixing the fixed part to the airbag unit; 1 is an embodiment of an airbag unit configured for use.

In FIG. 1, an airbag device is provided on a frame of a door of a motor vehicle to protect itself from a collision. The airbag 1 is installed in an area where there is a danger of collision of the door frame 2. In FIG. 1, the airbag is filled. Instead of one airbag,
It is also possible to install a plurality of airbags 1 next to each other and attach a gas generator thereto.

The ignition of the gas generator is performed by the reaction of the sensor 5.

In the embodiment shown in FIG. 1, as the gas generator, a squib 3 is installed substantially in parallel with the substantially tubular airbag 1 along an area where there is a danger of collision of the frame 2, It is ignited by an ignition line 7. The ignition wire 7 is a coated Stupine (Stupine)
ine). The squib 3 can also be ignited by two ignition wires 7 at both ends.

In order to generate gas, a conventional gas generator 4 can be used instead of the squib 3. As is well known, the gas generator is ignited by the sensor 5 as well as the squib (FIG. 2). The filling gas is supplied to the airbag 1 via a gas conduit 8 passing along the frame 2. Filling gas generators 4 may be provided at both ends of the airbag 1.

FIG. 3 shows one method of fixing the airbag 1 to the frame 2 by piping 6. In this case, the piping 6 is fixed to the frame 2. The uninflated airbag 1 is hidden from the interior of the vehicle for decorative reasons. A gas conduit 8 is provided between the squib 3 and the folded airbag 1. The release of gas into the airbag 1 is performed via a diffuser 10.

FIG. 4 shows the released airbag mounted on the frame part 2 of the vehicle door. The fixing using the piping 6 is similar to the embodiment shown in FIG. In this embodiment, a gas generator in the form of a squib 3 is provided inside the airbag. The squib 3
For example, it can be wrapped with an explosive force suppressor (stabilizing coating) made of a material as described in EP 585612A3.

As shown in FIG. 5, in the embodiment in which the airbag 1 is filled, a rope having high tensile strength is formed below the cover cloth of the filled airbag, particularly, at a curved portion. The extended stable cord 23 is extended. This stabilizing cord 23 is sewn to the cover cloth of the airbag 1. This stabilizing cord 23 can further stabilize the airbag when catching the passenger's head in the event of an accident, especially if the window glass fitted to the car door is broken or opened. The fixing of the stabilizing cord 23 is carried out at fixing points 27 and 28 of the vehicle body of the vehicle, for example, for an airbag installed in the front door region of the vehicle, such as columns A and B.

The airbag, when folded, has an elongated shape as shown in FIG. 12, especially a tube shape. When the airbag 1 is attached to the body of an automobile, a body portion, that is, an upper portion of a door frame for individual doors is preferable.
As can be seen from FIG. 5 and FIG. The airbag 1 is a component of an airbag unit 22 as shown in the embodiment of FIGS. The protruding tips 33, 34 of the stability cord 23 are fixed to the vehicle body.

The airbag device shown in any of the embodiments has the pipe 9. This tube 9 is made of a flexible material,
In particular, it is made as a seamless molded product from plastic materials. The tube 9 is made of a material which has a blocking effect on the filling gas pressure created in the tube. This blocking effect ensures that a constant filling gas pressure builds up inside the tube 9 after igniting the propellant generating the filling gas. When this pressure is achieved,
One or more predetermined break points 24 open in the cover of the tube 9. Thereafter, the filling gas pressure is reduced to the airbag 1
Will be filled.

In the state shown in FIG. 6, the cover cloth of the airbag is folded (fold 14). The fold of the fold 14 is parallel to the tube 9 and extends over the length of the tube. Outer fold 15 of airbag cover cloth
Are around the folded airbag 1 and the tube 9. The long side of the outer fold 15 of the cover fabric airbag are sewn to the tube 9 in the area of stitching 13 formed. Further, the vertical side 12 inside the fold inside the fold 14 is also sewn to the stitched portion 13. In this way, the internal space of the air bag can be closed, and the pipe 9 can be installed therein. The seam 13 is made of a softer material than the tube 9 so that it can be sewn to the two long sides 11 and 12 of the cover cloth of the airbag. The sewing along the long sides 11 and 12 of the cover fabric of the airbag is performed by sewing.
This is performed on both sides of the mating portion 13.

The both ends of the tube 9 in order to generate the fill pressure is provided with a gas generator, these devices burn to quickly burn a propellant to form the gas pressure early enough Formed as a device . When the blocking effect exerted by the tube 9 is overcome, a predetermined break point 24 inside the airbag is opened and the cover of the airbag is filled. The predetermined breaking point 24 may be a notch extending vertically in the tube 9.

The ignition of the two gas generators is effected electrically via wires 29, 30 which run into the tube 9.

FIG. 7 shows an embodiment for mounting the air bag unit 22 in combination with the piping 6 fixed to the frame of the automobile. In this embodiment, the stitching portion 13 is folded back. The folded seam 13 has two folds 16 and 1
7, the outer fold 16 and the inner fold
It is made up of only 17. Outer folds 15 of the cover fabric of the air bag is between two folding portions 16 and 17 (FIG. 7). Thereby, the airbag unit 22 can be bonded to the plastic material of the piping 6. Because materials (nylon cloth) that cannot be bonded normally
Cover cloth of the air bag made from, the outside of the folded portion 1
6 because it is covered. In that case, the outer
The fold 16 can be bonded to the material of the piving 6. Although the sewn at the outer side of the folding portion 16, in which, as already described, the long side 11 of the outer fold 15 is held between the two folding portions 16 and 17, the long side of the inner fold Reference numeral 12 is placed on the folding portion 17.

In the embodiment shown in FIG. 7, a cover 25 is provided to further reinforce the airbag unit 22.
Is formed on the vertical side surface of the piping 6 similarly as a vertical side surface. Cover 2 in that area for mounting
5 is installed, and the airbag unit 22 is mounted in the cover 25. In other parts of the longitudinal side of the piping 6, for example, there is a weak part 31 at the transition between the cover 25 and the material of the piping 6, so that the cover 2
5 extra material has been removed. The material of the cover is
The airbag is designed to be able to expand into the interior of an automobile by losing the filling pressure when the airbag is filled.

The combination of the piping 6 and the airbag device 22 is further fixed to the vehicle body at a fixing point 19 of the vehicle body. This fixing part is formed by a fixing part 20 provided on the piping 6 and a fixing part 21 attached to the body of the automobile. These fixed parts 20 and 21 make a fixed connection to the fixed part of the piping.

In the embodiment shown in FIG. 8, the airbag device 22 is fixed by one or a plurality of fixing portions 18. As will be described in more detail, this fixing part is firmly fixed to the airbag unit 22 while being embedded together with a fixing member between the fixing part 20 on the piping and the fixing part 21 of the vehicle body soil. It is also possible to provide a mechanical fixing part in the form adapted to the fixing parts 20, 21, for example in the form of a fixing plate. Since the fixing plate is formed to be bent, the fixing plate is formed in a fence shape or a comb shape as shown in FIGS. 11 (A) and 11 (B). The fixing plate is provided in the longitudinal direction so that the fixing portion 2
One is adapted to the curved shape.

However, instead of the specially shaped fixing plate, a plurality of clip-shaped mechanical fixing means having a cross section also shown in FIG.

The fixed part 18 and the airbag unit 2
2 can be connected, for example, by the method shown in FIGS. The fixing portion 18 is pressed by the clip biting portion 32 onto the seam portion 13 which is bound to the long sides 11 and 12 of the cover cloth of the airbag. However, the end of the fixed portion 18 to be connected to the sewing unit, it is also possible to sew together the long sides 11 and 12 of the cover of the airbag. Furthermore, as shown in FIG. 10, an end connected to the sewn portion of the fixed portion 18, sewing
It can also be poured into the plastic material of the mating portion 13 (FIG. 10). The thread forming the seam is led out through a corresponding opening in the fixing part 18.

The airbag unit 22 can further include another cover 32. Airbag unit 2
In order to further support 2 on the body of the motor vehicle, a support 26 can be formed on the piping. The support holds the airbag unit 22 wrapped by another cover 32 at a desired position on the vehicle body.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of an airbag device mounted on a frame of a door of an automobile.

FIG. 2 is a view showing a second embodiment of the airbag device.

FIG. 3 is a cross-sectional view of the airbag device shown in FIG. 1 in a stored state.

FIG. 4 is a cross-sectional view of the airbag apparatus shown in FIG. 1 in an activated state.

FIG. 5 is a view showing another embodiment of a filled airbag.

FIG. 6 is a cross-sectional view of an airbag unit composed of a tube and a folded airbag cover cloth.

FIG. 7 is a cross-sectional view showing a first mode for mounting an airbag unit combined with piping for fixing to a vehicle body of an automobile.

FIG. 8 is a diagram showing a second embodiment for mounting an airbag unit in combination with piping fixed to a vehicle body part.

FIG. 9 is a view showing a first mode for fixing a mechanical fixing portion to the airbag unit.

FIG. 10 is a view showing a second mode for fixing a mechanical fixing portion to the airbag unit.

FIG. 11 shows an embodiment for fixing the fixing portion to the airbag unit, and (A) and (B) are partial plan views.

FIG. 12 is a diagram showing an embodiment of an airbag unit configured for mounting.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Airbag 2 Frame part 6 Clamping device (piping) 9,10 Tube 11,12 Long side 13 Sewing part 14 Fold 15 Fold 16,17 Folding part 18 Fixed part 19,20,21 Fixed part 22 Airbag unit 24 Breaking part 25 cover (support) 26 support

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60R 21/22 B60R 21/20

Claims (18)

(57) [Claims] 1. An airbag comprising at least one airbag (1) capable of being filled with a gas, and at least one gas generator (4) for filling the airbag, wherein the airbag comprises:
When the bag (1) is folded,
Such as the upper roof frame or the door frame
It is elongated along the frame (2)
An airbag device for an automobile extending along the frame portion (2), the airbag device adapted to the shape of the frame portion (2),
When a predetermined pressure is generated inside
The airbag (1) for filling the airbag (1)
A pipe (9; 10) installed inside a car and the airbag (1) are connected to the frame part (2) of the automobile.
Airbag device comprising the; (18 6), in that it comprises an clamping device for attachment to. 2. The airbag device according to claim 1, wherein the airbag and the clamping device form a structural unit that can be fixed to the individual frame parts. An airbag device characterized by the above. 3. The airbag device according to claim 1 , wherein the pipe (9) has a blocking effect on the generated filling gas and has one or more predetermined break points (24). ), Wherein these broken locations are opened inside the air bag when a predetermined pressure of the filling gas spread inside the pipe is received. The airbag device according to any one of claims 4] claims 1 to 3, airbag apparatus characterized in that said tube (9) is sewn firmly to the cover fabric of the airbag (1) . 5. The airbag device according to claim 4 , wherein two long sides (11, 12) of the airbag (1).
Is sewn to the pipe (9) at a seam extending in the longitudinal direction of the pipe (9). The airbag apparatus according to any of the claims 6] claims 1 to 5, wherein the folds of the air bag (11) (1
4) runs parallel to said tube (9; 10) and the outer fold (15) of the cover fabric of the airbag is around the wrap of the folded airbag (11) and the outer fold An airbag device wherein the long side forms one of the two long sides sewn to the tube (9). 7. The airbag device according to any one of claims 1 to 6, the two long sides of the cover fabric of the air bag (11, 12) is sewn if formed in the tube (9)
An airbag device, which is sewn to the stub (13). 8. The airbag device according to claim 7 , wherein the stitching portion is vertically folded, and two long sides of the cover cloth of the airbag.
One of the found airbag device, characterized in that in between the two folding portions (16, 17). 9. The airbag device according to claim 8, wherein an outer folded portion (16) is adhered to said piping (6). 10. The airbag device according to any one of claims 1 to 9, wherein the tube (9) and folded air bag unit the consisting airbag (1) (2
2) is a fixing point (1) located between the fixing point (20 ) of the piping (6) and the fixing point (21) of the vehicle body.
9) The airbag device, wherein the airbag device is fixed by one or more fixing portions (18) embedded together with the fixing member. 11. The airbag device according to claim 10 , wherein the one or more mechanical fixing parts (18) comprise:
An air back device fixed to an air bag unit (22) in a region of a seam (13). 12. The airbag device according to claim 10 , wherein one or a plurality of mechanically fixed parts (1) are provided.
8) is a long side (11, 1) of the stitched portion (13) and the cover cloth of the airbag sewn to the stitched portion.
2) An airbag device which is pressed against the airbag device. 13. The airbag device according to claim 10 , wherein one or a plurality of mechanical fixing portions (18) of the stitching portion (13) is a long side of a cover cloth of the airbag. An air bag device sewn together with (11, 12). 14. The airbag device according to claim 10, wherein the fixing part (18) is formed as a fixing plate or a clamp. 15. The airbag device according to any one of claims 1 to 14, the curved region of the cover cloth airbag, stable code (23) is provided with a high tensile strength, the stability code, An airbag device, wherein the protruding tip is fixed to a vehicle body of an automobile. 16. The airbag device according to any one of claims 1 to 15, for the air bag device (22), the piping (6) mechanical support (25; 6)
An airbag device, characterized in that an airbag is formed. Formed in the airbag device according to any one of claims 17] claims 1 to 16, the support body formed piping (6), as a cover (25) enclosing the air bag device mounted (22) An airbag device characterized by being performed. 18. The method according to any one of claims 1 to 16
In an airbag device, an airbag unit (22)
Is provided with an additional cover (32).
Airbag device.