JP2629531B2 - Airbag body of airbag device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag body of an airbag device for protecting an occupant in the event of an automobile collision.
More specifically, the present invention relates to an airbag body of an airbag device which is connected to a gas generator provided on a door side of an automobile and which is inflated from the door side when the gas generator is operated.

[0002]

2. Description of the Related Art Conventionally, an airbag device has been known as a device for protecting a vehicle occupant. This airbag device is disclosed in Japanese Patent Publication No. 56-43890,
Japanese Patent Application Laid-Open No. 54-69543 and Japanese Utility Model Application Laid-Open No. 51-44517, etc. exist as a holding structure of the airbag body. In addition, Japanese Utility Model Application Laid-Open No. 61-8 / 1986 discloses that the seam of the airbag body is covered and protected.
No. 5549 exists. As the airbag device, there is known an airbag device which is attached to an instrument panel or a steering wheel, or a door or a seatback. When the gas generator of the airbag device attached to the door side detects the impact of the side part, the gas generator is activated, the gas instantaneously flows into the airbag body, and the airbag body is instantaneously It is adapted to bulge to the side of the occupant.

As shown in FIG. 6, an airbag apparatus 1 provided on the door side of an automobile has a gas generator 7 on a side of an inner panel 3a of a door body 3 of a door 2 via a base plate 5.
Airbag body 1 having a gas inlet 9 formed corresponding to the gas outlet 7a of the gas generator 7.
1 is a retainer 10 along the outer peripheral edge of the gas inlet 9.
And is fixed to the base plate 5 via the The airbag body 11 is formed by sewing outer peripheral edges 12a, 13a of a plurality of base cloths, for example, a front base cloth 12 and a rear base cloth 13, by sewing together.

When the airbag body 11 of the airbag device 1 is deployed, that is, when the airbag body 11 is inflated, the airbag body 11 is vertically elongated with respect to the door body 3 of the door 2 and the door glass 4. A pair of suspension belts 17 are sewn between the front base cloth 12 and the rear base cloth 13 in a vertical position so that the airbag body 11 does not expand greatly toward the occupant W side. The width of the airbag body 11 when inflated is restricted by the length of the suspension belt 17.

[0005]

The airbag body 11 is composed of an outer peripheral edge 1 of a front base cloth 12 and a rear base cloth 13.
2a and 13a are formed by sewing, and the width of the airbag body 11 at the time of inflation is designed to be narrow in advance, so that the length of the suspension belt 17 is designed to be short. When the short suspension belt 17 is sewn between the base fabrics 12 and 13 by sewing, there is a drawback that the sewing operation is extremely difficult due to the short suspension belt 17 and the workability cannot be improved. .

SUMMARY OF THE INVENTION It is an object of the present invention to easily perform a sewing operation when sewing a suspension belt to a base fabric by sewing, and to significantly improve workability. An object of the present invention is to provide an airbag body of an airbag device in which the amount of expansion of the bag body toward the occupant can be regulated by a suspension belt.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem, and is connected to a gas generator provided on a door side of an automobile, and swells from the door side when the gas generator is operated. In the airbag body of the airbag device, the airbag body is formed by sewing an outer peripheral edge of a front base cloth facing the occupant side and a rear base cloth facing the door side. The suspension belt is formed and sewn via a patch cloth between the front-side base cloth and the rear-side base cloth, and the length of the belt part of the suspension belt is increased by the bulging of the airbag body. The airbag body is formed so as to be longer than the width at the time, and an intermediate portion of the formed belt portion is pinched and sewn on the side opposite to the airbag body side, and the expanded shape of the airbag body when inflated is a belt of the suspension belt. Department is regulated It is characterized in.

[0008]

According to the present invention, the airbag body is formed by sewing outer peripheral edges of a front base cloth facing the occupant side and a rear base cloth facing the door side. Suspended belts are sewn via patch cloths between the base fabric on the side and the rear fabric, respectively, and the length of the belt portion of the suspended belt is longer than the width of the airbag body when the airbag body is inflated. Since the belt portion is formed, the belt portion of the suspension belt can be pulled out, sewing can be easily performed by sewing the base fabric and the end portion of the suspension belt, and then the intermediate portion of the long belt portion of the suspension belt can be formed. Is pulled out to the side opposite to the airbag body side, and the seam is sewn, and the length of the sewn seam is adjusted, so that the deployed shape of the airbag body when inflated can be variously adjusted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An airbag body of an airbag device according to the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 5 schematically show one embodiment of the present invention, in which parts corresponding to those in FIG. 6 are denoted by the same reference numerals, and further detailed description will be omitted. The airbag body 23 of the airbag device 21 on the door 2 side includes a front base cloth 24 facing the occupant W side and a rear base cloth 25 facing the door 2 side, which are formed relatively long in the vertical direction. And the base fabric 2 on the front side
4 and the outer peripheral edges 24a and 25a of the rear base cloth 25 are formed by sewing. Reference numeral 27 denotes a sewing portion.

As shown in FIGS. 1 and 3, a gas injection port 31 is formed in the base cloth 25 on the rear side of the airbag body 23, and the outer peripheral edge of the gas injection port 31 is fixed to the base plate 5 which is a fixed side. At the side, it is attached via a retainer 10 as shown in FIG. The gas generator 7 and the gas jet 7
The structure a and the mounting means are not limited to those shown.

A suspension belt 33 is sewn between a base cloth 24 on the front side facing the occupant W side of the airbag body 23 and a base cloth 25 on the rear side facing the door 2 side. In this embodiment, the suspension belt 33 is vertically moved (see FIG. 3).
In this example, a pair is formed (left and right), but the present invention is not limited to this, and one or three suspension belts 33 may be used.

A central portion 33a of the suspension belt 33 is sewn to the front base fabric 24 to form a sewn portion 35. Further, the front end portion of the belt portion 33b of the suspension belt 33 is sewn to the rear base cloth 25 to form sewn portions 37, respectively.

The sewing state of the suspension belt 33 between the front base cloth 24 and the rear base cloth 25 will be described in more detail with reference to FIGS. FIG. 3 is an exploded perspective view of the entire airbag body 23, and FIG. 4 is a partially sewn state of the right suspension belt 33 on which the gas inlet 31 of FIG. 3 is formed. 5 is a cross-sectional view of a part of the left suspension belt 33 in a state where the gas inlet 31 is not formed in FIG.

As shown in FIGS. 4 and 5, a central portion 33a of the suspension belt 33 is sewn to the front base fabric 24 via patch cloths 41 and 42 to form a sewn portion 35. I have. The patch cloth 41 is sewn to the base cloth 24 on the front side to form a sewn portion 36. The tip of the belt portion 33b of the left and right suspension belts 33 is 2
Sewing portions 37, 37 are formed respectively by sewing on the belt catchers 45, 46 in a stacked state. The patch cloth 42 is previously sewn to the central portion 33a of the suspension belt 33 to form sewn portions 38, respectively. In the belt catcher 45 of the right suspension belt 33 in which the gas injection port 31 is formed, a through hole 45a similar to that of the gas injection port 31 is formed.

The belt catcher 45 of the right suspension belt 33 having the gas inlet 31 formed along the outer peripheral edge of the gas inlet 31 of the rear base cloth 25 while being sandwiched between the pair of patch cloths 48 and 49. To form a sewn portion 51. The outer peripheral edge of the patch cloth 49 is sewn to the rear base cloth 25 by a sewing portion 52, and then the belt catcher 45 is sewn by the sewing portion 53. Next, the belt catcher 45 and the pair of patch cloths 48 and 49 are sewn along the outer peripheral edge of the gas injection port 31 of the rear fabric 25 to form a sewn portion 51. The pair of patch cloths 48 and 49 also have through holes 48a and 49a, respectively.

FIG. 5 shows the sewing state of the left suspension belt 33 on which the gas inlet 31 is not formed.
The belt catcher 46 of the suspension belt 33 has no through hole for a gas injection port. Further, the belt catcher 46 is sewn to the rear base cloth 25 via the patch cloth 55 on one side by the sewn portion 35.
The belt catcher 46 can be sewn using a pair of patch cloths 55 as shown in FIG.

As shown in FIG. 1 and FIG.
Is longer than the width X of the airbag body 23 when the airbag body 23 is inflated.
By pulling out the third belt portion 33b, the rear base fabric 25 and the end of the belt portion 33b of the suspension belt 33 can be easily sewn by sewing.

Next, as shown in FIG.
When the airbag body 23 is inflated, the intermediate portion of the long belt portion 33c is pulled out to the side opposite to the airbag body 23 side and is sewn, and the length y of the sewn seam is adjusted. Can be adjusted in various ways. Reference numeral 57 denotes a sewn portion, and the sewing state of the sewn portion 57 by the pick sewing can be variously changed. For example, the sewn portion 57 is formed in a plurality of rows, and the sewn portions in the plurality of rows are formed. 57 can have strength.

[0019]

The configuration of the airbag body of the airbag device according to the embodiment of the present invention has been described above. According to this configuration, the airbag body is connected to the front base fabric facing the occupant side. The outer peripheral edge of the rear base fabric facing the door side is formed by sewing, and the suspension belt is sewn between the front base fabric and the rear base fabric via a patch cloth, respectively. Since the length of the belt portion of the suspension belt is formed longer than the width of the airbag body when it is inflated, the belt portion of the suspension belt is pulled out, and the belt portion of the base cloth and the belt portion of the suspension belt is pulled out. Sewing can be easily performed by sewing the ends, sewing work can be performed easily and quickly, workability can be significantly improved, and the middle part of the long belt part of the suspension belt is located on the airbag body side. Pull it out to the opposite side and sew it, By adjusting the length of the seam, the deployed shape of the airbag body when inflated can be variously adjusted by the length of the belt portion, and further, the seam is formed on the side opposite to the airbag body side. Therefore, it is possible to obtain the airbag body of the airbag device, which does not have a risk of increasing resistance due to friction or the like when the airbag body is inflated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an airbag body of a door-side airbag device according to the present invention.

FIG. 2 is a partial sectional view of a belt portion of a suspension belt of the airbag body of the present invention.

FIG. 3 is an exploded perspective view of the airbag body of the present invention.

FIG. 4 is a partial cross-sectional view of the suspension belt on the side where the gas injection port of FIG. 3 is formed.

FIG. 5 is a partial cross-sectional view of the suspension belt on the side where the gas inlet is not formed in FIG. 3;

FIG. 6 is a sectional view of a conventional airbag device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Airbag apparatus 23 Airbag main body 24 Front base cloth facing the occupant side 25 Rear base cloth facing the door side 27 Sewing part 31 Gas injection port 33 Suspension belt 33a Central part 33b Belt part 33c Belt part 35 sewing part 37 sewing part 38 sewing part 41 patch cloth 42 patch cloth 45 belt catcher 46 belt catcher 48 patch cloth 49 patch cloth 51 sewing part 55 patch cloth 57 sewing part

Claims (1)

(57) [Claims] 1. An airbag body of an airbag device connected to a gas generator provided on a door side of an automobile and swelling from the door side when the gas generator is operated. Is formed by sewing outer peripheral edges of a front side base cloth facing the occupant side and a rear side base cloth facing the door side, and the front side base cloth and the rear side base cloth A suspension belt is sewn through a patch cloth therebetween, and a length of the belt portion of the suspension belt is formed to be longer than a width of the airbag body when the airbag body is inflated, and an intermediate portion of the long belt portion is formed. The airbag apparatus is characterized in that the airbag body is pinched and sewn on the side opposite to the airbag body side, and the deployed shape of the airbag body when inflated is regulated by the belt portion of the suspension belt. Airbag body.