JPH08244554A - Manufacture of air bag for side - Google Patents

Abstract

PURPOSE: To reinforce the mouth part of an air bag for the side easily without using a separate cloth, and furthermore, to manufacture the air bag itself simply. CONSTITUTION: One side of the long sides of a cloth 1 for air bag with about a rectangular form is-sewn up by folding back a specific width to form a reinforcing part 2 of the mouth of an air bag opening, and then, the cloth 1 for air bag is folded into two parts through the line dividing the long side into almost the same two parts, by making two folding-back pieces 2a at the reinforcing part 2 at the outer side, and furthermore, opening edges 4 and 5 other than the reinforcing part 2 are sewn up, and then, the cloth 1 for air bag formed in the bag form is reversed from the opening 6 and turned over.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an airbag for a side airbag device which protects an occupant from the side in the event of a collision.

[0002]

2. Description of the Related Art An airbag device is a device for restraining an occupant by inflating an airbag when a vehicle collides, and generally comprises an inflator which is a gas generator and an airbag which is inflated by the gas of the inflator.

The airbag device is not limited to one that protects an occupant from the front, but in recent years, one that protects the occupant from the side has been developed. Such side airbag devices are known in which an inflator and an airbag are embedded in a door or a door side of a back of a seat, and a mat-shaped air bag is provided between a side surface of a passenger compartment and a door of an occupant. It is to deploy the bag.

[0004]

By the way, as the above-mentioned side airbag device, there is a structure in which the mouth of the airbag opening is fixed to the opening of the airbag case that houses the inflator. In such an airbag device, a mounting hole for inserting a bolt or a rivet is bored in the mouth portion of the airbag, and the mouth portion of the airbag is clamped by the bolt and rivet in the opening portion of the airbag case.
It is fixed.

Therefore, in the airbag device, a large force is applied to the mouth portion of the airbag when the airbag is deployed, and therefore, in the airbag portion, another reinforcing cloth is superposed on the mouth portion. I am sewing.

It is an object of the present invention to easily reinforce the mouth portion of the airbag without using a separate cloth, and to easily fabricate the airbag itself.

[0007]

That is, a method for manufacturing a side airbag according to the present invention, which is adapted to the above-mentioned object, is one in which a long side of a substantially rectangular airbag cloth is folded and sewn with a required width. To form a reinforcing portion at the mouth of the airbag opening, and then, with the folded-back piece of the reinforcing portion facing outward, fold the airbag cloth in two along a line that bisects the long side. The open edge portion except for is sewn, and then the bag-shaped fabric for an airbag is inverted from the opening portion and turned over.

[0008]

In the method of manufacturing an airbag according to the present invention, the mouth portion of the airbag can be easily reinforced by bending and sewing the main body cloth without using a separate cloth. As for the production of itself, the sewing can be performed only on the two sides of the outer circumference, and further, all of these sewing can be performed in a planar manner, and the airbag can be produced extremely easily.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a first process diagram of a method for manufacturing a side airbag according to an embodiment of the present invention, FIG. 2 is a second process diagram thereof, FIG. 3 is a third process diagram thereof, and FIG. It is a perspective view which shows a bag.

In the method of manufacturing an airbag according to the above-described embodiment, first, as shown in FIG. 1, one long side 1a of a substantially rectangular cloth 1 for an airbag is folded at a fold line L parallel to the long side 1a. _The necessary width is folded back at ₁ and sewing is performed as shown in FIG. 2 to form the reinforcing portion 2 at the mouth of the airbag opening.

As shown in FIG. 4, the reinforcing portion is provided with a plurality of mounting holes 3 for mounting the airbag in the airbag case. The mounting holes 3 are formed, for example, in FIG.
It can be formed by punching or the like before the formation of the reinforcing cloth 2 as shown in FIG. 4 or after the formation of the reinforcing portion 2 as shown in FIG.

Next, in the manufacturing method of the above-mentioned embodiment, as shown in FIG. 3, the folded piece 2a of the reinforcing portion 2 is placed outside, and the airbag cloth 1 has two long sides 1a and 1b of approximately two. Fold it in half along the dividing line L ₂ , and sew the open edge portions 4 and 5 excluding the reinforcing portion 2 by L-shaped sewing. Then, after that, the bag-shaped airbag fabric 1 as shown in the same figure is inverted from the opening 6 and turned over to obtain an airbag as shown in FIG.

However, in the method of manufacturing the airbag according to the embodiment of the present invention, the reinforcement of the mouth portion of the airbag is extremely simple by bending and sewing the cloth 1 of the main body without using a separate cloth as in the conventional case. The airbag can be easily manufactured, and only the two sides 4 and 5 of the outer periphery need to be sewn. Further, since all of these sew can be performed in a flat manner, the airbag can be manufactured very easily. Is possible.

[0015]

As described above, according to the method of manufacturing the side airbag of the present invention, one side of the airbag fabric is sewn back to form the reinforcing portion at the mouth of the opening, and then this side is formed. The airbag fabric is folded in two and the open edges except the reinforcement are sewn together. The airbag fabric is reinforced and sewn by bending the fabric of the body without using a separate fabric as in the past. It is possible to perform the sewing very easily by itself, and the airbag itself need only be sewn on the two sides of the outer circumference. This is a remarkable effect that the airbag for use can be manufactured very easily.

[Brief description of drawings]

FIG. 1 is a first process diagram of a method for manufacturing a side airbag according to an embodiment of the present invention.

FIG. 2 is a second step diagram of the same.

FIG. 3 is a third process chart of the same.

FIG. 4 is a perspective view showing the airbag after completion.

FIG. 5 is a process diagram showing an example of creating an attachment hole for an airbag.

FIG. 6 is a process drawing showing another example of creating an attachment hole for an airbag.

[Explanation of symbols]

 1 Airbag cloth 1a, 1b Long side 2 Reinforcing part 2a Folding piece 3 Mounting hole 4, 5 Open edge 6 Opening

Claims (1)

[Claims] 1. A substantially rectangular airbag cloth is sewn on one long side of a cloth with a required width to form a reinforcing portion at the mouth of the airbag opening, and then the folded piece of the reinforcing portion is placed outside. Then, the airbag fabric is folded in two along a line that bisects the long side, and the open edge portion other than the reinforcing portion is sewn, and the bag-shaped airbag fabric is treated as described above. A method for manufacturing a side airbag, which comprises reversing from an opening and turning over.