JPH0684147B2 - Airbag device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an airbag device for protecting an occupant in the event of a collision of a vehicle or the like, and more specifically, an airbag body having a gas inlet, A gas generator connected to the gas injection port side, the gas generator is fixed to a base plate fixed to the fixed side, and a peripheral portion of the gas injection port of the airbag body is provided on a peripheral portion of the base plate. The present invention relates to an attached airbag device.

[Conventional technology]

BACKGROUND ART Conventionally, an airbag device has been known as a protection device for passengers of a vehicle or the like. As this airbag device,
There is JP-A-56-43890, and JP-A-54-69543 discloses a structure for holding the airbag body.

As an airbag device, as shown in FIG. 3, a gas generator 2 is fixed to a base plate 1 mounted on a fixed side of an instrument panel, a steering wheel or the like, and an airbag body 3 having a gas inlet 4 is provided with a retainer 5. When the gas generator is operated under predetermined conditions, the gas is instantaneously flown into the airbag main body 3 and the airbag main body 3 is bulged instantaneously. It is designed to let you.

[Problems to be Solved by the Invention]

However, when the airbag body 3 is inflated, that is, when the gas generator 2 is actuated, an impact force is applied to the mounting portion of the gas inlet port 4 of the airbag body 3, so that gas leakage or damage to the gas inlet port 4 occurs. There was a risk of Therefore, various methods have been adopted to strengthen the peripheral portion of the gas injection port. For example, the attachment portion is formed by stacking a plurality of cloths, or the gas injection port is formed thicker than other portions, or is fixed by using several blind beds 8.

Even if such a configuration is adopted, the retainer 5 may be deformed when the airbag body 3 swells, the peripheral edge portion of the airbag body 3 may drop off, or gas leakage may occur. Further, in the conventional mounting structure of the airbag body 3,
Since the retainer 5 needs to be inserted inside the airbag main body 3, the mounting work is extremely complicated, and the number of parts cannot be reduced, resulting in a cost increase.

An object of the present invention is to enable the airbag body to be firmly attached without performing work such as bolting with a retainer, reduce the number of parts without the risk of the airbag body falling off or being damaged, and improve work efficiency. It is intended to provide an airbag device which is capable of improving the cost and is extremely economical.

[Means for Solving the Problems]

The present invention has been made in view of the problems described above, and includes an airbag body having a gas inlet, and a gas generator connected to the gas inlet side, and the gas generator is fixed to the fixed side. In a airbag device fixed to a base plate, the peripheral edge of the base plate being attached to the peripheral edge of the gas inlet of the airbag body, a reinforcing plate is fixed along the peripheral edge of the gas inlet of the airbag body. And a U-shaped portion is formed along the peripheral portion of the base plate, the peripheral portion of the airbag body is inserted into the U-shaped portion of the base plate together with the reinforcing plate, and the side portion of the U-shaped portion is formed. It is characterized in that it is fixed to the base plate by a fixing member penetrating therethrough.

[Action]

According to the present invention, the reinforcing plate is fixed along the peripheral portion of the gas inlet of the airbag body, the U-shaped portion is formed along the peripheral portion of the base plate, and the peripheral portion of the airbag body is Since the retainer is inserted into the U-shaped portion of the base plate together with the reinforcing plate, and is fixed to the base plate by the fixing member penetrating the side portion of the U-shaped portion, the retainer can be eliminated, and along the peripheral portion of the base plate. Since the peripheral portion of the airbag body is inserted into the formed U-shaped portion, the lower end of the U-shaped portion is in a hermetically sealed state, and gas leakage can be prevented.

〔Example〕

Hereinafter, an airbag device according to the present invention will be described in detail with reference to the drawings.

1 and 2 respectively show an outline of an embodiment of an airbag device according to the present invention. In the airbag device 11, the fixed side to which the base plate 13 is attached is the steering side or the instrument panel side. Is what you can do.

The airbag device 11 has a gas generator 17 fixed to a base plate 13 by fixing means 15 such as bolts and nuts, and a gas inlet body (peripheral portion) 21 into which gas from the gas generator 17 flows. It has 19 and. The number of gas generators 17 may be one, or a plurality of gas generators 17 may be provided with a pair of left and right.

The airbag body 19 is formed by laminating a synthetic resin sheet on a cloth or the like.

A through hole 25 is formed in a substantially central portion of the base plate 13, and the front end side of the gas generator 17 is projected forward from the through hole 25,
The gas outlet 17a of the gas generator 17 is inserted into the inside of the airbag body 19 through the gas inlet 21.

A bag-shaped portion 31 is formed along the peripheral portion of the gas inlet 21 of the airbag body 19, and a strip-shaped reinforcing plate 33 made of an iron plate, a hard synthetic resin plate or the like is inserted into the bag-shaped portion 31. The reinforcing plate 33 may be fixed to the peripheral portion of the gas inlet 21 of the airbag body 19 directly without forming the bag-shaped portion 31.

A U-shaped slit along the peripheral edge of the base plate 13
The letter-shaped portion 35 is formed. Holes 38 for rivets 39 are formed in a pair of left and right side portions 36 of the U-shaped portion 35, respectively.
The U-shaped portion 35 of the base plate 13 is integrally formed by die casting or is formed by bending an iron plate. The base plate 13 is formed with a hole 22 for the fixing means 15.

A cover member 27 is attached to an end of the base plate 13 to cover the outside of the airbag body 19 when the airbag body 19 is folded, and an end 27a of the cover member 27 is attached to the base plate 1.
A rivet 39 is fastened to the side portion 36 of the U-shaped portion 35 of 3.

When fixing the rivet 39, the U-shaped part of the base plate 13
The peripheral portion of the gas inlet 21 of the airbag body 19 is inserted into the cover member 35 together with the reinforcing plate 33, and the rivet of the cover member 27 is inserted into the cover member 27.
By the 39 stopper, the peripheral portion of the gas inlet 21 of the airbag body 19 is integrally fixed. In addition to the rivet 39 fixing of the cover member 27, only the airbag main body 19 is U of the base plate 13.
It may be fixed to the character portion 35 by a rivet 39 or other fixing means.

〔The invention's effect〕

The above is the configuration of the embodiment of the airbag device according to the present invention. According to this configuration, the reinforcing plate is fixed along the peripheral portion of the gas inlet of the airbag body, and the peripheral edge of the base plate is A U-shaped portion is formed along the base plate, a peripheral portion of the airbag body is inserted into the U-shaped portion of the base plate together with the reinforcing plate, and the base plate is formed by a fixing member penetrating a side portion of the U-shaped portion. Since the retainer can be eliminated, the retainer can be eliminated, and the U-shaped portion formed along the peripheral portion of the base plate has the peripheral portion of the airbag body inserted, so that the lower end of the U-shaped portion is in a sealed state. It is possible to prevent gas leakage, reduce the number of parts such as bolts and blind rivets, etc., to perform the work easily and quickly, and to firmly fix the airbag body, and to drop it. Can be is a possibility that or damage obtain an air bag device having excellent economy without.

[Brief description of drawings]

1 and 2 respectively show an outline of an embodiment of an airbag device according to the present invention. FIG. 1 is a partial sectional explanatory view, FIG. 2 is a partial perspective view of a base plate, and FIG. The figure is an exploded perspective view of a conventional airbag device. In the figure, 11 ... Airbag device, 13 ... Base plate,
15 …… Fixing means, 17 …… Gas generator, 17a …… Gas outlet, 19 …… Airbag body, 21 …… Gas inlet, 22 ……
Hole, 25 ... through hole, 27 ... cover member, 27a ... end, 31
…… Bag-shaped part, 33 …… Reinforcement plate, 35 …… U-shaped part, 36
…… Side part, 38 …… hole, 39 …… rivet.

Claims (1)

[Claims] 1. An airbag main body having a gas injection port, and a gas generator connected to the gas injection port side, the gas generator being fixed to a base plate fixed to the fixed side. In an airbag device in which a peripheral edge of a gas inlet of the airbag body is attached to a peripheral edge, a reinforcing plate is fixed along the peripheral edge of the gas inlet of the airbag main body, and along a peripheral edge of the base plate. A U-shaped portion is formed, and the peripheral portion of the airbag body is inserted into the U-shaped portion of the base plate together with the reinforcing plate, and is fixed to the base plate by a fixing member that penetrates a side portion of the U-shaped portion. An airbag device characterized in that