KR100814668B1 - Inflator assembly structure of passenger air-bag - Google Patents

Abstract

An inflator assembly structure of a passenger air-bag is provided to maintain predetermined injecting direction from an inflator without switching the direction of chambers in case the inflator having two chambers is combined to an inflator housing. An inflator assembly structure of a passenger air-bag comprises an inflator for the passenger air-bag(100), and an inflator housing(200) having a slot(210) receiving the inflator. A rotation restraint pin(220) and an elastic supporting pin are projected toward the axial center of the inflator on the slot of the inflator housing or an axial extension line of the slot. An insertion groove has the rotation restrain pin inserted into one end of the inflator. The rotation restrain pin is curved toward the elastic supporting pin. The elastic supporting pin is extended toward the axial center of the inflator continuously after curved toward the rotation restrain pin. The front end of the inflator extended toward the axial center of the inflator is inclined toward the end part of the inflator.

Description

INFLATOR ASSEMBLY STRUCTURE OF PASSENGER AIR-BAG < RTI ID = 0.0 >

1A is a sectional view showing an inflator coupling structure of a passenger seat airbag according to the prior art.

1B is an exploded perspective view showing an inflator coupling structure of a passenger-side airbag according to the prior art.

2 is a front perspective view showing an inflator coupling structure of a passenger-side airbag according to an embodiment of the present invention.

3 is a rear perspective view showing an inflator coupling structure of the passenger-side airbag according to the embodiment of the present invention.

4 is a cross-sectional view illustrating an inflator coupling structure of a passenger seat airbag according to an embodiment of the present invention.

5 is a perspective view showing a structure of an inflator having two chambers.

6A and 6B are perspective views showing a modified example of the inflator coupling structure of the passenger-side airbag of the present invention.

≪ Description of main constituent code >

100 ... Inflator

110 ... fitting groove

200 ... inflator housing

210 ... home

220 ... rotation restraining pin

230 ... elastic support pin

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inflator coupling structure of a passenger-side airbag, and more particularly, to an inflator coupling structure of a passenger-side airbag capable of preventing a product failure due to misassembly of a directional inflator.

Generally, an airbag for a front seat of a vehicle includes an airbag (driver air-bag) mounted on the steering wheel to protect the driver of the driver's seat, a passenger airbag provided on the instrument panel disposed in front of the passenger seat, Bag), and in particular, there is a recent surge in demand for vehicles equipped with passenger airbags.

Korean Patent Laid-Open Publication No. 10-2006-0053718 (hereinafter referred to as "prior art") discloses a structure of a general passenger's seat airbag module, which will be briefly described with reference to FIG.

As shown in the drawing, the passenger-side airbag module according to the related art includes an airbag housing 4 installed in the instrument panel 2 so as to face the passenger's seat, and an airbag housing 4 housed in the airbag housing 4, And an inflator 8 for supplying a high-pressure gas to the airbag cushion 6. The airbag cushion 6 is provided with an airbag cushion 6,

A cushion retainer 10 is mounted on the inner side of the airbag housing 4 so as to be coupled with the airbag cushion 6 to support the airbag cushion 6 from the airbag housing 4, An inflator housing 12 for fixing the inflator 8 to the airbag housing 4 is mounted at the rear of the housing 4.

The cushion retainer 10 is formed with a plurality of ventilation holes 10a so that a high pressure gas injected from the gas ejection holes 8a of the inflator 8 can be supplied to the inside of the airbag cushion 6. [ The position of the gas ejection hole 8a of the inflator 8 in the circumferential direction may vary depending on the type of the vehicle.

However, according to this prior art, since the inflator 8 is cylindrical and the gas ejection hole 8a is formed around the inflator 8, it is very difficult to exactly match the ejection direction of the gas ejection hole 8a. Particularly, when the inflator is assembled to the inflator housing 12, there is a problem that the productivity and the quality of the product are greatly deteriorated.

According to the conventional technique, the cushion retainer 10 must be engaged in a state in which the inflator 8 is housed in the inflator housing 12. In this process, the inflator 8 can move, Assembly work itself was also difficult.

As shown in FIG. 5, the inflator having two chambers, which is widely adopted in recent years, has different lengths in both chambers and affects the injection direction, so that the direction of installation can also be significant .

However, according to the above-described prior art, when the inflator is mounted in the inflator housing 12, the installation direction of the inflator may be reversed, so that product failure due to misassembly may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inflator coupling structure of an assistant-passenger-seat airbag capable of preventing misfitting of an inflator and maintaining a predetermined injection direction from the inflator.

It is another object of the present invention to provide an inflator coupling structure of an assistant-passenger-seat airbag that can accurately maintain an injection angle of an inflator according to a vehicle type.

It is also an object of the present invention to provide an inflator coupling structure of a passenger-side airbag that can facilitate assembly work of an inflator.

In order to achieve the above-mentioned object, an inflator coupling structure of a passenger seat airbag according to the present invention comprises:

An inflator of a passenger-side airbag having a generally cylindrical shape and an inflator housing having an elongated groove for accommodating the inflator,

A rotation restraining pin and an elastic supporting pin are respectively protruded toward the axial center of the inflator on an extension line of the elongated groove or the groove of the inflator housing,

And one end of the inflator is formed with a fitting groove into which the rotation restraining pin is fitted.

In this case, the rotation restricting pin is bent toward the elastic support pin.

Further, the resilient support pin is bent toward the rotation restraining pin and then continuously extended toward the axial center of the inflator.

Further, the tip end of the elastic support pin formed to extend toward the central axis of the inflator is inclined toward the end of the inflator.

The resilient support pin is bent toward the rotation restraining pin and then continuously extended toward the axial center of the inflator and then inclined toward the end of the inflator. .

It is also preferable that the rotation restraining pin is changeable along the rim of the groove.

In addition, it is preferable that the elastic support pin is also changeable along the rim of the groove.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4 attached hereto. 2 and 3 are a front perspective view showing an inflator coupling structure of a passenger seat airbag according to an embodiment of the present invention, and Fig. 4 is a sectional view thereof.

The inflator coupling structure of the passenger's seat airbag according to the embodiment of the present invention includes an inflator 100 of a generally cylindrical front passenger's seat airbag and an inflator housing 100 having an elongated groove 210 for receiving the inflator 100 200). ≪ / RTI >

The rotation restraining pin 220 and the elastic support pin 230 protrude toward the central axis of the inflator 100 and the end of the one end of the inflator 100 An insertion groove 110 into which the rotation restraining pin 220 is inserted is formed.

2, the rotation restraining pin 220 is bent toward the elastic supporting pin 230 and inserted into the fitting groove 110 of the inflator 100 while being inserted in the axial direction thereof . Accordingly, the inflator 100 is prevented from rotating and is held in place to maintain the predetermined position. The rotation restraining pin 220 may be bent substantially vertically so that the fitting operation is facilitated.

The rotation restraining pin 220 extends from the lower end of the rim 210 but may be formed at an arbitrary point along the rim of the rim 210 so that the gas releasing hole 120 of the inflator 100 It is preferable to set the position to a predetermined position.

3, the resilient support pin 230 is bent toward the rotation restraining pin 220 and continuously formed to extend toward the axial center of the inflator 100. As shown in FIG.

In particular, the tip of the elastic support pin 230, which is formed to extend toward the axis of the inflator 100, is tilted outward toward the end of the inflator 100. Accordingly, when the inflator 100 is mounted, it slips along the inclined portion and is resiliently seated.

Since the movement of the inflator 100 is minimized by the elastic support pins 230, the gas ejection hole 120 of the inflator 100 can maintain an accurate injection angle.

The elastic support pins 230 extend from the lower end of the rim 210 but are formed at appropriate points along the rim of the inflator 100 so that the gas discharge holes 120 of the inflator 100 are positioned at predetermined positions. .

The position of the rotation restraining pin 220 and the elastic supporting pin 230 are determined by the position of the gas discharge hole 120 of the inflator 100 and the rigidity of the inflator 100 The fixing can be performed and the subsequent assembling process becomes very simple.

In order to connect the inflator 100 to the inflator housing 200, the fitting groove 110 formed at one end of the inflator 100 is first fitted to the rotation restraining pin 220 and then the other end of the inflator 100 is elastically And slid down through the inclined portion of the support pin 230 to be resiliently seated. When the inflator 100 descends, it is necessary to dimension the elastic support pin 230 so that the other end of the inflator 100 passes through the elastic support pin 230 as if it is slightly hooked. When the inflator 100 is inserted into the inflator housing 200 by a continuous operation, the inflator 100 is not detached from the inflator housing 200 by being coupled with the click sound in a one-touch manner.

As described above, since the rotation restraining fin 220 is completely inserted into the fitting groove 110, the chamber is not changed in direction in the inflator 100 having two chambers as shown in FIG.

A reference numeral 240, which is not described, is a fastening hole to which a cushion retainer (not shown) is coupled.

6A and 6B, the rotation restraining pin 220 and the elastic supporting pin 230 may be formed by cutting off the middle portion of the groove 210 formed in the inflator housing 200. As shown in FIGS.

As shown in the figure, the cushion retainer 500 is coupled to the inflator housing 200 while covering the upper portion of the inflator 100.

6A and 6B, the positions of the gas discharge holes 120 are different according to the type of the vehicle, and the rotation restraining pins 220 and the elastic support pins 230 of the present invention are used to separate the gas discharge holes 120, It is possible to precisely cope with the positional change of the battery 120.

According to the present invention having the above-described structure, when the inflator having two chambers is coupled to the inflator housing, the direction of the chamber is not changed and assembled, so that a predetermined injection direction can be maintained from the inflator.

In addition, according to the present invention, if the position of the rotation restraining pin is changed only along the perimeter of the slot, the spray angle of the inflator can be exactly matched to the type of the vehicle.

Further, according to the present invention, since the inflator is firmly assembled by the rotation restraining pin and the elastic supporting pin, the subsequent assembling work can be further easily performed.

Claims (7)

A coupling structure between an inflator of a passenger's seat airbag which is generally cylindrical and an inflator housing having a groove for receiving the inflator, A rotation restraining pin and an elastic support pin protrude toward the central axis of the inflator on an extension line of the elongated groove or the groove of the inflator housing, And an inflator coupling structure of the passenger-side airbag is formed at one end of the inflator with a fitting groove into which the rotation restraining pin is fitted. The method according to claim 1, And the rotation restraining pin is bent toward the elastic support pin. The method according to claim 1, Wherein the resilient support pin is bent toward the rotation restraining pin and then continuously extended toward the central axis of the inflator. The method of claim 3, Wherein an end portion of an elastic support pin formed to extend toward an axial center of the inflator is inclined toward an end portion of the inflator. The method according to claim 1, Wherein the rotation restraining pin is vertically bent toward the elastic supporting pin and the elastic supporting pin is bent toward the rotation restraining pin and then continuously extended toward the axial center of the inflator and then inclined toward the end of the inflator. Inflator coupling structure of passenger airbag. 6. The method according to any one of claims 1 to 5, Wherein the rotation restraining pin is changeable along the rim of the groove. 6. The method according to any one of claims 1 to 5, Wherein the resilient support pin is positionally changeable along the rim of the groove.

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