KR20040079253A - Passenger air bag for car - Google Patents

Abstract

PURPOSE: A passenger airbag for a vehicle is provided to prevent the injury of a passenger by dispersing the pressure applied to a main panel toward side panels. CONSTITUTION: A passenger airbag for a vehicle is composed of a main panel(2) having an inflator hole(5), side panels(3) coupled to both sides of the main panel, an upper tether(11) attached to the top of the main panel when an airbag cushion is inflated, a lower tether(12) attached to the bottom of the main panel, and velcros(14,15) formed at the upper and lower tethers and supporting the center of the main panel.

Description

Passenger air bag for car {Passenger air bag for car}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger seat airbag for automobiles, and in particular, the front face of the passenger is not fully deployed at the beginning of the airbag cushion deployment, thereby preventing passenger injury from impacts on the passenger's face and other body parts at the beginning of the deployment. It relates to a passenger front passenger airbag.

In the event of a car collision, the inertia of the passenger is suddenly leaned forward, and in some cases, the upper body of the passenger may hit the instrument panel and serious injury may occur.

In order to prevent such injuries, in recent years, airbags are installed in the instrument panel to be deployed during a frontal collision to promote passenger safety.

The airbag is composed of an inflator with a gunpowder embedded therein, an airbag cushion deployed by the air expanding when the explosive is exploded in the inflator, a door assembly opened when the airbag cushion is deployed, and a housing assembly with the inflator built therein.

The airbag cushion is composed of a main panel and a side panel.

In addition, the inside of the airbag cushion is provided with an internal tether connected to the fixed bar in the main panel and the inflator to maintain the airbag shape when fully deployed.

Therefore, when a collision with a certain intensity or more occurs, an operation signal from the airbag controller activates the detonator inside the inflator through a wire to explode the gunpowder, thereby inflating the airbag cushion by the inflation force of the airbag to support the upper body of the passenger. Will be prevented.

Recently, the instrument panel integrated type, in which the passenger seat airbag door is integrally formed on the instrument panel, has become mainstream, and the deployment shape of the door appears to the outside for consumers to reduce anxiety and freedom of design due to the airbag. Invisible Tear-Seam type comes up.

However, in the current technology, it is difficult to satisfy the passenger seat airbag deployment performance for abnormal seating passengers, and also, in order to satisfy the performance, a considerable test cost and other auxiliary devices such as a passenger sensor or a seat position sensor are used.

In addition, new legislation in North America has recently enacted the satisfaction of injury performance in passengers' out of position (OOP) seats, so that the passenger seat airbag is not only inherently self-deploying, but also does not injure passengers during deployment. Requires safe design and development.

On the other hand, the time for the upper body of the passenger to lean in a crash is very short, so the deployment of the airbag is instantaneously within a much faster time.

However, in the case of a passenger accident such as a frontal collision in the OOP posture, the deployment speed of the airbag is too fast, and the main panel of the airbag cushion protrudes rapidly toward the passenger at the beginning of deployment, so that the airbag cushion deployment pressure is increased. Passed directly to the passenger's bow to hit the face, rather than the passenger's neck was flipped back, causing a serious injury.

In addition, the airbag cushion having a conventional internal tether is thrown out of the airbag cushion by a sudden impact such as a punch out force, there is a disadvantage that can not protect the passenger safely.

The present invention has been made to solve the above-mentioned problems, the overall deployment of the airbag cushion is fully deployed to support the upper body of the passenger quickly, the pressure applied to the passenger face response area (main panel) of the airbag cushion at the beginning of deployment Passenger's front passenger airbag that can be temporarily distributed to both ends (side panels) to delay the expansion of the face-response area, thereby preventing the passenger's face shock from the airbag and preventing injury to the passenger's face and other body parts. The purpose is to provide.

1 is a plan view showing a passenger seat airbag cushion for automobiles of the present invention,

FIG. 2 is a perspective view of the upper and lower external tethers of FIG. 1 coupled thereto; FIG.

3 is a cross-sectional view taken along line A-A of FIG.

4 is a deployment process diagram of a passenger seat airbag according to the present invention;

Figure 5 is a plan view showing a passenger seat airbag cushion of another embodiment of the present invention,

6 is a perspective view of the upper and lower outer tethers of FIG. 5 are combined;

FIG. 7 is a sectional view taken along line B-B in FIG. 6; FIG.

<Description of the symbols for the main parts of the drawings>

1: Airbag Cushion, 2: Main Panel,

3: side panel, 4: housing assembly,

5: inflator hole, 6: vent hole,

11: upper outer tether, 12: lower outer tether,

13,14,15: Velcro, 20: wing,

21: (wing) Velcro.

In order to achieve the above object, the passenger seat airbag of the present invention includes a main panel having an inflator hole formed at one side thereof when deployed; A side panel for sealing a side of the main panel; An upper outer tether having one side attached to an upper portion of the main panel with respect to the inflator hole when an airbag cushion is inflated; A lower outer tether having one side attached to a lower portion of the main panel; The upper outer tether and the lower outer tether includes a velcro formed on each other side to surround and support the deployment center of the main panel.

The upper and lower portions of the upper and lower outer tethers indicate the upper and lower portions when the passenger seat airbag cushion is inflated, respectively.

The upper and lower outer tethers are attached to the main panel of the airbag cushion using sewing or adhesives.

The velcro is formed on each of the upper outer tether and the lower outer tether, and the upper and lower outer tethers are stacked and combined to surround the deployment center of the main panel.

In this way, when the airbag cushion is deployed, the velcro initially distributes the pressure applied to the deployment center of the main panel in the side panel direction so that both ends are developed first, and then the velcro is separated to deploy the entire airbag cushion. do.

And, if a stronger coupling force is required for the velcro, the wing portion formed with a velcro is further provided on the other side of any one of the upper outer tether and the lower outer tether, the other side of the outer tether Velcro on both sides Forming and stacking the multiple deployment center portion of the main panel multiple.

At this time, the wing is preferably formed on both sides of the outer tether.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a plan view showing a passenger seat airbag cushion 1 for a vehicle of the present invention, Figure 2 is a perspective view of the upper and lower outer tethers (11, 12) of Figure 1 coupled by Velcro (13, 14), 3 is a cross-sectional view taken along line AA of FIG. 2.

As shown in Figs. 1 to 3, the passenger seat airbag of the present invention includes a main panel 2 and a side panel 3 of the airbag cushion 1; Upper and lower outer tethers 11 and 12 attached to the main panel 2; The upper outer tether 11 and the lower outer tether 12 is composed of a Velcro (13, 14).

The main panel 2 of the airbag cushion 1 refers to a surface in contact with the passenger in the event of a collision, and the side panel 3 refers to a surface sealing in contact with both sides of the main panel 2.

In addition, when the main panel 2 is deployed, that is, when the main panel 2 is deployed, an inflator hole 5 through which the gas generated from the inflator flows is formed, and the pressure of the gas introduced into the airbag cushion 1 is adjusted. To this end, the side panel 3 is provided with a plurality of vent holes 6.

In the state of sewing the main panel and the side panel to form an airbag cushion, the upper and lower outer tether (11, 12) is one side of the upper plate and the main panel (2) around the inflator hole (5) It is attached to the lower part respectively.

In this case, a method of attaching the upper and lower outer tethers 11 and 12 to the main panel 2 uses sewing or adhesive.

The velcro 13, 14 is called a squeaker or adhesive tape, the elastic hook (hook) surface and the oval-shaped loop (loop) surface is bonded to each other by bonding.

The Velcros 13 and 14 are formed to have hook surfaces and loop surfaces on the other sides of the upper outer tether 11 and the lower outer tether 12, respectively, so as to surround the deployment center of the main panel 2. To be combined.

At this time, the Velcro 13, 14 should be formed on the surface of the upper outer tether 11 and the lower outer tether 12 in contact with each other so as to surround the support center portion of the main panel (2).

In addition, the Velcro (13, 14) is a part of the surface according to the purpose of the hook structure and the remaining part is made of a loop structure, can be used to maximize the adhesive strength for industrial or special operations.

The upper and lower outer tethers 11 and 12 apply pressure to the deployment center of the main panel 2, which is the face corresponding part of the passenger, when the airbag cushion 1 is deployed by the Velcros 13 and 14. By temporarily dispersing to both ends, the airbag cushion 1 is enclosed with the deployment center of the main panel 2 in order to delay the expansion of the deployment center for a predetermined time so that both ends are deployed first.

At this time, the upper and lower outer tethers (11, 12) is to surround only the deployment center portion of the main panel (2), not to surround the entire airbag cushion (1), the pressure is distributed to the unenclosed portion of the deployment center portion It is preferable that the unwrapped portion, that is, both ends (side panel), should be expanded first.

The upper and lower outer tethers 11 and 12 thus combined are separated by the deployment pressure inside the airbag cushion 1 when a predetermined time or a constant deployment (about 50% of deployment) is performed, and the entire airbag cushion 1 is deployed. Be sure to

This delays the expansion of the center of deployment of the main panel 2 at the beginning of deployment, leading the cushion 1 deployment direction to both ends, whereby the passenger's face and other body parts are injured by airbag deployment pressure. Can be prevented.

In addition, the upper and lower outer tethers (11, 12) to wrap the other portion other than the deployment center portion of the airbag cushion (1), the shape of the initial deployment of the airbag cushion (1) according to the portion for preventing shock It can be used in various modifications.

That is, when the airbag cushion 1 requires to be deployed in the vertical direction at the beginning of the deployment, the upper and lower outer tethers 11 and 12 surround the airbag cushion 1 in the left and right directions, In the case where the airbag cushion 1 is required to be deployed in the left and right directions at the beginning of deployment, the upper and lower outer tethers 11 and 12 surround the airbag cushion 1 in the up and down direction so as to cover the airbag cushion 1. Can satisfy.

The upper and lower outer tethers 11 and 12 may be installed in a plurality of directions to prevent injuries of passengers.

Figure 4 is a view from above of the deployment process of the passenger seat airbag according to the present invention.

FIG. 4 (a) shows that the upper and lower outer tethers 11 and 12, which are mounted before the passenger seat airbag for the vehicle according to the present invention is deployed, surround the airbag cushion 1, and FIG. 4 (b) Indicates that the deployment center portion of the airbag cushion 1 is suppressed by the Velcro 13 and 14 of the upper and lower outer tethers 11 and 12 at the initial deployment, so that the pressure is distributed to the left and right ends.

4 (c) shows a predetermined pressure applied to the airbag cushion 1 so that the velcros 13 and 14 of the upper and lower outer tethers 11 and 12 are separated and the airbag cushion 1 is deployed. 4 (d) shows that the airbag cushion 1 is fully deployed.

Here, the development timing which affects the OOP performance is when FIG. 4 (b).

In order to accelerate the development timing, the coupling force of the velcro 13 and 14 of the upper and lower external tethers 11 and 12 is weakened to be released even at a weak expansion pressure, and the upper and lower external tethers may be used to delay the development timing. The coupling force of the velcro 13, 14 of 11, 12 is strengthened to be separated by a strong expansion pressure.

5 is a plan view showing a passenger seat airbag cushion of another embodiment of the present invention, Figure 6 is a perspective view of the upper and lower outer tethers (11, 13) of Figure 5 is combined, Figure 7 is taken in line BB of Figure 6 This is a cross-sectional view.

As shown in FIGS. 5 to 7, when a stronger bonding force is required for the upper and lower outer tethers 11 and 12, the wing 20 is further installed on the other side of the lower outer tether 12. And, the other side of the upper outer tether 11 is provided with velcro (13, 15) on both sides.

At this time, the wing portion 20 has a separate Velcro (21, hereinafter wing Velcro) is formed.

Looking at the coupling method, the Velcro 14 of the lower outer tether 12 and the Velcro 13 of the upper outer tether 11 are first coupled to surround the deployment center of the main panel 2, and the wings 20 so as to surround the upper outer tether 11 so that the wing Velcro 21 and the Velcro 15 of the other side of the upper outer tether are coupled.

In this way, a stronger bonding force of the upper and lower outer tethers 11 and 12 can be obtained.

If it is necessary to obtain a stronger bonding force than this, it can be obtained by lengthening the wing portion 20 to both sides to laminate the wing portions 20 formed on both sides.

At this time, the Velcro 21 should be formed on both sides of the wing portion 20, like the upper outer tether 11.

The length of the velcro 13 and 14 of the upper and lower outer tethers 11 and 12 may be lengthened without doing as described above in order to strengthen the coupling force. However, the length of the velcro 13 and 14 may be increased. The lengths of the upper and lower outer tethers 11 and 12 are also required to be longer, and the upper and lower outer tethers 11 and 13 are separated due to the state as shown in FIG. 4 (c), that is, the deployment of the airbag cushion 1. When the upper and lower outer tethers 11 and 12 are too long, there is a risk of injury to the driver's face due to the fluctuations of the upper and lower outer tethers 11 and 12.

Therefore, when strong bonding force is required for the upper and lower outer tethers 11 and 12, it is preferable to use upper and lower outer tethers 11 and 12 having the wing portion 20 of the present invention.

The passenger seat airbag for an automobile of the present invention is not limited to the above-described embodiment, and can be variously modified and implemented within the range permitted by the technical idea of the present invention.

According to the passenger seat airbag for automobiles of the present invention as described above has the following effects.

First, by restraining the direction in the front direction of the passenger due to the adjustment of the cushion deployment pressure in the early stage of deployment of the airbag cushion, there is an effect that can reduce the injury caused by the airbag of the OOP posture passenger.

Second, by allowing the upper and lower outer tether to surround and support the deployment center of the main panel, the pressure applied to the deployment center of the main panel during the initial deployment of the airbag cushion temporarily distributes to the side panel, By delaying the expansion of the center of deployment, there is an effect of eliminating the risk of injury to the passenger from accidental impacts such as punch out force applied to the face and other body parts of the passenger at the beginning of deployment.

In addition, the Velcro formed on the other side of the upper and lower outer tether is separated after a predetermined time (after about 50% deployment) to suppress the expansion of the center portion of the deployment of the main panel only at the beginning of deployment, and at the end of deployment the entire airbag cushion is inflated. As it is deployed, it is possible to quickly support the upper body of the passenger to prevent the impact.

Third, since it is easy to variously adjust the strength of the adhesive force according to the width of the Velcro, there is an effect that it is possible to variously control the deployment timing of the airbag cushion according to the passenger.

Fourth, by installing a wing portion with a wing Velcro, it can be used when the bonding force of the upper and lower outer tether is strongly required.

Although the length of the velcro of the upper and lower outer tethers may be increased in order to strengthen the coupling force of the upper and lower outer tethers, this requires the length of the upper and lower outer tethers to be as long as the length of the velcro, and the airbag cushion When the upper and lower outer tethers are separated due to the development of the upper and lower outer tethers, the length of the upper and lower outer tethers becomes too long, which may injure the driver's face due to the shaking of the upper and lower outer tethers. The use of an external tether formed by the wing has the effect of preventing the risk of injury as well as a strong bonding force.

Fifth, by forming the wing portion on both sides, the upper outer tether and the lower outer tether can be separated more easily, and when the stronger bonding force of the upper and lower outer tether is required, the wings are laminated There is an effect that can be obtained by combining.

Claims (3)

A main panel on which an inflator hole is formed; A side panel for sealing a side of the main panel; An upper outer tether having one side attached to an upper portion of the main panel with respect to the inflator hole when an airbag cushion is inflated; A lower outer tether having one side attached to a lower portion of the main panel; The upper outer tether and the lower outer tether is made to include a velcro (velcro) formed on each other side so as to surround the support center portion of the main panel, When deploying the airbag cushion, both side ends are first developed by distributing the pressure applied to the center of deployment of the main panel by the Velcro to the side panel, and then the Velcro is separated and the whole is developed. Car passenger airbags. The method of claim 1, The other side of the outer tether of the upper outer tether and the lower outer tether is further formed with a wing portion formed with velcro, the other side of the outer tether is formed with velcro on both sides, the center portion of the airbag cushion Car driver's seat airbag, characterized in that. The method of claim 2, The wing portion of the vehicle driver's seat, characterized in that formed on both sides of the other side of the outer tether.