KR102656681B1 - Trim airbag for vehicle - Google Patents

Abstract

An interior trim part where the upper and lower parts are coupled to the car body panel and the front and rear parts are spaced apart to form a chamber space inside, the front part facing the interior space and the rear part facing the car body panel; and an airbag cushion unit that is built inside the chamber space and, when deployed, expands toward the vehicle body panel through the rear portion of the interior trim portion, expands between the interior trim portion and the vehicle body panel, and causes the interior trim portion to protrude toward the interior space. Trim airbag is introduced.

Description

Trim airbag for vehicles {TRIM AIRBAG FOR VEHICLE}

The present invention relates to a trim airbag for a vehicle that protects occupants in the interior space of the vehicle by deploying between the interior trim portion of the vehicle and the body panel.

Generally, an airbag device is installed inside a vehicle to protect occupants in the event of a vehicle collision. The airbag device protects the occupants by injecting gas into the airbag cushion through an inflator during a vehicle collision, thereby deploying the airbag cushion into the interior space of the vehicle and absorbing the impact of the occupants.

Most of the airbag devices in the trim part of conventional vehicles were deployed between the trim part and the body panel to the windshield side of the vehicle. In this case, it had the advantage of acting as a buffer to protect the front, rear, and sides of the occupants, while also reducing the possibility of injury to the occupants due to the windshield breaking.

However, even with such a trim portion airbag device, there is a problem in that the cushion that can cushion the vehicle is not deployed in the trim portion of the vehicle, so that when an occupant collides with the trim portion of the vehicle, the impact is not alleviated and the occupant receives the impact as is.

Therefore, even if it is a trim airbag for a vehicle, a new trim airbag for a vehicle is needed to solve this problem.

The matters described as background technology above are only for the purpose of improving understanding of the background of the present invention, and should not be taken as recognition that they correspond to prior art already known to those skilled in the art.

10-0632605 B1

The present invention was proposed to solve this problem, and aims to provide a trim airbag for a vehicle that protects occupants in the interior space of the vehicle by deploying between the interior trim portion of the vehicle and the body panel.

The trim airbag for a vehicle according to the present invention to achieve the above object,

An interior trim part where the upper and lower parts are coupled to the car body panel and the front and rear parts are spaced apart to form a chamber space inside, the front part facing the interior space and the rear part facing the car body panel; and an airbag cushion unit that is built inside the chamber space and, when deployed, expands toward the vehicle body panel through the rear portion of the interior trim section, expands between the interior trim section and the vehicle body panel, and causes the interior trim section to protrude toward the interior space. there is.

When the airbag cushion is deployed, the airbag cushion is deployed between the interior trim portion and both sides of the car body panel, so that the airbag cushion portion can be deployed toward the windshield disposed on both sides of the interior trim portion.

The lower part of the interior trim part is fixed and coupled to the car body panel, and when the airbag cushion part is deployed, the lower part of the indoor trim part is fixed to the car body panel, and the upper part of the indoor trim part may protrude toward the interior space.

It may further include a fixed tether that is connected to the airbag cushion unit and the vehicle body panel and limits the amount of movement in which the upper part of the interior trim unit protrudes toward the interior space by limiting the deployment of the airbag cushion unit when the airbag cushion unit is deployed.

A tether passage hole is formed through one side of the rear part of the interior trim part, and a fixed tether is placed in the tether passage hole so that one end and the other end can be connected to the airbag cushion part and the car body panel, respectively.

The fixed tether is stored inside the interior trim part with a spare length, and when the airbag cushion part is deployed, the fixed tether is unfolded and then the airbag cushion part is pulled, thereby limiting the amount of movement in which the upper part of the indoor trim part protrudes toward the indoor space.

A cut line is formed in the rear part of the interior trim part, and the cut line in the rear part of the interior trim part is cut by the deployment pressure when the airbag cushion part is deployed, so that the airbag cushion part can be deployed towards the car body panel through the rear part of the interior trim part.

The cut line consists of a pair of horizontal cut lines extending left and right from the top and bottom of the rear part of the interior trim part and a vertical cut line connecting the middle of the pair of horizontal cut lines, and when the airbag cushion part is deployed, the rear part of the interior trim part It can be opened and spreads left and right based on the vertical incision line.

A fixing tab is provided on the upper part of the interior trim part, and the car body panel and the fixing tab are mounted so that the upper part of the interior trim part and the car body panel are fixed. When the airbag cushion part is deployed, the fixing tab slides so that the upper part of the interior trim part protrudes toward the interior space. .

A slot hole with an open upper part of the fixing tab is formed in the fixing tab, and when the airbag cushion part is deployed, the fixing tab of the interior trim part slides along the slot hole, so that the upper part of the interior trim part can protrude toward the indoor space.

A fixing tab is provided on the upper part of the interior trim part, and the body panel and the fixing tab are mounted so that the upper part of the interior trim part and the car body panel are fixed. A break line is formed at the bottom of the fixing tab, and the break line of the fixing tab is formed when the airbag cushion part is deployed. By breaking, the upper part of the interior trim may protrude toward the interior space.

The interior trim portion and the airbag cushion portion may be disposed on the vehicle headlining or vehicle pillar portion.

The front and rear parts of the interior trim part can be molded integrally through blow molding.

According to the trim airbag for a vehicle of the present invention, it is possible to protect occupants in the interior space of the vehicle by deploying between the interior trim portion of the vehicle and the body panel.

In particular, there is an advantage that the interior trim portion can alleviate a collision by deploying the airbag cushion between the interior trim portion and the vehicle body panel.

1 is a diagram showing a deployed state of a trim airbag for a vehicle according to an embodiment of the present invention.
Figure 2 is a view showing the front portion of the interior trim portion of a trim airbag for a vehicle according to an embodiment of the present invention.
Figure 3 is a view showing the rear portion of the interior trim portion of a trim airbag for a vehicle according to an embodiment of the present invention.
Figure 4 is a cross-sectional view cut along line AA in a state where the airbag cushion portion is not deployed.
Figure 5 is a cross-sectional view cut along line AA with the airbag cushion portion deployed.
Figure 6 is a cross-sectional view cut along line BB with the airbag cushion portion deployed.
Figure 7 is a diagram showing a fixing tab of the interior trim portion of a trim airbag for a vehicle according to an embodiment of the present invention.
Figure 8 is a view showing a fixing tab of the interior trim part of a trim airbag for a vehicle according to another embodiment of the present invention.

FIG. 1 is a view showing a deployed state of a trim airbag for a vehicle according to an embodiment of the present invention, FIG. 2 is a view showing the front portion of the interior trim portion of a trim airbag for a vehicle according to an embodiment of the present invention, and FIG. 3 is a view showing the front portion of the interior trim portion of the trim airbag for a vehicle according to an embodiment of the present invention. It is a diagram showing the rear part of the interior trim part of a trim airbag for a vehicle according to an embodiment of the present invention, Figure 4 is a cross-sectional view cut along line A-A with the airbag cushion part not deployed, and Figure 5 is a diagram with the airbag cushion part deployed. It is a cross-sectional view cut along line A-A, Figure 6 is a cross-sectional view cut along line B-B with the airbag cushion part deployed, and Figure 7 is a diagram showing the fixing tab of the interior trim part of the trim airbag for a vehicle according to an embodiment of the present invention. , FIG. 8 is a diagram showing a fixing tab of the interior trim portion of a trim airbag for a vehicle according to another embodiment of the present invention.

As shown in Figures 1 to 6, the upper and lower parts of the trim airbag for a vehicle according to the present invention are coupled to the body panel (P), and the front part 120 and the rear part 140 are spaced apart to form a chamber space 130 inside. , the interior trim portion 100 with the front portion 120 facing the interior space (S) and the rear portion 140 facing the vehicle body panel (P); and is built into the chamber space 130, and when deployed, is deployed toward the vehicle body panel (P) through the rear portion 140 of the interior trim portion 100, thereby forming a space between the interior trim portion 100 and the vehicle body panel (P). It includes an airbag cushion part 200 that is inflated and causes the interior trim part 100 to protrude toward the interior space (S).

2 to 4, the trim airbag for a vehicle of the present invention is provided with an interior trim portion 100. The front part 120 and the rear part 140 of the interior trim part 100 are spaced apart from each other to form a chamber space 130 therein, and an airbag cushion part 200 is built into the chamber space 130. FIG. 2 is a diagram showing the front part 120 of the interior trim part 100, and FIG. 3 is a diagram showing the rear part 140 of the interior trim part 100. The front part 120 and the rear part 140 of the interior trim part 100 are connected at the top and bottom, respectively, and a chamber space 130 is formed between the front part 120 and the rear part 140 as shown in FIG. 4. will be. Meanwhile, the upper and lower parts of the interior trim part 100 are each coupled to the car body panel (P), so that when the airbag cushion part 200 is deployed, the airbag cushion part 200 is preferentially connected to the car body panel (P) through the rear part 140. ) is deployed to the side. And, as shown in FIG. 4, when the airbag cushion part 200 is expanded between the rear part 140 of the interior trim part 100 and the car body panel P and the airbag cushion part 200 is supported by the car body panel P, the interior trim part 100 It protrudes toward the indoor space (S).

Conventional vehicle trim airbags are deployed from the trim portion and deploy only to the outside of the trim portion, so the trim itself cannot alleviate the impact.

However, in the trim airbag for a vehicle of the present invention, the airbag cushion portion 200 is deployed between the interior trim portion 100 and the vehicle body panel (P), so that the interior trim portion 100 has a shock absorbing action to relieve shock. There are advantages to doing this.

And, as shown in FIG. 6, the trim airbag for a vehicle of the present invention deploys the airbag cushion portion 200 between both sides of the interior trim portion 100 and the vehicle body panel (P) when the airbag cushion portion 200 is deployed, thereby creating an airbag cushion. The part 200 may be deployed toward the windshield W disposed on both sides of the interior trim part 100. Although the windshield (W) is not shown in Figure 6, it represents the section where the windshield (W) is placed.

In this way, after the airbag cushion portion 200 of the vehicle trim airbag is deployed between the interior trim portion 100 and the vehicle body panel (P), the windshield is formed between both sides of the interior trim portion 100 and the vehicle body panel (P). By deploying to the (W) side, a section that protects the occupants is formed on the windshield (W) side as well. Ultimately, even if the occupant is thrown towards the windshield (W), the occupant is protected, and at the same time, even if the windshield (W) is broken, the airbag cushion unit 200 prevents the broken pieces of the windshield (W) from causing injury to the occupant. There is an advantage to preventing it.

In addition, the airbag cushion part 200 is deployed on the windshield (W) side, and the airbag cushion part 200 is deployed between the interior trim part 100 and the car body panel (P), so the part that protects the occupants is connected. It has the advantage of protecting occupants more effectively.

And, as shown in Figures 4 and 5, the lower part of the interior trim portion 100 of the trim airbag for a vehicle of the present invention is fixed and coupled to the vehicle body panel (P), and when the airbag cushion portion 200 is deployed, the interior trim portion 100 The lower portion is fixed to the vehicle body panel (P), and the upper portion of the interior trim portion 100 may protrude toward the interior space (S).

Looking at Figures 4 and 5, the lower part of the interior trim part 100 is fixed to the vehicle body panel (P) through the airbag cushion part 200 connected to the inflator (I). Therefore, as shown in FIG. 5, when the airbag cushion unit 200 is deployed, the lower part of the indoor trim part 100 is fixed, and the upper part of the indoor trim part 100 can protrude toward the indoor space (S).

And, as shown in Figures 4 and 5, the trim airbag for a vehicle of the present invention is connected to the airbag cushion part 200 and the vehicle body panel (P), and when the airbag cushion part 200 is deployed, the airbag cushion part 200 is deployed. It may further include a fixed tether 300 that limits the amount of movement by which the upper part of the indoor trim part 100 protrudes toward the indoor space (S). Specifically, a tether passage hole 145 is formed that penetrates one side of the rear portion 140 of the interior trim portion 100, and the fixed tether 300 is disposed in the tether passage hole 145 so that one end and the other end are respectively airbag cushions. It may be connected to the unit 200 and the vehicle body panel (P). If the fixed tether 300 is not provided, when the airbag cushion part 200 is deployed, the upper part of the interior trim part 100 may protrude excessively toward the interior space (S), causing injury to the occupants. Therefore, in order to solve this problem, the present invention provides a fixing tether 300 so that the upper part of the interior trim part 100 protrudes only by the necessary amount when the airbag cushion part 200 is deployed.

Looking more specifically, the fixed tether 300 is stored inside the interior trim part 100 with a spare length, and when the airbag cushion part 200 is deployed, the fixed tether 300 is unfolded and then the airbag cushion part 200 By pulling, it is possible to limit the amount of movement in which the upper part of the interior trim portion 100 protrudes toward the interior space (S). In this way, the spare length of the fixed tether 300 inside the interior trim portion 100 can be set variously according to the size or structure of the vehicle, so that the interior trim portion 100 can be adjusted to properly protrude toward the interior space (S). There are advantages to this.

And, as shown in FIG. 3, a cut line 160 is formed on the rear portion 140 of the interior trim portion 100, and when the airbag cushion portion 200 is deployed, the rear portion 140 of the interior trim portion 100 is damaged by the deployment pressure. As the cut line 160 is cut, the airbag cushion part 200 can be deployed toward the vehicle body panel (P) through the rear part 140 of the interior trim part 100.

Looking more specifically, the cut line 160 includes a pair of horizontal cut lines 165 extending left and right from the upper and lower sides of the rear portion 140 of the interior trim portion 100 and a pair of horizontal cut lines 165. It consists of a vertical cut line (170) connecting the middle part of the airbag cushion part (200), and when the airbag cushion part (200) is deployed, the rear part (140) of the interior trim part (100) can be opened by spreading to the left and right based on the vertical cut line (170). there is.

In this way, by forming the cut line 160 on the rear part 140 of the interior trim part 100, the cut line 160 is cut when the airbag cushion part 200 is deployed, thereby allowing the airbag cushion part 200 to be opened through the rear part 140. There is an advantage that it becomes easier to deploy to the car body panel (P) side. In addition, it expands to the left and right based on the vertical cut line 170, and the rear portion 140 of the interior trim portion 100 is opened, thereby causing the airbag cushion portion 200 to be expanded toward the windshield (W) as shown in FIG. There are advantages to this.

Such an incision line 160 may be of a dot shape in which each dotted line penetrates, or a notch shape in which only a portion of the dotted line is grooved, but is not limited thereto.

In addition, as shown in FIGS. 3 to 5 and 7, in the case of the trim airbag for a vehicle of the present invention, a fixing tab 180 is provided on the upper part of the interior trim part 100, and the body panel (P) and the fixing tab 180 are mounted to secure the interior. The upper part of the trim part 100 and the car body panel (P) are fixed, and when the airbag cushion part 200 is deployed, the fixing tab 180 slides so that the upper part of the interior trim part 100 protrudes toward the interior space (S). It can be.

4 and 5 show that the fixing tab 180 provided on the top of the interior trim part 100 is coupled (B) to the car body panel (P) by bolting, but the coupling method is not limited to this.

When the airbag cushion portion 200 is not deployed, the interior trim portion 100 does not need to protrude toward the interior space (S), so the upper portion of the interior trim portion 100 is attached to the vehicle body panel (P) through the fixing tab 180. are combined. On the contrary, when the airbag cushion part 200 is deployed, the fixing tab 180 slides to induce the upper part of the interior trim part 100 to protrude toward the interior space (S).

Looking more specifically, the fixing tab 180 is formed with a slot hole 185 in which the upper part of the fixing tab 180 is open, and when the airbag cushion part 200 is deployed, the fixing tab of the interior trim part 100 ( As 180) slides along the slot hole 185, the upper part of the interior trim portion 100 may protrude toward the interior space (S). The upper part of the fixing tab 180 in FIG. 7 is opened to form a slot hole 185, and the upper part of the fixing tab 180 remaining on both sides of the slot hole 185 is bolted to the car body panel (P) (B). Then, when the airbag cushion part 200 is deployed, the upper part of the interior trim part 100 slides along the slot hole 185 due to the force of the airbag cushion part 200 expanding.

In addition, as shown in FIGS. 3 to 5 and 8, a fixing tab 180 is provided on the upper part of the interior trim part 100 of the present invention, and the car body panel (P) and the fixing tab 180 are mounted to secure the interior trim part 100. The upper part of and the car body panel (P) are fixed, and a break line 190 is formed at the bottom of the fixing tab 180. When the airbag cushion part 200 is deployed, the break line 190 of the fixing tab 180 is formed. By being broken, the upper part of the indoor trim portion 100 may protrude toward the indoor space (S).

And, as shown in Figure 1, the interior trim part 100 and the airbag cushion part 200 of the present invention may be placed in the vehicle headlining or vehicle pillar part. It can be placed on the A-pillar of a vehicle and deployed to the front windshield and the windshield on the front seat side. It can be placed on the B-pillar of a vehicle and deployed on the front and rear seat-side windshield. It can be placed on the C-pillar of a vehicle, etc. and deployed on the rear windshield. It can be deployed to the rear seat side and windshield side. In addition, it has the advantage of protecting occupants in all directions by being placed on the headlining that makes up the ceiling of the vehicle and being deployed to the front windshield and rear windshield, or to the front and rear windshields, depending on the installation direction.

And, as shown in Figure 2, the front part 120 and the rear part 140 of the interior trim part 100 of the trim airbag for a vehicle of the present invention can be molded integrally through blow molding. By forming an integrated structure through blow molding, there is an advantage in that rigidity is increased at the point where the front part 120 and the rear part 140 of the interior trim part 100 are connected.

According to the trim airbag for a vehicle of the present invention, it is possible to protect occupants in the interior space of the vehicle by deploying between the interior trim portion of the vehicle and the body panel.

In particular, there is an advantage that the interior trim portion can alleviate a collision by deploying the airbag cushion between the interior trim portion and the vehicle body panel.

Although the present invention has been shown and described in relation to specific embodiments, it is known in the art that various improvements and changes can be made to the present invention without departing from the technical spirit of the present invention as provided by the following claims. This will be self-evident to those with ordinary knowledge.

100: Interior trim part 200: Airbag cushion part
300: Fixed tether P: Body panel
S: indoor space

Claims (13)

An interior trim part where the upper and lower parts are coupled to the car body panel and the front and rear parts are spaced apart to form a chamber space inside, the front part facing the interior space and the rear part facing the car body panel; and
It is built inside the chamber space, and when deployed, it is deployed toward the car body panel through the rear part of the interior trim part, so that it expands between the interior trim part and the car body panel, and causes the interior trim part to protrude toward the interior space; It includes;
A trim airbag for a vehicle, wherein the lower portion of the interior trim portion is fixed and coupled to the vehicle body panel, and when the airbag cushion portion is deployed, the lower portion of the interior trim portion is fixed to the vehicle body panel and the upper portion of the interior trim portion protrudes toward the interior space. In claim 1,
A trim airbag for a vehicle, characterized in that when the airbag cushion is deployed, the airbag cushion is deployed between the interior trim portion and both sides of the car body panel, and the airbag cushion portion is deployed toward the windshield disposed on both sides of the interior trim portion. delete In claim 1,
A fixed tether connected to the airbag cushion unit and the vehicle body panel, and limiting the amount of movement in which the upper part of the interior trim unit protrudes toward the interior space by limiting the deployment of the airbag cushion unit when the airbag cushion unit is deployed. A trim for a vehicle further comprising a. airbag. In claim 4,
A trim airbag for a vehicle, characterized in that a tether passage hole is formed penetrating one side of the rear part of the interior trim part, and a fixed tether is placed in the tether passage hole and one end and the other end are connected to the airbag cushion part and the car body panel, respectively. In claim 5,
The fixed tether is stored inside the interior trim part with a spare length, and when the airbag cushion part is deployed, the fixing tether is unfolded and then the airbag cushion part is pulled to limit the amount of movement in which the upper part of the interior trim part protrudes toward the interior space. Trim airbag. In claim 1,
A cut line is formed in the rear part of the interior trim part, and the cut line in the rear part of the interior trim part is cut by the deployment pressure when the airbag cushion part is deployed, so that the airbag cushion part is deployed towards the car body panel through the rear part of the interior trim part. airbag. In claim 7,
The cut line consists of a pair of horizontal cut lines extending left and right from the top and bottom of the rear part of the interior trim part and a vertical cut line connecting the middle of the pair of horizontal cut lines, and when the airbag cushion part is deployed, the rear part of the interior trim part A trim airbag for a vehicle, characterized in that it expands and opens left and right based on a vertical cut line. In claim 1,
A fixing tab is provided on the upper part of the interior trim part, and the body panel and the fixing tab are mounted to fix the upper part of the interior trim part and the car body panel. When the airbag cushion part is deployed, the fixing tab slides so that the upper part of the interior trim part protrudes toward the interior space. Trim airbag for vehicles. In claim 9,
A trim airbag for a vehicle is characterized in that a slot hole is formed in the fixing tab with an open upper part of the fixing tab, and when the airbag cushion part is deployed, the fixing tab of the interior trim part slides along the slot hole so that the upper part of the interior trim part protrudes toward the interior space. . In claim 1,
A fixing tab is provided on the upper part of the interior trim part, and the body panel and the fixing tab are mounted so that the upper part of the interior trim part and the car body panel are fixed. A break line is formed at the bottom of the fixing tab, and the break line of the fixing tab is formed when the airbag cushion part is deployed. A trim airbag for a vehicle, characterized in that the upper part of the interior trim protrudes toward the interior space when broken. In claim 1,
A trim airbag for a vehicle, characterized in that the interior trim portion and the airbag cushion portion are disposed on the vehicle headlining or vehicle pillar portion. In claim 1,
A trim airbag for a vehicle, characterized in that the front and rear parts of the interior trim part are integrally molded through blow molding.

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