KR20150051758A

KR20150051758A - Airbag

Info

Publication number: KR20150051758A
Application number: KR1020130133662A
Authority: KR
Inventors: 최중근
Original assignee: 현대모비스 주식회사
Priority date: 2013-11-05
Filing date: 2013-11-05
Publication date: 2015-05-13

Abstract

The present invention relates to an airbag that comprises a steering wheel which is installed on a vehicle, and a cushion which is placed inside the steering wheel. The cushion includes a front panel of which both sides of the outer circumference are folded in the centrifugal direction of the cushion to form a folding part, and a rear panel which is placed between the front panel and the steering wheel to be joined with the front panel.

Description

Airbag {AIRBAG}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air bag, and more particularly, to an air bag that reduces injury due to a passenger's secondary collision due to deployment of the air bag in a collision.

2. Description of the Related Art Generally, an airbag module mounted on a vehicle protects an occupant while the airbag tube is deployed toward a room when a large impact force such as a collision and a collision shock is generated, Side airbag module, and curtain airbag module.

This airbag is subjected to several crash tests to determine whether it is operating normally in the event of a collision, including the SmallOverlap crash test, which performs an operator safety test of an accident that occurs during a 25% .

Here, as the behavior of the dummy in the event of a small overlap collision of the vehicle progresses in the oblique direction to the left rather than the front, the head portion of the dummy collides with the edge of the cushion and the head of the dummy slides on the cushion, There is a problem that an injury due to a secondary impact such as a collision occurs.

A problem to be solved by the present invention is to provide an airbag for preventing a head of a driver from moving outside the edge of a cushion or a cushion protecting area in a small overlap frontal collision, thereby improving secondary collision.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an airbag according to an embodiment of the present invention includes a steering wheel provided on a vehicle and a cushion provided inside the steering wheel, wherein both sides of the cushion are arranged in the centrifugal direction of the cushion And a rear panel disposed between the front panel and the steering wheel to be coupled to the front panel.

The front panel may further include a tether having one end connected to the inside of the front panel and another end connected to the inside of the rear panel to constrain the front panel when the cushion is deployed.

Further, the folding portion may be sewn by being welded and torn when the cushion is deployed.

Also, the front panel may be circularly sewn with a tether.

Further, a vent hole may be formed in the rear panel to discharge gas when the cushion is deployed.

The tether may be formed with one end connected to the rear panel and the other end connected to the center of the front panel.

The details of other embodiments are included in the detailed description and drawings.

According to the airbag of the present invention, there is one or more of the following effects.

The head of the driver is seated in the airbag protection area in the event of a collision, thereby preventing injuries caused by the second collision.

It also has the effect of meeting the small overlap rule without increasing the volume of the additional device and curtain airbag.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an initial deployment when an airbag according to the present invention is mounted;
Fig. 2 is a sectional view showing the airbag according to Fig. 1,
3 is a front view showing an airbag according to the present invention,
Fig. 4 is a front view folded according to Fig. 3,
5 is a rear view showing the rear panel of the airbag according to the present invention,
6 is a rear view showing a front panel of an airbag according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining an airbag according to embodiments of the present invention.

FIG. 3 is a front view showing the airbag according to the present invention, FIG. 4 is a front view showing the airbag according to the present invention, FIG. 4 is a front view showing the airbag according to the present invention, Fig. 5 is a rear view of the airbag according to the present invention at the time of initial deployment, and Fig. 6 is a rear view of the airbag according to the present invention at the time of initial deployment.

The preferred air bag may be modified by a person skilled in the art and is an air bag in an embodiment of the present invention.

And a cushion (10) provided in the steering wheel (1), wherein the cushion (10) is folded in the centrifugal direction of the cushion (10) A rear panel 14 is disposed between the front panel 12 and the steering wheel 1 and is coupled to the front panel 12. The front panel 12 includes a front panel 12,

FIG. 1 is a sectional view showing the initial deployment when the airbag according to the present invention is mounted, and FIG. 2 is a sectional view showing the airbag according to FIG. 1 in full blanket.

Referring to FIG. 1, the steering wheel 1 is provided in a crash pad (not shown) installed in the interior of the vehicle, and the cushion 10 is provided at the center of the steering wheel 1 to be deployed due to a vehicle collision.

The cushion 10 is folded inside the steering wheel 1 and deployed in a vehicle collision. The cushion 10 is provided with a front panel 12 having folding portions 20 folded on both sides of the outer circumference in the centrifugal direction of the cushion 10. A rear panel (not shown) is disposed between the front panel 12 and the steering wheel so as to be coupled with the front panel 12 to form a cushion 10.

The folding portion 20 where the outer circumference of the cushion 10 is folded is the front panel 12 of the cushion 10. [ That is, both sides of the outer periphery of the front panel 12 are folded in the centrifugal direction of the cushion to form the folding portion 20.

One end of a tether 15 provided inside the cushion 10 is connected to the front panel 12. At this time, the connection between the front panel 12 and the tether 15 can be made by sewing or attaching. However, the sewing method is preferred in the present invention, and the tether 15 is circularly sewn on the front panel 12. [

3 is a front view showing the airbag according to the present invention and Fig. 4 is a front view folded according to Fig.

3 and 4, the front panel 12 is folded in the centrifugal direction of the cushion 10 at both sides of the outer periphery thereof when the front panel 12 is not deployed. The folding portion 20 is unfolded while the cushion 10 is deployed so that the outer circumference of the cushion 10 protrudes toward the passenger rather than the centrifugal portion so that the head of the passenger is seated on the distal end of the cushion 10. [

The folding portion 20 is folded in the B direction on the outer periphery of the front panel 12 in the unfolded state. At this time, in order to maintain the folded structure around the folded periphery, the cushion 10 is sewn by being welded, and ruptured when the cushion 10 is deployed, That is, the folding portion 20 sewn on the cushion 10 is expanded toward the passenger. The folding section 20 is folded in the centrifugal direction of the cushion 10 on both sides of the outer periphery of the front panel 12. [

5 is a rear view of a rear panel of an airbag according to the present invention.

The rear panel 14 is disposed between the front panel 12 and the steering wheel 1 and is connected to the other end of the tether 15 connected to the front panel 12. [ And sewed and adhered along the outer peripheries of the rear panel 14 and the front panel 12. A vent hole (not shown) is formed in the rear panel 14 so as to discharge gas when the cushion 10 is deployed. A plurality of vent holes are formed on both sides of the rear panel 14 to exhaust gas inside the cushion 10. [

The other end of the tether 15 is connected to the inside of the front panel 12 so as to restrain the front panel 12 when the cushion 10 is deployed. A plurality of tethers 15 are provided. For example, one end of the first tether is connected to the rear panel and the other end is connected to the center of the front panel 12. One end of the second tether is disposed on the rear panel opposite to the one end of the first tether, and the other end of the second tether is disposed on the front panel opposite to the other end of the first tether. Therefore, when the first tether and the second tether are installed on the front panel 12 and the rear panel 14, they have a trapezoidal shape.

The operation of the airbag according to the present invention will now be described.

1 and 2, a cushion 10 provided with a tether 15 for internally connecting the front panel 12 and the rear panel 14 is mounted on the steering wheel 1. [ The front panel 12 folded in a folded structure toward the centrifugal point of the cushion 10 is provided so as to be held on the outside of the cushion 10 when the cushion 10 is not deployed.

The tether 15 restrains the front panel 12 when the cushion 10 is deployed due to the impact of the vehicle and the folded portion 20 of the front panel 12 is unfolded The both sides of the cushion 10 are convex.

At this time, both sides of the front panel 12 are convex so that the center of the cushion 10 is concave so that the head of the passenger is seated.

Accordingly, since the folding portion 20 spreads when the head of the passenger touches the cushion 10, the head of the passenger is biased to the left and right sides.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

<Detailed Description of Main Drawings>
1: Steering wheel 10: Cushion
12: front panel 14: rear panel
15: Tether

Claims

A steering wheel provided on the vehicle; And
And a cushion provided inside the steering wheel,
The cushion
A front panel having folding portions formed by folding both sides of the outer periphery in the centrifugal direction of the cushion,
And a rear panel disposed between the front panel and the steering wheel to engage with the front panel.

The method according to claim 1,
Further comprising a tether having one end connected to the inside of the front panel to restrain the front panel when the cushion is deployed and the other end connected to the inside of the rear panel.

3. The method of claim 2,
Wherein the folding portion is sewn on a cushion and is ruptured when the cushion is deployed.

3. The method of claim 2,
Wherein the front panel is circularly sewn with the tether.

The method according to claim 1,
Wherein a plurality of vent holes are formed in the rear panel so as to discharge gas when the cushion is deployed.

3. The method of claim 2,
The tether
An airbag having one end connected to the rear panel and the other end connected to the center of the front panel.