KR20120118234A - A side airbag apparatus - Google Patents

Abstract

PURPOSE: A side airbag apparatus is provided to restrict an airbag cushion so that the airbag cushion is not pushed back by passengers. CONSTITUTION: A side airbag apparatus comprises an airbag cushion(10), an airbag housing, and a closed loop(30). The airbag cushion is expanded by gas. The airbag housing comprises a first side wall(22) and a second side wall. The airbag cushion is inserted in between the first and second side walls. The closed loop comprises first and second hinge points. The airbag cushion protrudes form between the first and second side walls. The first hinge point is rotated around first side wall in between the first side wall and the airbag cushion by the weight of a passenger. The second hinge point is rotated around the second side wall at the outer side of the second side wall.

Description

Side airbag device {A SIDE AIRBAG APPARATUS}

The present invention relates to a side airbag device, and more particularly, to a side airbag device including a closed loop having two hinge points rotated by a load of a passenger applied to an inflated airbag cushion.

Typically, side airbags are mounted on the side of the body to protect the passenger's side. In the event of a vehicle accident, the airbag cushion is inflated by the introduced gas, and the inflated airbag cushion protects the passengers acting laterally.

However, the passenger who is primarily acted as the airbag cushion reacts with the cushion force of the airbag cushion and is secondly acted in the opposite direction, thereby hitting the passenger next to the seat. Therefore, there is a need for a side airbag device that can prevent injuries due to collision between such passengers.

The problem to be solved by the present invention is to provide a side airbag device that can prevent the inflated airbag cushion is pushed to the side by the load of the passenger to prevent the collision between the passengers.

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, the side airbag device according to an embodiment of the present invention, the airbag cushion is expanded when the gas flows, the first sidewall, and the second airbag cushion is inserted between the first sidewall Between the first sidewall and the airbag cushion by an airbag housing consisting of a sidewall and a passenger's load applied to the protruding airbag cushion after the airbag cushion protrudes from between the first sidewall and the second sidewall while the airbag cushion is inflated. And a closed loop in which a first hinge point rotated with respect to the first sidewall and a second hinge point rotated with respect to the second sidewall outside the second sidewall are formed.

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

The side airbag device according to the present invention has an effect that can prevent collision between passengers because the closed loop is rotated about the first hinge point and the second hinge point, thereby restraining the airbag cushion from being pushed by the load of the passenger. There is.

In addition, since the internal volume of the lower protective part of the airbag cushion is small, there is an effect that an inflator for generating a small capacity gas can be used.

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

1 is an exploded perspective view of a side airbag device according to an embodiment of the present invention;
2 is a perspective view showing a side airbag device according to an embodiment of the present invention;
3 is a perspective view showing an operating state of a side airbag device according to an embodiment of the present invention;
4 is a plan sectional view of FIG. 3;
5 is a side view as seen from arrow A of FIG.
6 is a view showing a state before the passenger is loaded on the airbag cushion of the side airbag device according to an embodiment of the present invention,
7 is a view showing a state after the passenger is loaded on the airbag cushion of the side airbag device according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by 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 being 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 concept of the invention to those skilled in the art. Is provided to fully convey 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.

Hereinafter, a side airbag apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1 is an exploded perspective view of a side airbag device according to an embodiment of the present invention, Figure 2 is a perspective view of the side airbag device combined according to an embodiment of the present invention.

1 and 2, a side airbag device according to an embodiment of the present invention includes an airbag cushion 10, an airbag housing 20, and a closed loop 30.

The airbag cushion 10 is inflated when gas is introduced to protect the passengers. An inflator (not shown) for generating a gas in a vehicle accident is disposed inside the airbag cushion 10, and the fastening part 45 formed in the inflator exits out of the airbag cushion 10.

The airbag housing 20 includes a first sidewall 22, a second sidewall 24, and a connecting wall 26.

The first side wall 22 and the second side wall 24 are spaced from each other, and the airbag cushion 10 is folded a plurality of times, and is inserted between the first side wall 22 and the second side wall 24 spaced from each other.

The second side wall 24 is provided with a coupling hole 24a into which the fastening portion 45 is inserted and coupled. The fastening part 45 is inserted into the coupling hole 24a and then protruded to be fixed to the seat frame 70 to be described later, so that the second side wall 24 is fixed to the seat frame 70, thereby the side of the present embodiment. The airbag device is mounted to the seat frame 70.

The connecting wall 26 connects between the first side wall 22 and the second side wall 24. A part of the connection wall 26 is cut to form a slot 26a. The closed loop 30 is inserted between the first sidewall 22 and the airbag cushion 10, passes through the slot 26a, and surrounds the outside of the second sidewall 24. Thus, the airbag cushion 10 inserted between the first sidewall 22 and the second sidewall 24 is disposed between the closed loop 30 and the second sidewall 24 to form the closed loop 30 and the first loop. It is wrapped by two side walls 24. Of course, when the connecting wall 26 is not formed in the airbag housing 20, the closed loop 30 is inserted between the first sidewall 22 and the airbag cushion 10 so as to extend the outside of the second sidewall 24. It can be wrapped.

The airbag housing 20 is formed of a hard material such as metal or plastic that can support the airbag cushion 10 and the closed loop 30. In addition, the airbag cushion 10 is formed of a soft material that can be folded and inflated. In addition, the closed loop 30 is formed of a soft material that can surround the airbag housing 20 together with the airbag cushion 10 inserted between the first sidewall 22 and the second sidewall 24. In the present embodiment, the closed loop 30 may be formed of the same material as that of the airbag cushion 10, and may be formed by coating nylon and the like on a fabric.

A strap 2 is disposed in the airbag housing 20, and the airbag cushion 10 and the closed loop 30 in which the strap 2 is inserted between the first sidewall 22 and the second sidewall 24 are removed. The first side wall 22 and the second side wall 24 are connected so as not to come out.

In addition, the inflator 40 is connected to the ACU (Airbag Control Unit) (not shown) through the wire 4, the gas generating medium contained therein in response to the signal of the ACU in the event of a vehicle can explode to generate gas have.

Figure 3 is a perspective view showing the operating state of the side airbag device according to an embodiment of the present invention, Figure 4 is a cross-sectional view of Figure 3, Figure 5 is a side view as seen from arrow A of FIG.

3 to 5, the airbag cushion 10 is mounted on the side of the seat frame 70, which is the skeleton of the seat on which the passenger sits, thereby protecting the side of the passenger. The airbag cushion 10 may be disposed on the left side or the right side of the seat frame 70 to prevent collision between passengers.

A retainer 50 is further disposed inside the airbag cushion 10, and the fastening portion 45 of the inflator 40 includes the airbag cushion 10, the retainer 50, the second sidewall 24, and the closed loop 30. ) And then projected outwards, and then coupled to the seat frame 70, the side airbag device of the present embodiment is mounted to the seat frame 70.

The airbag cushion 10 includes an upper protection part 12 formed at an upper portion and a lower protection part 14 formed at a lower portion thereof. The airbag cushion 10 is inflated and protrudes between the first sidewall 22 and the second sidewall. When the inflation of the airbag cushion 10 is completed, the upper protector 12 is opposed to the head and neck of the passenger to protect the head and neck of the passenger, the lower protector 14 is opposed to the shoulder of the passenger Protect the torso, including the passenger's shoulders.

The upper protector 12 has a larger internal volume than the lower protector 14, and when the expansion is completed, protrudes further toward the front and passengers than the lower protector 14.

The lower protector 14 has a smaller internal volume than the upper protector 12, and when the passenger is loaded after the expansion is completed, a larger internal pressure is formed than the upper protector 12, so that the load applied by the passenger The airbag cushion 10 is not pushed out of the seat frame 70. In addition, since the lower protection portion 14 is disposed in the closed loop 30, when the expansion is completed, the outer pressure is pushed out by the closed loop 30, and the internal pressure is increased to be robust, so that the airbag is driven by the load applied by the passenger. The cushion 10 is not pushed out of the seat frame 70. Therefore, it is possible to prevent a collision between the passengers, a phenomenon in which the passengers collide with the passengers disposed opposite the airbag cushion 10.

As such, since the lower protective part 14 has a smaller internal volume than the upper protective part 12, the internal pressure of the lower protective part 14 can be increased even with the inflator 40 that generates a small amount of gas. The airbag cushion 10 can be prevented from being pushed out of the seat frame 70 by the load of the passenger.

In particular, referring to FIG. 4, after the airbag cushion 10 is inflated and protrudes from between the first sidewall 22 and the second sidewall 24, by a load of a passenger applied to the protruding airbag cushion 10, The closed loop 30 may include a first hinge point H1 rotated about the first sidewall 22 between the first sidewall 22 and the airbag cushion 10, and the outer side of the second sidewall 24. The second hinge point H2 is rotated with respect to the second sidewall 24. That is, the airbag cushion 10 receives a force to push the outside of the seat frame 70 by the load of the passengers applied to the inflated airbag cushion 10. At this time, the closed loop 30 has a lower internal pressure. While being pushed out of the seat frame 70 together with the protection part 14, the lower protection part 14 is rotated based on the first hinge point H1 and the second hinge point H2. By being constrained by the closed loop 30, the airbag cushion 10 is not pushed outward.

In addition, the first sidewall 22 is formed longer than the second sidewall 24, so that the first hinge point H1 is formed in front of the second hinge point H2. Therefore, it is possible to more firmly prevent the airbag cushion 10 from being pushed out of the seat frame 70 by the load applied by the passenger.

In particular, when the airbag cushion 10 is pushed out of the seat frame 70, the support member 60 is provided on the first sidewall 22 so that the first sidewall 22 does not open from the second sidewall 24. Further, when the closed loop 30 is rotated about the first hinge point H1 and the second hinge point H2, the support member 60 supports the first side wall 22, thereby providing an airbag. It is possible to more firmly prevent the cushion 10 from being pushed out of the seat frame 70.

6 is a view showing a state before the passenger is loaded on the airbag cushion of the side airbag apparatus according to an embodiment of the present invention, Figure 7 is a state after the passenger is loaded on the airbag cushion of the side airbag device according to an embodiment of the present invention It is a figure which shows.

6 and 7, the operation of the side airbag apparatus according to the embodiment of the present invention will be described.

First, referring to FIG. 6, the airbag cushion 10 is inflated under the force in the direction of arrow B by the gas generated from the inflator 40, and protrudes between the first sidewall 22 and the second sidewall 24. After that, the lower protective portion 14 receives the force in the direction of the arrow C by the closed loop 30, and the lower protective portion 14 is strengthened by increasing the internal pressure of the lower protective portion 14. Since the upper protection part 12 protrudes toward the passenger 1 more than the lower protection part 14, the upper protection part 12 is loaded with the head and neck of the passenger 1 and the lower protection part 14. When the torso including the shoulder of the passenger 1 is loaded at about the same time, the airbag cushion 10 can restrain the side of the passenger 1 as a whole if the lower protection part 14 is restrained from being pushed outward. do.

Referring to FIG. 7, when the passenger 1 is loaded on the airbag cushion 10, the airbag cushion 10 is subjected to the force in the direction of arrow D by the load of the passenger 1 applied to the airbag cushion 10. , The closed loop 30 is subjected to the force in the direction of the arrow E. The closed loop 30 is rotated with respect to the first hinge point H1 and the second hinge point H2 while being pushed out of the seat frame 70 together with the lower protection portion 14 with increased internal pressure. After that, the lower protective part 14 is restrained by the closed loop 30 so that the airbag cushion 10 is not pushed outward.

As described above, in the side airbag apparatus according to the present invention, the closed loop 30 is rotated based on the first hinge point H1 and the second hinge point H2, and the airbag cushion 10 is applied to the load of the passenger. Since the restraint is prevented from being pushed by, the collision between passengers can be prevented.

In addition, since the internal volume of the lower protective part 14 of the airbag cushion 10 is small, the inflator 40 which generates a small amount of gas can be used.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: airbag cushion 12: upper protection
14: lower protection part 20: airbag housing
22: first sidewall 24: second sidewall
26: connecting wall 26a: slot
30: closed loop 40: inflator
45: fastening portion 50: retainer
60: support member 70: seat frame
H1: first hinge point H2: second hinge point

Claims (9)

An airbag cushion inflated when gas is introduced;
An airbag housing comprising a first sidewall and a second sidewall through which the airbag cushion is inserted between the first sidewall; And
After the airbag cushion is inflated and protrudes from between the first sidewall and the second sidewall, the load is applied to the protruding airbag cushion based on the first sidewall between the first sidewall and the airbag cushion. And a closed loop in which a first hinge point rotated and a second hinge point rotated relative to the second sidewall outside the second sidewall are formed. The method according to claim 1,
And the closed loop is inserted between the first sidewall and the airbag cushion to surround the outside of the second sidewall. The method according to claim 1,
The airbag housing further includes a connecting wall connecting the first sidewall and the second sidewall.
The connection wall is partially cut to form a slot,
And the closed loop is inserted between the first sidewall and the airbag cushion to surround the outside of the second sidewall through the slot. The method according to claim 2 or 3,
And the airbag cushion inserted between the first sidewall and the second sidewall is disposed between the closed loop and the second sidewall. The method according to claim 1,
And a support member disposed on the first sidewall and supporting the first sidewall when the closed loop is rotated about the first hinge point and the second hinge point. The method according to claim 1,
The second sidewall is fixed to the seat frame, the first sidewall is formed longer than the second sidewall, the first hinge point is formed in front of the second hinge point device. The method according to claim 1,
And the airbag cushion is inflated to include an upper protector facing the passenger's head and neck and a lower protector disposed opposite the shoulder of the passenger and disposed in the closed loop. The method of claim 7,
The side airbag device of the lower protection portion has a smaller internal volume than the upper protection portion. The method of claim 7,
The upper air protection unit has a larger internal volume than the lower protection portion, and the side airbag device protrudes more toward the passenger than the lower protection portion.

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