KR100977598B1 - airbag instrument - Google Patents

airbag instrument Download PDF

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Publication number
KR100977598B1
KR100977598B1 KR1020070130247A KR20070130247A KR100977598B1 KR 100977598 B1 KR100977598 B1 KR 100977598B1 KR 1020070130247 A KR1020070130247 A KR 1020070130247A KR 20070130247 A KR20070130247 A KR 20070130247A KR 100977598 B1 KR100977598 B1 KR 100977598B1
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South Korea
Prior art keywords
cushion
vent hole
screen
screen panel
folding
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KR1020070130247A
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Korean (ko)
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KR20090062806A (en
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박영렬
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에스앤티대우(주)
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Priority to KR1020070130247A priority Critical patent/KR100977598B1/en
Publication of KR20090062806A publication Critical patent/KR20090062806A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/239Inflatable members characterised by their venting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/231Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334Expansion control features
    • B60R21/2338Tethers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/276Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/235Inflatable members characterised by their material
    • B60R2021/23504Inflatable members characterised by their material characterised by material
    • B60R2021/23509Fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23Inflatable members
    • B60R21/239Inflatable members characterised by their venting means
    • B60R2021/2395Inflatable members characterised by their venting means comprising means to control the venting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

본 발명에 따른 팽창충격 완화 에어백장치는, 팽창가스를 분출하는 인플레이터(10)와, 상기 인플레이터에서 분출되는 팽창가스에 의해 팽창되며, 조건에 따라 팽창가스가 외부로 유출되도록 하기 위한 벤트홀(20a)이 형성된 쿠션(20)과, 상기 쿠션의 벤트홀을 커버하도록 쿠션에 부착되며 상기 벤트홀과 연통되는 연통홀(30a)이 형성되어 벤트홀의 개방상태를 기본적으로 유지하는 구조로서, 에어백의 정상 작동조건에서는 쿠션의 팽창에 의해 일측으로 당겨짐으로써 상기 벤트홀을 차단하도록 구성된 스크린패널(30)을 포함하여 이루어진다.The expansion shock mitigation airbag device according to the present invention is inflated by the inflator 10 for ejecting the inflation gas and the inflation gas ejected from the inflator, and vent holes 20a for allowing the inflation gas to flow out according to the conditions. ) Is formed on the cushion 20 and the communication hole (30a) is attached to the cushion to cover the vent hole of the cushion is formed to maintain the open state of the vent hole basically, the top of the air bag In the operating conditions, the screen panel 30 is configured to block the vent hole by being pulled to one side by the expansion of the cushion.

쿠션에 스크린패널만이 부착된 간단한 구성으로 이루어지기 때문에 제작효율이 향상되고, 작동안정성 또한 뛰어나다는 이점이 있다.Since the cushion is made of a simple configuration with only the screen panel attached, there is an advantage that the manufacturing efficiency is improved, and the operational stability is also excellent.

Description

팽창충격 완화 에어백장치{airbag instrument}Airbag instrument for inflating shock

본 발명은 쿠션의 팽창충격에 의한 탑승자의 상해를 감소시킬 수 있는 에어백장치에 관한 것이다.The present invention relates to an airbag apparatus that can reduce the injuries of the occupant due to the cushioning shock.

일반적으로, 차량의 에어백장치는 사고발생시에 차량에 탑승한 운전자 및 탑승자가 운전대 내지는 인스트루먼트패널 및 전면유리창 등에 부딪혀서 상해를 입는 것을 방지하기 위한 안전수단으로서, 설치되는 위치에 따라 차량의 전면(前面) 충돌시에 운전자 및 탑승자를 보호하기 위한 프론트에어백과, 차량의 측면 충돌시에 운전자 및 탑승자를 보호하기 위한 사이드에어백 등으로 구분된다.In general, an airbag device of a vehicle is a safety means for preventing a driver and a passenger in a vehicle from injuring by hitting the steering wheel or an instrument panel and a windshield when an accident occurs. It is divided into a front airbag for protecting the driver and the occupant in a collision, and a side airbag for protecting the driver and the occupant in a side collision of the vehicle.

이와 같은 에어백장치는 가스를 분출하는 인플레이터(inflater)와, 인플레이터에서 분출된 가스에 의해 팽창 전개되는 쿠션, 차량의 충돌을 감지하여 충격신호를 발생하는 충격센서, 충격신호에 따라 인플레이터의 뇌관을 점화시키는 제어모듈을 포함하여 구성되어 있다.Such an airbag device ignites the inflator of the inflator according to the impact signal, an inflator for ejecting gas, a cushion inflated and deployed by the gas ejected from the inflator, a shock sensor for generating a shock signal by detecting a collision of the vehicle, and an impact signal. It is configured to include a control module.

에어백장치의 작동은, 차량에 충돌사고가 발생한 경우에 충격센서가 이를 감 지하여 제어모듈로 신호를 보내고, 상기 제어모듈이 인플레이터를 기폭시켜서 인플레이터에 충진된 가스가 분출됨으로써 가스에 의해 쿠션이 팽창 전개되는 방식으로 이루어진다.The operation of the airbag device is that when a crash occurs in the vehicle, the impact sensor detects the signal and sends a signal to the control module. The control module triggers the inflator to eject the gas filled in the inflator, thereby inflating the cushion by the gas. In a way that is deployed.

이에 따라 차량의 충돌시 차체와 탑승자의 직접적인 충돌을 방지함으로써 탑승자를 보호하게 된다.Accordingly, when the vehicle collides, the occupant is protected by preventing direct collision between the vehicle body and the occupant.

한편, 에어백장치의 작동시에는 매우 빠른 속도로 쿠션이 팽창 전개되는 만큼, 팽창되는 쿠션에 의해 탑승자가 받게 되는 이른바 팽창충격도 상당한데, 특히 탑승자가 몸을 기울여서 운전대나 대시패널에 가까이 하거나, 체격이 왜소한 사람이 운전을 위해 운전대에 근접해서 앉은 경우에는 팽창충격이 더욱 크게 느껴지기 때문에 이로 인해 탑승자가 상해를 입는 경우도 종종 발생하게 된다.On the other hand, as the cushion is inflated and deployed at a very high speed during operation of the airbag device, the so-called inflation shock that is received by the occupant by the inflated cushion is also considerable. In particular, the occupant is tilted close to the steering wheel or dash panel, If the dwarf is sitting close to the steering wheel for driving, the impact will be greater, which often results in injury to the occupant.

따라서, 이와 같은 에어백장치의 팽창충격에 의한 상해를 줄이기 위해 탑승자의 자세조건 내지는 체격조건에 따라, 운전대나 대시패널 등의 쿠션전개위치와 탑승자 간의 거리가 가까운 경우에는 쿠션의 팽창압력을 줄여서 상해를 최소화하고, 쿠션전개위치와 탑승자간의 간격이 적정하게 유지되는 경우에는 쿠션의 팽창압력이 정상적으로 유지되도록 하기 위한 여러 가지 방법이 안출되었다.Therefore, in order to reduce the injuries caused by the inflation shock of the airbag device, if the distance between the occupant and the cushion deployment position such as the steering wheel or the dash panel is close to the occupant, the inflation pressure of the cushion is reduced. Various methods have been devised to keep the inflation pressure of the cushion in a normal state when the gap between the cushion deployment position and the occupant is properly maintained.

쿠션의 팽창충격을 완화하기 위한 방법으로서는, 쿠션을 단순한 원형 내지는 타원형이 아니라 탑승자와 접하는 부분이 적절히 함몰되는 등의 형상으로 하여, 형상성상 사용자에게 가해지는 충격이 완화되도록 하는 이른바 형상방식, 쿠션의 외측에 상해 감소를 위한 상해 저감천을 덧대어 사용자에게 가해지는 충격이 감소되도록 하는 이른바 덧붙임방식 등이 있다.As a method for mitigating an inflation shock of the cushion, the cushion is not simply circular or oval, but a shape such as appropriately indenting the part contacting the occupant, and so on, so that the impact applied to the user is alleviated. There is a so-called addition method for reducing the impact on the user by adding an injury reducing cloth for reducing the injury on the outside.

한편, 종래기술에 있어서, 형상방식의 경우에는 충격완화를 위한 별다른 수단을 필요로 하지 않고 단순히 쿠션의 형상에 따른 특성만을 이용하는 것이므로 오작동의 우려가 없다는 특징을 가지고 있다. On the other hand, in the prior art, in the case of the shape method does not require any other means for mitigating impact, it is simply using the characteristics according to the shape of the cushion has a feature that there is no risk of malfunction.

그러나, 이러한 형상방식의 경우에는 승객의 위치나 체격 등의 조건과 무관하게 항상 동일한 위치에서 동일한 방향으로 충격완화작용이 수행되며, 불필요한 상황에서도 충격완화작용이 이루어지기 때문에 효용성이 낮고, 쿠션의 형상을 특수하게 가공하는 작업이 복잡하기 때문에 제작상의 어려움이 있다는 문제점을 내포하고 있다.However, in the case of such a shape method, the impact relief action is always performed in the same direction at the same position irrespective of the passenger's position or physique, and the effectiveness is low because the impact relief action is performed even in unnecessary situations, and the shape of the cushion Because of the complexity of the special machining process, there is a problem that there is a manufacturing difficulty.

덧붙임방식에 의하면 충격을 완화하기 위한 특수한 재질의 저감천을 사용해야 하기 때문에 제작비용이 높아진다는 문제점이 있다.According to the addition method, there is a problem in that the manufacturing cost is increased because a special cloth for reducing the impact must be used.

본 발명은 상기와 같은 종래기술의 문제점을 해소하기 위해 안출된 것으로, 구성이 간단하고, 작동안정성이 뛰어난 팽창충격 완화 에어백장치의 제공을 목적으로 한다.The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide an expansion shock alleviating airbag device having a simple configuration and excellent operational stability.

이와 같은 문제점을 해결하기 위하여 제공되는 본 발명에 따른 팽창충격 완화 에어백장치는, 팽창가스를 분출하는 인플레이터와, 상기 인플레이터에서 분출되 는 팽창가스에 의해 팽창되며, 조건에 따라 팽창가스가 외부로 유출되도록 하기 위한 벤트홀이 형성된 쿠션과, 상기 쿠션의 벤트홀을 커버하도록 쿠션에 부착되며 상기 벤트홀과 연통되는 연통홀이 형성되어 벤트홀의 개방상태를 기본적으로 유지하는 구조로서, 에어백의 정상 작동조건에서는 쿠션의 팽창에 의해 일측으로 당겨짐으로써 상기 벤트홀을 차단하도록 구성된 스크린패널을 포함하여 이루어진다.The expansion shock alleviating airbag device according to the present invention provided to solve the above problems is inflated by the inflator for ejecting the inflation gas and the inflation gas ejected from the inflator, the inflation gas flows out according to the conditions A cushion having a vent hole formed therein and a communication hole attached to the cushion to cover the vent hole of the cushion and communicating with the vent hole are formed to basically maintain the open state of the vent hole. In the case is made to include a screen panel configured to block the vent hole by being pulled to one side by the expansion of the cushion.

상기 쿠션에는 벤트홀을 기준으로 그 일측 부분이 접힌 구조의 쿠션폴딩부가 형성되고, 상기 스크린패널에는 연통홀을 기준으로 쿠션폴딩부 반대측의 일측 부분이 접힌 구조의 스크린폴딩부가 형성되며, 상기 쿠션과 스크린패널은 상기 쿠션폴딩부와 스크린폴딩부 사이를 벗어난 부위에서 서로 결합되며, 상기 쿠션폴딩부 및 스크린폴딩부의 접힘강도는 상기 쿠션과 스크린간의 결합강도보다 약하게 형성된다.The cushion is provided with a cushion folding portion having a structure in which one side thereof is folded based on a vent hole, and the screen panel has a screen folding portion having a structure in which one side of the opposite side of the cushion folding portion is folded based on a communication hole. The screen panel is coupled to each other at a portion deviating between the cushion folding portion and the screen folding portion, and the folding strength of the cushion folding portion and the screen folding portion is weaker than the bonding strength between the cushion and the screen.

상기 쿠션폴딩부는 쿠션의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더에 의해 서로 봉합되는 구조로 이루어지며, 상기 스크린폴딩부는 스크린패널의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더에 의해 서로 봉합되는 구조로 이루어지며, 상기 쿠션과 스크린패널은 결합테더에 의해 서로 결합되며, 상기 결합테더의 장력이 봉합테더의 장력보다 강하게 구성된다.The cushion folding portion is made of a structure in which the overlapped portions are sewn together by a suture tether while the portions of the cushion are pulled to overlap each other, and the screen folding portion is the overlapped portions in the pulled state so that the portions of the screen panel overlap each other. It is made of a structure that is sealed to each other, the cushion and the screen panel is coupled to each other by a coupling tether, the tension of the coupling tether is configured to be stronger than the tension of the sealing tether.

상기 쿠션폴딩부와 스크린폴딩부는 그 겹쳐진 폭이 서로 동일하게 이루어지며, 상기 벤트홀과 연통홀은 그 직경이 동일하게 이루어지고, 상기 쿠션폴딩부 및 스크린폴딩부의 겹쳐진 폭이 상기 벤트홀 및 연통홀의 반경을 초과하도록 이루어진다.The cushion folding portion and the screen folding portion are overlapped with each other, and the vent hole and the communication hole have the same diameter, and the overlapping width of the cushion folding portion and the screen folding portion is that of the vent hole and the communication hole. It is made to exceed the radius.

상기 스크린패널은 쿠션과 동일한 직물재질로 이루어지며, 상기 스크린패널은 쿠션의 외면에 부착된다.The screen panel is made of the same fabric material as the cushion, the screen panel is attached to the outer surface of the cushion.

이상에서 살펴본 바와 같이 본 발명에 의한 팽창충격 완화 에어백장치는, 쿠션에 스크린패널만이 부착된 간단한 구성으로 이루어지기 때문에 제작효율이 향상되고, 작동안정성 또한 뛰어나다는 이점이 있다.As described above, the inflating shock mitigation airbag device according to the present invention has an advantage that the manufacturing efficiency is improved and the operational stability is also excellent because it is made of a simple configuration in which only the screen panel is attached to the cushion.

이하 본 발명의 구체적인 내용을 도 1a 부터 도 2b 까지 참조하여 상세하게 설명한다. Hereinafter, the present invention will be described in detail with reference to FIGS. 1A to 2B.

본 발명에 따른 팽창충격 완화 에어백장치는, 도 1a와 도 1b에 나타난 것과 같이 팽창가스를 분출하는 인플레이터(10)와, 상기 인플레이터(10)에서 분출되는 팽창가스에 의해 팽창되며, 조건에 따라 팽창가스가 외부로 유출되도록 하기 위한 벤트홀(20a)이 형성된 쿠션과, 상기 쿠션(20)에 부착되는 스크린패널(30)을 포함하여 이루어진다.The expansion shock mitigation airbag device according to the present invention, as shown in Figure 1a and Figure 1b is inflated by the inflator 10 and the inflation gas ejected from the inflator 10, inflated according to the conditions And a screen panel 30 attached to the cushion 20, and a cushion in which a vent hole 20a is formed to allow gas to flow out.

상기 스크린패널(30)은 쿠션(20)의 벤트홀(20a)을 커버하도록 쿠션(20)에 부착되며, 상기 벤트홀(20a)과 연통되는 연통홀(30a)이 형성된 구조로 이루어진다. The screen panel 30 is attached to the cushion 20 to cover the vent hole 20a of the cushion 20, and has a structure in which a communication hole 30a communicating with the vent hole 20a is formed.

상기 쿠션(20)에는 벤트홀(20a)을 기준으로 그 일측 부분이 접힌 구조의 쿠션폴딩부(201)가 형성되고, 상기 스크린패널(30)에는 연통홀(30a)을 기준으로 쿠션 폴딩부(201) 반대측의 일측 부분이 접힌 구조의 스크린폴딩부(301)가 형성된다. The cushion 20 has a cushion folding part 201 having a structure in which one side thereof is folded based on the vent hole 20a, and the screen panel 30 has a cushion folding part based on the communication hole 30 a ( 201) Screen folding part 301 having a structure in which one side of the opposite side is folded is formed.

상기 쿠션폴딩부(201)는 쿠션(20)의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더(22)에 의해 서로 봉합되는 구조로 이루어지며, 스크린폴딩부(301) 역시 스크린패널(30)의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더(32)에 의해 서로 봉합되는 구조로 이루어진다.The cushion folding unit 201 has a structure in which the overlapped portions are sewn together by the suture tether 22 in a state in which a part of the cushion 20 is pulled to overlap each other, and the screen folding unit 301 is also the screen panel 30. The overlapped portions in a state in which a portion of the) is pulled so as to overlap with each other is made of a structure that is sealed to each other by the suture tether (32).

그리고, 상기 쿠션(20)과 스크린패널(30)은 상기 쿠션폴딩부(201)와 스크린폴딩부(301) 사이를 벗어난 부위에서 서로 결합된다.In addition, the cushion 20 and the screen panel 30 are coupled to each other at a portion apart from the cushion folding unit 201 and the screen folding unit 301.

상기 쿠션(20)과 스크린패널(30)의 결합구조 역시 결합테더(24)에 의해 쿠션(20)과 스크린패널(30)의 일단이 서로 결합되는 방식으로 이루어지는데, 쿠션폴딩부(201) 및 스크린폴딩부(301)의 접힘강도는 상기 쿠션(20)과 스크린패널(30) 간의 결합강도보다 약하게 형성된다.The coupling structure of the cushion 20 and the screen panel 30 is also made in such a way that one end of the cushion 20 and the screen panel 30 are coupled to each other by the coupling tether 24, the cushion folding unit 201 and The folding strength of the screen folding unit 301 is weaker than the bonding strength between the cushion 20 and the screen panel 30.

쿠션(20)과 스크린패널(30)간의 결합강도에 비해 쿠션폴딩부(201) 및 스크린폴딩부(301)의 접힘강도가 약하게 구성되도록 하기 위해서는 각 봉합테더(22)(32) 보다 장력이 강한 결합테더(24)를 사용하는 것이 바람직하다. Tension is stronger than the suture tethers 22 and 32 so that the folding strength of the cushion folding unit 201 and the screen folding unit 301 is weaker than the bonding strength between the cushion 20 and the screen panel 30. It is preferable to use the coupling tether 24.

또한, 상기 쿠션폴딩부(201)와 스크린폴딩부(301)는 그 겹쳐진 폭(b1)(b2)이 서로 동일하게 이루어지며, 상기 벤트홀(20a)과 연통홀(30a)은 그 직경(D)이 동일하게 이루어지며, 상기 쿠션폴딩부(201) 및 스크린폴딩부(301)의 겹쳐진 폭(b1)(b2)는 상기 벤트홀(20a) 및 연통홀(30a)의 반경(d)을 초과하도록 이루어지는 것이 바람직하다.In addition, the cushion folding unit 201 and the screen folding unit 301 has the same width (b1) (b2) overlapping each other, the vent hole (20a) and the communication hole (30a) is the diameter (D) ) Are made the same, and the overlap widths b1 and b2 of the cushion folding portion 201 and the screen folding portion 301 exceed the radius d of the vent hole 20a and the communication hole 30a. It is preferable to make it.

상기 스크린패널(30)은 쿠션(20)과 동일한 직물재질로 이루어지는 것이 바람 직한데, 이는 스크린패널(30)이 쿠션(20)과 다른 재질로 이루어지는 경우 에어백의 작동시 쿠션(20)과 스크린패널(30)이 서로 다른 힘으로 팽창됨으로써 어느 한쪽이 파열될 우려가 있기 때문이다.The screen panel 30 is preferably made of the same fabric material as the cushion 20, which is when the screen panel 30 is made of a different material from the cushion 20, the cushion 20 and the screen panel during operation of the airbag This is because there is a risk that either side is broken due to expansion of the 30 by different forces.

더불어, 본 발명의 구성에 있어서, 상기 스크린패널(30)은 쿠션(20)의 외면에 부착되도록 하는 것이 바람직한데, 이는 스크린패널(30)이 쿠션(20)의 내면에 부착되도록 하는 경우에 비해 그 작업이 수월하기 때문이다.In addition, in the configuration of the present invention, it is preferable that the screen panel 30 is attached to the outer surface of the cushion 20, which is compared to the case where the screen panel 30 is attached to the inner surface of the cushion 20. That's easy.

상술한 바와 같이 구성된 본 발명에 따른 팽창충격 완화 에어백장치의 작동에 대해 설명하면 다음과 같다.Referring to the operation of the expansion shock relief airbag device according to the present invention configured as described above are as follows.

먼저, 본 발명에 따른 에어백장치는 쿠션(20)의 벤트홀(20a)과 스크린패널(30)의 연통홀(30a)이 서로 연통됨으로써 벤트홀(20a)이 개방된 상태를 기본적으로 유지하게 되는데, 에어백 작동시 도 2a에 나타난 것과 같이 탑승자가 몸을 기울여서 운전대나 대시패널에 가까이 하거나, 체격이 왜소한 사람이 운전을 위해 운전대에 근접해서 앉은 경우와 같은 비정상 작동조건에서는 쿠션(20)의 팽창이 제한되기 때문에 쿠션(20)과 스크린패널(30)의 결합구조가 해체되지 않는다.First, in the airbag apparatus according to the present invention, the vent hole 20a of the cushion 20 and the communication hole 30a of the screen panel 30 communicate with each other to basically maintain the open state of the vent hole 20a. When the airbag is operated, as shown in FIG. 2A, the cushion 20 may not expand in abnormal operating conditions, such as when the occupant is inclined to approach the steering wheel or the dash panel, or when a person with a poor physique sits close to the steering wheel for driving. Because of the limitation, the coupling structure of the cushion 20 and the screen panel 30 is not dismantled.

이와 같은, 에어백의 비정상 작동조건에서는 벤트홀(20a)의 개방된 상태가 그대로 유지되기 때문에 인플레이터(10)에서 분출된 가스의 일부가 벤트홀(20a)을 통해 외부로 배출됨으로써 쿠션(20)의 팽창압력이 후술된 정상 작동조건에서 보다 낮아지게 되며, 탑승자에게 가해지는 팽창충격 또한 완화된다.In such an abnormal operation condition of the airbag, since the open state of the vent hole 20a is maintained as it is, a part of the gas ejected from the inflator 10 is discharged to the outside through the vent hole 20a, so that the cushion 20 The inflation pressure is lower than in the normal operating conditions described below, and the inflation shock applied to the occupant is also alleviated.

에어백의 정상 작동조건에서는, 도 2b에 나타난 것과 같이 쿠션(20)의 팽창 이 제한되지 않으며, 팽창량이 일정치 이상이 되면, 쿠션폴딩부(201)의 접힘상태를 유지하고 있는 봉합테더(22)가 쿠션이 팽창함에 따라 끊어지면서 쿠션폴딩부(201)가 해체되어 펴지게 된다. Under normal operating conditions of the airbag, as shown in FIG. 2B, the expansion of the cushion 20 is not limited, and when the amount of expansion exceeds a certain value, the suture tether 22 which maintains the folded state of the cushion folding unit 201 is provided. As the cushion is inflated, the cushion folding unit 201 is disassembled and stretched.

또한, 상기 쿠션(20)과 결합되어 있는 스크린패널(30) 역시 쿠션(20)이 팽창함에 따라 쿠션(20)과 결합된 구조상 일측으로 이끌리는 것과 같은 작용을 받게 되고, 이에 따라 스크린폴딩부(301)의 접힘상태를 유지하고 있는 봉합테더(32)가 끊어지면서 스크린폴딩부(301)가 해체되고, 스크린패널(30)도 펴지게 된다.In addition, the screen panel 30 coupled to the cushion 20 is also subjected to the same action as being led to one side in the structure coupled with the cushion 20 as the cushion 20 is expanded, accordingly the screen folding unit As the sealing tether 32 holding the folded state 301 is broken, the screen folding unit 301 is dismantled, and the screen panel 30 is also unfolded.

따라서, 상기 쿠션(20)과 스크린패널(30)은 양 폴딩부(201)(301)가 해체됨에 따라 벤트홀(20a) 및 연통홀(30a)을 중심으로 대향되는 방향에 구성된 양 결합부 사이 간격이 확장되는 것과 같은 작용을 이루게 되는데, 상기 쿠션폴딩부(201)의 접힘폭(b1)과 스크린폴딩부(301)의 접힘폭(b2)이 동일하기 때문에 쿠션(20)과 스크린패널(30)의 확장폭 역시 동일하게 이루어지는 반면, 양 폴딩부(201)(301)가 벤트홀(20a) 및 연통홀(30a)을 중심으로 서로 반대방향에 형성된 특성상, 벤트홀(20a)과 연통홀(30a)은 서로 반대반향으로 그 위치를 이동하게 된다.Accordingly, the cushion 20 and the screen panel 30 are formed between both coupling parts formed in opposite directions about the vent hole 20a and the communication hole 30a as both folding parts 201 and 301 are dismantled. The gap is extended, and since the folding width b1 of the cushion folding part 201 and the folding width b2 of the screen folding part 301 are the same, the cushion 20 and the screen panel 30 are the same. While the expansion width of) is the same, both folding parts 201 and 301 are formed in opposite directions with respect to the vent hole 20a and the communication hole 30a, so that the vent hole 20a and the communication hole ( 30a) moves their positions in opposite directions to each other.

그리고, 양 폴딩부(201)(301)의 접힘폭(b1)(b2)이 벤트홀(20a)과 연통홀(30a)의 반경(d)보다 크기 때문에 벤트홀(20a)과 연통홀(30a)의 위치 이동량 역시 그 반경을 초과하게 되어 상기 벤트홀(20a)과 연통홀(30a)은 서로 겹치지 않고 엇갈린 위치에 놓이게 됨으로써, 벤트홀(20a)이 차단된 상태가 된다. Since the folding widths b1 and b2 of the two folding parts 201 and 301 are larger than the radius d of the vent hole 20a and the communication hole 30a, the vent hole 20a and the communication hole 30a are provided. ), The amount of position movement also exceeds the radius, so that the vent hole 20a and the communication hole 30a are placed in a staggered position without overlapping each other, whereby the vent hole 20a is blocked.

이에 따라, 정상 작동조건에서는 팽창가스가 쿠션(20)의 외부로 거의 누출되지 않기 때문에 팽창압력이 높아짐으로써 쿠션(20)이 최대치로 팽창되어 효과적인 완충작용을 수행하게 된다.Accordingly, under normal operating conditions, since the inflation gas hardly leaks to the outside of the cushion 20, the inflation pressure is increased to expand the cushion 20 to the maximum value, thereby effectively performing a cushioning action.

도 1a, 1b는 본 발명에 따른 팽창충격 완화 에어백장치의 요부구성 및 각 작동상태를 나타낸 개략도이다.Figure 1a, 1b is a schematic diagram showing the main configuration and each operating state of the expansion shock mitigation airbag device according to the present invention.

도 2a는 본 발명에 따른 팽창충격 완화 에어백장치의 비정상 작동조건에서 작용을 나타낸 예시도이다.Figure 2a is an exemplary view showing the action in the abnormal operating conditions of the expansion shock mitigation airbag device according to the present invention.

도 2b는 본 발명에 따른 팽창충격 완화 에어백장치의 정상 작동조건에서 작용을 나타낸 예시도이다.Figure 2b is an exemplary view showing the action in the normal operating conditions of the inflating shock relief airbag apparatus according to the present invention.

<도면의 주요 부호에 대한 설명>DESCRIPTION OF THE RELATED ART [0002]

10: 인플레이터 20: 쿠션 10: Inflator 20: Cushion

20a: 벤트홀 201: 쿠션폴딩부 20a: vent hole 201: cushion folding part

22: 봉합테더 24: 결합테더 22: Suture Tether 24: Combined Tether

30: 스크린패널 30a: 연통홀 30: screen panel 30a: communication hole

301: 스크린폴딩부 32: 봉합테더301: screen folding unit 32: suture tether

Claims (6)

팽창가스를 분출하는 인플레이터, Inflator for ejecting expansion gas, 상기 인플레이터에서 분출되는 팽창가스에 의해 팽창되며, 조건에 따라 팽창가스가 외부로 유출되도록 하기 위한 벤트홀이 형성된 쿠션, A cushion which is expanded by the expansion gas ejected from the inflator and has a vent hole for allowing the expansion gas to flow out according to a condition; 상기 쿠션의 벤트홀을 커버하도록 쿠션에 부착되며 상기 벤트홀과 연통되는 연통홀이 형성되어 벤트홀의 개방상태를 기본적으로 유지하는 구조로서, 에어백의 정상 작동조건에서는 쿠션의 팽창에 의해 일측으로 당겨짐으로써 상기 벤트홀을 차단하도록 구성된 스크린패널, A communication hole is attached to the cushion to cover the vent hole of the cushion, and a communication hole communicating with the vent hole is formed to basically maintain the open state of the vent hole, and under normal operating conditions, the air bag is pulled to one side by the expansion of the cushion. A screen panel configured to block the vent hole; 을 포함하여 이루어지며;It is made, including; 상기 쿠션에는 벤트홀을 기준으로 그 일측 부분이 접힌 구조의 쿠션폴딩부가 형성되고, The cushion is provided with a cushion folding portion having a structure in which one side thereof is folded based on the vent hole, 상기 스크린패널에는 연통홀을 기준으로 쿠션폴딩부 반대측의 일측 부분이 접힌 구조의 스크린폴딩부가 형성되며,The screen panel is provided with a screen folding portion having a structure in which one side portion opposite to the cushion folding portion is folded based on the communication hole, 상기 쿠션과 스크린패널은 상기 쿠션폴딩부와 스크린폴딩부 사이를 벗어난 부위에서 서로 결합되며, The cushion and the screen panel are coupled to each other at a portion apart from the cushion folding portion and the screen folding portion, 상기 쿠션폴딩부 및 스크린폴딩부의 접힘강도는 상기 쿠션과 스크린간의 결합강도보다 약하게 형성됨으로써, The folding strength of the cushion folding portion and the screen folding portion is formed to be weaker than the bonding strength between the cushion and the screen, 에어백의 정상작동시에는 쿠션이 팽창함에 따라 쿠션폴딩부가 해체되고, 쿠션에 의해 스크린패널이 당겨져 스크린폴딩부 또한 해체됨으로써 벤트홀과 연통홀이 그 위치가 서로 어긋나게 이동하여 벤트홀이 차단되는 것In normal operation of the airbag, as the cushion is inflated, the cushion folding part is dismantled, the screen panel is pulled by the cushion, and the screen folding part is also dismantled so that the vent hole and the communication hole are shifted from each other and the vent hole is blocked. 을 특징으로 하는 팽창충격완화 에어백장치.Inflating impact relief airbag device, characterized in that. 삭제delete 제1항에 있어서, The method of claim 1, 상기 쿠션폴딩부는 쿠션의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더에 의해 서로 봉합되는 구조로 이루어지며, The cushion folding unit is made of a structure in which the overlapped portions are sealed to each other by a suture tether in a state in which a part of the cushion is pulled to overlap each other, 상기 스크린폴딩부는 스크린패널의 일부가 서로 겹쳐지도록 당겨진 상태에서 겹쳐진 부위가 봉합테더에 의해 서로 봉합되는 구조로 이루어지며, The screen folding part is made of a structure in which a portion of the screen panel is overlapped with each other by a suture tether in the pulled state to overlap each other, 상기 쿠션과 스크린패널은 결합테더에 의해 서로 결합되며, The cushion and the screen panel are coupled to each other by a coupling tether, 상기 결합테더의 장력이 봉합테더의 장력보다 강하게 구성되는 것 The tension of the coupling tether is configured to be stronger than the tension of the suture tether 을 특징으로 하는 팽창충격 완화 에어백장치.Inflating impact relief airbag device, characterized in that. 제1항에 있어서, The method of claim 1, 상기 쿠션폴딩부와 스크린폴딩부는 그 겹쳐진 폭이 서로 동일하게 이루어지며, The cushion folding portion and the screen folding portion is made the same width overlap each other, 상기 벤트홀과 연통홀은 그 직경이 동일하게 이루어지고, The vent hole and the communication hole is made of the same diameter, 상기 쿠션폴딩부 및 스크린폴딩부의 겹쳐진 폭이 상기 벤트홀 및 연통홀의 반경을 초과하도록 이루어지는 것The overlapping width of the cushion folding portion and the screen folding portion is made to exceed the radius of the vent hole and the communication hole 을 특징으로 하는 팽창충격 완화 에어백장치.Inflating impact relief airbag device, characterized in that. 제1항에 있어서, The method of claim 1, 상기 스크린패널은 쿠션과 동일한 직물재질로 이루어지는 것을 특징으로 하는 팽창충격 완화 에어백장치.The screen panel is a shock absorbing airbag device, characterized in that made of the same fabric material as the cushion. 제1항에 있어서, The method of claim 1, 상기 스크린패널은 쿠션의 외면에 부착되는 것을 특징으로 하는 팽창충격 완화 에어백장치.The screen panel is inflated shock relief airbag device, characterized in that attached to the outer surface of the cushion.
KR1020070130247A 2007-12-13 2007-12-13 airbag instrument KR100977598B1 (en)

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KR101622094B1 (en) 2014-05-26 2016-05-31 현대모비스 주식회사 Airbag of Vehicle

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KR102192259B1 (en) * 2014-10-29 2020-12-17 현대모비스 주식회사 Air bag apparatus

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KR19990051053A (en) * 1997-12-19 1999-07-05 양재신 Side airbag cushion with variable vent holes
KR20050082716A (en) * 2004-02-20 2005-08-24 현대모비스 주식회사 Cushion of passenger air bag system
US20060131856A1 (en) 2004-12-16 2006-06-22 Trw Automotive Safety Systems Gmbh Gas bag module with a discharge opening
EP1834848A2 (en) 2006-03-13 2007-09-19 Dalphi Metal Espana, S.A. Airbag with an adaptativelt closable vent device

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KR19990051053A (en) * 1997-12-19 1999-07-05 양재신 Side airbag cushion with variable vent holes
KR20050082716A (en) * 2004-02-20 2005-08-24 현대모비스 주식회사 Cushion of passenger air bag system
US20060131856A1 (en) 2004-12-16 2006-06-22 Trw Automotive Safety Systems Gmbh Gas bag module with a discharge opening
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101622094B1 (en) 2014-05-26 2016-05-31 현대모비스 주식회사 Airbag of Vehicle
US9415743B2 (en) 2014-05-26 2016-08-16 Hyundai Mobis Co., Ltd. Airbag apparatus

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