KR20050076047A - Passenger air bag with outer tether - Google Patents

Passenger air bag with outer tether Download PDF

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Publication number
KR20050076047A
KR20050076047A KR1020040003840A KR20040003840A KR20050076047A KR 20050076047 A KR20050076047 A KR 20050076047A KR 1020040003840 A KR1020040003840 A KR 1020040003840A KR 20040003840 A KR20040003840 A KR 20040003840A KR 20050076047 A KR20050076047 A KR 20050076047A
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KR
South Korea
Prior art keywords
cushion
outer band
passenger seat
seat airbag
folded
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KR1020040003840A
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Korean (ko)
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권해욱
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현대모비스 주식회사
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Priority to KR1020040003840A priority Critical patent/KR20050076047A/en
Publication of KR20050076047A publication Critical patent/KR20050076047A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2342—Tear seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/237—Inflatable members characterised by the way they are folded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

본 발명에 의한 외부 띠를 가진 조수석 에어백은, 하우징의 하측에는 인플레이터가 내장되고, 하우징의 상측에는 쿠션이 접혀져 결합되며, 상기 쿠션을 쿠션 커버가 감싸고 있는 조수석 에어백에 있어서, 상기 쿠션 커버의 외부 중간에는 에어 백의 길이방향을 따라 외부 띠(22)가 둘러져 고정되고, 쿠션(14, 14')은 상기 외부 띠를 기준으로 하여 양측으로 나누어져 접혀져 있으므로, 쿠션의 전개시 그 전개방향을 분산하므로써 비정상적으로 착좌된 승객의 상해를 방지하는 효과가 있다.In the passenger seat airbag having an outer band according to the present invention, an inflator is built in a lower side of the housing, a cushion is folded and coupled to an upper side of the housing, and a passenger seat airbag in which the cushion cover is wrapped. The outer band 22 is enclosed and fixed along the longitudinal direction of the air bag, and the cushions 14 and 14 'are divided into two sides on the basis of the outer band and folded. It is effective to prevent injuries of passengers seated.

Description

외부 띠를 가지는 조수석 에어백{passenger air bag with outer tether} Passenger air bag with outer tether}

본 발명은 조수석 에어백에 관한 것으로서, 보다 상세하게는 쿠션의 외부에 외부 띠를 설치한 조수석 에어백에 관한 것이다.The present invention relates to a passenger seat airbag, and more particularly, to a passenger seat airbag provided with an outer belt on the outside of a cushion.

에어백은 차량의 충돌 사고시 공기 또는 가스가 급속 주입되어 부풀어 오름으로써 탑승자의 상부 몸체를 보호하기 위한 보호 장구로서, 운전자의 보호를 위한 운전석 에어백과 조수석 탑승자의 보호를 위한 조수석 에어백으로 구분된다. 운전석 에어백은 일반적으로 핸들의 내부에 장착되어 있으며, 조수석 에어백은 조수석 앞쪽의 크래쉬 패드에 설치되어 있다.The airbag is a protective device for protecting the upper body of the occupant by inflating air or gas inflated during a crash of the vehicle, and is divided into a driver's seat airbag for the driver's protection and a passenger seat airbag for the passenger's passenger. The driver's seat airbag is typically mounted inside the steering wheel, and the passenger seat airbag is mounted on the crash pad in front of the passenger seat.

도1은 종래 조수석 에어백을 나타낸 개략 단면도이고, 도2는 종래 조수석 에어백의 쿠션이 접힌 상태를 나타내는 단면도이다. 도1에 도시한 바와 같은 조수석 에어백(1)은 글로브 박스 상측의 크래쉬 패드에 설치되는데, 하우징(2)의 상측에는 쿠션(4)이 결합되고, 하우징(2)의 하측에는 인플레이터(6)가 내장된 구조이다. 상기 쿠션(4)은 도2에 도시한 바와 같이 접혀져서 쿠션 커버(8)에 의해 이탈하지 않게 되어 있다. 상기 쿠션 커버(8)에는 에어백이 작동할 시 찢어지기 쉽도록 도시하지 않은 티어 라인(tear line)이 에어백의 길이방향을 따라 형성되어 있다. 1 is a schematic cross-sectional view showing a conventional passenger airbag, Figure 2 is a cross-sectional view showing a state in which the cushion of the conventional passenger airbag is folded. The passenger seat airbag 1 as shown in FIG. 1 is installed in a crash pad on the upper side of the glove box. A cushion 4 is coupled to the upper side of the housing 2, and an inflator 6 is disposed below the housing 2. It is a built-in structure. The cushion 4 is folded as shown in FIG. 2 so as not to be separated by the cushion cover 8. The cushion cover 8 has a tear line (not shown) formed along the longitudinal direction of the airbag so as to be easily torn when the airbag operates.

이와 같이 구성된 조수석 에어백(1)은 차량 충돌시 ECU로부터 에어백 작동 신호를 받으면 에어백(1)의 인플레이터(6)에 점화가 이루어져 폭발하면서 쿠션(4)이 부풀게 되고, 이때 상기 쿠션(4)의 팽창력에 의해 쿠션 커버(8)가 티어 라인을 따라 갈라지면서 상기 쿠션(4)은 조수석의 전방으로 크게 부풀게 된다.When the passenger seat airbag 1 configured as described above receives an airbag operation signal from the ECU during a vehicle crash, the inflator 6 of the airbag 1 is ignited and exploded, causing the cushion 4 to swell. In this case, the inflating force of the cushion 4 is increased. As the cushion cover 8 splits along the tier line, the cushion 4 is greatly inflated toward the front of the passenger seat.

그런데, 이와 같이 구성된 종래의 조수석 에어백에서는 쿠션(4)이 앞으로 접혀져 있고 별도의 구조물이 없이 쿠션 전개시 승객 쪽으로 쿠션이 향하도록 되어 있으므로, 비정상적으로 착좌된 승객에게는 치명적 상해가 가해질 수 있다는 문제점이 있었다. However, in the conventional passenger seat airbag configured as described above, since the cushion 4 is folded forward and the cushion is directed toward the passenger when the cushion is deployed without a separate structure, there is a problem that a fatal injury may be inflicted on an abnormally seated passenger. .

따라서, 본 발명은 상기 문제점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 쿠션의 전개시 그 전개방향을 분산하므로써 비정상적으로 착좌된 승객의 상해를 방지하는 외부 띠를 가지는 조수석 에어백을 제공하는 데 있다.Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a passenger seat airbag having an outer belt that prevents injuries of passengers seated abnormally by dispersing its deployment direction when the cushion is deployed. .

상기 목적을 달성하기 위한 본 발명에 따른 외부띠를 가지는 조수석 에어백은, 하우징의 하측에는 인플레이터가 내장되고, 하우징의 상측에는 쿠션이 접혀져 결합되며, 상기 쿠션을 쿠션커버가 감싸고 있는 조수석 에어백에 있어서, 상기 쿠션 커버의 외부 중간에는 에어 백의 길이방향을 따라 외부 띠가 둘러져 고정되고, 쿠션은 상기 외부 띠를 기준으로 하여 양측으로 나누어져 접혀져 있는 것을 특징으로 한다. In the passenger seat airbag having an outer band according to the present invention for achieving the above object, the inflator is built in the lower side of the housing, the cushion is folded and coupled to the upper side of the housing, the passenger seat airbag wrapped around the cushion cover, An outer band is fixed around the outer middle of the cushion cover along the longitudinal direction of the air bag, and the cushion is divided into two sides based on the outer band and folded.

상기 외부 띠는 상기 접혀진 상태의 쿠션 높이 보다 높은 공간을 둘러싸는 길이로 이루어져 상기 쿠션 커버에 맞닿게 쳐져 있다.The outer strip has a length surrounding a space higher than the height of the cushion in the folded state and is in contact with the cushion cover.

상기 외부 띠의 중간에는 쿠션의 전개시 용이하게 끊어지도록 티어 라인이 형성되어 있다.A tier line is formed in the middle of the outer band so as to easily break when the cushion is deployed.

이하, 첨부된 도면을 참조하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

도3는 본 발명에 따른 조수석 에어백의 쿠션이 접힌 상태를 나타내는 단면도이다. 조수석 에어백의 하우징 및 인플레이터의 구조는 종래와 동일하므로 설명을 생략한다. 3 is a cross-sectional view showing a folded state of the cushion of the passenger seat airbag according to the present invention. Since the structure of the passenger seat airbag housing and the inflator is the same as in the prior art, description thereof is omitted.

도3에 도시한 바와 같이 본 발명의 쿠션(14, 14')은 폭방향 양측으로 나누어져 2개로 분리되어 있으며, 상기 쿠션(14, 14')은 상, 하로 접혀진 상태에서 쿠션 커버(18)에 의해 감싸져 있다.As shown in Fig. 3, the cushions 14 and 14 'of the present invention are divided into two sides in the width direction and separated into two, and the cushions 14 and 14' are folded up and down, and the cushion cover 18 is folded. Wrapped by

상기 쿠션 커버(18)의 외부 중간에는 에어 백의 길이방향을 따라 외부 띠(22)가 둘러져 고정되고, 쿠션(14, 14')은 상기 외부 띠(22)를 기준으로 하여 양측으로 나누어져 접혀져 있다. 도3 및 후술하는 도5에서 상기 외부 띠(22)는 외측에서 본 상태를 나타내었다.The outer band 22 is enclosed and fixed in the outer middle of the cushion cover 18 along the longitudinal direction of the air bag, and the cushions 14 and 14 'are divided on both sides with respect to the outer band 22 and folded. . 3 and 5 to be described later, the outer band 22 shows a state seen from the outside.

도4는 본 발명에 의한 조수석 에어백의 길이방향을 나타내는 측면도인데, 상기 외부 띠(22)의 실제 길이를 나타내기 위해 쿠션(14, 14')이 전개되어 외부 띠가 끊어지기 직전에 상기 외부띠(22)와 쿠션(14, 14')이 가상적으로 맞닿아 있는 상태의 외부 띠(22)의 형태를 표시하고 있다. 실제로 상기 외부 띠(22)는 쳐져서 상기 쿠션 커버(18)의 상면에 닿아 있게 된다.Figure 4 is a side view showing the longitudinal direction of the passenger seat airbag according to the present invention, in order to show the actual length of the outer band 22, the cushions 14, 14 'is deployed, just before the outer band is broken, the outer band The form of the outer strip | belt 22 in the state which the 22 and the cushions 14 and 14 'virtually contact | abut is shown. Indeed, the outer strip 22 is struck and is in contact with the top surface of the cushion cover 18.

즉, 상기 외부 띠(22)는 상기 접혀진 상태의 쿠션 높이보다 높은 공간을 둘러싸는 길이로 이루어져 상기 쿠션 커버(18)에 맞닿게 쳐져 있다.In other words, the outer strap 22 has a length surrounding a space higher than the height of the cushion in the folded state, and is in contact with the cushion cover 18.

상기 외부 띠(22)의 길이는 상기 접혀진 쿠션(14, 14')의 높이의 약 2배에 해당하는 공간을 둘러싸는 길이로 되어 있는 것이 바람직하다.The length of the outer strip 22 is preferably a length surrounding a space corresponding to about twice the height of the folded cushions 14, 14 ′.

상기 외부 띠(22)의 중간에는 쿠션(14, 14')의 전개시 용이하게 끊어지도록 티어 라인(22a)이 형성되어 있다. 상기 티어 라인(22a)은 상기 외부 띠(22)의 폭방향으로 형성되어 있다.In the middle of the outer band 22, a tier line 22a is formed so as to be easily broken when the cushions 14 and 14 'are deployed. The tier line 22a is formed in the width direction of the outer band 22.

이와 같이 구성된 본 발명에 의한 조수석 에어백에서, 차량 충돌시 ECU로부터 에어백 작동 신호를 받으면 에어백의 인플레이터에 점화가 이루어져 폭발하면서 쿠션(14, 14')이 부풀게 되고, 상기 쿠션(14, 14')의 팽창력에 의해 쿠션 커버(18)가 도시하지 않은 티어 라인을 따라 갈라지게 되고, 쿠션(14, 14')이 도4에서 도시한 외부 띠(22)의 위치까지 팽창하게 되어 외부 띠(22)가 티어 라인(22a)에서 끊어지게 되며, 쿠션(14, 14')은 더욱 부풀어 조수석 방향으로 팽창하게 된다.In the passenger seat airbag according to the present invention configured as described above, when an airbag operation signal is received from the ECU during a vehicle crash, the inflator of the airbag ignites and explodes, causing the cushions 14 and 14 'to swell. The expansion force causes the cushion cover 18 to split along the tier line (not shown), and the cushions 14 and 14 'expand to the position of the outer band 22 shown in FIG. It is broken at the tier line 22a, and the cushions 14 and 14 'are more inflated to expand in the passenger seat direction.

이때, 상기 각 쿠션(14, 14')은 도5에 도시한 바와 같이 외부 띠(22)를 기준으로 하여 서로 반대방향의 양측(화살표 방향)으로 전개된다. 따라서, 쿠션의 전개방향이 분산되므로 비정상적으로 착좌된 승객의 상해를 방지할 수 있는 것이다. 상기 외부 띠(22)는 상, 하로 접혀있는 쿠션(14, 14')의 전개시 일정한 압력까지 유지해 주면서 접혀 있는 쿠션의 전개방향을 분산시키는 역할을 한다. At this time, each of the cushions 14 and 14 'is developed on both sides (arrow direction) in opposite directions with respect to the outer band 22 as shown in FIG. Therefore, since the deployment direction of the cushion is dispersed, it is possible to prevent injury of passengers seated abnormally. The outer band 22 serves to disperse the deployment direction of the folded cushion while maintaining up to a constant pressure when the up and down folded cushions 14 and 14 'are deployed.

도5의 외부 띠(22)는 전개되는 쿠션(14, 14')에 의해 외부 띠(22)가 끊어지기 직전의 상태를 나타낸다. The outer band 22 in Fig. 5 shows a state just before the outer band 22 is broken by the cushions 14 and 14 'that are developed.

본 발명에 의한 외부 띠를 가지는 조수석 에어백에 의하면, 외부 띠가 쿠션의 전개시 일정한 압력까지 유지해 주면서 쿠션의 전개방향을 분산하므로써 비정상적으로 착좌된 승객의 상해를 방지하는 효과가 있다.According to the passenger seat airbag having the outer band according to the present invention, the outer band is kept up to a constant pressure when the cushion is deployed, thereby dispersing the cushion deployment direction, thereby preventing injuries of abnormally seated passengers.

도1은 종래 조수석 에어백을 나타낸 개략 단면도, 1 is a schematic cross-sectional view showing a conventional passenger airbag;

도2는 종래 조수석 에어백의 쿠션이 접힌 상태를 나타내는 단면도,2 is a cross-sectional view showing a folded state of a conventional passenger seat airbag;

도3은 본 발명에 따른 조수석 에어백의 쿠션이 접힌 상태를 나타내는 단면도,3 is a cross-sectional view showing a folded state of the passenger seat airbag according to the present invention;

도4는 도3의 쿠션의 길이 방향을 나타내는 측면도,Figure 4 is a side view showing the longitudinal direction of the cushion of Figure 3,

도5는 본 발명에 따른 조수석 에어백의 쿠션의 전개시의 방향을 나타내는 설명도이다. Fig. 5 is an explanatory diagram showing a direction when the cushion of the passenger seat airbag according to the present invention is deployed.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

14, 14' : 쿠션 18 : 쿠션 커버14, 14 ': cushion 18: cushion cover

22 : 외부 띠22: outer strip

Claims (3)

하우징의 하측에는 인플레이터가 내장되고, 하우징의 상측에는 쿠션이 접혀져 결합되며, 상기 쿠션을 쿠션커버가 감싸고 있는 조수석 에어백에 있어서, In the lower side of the housing is built in the inflator, the upper side of the housing is a cushion folded and coupled, the passenger seat airbag in which the cushion cover wraps, 상기 쿠션 커버의 외부 중간에는 에어 백의 길이방향을 따라 외부 띠가 둘러져 고정되고, Outside the outer cover of the cushion cover in the longitudinal direction of the air bag is encircled and fixed, 쿠션은 상기 외부 띠를 기준으로 하여 양측으로 나누어져 접혀져 있는 것을 특징으로 하는 외부 띠를 가지는 조수석 에어백. A passenger seat airbag having an outer band, wherein the cushion is divided into two sides based on the outer band. 제1항에 있어서, The method of claim 1, 상기 외부 띠는, 상기 접혀진 상태의 쿠션 높이보다 높은 공간을 둘러싸는 길이로 이루어져 상기 쿠션 커버에 맞닿게 쳐져 있는 것을 특징으로 하는 외부 띠를 가지는 조수석 에어백.And said outer girdle has a length surrounding a space higher than the height of the cushion in the folded state and is in contact with said cushion cover. 제1항에 있어서,The method of claim 1, 상기 외부 띠의 중간에는 쿠션의 전개시 용이하게 끊어지도록 티어 라인이 형성되어 있는 것을 특징으로 하는 외부 띠를 가지는 조수석 에어백.A passenger seat airbag having an outer band, wherein a tier line is formed in the middle of the outer band so as to easily break when the cushion is deployed.
KR1020040003840A 2004-01-19 2004-01-19 Passenger air bag with outer tether KR20050076047A (en)

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