KR19990047084A - Airbag - Google Patents

Airbag Download PDF

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Publication number
KR19990047084A
KR19990047084A KR1019970065311A KR19970065311A KR19990047084A KR 19990047084 A KR19990047084 A KR 19990047084A KR 1019970065311 A KR1019970065311 A KR 1019970065311A KR 19970065311 A KR19970065311 A KR 19970065311A KR 19990047084 A KR19990047084 A KR 19990047084A
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KR
South Korea
Prior art keywords
airbag
collision
inflator
gas chamber
amount
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Application number
KR1019970065311A
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Korean (ko)
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KR100261920B1 (en
Inventor
강석우
Original Assignee
오상수
만도기계 주식회사
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Priority to KR1019970065311A priority Critical patent/KR100261920B1/en
Publication of KR19990047084A publication Critical patent/KR19990047084A/en
Application granted granted Critical
Publication of KR100261920B1 publication Critical patent/KR100261920B1/en

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    • 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
    • B60R21/26—Inflatable 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
    • B60R21/263—Inflatable 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 using a variable source, e.g. plural stage or controlled output
    • 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
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
    • 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
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • 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
    • B60R21/26—Inflatable 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
    • B60R21/264—Inflatable 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 using instantaneous generation of gas, e.g. pyrotechnic
    • 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
    • B60R21/26—Inflatable 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
    • B60R21/268—Inflatable 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 using instantaneous release of stored pressurised gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors
    • B60Y2400/3042—Collision sensors

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

Abstract

본 발명은 에어백에 관한 것으로서, 상세하게는 운전석 스티어링휠에 가스챔버와 화약식 인플레이터가 마련된 하이브리드 인플레이터를 구비하는 에어백에 관한 것이다.The present invention relates to an airbag, and more particularly, to an airbag having a hybrid inflator provided with a gas chamber and an explosive inflator in a driver's seat steering wheel.

본 발명에 따른 에어백에 의하여, 운전석 쪽의 에어백에 사용되는 하이브리드 인플레이터의 가스저장탱크 형성할 때 스티어링휠의 림을 속이 비어있는 공동파이프로 형성하여 그 속에 가스챔버를 형성한다. 그리하여 화약식 인플레이터와 더불어 효과적으로 하이브리드 인플레이터를 형성할 수 있으며, 에어백을 팽창시킬 때 차량의 충돌량에 따른 능동적인 제어가 가능하다.According to the airbag according to the present invention, when forming the gas storage tank of the hybrid inflator used for the airbag on the driver's side, the rim of the steering wheel is formed of hollow hollow pipe to form a gas chamber therein. Thus, in combination with the explosive inflator, the hybrid inflator can be effectively formed, and active control according to the amount of collision of the vehicle when inflating the airbag is possible.

Description

에어백Airbag

본 발명은 에어백에 관한 것으로서, 상세하게는 운전석 스티어링휠에 가스챔버와 화약식 인플레이터가 마련된 하이브리드 인플레이터를 구비하는 에어백에 관한 것이다.The present invention relates to an airbag, and more particularly, to an airbag having a hybrid inflator provided with a gas chamber and an explosive inflator in a driver's seat steering wheel.

자동차문화가 발달하면서 자동차 탑승자를 보호하기 위한 여러 가지 안전장치들이 개발되었는데 그 중의 하나가 에어백이다. 에어백은 차량이 충돌하였을 때 탑승자의 머리 및 흉부를 보호하여 탑승자가 2차충돌을 하는 것을 방지한다.As the car culture developed, many safety devices were developed to protect the occupants, one of which is the airbag. The airbag protects the occupant's head and chest when the vehicle crashes, preventing the occupant from secondary collision.

도 1은 종래의 에어백의 블럭도이다.1 is a block diagram of a conventional airbag.

도 2는 종래의 에어백의 제어 흐름도이다.2 is a control flowchart of a conventional airbag.

먼저 자동차가 충돌을 하게되면 충돌감지부(10)에서 충격량을 감지한다(S10). 충돌감지부(10)는 지(G)센서등을 이용하여 충격정도를 감지한다. 충돌감지부(10)는 충격량을 감지하여 마이컴(20)으로 출력한다.First, when the car collides with the collision detection unit 10 detects the impact amount (S10). The collision detection unit 10 detects the degree of impact by using a sensor (G). The collision detection unit 10 detects the impact amount and outputs the impact amount to the microcomputer 20.

마이컴(20)에서는 충돌감지부(10)로부터의 출력을 입력으로 받아서 충돌감지부(10)가 감지한 충돌감지량이 임계충돌량보다 크거나 같은지를 판단한다(S20). 판단(S20)에서 충돌감지량이 임계충돌량보다 작다면 마이컴(20)은 경미한 충돌이라고 판단하여 에어백(40)을 팽창시키지 않고 종료를 한다.The microcomputer 20 receives the output from the collision detection unit 10 as an input and determines whether the collision detection amount detected by the collision detection unit 10 is greater than or equal to the threshold collision amount (S20). If the collision detection amount in the determination (S20) is smaller than the critical collision amount, the microcomputer 20 determines that the collision is a minor collision and ends without inflating the airbag 40.

그런데 판단(S20)에서 충돌감지량이 임계충돌량보다 크거나 같다면 마이컴(20)은 인플레이터(30)를 구동시키기 위한 신호를 출력한다(S30). 인플레이터(30)는 마이컴(20)으로부터의 출력에 의하여 온(ON)된다. 인플레이터(30)는 온(ON)되면서 내부의 가스발생제에 의하여 순간적으로 많은 량의 가스가 발생시킨다. 가스발생제에 의하여 발생된 가스는 에어백(40)을 팽창시킨다(S40).However, if the collision detection amount is greater than or equal to the threshold collision amount in the determination S20, the microcomputer 20 outputs a signal for driving the inflator 30 (S30). The inflator 30 is turned on by the output from the microcomputer 20. While the inflator 30 is ON, a large amount of gas is instantaneously generated by an internal gas generating agent. Gas generated by the gas generating agent inflates the airbag 40 (S40).

그런데 종래에는 운전석 쪽의 에어백에 화약인플레이터와 가스인플레이터를 가지는 하이브리드형식의 인플레이터를 장착하고자 하였을 때 가스챔버를 설치할 공간이 부족하였다. 그리하여 화약인플레이터만을 장착하였다. 화약인플레이터만을 장착함에 따라 충돌속도에 따른 에어백의 팽창정도의 능동적인 제어가 어려웠다.However, in the related art, when a hybrid inflator having a gunpowder inflator and a gas inflator was mounted on an airbag on the driver's side, there was a lack of space for installing a gas chamber. Thus only the gunpowder plate was mounted. As only the gunpowder plate was installed, it was difficult to actively control the degree of inflation of the airbag according to the collision speed.

본 발명은 상기한 문제를 해결하기 위하여, 운전석 스티어링휠에 가스챔버와 화약식 인플레이터가 마련된 하이브리드 인플레이터를 구비하는 에어백을 제공하고자 하는 것이다.The present invention is to provide an airbag having a hybrid inflator provided with a gas chamber and a powder inflator in the driver's steering wheel to solve the above problems.

도 1은 종래의 에어백의 블럭도이다.1 is a block diagram of a conventional airbag.

도 2는 종래의 에어백의 제어 흐름도이다.2 is a control flowchart of a conventional airbag.

도 3은 본 발명에 따른 에어백의 블럭도 이다.3 is a block diagram of an airbag according to the present invention.

도 4는 본 발명에 따른 에어백의 제어 흐름도이다.4 is a control flowchart of an airbag according to the present invention.

도 5는 본 발명에 따른 스티어링휠의 평면도이다.5 is a plan view of a steering wheel according to the present invention.

도 6은 도5의 본 발명에 따른 스티어링휠의 A-A'의 단면도이다.6 is a cross-sectional view taken along line AA ′ of the steering wheel of the present invention of FIG. 5.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10:충돌감지부 40:에어백 50:마이컴10: collision detection unit 40: airbag 50: microcomputer

60:가스챔버밸브 70:가스챔버 80:메인인플레이터60: gas chamber valve 70: gas chamber 80: main platen

상기 목적을 달성하기 위한 본 발명은, 차량의 충돌을 감지하는 충돌감지부, 차량의 진행방향을 조정할 수 있는 스티어링휠, 스티어링휠에 마련되어 가스를 저장하는 가스챔버, 스티어링휠에 마련된 인플레이터, 충돌감지부가 감지한 충돌량에 따라서 에어백이 팽창하도록 가스챔버와 상기 인플레이터를 제어하는 마이컴을 구비하는 것을 특징으로 구성이다.The present invention for achieving the above object, a collision detection unit for detecting a collision of the vehicle, a steering wheel for adjusting the traveling direction of the vehicle, a gas chamber provided in the steering wheel to store gas, inflator provided in the steering wheel, collision detection And a microcomputer for controlling the gas chamber and the inflator so that the airbag is inflated according to the detected amount of collision.

이하에서는 첨부한 도면을 참조하여 양호한 실시 예를 상세하게 설명하겠다.Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 에어백의 블럭도이다.3 is a block diagram of an airbag according to the present invention.

도 4는 본 발명에 따른 에어백의 제어 흐름도이다.4 is a control flowchart of an airbag according to the present invention.

도 5는 본 발명에 따른 스티어링휠의 평면도이다.5 is a plan view of a steering wheel according to the present invention.

도 6은 도 5의 본 발명에 따른 스티어링휠의 A-A'의 단면도이다.6 is a cross-sectional view taken along line AA ′ of the steering wheel according to the present invention of FIG. 5.

자동차가 충돌을 하게되면 충돌감지부(10)에서 충격량을 감지한다(S100). 충돌감지부(10)는 지(G)센서등을 이용하여 충격정도를 감지한다. 충돌감지부(10)는 충격량을 감지하여 마이컴(50)으로 출력한다.When the vehicle collides with the collision detection unit 10 detects the impact amount (S100). The collision detection unit 10 detects the degree of impact by using a sensor (G). The collision detection unit 10 detects the impact amount and outputs the impact amount to the microcomputer 50.

마이컴(50)은 충돌감지부(10)로부터의 출력을 입력으로 받아서 충돌량의 정도를 판단한다. 먼저 충돌감지량이 제1충돌임계량보다 큰지를 판단한다(S110). 만약 판단(S110)에서 충돌감지량이 제1충돌감지량보다 작다면 마이컴(50)은 충돌량이 아주 미비하여 차량의 탑승자가 안전한 것으로 판단하여 에어백(40)을 팽창시키지 않고 종료를 한다.The microcomputer 50 receives the output from the collision detecting unit 10 as an input and determines the degree of collision. First, it is determined whether the collision detection amount is greater than the first collision threshold (S110). If the collision detection amount in the determination (S110) is less than the first collision detection amount, the microcomputer 50 determines that the collision amount is very insufficient and the occupant of the vehicle is safe and ends without inflating the airbag 40.

그런데 판단(S110)에서 충돌감지량이 제1충돌임계량보다 크다면 마이컴(50)은 충돌감지량이 제1충돌임계량보다 크거나 같고 제2충돌임계량보다 작은지를 판단한다(S120). 판단에서 충돌감지량이 제1충돌임계량보다 크거나 같고 제2충돌임계량보다 작다면 마이컴(50)은 저속충돌이라고 판단하여 가스챔버밸브(60)를 구동시키기 위한 신호를 출력한다. 가스챔버밸브(60)는 마이컴(50)으로부터의 출력에 의하여 온(ON)된다(S130). 가스챔버밸브(60)가 온 됨에 따라서 스티어링휠(90)에 구비되어 있는 가스챔버(70)에 들어있는 가스가 에어백(40)으로 들어간다. 그리하여 에어백(40)은 팽창한다(S140). 도 5의 A-A'단면을 나타낸 도 6을 참조하면, 스티어링휠(90)의 내부는 속이 비어있는 공동파이프(91)이다. 즉, 스티어링휠의 림(Rim)의 공동파이프(91)의 빈 공간이 가스챔버(70)가 된다. 공동파이프(91)는 수지(92)로 덮혀있다.However, if the collision detection amount in the determination (S110) is greater than the first collision threshold, the microcomputer 50 determines whether the collision detection amount is greater than or equal to the first collision threshold and smaller than the second collision threshold (S120). If the collision detection amount is greater than or equal to the first collision threshold and smaller than the second collision threshold, the microcomputer 50 determines that the collision is low speed and outputs a signal for driving the gas chamber valve 60. The gas chamber valve 60 is turned on by the output from the microcomputer 50 (S130). As the gas chamber valve 60 is turned on, the gas contained in the gas chamber 70 of the steering wheel 90 enters the airbag 40. Thus, the airbag 40 is inflated (S140). Referring to FIG. 6, which is taken along line AA ′ of FIG. 5, the inside of the steering wheel 90 is a hollow cavity 91. That is, the empty space of the cavity pipe 91 of the rim Ri of the steering wheel becomes the gas chamber 70. The cavity pipe 91 is covered with the resin 92.

그런데 판단(S120)에서 충돌감지량이 제1충돌임계량과 제2충돌임계량사이의 값이 아니라면 마이컴(50)은 충돌감지량이 제2충돌임계량보다 크거나 같고 제3충돌임계량보다 작은지를 판단한다(S150).However, if the collision detection amount is not the value between the first collision threshold and the second collision threshold in the determination (S120), the microcomputer 50 determines whether the collision detection amount is greater than or equal to the second collision threshold and smaller than the third collision threshold (S150). ).

판단(S150)에서 충돌감지량이 제2충돌임계량보다 크거나 같고 제3충돌임계량보다 작다면 마이컴(50)은 중속충돌이라고 판단하여 메인인플레이터(80)를 구동시키기 위한 신호를 출력한다. 메인인플레이터(80)는 마이컴(50)으로부터의 출력에 의하여 온(ON)된다(S160). 메인인플레이터(80)는 온(ON)되면서 내부의 가스발생제에 의하여 순간적으로 많은 량의 가스가 발생시킨다. 가스발생제에 의하여 발생된 가스는 에어백(40)을 팽창시킨다(S140).If the collision detection amount in the determination (S150) is greater than or equal to the second collision threshold and less than the third collision threshold, the microcomputer 50 determines that it is a medium-speed collision and outputs a signal for driving the main inflator 80. The main inflator 80 is turned on by the output from the microcomputer 50 (S160). While the main inflator 80 is ON, a large amount of gas is instantaneously generated by an internal gas generating agent. Gas generated by the gas generating agent inflates the airbag 40 (S140).

그런데 판단(S150)에서 충돌감지량이 제2충돌임계량과 제3충돌임계량사이의 값이 아니라면 마이컴(50)은 고속충돌이라고 판단한다. 고속충돌이라고 판단되면 마이컴(50)은 가스챔버밸브(60)와 메인인플레이터(80)를 구동시키기 위한 신호를 출력하여 구동시킨다(S151). 그에 따라 가스챔버밸브(60)는 마이컴(50)으로부터의 출력에 의하여 온(ON)된다. 가스챔버밸브(60)가 온(ON)됨에 따라서 스티어링휠(90)에 구비되어 있는 가스챔버(70)에 들어있는 가스가 에어백(40)으로 들어간다. 그리고 동시에 메인인플레이터(80)가 온(ON)되면서 내부의 가스발생제에 의하여 순간적으로 많은 량의 가스가 발생되고 발생된 가스는 에어백(40)으로 들어간다. 그리하여 스티어링휠(90)의 가스챔버(70)에 들어있던 가스와 메인인플레이터(80)에서 발생된 가스에 의하여 에어백(40)은 팽창된다(S140).However, if the collision detection amount in the determination (S150) is not a value between the second collision threshold and the third collision threshold, the microcomputer 50 determines that it is a high speed collision. If it is determined that the high-speed collision, the microcomputer 50 outputs and drives a signal for driving the gas chamber valve 60 and the main inflator 80 (S151). Accordingly, the gas chamber valve 60 is turned ON by the output from the microcomputer 50. As the gas chamber valve 60 is turned on, the gas contained in the gas chamber 70 of the steering wheel 90 enters the airbag 40. At the same time, as the main inflator 80 is turned on, a large amount of gas is instantaneously generated by the internal gas generating agent, and the generated gas enters the airbag 40. Thus, the airbag 40 is inflated by the gas generated in the gas chamber 70 of the steering wheel 90 and the gas generated in the main inflator 80 (S140).

이상에서 상세하게 설명한 바와 같이 본 발명에 따른 에어백에 의하여, 운전석 쪽의 에어백에 사용되는 하이브리드 인플레이터의 가스저장탱크 형성할 때 스티어링휠의 림을 속이 비어있는 공동파이프로 형성하여 그 속에 가스챔버를 형성한다. 그리하여 화약식 인플레이터와 더불어 효과적으로 하이브리드 인플레이터를 형성할 수 있으며, 에어백을 팽창시킬 때 차량의 충돌량에 따른 능동적인 제어가 가능하다.As described in detail above, when the gas storage tank of the hybrid inflator used for the airbag of the driver's seat is formed by the airbag according to the present invention, the rim of the steering wheel is formed of hollow hollow pipe to form a gas chamber therein. do. Thus, in combination with the explosive inflator, the hybrid inflator can be effectively formed, and active control according to the amount of collision of the vehicle when inflating the airbag is possible.

Claims (3)

차량의 충돌을 감지하는 충돌감지부,Collision detection unit for detecting a collision of the vehicle, 상기 차량의 진행방향을 조정할 수 있는 스티어링휠,A steering wheel for adjusting a traveling direction of the vehicle, 상기 스티어링휠에 마련되어 가스를 저장하는 가스챔버,A gas chamber provided at the steering wheel to store gas; 상기 스티어링휠에 마련된 인플레이터,An inflator provided in the steering wheel, 상기 충돌감지부가 감지한 충돌량에 따라서 에어백이 팽창하도록 상기 가스챔버와 상기 인플레이터를 제어하는 마이컴을 구비하는 것을 특징으로 하는 에어백.And a micom for controlling the gas chamber and the inflator to inflate the airbag according to the collision amount detected by the collision detection unit. 제 1항에 있어서,The method of claim 1, 상기 마이컴은 상기 충돌감지부가 감지한 상기 충돌량이 미리 설정된 제1임계충돌량과 제2임계충돌량사이의 값이면 상기 가스챔버에 저장된 상기 가스로 상기 에어백을 팽창시키고, 상기 충돌량이 미리 설정된 제2임계충돌량과 제3임계충돌량사이의 값이면 상기 인플레이터를 구동시켜 상기 에어백을 팽창시키고, 상기 충돌량이 미리 설정된 제2임계충돌량보다 큰 값이면 상기 가스챔버에 저장된 상기 가스와 상기 인플레이터를 구동시켜 에어백을 팽창시키는 것을 특징으로 하는 에어백.The micom expands the airbag with the gas stored in the gas chamber when the collision amount detected by the collision detection unit is a value between a first threshold collision amount and a second threshold collision amount, and the second collision amount is preset. If the value is between the critical collision amount and the third critical collision amount, the inflator is driven to inflate the airbag, and if the collision amount is greater than the preset second critical collision amount, the gas stored in the gas chamber and the inflator are driven. Airbag to inflate the airbag. 제 1항 또는 2항에 있어서,The method according to claim 1 or 2, 상기 스티어링휠은 내부가 비어있는 형태의 공동파이프로 이루어져 있으며 상기 공동파이프의 내부가 상기 가스가 저장된 상기 가스챔버인 것을 특징으로 하는 에어백.The steering wheel is an airbag, characterized in that the interior of the hollow hollow hollow pipe and the gas chamber is stored in the gas chamber.
KR1019970065311A 1997-12-02 1997-12-02 Air bag KR100261920B1 (en)

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