KR20020054065A - Impact Absorbing Apparatus of Car - Google Patents

Impact Absorbing Apparatus of Car Download PDF

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Publication number
KR20020054065A
KR20020054065A KR1020000082688A KR20000082688A KR20020054065A KR 20020054065 A KR20020054065 A KR 20020054065A KR 1020000082688 A KR1020000082688 A KR 1020000082688A KR 20000082688 A KR20000082688 A KR 20000082688A KR 20020054065 A KR20020054065 A KR 20020054065A
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KR
South Korea
Prior art keywords
bumper
shock
vehicle
housing
impact
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KR1020000082688A
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Korean (ko)
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KR100376473B1 (en
Inventor
이승훈
Original Assignee
이계안
현대자동차주식회사
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Priority to KR10-2000-0082688A priority Critical patent/KR100376473B1/en
Publication of KR20020054065A publication Critical patent/KR20020054065A/en
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Publication of KR100376473B1 publication Critical patent/KR100376473B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R19/20Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24Arrangements for mounting bumpers on vehicles
    • B60R19/38Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles
    • B60R19/40Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles in the direction of an obstacle before a collision, or extending during driving of the vehicle, i.e. to increase the energy absorption capacity of the bumper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B60R19/483Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
    • 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
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013Electrical 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
    • B60R21/0136Electrical 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Dampers (AREA)

Abstract

PURPOSE: An impact damping apparatus for a vehicle is provided to prevent a driver and an occupant from being damaged when a vehicle accident occurs by moving a damping member in a reverse direction of the impact. CONSTITUTION: A frame(3) is installed in a chassis panel(2) for supporting a bumper(1). A bumper beam(4) is installed at a front of the frame(3) and a bumper cover(6) is installed at a front of the bumper beam(4). An absorber(5) is accommodated between the bumper beam(4) and the bumper cover(6) to absorb the impact. A fixing member(10) is fixed at a lower portion of the chassis panel(2). A housing(11) having a recess(12) is formed at one side of the fixing member(10). A gas generator(13) is accommodated in the recess(12) of the housing(11). A damping member(14) is provided at one side of the gas generator(13).

Description

자동차의 충격완충장치{Impact Absorbing Apparatus of Car}Impact Absorbing Apparatus of Car}

본 발명은 자동차의 충격완충장치에 관한 것으로서, 더욱 상세하게는 자동차차체패널의 일 측에 충격을 감지할 수 있는 충격감지센서와 가스 발생기를 설치함과 동시에 그 가스 발생기를 설치하여 차량이 정면 충돌 시 충격감지센서에서 그 충격이 감지되면 가스 발생기가 작동되어 완충부재를 충돌방향과 반대 방향으로 이동시킴으로써 자동차 및 탑승자에게 주어지는 충격력을 최소화 할 수 있는 자동차의 충격완충장치에 관한 것이다.The present invention relates to a shock absorber of an automobile, and more particularly, a shock sensor and a gas generator for detecting an impact on one side of a vehicle body panel and a gas generator are installed at the same time, so that the vehicle is in front of the vehicle. When the shock is detected in the shock sensor during the operation of the gas generator to move the shock absorbing member in the opposite direction to the impact direction relates to a shock absorber of the vehicle that can minimize the impact force given to the vehicle and the occupant.

근래에 산업의 발달로 인하여 자동차의 보급대수가 급격히 증가하면서, 우리나라도 자동차 보유대수 천만 대 시대에 접어들고 있다. 그러나 자동차 문화는 자동차 보유대수에 부응하지 못하고 아직까지는 후진국 수준에 머무르고 있는 바, 특히 과속 및 안전거리 미 확보 등으로 인한 자동차간의 전후 충돌사고는 주위에서 흔히 볼 수 있는 생활의 일부분이 되고 있다.Recently, with the development of the industry, the number of automobiles is rapidly increasing, and Korea is entering the era of 10 million automobiles. However, the automobile culture has not been able to meet the number of cars owned and still remains at the level of underdeveloped countries. Especially, the postwar collision between cars due to speeding and lack of safety distance is a part of life that can be commonly seen around.

이러한 자동차 충돌사고로 인한 자동차손상 및 인명손실은 상당한 것이어서 충돌 시 자동차 및 운전자에게 전달되는 충격을 최소화할 수 있는 완충장치로서, 자동차의 전/후방에 범퍼를 설치하고 있다.Car damage and loss of life due to such a car crash is a significant shock absorber that can minimize the impact transmitted to the car and the driver in the event of a collision, bumpers are installed in the front and rear of the car.

상기 범퍼는 자동차가 부딪혔을 때 그 충격을 흡수하는 역할을 하는 것으로 초기에는 강철 재료 보디에서 약간 튀어나온 정도였으나, 대형 범퍼가 사용되게 되어 현재는 에너지 흡수 범퍼라고 불리는 것이 일반화되어 있다.The bumper serves to absorb the impact when the vehicle is hit, and was initially slightly protruded from the steel material body, but large bumpers are now used, and it is now commonly called an energy absorbing bumper.

상기 범퍼는 우레탄 등이 쓰이며, 충격 흡수의 정도가 커져 있으나 동시에 보디와 일체화한 디자인 등에 의하여 장식을 겸한 부품으로 되어 가는 추세이다.The bumper is made of urethane and the like, and the degree of shock absorption is increased, but at the same time, the bumper is becoming a part that also serves as a decoration by a design integrated with a body.

상기 범퍼의 기본구성은 범퍼 페이스(범퍼 커버)와, 상기 범퍼 페이스의 형상유지와 충돌시의 충격을 완화하고 형상복원의 기능을 가진 옵서버와, 형상유지와충돌시의 에너지를 탄성변형 또는 소성변형을 통하여 흡수하는 백업빔(리인포스먼트)으로 이루어진다.The basic configuration of the bumper is a bumper face (bumper cover), an observer having a function of restoring the impact of the shape and collision of the bumper face and restoring the shape, and the energy of the shape maintenance and collision elastic deformation or plastic deformation It consists of a backup beam (reinforcement) that absorbs through.

최근에는 범퍼 페이스, 라디에이터 그릴 밸런스 패널, 프론트 엔드 패널 등을 일체화하여 경량화도 도모한 페이샤와 에너지 흡수부재, 백업빔으로 되는 구성이 증가하고 있다.In recent years, there has been an increase in the construction of a facilitator, an energy absorbing member, and a backup beam, which incorporates a bumper face, a radiator grill balance panel, a front end panel, and the like, to reduce the weight.

이러한 범퍼를 범퍼 페이샤의 재질에 따라 분류하면 스틸범퍼, 플라스틱범퍼로 나눌 수 있고 플라스틱 범퍼는 RIM(Reaction Injection Molding : 반응사출)성형법에 의한 우레탄 범퍼, 엔지니어링 플라스틱 범퍼, PP범퍼 등이 있다.These bumpers can be classified into steel bumpers and plastic bumpers according to the materials of the bumper phases. Plastic bumpers include urethane bumpers, engineering plastic bumpers, and PP bumpers by the Reaction Injection Molding (RIM) molding method.

범퍼에서 요구되는 가장 중요한 성능중의 하나는 충격흡수정도이다. 충격흡수정도란 외부에서 충격이 가해질 때 그 충격의 흡수 량이 많고 적음으로 평가하는 것이다.One of the most important performances required for a bumper is its degree of shock absorption. The shock absorption degree is evaluated as the amount of absorption of the shock when the impact is applied from the outside is large and small.

범퍼의 충격흡수정도가 적으면 강도가 강하여 충돌 시 변형 량은 적은 반면에 충돌 대상물(건물, 보행자)과 운전자 및 탑승자에게 가해지는 충격력이 크게 되는 것이다.When the bumper absorbs less impact, the strength is stronger, so the deformation amount is smaller during the collision, while the impact force applied to the collision object (building, pedestrian), the driver and the occupant is greater.

범퍼의 충격흡수정도가 크면 강도가 약하여 충돌 시 그 충격력의 일부를 흡수하므로 충돌 대상물(건물, 보행자)과 운전자 및 탑승자에게 가해지는 충격력이 약하게 되는 반면에 변형 량이 많게 되는 것이다.If the shock absorber of the bumper is large, the strength is weak and absorbs a part of the impact force in the collision, so that the impact force applied to the collision object (building, pedestrian), the driver and the occupant is weak, while the deformation amount is large.

도 1은 종래 범퍼를 나타낸 분해 사시도이고, 도 2은 종래 범퍼를 나타낸 단면도이다.1 is an exploded perspective view showing a conventional bumper, Figure 2 is a cross-sectional view showing a conventional bumper.

여기에서 참조되는 바와 같이 여기에서 참조되는 바와 같이 범퍼(1)를 지지하며 충돌에너지를 흡수하는 기본 골격인 차체패널(2)에 프레임(3)이 설치되고 그 프레임(3)의 전방에는 외부 하중을 제어하는 범퍼빔(4)이 설치되며 상기 범퍼빔(4)의 전방에는 외장재인 범퍼커버(6)가 설치된다.As referred to herein, a frame 3 is installed in the body panel 2, which is a basic frame that supports the bumper 1 and absorbs collision energy, as referred to herein, and an external load in front of the frame 3. A bumper beam 4 is installed to control the bumper beam 4, and a bumper cover 6, which is an exterior material, is installed in front of the bumper beam 4.

한편 상기 범퍼빔(4)과 범퍼커버(6)의 사이에는 충격을 흡수할 수 있는 재질로 이루어진 옵서버(5)가 내장되는 것이다.On the other hand, between the bumper beam 4 and the bumper cover 6, an observer 5 made of a material capable of absorbing shock is embedded.

따라서 종래에는 자동차가 주행 중 정면 출돌로 인하여 발생되는 충돌력은 범퍼 및 차체패널에서 흡수 완충되는 것이다.Therefore, in the related art, the collision force generated by the frontal running of the vehicle is absorbed and buffered in the bumper and the body panel.

즉 자동차가 저속 주행 시 발생되는 충돌력은 범퍼 및 차체패널에서 어느 정도 흡수하여 자동차 및 운전자와 탑승자를 보호할 수 는 있지만 고속 주행 시 발생되는 충돌력 즉, 범퍼 및 차체패널에서 완충할 수 있는 충돌력보다 큰 충돌력이 발생되면 그 충돌력은 자동차 및 운전자와 탑승자에게 전달되므로 차량의 손상은 물론 인명이 부상당하는 대형사고가 발생하게 되는 문제점이 있었다.In other words, while the impact force generated when the vehicle is traveling at low speed can be absorbed to some extent from the bumper and the body panel to protect the car, the driver and the occupant, the collision force generated during the high speed driving, that is, the bumper and the body panel which can be cushioned When a collision force greater than the force is generated, the collision force is transmitted to the car and the driver and the occupant, so that there is a problem that a large accident in which a person is injured as well as a person is injured.

본 발명은 상기한 문제점 해결하기 위하여 발명한 것으로서, 그 목적은 자동차의 정면충돌 시 그 충격력에 의해서 가스 발생기가 작동되어 완충부재를 충돌력 발생방향의 반대방향으로 이동시켜 완충할 수 있도록 함으로써, 충돌 시에 자동의 손상 및 운전자와 탑승자의 상해를 최소화 할 수 있는 자동차의 충격완충장치를 제공함에 있다.The present invention has been invented to solve the above problems, the object is that the gas generator is operated by the impact force during the frontal collision of the car to move the shock absorbing member in the opposite direction of the impact force generating direction to cushion, The present invention provides a shock absorber of a vehicle that can minimize auto damage and injury to a driver and a passenger.

도 1은 종래 범퍼를 나타낸 분해 사시도.1 is an exploded perspective view showing a conventional bumper.

도 2은 종래 범퍼를 나타낸 단면도.Figure 2 is a cross-sectional view showing a conventional bumper.

도 3은 본 발명에 따른 충격완충장치의 작동 전 상태를 나타낸 단면도.Figure 3 is a cross-sectional view showing a state before operation of the shock absorber according to the present invention.

도 4는 본 발명에 따른 충격완충장치의 작동 후 상태를 나타낸 단면도.Figure 4 is a cross-sectional view showing a state after the operation of the shock absorber according to the present invention.

도 5는 본 발명에 따른 충격완충장치가 작동 시 에너지 전달경로를 나타낸 개략도.Figure 5 is a schematic diagram showing the energy transmission path during operation of the shock absorber according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

2 : 차체패널10 : 고정부재2: body panel 10: fixing member

11 : 하우징12 : 수용홈11 housing 12 receiving groove

13 : 가스 발생기14 : 완충부재13 gas generator 14 buffer member

15 : 가이드바16 : 스토퍼15: guide bar 16: stopper

17 : ECU18 : 충격감지센서17: ECU18: shock detection sensor

상기 목적을 달성하기 위한 본 발명의 특징적인 구성을 설명하면 다음과 같다.Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

본 발명은 자동차의 전/후방에 설치되어 범퍼를 지지하는 차체패널의 일 측에 고정부재에 의해서 고정되며 내부에는 수용홈이 구비된 하우징이 마련되고, 그 하우징의 내부에는 가스 발생기에서 발생되는 가스에 의해서 하우징의 내부를 이동하도록 내장된 완충부재가 마련되며, 상기 차체패널에 장착되어 충격을 감지하는 충격감지센서가 마련되고, 그 충격감지센서에서 제공된 충격정보를 받아 상기 가스 발생기를 제어하도록 자동차에 갖춰진 ECU가 마련된 것을 특징으로 한다.The present invention is installed in the front / rear of the vehicle is fixed by a fixing member on one side of the body panel for supporting the bumper is provided with a housing having a receiving groove therein, the gas generated in the gas generator inside the housing A shock absorbing member is provided to move the inside of the housing by a shock absorber. The shock absorbing sensor is mounted on the vehicle body panel to sense a shock, and the vehicle is controlled to receive the shock information provided by the shock sensor. The ECU is provided with a.

또한 상기 완충부재의 외측 둘레면에는 가이드바가 마련되고 상기 하우징의 내측에는 가이드바의 이동을 제한하는 스토퍼가 마련된 것을 특징으로 한다.In addition, a guide bar is provided on the outer circumferential surface of the shock absorbing member, and a stopper is provided on the inner side of the housing to limit the movement of the guide bar.

이와 같은 특징을 갖는 본 발명을 상세하게 설명하면 다음과 같다.Referring to the present invention having such characteristics in detail as follows.

도 3은 본 발명에 따른 충격완충장치의 작동 전 상태를 나타낸 단면도이고, 도 4는 본 발명에 따른 충격완충장치의 작동 후 상태를 나타낸 단면도이며, 도 5는 본 발명에 따른 충격완충장치가 작동 시 에너지 전달경로를 나타낸 개략도 이다.3 is a cross-sectional view showing a state before the operation of the shock absorber according to the present invention, Figure 4 is a cross-sectional view showing a state after the operation of the shock absorber according to the present invention, Figure 5 is a shock absorber according to the present invention This is a schematic diagram showing the energy transfer path of the city.

여기에서 참조되는 바와 같이 여기에서 참조되는 바와 같이 범퍼(1)를 지지하며 충돌에너지를 흡수하는 기본 골격인 차체패널(2)에는 프레임(3)이 설치되고 그 프레임(3)의 전방에는 외부 하중을 제어하는 범퍼빔(4)이 설치되며 상기 범퍼빔(4)의 전방에는 외장재인 범퍼커버(6)가 설치된다.As referred to herein, a frame 3 is installed in the body panel 2, which is a basic frame that supports the bumper 1 and absorbs collision energy, as referred to herein, and an external load in front of the frame 3. A bumper beam 4 is installed to control the bumper beam 4, and a bumper cover 6, which is an exterior material, is installed in front of the bumper beam 4.

상기 범퍼빔(4)과 범퍼커버(6)의 사이에는 충격을 흡수할 수 있는 재질로 이루어진 옵서버(5)가 내장되는 것이다.Between the bumper beam 4 and the bumper cover 6, an observer 5 made of a material capable of absorbing shock is embedded.

또한 상기 차체패널(2)의 저부에는 고정부재(10)가 볼트 등의 체결부재를 매개로 고정되며 그 고정부재(10)의 일측에는 수용홈(12)이 형성된 하우징(11)이 마련되어 있다.In addition, a fixing member 10 is fixed to the bottom of the vehicle body panel 2 through a fastening member such as a bolt, and a housing 11 having a receiving groove 12 formed on one side of the fixing member 10 is provided.

상기 하우징(11)에 형성된 수용홈(12)의 내부에는 가스 발생기(13)가 내장되고 그 가스 발생기(13)의 일 측에는 수용홈(12)의 내부를 이동되면서 그 선단이 하우징(11)의 외측으로 노출 되도록 완충부재(14)가 내장되며 상기 완충부재(14)의 설치위치는 하우징(11)에서 인출될 때 충격에 의해서 차체패널(2) 측으로 변형되는 범퍼커버(6)에 접촉될 수 있는 위치를 유지하여야 한다.A gas generator 13 is embedded in the accommodating groove 12 formed in the housing 11, and one end of the gas generator 13 moves the inside of the accommodating groove 12 while the tip of the housing 11 is moved. The shock absorbing member 14 is embedded to be exposed to the outside, and the installation position of the shock absorbing member 14 may be in contact with the bumper cover 6 which is deformed toward the vehicle body panel 2 by impact when withdrawn from the housing 11. You must maintain the position.

상기 완충부재(14)의 외측 둘레면 일측에는 그 완충부재(14)의 이동을 안내하는 가이드바(15)를 형성하고 상기 하우징(11)의 내측면에는 가이드바(15)에 접촉되어 가이드바(15)의 이동거리 즉, 완충부재(14)의 출몰 위치를 제어하는 스토퍼(16)를 형성하는 것이 바람직하다.A guide bar 15 is formed on one side of the outer peripheral surface of the shock absorbing member 14 to guide the movement of the shock absorbing member 14, and the guide bar 15 is in contact with the guide bar 15 on the inner face of the housing 11. It is preferable to form the stopper 16 for controlling the moving distance of the 15, that is, the position at which the shock absorbing member 14 comes out.

그리고 상기 하우징(11)에 내장된 가스 발생기(13)는 차량에 갖춰진 ECU(Engine control unit)(17)에 전기적으로 연결되어 그 ECU(17)에 의해 제어될 수 있게 한다.The gas generator 13 embedded in the housing 11 is electrically connected to an engine control unit (ECU) 17 provided in a vehicle, so that the gas generator 13 can be controlled by the ECU 17.

또한 상기 차체패널(2)의 일 측에는 충격을 감지하는 충격감지센서(18)가 설치되고 이 충격감지센서(18)는 충돌력이 발생되면 그 충돌발생정보를 상기 ECU(17)에 제공하게 된다.In addition, one side of the body panel 2 is provided with a shock sensor 18 for detecting a shock and the impact sensor 18 provides the collision information to the ECU 17 when a collision force is generated. .

이와 같이 구성된 본 발명에 따른 자동차용 범퍼의 충격 완충장치 작용을 설명하면 다음과 같다.Referring to the shock absorber action of the bumper for automobile according to the present invention configured as described above are as follows.

도 3은 본 발명에 따른 충격완충장치의 작동 전 상태를 나타낸 단면도로서,이 상태에서 자동차가 저속으로 주행 중 충돌하는 경우 즉, 충격감지센서(18)에 감지되지 않을 정도의 약한 충돌력이 발생할 경우에는 그 충격력은 자동차의 범퍼에서 완충되는 것이다.Figure 3 is a cross-sectional view showing a state before the operation of the shock absorber according to the present invention, in this state, when the car crashes while driving at low speed, that is, a weak collision force that is not detected by the shock sensor 18 occurs In that case the impact force is cushioned in the bumper of the car.

또는 자동차가 고속으로 주행 중 충돌하는 경우 즉, 범퍼의 완충력보다 큰 충격력이 발생할 경우에는 그 충격력은 충격감지센서(18)에 의해 감지되고, 이 충격감지센서(18)는 그 충격발생정보를 ECU(17)에 제공한다.Alternatively, when the vehicle collides while driving at a high speed, that is, when an impact force greater than the buffer force of the bumper occurs, the impact force is detected by the shock sensor 18, and the shock sensor 18 displays the shock occurrence information in the ECU. Provided in 17.

상기 ECU(17)는 충격감지센서(18)로부터 제공받은 충격량 정보에 의해 가스 발생기(13)를 동작시키며, 이 가스 발생기(13)에서 발생된 가스는 완충부재(14)를 이동시키게 되어 상기 완충부재(14)의 선단은 도 5에 나타낸 바와 같이 하우징(11)의 외부로 인출되는 것이다.The ECU 17 operates the gas generator 13 by the impact amount information provided from the shock sensor 18, and the gas generated by the gas generator 13 moves the buffer member 14 to the buffer. The tip of the member 14 is drawn out of the housing 11 as shown in FIG. 5.

즉 자동차에 가해지는 충격력의 방향에 대하여 반대방향으로 이동하게 되는 것으로서 충격력을 완충하게 되는 것이다.That is, the shock force is buffered by moving in the opposite direction to the direction of the impact force applied to the vehicle.

이와 같이 본 발명 충격완충장치가 작동되어 자동차에 가해진 충격력인 에너지 전달경로를 나타낸 첨부도면 도 5를 참조하여 상세히 설명하면 다음과 같다.Thus, the present invention is described in detail with reference to the accompanying drawings showing the energy transmission path of the impact force applied to the vehicle by the impact buffer device is operated as follows.

여기에서From here

E : 자동차에 가해지는 충돌에너지(E=MV2/2)E: impact energy exerted on the car (E = MV 2/2)

E1 : 범퍼가 흡수한 에너지E1: energy absorbed by the bumper

E2 : 자동차의 차체패널이 흡수한 에너지E2: Energy absorbed by the body panels of automobiles

E3 : 충격완충장치가 흡수한 에너지E3: energy absorbed by the shock absorber

M : 차량의 질량M: mass of the vehicle

m1 : 범퍼의 질량m1: mass of bumper

m2 : 차체패널 및 엔진룸 상의 구조물의 질량m2: Mass of the structure on the body panel and engine

m3 : 충격완충장치의 질량이다.m3 is the mass of the shock absorber.

따라서 자동차가 저속으로 주행 중 정면충돌하여 발생되는 충돌에너지(E)는 범퍼가 흡수한 에너지(E1)와 자동차의 차체패널이 흡수한 에너지(E2)가 완충된 에너지가 운전자 및 탑승자에게 전달된다.Therefore, the collision energy E generated by the frontal collision while the vehicle is traveling at a low speed is transmitted to the driver and the passenger by the energy E1 absorbed by the bumper and the energy E2 absorbed by the vehicle body panel.

범퍼(1)에서 흡수되는 에너지(E1)와 자동차의 차체에서 일부의 에너지(E2)가 흡수되므로 상기 자동차가 저속으로 주행 중 충돌하여 충돌에너지(E)가 작을 경우 즉, 범퍼(1)에서 흡수할 수 있는 에너지(E1) 보다 적을 경우에는 충돌에너지(E)는 범퍼(1)에서 흡수 완충되므로 충격감지센서(18)에 충돌력이 감지되지 않게 되는 것이다.Since the energy E1 absorbed by the bumper 1 and a part of the energy E2 are absorbed by the vehicle body, when the vehicle collides while driving at a low speed and the collision energy E is small, that is, absorbed by the bumper 1 When the energy E1 is less than the collision energy E is absorbed and buffered in the bumper 1, the impact force is not detected by the impact sensor 18.

한편 자동차가 고속으로 주행 중 정면충돌하여 큰 충돌에너지(E)가 발생되면 충격감지센서(18)에 의해 감지되고, 그 충격감지센서(18)는 그 충격발생정보를 ECU(17)에 제공한다.On the other hand, if a large collision energy (E) is generated due to the frontal collision while the vehicle is traveling at a high speed, the shock sensor 18 is detected by the shock sensor 18, and the shock sensor 18 provides the shock generation information to the ECU 17. .

상기 ECU(17)는 충격감지센서(18)로부터 제공받은 충격량 정보에 의해 가스 발생기(13)를 동작시키고, 이 가스 발생기(13)에서 발생되는 가스에 의해 완충부재(14)가 이동되어 그 완충부재(14)의 선단부가 하우징(11)의 외부로 돌출되는 것이며 상기 완충부재(14)는 그 외측에 형성된 가이드바(15)에 의해서 안내되면서 유동되지 않고 이동되는 것이며 상기 가이드바(15)가 하우징(11)에 형성된 스토퍼(16)에 접촉되면 완충부재(14)의 이동이 정지된다.The ECU 17 operates the gas generator 13 by the impact amount information provided from the shock sensor 18, and the buffer member 14 is moved by the gas generated by the gas generator 13 to buffer the shock. The tip of the member 14 protrudes out of the housing 11, and the shock absorbing member 14 is guided by the guide bar 15 formed on the outside thereof and is moved without moving. The guide bar 15 is moved. The contact of the stopper 16 formed in the housing 11 stops the movement of the shock absorbing member 14.

상기 완충부재(14)의 이동방향은 자동차가 정면충돌로 발생된 충격력의 반대방향으로 이동되므로 상기 충격력을 완충하게 되는 것이다.The movement direction of the shock absorbing member 14 is to cushion the impact force because the vehicle is moved in the opposite direction of the impact force generated by the frontal collision.

즉, 자동차가 주행 중 정면충돌하여 발생되는 충돌에너지(E)는 범퍼가 흡수한 에너지(E1)와 자동차의 차체패널이 흡수한 에너지(E2) 그리고 충격완충장치가 흡수한 에너지(E3)가 완충된 에너지가 운전자 및 탑승자에게 전달되는 것이다.That is, the collision energy E generated by the frontal collision of the vehicle is buffered by the energy E1 absorbed by the bumper, the energy E2 absorbed by the vehicle body panel, and the energy E3 absorbed by the shock absorber. Energy is transmitted to the driver and the occupant.

따라서 자동차에 발생된 충격력은 범퍼와 차체패널 및 충격완충장치에서 흡수 완충되므로 운전자 및 탑승자에게 전달되는 충격력이 최소화되어 운전자 및 탑승자의 상해를 방지할 수 있는 것이다.Therefore, since the impact force generated in the vehicle is absorbed and buffered in the bumper, the body panel, and the shock absorber, the impact force transmitted to the driver and the occupant is minimized, thereby preventing injuries of the driver and the occupant.

이상에서와 같이 본 발명은 자동차가 주행 중 정면충돌 시 발생되는 충격력은 범퍼와 차체패널 및 충격완충장치에서 흡수 완충되므로 운전자 및 탑승자에게 전달되는 충격력이 최소화되어 운전자 및 탑승자를 안전하게 보호할 수 있는 특유의 효과가 있다.As described above, according to the present invention, the impact force generated when the vehicle is in front of the vehicle while driving is absorbed and buffered by the bumper, the body panel, and the shock absorber, thereby minimizing the impact force transmitted to the driver and the occupant, thereby protecting the driver and the occupant safely. Has the effect of.

Claims (2)

자동차의 전/후방에 설치된 차체패널(2)에 고정되는 고정부재(10)가 마련되고, 그 고정부재에는 수용홈(12)이 구비된 하우징(11)이 마련되고, 그 하우징에 마련된 수용홈의 내부에는 가스 발생기(13)가 마련되며, 그 가스 발생기의 일측에는 하우징의 내부를 이동되도록 하우징에 내장된 완충부재(14)가 마련되며, 상기 차체패널에 장착되어 충격을 감지하는 충격감지센서(18)가 마련되고, 그 충격감지센서에서 제공된 충격정보를 받아 상기 가스 발생기를 제어하도록 자동차에 갖춰진 ECU(17)가 마련된 것을 특징으로 하는 자동차의 충격완충장치.A fixing member 10 fixed to the vehicle body panel 2 provided at the front and rear of the vehicle is provided, and the fixing member is provided with a housing 11 having a receiving groove 12, and a receiving groove provided in the housing. A gas generator 13 is provided in the interior of the gas generator, and a shock absorbing member 14 mounted in the housing is provided at one side of the gas generator so as to move the inside of the housing. (18) is provided, and the shock absorber of the vehicle, characterized in that the ECU (17) provided in the vehicle to control the gas generator in response to the shock information provided by the shock sensor. 제 1 항에 있어서, 상기 완충부재의 외측 둘레면에는 가이드바(15)가 마련되고 상기 하우징의 내측에는 가이드바에 접촉되어 완충부재의 이동을 제한하는 스토퍼(16)가 마련된 것을 특징으로 하는 자동차의 충격완충장치.2. The vehicle according to claim 1, wherein a guide bar 15 is provided on an outer circumferential surface of the shock absorbing member, and a stopper 16 is provided inside the housing to contact the guide bar to limit movement of the shock absorbing member. Shock absorber.
KR10-2000-0082688A 2000-12-27 2000-12-27 Impact Absorbing Apparatus of Car KR100376473B1 (en)

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