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KR100826471B1 - Crash box in automotive bumper system - Google Patents

Crash box in automotive bumper system Download PDF

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Publication number
KR100826471B1
KR100826471B1 KR1020060134439A KR20060134439A KR100826471B1 KR 100826471 B1 KR100826471 B1 KR 100826471B1 KR 1020060134439 A KR1020060134439 A KR 1020060134439A KR 20060134439 A KR20060134439 A KR 20060134439A KR 100826471 B1 KR100826471 B1 KR 100826471B1
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KR
South Korea
Prior art keywords
base plate
absorbing member
vehicle
shock absorbing
crash box
Prior art date
Application number
KR1020060134439A
Other languages
Korean (ko)
Inventor
구도회
이상제
Original Assignee
주식회사 성우하이텍
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Priority to KR1020060134439A priority Critical patent/KR100826471B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/36—Combinations of yieldable mounting means of different types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R2019/262—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means with means to adjust or regulate the amount of energy to be absorbed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

A crash box for a vehicle is provided to improving impact reduction performance of a bumper by absorbing impact energy through two steps when external impact energy is applied thereto. A crash box(1) for a vehicle comprises a front bracket(3), a rear bracket(5), a first impact absorbing member(7) and a second impact absorbing member(9). The front bracket includes a front base plate(11) coupled to a bumper beam, and a front guide member(13) integrally formed with a rear center portion of the front base plate. The rear bracket includes a rear base plate(15) coupled to a side member of a vehicle body, and a rear guide member(17) integrally formed with a front center portion of the rear base plate. Front and rear end portions of the first impact absorbing member are inserted into the front and rear guide members, respectively. The second impact absorbing member is made of aluminum foam and a rear end portion of the second impact absorbing member is fixed to the rear base plate of the rear bracket.

Description

차량용 크래쉬 박스{CRASH BOX IN AUTOMOTIVE BUMPER SYSTEM}Crash box for vehicle {CRASH BOX IN AUTOMOTIVE BUMPER SYSTEM}

도 1은 본 발명에 의한 크래쉬 박스의 사시도. 1 is a perspective view of a crash box according to the present invention.

도 2는 도 1의 A-A 선에 따른 단면도. 2 is a cross-sectional view taken along the line A-A of FIG.

도 3은 본 발명에 의한 크래쉬 패드의 1차 충격 흡수 상태를 보인 단면도.3 is a cross-sectional view showing a primary shock absorbing state of the crash pad according to the present invention.

도 4는 본 발명에 의한 크래쉬 패드의 2차 충격 흡수 상태를 보인 단면도.Figure 4 is a cross-sectional view showing a secondary shock absorbing state of the crash pad according to the present invention.

도 5는 일반적인 차량용 범퍼 시스템의 분리 사시도이다.5 is an exploded perspective view of a general vehicle bumper system.

본 발명은 차량용 크래쉬 박스에 관한 것으로서, 보다 상세하게는 차량용 범퍼 시스템에 있어서 범퍼 빔과 프런트 사이드 멤버 혹은 리어 사이드 멤버 사이에 연결되어 전,후방으로부터 입력되는 충격 에너지를 자체적으로 흡수하여 차체에 최소한의 충격 에너지가 입력될 수 있도록 한 차량용 크래쉬 박스에 관한 것이다. The present invention relates to a crash box for a vehicle, and more particularly, in a vehicle bumper system, the bumper beam and the front side member or the rear side member are connected between the front and rear side members to absorb the energy input from the front and rear by itself to minimize the vehicle body. A crash box for a vehicle in which impact energy can be input.

일반적으로 차량용 범퍼 시스템은 차량의 저속 충돌시 탄성적으로 변형하여 차량의 물리적인 손상을 최초화하기 위한 것으로서, 다른 자동차나 고정체와의 충돌시 그 충격을 흡수하여 탑승자의 안전을 도모하게 되며, 동시에 차체의 변형을 최소화 할 수 있도록 자동차 전,후방에 배치되는 완충장치이다.In general, a bumper system for a vehicle is to elastically deform at a low speed collision of the vehicle to initialize physical damage of the vehicle, and absorbs the impact when colliding with another vehicle or a fixed body, thereby promoting passenger safety. At the same time, it is a shock absorber placed in front and rear of the car to minimize the deformation of the car body.

이러한 범퍼 시스템은, 도 5에서 도시한 바와 같이, 기본적으로 차량의 전,후방에서 차폭방향으로 2개의 범퍼레일(101,103)로 구성되어 장착되는 범퍼 빔(105)과, 상기 범퍼 빔(105)의 전방에 배치되어 충격력을 흡수하는 에너지 업소버(107)와, 그리고 상기 범퍼 빔(105)과 에너지 업소버(107)를 감싸는 범퍼 커버(109)와, 상기 범퍼 빔(105)과 프런트 사이드 멤버(111)를 상호 연결하기 위한 크래쉬 박스(즉, 범퍼 스테이; 113)를 포함하여 구성된다.As shown in FIG. 5, the bumper system includes a bumper beam 105 configured by two bumper rails 101 and 103 in the vehicle width direction from the front and the rear of the vehicle, and a bumper beam 105 of the bumper beam 105. An energy absorber 107 disposed in front to absorb the impact force, a bumper cover 109 covering the bumper beam 105 and the energy absorber 107, the bumper beam 105 and the front side member 111. And a crash box (ie, bumper stay) 113 for interconnecting them.

상기와 같이 구성되는 범퍼 시스템의 안전성 및 경량화를 위한 개발과정에서, 최근에는 고속(중속)충돌시 충격 에너지를 흡수하면서 차체 구조물의 손상을 최소화할 수 있도록 충격 에너지 흡수용 크래쉬 박스(Crash Box) 및 사이드 멤버(Side Member)등을 경량 알루미늄 합금을 형성하여 대형 승용차등에 적용하고 있는 추세이다. In the development process for safety and light weight of the bumper system configured as described above, a crash box for absorbing impact energy so as to minimize damage to a vehicle structure while absorbing impact energy during a high speed (medium speed) collision and Side members are being applied to large passenger cars by forming lightweight aluminum alloys.

본 발명은 상기한 바와 같은 범퍼 시스템의 개발 추세에 부응하기 위하여 발명된 것으로서, 본 발명의 목적은 외부 충격 에너지의 입력시 2차에 걸쳐 충격을 흡수할 수 있도록 하여 차량용 범퍼의 충돌 성능을 더욱 향상시킬 수 있도록 한 차량용 크래쉬 박스를 제공함에 있다.The present invention has been invented in order to meet the development trend of the bumper system as described above, an object of the present invention is to further improve the impact performance of the bumper for a vehicle by absorbing a shock over a second time when the input of external impact energy. To provide a vehicle crash box that can be made.

상기한 바와 같은 목적을 실현하기 위한 본 발명은, 차량의 사이드 멤버와 범퍼 빔을 연결하는 차량용 크래쉬 박스에 있어서, The present invention for realizing the above object, in a vehicle crash box connecting the side member of the vehicle and the bumper beam,

범퍼 빔과 결합되는 전측 베이스 플레이트와, 소정의 직경을 갖는 원통형의 부재로서 상기 전측 베이스 플레이트의 후면 중앙부에 일체로 형성되는 전측 가이드 부재로 이루어지는 전측 브라켓;A front bracket comprising a front base plate coupled to a bumper beam and a front guide member integrally formed at a rear center portion of the front base plate as a cylindrical member having a predetermined diameter;

차체의 사이드 멤버에 고정되는 후측 베이스 플레이트와, 소정의 직경을 갖는 원통형 부재로서 상기 후측 베이스 플레이트의 전면 중앙부에 일체로 형성되는 후측 가이드 부재로 이루어지는 후측 브라켓과;A rear bracket comprising a rear base plate fixed to the side member of the vehicle body, and a rear guide member integrally formed in the front center portion of the rear base plate as a cylindrical member having a predetermined diameter;

전,후단부가 대직경부로 이루어지고, 중앙부가 소직경부로 이루어져 전, 후단부가 상기 전측 및 후측 가이드 부재의 각 내경부에 삽입되어 고정되는 제1 충격 흡수부재와;A first shock absorbing member having front and rear ends formed of a large diameter part, and a central part made of a small diameter part and having front and rear ends inserted into and fixed to respective inner diameter parts of the front and rear guide members;

알루미늄 폼으로 형성되어 후단부가 상기 후측 브라켓의 후측 베이스 플레이트에 고정되고, 그 전측부는 상기 제1 충격 흡수부재의 소직경부에 위치하는 제2 충격 흡수부재를 포함하여 이루어지는 차량용 크래쉬 박스를 제공한다.It is formed of aluminum foam and the rear end is fixed to the rear base plate of the rear bracket, the front side provides a vehicle crash box comprising a second shock absorbing member located in the small diameter portion of the first shock absorbing member.

이하, 본 발명의 바람직한 실시예들을 첨부한 도면을 참조로 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 크래쉬 박스의 조립 사시도이고, 도 2는 도 1의 A-A 선에 따른 단면도로서, 부호 1은 크래쉬 박스 전체를 지칭한다.1 is an assembled perspective view of a crash box according to the present invention, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, reference numeral 1 refers to the entire crash box.

상기 크래쉬 박스(1)는 종래와 마찬가지로 범퍼 빔과 프런트 사이드 멤버 혹은 리어 사이드 멤버 사이에 연결되어 전,후방으로부터 입력되는 충격 에너지를 자체적으로 흡수하여 차체에 최소한의 충격 에너지가 입력되도록 하는 기능을 수행하게 된다.The crash box 1 is connected between the bumper beam and the front side member or the rear side member as in the prior art, so that the impact energy input from the front and rear is absorbed by itself so that the minimum impact energy is input to the vehicle body. Done.

이러한 크래쉬 박스(1)는 전,후측 브라켓(3)(5)과 제1,2 충격 흡수부재(7)(9)를 포함하여 이루어지게 된다.The crash box 1 includes front and rear brackets 3 and 5 and first and second shock absorbing members 7 and 9.

상기에서 전측 브라켓(3)은 범퍼 빔과 결합되는 전측 베이스 플레이트(11)와, 소정의 직경을 갖는 원통형의 부재로서 상기 전측 베이스 플레이트(11)의 후면 중앙부에 일체로 형성되는 전측 가이드 부재(13)를 포함하여 이루어진다.In the above, the front bracket 3 is a front base plate 11 coupled to the bumper beam, and a front guide member 13 integrally formed at the rear center of the front base plate 11 as a cylindrical member having a predetermined diameter. )

상기 후측 브라켓(5)는 차체의 사이드 멤버에 고정되는 후측 베이스 플레이트(15)와, 소정의 직경을 갖는 원통형 부재로서 상기 후측 베이스 플레이트(15)의 전면 중앙부에 일체로 형성되는 후측 가이드 부재(17)를 포함하여 이루어진다.The rear bracket 5 is a rear base plate 15 fixed to the side member of the vehicle body, and a rear guide member 17 integrally formed at the front center portion of the rear base plate 15 as a cylindrical member having a predetermined diameter. )

그리고 상기 제1 충격 흡수부재(7)는 전,후단부가 상기 저측 및 후측 가이드 부재(13)(17)의 내경부에 삽입되어 고정되는 일정 길이를 갖는 원통형 부재로 이루어진다.The first shock absorbing member 7 is formed of a cylindrical member having a predetermined length in which front and rear ends are inserted into and fixed to the inner diameter portions of the bottom and rear guide members 13 and 17.

또한, 상기 제1 충격 흡수부재(7)는 그 전,후단부가 대직경부(19)(21)로 이루어지고, 상기 대직경부(19)(21)는 소직경부(23)에 의하여 상호 연결된다.In addition, the first shock absorbing member 7 has a front and rear ends of the large diameter portions 19 and 21, and the large diameter portions 19 and 21 are connected to each other by the small diameter portion 23.

그리고 상기 대직경부(19)(21)와 소직경부(23)를 상호 일체로 연결함에 있어서는 도 2에서와 같이, 대직경부(19)(21)의 단부를 내측으로 절곡시키고, 소직경부(23)의 전후측 단부를 외측으로 완전 절곡시킴으로써, 제1,제2 꺽임부(25)(27)를 보유하면서 상호 연결되도록 하였다.In connecting the large diameter portions 19 and 21 and the small diameter portion 23 integrally with each other, as shown in FIG. 2, the ends of the large diameter portions 19 and 21 are bent inward and the small diameter portion 23 is formed. By fully bending the front and rear end portions of the outwards, the first and second bent portions 25 and 27 were connected to each other while retaining the first and second bent portions 25 and 27.

이에 따라, 상기 대직경부(19)(21)와 소직경부(23)의 연결부는 제1,제2 꺽임부(25)(27)에 의하여 3층의 단면 형상을 갖게 된다.Accordingly, the connecting portion of the large diameter portions 19 and 21 and the small diameter portion 23 has a cross-sectional shape of three layers by the first and second bending portions 25 and 27.

상기에서 제1 충격 흡수부재(7)에 제1,제2 꺽임부(25)(27)를 형성한 것은 외부의 충격에 의하여 축방향으로 강한 충격 에너지가 입력되어 제1 충격 흡수부재(7)에 순간적인 강한 압축력이 가해지는 경우에 상기 제1,2 꺽임부(25)(27)의 위치가 이동되면서 제1 충격 흡수부재(7)의 수축이 이루어질 수 있도록 하기 위함이다.The first and second bent portions 25 and 27 are formed in the first shock absorbing member 7 in such a way that strong impact energy is input in the axial direction by external shocks, such that the first shock absorbing member 7 is formed. This is to allow the first shock absorbing member 7 to contract as the position of the first and second bending portions 25 and 27 is moved when a strong compressive force is applied to the second moment.

그리고 상기 제2 충격 흡수부재(9)는 일정 길이를 갖는 원주형 부재로 이루어져 후측 가이드 부재(17)의 내경부에 배치된다.The second shock absorbing member 9 is formed of a cylindrical member having a predetermined length and disposed at an inner diameter portion of the rear guide member 17.

상기 제2 충격 흡수부재(9)는 알루미늄 폼으로 형성되며, 이의 제2 충격 흡수부재(9)의 후단부는 후측 브라켓(5)의 후측 베이스 플레이트(15)에 고정되고, 그 전측부는 상기 제1 충격 흡수부재(7)의 소직경부(23)에 끼워져 위치된다.The second shock absorbing member 9 is formed of aluminum foam, and the rear end of the second shock absorbing member 9 is fixed to the rear base plate 15 of the rear bracket 5, and the front side of the second shock absorbing member 9 1 is fitted to the small diameter portion 23 of the shock absorbing member (7).

상기에서 제2 충격 흡수부재(9)로 적용되는 알루미늄 폼은 차량 경량화에 기여할 수 있는 가장 대표적인 금속재료로서, 이는 알루미늄의 특성에 기인하며, 경량성 뿐만 아니라 충격 흡수성, 흡차음성, 내식성 등이 우수하여 자동차용 재료로 사용하게 되면 최고 30% 가량 경량화를 이룰 수 있으며, 종래 자동차 생산라인 설비를 약간 혹은 그대로 사용할 수 있다는 장점으로 인해 차량의 경량화를 위한 대체 재료로 주목받고 있다.The aluminum foam applied as the second shock absorbing member 9 is the most representative metal material that can contribute to the weight reduction of the vehicle, which is due to the characteristics of aluminum, and is excellent in shock absorption, sound absorbing and insulating sound resistance, corrosion resistance, etc. as well as light weight. Therefore, when used as a material for cars can achieve a weight reduction of up to 30%, it is attracting attention as an alternative material for light weight of the vehicle due to the advantage that can be used a little or as conventional car production line equipment.

상기와 같이 이루어지는 본 발명의 크래쉬 박스(1)는 평상시에는, 도 2와 같은 상태를 유지하게 되며, 차량의 충돌 및 추돌에 의하여 범퍼를 통하여 충격 에너지가 입력되면, 먼저 상기 충격 에너지는 제1 충격 흡수부재(7)에 전달된다.Crash box 1 of the present invention made as described above is normally maintained as shown in Figure 2, when the impact energy is input through the bumper due to the collision and collision of the vehicle, the impact energy is first shock It is transmitted to the absorbing member (7).

그러면 상기 제1 충격 흡수부재(7)에는 축방향으로 강한 충격 에너지가 입력되면서 순간적인 강한 압축력이 가해지게 되는데, 이때에는 대직경부(19)(21)와 소직경부(23)의 연결부를 제1, 2 꺽임부(25)(27)로 연결하고 있는 바, 상기 충격에 의하여 상기 제1,2 꺽임부(25)(27)의 위치가, 도 3에서와 같이, 이동하면서 1차 충격 흡수가 이루어진다.Then, a strong compressive force is applied to the first shock absorbing member 7 while the strong impact energy is input in the axial direction. In this case, the connection portion between the large diameter portion 19, 21 and the small diameter portion 23 is firstly provided. And the second bent portions 25 and 27 are connected to each other, and the first and second bent portions 25 and 27 are moved as shown in FIG. Is done.

그리고 제1 충격 흡수부재(7)의 수축이 더욱 진행되어 제2 충격 흡수부재(9)의 전단부가 전측 브라켓(3)의 전측 베이스 플레이트(11)와 접촉된 후에는, 도 4에서와 같이, 제2 충격 흡수부재(9)가 변형되면서 2차로 충격을 흡수하게 되는데, 이때에는 제2 충격 흡수부재(9)가 압축 변형되면서 강성이 가장 연약한 제1 충격 흡수부재(7)의 중앙 부분을 외측으로 팽창시키면서 충격을 흡수하게 되는 것이다.After the contraction of the first shock absorbing member 7 further proceeds and the front end portion of the second shock absorbing member 9 comes into contact with the front base plate 11 of the front bracket 3, as shown in FIG. 4, As the second shock absorbing member 9 is deformed, the second shock absorbing member 9 is secondarily absorbed. At this time, the second shock absorbing member 9 is compressed and deformed, and the center portion of the first shock absorbing member 7 having the weakest rigidity is outside. The shock is absorbed while expanding.

상기에서와 같이 본 발명에 의한 크래쉬 박스(1)에 의하면 원통형 부재인 제1 충격 흡수부재(7)가 축방향으로 수축되면서 1차 충격을 흡수하고, 상기 제1 충격 흡수부재(7)의 내측에 배치되어 있는 알루미늄 폼의 제2 충격 흡수부재(9)의 압축 변형에 의하여 2차 충격이 흡수되는 바, 충격 흡수 성능을 크게 향상시킬 수 있게 되는 것이다.According to the crash box 1 according to the present invention as described above, the first shock absorbing member 7, which is a cylindrical member, is contracted in the axial direction to absorb the primary shock, and the inner side of the first shock absorbing member 7. The secondary shock is absorbed by the compressive deformation of the second shock absorbing member 9 of the aluminum foam disposed in the bar, thereby greatly improving the shock absorbing performance.

이러한 충돌성능의 향상은 저속 충돌시 차량의 주요기능 부품의 손상을 최소화시키며, 사고 발생시 승객의 안전을 도모할 수 있는 효과를 나타낼 것이다.The improvement of the collision performance will minimize the damage of the main functional parts of the vehicle in the low-speed collision, and will have the effect of promoting the safety of passengers in the event of an accident.

이상에서 설명한 바와 같이, 본 발명에 따른 차량용 크래쉬 박스에 의하면, 범퍼 시스템의 개발 추세에 부응하기 위하여 알루미늄 폼을 적용함으로써, 전,후측 브라켓을 연결하는 원통형 부재와 함께 충돌 에너지의 흡수성능을 크게 향상시킴으로써, 차량용 범퍼의 충돌성능을 더욱 향상시킬 수 있는 발명인 것이다.As described above, according to the vehicle crash box according to the present invention, by applying aluminum foam to meet the development trend of the bumper system, the absorption performance of the collision energy is greatly improved along with the cylindrical member connecting the front and rear brackets. By doing so, it is an invention that can further improve the collision performance of the vehicle bumper.

Claims (2)

차량의 사이드 멤버와 범퍼 빔을 연결하는 차량용 크래쉬 박스에 있어서, In a vehicle crash box that connects the side member of the vehicle and the bumper beam, 범퍼 빔과 결합되는 전측 베이스 플레이트와, 소정의 직경을 갖는 원통형의 부재로서 상기 전측 베이스 플레이트의 후면 중앙부에 일체로 형성되는 전측 가이드 부재로 이루어지는 전측 브라켓;A front bracket comprising a front base plate coupled to a bumper beam and a front guide member integrally formed at a rear center portion of the front base plate as a cylindrical member having a predetermined diameter; 차체의 사이드 멤버에 고정되는 후측 베이스 플레이트와, 소정의 직경을 갖는 원통형 부재로서 상기 후측 베이스 플레이트의 전면 중앙부에 일체로 형성되는 후측 가이드 부재로 이루어지는 후측 브라켓과;A rear bracket comprising a rear base plate fixed to the side member of the vehicle body, and a rear guide member integrally formed in the front center portion of the rear base plate as a cylindrical member having a predetermined diameter; 전,후단부가 대직경부로 이루어지고, 중앙부가 소직경부로 이루어져 전, 후단부가 상기 전측 및 후측 가이드 부재의 각 내경부에 삽입되어 고정되는 제1 충격 흡수부재와;A first shock absorbing member having front and rear ends formed of a large diameter part, and a central part made of a small diameter part and having front and rear ends inserted into and fixed to respective inner diameter parts of the front and rear guide members; 알루미늄 폼으로 형성되어 후단부가 상기 후측 브라켓의 후측 베이스 플레이트에 고정되고, 그 전측부는 상기 제1 충격 흡수부재의 소직경부에 위치하는 제2 충격 흡수부재를 포함하여 이루어짐을 특징으로 하는 차량용 크래쉬 박스.The crash box for a vehicle, which is formed of aluminum foam and has a rear end fixed to a rear base plate of the rear bracket, the front side including a second shock absorbing member positioned at a small diameter portion of the first shock absorbing member. . 제1항에 있어서, The method of claim 1, 제 1충격 흡수부재의 대직경부와 소직경부의 연결부는 대직경부의 단부를 내측으로 절곡시키고, 소직경부의 전후측 단부를 외측으로 완전 절곡시켜 제1, 2 꺽임부를 보유하면서 상호 연결됨을 특징으로 하는 차량용 크래쉬 박스.The connecting portion of the large diameter portion and the small diameter portion of the first shock absorbing member is bent to the inside of the end portion of the large diameter portion, and the front and rear ends of the small diameter portion are completely bent outwardly to be connected to each other while retaining the first and second bent portions. Car Crash Box.
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KR101006053B1 (en) * 2008-08-26 2011-01-10 주식회사 성우하이텍 Crash box in automotive bumper system
KR101019570B1 (en) 2008-10-29 2011-03-08 주식회사 성우하이텍 Bumper stay of automotive bumper unit
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CN105035001A (en) * 2015-08-20 2015-11-11 华南理工大学 Vehicle energy absorbing box based on energy absorption in free overturning and deforming mode
CN113306516A (en) * 2021-07-14 2021-08-27 上海应用技术大学 Automobile energy absorption box
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KR101006053B1 (en) * 2008-08-26 2011-01-10 주식회사 성우하이텍 Crash box in automotive bumper system
KR101019570B1 (en) 2008-10-29 2011-03-08 주식회사 성우하이텍 Bumper stay of automotive bumper unit
WO2010062007A1 (en) * 2008-11-27 2010-06-03 주식회사 포스코 Shock absorbing device for vehicle with multiple shock absorbing stages
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WO2022211753A1 (en) * 2021-03-31 2022-10-06 Sakarya Universitesi Rektorlugu A crashbox
CN113306516A (en) * 2021-07-14 2021-08-27 上海应用技术大学 Automobile energy absorption box
CN113306516B (en) * 2021-07-14 2023-09-22 上海应用技术大学 Automobile energy absorption box

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