KR20100048413A - Bumper system - Google Patents

Bumper system Download PDF

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Publication number
KR20100048413A
KR20100048413A KR1020080107550A KR20080107550A KR20100048413A KR 20100048413 A KR20100048413 A KR 20100048413A KR 1020080107550 A KR1020080107550 A KR 1020080107550A KR 20080107550 A KR20080107550 A KR 20080107550A KR 20100048413 A KR20100048413 A KR 20100048413A
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KR
South Korea
Prior art keywords
bumper
bumper beam
energy absorber
crash
crash box
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KR1020080107550A
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Korean (ko)
Inventor
소철원
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한화엘앤씨 주식회사
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Priority to KR1020080107550A priority Critical patent/KR20100048413A/en
Publication of KR20100048413A publication Critical patent/KR20100048413A/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
    • B60R19/04—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
    • 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
    • B60R19/18—Bumpers, 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
    • 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
    • B60R19/18—Bumpers, 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
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

PURPOSE: A bumper system is provided to absorb collision energy to the maximum and minimize the deformation as a crash box satisfies the performance of a 40% offset test and a 18 inches shape barrier test at the same time. CONSTITUTION: A bumper system comprises a bumper beam(100), crash boxes(110,120) and an energy absorber(140). Bumper beam is connected to a vehicle body. Crash boxes are formed at both sides of the longitudinal direction of the front surface of the bumper beam. The energy absorber is installed at the front surface of the bumper beam with a certain distance from the crash boxes. The crash box is in a honeycomb structure which is opened toward the front.

Description

범퍼 시스템{Bumper System}Bumper System

본 발명은 범퍼 시스템에 관한 것으로, 특히 신규 RCAR 성능을 만족하는 범퍼 시스템에 관련한다.The present invention relates to a bumper system, and more particularly to a bumper system that satisfies the novel RCAR performance.

최근 유럽 범퍼 성능에서 새로운 RCAR 성능을 요구하고 있다. 이를 위한 RCAR 평가 방법을 개략적으로 살펴보면 다음과 같다.Recently, bumper performance in Europe is demanding new RCAR performance. The RCAR evaluation method for this is outlined as follows.

먼저, 40%, 10°오프셋(offset) 테스트를 통하여 보험등급을 결정한다. 다시 말해, 10°경사지고 40% 오프셋 된 충돌 벽에 15㎞/h의 속도로 저속 충돌한 후 부품 가격, 수리기간, 공임비 등으로 보험등급을 결정한다. 이 평가에서의 요구사항은 범퍼 시스템만 교체하고 차체 손상이 없는 것이다.First, the insurance rating is determined by a 40%, 10 ° offset test. In other words, a low-speed collision at a speed of 15 km / h on a 10 ° incline and 40% offset collision wall is used to determine the insurance rating based on part price, repair period and labor costs. The requirement in this assessment is to replace only the bumper system and not damage the bodywork.

이어, 범퍼 빔 기하학적(geometry) 평가를 수행한다. 여기서, 요구사항은 배리어와 범퍼 빔의 오버랩이 75㎜ 이상이거나, 범퍼 빔의 높이가 100㎜ 이상이다.The bumper beam geometry evaluation is then performed. The requirement here is that the overlap of the barrier and the bumper beam is at least 75 mm, or the height of the bumper beam is at least 100 mm.

이와 같은 기하학적 평가를 만족한 경우에는 18인치 범퍼 배리어 테스트(bumper barrier test)를 수행하고, 만족하지 못한 경우에는 보험등급을 2등급 상향조정하여 결정한다.If the geometric evaluation is satisfied, an 18-inch bumper barrier test is performed. If the geometric evaluation is not satisfied, the insurance rating is increased by two levels.

한편, 범퍼 배리어 테스트에서는 범퍼 배리어를 18인치 높이로 차량의 전방 과 후방에 10㎞/h의 속도로 저속 충돌한다. 여기서, 요구사항은 차체 손상이 없고 언더라이드(underride)나 오버라이드(override)가 발생하지 않는 것이다.The bumper barrier test, on the other hand, bumps the bumper barrier 18 inches high at a speed of 10 km / h at the front and rear of the vehicle. The requirement here is that there is no damage to the bodywork and no overriding or overriding occurs.

마찬가지로, 범퍼 배리어 테스트를 만족한 경우에는 기 결정된 보험등급에 변동이 없지만, 만족하지 못한 경우에는 보험등급을 2등급 상향조정하여 결정한다.Similarly, if the bumper barrier test is satisfied, there is no change in the predetermined insurance rating, but if it is not satisfied, the insurance rating is increased by two levels.

따라서, 40% 오프셋 테스트에서 차체의 손상을 줄이기 위해 충돌시 범퍼 빔이 견딜 수 있는 한도 내에서 압착, 변형 또는 파괴 등으로 최대한 충돌에너지를 흡수하도록 하는 구조를 구비해야 하지만, 범퍼 배리어 테스트에서는 차체 손상을 막기 위해 범퍼 빔은 변형이 최소화되거나 파손이 없어야 한다.Therefore, in order to reduce the damage of the body in 40% offset test, it is necessary to have a structure that absorbs the collision energy as much as possible by crimping, deformation, or destroying the bumper beam in the collision, but in the bumper barrier test To prevent this, the bumper beams should have minimal deformation or no damage.

그러나, 이러한 서로 상반된 요구를 수용할 수 있는, 다시 말해 새로운 RCAR 성능을 만족시키기 위한 범퍼 시스템에 대한 필요성이 대두되고 있다.However, there is a need for a bumper system that can accommodate these conflicting needs, that is, to meet new RCAR performance.

따라서, 본 발명의 목적은 새로운 RCAR 평가에서 40% 오프셋 테스트와 18인치 형상 배리어 테스트 성능을 동시에 만족시킬 수 있으면서 중량을 최소화하고 연비를 극대화할 수 있는 범퍼 시스템을 제공하는 것이다.Accordingly, an object of the present invention is to provide a bumper system capable of minimizing weight and maximizing fuel economy while simultaneously satisfying 40% offset test and 18 inch shape barrier test performance in a new RCAR evaluation.

상기의 목적은, 차체에 결합하는 범퍼 빔; 상기 범퍼 빔의 전방 면 길이방향 양측에 형성된 크래쉬 박스; 및 상기 범퍼 빔의 전방 면에서 상기 크래쉬 박스 사이에서 상기 크래쉬 박스와 이격하여 설치되는 에너지 압소버를 포함하는 범퍼 시스템에 의해 달성된다.The above object, the bumper beam coupled to the vehicle body; Crash boxes formed at both sides of the front surface in the longitudinal direction of the bumper beam; And an energy absorber installed spaced apart from the crash box between the crash box at the front face of the bumper beam.

바람직하게, 상기 크래쉬 박스는, 전방을 향하여 개구된 하니콤(honeycomb) 구조일 수 있다.Preferably, the crash box may be a honeycomb structure opened toward the front.

또한, 바람직하게, 상기 에너지 압소버의 전방 단면의 평면 윤곽은 곡선을 이루고, 상기 크래쉬 박스의 전방 단면의 평면 윤곽은 상기 에너지 압소버의 윤곽 곡선의 연장선에 일치하도록 형성될 수 있다.Further, preferably, the planar contour of the front cross section of the energy absorber forms a curve, and the planar contour of the front cross section of the crash box may be formed to coincide with the extension line of the contour curve of the energy absorber.

상기한 구성에 의하면, 새로운 RCAR 평가에서 요구하는 40% 오프셋 테스트와 18인치 형상 배리어 테스트 성능을 동시에 만족시킬 수 있으면서 차량의 중량을 최소화할 수 있다.According to the above configuration, the weight of the vehicle can be minimized while simultaneously satisfying the 40% offset test and the 18-inch shape barrier test performance required by the new RCAR evaluation.

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

도 1은 본 발명의 일 실시 예에 따른 범퍼 시스템을 나타내는 사시도이다.1 is a perspective view illustrating a bumper system according to an exemplary embodiment.

도시된 바와 같이, 범퍼 시스템은 차체에 결합하는 범퍼 빔(100), 범퍼 빔(100)의 전방 면에서 길이방향 양측에 형성된 크래쉬 박스(110, 120), 크래쉬 박스(110, 120) 사이에서 크래쉬 박스와 이격하여 범퍼 빔(100)의 전방 면에 설치되는 에너지 압소버(140)를 포함한다.As shown, the bumper system is a crash between the bumper beam 100 coupled to the vehicle body, the crash box (110, 120) formed on both sides in the longitudinal direction on the front surface of the bumper beam 100, the crash box (110, 120) An energy absorber 140 is installed on the front surface of the bumper beam 100 and spaced apart from the box.

범퍼 빔(100)은 스틸이나 유리섬유매트 열가소성 복합재(Glass Mat Thermoplastic) 또는 장섬유 강화 복합재(Long Fiber-Reinforced Thermoplastic)가 사용될 수 있으며, 차체에 사이드 부재 등을 개재하여 부착된다.The bumper beam 100 may be made of steel, glass mat thermoplastic, or long fiber-reinforced thermoplastic, and is attached to the vehicle body via a side member.

또한, 크래쉬 박스(110, 120)는, 가령 전방을 향해 개구된 허니콤(honeycomb) 구조를 구비할 수 있으며, 가령 TPO(ThermoPlastic Olefine) 등이 적용될 수 있으며, 에너지 압소버(140)로는 발포폴리프로필렌이 적용될 수 있다.In addition, the crash boxes 110 and 120 may have, for example, a honeycomb structure open toward the front, and for example, TPO (ThermoPlastic Olefine) may be applied, and as the energy absorber 140, the foamed poly Propylene can be applied.

여기서, 크래쉬 박스(110, 120)는 전방으로 향해 개구된 허니콤 구조를 예를 들고 있으나, 특허출원 제2007-0132193호에 개시된 크래쉬 박스와 같이 상하방향으로 개구된 격자 구조도 적용될 수 있다. Here, the crash boxes 110 and 120 are examples of the honeycomb structure that is open toward the front, but may also be applied to the lattice structure opened in the vertical direction, such as the crash box disclosed in Patent Application No. 2007-0132193.

이러한 구성에 의하면, 크래쉬 박스(110, 120)는 제한된 충격량, 즉 차체 미손상을 위한 허용된 힘을 유지하면서 최대의 충돌 에너지를 흡수하여 차체의 손상 없이 많은 충돌 에너지를 흡수할 수 있다. 다시 말해, 40%, 10도 오프셋 테스트시 크래쉬 기능을 한다.According to this configuration, the crash boxes 110 and 120 can absorb a large amount of collision energy without damaging the vehicle body by absorbing the maximum collision energy while maintaining a limited amount of impact, that is, an allowable force for the vehicle body damage. In other words, a 40%, 10 degree offset test crashes.

또한, 크래쉬 박스(110, 120) 사이에서 범퍼 빔(100)의 전방 면에 설치된 에 너지 압소버(140)와 크래쉬 박스(110, 120) 자체가 형상 배리어 테스트시 에너지 흡수기능을 한다. 다시 말해, 크래쉬 박스(110, 120) 자체가 에너지 압소버(140)의 양단에 위치하여 되어 에너지 압소버(140)의 일부처럼 기능하게 된다.In addition, the energy absorber 140 and the crash boxes 110 and 120 themselves installed on the front surface of the bumper beam 100 between the crash boxes 110 and 120 function as energy absorbers during the shape barrier test. In other words, the crash boxes 110 and 120 themselves are positioned at both ends of the energy absorber 140 to function as part of the energy absorber 140.

결과적으로, 크래쉬 박스(110, 120)는 40%, 10도 오프셋 테스트시 충돌 에너지를 최대한 흡수하는 기능과 형상 배리어 테스트시 에너지 압소버(140)와 함께 최소 변형에 일조를 한다.As a result, the crash boxes 110 and 120 contribute to the maximum deformation of the collision energy in the 40%, 10 degree offset test and the energy absorber 140 in the shape barrier test.

이와 함께, 크래쉬 박스(110, 120)에 해당하는 부분만큼 에너지 압소버(140)가 생략됨으로써 중량을 최소화할 수 있다는 이점도 있다.In addition, since the energy absorber 140 is omitted as much as the portions corresponding to the crash boxes 110 and 120, the weight may be minimized.

바람직하게, 에너지 압소버(140)의 전방 단면의 평면 윤곽은 곡선을 이루고 있으며, 크래쉬 박스(110, 120)의 전방 단면의 평면 윤곽은 에너지 압소버(140)의 윤곽 곡선의 연장선에 일치하도록 형성하여 에너지 압소버(140)와 양 크래쉬 박스(110, 120)를 포함하여 단일의 평면 윤곽이 이루어지도록 할 수 있다. 이러한 구조에 의하면, 단일의 평면 윤곽을 이루도록 하여 이들 전면에 설치되는 범퍼 커버와의 간극을 일정하게 함으로써 범퍼 커버의 꿀렁거림을 방지할 수 있다. Preferably, the planar contour of the front cross section of the energy absorber 140 is curved, and the planar contour of the front cross sections of the crash boxes 110 and 120 is formed to match the extension line of the contour curve of the energy absorber 140. By including the energy absorber 140 and both crash boxes (110, 120) can be made of a single planar contour. According to such a structure, the bumper cover can be prevented by making a single flat outline and making the clearance gap with the bumper cover provided in these front surfaces constant.

이상에서는 본 발명의 실시예를 중심으로 설명하였지만, 당업자의 수준에서 다양한 변경이나 변형이 가능하다. 따라서, 본 발명의 권리범위는 상기한 실시예에 한정되어서는 안 되며, 이하에 기술되는 특허청구범위에 의해 해석되어야 할 것이다.In the above description, the embodiment of the present invention has been described, but various changes and modifications can be made by those skilled in the art. Therefore, the scope of the present invention should not be limited to the above embodiment, but should be interpreted by the claims described below.

도 1은 본 발명의 일 실시 예에 따른 범퍼 시스템을 나타내는 사시도이다.1 is a perspective view illustrating a bumper system according to an exemplary embodiment.

Claims (3)

차체에 결합하는 범퍼 빔; A bumper beam coupled to the vehicle body; 상기 범퍼 빔의 전방 면 길이방향 양측에 형성된 크래쉬 박스; 및Crash boxes formed at both sides of the front surface in the longitudinal direction of the bumper beam; And 상기 범퍼 빔의 전방 면에서 상기 크래쉬 박스 사이에서 상기 크래쉬 박스와 이격하여 설치되는 에너지 압소버를 포함하는 것을 특징으로 하는 범퍼 시스템.And an energy absorber installed spaced apart from the crash box between the crash box at the front surface of the bumper beam. 청구항 1에 있어서,The method according to claim 1, 상기 크래쉬 박스는, 전방을 향하여 개구된 하니콤(honeycomb) 구조인 것을 특징으로 하는 범퍼 시스템.The crash box is a bumper system, characterized in that the honeycomb structure (opening toward the front). 청구항 1 또는 2에 있어서,The method according to claim 1 or 2, 상기 에너지 압소버의 전방 단면의 평면 윤곽은 곡선을 이루고, 상기 크래쉬 박스의 전방 단면의 평면 윤곽은 상기 에너지 압소버의 윤곽 곡선의 연장선에 일치하도록 형성되는 것을 특징으로 하는 범퍼 시스템.And wherein the planar contour of the front cross section of the energy absorber is curved and the planar contour of the front cross section of the crash box is formed to coincide with the extension of the contour curve of the energy absorber.
KR1020080107550A 2008-10-31 2008-10-31 Bumper system KR20100048413A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102862535A (en) * 2011-07-05 2013-01-09 本田技研工业株式会社 Vehicle bumper structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102862535A (en) * 2011-07-05 2013-01-09 本田技研工业株式会社 Vehicle bumper structure

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