KR101477618B1 - Bumper beam for vehicle with enhanced crash capability - Google Patents

Bumper beam for vehicle with enhanced crash capability Download PDF

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Publication number
KR101477618B1
KR101477618B1 KR20130095695A KR20130095695A KR101477618B1 KR 101477618 B1 KR101477618 B1 KR 101477618B1 KR 20130095695 A KR20130095695 A KR 20130095695A KR 20130095695 A KR20130095695 A KR 20130095695A KR 101477618 B1 KR101477618 B1 KR 101477618B1
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KR
South Korea
Prior art keywords
bumper beam
crash box
vehicle
channel
reinforcing ribs
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KR20130095695A
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Korean (ko)
Inventor
임종명
최지환
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한화첨단소재 주식회사
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Priority to KR20130095695A priority Critical patent/KR101477618B1/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
    • B60R19/18—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
    • B60R19/023—Details
    • 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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • 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
    • 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
    • B60R2019/1893—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 comprising a multiplicity of identical adjacent shock-absorbing means

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

Abstract

The present invention relates to a bumper beam for a vehicle with enhanced crash capability, which includes a crash box setting part provided to both ends of the vehicle bumper beam having a curvature, and a crash box set in the crash box setting part, wherein the crash box setting part is formed as [-shaped channel, the outer side of the channel is processed to have a curvature corresponding to the curvature of the bumper beam, flanges are protruded from the upper and lower ends of the inner side of the channel and integrated, and an outer reinforcement rib is formed and integrated with the center of the outer side in such a manner that the outer reinforcement rib is sloped with the height thereof increases toward the end of the bumper beam, wherein inclination of the outer reinforcement rib is maintained equal to the inclination angle of an RCAR barrier. According to the present invention, whole impact energy is transmitted to the crash box through shape deformation of the bumper beam without using an additional reinforcement member during RCAR barrier text, so as to improve impact absorption capability, thereby enhancing crash capability and stability and satisfying text regulation.

Description

충돌성능이 향상된 자동차용 범퍼빔{BUMPER BEAM FOR VEHICLE WITH ENHANCED CRASH CAPABILITY}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bumper beam for a vehicle,

본 발명은 자동차용 범퍼빔에 관한 것으로, 보다 상세하게는 유럽을 중심으로 새롭게 규정되고 있는 RCAR 테스트 규격을 만족시킬 수 있도록 경량화되면서 RCAR 충돌시 충돌에너지를 효과적이고 효율적으로 전달하여 충격에너지를 최대한 분산 흡수하여 탑승자를 보호할 수 있도록 개선된 충돌성능이 향상된 자동차용 범퍼빔에 관한 것이다.
The present invention relates to a bumper beam for an automobile, and more particularly, to a bumper beam for automobiles. More particularly, the present invention relates to a bumper beam for automobiles, To an automobile bumper beam with improved collision performance so that the occupant can be absorbed and absorbed.

일반적으로, 자동차용 범퍼 시스템은 자동차의 저속 충돌시 탄성적으로 변형하여 자동차의 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 완충수단이다.In general, a bumper system for an automobile is designed to elastically deform at the time of a low-speed collision of an automobile to initialize the physical damage of the automobile. It absorbs the impact when colliding with another automobile or a fixed body, And at the same time, it is a buffering means disposed at the front and rear of the vehicle so as to minimize the deformation of the vehicle body.

일 예로, 도 1과 같이 자동차용 범퍼빔 시스템은 범퍼커버(1)와 'C' 형상의 범퍼빔(2) 사이에 충격에너지의 흡수를 위한 에너지업소버(3)가 개재되며, 스테이(4)에 의해 범퍼빔(2)이 고정된 구조로 이루어진다.1, an automotive bumper beam system includes an energy absorber 3 for absorbing impact energy between a bumper cover 1 and a 'C' shaped bumper beam 2, And the bumper beam 2 is fixed by the bumper beam 2.

그리하여, 자동차 충돌시 범퍼커버(1)로부터 전달된 충격은 먼저 에너지업소버(3)에서 탄성적으로 흡수된 후 다음 강성을 갖는 범퍼빔(2)에 의해 차단되며, 이를 통해 차체의 변형을 최소화시킴으로써 탑승자의 안전을 확보하게 된다.Thus, the impact transmitted from the bumper cover 1 in the event of an automobile collision is first elastically absorbed in the energy absorber 3 and then blocked by the bumper beam 2 having the next rigidity, thereby minimizing the deformation of the vehicle body Thereby ensuring the safety of the passenger.

따라서, 범퍼 시스템에 대한 법규는 매우 엄격하며, 특히 유럽 시장의 경우에는 요구사항이 매우 까다롭고 더 엄격하다.Therefore, the regulations on bumper systems are very strict, especially in the European market, the requirements are very demanding and more stringent.

예컨대, 유럽 사양의 경우 요구 스펙(Spec)은 ECE R42 테스트 및 풀 배리어(Full Barrier) 테스트, RCAR 배리어 테스트 등이 있는데, 특히 RCAR 배리어 테스트의 경우 최근 관련 규정이 더욱 강화되면서 이를 만족시킬 필요성이 대두되었다.For example, in the case of the European specification, the required specifications are the ECE R42 test, the full barrier test, the RCAR barrier test, etc. In particular, in the case of the RCAR barrier test, .

이와 관련하여, 공개특허 제2011-0013602호가 개시되어 있지만, 이를 포함한 기존 사양의 경우 크래쉬박스(혹은 스테이)가 마운팅된 양단부가 경사를 갖고 있기 때문에 RCAR 배리어 테스트시 충돌에너지가 크래쉬박스로 완전히 전달되지 못하여 충돌시 충격이 미처 흡수되지 못한 상황에서 파단되거나 파손되면서 그 충격이 그대로 자체 쪽으로 전달되어 피해를 키우는 단점이 있었다.In this regard, although the prior art patent specification No. 2011-0013602 discloses, since the both ends mounted with the crash box (or stay) are inclined, the collision energy is not completely transferred to the crash box during the RCAR barrier test The impact is broken or broken in the state where the shock is not absorbed by the collision, and the impact is transmitted to itself as it is, and the damage is increased.

때문에, 당연히 RCAR 배리어 테스트 규정도 만족시키지 못하는 한계가 있어 왔다.
As a result, there has been a limit of satisfying the RCAR barrier test rule.

본 발명은 상술한 바와 같은 종래 기술상의 한계점을 감안하여 이를 해결하고자 창출된 것으로, 별도의 보강부재를 사용하지 않으면서도 범퍼빔 자체의 형상과 구조만으로도 충돌흡수력을 극대화시킴과 동시에 침입량은 극소화시키도록 개선된 자동차용 범퍼빔을 제공함에 그 주된 목적이 있다.
The present invention has been made in view of the above-mentioned limitations of the prior art, and it is an object of the present invention to maximize the collision absorbing force and minimize the penetration amount by using only the shape and structure of the bumper beam itself without using a separate reinforcing member So as to provide a bumper beam for an automobile.

본 발명은 상기한 목적을 달성하기 위한 수단으로, 곡률을 갖는 자동차의 범퍼빔 양단부에 구비된 크래쉬박스 설치부, 상기 크래쉬박스 설치부에 장착되는 크래쉬박스를 포함하는 자동차용 범퍼빔에 있어서; 상기 크래쉬박스 설치부는 'ㄷ' 형상의 채널로 성형되고, 상기 채널의 바깥면은 상기 범퍼빔의 곡률과 대응되게 곡률가공되며, 상기 채널의 안쪽면은 상하단에 플랜지가 평행하게 돌출되어 일체를 이루고, 상기 바깥면 중앙에는 범퍼빔의 단부를 향해 높이가 점점 높아지는 형태로 경사지게 외측보강리브를 일체로 더 형성하되, 상기 외측보강리브의 경사는 RCAR 배리어의 경사각과 동일하게 유지되는 것을 특징으로 하는 충돌성능이 향상된 자동차용 범퍼빔을 제공한다.The present invention provides a vehicle bumper beam including a crash box mounting portion provided at both ends of a bumper beam of an automobile having a curvature and a crash box mounted to the crash box mounting portion, The outer surface of the channel is curved so as to correspond to the curvature of the bumper beam. The inner surface of the channel is integrally formed with upper and lower flanges projecting in parallel to each other And an outer reinforcing rib integrally formed at the center of the outer surface such that the height of the outer reinforcing rib is gradually increased toward the end of the bumper beam. The inclination of the outer reinforcing rib is maintained to be equal to the inclination angle of the RCAR barrier Thereby providing an automobile bumper beam with improved performance.

이때, 상기 외측보강리브의 경사는 8-12°로 유지되는 것에도 그 특징이 있다.At this time, the inclination of the outer reinforcing rib is also maintained at 8-12 degrees.

또한, 상기 채널의 안쪽면에는 상기 외측보강리브와 대응되는 위치에 내측보강리브가 다수 형성되되, 상기 내측보강리브는 경사없이 단순 돌출된 것에도 그 특징이 있다.Further, on the inner surface of the channel, a plurality of inner reinforcing ribs are formed at positions corresponding to the outer reinforcing ribs, and the inner reinforcing ribs are easily protruded without inclining.

뿐만 아니라, 상기 내측보강리브는 외측보강리브의 돌출높이 보다 낮게 돌출된 것에도 그 특징이 있다.In addition, the inner reinforcing rib is characterized by being protruded lower than the projecting height of the outer reinforcing rib.

아울러, 상기 플랜지는 중량이 무거운 차 일수록 중량이 가벼운 차에 비해 상대적으로 더 길게 형성된 것에도 그 특징이 있다.
In addition, the flange is characterized in that the weight of the flange is relatively longer than that of the light car.

본 발명에 따르면, 자동차 충돌시 별도의 보강부재를 갖추지 않고, 범버빔 자체의 형상 변형을 통해 RCAR 배리어 테스트시 충돌에너지를 전량 그대로 크래쉬박스로 전달토록 하여 충격 흡수능력을 향상시킴으로써 충돌성능을 우수하게 하고, 안전성을 높이며, 테스트 규정도 만족시키는 효과를 얻을 수 있다.
According to the present invention, impact resistance can be improved by improving the shock absorbing ability by transferring the collision energy to the crash box in the RCAR barrier test by deforming the shape of the bumper beam itself without providing a separate reinforcement member in case of an automobile collision, , The safety is enhanced, and the test rule is satisfied.

도 1은 일반적인 자동차의 범퍼빔 시스템을 보인 예시도이다.
도 2는 본 발명에 따른 자동차 범퍼빔을 보인 예시도이다.
도 3은 도 2의 범버빔 일측 단부를 횡방향으로 절단하여 예시한 측면도이다.
도 4는 도 2의 범버빔 형상을 상부에서 본 개략적인 평면도이다.
도 5는 본 발명에 따른 범버빔을 RCAR 배리어 테스트한 해석 결과 그래프이다.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a general automobile bumper beam system. FIG.
2 is an exemplary view showing an automobile bumper beam according to the present invention.
3 is a side view illustrating one end of the bumper beam shown in Fig. 2 cut in a lateral direction.
Fig. 4 is a schematic plan view of the bumper beam shape of Fig. 2 viewed from above. Fig.
FIG. 5 is a graph of an analysis result obtained by RCAR barrier test of a bumble beam according to the present invention.

이하에서는, 첨부도면을 참고하여 본 발명에 따른 바람직한 실시예를 보다 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명 설명에 앞서, 이하의 특정한 구조 내지 기능적 설명들은 단지 본 발명의 개념에 따른 실시예를 설명하기 위한 목적으로 예시된 것으로, 본 발명의 개념에 따른 실시예들은 다양한 형태로 실시될 수 있으며, 본 명세서에 설명된 실시예들에 한정되는 것으로 해석되어서는 아니된다.Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

또한, 본 발명의 개념에 따른 실시예는 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있으므로, 특정 실시예들은 도면에 예시하고 본 명세서에 상세하게 설명하고자 한다. 그러나, 이는 본 발명의 개념에 따른 실시예들을 특정한 개시 형태에 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경물, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

도 2 내지 도 3에 도시된 바와 같이, 본 발명에 따른 자동차용 범퍼빔(100)은 크래쉬박스(Crach Box)가 마운팅되는 범퍼빔(100)의 양단부 형상과 구조를 개선하여 보강 및 경사각 조절을 통해 충돌시 받은 충격량이 거의 그대로 크래쉬박스로 전달됨은 물론 그 과정에서 충격 흡수가 이루어지도록 구성된다.2 to 3, the bumper beam 100 for an automobile according to the present invention can improve the shape and structure of both ends of a bumper beam 100 on which a crush box is mounted, The impact received during the collision is transmitted to the crash box almost as it is, and the shock absorption is performed in the process.

덧붙여, 상기 범퍼빔(100)은 경량화를 위해 종래 기술에서 설명하였던 유리섬유 강화 열가소성수지로 성형된 것임은 물론이다.It is needless to say that the bumper beam 100 is formed of a glass fiber-reinforced thermoplastic resin which has been described in the prior art for weight saving.

보다 구체적으로, 상기 범퍼빔(100)의 양단, 즉 크래쉬박스 설치부(110)는 기본적으로 'ㄷ'형 채널로 이루어진다.More specifically, both ends of the bumper beam 100, that is, the crash box mounting part 110, are basically made of a 'C' shaped channel.

이때, 상기 'ㄷ'형 채널인 크래쉬박스 설치부(110)의 바깥면, 다시 말해 크래쉬박스가 설치되는 쪽 반대면은 범퍼빔(100)의 곡률을 따라 그와 동일한 곡률로가공된다.At this time, the outer surface of the crash box mounting part 110, that is, the opposite side to which the crash box is installed, is processed to have the same curvature along the curvature of the bumper beam 100.

그리고, 상기 크래쉬박스 설치부(110)의 곡률진 바깥면에는 상하 높이방향으로 간격을 두고 대략 중앙부에 외측보강리브(120)가 돌출되는 형태로 크래쉬박스 설치부(110)와 일체로 형성된다.The outer side reinforcing ribs 120 protrude from the outer surface of the crash box mounting part 110 at a substantially central portion with a space therebetween in the up-and-down direction and are integrally formed with the crush box mounting part 110.

이 경우, 상기 외측보강리브(120)는 통상적인 강도 보강의 개념이 아니라, 단면 보강의 개념으로서 RCAR 배리어 테스트시 차량과 빗겨 충돌될 때 각도 차로 인해 발생하는 충돌에너지 전달효율 저하를 막기 위해 RCAR 배리어 테스트시 사용되는 RCAR 배리어 각도와 동일하게 유지되는데, 이를 테면 대략 10°, 바람직하게는 8-12°의 범위의 경사각을 유지하도록 구성된다.In this case, the outer reinforcing rib 120 is not a general strength reinforcement concept, but is a concept of a cross-sectional reinforcement. In order to prevent a collision energy transmission efficiency deterioration due to an angular difference when a vehicle collides with an RCAR barrier test, Is maintained to be equal to the RCAR barrier angle used in the test, such as to maintain a tilt angle in the range of about 10 degrees, preferably 8-12 degrees.

이때, 상기 외측보강리브(120)은 일단에서 타단을 향해 점점 두꺼워지게 가공되며, 바람직하게는 도 4에 도시된 크래쉬박스 설치부(110)를 기준으로 했을 때 범퍼빔(100)의 중앙이 아닌 단부쪽으로 갈수록 더 두껍게 유지되도록 하여 범퍼빔(100)이 곡률에 의해 양끝단의 경사각이 커지는 것을 막도록 구성된다.At this time, the outer reinforcing ribs 120 are gradually thickened from one end to the other end. Preferably, the outer reinforcing ribs 120 are formed so as not to be located at the center of the bumper beam 100 So that the bumper beam 100 is prevented from increasing in inclination angle at both ends by the curvature.

따라서, RCAR 배리어 테스트시 본 발명에 따른 범퍼빔(100)의 경우, 기존 범퍼빔에 비해 충돌시 접하는 면적이 빗겨 맞는 면적보다 크게 되어 충돌에너지가 거의 대부분 크래쉬박스로 전달될 수 있어 충격에너지 흡수, 다시 말해 충돌성능을 향상시킬 수 있게 된다.Therefore, in the case of the RCAR barrier test, the bumper beam 100 according to the present invention has an area larger than that of a conventional bumper beam, which is in contact with the bumper beam, so that the impact energy can be almost transferred to the crash box, In other words, the collision performance can be improved.

또한, 상기 크래쉬박스 설치부(110)의 내면에는 도 3과 같이, 상기 외측보강리브(120)와 대응되게 내측보강리브(130)가 일체로 돌출 형성된다.As shown in FIG. 3, an inner reinforcing rib 130 is integrally formed on an inner surface of the crash box mounting part 110 so as to correspond to the outer reinforcing ribs 120.

다만, 상기 내측보강리브(130)는 외측보강리브(120)와 달리 경사지지 않으며, 돌출 높이도 외측보강리브(120) 보다 낮게 돌출된다.However, the inner reinforcing ribs 130 are not inclined differently from the outer reinforcing ribs 120, and the projecting height of the inner reinforcing ribs 130 is lower than that of the outer reinforcing ribs 120.

이러한 내측보강리브(130)는 충돌시 상기 크래쉬박스 설치부(110)의 파단이나 변형을 최소화시키고 받은 충돌에너지를 곧바로 크래쉬 박스로 전달하는데 용이한 구조적 특성을 구현하게 된다.Such an inner reinforcing rib 130 minimizes breakage or deformation of the crash box mounting part 110 when colliding, and realizes a structural characteristic that is easy to transmit the received impact energy directly to the crash box.

덧붙여, 상기 크래쉬박스 설치부(110)를 구성하는 외측면, 즉 'ㄷ'형상의 상하 양측으로 돌출된 플랜지(140)는 차량의 중량에 따라 그 길이가 가변되도록 설계함이 바람직하다.In addition, it is preferable that the flange 140 protruding to the upper and lower sides of the outer surface of the crash box mounting portion 110, that is, 'C' shape, is designed to have a variable length depending on the weight of the vehicle.

여기에서, 상기 플랜지(140)의 길이가 가변된다는 의미는 하나의 범퍼빔(100)을 가지고 차량 중량에 따라 길이를 가변시켜 다양하게 적용시킬 수 있다는 의미가 아니라, 차량 중량에 맞게 차량 별로 플랜지(140)의 길이를 달리하여 대응되는 범퍼빔(100)을 성형함으로써 중량별로 달라지는 충돌에너지를 충분하고 원활하게 흡수 전달할 수 있도록 구성한다는 의미이다.Here, the meaning of the length of the flange 140 is not limited to varying the length of the bumper beam 100 depending on the weight of the vehicle, The bumper beam 100 is formed by molding the corresponding bumper beam 100 with different lengths.

이러한 구성으로 이루어진 본 발명의 차량용 범퍼빔의 에너지 흡수 특성, 다시 말해 충돌에너지를 크래쉬박스 쪽으로 전달하는 효율 특성을 확인하기 위해 상술한 구성으로 이루어진 범퍼빔을 실험용 차량에 설치한 후 RCAR 배리어 테스트를 실시하였다.In order to confirm the energy absorption characteristics of the vehicle bumper beam of the present invention having such a configuration, that is, the efficiency characteristics of transmitting the impact energy to the crash box, the bumper beam having the above-described configuration was installed in the test vehicle, Respectively.

상기 테스트와 관련된 도면과 결과는 도 5에 나타내었으며, 충돌 전,후 범퍼빔의 손상여부와, 크래쉬박스로의 충돌에너지 전달 상태를 분석시스템으로 해석하여 그래프로 나타내었다.The test results and the results of the test are shown in FIG. 5, and the damage of the bumper beam before and after the collision and the collision energy transfer to the crash box are analyzed and analyzed by the analysis system.

도 5에 따르면, 충돌시 가해진 힘에 따른 크래쉬박스의 변위가 나타나 있는데, 본 발명에 따른 범퍼빔의 경우 스펙을 만족시키면서 빔 손상없이 충돌시 크래쉬박스로의 충돌에너지 전달 성능이 우수한 것으로 확인되었다.
According to FIG. 5, the displacement of the crash box according to the force applied at the time of the collision is shown. In the case of the bumper beam according to the present invention, it is confirmed that the bumper beam satisfies the specification and is superior in the collision energy transfer performance to the crash box at the time of collision without collision.

100: 범퍼빔 110: 크래쉬박스 설치부
120: 외측보강리브 130: 내측보강리브
140: 플랜지100: Bumper beam 110: Crash box installation part
120: outer reinforcing ribs 130: inner reinforcing ribs
140: Flange

Claims (5)

곡률을 갖는 자동차의 범퍼빔 양단부에 구비된 크래쉬박스 설치부, 상기 크래쉬박스 설치부에 장착되는 크래쉬박스를 포함하는 자동차용 범퍼빔에 있어서;
상기 크래쉬박스 설치부는 'ㄷ' 형상의 채널로 성형되고,
상기 채널의 바깥면은 상기 범퍼빔의 곡률과 대응되게 곡률가공되며,
상기 채널의 안쪽면은 상하단에 플랜지가 평행하게 돌출되어 일체를 이루고,
상기 바깥면 중앙에는 범퍼빔의 단부를 향해 높이가 점점 높아지는 형태로 경사지게 외측보강리브를 일체로 더 형성하되,
상기 외측보강리브의 경사는 8-12°로 유지되는 것을 특징으로 하는 충돌성능이 향상된 자동차용 범퍼빔.
A bumper beam for a vehicle, comprising: a crash box mounting portion provided at both ends of a bumper beam of a vehicle having a curvature; and a crash box mounted to the crash box mounting portion;
The crash box installation part is formed into a 'C' shaped channel,
The outer surface of the channel is curved so as to correspond to the curvature of the bumper beam,
The inner surface of the channel is integrally formed with flanges projecting in parallel at upper and lower ends,
And the outer reinforcing ribs are integrally formed at the center of the outer surface so as to be inclined in such a manner that the height thereof gradually increases toward the ends of the bumper beam,
Characterized in that the inclination of the outer reinforcing ribs is maintained at 8-12 degrees.
삭제delete 청구항 1에 있어서;
상기 채널의 안쪽면에는 상기 외측보강리브와 대응되는 위치에 내측보강리브가 다수 형성되되, 상기 내측보강리브는 경사없이 단순 돌출된 것을 특징으로 하는 충돌성능이 향상된 자동차용 범퍼빔.
The method of claim 1,
Wherein a plurality of inner reinforcing ribs are formed on the inner surface of the channel at positions corresponding to the outer reinforcing ribs, and the inner reinforcing ribs are simply protruded without inclination.
청구항 3에 있어서;
상기 내측보강리브는 외측보강리브의 돌출높이 보다 낮게 돌출된 것을 특징으로 하는 충돌성능이 향상된 자동차용 범퍼빔.
The method of claim 3,
Wherein the inner reinforcing rib is protruded lower than the projecting height of the outer reinforcing rib.
청구항 1에 있어서;
상기 플랜지는 중량이 무거운 차 일수록 중량이 가벼운 차에 비해 상대적으로 더 길게 형성된 것을 특징으로 하는 충돌성능이 향상된 자동차용 범퍼빔.The method of claim 1,
Wherein the flange is formed so that the weight of the flange is relatively longer than the weight of the car.
KR20130095695A 2013-08-13 2013-08-13 Bumper beam for vehicle with enhanced crash capability KR101477618B1 (en)

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KR20180078639A (en) 2016-12-30 2018-07-10 한화첨단소재 주식회사 Rear bumper casting mold
CN112172718A (en) * 2020-10-10 2021-01-05 宁波昌扬机械工业有限公司 Effectual car anticollision crossbeam of energy-absorbing
CN115781189A (en) * 2022-12-01 2023-03-14 河南科技大学 Machining method for automobile anti-collision beam

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104802741A (en) * 2015-05-12 2015-07-29 苏州万隆汽车零部件股份有限公司 Bumper
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KR101780568B1 (en) * 2015-12-30 2017-09-22 한화첨단소재 주식회사 Bumper beam for vehicle with enhanced crash capability, method of manufacturing thereof and bumper system
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CN112172718B (en) * 2020-10-10 2021-09-24 宁波昌扬机械工业有限公司 Effectual car anticollision crossbeam of energy-absorbing
CN115781189A (en) * 2022-12-01 2023-03-14 河南科技大学 Machining method for automobile anti-collision beam
CN115781189B (en) * 2022-12-01 2024-05-21 河南科技大学 Processing method for automobile anti-collision beam

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