KR20080036674A - Front impact absorption means of vehicle - Google Patents

Front impact absorption means of vehicle Download PDF

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Publication number
KR20080036674A
KR20080036674A KR1020060103185A KR20060103185A KR20080036674A KR 20080036674 A KR20080036674 A KR 20080036674A KR 1020060103185 A KR1020060103185 A KR 1020060103185A KR 20060103185 A KR20060103185 A KR 20060103185A KR 20080036674 A KR20080036674 A KR 20080036674A
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South Korea
Prior art keywords
shock absorbing
absorbing member
vehicle
support
support surface
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KR1020060103185A
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Korean (ko)
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이주상
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현대자동차주식회사
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Priority to KR1020060103185A priority Critical patent/KR20080036674A/en
Publication of KR20080036674A publication Critical patent/KR20080036674A/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
    • B60R19/24—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
    • B60R19/18—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)
  • Body Structure For Vehicles (AREA)

Abstract

A structure of absorbing impact on the front side of a vehicle is provided to improve shock absorbing performance by installing a second impact absorption member in an impact absorption member coupled between a front side member and a bumper beam such that the impact is reduced in multiple stages. A structure of absorbing impact on a front side of a vehicle comprises a bracket(12). The bracket is installed between the front end of a front side member(10) and the rear end of an impact absorption member(15), and has a hole(21). A second impact absorption member(24), having an inclined support surface(22) inclined to the rear side and a support(25) supported on the inclined support surface, is installed between the inclined support surface and a bumper beam(13).

Description

차량의 전방 충격흡수구조 {FRONT IMPACT ABSORPTION MEANS OF VEHICLE}Front shock absorber structure of vehicle {FRONT IMPACT ABSORPTION MEANS OF VEHICLE}

도 1은 본 발명의 실시예의 분해 사시도1 is an exploded perspective view of an embodiment of the present invention

도 2는 본 발명의 실시예의 종단면도2 is a longitudinal sectional view of an embodiment of the present invention;

도 3a, 3b는 본 발명의 실시예의 작용 상태도3a, 3b is an operational state diagram of an embodiment of the present invention

<도면의 주요 부분에 대한 부호의 설명>             <Explanation of symbols for main parts of the drawings>

10 : 프론트 사이드 멤버 12 : 브라켓 13 : 범퍼 빔10 front side member 12 bracket 13 bumper beam

15 : 충격흡수부재 24 : 제 2 충격흡수부재15: shock absorbing member 24: second shock absorbing member

25 : 지지부 26 : 흡수부재 본체 29 : 지지판25 support portion 26 absorber body 29 support plate

본 발명은 차량의 전방 충격흡수구조에 관한 것이며, 상세하게는 프론트 사이드 멤버와 범퍼 빔 사이에 폐단면의 충격흡수부재를 설치한 차량의 전방 충격흡수구조의 개량에 관한 것이다.The present invention relates to a front shock absorbing structure of a vehicle, and more particularly, to an improvement of a front shock absorbing structure of a vehicle provided with a shock absorbing member of a closed section between a front side member and a bumper beam.

주지하는 바와 같이, 자동차는 차체를 구성하는 프론트 사이드 멤버와 범퍼의 범퍼 빔 사이에 충격흡수부재를 배치하여 범퍼에 충격력(충돌에너지)이 작용하면 상기 충격흡수부재가 축방향으로 압축 변형하면서 충격력을 흡수하도록 되어 있 으며, 상기 충격흡수부재는 저렴하고, 또한 충격력이 작용할 때 양호하게 압축 변형되어 프론트 사이드 멤버의 변형을 최소화하여야 수리비를 절감할 수 있는 것이다.As is well known, the automobile is arranged between the front side member constituting the vehicle body and the bumper beam of the bumper so that when the impact force (collision energy) is applied to the bumper, the impact absorbing member compresses and deforms the axial direction in the axial direction. The shock absorbing member is inexpensive, and it is inexpensive and satisfies the compression deformation when the impact force is applied, thereby minimizing the deformation of the front side member to reduce the repair cost.

상기한 요구를 충족하기 위한 차량의 충격흡수부재가 일본국 특허출원공개번호 특개 2005-1462 호 공보에 개시되어 있다.A shock absorbing member of a vehicle for satisfying the above requirement is disclosed in Japanese Patent Application Laid-Open No. 2005-1462.

상기 차량의 충격흡수부재 즉 크래쉬 박스(crash box)는 알루미늄합금 단조에 의하여 통상으로 형성한 충격흡수부와, 상기 충격흡수부의 축방향 일단부에 축방향과 교차하는 방향으로 돌출시켜 범퍼골격부재에 체결수단으로 고정하는 범퍼측 취부부와, 상기 충격흡수부의 축방향 타단부에 축방향으로 연장 설치하여 차량골격부재에 체결수단으로 고정하는 차량측 취부부를 일체로 형성하여서, 범퍼골격부재 측으로부터 충격력이 작용하면 충격흡수부재가 축방향으로 압축 변형하면서 충격력을 흡수하도록 한 것이다The shock absorbing member of the vehicle, that is, the crash box (crash box) is a shock absorbing portion formed by forging aluminum alloy, and the axial end portion of the shock absorbing portion protrudes in the direction intersecting the axial direction to the bumper skeleton member. The bumper side mounting portion fixed by the fastening means, and the vehicle side mounting portion fixedly installed on the vehicle skeleton member by the fastening means by being axially extended to the other axial end of the shock absorbing portion from the bumper skeleton member side. When the impact force acts, the shock absorbing member compresses and deforms in the axial direction to absorb the impact force.

그러나 상기한 차량의 충격흡수부재는 알루미늄 소재를 절단한 후 단조를 실시하고, 나사구멍을 형성하여야 함으로써 제조공정이 복잡하여 비용이 과다하게 소요되고, 또한 충격흡수부는 그 축방향 전후의 단면계수가 동일함으로 충돌시에 축방향 전길이에 걸쳐 균일하게 압축된 후 흡수되지 못한 충격력이 충격흡수부와 차량골격부재(프론트 사이드 멤버)의 체결부위에 전달됨으로써 충돌사고시에 프론트 사이드 멤버까지 수리하여야 하기 때문에 수리비가 과도하게 소요되는 문제점이 있는 것이다.However, the above-described shock absorbing member of the vehicle has to be forged after cutting aluminum material, and a screw hole is formed, which makes the manufacturing process complicated and requires excessive cost. In the same way, the impact force that was not absorbed after being uniformly compressed over the entire axial length at the time of collision is transmitted to the joint between the shock absorber and the vehicle skeleton member (front side member). There is a problem that excessive repair costs.

본 발명은 상기한 문제점을 시정하여, 저렴하게 제조하고, 충격력의 흡수를 양호하게 한 차량의 전방 충격흡수구조를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION An object of the present invention is to provide a front shock absorbing structure for a vehicle in which the above-mentioned problems are corrected, manufactured at low cost, and the absorption of impact force is improved.

상기한 목적을 달성하기 위하여, 본 발명은 프론트 사이드 멤버의 선단과 범퍼 빔 사이에 폐단면의 충격흡수부재를 볼트로 결합한 것에 있어서, 상기 프론트 사이드 멤버의 선단과 충격흡수부재의 후단 사이에 설치하는 브라켓에 구멍을 형성함과 아울러 후방측으로 경사진 경사 지지면을 형성하고, 상기 경사 지지면과 범퍼 빔 사이에, 후방에 상기 지지면에 지지되는 지지부를 형성한 제 2 충격흡수부재를 설치하여서 된 것이다.In order to achieve the above object, the present invention is a bolt between the shock absorbing member of the closed section between the front end of the front side member and the bumper beam, provided between the front end of the front side member and the rear end of the shock absorbing member. By forming a hole in the bracket and forming an inclined support surface which is inclined to the rear side, and between the inclined support surface and the bumper beam, there is provided a second shock absorbing member having a support portion supported on the support surface at the rear. will be.

본 발명은 도 1 및 도 2에 도시한 바와 같이, 프론트 사이드 멤버(10)의 선단에 플랜지(11)를 형성하여 상기 플랜지(11)에 캐리어 설치용 브라켓(12)을 설치하고, 상기 브라켓(12)과 범퍼 빔(13) 사이에, 전후방에 플랜지(16a)(16b)를 형성한 폐단면의 충격흡수부재(15)를 볼트(17a)(17b)로 결합한 것에 있어서, 상기 브라켓(12)에 원형 또는 타원형의 구멍(21)을 형성함과 아울러 후방측으로 경사진 경사 지지면(22)을 일체로 형성하고, 상기 경사 지지면(22)과 범퍼 빔(13) 사이에, 후방에 상기 경사 지지면(22)에 지지되는 마름모꼴 단면의 지지부(25)를 형성한 제 2 충격흡수부재(24)를 설치하여서 된 것이다.1 and 2, the flange 11 is formed at the front end of the front side member 10 to install the carrier mounting bracket 12 on the flange 11, and the bracket 12 ), The shock absorbing member 15 of the closed end surface having the flanges 16a and 16b formed between the bumper beam 13 and the bumper beam 13 by bolts 17a and 17b. While forming a circular or oval hole 21, the inclined support surface 22 inclined to the rear side is integrally formed, and the inclined support is rearward between the inclined support surface 22 and the bumper beam 13. The second shock absorbing member 24 provided with the support portion 25 having a rhombic cross section supported on the surface 22 is provided.

상기 제 2 충격흡수부재(24)는 흡수부재 본체(26)는 원형, 타원형 등의 중공상으로 형성하고, 그 후방에 형성한 지지부(25)를 마름모꼴 단면으로 형성하여 그 후방 지지면(27)을 상기 경사 지지면(22)과 동일 경사면으로 형성하여 상호 밀착시 키고, 상기 지지부(25)의 후방에 상기 구멍(21)과 동일 단면의 지지원통(28)을 형성하여 상기 구멍(21)에 끼우며, 또한 상기 흡수부재 본체(26)의 전방에는 스폰지 등의 지지판(29)을 설치하여 범퍼 빔(13)에 밀착하거나 접착하여서 충격력을 양호하게 흡수함과 아울러 설치를 견고하게 하여 주행시에도 정상위치를 양호하게 유지토록 한 것이다.The second shock absorbing member 24 has an absorbing member main body 26 formed in a hollow shape such as a circle, an oval shape, and a supporting portion 25 formed at the rear thereof in a rhombic cross section, and the rear supporting surface 27 thereof. Are formed in the same inclined surface as the inclined support surface 22 to be in close contact with each other, and a support cylinder 28 having the same cross section as the hole 21 is formed in the rear of the support portion 25 to the hole 21. In addition, in front of the absorbing member main body 26, a support plate 29, such as a sponge, is installed in close contact with or adhered to the bumper beam 13 to absorb shock force well and to firmly install the vehicle while driving. To maintain good position.

그리고 상기 구멍(21)의 주위에 대칭되게 수개의 노치(30)를 설치하여 제 2 충격흡수부재(24)가 경사 지지면(22)에 충격력을 가할 때 노치(30) 부분이 파열되면서 충격력을 흡수함으로써 프론트 사이드 멤버(10)에 충격력이 전달되는 것을 억제 내지 방지하는 것이다.In addition, a plurality of notches 30 are symmetrically installed around the hole 21 so that when the second shock absorbing member 24 exerts an impact force on the inclined support surface 22, the notch 30 is ruptured and thus impact force is generated. By absorbing, it is to suppress or prevent the impact force from being transmitted to the front side member 10.

또한 상기 지지원통(28)에 노치(30)와 동일숫자의 돌기(31)를 설치하여 돌기 (31)를 구멍(21)의 후방에 위치시킴으로써 제 2 충격흡수부재(24)의 설치를 더욱더 견고하게 한 것이다.In addition, by installing the projection 31 of the same number as the notch 30 in the support cylinder 28 and positioning the projection 31 behind the hole 21, the installation of the second shock absorbing member 24 is more robust. It is made.

미 설명부호 18은 보강 브라켓이다.Reference numeral 18 is a reinforcing bracket.

이상과 같은 본 발명은 전방충돌시 범퍼 빔(13)에 가하여지는 충격력은 충격흡수부재(15)에 전달되어 그 전방부를 변형시키면서 충격력을 흡수하고, 이때 제 2 충격흡수부재(24)의 흡수부재 본체(26)의 전방에 설치한 지지판(29)도 함께 수축되는 것이다(도 3a 참조).In the present invention as described above, the impact force applied to the bumper beam 13 during the front collision is transmitted to the shock absorbing member 15 to absorb the impact force while deforming the front portion, wherein the absorbing member of the second shock absorbing member 24 The support plate 29 provided in front of the main body 26 is also contracted together (see FIG. 3A).

상기와 같이 충격흡수부재(15)의 전방부에서 충격력이 흡수된 후 범퍼 빔 (13)이 변형하면서 충격력을 흡수한 다음 충격흡수부재(15)의 후방부가 변형함과 동시에 제 2 충격흡수부재(24)의 후방에 형성한 지지부(25)의 후방 지지면(27)이 브라켓(12)의 경사 지지면(22)을 변형시키면서 충격력을 흡수하는 것이다(도 3b 참조).As described above, after the impact force is absorbed from the front portion of the shock absorbing member 15, the bumper beam 13 deforms to absorb the shock force, and then the rear portion of the shock absorbing member 15 is deformed and at the same time the second shock absorbing member ( The rear support surface 27 of the support portion 25 formed behind the 24 absorbs the impact force while deforming the inclined support surface 22 of the bracket 12 (see FIG. 3B).

상기와 같이 전방충돌시 그 충격력을 충격흡수부재(15)에서 흡수하고 다음에 제 2 충격흡수부재(24)에서 흡수함으로 충격력의 흡수가 양호하고, 또한 충격흡수부재(15) 및 제 2 충격흡수부재(24)는 강판으로 제조함으로 저렴하게 제조할 수 있는 것이다.As described above, the impact force is absorbed by the shock absorbing member 15 during the frontal collision and then absorbed by the second shock absorbing member 24, so that the shock force is absorbed well, and the shock absorbing member 15 and the second shock absorbing member are absorbed. The member 24 can be manufactured inexpensively by manufacturing with a steel plate.

이상과 같이 본 발명은 프론트 사이드 멤버와 범퍼 빔 사이에 결합된 충격흡수부재 내부에 제 2 충격흡수부재를 설치하여 전방충돌시 그 충격력을 다단계로 흡수함으로써 충격력의 흡수가 양호하고, 상기와 같이 충격력의 흡수가 양호하면 프론트 사이드 멤버에 전달되는 충격력을 최소화함으로써 수리비를 대폭 절감할 수 있는 것이다.As described above, in the present invention, the second shock absorbing member is installed inside the shock absorbing member coupled between the front side member and the bumper beam to absorb the impact force in multiple stages during frontal collision. If absorption is good, repair cost can be greatly reduced by minimizing the impact force transmitted to the front side member.

또한 충격흡수부재와 제 2 충격흡수부재는 강판을 성형한 후 용접 결합함으로 종래 알루미늄합금 단조제품에 비하여 원가를 대폭 절감할 수 있는 것이다.In addition, the shock absorbing member and the second shock absorbing member can be significantly reduced in cost compared to the conventional aluminum alloy forged products by forming a steel sheet and welded.

Claims (4)

프론트 사이드 멤버의 선단과 범퍼 빔 사이에 폐단면의 충격흡수부재를 볼트로 결합한 것에 있어서, 상기 프론트 사이드 멤버의 선단과 충격흡수부재의 후단 사이에 설치하는 브라켓에 구멍을 형성함과 아울러 후방측으로 경사진 경사 지지면을 형성하고, 상기 경사 지지면과 범퍼 빔 사이에, 후방에 상기 지지면에 지지되는 지지부를 형성한 제 2 충격흡수부재를 설치하여서 된 차량의 전방 충격흡수구조.In the case where the shock absorbing member of the closed section is bolted between the front end of the front side member and the bumper beam, a hole is formed in the bracket provided between the front end of the front side member and the rear end of the shock absorbing member. A front shock absorbing structure for a vehicle, comprising: a second shock absorbing member having a photographic inclined support surface formed therebetween, wherein a second shock absorbing member is formed between the inclined support surface and the bumper beam, and a support portion supported by the support surface at the rear. 제 1 항에 있어서, 제 2 충격흡수부재는 흡수부재 본체는 중공상으로 형성하고, 그 후방에 형성한 지지부를 마름모꼴 단면으로 형성하여 그 후방 지지면을 상기 경사 지지면과 동일 경사면으로 형성하여 상호 밀착시키고, 상기 지지부의 후방에 상기 구멍과 동일 단면의 지지원통을 형성하여 상기 구멍에 끼우며, 또한 상기 흡수부재 본체의 전방에 지지판을 설치한 차량의 전방 충격흡수구조.The method of claim 1, wherein the second shock absorbing member is formed in a hollow shape of the absorbing member main body, the support portion formed in the rear portion is formed in a rhombic cross-section, the rear support surface is formed in the same inclined surface and the inclined surface mutually And a support cylinder having the same cross section as the hole at the rear of the support portion to be in close contact with the hole, and having a support plate in front of the absorbent member main body. 제 1 항에 있어서, 구멍의 주위에 대칭되게 수개의 노치를 설치한 차량의 전방 충격흡수구조.The vehicle front shock absorbing structure according to claim 1, wherein several notches are provided symmetrically around the hole. 제 2 항에 있어서, 지지원통에 노치와 동일숫자의 돌기를 설치한 차량의 전방 충격흡수구조.The front shock absorbing structure for a vehicle according to claim 2, wherein projections having the same number as the notches are provided in the support cylinder.
KR1020060103185A 2006-10-24 2006-10-24 Front impact absorption means of vehicle KR20080036674A (en)

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