KR100243584B1 - Structure of bumper beam of a car - Google Patents

Structure of bumper beam of a car Download PDF

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Publication number
KR100243584B1
KR100243584B1 KR1019960054275A KR19960054275A KR100243584B1 KR 100243584 B1 KR100243584 B1 KR 100243584B1 KR 1019960054275 A KR1019960054275 A KR 1019960054275A KR 19960054275 A KR19960054275 A KR 19960054275A KR 100243584 B1 KR100243584 B1 KR 100243584B1
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South Korea
Prior art keywords
bumper beam
bumper
vehicle body
automobile
impact
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KR1019960054275A
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Korean (ko)
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KR19980035830A (en
Inventor
장성환
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정몽규
현대자동차주식회사
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Priority to KR1019960054275A priority Critical patent/KR100243584B1/en
Publication of KR19980035830A publication Critical patent/KR19980035830A/en
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    • 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
    • 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
    • B60R2019/1806Structural beams therefor, e.g. shock-absorbing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00Other features of vehicle sub-units
    • B60Y2306/01Reducing damages in case of crash, e.g. by improving battery protection

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

Abstract

본 발명은 자동차의 범퍼빔구조에 관한 것으로, 블로워 공법으로 플라스틱 재질로 용이하게 제작할 수 있고, 또 자동차의 주행중에 충돌이나 추돌사고시에 충격을 적절히 흡수할 수 있을 뿐만 아니라 충격저항강성도 뛰어나서 탑승자 등을 보다 안전하게 보호할 수 있도록 된 자동차의 범퍼빔구조를 제공함에 그 목적이 있다.The present invention relates to a bumper beam structure of an automobile, and can be easily manufactured from a plastic material by a blower method, and can appropriately absorb impacts during collision or collision warning during driving of a vehicle, So that the bumper beam structure of the automobile can be more safely protected.

상기한 바의 목적을 달성하기 위한 본 발명은, 차체의 폭방향을 따라 만곡되게 연장되어 범프스테이를 매개로 차체에 체결되는 빔부와, 이 빔부의 상부와 하부에 각각 형성되면서 빔부의 길이방향을 따라 연장된 4각의 로브를 갖춘 자동차의 범퍼빔에 있어서, 상기 상하의 로브사이에는 하나의 횡리브와 다수개의 종리브가 격자무늬형상으로 일체로 형성된 것을 특징으로 한다.According to an aspect of the present invention, there is provided a bumper structure including: a beam portion extending in a curved shape along a width direction of a vehicle body and fastened to a vehicle body via a bump stay; In the bumper beam of an automobile having four lobes extending along the longitudinal direction, one transverse rib and a plurality of longitudinal ribs are integrally formed in a lattice pattern between the upper and lower lobes.

이에 따라 플라스틱 재질로 블로워 공법을 사용해서 제작할 수 있으므로, 중량이 가볍고 제작하기가 용이할 뿐만 아니라 충돌시에 전체적으로 적절히 변형되면서 충격을 효과적으로 흡수하면서 충격저항강성도 우수하여 탑승자 등을 보다 안전하게 보호할 수 있는 효과가 있다.Accordingly, since it can be manufactured by using the blowing method using a plastic material, it is light in weight and easy to manufacture, and effectively absorbs impact while being appropriately deformed as a whole at the time of impact, It is effective.

Description

자동차의 범퍼빔구조Car bumper beam structure

본 발명은 자동차의 범퍼빔에 관한 것으로, 특히 플라스틱 재질로 블로워 공법으로 제작되면서 충격흡수능력이 우수하고 충격저항강성도 뛰어난 자동차의 범퍼빔구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper beam of an automobile, and more particularly, to a bumper beam structure of an automobile which is manufactured by a blowing method using a plastic material and has excellent impact absorbing capability and impact resistance.

일반적으로 자동차에는 주행중에 충돌이나 추돌사고시에 탑승자 등을 보다 안전하게 보호하기 위해 차체의 전방 및 후방에 범퍼가 장착되어 있는 바, 이 범퍼는 외면을 이루는 범퍼카바와, 충격이 가해질 때에 충격을 적절히 흡수하면서 충격저항기능을 하는 범퍼빔, 이 범퍼빔을 차체에 체결시키는 범퍼스테이 등으로 구성되어 있다.Generally, a bumper is mounted on the front and rear of the vehicle body to more safely protect the passengers during crashes or collisions during driving. The bumper bar is an outer surface of the bumper car bar, and when the impact is applied, A bumper beam that functions as an impact resistance, and a bumper stay that clamps the bumper beam to the vehicle body.

여기서 상기 범퍼빔은 충격저항강성을 높이기 위해 스틸재질로 만들어지는 경우에는 충격흡수능력을 향상시키기 위해 별도의 에너지 업소버가 결합되게 되어 있는 바, 이 스틸재질의 범퍼빔은 제작이 어렵고 구조가 복잡할 뿐만 아니라 제작단가도 비싸기 때문에 충격흡수능력과 충격저항강성이 우수한 플라스틱 범퍼빔을 사용하는 자동차도 있다.Here, when the bumper beam is made of a steel material in order to improve the impact resistance rigidity, a separate energy absorber is combined to improve the shock absorbing capability. The steel bumper beam is difficult to manufacture and has a complicated structure In addition, there are some automobiles that use plastic bumper beams that are excellent in impact absorption capacity and impact resistance stiffness because of high production cost.

도 1은 상기한 종래의 플라스틱 재질로 사출성형된 범퍼빔을 도시한 것인 바, 즉 이 범퍼빔은 차체의 폭방향을 따라 길게 연장되면서 만곡되게 형성됨과 더불어 단면이 ㄷ자채널형상으로 형성된 빔부(101)와, 이 빔부의 채널속에 일체로 형성되면서 빔부의 강성을 보완하기 위해 격자무늬형상으로 형성된 다수개의 리브(102) 및, 상기 빔부를 스테이를 매개로 차체에 체결하기 위해 빔부의 좌우 양측에 각각 폐단면으로 2개씩 형성된 타워부(103)를 갖춘 구조로 되어 있다.FIG. 1 shows a bumper beam injection-molded by the above-described conventional plastic material, that is, the bumper beam is formed to be curved while being elongated along the width direction of the vehicle body, and a beam portion 101, a plurality of ribs 102 integrally formed in the channel of the beam portion and formed in a lattice pattern to compensate the rigidity of the beam portion, and a plurality of ribs 102 formed integrally on both sides of the beam portion for fastening the beam portion to the vehicle body via a stay And two tower portions 103 each having two closed end faces.

상기한 종래의 사출 범퍼빔이 차체에 장착된 상태에서 충격이 가해질 때에는 도 2에 도시된 바와 같이 빔부의 중앙부위가 휘어지면서 충격을 흡수해주게 되는데, 이 경우에 충격이 심할 때에는 빔부가 과도하게 휘어지면서 빔부의 중앙부위에 크랙이 발생되게 된다.When the impact is applied in a state where the above-mentioned conventional injection bumper beam is mounted on the vehicle body, as shown in FIG. 2, the central portion of the beam is bent to absorb the impact. In this case, when the impact is severe, A crack is generated in the central portion of the beam portion.

상기와 같은 크랙을 방지하기 위해 빔부나 리브의 두께를 크게 할 수도 있지만, 그 치수도 다른 상황을 고려할 때에 어느정도까지만 한정되어 있으므로, 사출 범퍼빔으로는 충격강성이 미흡하다고 하는 결점이 있었다.In order to prevent such cracks, the thickness of the beam portion or the rib can be increased. However, since the dimensions of the beam portion and the rib are limited only to some extent in consideration of different situations, there is a drawback that the impact bumper beam has insufficient impact rigidity.

이러한 결점을 해소하고, 또 제작이 용이한 블로워 공법의 범퍼빔도 제안되어 있는 바, 이 범퍼빔은 도 3에 도시된 바와 같이 차체의 폭방향을 따라 만곡되게 연장되면서 상하로 각각 2개의 폐단면을 빔부(201)로 이루어지고, 이 빔부(201)의 폭방향을 따른 중앙부위에는 ㄷ자형상의 요홈(202)이 길이방향을 따라 연장되게 형성되어 있다.As shown in FIG. 3, the bumper beam is curved so as to extend along the width direction of the vehicle body, and has two closed ends And a U-shaped groove 202 is formed on the center portion along the width direction of the beam portion 201 so as to extend along the longitudinal direction.

상기한 종래의 블로워 범퍼빔에 충격이 가해질 때에 그 변형상태는 도 4에 단면으로 도시되어 있는 바, 즉 상기 중앙의 요홈으로 인해 빔부가 상하로 벌어지면서 폐단면부의 변형으로 충격을 적절히 흡수해주게 되어 있지만, 이 빔부의 상하 변형으로 인해 충돌차량이 차체 안쪽으로 밀려들어오면서 차체나 기타 다른 부위에 지나친 손상을 입힌다고 하는 결점이 있었다.When the impact is applied to the conventional blower bumper beam, the deformation state of the bumper beam is shown in Fig. 4. That is, due to the central groove, the beam portion spreads upward and downward to appropriately absorb the impact due to deformation of the closed end face portion However, there is a drawback that the collision vehicle is pushed into the inside of the vehicle body due to the vertical deformation of the beam portion, which causes excessive damage to the vehicle body and other parts.

이에 본 발명은 상기한 제반 결점을 해소하기 위해 안출된 것으로, 블로워 공법으로 플라스틱 재질로 용이하게 제작할 수 있고, 또 자동차의 주행중에 충돌이나 추돌사고시에 충격을 적절히 흡수할 수 있을 뿐만 아니라 충격저항강성도 뛰어나서 탑승자 등을 보다 안전하게 보호할 수 있도록 된 자동차의 범퍼빔구조를 제공함에 그 목적이 있다.Accordingly, it is an object of the present invention to solve the above-described drawbacks, and it is an object of the present invention to provide a shock absorber which can be easily manufactured from a plastic material by a blower method, And a bumper beam structure of a vehicle which is excellent in safety for protecting the occupant and the like.

도 1은 종래 기술에 따른 사출 범퍼빔의 사시도,1 is a perspective view of an injection bumper beam according to the prior art,

도 2는 종래 기술에 따른 사출 범퍼빔에 충격이 가해질 때에 변형상태를 나타내는 평면도,2 is a plan view showing a state of deformation when an impact is applied to an injection bumper beam according to the prior art,

도 3은 종래 기술에 따른 블로워 범퍼빔의 사시도,3 is a perspective view of a prior art blower bumper beam,

도 4는 종래 기술에 따른 블로워 범퍼빔에 충격이 가해질 때에 변형상태를 나타내는 단면도,4 is a cross-sectional view showing a deformed state when an impact is applied to a blower bumper beam according to the prior art,

도 5는 본 발명에 따른 블로워 범퍼빔의 사시도이다.5 is a perspective view of a blower bumper beam according to the present invention.

*도면의 주요 부분에 대한 부호의 설명*Description of the Related Art [0002]

1:빔부2:로브1: beam part 2: robe

3:횡리브4:종리브3: transverse rib 4:

상기한 바의 목적을 달성하기 위한 본 발명은, 차체의 폭방향을 따라 만곡되게 연장되어 범퍼스테이를 매개로 차체에 체결되는 빔부와, 이 빔부의 상부와 하부에 각각 형성되면서 빔부의 길이방향을 따라 연장된 4각의 로브 및, 이 상하의 로브 사이에는 하나의 횡리브와 다수개의 종리브가 격자무늬형상으로 일체로 형성된 것을 특징으로 한다.According to an aspect of the present invention, there is provided a bumper stay comprising: a beam portion extending in a curved shape along a width direction of a vehicle body and fastened to a vehicle body via a bumper stay; And a plurality of transverse ribs and a plurality of vertical ribs are integrally formed in a lattice pattern between the upper and lower lobes.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 5는 본 발명에 따른 블로워 범퍼빔의 사시도인 바, 즉 차체의 폭방향을 따라 만곡되게 연장된 빔부(1)를 갖추고, 이 빔부(1)의 상부와 하부에는 빔부의 길이방향을 따라 연장된 4각의 로브(2:robe)가 각각 형성되며, 이 상하의 로브 사이에는 하나의 횡리브(3)와 다수개의 종리브(4)가 격자무늬형상으로 일체로 형성된 구조로 되어 있다.FIG. 5 is a perspective view of a blower bumper beam according to the present invention, that is, it has a beam portion 1 that is curvedly extended along the width direction of the vehicle body. In the upper and lower portions of the beam portion 1, And two lateral ribs 3 and a plurality of vertical ribs 4 are integrally formed in a lattice pattern between the upper and lower lobes.

상기와 같은 빔부는 플라스틱 재질로 블로워 공법으로 제작되는데, 플라스틱 재질을 사용함에 따라 빔부의 중량이 가볍게 되므로, 차량의 중량을 줄일 수 있게 되고, 또 블로워 공법을 사용함으로써 제작도 용이하게 되는 것이다.The beam portion is made of a plastic material by a blowing method. By using a plastic material, the weight of the beam portion is lightened, so that the weight of the vehicle can be reduced, and the manufacturing can be facilitated by using the blower method.

그리고 빔부의 구조적인 강성을 보완하기 위해 격자무늬형상의 보강리브가 일체로 형성되어 있기 때문에 충돌시에 충격저항강성이 우수하게 되고, 또 충돌시에 전체적으로 적절히 변형되면서 충격을 흡수하여 탑승자 등을 보다 안전하게 보호할 수 있게 된다.In order to compensate for the structural rigidity of the beam portion, since the reinforcing ribs of the grid pattern are integrally formed, the impact resistance rigidity at the time of collision is excellent. Moreover, when the collision is performed, It becomes possible to protect it.

이상 설명한 바와 같이 본 발명에 따른 자동차의 범퍼빔구조에 의하면, 플라스틱 재질로 블로워 공법을 사용해서 제작할 수 있으므로, 중량이 가볍고 제작하기가 용이할 뿐만 아니라 충돌시에 전체적으로 적절히 변형되면서 충격을 효과적으로 흡수하면서 충격저항강성도 우수하여 탑승자 등을 보다 안전하게 보호할 수 있는 효과가 있다.As described above, according to the bumper beam structure of the automobile according to the present invention, since the bumper beam structure of the automobile can be manufactured using the blowing method using plastic material, it is light in weight and easy to manufacture, The impact resistance stiffness is also excellent, so that it is possible to more safely protect the occupant and the like.

Claims (1)

차체의 폭방향을 따라 만곡되게 연장되어 범퍼스테이를 매개로 차체에 체결되는 빔부와, 이 빔부의 상부와 하부에 각각 형성되면서 빔부의 길이방향을 따라 연장된 4각의 로브를 갖춘 자동차의 범퍼빔에 있어서,A bumper beam of an automobile having a beam portion extending in a curved shape along the width direction of the vehicle body and fastened to the vehicle body via a bumper stay and a four-angle lobe extending in the longitudinal direction of the beam portion, In this case, 상기 상하의 로브 사이에는 하나의 횡리브와 다수개의 종리브가 격자무늬형상으로 일체로 형성된 것을 특징으로 하는 자동차의 범퍼빔구조.Wherein one lateral rib and a plurality of vertical ribs are integrally formed in a lattice pattern between the upper and lower lobes.
KR1019960054275A 1996-11-15 1996-11-15 Structure of bumper beam of a car KR100243584B1 (en)

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KR19980035830A KR19980035830A (en) 1998-08-05
KR100243584B1 true KR100243584B1 (en) 2000-03-02

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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