KR100258815B1 - Impact absorbing structure - Google Patents

Impact absorbing structure Download PDF

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Publication number
KR100258815B1
KR100258815B1 KR1019960080430A KR19960080430A KR100258815B1 KR 100258815 B1 KR100258815 B1 KR 100258815B1 KR 1019960080430 A KR1019960080430 A KR 1019960080430A KR 19960080430 A KR19960080430 A KR 19960080430A KR 100258815 B1 KR100258815 B1 KR 100258815B1
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KR
South Korea
Prior art keywords
bumper
steel
reinforcing members
energy absorber
stays
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Application number
KR1019960080430A
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Korean (ko)
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KR19980061062A (en
Inventor
윤병규
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정몽규
현대자동차주식회사
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Priority to KR1019960080430A priority Critical patent/KR100258815B1/en
Publication of KR19980061062A publication Critical patent/KR19980061062A/en
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Publication of KR100258815B1 publication Critical patent/KR100258815B1/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
    • B60R19/18—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
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection

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

Abstract

PURPOSE: Shock absorbing structure of a bumper is provided to reduce impact transmitted from a bumper stay to a side member, and to prevent a vehicle body from being deformed by absorbing the shock finally with a reinforcement member at a collision. CONSTITUTION: A bumper assembly is composed of an energy absorber(22) assembled with a bumper cover(21); a steel bumper beam(23) combined with the energy absorber; and bumper stays(24a,24b) fixed in both sides of the steel bumper beam. Incision units are formed in both sides of the steel bumper beam, and reinforcing members(25a,25b) having hexagonal sections are inserted to incision units of the steel bumper beam. The reinforcing members are exposed out of the incision units, and fixed in the bumper stays. The bumper stay is fixed in the end of a side member placed in the lower part of an engine room. The impact is absorbed by the energy absorber, and is dispersed in the steel bumper beam to concentrate on the reinforcing members in applying the shock of 5MPH to the bumper cover. The weak impact is transmitted to the bumper stays and the side member by absorbing the shock with crushing the reinforcing members.

Description

범퍼의 충격흡수구조Shock absorber structure of bumper

본 발명은 자동차 범퍼의 충격흡수구조에 관한 것이다.The present invention relates to a shock absorbing structure of an automobile bumper.

종래의 자동차 범퍼는 도 1에서 보는 바와 같이 그 조립체가 범퍼 커버(1)의 내측에 에너지 업소버(2)가 조립되고, 에너지 업소버(2)의 내측에는 다시 스틸 범퍼 빔(3)이 조립되며, 이 스틸 범퍼 빔(3) 내측의 양쪽에는 차량의 엔진 룸 하부 양측에 위치하는 사이드 멤버(4a,4b)에 고정되는 범퍼 스테이(5a,5b)에 조립되도록 한 것이다.In the conventional automobile bumper, as shown in FIG. 1, the energy absorber 2 is assembled inside the bumper cover 1, and the steel bumper beam 3 is assembled inside the energy absorber 2 again. Both inside the steel bumper beams 3 are assembled to the bumper stays 5a and 5b fixed to the side members 4a and 4b located on both sides of the lower part of the engine room of the vehicle.

또, 상기한 스틸 범퍼 빔(3)과 범퍼 스테이(5a,5b)의 관계를 보면, 도 2와 같이 범퍼 스테이(5a,5b)와 접하는 스틸 범퍼 빔(3)의 내면에 컵형의 보강부재(6)를 추가하고 있어서, 이 보강부재(6)가 충돌시 범퍼 커버(1)로 부터 전달되는 충격 에너지를 감쇄시키면서 범퍼 스테이(5a,5b) 쪽으로 전달되지 않도록 하는 역할을 수행하게 된다.In addition, when the relationship between the steel bumper beam 3 and the bumper stays 5a and 5b is described, a cup-shaped reinforcing member is formed on the inner surface of the steel bumper beam 3 in contact with the bumper stays 5a and 5b as shown in FIG. 6), the reinforcing member 6 serves to prevent the reinforcing member 6 from being transmitted to the bumper stays 5a and 5b while attenuating the impact energy transmitted from the bumper cover 1 in the event of a collision.

그러나, 상기와 같은 종래의 범퍼 조립체에서는 범퍼에 작용하는 충격에너지가 차체에 전달되지 않도록 그 충격하중을 흡수하는 보강부재의 역할이 5MPH(시간당 마일수)용의 범퍼에서는 그 성능이 미흡하여 5MPH 범퍼의 법규를 만족시키지 못하고 있다. 5MPH 범퍼에 관한 법규(FMVSS Part 581, CMVSS No. 215 등)는 5MPH로 범퍼에 충격하중을 가했을 때 차체에 영향을 주지 않고 범퍼 자체에서 그 충격 에너지를 흡수하도록 정하고 있는 것이다.However, in the conventional bumper assembly as described above, the role of the reinforcing member that absorbs the impact load so that the impact energy acting on the bumper is not transmitted to the vehicle body is insufficient in the 5MPH (miles per hour) bumper, so the performance of the 5MPH bumper Does not meet the law. The 5 MPH bumper legislation (FMVSS Part 581, CMVSS No. 215, etc.) stipulates that when the impact load is applied to the bumper at 5 MPH, the impact energy is absorbed by the bumper itself without affecting the body.

본 발명의 목적은 5MPH 범퍼의 법규를 스테이 쪽에서 만족시킬 수 있는 범퍼의 충격흡수구조를 제공하는데 있는 것이다.An object of the present invention is to provide a shock absorbing structure of a bumper that can satisfy the regulations of the 5MPH bumper on the stay side.

제1도는 종래의 범퍼 조립체가 사이드 멤버에 설치된 상태의 횡단면도.1 is a cross-sectional view of a conventional bumper assembly installed on the side member.

제2도는 제1도의 A-A선 단면도.2 is a cross-sectional view taken along the line A-A of FIG.

제3도는 본 발명의 범퍼 조립체 횡단면도.3 is a cross-sectional view of the bumper assembly of the present invention.

제4도는 제3도의 Z부분 확대도.4 is an enlarged view of portion Z of FIG.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

21 : 범퍼 커버 22 : 에너지 업소버21: bumper cover 22: energy absorber

23 : 스틸 범퍼 빔 24a, 24b : 범퍼 스테이23: steel bumper beam 24a, 24b: bumper stay

25a, 25b : 보강부재 26 : 패드25a, 25b: reinforcing member 26: pad

상기목적을 달성하기 위한 본 발명의 구성을 첨부된 도면에 의하여 설명하면 다음과 같다.Referring to the accompanying drawings, the configuration of the present invention for achieving the above object is as follows.

본 발명은 범퍼 커버(21)과 이 범퍼 커버(21)의 내측에 조립되는 에너지 업소버(22)와, 이 에너지 업소버(22)의 내측에 조립되는 스틸 범퍼 빔(23), 그리고 이 스틸 범퍼 빔(23)의 양쪽에 각각 고정되는 범퍼 스테이(24a,24b)로 이루어진 범퍼 조립체에 있어서, 스틸 범퍼 빔(23)의 좌우 양측에 절개부를 형성하고, 이 스틸 범퍼 빔(23)의 절개부 내측에 각각 육각형 단면구조를 갖는 보강부재(25a,25b)를 삽입 설치하되, 상기 절개부 외측으로 노출되도록 설치된 상기 보강부재(25a)(25b)의 면을 상기 범퍼 스테이(24a,24b)에 고정시킨 것이다.The present invention provides a bumper cover 21, an energy absorber 22 assembled inside the bumper cover 21, a steel bumper beam 23 assembled inside the energy absorber 22, and the steel bumper beam. In the bumper assembly consisting of bumper stays 24a and 24b fixed to both sides of 23, cutouts are formed on both left and right sides of the steel bumper beams 23, and inside the cutouts of the steel bumper beams 23, respectively. Reinforcing members (25a, 25b) having a hexagonal cross-sectional structure respectively inserted and installed, the surface of the reinforcing members (25a, 25b) installed to be exposed to the outside of the cutout is fixed to the bumper stay (24a, 24b) .

즉, 보강부재(25a,25b)는, 2 피스의 스프링판 양단부를 절곡한 상태에서 그 양측을 용접시켜 육각형 단면의 구성을 갖도록 제작된 것으로서, 상기 보강부재(25a,25b)의 전면쪽은 스틸 범퍼 빔(23)의 내면에 패드(26)를 개재시킨 상태에서 볼트(27)와 너트(28)의 체결에 의하여 고정된다.That is, the reinforcing members 25a and 25b are manufactured to have a hexagonal cross-section by welding both sides in a state where both ends of the spring plate are bent, and the front side of the reinforcing members 25a and 25b is made of steel. It is fixed by the fastening of the bolt 27 and the nut 28 in the state which interposed the pad 26 on the inner surface of the bumper beam 23.

이러한 보강부재(25a,25b)가 용접되는 스틸 범퍼 빔(23)의 후면 부위에는 각각 사각 구멍의 절개부가 형성되는데, 상기 보강부재(25a)(25b)의 후면은 각 절개부 외측으로 노출된 상태에서 범퍼 스테이(24a)(24b)에 각각 고정 결합되며, 그 이웃한 양측면은 상기 절개부의 테두리를 이루는 스틸 범퍼 빔(23) 부위에 각각 용접 결합된다.The rear portions of the steel bumper beams 23 to which the reinforcing members 25a and 25b are welded are formed with cutouts of square holes, respectively, and the rear surfaces of the reinforcing members 25a and 25b are exposed to the outside of the cutouts. Are fixed to the bumper stays 24a and 24b, respectively, and both adjacent side surfaces thereof are respectively welded to portions of the steel bumper beams 23 forming the edges of the cutouts.

본 발명은 상기와 같은 구성에 따라, 범퍼 스테이(24a,24b)를 차량의 엔진 룸 하부 양측에 위치하는 사이드 멤버의 선단에 고정시킨 후 5MPH의 충격으로 범퍼 커버(21)에 충격하중을 가하면 1차적으로는 에너지 업소버(22)에서 흡수되고, 나머지 에너지는 스틸 범퍼 빔(23)에 분산되면서 보강부재(25a,25b) 쪽에 집중된다.According to the above configuration, the bumper stays 24a and 24b are fixed to the tip of side members located at both sides of the lower part of the engine room of the vehicle, and then the impact load is applied to the bumper cover 21 with an impact of 5 MPH. The energy is absorbed by the energy absorber 22 and the remaining energy is distributed to the reinforcing members 25a and 25b while being distributed to the steel bumper beam 23.

이때, 상기 보강부재(25a)(25b)가 찌그러지기 쉬운 육각형 단면구조로 구성되어 있으므로, 보강부재(25a,25b)에 가해지는 충격에너지는, 그 대부분이 보강부재(25a,25b)의 찌그러짐에 의해 흡수되는 2차적인 충격력 흡수가 일어나게 되며, 이에 따라 범퍼 스테이(24a,24b)와 사이드 멤버로는 매우 약화된 충격력만이 전달 되게 되는 것이다.At this time, since the reinforcing members 25a and 25b have a hexagonal cross-sectional structure that is easily crushed, most of the impact energy applied to the reinforcing members 25a and 25b is due to crushing of the reinforcing members 25a and 25b. Secondary impact force absorption is absorbed by the bumper stays 24a, 24b and the side members are thus transmitted only a very weak impact force.

이와 같은 본 발명은 5MPH의 충돌시 보강부재에서 최종적으로 충격에너지를 흡수하기 때문에 범퍼 스테이와 사이드 멤버에 전달되는 충격력을 약화시켜 차체의 변형을 방지하게 되는 효과가 있는 것이다.The present invention has the effect of preventing the deformation of the vehicle body by weakening the impact force transmitted to the bumper stay and the side member since the impact energy is finally absorbed by the reinforcing member during the collision of 5MPH.

Claims (1)

범퍼 커버와 이 범퍼 커버의 내측에 조립되는 에너지 업소버와, 이 에너지 업소버의 내측에 조립되는 스틸 범퍼 빔, 그리고 이 스틸 범퍼 빔의 양쪽에 각각 고정되는 범퍼 스테이로 이루어진 범퍼 조립체에 있어서: 상기 스틸 범퍼 빔(23)의 좌우 양측에 절개부를 형성하고, 상기 스틸 범퍼 빔(23)의 절개부 내측에 각각 육각형 단면구조를 갖는 보강부재(25a)(25b)를 삽입 설치하되, 각 보강부재(25a)(25b)의 일측면은 상기 절개부 외측으로 돌출되어 상기 범퍼 스테이(24a)(24b)에 고정 결합되고 그 이웃한 양측면이 상기 절개부에 인접한 스틸 범퍼 빔(23)에 각각 용접 결합되며, 각 보강부재(25a)(25b)의 스테이(24a)(24b) 반대측면은 상기 스틸 범퍼 빔(23)의 내측면에 고정 결합되는 것을 특징으로 하는 범퍼의 충격흡수구조.A bumper assembly comprising a bumper cover, an energy absorber assembled inside the bumper cover, a steel bumper beam assembled inside the energy absorber, and a bumper stay fixed to both sides of the steel bumper beam, the bumper assembly comprising: the steel bumper Cutouts are formed on both left and right sides of the beams 23, and reinforcement members 25a and 25b having hexagonal cross-sectional structures are inserted into the cutouts of the steel bumper beams 23, respectively. One side of 25b protrudes outwardly from the cutout to be fixedly coupled to the bumper stays 24a and 24b, and both adjacent sides are welded to the steel bumper beams 23 adjacent to the cutout, respectively. The shock absorbing structure of the bumper, characterized in that the opposite side of the stay (24a) (24b) of the reinforcing member (25a) (25b) is fixedly coupled to the inner surface of the steel bumper beam (23).
KR1019960080430A 1996-12-31 1996-12-31 Impact absorbing structure KR100258815B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960080430A KR100258815B1 (en) 1996-12-31 1996-12-31 Impact absorbing structure

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Application Number Priority Date Filing Date Title
KR1019960080430A KR100258815B1 (en) 1996-12-31 1996-12-31 Impact absorbing structure

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KR19980061062A KR19980061062A (en) 1998-10-07
KR100258815B1 true KR100258815B1 (en) 2000-08-01

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