KR950004438B1 - Back bar for impact absorbing - Google Patents

Back bar for impact absorbing Download PDF

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Publication number
KR950004438B1
KR950004438B1 KR1019930018990A KR930018990A KR950004438B1 KR 950004438 B1 KR950004438 B1 KR 950004438B1 KR 1019930018990 A KR1019930018990 A KR 1019930018990A KR 930018990 A KR930018990 A KR 930018990A KR 950004438 B1 KR950004438 B1 KR 950004438B1
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KR
South Korea
Prior art keywords
plate
back bar
side plate
impact beam
collision
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Application number
KR1019930018990A
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Korean (ko)
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KR950008240A (en
Inventor
이창건
Original Assignee
대우자동차주식회사
김태구
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Priority to KR1019930018990A priority Critical patent/KR950004438B1/en
Publication of KR950008240A publication Critical patent/KR950008240A/en
Application granted granted Critical
Publication of KR950004438B1 publication Critical patent/KR950004438B1/en

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Classifications

    • 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
    • B60R19/04Bumpers, 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

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

Abstract

The back bar mounted between the bumper impact beam and the long front, absorbs the shock in front-directional collision of the vehicle. The back bar comprises the front side plate (10), the rear side plate (20), upper side plate (30) and the lower side plate (40) having a side plate (42), the plate (40) being is directly connected with the respective plates (10)(20)(30). The back bar absorbs the collision energy transmitted from the impact beam to the vehicle body and dampens the shock.

Description

자동차의 충격완화용 백바Shock-absorbing back bar of car

제1도는 종래의 백바 분해사시도.1 is an exploded perspective view of a conventional back bar.

제2도는 본 발명의 백바 분해사시도.Figure 2 is an exploded perspective view of the back bar of the present invention.

제3도는 본 발명의 백바가 차체에 조립되는 상태의 사시도.3 is a perspective view of a state in which the back bar of the present invention is assembled to a vehicle body.

제4도는 종래의 백바와 본 발명의 백바를 비교한 충격흡수실험 그래프.4 is a graph of a shock absorption test comparing the back bar of the present invention and the conventional back bar.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 전면판 20 : 후면판10: front panel 20: rear panel

30 : 상판 40 : 하판30: top plate 40: bottom plate

42 : 측면부42: side part

본 발명은 자동차에서 범퍼 임펙트빔(bumper impact beam)과 롱 프론트(long front)사이에 설치되어 충격흡수 기능을 하는 백바에 관한 것이다.The present invention relates to a back bar installed between a bumper impact beam and a long front in an automobile, and having a shock absorbing function.

백바는 차량의 전방충돌시 범퍼 임펙트 빔에서 차체에 전달될때 전달되는 충돌 에너지를 흡수하여 충격을 완화시키는 것이다. 이 백바는 임펙트 빔의 양쪽에 일정형상을 갖는 구조로서 백바의 강도가 충돌에너지 흡수에서 중요한 요소이다.The back bar absorbs the collision energy transmitted from the bumper impact beam to the vehicle body in front of the vehicle to alleviate the impact. This back bar has a certain shape on both sides of the impact beam, and the strength of the back bar is an important factor in the collision energy absorption.

종래의 이러한 백바는, 제1도에 도시한 바와같이, 전면판(1)과 후면판(2) 그리고 상판(3)으로 구성된다. 전면판(1)은 제3도에 도시된 범퍼 임펙트 빔(50)의 후면에 고정되는 부분이다 . 그러므로 이 부분은 범퍼임펙트 빔의 후면에 부합되는 형상으로 굴곡형성한다.This conventional back bar is composed of a front plate 1, a back plate 2 and an upper plate 3, as shown in FIG. The front plate 1 is a part fixed to the rear side of the bumper impact beam 50 shown in FIG. Therefore, this portion is bent into a shape corresponding to the rear side of the bumper impact beam.

후면판(2)은 대략 ㄷ자로 절곡된 형상이며 그 양단이 전면판(1)에 고정된다. 그리고 이 후면판(2)은 도시하지 않은 차체의 프론트 프레임에 고정되는 부분이다.The back plate 2 is shaped like a letter B and both ends thereof are fixed to the front plate 1. And this back plate 2 is a part fixed to the front frame of the vehicle body which is not shown in figure.

상판(3)은 전면판(1)과 후면판(2)이 고정된 상단부에 결합하는 것으로서, 고정된 전면판(1)과 후면판(2)사이에 생기는 공간부, 즉 전면판(1)과 후면판(2)의 상부를 덮는다. 그리하여 이 백바는 일측이 개구된 입방체 모양을 갖는다.The upper plate 3 is coupled to the upper end of the front plate (1) and the back plate (2), the space between the fixed front plate (1) and the back plate (2), that is, the front plate (1) And the top of the back plate (2). Thus, this back bar has a cube shape with one side open.

이러한 전면판(1)과 후면판(2)과 상판(3)은 그 접촉면에 용접을 행하여 결합한다.The front plate 1, the back plate 2, and the top plate 3 are joined to the contact surface by welding.

결합된 백바는 범퍼 임팩트 빔 양측에 각각 고정되며 차체의 프론트 프레임에 연결하여 차량충돌시 충돌에너지를 흡수하는 기능을 한다. 그러나 종래의 백바는 충돌시 본래형상이 쉽게 변형되어 충돌 에너지를 충분히 흡수하는 데에는 미흡한점이 있었다.The combined backbars are fixed to both sides of the bumper impact beam and are connected to the front frame of the vehicle to absorb collision energy in the event of a vehicle crash. However, the conventional back bar has a weak point in absorbing the collision energy sufficiently since the original shape is easily deformed during the collision.

본 발명의 목적은 종래의 백바보다 충돌에너지 흡수의 측면에서 더 보강된 구조로 개선하는데 있다. 이에따라 본 발명에시는 통상의 전면판, 후면판, 상판으로 구성되는 자동차의 충격완화용 백바에 있어서, 전면판과 후면판과 상판과 직접연결되며 측면부를 가지는 하판을 더 구비한다.An object of the present invention is to improve the structure to be more reinforced in terms of absorption of collision energy than the conventional back bar. Accordingly, the present invention further includes a front plate, a rear plate, and a back plate for shock-absorbing vehicle, which is composed of a top plate, further comprising a lower plate directly connected to the front plate and the rear plate and the upper plate and having a side portion.

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

제2도에 도시한 바와같이, 본 발명은 통상의 것과 마찬가지로 전면판(10)과 후면판(20)과 상판(30)을 갖는다. 그리고 하판(40)을 더 구비한다.As shown in FIG. 2, the present invention has a front plate 10, a back plate 20, and a top plate 30 as in the conventional manner. And the lower plate 40 is further provided.

이 하판(40)은 상술한 진면판(10)과 후면판(20)과 상판(30)과 직접 연결되도록 그 양단에서 연장되는 측면부(42)를 형성한다. 이에따라, 백바의 중앙에서 볼때 이 하판(40)은 하측방향과 양측면방향 폐쇄시키는 구조가 된다. 미설명 부호 31 및 41은 용접플랜지로서, 인접판과 용접하기 위해 상판(30) 및 하판(40)의 가장자리를 절곡형성한 것이다.The lower plate 40 forms side surfaces 42 extending from both ends thereof so as to be directly connected to the above-mentioned true plate 10, the rear plate 20, and the upper plate 30. Accordingly, when viewed from the center of the back bar, the lower plate 40 has a structure of closing in the lower direction and in both side directions. Reference numerals 31 and 41, which are not shown, are bent edges of the upper plate 30 and the lower plate 40 for welding with the adjacent plate.

이러한 구성의 각 판들을 결합할때는 용접플랜지(31)(41) 및 이와 접촉되는 부분을 용접하면된다. 그리고 제3도에 도시한 바와같이 전면판(10)은 범퍼 임팩트 빔(50)이 양측에 결합 고정되고, 후면판(20)은 도시하지 않은 차체(60)의 프론트 프레임(61)에 결합고정된다. 미설명부호 40은 범퍼이다. 이와같이 조립된 본 발명의 백바는 전방충돌시 수평상태로 위치되어 있는 상판(30)과 더블어 보완된 하판(40)이 충돌에너지 흡수의 유효한 역할을 담당한다.When joining the plates of such a configuration, the welding flange 31, 41 and the portion that is in contact with the welding. As shown in FIG. 3, the front plate 10 is fixedly coupled to both sides of the bumper impact beam 50, and the rear plate 20 is coupled to the front frame 61 of the vehicle body 60 (not shown). do. Reference numeral 40 is a bumper. The back bar of the present invention assembled as described above plays an effective role of absorbing collision energy between the upper plate 30 and the double plate complemented by the upper plate 30 positioned in a horizontal state during the front collision.

제4도에 도시된 그래프는 종래의 백바와 본 발명에 따른 백바의 충돌시 횹수에너지를 나타낸 것이다.The graph shown in FIG. 4 shows the variable energy in the collision of the conventional back bar and the back bar according to the present invention.

이것은 백바를 범퍼 임팩트 빔(50)과 차체(60)에 조립된 상태에서 충돌해석 프로그램인 팸 크레쉬(Pam-CRASH)로 컴퓨터 시뮬레이션(Computer Simu Lation)에 의한 실험 결과이다. 이때의 실험조건은 초기속도를 30mph로서 수식벽면에 충돌했을때이다.This is an experiment result by computer simulation with Pam-CRASH, a crash analysis program, with the backbar assembled to the bumper impact beam 50 and the vehicle body 60. The experimental condition at this time is when the initial velocity is 30 mph and it hits the modified wall.

도시한 그래프에서 상측에 있는 곡선은 본 모델에 의한 결과이고, 하측에 있는 곡선은 종래 모델에 의한 결과이다.The upper curve in the graph shown is the result of the present model, and the lower curve is the result of the conventional model.

이 그래프에 나타난 바와같이 충돌흡수 에너지가 시각 2.00E+01ms(20ms)에서 종래모델은 12.78KJ로 나타났고, 본 모델은 19.12KJ로 나타났다. 이 결과에서 알 수 있듯이 에너지 흡수율 정도가 49.6%로 증가했다.As shown in this graph, the collision absorption energy was 12.78KJ at the time 2.00E + 01ms (20ms), and this model was 19.12KJ. As can be seen from this result, the degree of energy absorption increased to 49.6%.

이상에서 설명한 바와같이 본 발명은 향상된 충돌 에너지 흡수 특성을 가지며, 차량의 전방충돌시 충격으로 인한 피해를 줄일 수 있는 유용한 발명이다.As described above, the present invention has an improved collision energy absorption characteristic and is a useful invention that can reduce the damage caused by the impact in the front collision of the vehicle.

Claims (1)

통상의 전면판과 후면판과 상판으로 구성되는 자동차의 충격 완화용 백바에 있어서, 상기 전면판(10), 후면판(20), 그리고 상판(30)과 직접연결되며 측면부(42)를 가지는 하판(40)을 더 구비한 것을 특징으로 하는 자동차의 충격 완화용 백바.In the shock absorbing back bar of the vehicle consisting of a normal front plate and a back plate and the top plate, the front plate 10, the back plate 20, and the bottom plate having a side portion 42 is directly connected to the top plate 30 Shock absorbing back bar of the vehicle, characterized in that it further comprises (40).
KR1019930018990A 1993-09-20 1993-09-20 Back bar for impact absorbing KR950004438B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930018990A KR950004438B1 (en) 1993-09-20 1993-09-20 Back bar for impact absorbing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930018990A KR950004438B1 (en) 1993-09-20 1993-09-20 Back bar for impact absorbing

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KR950008240A KR950008240A (en) 1995-04-17
KR950004438B1 true KR950004438B1 (en) 1995-05-01

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