KR0165191B1 - Door impact beam - Google Patents

Door impact beam Download PDF

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Publication number
KR0165191B1
KR0165191B1 KR1019950047695A KR19950047695A KR0165191B1 KR 0165191 B1 KR0165191 B1 KR 0165191B1 KR 1019950047695 A KR1019950047695 A KR 1019950047695A KR 19950047695 A KR19950047695 A KR 19950047695A KR 0165191 B1 KR0165191 B1 KR 0165191B1
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KR
South Korea
Prior art keywords
impact
door
impact beam
present
rigid
Prior art date
Application number
KR1019950047695A
Other languages
Korean (ko)
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KR970035095A (en
Inventor
이봉추
Original Assignee
전성원
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1019950047695A priority Critical patent/KR0165191B1/en
Publication of KR970035095A publication Critical patent/KR970035095A/en
Application granted granted Critical
Publication of KR0165191B1 publication Critical patent/KR0165191B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
    • B60J5/0438—Elongated type elements, e.g. beams, cables, belts or wires characterised by the type of elongated elements
    • B60J5/0443—Beams
    • B60J5/0444—Beams characterised by a special cross section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0455—Reinforcement elements integrated in door structure or other door elements, e.g. beam-like shapes stamped in inner door panel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/0412—Lower door structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
    • B60J5/0423—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure
    • B60J5/0425—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure the elements being arranged essentially horizontal in the centre of the lower door structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/042—Reinforcement elements
    • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
    • B60J5/0437—Elongated type elements, e.g. beams, cables, belts or wires characterised by the attachment means to the door, e.g. releasable attachment means

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

Abstract

본 발명은 승용차도어 하부에 가로질러 내장되어 측면충돌에 대한 충격에너지를 흡수하는 도어 임팩트 빔에 관한 것이다.The present invention relates to a door impact beam that is embedded across the lower door of a passenger car and absorbs impact energy against side impacts.

본 발명은 중량과 코스트를 낮추면서도 소요강도를 충족시킬 수 있는 형상을 취하기 위하여, 길이방향의 여러구간에 측면충돌에 대한 충격하중의 작용방향으로 신장된 땅콩모양의 단면을 갖고 외형이 딤플형상을 이루는 강성보완부(2)를 등간격 배치한 것이다.The present invention has a dimple shape with a peanut-shaped cross section extending in the direction of the impact load on the side impact at various sections in the longitudinal direction in order to take a shape capable of satisfying the required strength while reducing the weight and cost. The stiffness supplementary part 2 which comprises is arrange | positioned at equal intervals.

Description

도어 임팩트 빔Door impact beam

제1도는 본 발명의실시예의 임팩트 빔이 설치된 도어 정면도.1 is a front view of the door is installed impact beam of the embodiment of the present invention.

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

제3도는 제2도의 B-B 선 단면도.3 is a cross-sectional view taken along the line B-B in FIG.

제4도는 제2도의 C-C 선 단면도.4 is a cross-sectional view taken along the line C-C of FIG.

제5도는 종래의 임팩트 빔이 설치된 도어 정면도.5 is a front view of a door in which a conventional impact beam is installed.

제6도는 제5도의 D-D 선 단면도.6 is a cross-sectional view taken along the line D-D of FIG.

제7도는 종래의 임팩트 빔에 대한 충격강도 시험시의 꺽임현상을 나타낸 부분절결 단면도.7 is a partial cutaway cross-sectional view showing a bending phenomenon in the impact strength test for a conventional impact beam.

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

1 : 빔 본체 2 : 강성보완부1 beam body 2 rigid complementary part

본 발명은 승용차 도어 하부에 가로질러 내장되어 측면충돌에 대한 충격에너지를 흡수하는 도어 임패트 빔에 관한 것이다.The present invention relates to a door impact beam that is embedded across the lower door of a passenger car and absorbs impact energy against side impacts.

종래에는 직선형의 파이프로 된 빔 본체(21)를 제5도와 같이 양측에 임팩트 빔 브래킷(22,22')으로 용접하고 외면을 제6도와 같이 도어 외측 패널(23) 내면과 접하도록 실러(24)로 실링처리한 것으로, 상기 임팩트 빔 브래킷(22,22')은 도어 내측 패널에 각각 용접된다.Conventionally, the beam body 21 made of a straight pipe is welded on both sides with impact beam brackets 22 and 22 'as shown in FIG. 5, and the sealer 24 is brought into contact with the inner surface of the door outer panel 23 as shown in FIG. The impact beam brackets 22 and 22 'are welded to the door inner panels, respectively.

이러한 종래의빔 본체(21)는 직경31.8, 두께 2.6t 의 고장력 파이프를 통상 사용하게 되는데, 긴 직선형 파이프로 되어 있기 때문에 측면충돌에 대한 충격 하중이 작용하면 집중응력이 작용하는 부위가 제7도와 같이 끊기는 현상이 발생하여 쉽게 꺾어지므로 해서 대차의 실내침입량이 많아지고 이로 인해 승객의 골반부에 가해지는 충격이 심해지는 경향을 띄었던 것이다.The conventional beam body 21 generally uses a high-strength pipe having a diameter of 31.8 and a thickness of 2.6 tons, and since it is a long straight pipe, when the impact load on the side impact is applied, the site where the concentrated stress acts is shown in FIG. As the break occurs, the car breaks easily, thereby increasing the amount of indoor intrusion of the trolley, which in turn tends to exacerbate the impact on the pelvis of the passenger.

종래에는 상기와 같은 문제를 보완하기 위하여 코스트가 높은 인장강도 80 내지 100㎏/㎟의 고장력 파이프를 사용하게 되는게, 이러한 경우 직경과 두께가 커지는 등 중량이 증가하고 코스트가 높아지는 또 다른 문제를 낳고 있었던 것이다.Conventionally, in order to supplement the above problems, high tensile pipes having a high tensile strength of 80 to 100 kg / mm 2 are used to compensate for the above problems. In this case, diameters and thicknesses are increased, resulting in another problem of increased weight and higher cost. will be.

본 발명의 목적은 중량과코스트를 낮추면서도 소요강도를 충족시킬 수 있는 형상의 임팩트 빔을 제공하는데 있는 것이다.An object of the present invention is to provide an impact beam of a shape that can meet the required strength while reducing weight and cost.

본 발명은 상기 목적을 달성하기 위하여, 빔 본체에 측면충돌에 대한 충격하중의 작용방향을 따라 그 상하측을 평면으로 형성하여 타원형의 강성보완부를 형성함과 동시에 상기 강성보완부의 중앙 전주위에 오목부를 형성한 것이다.In order to achieve the above object, the upper and lower sides are formed in a plane along the direction of action of the impact load on the side impact on the beam body to form an elliptical rigid complementary portion, and at the same time a concave portion around the center of the rigid complementary portion. It is formed.

이하 본 발명의 실시예를 도면에 의하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the drawings.

제1도 및 제2도에서는 빔 본체(1)의 길이방향으로 3 개소에 강성보완부(2)를 형성시키고 있다.In FIG. 1 and FIG. 2, the rigid complementary part 2 is formed in three places in the longitudinal direction of the beam main body 1. As shown in FIG.

이 강성보완부(2)는 빔 본체(1)에 측면충돌에 대한 충격하중의 작용방향을 따라 상하측이 평면이 되게 타원형으로 형성하며 그 중앙 전주위에는 오목부(2')를 형성하므로서 제3도에 도시한 바와 같이 측면충돌에 대한 충격하중의 작용방향으로 신장된 땅콩모양의 단면을 하고 있는 것이다.The rigid complementary part 2 is formed in an elliptical shape so that the upper and lower sides become flat along the direction of action of the impact load on the side impact on the beam main body 1, and the concave portion 2 'is formed around the central periphery thereof. As shown in the figure, it has a peanut-shaped cross section extending in the direction of action of the impact load on the side impact.

즉, 상기 강성보완부(2)는 평면 또는 저면에서 보았을 때 중앙이 타원모양으로 움푹들어간 딤플(dimple)형상을 하고 있음을 제2도에서 나타내고 있는 바, 상기 강성보완부(2)는 중심부분을 먼저 장원형의 평면을 형성한 상태에서 중심부분이 움푹들어간 오목부(2')를 형성하여 , 오목부(2')를 통해 충격력이 흡수되게 한 것이다. 즉, 오목부(2')를 기준으로 양측이 볼록하게 형성되어 있어, 충격력이 볼록한 부분에 도달하게 되면 오목부(2')가 수축을 흡수하게 되는 충격완화의 역할을 하는 것이다.That is, the rigid complementary portion 2 shows a dimple shape in which the center is sloping in the shape of an ellipse when viewed from a flat or bottom surface, and the rigid supplemental portion 2 is the central portion. First, to form a concave portion 2 'in which the central portion is recessed in the state where an oblong plane is formed, the impact force is absorbed through the concave portion 2'. That is, both sides of the concave portion 2 'are formed convexly, and when the impact force reaches the convex portion, the concave portion 2' serves as a shock mitigation that absorbs the contraction.

강성보완부(2)의 일면은 제3도와 같이 실러(3)에 의하여 도어 외측 패널(4) 내면에 실링처리 한다.One surface of the rigid complementary part 2 is sealed to the inner surface of the door outer panel 4 by the sealer 3 as shown in FIG.

또 강성보완부(2) 이외의 구간은 제4도와 같이 원형의 단면을 이루고 있다.In addition, sections other than the rigid complementary part 2 have the circular cross section like FIG.

상기와 같은 빔 본체(1)는 열처리 후 그 양단이 임팩트 빔 브래킷(5,5')에 각각 용접되고, 임팩트 빔 브래킷(5,5')은 다시 도어 내측 패털(6) 양측의 단차부에 용접된다.Both ends of the beam main body 1 are welded to the impact beam brackets 5 and 5 ', respectively, after the heat treatment, and the impact beam brackets 5 and 5' are again formed on the stepped portions on both sides of the door inner panel 6. Are welded.

상기 임팩트 빔(1)은 설치상태에서 초기충격치를 1,020㎏f 이상으로 하여 이 초기충격치의 120% 를 만족시키는 측면충돌시험 또는 도어강도시험을 행하였을 때 종래와 비교하여 직경과 두께가 작은 인장강도 80㎏/㎟ 이하의 파이프를 사용하여도 소요강도를 충족시키는 결과를 얻을 수 있는 것이다.The impact beam 1 has a tensile strength of smaller diameter and thickness than the conventional one when a side impact test or door strength test satisfying 120% of the initial impact value with an initial impact value of 1,020 kgf or more in the installed state. Even if a pipe of 80 kg / mm 2 or less is used, the required strength can be obtained.

강성보완부(2)의 단면계수는 단면적과 두께가 동일한 파이프에 대하여 최소 13% 정도 향상된다.The section modulus of the rigid complementary section 2 is improved by at least 13% for a pipe of the same thickness as the cross section.

이와 같은 본 발명은 비교적 저장력의 파이프를 사용할 수 있고 직경과 두께가 작은 파이프를 사용하여도 종래와 같은 고장력의 파이프가 갖는 강성을 유지할 수 있어 코스트와 중량이 절감되는 것이다. 그리고 강성보완부의 중심인 움푹들어간 오목부를 통해 충격력이 흡수되어 그 부분에서의 끊김이 발생하지 않아 대차가 실내로 침입하는 양을 줄이므로서 승객을 보호할 수 있는 것이다.As described above, the present invention can use a pipe having a relatively low storage capacity and can maintain the rigidity of a high-tension pipe as in the related art even when using a pipe having a small diameter and thickness, thereby reducing cost and weight. In addition, the impact force is absorbed through the recessed recess, which is the center of the rigid complementary portion, so that no break occurs in the portion, thereby reducing the amount of intrusion into the room, thereby protecting the passengers.

Claims (1)

빔 본체에 측면충돌에 대한 충격하중의 작용방향을 따라 그 상하측을 평면으로 형성하여 타원형의 강성보완부를 형성함과 동시에 상기 강성보완부의 중앙 전주위에 오목부를 형성한 것을 특징으로 하는 도어 임팩트 빔.A door impact beam, characterized in that the upper and lower sides are formed in a plane along the direction of the impact load on the side impact on the beam body to form an elliptical rigid complementary portion, and a concave portion is formed around the center of the rigid supplementary portion.
KR1019950047695A 1995-12-08 1995-12-08 Door impact beam KR0165191B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950047695A KR0165191B1 (en) 1995-12-08 1995-12-08 Door impact beam

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KR1019950047695A KR0165191B1 (en) 1995-12-08 1995-12-08 Door impact beam

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KR970035095A KR970035095A (en) 1997-07-22
KR0165191B1 true KR0165191B1 (en) 1998-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102409709B1 (en) 2021-11-30 2022-06-16 박정민 Cable connecter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100373987B1 (en) * 2000-11-08 2003-02-26 한국과학기술원 Impact beam for car door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102409709B1 (en) 2021-11-30 2022-06-16 박정민 Cable connecter

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