KR20130028765A - A bumper back beam for vehicle - Google Patents

A bumper back beam for vehicle Download PDF

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Publication number
KR20130028765A
KR20130028765A KR1020130014087A KR20130014087A KR20130028765A KR 20130028765 A KR20130028765 A KR 20130028765A KR 1020130014087 A KR1020130014087 A KR 1020130014087A KR 20130014087 A KR20130014087 A KR 20130014087A KR 20130028765 A KR20130028765 A KR 20130028765A
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South Korea
Prior art keywords
back beam
bumper
reinforcement
impact
vehicle
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KR1020130014087A
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Korean (ko)
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KR101564750B1 (en
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성준엽
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성준엽
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Priority to KR1020130014087A priority Critical patent/KR101564750B1/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
    • B60R19/023—Details
    • 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
    • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
    • 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
    • B60R19/04—Bumpers, 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
    • 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
    • B60R2019/026—Buffers, i.e. bumpers of limited extent
    • 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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • 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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • 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
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material

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

Abstract

PURPOSE: A bumper back beam for a vehicle is provided to increase final impact tolerance by forming space between the back beam and a reinforcing member. CONSTITUTION: A bumper back beam for a vehicle comprises a back beam(100) and a reinforcing member(80). The back beam forms closed section parts(56,57) and absorbs impact of the vehicle. The reinforcing member is formed into smaller curvature than the back beam, is settled in installation space formed by the closed section part, and absorbs the impact by forming space which is overlapped in the back beam and the settled space.

Description

자동차용 범퍼 백빔 {a Bumper back beam for vehicle}Bumper back beam for vehicle}

본 발명은 자동차용 범퍼 백빔에 관한 것으로, 더욱 상세하게는 사이드 멤버를 연결하는 합성수지재 백빔의 내부로 보강재를 삽입하되 백빔과 보강재를 서로 다른 곡률로 성형하여 내충격성을 향상시킴과 아울러 충격이 가해진 경우에 적정 변형을 유지하면서, 특히 사이드 멤버가 손상되는 것을 방지하도록 발명된 것이다. The present invention relates to a bumper back beam for automobiles, and more particularly, inserting a reinforcement into the interior of the synthetic resin back beam connecting the side members, and molding the back beam and the reinforcement with different curvatures to improve impact resistance and impact. It is invented so as to prevent damage to the side member, in particular while maintaining appropriate strain.

일반적으로, 차량용 범퍼 보강부재는 차량의 범퍼 후방에 설치되어 충돌시 충격을 완화시켜 준다.In general, a vehicle bumper reinforcement member is installed at the rear of the bumper of the vehicle to mitigate the impact in the event of a collision.

도 1은 일반적인 차량용 범퍼(1) 및 차량용 범퍼 보강부재(10)의 분해 사시도 이다. 도시한 바와 같이, 차량용 범퍼 보강부재(10)는 차량의 범퍼(1) 후방에 설치되어 충돌시 충격을 완화시켜 준다.1 is an exploded perspective view of a general vehicle bumper 1 and a vehicle bumper reinforcement member 10. As shown, the vehicle bumper reinforcement member 10 is installed at the rear of the bumper 1 of the vehicle to mitigate the impact during a collision.

도 2는 도 1에 도시한 차량용 범퍼 보강부재의 일부 단면도이다.FIG. 2 is a partial cross-sectional view of the vehicle bumper reinforcement member shown in FIG. 1.

이 보강 부재(10)는 범퍼(1)의 형상을 따라 디귿자 형으로 중앙에 위치되는 본체(12)와, 상기 본체(12)의 양 단부쪽으로 치우치게 설치되며 수직의 측면(16)을 갖는 하나 이상의 타워(14)를 포함하여 구성된다.The reinforcing member 10 has a main body 12 centrally located in the shape of a bumper 1 along the shape of the bumper 1, and at least one of which is installed to be biased toward both ends of the main body 12 and has a vertical side surface 16. It is configured to include a tower (14).

상기 타워(14)는 베이스 플레이트에서 차체(미도시)에 마운팅 되는데, 충돌시 범퍼 자체에서 발생되는 압축 또는 인장력이 차체에 직접 전달되지 않고 완화되어 전달되도록 하는 기능을 한다. 따라서, 충돌 발생시 가장 안쪽에 위치한 타워의 내측면과 본체에서 상기 타워의 내측면과 연결된 부분에서 변형이 가장 많이 발생한다.The tower 14 is mounted on the vehicle body (not shown) in the base plate, and functions to allow the compression or tensile force generated in the bumper itself to be relaxed and transmitted instead of being directly transmitted to the vehicle body during a collision. Therefore, when the collision occurs, deformation occurs most frequently at the inner surface of the innermost tower and the main body connected to the inner surface of the tower.

이와 같은 수직측면의 타워(14)를 구비한 범퍼는 정면 또는 측면에서 충돌이 일어나는 경우 도 3의 A부분과 같이 전달되는 힘에 의하여 타워 및 보강 구조체의 변형이 심하고, 또한 이러한 변형이 영구적인 것이어서 약한 충돌에도 범퍼전체를 갈아야 하는 경우가 발생하게 되었다.The bumper having the vertical tower 14 as described above is severely deformed in the tower and the reinforcement structure by a force transmitted as shown in part A of FIG. 3 when a collision occurs in front or side, and such deformation is permanent. In the case of a weak collision, the entire bumper had to be changed.

이와 같은 문제점을 해결하기 위하여, 도 4 및 도 5에 도시한 대한민국 특허등록 0340464호와 같은 보강 부재의 몸체와 타워의 결합부를 경사지게 형성하여 충돌시 변형을 최소화함과 동시에 영구 변형을 줄여 범퍼의 수명을 연장시키는 범퍼가 고안되었다.In order to solve this problem, the joint of the reinforcing member body and the tower, such as the Republic of Korea Patent Registration No. 0340464 shown in Figs. A bumper has been devised that extends.

그러나, 도시한 바와 같이, 이 종래 범퍼는 보강 부재의 몸체와 타워의 결합부를 경사지게 형성하여, 도 5의 단면도에서 도시한 바와 같이 경사면(20)이 상부 플레이트(18)와 하부 플레이트(19)의 중단을 지지함으로써, 연결부를 강하게 하여 발생하중을 증대시켰으나, 강화된 연결부로 인하여 발생 변형을 적절히 흡수할 수가 없기 때문에, 소정이상의 충격이 가해지는 경우에는 본체의 일부(C)가 파단되어, 이 범퍼가 흡수하는 충돌에너지는 상기 파단으로 인하여 그리 높지 않게 형성된다는 문제점이 발생하였다.However, as shown, this conventional bumper forms an inclined joint of the body of the reinforcing member and the tower so that the inclined surface 20 of the upper plate 18 and the lower plate 19 as shown in the cross-sectional view of FIG. By supporting the interruption, the connecting portion was strengthened to increase the generated load. However, since the generated deformation cannot be absorbed properly due to the strengthened connecting portion, a part C of the main body is broken when a predetermined shock is applied, and this bumper There is a problem that the collision energy absorbed is not formed so high due to the break.

또한 이 종래의 범퍼는 충돌 때 상부플레이트와 하부플레이트의 끝단이 범퍼 커버를 짓누르게 되어 범퍼 커버에 손상을 줄 수 있으며, 범퍼 커버와 선접촉을 하고 있는 상부플레이트와 하부플레이트 끝단이 꺽여서 보강부재의 일부가 파손된다는 문제점이 있었다.In addition, this conventional bumper may damage the bumper cover when the ends of the upper plate and the lower plate crush the bumper cover during collision, and the upper plate and the lower plate which are in line contact with the bumper cover are bent to reinforce the member. There was a problem that some of the breakage.

한편, 본원 출원인이 국내 특허출원 제 2007-49151호에서 선출원한 바와 같이 전방에 위치되는 임팩트부와 차체에 고정되는 타워부의 사이를 연결하는 연결부의 형상구조를 변경함으로써, 허용 강도를 증대시켜 큰 충격이 가해지는 경우에도 이에 대응하여 범퍼 보강부재의 일부가 적정하게 변형하도록 한 범퍼 보강부재도 제안된바 있었다.On the other hand, the applicant of the present application changes the shape structure of the connecting portion connecting between the impact portion located in front and the tower portion fixed to the vehicle body, as previously filed in the domestic patent application No. 2007-49151, to increase the allowable strength to a large impact In response to this, a bumper reinforcement member has also been proposed in which a part of the bumper reinforcement member is properly deformed.

또한, 도 8 및 도 9에서 도시한 바와 같이 스틸재로 단면이 "B"형상으로 중앙 임펙트부가 돌출되도록 완만한 곡면으로 성형되는 구조의 보강부재도 알려진바 있었다.In addition, as shown in FIGS. 8 and 9, a reinforcing member having a structure in which a cross section is formed into a smooth curved surface so as to protrude the central impact portion in a "B" shape has been known.

그러나, 범퍼 보강부재에 대한 다양한 형상 및 구조 변화로 자체 강성은 향상시킬 수 있었는데 반하여 설치 상태에서 추돌에 의해 전방 임팩트부를 통해 강한 충격이 전달해질 경우 타워부와 이 타워부가 마운팅되는 사이드 멤버가 크게 손상된다.However, due to various shapes and structural changes to the bumper reinforcement member, its rigidity can be improved, whereas when a strong impact is transmitted through the front impact part by collision in the installed state, the tower part and the side member on which the tower part is mounted are greatly damaged. do.

즉, 중앙 임팩트부를 통해 강한 충격이 전달될 경우 도 7에서와 같이 양측 사이드 멤버가 벌어지는 방향으로 충격 방향이 변화되어 사이드 멥버가 벌어지면서 크게 손상된다.That is, when a strong shock is transmitted through the central impact portion, as shown in FIG. 7, the impact direction is changed in the direction in which both side members are opened, thereby greatly damaging the side chamber.

또, 이 사이드 멤버에 마운팅되는 임펙트부도 크게 파손되거나 벌어짐 방향으로 변형된다.In addition, the impact portion mounted on the side member is also largely broken or deformed in the unfolding direction.

본 발명의 목적은 특히 임펙트부와 사이드 멤버가 벌어짐 방향으로 변형되거나 크게 손상되는 것을 방지할 수 있도록 한 범퍼 백빔을 제공하는데 있다.It is an object of the present invention, in particular, to provide a bumper backbeam which can prevent the impact portion and the side member from being deformed or greatly damaged in the opening direction.

본 발명의 다른 목적은 내구성과 최종 충격 허용량을 증가시키는 범퍼 백빔을 제공하는데 있다.Another object of the present invention is to provide a bumper backbeam that increases durability and final impact tolerance.

이러한 목적을 달성하기 위해 본 발명은, 중앙부에 위치되는 임펙트부(50)의 양측에 형성되어 차체의 사이드 멤버(90) 선단에 취부된 크래쉬박스(91)에 마운팅 고정되는 타워부(60)로 이루어지는 자동차 백빔(100)과,In order to achieve this object, the present invention is formed on both sides of the impact unit 50 located in the center portion to the tower portion 60 is fixed to the crash box 91 attached to the front end of the side member 90 of the vehicle body Car back beam 100 made of,

이 자동차 백빔(100)의 내측으로 설치되며 백빔(100)보다 작은곡률(R1)로 성형된 보강재(80)로 구성된 것에 있어서, In the vehicle back beam 100 is installed inside the reinforcement material 80 formed in a curvature R1 smaller than the back beam 100,

상기 백빔(100)은 단면 형상이 상하로 폐단면부(56)(57)를 형성하여 그 사이에 설치공간(55)이 마련되게 하고, The back beam 100 has a cross-sectional shape up and down to form closed end portions 56 and 57 so that the installation space 55 is provided therebetween.

이 설치공간(55)에 백빔(100)에 비하여 상대적으로 작은곡률(R1)로 성형된 보강재(80)를 설치하고, 양측으로 여유공간(S)이 형성되도록 하는 것을 특징으로 한다.The installation space 55 is characterized in that the reinforcing material 80 formed with a relatively small curvature R1 compared to the back beam 100 is installed, and the clearance S is formed on both sides.

여기서 보강재(80)에는 여유공간(S)을 채워지게 하는 리브(81)들이 돌출 성형되어 허용강도를 더 보강하게 된다.In this case, the ribs 81 for filling the free space S are protruded in the reinforcing material 80 to further reinforce the allowable strength.

또, 보강재(80)의 양단부는 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 함께 마운팅 고정된다.In addition, both ends of the reinforcing material 80 is extended to the position of the tower portion 60 of the vehicle back beam 100 is fixed to the crash box 91 together.

그리고, 이 보강재(80)는 폐단면부를 갖도록 성형하여 허용강도를 증대시키도록 한다.Then, the reinforcing material 80 is molded to have a closed end portion to increase the allowable strength.

이러한 본 발명의 구성에 의하면, 백빔(100)의 내측으로 백빔(100)보다 작은곡률(R1)로 성형된 보강재(80)를 설치하여 백빔(100)과 보강재(80) 사이에 양측으로 여유공간(S)이 형성된다.According to the configuration of the present invention, by installing the reinforcement 80 formed in the curvature R1 smaller than the back beam 100 to the inside of the back beam 100, the clearance between the back beam 100 and the reinforcement 80 on both sides (S) is formed.

따라서, 최종 충격 허용량을 증가시킬 수 있다.Therefore, the final impact tolerance can be increased.

또, 충격이 가해진 경우에 적정 변형을 유지할 수 있고, 임펙트부와 사이드 멤버가 벌어짐 방향으로 변형되거나 크게 손상되는 것을 방지할 수도 있어, 제품의 내구성과 최종 충격 허용량을 증가시킬 수 있는 것이다.In addition, when an impact is applied, proper deformation can be maintained, and the impact portion and side members can be prevented from being deformed or greatly damaged in the unfolding direction, thereby increasing the durability and the final impact tolerance of the product.

도 1은 일반적인 차량 범퍼와 차량범퍼 보강부재의 분해 사시도이다.
도 2는 종래 차량 범퍼 보강부재의 단면도이다.
도 3은 종래 범퍼 보강부재가 충돌에 의해 사이드 멤버와 함께 변형되는 상태를 보인 이해도.
도 4는 종래 다른 차량 범퍼의 사시도이다.
도 5는 도 4의 A-A'부의 단면도이다.
도 6은 종래 범퍼 보강부재의 일측 단부를 확대하여 도시한 횡단면도이다.
도 7은 내지 도 9는 종래 스틸빔 구조를 보인 사시도.
도 10은 본 발명의 백빔에 보강재가 조립된 상태를 보인 사시도.
도 11은 본 발명의 백빔의 내부로 설치된 보강재의 곡률 차이를 보인 설치상태 평면도.
도 12은 본 발명에 의한 보강재를 보인 사시도.
도 13는 돌 발명의 백빔이 상하 폐단면부로 분할되어 그 사이에 형성된 설치공간으로 보강재가 설치된 구조를 보인 도 10의 종단면도.
도 14는 직사각 형태의 폐단면으로 된 백빔의 내측으로 보강재가 설치된 구조를 보인 사시도.
도 15는 도 14 실시예의 평면도.
도 16a 내지 도 16c는 보강재의 형상 변화를 보인 실시예의 단면도.1 is an exploded perspective view of a general vehicle bumper and a vehicle bumper reinforcement member.
2 is a cross-sectional view of a conventional vehicle bumper reinforcement member.
3 is a view illustrating a state in which a conventional bumper reinforcement member is deformed together with a side member by a collision;
4 is a perspective view of another conventional bumper vehicle.
5 is a cross-sectional view taken along the line AA ′ of FIG. 4.
Figure 6 is an enlarged cross-sectional view showing one end of the conventional bumper reinforcing member.
7 to 9 is a perspective view showing a conventional steel beam structure.
10 is a perspective view showing a state in which the reinforcing material is assembled to the back beam of the present invention.
11 is a plan view showing an installation state showing the difference in curvature of the reinforcement installed into the back beam of the present invention;
12 is a perspective view showing a reinforcing material according to the present invention.
FIG. 13 is a longitudinal sectional view of FIG. 10 showing a structure in which a back beam of a stone invention is divided into upper and lower closed end portions and a reinforcement is installed as an installation space formed therebetween;
Figure 14 is a perspective view showing a structure in which the reinforcing material is installed in the back beam of the rectangular closed cross section.
15 is a top view of the FIG. 14 embodiment.
16A to 16C are sectional views of the embodiment showing the shape change of the reinforcing material.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명인 자동차 백빔(100)은 주로 스틸이나 알루미늄과 같은 금속재로 성형되며 차체의 전방에 위치되어 실질적으로 충격을 전달받아 흡수하는 것으로, 임펙트부(50)와, 상기 임펙트부(50)의 양측에서 각각 차체의 사이드 멤버(90)의 스테이에 취부되는 타워부(60)로 크게 이루어진다.Car back beam 100 of the present invention is mainly formed of a metal material such as steel or aluminum and positioned in front of the vehicle body to substantially absorb and receive the impact, the impact unit 50, and both sides of the impact unit 50 It consists of the tower part 60 respectively attached to the stay of the side member 90 of a vehicle body.

이때, 사이드 멤버(90)와 타워부(60) 사이에는 크래쉬박스(91)가 설치되기도 한다.In this case, the crash box 91 may be installed between the side member 90 and the tower portion 60.

본 발명의 자동차 백빔(100)은 도 16에서와 같이 상하로 길이가 긴 직사각 형태로 폐단면을 형성하게 된다.As shown in FIG. 16, the automobile back beam 100 of the present invention forms a closed cross section in a rectangular shape having a long vertical length.

그리고 백빔(100)의 내측으로는 백빔(100)보다 작은곡률(R1)로 성형된 보강재(80)를 설치하여 백빔(100)과 보강재(80) 사이에 양측으로 여유공간(S)이 형성된다.In addition, a space S is formed between the back beam 100 and the reinforcement 80 by installing a reinforcement 80 formed at a curvature R1 smaller than the back beam 100 inside the back beam 100. .

한편, 도 13에서와 같이 백빔(100)은 길이 방향을 따라 전체적으로 완만한 호 형상으로 성형되는데, 그 단면 형상은 상하로 폐단면부(56)(57)를 갖도록 하고 그 사이에 설치공간(55)이 마련되게 성형하게 된다On the other hand, as shown in Figure 13, the back beam 100 is formed in a gentle arc shape along the longitudinal direction as a whole, the cross-sectional shape is to have a closed end portion 56, 57 up and down and the installation space 55 therebetween. It is molded to be provided

그리고, 이 설치공간(55)에 금속재질 또는 강도가 우수한 합성수지재로 된 보강재(80)를 수납하게 된다.In the installation space 55, the reinforcing material 80 made of a metal material or a synthetic resin having excellent strength is accommodated.

이때, 설치공간(55)에 위치되는 보강재(80)의 중앙부는 설치공간(55)의 내측 중심부와 접촉되고, 그 양측으로는 곡률 차이로 인해 여유공간(S)이 형성되는 것이다.At this time, the central portion of the reinforcing material 80 is located in the installation space 55 is in contact with the inner central portion of the installation space 55, the clearance space (S) is formed on both sides due to the curvature difference.

즉, 상기 보강재(80)는 도 11에서 도시한 바와 같이 백빔(100)의 설치공간(55) 내측으로 위치된 상태에서 곡률이 큰 백빔(100)에 상대적으로 작은곡률(R1)로 이루어져 있으므로, 보강재(80)의 중앙은 설치공간(55)의 중심부에 접촉된 상태에서 그 양측에는 설치공간(55)과 보강재(80)의 사이에 여유공간(S)이 형성되는 것이다.That is, since the reinforcement 80 is made of a relatively small curvature (R1) relative to the back beam 100 having a large curvature in the state of being located inside the installation space 55 of the back beam 100, as shown in FIG. In the center of the reinforcing material 80 is in contact with the center of the installation space 55 is a free space (S) is formed between the installation space 55 and the reinforcing material (80) on both sides.

이때, 이 보강재(80)에는 여유공간(S)을 채워지게 하는 리브(81)들이 다수개 돌출되도록 성형하여 허용강도를 더 보강하게 된다.At this time, the reinforcing material 80 is formed so as to protrude a plurality of ribs 81 to fill the free space (S) to further reinforce the allowable strength.

보강재(80)의 양단부는 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 함께 마운팅 고정된다.Both ends of the reinforcing material 80 is extended to the position of the tower portion 60 of the vehicle back beam 100 is fixed to the crash box 91 mounting together.

이때 보강재(80)를 마운팅 시키기 위하여 도 11 및 도 15에서 도시한 바와 같이 보강재(80)가 타워부(60) 까지 연장된 그 단부를 스테이(61)로 감싼 상태에서 크래쉬박스(91)에 함께 마운팅 된다.In this case, as shown in FIGS. 11 and 15 to mount the reinforcement 80, the end of which the reinforcement 80 extends to the tower portion 60 is wrapped with the stay 61 together in the crash box 91. It is mounted.

스테이(61)도 용접이 가능한 금속재로 대략 "ㄷ" 형상으로 절곡 성형된 상태에서 보강재(80)와 자동차 백빔(100)을 용접의 방법으로 각각 고정시키는 방법으로 일체화 시킨다.The stay 61 is also integrated by a method of fixing the reinforcement 80 and the automobile back beam 100 by welding, respectively, in a state of being bent and formed into a roughly "c" shape with a weldable metal material.

그리고, 본 발명의 보강재(80)는 도 13에서 도시한 바와 같이 상하로 거리를 두고 "B"형상의 폐단면부를 갖도록 성형하는 경우 허용강도가 더 증대된다.And, as shown in Figure 13, the reinforcing material 80 of the present invention is further increased allowable strength when molded to have a closed end portion of the "B" shape at a distance up and down.

또, 도 16a 내지 도 16c에서 도시한 바와 같이 폐단면 내부로 강도 보강을 위해 다양한 형상으로 보강살들이 구비되도록 제작될 수 있음을 밝혀둔다.In addition, as shown in Figures 16a to 16c it will be found that the reinforcement can be provided in a variety of shapes for strength reinforcement into the closed end surface.

또, 도 11 및 도 15에서와 같이 상기 보강재(80)의 양단부를 가로 질러서 연결하는 보강바(88)가 하나 또는 하나 이상 복수로 고정 부착할 수 있다.In addition, as shown in FIGS. 11 and 15, one or more reinforcement bars 88 for connecting across both ends of the reinforcement material 80 may be fixedly attached.

따라서, 충격 흡수량이 향상되고 강도를 더 커지게 되므로, 동일 허용 강도에 대해 제품의 무게를 더 줄일 수 있고, 변형을 줄일 수 있는 것이다.Therefore, since the shock absorbing amount is improved and the strength is increased, the weight of the product can be further reduced and the deformation can be reduced for the same allowable strength.

그리고, 보강재(80)의 작은곡률(R1) 크기는 범퍼보강부재가 필요로 하는 강도에 따라 변화할 수 있는데, 필요강도가 증가하는 경우에는 반경을 감소시키고, 필요강도가 감소하는 경우에는 반경을 증대시킨다.The small curvature R1 of the stiffener 80 may vary according to the strength required by the bumper reinforcement member. When the required strength is increased, the radius is decreased, and when the required strength is decreased, the radius is reduced. Increase

이와 같이 구성된 본 실시예의 작용을 살펴보면 다음과 같다.Looking at the operation of this embodiment configured as described above are as follows.

범퍼의 전방부에 충격이 가해지면, 그 충격은 임펙트부(50)의 중앙부를 통해 타워부(60)에 전해져 변형시킨다.When an impact is applied to the front portion of the bumper, the impact is transmitted to the tower portion 60 through the center portion of the impact portion 50 to be deformed.

본 발명에서는 충격이 임펙트부(50)와 보강재(80)에 의해 분할되어 타워부(60)와 이를 취부하고 있는 사이드 멤버(90) 또는 크래쉬박스(91)에 전달된다.In the present invention, the impact is divided by the impact unit 50 and the reinforcing material 80 is transmitted to the tower portion 60 and the side member 90 or crash box 91 mounting them.

이때 보강재(80)가 전면을 향해 완만하게 곡면을 이루는 작은곡률(R1)로 성형하여 중심 양측으로 여유공간(S)이 형성되도록 하는 것에 의해 충격량을 분산시켜 타워부(60)와 이를 취부하고 있는 사이드 멤버(90)의 변형과 파손 정도를 줄일 수 있는 것이다.At this time, the reinforcing material 80 is molded into a small curvature (R1) to form a gentle curved toward the front surface by dispersing the impact amount by forming a free space (S) on both sides of the center to mount the tower portion 60 and this It is possible to reduce the deformation and damage of the side member (90).

즉, 자동차 추돌시 1차 자동차 백빔이 충격을 흡수하게 되고, 여유공간(S)에 의해 시간차를 두고 2차 보강재(80)에 의해 충격량이 전달되는 것에 의해 분산 효과를 유도할 수가 있는 것이다.That is, when the vehicle collides, the primary vehicle back beam absorbs the shock, and the dispersion amount can be induced by transmitting the impact amount by the secondary reinforcing material 80 at a time difference by the clearance S.

따라서, 범퍼에 큰 충격이 가해지는 경우에도 백빔은 물론 사이드 멤버(90)의 파단을 방지함은 물론, 최종 충격 허용량을 증가시킬 수 있고, 충격이 가해진 경우에 적정 변형을 유지할 수 있는 것이다.Therefore, even when a large impact is applied to the bumper, not only the back beam but also the breakage of the side member 90 can be prevented, and the final impact tolerance can be increased, and the proper deformation can be maintained when the impact is applied.

50 - 임펙트부 55 - 설치공간
60 - 타워부 80 - 보강재
81 - 리브 90 - 사이드멤버
91 - 크래쉬박스 100 - 자동차 백빔
R1 - 작은곡률50-Impact 55-Installation Space
60-Tower 80-Reinforcement
81-Rib 90-Sidemember
91-Crashbox 100-Car Back Beam
R1-small curvature

Claims (8)

폐단면부를 형성하여 차량 충격시 충격을 흡수하는 백빔, 및
상기 백빔보다 작은곡률(R1)로 형성되어 상기 폐단면부에 의해 형성된 설치공간에 안착 됨으로써 상기 백빔과 안착된 영역에서 서로 겹쳐지는 영역이 형성되어 충격을 흡수하는 보강재를 포함하는 것을 특징으로 하는 자동차용 범퍼 백빔.
A back beam which forms a closed cross section to absorb an impact during a vehicle impact, and
The vehicle is formed with a curvature R1 smaller than the back beam and is seated in an installation space formed by the closed end surface, thereby forming a region overlapping each other in the seated area with the back beam, thereby including a reinforcing material for absorbing shock. Bumper Back Beam.
제 1 항에 있어서,
상기 보강재에 전달되는 충격은,
상기 보강재가 상기 백빔에 안착 되므로 인해 상기 백빔과 상기 보강재 사이에 형성된 여유공간에 의해 시간차를 두고 충격량이 전달되는 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 1,
The shock delivered to the reinforcement,
The bumper back beam for automobiles, characterized in that the impact amount is transmitted with a time difference by the free space formed between the back beam and the reinforcement because the reinforcement is seated on the back beam.
제 1 항에 있어서,
상기 백빔 또는 상기 보강재의 폐단면부는,
B 섹션으로 이루어진 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 1,
The closed end portion of the back beam or the reinforcement,
Bumper back beam for cars, characterized in that consisting of B sections.
제 3 항에 있어서,
상기 보강재는 상기 백빔의 B 섹션의 중단에서 상기 백빔의 길이방향을 따라 안착되며, 상기 백빔보다 작은곡률(R1)에 의해 상기 백빔과 상기 보강재 사이에 길이방향을 따라 여유공간이 형성되는 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 3, wherein
The reinforcement is seated along the longitudinal direction of the back beam at the interruption of the B section of the back beam, and the clearance is formed along the longitudinal direction between the back beam and the reinforcement by a curvature R1 smaller than the back beam. Bumper back beam for cars.
제 1 항에 있어서,
상기 설치공간은,
상기 백빔의 상측 폐단면과 상기 백빔의 하측 폐단면의 사이에 상기 백빔의 길이방향을 따라 형성된 홈이고,
상기 홈에 상기 보강재가 안착됨으로써 상기 백빔과 상기 보강재가 서로 구속될 수 있는 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 1,
The installation space,
A groove formed along the longitudinal direction of the back beam between an upper closed end face of the back beam and a lower closed end face of the back beam,
The back beam and the bumper back beam for the vehicle, characterized in that the back beam and the reinforcing material can be restrained from each other by being seated in the groove.
제 2 항에 있어서,
상기 여유공간에 리브(81)가 형성됨으로써 백빔의 강성을 높일 수 있는 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 2,
The bumper back beam for automobiles, wherein the rib 81 is formed in the clearance to increase rigidity of the back beam.
제 5 항에 있어서,
상기 백빔의 상측 폐단면과 상기 백빔의 하측 폐단면에 상기 보강재가 각각 맞닿은 영역을 용접함으로써 백빔의 강성을 높일 수 있는 것을 특징으로 하는 자동차용 범퍼 백빔.
The method of claim 5, wherein
A bumper back beam for automobiles, wherein the rigidity of the back beam can be increased by welding a region where the reinforcing member abuts on the upper closed end face of the back beam and the lower closed end face of the back beam.
제 1 항에 있어서,
상기 백빔 또는 상기 보강재에는,
양 단부를 가로질러서 연결하는 보강바가 적어도 하나 이상 고정 부착됨을 특징으로 하는 자동차용 범퍼 백빔.The method of claim 1,
In the back beam or the reinforcing material,
A bumper back beam for automobiles, characterized in that at least one reinforcing bar for connecting across both ends is fixedly attached.
KR1020130014087A 2013-02-07 2013-02-07 a Bumper back beam for vehicle KR101564750B1 (en)

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