KR20130099908A - A bumper back beam for vehicle - Google Patents

A bumper back beam for vehicle Download PDF

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Publication number
KR20130099908A
KR20130099908A KR1020130091859A KR20130091859A KR20130099908A KR 20130099908 A KR20130099908 A KR 20130099908A KR 1020130091859 A KR1020130091859 A KR 1020130091859A KR 20130091859 A KR20130091859 A KR 20130091859A KR 20130099908 A KR20130099908 A KR 20130099908A
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KR
South Korea
Prior art keywords
impact
back beam
bumper
reinforcement
tower
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KR1020130091859A
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Korean (ko)
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KR101319754B1 (en
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정운덕
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정운덕
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Priority to KR1020130091859A priority Critical patent/KR101319754B1/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
    • B60R2019/1833—Structural beams therefor, e.g. shock-absorbing made of plastic material

Abstract

PURPOSE: A bumper back beam for vehicles is provided to prevent an impact unit and a side member from deforming or considerably damaging in the broken direction and to reinforce a stay impact absorbing unit by reducing the deformation of the stay when the impact is generated in a vehicle crash. CONSTITUTION: A bumper back beam (100) for vehicles comprises an impact unit (50) and a tower unit. A cross section of the impact unit is formed to have an inner space (55) which is broken to face an inner side of an opposite side of a bumper. A reinforcing member (80) is stored in the inner space. The reinforcing member is formed by a curvature which is smaller than the back beam and an available space is formed to both sides between the impact unit and the reinforcing member forming the inner space. The reinforcing member is formed in a closed cross section shape. A plurality of ribs is installed to fill the available space in the reinforcing member or the back beam.

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 멤버와 스테이가 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 and the stay, in particular while maintaining the proper deformation in the case.

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)와, In order to achieve this object, the present invention, the impact unit 50 is located in the center,

상기 임펙트부(50)의 양측 후방에 형성되어 차체의 사이드 멤버(90) 선단에 취부된 크래쉬박스(91)에 마운팅 고정되는 타워부(60)로 이루어지는 자동차 백빔(100)의 임펙트부(50)에 단면이 범퍼의 반대 내측을 향해 트여지는 내부공간(55)을 각각 갖도록 성형하고,Impact portions 50 of the automobile back beam 100 formed of both sides of the impact portion 50 is formed of the tower portion 60 is fixed to the crash box 91 mounted to the front end of the side member 90 of the vehicle body (100) To each of the inner space 55 has a cross section open toward the inner side of the bumper,

이 내부공간(55)에는 보강재(80)를 수납하되, 이 내부공간(55)에 수납된 보강재(80)는 백빔(100)보다 작은 곡률(R1)로 성형하여 내부공간(55)을 형성하는 임펙트부(50)와 보강재(80) 사이에 양측으로 여유공간(S)이 형성되도록 하는 것에 있어서,The reinforcement 80 is accommodated in the internal space 55, but the reinforcement 80 contained in the internal space 55 is formed to have a curvature R1 smaller than that of the back beam 100 to form the internal space 55. In such that the free space (S) is formed on both sides between the impact portion 50 and the stiffener 80,

상기 보강재(80)는 폐단면 형상으로 그 양쪽 끝단면이 크래쉬박스(91)에 평행하게 성형된 상태로 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 면접촉된 상태로 함께 마운팅 고정되게 하고,The reinforcement 80 has a closed cross-sectional shape and both end surfaces thereof are formed in parallel with the crash box 91 to extend to the position of the tower portion 60 of the automobile back beam 100 to be in surface contact with the crash box 91. Mounted together and secured together,

상기 보강재(80) 또는 백빔(100)에는 여유공간(S)을 채워지게 하는 리브들이 다수개 설치되는 것을 특징으로 한다.
The reinforcement 80 or the back beam 100 is characterized in that a plurality of ribs to fill the free space (S) is installed.

이러한 본 발명의 구성에 의하면, 백빔(100)의 내부공간(55)에 백빔(100)보다 작은곡률(R1)로 된 보강재(80)를 더 설치하는 것에 의해 그 양측으로 여유공간(S)이 형성된다.According to the configuration of the present invention, by providing a reinforcing material 80 of curvature R1 smaller than the back beam 100 in the inner space 55 of the back beam 100, the free space (S) on both sides thereof. Is formed.

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

그리고, 자동차 추돌에 의해 충격발생시에 스테이의 변형을 줄여 결과적으로 스테이 충격 흡수부를 강화할 수 있는 것이다. In addition, it is possible to reduce the deformation of the stay at the time of the impact caused by the collision of the car, and consequently to strengthen the stay shock absorbing part.

또, 충격이 가해진 경우에 적정 변형을 유지할 수 있고, 임펙트부가와 사이드 멤버가 벌어짐 방향으로 변형되거나 크게 손상되는 것을 방지할 수도 있어, 제품의 내구성과 최종 충격 허용량을 증가시킬 수 있는 것이다.
In addition, when the impact is applied, the proper deformation can be maintained, and the impact portion and the side member 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 7 내지 도 9는 종래 스틸재 구조를 보인 사시도.
도 10 내지 도 13은 본 발명의 실시예를 도시한 것으로,
도 10는 백빔에 보강재가 조립된 상태를 보인 사시도.
도 11은 백빔의 내부로 설치된 보강재의 곡률 차이를 보인 설치상태 평면도.
도 12는 본 발명의 보강재를 보인 사시도.
도 13은 본 발명의 조립상태 종단면도
도 14는 본 발명의 백빔이 설치되는 상태를 보인 평면도1 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 structure.
10 to 13 show an embodiment of the present invention,
10 is a perspective view showing a state in which the reinforcing material is assembled to the back beam.
11 is a plan view showing the difference in curvature of the reinforcement installed into the back beam;
12 is a perspective view showing a reinforcing material of the present invention.
Figure 13 is a longitudinal cross-sectional view of the assembled state of the present invention
14 is a plan view showing a state in which the back beam of the present invention is installed

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 굴곡이 없도록 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 formed so as not to bend and is positioned in front of the vehicle body to absorb and substantially receive the impact, the impact portion 50 and the side members of the vehicle body on both sides of the impact portion 50, respectively It consists large of the tower part 60 attached to the stay of 90.

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

본 발명의 보강재(80)는 도 13에서 도시한 1실시예에서와 같이 사각 단면형상의 폐단면부를 갖게 된다.The reinforcing material 80 of the present invention has a closed cross section of a rectangular cross section as in the first embodiment shown in FIG.

한편, 자동차 백빔(100)의 몸체 상하부 플랜지에 임펙트부(50)와 타워부(60) 사이를 경사부(70)로 연결하는 형상으로 제작될 수 있다.On the other hand, it may be manufactured in the shape of connecting the inclined portion 70 between the impact portion 50 and the tower portion 60 in the upper and lower body flange of the automobile back beam 100.

이 자동차 백빔(100)을 구성하는 임펙트부(50)는 대략 "C"형 단면 형상으로 범퍼의 반대측, 즉 내부를 향해 하나의 내부공간(55)을 형성하게 된다.The impact part 50 constituting the automobile back beam 100 has a substantially "C" cross-sectional shape, and forms an inner space 55 toward the opposite side of the bumper, that is, the inside.

그리고, 이 내부공간(55)에 작은곡률(R1)을 갖는 보강재(80)를 설치하게 된다.In this internal space 55, a reinforcing material 80 having a small curvature R1 is provided.

또, 도 11에서와 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 Figure 11, the reinforcing bar 88 for connecting across the both ends of the reinforcing material 80 may be fixedly attached to one or more than one.

보강재(80)는 스틸 또는 알루미늄재질, 그리고 강도가 우수한 합성수지재로 내부공간(55)의 내측으로 위치된 상태에서 굴곡이 없는 백빔(100)보다 상대적으로 작은곡률(R1)로 이루어져 있으므로, 보강재(80)의 중앙은 내부공간(55)의 중심부에 접촉된 상태에서 그 양측에는 내부공간(55)과 보강재(80)의 사이에 여유공간(S)이 형성되도록 하는 것이다.Since the reinforcement 80 is made of steel or aluminum, and a synthetic resin having excellent strength, the reinforcement 80 is made of a relatively small curvature R1 than the back beam 100 having no bending in the state of being positioned inside the inner space 55. The center of the 80 is to allow the free space (S) is formed between the inner space 55 and the reinforcing material 80 on both sides thereof in contact with the center of the inner space (55).

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.

또, 백빔(100)에도 여유공간(S)을 채워지게 하는 리브들이 다수개 돌출되도록 성형하여 허용강도를 더 보강할 수도 있게 된다.In addition, the back beam 100 may also be formed to protrude a plurality of ribs to fill the free space S to further reinforce the allowable strength.

보강재(80)의 양단부는 자동차 백빔(100)의 타워부(60) 위치까지 연장되는데, 양쪽 끝단면이 크래쉬박스(91)에 평행하게 성형되어 면접촉 상태로 백빔(100)과 보강재(80)가 각각 마운팅 고정된다.Both ends of the reinforcement 80 extends to the position of the tower portion 60 of the automobile back beam 100, and both end surfaces are formed in parallel to the crash box 91 so that the back beam 100 and the reinforcement 80 are in surface contact. Is fixed to each mounting.

이 보강재(80)는 도 13에서 도시한 1실시예에서와 같이 사각 단면형상의 폐단면부를 갖도록 성형하는 경우 허용강도가 더 증대된다.When the reinforcing material 80 is molded to have a closed cross section of a rectangular cross-sectional shape as in the first embodiment shown in Fig. 13, the allowable strength is further increased.

또, 도 11에서와 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 Figure 11, the reinforcing bar 88 for connecting across the both ends of the reinforcing material 80 may be fixedly attached to one or more than one.

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 백빔(100)보다 작은곡률(R1) 크기는 범퍼보강부재가 필요로 하는 강도에 따라 변화할 수 있는데, 필요강도가 증가하는 경우에는 반경을 감소시키고, 필요강도가 감소하는 경우에는 반경을 증대시킨다.In addition, the size of the curvature R1 smaller than the back beam 100 of the reinforcement 80 may vary according to the strength required by the bumper reinforcement member. When the required strength is increased, the radius is decreased and the required strength is decreased. If so, increase the radius.

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)와 스테이의 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 Deformation and damage of the side member 90 and the stay can be reduced.

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 - 내부공간
60 - 타워부 70 - 경사부
80 - 보강재 81 - 리브
90 - 사이드멤버 91 - 크래쉬박스
100 - 자동차 백빔 R1 - 작은곡률50-Impact 55-Interior
60-Tower 70-Slope
80-Stiffener 81-Rib
90-Sidemember 91-Crashbox
100-Automotive Back Beam R1-Small Curvature

Claims (3)

중앙부에 위치되는 임펙트부(50)와,
상기 임펙트부(50)의 양측 후방에 형성되어 차체의 사이드 멤버(90) 선단에 취부된 크래쉬박스(91)에 마운팅 고정되는 타워부(60)로 이루어지는 자동차 백빔(100)의 임펙트부(50)에 단면이 범퍼의 반대 내측을 향해 트여지는 내부공간(55)을 각각 갖도록 성형하고,
이 내부공간(55)에는 보강재(80)를 수납하되, 이 내부공간(55)에 수납된 보강재(80)는 백빔(100)보다 작은 곡률(R1)로 성형하여 내부공간(55)을 형성하는 임펙트부(50)와 보강재(80) 사이에 양측으로 여유공간(S)이 형성되도록 하는 것에 있어서,
상기 보강재(80)는 폐단면 형상으로 하고,
상기 보강재(80) 또는 백빔(100)에는 여유공간(S)을 채워지게 하는 리브들이 다수개 설치되는 것을 특징으로 하는 자동차용 범퍼 백빔.
An impact part 50 located at the center part,
Impact portions 50 of the automobile back beam 100 formed of both sides of the impact portion 50 is formed of the tower portion 60 is fixed to the crash box 91 mounted to the front end of the side member 90 of the vehicle body (100) To each of the inner space 55 has a cross section open toward the inner side of the bumper,
The reinforcement 80 is accommodated in the internal space 55, but the reinforcement 80 contained in the internal space 55 is formed to have a curvature R1 smaller than that of the back beam 100 to form the internal space 55. In such that the free space (S) is formed on both sides between the impact portion 50 and the stiffener 80,
The reinforcing material 80 is a closed cross-sectional shape,
The bumper back beam for automobiles, characterized in that a plurality of ribs for filling the free space (S) is installed in the reinforcement (80) or the back beam (100).
청구항 1에 있어서, 상기 자동차 백빔(100)의 임펙트부(50)와 타워부(60) 사이를 경사부(70)로 연결하는 형상으로 성형됨을 특징으로 하는 자동차용 범퍼 백빔.
The bumper backbeam for automobiles according to claim 1, wherein the bumper backbeam for automobiles is formed into a shape connecting the impact part 50 and the tower part 60 to the inclined part 70 of the automobile back beam 100.
청구항 1에 있어서, 상기 보강재(80)에는 양단부를 가로 질러서 연결하는 보강바(88)가 적어도 하나 이상 고정 부착됨을 특징으로 하는 자동차용 범퍼 백빔.The bumper back beam of claim 1, wherein at least one reinforcing bar 88 is connected to the reinforcing member 80 and connected to both ends thereof.
KR1020130091859A 2013-08-02 2013-08-02 a Bumper back beam for vehicle KR101319754B1 (en)

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