KR101327567B1 - a Bumper back beam for vehicle - Google Patents

a Bumper back beam for vehicle Download PDF

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Publication number
KR101327567B1
KR101327567B1 KR1020110046971A KR20110046971A KR101327567B1 KR 101327567 B1 KR101327567 B1 KR 101327567B1 KR 1020110046971 A KR1020110046971 A KR 1020110046971A KR 20110046971 A KR20110046971 A KR 20110046971A KR 101327567 B1 KR101327567 B1 KR 101327567B1
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KR
South Korea
Prior art keywords
back beam
impact
bumper
reinforcing material
inner space
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KR1020110046971A
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Korean (ko)
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KR20120128989A (en
Inventor
정운덕
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성준엽
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Priority to KR1020110046971A priority Critical patent/KR101327567B1/en
Priority to CN201280024125.7A priority patent/CN103582585B/en
Priority to US14/118,060 priority patent/US9114767B2/en
Priority to PCT/KR2012/003915 priority patent/WO2012157986A2/en
Publication of KR20120128989A publication Critical patent/KR20120128989A/en
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Publication of KR101327567B1 publication Critical patent/KR101327567B1/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

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

Abstract

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.
본 발명의 구성은, 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)과 보강재(80)는 백빔(100)보다 작은곡률(R1)로 성형하여 내부공간(55)과 보강재(80) 사이에 양측으로 여유공간(S)이 형성되도록 하는 것에 있어서,
상기 임펙트부(50)는 상기 내부공간(55)의 상부와 하부로 단면이 범퍼측을 향하여 트여지는 외부공간(56)을 갖도록 성형하고,
상기 보강재(80)의 양쪽 끝단면이 크래쉬박스(91)에 평행하게 성형된 상태로 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 면접촉된 상태로 함께 마운팅 고정되는 것이다.The present invention relates to a bumper back beam for automobiles, and more specifically, a reinforcement material is inserted into a synthetic resin back beam that connects side members, but the back beam and the reinforcement are molded at different curvatures to improve impact resistance and impact. It was invented to prevent damage to the side members, especially while maintaining proper deformation in the case.
The configuration of the present invention, the impact portion 50 located in the central portion;
The impact portion 50 of the vehicle back beam 100, which is formed on both sides of the impact portion 50 and is made of a tower portion 60 fixed to the crash box 91 attached to the front end of the side member 90 of the vehicle body The cross section is molded to have inner spaces 55 that open toward the opposite inner side of the bumper, respectively.
In this inner space 55, a reinforcing material 80 is accommodated, but the inner space 55 and the reinforcing material 80 are molded with a curvature R1 smaller than the back beam 100, and the inner space 55 and the reinforcing material 80 are formed. In so that the free space (S) is formed on both sides between,
The impact portion 50 is formed so as to have an outer space 56 in which the cross-section crosses toward the bumper side to the upper and lower portions of the inner space 55,
Both end faces of the reinforcing material 80 are formed to be parallel to the crash box 91 and extended to the position of the tower portion 60 of the automobile back beam 100 to be mounted in contact with the crash box 91 in surface contact. It is fixed.

Description

자동차용 범퍼 백빔 {a Bumper back beam for vehicle}{A 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 specifically, a reinforcement material is inserted into a synthetic resin back beam that connects side members, but the back beam and the reinforcement are molded at different curvatures to improve impact resistance and impact is applied. It was invented to prevent damage to the side members, in particular, while maintaining proper deformation in the case.

일반적으로, 차량용 범퍼 보강부재는 차량의 범퍼 후방에 설치되어 충돌시 충격을 완화시켜 준다.In general, the bumper reinforcement member for a vehicle is installed at the rear of the bumper of the vehicle to alleviate 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 alleviate the impact in the event of 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 illustrated 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 is at least one having a main body 12 located in the center of the shape of the bumper 1 along the shape of the bumper 1 and biased toward both ends of the main body 12 and having vertical side surfaces 16 It comprises 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) at the base plate, and functions to allow the compression or tensile force generated by the bumper itself to be transmitted without being directly transmitted to the vehicle body during collision. Therefore, when a collision occurs, deformation occurs most in the inner surface of the innermost tower and the part connected to the inner surface of the tower in the main body.

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 provided with the tower 14 of the vertical side is severely deformed of the tower and the reinforcement structure by the force transmitted as shown in part A of FIG. 3 when a collision occurs at the front or side, and this 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 body and the tower of the reinforcing member as shown in Korean Patent Registration No. 0340464 shown in FIGS. 4 and 5 is inclined to minimize deformation during collision and at the same time reduce permanent deformation to reduce bump life. A bumper that extends is devised.

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 the inclined coupling portion of the body and the tower of the reinforcing member, 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 middle end, the connection portion was strengthened to increase the generated load, but because the reinforced connection portion was unable to adequately absorb the generated deformation, a part C of the body was broken when an impact of more than a predetermined value was applied, and this bumper There was a problem that the collision energy absorbed is not so high due to the fracture.

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, in the conventional bumper, the ends of the upper plate and the lower plate may crush the bumper cover during a collision, thereby damaging the bumper cover, and the upper plate and the lower plate end portions in contact with the bumper cover are bent to reinforce the member. There was a problem that a part of is damaged.

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, by changing the shape structure of the connecting portion connecting the impact portion located in the front and the tower portion fixed to the vehicle body as previously filed in Korean Patent Application No. 2007-49151 by the applicant of the present application, the impact strength is increased and the impact is increased. In response to this, a bumper reinforcement member has been proposed in which a part of the bumper reinforcement member is appropriately deformed in response to this.

또한, 도 8 및 도 9에서 도시한 바와 같이 스틸재로 단면이 "B"형상으로 중앙 임펙트부가 돌출되도록 완만한 곡면으로 성형되는 구조의 보강부재도 알려진바 있었다.Also, as shown in FIGS. 8 and 9, a reinforcing member having a structure in which a cross-section of a steel material is formed into a gentle curved surface so that a central impact portion protrudes in a “B” shape is also 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, self-stiffness could be improved due to various shapes and structural changes to the bumper reinforcement member. On the other hand, when a strong impact is transmitted through the front impact part by collision in the installation state, the tower part and the side member to which the tower part is mounted are significantly 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 impact is transmitted through the central impact unit, the impact direction is changed in a direction in which both side members are opened, as shown in FIG. 7, and the side chamber is widened, thereby being greatly damaged.

또, 이 사이드 멤버에 마운팅되는 임펙트부도 크게 파손되거나 벌어짐 방향으로 변형된다.In addition, the impact portion mounted on the side member is also largely damaged or deformed in the opening 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 to provide a bumper back beam which is particularly capable of preventing 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 back beam that increases durability and final impact tolerance.

이러한 목적을 달성하기 위해 본 발명은,
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)과 보강재(80) 사이에 양측으로 여유공간(S)이 형성되도록 하는 것에 있어서,
상기 임펙트부(50)는 상기 내부공간(55)의 상부와 하부로 단면이 범퍼측을 향하여 트여지고 상기 임펙트부(50)가 상기 보강재(80)를 범퍼의 전후 방향으로 안착시킬 수 있는 외부공간(56)을 갖도록 성형하고,
상기 보강재(80)의 양쪽 끝단면이 크래쉬박스(91)에 평행하게 성형된 상태로 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 면접촉된 상태로 함께 마운팅 고정되는 것을 특징으로 한다.
여기서 보강재(80)에는 여유공간(S)을 채워지게 하는 리브(81)들이 다수개 설치되어 허용강도를 더 보강하게 된다.In order to achieve this object, the present invention,
An impact portion 50 located in the central portion;
The impact portion 50 of the vehicle back beam 100, which is formed on both sides of the impact portion 50 and is made of a tower portion 60 fixed to the crash box 91 attached to the front end of the side member 90 of the vehicle body The cross section is molded to have inner spaces 55 that open toward the opposite inner side of the bumper, respectively.
In this inner space 55, a reinforcing material 80 is accommodated, but the reinforcing material 80 accommodated in the inner space 55 is molded with a curvature R1 smaller than that of the back beam 100 to thereby increase the inner space 55 and the reinforcing material ( 80) in that the free space (S) is formed on both sides between,
The impact portion 50 is an outer space in which the cross section is opened toward the upper and lower portions of the inner space 55 toward the bumper side, and the impact portion 50 can seat the reinforcement 80 in the front-rear direction of the bumper. Molded to have (56),
Both end faces of the reinforcing material 80 are formed to be parallel to the crash box 91 and extended to the position of the tower portion 60 of the automobile back beam 100 to be mounted in contact with the crash box 91 in surface contact. It is characterized by being fixed.
Here, the reinforcing material 80 is provided with a plurality of ribs 81 to fill the free space (S) to further reinforce the allowable strength.

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그리고, 이 보강재(80)는 폐단면부를 갖도록 성형하여 허용강도를 더 증대시킬 수 있다.
And, the reinforcing material 80 can be molded to have a closed cross-section to further increase the allowable strength.

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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 having a smaller curvature R1 than the backbeam 100 in the inner space 55 of the backbeam 100, the free space S on both sides thereof is provided. Is formed.

따라서, 최종 충격 허용량을 증가시킬 수 있다.
그리고, 자동차 추돌에 의해 충격발생시에 스테이의 변형을 줄여 결과적으로 스테이 충격 흡수부를 강화할 수 있는 것이다. Therefore, it is possible to increase the final impact allowance.
In addition, it is possible to reduce the deformation of the stay in the event of an impact due to an automobile collision and consequently strengthen the stay shock absorber.

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, it is possible to maintain a proper deformation when an impact is applied, and to prevent the impact portion and the side member from being deformed or greatly damaged in the opening direction, thereby increasing the durability and 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 14는 본 발명의 1실시예를 도시한 것으로, 도 10은 백빔에 보강재가 조립된 상태를 보인 사시도.
도 11은 백빔의 내부로 설치된 보강재의 곡률 차이를 보인 설치상태 평면도.
도 12는 본 발명의 백빔이 설치되는 상태를 보인 평면도.
도 13은 본 발명의 보강재를 보인 사시도.
도 14는 본 발명의 조립상태 종단면도.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.
Figure 3 is an understanding view showing a state in which the conventional bumper reinforcement member is deformed together with the side member by collision.
4 is a perspective view of another conventional vehicle bumper.
5 is a cross-sectional view taken along line A-A' in FIG. 4.
6 is an enlarged cross-sectional view showing one end of a conventional bumper reinforcement member.
7 to 9 is a perspective view showing a conventional steel structure.
10 to 14 show one embodiment of the present invention, and FIG. 10 is a perspective view showing a state in which a reinforcing material is assembled to a back beam.
11 is a plan view of the installation state showing a difference in curvature of the reinforcement installed inside the back beam.
12 is a plan view showing a state in which the back beam of the present invention is installed.
13 is a perspective view showing a reinforcing material of the present invention.
Figure 14 is a longitudinal sectional view of the assembled state of the present invention.

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.The present inventor's automobile back beam 100 is molded so as not to bend and is positioned at the front of the vehicle body to absorb and receive the shock, thereby absorbing the impact portion 50 and side members of the vehicle body at both sides of the impact portion 50 It is made of a large tower portion 60 is 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 unit 60.

본 발명의 임펙트부(50)는 본 발명의 제1 실시예로 도시한 도 14에서 도시한 바와 같이 범퍼를 향해 전방으로 트여지는 외부공간(56)과, 그 반대 내측을 향해 트여지는 내부공간(55)을 각각 갖도록 반복되게 성형하게 된다.The impact portion 50 of the present invention, as shown in FIG. 14 shown in the first embodiment of the present invention, the outer space 56 is opened forward toward the bumper, and the inner space is open toward the opposite inner side ( 55) to be repeatedly molded.

그리고, 이 내부공간(55)에는 보강재(80)를 수납하게 된다.Then, the reinforcing material 80 is accommodated in the inner space 55.

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.The reinforcing material 80 is made of steel or aluminum, and a synthetic resin material having excellent strength, so it is made of a relatively small curvature R1 than the back beam 100 without bending in a state located inside the inner space 55, so the reinforcing material ( The center of the 80) is to allow the free space (S) to be formed between the inner space 55 and the reinforcing material 80 on both sides thereof in a state 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 further reinforced with the allowable strength by forming a plurality of ribs 81 to fill the free space S to protrude.

또, 백빔(100)에도 여유공간(S)을 채워지게 하는 리브들이 다수개 돌출되도록 성형하여 허용강도를 더 보강할 수도 있게 된다.In addition, it is also possible to further reinforce the allowable strength by forming a plurality of ribs to fill the free space S in the back beam 100 so as to protrude.

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 reinforcing material 80 are extended to the position of the tower part 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 reinforcing material 80 are in a surface contact state. Each mounting is fixed.

본 발명의 보강재(80)는 도 14에서 도시한 1실시예에서와 같이 상하로 거리를 두고 "B"형상의 폐단면부를 갖도록 성형하는 경우 허용강도가 더 증대된다.The reinforcing material 80 of the present invention further increases the allowable strength when it is molded to have a closed cross-section having a “B” shape at a distance up and down as in the first embodiment shown in FIG. 14.

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 a shape that connects the impact portion 50 and the tower portion 60 to the upper and lower flanges of the vehicle back beam 100 with an inclined portion 70.

또, 도 12에서와 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 FIG. 12, one or more reinforcing bars 88 fixedly connected across both ends of the reinforcing 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 amount of shock absorption is improved and the strength is increased, the weight of the product can be further reduced and 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 reinforcing material 80 may be changed according to the strength required by the bumper reinforcement member. When the required strength is increased, the radius is reduced and the required strength is reduced. If you do, increase the radius.

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 a shape that connects the impact portion 50 and the tower portion 60 to the upper and lower flanges of the vehicle back beam 100 with an inclined portion 70.

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이러한 본 발명의 구성에 의하면, 충격 흡수량이 향상되고 강도를 더 커지게 되므로, 동일 허용 강도에 대해 제품의 무게를 더 줄일 수 있고, 변형을 줄일 수 있는 것이다.According to the configuration of the present invention, since the shock absorption 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.

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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.In addition, the size of the small curvature (R1) of the reinforcing material 80 can be changed according to the strength required by the bumper reinforcement member. When the required strength is increased, the radius is reduced, and when the required strength is decreased, the radius is decreased. Increase.

이와 같이 구성된 본 실시예의 작용을 살펴보면 다음과 같다.Looking at the operation of the present embodiment configured as described above is 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 and 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 portion 50 and the reinforcing material 80 and transmitted to the tower portion 60 and the side member 90 or the crash box 91 attaching it.

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 reinforcement 80 is molded into a small curvature (R1) forming a curved surface gently toward the front side so as to form a free space (S) on both sides of the center to disperse the amount of impact to install the tower portion (60). It is possible to reduce the degree of deformation and breakage of the side member 90.

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, it is possible to prevent the back member from being broken, as well as to break the side member 90, and to increase the final impact allowance, and to maintain proper deformation when an impact is applied.

50 - 임펙트부 55 - 내부공간
56 - 외부공간 60 - 타워부
70 - 경사부 80 - 보강재
81 - 리브 90 - 사이드멤버
91 - 크래쉬박스 100 - 자동차 백빔
R1 - 작은곡률50-Impact section 55-Interior space
56-External Space 60-Tower
70-Slope 80-Reinforcement
81-Rib 90-Side Member
91-Crashbox 100-Car Backbeam
R1-small curvature

Claims (6)

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 폐단면 형상의 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 임펙트부(50)는 상기 내부공간(55)의 상부와 하부로 단면이 범퍼측을 향하여 트여지고 임펙트부(50)가 상기 보강재(80)를 범퍼의 전후방향으로 안착 시킬 수 있는 외부공간(56)을 갖도록 성형하여
상기 보강재(80)는 양쪽 끝단면이 크래쉬박스(91)에 평행하게 성형된 상태로 자동차 백빔(100)의 타워부(60) 위치까지 연장되어 크래쉬박스(91)에 연장된 상태로 함께 마운팅 고정되고,
상기 백빔(100)에는 여유공간(S)을 채워지게 하는 리브들이 다수 개 설치되어 허용강도를 더 보강하는 것을 특징으로 하는 자동차용 범퍼 백빔An impact portion 50 located in the central portion;
The impact portion 50 of the vehicle back beam 100, which is formed on both sides of the impact portion 50 and is made of a tower portion 60 fixed to the crash box 91 attached to the front end of the side member 90 of the vehicle body The cross section is molded to have inner spaces 55 that open toward the opposite inner side of the bumper, respectively.
In this inner space 55, a reinforcing material 80 having a closed cross-section shape is accommodated, but the reinforcing material 80 accommodated in the inner space 55 is formed into a curvature R1 smaller than that of the back beam 100, thereby forming the inner space 55 ) To form a free space (S) on both sides between the impact portion 50 and the reinforcement 80 to form,
The impact part 50 is an outer space where the cross section is opened toward the upper and lower portions of the inner space 55 toward the bumper side, and the impact part 50 can seat the reinforcement 80 in the front-rear direction of the bumper ( 56)
The reinforcing material 80 is extended to the position of the tower portion 60 of the vehicle back beam 100 in a state where both end faces are formed parallel to the crash box 91 and fixed to the crash box 91 in an extended state. Become,
The back beam 100 is provided with a plurality of ribs to fill the free space (S), the bumper back beam for automobiles, characterized in that to further enhance the allowable strength 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
KR1020110046971A 2011-05-18 2011-05-18 a Bumper back beam for vehicle KR101327567B1 (en)

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KR1020110046971A KR101327567B1 (en) 2011-05-18 2011-05-18 a Bumper back beam for vehicle
CN201280024125.7A CN103582585B (en) 2011-05-18 2012-05-17 Bumper back beam for vehicle
US14/118,060 US9114767B2 (en) 2011-05-18 2012-05-17 Bumper back beam for vehicle
PCT/KR2012/003915 WO2012157986A2 (en) 2011-05-18 2012-05-17 Bumper back beam for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101495885B1 (en) * 2012-06-13 2015-03-02 정운덕 a Bumper back beam for vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980044140A (en) * 1996-12-05 1998-09-05 박병재 Bumper structures for vehicles
KR20080010639A (en) * 2006-07-27 2008-01-31 주식회사 아펙스 Bumper reinforcement structure for vehicle
KR20090030157A (en) * 2007-09-19 2009-03-24 성준엽 Bumper reinforcement structrue for vehicle
KR20100046560A (en) * 2008-10-27 2010-05-07 현대자동차주식회사 Apparatus for absorbing an impact on the bumper of a vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980044140A (en) * 1996-12-05 1998-09-05 박병재 Bumper structures for vehicles
KR20080010639A (en) * 2006-07-27 2008-01-31 주식회사 아펙스 Bumper reinforcement structure for vehicle
KR20090030157A (en) * 2007-09-19 2009-03-24 성준엽 Bumper reinforcement structrue for vehicle
KR20100046560A (en) * 2008-10-27 2010-05-07 현대자동차주식회사 Apparatus for absorbing an impact on the bumper of a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101495885B1 (en) * 2012-06-13 2015-03-02 정운덕 a Bumper back beam for vehicle

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