KR20090029950A - Bumper beam and manufacturing method thereof for a vehicle - Google Patents

Bumper beam and manufacturing method thereof for a vehicle Download PDF

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Publication number
KR20090029950A
KR20090029950A KR1020070095156A KR20070095156A KR20090029950A KR 20090029950 A KR20090029950 A KR 20090029950A KR 1020070095156 A KR1020070095156 A KR 1020070095156A KR 20070095156 A KR20070095156 A KR 20070095156A KR 20090029950 A KR20090029950 A KR 20090029950A
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South Korea
Prior art keywords
bumper beam
fastening
rail
lower support
fastening hole
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KR1020070095156A
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Korean (ko)
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KR101422626B1 (en
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박성욱
공태윤
심호창
소원섭
김재용
차용길
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한라공조주식회사
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Priority to KR1020070095156A priority Critical patent/KR101422626B1/en
Publication of KR20090029950A publication Critical patent/KR20090029950A/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
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • 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

Abstract

A bumper beam for vehicles is provided to improve the rigidity and buffering effect but reduce the weight of bumper by using the plastic material of the steel material together. A bumper beam for vehicles comprises: a font part(10) having the predetermined height in the vertical direction; and top and bottom support parts(12,13) extended to the top end portion of the front part from the bottom. The front surface and top and lower support parts are made of the plastic material. A union projection(11) is protruded on the backside surface of the front part. A rail section(20) made of the steel material is mounted on a rearward side of the top and bottom support part.

Description

자동차용 범퍼빔 및 제조방법{BUMPER BEAM AND MANUFACTURING METHOD THEREOF FOR A VEHICLE}BUMPER BEAM AND MANUFACTURING METHOD THEREOF FOR A VEHICLE}

본 발명은 자동차용 범퍼빔 및 제조방법에 관한 것으로, 더욱 상세하게는 스틸(steel)재와 플라스틱(plastic)재가 혼용된 범퍼빔을 형성함은 물론 스틸(steel)재를 관통한 플라스틱(plastic)재의 단부가 변형됨으로서 플라스틱(plastic)재와 스틸(steel)재 사이에 고정구조가 간단해짐과 동시에 견고한 고정이 이루어지도록 한 자동차용 범퍼빔 및 제조방법에 관한 것이다.The present invention relates to a bumper beam for automobiles and a manufacturing method, and more particularly, to form a bumper beam in which a steel material and a plastic material are mixed, as well as a plastic penetrating the steel material. The present invention relates to a bumper beam for automobiles and a method for manufacturing the same, which simplify the fixing structure between the plastic material and the steel material by deforming the end portion of the ash, and at the same time, firmly fixing the material.

일반적으로 자동차에는 충돌 시 발생되는 충격력을 흡수하여 차량 및 탑승자 등을 보호하기 위해 차체의 전방 및 후방에 범퍼가 장착된다.In general, bumpers are mounted on the front and rear of the vehicle body to absorb impact force generated during a collision to protect the vehicle and the occupant.

상기 범퍼는 외면을 이루는 범퍼커버와, 상기 범퍼커버를 통해 충격이 전달되는 범퍼빔으로 구성되는데, 상기 범퍼빔은 자동차에 전달되는 충격을 완충하는 것으로 충격력이 클 경우에는 그 충격력을 효과적으로 완충하도록 변형되고, 충격력이 적을 경우에는 변형되지 않거나 변형량을 최소화하도록 하는 역할을 한다.The bumper includes a bumper cover forming an outer surface and a bumper beam to which an impact is transmitted through the bumper cover. The bumper beam buffers an impact transmitted to an automobile. When the impact force is large, the bumper beam is deformed to effectively buffer the impact force. If the impact force is small, it does not deform or serves to minimize the amount of deformation.

도 1은 종래의 범퍼빔(100)의 장착을 나타낸 것으로, 도시된 바와 같이 범퍼빔(100)은 차체의 사이드 멤버(110)에 고정된 캐리어(120)의 전면에 장착된다.1 illustrates mounting of a conventional bumper beam 100, and as shown, the bumper beam 100 is mounted on a front surface of a carrier 120 fixed to a side member 110 of a vehicle body.

상기 범퍼빔(100)은 전술한 바와 같이 충격의 완충 역할을 하는 것으로, 수직방향으로 소정의 높이를 갖는 전면부(110)와, 상기 전면부(110)의 상단부와 하단부로부터 연장되어 상기 전면부(110)의 후방으로 절곡된 상·하측지지부(112, 113)로 되어 자동차의 폭방향으로 길게 형성된다.The bumper beam 100 serves as a shock absorber as described above, and extends from the upper end and the lower end of the front part 110 having a predetermined height in the vertical direction and the front part. It becomes upper and lower support parts 112 and 113 bent backward of 110, and is formed long in the width direction of the vehicle.

상기 전면부(110)와 상·하측지지부(112, 113)는 충격으로부터 차량 및 탑승자의 보호를 위해 소정의 강성을 갖도록 스틸(steel)재로 형성되는데, 상기 범퍼빔(100)이 스틸(steel)재로 이루어짐에 따라 소정의 강성이 확보된다는 장점이 있으나, 중량이 커져 자동차의 중량 및 연비에 악영향을 끼친다는 문제점이 있으며, 스틸(steel)재의 특성상 완충력이 떨어져 충격력이 그대로 탑승자에게 전달된다는 문제점이 있었다.The front portion 110 and the upper and lower support portions 112 and 113 are formed of a steel material to have a predetermined rigidity for protecting the vehicle and the occupant from impact, and the bumper beam 100 is made of steel. There is a problem that the predetermined rigidity is secured by the ash, but there is a problem that the weight is increased, which adversely affects the weight and fuel economy of the car, and the impact force is transmitted to the occupant as it is shock-resistant due to the characteristics of the steel (steel) material. .

이와 같은 문제점을 극복하고자 플라스틱(plastic)재로 이루어진 범퍼빔이 개시되었다. 상기 범퍼빔이 플라스틱(plastic)재로 이루어짐에 따라 범퍼빔의 경량화 및 자동차의 경량화는 가능하나 충격을 완충할만한 강성이 확보되지 않아 완충 역할을 하는데 적합하지 못하다는 문제점이 발생하였다.In order to overcome such a problem, a bumper beam made of a plastic material has been disclosed. As the bumper beam is made of a plastic material, it is possible to reduce the weight of the bumper beam and to reduce the weight of the vehicle, but it is not suitable to play a buffer role because the rigidity to cushion the shock is not secured.

본 발명은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 충격의 완충을 위해 소정의 강성이 보장됨은 물론 중량이 감소된 자동차용 범퍼빔 및 제조방법을 제공하는 것이다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a bumper beam for automobiles and a method of manufacturing a reduced weight as well as a certain stiffness for shock absorbing.

본 발명은 또 다른 목적은 전면부로부터 후방으로 돌출되어 레일부의 체결공에 삽입된 체결돌기의 단부가 변형됨으로써 플라스틱(plastic)재의 전면부 및 상·하측지지부와 스틸(steel)재의 레일부 사이에 결합구조가 단순화됨과 동시에, 견고한 결합이 가능한 자동차용 범퍼빔 및 제조방법을 제공하는 것이다.Another object of the present invention is to protrude rearward from the front part, so that the end of the fastening protrusion inserted into the fastening hole of the rail part is deformed so that the front part of the plastic material and the upper and lower support parts and the rail part of the steel material. To provide a bumper beam for automobiles and a manufacturing method capable of a rigid coupling, while at the same time the coupling structure is simplified.

본 발명의 자동차용 범퍼빔은 수직방향으로 소정의 높이를 갖는 전면부와, 상기 전면부의 상단부와 하단부로부터 상기 전면부의 후방으로 연장된 상·하측지지부로 이루어져 자동차의 폭방향으로 길게 형성된 자동차용 범퍼빔에 있어서,The bumper beam for automobiles of the present invention includes a front part having a predetermined height in a vertical direction, and an upper and lower support part extending rearward from the upper part and the lower part of the front part to the rear of the front part, and being formed in the width direction of the automobile. In the beam,

상기 전면부 및 상·하측지지부는 플라스틱(plastic)재로 이루어져 상기 전면부의 후면에는 체결돌기가 돌출 형성되고, 상기 전면부 및 상·하측지지부의 후방에는 상기 체결돌기가 삽입되도록 체결공이 관통 형성된 스틸(steel)재의 레일부가 장착된 것을 특징으로 한다.The front part and the upper and lower support parts are made of plastic, and fastening protrusions are formed on the rear surface of the front part, and the fastening holes penetrate through the fastening protrusions at the rear of the front part and the upper and lower support parts. It is characterized in that the rail portion of the steel) material is mounted.

또한, 상기 체결공에 삽입된 상기 체결돌기의 단부는 상기 체결공 보다 큰 단면적을 갖도록 변형된 것을 특징으로 한다.In addition, the end of the fastening protrusion inserted into the fastening hole is characterized in that it is modified to have a larger cross-sectional area than the fastening hole.

또한, 상기 체결돌기의 단부에는 걸림부가 돌출 형성되며, 상기 걸림부는 상기 체결공의 후면에 걸려 고정되는 것을 특징으로 한다.In addition, a locking portion protrudes from an end of the locking projection, and the locking portion is fixed to the rear of the fastening hole.

아울러, 상기 전면부의 수직방향 중앙부는 전방으로 돌출 형성된 것을 특징으로 한다.In addition, the vertical portion in the vertical direction of the front portion is characterized in that protruded forward.

또한, 상기 상·하측지지부의 단부에는 수직방향으로 상·하측 플랜지부가 각각 연장 형성되며, 상기 레일부에는 상기 상·하측 플랜지부와 대응되는 상·하측 보강부가 각각 형성된 것을 특징으로 한다.In addition, the upper and lower flanges extend in the vertical direction at the ends of the upper and lower support portions, respectively, and the upper and lower reinforcement portions corresponding to the upper and lower flange portions are respectively formed in the rail portion.

본 발명의 자동차용 범퍼빔의 제조방법은 수직방향으로 소정의 높이를 갖고 후방으로 다수의 체결돌기가 돌출된 전면부와 상기 전면부의 상단부와 하단부로부터 후방으로 각각 연장된 상·하측지지부로 구성되어 자동차의 폭방향으로 길게 형성되도록 플라스틱(plastic)재의 커버부를 사출하고, 상기 커버부와 같은 형상으로 이루어져 상기 커버부의 체결돌기가 삽입되도록 다수의 체결공이 구성된 스틸(steel)재의 레일부를 롤포밍(roll forming) 또는 프레싱(pressing)하여 제작하는 예비단계(S1); 상기 커버부의 체결돌기가 상기 레일부 상의 체결공에 삽입되도록 하는 조립단계(S2); 및 상기 체결공에 삽입된 상기 체결돌기의 단부를 가열용융하여 상기 커버부와 레일부를 결합하는 결합단계(S3);를 포함하여 이루어지는 것ㅇ르 특징으로 한다.The manufacturing method of the bumper beam for automobiles of the present invention is composed of a front part having a predetermined height in the vertical direction and a plurality of fastening protrusions protruding rearward and upper and lower support parts extending rearward from the upper and lower ends of the front part, respectively. Roll-forming a rail part of a steel material, in which a cover part of a plastic material is formed to be elongated in the width direction of the vehicle, and is formed in the same shape as the cover part, and a plurality of fastening holes are formed to insert the fastening protrusion of the cover part. preliminary step (S1) of forming or pressing (pressing) to produce; An assembly step (S2) to allow the fastening protrusion of the cover part to be inserted into the fastening hole on the rail part; And a joining step (S3) of joining the cover part and the rail part by heating and melting the end of the fastening protrusion inserted into the fastening hole.

상술한 바와 같이 본 발명에 의하면, 스틸(steel)재와 플라스틱(plastic)재가 혼용되어 이루어짐으로써 범퍼빔의 중량은 감소되는 반면, 강성 및 완충효과가 보다 향상된다는 작용효과가 있다.As described above, according to the present invention, since the weight of the bumper beam is reduced by mixing steel and plastic, the rigidity and cushioning effect are improved.

또한, 플라스틱(plastic)재의 전면부로부터 돌출된 체결돌기가 스틸(steel)재의 레일부에 관통 형성된 체결공에 삽입되어 고정됨으로서 스틸(steel)재와 플라스틱(plastic)재 사이에 고정구조가 단순화됨과 동시에, 견고한 결합이 이루어진다는 특유의 작용효과가 있다.In addition, the fastening protrusion protruding from the front part of the plastic material is inserted into and fixed to the fastening hole formed through the rail part of the steel material, thereby simplifying the fixing structure between the steel material and the plastic material. At the same time, there is a peculiar working effect that a firm coupling is achieved.

또한, 스틸(steel)재와 플라스틱(plastic)재의 분리가 손쉬워져 자원의 재활용이 용이하다는 장점이 있다.In addition, the separation of the steel (steel) and the plastic (plastic) has an advantage that it is easy to recycle resources.

이하, 상기한 바와 같은 구성을 가지는 본 발명에 의한 자동차용 범퍼빔 및 제조방법에 대해서 첨부된 도면을 참고하여 상세하게 설명한다.Hereinafter, a bumper beam for a vehicle and a manufacturing method according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

도 3은 본 발명의 자동차용 범퍼빔의 전면을 나타낸 사시도이고, 도 4는 본 발명의 자동차용 범퍼빔의 후면을 나타낸 사시도이며, 도 5는 본 발명의 자동차용 범퍼빔을 나타낸 분해사시도이고, 도 6은 본 발명의 자동차용 범퍼빔의 단면을 나타낸 단면도이며, 도 7은 본 발명의 자동차용 범퍼빔의 다른 실시예를 나타낸 분해 단면도이고, 도 8은 본 발명의 자동차용 범퍼빔의 제작을 나타낸 순서도이다.Figure 3 is a perspective view showing the front of the bumper beam for automobiles of the present invention, Figure 4 is a perspective view showing the rear of the bumper beam for cars of the present invention, Figure 5 is an exploded perspective view showing the bumper beam for cars of the present invention, 6 is a cross-sectional view showing a cross section of the bumper beam for automobiles of the present invention, FIG. 7 is an exploded cross-sectional view showing another embodiment of the bumper beam for automobiles of the present invention, and FIG. The flowchart shown.

도 3 내지 도 6은 본 발명의 범퍼빔을 나타낸 도면으로서, 도시된 바와 같이 본 발명의 범퍼빔은 수직방향으로 소정의 높이를 갖는 전면부(10)와, 상기 전면부(10)의 상단부로부터 상기 전면부(10)의 후방으로 연장된 상측지지부(12), 및 상기 전면부(10)의 하단부로부터 상기 전면부(10)의 후방으로 연장된 하측지지부(13)로 이루어져 자동차의 폭방향으로 길게 형성되며, 상기 전면부(10)의 후면에는 체결돌기(11)가 돌출 형성된다.3 to 6 are views showing the bumper beam of the present invention, as shown in the bumper beam of the present invention, which has a predetermined height in a vertical direction, and from an upper end of the front part 10. The upper support portion 12 extending to the rear of the front portion 10, and the lower support portion 13 extending rearward of the front portion 10 from the lower end of the front portion 10 in the width direction of the vehicle It is formed long, the fastening protrusion 11 is formed protruding from the rear of the front portion (10).

상기 전면부(10) 및 상·하측지지부(12, 13)의 후방에는 상기 체결돌기(11)가 삽입되도록 체결공(21)이 형성된 레일부(20)가 배치되는데, 상기 레일부(20)는 상기 전면부(10) 및 상·하측지지부(12, 13)의 후면에 밀착되도록 상기 전면부(10) 및 상·하측지지부(12, 13)와 닮은꼴로 이루어진다.At the rear of the front part 10 and the upper and lower support parts 12 and 13, a rail part 20 having a fastening hole 21 is inserted to insert the fastening protrusion 11, and the rail part 20 is provided. Is made of a shape similar to the front portion 10 and the upper and lower support portions 12, 13 so as to be in close contact with the rear of the front portion 10 and the upper and lower support portions (12, 13).

상기 전면부(10)와 상기 전면부(10)의 상단부 및 하단부로부터 후방으로 연장된 상기 상·하측지지부(12, 13)는 하중의 절감과 제작의 용이성을 감안하여 플라스틱(plastic)재로 이루어지고, 상기 레일부(20)는 상기 플라스틱(plastic)재로 이루어진 전면부(10)와 상·하측지지부(12, 13)의 부족한 강성의 보강을 위해 스틸(steel)재로 제작된다.The upper and lower support parts 12 and 13 extending rearward from the upper end and the lower end of the front part 10 and the front part 10 are made of a plastic material in consideration of reduction of load and ease of manufacture. The rail part 20 is made of steel to reinforce the insufficient rigidity of the front part 10 and the upper and lower support parts 12 and 13 made of the plastic material.

상기 레일부(20)에 형성된 체결공(21)에는 상기 전면부(10)로부터 후방으로 돌출된 체결돌기(11)가 삽입되어 고정되는데, 도 6a와 같이 상기 체결공(21)에 삽입된 상기 체결돌기(11)의 단부는 도 6b와 같이 상기 체결공(21)의 단면적 보다 더 큰 단면적을 갖도록 변형된다. 이와 같이 상기 체결공(21)에 삽입된 상기 체결돌기(11)의 단부가 상기 체결공(21)의 단부에 비해 보다 큰 단면적을 갖도록 변형됨으로써 재질이 서로 다른 스틸(steel)재의 레일부(20)와 플라스틱(plastic)재의 전 면부(10)가 서로 견고히 결합된다. 여기서 상기 체결돌기(11)의 단부는 다양한 방법에 의해 변형될 수 있으나, 열에 의해 용융되어 변형되는 것이 바람직하다.A fastening protrusion 11 protruding rearward from the front portion 10 is inserted into and fastened to the fastening hole 21 formed in the rail part 20. As shown in FIG. 6A, the fastening hole 21 is inserted into the fastening hole 21. The end of the fastening protrusion 11 is deformed to have a larger cross-sectional area than the cross-sectional area of the fastening hole 21 as shown in Figure 6b. In this way, the ends of the fastening protrusions 11 inserted into the fastening holes 21 are deformed to have a larger cross-sectional area than the ends of the fastening holes 21, so that the rail portions 20 of different steel materials are formed. ) And the front surface portion 10 of the plastic (plastic) is firmly coupled to each other. Here, the ends of the fastening protrusions 11 may be deformed by various methods, but are preferably melted and deformed by heat.

전술한 바와 같이 스틸(steel)재와 플라스틱(plastic)재가 혼용된 본 발명의 범퍼빔에 의해 상기 범퍼빔에 전달되는 충격력이 클 경우에는 상기 충격에 의해 범퍼빔 자체가 변형되어 효과적인 완충이 이루어지고, 충격력이 적을 경우에는 변형되지 않거나 변형량이 최소화 되어 자동차 및 탑승자가 보호된다는 장점이 있다.As described above, when the impact force transmitted to the bumper beam by the bumper beam of the present invention in which steel and plastic materials are mixed is large, the bumper beam itself is deformed by the impact, thereby effectively buffering the beam. In case of low impact force, the vehicle is not deformed or the amount of deformation is minimized to protect the vehicle and the occupant.

한편, 상기 상측지지부(12)의 단부와 하측지지부(13)의 단부에는 각각 상측 플랜지부(12a)와 하측 플랜지부(13a)가 연장 형성되는데, 상기 상측 플랜지부(12a) 상기 상측 플랜지부(12a)는 상측으로 연장 형성되고, 하측 플랜지부(13a)는 하측으로 연장 형성됨이 바람직하다.On the other hand, the upper flange portion 12a and the lower flange portion 13a are formed at the end portions of the upper support portion 12 and the lower support portion 13, respectively, the upper flange portion 12a and the upper flange portion ( 12a) is formed to extend upward, and the lower flange portion 13a is preferably extended downward.

이에 덧붙여 상기 상·하측 플랜지부(12a, 13a)와 대응되도록 상기 레일부(20)에도 상·하측 보강부(22, 23)가 각각 형성된다.In addition, upper and lower reinforcement portions 22 and 23 are formed in the rail portion 20 so as to correspond to the upper and lower flange portions 12a and 13a, respectively.

이처럼 상기 상·하측지지부(12, 13)의 단부에 상기 상·하측 플랜지부(12a, 13a)가 연장 형성됨으로써 플라스틱(plastic)재의 부족한 강성이 보강되며, 상기 상하·측지지부(12, 13)와 대응되도록 상기 레일부(20)에 상·하측 보강부(22, 23)가 형성됨으로써 플라스틱(plastic)재와 스틸(steel)재 사이에 접합면이 증가하여 충격의 전달 및 완충력이 보다 향상된다는 장점이 있다.As the upper and lower flange portions 12a and 13a are formed at the end portions of the upper and lower support portions 12 and 13, the insufficient rigidity of the plastic material is reinforced, and the upper and lower support portions 12 and 13 are formed. The upper and lower reinforcement parts 22 and 23 are formed in the rail part 20 so as to correspond to the surface of the rail part 20, thereby increasing the joint surface between the plastic material and the steel material, thereby improving shock transmission and buffering force. There is an advantage.

도 7은 본 발명의 다른 실시예를 나타낸 것으로, 도시된 바와 같이 범퍼빔은 수직방향으로 소정의 높이를 갖는 전면부(10)와, 상기 전면부(10)의 상단부로부터 상기 전면부(10)의 후방으로 연장된 상측지지부(12), 및 상기 전면부(10)의 하단부로부터 상기 전면부(10)의 후방으로 연장된 하측지지부(13)로 이루어져 자동차의 폭방향으로 길게 형성되며, 상기 전면부(10)의 후면에는 단부에 걸림부(11a)가 형성된 체결돌기(11)가 돌출 형성된다.FIG. 7 illustrates another embodiment of the present invention, in which the bumper beam has a front portion 10 having a predetermined height in a vertical direction, and the front portion 10 from an upper end portion of the front portion 10. The upper support portion 12 extending in the rear of the, and the lower support portion 13 extending in the rear of the front portion 10 from the lower end of the front portion 10 is formed long in the width direction of the vehicle, the front A fastening protrusion 11 having a locking portion 11a formed at an end thereof protrudes from a rear surface of the portion 10.

상기 전면부(10) 및 상·하측지지부(12, 13)의 후방에는 상기 체결돌기(11)가 삽입되도록 체결공(21)이 형성된 레일부(20)가 배치된다. 이때 상기 레일부(20)는 상기 전면부(10) 및 상·하측지지부(12, 13)의 후면에 밀착되도록 상기 전면부(10) 및 상·하측지지부(12, 13)와 닮은꼴로 이루어진다.At the rear of the front part 10 and the upper and lower support parts 12 and 13, a rail part 20 having a fastening hole 21 is disposed to insert the fastening protrusion 11. At this time, the rail portion 20 is formed in a shape similar to the front portion 10 and the upper and lower support portions 12 and 13 to be in close contact with the rear surface of the front portion 10 and the upper and lower support portions 12 and 13. .

상기 전면부(10)와 상기 전면부(10)의 상단부 및 하단부로부터 후방으로 연장된 상기 상·하측지지부(12, 13)는 하중의 절감과 제작의 용이성을 감안하여 플라스틱(plastic)재로 이루어지고, 상기 레일부(20)는 상기 플라스틱(plastic)재로 이루어진 전면부(10)와 상·하측지지부(12, 13)의 부족한 강성의 보강을 위해 스틸(steel)재로 제작된다.The upper and lower support parts 12 and 13 extending rearward from the upper end and the lower end of the front part 10 and the front part 10 are made of a plastic material in consideration of reduction of load and ease of manufacture. The rail part 20 is made of steel to reinforce the insufficient rigidity of the front part 10 and the upper and lower support parts 12 and 13 made of the plastic material.

상기 레일부(20)에 형성된 체결공(21)에는 상기 전면부(10)의 후면에 돌출된 체결돌기(11)가 삽입되는데, 상기 체결돌기(11)가 상기 체결공(21)에 삽입됨에 따라 상기 체결돌기(11)의 단부에 돌출된 걸림부(11a)가 상기 레일부(20)의 후면에 고정됨으로서 재질이 서로 다른 스틸(steel)재의 레일부(20)와 플라스틱(plastic)재의 전면부(10)가 견고히 결합된다.In the fastening hole 21 formed in the rail part 20, a fastening protrusion 11 protruding from the rear side of the front part 10 is inserted, and the fastening protrusion 11 is inserted into the fastening hole 21. Accordingly, the locking portion 11a protruding from the end of the fastening protrusion 11 is fixed to the rear surface of the rail portion 20 so that the rail portion 20 of the steel material and the front surface of the plastic material are different from each other. Part 10 is firmly coupled.

이에 덧붙여 도면에서 참조되는 바와 같이 상기 상·하측 보강부(22, 23)의 단부에는 상기 상·하측 플랜지부(12a, 13a)로부터 연장된 플라스틱재가 덧씌워져 오버몰드(over-molded) 될 수 있다.In addition, as illustrated in the drawings, ends of the upper and lower reinforcement parts 22 and 23 may be over-molded by a plastic material extending from the upper and lower flange parts 12a and 13a. .

전술한 바와 같이 스틸(steel)재와 플라스틱(plastic)재가 혼용된 본 발명의 범퍼빔에 의해 상기 범퍼빔에 전달되는 충격력이 클 경우에는 상기 충격에 의해 범퍼빔 자체가 변형되어 효과적인 완충이 이루어지고, 충격력이 적을 경우에는 변형되지 않거나 변형량이 최소화 되어 자동차 및 탑승자가 보호된다는 장점이 있다.As described above, when the impact force transmitted to the bumper beam by the bumper beam of the present invention in which steel and plastic materials are mixed is large, the bumper beam itself is deformed by the impact, thereby effectively buffering the beam. In case of low impact force, the vehicle is not deformed or the amount of deformation is minimized to protect the vehicle and the occupant.

이하 나머지 구성은 상술한 실시예와 같으므로 생략한다.The rest of the configuration is omitted as it is the same as the above-described embodiment.

도 8은 본 발명의 자동차용 범퍼빔의 제조방법을 나타낸 것으로, 본 발명의 범퍼빔 제조방법은 플라스틱(plastic)재의 커버부(10, 123, 13)와 스틸(steel)재의 레일부(20)를 각각 사출과, 롤포밍(roll forming) 또는 프레싱(pressing)하여 제작하는 예비단계(S1)와, 상기 커버부(10, 12, 13)에 형성된 체결돌기(11)가 상기 레일부(20)의 체결공(21)에 삽입되도록 하는 조립단계(S2), 그리고 상기 체결공(21)에 삽입된 체결돌기(11)의 단부를 가열용융하여 상기 커버부(10, 12, 13)와 레일부(20)를 결합 하는 결합단계(S3)로 이루어진다.8 illustrates a method for manufacturing a bumper beam for automobiles according to the present invention. The method for manufacturing a bumper beam according to the present invention includes a cover part 10, 123, 13 of plastic material and a rail part 20 of steel material. The preliminary step (S1) for producing the injection, roll forming (roll forming) or pressing (pressing) respectively, and the fastening protrusions 11 formed on the cover (10, 12, 13) is the rail unit 20 Assembly step (S2) to be inserted into the fastening hole 21 of the, and the end of the fastening protrusion 11 inserted into the fastening hole 21 by heat melting the cover portion (10, 12, 13) and the rail portion Combining step (20) is made of a coupling step (S3).

상기 커버부(10, 12, 13)는 전술한 바와 같이 수직방향으로 소정의 높이를 갖고 후방으로 다수의 체결돌기(11)가 돌출된 전면부(10)와 상기 전면부(10)의 상단부와 하단부로부터 후방으로 각각 연장된 상·하측지지부(12, 13)로 구성되어 자동차의 폭방향으로 길게 형성되며, 상기 레일부(20)는 상기 커버부(10, 12, 13)와 동일한 형상을 가지며 상기 체결돌기(11)가 삽입되도록 다수의 체결공(21)이 형성 된다.As described above, the cover parts 10, 12, and 13 have a predetermined height in the vertical direction, and a front part 10 having a plurality of fastening protrusions 11 protruding rearward and an upper end part of the front part 10. Consists of the upper and lower support portions 12 and 13 extending rearward from the lower end, respectively, and are formed to be long in the width direction of the vehicle, and the rail portion 20 has the same shape as the cover portions 10, 12 and 13. A plurality of fastening holes 21 are formed to insert the fastening protrusions 11.

이렇게 형성된 상기 커버부(10, 12, 13)와 레일부(20)는 서로 전후방으로 배치되어 상기 체결돌기(11)가 체결공(21) 삽입되도록 조립된다. 이후 상기 체결공(21)에 삽입된 상기 체결돌기(11)의 단부는 가열용융된다.The cover portions 10, 12, 13 and the rail portion 20 formed as described above are arranged in front and rear of each other so that the fastening protrusion 11 is assembled to insert the fastening hole 21. After that, the end of the fastening protrusion 11 inserted into the fastening hole 21 is melted by heating.

이처럼 상기 커버부(10, 12, 13)의 체결돌기(11)가 레일부(20)의 체결공(21)에 삽입된 후 단부가 가열용융되어 변형됨으로써 재질이 서로 다른 상기 커버부(10, 12, 13)와 레일부(20)는 견고하게 결합된다. 이때 상기 체결돌기(11)의 단부는 상기 체결공(21)의 단면적 보다 더 큰 단면적을 갖도록 변형됨이 바람직하다.As described above, the fastening protrusions 11 of the cover parts 10, 12, and 13 are inserted into the fastening holes 21 of the rail part 20, and the ends thereof are melted and deformed by heating. 12 and 13 and the rail unit 20 is firmly coupled. At this time, the end of the fastening protrusion 11 is preferably modified to have a larger cross-sectional area than the cross-sectional area of the fastening hole 21.

본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. 따라서 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 만족하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not satisfy all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be variations and variations.

도 1은 종래의 자동차용 범퍼빔의 장착을 나타낸 분해사시도.1 is an exploded perspective view showing the mounting of a conventional bumper beam for a vehicle.

도 2는 종래의 자동차용 범퍼빔의 단면을 나타내 단면도.Figure 2 is a cross-sectional view showing a conventional bumper beam for automobiles.

도 3은 본 발명의 자동차용 범퍼빔의 전면을 나타낸 사시도.Figure 3 is a perspective view showing the front of the bumper beam for automobiles of the present invention.

도 4는 본 발명의 자동차용 범퍼빔의 후면을 나타낸 사시도.Figure 4 is a perspective view showing the rear of the bumper beam for automobiles of the present invention.

도 5는 본 발명의 자동차용 범퍼빔을 나타낸 분해사시도.Figure 5 is an exploded perspective view showing a bumper beam for automobiles of the present invention.

도 6은 본 발명의 자동차용 범퍼빔의 단면을 나타낸 단면도.Figure 6 is a cross-sectional view showing a cross section of the bumper beam for automobiles of the present invention.

도 7은 본 발명의 자동차용 범퍼빔의 다른 실시예를 나타낸 분해 단면도.Figure 7 is an exploded cross-sectional view showing another embodiment of the bumper beam for automobiles of the present invention.

도 8은 본 발명의 자동차용 범퍼빔의 제작을 나타낸 순서도.8 is a flow chart showing the manufacturing of the bumper beam for automobiles of the present invention.

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

10: 전면부 11: 체결돌기10: Front part 11: fastening protrusion

11a: 걸림부 12: 상측지지부11a: locking portion 12: upper support portion

12a: 상측 플랜지부 13: 하측지지부12a: upper flange portion 13: lower support portion

13a: 하측 플랜지부13a: lower flange

20: 레일부 21: 체결공20: rail 21: fastening hole

22: 상측 보강부 23: 하측 보강부22: upper reinforcement 23: lower reinforcement

Claims (6)

수직방향으로 소정의 높이를 갖는 전면부(10)와, 상기 전면부(10)의 상단부와 하단부로부터 상기 전면부(10)의 후방으로 연장된 상·하측지지부(12, 13)로 이루어져 자동차의 폭방향으로 길게 형성된 자동차용 범퍼빔에 있어서,The front part 10 having a predetermined height in the vertical direction, and the upper and lower support parts 12, 13 extending from the upper end and the lower end of the front part 10 to the rear of the front part 10, In the bumper beam for automobiles formed long in the width direction, 상기 전면부(10) 및 상·하측지지부(12, 13)는 플라스틱(plastic)재로 이루어져 상기 전면부(10)의 후면에는 체결돌기(11)가 돌출 형성되고, 상기 전면부(10) 및 상·하측지지부(12, 13)의 후방에는 상기 체결돌기(11)가 삽입되도록 체결공(21)이 관통 형성된 스틸(steel)재의 레일부(20)가 장착된 것을 특징으로 하는 자동차용 범퍼빔.The front portion 10 and the upper and lower support portions 12 and 13 are made of a plastic material, and a fastening protrusion 11 protrudes from the rear surface of the front portion 10, and the front portion 10 and the upper portion. Bumper beam for automobiles, characterized in that the rail support portion 20 of the steel material is formed in the rear of the lower support portion (12, 13) so that the fastening hole (21) is inserted so that the fastening protrusion (11) is inserted. 제 1항에 있어서,The method of claim 1, 상기 체결공(21)에 삽입된 상기 체결돌기(11)의 단부는 상기 체결공(21) 보다 큰 단면적을 갖도록 변형된 것을 특징으로 하는 자동차용 범퍼빔.An end portion of the fastening protrusion 11 inserted into the fastening hole 21 is modified to have a larger cross-sectional area than the fastening hole 21. 제 1항에 있어서,The method of claim 1, 상기 체결돌기(11)의 단부에는 걸림부(11a)가 돌출 형성되며, 상기 걸림부(11a)는 상기 체결공(21)의 후면에 걸려 고정되는 것을 특징으로 하는 자동차용 범퍼빔.The end of the fastening protrusion (11) is a locking portion (11a) is formed protruding, and the locking portion (11a) is fixed to the rear of the fastening hole 21, bumper beam for automobiles. 제 1항에 있어서,The method of claim 1, 상기 상·하측지지부(12, 13)의 단부에는 수직방향으로 상·하측 플랜지부(12a. 13a)가 각각 연장 형성된 것을 특징으로 하는 자동차용 범퍼빔.A bumper beam for automobiles, characterized in that upper and lower flange portions (12a. 13a) extend in vertical directions at ends of the upper and lower support portions (12, 13), respectively. 제 2항에 있어서,The method of claim 2, 상기 레일부(20)에는 상기 상·하측 플랜지부(12, 13)와 대응되는 상·하측 보강부(22, 23)가 각각 형성된 것을 특징으로 하는 자동차용 범퍼빔.Bumper beams for cars, characterized in that the rail portion 20 is formed with upper and lower reinforcement portions 22 and 23 corresponding to the upper and lower flange portions 12 and 13, respectively. 수직방향으로 소정의 높이를 갖고 후방으로 다수의 체결돌기(11)가 돌출된 전면부(10)와 상기 전면부(10)의 상단부와 하단부로부터 후방으로 각각 연장된 상·하측지지부(12, 13)로 구성되어 자동차의 폭방향으로 길게 형성되도록 플라스틱재의 커버부(10, 12, 13)를 사출하고, 상기 커버부(10, 12, 13)와 같은 형상으로 이루어져 상기 커버부(10, 12, 13)의 체결돌기(11)가 삽입되도록 다수의 체결공(21)이 구성된 스틸재의 레일부(20)를 롤포밍(roll forming) 또는 프레싱(pressing)하여 제작하는 예비단계(S1);A front portion 10 having a predetermined height in a vertical direction and protruding a plurality of fastening protrusions 11 rearward, and upper and lower support portions 12 and 13 extending rearwardly from upper and lower ends of the front portion 10, respectively. And the cover parts 10, 12 and 13 made of plastic material are formed so as to be formed long in the width direction of the vehicle, and the cover parts 10, 12 and 13 are formed in the same shape as the cover parts 10, 12 and 13, respectively. A preliminary step (S1) of fabricating by rolling or rolling (roll forming) or pressing the rail portion 20 of the steel material configured with a plurality of fastening holes 21 to insert the fastening protrusion 11 of the 13; 상기 커버부(10, 12, 13)의 체결돌기(11)가 상기 레일부(20) 상의 체결공(21)에 삽입되도록 하는 조립단계(S2);An assembling step (S2) to allow the fastening protrusion 11 of the cover part 10, 12, 13 to be inserted into the fastening hole 21 on the rail part 20; 상기 체결공(21)에 삽입된 상기 체결돌기(11)의 단부를 가열용융하여 상기 커버부(10, 12. 13)와 레일부(20)를 결합하는 결합단계(S3);A coupling step (S3) of coupling the cover part (10, 12. 13) and the rail part (20) by heating and melting an end portion of the fastening protrusion (11) inserted into the fastening hole (21); 를 포함하여 이루어지는 것을 특징으로 하는 자동차용 범퍼빔의 제작방법.Method for producing a bumper beam for cars, characterized in that comprises a.
KR1020070095156A 2007-09-19 2007-09-19 Manufacturing method of bumper beam for a vehicle KR101422626B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105922960A (en) * 2016-05-18 2016-09-07 张家港润盛科技材料有限公司 Car collision transverse beam
KR101666423B1 (en) * 2015-10-07 2016-10-17 현대다이모스(주) Seat back frame for a vehicle and and manufacturing method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029411A1 (en) * 2000-06-15 2001-12-20 Bayer Ag Plastic-metal composite component and method for its production
GB0114684D0 (en) * 2001-06-15 2001-08-08 Dow Chemical Co Automobile assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101666423B1 (en) * 2015-10-07 2016-10-17 현대다이모스(주) Seat back frame for a vehicle and and manufacturing method thereof
CN105922960A (en) * 2016-05-18 2016-09-07 张家港润盛科技材料有限公司 Car collision transverse beam

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