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KR100932672B1 - Bumper Beam Unit for Vehicle - Google Patents

Bumper Beam Unit for Vehicle Download PDF

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Publication number
KR100932672B1
KR100932672B1 KR1020070138938A KR20070138938A KR100932672B1 KR 100932672 B1 KR100932672 B1 KR 100932672B1 KR 1020070138938 A KR1020070138938 A KR 1020070138938A KR 20070138938 A KR20070138938 A KR 20070138938A KR 100932672 B1 KR100932672 B1 KR 100932672B1
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KR
South Korea
Prior art keywords
bumper beam
bumper
vehicle
center
stay
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Expired - Fee Related
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KR1020070138938A
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Korean (ko)
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KR20090070807A (en
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이문용
전성진
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주식회사 성우하이텍
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Priority to KR1020070138938A priority Critical patent/KR100932672B1/en
Publication of KR20090070807A publication Critical patent/KR20090070807A/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
    • B60R19/04—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
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • 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
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
    • 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
    • B60R2019/1893—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 comprising a multiplicity of identical adjacent shock-absorbing means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vibration Dampers (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

본 발명은 범퍼빔의 배면에 대응하여 양측 스테이를 연결하는 백 플레이트를 설치하고, 2장의 범퍼 레일 내부 중앙과 전면 보강 플레이트 내측에는 충격흡수부재를 각각 개재하여 정면 충격에 의한 충격 에너지를 다단으로 흡수함과 동시에, 잔여 충격 에너지를 범퍼빔 양단의 스테이를 통하여 프론트 사이드 멤버 측으로 고르게 분산 흡수되도록 하여 충격흡수성능이 우수하고, 구조적으로 안정된 차량용 범퍼빔 유닛을 제공한다.The present invention provides a back plate that connects the two stays corresponding to the rear surface of the bumper beam, and absorbs the impact energy due to the frontal impact in multiple stages through the shock absorbing members in the center of the two bumper rails and inside the front reinforcement plate, respectively. At the same time, the residual impact energy is distributed and absorbed evenly to the front side member side through the stays at both ends of the bumper beam, thereby providing an excellent shock absorbing performance and structurally stable vehicle bumper beam unit.

Description

차량용 범퍼빔 유닛{AUTOMOTIVE BUMPER BEAM UNIT}Bumper Beam Unit for Vehicles {AUTOMOTIVE BUMPER BEAM UNIT}

본 발명은 차량용 범퍼빔 유닛에 관한 것으로서, 보다 상세하게는 범퍼빔의 배면에 대응하여 양측 스테이를 연결하는 백 플레이트를 설치하고, 2장의 범퍼 레일 내부 중앙과 전면 보강 플레이트 내측에는 충격흡수부재를 각각 개재하여 정면 충격에 의한 충격 에너지를 다단으로 흡수함과 동시에, 잔여 충격 에너지를 범퍼빔 양단의 스테이를 통하여 프론트 사이드 멤버 측으로 고르게 분산 흡수되도록 하여 충격흡수성능이 우수하고, 구조적으로 안정된 차량용 범퍼빔 유닛에 관한 것이다.The present invention relates to a bumper beam unit for a vehicle, and more particularly, a back plate for connecting both stays corresponding to the rear surface of the bumper beam is provided, and an impact absorbing member is respectively provided in the center of the two bumper rails and inside the front reinforcement plate. A vehicle bumper beam unit having excellent shock absorption performance and structural stability by absorbing impact energy caused by frontal impact in multiple stages and distributing residual impact energy evenly to the front side member side through the stays at both ends of the bumper beam. It is about.

일반적으로 차량에서의 범퍼는 자동차가 다른 자동차나 고정체와의 충돌시, 그 충격을 흡수하여 승차자의 안전을 도모하며, 동시에 차체의 변형을 최소화 할 수 있도록 자동차의 전,후 단부의 소정 부위에 배치되는 완충유닛이다.In general, a bumper in a vehicle absorbs an impact when a vehicle collides with another vehicle or a fixed body to promote the safety of the occupant, and at the same time, a predetermined portion of the front and rear ends of the vehicle can be minimized to minimize deformation of the vehicle body. The buffer unit is arranged.

도 1에서 도시한 바와 같이, 상기한 범퍼(100)는 차량의 전,후방에서 차폭 방향으로 배치되는 범퍼빔(101)의 후방 양측에 스테이(103)가 장착되어 크래쉬 박스(111) 등을 통하여 차체측 사이드 멤버(113)에 고정되는 범퍼빔 유닛(105)과, 상기 범퍼빔(101)의 전방에 배치되어 충격력을 흡수하는 에너지 업소버(107), 그리고 상기 범퍼빔(101)과 에너지 업소버(107)를 감싸는 범퍼 커버(109)로 이루어진다.As shown in FIG. 1, the bumper 100 has a stay 103 mounted on both rear sides of the bumper beam 101 disposed in the vehicle width direction from the front and the rear of the vehicle, and through the crash box 111. A bumper beam unit 105 fixed to the vehicle body side member 113, an energy absorber 107 disposed in front of the bumper beam 101 to absorb impact force, and the bumper beam 101 and an energy absorber ( And a bumper cover 109 that encloses 107.

여기서, 상기한 종래의 범퍼빔 유닛(105)은, 도 2에서 도시한 바와 같이, 롤 포밍 성형되는 2장의 범퍼 레일(121,123)이 상호 용접되어 범퍼빔(101)을 형성하고, 상기 범퍼빔(101)의 전면 중앙에는 일정길이의 보강 플레이트(125)가 용접된다. Here, in the conventional bumper beam unit 105, as illustrated in FIG. 2, two bumper rails 121 and 123 which are roll-formed are welded to each other to form a bumper beam 101, and the bumper beam ( The reinforcing plate 125 of a predetermined length is welded to the front center of the 101.

또한, 상기 범퍼빔(101)의 후면 양단부에는 각각 스테이(103)가 용접되며, 상기 각 스테이(103)는 플랜지(127)을 통하여 각 크래쉬 박스(111)에 조립되어 사이드 멤버(113)에 설치된다. In addition, the stay 103 is welded to both ends of the rear surface of the bumper beam 101, and each stay 103 is assembled to each crash box 111 through the flange 127 and installed on the side member 113. do.

그러나 상기한 종래의 범퍼빔 유닛(105)은, 도 6의 종래 기술에서 도시한 센터 폴 충돌시험의 결과에서와 같이, 충격 에너지(E)가 범퍼빔(101)의 중앙(P)에 가해지면, 상기 범퍼빔(101)은 그 중앙에 보강 플레이트(125)가 구성됨에도 불구하고, 상기 충격 에너지(E)를 스테이(103)와 크래쉬 박스(111)를 통하여 사이드 멤버(113)로 분산 전달하지 못하고, 범퍼빔(101)의 중앙이 급격히 휘어지면서 꺾이게 되어 그 꺾임부(중앙;P)에 과도한 응력이 작용하게 되는 등, 그 충격흡수성능이 낮은 결과를 나타내는 문제점이 있다.However, in the conventional bumper beam unit 105, when the impact energy E is applied to the center P of the bumper beam 101, as in the result of the center pole crash test shown in the prior art of FIG. Although the bumper beam 101 is configured with a reinforcing plate 125 at the center thereof, the bumper beam 101 does not distribute and transmit the impact energy E to the side member 113 through the stay 103 and the crash box 111. In this case, the bumper beam 101 may be bent while being sharply bent, and excessive stress may be applied to the bent portion (center; P), resulting in low impact absorption performance.

따라서 본 발명은 상기한 바와 같은 종래의 문제점들을 해소하기 위하여 발명된 것으로, 본 발명의 목적은 범퍼빔의 배면에 대응하여 양측 스테이를 연결하는 백 플레이트를 설치하고, 2장의 범퍼 레일 내부 중앙과 전면 보강 플레이트 내측에는 충격흡수부재를 각각 개재하여 정면 충격에 의한 충격 에너지를 다단으로 흡수함과 동시에, 잔여 충격 에너지를 범퍼빔 양단의 스테이를 통하여 프론트 사이드 멤버 측으로 고르게 분산 흡수되도록 하여 충격흡수성능이 우수하고, 구조적으로 안정된 차량용 범퍼빔 유닛을 제공하는 것이다. Therefore, the present invention has been invented to solve the conventional problems as described above, an object of the present invention is to provide a back plate for connecting the two side stays corresponding to the rear surface of the bumper beam, two bumper rail inner center and front Inside the reinforcing plate, the shock absorbing member is absorbed in multiple stages through the shock absorbing member, and the remaining shock energy is distributed and absorbed evenly to the front side member side through the stays at both ends of the bumper beam. To provide a structurally stable vehicle bumper beam unit.

상기한 바와 같은 목적을 실현하기 위한 본 발명의 차량용 범퍼빔 유닛은 전방 범퍼 레일과 후방 범퍼 레일로 구성되어 차폭 방향으로 배치되는 범퍼빔과, 상기 전방 범퍼 레일의 전면 중앙에 용접되는 보강 플레이트와, 상기 범퍼빔의 후방 양측에 설치되어 범퍼빔을 차체에 고정하는 스테이로 구성되는 차량용 범퍼빔 유닛에 있어서,
상기 범퍼빔은 그 전방 범퍼 레일과 후방 범퍼 레일 사이에 상부 공간부와 하부 공간부를 형성하고, 상기 전방 범퍼 레일과 상기 보강 플레이트 사이에는 중앙 공간부를 형성하여 상기 상부 공간부, 하부 공간부, 및 중앙 공간부의 각 중앙에는 일정구간 각각 발포 알루미늄 폼으로 구성되는 충격흡수부재가 개재되며,
상기 후방 범퍼 레일의 배면에는 백 플레이트를 상기 양측 스테이에 그 양단을 통하여 장착하되, 상기 백 플레이트는 그 양단부에 스테이 삽입홀을 형성하여 각 스테이에 끼워진 상태로 그 양단부 배면이 각 스테이의 플랜지부에 용접되며, 그 단면은 전후방향 요철형상으로 절곡 성형되어 절곡면으로 형성되는 것을 특징으로 한다.The vehicle bumper beam unit of the present invention for realizing the above object comprises a bumper beam composed of a front bumper rail and a rear bumper rail and disposed in the vehicle width direction, a reinforcement plate welded to the front center of the front bumper rail, In the bumper beam unit for a vehicle comprising a stay provided on both sides of the rear of the bumper beam to fix the bumper beam to the vehicle body,
The bumper beam forms an upper space portion and a lower space portion between the front bumper rail and the rear bumper rail, and forms a central space portion between the front bumper rail and the reinforcement plate to form the upper space portion, the lower space portion, and the center. Each center of the space portion is interposed with a shock-absorbing member composed of foamed aluminum foam for a certain period,
The rear plate of the rear bumper rail is equipped with a back plate on both sides of the stay through the both ends, the back plate is formed in each of the ends of the stay in the back plate is formed in each stay, the rear end of both ends of the flange portion of each stay Welded, the cross section is characterized in that the front and rear bent shape is formed into a bent surface.

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이상에서 설명한 바와 같이, 본 발명에 따른 차량용 범퍼빔 유닛에 의하면, 범퍼빔의 배면에 대응하여 양측 스테이를 연결하는 백 플레이트를 설치하고, 2장의 범퍼 레일 내부 중앙과 전면 보강 플레이트 내측에는 충격흡수부재를 각각 개재함으로써 정면 충격에 의한 충격 에너지를 상기 충격흡수부재에 의해 다단으로 흡수함과 동시에, 잔여 충격 에너지를 상기 백 플레이트에 의해 범퍼빔 양단의 스테이를 통하여 프론트 사이드 멤버 측으로 고르게 분산 흡수되도록 하여 충격흡수성능이 우수하고, 구조적으로 안정되는 효과가 있다.As described above, according to the bumper beam unit for a vehicle according to the present invention, a back plate for connecting both stays corresponding to the rear surface of the bumper beam is provided, and the shock absorbing member is disposed in the center of the two bumper rails and inside the front reinforcement plate. Respectively absorbs the impact energy due to the frontal impact by the shock absorbing member in multiple stages, and the residual impact energy is distributed and absorbed evenly by the back plate to the front side member side through the stays at both ends of the bumper beam. It has an excellent absorption performance and structurally stable effect.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조로 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

도 3은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 전면 사시도이고, 도 4는 도 3의 A-A 선에 따른 단면도이며, 도 5는 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 분해 사시도이다.3 is a front perspective view of a vehicle bumper beam unit according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 5 is an exploded perspective view of a vehicle bumper beam unit according to an embodiment of the present invention. .

본 실시예에 따른 차량용 범퍼빔 유닛은, 도 3 내지 도 5에서 도시한 바와 같이, 차폭 방향으로 배치되는 범퍼빔(1)이 구비되고, 상기 범퍼빔(1)의 후방 양측에는 크래쉬 박스(5)와 연결되는 스테이(3)가 설치되어 범퍼빔(1)을 차체측 사이드 멤버(미도시)에 고정하도록 구성된다.As illustrated in FIGS. 3 to 5, the bumper beam unit for a vehicle according to the present exemplary embodiment includes a bumper beam 1 disposed in a vehicle width direction, and a crash box 5 is disposed at both rear sides of the bumper beam 1. Stay 3 is connected to the structure is configured to fix the bumper beam 1 to the vehicle body side side member (not shown).

즉, 상기 범퍼빔(1)은 롤 포밍 성형되는 전방 범퍼 레일(11)과 후방 범퍼 레일(13)이 상호 용접되어 형성하고, 상기 범퍼빔(1)의 전면 중앙에는 일정길이의 보강 플레이트(15)가 용접 설치된다. That is, the bumper beam 1 is formed by welding the front bumper rail 11 and the rear bumper rail 13 which are roll-formed, and the reinforcement plate 15 having a predetermined length in the center of the front surface of the bumper beam 1. ) Is installed by welding.

또한, 상기 범퍼빔(1)의 후면 양단부에는 상기 스테이(3)가 각각 용접되며, 상기 각 스테이(3)는 그 플랜지(7)를 통하여 크래쉬 박스(5)에 각각 설치된다. In addition, the stays 3 are welded to both ends of the rear surface of the bumper beam 1, and the stays 3 are provided in the crash box 5 through the flanges 7, respectively.

단, 도 5에서 미 설명부호 21과 23은 크래쉬 박스(5)의 전후방에 용접설치되는 플랜지이다.In FIG. 5, reference numerals 21 and 23 are flanges which are welded to the front and rear of the crash box 5.

상기 범퍼빔(1)은, 도 4에서 도시한 바와 같이, 그 전방 범퍼 레일(11)과 후방 범퍼 레일(13) 사이에 상부 공간부(S1)와 하부 공간부(S2)를 형성하고, 상기 전방 범퍼 레일(11)과 상기 보강 플레이트(15) 사이에는 중앙 공간부(S3)를 형성한 다.As shown in FIG. 4, the bumper beam 1 forms an upper space portion S1 and a lower space portion S2 between the front bumper rail 11 and the rear bumper rail 13. A central space S3 is formed between the front bumper rail 11 and the reinforcement plate 15.

상기 상부 공간부(S1)와 하부 공간부(S2) 및 중앙 공간부(S3)의 각 중앙에는 일정구간에 걸쳐 각각 충격흡수부재(17)가 개재되는데, 상기 충격흡수부재(17)는 발포 알루미늄 폼으로 이루어져, 상기 보강 플레이트(15)의 길이와 동일한 길이로 직사각 단면을 갖는다.In each center of the upper space (S1), lower space (S2) and the central space (S3) are each provided with a shock absorbing member 17 over a predetermined period, the shock absorbing member 17 is foamed aluminum It is made of foam and has a rectangular cross section with the same length as the length of the reinforcing plate 15.

그리고 상기 범퍼빔(1)의 배면에는 백 플레이트(9)가 그 양단을 통하여 상기 양측 스테이(3)에 각각 연결되어 장착되는데, 이때, 상기 백 플레이트(9)는 상기 범퍼빔(1)의 후방 범퍼 레일(13)의 배면을 따라 대응하여 배치된다. In addition, the back plate 9 is mounted on the rear surface of the bumper beam 1 to be connected to both sides of the stay 3 through both ends thereof. In this case, the back plate 9 is rearward of the bumper beam 1. Correspondingly arranged along the rear surface of the bumper rail 13.

상기 백 플레이트(9)는 직선 레일로 롤 포밍 성형되어 형성되며, 그 양단부에 상기 각 스테이(3)가 삽입되도록 스테이 삽입홀(H)을 형성하며, 그 단면은 전후방향 요철형상으로 절곡 성형되어 절곡면으로 형성된다.The back plate 9 is formed by roll forming with a straight rail, and forms a stay insertion hole H so that the respective stays 3 are inserted at both ends thereof, and the cross section is bent and formed into a front and rear uneven shape. It is formed into a bent surface.

즉, 상기 백 플레이트(9)는 그 양단이 스테이 삽입홀(H)을 통하여 각 스테이(3)에 끼워진 상태로, 그 양단부 배면이 각 스테이(3)의 플랜지(7)에 용접되어 장착된다.That is, the back plate 9 is mounted on both ends of the back plate 9 by welding to the flange 7 of each stay 3, with both ends thereof fitted into the stays 3 through the stay insertion holes H.

따라서 상기한 바와 같은 구성을 갖는 차량용 범퍼빔 유닛은 범퍼빔(1)의 배면에 대응하여 양측 스테이(3)를 연결하는 백 플레이트(9)를 설치하고, 2장의 범퍼 레일(11,13) 내부 중앙과 전면 보강 플레이트(15)의 내측에는 발포 알루미늄 폼으로 이루어지는 충격흡수부재(17)를 각각 개재하여 정면 충격에 의한 충격 에너지(E)를 다단으로 흡수함과 동시에, 잔여 충격 에너지(E)를 범퍼빔(1) 양단의 스테이(3)를 통하여 프론트 사이드 멤버 측으로 고르게 분산 흡수되도록 하여 충격흡수 성능을 향상시키며, 구조적으로도 안정성을 갖는다.Therefore, the vehicle bumper beam unit having the above-described configuration is provided with a back plate 9 for connecting both stays 3 corresponding to the rear surface of the bumper beam 1, and inside the two bumper rails 11 and 13. Inside the center and the front reinforcing plate 15, the shock absorbing member 17 made of foamed aluminum foam is absorbed in multiple stages, and the remaining impact energy E is absorbed. Through the stays 3 on both ends of the bumper beam 1, the front side member is distributed and absorbed evenly, thereby improving shock absorption performance and structurally stable.

즉, 도 6은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 센터 폴 충돌시험에 의한 변형량 분석도이고, 도 7은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 센터 폴 충돌시험에 의한 IMPACT FORCE 그래프를 도시하고 있다.That is, Figure 6 is a deformation analysis by the center pole crash test of the vehicle bumper beam unit according to an embodiment of the present invention, Figure 7 is an IMPACT by the center pole crash test of the vehicle bumper beam unit according to an embodiment of the present invention The FORCE graph is shown.

본 실시예에 따른 차량용 범퍼빔 유닛은 다음과 같은 센터 폴 충돌해석결과를 갖는다.The bumper beam unit for a vehicle according to the present embodiment has the following center pole collision analysis results.

상기 센터 폴 충돌시험은 그 충돌 속도가 64Km/h인 고속에서 이루어지며, 도 6에서 도시한 변형량 분석도에서는 종래 기술의 경우, 충격 에너지(E)가 범퍼빔(101)의 중앙(P)에 가해지면, 상기 범퍼빔(101)은 그 중앙에 보강 플레이트(125)가 구성됨에도 불구하고, 상기 충격 에너지(E)를 스테이(103)와 크래쉬 박스(111)를 통하여 사이드 멤버(113)로 충분히 분산 전달하지 못하고, 범퍼빔(101)의 중앙이 급격히 휘어지면서 꺾이게 되고, 양측 스테이(103)와 크래쉬 박스(111)는 크게 변형되지 않는 결과를 나타낸다. The center pole collision test is performed at a high speed with a collision speed of 64 km / h. In the deformation analysis shown in FIG. 6, in the prior art, the impact energy E is applied to the center P of the bumper beam 101. When the bumper beam 101 is applied, although the reinforcement plate 125 is configured at the center thereof, the bumper beam 101 sufficiently absorbs the impact energy E into the side member 113 through the stay 103 and the crash box 111. Failure to transmit the dispersion, the center of the bumper beam 101 is bent sharply bends, both sides 103 and the crash box 111 shows a result that does not significantly deform.

반면, 본 발명의 경우에는 충격 에너지(E)가 범퍼빔(1)의 중앙(P)에 가해지면, 상기 범퍼빔(1)은 그 중앙이 각 충격흡수부재(17)에 의해 충격 에너지(E)를 일부 흡수하면서 휘어져 백 플레이트(9)와 함께 후방으로 밀리게 되며, 이때, 전달되는 충격 에너지(E)는 스테이(3)를 붕괴시키면서 사이드 멤버(미도시) 측으로 분산하여 전달하는 결과를 나타낸다.On the other hand, in the case of the present invention, when the impact energy (E) is applied to the center (P) of the bumper beam (1), the bumper beam (1) is the center of the impact energy (E) by each shock absorbing member 17 ) Is bent while absorbing a part of the back plate and is pushed backward together with the back plate 9, wherein the transmitted impact energy E disperses the stay 3 and disperses it to the side member (not shown). .

그리고 상기한 센터 폴 충돌시험에 의한 IMPACT FORCE는 범퍼빔이 충격에 견디는 힘으로, 도 7에서 도시한 바와 같이, 종래 기술의 경우, 최대 IMPACT FORCE가 2.3382×105 N으로 나타나며, 본 발명의 경우, 최대 IMPACT FORCE가 2.5×107 N으로 나타나는 바와 같이, 종래 기술에 비해 본 발명의 범퍼빔(1)이 최대 IMPACT FORCE의 측면에서 유리한 이점을 갖는다.And the IMPACT FORCE by the center pole collision test is a force that the bumper beam withstands the impact, as shown in Figure 7, in the prior art, the maximum IMPACT FORCE is 2.3382 × 10 5 N, in the case of the present invention As the maximum IMPACT FORCE is represented by 2.5 × 10 7 N, the bumper beam 1 of the present invention has an advantage over the prior art in terms of the maximum IMPACT FORCE.

이는 종래 기술의 범퍼빔(101)에 비하여 본 실시예에 의한 범퍼빔(1)의 충격흡수성능이 우수함을 짐작할 수 있다. This can be estimated that the shock absorption performance of the bumper beam 1 according to the present embodiment is superior to the bumper beam 101 of the prior art.

도 1은 일반적인 차량용 범퍼의 분해 사시도이다.1 is an exploded perspective view of a general vehicle bumper.

도 2는 종래 기술에 따른 차량용 범퍼빔 유닛의 사시도이다.2 is a perspective view of a vehicle bumper beam unit according to the prior art.

도 3은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 전면 사시도이다.3 is a front perspective view of a bumper beam unit for a vehicle according to an embodiment of the present invention.

도 4는 도 3의 A-A 선에 따른 단면도이다. 4 is a cross-sectional view taken along the line A-A of FIG.

도 5는 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 분해 사시도이다.5 is an exploded perspective view of a vehicle bumper beam unit according to an exemplary embodiment of the present invention.

도 6은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 센터 폴 충돌시험에 의한 변형량 분석도이다. Figure 6 is a deformation analysis by the center pole crash test of a vehicle bumper beam unit according to an embodiment of the present invention.

도 7은 본 발명의 실시예에 따른 차량용 범퍼빔 유닛의 센터 폴 충돌시험에 의한 IMPACT FORCE 그래프이다. 7 is an IMPACT FORCE graph by the center pole crash test of a vehicle bumper beam unit according to an embodiment of the present invention.

Claims (6)

삭제delete 삭제delete 삭제delete 전방 범퍼 레일과 후방 범퍼 레일로 구성되어 차폭 방향으로 배치되는 범퍼빔과, 상기 전방 범퍼 레일의 전면 중앙에 용접되는 보강 플레이트와, 상기 범퍼빔의 후방 양측에 설치되어 범퍼빔을 차체에 고정하는 스테이로 구성되는 차량용 범퍼빔 유닛에 있어서,A bumper beam composed of a front bumper rail and a rear bumper rail and disposed in the vehicle width direction, a reinforcement plate welded to the front center of the front bumper rail, and stays provided at both rear sides of the bumper beam to fix the bumper beam to the vehicle body. In the vehicle bumper beam unit comprising: 상기 범퍼빔은 그 전방 범퍼 레일과 후방 범퍼 레일 사이에 상부 공간부와 하부 공간부를 형성하고, 상기 전방 범퍼 레일과 상기 보강 플레이트 사이에는 중앙 공간부를 형성하여 상기 상부 공간부, 하부 공간부, 및 중앙 공간부의 각 중앙에는 일정구간 각각 발포 알루미늄 폼으로 구성되는 충격흡수부재가 개재되며, The bumper beam forms an upper space portion and a lower space portion between the front bumper rail and the rear bumper rail, and forms a central space portion between the front bumper rail and the reinforcement plate to form the upper space portion, the lower space portion, and the center. Each center of the space portion is interposed with a shock-absorbing member composed of foamed aluminum foam for a certain period, 상기 후방 범퍼 레일의 배면에는 백 플레이트를 상기 양측 스테이에 그 양단을 통하여 장착하되, 상기 백 플레이트는 그 양단부에 스테이 삽입홀을 형성하여 각 스테이에 끼워진 상태로 그 양단부 배면이 각 스테이의 플랜지부에 용접되며, 그 단면은 전후방향 요철형상으로 절곡 성형되어 절곡면으로 형성되는 것을 특징으로 하는 차량용 범퍼빔 유닛. The rear plate of the rear bumper rail is equipped with a back plate on both sides of the stay through the both ends, the back plate is formed in each of the ends of the stay in the back plate is formed in each stay, the rear end of both ends of the flange portion of each stay The bumper beam unit for a vehicle, which is welded and its cross section is formed into a bent surface by being bent into a front and rear uneven shape. 삭제delete 삭제delete
KR1020070138938A 2007-12-27 2007-12-27 Bumper Beam Unit for Vehicle Expired - Fee Related KR100932672B1 (en)

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KR101272051B1 (en) * 2011-12-19 2013-06-07 주식회사 성우하이텍 Bumper beam unit for vehicle
KR101372814B1 (en) * 2012-06-05 2014-03-12 주식회사 성우하이텍 Bumper beam for vehicles
CN107953844A (en) * 2016-10-18 2018-04-24 南京金邦动力科技有限公司 The multiplex buffer gear of bumper
CN107499265B (en) * 2016-12-30 2020-05-05 湖南文理学院 Automobile impact buffering system and method
CN112193188B (en) * 2020-10-10 2022-01-25 宁波昌扬机械工业有限公司 Rear anti-collision beam assembly of automobile
KR102772268B1 (en) 2022-12-28 2025-02-21 (주)엘엑스하우시스 Composite beam for vehicle

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JP2004322861A (en) * 2003-03-04 2004-11-18 Jsp Corp Bumper structure

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JP2004322861A (en) * 2003-03-04 2004-11-18 Jsp Corp Bumper structure

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