WO2010008217A2 - Vehicle bumper - Google Patents
Vehicle bumper Download PDFInfo
- Publication number
- WO2010008217A2 WO2010008217A2 PCT/KR2009/003921 KR2009003921W WO2010008217A2 WO 2010008217 A2 WO2010008217 A2 WO 2010008217A2 KR 2009003921 W KR2009003921 W KR 2009003921W WO 2010008217 A2 WO2010008217 A2 WO 2010008217A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bumper
- back beam
- vehicle
- plates
- crash box
- Prior art date
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Classifications
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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
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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
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
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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
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
Definitions
- the present invention relates to a vehicle bumper, and more particularly, to a vehicle bumper having improved stiffness and excellent absorbing force of collision energy, not easily being torn or broken, and having pedestrian protection when colliding with a pedestrian. .
- the vehicle bumper is installed at the front and rear of the vehicle, and serves to alleviate and reduce the amount of impact received by the vehicle by absorbing the impact when colliding with another vehicle or an external object.
- such a conventional vehicle bumper includes a fascia 10 forming the outline of the bumper 1, a foam 20 disposed inside the fascia 10, and the fascia 10. It is located on the rear side of the front end is composed of a back beam 30 is fixed to the foam 20, the rear side of the back beam 30 is crash box 40 for coupling the back beam 30 to the vehicle body is connected Is done.
- the fascia 10 is composed of a plastic material as part of the exterior of the vehicle bumper and at the same time absorbs the collision energy
- the foam 20 is made of foam rubber or styrofoam as a part to absorb and buffer the collision energy It is composed
- the back beam 30 is composed of a lot of steel in a frame structure having a hollow.
- the crash box 40 is stronger than the bumper back beam for the purpose of minimizing damage to the vehicle body due to a collision, but has a lower strength than the side members, and is formed in the form of a steel hollow box having a rectangular cross-sectional shape.
- the back beam 30 is made of high strength steel in order to increase the impact energy absorption while reducing the weight.
- Such a conventional bumper is formed such that the foam 20 has a predetermined volume, and occupies a lot of space inside the fascia 10, which may have a problem in that the size of the back beam 30 for strength reinforcement is restricted.
- the limitation of the size of the back beam 30 causes a reduction in the cross-sectional area of the back beam 30, which causes a problem of easily bending during collision.
- the strength can be increased, but the elongation is low, causing excessive deformation during collisions, as well as easily breaking or tearing, which is expensive and economical. There is a disadvantage.
- the conventional back beam 30 has a problem in that the internal space is formed in a hollow shape with an empty internal space so that the outer shape is easily crushed or broken during a collision.
- a bumper of a vehicle is manufactured by inserting a honeycomb core or a reinforcement having various shapes into the back beam 30.
- a reinforcement having various shapes into the back beam 30.
- the weight increases due to the load of the reinforcement, and it is difficult to adjust the collision energy absorbing capacity according to the weight of each vehicle type. There is a problem that the energy absorption capacity is not sufficiently exhibited.
- the crash box 40 which is a means for connecting the conventional back beam 30 to the vehicle body, is manufactured in the form of a hollow steel hollow box, it has a very weak strength with respect to the shear force at the time of collision, and is easily deformed to absorb crash energy. Very few Moreover, it has a deformation
- an object of the present invention is to increase the impact energy absorption while increasing the strength, not to be easily torn or broken, as well as to greatly increase the space utilization according to the arrangement of the components and to protect pedestrians
- the fascia located on the outside of the vehicle and forming an appearance; And a plurality of back beam plates having a first convex portion formed on a surface thereof to sequentially stack the first convex portions symmetrically with each other to form a first honeycomb space portion, and comprising a bumper back beam disposed on a rear surface of the fascia.
- a plurality of back beam plates having a first convex portion formed on a surface thereof to sequentially stack the first convex portions symmetrically with each other to form a first honeycomb space portion, and comprising a bumper back beam disposed on a rear surface of the fascia.
- the plurality of stacked back beam plate is characterized in that it is formed to gradually become thicker toward the inner side from the front side outward direction of the vehicle,
- the first honeycomb space portion formed in the bumper backbeam 100 may include a first convex portion formed on each of the plurality of backbeam plates stacked symmetrically with each other, and a first vertical connection portion connecting the first convex portion. It is done.
- a plurality of shape plates having a second convex portion formed on a surface thereof are sequentially stacked symmetrically with the second convex portion to form a second honeycomb space portion, and connected to a rear surface of the bumper back beam to couple the bumper back beam to the vehicle body of the vehicle. It characterized in that it further comprises a crash box.
- the second honeycomb space portion formed in the crash box is formed by a second convex portion formed in the plurality of shape plates stacked symmetrically with each other, and a second vertical connecting portion connecting the second convex portion.
- the crash box is vertically connected to the bumper backbeam, whereby the crash box has a strong resistance to shear force.
- the shape of the bumper back beam and the crash box constituting the vehicle bumper is welded by a plurality of plates in contact with each other, the convex portions formed on these plates are configured to be symmetrically laminated to each other by the symmetrical joining of the convex portions Since the space portion is formed, the strength of the vehicle bumper can be increased as compared with the existing bumper.
- the bumper back beam and the crash box can increase the collision energy absorption force by multiple plates, do not easily be torn or broken, and can fully exhibit the collision energy absorption capability from low speed to high speed collision as well as pedestrian protection.
- the bumper back beam and the crash box in which the honeycomb space part is formed can easily adjust the collision energy absorbing capacity with respect to the total weight of the vehicle, and the bumper back beam and the crash box are formed by stacking a plurality of plates to form a new vehicle. In the design of the vehicle, it is possible to quickly respond to the development of the bumper back beam for the new car.
- 1 is a configuration diagram showing a conventional vehicle bumper structure
- FIG. 2 is a perspective view illustrating a connection state of a bumper back beam and a crash box mounted on a conventional vehicle bumper;
- FIG. 3 is a perspective view of a vehicle bumper according to the present invention.
- FIG. 4 is an exploded perspective view of FIG. 3;
- FIG. 5 is a perspective view of the bumper backbeam of FIG. 3, FIG.
- FIG. 6 is a longitudinal sectional view of FIG. 5;
- FIG. 7 is a perspective view of the bumper back beam and the crash box of FIG. 3 connected to each other;
- FIG. 8 is a cross-sectional view taken along the line A-A of FIG.
- FIG. 9 is a perspective view showing another connection state of the bumper back beam and the crash box of the vehicle bumper according to the present invention.
- FIG. 10 is a graph comparing the collision energy absorption capacity of the vehicle bumper according to the present invention.
- first honeycomb space portion 110a first convex portion
- crash box 210 second honeycomb space part
- a vehicle bumper according to the present invention has a fascia 50 and a bumper backbeam 100.
- the fascia 50 is located on the outside of the vehicle, constitutes the exterior of the vehicle bumper, and simultaneously absorbs collision energy for the first time.
- the fascia 50 has a shape of a housing in which one side of the front is open, and a bumper at the rear of the fascia 50. An accommodation space for inserting the back beam 100 is formed.
- the bumper back beam 100 includes a plurality of back beam plates 111, 112, 113, 114, and 115 on which the first convex portion 110a is formed by a continuous bending process in the longitudinal direction of the plate.
- the five hundred beam plate 115 is called.
- Each of the back beam plates 111, 112, 113, 114, and 115 is formed by sequentially stacking the first convex portions 110a symmetrically and welded to form a structure that forms a multi-cell, that is, the first honeycomb space portion 110. It consists of a structure to form.
- the bumper back beam 100 is the first to fifth back beam plate (111, 112, 113, 114, 115) is arranged in close contact with each other in the inward direction of the front side of the vehicle, and in close contact with each other, in particular by the close contact of each first convex portion (110a)
- the first honeycomb space portion 110 which is a support structure of the beam 101, which acts to bend (bending) against stress (collision energy), is formed therein.
- the first honeycomb space portion 110a formed in the bumper backbeam 100 may include first convex portions 110a formed on a plurality of backbeam plates 111, 112, 113, 114, and 115 that are symmetrically stacked with each other, and the first convex portion 110a. ) Is made by the first vertical connecting portion (110b) for connecting.
- the bumper back beam 100 has a plurality of back beam plates 111, 112, 113, 114, and 115 arranged inward from the front side of the vehicle to be in intimate contact with each other, and further include a first convex portion protrudingly formed on each of the back beam plates 111, 112, 113, 114, and 115.
- the 110a) are configured to be symmetrical to each other, the first honeycomb space portion 110 in which a bending action is bent to an external stress such as impact energy is naturally formed.
- the bumper back beam 100 is a type of bumper back beam that is not a type that reinforces rigidity by inserting a separate reinforcement unlike a conventional bumper back beam by combining a plurality of back beam plates 111, 112, 113, 114, and 115 having convex portions 110a.
- the first honeycomb space portion 110 which has an organically strong bonding relationship in the same type as the cell tissue from its surface to the inside, is naturally formed, thereby improving the durability and reducing the shock and impact of the bumper. Prevents cracking and distorting.
- the plurality of back beam plates 111, 112, 113, 114, and 115 constituting the bumper back beam 100 may be made of a steel material or an aluminum material, and may be formed of a metal alloy including the material.
- the first convex portion 110a of each of the back beam plates 111, 112, 113, 114, and 115 is formed by press molding or roll forming through a press mold or a roll forming machine. .
- the plurality of back beam plates 111, 112, 113, 114 and 115 constituting the bumper back beam 100 are formed to gradually become thicker from the front outer side of the vehicle toward the inner side, that is, the fifth back beam plate 115 from the first back beam plate 111.
- the thickness of the plate to the By gradually increasing the thickness of the plate to the), it is possible to sufficiently absorb the collision energy from low-speed collision to high-speed collision as well as pedestrian protection.
- the first back beam plate 111 located at the outermost side of the front side of the vehicle has a thickness of 0.5 mm, so that the vehicle is protected at a low speed collision with pedestrian protection. It serves to prevent damage, and the first back beam plate 111 is to reduce the thickness compared to the other back beam plate (112, 113, 114, 115) to be able to absorb the impact energy by transforming at a low load, thereby exhibiting pedestrian protection performance To be able.
- the second back beam plate 112 positioned behind the first back beam plate 111 has a thickness of 0.6 to 0.7 mm, and serves to absorb collision energy during a vehicle collision at a medium speed.
- the third white beam plate 113 is 0.6 to 1 mm thick. Absorbs crash energy during high-speed vehicle crashes.
- the fourth back beam plate 114 has a thickness of 0.6 to 1.5 mm to absorb collision energy during high-speed vehicle collision.
- the fifth back beam plate 115 located at the innermost side of the vehicle front side, has a thickness of 0.6 to 1.5 mm and is configured to absorb collision energy during high-speed vehicle collision.
- the bumper back beam 100 is configured in a bonding structure in which a plurality of back beam plates 111, 112, 113, 114 and 115 are bonded to each other, so that the bumper back beam 100 can easily adjust the weight of the bumper back beam 100 according to the total weight of the vehicle. And thus the collision energy absorption capacity can be adjusted.
- the number of the back beam plates 111, 112, 113, 114, and 115 is not limited thereto, and the number of the back beam plates 111, 112, 113, 114, and 115 is various, depending on the intention of the designer.
- the bumper back beam 100 of the vehicle bumper according to the present invention having such a configuration is made by welding or bolting with the fascia 50 or another plate constituting the bumper, and can be easily replaced when damaged.
- the bumper back beam 100 which is a multi-cell structure having a junction structure of the plurality of back beam plates 111, 112, 113, 114, and 115, is formed by adjusting the thickness of the back beam plates 111, 112, 113, 114, and 115 according to the total weight of the vehicle.
- the weight of 100 can be easily adjusted and thus the collision energy absorption capacity can be adjusted.
- the shape and weight of the bumper backbeam 100 are differently applied according to the law according to the weight of the vehicle and the collision characteristics of the vehicle during development of the vehicle.
- the bumper backbeam 100 in the present invention is developed for the four ply of the second to fifth backbeam plate (112, 113, 114, 115) and the bumper backbeam according to the weight when a new vehicle is designed
- the first and second back beam plates 111 and 112 located at the outermost side By adjusting only the thicknesses of the first and second back beam plates 111 and 112 located at the outermost side, the development of the bumper back beam according to the new vehicle can be completed very simply and easily, leading to cost reduction.
- the conventional vehicle by adjusting the thickness of the first back beam plate 111 located on the outermost side of the components of the bumper back beam 100 to absorb pedestrian protection and collision energy during low-speed vehicle collision, the conventional vehicle
- the use of impact energy absorbing foams, such as urethane foam or styrene foam used as a component of the bumper can be eliminated or partially thin, so that the space of the absorbent blowing agent can be usefully used.
- the cross-sectional size occupied by the bumper back beam 100 is greatly increased. It is possible to increase the bending moment inertia (inertia), thereby minimizing the bending of the bumper back beam 100 generated when the vehicle collides with the power pole or collides with the vehicle off-set collision, absorbing collision Energy is also great.
- the overall strength can be made larger than that of the existing back beam structure, thereby increasing the absorbing power of collision energy during vehicle collision, and the first convex. Since the support structure of the beam 101, such as the cell tissue by the unit (110a) as the inner cross section it is possible to prevent the collapse easily to the external stress.
- the bumper back beam 100 has a structure that can increase rigidity while reducing weight while using general steel instead of high-strength steel, and can be absorbed as a whole by stacking a plurality of back beam plates 111, 112, 113, 114, and 115.
- the high elongation compared to high-strength steel can prevent excessive deformation, minimize the possibility of easily breaking or tearing the back beam, and economical at low cost.
- the vehicle bumper according to the present invention has a crash box 200 is connected to the rear surface of the bumper back beam 100, the crash box 200 is coupled to the vehicle body of the bumper back beam 100 by the collision of the vehicle body Minimize damage.
- the crash box 200 sequentially includes a plurality of shape plates 211, 212, 213, and 214 on which a second convex portion 210a is formed on a surface thereof so that the second convex portions 210a are symmetric with each other. By stacking to form a second honeycomb space portion 210.
- the crash box 200 is also formed by the second convex portions 210a formed on the plurality of shape plates 211, 212, 213, and 214 which are stacked symmetrically with each other, so that the second honeycomb space portion 210a is naturally formed, thereby being robust in a collision. Axial collapse will occur. This eliminates the collapse that occurs differently depending on the crash situation.
- the second honeycomb space portion 210a formed in the crash box 200 includes a second convex portion 210a formed in a plurality of shape plates 211, 212, 213, and 214 stacked symmetrically with each other, and the second convex portion ( It is made by a second vertical connecting portion (210b) for connecting the 210a.
- the second convex portion 210a formed on the plurality of shape plates 211, 212, 213, and 214 constituting the crash box 200 is a press forming or roll forming machine using a press mold of steel or aluminum sheet. It is formed by roll forming using ().
- the overall strength can be made larger than that of the conventional crash box structure, thereby increasing the absorbing power of collision energy during a vehicle crash. Since the honeycomb space portion 210 has a support structure such as a cell tissue as an internal cross section, it is possible to prevent collapse easily against external stress.
- the number of shape plates 211, 212, 213, 214 is not limited thereto, and may have various numbers according to the intention of the designer.
- the vehicle bumper according to the present invention is connected to the crash box 200 on the back surface of the bumper back beam 100, each of the honeycomb space portion (110, 210) formed in the crash box 200 and the bumper back beam 100 The arrays are connected in the same direction.
- the first honeycomb space portion 110 of the bumper back beam 100 and the second honeycomb space portion 210 of the crash box 200 are improved in response to the collision force.
- the protection of pedestrians colliding with the vehicle is improved by the buffering action.
- FIG. 9 is a perspective view illustrating another connection state between the bumper back beam and the crash box of the vehicle bumper according to the present invention.
- the crash box with respect to the first honeycomb space part 110 of the bumper back beam 100 is shown.
- the second honeycomb space portion 210 of the 200 may be connected to cross each other, that is, the crash box 200 may be vertically connected to the bumper back beam 100.
- the crash box 200 may have a shear force.
- Figure 10 compares the strength by the three-point bending analysis of the bumper back beam according to the present invention compared with the bumper back beam 1 (general steel back beam) and bumper back beam 2 (type inserted into the reinforcement in the normal steel back beam) according to the prior art It is a graph.
- the bumper back beam of the present invention and the conventional bumper back beam 1 and the bumper back beam 2 are results obtained when viewed at the same weight.
- the bumper back beam 100 formed of a multi-cell structure by the plurality of back beam plates 111, 112, 113, 114, and 115 is compared with the bumper back beam 1 and the bumper back beam 2 according to the prior art.
- the strength is much higher, and this shows that the structure has excellent collision energy absorption capacity.
- Table 1 below shows the energy absorption capacity in the NCAP collision of the vehicle bumper and the conventional vehicle bumper according to the present invention.
- the vehicle bumper of the present invention shows that the collision energy absorbing ability is very superior to the conventional vehicle bumper.
- the test of the two vehicle bumpers was performed under the same weight reference.
- the vehicle bumper is constituted by the bumper back beam 100 and the crash box 200 in which the plurality of plates are stacked on each other and the honeycomb space portion is formed by the convex portion, durability can be greatly improved.
- the strength of the bumper back beam can be increased compared to the existing bumper back beam, and the structure of the honeycomb space part can increase the collision energy absorption power, and it is not easily torn or broken. Not only can it fully absorb the collision energy, but it can also utilize effective structural design and space to make the cross section of bumper back beam and crash box larger and to minimize the bending during collision.
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Abstract
The present invention relates to a vehicle bumper comprising a fascia located on the outside of a vehicle forming the external shape; a plurality of back beam plates on the surface of which first convex parts are formed and layered in order symmetrically relative to said first convex parts to form a first honeycomb space; and a back bumper beam disposed on the rear side of said fascia. Therefore, easy ripping or breaking of the bumper is prevented at the same time as improving the strength and increasing impact absorption energy. Due to the structural disposition of the constituent elements, it also enables a large increase in the efficient utilisation of space, thereby improving its capacity to protect pedestrians, and also giving the bumper the ability to absorb impact energy ranging from low- to high-speed impacts. It enables the adjustment of the impact energy absorption capacity with respect to the overall weight of the vehicle. By making the cross-sectional area of the bumper and the crash box larger, bending in the event of an impact can be minimised and the capacity to absorb the energy of impact can be increased in comparison to said weight.
Description
본 발명은 차량 범퍼에 관한 것으로서, 더욱 상세하게는 강성의 향상과 함께 충돌에너지의 흡수력이 뛰어나고, 쉽게 찢어지거나 깨짐 현상이 발생되지 않으며 보행자와의 추돌시에 보행자 보호성능을 갖는 차량 범퍼에 관한 것이다.The present invention relates to a vehicle bumper, and more particularly, to a vehicle bumper having improved stiffness and excellent absorbing force of collision energy, not easily being torn or broken, and having pedestrian protection when colliding with a pedestrian. .
일반적으로, 차량 범퍼는 차량의 전방 및 후방에 설치되는 것으로서, 다른 차량이나 외부 물체와의 충돌 시 충격을 흡수하여 줌으로써 차량이 받는 충격량을 완화 및 감소시켜주는 기능을 발휘하게 된다.In general, the vehicle bumper is installed at the front and rear of the vehicle, and serves to alleviate and reduce the amount of impact received by the vehicle by absorbing the impact when colliding with another vehicle or an external object.
이러한 종래 차량 범퍼는 도 1에 도시된 바와 같이, 범퍼(1)의 외형을 이루는 페시아(fascia)(10)와, 이 페시아(10) 내측에 배치되는 발포체(20)와, 상기 페시아(10)의 후방측에 위치되고 선단이 상기 발포체(20)에 고정되는 백빔(30)으로 구성되며, 상기 백빔(30)의 후방측에는 백빔(30)을 차체에 결합하기 위한 크래쉬박스(40)가 연결되어 이루어진다.As shown in FIG. 1, such a conventional vehicle bumper includes a fascia 10 forming the outline of the bumper 1, a foam 20 disposed inside the fascia 10, and the fascia 10. It is located on the rear side of the front end is composed of a back beam 30 is fixed to the foam 20, the rear side of the back beam 30 is crash box 40 for coupling the back beam 30 to the vehicle body is connected Is done.
상기 페시아(10)는 차량 범퍼의 외장을 구성함과 동시에 충돌에너지를 최초로 흡수하는 부분으로 플라스틱재질로 많이 구성되고, 상기 발포체(20)는 충돌에너지를 흡수 및 완충시키는 부분으로 발포고무나 스티로폼으로 구성되며, 상기 백빔(30)은 중공을 갖는 프레임구조로 스틸로 많이 구성된다.The fascia 10 is composed of a plastic material as part of the exterior of the vehicle bumper and at the same time absorbs the collision energy, the foam 20 is made of foam rubber or styrofoam as a part to absorb and buffer the collision energy It is composed, the back beam 30 is composed of a lot of steel in a frame structure having a hollow.
또한 크래쉬 박스(40)는 충돌로 인한 차체의 손상을 최소화하기 위한 목적으로 범퍼 백빔 보다 강하나 사이드 멤버보다는 낮은 강도를 가진 것으로 사각단면형상을 가지는 스틸 중공 박스 (steel hollow box) 형태로 형성된다. In addition, the crash box 40 is stronger than the bumper back beam for the purpose of minimizing damage to the vehicle body due to a collision, but has a lower strength than the side members, and is formed in the form of a steel hollow box having a rectangular cross-sectional shape.
이 때, 상기 백빔(30)은 중량을 줄이면서 충돌에너지 흡수력을 높이기 위해 고강도 스틸로 구성되고 있다.At this time, the back beam 30 is made of high strength steel in order to increase the impact energy absorption while reducing the weight.
이러한 종래의 범퍼는 상기 발포체(20)가 일정 부피를 갖도록 형성되는 것으로, 상기 페시아(10)의 내측에서 공간을 많이 차지하게 되어 강도 보강을 위한 백빔(30)의 크기에 제약이 따르는 문제점이 있을 뿐만 아니라, 이러한 백빔(30)의 크기의 제약은 백빔(30)의 단면적 축소를 야기함으로써 충돌 시 쉽게 꺾임이 발생되는 문제점이 있었다.Such a conventional bumper is formed such that the foam 20 has a predetermined volume, and occupies a lot of space inside the fascia 10, which may have a problem in that the size of the back beam 30 for strength reinforcement is restricted. In addition, the limitation of the size of the back beam 30 causes a reduction in the cross-sectional area of the back beam 30, which causes a problem of easily bending during collision.
또한, 백빔(30)을 고강도 스틸로 사용하는 경우 강도를 높일 수는 있으나 연신률(延伸律)이 적어서 충돌 시 과도한 변형이 발생됨은 물론 쉽게 깨지거나 찢어지는 문제점이 발생되고 있으며, 가격이 비싸 경제적이지 못한 단점이 있다.In addition, when the back beam 30 is used as a high-strength steel, the strength can be increased, but the elongation is low, causing excessive deformation during collisions, as well as easily breaking or tearing, which is expensive and economical. There is a disadvantage.
더욱이, 종래의 백빔(30) 구조는 내부 공간이 비어 있는 중공형으로 형성되어 충돌시 쉽게 외형이 찌그러지거나 깨지는 등 문제점이 있었다.In addition, the conventional back beam 30 has a problem in that the internal space is formed in a hollow shape with an empty internal space so that the outer shape is easily crushed or broken during a collision.
이에 따라, 종래 내부 공간이 비어 있는 백빔(30)의 구조를 보강하기 위해 백빔(30)의 내부에 하니컴 코어나 또는 다양한 형태를 갖는 보강재를 삽입하여 차량의 범퍼를 제조하고 있으나, 이와 같이 보강재를 삽입할 경우 보강재의 삽입에 따른 범퍼의 강도를 향상시킬 수는 있으나 보강재의 하중에 의해 중량이 커지는 문제점이 발생되고 차량 유형별 중량에 따른 충돌에너지 흡수능력을 조정하기 어려운 문제점이 있으며, 고속 충돌 시 충돌에너지 흡수능력이 충분히 발휘되지 못하는 문제점이 있다.Accordingly, in order to reinforce the structure of the back beam 30 in which the internal space is empty, a bumper of a vehicle is manufactured by inserting a honeycomb core or a reinforcement having various shapes into the back beam 30. When inserting, it is possible to improve the strength of the bumper according to the insertion of the reinforcement. However, the weight increases due to the load of the reinforcement, and it is difficult to adjust the collision energy absorbing capacity according to the weight of each vehicle type. There is a problem that the energy absorption capacity is not sufficiently exhibited.
뿐만 아니라, 종래 백빔(30)을 차체에 연결하는 수단인 크래쉬박스(40)가 속이 빈 스틸 중공 박스 형태로 제작되어 충돌시 전단력에 대하여 매우 약한 강도를 가져 쉽게 변형되어 충돌에너지를 흡수하는 기능이 매우 적다. 또한, 하중의 방향에 매우 예민한 변형 특성을 가져 차량의 충돌 특성 강건성을 저해하는 주요 부품이 된다.In addition, since the crash box 40, which is a means for connecting the conventional back beam 30 to the vehicle body, is manufactured in the form of a hollow steel hollow box, it has a very weak strength with respect to the shear force at the time of collision, and is easily deformed to absorb crash energy. Very few Moreover, it has a deformation | transformation characteristic which is very sensitive to the direction of a load, and becomes a main part which impairs the crash characteristic robustness of a vehicle.
따라서, 본 발명의 목적은, 강도를 높일 수 있으면서 충돌에너지 흡수력을 증대시킬 수 있도록 하고 쉽게 찢어지거나 깨짐이 발생되지 않게 함은 물론 구성요소의 구조배치에 따른 공간 활용성을 크게 높일 수 있으며 보행자 보호성능을 갖도록 할 뿐만 아니라, 저속에서 고속 충돌까지 충돌에너지 흡수능력을 충분히 발휘할 수 있도록 하고, 차량의 총 중량에 대해 충돌에너지 흡수능력을 용이하게 조정할 수 있도록 하며, 백빔의 크래쉬박스의 단면적을 크게 함으로써 충돌 시 꺾임현상을 최소화할 수 있는 차량 범퍼를 제공하는 것이다.Accordingly, an object of the present invention is to increase the impact energy absorption while increasing the strength, not to be easily torn or broken, as well as to greatly increase the space utilization according to the arrangement of the components and to protect pedestrians In addition to providing performance, it is possible to fully exhibit the collision energy absorption capacity from low speed to high speed collision, to easily adjust the collision energy absorption capacity with respect to the total weight of the vehicle, and to increase the cross-sectional area of the crash box of the back beam. It is to provide a vehicle bumper that can minimize the bending in the event of a collision.
본 발명에 따라, 차량의 외측에 위치하며 외형을 형성하는 페시아와; 표면에 제1볼록부가 형성된 복수의 백빔 플레이트를 상기 제1볼록부가 서로 대칭되게 순차적으로 적층하여 제1하니콤공간부를 형성하며, 상기 페시아의 배면에 배치되는 범퍼 백빔을 포함하는 것을 특징으로 하는 차량 범퍼를 제공한다.According to the invention, the fascia located on the outside of the vehicle and forming an appearance; And a plurality of back beam plates having a first convex portion formed on a surface thereof to sequentially stack the first convex portions symmetrically with each other to form a first honeycomb space portion, and comprising a bumper back beam disposed on a rear surface of the fascia. Provide bumpers.
여기서, 적층되는 상기 복수의 백빔 플레이트는, 차량의 정면쪽 외측방향에서 내측방향으로 갈수록 점차 두꺼워지게 형성되는 것을 특징으로 한다.,Here, the plurality of stacked back beam plate is characterized in that it is formed to gradually become thicker toward the inner side from the front side outward direction of the vehicle,
상기 범퍼 백빔(100)에 형성된 제1하니콤공간부는, 서로 대칭되게 적층되는 상기 복수의 백빔 플레이트에 각각 형성된 제1볼록부와, 상기 제1볼록부를 연결하는 제1상하연결부에 의해 이루어지는 것을 특징으로 한다.The first honeycomb space portion formed in the bumper backbeam 100 may include a first convex portion formed on each of the plurality of backbeam plates stacked symmetrically with each other, and a first vertical connection portion connecting the first convex portion. It is done.
표면에 제2볼록부가 형성된 복수의 형상플레이트를 상기 제2볼록부가 서로 대칭되게 순차적으로 적층하여 제2하니콤공간부를 형성하며, 상기 범퍼 백빔의 배면에 연결되어 상기 범퍼 백빔을 차량의 차체에 결합하는 크래쉬박스를 더 포함하는 것을 특징으로 한다.A plurality of shape plates having a second convex portion formed on a surface thereof are sequentially stacked symmetrically with the second convex portion to form a second honeycomb space portion, and connected to a rear surface of the bumper back beam to couple the bumper back beam to the vehicle body of the vehicle. It characterized in that it further comprises a crash box.
상기 크래쉬박스에 형성된 제2하니콤공간부는, 서로 대칭되게 적층되는 상기 복수의 형상플레이트에 형성된 제2볼록부와, 상기 제2볼록부를 연결하는 제2상하연결부에 의해 이루어지는 것을 특징으로 한다.The second honeycomb space portion formed in the crash box is formed by a second convex portion formed in the plurality of shape plates stacked symmetrically with each other, and a second vertical connecting portion connecting the second convex portion.
상기 크래쉬박스는 상기 범퍼 백빔에 수직하게 연결됨으로써, 크래쉬박스는 전단력에 강한 특성을 갖게 된다.The crash box is vertically connected to the bumper backbeam, whereby the crash box has a strong resistance to shear force.
본 발명을 통하여, 차량 범퍼를 구성하는 범퍼 백빔 및 크래쉬박스의 형상이 복수의 플레이트가 서로 접하여 용접되되, 이들 플레이트에 형성된 볼록부들이 서로 대칭되게 적층되어 구성됨으로써 볼록부들의 대칭 접합에 의해 하니콤공간부가 형성되기 때문에, 차량 범퍼의 강도를 기존의 범퍼에 비해 높일 수 있다.Through the present invention, the shape of the bumper back beam and the crash box constituting the vehicle bumper is welded by a plurality of plates in contact with each other, the convex portions formed on these plates are configured to be symmetrically laminated to each other by the symmetrical joining of the convex portions Since the space portion is formed, the strength of the vehicle bumper can be increased as compared with the existing bumper.
또한, 여러 개의 플레이트에 의해 범퍼백빔과 크래쉬박스가 충돌에너지 흡수력을 증대시킬 수 있고 쉽게 찢어지거나 깨짐이 발생하지 않으며 보행자 보호는 물론 저속에서 고속 충돌까지 충돌에너지 흡수 능력을 충분히 발휘할 수 있다.In addition, the bumper back beam and the crash box can increase the collision energy absorption force by multiple plates, do not easily be torn or broken, and can fully exhibit the collision energy absorption capability from low speed to high speed collision as well as pedestrian protection.
또한, 효과적인 구조설계 및 공간을 활용할 수 있어 범퍼 백빔은 물론 크래쉬박스의 단면을 크게 할 수 있고 충돌 시 꺾임현상을 최소화 할 수 있다.In addition, effective structural design and space can be utilized, so that the cross section of the crash box as well as the bumper back beam can be increased, and the bending phenomenon can be minimized in the event of a collision.
또한, 하니콤공간부가 형성되는 범퍼백빔과 크래쉬박스에 의해 차량의 총 중량에 대해 충돌에너지 흡수능력을 용이하게 조정할 수 있으며, 다수의 플레이트를 적층 구성하여 범퍼백빔과 크래쉬박스를 구성함으로써, 새로운 차량의 설계 시 신차에 대한 범퍼백빔 개발의 대응을 빠르게 행할 수 있다.In addition, the bumper back beam and the crash box in which the honeycomb space part is formed can easily adjust the collision energy absorbing capacity with respect to the total weight of the vehicle, and the bumper back beam and the crash box are formed by stacking a plurality of plates to form a new vehicle. In the design of the vehicle, it is possible to quickly respond to the development of the bumper back beam for the new car.
도 1은 종래의 차량 범퍼 구조를 나타낸 구성도,1 is a configuration diagram showing a conventional vehicle bumper structure,
도 2는 종래의 차량 범퍼에 장착되는 범퍼 백빔과 크래쉬박스의 연결상태를 나타낸 사시도,2 is a perspective view illustrating a connection state of a bumper back beam and a crash box mounted on a conventional vehicle bumper;
도 3은 본 발명에 따른 차량 범퍼의 사시도,3 is a perspective view of a vehicle bumper according to the present invention;
도 4는 도 3의 분해사시도,4 is an exploded perspective view of FIG. 3;
도 5는 도 3의 범퍼 백빔의 사시도,5 is a perspective view of the bumper backbeam of FIG. 3, FIG.
도 6은 도 5의 종단면도,6 is a longitudinal sectional view of FIG. 5;
도 7은 도 3의 범퍼백빔과 크래쉬박스가 연결상태의 사시도,7 is a perspective view of the bumper back beam and the crash box of FIG. 3 connected to each other;
도 8은 도 7의 A-A선에 따른 단면도,8 is a cross-sectional view taken along the line A-A of FIG.
도 9는 본 발명에 따른 차량 범퍼의 범퍼 백빔과 크래쉬박스의 다른 연결상태를 나타낸 사시도,9 is a perspective view showing another connection state of the bumper back beam and the crash box of the vehicle bumper according to the present invention;
도 10은 본 발명에 따른 차량 범퍼의 충돌에너지 흡수능력을 비교한 그래프이다.10 is a graph comparing the collision energy absorption capacity of the vehicle bumper according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
50 : 페시아 100 : 범퍼 백빔50: Pescia 100: Bumper Back Beam
110 : 제1하니콤공간부 110a : 제1볼록부110: first honeycomb space portion 110a: first convex portion
110b : 제1상하연결부 111, 112, 113, 114, 115 : 백빔 플레이트110b: the first vertical connecting portion 111, 112, 113, 114, 115: the back beam plate
200 : 크래쉬박스 210 : 제2하니콤공간부200: crash box 210: second honeycomb space part
210a : 제2볼록부 210b : 제2상/하연결부210a: second convex portion 210b: second upper / lower connecting portion
211, 212, 213, 214 : 형상플레이트211, 212, 213, 214: shape plate
이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 3 내지 도 8에는 본 발명에 따른 차량 범퍼가 도시되어 있다. 이들 도면에 도시된 바와 같이 본 발명에 따른 차량 범퍼는 페시아(50)와, 범퍼 백빔(100)을 가진다.3 to 8 show a vehicle bumper according to the invention. As shown in these figures, a vehicle bumper according to the present invention has a fascia 50 and a bumper backbeam 100.
페시아(50)는 차량의 외측에 위치하며, 차량 범퍼의 외장을 구성함과 동시에 충돌에너지를 최초로 흡수하는 부분으로, 전방 일측면이 개방된 하우징의 형상을 가지며, 페시아(50)의 배면에는 범퍼 백빔(100)을 삽입 처리할 수 있는 수용공간이 형성된다.The fascia 50 is located on the outside of the vehicle, constitutes the exterior of the vehicle bumper, and simultaneously absorbs collision energy for the first time. The fascia 50 has a shape of a housing in which one side of the front is open, and a bumper at the rear of the fascia 50. An accommodation space for inserting the back beam 100 is formed.
범퍼 백빔(100)은 플레이트의 길이방향으로 연속 반복되는 벤딩 처리에 의해 제1볼록부(110a)가 형성된 복수의 백빔 플레이트(111,112,113,114,115)로 이루어진다. 이하, 설명의 편리상, 차량 차체의 가장 외측으로부터 내측으로 향할수록 제1백빔 플레이트(111), 제2백빔 플레이트(112), 제3백빔 플레이트(113), 제4백빔 플레이트(114), 제5백빔 플레이트(115)라고 칭한다.The bumper back beam 100 includes a plurality of back beam plates 111, 112, 113, 114, and 115 on which the first convex portion 110a is formed by a continuous bending process in the longitudinal direction of the plate. Hereinafter, for convenience of explanation, the first white beam plate 111, the second white beam plate 112, the third white beam plate 113, the fourth back beam plate 114, and the first toward the inner side of the vehicle body from the outermost to the inner side. The five hundred beam plate 115 is called.
이들 백빔 플레이트(111,112,113,114,115)는 각 제1볼록부(110a)가 서로 대칭되게 순차적으로 적층하며 용접 결합되어, 다중 셀(multi-cell)을 형성하는 구조체 즉, 제1하니콤공간부(110)를 형성하는 구조체로 이루어진다.Each of the back beam plates 111, 112, 113, 114, and 115 is formed by sequentially stacking the first convex portions 110a symmetrically and welded to form a structure that forms a multi-cell, that is, the first honeycomb space portion 110. It consists of a structure to form.
즉, 범퍼 백빔(100)은 제1 내지 제5백빔 플레이트(111,112,113,114,115)가 차량의 정면쪽 외측방향에서 내측방향으로 배열되어 서로 밀착 접촉되고, 특히 각 제1볼록부(110a)의 밀착에 의해 외부 응력(충돌에너지)에 대해 휨(굽힘)으로 지탱하는 작용을 하는 보(101)의 지지구조인 제1하니콤공간부(110)를 내부에 형성하게 된다.That is, the bumper back beam 100 is the first to fifth back beam plate (111, 112, 113, 114, 115) is arranged in close contact with each other in the inward direction of the front side of the vehicle, and in close contact with each other, in particular by the close contact of each first convex portion (110a) The first honeycomb space portion 110, which is a support structure of the beam 101, which acts to bend (bending) against stress (collision energy), is formed therein.
상기 범퍼 백빔(100)에 형성된 제1하니콤공간부(110a)는, 서로 대칭되게 적층되는 복수의 백빔 플레이트(111,112,113,114,115)에 각각 형성된 제1볼록부(110a)와, 상기 제1볼록부(110a)를 연결하는 제1상하연결부(110b)에 의해 이루어진다.The first honeycomb space portion 110a formed in the bumper backbeam 100 may include first convex portions 110a formed on a plurality of backbeam plates 111, 112, 113, 114, and 115 that are symmetrically stacked with each other, and the first convex portion 110a. ) Is made by the first vertical connecting portion (110b) for connecting.
상기, 범퍼 백빔(100)은 복수의 백빔 플레이트(111,112,113,114,115)가 차량의 정면쪽 외측방향에서 내측방향으로 배열되어 서로 밀착 접촉되고, 더욱이 각 백빔 플레이트(111,112,113,114,115)에 볼록지게 돌출형성된 제1볼록부(110a)들이 서로 대칭되게 밀착 구성되어 있음에 따라, 충돌에너지와 같은 외부 응력에 대하여 굽혀지는 휨 작용이 발생되는 제1하니콤공간부(110)가 자연스럽게 형성된다.The bumper back beam 100 has a plurality of back beam plates 111, 112, 113, 114, and 115 arranged inward from the front side of the vehicle to be in intimate contact with each other, and further include a first convex portion protrudingly formed on each of the back beam plates 111, 112, 113, 114, and 115. As the 110a) are configured to be symmetrical to each other, the first honeycomb space portion 110 in which a bending action is bent to an external stress such as impact energy is naturally formed.
이에 따라, 범퍼 백빔(100)은 볼록부(110a)를 갖는 복수의 백빔 플레이트(111,112,113,114,115)의 결합에 의해 종래의 범퍼 백빔과는 달리 별도의 보강재를 삽입하여 강성을 보강하는 유형이 아닌 범퍼 백빔(100) 자체가 표면에서부터 내부까지 세포조직과 같은 유형으로 유기적으로 강한 결합관계를 갖는 제1하니콤공간부(110)가 자연스럽게 형성되어 내구성의 향상과 함께 충돌 시에 받는 충격의 완화작용 및 범퍼의 깨짐현상이나 틀어짐 현상 등을 방지하여 준다.Accordingly, the bumper back beam 100 is a type of bumper back beam that is not a type that reinforces rigidity by inserting a separate reinforcement unlike a conventional bumper back beam by combining a plurality of back beam plates 111, 112, 113, 114, and 115 having convex portions 110a. 100) The first honeycomb space portion 110, which has an organically strong bonding relationship in the same type as the cell tissue from its surface to the inside, is naturally formed, thereby improving the durability and reducing the shock and impact of the bumper. Prevents cracking and distorting.
여기서, 범퍼 백빔(100)을 구성하는 복수의 백빔 플레이트(111,112,113,114,115)는 모두 스틸 재질 또는 알루미늄 재질로 이루어지며, 이 재질이 포함된 금속합금으로도 형성될 수 있다. 또한, 각 백빔 플레이트(111,112,113,114,115)가 갖는 제1볼록부(110a)는 프레스 금형(press mould) 또는 롤 포밍기(roll forming machine)를 통해 프레스 성형 (stamping) 또는 롤 포밍(roll forming)으로 형성된다.Here, the plurality of back beam plates 111, 112, 113, 114, and 115 constituting the bumper back beam 100 may be made of a steel material or an aluminum material, and may be formed of a metal alloy including the material. In addition, the first convex portion 110a of each of the back beam plates 111, 112, 113, 114, and 115 is formed by press molding or roll forming through a press mold or a roll forming machine. .
한편, 범퍼 백빔(100)을 구성하는 복수의 백빔 플레이트(111,112,113,114,115)는, 차량의 정면쪽 외측방향에서 내측방향으로 갈수록 점차 두꺼워지도록 형성 즉, 제1백빔 플레이트(111)로부터 제5백빔 플레이트(115)로 갈수록 플레이트의 두께를 점차적으로 높여 구성함으로써, 보행자 보호는 물론 저속 충돌에서부터 고속 충돌까지 충돌에너지를 충분하게 흡수할 수 있도록 한다.Meanwhile, the plurality of back beam plates 111, 112, 113, 114 and 115 constituting the bumper back beam 100 are formed to gradually become thicker from the front outer side of the vehicle toward the inner side, that is, the fifth back beam plate 115 from the first back beam plate 111. By gradually increasing the thickness of the plate to the), it is possible to sufficiently absorb the collision energy from low-speed collision to high-speed collision as well as pedestrian protection.
예를 들어, 범퍼 백빔(100)를 구성하는 복수의 백빔 플레이트(111,112,113,114,115) 중 차량 정면쪽 최외측에 위치한 제1백빔 플레이트(111)는 0.5mm 두께로 하여, 보행자 보호와 함께 저속 충돌시 차량의 손상을 방지하는 역할을 하며, 제1백빔 플레이트(111)는 다른 백빔 플레이트(112,113,114,115)에 비해 두께를 낮춤으로써 낮은 하중에서 변형하여 충격에너지를 흡수할 수 있도록 한 것이며, 이를 통해 보행자 보호성능을 발휘할 수 있도록 한다.For example, among the plurality of back beam plates 111, 112, 113, 114, and 115 constituting the bumper back beam 100, the first back beam plate 111 located at the outermost side of the front side of the vehicle has a thickness of 0.5 mm, so that the vehicle is protected at a low speed collision with pedestrian protection. It serves to prevent damage, and the first back beam plate 111 is to reduce the thickness compared to the other back beam plate (112, 113, 114, 115) to be able to absorb the impact energy by transforming at a low load, thereby exhibiting pedestrian protection performance To be able.
또한, 제1백빔 플레이트(111)의 후방에 위치한 제2백빔 플레이트(112)는 0.6∼0.7mm 두께로 하여, 중속의 차량 충돌시 충돌에너지를 흡수하는 역할을 한다.In addition, the second back beam plate 112 positioned behind the first back beam plate 111 has a thickness of 0.6 to 0.7 mm, and serves to absorb collision energy during a vehicle collision at a medium speed.
제3백빔 플레이트(113)는 0.6∼1mm 두께로 하여. 고속의 차량 충돌시 충돌에너지를 흡수한다.The third white beam plate 113 is 0.6 to 1 mm thick. Absorbs crash energy during high-speed vehicle crashes.
뿐만 아니라, 제4백빔 플레이트(114)는 0.6∼1.5mm 두께로 하여, 고속의 차량 충돌시 충돌에너지를 흡수한다.In addition, the fourth back beam plate 114 has a thickness of 0.6 to 1.5 mm to absorb collision energy during high-speed vehicle collision.
차량 정면쪽 최내측에 위치하는 제5백빔 플레이트(115)는 0.6∼1.5mm 두께로 하여, 고속의 차량 충돌시 충돌에너지를 흡수할 수 있도록 구성한다. The fifth back beam plate 115, located at the innermost side of the vehicle front side, has a thickness of 0.6 to 1.5 mm and is configured to absorb collision energy during high-speed vehicle collision.
이와 같이, 범퍼 백빔(100)은 복수의 백빔 플레이트(111,112,113,114,115)가 서로 접합되는 접합구조로 구성됨으로써, 상기 범퍼 백빔(100)은 차량의 총 중량에 따라 범퍼 백빔(100)의 중량을 쉽게 조정할 수 있고 이에 따른 충돌에너지 흡수능력을 조정할 수 있다.As such, the bumper back beam 100 is configured in a bonding structure in which a plurality of back beam plates 111, 112, 113, 114 and 115 are bonded to each other, so that the bumper back beam 100 can easily adjust the weight of the bumper back beam 100 according to the total weight of the vehicle. And thus the collision energy absorption capacity can be adjusted.
여기서, 백빔 플레이트(111,112,113,114,115)의 개수는 이에 한정되지 않으며, 설계자의 의도에 따라 다양한 개수를 가지며, 바람직하게는 2∼6개의 수량을 갖는 것이 바람직하다.Here, the number of the back beam plates 111, 112, 113, 114, and 115 is not limited thereto, and the number of the back beam plates 111, 112, 113, 114, and 115 is various, depending on the intention of the designer.
이러한 구성으로 이루어진 본 발명에 따른 차량 범퍼의 범퍼 백빔(100)은 페시아(50) 또는 범퍼를 구성하는 다른 플레이트와 용접 또는 볼트에 의한 결합을 이루게 되며, 손상시 용이하게 교체 사용할 수 있게 된다.The bumper back beam 100 of the vehicle bumper according to the present invention having such a configuration is made by welding or bolting with the fascia 50 or another plate constituting the bumper, and can be easily replaced when damaged.
이와 같이 복수로 구비된 백빔 플레이트(111,112,113,114,115)의 접합구조를 갖는 다중 셀(multi-cell) 구조체인 범퍼 백빔(100)은 차량의 총 중량에 따라 백빔 플레이트(111,112,113,114,115)의 두께를 조정함으로써 범퍼 백빔(100)의 중량을 쉽게 조정할 수 있고 이에 따른 충돌에너지 흡수능력을 조정할 수 있게 된다.As described above, the bumper back beam 100, which is a multi-cell structure having a junction structure of the plurality of back beam plates 111, 112, 113, 114, and 115, is formed by adjusting the thickness of the back beam plates 111, 112, 113, 114, and 115 according to the total weight of the vehicle. The weight of 100) can be easily adjusted and thus the collision energy absorption capacity can be adjusted.
즉, 일반적으로 차량의 개발시 차량의 무게와 차량의 충돌 특성에 따라 범퍼 백빔(100)의 형상과 중량이 법 규정에 맞도록 달리 적용되고 있고 이로 인하여 그때 상황마다 설계 및 생산 측면에서 다시 개발이 수행되어야 함으로 많은 비용이 발생되고 있는데, 본 발명에서의 범퍼 백빔(100)은 제2 내지 제5백빔 플레이트(112,113,114,115)의 4겹에 대하여 범퍼 백빔을 개발하여 두고 새로운 차량이 설계될 때에 중량에 따라 최 외측에 위치되는 제1 및 제2백빔 플레이트(111,112)의 두께만을 조정함으로써 신차에 따른 범퍼 백빔의 개발을 아주 간단하면서도 용이하게 완료할 수 있게 되며, 비용절감을 이끌어낼 수 있게 된다.That is, in general, the shape and weight of the bumper backbeam 100 are differently applied according to the law according to the weight of the vehicle and the collision characteristics of the vehicle during development of the vehicle. There is a lot of cost incurred to be carried out, the bumper backbeam 100 in the present invention is developed for the four ply of the second to fifth backbeam plate (112, 113, 114, 115) and the bumper backbeam according to the weight when a new vehicle is designed By adjusting only the thicknesses of the first and second back beam plates 111 and 112 located at the outermost side, the development of the bumper back beam according to the new vehicle can be completed very simply and easily, leading to cost reduction.
본 발명에서는 범퍼 백빔(100)의 구성요소 중에서 최 외측에 위치되는 제1백빔 플레이트(111)의 두께 조정을 통해 보행자 보호와 저속의 차량 충돌시 충돌에너지를 흡수하도록 사용함에 따라, 기존에 일반적인 차량에서 범퍼의 구성요소로 사용되는 우레탄폼 또는 스티렌폼 등의 충돌에너지 흡수용 발포체의 사용을 제거할 수 있거나 부분적으로 얇게 사용할 수 있어 흡수용 발포제의 공간을 유용하게 활용할 수 있게 된다.In the present invention, by adjusting the thickness of the first back beam plate 111 located on the outermost side of the components of the bumper back beam 100 to absorb pedestrian protection and collision energy during low-speed vehicle collision, the conventional vehicle The use of impact energy absorbing foams, such as urethane foam or styrene foam used as a component of the bumper can be eliminated or partially thin, so that the space of the absorbent blowing agent can be usefully used.
즉, 종래의 차량 범퍼의 발포체 공간 부분에 대하여, 발포체를 제거하거나 발포체를 제1백빔 플레이트(111)와 제2백빔 플레이트(112)사이에 넣음으로써, 범퍼 백빔(100)이 차지하는 단면 크기를 크게 할 수 있어 벤딩모멘트 관성(inertia)을 크게 할 수 있으며, 이에 의해 차량이 전봇대에 충돌하거나 차량 대 차량 OFFSET 충돌하는 경우 발생되는 범퍼 백빔(100)의 꺾임현상을 최소화시킬 수 있게 되며, 흡수하는 충돌에너지도 크게 된다. That is, with respect to the foam space portion of the conventional vehicle bumper, by removing the foam or inserting the foam between the first back beam plate 111 and the second back beam plate 112, the cross-sectional size occupied by the bumper back beam 100 is greatly increased. It is possible to increase the bending moment inertia (inertia), thereby minimizing the bending of the bumper back beam 100 generated when the vehicle collides with the power pole or collides with the vehicle off-set collision, absorbing collision Energy is also great.
또한, 본 발명에서는 복수의 백빔 플레이트(111,112,113,114,115) 적층에 의해 멤버식 구조체를 형성함에 따라 전체 강도를 기존의 백빔 구조보다 크게 할 수 있어 차량 충돌시 충돌에너지의 흡수력을 증대시킬 수 있으며, 제1볼록부(110a)에 의한 세포조직과 같은 보(101)의 지지구조를 내부 단면으로 갖기 때문에 외부 응력에 대해 쉽게 붕괴되는 것을 방지할 수 있게 된다.In addition, in the present invention, as the member structure is formed by stacking the plurality of back beam plates 111, 112, 113, 114, and 115, the overall strength can be made larger than that of the existing back beam structure, thereby increasing the absorbing power of collision energy during vehicle collision, and the first convex. Since the support structure of the beam 101, such as the cell tissue by the unit (110a) as the inner cross section it is possible to prevent the collapse easily to the external stress.
나아가, 본 발명에서의 범퍼 백빔(100)은 고강도 스틸이 아닌 일반적인 스틸을 사용하면서도 중량을 줄이면서 강성을 증대시킬 수 있는 구조를 갖는 것으로, 복수의 백빔 플레이트(111,112,113,114,115)를 적층함에 따라 전체적으로 흡수할 수 있는 충돌 에너지량을 늘릴 수 있을 뿐만 아니라 고강도 스틸에 비해 연신률이 높아 과도한 변형을 방지할 수 있고 백빔이 쉽게 깨지거나 찢어지는 현상을 극히 최소화할 수 있게 되며, 저비용으로 경제성을 갖게 된다.Furthermore, the bumper back beam 100 according to the present invention has a structure that can increase rigidity while reducing weight while using general steel instead of high-strength steel, and can be absorbed as a whole by stacking a plurality of back beam plates 111, 112, 113, 114, and 115. In addition to increasing the amount of collision energy that can be achieved, the high elongation compared to high-strength steel can prevent excessive deformation, minimize the possibility of easily breaking or tearing the back beam, and economical at low cost.
또한, 본 발명에 따른 차량 범퍼는 범퍼 백빔(100)의 배면에 크래쉬박스(200)가 연결되어 있으며, 크래쉬박스(200)는 범퍼 백빔(100)을 차량의 차체에 결합하여 충돌로 인한 차체의 손상을 최소화한다.In addition, the vehicle bumper according to the present invention has a crash box 200 is connected to the rear surface of the bumper back beam 100, the crash box 200 is coupled to the vehicle body of the bumper back beam 100 by the collision of the vehicle body Minimize damage.
도 7 및 도 8에 도시된 바와 같이, 크래쉬박스(200)는 표면에 제2볼록부(210a)가 형성된 다수의 형상플레이트(211,212,213,214)를 상기 제2볼록부(210a)가 서로 대칭되게 순차적으로 적층하여 제2하니콤공간부(210)를 형성한다.As shown in FIG. 7 and FIG. 8, the crash box 200 sequentially includes a plurality of shape plates 211, 212, 213, and 214 on which a second convex portion 210a is formed on a surface thereof so that the second convex portions 210a are symmetric with each other. By stacking to form a second honeycomb space portion 210.
즉, 크래쉬박스(200) 역시, 서로 대칭되게 적층되는 복수의 형상플레이트(211,212,213,214)에 형성된 제2볼록부(210a)들에 의해 자연스럽게 제2하니콤공간부(210a)가 형성됨으로써, 충돌시 강건한 축방향 붕괴가 일어나게 된다. 이로 인하여 충돌 상황에 따라 다르게 일어나는 붕괴 현상이 없어진다.That is, the crash box 200 is also formed by the second convex portions 210a formed on the plurality of shape plates 211, 212, 213, and 214 which are stacked symmetrically with each other, so that the second honeycomb space portion 210a is naturally formed, thereby being robust in a collision. Axial collapse will occur. This eliminates the collapse that occurs differently depending on the crash situation.
상기 크래쉬박스(200)에 형성되는 제2하니콤공간부(210a)는, 서로 대칭되게 적층구성되는 다수의 형상플레이트(211,212,213,214)에 형성된 제2볼록부(210a)와, 이 제2볼록부(210a)를 연결하는 제2상하연결부(210b)에 의해 이루어진다.The second honeycomb space portion 210a formed in the crash box 200 includes a second convex portion 210a formed in a plurality of shape plates 211, 212, 213, and 214 stacked symmetrically with each other, and the second convex portion ( It is made by a second vertical connecting portion (210b) for connecting the 210a.
크래쉬박스(200)를 구성하는 복수의 형상플레이트(211,212,213,214)에 형성되는 제2볼록부(210a)는, 스틸이나 알루미늄 판재를 프레스 금형(press mould)을 이용하는 프레스 성형 또는 롤 포밍기(roll forming machine)를 이용한 롤 포밍(roll forming)에 의해 형성된다.The second convex portion 210a formed on the plurality of shape plates 211, 212, 213, and 214 constituting the crash box 200 is a press forming or roll forming machine using a press mold of steel or aluminum sheet. It is formed by roll forming using ().
복수의 형상플레이트(211,212,213,214)의 적층에 의해 접합 구성되어 제2하니콤공간부(210)가 자연스럽게 형성됨에 따라, 전체 강도를 종래 크래쉬박스 구조보다 크게 할 수 있어 차량 충돌 시 충돌에너지의 흡수력을 증대시킬 수 있으며, 하니콤공간부(210)에 의해 세포조직과 같은 지지구조를 내부 단면으로 갖기 때문에 외부 응력에 대해 쉽게 붕괴되는 것을 방지할 수 있게 된다.As the second honeycomb space portion 210 is naturally formed by laminating a plurality of shape plates 211, 212, 213, and 214, the overall strength can be made larger than that of the conventional crash box structure, thereby increasing the absorbing power of collision energy during a vehicle crash. Since the honeycomb space portion 210 has a support structure such as a cell tissue as an internal cross section, it is possible to prevent collapse easily against external stress.
여기서, 형상플레이트(211,212,213,214)의 개수는 이에 한정되지 않으며, 설계자의 의도에 따라 다양한 개수를 가질 수 있다.Here, the number of shape plates 211, 212, 213, 214 is not limited thereto, and may have various numbers according to the intention of the designer.
한편, 본 발명에 따른 차량 범퍼는 범퍼 백빔(100)의 배면에 크래쉬박스(200)를 연결하되, 상기 크래쉬박스(200)와 범퍼 백빔(100)에 형성되는 각 하니콤공간부(110,210)의 배열을 동일방향으로 위치하도록 연결되어 있다.On the other hand, the vehicle bumper according to the present invention is connected to the crash box 200 on the back surface of the bumper back beam 100, each of the honeycomb space portion (110, 210) formed in the crash box 200 and the bumper back beam 100 The arrays are connected in the same direction.
이에 따라, 차량의 충돌사고 발생시에 범퍼 백빔(100)의 제1하니콤공간부(110)와 크래쉬박스(200)의 제2하니콤공간부(210)에 의해 충돌력에 대한 대응력이 향상되고, 완충작용에 의해 차량에 추돌하는 보행자의 보호능력이 향상된다.Accordingly, when the collision accident of the vehicle occurs, the first honeycomb space portion 110 of the bumper back beam 100 and the second honeycomb space portion 210 of the crash box 200 are improved in response to the collision force. In addition, the protection of pedestrians colliding with the vehicle is improved by the buffering action.
또한, 도 9는 본 발명에 따른 차량 범퍼의 범퍼 백빔과 크래쉬박스의 다른 연결상태를 나타낸 사시도로서, 도시된 바와 같이 상기 범퍼 백빔(100)의 제1하니콤공간부(110)에 대하여 크래쉬박스(200)의 제2하니콤공간부(210)를 서로 교차되도록 연결 즉, 크래쉬박스(200)를 범퍼 백빔(100)에 수직하게 연결 구성할 수 있으며, 이 경우에는 크래쉬박스(200)가 전단력에 강함으로써, 축방향 붕괴(axial collapse)가 일어나도록 하여 충돌 에너지 흡수 능력을 향상시키고, 충돌 방향에 따른 붕괴 모드의 일관성 향상으로 인하여 차량의 충돌 성능 변화를 최소화한다.FIG. 9 is a perspective view illustrating another connection state between the bumper back beam and the crash box of the vehicle bumper according to the present invention. As illustrated, the crash box with respect to the first honeycomb space part 110 of the bumper back beam 100 is shown. The second honeycomb space portion 210 of the 200 may be connected to cross each other, that is, the crash box 200 may be vertically connected to the bumper back beam 100. In this case, the crash box 200 may have a shear force. By being strong, the axial collapse occurs to improve the collision energy absorption capacity and minimize the change in the collision performance of the vehicle due to the improved consistency of the collapse mode along the collision direction.
한편, 도 10은 본 발명에 의한 범퍼 백빔의 3점 굽힘해석에 의한 강도를 종래기술에 의한 범퍼 백빔1(일반 스틸 백빔)과 범퍼 백빔2(일반 스틸 백빔에 보강재에 삽입된 유형)와 비교한 그래프이다.On the other hand, Figure 10 compares the strength by the three-point bending analysis of the bumper back beam according to the present invention compared with the bumper back beam 1 (general steel back beam) and bumper back beam 2 (type inserted into the reinforcement in the normal steel back beam) according to the prior art It is a graph.
이 때, 본 발명의 범퍼 백빔과 종래의 범퍼 백빔1 및 범퍼 백빔2는 동일 중량으로 보았을 때 이루어진 결과치이다.At this time, the bumper back beam of the present invention and the conventional bumper back beam 1 and the bumper back beam 2 are results obtained when viewed at the same weight.
도 10에 도시된 바와 같이, 본 발명에 있어 복수의 백빔 플레이트(111,112,113,114,115)에 의한 다중 셀(multi-cell) 구조체로 이루어진 범퍼 백빔(100)이 종래 기술에 의한 범퍼 백빔1과 범퍼 백빔2에 비해 강도가 훨씬 뛰어남을 보여주고 있으며, 이에 의해 충돌에너지 흡수능력이 우수한 구조체임을 보여주고 있다.As shown in FIG. 10, in the present invention, the bumper back beam 100 formed of a multi-cell structure by the plurality of back beam plates 111, 112, 113, 114, and 115 is compared with the bumper back beam 1 and the bumper back beam 2 according to the prior art. The strength is much higher, and this shows that the structure has excellent collision energy absorption capacity.
또한, 아래의 표 1에는 본 발명에 따른 차량 범퍼와 종래 차량 범퍼의 NCAP 충돌에서의 에너지 흡수 능력을 보여준다.In addition, Table 1 below shows the energy absorption capacity in the NCAP collision of the vehicle bumper and the conventional vehicle bumper according to the present invention.
도시된 바와 같이, 본 발명의 차량 범퍼는 종래의 차량 범퍼에 비해 충돌에너지 흡수 능력이 매우 우수함을 보여 준다. 여기서, 두 차량 범퍼의 시험은 동일한 무게의 기준하에서 행하였다.As shown, the vehicle bumper of the present invention shows that the collision energy absorbing ability is very superior to the conventional vehicle bumper. Here, the test of the two vehicle bumpers was performed under the same weight reference.
표 1
Table 1
구 분 | 종래 차량 범퍼(도 2참조) | 본 발명 차량 범퍼(도 7참조) |
범퍼 폭(mm) | 37 | 90 |
NACP시 흡수에너지(Nm) | 1700 | 4800 |
division | Conventional vehicle bumpers (see Figure 2) | Vehicle bumper of the present invention (see FIG. 7) |
Bumper Width (mm) | 37 | 90 |
Absorbed energy at NACP (Nm) | 1700 | 4800 |
이와 같이, 본 발명에 따르면, 복수의 플레이트가 서로 적층되고 볼록부에 의해 하니콤공간부가 형성된 범퍼 백빔(100)과 크래쉬박스(200)에 의해 차량 범퍼가 구성되기 때문에, 내구성이 크게 향상될 수 있어 범퍼 백빔의 강도를 기존의 범퍼 백빔에 비해 높일 수 있고, 하니콤공간부에 의한 구조에 의해 충돌에너지 흡수력을 증대시킬 수 있고 쉽게 찢어지거나 깨짐이 발생하지 않으며 보행자 보호는 물론 저속에서 고속 충돌까지 충돌에너지 흡수 능력을 충분히 발휘할 수 있을 뿐만 아니라, 효과적인 구조설계 및 공간을 활용할 수 있어 범퍼 백빔과 크래쉬박스의 단면을 크게 할 수 있고 충돌 시 꺾임현상을 최소화 할 수 있다.As such, according to the present invention, since the vehicle bumper is constituted by the bumper back beam 100 and the crash box 200 in which the plurality of plates are stacked on each other and the honeycomb space portion is formed by the convex portion, durability can be greatly improved. The strength of the bumper back beam can be increased compared to the existing bumper back beam, and the structure of the honeycomb space part can increase the collision energy absorption power, and it is not easily torn or broken. Not only can it fully absorb the collision energy, but it can also utilize effective structural design and space to make the cross section of bumper back beam and crash box larger and to minimize the bending during collision.
본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서, 그러한 수정예 또는 변형예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.
Claims (6)
- 차량의 외측에 위치하며 외형을 형성하는 페시아와;A fascia located outside the vehicle and forming an appearance;표면에 제1볼록부가 형성된 복수의 백빔 플레이트를 상기 제1볼록부가 서로 대칭되게 순차적으로 적층하여 제1하니콤공간부를 형성하며, 상기 페시아의 배면에 배치되는 범퍼 백빔을 포함하는 것을 특징으로 하는 차량 범퍼.And a plurality of back beam plates having a first convex portion formed on a surface thereof to sequentially stack the first convex portions symmetrically with each other to form a first honeycomb space portion, and comprising a bumper back beam disposed on a rear surface of the fascia. bumper.
- 제1항에 있어서,The method of claim 1,적층되는 상기 복수의 백빔 플레이트는, 차량의 정면쪽 외측방향에서 내측방향으로 갈수록 점차 두꺼워지게 형성되는 것을 특징으로 하는 차량 범퍼.The plurality of back beam plates to be stacked, the vehicle bumper, characterized in that is formed gradually thicker toward the inward direction from the front side outward direction of the vehicle.
- 제1항에 있어서,The method of claim 1,상기 범퍼 백빔에 형성된 제1하니콤공간부는, 서로 대칭되게 적층되는 상기 복수의 백빔 플레이트에 각각 형성된 제1볼록부와, 상기 제1볼록부를 연결하는 제1상하연결부에 의해 이루어지는 것을 특징으로 하는 차량 범퍼.The first honeycomb space portion formed in the bumper back beam comprises a first convex portion formed on each of the plurality of back beam plates stacked symmetrically with each other, and a first vertical connection portion connecting the first convex portion. bumper.
- 제1항에 있어서,The method of claim 1,표면에 제2볼록부가 형성된 복수의 형상플레이트를 상기 제2볼록부가 서로 대칭되게 순차적으로 적층하여 제2하니콤공간부를 형성하며, 상기 범퍼 백빔의 배면에 연결되어 상기 범퍼 백빔을 차량의 차체에 결합하는 크래쉬박스를 더 포함하는 것을 특징으로 하는 차량 범퍼.A plurality of shape plates having a second convex portion formed on a surface thereof are sequentially stacked symmetrically with the second convex portion to form a second honeycomb space portion. Vehicle bumper, characterized in that it further comprises a crash box.
- 제4항에 있어서,The method of claim 4, wherein상기 크래쉬박스에 형성된 제2하니콤공간부는, 서로 대칭되게 적층되는 상기 복수의 형상플레이트에 형성된 제2볼록부와, 상기 제2볼록부를 연결하는 제2상하연결부에 의해 이루어지는 것을 특징으로 하는 차량 범퍼.The second honeycomb space portion formed in the crash box includes a second bump formed on the plurality of shape plates stacked symmetrically with each other, and a second bumper connecting portion connecting the second protrusion. .
- 제4항에 있어서,The method of claim 4, wherein상기 크래쉬박스는 상기 범퍼 백빔에 수직하게 연결되는 것을 특징으로 하는 차량 범퍼.The crash box is a vehicle bumper, characterized in that connected vertically to the bumper back beam.
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KR10-2008-0068855 | 2008-07-16 | ||
KR20080068855 | 2008-07-16 | ||
KR10-2009-0057188 | 2009-06-25 | ||
KR1020090057188A KR20100008753A (en) | 2008-07-16 | 2009-06-25 | Automobile bumper |
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WO2010008217A2 true WO2010008217A2 (en) | 2010-01-21 |
WO2010008217A3 WO2010008217A3 (en) | 2010-03-25 |
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WO2014146835A1 (en) * | 2013-03-19 | 2014-09-25 | Thyssenkrupp Steel Europe Ag | Bumper for a motor vehicle |
CN104724018A (en) * | 2015-02-13 | 2015-06-24 | 苏州紫荆清远新能源汽车技术有限公司 | Automobile anti-collision beam structure and automobile |
CN104827993A (en) * | 2014-10-27 | 2015-08-12 | 北汽福田汽车股份有限公司 | Energy absorption box |
CN105882575A (en) * | 2014-11-14 | 2016-08-24 | 交通运输部公路科学研究所 | Dangerous goods transport vehicle side protection device |
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CN102537644A (en) * | 2012-02-21 | 2012-07-04 | 湖南大学 | Porous material filling double-layer tube |
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