WO2022145762A1 - Bumper frame having crash boxes with reinforced rigidity - Google Patents

Bumper frame having crash boxes with reinforced rigidity Download PDF

Info

Publication number
WO2022145762A1
WO2022145762A1 PCT/KR2021/018094 KR2021018094W WO2022145762A1 WO 2022145762 A1 WO2022145762 A1 WO 2022145762A1 KR 2021018094 W KR2021018094 W KR 2021018094W WO 2022145762 A1 WO2022145762 A1 WO 2022145762A1
Authority
WO
WIPO (PCT)
Prior art keywords
main body
rigidity
crash box
bumper frame
vehicle
Prior art date
Application number
PCT/KR2021/018094
Other languages
French (fr)
Korean (ko)
Inventor
이흥식
하성용
Original Assignee
중부대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 중부대학교 산학협력단 filed Critical 중부대학교 산학협력단
Publication of WO2022145762A1 publication Critical patent/WO2022145762A1/en

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/03—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by material, e.g. composite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—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
    • B60R19/18—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
    • B60R2019/182—Structural beams therefor, e.g. shock-absorbing made of metal of light metal, e.g. extruded
    • 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
    • B60R2019/1853—Structural beams therefor, e.g. shock-absorbing made of plastic material of reinforced plastic material

Definitions

  • the present invention relates to a crash box rigidity-reinforced bumper frame, and more particularly, to a crash box rigidity-reinforced bumper frame capable of increasing or decreasing the rigidity of a crash box constituting the bumper frame in stages.
  • a bumper frame is a structure that is basically installed at the front and rear of a vehicle in order to buffer the amount of impact applied to the vehicle. It performs the function of minimizing deformation.
  • a bumper beam 105 that is composed of two bumper rails 101 and 103 and is mounted, an energy absorber 107 disposed in front of the bumper beam 105 to absorb impact force, a bumper beam 105 and an energy absorber 107.
  • a bumper frame composed of an enclosing bumper cover (109), a tubular crash box (113) for interconnecting a transverse beam (105) and a front side member (111).
  • the bumper frame of the prior art absorbs some of the collision energy while the energy absorber 107 is first compressed during a vehicle collision, and the remaining collision energy that is not absorbed is passed through the rear bumper beam 105 and the crash box 113 . It is dispersed and absorbed into the vehicle body.
  • the bumper beam 105 and the crash box 113 generally absorb the impact in the front, rear or left and right directions of the vehicle body during a low-speed collision to minimize the impact transmitted to the side member 111 .
  • the bumper beam 105 and the crash box 113 are required to have characteristics that minimize bending or compressive deformation in the early stage that does not affect the occupants, especially during high-speed collisions, and relatively large in the latter half when they directly affect the occupants.
  • the safety of the occupants can be achieved only when the characteristics of bending deformation and compression deformation are present.
  • the conventional simple plate or tubular bumper beam 105 and crash box 113 do not have sufficient structural rigidity to effectively absorb a large amount of impact energy at the beginning of the collision and easily As it collapses and deforms, there is a problem in that the impact acceleration is transmitted to the occupant as it is.
  • the above object is a bumper frame installed on the vehicle body to absorb the impact applied from the front of the vehicle, including a transverse beam disposed long in the width direction of the vehicle, and a pair of crash boxes coupled to the left and right sides of the transverse beam,
  • the crash box the main body made of a hollow pipe shape; an inner reinforcing part that forms a grid in the hollow of the main body and is formed in the longitudinal direction of the main body to reinforce the rigidity of the main body; and mounting brackets respectively protruding from upper and lower end surfaces of the main body along the longitudinal direction of the main body and coupled to the transverse beam.
  • the crash box may further include a side reinforcement portion which is formed to protrude from the left and right side surfaces of the main body, respectively, to further reinforce the rigidity of the main body so that a reinforcement pocket is formed in the center along the longitudinal direction of the main body.
  • the main body, the inner reinforcing portion and the side reinforcing portion may be integrally formed by extruding a metal material or engineering synthetic resin capable of absorbing impact and plastic deformation.
  • the side reinforcement part may be cut to a predetermined length along the longitudinal direction of the main body to be used so that the rigidity corresponding to the collision condition required according to the weight or size of the vehicle is customized.
  • the main body may be made of a square pipe having a cross-sectional shape of a square, hexagon, or octagon, or may be made of a pipe having a cross-section of a circle or an oval.
  • a pair of crash boxes coupled to the left and right sides of the horizontal beam constituting the bumper frame is made of a hollow main body, and a grid-shaped inner reinforcement part in the hollow of the main body, the left side of the main body, As the side reinforcement on the right side is extruded integrally with the main body, the rigidity reinforcement for the crash box can be easily achieved without a complicated manufacturing process, and the automobile manufacturing process is simplified due to the minimized number of parts for the crash box.
  • the rigidity adjustment of the crash box that meets the crash conditions of various vehicles can be made freely by simple cutting of the side reinforcement.
  • FIG. 1 is a perspective view of a crash box rigidity-reinforced bumper frame according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of a vehicle to which the bumper frame of FIG. 1 is applied.
  • FIG. 3 is an exploded perspective view of the bumper frame of FIG. 1 .
  • FIG. 4 is a cross-sectional view of the crash box taken along the cut line A-A of FIG. 1 and a cross-sectional view of the crash box modified in various forms.
  • FIG. 5 is a process diagram showing the manufacturing process of the bumper frame of FIG. 1 step by step.
  • FIG. 6 is a view showing the structure of a conventional bumper frame.
  • FIG. 1 is a perspective view of a crash box rigidity-reinforced bumper frame according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view of a vehicle to which the bumper frame of FIG. 1 is applied
  • FIG. 3 is an exploded perspective view of the bumper frame of FIG. 4 is a cross-sectional view of the crash box along the cut line A-A of FIG. 1 and a cross-sectional view of the crash box modified in various forms
  • FIG. 5 is a process diagram showing the manufacturing process of the bumper frame of FIG. 1 step by step
  • FIG. 6 is a conventional bumper A drawing showing the structure of the frame.
  • Top (top), bottom (bottom), left and right (side or lateral), front (front, front), rear (back, back), etc., which refer to directions in the description and claims of the invention, etc. are not used for limiting rights
  • it is determined based on the relative positions between the drawings and the configuration, and the three axes may be rotated to correspond to each other and changed, except where specifically limited otherwise.
  • the number of parts of the crash box 120 can be minimized while the rigidity of the crash box 120 is easily reinforced at once without complicated processing, and simple cutting processing
  • the crash box 120 of the present invention, the rigidity-reinforced bumper frame 100 is basically a transverse beam 110 arranged long in the width direction of the vehicle, and a pair of crash boxes coupled to the left and right sides of the transverse beam 110 . After being manufactured in a structure including 120 and the like, it is installed between the buffer member 20 inside the bumper cover 10 of the vehicle and the side member 35 of the vehicle body 30 to absorb the impact applied from the front of the vehicle. will do
  • the crash box 120 according to the embodiment of the present invention, the rigidity-reinforced bumper frame 100 is, as shown in Figs. 1 and 3, horizontal
  • the beam 110 and the reinforcing structure may be configured to include a crash box 120 integrally formed.
  • the transverse beam 110 is a component provided to absorb some external shocks applied from various directions and to be bent and deformed, and to deliver the remaining external shocks to the crash box 120 to be described later, which is a bumper forming the exterior of the vehicle.
  • Corresponding to the cover 10 may be formed to be long in the width direction of the vehicle.
  • the transverse beam 110 according to the embodiment of the present invention, as shown in FIGS. 2 and 3, is formed in a bar shape that is bent and deformed in various ways according to the shape of the bumper cover 10 of the vehicle. It may be installed inside or in contact with the buffer member 20 provided inside the bumper cover 10 .
  • the transverse beam 110 is not particularly limited as long as it is a material that can sufficiently withstand the external impact required for a vehicle and does not break or break, so it can be made of a metal material or engineering synthetic resin, etc., depending on the type or weight of the vehicle, etc.
  • the necessary reinforcing structures may be provided.
  • the crash box 120 is a component that is compressively deformed by absorbing the external shock transmitted from the above-described transverse beam 110 in order to minimize the external shock applied to the side member 35, the length of the vehicle in the front and rear direction. It can be coupled to the left and right sides of the transverse beam 110 made of a pair of rod-shaped having.
  • Crash box 120 according to an embodiment of the present invention, specifically, as shown in FIGS. 1 to 4, for the implementation of overlapping and adjustable rigidity, the main body 122, the inner reinforcement part 124, the mounting It may be configured to include a bracket 126 and a side reinforcement 128, and the like.
  • the main body 122 is not a hollow shape, but a pipe-shaped component with a hollow hollow (S) formed in the center.
  • the main body 122 may have a rectangular cross-sectional shape so as to uniformly distribute and absorb external shocks around it, and has a hexagonal or octagonal cross-sectional shape as shown in FIG. It may consist of a square pipe, or it may consist of a pipe with a circular or elliptical cross section.
  • connection bracket 129 extending outwardly for coupling with the side member 35 may be formed.
  • the inner reinforcing part 124 is a component provided to reinforce the rigidity of the hollow pipe-shaped main body 122 from the inside, and forms a grid in the hollow S, in the longitudinal direction of the main body 122 . It can be formed by
  • the inner reinforcing part 124 may be formed in a form in which two partition walls intersect each other so that the cross-section forms an 'X' shape, as shown in FIG.
  • three or more barrier ribs may be formed to cross each other.
  • the rigidity of the main body 122 increases as the number or thickness of the intersecting barrier ribs increases, the number of barrier ribs or the thickness of the barrier ribs may be variously changed according to collision conditions required for the vehicle.
  • the mounting bracket 126 is a component provided for coupling between the main body 122 and the transverse beam 110 described above, and along the longitudinal direction of the main body 122 in the upper and lower end surfaces of the main body 122 . Each pair may be formed to protrude in one direction.
  • the mounting bracket 126 according to the embodiment of the present invention is formed to form a 'C' shape when viewed from the side as shown in FIG. 3 and is fitted to the transverse beam 110, and in the fitted state By welding, a strong bonding force is formed with the transverse beam 110 .
  • the side reinforcement portion 128 is a component provided to reinforce the rigidity of the hollow pipe-shaped main body 122 from the side, and a reinforcement pocket (RP) in the center along the longitudinal direction of the main body 122 It may be formed so as to protrude from the left and right side surfaces of the main body 122, respectively.
  • RP reinforcement pocket
  • the side reinforcement portion 128 convexly protrudes from the side surface of the main body 122 to have a 'C' or 'D' shape in cross section. As this is achieved, a reinforcing pocket (RP) that performs the functions of reducing weight and increasing rigidity can be formed on the inside.
  • RP reinforcing pocket
  • the side reinforcement portion 128 is a side reinforcement portion 128 of a small size and a side reinforcement portion 128 of a large size formed to cover the side reinforcement portion 128 of a small size of the main body 122.
  • the rigidity of the side surface of the main body 122 can be strengthened in various ways by overlapping the side surface or increasing the thickness.
  • the side reinforcement portion 128 can be used by being cut to a predetermined length along the longitudinal direction of the main body 122, which can be used to customize the rigidity to meet the crash conditions required according to the weight or size of the vehicle ( Adjustment of Customized Rigidity (ACR).
  • ACR Adjustment of Customized Rigidity
  • the main body 122 is a transverse beam ( 110) can be compressed and deformed intensively in the early stage with respect to the external impact transmitted from it.
  • the main body 122 is sequentially transferred from the transverse beam 110. It can be compressed and deformed intensively in the second half against external impact.
  • the main body 122 may be compressed and deformed intensively in the middle with respect to the external impact sequentially transmitted from the transverse beam 110 .
  • the main body 122 can be easily adjusted (ACR) to a rigidity that meets the crash conditions required according to the weight or size of the vehicle.
  • the main body 122, the inner reinforcement part 124, and the side reinforcement part 128 may be integrally formed by extruding a metal material or engineering synthetic resin capable of absorbing shock and plastic deformation. .
  • the rigidity reinforcement for the crash box 120 can be easily made in one step without a complicated manufacturing process, and the number of parts for forming the crash box 120 can be minimized, so that the automobile manufacturing process can be simplified.
  • the operator extrudes the crash box 120 , that is, the main body 122 , the inner reinforcement part 124 and the side reinforcement part 128 to be integrally extruded. Processing (S10) is performed.
  • the extrusion process (S10) is a process of injecting a raw material metal material or engineering synthetic resin into a container provided with a die corresponding to the outer shape of the crash box 120, and the inner reinforcement part 124 and the side reinforcement It may be made in a process of pressurizing and discharging the raw material to the outside of the container using a pressing member (ram) formed with a mandrel corresponding to the portion 128, respectively.
  • a pressing member ram
  • the crash box 120 according to the present invention can be easily manufactured integrally with several reinforcing structures from a single raw material without a complicated manufacturing process, and has excellent dimensional and surface precision and is uniform and uniform.
  • the crash box 120 having rigidity and workability can be mass-produced.
  • This first cutting process (S20) is made by cutting and removing the part except for the upper and lower surfaces of the main body 122 from one end of the integrally extruded crash box 120 .
  • the cutting process at this time is, as described above, a method of selectively cutting a part of the side reinforcement part 128 formed long along the longitudinal direction of the main body 122, and the protrusion height of the side reinforcement part 128 gradually increases. It can be made by various combinations of methods of cutting the side reinforcement portion 128 in an oblique direction so that it becomes larger or smaller. (ACR)
  • the mounting bracket 126 and the transverse beam 110 of the crash box 120 can be firmly coupled by being welded after being fitted with each other.
  • rigidity reinforcement for the crash box 120 can be easily achieved through a simple manufacturing process and can be manufactured with a minimized number of parts, so that the automobile manufacturing process can be simplified, and the rigidity adjustment of the crash box 120 that meets the collision conditions of various vehicles can be freely made by simple cutting of the side reinforcement portion 128 .

Landscapes

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

Abstract

Disclosed is a bumper frame having crash boxes with reinforced rigidity. The bumper frame having crash boxes with reinforced rigidity, according to the present invention, is a bumper frame which is installed on a vehicle body so as to absorb an impact applied from the front of a vehicle, and comprises a horizontal beam arranged in the width direction of the vehicle, and a pair of crash boxes coupled to the left and right sides of the horizontal beam. The crash boxes each comprise: a main body formed in a hollow pipe shape; an inner reinforcement part which is formed in a grid shape in a hollow of the main body and is formed in the longitudinal direction of the main body so as to reinforce the rigidity of the main body; and mounting brackets which protrude from the upper and lower surfaces of the main body along the longitudinal direction of the main body and are coupled to the horizontal beam.

Description

크래쉬박스 강성보강형 범퍼 프레임Crash Box Reinforced Bumper Frame
본 발명은, 크래쉬박스 강성보강형 범퍼 프레임에 관한 것으로, 보다 상세하게는, 범퍼 프레임을 구성하는 크래쉬박스의 강성을 단계별로 증감시킬 수 있는 크래쉬박스 강성보강형 범퍼 프레임에 관한 것이다.The present invention relates to a crash box rigidity-reinforced bumper frame, and more particularly, to a crash box rigidity-reinforced bumper frame capable of increasing or decreasing the rigidity of a crash box constituting the bumper frame in stages.
일반적으로 범퍼 프레임은, 차량에 가해지는 충격량을 완충하기 위해 차량의 전,후방에 기본 설치되는 구조물로서, 다른 자동차나 고정된 구조물과의 충돌시 그 충격을 흡수하여 탑승자를 보호하는 한편, 차체의 변형을 최소화하는 기능을 수행하게 된다.In general, a bumper frame is a structure that is basically installed at the front and rear of a vehicle in order to buffer the amount of impact applied to the vehicle. It performs the function of minimizing deformation.
이러한 범퍼 프레임과 관련된 종래 선행기술 중 대한민국등록특허 제10-0764502호(공고일: 2007년 10월 09일)에 언급된 기술은, 도 6에 도시한 바와 같이, 차량의 전,후방에서 차폭방향으로 2개의 범퍼레일(101,103)로 구성되어 장착되는 범퍼 빔(105), 범퍼 빔(105)의 전방에 배치되어 충격력을 흡수하는 에너지 업소버(107), 범퍼 빔(105)과 에너지 업소버(107)를 감싸는 범퍼커버(109), 가로빔(105)과 프런트 사이드 멤버(111)를 상호 연결하기 위한 관체형의 크래쉬 박스(113)로 구성되는 범퍼 프레임을 개시하고 있다.Among the prior art related to such a bumper frame, the technology mentioned in Korean Patent Registration No. 10-0764502 (publication date: October 09, 2007) is, as shown in FIG. 6 , in the vehicle width direction from the front and rear of the vehicle. A bumper beam 105 that is composed of two bumper rails 101 and 103 and is mounted, an energy absorber 107 disposed in front of the bumper beam 105 to absorb impact force, a bumper beam 105 and an energy absorber 107. Disclosed is a bumper frame composed of an enclosing bumper cover (109), a tubular crash box (113) for interconnecting a transverse beam (105) and a front side member (111).
이러한 선행기술의 범퍼 프레임은, 차량의 충돌시 에너지 업소버(107)가 우선 압축되면서 충돌에너지를 일부 흡수하고, 흡수되지 못한 나머지 충돌 에너지는 후방의 범퍼 빔(105)과 크래쉬 박스(113)를 통하여 차체로 분산되며 흡수된다.The bumper frame of the prior art absorbs some of the collision energy while the energy absorber 107 is first compressed during a vehicle collision, and the remaining collision energy that is not absorbed is passed through the rear bumper beam 105 and the crash box 113 . It is dispersed and absorbed into the vehicle body.
이때, 범퍼 빔(105)과 크래쉬 박스(113)는 일반적으로 저속 충돌시 차체의 전후 또는 좌우방향으로 충격을 흡수하여 사이드 멤버(111)에 전달되는 충격을 최소화하는 기능을 수행하게 된다.In this case, the bumper beam 105 and the crash box 113 generally absorb the impact in the front, rear or left and right directions of the vehicle body during a low-speed collision to minimize the impact transmitted to the side member 111 .
그리고 범퍼 빔(105)과 크래쉬 박스(113)는, 특히 고속 충돌시 탑승자에게 영향을 주지 않는 초반에 휨변형 또는 압축변형을 최소화하는 특성이 요구되고, 탑승자에게 직접적인 영향을 주는 후반에는 상대적으로 크게 휨변형과 압축 변형되는 특성이 있어야 탑승자의 안전이 도모될 수 있게 된다.In addition, the bumper beam 105 and the crash box 113 are required to have characteristics that minimize bending or compressive deformation in the early stage that does not affect the occupants, especially during high-speed collisions, and relatively large in the latter half when they directly affect the occupants. The safety of the occupants can be achieved only when the characteristics of bending deformation and compression deformation are present.
그러나 도 6에 도시된 바와 같은, 종래 단순한 판재 또는 관체형상의 범퍼 빔(105)과 크래쉬 박스(113)는, 구조적으로 충분한 강성이 확보되지 않아 충돌 초기에 다량의 충격에너지를 효과적으로 흡수하지 못하고 쉽게 붕괴되며 변형됨에 따라 탑승자에게 충격가속도가 그대로 전달되는 문제가 있다.However, as shown in FIG. 6 , the conventional simple plate or tubular bumper beam 105 and crash box 113 do not have sufficient structural rigidity to effectively absorb a large amount of impact energy at the beginning of the collision and easily As it collapses and deforms, there is a problem in that the impact acceleration is transmitted to the occupant as it is.
이 특허는 2020년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임 ('20006996')This patent is a research funded by the Ministry of Trade, Industry and Energy and the Institute for Industrial Technology Evaluation and Management (KEIT) in 2020 ('20006996')
본 발명의 목적은, 차량에 요구되는 충돌조건에 부합하도록 범퍼 프레임을 구성하는 크래쉬박스의 강성을 필요에 따라 증감시킬 수 있고, 복잡한 보강 구조를 일체형으로 압출성형할 수 있는 크래쉬박스 강성보강형 범퍼 프레임을 제공하는 것이다.It is an object of the present invention to increase/decrease the rigidity of a crash box constituting a bumper frame to meet the crash conditions required for a vehicle, and a crash box rigidity-reinforced bumper frame capable of integrally extruding a complex reinforcing structure is to provide
상기 목적은, 차량의 폭방향으로 길게 배치되는 가로빔과, 상기 가로빔의 좌우측에 결합되는 한 쌍의 크래쉬박스를 포함하여 차량의 전방에서 가해지는 충격을 흡수하도록 차체에 설치되는 범퍼 프레임으로서, 상기 크래쉬박스는, 중공형 파이프 형상으로 이루어진 메인바디; 상기 메인바디의 중공에 격자형태를 이루며 상기 메인바디의 길이방향으로 형성되어 상기 메인바디의 강성을 보강하는 내측보강부; 및 상기 메인바디의 길이방향을 따라 상기 메인바디의 상,하단면에서 각각 돌출형성되어 상기 가로빔과 결합하는 마운팅브라켓을 포함하는 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임에 의해 달성된다.The above object is a bumper frame installed on the vehicle body to absorb the impact applied from the front of the vehicle, including a transverse beam disposed long in the width direction of the vehicle, and a pair of crash boxes coupled to the left and right sides of the transverse beam, The crash box, the main body made of a hollow pipe shape; an inner reinforcing part that forms a grid in the hollow of the main body and is formed in the longitudinal direction of the main body to reinforce the rigidity of the main body; and mounting brackets respectively protruding from upper and lower end surfaces of the main body along the longitudinal direction of the main body and coupled to the transverse beam.
상기 크래쉬박스는, 중앙에 보강포켓이 상기 메인바디의 길이방향을 따라 형성되도록 상기 메인바디의 좌,우측면에서 각각 돌출형성되어 상기 메인바디의 강성을 추가적으로 보강하는 측면보강부를 더 포함할 수 있다.The crash box may further include a side reinforcement portion which is formed to protrude from the left and right side surfaces of the main body, respectively, to further reinforce the rigidity of the main body so that a reinforcement pocket is formed in the center along the longitudinal direction of the main body.
상기 메인바디, 상기 내측보강부 및 상기 측면보강부는, 충격을 흡수하며 소성변형이 가능한 금속소재 또는 엔지니어링 합성수지를 압출성형하여 일체로 형성될 수 있다.The main body, the inner reinforcing portion and the side reinforcing portion may be integrally formed by extruding a metal material or engineering synthetic resin capable of absorbing impact and plastic deformation.
상기 측면보강부는, 차량의 중량이나 크기에 따라 요구되는 충돌조건에 부합하는 강성이 맞춤식으로 조절되도록, 상기 메인바디의 길이방향을 따라 소정 길이로 절단되어 사용될 수 있다.The side reinforcement part may be cut to a predetermined length along the longitudinal direction of the main body to be used so that the rigidity corresponding to the collision condition required according to the weight or size of the vehicle is customized.
상기 메인바디는, 사각형, 육각형 또는 팔각형의 단면형상을 갖는 각파이프로 이루어지거나, 원형 또는 타원형의 단면을 갖는 파이프로 이루어질 수 있다.The main body may be made of a square pipe having a cross-sectional shape of a square, hexagon, or octagon, or may be made of a pipe having a cross-section of a circle or an oval.
본 발명에 의하면, 범퍼 프레임을 구성하는 가로빔의 좌우측에 결합되는 한 쌍의 크래쉬박스가 중공형의 메인바디로 이루어지고, 메인바디의 중공에 격자형태의 내측보강부와, 메인바디의 좌,우측면에 측면보강부가 각각 메인바디와 일체로 압출성형됨에 따라, 크래쉬박스에 대한 강성 보강이 복잡한 제조공정 없이 손쉽게 일거에 이루어질 수 있고, 최소화된 크래쉬박스의 부품수로 인해 자동차 제조공정의 단순화가 도모될 수 있으며, 다양한 차량의 충돌조건에 부합하는 크래쉬 박스의 강성 조절이 측면보강부에 대한 단순한 절단가공으로 자유자재로 이루어질 수 있게 된다.According to the present invention, a pair of crash boxes coupled to the left and right sides of the horizontal beam constituting the bumper frame is made of a hollow main body, and a grid-shaped inner reinforcement part in the hollow of the main body, the left side of the main body, As the side reinforcement on the right side is extruded integrally with the main body, the rigidity reinforcement for the crash box can be easily achieved without a complicated manufacturing process, and the automobile manufacturing process is simplified due to the minimized number of parts for the crash box. The rigidity adjustment of the crash box that meets the crash conditions of various vehicles can be made freely by simple cutting of the side reinforcement.
도 1은 본 발명의 실시예에 따른 크래쉬박스 강성보강형 범퍼 프레임의 사시도이다.1 is a perspective view of a crash box rigidity-reinforced bumper frame according to an embodiment of the present invention.
도 2는 도 1의 범퍼 프레임이 적용된 차량의 분해사시도이다.FIG. 2 is an exploded perspective view of a vehicle to which the bumper frame of FIG. 1 is applied.
도 3은 도 1의 범퍼 프레임에 대한 분해사시도이다.3 is an exploded perspective view of the bumper frame of FIG. 1 .
도 4는 도 1의 절단선 A-A에 따른 크래쉬박스의 단면도 및 다양한 형태로 변형된 크래쉬박스의 단면도이다.4 is a cross-sectional view of the crash box taken along the cut line A-A of FIG. 1 and a cross-sectional view of the crash box modified in various forms.
도 5는 도 1의 범퍼 프레임의 제조과정을 단계별로 보여주는 공정도이다.FIG. 5 is a process diagram showing the manufacturing process of the bumper frame of FIG. 1 step by step.
도 6은 종래 범퍼 프레임의 구조를 보여주는 도면이다.6 is a view showing the structure of a conventional bumper frame.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예들을 상세하게 설명하면 다음과 같다. 다만, 본 발명을 설명함에 있어서, 이미 공지된 기능 혹은 구성에 대한 설명은, 본 발명의 요지를 명료하게 하기 위하여 생략하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.
도 1은 본 발명의 실시예에 따른 크래쉬박스 강성보강형 범퍼 프레임의 사시도이고, 도 2는 도 1의 범퍼 프레임이 적용된 차량의 분해사시도이고, 도3은 도 1의 범퍼 프레임에 대한 분해사시도이고, 도 4는 도 1의 절단선 A-A에 따른 크래쉬박스의 단면도 및 다양한 형태로 변형된 크래쉬박스의 단면도이고, 도 5는 도 1의 범퍼 프레임의 제조과정을 단계별로 보여주는 공정도이고, 도 6은 종래 범퍼 프레임의 구조를 보여주는 도면이다.1 is a perspective view of a crash box rigidity-reinforced bumper frame according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a vehicle to which the bumper frame of FIG. 1 is applied, and FIG. 3 is an exploded perspective view of the bumper frame of FIG. 4 is a cross-sectional view of the crash box along the cut line A-A of FIG. 1 and a cross-sectional view of the crash box modified in various forms, FIG. 5 is a process diagram showing the manufacturing process of the bumper frame of FIG. 1 step by step, and FIG. 6 is a conventional bumper A drawing showing the structure of the frame.
발명의 설명 및 청구범위 등에서 방향을 지칭하는 상(위쪽), 하(아래쪽), 좌우(옆쪽 또는 측방), 전(정,앞쪽), 후(배,뒤쪽) 등은 권리의 한정의 용도가 아닌 설명의 편의를 위해서 도면 및 구성 간의 상대적 위치를 기준으로 정한 것으로, 3개의 축은 서로 대응되게 회전하여 바뀔 수 있으며, 특별히 다르게 한정하는 경우 외에는 이에 따른다.Top (top), bottom (bottom), left and right (side or lateral), front (front, front), rear (back, back), etc., which refer to directions in the description and claims of the invention, etc. are not used for limiting rights For convenience of explanation, it is determined based on the relative positions between the drawings and the configuration, and the three axes may be rotated to correspond to each other and changed, except where specifically limited otherwise.
본 발명에 따른 크래쉬박스(120) 강성보강형 범퍼 프레임(100)은, 크래쉬박스(120)의 강성이 복잡한 가공 없이 손쉽게 일거에 보강되면서도 크래쉬박스(120)의 부품수가 최소화될 수 있고, 단순한 절단가공을 통해 크래쉬박스(120)의 강성이 자유자재로 조절되도록 하기 위해 안출된 발명이다.In the crash box 120 rigidity-reinforced bumper frame 100 according to the present invention, the number of parts of the crash box 120 can be minimized while the rigidity of the crash box 120 is easily reinforced at once without complicated processing, and simple cutting processing This is an invention devised so that the rigidity of the crash box 120 can be freely adjusted through the .
이러한 본 발명의 크래쉬박스(120) 강성보강형 범퍼 프레임(100)은, 기본적으로 차량의 폭방향으로 길게 배치되는 가로빔(110)과, 가로빔(110)의 좌우측에 결합되는 한 쌍의 크래쉬박스(120) 등을 포함하는 구조로 제작된 후, 차량의 범퍼커버(10) 내측의 완충부재(20)와 차체(30)의 사이드멤버(35) 사이에 설치되어 차량 전방에서 가해지는 충격을 흡수하게 된다.The crash box 120 of the present invention, the rigidity-reinforced bumper frame 100 is basically a transverse beam 110 arranged long in the width direction of the vehicle, and a pair of crash boxes coupled to the left and right sides of the transverse beam 110 . After being manufactured in a structure including 120 and the like, it is installed between the buffer member 20 inside the bumper cover 10 of the vehicle and the side member 35 of the vehicle body 30 to absorb the impact applied from the front of the vehicle. will do
상술한 바와 같은 본 발명의 기능 내지 작용을 구체적으로 구현하기 위해, 본 발명의 실시예에 따른 크래쉬박스(120) 강성보강형 범퍼 프레임(100)은, 도 1 및 도 3에 도시된 바와 같이, 가로빔(110) 및 보강구조가 일체로 형성된 크래쉬박스(120) 등을 포함하여 구성될 수 있다.In order to specifically implement the functions or actions of the present invention as described above, the crash box 120 according to the embodiment of the present invention, the rigidity-reinforced bumper frame 100 is, as shown in Figs. 1 and 3, horizontal The beam 110 and the reinforcing structure may be configured to include a crash box 120 integrally formed.
먼저, 가로빔(110)은, 여러 방향에서 가해지는 외부 충격을 일부 흡수하며 휨변형되고, 나머지 외부 충격을 후술할 크래쉬박스(120)로 전달하기 위해 마련된 구성요소로서, 차량의 외관을 이루는 범퍼커버(10)에 대응하여 차량의 폭방향으로 길게 형성될 수 있다. First, the transverse beam 110 is a component provided to absorb some external shocks applied from various directions and to be bent and deformed, and to deliver the remaining external shocks to the crash box 120 to be described later, which is a bumper forming the exterior of the vehicle. Corresponding to the cover 10 may be formed to be long in the width direction of the vehicle.
본 발명의 실시예에 따른 가로빔(110)은, 도 2 및 도 3에 도시된 바와 같이, 차량의 범퍼커버(10) 형상에 따라 다양하게 절곡되고 변형된 막대형상으로 이루어져 범퍼커버(10) 내측에 설치되거나 또는 범퍼커버(10) 내측에 구비된 완충부재(20)에 접하도록 설치될 수 있다. The transverse beam 110 according to the embodiment of the present invention, as shown in FIGS. 2 and 3, is formed in a bar shape that is bent and deformed in various ways according to the shape of the bumper cover 10 of the vehicle. It may be installed inside or in contact with the buffer member 20 provided inside the bumper cover 10 .
이러한 가로빔(110)은, 차량에 요구되는 외부 충격을 충분히 견딜 수 있고, 깨지거나 파단되지 않는 소재라면 특별히 제한되지 않으므로, 금속재 또는 엔지니어링 합성수지 등으로 제작될 수 있고, 차량의 종류나 중량 등에 따라 필요한 보강 구조가 구비될 수 있다.The transverse beam 110 is not particularly limited as long as it is a material that can sufficiently withstand the external impact required for a vehicle and does not break or break, so it can be made of a metal material or engineering synthetic resin, etc., depending on the type or weight of the vehicle, etc. The necessary reinforcing structures may be provided.
크래쉬박스(120)는, 사이드멤버(35)에 가해지는 외부 충격을 최소화 하기 위해 상술한 가로빔(110)으로부터 전달된 외부 충격을 흡수하며 압축변형되는 구성요소로서, 차량의 전후방향으로 길이를 갖는 한 쌍의 막대형상으로 이루어져 가로빔(110)의 좌우측에 각각 결합될 수 있다. The crash box 120 is a component that is compressively deformed by absorbing the external shock transmitted from the above-described transverse beam 110 in order to minimize the external shock applied to the side member 35, the length of the vehicle in the front and rear direction. It can be coupled to the left and right sides of the transverse beam 110 made of a pair of rod-shaped having.
본 발명의 실시예에 따른 크래쉬박스(120)는, 구체적으로 도 1 내지 도 4에 도시된 바와 같이, 중첩적이고 조절가능한 강성구현을 위해, 메인바디(122), 내측보강부(124), 마운팅브라켓(126) 및 측면보강부(128) 등을 포함하여 구성될 수 있다. Crash box 120 according to an embodiment of the present invention, specifically, as shown in FIGS. 1 to 4, for the implementation of overlapping and adjustable rigidity, the main body 122, the inner reinforcement part 124, the mounting It may be configured to include a bracket 126 and a side reinforcement 128, and the like.
여기서 메인바디(122)는, 속이 찬 형상이 아니라 중앙에 속이 빈 중공(S)이 형성된 파이프 형상의 구성요소로서, 중공(S)이 형성된 파이프 형상으로 이루어진 것이라면 단면 형상은 특별히 제한되지 않는다.Here, the main body 122 is not a hollow shape, but a pipe-shaped component with a hollow hollow (S) formed in the center.
다만, 메인바디(122)는 도 4에 도시된 바와 같이, 외부 충격을 주변으로 균일하게 분산하며 흡수할 수 있도록, 사각형의 단면형상일 수 있고, 도시된 바와 달리 육각형 또는 팔각형의 단면형상을 갖는 각파이프로 이루어지거나, 또는 원형 또는 타원형의 단면을 갖는 파이프로 이루어질 수 있다.However, as shown in FIG. 4 , the main body 122 may have a rectangular cross-sectional shape so as to uniformly distribute and absorb external shocks around it, and has a hexagonal or octagonal cross-sectional shape as shown in FIG. It may consist of a square pipe, or it may consist of a pipe with a circular or elliptical cross section.
이러한 메인바디(122)의 일단부에는, 사이드멤버(35)와의 결합을 위해 외측으로 확장형성된 연결브라켓(129)이 형성될 수 있다.At one end of the main body 122 , a connection bracket 129 extending outwardly for coupling with the side member 35 may be formed.
내측보강부(124)는, 중공형 파이프 형상의 메인바디(122)에 대한 강성을 내측에서 보강하기 위해 마련된 구성요소로서, 중공(S) 내에서 격자형태를 이루며 메인바디(122)의 길이방향으로 형성되어 이루어질 수 있다.The inner reinforcing part 124 is a component provided to reinforce the rigidity of the hollow pipe-shaped main body 122 from the inside, and forms a grid in the hollow S, in the longitudinal direction of the main body 122 . It can be formed by
본 발명의 실시예에 따른 내측보강부(124)는, 도 3 및 도 4에 도시된 바와 같이, 단면이 'X'자 형상을 이루도록, 2개의 격벽이 서로 교차하는 형태로 이루어질 수 있고, 도시된 바와 달리 3개 이상의 격벽이 서로 교차하는 형태로 이루어질 수도 있다. The inner reinforcing part 124 according to the embodiment of the present invention, as shown in FIGS. 3 and 4, may be formed in a form in which two partition walls intersect each other so that the cross-section forms an 'X' shape, as shown in FIG. Alternatively, three or more barrier ribs may be formed to cross each other.
이때, 교차하는 격벽의 수나 두께가 증가할수록 메인바디(122)의 강성도 증대되므로, 차량에 요구되는 충돌조건에 따라 격벽의 수 또는 격벽의 두께는 다양하게 변경될 수 있다.At this time, since the rigidity of the main body 122 increases as the number or thickness of the intersecting barrier ribs increases, the number of barrier ribs or the thickness of the barrier ribs may be variously changed according to collision conditions required for the vehicle.
마운팅브라켓(126)은, 상술한 메인바디(122)와 가로빔(110) 간의 결합을 위해 마련된 구성요소로서, 메인바디(122)의 상,하단면에서 메인바디(122)의 길이방향을 따라 각각 한 쌍이 일방향으로 돌출형성되어 이루어질 수 있다.The mounting bracket 126 is a component provided for coupling between the main body 122 and the transverse beam 110 described above, and along the longitudinal direction of the main body 122 in the upper and lower end surfaces of the main body 122 . Each pair may be formed to protrude in one direction.
본 발명의 실시예에 따른 마운팅브라켓(126)은, 도 3에 도시된 바와 같이 측면에서 볼 때, 'ㄷ'자 형상을 이루도록 형성되어 가로빔(110)에 끼움결합되고, 끼움결합된 상태에서 용접됨으로써 가로빔(110)과 견고한 결합력을 형성하게 된다.The mounting bracket 126 according to the embodiment of the present invention is formed to form a 'C' shape when viewed from the side as shown in FIG. 3 and is fitted to the transverse beam 110, and in the fitted state By welding, a strong bonding force is formed with the transverse beam 110 .
측면보강부(128)는, 중공형 파이프 형상의 메인바디(122)에 대한 강성을 측면에서 보강하기 위해 마련된 구성요소로서, 중앙에 보강포켓(RP)이 메인바디(122)의 길이방향을 따라 형성되도록 메인바디(122)의 좌,우측면에서 각각 돌출 형성되어 이루어질 수 있다.The side reinforcement portion 128 is a component provided to reinforce the rigidity of the hollow pipe-shaped main body 122 from the side, and a reinforcement pocket (RP) in the center along the longitudinal direction of the main body 122 It may be formed so as to protrude from the left and right side surfaces of the main body 122, respectively.
본 발명의 실시예에 따른 측면보강부(128)는, 도 3 및 도 4에 도시된 바와 같이, 메인바디(122)의 측면에서 볼록하게 돌출되어 단면이 'ㄷ'자 또는 'D'자 형상을 이룸에 따라 내측에 경량화와 강성 증대의 기능을 수행하는 보강포켓(RP)이 형성될 수 있게 된다.The side reinforcement portion 128 according to the embodiment of the present invention, as shown in FIGS. 3 and 4, convexly protrudes from the side surface of the main body 122 to have a 'C' or 'D' shape in cross section. As this is achieved, a reinforcing pocket (RP) that performs the functions of reducing weight and increasing rigidity can be formed on the inside.
이때, 측면보강부(128)는, 작은 크기의 측면보강부(128)와, 작은 크기의 측면보강부(128)를 덮도록 형성된 큰 크기의 측면보강부(128)를 메인바디(122)의 측면에 중첩적으로 형성하거나 두께를 증대하는 방식으로 메인바디(122)의 측면에 대한 강성을 다양하게 강화할 수 있다.At this time, the side reinforcement portion 128 is a side reinforcement portion 128 of a small size and a side reinforcement portion 128 of a large size formed to cover the side reinforcement portion 128 of a small size of the main body 122. The rigidity of the side surface of the main body 122 can be strengthened in various ways by overlapping the side surface or increasing the thickness.
한편, 측면보강부(128)는, 메인바디(122)의 길이방향을 따라 소정 길이로 절단되어 사용될 수 있는데, 이는 차량의 중량이나 크기 등에 따라 요구되는 충돌조건에 부합하는 강성을 맞춤식으로 조절(Adjustment of Customized Rigidity, ACR)하기 위함이다.On the other hand, the side reinforcement portion 128 can be used by being cut to a predetermined length along the longitudinal direction of the main body 122, which can be used to customize the rigidity to meet the crash conditions required according to the weight or size of the vehicle ( Adjustment of Customized Rigidity (ACR).
즉, 일례로, 도 3 및 도 5의 (c)에 도시된 바와 같이, 가로빔(110)에 인접한 측면보강부(128) 일부를 절단하여 제거하게 되면, 메인바디(122)는 가로빔(110)으로부터 전달된 외부 충격에 대하여 초반에 집중적으로 압축변형될 수 있다. That is, as an example, as shown in FIGS. 3 and 5 (c), when a part of the side reinforcement 128 adjacent to the transverse beam 110 is cut and removed, the main body 122 is a transverse beam ( 110) can be compressed and deformed intensively in the early stage with respect to the external impact transmitted from it.
반대로, 가로빔(110)에서 멀리 떨어진(사이드멤버(35)에 인접한) 측면보강부(128) 일부를 절단하여 제거하게 되면, 메인바디(122)는 가로빔(110)으로 부터 순차적으로 전달된 외부 충격에 대하여 후반에 집중적으로 압축변형될 수 있는 것이다.Conversely, when a part of the side reinforcement 128 far away from the transverse beam 110 (adjacent to the side member 35) is cut and removed, the main body 122 is sequentially transferred from the transverse beam 110. It can be compressed and deformed intensively in the second half against external impact.
또한, 측면보강부(128)의 중앙부 일부를 절단하여 제거하게 되면, 메인바디(122)는 가로빔(110)으로부터 순차적으로 전달된 외부 충격에 대하여 중반에 집중적으로 압축변형될 수 있다.In addition, when a part of the central portion of the side reinforcement portion 128 is cut and removed, the main body 122 may be compressed and deformed intensively in the middle with respect to the external impact sequentially transmitted from the transverse beam 110 .
위에서 살펴본 바와 같이, 메인바디(122)의 길이방향을 따라 길게 형성된 측면보강부(128)의 일부를 선택적으로 절단하는 방법과, 측면보강부(128)의 돌출높이가 점점 커지거나 작아지도록 측면보강부(128)를 사선방향으로 절단하는 방법 등을 다양하게 조합하여 사용하게 되면, 메인바디(122)는 차량의 중량이나 크기 등에 따라 요구되는 충돌조건에 부합하는 강성으로 손쉽게 조절(ACR)될 수 있게 된다.As described above, a method of selectively cutting a part of the side reinforcement portion 128 formed long along the longitudinal direction of the main body 122, and side reinforcement such that the protrusion height of the side reinforcement portion 128 gradually increases or decreases When the method of cutting the part 128 in the diagonal direction is used in various combinations, the main body 122 can be easily adjusted (ACR) to a rigidity that meets the crash conditions required according to the weight or size of the vehicle. there will be
이상에서 살펴본 바와 같은, 메인바디(122), 내측보강부(124) 및 측면보강부(128)는, 충격을 흡수하며 소성변형이 가능한 금속소재 또는 엔지니어링 합성수지를 압출성형하여 일체로 형성될 수 있다.As described above, the main body 122, the inner reinforcement part 124, and the side reinforcement part 128 may be integrally formed by extruding a metal material or engineering synthetic resin capable of absorbing shock and plastic deformation. .
이로 인해 크래쉬박스(120)에 대한 강성 보강은 복잡한 제조공정 없이 손쉽게 일거에 이루어질 수 있고, 크래쉬박스(120)의 형성을 위한 부품수가 최소화될 수 있어 자동차 제조공정의 단순화가 도모될 수 있게 된다.Due to this, the rigidity reinforcement for the crash box 120 can be easily made in one step without a complicated manufacturing process, and the number of parts for forming the crash box 120 can be minimized, so that the automobile manufacturing process can be simplified.
한편, 본 발명의 실시예에 따른 크래쉬박스(120) 강성보강형 범퍼 프레임(100)의 제조과정을 도 5를 참조하여 단계별로 설명하면 다음과 같다.On the other hand, the manufacturing process of the crash box 120, rigidity-reinforced bumper frame 100 according to an embodiment of the present invention will be described step-by-step with reference to FIG. 5 .
먼저, 작업자는, 도 5의 (a)에 도시된 바와 같이, 크래쉬박스(120) 즉, 메인바디(122), 내측보강부(124) 및 측면보강부(128)가 일체로 압출성형되도록 압출가공(S10)을 수행하게 된다.First, as shown in (a) of FIG. 5 , the operator extrudes the crash box 120 , that is, the main body 122 , the inner reinforcement part 124 and the side reinforcement part 128 to be integrally extruded. Processing (S10) is performed.
이때, 압출가공(S10)은, 크래쉬박스(120)의 외곽형상에 대응하는 다이(die)가 구비된 컨테이너에 원재료인 금속재 또는 엔지니어링 합성수지를 투입하는 과정과, 내측보강부(124)와 측면보강부(128)에 각각 대응하는 심봉(mandrel)이 형성된 가압부재(ram)를 이용하여 원재료를 컨테이너 바깥으로 가압토출시키는 과정으로 이루어질 수 있다.At this time, the extrusion process (S10) is a process of injecting a raw material metal material or engineering synthetic resin into a container provided with a die corresponding to the outer shape of the crash box 120, and the inner reinforcement part 124 and the side reinforcement It may be made in a process of pressurizing and discharging the raw material to the outside of the container using a pressing member (ram) formed with a mandrel corresponding to the portion 128, respectively.
이러한 압출가공(S10)으로 인해, 본 발명에 따른 크래쉬박스(120)는 복잡한 제조공정 없이 단일한 원재료로 손쉽게 여러 보강구조와 일체로 제작될 수 있고, 치수 및 표면 정밀도가 우수하며 일정하고 균일한 강성과 가공성을 갖는 크래쉬박스(120)가 대량으로 제작될 수 있게 된다.Due to this extrusion process (S10), the crash box 120 according to the present invention can be easily manufactured integrally with several reinforcing structures from a single raw material without a complicated manufacturing process, and has excellent dimensional and surface precision and is uniform and uniform. The crash box 120 having rigidity and workability can be mass-produced.
다음으로, 작업자는, 도 5의 (b)에 도시된 바와 같이, 압출형성된 크래쉬박스(120)에 마운팅브라켓(126)이 형성되도록 제1 절단가공(S20)을 수행하게 된다.Next, the operator performs a first cutting process (S20) so that the mounting bracket 126 is formed in the extruded crash box 120, as shown in FIG. 5(b).
이러한 제1 절단가공(S20)은, 일체로 압출형성된 크래쉬박스(120)의 일단부에서 메인바디(122)의 상단면과 하단면을 제외한 부분을 절단하여 제거함으로써 이루어지게 된다.This first cutting process (S20) is made by cutting and removing the part except for the upper and lower surfaces of the main body 122 from one end of the integrally extruded crash box 120 .
다음으로, 작업자는, 도 5의 (c)에 도시된 바와 같이, 차량의 중량이나 크기 등에 따라 요구되는 충돌조건에 부합하는 강성의 크래쉬박스(120)를 형성하기 위해 제2 절단가공(S30)을 수행하게 된다.Next, the operator, as shown in FIG. 5 (c), a second cutting process (S30) to form a rigid crash box 120 that meets the crash conditions required according to the weight or size of the vehicle. will perform
이때의 절단가공은, 상술한 바와 같이, 메인바디(122)의 길이방향을 따라 길게 형성된 측면보강부(128)의 일부를 선택적으로 절단하는 방법과, 측면보강부(128)의 돌출높이가 점점 커지거나 작아지도록 측면보강부(128)를 사선방향으로 절단하는 방법 등을 다양하게 조합하여 이루어질 수 있다.(ACR)The cutting process at this time is, as described above, a method of selectively cutting a part of the side reinforcement part 128 formed long along the longitudinal direction of the main body 122, and the protrusion height of the side reinforcement part 128 gradually increases. It can be made by various combinations of methods of cutting the side reinforcement portion 128 in an oblique direction so that it becomes larger or smaller. (ACR)
마지막으로, 작업자는, 도 5의 (d)에 도시된 바와 같이, 제2 절단가공(S30)이 완료된 크래쉬박스(120)와 가로빔(110)이 상호 결합되도록 접합가공(S40)을 수행하게 된다.Finally, the operator, as shown in Fig. 5 (d), the second cutting processing (S30) is completed, the crash box 120 and the transverse beam 110 to perform a bonding processing (S40) to be coupled to each other. do.
이때, 크래쉬박스(120)의 마운팅브라켓(126)과 가로빔(110)은 서로 끼움결합된 후 용접됨으로써 견고하게 결합될 수 있게 된다.At this time, the mounting bracket 126 and the transverse beam 110 of the crash box 120 can be firmly coupled by being welded after being fitted with each other.
본 발명에 따른 크래쉬박스(120) 강성보강형 범퍼 프레임(100)으로 인해, 크래쉬박스(120)에 대한 강성 보강은 간편한 제조공정으로 손쉽게 이루어질 수 있고, 최소화된 부품수로 제조될 수 있어 자동차 제조공정의 단순화가 도모될 수 있으며, 다양한 차량의 충돌조건에 부합하는 크래쉬박스(120)의 강성 조절이 측면보강부(128)에 대한 단순한 절단가공으로 자유자재로 이루어질 수 있게 된다.Due to the crash box 120 rigidity-reinforced bumper frame 100 according to the present invention, rigidity reinforcement for the crash box 120 can be easily achieved through a simple manufacturing process and can be manufactured with a minimized number of parts, so that the automobile manufacturing process can be simplified, and the rigidity adjustment of the crash box 120 that meets the collision conditions of various vehicles can be freely made by simple cutting of the side reinforcement portion 128 .
앞에서, 본 발명의 특정한 실시예가 설명되고 도시되었지만 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 자명한 일이다. 따라서, 그러한 수정예 또는 변형예들은 본 발명의 기술적 사상이나 관점으로부터 개별적으로 이해되어서는 안 되며, 변형된 실시예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

Claims (5)

  1. 차량의 폭방향으로 길게 배치되는 가로빔과, 상기 가로빔의 좌우측에 결합되는 한 쌍의 크래쉬박스를 포함하여 차량의 전방에서 가해지는 충격을 흡수하도록 차체에 설치되는 범퍼 프레임으로서, A bumper frame installed on the vehicle body to absorb shocks applied from the front of the vehicle, including a transverse beam disposed long in the width direction of the vehicle, and a pair of crash boxes coupled to left and right sides of the transverse beam,
    상기 크래쉬박스는,The crash box is
    중공형 파이프 형상으로 이루어진 메인바디; A main body made of a hollow pipe shape;
    상기 메인바디의 중공에 격자형태를 이루며 상기 메인바디의 길이방향으로 형성되어 상기 메인바디의 강성을 보강하는 내측보강부; 및an inner reinforcing part that forms a grid in the hollow of the main body and is formed in the longitudinal direction of the main body to reinforce the rigidity of the main body; and
    상기 메인바디의 길이방향을 따라 상기 메인바디의 상,하단면에서 각각 돌출 형성되어 상기 가로빔과 결합하는 마운팅브라켓을 포함하는 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임.Crash box rigidity-reinforced bumper frame, characterized in that it includes mounting brackets respectively protruded from the upper and lower end surfaces of the main body along the longitudinal direction of the main body and coupled to the transverse beam.
  2. 제1항에 있어서,According to claim 1,
    상기 크래쉬박스는,The crash box is
    중앙에 보강포켓이 상기 메인바디의 길이방향을 따라 형성되도록 상기 메인바디의 좌,우측면에서 각각 돌출형성되어 상기 메인바디의 강성을 추가적으로 보강하는 측면보강부를 더 포함하는 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임.Crash box rigidity-reinforced type, characterized in that it further comprises a side reinforcement portion which is formed to protrude from the left and right side surfaces of the main body so that a reinforcing pocket is formed in the center along the longitudinal direction of the main body to further reinforce the rigidity of the main body bumper frame.
  3. 제2항에 있어서,3. The method of claim 2,
    상기 메인바디, 상기 내측보강부 및 상기 측면보강부는, The main body, the inner reinforcement part and the side reinforcement part,
    충격을 흡수하며 소성변형이 가능한 금속소재 또는 엔지니어링 합성수지를 압출성형하여 일체로 형성되는 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임.Crash box rigidity-reinforced bumper frame, characterized in that it is integrally formed by extruding a metal material or engineering synthetic resin capable of absorbing shock and plastic deformation.
  4. 제2항에 있어서,3. The method of claim 2,
    상기 측면보강부는,The side reinforcement part,
    차량의 중량이나 크기에 따라 요구되는 충돌조건에 부합하는 강성이 맞춤식으로 조절되도록, 상기 메인바디의 길이방향을 따라 소정 길이로 절단되어 사용되는 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임.Crash box rigidity-reinforced bumper frame, characterized in that it is cut to a predetermined length along the longitudinal direction of the main body and used so that rigidity that meets the required collision conditions according to the weight or size of the vehicle is customized.
  5. 제2항에 있어서,3. The method of claim 2,
    상기 메인바디는,The main body is
    사각형, 육각형 또는 팔각형의 단면형상을 갖는 각파이프로 이루어지거나, 원형 또는 타원형의 단면을 갖는 파이프로 이루어진 것을 특징으로 하는 크래쉬박스 강성보강형 범퍼 프레임.A crash box rigidity-reinforced bumper frame, characterized in that it is made of a square pipe having a rectangular, hexagonal or octagonal cross-section, or a pipe having a circular or oval cross-section.
PCT/KR2021/018094 2020-12-30 2021-12-02 Bumper frame having crash boxes with reinforced rigidity WO2022145762A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0187992 2020-12-30
KR1020200187992A KR102492467B1 (en) 2020-12-30 2020-12-30 Bumper frame that reinforces the rigidity of a crash box

Publications (1)

Publication Number Publication Date
WO2022145762A1 true WO2022145762A1 (en) 2022-07-07

Family

ID=82260529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2021/018094 WO2022145762A1 (en) 2020-12-30 2021-12-02 Bumper frame having crash boxes with reinforced rigidity

Country Status (2)

Country Link
KR (1) KR102492467B1 (en)
WO (1) WO2022145762A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003276533A (en) * 2002-03-26 2003-10-02 Fuji Heavy Ind Ltd Bumper support structure for vehicle
US6871890B2 (en) * 2002-04-12 2005-03-29 Nissan Motor Co., Ltd. Bumper mounting structure for vehicle
JP2005162061A (en) * 2003-12-03 2005-06-23 Mitsubishi Alum Co Ltd Shock absorbing member for vehicle
KR20110058470A (en) * 2009-11-26 2011-06-01 주식회사 성우하이텍 Crash box in automotive bumper system
KR101537861B1 (en) * 2013-11-25 2015-07-17 롯데케미칼 주식회사 Manufacturing method of crash box for vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100764502B1 (en) 2006-10-04 2007-10-09 기아자동차주식회사 Absorbing impact device of crash box
JP2009286202A (en) 2008-05-28 2009-12-10 Kobe Steel Ltd Reinforcement structure for bending member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003276533A (en) * 2002-03-26 2003-10-02 Fuji Heavy Ind Ltd Bumper support structure for vehicle
US6871890B2 (en) * 2002-04-12 2005-03-29 Nissan Motor Co., Ltd. Bumper mounting structure for vehicle
JP2005162061A (en) * 2003-12-03 2005-06-23 Mitsubishi Alum Co Ltd Shock absorbing member for vehicle
KR20110058470A (en) * 2009-11-26 2011-06-01 주식회사 성우하이텍 Crash box in automotive bumper system
KR101537861B1 (en) * 2013-11-25 2015-07-17 롯데케미칼 주식회사 Manufacturing method of crash box for vehicle

Also Published As

Publication number Publication date
KR20220095950A (en) 2022-07-07
KR102492467B1 (en) 2023-01-26

Similar Documents

Publication Publication Date Title
EP3372454B1 (en) Vehicle body structure
DE102012015627B4 (en) Vehicle body structure of a vehicle and manufacturing method thereof
US10479302B2 (en) Impact absorbing structure of vehicles
CN107000791B (en) Vehicle frame
WO2013095046A1 (en) Bumper back beam with built-in fiber reinforced composite having hollow section, and bumper comprising same
CN1151954A (en) Vehicle body structure
US11312420B2 (en) Vehicle front structure
WO2022145762A1 (en) Bumper frame having crash boxes with reinforced rigidity
WO2022145763A1 (en) Bumper frame having regidity-reinforced horizontal beam
CN106184384B (en) Vehicle body reinforcing structure
US11214311B2 (en) Vehicle structure and method of manufacturing vehicle
JPH06227333A (en) Bumper unit
ITRM930126A1 (en) IMPROVEMENT IN VEHICLE SEATS.
KR101046171B1 (en) Bulkhead for Side Seal Unit
CN106427843A (en) Vehicle body framework structure
JP6206304B2 (en) Vehicle frame structure
CN109963752B (en) Impact absorbing structure for vehicle
US20030072900A1 (en) Impact energy absorbing structure
WO2015137547A1 (en) Vehicle bumper
JPH07156834A (en) Frame reinforcing structure of vehicle body
JPH05238338A (en) Support bracket for knee panel
CN211592476U (en) Automobile anti-collision beam
CN210652996U (en) Automobile energy absorption piece, energy absorption box and automobile
JPH115564A (en) Side member structure of vehicle
CN220842679U (en) Sub-frame of vehicle, body assembly of vehicle and vehicle

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21915560

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21915560

Country of ref document: EP

Kind code of ref document: A1