JP2015186945A - Vehicle bumper reinforcement - Google Patents

Vehicle bumper reinforcement Download PDF

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Publication number
JP2015186945A
JP2015186945A JP2014064553A JP2014064553A JP2015186945A JP 2015186945 A JP2015186945 A JP 2015186945A JP 2014064553 A JP2014064553 A JP 2014064553A JP 2014064553 A JP2014064553 A JP 2014064553A JP 2015186945 A JP2015186945 A JP 2015186945A
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Japan
Prior art keywords
vehicle
bumper reinforcement
plate
bent
fan
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Pending
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JP2014064553A
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Japanese (ja)
Inventor
中西　誠
Makoto Nakanishi
誠 中西
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Toyoda Iron Works Co Ltd
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Toyoda Iron Works Co Ltd
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Priority to JP2014064553A priority Critical patent/JP2015186945A/en
Priority to PCT/JP2014/077019 priority patent/WO2015145835A1/en
Publication of JP2015186945A publication Critical patent/JP2015186945A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • 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
    • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

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

Abstract

PROBLEM TO BE SOLVED: To enable a retreat ramp part to properly receive a buffer load even during off-set collision with a fine lap in a vehicle bumper reinforcement in which the retreat ramp part is provided at an end part.SOLUTION: In a vehicle bumper reinforcement, a flabellate widening part 20 is provided at each retreat ramp part 12 and an outer side plate 22 is bent so as to separate from an inner side plate 24 to arrange the outer side plate 22 substantially parallel with a vehicle width direction. The structure allows the vehicle bumper reinforcement to properly receive a buffer load even during off-set collision with a fine lap. Thus, impact absorption performance is properly achieved through compressive deformation of a vehicle bumper reinforcement 10 itself. Further, the buffer load received by the flabellate widening part 20 is transmitted from the vehicle bumper reinforcement 10 to a crush box 16 and thus the crush box 16 is compressively deformed in an axial direction in a proper manner to achieve the impact absorption performance.

Description

本発明は車両用バンパーリインフォースメントに係り、特に、中空角筒材によって構成されているとともに端部が車体側へ接近するように傾斜している車両用バンパーリインフォースメントの改良に関するものである。   The present invention relates to a bumper reinforcement for a vehicle, and more particularly to an improvement of a bumper reinforcement for a vehicle which is made of a hollow rectangular tube and is inclined so that an end portion approaches the vehicle body.

(a) 車両の前後方向に離間して位置する一対の外側板および内側板と、それ等の外側板および内側板を連結する複数の連結板とを有し、車両幅方向に配置される角形閉断面の長手形状の中空角筒材を用いて構成されているとともに、(b) その中空角筒材の長手方向の端部に車体側へ接近するように傾斜させられた後退傾斜部が設けられている車両用バンパーリインフォースメントが知られている（特許文献１参照）。   (a) A square having a pair of outer plates and inner plates that are spaced apart in the longitudinal direction of the vehicle, and a plurality of connecting plates that connect the outer plates and the inner plates, and arranged in the vehicle width direction. (B) A receding inclined portion that is inclined so as to approach the vehicle body side is provided at the longitudinal end of the hollow rectangular tube material. A known bumper reinforcement for vehicles is known (see Patent Document 1).

特開２０１１−１２６４９０号公報JP 2011-126490 A

しかしながら、このように後退傾斜部が設けられた車両用バンパーリインフォースメントにおいては、その後退傾斜部の傾斜角度が大きくなると、例えば図１９に示すように衝突バリア５０とのラップ（車両幅方向の重なり）が小さい微小ラップのオフセット衝突の場合、後退傾斜部１２の傾斜に応じて車両内側向きに衝突荷重Ｆが作用するため、その後退傾斜部１２が曲げ変形し易くなって衝突荷重Ｆを適切に受け止めることができなくなる。このため、その車両用バンパーリインフォースメント２２０自体の圧縮変形（座屈）による衝撃吸収性能が損なわれる。また、図１９のように衝撃吸収部材としてクラッシュボックス１６が設けられている場合には、後退傾斜部１２の曲げ変形に伴ってクラッシュボックス１６にモーメントＭが発生して横倒れし易くなり、そのクラッシュボックス１６による衝撃吸収性能も損なわれる。   However, in the bumper reinforcement for a vehicle provided with the backward inclined portion as described above, when the inclination angle of the backward inclined portion is increased, for example, as shown in FIG. In the case of an offset collision with a small lap), the collision load F acts inward of the vehicle in accordance with the inclination of the backward inclination portion 12, so that the backward inclination portion 12 is easily bent and deformed, and the collision load F is appropriately set. I can't take it. For this reason, the impact absorption performance by the compression deformation (buckling) of the vehicle bumper reinforcement 220 itself is impaired. Further, when the crash box 16 is provided as an impact absorbing member as shown in FIG. 19, a moment M is generated in the crash box 16 along with the bending deformation of the receding inclined portion 12, and it tends to fall sideways. The impact absorption performance by the crash box 16 is also impaired.

本発明は以上の事情を背景として為されたもので、その目的とするところは、端部に後退傾斜部が設けられている車両用バンパーリインフォースメントにおいて、微小ラップのオフセット衝突時でも後退傾斜部によって衝突荷重が適切に受け止められるようにすることにある。   The present invention has been made against the background described above, and the object of the present invention is a vehicle bumper reinforcement in which a backward inclined portion is provided at an end portion, and a backward inclined portion even at the time of an offset collision of a minute lap. The purpose of this is to allow the collision load to be properly received.

かかる目的を達成するために、第１発明は、(a) 車両の前後方向に離間して位置する一対の外側板および内側板と、それ等の外側板および内側板を連結する複数の連結板とを有し、車両幅方向に配置される角形閉断面の長手形状の中空角筒材を用いて構成されているとともに、(b) その中空角筒材の長手方向の端部に車体側へ接近するように傾斜させられた後退傾斜部が設けられている車両用バンパーリインフォースメントにおいて、(c) 前記後退傾斜部には、前記外側板が前記内側板から離間するように曲げられ、その内側板との間の間隔である幅寸法が前記長手方向の端縁側へ向かうに従って拡大する扇状拡幅部が設けられていることを特徴とする。   In order to achieve such an object, the first invention provides (a) a pair of outer plates and inner plates that are spaced apart from each other in the front-rear direction of the vehicle, and a plurality of connecting plates that connect the outer plates and the inner plates. And (b) to the vehicle body side at the end in the longitudinal direction of the hollow rectangular tube material. In the bumper reinforcement for a vehicle provided with a receding inclined part inclined so as to approach, (c) the receding inclined part is bent so that the outer side plate is separated from the inner side plate, and the inner side thereof A fan-shaped widened portion is provided, in which a width dimension, which is a distance between the plate and the plate, is increased toward the edge in the longitudinal direction.

第２発明は、第１発明の車両用バンパーリインフォースメントにおいて、(a) 前記中空角筒材は押出成形によって製造された中空押出形材で、(b) その中空押出形材の長手方向の端部における前記複数の連結板には、それぞれその長手方向の端縁からスリットが設けられ、そのスリットを挟んで前記外側板が前記内側板から離間するように曲げられることにより前記扇状拡幅部が形成されているとともに、(c) 前記スリットを挟んで分離された前記外側板および前記内側板が補強部材によって互いに一体的に連結されていることを特徴とする。   The second invention is the bumper reinforcement for a vehicle according to the first invention, wherein (a) the hollow rectangular tubular material is a hollow extruded shape produced by extrusion molding, and (b) an end in the longitudinal direction of the hollow extruded shape. The plurality of connecting plates in the section are each provided with a slit from the longitudinal edge, and the fan-shaped widened portion is formed by bending the outer plate away from the inner plate across the slit. And (c) the outer plate and the inner plate separated by sandwiching the slit are integrally connected to each other by a reinforcing member.

第３発明は、第１発明の車両用バンパーリインフォースメントにおいて、(a) 前記中空角筒材は押出成形によって製造されるとともに前記複数の連結板が何れも屈曲形状とされている中空押出形材で、(b) 前記扇状拡幅部では前記屈曲形状が延ばされて屈曲の程度が小さくされることにより前記幅寸法が拡大されていることを特徴とする。   According to a third aspect of the present invention, there is provided the bumper reinforcement for a vehicle according to the first aspect, wherein: (a) the hollow rectangular tube material is manufactured by extrusion molding, and the plurality of connecting plates are all bent. (B) The fan-shaped widened portion is characterized in that the width dimension is expanded by extending the bent shape and reducing the degree of bending.

第４発明は、第３発明の車両用バンパーリインフォースメントにおいて、(a) 前記外側板および前記内側板は互いに平行で、(b) 前記連結板は、前記外側板および前記内側板に対して垂直姿勢になる垂直部を中間部分に備えており、その垂直部の両側の２箇所に屈曲部が設けられていることを特徴とする。   4th invention is the bumper reinforcement for vehicles of 3rd invention, (a) The said outer side board and the said inner side board are mutually parallel, (b) The said connection board is perpendicular | vertical with respect to the said outer side board and the said inner side board. The vertical part which becomes an attitude | position is provided in the intermediate part, and the bending part is provided in two places of the both sides of the vertical part, It is characterized by the above-mentioned.

第５発明は、第１発明〜第４発明の何れかの車両用バンパーリインフォースメントにおいて、前記扇状拡幅部における前記外側板の車両幅方向に対する傾斜角度θは１０°以下であることを特徴とする。   According to a fifth invention, in the bumper reinforcement for a vehicle according to any one of the first to fourth inventions, an inclination angle θ with respect to the vehicle width direction of the outer plate in the fan-shaped widened portion is 10 ° or less. .

このような車両用バンパーリインフォースメントにおいては、後退傾斜部に扇状拡幅部が設けられ、外側板が内側板すなわち車体から離間するように幅寸法が拡大されているため、その外側板の車両幅方向からの傾斜角度θが小さくなり、微小ラップのオフセット衝突時でも衝突荷重を適切に受け止めることができるようになる。これにより、その車両用バンパーリインフォースメント自体の圧縮変形による衝撃吸収性能が適切に得られるようになる。また、その車両用バンパーリインフォースメントを支持するようにクラッシュボックス等の衝撃吸収部材が設けられている場合には、その衝撃吸収部材も適切に軸方向へ圧縮変形させられるようになって、衝撃吸収性能が適切に得られるようになる。   In such a bumper reinforcement for a vehicle, a fan-shaped widened portion is provided in the receding inclined portion, and the width dimension is enlarged so that the outer plate is separated from the inner plate, that is, the vehicle body. The inclination angle θ from the angle becomes smaller, and the collision load can be appropriately received even during the offset collision of the minute lap. Thereby, the impact absorption performance by the compression deformation of the bumper reinforcement for the vehicle itself can be obtained appropriately. In addition, when an impact absorbing member such as a crash box is provided so as to support the bumper reinforcement for the vehicle, the impact absorbing member can be appropriately compressed and deformed in the axial direction to absorb the impact. Performance can be obtained appropriately.

第２発明は、中空角筒材として中空押出形材が用いられている場合で、その中空押出形材の端部の連結板にそれぞれスリットが設けられ、外側板が内側板から離間するように曲げられることにより扇状拡幅部が形成されるとともに、その外側板および内側板が補強部材によって一体的に連結されている。したがって、中空押出形材を用いて構成されている車両用バンパーリインフォースメントに対しても、本発明が好適に適用され得、簡単で且つ安価に製造できる。   The second invention is a case where a hollow extruded shape is used as the hollow rectangular tube, and a slit is provided in each of the connecting plates at the end of the hollow extruded shape so that the outer plate is separated from the inner plate. The fan-shaped widened portion is formed by bending, and the outer plate and the inner plate are integrally connected by the reinforcing member. Therefore, the present invention can be suitably applied to a bumper reinforcement for a vehicle configured by using a hollow extruded profile, and can be manufactured easily and inexpensively.

第３発明は、中空角筒材として中空押出形材が用いられている場合で、その中空押出形材には屈曲形状の連結板が設けられているとともに、扇状拡幅部ではその屈曲形状が延ばされて屈曲の程度が小さくされることにより幅寸法が拡大されている。この場合も、中空押出形材を用いて構成されている車両用バンパーリインフォースメントに対しても、本発明が好適に適用され得、簡単で且つ安価に製造できる。また、屈曲形状の連結板を延ばして拡幅しているため、スリットにより切り離して拡幅する場合に比較して補強部材が不要となり、部品点数が少なくなって一層安価に構成できる。   The third invention is the case where a hollow extruded shape is used as the hollow rectangular tube, and the hollow extruded shape is provided with a bent connecting plate, and the bent shape is extended in the fan-shaped widened portion. As a result, the width is expanded by reducing the degree of bending. Also in this case, the present invention can be suitably applied to a bumper reinforcement for a vehicle configured using a hollow extruded profile, and can be manufactured easily and inexpensively. Further, since the bending-shaped connecting plate is extended and widened, a reinforcing member is not required as compared with the case where the bent connecting plate is separated and widened, and the number of parts can be reduced and the structure can be further reduced.

第４発明は、上記屈曲形状の連結板が中間部分に垂直部を備えており、その垂直部の両側の２箇所に屈曲部が設けられている場合で、屈曲部が一箇所のＬ字形状の連結板に比較して拡幅の際の各屈曲部における角度変化が小さくなり、延ばし変形の際の加工硬化等によるダメージが抑制されて割れや破損等が抑制される。また、外側板および内側板に対して垂直姿勢になる垂直部を備えているため、車両衝突時等に外側板が内側板に接近させられる際に、その垂直部によって衝突荷重が適切に受け止められるとともに、その垂直部の変形で衝突荷重を適切に吸収して衝撃を緩和することができる。   In a fourth aspect of the present invention, the bent connecting plate is provided with a vertical portion at an intermediate portion, and the bent portions are provided at two locations on both sides of the vertical portion, and the bent portion has an L-shape at one location. The angle change at each bent portion at the time of widening becomes smaller than that of the connecting plate, and damage due to work hardening or the like at the time of extension deformation is suppressed, so that cracking or breakage is suppressed. In addition, since a vertical portion that is perpendicular to the outer plate and the inner plate is provided, the collision load is appropriately received by the vertical portion when the outer plate is brought close to the inner plate in the event of a vehicle collision or the like. In addition, the impact can be reduced by appropriately absorbing the collision load by the deformation of the vertical portion.

第５発明では、扇状拡幅部における外側板の車両幅方向に対する傾斜角度θが１０°以下であるため、微小ラップのオフセット衝突時でも衝突荷重を適切に受け止めることができる。   In the fifth aspect of the invention, since the inclination angle θ of the outer plate with respect to the vehicle width direction in the fan-shaped widened portion is 10 ° or less, the collision load can be appropriately received even during the offset collision of the minute wrap.

本発明の一実施例である車両用バンパーリインフォースメントを示す図で、車両への配設状態において上方から見た平面図である。It is a figure which shows the bumper reinforcement for vehicles which is one Example of this invention, and is the top view seen from upper direction in the arrangement | positioning state to a vehicle. 図１の車両用バンパーリインフォースメントの２箇所の断面図で、(a) は図１におけるIA−IA矢視部分、すなわち車両幅方向と略平行な中間直線状部の断面図であり、(b) は図１におけるIB−IB矢視部分、すなわち後退傾斜部において幅寸法が滑らかに拡大された扇状拡幅部の断面図である。FIG. 2 is a cross-sectional view of two parts of the vehicle bumper reinforcement of FIG. 1, (a) is a cross-sectional view of an IA-IA arrow portion in FIG. 1, that is, an intermediate linear portion substantially parallel to the vehicle width direction; ) Is a cross-sectional view of the fan-shaped widened portion in which the width dimension is smoothly enlarged at the IB-IB arrow portion in FIG. 図１の車両用バンパーリインフォースメントの製造工程を説明する工程図で、何れも図１に対応する平面図である。FIG. 2 is a process diagram illustrating a manufacturing process of the vehicle bumper reinforcement of FIG. 1, and each is a plan view corresponding to FIG. 1. 図３の(d) 拡開工程でプレスにより中空押出形材の端部の幅寸法を拡げる工程を具体的に説明する断面図である。It is sectional drawing which demonstrates the process of expanding the width dimension of the edge part of a hollow extrusion shape member with a press by the expansion process of (d) of FIG. 図３の(e) 補強工程で車両用バンパーリインフォースメントの端部に一体的に溶接される補強部材を単独で示す斜視図である。It is the perspective view which shows independently the reinforcement member integrally welded to the edge part of the bumper reinforcement for vehicles at the (e) reinforcement process of FIG. 車両と衝突バリアとのラップが小さい微小ラップのオフセット衝突を説明する平面図である。It is a top view explaining offset collision of a minute lap with a small lap of a vehicle and a collision barrier. 本発明の他の実施例を説明する図で、図１に対応する平面図である。It is a figure explaining the other Example of this invention, and is a top view corresponding to FIG. 図７の車両用バンパーリインフォースメントの２箇所の断面図で、(a) は図７におけるVIIA−VIIA矢視部分、すなわち車両幅方向と略平行な中間直線状部の断面図であり、(b) は図１におけるVIIB−VIIB矢視部分、すなわち幅寸法が滑らかに拡大された扇状拡幅部の断面図である。FIG. 8 is a cross-sectional view of two parts of the vehicle bumper reinforcement of FIG. 7, and (a) is a cross-sectional view of a portion taken along arrow VIIA-VIIA in FIG. 7, that is, an intermediate linear portion substantially parallel to the vehicle width direction; FIG. 7 is a cross-sectional view of the VIIB-VIIB arrow portion in FIG. 1, that is, a fan-shaped widened portion in which the width dimension is smoothly expanded. 図７の車両用バンパーリインフォースメントの端部に一体的に溶接される補強部材を単独で示す斜視図である。It is a perspective view which shows independently the reinforcement member integrally welded to the edge part of the bumper reinforcement for vehicles of FIG. 本発明の更に別の実施例を説明する図で、図１に対応する平面図である。It is a figure explaining another Example of this invention, and is a top view corresponding to FIG. 図１０の車両用バンパーリインフォースメントの２箇所の断面図で、(a) は図１０におけるXA−XA矢視部分、すなわち車両幅方向と略平行な中間湾曲部の断面図であり、(b) は図１０におけるXB−XB矢視部分、すなわち後退傾斜部において幅寸法が滑らかに拡大された扇状拡幅部の断面図である。FIG. 11 is a cross-sectional view of the vehicle bumper reinforcement of FIG. 10, wherein (a) is a cross-sectional view of the XA-XA arrow portion in FIG. 10, that is, a cross section of the intermediate curved portion substantially parallel to the vehicle width direction; FIG. 11 is a cross-sectional view of the fan-shaped widened portion in which the width dimension is smoothly enlarged in the XB-XB arrow portion in FIG. 図１０の車両用バンパーリインフォースメントの製造工程を説明する工程図で、何れも図１０に対応する平面図である。It is process drawing explaining the manufacturing process of the bumper reinforcement for vehicles of FIG. 10, All are top views corresponding to FIG. 本発明の更に別の実施例を説明する図で、図１０に対応する平面図である。It is a figure explaining another Example of this invention, and is a top view corresponding to FIG. 本発明の更に別の実施例を説明する図で、屈曲形状の連結板および中間リブを延ばして扇状拡幅部を形成する場合であり、(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図である。FIG. 6 is a view for explaining still another embodiment of the present invention, in which a bent connecting plate and an intermediate rib are extended to form a fan-shaped widened portion, and (a) and (b) are respectively shown in FIG. FIG. 6 is a cross-sectional view corresponding to (b). 本発明の更に別の実施例を説明する図で、屈曲形状の連結板および中間リブを延ばして扇状拡幅部を形成する場合であり、(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図である。FIG. 6 is a view for explaining still another embodiment of the present invention, in which a bent connecting plate and an intermediate rib are extended to form a fan-shaped widened portion, and (a) and (b) are respectively shown in FIG. FIG. 6 is a cross-sectional view corresponding to (b). 本発明の更に別の実施例を説明する図で、屈曲形状の連結板を延ばして扇状拡幅部を形成する場合であり、(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図である。FIG. 9 is a diagram for explaining another embodiment of the present invention, in which a bent connecting plate is extended to form a fan-shaped widened portion, and (a) and (b) are respectively (a) and (b) of FIG. It is sectional drawing corresponding to). 本発明の更に別の実施例を説明する図で、屈曲形状の連結板および中間リブを延ばして扇状拡幅部を形成する場合であり、(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図である。FIG. 6 is a view for explaining still another embodiment of the present invention, in which a bent connecting plate and an intermediate rib are extended to form a fan-shaped widened portion, and (a) and (b) are respectively shown in FIG. FIG. 6 is a cross-sectional view corresponding to (b). 本発明の更に別の実施例を説明する図で、図１に対応する平面図である。It is a figure explaining another Example of this invention, and is a top view corresponding to FIG. 長手方向の端部に後退傾斜部が設けられた従来の車両用バンパーリインフォースメントに関する微小ラップのオフセット衝突を説明する図で、図６に対応する平面図である。It is a figure explaining the offset collision of the micro wrap regarding the conventional bumper reinforcement for vehicles in which the retreat inclination part was provided in the edge part of a longitudinal direction, and is a top view corresponding to FIG.

本発明は、車両前側に取り付けられるバンパーリインフォースメントにも車両後側に取り付けられるバンパーリインフォースメントにも適用され得るが、何れか一方のみに適用するだけでも差し支えない。バンパーリインフォースメントの左右両側の後退傾斜部の何れか一方に適用するだけでも良い。この車両用バンパーリインフォースメントは、後退傾斜部またはその近傍で車体側部材に固定されて支持されるが、その車体側部材との間にクラッシュボックス等の衝撃吸収部材を介在させることが望ましい。   The present invention can be applied to bumper reinforcement attached to the front side of the vehicle and bumper reinforcement attached to the rear side of the vehicle. However, the present invention may be applied to only one of them. It may be applied only to one of the receding slopes on the left and right sides of the bumper reinforcement. The vehicle bumper reinforcement is fixed to and supported by the vehicle body side member at or near the backward inclined portion, and it is desirable to interpose an impact absorbing member such as a crash box between the vehicle body side member.

本発明の車両用バンパーリインフォースメントは、平面視において車体側へ傾斜する後退傾斜部を長手方向の端部に備えており、例えば中間部分では車両幅方向と略平行な直線形状を成していて、端部だけ車体側へ曲げられて後退傾斜部が設けられたものでも良いが、車両用バンパーリインフォースメントの全体が湾曲形状とされている場合でも良いなど、種々の態様が可能である。外側板および内側板は、互いに略平行であることが望ましいが、長手方向と直角な断面において一方が他方に対して傾斜していても差し支えない。   The bumper reinforcement for a vehicle according to the present invention includes a receding inclined portion that inclines toward the vehicle body in a plan view at an end in the longitudinal direction. For example, an intermediate portion has a linear shape substantially parallel to the vehicle width direction. However, it is possible that only the end portion is bent toward the vehicle body side and is provided with a receding inclined portion, but various modes are possible, such as the case where the entire bumper reinforcement for the vehicle may have a curved shape. The outer plate and the inner plate are preferably substantially parallel to each other, but one side may be inclined with respect to the other in a cross section perpendicular to the longitudinal direction.

車両用バンパーリインフォースメントを構成している中空角筒材としては、押出成形によって製造されたアルミニウムやアルミニウム合金、或いはその他の金属の角形の中空押出形材が好適に用いられるが、鋼板等を角筒形状に折り曲げて端部を溶接等により一体的に固定したものなど、種々の態様が可能である。中空押出形材には、外側板や内側板の両側部に外方へ突き出すフランジが設けられても良い。連結板は、一対の外側板および内側板と共に角形閉断面を構成する一対の上連結板および下連結板を有するが、内部に補強用等の中間リブ（仕切り板）が連結板として中空押出形材の軸方向と平行に設けられても良い。   As the hollow rectangular tube material constituting the bumper reinforcement for vehicles, aluminum, aluminum alloy produced by extrusion molding, or other metal square hollow extruded material is preferably used. Various modes are possible, such as a case in which the ends are integrally fixed by welding or the like after being bent into a cylindrical shape. The hollow extruded shape member may be provided with flanges protruding outward on both sides of the outer plate and the inner plate. The connecting plate has a pair of upper connecting plate and lower connecting plate that form a square closed section together with a pair of outer plate and inner plate, and an intermediate rib (partition plate) for reinforcement or the like is hollow extruded as a connecting plate. It may be provided parallel to the axial direction of the material.

扇状拡幅部における外側板は、衝突荷重を適切に受け止める上で車両幅方向に対する傾斜角度θ、すなわち幅方向の端部に向かうに従って車体側へ傾斜する角度が、１０°以下であることが望ましく、５°以下が一層望ましいが、傾斜角度θが１０°より大きい場合、例えば１５°程度でも一定の効果が得られる。この扇状拡幅部は、車両用バンパーリインフォースメントの後退傾斜部に設けられ、例えば車両用バンパーリインフォースメントの長手方向の端縁で幅寸法が最大になるように形成されるが、扇状拡幅部よりも端縁側に幅寸法が略一定の部位が存在しても差し支えない。後退傾斜部の少なくとも一部に、端縁側へ向かうに従って幅寸法が拡大する扇状拡幅部が設けられていれば良い。この扇状拡幅部は、例えば中空角筒材の長手方向の端部の開口内にスライド型などを挿入して外側板に引っ掛け、プレスなどで押圧または引張することにより、その外側板を内側板から離間するように曲げ変形させることによって形成できる。   The outer plate in the fan-shaped widened portion desirably has an inclination angle θ with respect to the vehicle width direction in order to appropriately receive the collision load, that is, an angle inclined toward the vehicle body side toward the end in the width direction is 10 ° or less, Although 5 ° or less is more desirable, when the inclination angle θ is larger than 10 °, a certain effect can be obtained even at about 15 °, for example. This fan-shaped widened portion is provided in the receding inclined portion of the vehicle bumper reinforcement, and is formed to have a maximum width dimension at the longitudinal edge of the vehicle bumper reinforcement, for example, than the fan-shaped widened portion. There may be a portion having a substantially constant width dimension on the edge side. It is only necessary that at least a part of the receding inclined portion is provided with a fan-shaped widened portion whose width dimension increases toward the edge side. The fan-shaped widened portion is formed by, for example, inserting a slide mold or the like into the opening at the end in the longitudinal direction of the hollow rectangular tube material, hooking it on the outer plate, and pressing or pulling the outer plate from the inner plate. It can be formed by bending deformation so as to be separated.

第３発明の連結板の屈曲形状は、例えば一対の外側板および内側板に対して垂直姿勢になる垂直部を中間部分に有し、その垂直部の両側の２箇所に屈曲部を設けたものが適当であるが、屈曲部が一箇所のＬ字形状の連結板を採用することもできるし、湾曲形状であっても良いし、屈曲部を３箇所以上設けることもできるなど、種々の態様が可能である。その屈曲形状の連結板は、扇状拡幅部を形成する際に延ばされて平坦化されるが、完全に平坦に延ばすことは困難で、屈曲の程度が小さくなるようにして拡幅すれば良い。屈曲部が中空押出形材の角筒形状の外側へ突き出している場合、その屈曲部を押圧して平坦化することにより幅寸法を拡大することもできる。屈曲部を押圧して平坦化しつつプレスなどで上側板を押圧または引張して内側板から離間させるようにしても良い。   The bent shape of the connecting plate according to the third aspect of the invention has, for example, a vertical portion that is perpendicular to the pair of outer and inner plates in the middle portion, and bent portions at two locations on both sides of the vertical portion. However, it is possible to adopt an L-shaped connecting plate with one bent portion, a curved shape, or three or more bent portions. Is possible. The bent connecting plate is extended and flattened when the fan-shaped widened portion is formed, but it is difficult to extend it completely flat, and it may be widened so as to reduce the degree of bending. When the bent portion protrudes to the outside of the rectangular tube shape of the hollow extruded profile, the width dimension can be increased by pressing the bent portion and flattening. The upper plate may be pressed or pulled with a press or the like while being pressed to be flattened by the bent portion and separated from the inner plate.

以下、本発明の実施例を、図面を参照しつつ詳細に説明する。なお、以下の実施例における各部の寸法や寸法比、角度、肉厚等は必ずしも正確に表したものではない。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the dimension of each part in the following Examples, a dimension ratio, an angle, a wall thickness, etc. are not necessarily represented correctly.

図１は、フロント側の車両用バンパーリインフォースメント１０を示す図で、車両への配設状態において上方から見た概略平面図である。この車両用バンパーリインフォースメント１０は、図１の左右方向である車両幅方向に長い長手形状を成しており、図１に示す平面視において車両幅方向と略平行な一直線の中間直線状部１１を長手方向の中間部分に備えているとともに、両端部にはそれぞれ車体側へ折り曲げられて車両後方側へ傾斜する後退傾斜部１２が設けられている。そして、その一対の後退傾斜部１２において、それぞれクラッシュボックス１６を介して車体側部材である左右のサイドメンバ１８に固定されて支持されている。この車両用バンパーリインフォースメント１０は左右対称に構成されており、左右のクラッシュボックス１６およびサイドメンバ１８も略左右対称に構成されている。また、車両用バンパーリインフォースメント１０の外側すなわち車両前側には、合成樹脂製のバンパー１９が配設される。   FIG. 1 is a diagram showing a vehicle bumper reinforcement 10 on the front side, and is a schematic plan view seen from above in a state of being installed in a vehicle. This vehicle bumper reinforcement 10 has a long longitudinal shape in the vehicle width direction, which is the left-right direction in FIG. 1, and is a straight intermediate straight portion 11 substantially parallel to the vehicle width direction in plan view shown in FIG. Are provided in the middle part in the longitudinal direction, and at both ends, there are provided receding inclined portions 12 that are bent toward the vehicle body side and inclined toward the vehicle rear side. The pair of backward inclined portions 12 are fixed and supported by left and right side members 18 that are vehicle body side members via crash boxes 16, respectively. The vehicle bumper reinforcement 10 is configured symmetrically, and the left and right crash boxes 16 and side members 18 are also configured substantially symmetrically. A bumper 19 made of synthetic resin is disposed outside the vehicle bumper reinforcement 10, that is, on the vehicle front side.

上記車両用バンパーリインフォースメント１０は、角形閉断面の中空形状を成しており、図２の(a) は図１におけるIA−IA矢視部分、すなわち幅寸法Ｗ１が小さい前記中間直線状部１１における断面図で、図２の(b) は図１におけるIB−IB矢視部分、すなわち前記後退傾斜部１２において幅寸法Ｗ２が徐々に拡大された扇状拡幅部２０における断面図である。これ等の断面図から明らかなように、車両の外側（前側）に位置する外側板２２、および車体側に位置する内側板２４と、それ等の外側板２２、内側板２４の上下の端部を連結する上連結板２６および下連結板２８とによって、全体として略矩形（実施例は長方形）の角形閉断面が構成されている。この車両用バンパーリインフォースメント１０は、アルミニウムの押出成形品である角形の中空押出形材３０（図３の(a) 参照）を主体として構成されており、上記外側板２２、内側板２４、上連結板２６、下連結板２８は一体に連結されている。車両用バンパーリインフォースメント１０は、長手方向の両端に設けられた扇状拡幅部２０を除いて図２(a) に示す断面形状と略同じ一定の断面形状であり、扇状拡幅部２０では外側板２２が内側板２４から離間する方向へ曲げられて、それ等の間隔である幅寸法Ｗ２が滑らかに拡大している。   The vehicle bumper reinforcement 10 has a hollow shape with a square closed cross section, and FIG. 2 (a) shows the IA-IA arrow portion in FIG. 1, that is, the intermediate linear portion 11 having a small width dimension W1. FIG. 2B is a cross-sectional view of the fan-shaped widened portion 20 in which the width dimension W2 is gradually enlarged in the portion taken along the line IB-IB in FIG. As is clear from these cross-sectional views, the outer plate 22 located on the outside (front side) of the vehicle, the inner plate 24 located on the vehicle body side, and the upper and lower ends of the outer plate 22 and the inner plate 24. The upper connecting plate 26 and the lower connecting plate 28 connecting the two form a substantially rectangular (in the embodiment, rectangular) rectangular closed section as a whole. The vehicle bumper reinforcement 10 is mainly composed of a rectangular hollow extruded member 30 (see FIG. 3A), which is an extruded product of aluminum, and includes the outer plate 22, the inner plate 24, and the upper plate. The connecting plate 26 and the lower connecting plate 28 are integrally connected. The bumper reinforcement 10 for a vehicle has a constant cross-sectional shape that is substantially the same as the cross-sectional shape shown in FIG. Are bent in a direction away from the inner plate 24, and the width dimension W2 which is an interval between them is smoothly expanded.

図２の(b) に示す扇状拡幅部２０は、中空押出形材３０の長手方向の端部における前記上連結板２６および下連結板２８に、それぞれ長手方向の端縁からスリット３２が設けられ、そのスリット３２を挟んで外側板２２が内側板２４から離間するように曲げられることによって形成されている。このように外側板２２が内側板２４から離間するように曲げられることにより、その扇状拡幅部２０における外側板２２は、図１の平面視において車両幅方向と略平行（車両幅方向に対する傾斜角度θが３°以下）にされている。また、上記スリット３２を挟んで分離された外側板２２および内側板２４は、補強部材３４によって互いに一体的に連結されている。補強部材３４は金属板をプレスにより曲げ加工したもので、図５に単独で示すように構成されており、外側板２２および内側板２４との間の端縁側の開口を閉塞する閉塞板部３６と、外側板２２の外側に係止される外側係止板部３８と、内側板２４の内側に係止される内側係止板部４０と、スリット３０によって分離された上連結板２６、下連結板２８の外側にそれぞれ重ね合わされる連結板部４２、４４と、を備えている。そして、係止板部３８、４０、および連結板部４２、４４がそれぞれ外側板２２、内側板２４、上連結板２６、下連結板２８にアーク溶接、スポット溶接等によって溶接されることにより、扇状拡幅部２０が所定強度で拡開状態に保持される。   In the fan-shaped widened portion 20 shown in FIG. 2 (b), slits 32 are provided on the upper connecting plate 26 and the lower connecting plate 28 at the ends in the longitudinal direction of the hollow extruded profile 30 from the longitudinal edges. The outer plate 22 is bent so as to be separated from the inner plate 24 with the slit 32 interposed therebetween. Thus, the outer plate 22 is bent so as to be separated from the inner plate 24, whereby the outer plate 22 in the fan-shaped widened portion 20 is substantially parallel to the vehicle width direction in plan view of FIG. 1 (inclination angle with respect to the vehicle width direction). θ is 3 ° or less. The outer plate 22 and the inner plate 24 separated with the slit 32 interposed therebetween are integrally connected to each other by a reinforcing member 34. The reinforcing member 34 is formed by bending a metal plate by pressing, and is configured as shown alone in FIG. 5, and a closing plate portion 36 that closes the opening on the edge side between the outer plate 22 and the inner plate 24. An outer locking plate portion 38 that is locked to the outside of the outer plate 22, an inner locking plate portion 40 that is locked to the inner side of the inner plate 24, an upper connecting plate 26 separated by the slit 30, And connecting plate portions 42 and 44 that are superposed on the outside of the connecting plate 28, respectively. Then, the locking plate portions 38, 40 and the connecting plate portions 42, 44 are welded to the outer plate 22, the inner plate 24, the upper connecting plate 26, the lower connecting plate 28 by arc welding, spot welding, etc., respectively. The fan-shaped widened portion 20 is held in an expanded state with a predetermined strength.

そして、このように後退傾斜部１２に扇状拡幅部２０が設けられ、外側板２２が車両幅方向と略平行にされると、車両用バンパーリインフォースメント１０およびクラッシュボックス１６による衝撃吸収性能が適切に得られるようになる。図６は、衝突面５２を有する衝突バリア５０に対して所定の車速Ｖ１で車両の右側前部を衝突させるオフセット衝突を示す平面図で、衝突バリア５０と車両用バンパーリインフォースメント１０とのラップ（車両幅方向の重なり）が小さい微小ラップの場合であり、扇状拡幅部２０では外側板２２が車両進行方向に対して略直角であるため、衝突バリア５０から入力される衝突荷重Ｆが車両前後方向と略平行になり、その衝突荷重Ｆが扇状拡幅部２０によって適切に受け止められる。これにより、車両用バンパーリインフォースメント１０自体の圧縮変形よる衝撃吸収性能が適切に得られるようになる。また、扇状拡幅部２０で受け止められた衝突荷重Ｆは、車両用バンパーリインフォースメント１０からクラッシュボックス１６に伝達されるため、そのクラッシュボックス１６が軸方向へ適切に圧縮変形させられるようになり、クラッシュボックス１６による衝撃吸収性能も適切に得られるようになる。   When the fan-shaped widened portion 20 is provided in the backward inclined portion 12 and the outer side plate 22 is made substantially parallel to the vehicle width direction in this way, the shock absorbing performance by the vehicle bumper reinforcement 10 and the crash box 16 is appropriately obtained. It will be obtained. FIG. 6 is a plan view showing an offset collision in which the right front portion of the vehicle collides with the collision barrier 50 having the collision surface 52 at a predetermined vehicle speed V1, and is a lap between the collision barrier 50 and the vehicle bumper reinforcement 10 ( In the fan-shaped widened portion 20, the outer plate 22 is substantially perpendicular to the vehicle traveling direction, so that the collision load F input from the collision barrier 50 is the vehicle longitudinal direction. The collision load F is appropriately received by the fan-shaped widened portion 20. Thereby, the impact absorption performance by the compression deformation of the vehicle bumper reinforcement 10 itself can be appropriately obtained. Further, since the collision load F received by the fan-shaped widened portion 20 is transmitted from the vehicle bumper reinforcement 10 to the crash box 16, the crash box 16 can be appropriately compressed and deformed in the axial direction, causing a crash. The shock absorption performance by the box 16 can also be obtained appropriately.

次に、以上のように構成された車両用バンパーリインフォースメント１０の製造方法の一例を、図３に示す製造工程の工程図に基づいて説明する。図３の(a) 〜(e) は、何れも前記図１に対応する平面図であり、(a) は押出成形工程で、アルミニウム材料を用いて全長に亘って前記図２の(a) と同じ一定の角形閉断面の直線状の中空押出形材３０を押出成形によって製造する。図２の(a) は、この中空押出形材３０の断面図、すなわち図３の(a) におけるIIIA−IIIA矢視部分の断面図でもある。   Next, an example of a method for manufacturing the vehicular bumper reinforcement 10 configured as described above will be described based on the process diagram of the manufacturing process shown in FIG. 3 (a) to 3 (e) are all plan views corresponding to FIG. 1, and FIG. 3 (a) is an extrusion process, using the aluminum material over the entire length of FIG. 2 (a). A straight hollow extruded section 30 having the same square closed cross section as the above is manufactured by extrusion. 2A is also a cross-sectional view of the hollow extruded profile 30, that is, a cross-sectional view taken along the line IIIA-IIIA in FIG.

図３の(b) は曲げ成形工程で、中空押出形材３０の両端部をプレスにより曲げ加工して後退傾斜部１２を形成する。次の(c) のスリット入れ工程では、レーザ加工等によって後退傾斜部１２の連結板２６、２８にスリット３２を形成する。また、(d) の拡開工程では、後退傾斜部１２の外側板２２を内側板２４から離間する方向へ曲げ加工して扇状拡幅部２０を形成する。具体的には、例えば図４に示すように、中空押出形材３０の外側板２２側をダイス６０によって保持した状態で、一対のスライド型６２をそれぞれ中空押出形材３０の長手方向の端部の開口内に挿入して外側板２２に引っ掛け、プレスなどで引っ張ることにより、その外側板２２を内側板２４から離間するように曲げ変形させる。その後、(e) の補強工程で、別体に形成された補強部材３４を扇状拡幅部２０の拡開側の端部に装着して溶接する。これにより、目的とする車両用バンパーリインフォースメント１０が製造される。   FIG. 3B shows a bending process in which both end portions of the hollow extruded shape member 30 are bent by a press to form the receding inclined portion 12. In the next slit insertion step (c), the slits 32 are formed in the connecting plates 26 and 28 of the receding inclined portion 12 by laser processing or the like. In the expanding step (d), the fan-shaped widened portion 20 is formed by bending the outer plate 22 of the receding inclined portion 12 in a direction away from the inner plate 24. Specifically, for example, as shown in FIG. 4, the pair of slide dies 62 are respectively connected to the end portions in the longitudinal direction of the hollow extruded profile 30 while the outer plate 22 side of the hollow extruded profile 30 is held by the die 60. The outer plate 22 is bent and deformed so as to be separated from the inner plate 24 by being inserted into the opening and hooked on the outer plate 22 and pulled by a press or the like. Thereafter, in the reinforcing step (e), the reinforcing member 34 formed separately is attached to the end portion on the expansion side of the fan-shaped widened portion 20 and welded. Thereby, the target bumper reinforcement 10 for vehicles is manufactured.

ここで、このような本実施例の車両用バンパーリインフォースメント１０によれば、両端部の後退傾斜部１２にそれぞれ扇状拡幅部２０が設けられ、外側板２２が内側板２４すなわち車体から離間するように幅寸法Ｗ２が拡大されることにより、その外側板２２が車両幅方向と略平行とされているため、図６に示す微小ラップのオフセット衝突時でも衝突荷重Ｆを適切に受け止めることができるようになる。これにより、その車両用バンパーリインフォースメント１０自体の圧縮変形よる衝撃吸収性能が適切に得られるようになる。また、扇状拡幅部２０で受け止められた衝突荷重Ｆは、車両用バンパーリインフォースメント１０からクラッシュボックス１６に伝達されるため、そのクラッシュボックス１６が軸方向へ適切に圧縮変形させられるようになり、クラッシュボックス１６による衝撃吸収性能も適切に得られるようになる。   Here, according to the vehicle bumper reinforcement 10 of the present embodiment, the fan-shaped widened portions 20 are provided on the receding inclined portions 12 at both ends, and the outer plate 22 is separated from the inner plate 24, that is, the vehicle body. Since the outer side plate 22 is made substantially parallel to the vehicle width direction by enlarging the width dimension W2, the collision load F can be appropriately received even during the offset collision of the minute lap shown in FIG. become. Thereby, the shock absorption performance by the compression deformation of the bumper reinforcement 10 for the vehicle itself can be appropriately obtained. Further, since the collision load F received by the fan-shaped widened portion 20 is transmitted from the vehicle bumper reinforcement 10 to the crash box 16, the crash box 16 can be appropriately compressed and deformed in the axial direction, causing a crash. The shock absorption performance by the box 16 can also be obtained appropriately.

また、中空角筒材として中空押出形材３０が用いられており、その中空押出形材３０の端部すなわち後退傾斜部１２の連結板２６、２８にそれぞれスリット３２が設けられ、外側板２２が内側板２４から離間するように曲げられることにより扇状拡幅部２０が形成されるとともに、その外側板２２および内側板２４が補強部材３４によって一体的に連結されているため、中空押出形材３０を用いて車両用バンパーリインフォースメント１０を簡単で且つ安価に製造できる。   Further, a hollow extruded profile 30 is used as the hollow rectangular tube material, and slits 32 are provided in the end portions of the hollow extruded profile 30, that is, the connecting plates 26 and 28 of the receding inclined portion 12, respectively, and the outer plate 22 is provided. The fan-shaped widened portion 20 is formed by being bent away from the inner plate 24, and the outer plate 22 and the inner plate 24 are integrally connected by the reinforcing member 34. It is possible to manufacture the bumper reinforcement 10 for a vehicle easily and inexpensively.

次に、本発明の他の実施例を説明する。なお、以下の実施例において前記実施例と実質的に共通する部分には同一の符号を付して詳しい説明を省略する。   Next, another embodiment of the present invention will be described. In the following embodiments, parts that are substantially the same as those in the above embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

図７の車両用バンパーリインフォースメント７０は、図７におけるVIIA−VIIA矢視断面およびVIIB−VIIB矢視断面を示す図８の(a) 、(b) の断面図から明らかなように、前記実施例に比較して連結板２６、２８と平行に中間リブ（仕切り板）７４が設けられた中空押出形材７２が用いられている点が相違する。そして、扇状拡幅部２０では、その中間リブ７４にもスリット３２が設けられて外側板２２が内側板２４から離間するように曲げられているとともに、図９に示すように３枚の連結板部７６を有する補強部材７８によって、スリット３２が設けられた上連結板２６、下連結板２８、および中間リブ７４がそれぞれ連結されることにより、上側板２２および下側板２４が互いに一体的に連結されている。補強部材７８は、例えば押出成形によって製造され、溶接等によって上連結板２６、下連結板２８、中間リブ７４に一体的に固定される。本実施例では中間リブ７４を有することから、車両用バンパーリインフォースメント７０自体の強度や衝撃吸収性能を容易に確保することができる。中間リブ７４は、上連結板２６や下連結板２８と同様に外側板２２と内側板２４とを連結する連結板である。   The vehicle bumper reinforcement 70 in FIG. 7 is the same as that shown in FIGS. 8 (a) and 8 (b) showing the cross section taken along arrows VIIA-VIIA and VIIB-VIIB in FIG. Compared to the example, a difference is that a hollow extruded shape member 72 in which an intermediate rib (partition plate) 74 is provided in parallel with the connecting plates 26 and 28 is used. In the fan-shaped widened portion 20, slits 32 are also provided in the intermediate rib 74 so that the outer side plate 22 is bent away from the inner side plate 24 and, as shown in FIG. The upper connecting plate 26, the lower connecting plate 28, and the intermediate rib 74 provided with the slits 32 are connected by the reinforcing member 78 having 76, whereby the upper plate 22 and the lower plate 24 are integrally connected to each other. ing. The reinforcing member 78 is manufactured by extrusion molding, for example, and is integrally fixed to the upper connecting plate 26, the lower connecting plate 28, and the intermediate rib 74 by welding or the like. In this embodiment, since the intermediate rib 74 is provided, it is possible to easily ensure the strength and shock absorbing performance of the vehicle bumper reinforcement 70 itself. The intermediate rib 74 is a connecting plate that connects the outer plate 22 and the inner plate 24 in the same manner as the upper connecting plate 26 and the lower connecting plate 28.

図１０の車両用バンパーリインフォースメント１１０は、平面視において車幅方向の中央部分が車両前側へ膨出する滑らかな湾曲形状を成しており、車幅方向の両端部において車体側へ接近するように傾斜している部分は後退傾斜部１１２である。この車両用バンパーリインフォースメント１１０は、角形閉断面の中空形状を成しており、図１１の(a) は図１０におけるXA−XA矢視部分、すなわち幅寸法Ｗ１が一定の中間湾曲部１１４の断面図で、図１１の(b) は図１０におけるXB−XB矢視部分、すなわち後退傾斜部１１２において幅寸法Ｗ２が徐々に拡大している扇状拡幅部１１６の断面図である。これ等の断面図から明らかなように、車両の外側（前側）に位置する外側板１２２、および車体側に位置する内側板１２４と、それ等の外側板１２２、内側板１２４の上下の端部を連結する上連結板１２６および下連結板１２８とによって、全体として略矩形（実施例は長方形）の角形閉断面が構成されている。また、上連結板１２６と下連結板１２８との間には、一対の補強用の中間リブ１３０、１３２が外側板１２２および内側板１２４を連結するように設けられている。この車両用バンパーリインフォースメント１１０は、アルミニウムの押出成形品で、上記外側板１２２、内側板１２４、上連結板１２６、下連結板１２８、中間リブ１３０、１３２は一体に構成されており、長手方向の両端の後退傾斜部１１２を除いて図１１(a) に示す断面形状と略同じ一定の断面形状であり、後退傾斜部１１２の扇状拡幅部１１６では外側板１２２が内側板１２４から離間するように曲げられて幅寸法Ｗ２が徐々に拡大している。   The vehicle bumper reinforcement 110 in FIG. 10 has a smooth curved shape in which the central portion in the vehicle width direction bulges to the vehicle front side in plan view, and approaches the vehicle body side at both ends in the vehicle width direction. The portion inclined in the direction is a backward inclined portion 112. This vehicular bumper reinforcement 110 has a hollow shape with a square closed cross section, and FIG. 11 (a) shows the XA-XA arrow portion in FIG. 10, that is, the intermediate curved portion 114 having a constant width dimension W1. FIG. 11B is a cross-sectional view of the fan-shaped widened portion 116 where the width dimension W2 gradually increases in the XB-XB arrow portion in FIG. As is clear from these cross-sectional views, the outer side plate 122 positioned on the outer side (front side) of the vehicle, the inner side plate 124 positioned on the vehicle body side, and the upper and lower ends of the outer side plate 122 and the inner side plate 124. The upper connecting plate 126 and the lower connecting plate 128 that connect the two form a substantially rectangular (in the embodiment, rectangular) rectangular closed section as a whole. A pair of reinforcing intermediate ribs 130 and 132 are provided between the upper connecting plate 126 and the lower connecting plate 128 so as to connect the outer plate 122 and the inner plate 124. The vehicle bumper reinforcement 110 is an aluminum extrusion-molded product, and the outer plate 122, the inner plate 124, the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 are integrally formed, and the longitudinal direction thereof. 11 except for the receding inclined portions 112 at both ends of the outer peripheral plate, the outer plate 122 is spaced apart from the inner plate 124 in the fan-shaped widened portion 116 of the receding inclined portion 112. The width dimension W2 is gradually enlarged.

上記外側板１２２および内側板１２４は、車両幅方向において滑らかに湾曲させられた略平板形状を成しており、略垂直な姿勢で互いに略平行に設けられている。上連結板１２６、下連結板１２８、中間リブ１３０、１３２は、それぞれ外側板１２２、内側板１２４に対して略垂直姿勢になる略水平な垂直部１３４を中間部分に備えているとともに、その垂直部１３４の両側の２箇所に屈曲部１３６、１３８が設けられた屈曲形状を成している。具体的には、上連結板１２６および下側の中間リブ１３２は、垂直部１３４が下方へ平行移動するように変位させられており、一対の屈曲部１３６、１３８よりも前側および後側の部分がそれぞれ斜め上方へ延びる傾斜部とされて外側板１２２、内側板１２４に連結された略同一の断面形状とされている。また、下連結板１２８および上側の中間リブ１３０は、垂直部１３４が上方へ平行移動するように変位させられており、一対の屈曲部１３６、１３８よりも前側および後側の部分がそれぞれ斜め下方へ延びる傾斜部とされて外側板１２２、内側板１２４に連結された略同一の断面形状とされている。   The outer plate 122 and the inner plate 124 have a substantially flat plate shape that is smoothly curved in the vehicle width direction, and are provided substantially parallel to each other in a substantially vertical posture. The upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 are provided with a substantially horizontal vertical portion 134 in a substantially vertical posture with respect to the outer plate 122 and the inner plate 124, respectively. A bent shape in which bent portions 136 and 138 are provided at two positions on both sides of the portion 134 is formed. Specifically, the upper connecting plate 126 and the lower intermediate rib 132 are displaced so that the vertical portion 134 translates downward, and the front and rear portions of the pair of bent portions 136 and 138 are disposed. Are inclined portions extending obliquely upward, and have substantially the same cross-sectional shape connected to the outer plate 122 and the inner plate 124. Further, the lower connecting plate 128 and the upper intermediate rib 130 are displaced so that the vertical portion 134 translates upward, and the front and rear portions of the pair of bent portions 136 and 138 are obliquely downward, respectively. It is made into the inclination part extended to the substantially same cross-sectional shape connected with the outer side board 122 and the inner side board 124. As shown in FIG.

図１１の(a) に示す中間湾曲部１１４と、(b) に示す扇状拡幅部１１６とでは、上記上連結板１２６、下連結板１２８、中間リブ１３０、１３２の屈曲の程度の相違によって幅寸法Ｗ１、Ｗ２が相違させられており、それ等の屈曲形状に沿った長さ寸法は幅寸法Ｗ１、Ｗ２の相違に拘らず略同じである。すなわち、図１１の(b) の扇状拡幅部１１６では、上連結板１２６、下連結板１２８、中間リブ１３０、１３２がそれぞれ平坦になるように延ばされ、屈曲部１３６、１３８の屈曲角度が広げられているのであり、その分だけ外側板１２２が内側板１２４に対して車両前側へ突出させられ、前記各実施例と同様に車両幅方向と略平行（車両幅方向に対する傾斜角度θが３°以下で、実施例では約２°）にされている。但し、この実施例では、扇状拡幅部１１６よりも車両幅方向の外側に、その扇状拡幅部１１６に連続して幅寸法Ｗ２が略一定の幅広部が設けられている。   The intermediate curved portion 114 shown in FIG. 11A and the fan-shaped widened portion 116 shown in FIG. 11B have different widths depending on the bending degree of the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132. The dimensions W1 and W2 are made different from each other, and the length dimensions along these bent shapes are substantially the same regardless of the differences in the width dimensions W1 and W2. That is, in the fan-shaped widened portion 116 in FIG. 11B, the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 are extended so as to be flat, and the bending angles of the bent portions 136 and 138 are set. As a result, the outer plate 122 protrudes toward the front of the vehicle with respect to the inner plate 124, and is substantially parallel to the vehicle width direction (the inclination angle θ with respect to the vehicle width direction is 3 as in the above embodiments). Or less (in the embodiment, about 2 °). However, in this embodiment, a wide portion having a substantially constant width dimension W2 is provided on the outer side of the fan-shaped wide portion 116 in the vehicle width direction, continuously to the fan-shaped wide portion 116.

次に、以上のように構成された車両用バンパーリインフォースメント１１０の製造方法の一例を、図１２に示す製造工程の工程図に基づいて説明する。図１２の(a) 〜(c) は、何れも図１０に対応する平面図であり、(a) は押出成形工程で、アルミニウム材料を用いて全長に亘って図１１の(a) と同じ一定の角形閉断面の直線状の中空押出形材１４０を押出成形によって製造する。図１１の(a) は、この中空押出形材１４０の断面図、すなわち図１２の(a) におけるXIIA−XIIA矢視部分の断面図でもある。   Next, an example of a method for manufacturing the vehicular bumper reinforcement 110 configured as described above will be described based on the process diagram of the manufacturing process shown in FIG. 12 (a) to 12 (c) are all plan views corresponding to FIG. 10, and FIG. 12 (a) is an extrusion process and is the same as FIG. 11 (a) over the entire length using an aluminum material. A straight hollow extruded member 140 having a constant square closed cross section is manufactured by extrusion. (A) of FIG. 11 is also a cross-sectional view of the hollow extruded shape member 140, that is, a cross-sectional view taken along the line XIIA-XIIA in (a) of FIG.

図１２の(b) は拡幅工程で、例えば前記図４に示すようにスライド型６２を外側板１２２に引っ掛けて曲げ加工することにより、屈曲形状の上連結板１２６、下連結板１２８、中間リブ１３０、１３２をそれぞれ引っ張り延ばしながら、外側板１２２を内側板１２４から離間するように曲げ変形させて扇状拡幅部１１６を形成する。液圧成形などの他の手法で外側板１２２を曲げ加工することも可能である。その場合に、上連結板１２６、下連結板１２８、中間リブ１３０、１３２は、垂直部１３４の両側の２箇所に屈曲部１３６、１３８が設けられているため、拡幅の際の各屈曲部１３６、１３８における角度変化が、屈曲部が１箇所の場合に比較して小さくなり、延ばし変形の際の加工硬化等によるダメージが抑制される。   FIG. 12B shows a widening process. For example, as shown in FIG. 4, the slide die 62 is hooked on the outer plate 122 and bent, thereby bending the upper connecting plate 126, the lower connecting plate 128, and the intermediate rib. While extending 130 and 132, the outer plate 122 is bent and deformed so as to be separated from the inner plate 124, thereby forming the fan-shaped widened portion 116. It is also possible to bend the outer plate 122 by other methods such as hydraulic forming. In that case, the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 are provided with bent portions 136 and 138 at two positions on both sides of the vertical portion 134. Therefore, each bent portion 136 at the time of widening is provided. The angle change at 138 is smaller than that when there is only one bent portion, and damage due to work hardening or the like during extended deformation is suppressed.

図１２の(c) は曲げ成形工程で、上記扇状拡幅部１１６が設けられた中空押出形材１４０をプレスにより湾曲形状に曲げ成形する。これにより、目的とする車両用バンパーリインフォースメント１１０が製造される。なお、(b) の拡幅工程を、(c) の曲げ成形工程の後で行うことも可能である。   FIG. 12C shows a bending process, in which the hollow extruded shape member 140 provided with the fan-shaped widened portion 116 is bent into a curved shape by pressing. Thereby, the target bumper reinforcement 110 for vehicles is manufactured. Note that the widening step (b) can also be performed after the bending step (c).

このような本実施例の車両用バンパーリインフォースメント１１０においても、両端部の後退傾斜部１１２にそれぞれ扇状拡幅部１１６が設けられ、外側板１２２が内側板１２４すなわち車体から離間するように幅寸法Ｗ２が拡大されることにより、その外側板１２２が車両幅方向と略平行とされているため、微小ラップのオフセット衝突時でも衝突荷重Ｆを適切に受け止めることが可能で、前記実施例と同様の作用効果が得られる。   In the vehicle bumper reinforcement 110 of this embodiment as well, the fan-shaped widened portions 116 are provided in the receding inclined portions 112 at both ends, and the width dimension W2 so that the outer side plate 122 is separated from the inner side plate 124, that is, the vehicle body. As the outer plate 122 is made substantially parallel to the vehicle width direction, the collision load F can be appropriately received even during an offset collision of a minute lap, and the same action as in the above embodiment is achieved. An effect is obtained.

また、中空角筒材として中空押出形材１４０が用いられており、その中空押出形材１４０には屈曲形状の上連結板１２６、下連結板１２８、中間リブ１３０、１３２が設けられているとともに、扇状拡幅部１１６ではその屈曲形状が平坦に延ばされて屈曲の程度が小さくされることにより幅寸法Ｗ２が拡大されているため、中空押出形材１４０を用いて車両用バンパーリインフォースメント１１０を簡単で且つ安価に製造できる。   Further, a hollow extruded shape 140 is used as the hollow rectangular tube material, and the hollow extruded shape 140 is provided with a bent upper connection plate 126, a lower connection plate 128, and intermediate ribs 130 and 132. In the fan-shaped widened portion 116, the bent shape is extended flat and the width dimension W2 is expanded by reducing the degree of bending, so that the vehicle bumper reinforcement 110 is formed using the hollow extruded shape 140. Simple and inexpensive to manufacture.

また、上連結板１２６、下連結板１２８、中間リブ１３０、１３２を平坦に延ばして幅寸法Ｗ２を拡幅しているため、前記実施例のようにスリット３２により切り離して拡幅する場合に比較して補強部材３４等が不要となり、部品点数が少なくなって一層安価に構成できる。   In addition, since the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 are flattened to widen the width dimension W2, as compared with the case of separating and widening by the slit 32 as in the above embodiment. The reinforcing member 34 and the like are not necessary, and the number of parts is reduced, so that it can be configured at a lower cost.

また、外側板１２２および内側板１２４を連結する上連結板１２６、下連結板１２８、中間リブ１３０、１３２は、垂直部１３４の両側の２箇所に屈曲部１３６、１３８が設けられているため、屈曲部が一箇所のＬ字形状の連結板に比較して拡幅の際の各屈曲部１３６、１３８における角度変化が小さくなり、延ばし変形の際の加工硬化等によるダメージが抑制されて割れや破損等が適切に抑制される。   Further, the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 that connect the outer plate 122 and the inner plate 124 are provided with bent portions 136 and 138 at two positions on both sides of the vertical portion 134. Compared to an L-shaped connecting plate with a single bent portion, the change in angle at each bent portion 136, 138 at the time of widening becomes smaller, damage due to work hardening at the time of extended deformation is suppressed, and cracks and breakage Etc. are appropriately suppressed.

また、上記上連結板１２６、下連結板１２８、中間リブ１３０、１３２は、外側板１２２および内側板１２４に対して垂直姿勢になる垂直部１３４を備えているため、後退傾斜部１１２を含めた車両用バンパーリインフォースメント１１０の全長において、車両衝突時に入力荷重Ｆによって外側板１２２が内側板１２４に対して接近させられる際に、その垂直部１３４によって入力荷重Ｆが適切に受け止められるとともに、その垂直部１３４の変形で入力荷重Ｆを適切に吸収して衝撃を緩和することができる。   In addition, the upper connecting plate 126, the lower connecting plate 128, and the intermediate ribs 130 and 132 include a vertical portion 134 that is perpendicular to the outer plate 122 and the inner plate 124. In the entire length of the bumper reinforcement 110 for the vehicle, when the outer plate 122 is brought closer to the inner plate 124 by the input load F at the time of a vehicle collision, the vertical portion 134 appropriately receives the input load F and the vertical The deformation of the portion 134 can appropriately absorb the input load F and reduce the impact.

図１３の車両用バンパーリインフォースメント１５０は、前記車両用バンパーリインフォースメント１１０に比較して長手方向の両端部に幅寸法Ｗ２が一定の幅広部が無く、扇状拡幅部１１６が端縁まで達している点が相違する。   In the vehicle bumper reinforcement 150 of FIG. 13, compared to the vehicle bumper reinforcement 110, there is no wide portion having a constant width dimension W2 at both ends in the longitudinal direction, and the fan-shaped wide portion 116 reaches the edge. The point is different.

図１４の(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図で、この車両用バンパーリインフォースメント１７０は、前記車両用バンパーリインフォースメント１１０に比較して、上連結板１７４の垂直部１３４が上方へ突き出しているとともに、下連結板１７６の垂直部１３４が下方へ突き出している点が相違する。このような車両用バンパーリインフォースメント１７０も、(a) に示す断面形状の中空押出形材１７２の長手方向の両端部をそれぞれ前記実施例と同様にして(b) に示すように拡幅することにより、外側板１２２が内側板１２４から離間するように車両前側へ曲げられた扇状拡幅部１１６が形成される。本実施例では上下に突き出す上連結板１７４および下連結板１７６の垂直部１３４を互いに接近させるように押圧することによっても、外側板１２２が内側板１２４から離間するように拡幅することができる。   14 (a) and 14 (b) are cross-sectional views corresponding to FIGS. 11 (a) and 11 (b), respectively. This vehicle bumper reinforcement 170 is compared to the vehicle bumper reinforcement 110, The difference is that the vertical portion 134 of the upper connecting plate 174 protrudes upward, and the vertical portion 134 of the lower connecting plate 176 protrudes downward. Such vehicular bumper reinforcement 170 is also formed by widening both ends in the longitudinal direction of the hollow extruded profile 172 having a cross-sectional shape shown in (a) as shown in (b) in the same manner as in the above-described embodiment. A fan-shaped widened portion 116 that is bent toward the vehicle front side so that the outer side plate 122 is separated from the inner side plate 124 is formed. In this embodiment, the outer plate 122 can also be widened so as to be separated from the inner plate 124 by pressing the vertical portions 134 of the upper connecting plate 174 and the lower connecting plate 176 protruding vertically.

図１５の(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図で、この車両用バンパーリインフォースメント１８０は、前記車両用バンパーリインフォースメント１１０に比較して、上連結板１８４、下連結板１８５、中間リブ１８６、１８７の断面形状が、何れも中央付近の１箇所の屈曲部１８８で折り曲げられた略Ｌ字形の屈曲形状で、前記垂直部１３４を備えていない点が相違する。このような車両用バンパーリインフォースメント１８０も、(a) に示す断面形状の中空押出形材１８２の長手方向の両端部をそれぞれ前記実施例と同様にして(b) に示すように拡幅することにより、外側板１２２が内側板１２４から離間するように車両前側へ曲げられた扇状拡幅部１１６が形成される。   15 (a) and 15 (b) are cross-sectional views corresponding to FIGS. 11 (a) and 11 (b), respectively. This vehicle bumper reinforcement 180 is compared with the vehicle bumper reinforcement 110, as shown in FIG. Each of the upper connecting plate 184, the lower connecting plate 185, and the intermediate ribs 186 and 187 has a substantially L-shaped bent shape that is bent at one bent portion 188 near the center, and includes the vertical portion 134. There is no difference. Such a vehicle bumper reinforcement 180 is also obtained by widening both ends in the longitudinal direction of the hollow extruded section 182 having a cross-sectional shape shown in (a) as shown in (b) in the same manner as in the above-described embodiment. A fan-shaped widened portion 116 that is bent toward the vehicle front side so that the outer side plate 122 is separated from the inner side plate 124 is formed.

図１６の(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図で、この車両用バンパーリインフォースメント１９０は、前記車両用バンパーリインフォースメント１１０に比較して、中間リブ１３０、１３２を備えていない断面が単純な略正方形の角筒形状である点が相違する。このような車両用バンパーリインフォースメント１９０も、(a) に示す断面形状の中空押出形材１９２の長手方向の両端部をそれぞれ前記実施例と同様にして(b) に示すように拡幅することにより、外側板１２２が内側板１２４から離間するように車両前側へ曲げられた扇状拡幅部１１６が形成される。   FIGS. 16A and 16B are cross-sectional views corresponding to FIGS. 11A and 11B, respectively. This vehicle bumper reinforcement 190 is compared with the vehicle bumper reinforcement 110, as shown in FIG. The difference is that the cross section without the intermediate ribs 130 and 132 is a simple, substantially square prismatic shape. Such a vehicle bumper reinforcement 190 is also obtained by widening both ends in the longitudinal direction of the hollow extruded section 192 having a cross-sectional shape shown in (a) as shown in (b) in the same manner as in the above-described embodiment. A fan-shaped widened portion 116 that is bent toward the vehicle front side so that the outer side plate 122 is separated from the inner side plate 124 is formed.

図１７の(a) 、(b) はそれぞれ図１１の(a) 、(b) に対応する断面図で、この車両用バンパーリインフォースメント２００は、前記車両用バンパーリインフォースメント１１０に比較して、外側板１２２および内側板１２４の両側端部にそれぞれ外向きに突き出すフランジ２０４、２０６が設けられている点が相違する。このような車両用バンパーリインフォースメント２００も、(a) に示す断面形状の中空押出形材２０２の長手方向の両端部をそれぞれ(b) に示すように拡幅することにより、外側板１２２が内側板１２４から離間するように車両前側へ曲げられた扇状拡幅部１１６が形成される。この実施例では、フランジ２０４、２０６を把持して外側板１２２を内側板１２４から離間するように車両前側へ曲げ変形させることにより扇状拡幅部１１６を形成することができる。   17 (a) and 17 (b) are cross-sectional views corresponding to FIGS. 11 (a) and 11 (b), respectively. This vehicle bumper reinforcement 200 is compared with the vehicle bumper reinforcement 110, as shown in FIG. The difference is that flanges 204 and 206 projecting outward are provided at both end portions of the outer plate 122 and the inner plate 124, respectively. In such a bumper reinforcement 200 for a vehicle, the outer side plate 122 is also expanded into the inner side plate by widening both ends in the longitudinal direction of the hollow extruded shape member 202 having the cross-sectional shape shown in (a) as shown in (b). A fan-shaped widened portion 116 is formed that is bent toward the vehicle front side so as to be separated from the vehicle 124. In this embodiment, the fan-shaped widened portion 116 can be formed by gripping the flanges 204 and 206 and bending the outer plate 122 away from the inner plate 124 toward the front side of the vehicle.

図１８は、前記図１に対応する平面図で、この車両用バンパーリインフォースメント２１０は前記車両用バンパーリインフォースメント１０に比較して扇状拡幅部２１０の傾斜角度θが相違する。すなわち、この実施例では、扇状拡幅部２１２における外側板２２が車両幅方向に対して車体側へ傾斜する傾斜角度θが略１０°で、比較的大きいが、この場合でも後退傾斜部１２のままよりも傾斜角度θが小さくなるため、それだけ衝突荷重Ｆを適切に受け止めることができるようになり、前記各実施例と同様の作用効果が得られる。   FIG. 18 is a plan view corresponding to FIG. 1, and the vehicle bumper reinforcement 210 is different from the vehicle bumper reinforcement 10 in the inclination angle θ of the fan-shaped widened portion 210. That is, in this embodiment, the inclination angle θ at which the outer side plate 22 in the fan-shaped widened portion 212 is inclined toward the vehicle body side with respect to the vehicle width direction is approximately 10 °, which is relatively large. Since the inclination angle θ becomes smaller than that, the collision load F can be appropriately received accordingly, and the same effects as those in the above embodiments can be obtained.

以上、本発明の実施例を図面に基づいて詳細に説明したが、これ等はあくまでも一実施形態であり、本発明は当業者の知識に基づいて種々の変更，改良を加えた態様で実施することができる。   As mentioned above, although the Example of this invention was described in detail based on drawing, these are one embodiment to the last, and this invention is implemented in the aspect which added the various change and improvement based on the knowledge of those skilled in the art. be able to.

１０、７０、１１０、１５０、１７０、１８０、１９０、２００、２１０：車両用バンパーリインフォースメント １２、１１２：後退傾斜部 ２０、１１６、２１２：扇状拡幅部 ２２、１２２：外側板 ２４、１２４：内側板 ２６、１２６、１７４、１８４：上連結板 ２８、１２８、１７６、１８５：下連結板 ３０、７２、１４０、１７２、１８２、１９２、２０２：中空押出形材（中空角筒材） ３２：スリット ３４、７８：補強部材 ７４、１３０、１３２、１８６、１８７：中間リブ（連結板） １３４：垂直部 １３６、１３８：屈曲部 Ｗ１、Ｗ２：幅寸法 θ：傾斜角度   10, 70, 110, 150, 170, 180, 190, 200, 210: Bumper reinforcement for vehicle 12, 112: Backward inclined part 20, 116, 212: Fan-shaped widened part 22, 122: Outer plate 24, 124: Inside Plates 26, 126, 174, 184: Upper connecting plates 28, 128, 176, 185: Lower connecting plates 30, 72, 140, 172, 182, 192, 202: Hollow extruded profiles (hollow square tube materials) 32: Slits 34, 78: Reinforcing members 74, 130, 132, 186, 187: Intermediate rib (connecting plate) 134: Vertical portion 136, 138: Bending portion W1, W2: Width dimension θ: Inclination angle

Claims (5)

車両の前後方向に離間して位置する一対の外側板および内側板と、該外側板および内側板を連結する複数の連結板とを有し、車両幅方向に配置される角形閉断面の長手形状の中空角筒材を用いて構成されているとともに、
該中空角筒材の長手方向の端部に車体側へ接近するように傾斜させられた後退傾斜部が設けられている車両用バンパーリインフォースメントにおいて、
前記後退傾斜部には、前記外側板が前記内側板から離間するように曲げられ、該内側板との間の間隔である幅寸法が前記長手方向の端縁側へ向かうに従って拡大する扇状拡幅部が設けられている
ことを特徴とする車両用バンパーリインフォースメント。 Longitudinal shape of a rectangular closed cross section having a pair of outer plates and inner plates that are spaced apart in the longitudinal direction of the vehicle, and a plurality of connecting plates that connect the outer plates and the inner plates, and arranged in the vehicle width direction And is configured using a hollow square tube material,
In the bumper reinforcement for a vehicle provided with a receding inclined portion that is inclined so as to approach the vehicle body side at an end portion in the longitudinal direction of the hollow rectangular tube material,
The receding inclined portion has a fan-shaped widened portion that is bent so that the outer plate is separated from the inner plate, and a width dimension that is an interval between the inner plate and the outer plate expands toward the edge side in the longitudinal direction. Bumper reinforcement for vehicles characterized by being provided. 前記中空角筒材は押出成形によって製造された中空押出形材で、
該中空押出形材の長手方向の端部における前記複数の連結板には、それぞれ該長手方向の端縁からスリットが設けられ、該スリットを挟んで前記外側板が前記内側板から離間するように曲げられることにより前記扇状拡幅部が形成されているとともに、
前記スリットを挟んで分離された前記外側板および前記内側板が補強部材によって互いに一体的に連結されている
ことを特徴とする請求項１に記載の車両用バンパーリインフォースメント。 The hollow square tube material is a hollow extruded shape produced by extrusion molding,
The plurality of connecting plates at the longitudinal ends of the hollow extruded shape member are each provided with a slit from the longitudinal edge, and the outer plate is separated from the inner plate across the slit. The fan-shaped widened portion is formed by being bent,
The bumper reinforcement for a vehicle according to claim 1, wherein the outer plate and the inner plate separated with the slit interposed therebetween are integrally connected to each other by a reinforcing member. 前記中空角筒材は押出成形によって製造されるとともに前記複数の連結板が何れも屈曲形状とされている中空押出形材で、
前記扇状拡幅部では前記屈曲形状が延ばされて屈曲の程度が小さくされることにより前記幅寸法が拡大されている
ことを特徴とする請求項１に記載の車両用バンパーリインフォースメント。 The hollow rectangular tube material is manufactured by extrusion and a hollow extruded shape in which each of the plurality of connecting plates is bent.
The bumper reinforcement for a vehicle according to claim 1, wherein the width dimension is expanded by extending the bent shape and reducing the degree of bending in the fan-shaped widened portion. 前記外側板および前記内側板は互いに平行で、
前記連結板は、前記外側板および前記内側板に対して垂直姿勢になる垂直部を中間部分に備えており、該垂直部の両側の２箇所に屈曲部が設けられている
ことを特徴とする請求項３に記載の車両用バンパーリインフォースメント。 The outer plate and the inner plate are parallel to each other,
The connecting plate is provided with a vertical portion that is perpendicular to the outer plate and the inner plate in an intermediate portion, and bent portions are provided at two locations on both sides of the vertical portion. The bumper reinforcement for vehicles according to claim 3. 前記扇状拡幅部における前記外側板の車両幅方向に対する傾斜角度θは１０°以下である
ことを特徴とする請求項１〜４の何れか１項に記載の車両用バンパーリインフォースメント。 The vehicle bumper reinforcement according to any one of claims 1 to 4, wherein an inclination angle θ of the outer plate with respect to the vehicle width direction in the fan-shaped widened portion is 10 ° or less.
JP2014064553A 2014-03-26 2014-03-26 Vehicle bumper reinforcement Pending JP2015186945A (en)

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