WO2012073621A1 - Front end section construction of vehicle - Google Patents

Front end section construction of vehicle Download PDF

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Publication number
WO2012073621A1
WO2012073621A1 PCT/JP2011/074789 JP2011074789W WO2012073621A1 WO 2012073621 A1 WO2012073621 A1 WO 2012073621A1 JP 2011074789 W JP2011074789 W JP 2011074789W WO 2012073621 A1 WO2012073621 A1 WO 2012073621A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
members
pedestrian
bumper beam
bumper
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Application number
PCT/JP2011/074789
Other languages
French (fr)
Japanese (ja)
Inventor
茂樹 木原
省 北川
福富　健
篤史 池田
Original Assignee
三菱自動車工業株式会社
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Application filed by 三菱自動車工業株式会社 filed Critical 三菱自動車工業株式会社
Publication of WO2012073621A1 publication Critical patent/WO2012073621A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B62D25/084—Radiator supports
    • 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
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

Definitions

  • the present invention relates to a front end structure of a vehicle, and more particularly to a technique for improving pedestrian protection.
  • a vehicle body member formed by processing a steel plate to form a framework of the vehicle is generally constructed such that a radiator core support member is joined to a tip portion of a pair of left and right side member members and a bumper beam member is attached. It is done.
  • a front end portion of a vehicle needs to minimize damage to the pedestrian when in contact with the pedestrian, and various structures for protecting the pedestrian have been developed.
  • the front end structure of the vehicle is configured such that the radiator can be displaced with respect to the upper member which is a part of the radiator core support member, and the upper member is preferentially deformed in comparison with the radiator.
  • a bumper beam member is attached to the tip portion of the side member member via an impact absorbing member adjusted to collapse in a collision or the like.
  • Front end structures of vehicles have been developed.
  • the bumper beam member protrudes forward more than the radiator core support member, and since the height position of the bumper beam member is substantially equal to the height position of the pedestrian's knee, the bumper beam member becomes the pedestrian's knee
  • the present invention has been made to solve such problems, and an object of the present invention is to provide a front end structure of a vehicle capable of improving pedestrian protection.
  • the radiator core support member is joined and passed to the upper surface of each front end of the pair of left and right front side members, and the pair of left and right front side members
  • the bumper beam member is attached to a front end of the vehicle at each end of the pair of left and right front side member members so as to project forward from the upper support member above the bumper beam member.
  • Characterized by comprising Te (claim 1).
  • the auxiliary member has a flange extending to the front of the vehicle, and the cross section is formed in a hat shape (claim 2). Further, the flange may be formed with a bead extending along the flange (claim 3). Further, the bumper beam member may be provided at each end of the pair of left and right front side member members so as to protrude forward of the vehicle and be attached via a crash member that absorbs an impact by being crushed (claims) Item 4).
  • the auxiliary member which protrudes from the upper support member of the radiator core support member to the front of the vehicle and extends in the vehicle width direction is provided above the bumper beam member.
  • the auxiliary member has a hat-like cross section, so that the auxiliary member can secure a certain degree of rigidity, and can deform when it contacts a pedestrian and can absorb impact force, and extends forward of the vehicle By having the flange, the impact force can be absorbed by deformation when the flange contacts the pedestrian (claim 2).
  • the flange can be easily deformed when it comes in contact with a pedestrian and can absorb impact force (claim 3).
  • the bumper beam members are attached to the front ends of the pair of left and right front side member members via crush members projecting forward of the vehicle, even if the crush members largely project forward of the vehicle, the bumper beam By providing the auxiliary member above the members, the pedestrian protection can be improved (claim 4).
  • FIG. 1 is a perspective view showing a front end structure of a vehicle according to the present invention. It is the figure which looked at the front-end part structure of a vehicle from the arrow A direction of FIG.
  • FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1; It is a figure which shows the behavior of a leg of a pedestrian when a leg of a pedestrian contacts a front end part of vehicles. It is a figure which shows the modification of the front-end part structure of the vehicle which concerns on this invention.
  • FIG. 1 is a perspective view of a front end structure of a vehicle according to the present invention.
  • the front end of the vehicle is largely divided into a pair of left and right front side members 10, 10, a radiator core support 20 joined to an upper end portion of the front side members 10, 10, a front side member 10,
  • a vehicle body is constituted of a bumper beam 30 attached to the front end portion of 10 and a bumper reinforcement 40 according to the present invention.
  • the front side members 10, 10, the radiator core support 20, the bumper beam 30, and the bumper reinforcement 40 according to the present invention, which are vehicle body members, will be described here, the front end portion of the vehicle is not shown.
  • a front fender is disposed at the vehicle outer side of the side members 10, 10, a hood is disposed above the radiator core support 20 and the bumper reinforcement 40, and covers the bumper beam 30 and the bumper reinforcement 40.
  • a bumper made of resin is provided.
  • the radiator core support 20 is a member mainly for supporting a radiator (not shown).
  • the front side members 10, 10 have flanges 14 formed at the ends of the front side members 12, 12, respectively, and the radiator core support 20 has an upper support member 22 and a pair of left and right side support members 24, 24. It consists of
  • the bumper beam 30 has a gap in front of the bumper beam member 32 and is covered by the bumper core 34.
  • the bumper beam 30 projects to the front of the vehicle at both left and right end portions of the bumper beam member 32 and collapses to absorb shocks.
  • the members 36, 36 are joined, and flanges 38 corresponding to the flanges 14 are formed at the rear ends of the crash members 36, 36, respectively.
  • the front end portion of the vehicle basically has the side support members 24, 24 joined to the upper surface of the front end portion of the front side member members 12, 12, and the flanges 14 of the respective front ends of the front side member members 12 are crash members. It is joined with the flange 38 of each rear end of 36 and 36, and is comprised.
  • the bumper reinforcement 40 comprises a pair of left and right side brackets 42, 42, stays 44, 44 consisting of a pair of elongated members, and a bumper reinforcement member (auxiliary member) 50.
  • the bumper reinforcement 40 is joined to the front end of the side brackets 42, 42 extending from the side support members 24, 24 to the front of the vehicle at both ends of the bumper reinforcement member 50 and near the central portion of the bumper reinforcement 50
  • the front ends of the pair of stays 44 are joined to the bumper reinforcement member 50 and the rear ends are joined to the upper support member 22 so as to connect the upper support member 22 with the upper support member 22.
  • FIG. 3 a cross-sectional view taken along the line BB of FIG. 1 is shown, but the bumper reinforcement member 50 has a hat-shaped cross section, and has a flat upper surface 52 and a flange 54 extending to the front of the vehicle. Have.
  • the bumper reinforcement 40 has a function of supporting the upper portion of the bumper fascia 60, and the upper portion of the bumper fascia 60 is a fastening member on the upper surface 52. It is fixed by
  • the bumper fascia 60 is provided at the front end of the vehicle such that the upper portion is fixed to the bumper reinforcement 40 and the lower portion is fixed to the lower surface of the bumper core 34 of the bumper beam 30, for example.
  • the bumper reinforcement 40 also has a function of protecting the pedestrian when the front end of the vehicle comes in contact with the pedestrian.
  • the bumper reinforcement member 50 of the bumper reinforcement 40 has a function of supporting the upper part of the leg of the pedestrian and preventing the fall of the upper body of the pedestrian to the rear of the vehicle.
  • the behavior of the leg 100 of the pedestrian when the leg 100 of the pedestrian is in contact with the front end of the vehicle is shown, but as shown in FIG.
  • the knee 102 contacts the bumper fascia 60 at the position of the bumper beam 30 substantially simultaneously, and the leg upper portion 104 contacts the bumper fascia 60 at the position of the bumper reinforcement member 50 (two-dot chain line).
  • the upper leg portion 104 comes in contact with the bumper reinforcement member 50 (solid line).
  • the upper leg 104 abuts against the bumper reinforcement member 50 in this manner, the upper body of the pedestrian hardly falls to the rear of the vehicle around the joint of the knee 102, and the front end of the vehicle comes into contact with the pedestrian. Even if it is, the damage to the pedestrian can be minimized, and the pedestrian protection can be improved.
  • the bumper reinforcement member 50 has a hat-like cross section, a certain degree of rigidity is secured, but since the lower surface is open, the bumper reinforcement member 50 is deformed when it comes in contact with a pedestrian and the impact force is Is absorbable. Further, since the pair of stays 44 and 44 are formed of elongated members, the impact force can be absorbed even by buckling of the stays 44 and 44, and the impact received by the pedestrian can be favorably mitigated. Furthermore, in the present embodiment, since the bumper reinforcement member 50 has the flange 54 extending forward of the vehicle, the impact force can also be absorbed by deformation when the flange 54 contacts the pedestrian. It is possible to further reduce the impact of the pedestrian. In this case, by setting the length of the flange 54 appropriately, it is possible to regulate the bending angle of the knee 102 of the pedestrian.
  • FIG. 5 a modification of the front end structure of the vehicle according to the present invention is shown in the same manner as FIG. 3, and as shown in the figure, a flange 54 'is used instead of the bumper reinforcement member 50.
  • a bumper reinforcement member 50 ' having a bead 56 extending along the flange 54' may be employed.
  • the bead 56 is formed on the flange 54 'in this manner, the flange 54' can be easily deformed when it comes in contact with the pedestrian to absorb the impact force, thereby further reducing the impact received by the pedestrian. be able to. Thereby, the pedestrian protection can be further improved.

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

Abstract

A bumper beam member (30) is attached to the tip ends of a left/right pair of front side members (10) so as to protrude towards the front of the vehicle, and an auxiliary member (50) is provided above the bumper beam member so as to protrude towards the front of the vehicle from an upper support member (22) of a radiator core support (20) and also to extend in the vehicle width direction.

Description

車両の前端部構造Front end structure of the vehicle
　本発明は、車両の前端部構造に係り、特に歩行者保護の向上を図る技術に関する。 The present invention relates to a front end structure of a vehicle, and more particularly to a technique for improving pedestrian protection.
　車両の前端部において、車両の骨格をなすべく鋼板を加工してなる車体部材は、一般には左右一対のサイドメンバ部材の先端部分にラジエータコアサポート部材を接合させるとともにバンパビーム部材を取り付けるようにして構成されている。
　このような車両の前端部は、歩行者との接触時において歩行者が受ける被害を最小限に留める必要があり、歩行者を保護する構造が種々開発されている。
　例えば、特許文献１には、車両の前端構造をラジエータコアサポート部材の一部であるアッパメンバに対してラジエータが変位可能に構成し、アッパメンバがラジエータと比較して優先的に変形するようにして歩行者を保護する手法が開示されている。 In a front end portion of a vehicle, a vehicle body member formed by processing a steel plate to form a framework of the vehicle is generally constructed such that a radiator core support member is joined to a tip portion of a pair of left and right side member members and a bumper beam member is attached. It is done.
Such a front end portion of a vehicle needs to minimize damage to the pedestrian when in contact with the pedestrian, and various structures for protecting the pedestrian have been developed.
For example, according to Patent Document 1, the front end structure of the vehicle is configured such that the radiator can be displaced with respect to the upper member which is a part of the radiator core support member, and the upper member is preferentially deformed in comparison with the radiator. Methods to protect persons are disclosed.
特開２００３－３３５２６３号公報JP 2003-335263
　近年、安全性向上の観点から、車両の前端部のデザインのさらなる改善が図られており、衝突時等に潰れるよう調整された衝撃吸収部材を介してバンパビーム部材をサイドメンバ部材の先端部分に取り付けた車両の前端部構造が開発されている。
　このような構造では、バンパビーム部材がラジエータコアサポート部材よりも大きく前方に突き出すこととなり、バンパビーム部材の高さ位置が歩行者の膝の高さ位置に略等しいため、バンパビーム部材が歩行者の膝に当たった場合、膝上部を支持する車体部材が無いため、歩行者の上体が膝の関節周りに大きく車両後方に倒れ込むおそれがあり、歩行者を十分に保護できず、好ましいことではない。
　本発明はこのような問題点を解決するためになされたもので、その目的とするところは、歩行者保護の向上を図ることの可能な車両の前端部構造を提供することにある。 In recent years, the design of the front end of the vehicle has been further improved from the viewpoint of safety improvement, and a bumper beam member is attached to the tip portion of the side member member via an impact absorbing member adjusted to collapse in a collision or the like. Front end structures of vehicles have been developed.
In such a structure, the bumper beam member protrudes forward more than the radiator core support member, and since the height position of the bumper beam member is substantially equal to the height position of the pedestrian's knee, the bumper beam member becomes the pedestrian's knee In the case of collision, there is a possibility that the upper body of the pedestrian may fall largely to the rear of the vehicle around the knee joint because there is no body member supporting the upper knee, which is not preferable because the pedestrian can not be sufficiently protected.
The present invention has been made to solve such problems, and an object of the present invention is to provide a front end structure of a vehicle capable of improving pedestrian protection.
　上記目的を達成するため、本発明の車両の前端部構造は、左右一対のフロントサイドメンバ部材の各先端部上面にラジエータコアサポート部材が接合されて渡されるとともに、該左右一対のフロントサイドメンバ部材の各先端にバンパビーム部材が取り付けられて渡された車両の前端部構造であって、前記ラジエータコアサポート部材は、車両上方に延びる左右一対のサイドサポート部材及びこれら一対のサイドサポート部材の上端を繋ぐアッパサポート部材とからなり、前記バンパビーム部材は、前記左右一対のフロントサイドメンバ部材の各先端に車両前方に突出するよう取り付けられており、前記バンパビーム部材の上方には、前記アッパサポート部材から車両前方に突出するとともに車幅方向に延びるようにして補助部材が設けられてなることを特徴とする（請求項１）。 In order to achieve the above object, according to the front end structure of the vehicle of the present invention, the radiator core support member is joined and passed to the upper surface of each front end of the pair of left and right front side members, and the pair of left and right front side members A front end structure of the vehicle in which a bumper beam member is attached to each end of the vehicle, and the radiator core support member is a pair of left and right side support members extending above the vehicle and an upper support connecting upper ends of the pair of side support members The bumper beam member is attached to a front end of the vehicle at each end of the pair of left and right front side member members so as to project forward from the upper support member above the bumper beam member. As well as extending in the vehicle width direction. Characterized by comprising Te (claim 1).
　好ましくは、前記補助部材は、車両前方に延びるフランジを有し、断面がハット状に形成されてなるのがよい（請求項２）。
　また、前記フランジには、該フランジに沿って延びるビードが形成されてなるのがよい（請求項３）。
　また、前記バンパビーム部材は、前記左右一対のフロントサイドメンバ部材の各先端に、車両前方に突出するよう設けられ、潰れることで衝撃を吸収するクラッシュ部材を介して取り付けられてなるのがよい（請求項４）。 Preferably, the auxiliary member has a flange extending to the front of the vehicle, and the cross section is formed in a hat shape (claim 2).
Further, the flange may be formed with a bead extending along the flange (claim 3).
Further, the bumper beam member may be provided at each end of the pair of left and right front side member members so as to protrude forward of the vehicle and be attached via a crash member that absorbs an impact by being crushed (claims) Item 4).
　本発明の車両の前端部構造によれば、バンパビーム部材の上方に、ラジエータコアサポート部材のアッパサポート部材から車両前方に突出し車幅方向に延びる補助部材を設けるようにしたので、歩行者の脚部が車両の前端部に接触した場合において、歩行者の脚上部が補助部材と当接することになり、歩行者の上体が膝の関節周りで車両後方に倒れ込むことが殆ど無くなる。
　従って、車両の前端部が歩行者と接触した場合であっても、歩行者が受ける被害を最小限に留めることができ、歩行者保護の向上を図ることができる（請求項１）。
　また、補助部材がハット状の断面を有していることで、補助部材としてある程度の剛性を確保しつつ、歩行者と接触した場合に変形して衝撃力を吸収可能であり、車両前方に延びるフランジを有していることで、フランジが歩行者と接触した場合に変形することによって衝撃力を吸収可能である（請求項２）。 According to the front end structure of the vehicle of the present invention, the auxiliary member which protrudes from the upper support member of the radiator core support member to the front of the vehicle and extends in the vehicle width direction is provided above the bumper beam member. When the front wheel contacts the front end of the vehicle, the upper part of the leg of the pedestrian comes in contact with the auxiliary member, and the upper body of the pedestrian hardly falls to the rear of the vehicle around the knee joint.
Therefore, even when the front end of the vehicle comes into contact with the pedestrian, the damage to the pedestrian can be minimized, and the pedestrian protection can be improved (claim 1).
In addition, the auxiliary member has a hat-like cross section, so that the auxiliary member can secure a certain degree of rigidity, and can deform when it contacts a pedestrian and can absorb impact force, and extends forward of the vehicle By having the flange, the impact force can be absorbed by deformation when the flange contacts the pedestrian (claim 2).
　また、フランジに沿ってビードが形成されていることで、フランジが歩行者と接触した場合において容易に変形して衝撃力を吸収可能である（請求項３）。
　また、バンパビーム部材は、左右一対のフロントサイドメンバ部材の各先端に車両前方に突出するクラッシュ部材を介して取り付けられているので、クラッシュ部材が車両前方に大きく突出している場合であっても、バンパビーム部材の上方に補助部材を設けることで、歩行者保護の向上を図ることができる（請求項４）。 In addition, by forming a bead along the flange, the flange can be easily deformed when it comes in contact with a pedestrian and can absorb impact force (claim 3).
In addition, since the bumper beam members are attached to the front ends of the pair of left and right front side member members via crush members projecting forward of the vehicle, even if the crush members largely project forward of the vehicle, the bumper beam By providing the auxiliary member above the members, the pedestrian protection can be improved (claim 4).
本発明に係る車両の前端部構造を示す斜視図である。1 is a perspective view showing a front end structure of a vehicle according to the present invention. 車両の前端部構造を図１の矢視Ａ方向から見た図である。It is the figure which looked at the front-end part structure of a vehicle from the arrow A direction of FIG. 図１のＢ－Ｂ線に沿う断面図である。FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1; 歩行者の脚部が車両の前端部に接触した場合の歩行者の脚部の挙動を示す図である。It is a figure which shows the behavior of a leg of a pedestrian when a leg of a pedestrian contacts a front end part of vehicles. 本発明に係る車両の前端部構造の変形例を示す図である。It is a figure which shows the modification of the front-end part structure of the vehicle which concerns on this invention.
　以下、図面に基づき本発明の実施形態について説明する。
　図１は本発明における車両の前端部構造の斜視図である。
　同図に示すように、車両の前端部は、大きくは、左右一対のフロントサイドメンバ１０、１０、フロントサイドメンバ１０、１０の先端部上部に接合されたラジエータコアサポート２０、フロントサイドメンバ１０、１０の先端部に取り付けられたバンパビーム３０及び本発明に係るバンパリーンフォース４０から車体が構成されている。
　なお、ここでは、車体部材であるフロントサイドメンバ１０、１０、ラジエータコアサポート２０、バンパビーム３０及び本発明に係るバンパリーンフォース４０についてのみ説明するが、車両の前端部には、図示しないものの、フロントサイドメンバ１０、１０の車両外側に位置してそれぞれフロントフェンダが配設され、ラジエータコアサポート２０及びバンパリーンフォース４０の上側に位置してフードが配設され、バンパビーム３０及びバンパリーンフォース４０を覆うようにして樹脂製のバンパフェイシアが設けられている。なお、ラジエータコアサポート２０は主として図示しないラジエータを支持するための部材である。 Hereinafter, embodiments of the present invention will be described based on the drawings.
FIG. 1 is a perspective view of a front end structure of a vehicle according to the present invention.
As shown in the figure, the front end of the vehicle is largely divided into a pair of left and right front side members 10, 10, a radiator core support 20 joined to an upper end portion of the front side members 10, 10, a front side member 10, A vehicle body is constituted of a bumper beam 30 attached to the front end portion of 10 and a bumper reinforcement 40 according to the present invention.
Although only the front side members 10, 10, the radiator core support 20, the bumper beam 30, and the bumper reinforcement 40 according to the present invention, which are vehicle body members, will be described here, the front end portion of the vehicle is not shown. A front fender is disposed at the vehicle outer side of the side members 10, 10, a hood is disposed above the radiator core support 20 and the bumper reinforcement 40, and covers the bumper beam 30 and the bumper reinforcement 40. Thus, a bumper made of resin is provided. The radiator core support 20 is a member mainly for supporting a radiator (not shown).
　詳しくは、フロントサイドメンバ１０、１０は、フロントサイドメンバ部材１２、１２の各先端にフランジ１４が形成されて構成され、ラジエータコアサポート２０は、アッパサポート部材２２と左右一対のサイドサポート部材２４、２４から構成されている。また、バンパビーム３０は、バンパビーム部材３２の車両前方が隙間を有してバンパコア３４で覆われるとともに、バンパビーム部材３２の左右両端部に、車両前方に突出し、潰れることで衝撃を吸収する左右一対のクラッシュ部材３６、３６が接合され、このクラッシュ部材３６、３６の各後端に上記フランジ１４に対応するフランジ３８がそれぞれ形成されて構成されている。
　そして、車両の前端部は、基本的に、フロントサイドメンバ部材１２、１２の先端部上面にサイドサポート部材２４、２４が接合され、フロントサイドメンバ部材１２、１２の各先端のフランジ１４がそれぞれクラッシュ部材３６、３６の各後端のフランジ３８と接合されて構成されている。 Specifically, the front side members 10, 10 have flanges 14 formed at the ends of the front side members 12, 12, respectively, and the radiator core support 20 has an upper support member 22 and a pair of left and right side support members 24, 24. It consists of The bumper beam 30 has a gap in front of the bumper beam member 32 and is covered by the bumper core 34. The bumper beam 30 projects to the front of the vehicle at both left and right end portions of the bumper beam member 32 and collapses to absorb shocks. The members 36, 36 are joined, and flanges 38 corresponding to the flanges 14 are formed at the rear ends of the crash members 36, 36, respectively.
The front end portion of the vehicle basically has the side support members 24, 24 joined to the upper surface of the front end portion of the front side member members 12, 12, and the flanges 14 of the respective front ends of the front side member members 12 are crash members. It is joined with the flange 38 of each rear end of 36 and 36, and is comprised.
　本発明に係るバンパリーンフォース４０は、左右一対のサイドブラケット４２、４２、一対の細長部材からなるステー４４、４４、バンパリーンフォース部材（補助部材）５０から構成されている。詳しくは、バンパリーンフォース４０は、バンパリーンフォース部材５０の両端がサイドサポート部材２４、２４から車両前方に延びるサイドブラケット４２、４２の先端部に接合されるとともに、バンパリーンフォース部材５０の中央部近傍とアッパサポート部材２２とを連結するように、一対のステー４４、４４の先端がバンパリーンフォース部材５０に接合され、後端がアッパサポート部材２２に接合されている。
　図３を参照すると、図１のＢ－Ｂ線に沿う断面図が示されているが、バンパリーンフォース部材５０は、断面がハット状をなし、平らな上面５２と車両前方に延びるフランジ５４を有している。 The bumper reinforcement 40 according to the present invention comprises a pair of left and right side brackets 42, 42, stays 44, 44 consisting of a pair of elongated members, and a bumper reinforcement member (auxiliary member) 50. Specifically, the bumper reinforcement 40 is joined to the front end of the side brackets 42, 42 extending from the side support members 24, 24 to the front of the vehicle at both ends of the bumper reinforcement member 50 and near the central portion of the bumper reinforcement 50 The front ends of the pair of stays 44 are joined to the bumper reinforcement member 50 and the rear ends are joined to the upper support member 22 so as to connect the upper support member 22 with the upper support member 22.
Referring to FIG. 3, a cross-sectional view taken along the line BB of FIG. 1 is shown, but the bumper reinforcement member 50 has a hat-shaped cross section, and has a flat upper surface 52 and a flange 54 extending to the front of the vehicle. Have.
　同図には、バンパフェイシア６０とフード７０とが合わせて示されているが、バンパリーンフォース４０はバンパフェイシア６０の上部を支持する機能を有し、バンパフェイシア６０の上部が上面５２に締結部材によって固定されている。これより、バンパフェイシア６０は、上部がバンパリーンフォース４０に固定され、下部が例えばバンパビーム３０のバンパコア３４の下面に締結部材によって固定されるようにして車両の前端部に設けられている。
　そして、バンパリーンフォース４０は、車両の前端部が歩行者と接触した場合に、歩行者を保護する機能をも有している。即ち、バンパビーム３０の高さ位置が歩行者の膝の高さ位置に略等しいため、バンパビーム３０が歩行者の膝に当たった場合、歩行者の上体が膝の関節周りに大きく車両後方に倒れ込むおそれがあるのであるが、バンパリーンフォース４０のバンパリーンフォース部材５０が、歩行者の脚上部を支え、かかる歩行者の上体の車両後方への倒れ込みを防止する機能を有している。 Although the bumper fascia 60 and the hood 70 are shown together in the figure, the bumper reinforcement 40 has a function of supporting the upper portion of the bumper fascia 60, and the upper portion of the bumper fascia 60 is a fastening member on the upper surface 52. It is fixed by Thus, the bumper fascia 60 is provided at the front end of the vehicle such that the upper portion is fixed to the bumper reinforcement 40 and the lower portion is fixed to the lower surface of the bumper core 34 of the bumper beam 30, for example.
And, the bumper reinforcement 40 also has a function of protecting the pedestrian when the front end of the vehicle comes in contact with the pedestrian. That is, since the height position of the bumper beam 30 is substantially equal to the height position of the pedestrian's knee, when the bumper beam 30 strikes the pedestrian's knee, the upper body of the pedestrian falls largely behind the vehicle around the knee joint. Although there is a possibility, the bumper reinforcement member 50 of the bumper reinforcement 40 has a function of supporting the upper part of the leg of the pedestrian and preventing the fall of the upper body of the pedestrian to the rear of the vehicle.
　図４を参照すると、図３に加え、歩行者の脚部１００が車両の前端部に接触した場合の歩行者の脚部１００の挙動が示されているが、同図に示すように、歩行者の脚部１００は、略同時に膝１０２がバンパビーム３０の位置でバンパフェイシア６０と接触するとともに、脚上部１０４がバンパリーンフォース部材５０の位置でバンパフェイシア６０と接触する（二点鎖線）。
　そして、車両が前方に走行している場合、歩行者の脚部１００がバンパフェイシア６０に接触した後、脚上部１０４はバンパリーンフォース部材５０と当接することになる（実線）。
　このように脚上部１０４がバンパリーンフォース部材５０と当接すると、歩行者の上体は膝１０２の関節周りに車両後方に倒れ込むことが殆ど無くなり、車両の前端部が歩行者と接触した場合であっても、歩行者が受ける被害を最小限に留めることができ、歩行者保護の向上を図ることができる。 Referring to FIG. 4, in addition to FIG. 3, the behavior of the leg 100 of the pedestrian when the leg 100 of the pedestrian is in contact with the front end of the vehicle is shown, but as shown in FIG. In the leg portion 100 of the person, the knee 102 contacts the bumper fascia 60 at the position of the bumper beam 30 substantially simultaneously, and the leg upper portion 104 contacts the bumper fascia 60 at the position of the bumper reinforcement member 50 (two-dot chain line).
Then, when the vehicle travels forward, after the leg portion 100 of the pedestrian comes in contact with the bumper fascia 60, the upper leg portion 104 comes in contact with the bumper reinforcement member 50 (solid line).
When the upper leg 104 abuts against the bumper reinforcement member 50 in this manner, the upper body of the pedestrian hardly falls to the rear of the vehicle around the joint of the knee 102, and the front end of the vehicle comes into contact with the pedestrian. Even if it is, the damage to the pedestrian can be minimized, and the pedestrian protection can be improved.
　特に、バンパリーンフォース部材５０は、ハット状の断面を有していることからある程度の剛性が確保されているが、下面が開放されているので、歩行者と接触した場合に変形して衝撃力を吸収可能である。また、一対のステー４４、４４は細長部材からなるので、ステー４４、４４が座屈することによっても衝撃力を吸収可能であり、歩行者の受ける衝撃を良好に緩和することができる。
　さらに、本実施形態では、バンパリーンフォース部材５０は車両前方に延びるフランジ５４を有していることから、フランジ５４が歩行者と接触した場合に変形することによっても衝撃力を吸収可能であり、歩行者の受ける衝撃をさらに緩和することができる。
　この場合において、フランジ５４の長さを適宜設定することにより、歩行者の膝１０２の曲げ角度を規制することが可能である。 In particular, although the bumper reinforcement member 50 has a hat-like cross section, a certain degree of rigidity is secured, but since the lower surface is open, the bumper reinforcement member 50 is deformed when it comes in contact with a pedestrian and the impact force is Is absorbable. Further, since the pair of stays 44 and 44 are formed of elongated members, the impact force can be absorbed even by buckling of the stays 44 and 44, and the impact received by the pedestrian can be favorably mitigated.
Furthermore, in the present embodiment, since the bumper reinforcement member 50 has the flange 54 extending forward of the vehicle, the impact force can also be absorbed by deformation when the flange 54 contacts the pedestrian. It is possible to further reduce the impact of the pedestrian.
In this case, by setting the length of the flange 54 appropriately, it is possible to regulate the bending angle of the knee 102 of the pedestrian.
　また、図５を参照すると、本発明に係る車両の前端部構造の変形例が図３と同様に示されており、同図に示すように、バンパリーンフォース部材５０に代えて、フランジ５４’に当該フランジ５４’に沿って延びるビード５６を形成したバンパリーンフォース部材５０’を採用するようにしてもよい。
　このようにフランジ５４’にビード５６が形成されていると、フランジ５４’が歩行者と接触した場合において容易に変形して衝撃力を吸収可能であり、歩行者の受ける衝撃をより一層緩和することができる。これにより、さらなる歩行者保護の向上を図ることができる。 Further, referring to FIG. 5, a modification of the front end structure of the vehicle according to the present invention is shown in the same manner as FIG. 3, and as shown in the figure, a flange 54 'is used instead of the bumper reinforcement member 50. Alternatively, a bumper reinforcement member 50 'having a bead 56 extending along the flange 54' may be employed.
When the bead 56 is formed on the flange 54 'in this manner, the flange 54' can be easily deformed when it comes in contact with the pedestrian to absorb the impact force, thereby further reducing the impact received by the pedestrian. be able to. Thereby, the pedestrian protection can be further improved.
　１０　フロントサイドメンバ
　２０　ラジエータコアサポート
　３０　バンパビーム
　４０　バンパリーンフォース
　４２　サイドブラケット
　４４　ステー
　５０、５０’　バンパリーンフォース部材（補助部材）
　５４、５４’　フランジ
　５６　ビード
　６０　バンパフェイシア
　７０　フード 10 front side member 20 radiator core support 30 bumper beam 40 bumper reinforcement 42 side bracket 44 stay 50, 50 'bumper reinforcement member (auxiliary member)
54, 54 'flange 56 bead 60 bumper facia 70 hood

Claims (4)

  1. 　左右一対のフロントサイドメンバ部材の各先端部上面にラジエータコアサポート部材が接合されて渡されるとともに、該左右一対のフロントサイドメンバ部材の各先端にバンパビーム部材が取り付けられて渡された車両の前端部構造であって、
    　前記ラジエータコアサポート部材は、車両上方に延びる左右一対のサイドサポート部材及びこれら一対のサイドサポート部材の上端を繋ぐアッパサポート部材とからなり、
    　前記バンパビーム部材は、前記左右一対のフロントサイドメンバ部材の各先端に車両前方に突出するよう取り付けられており、
    　前記バンパビーム部材の上方には、前記アッパサポート部材から車両前方に突出するとともに車幅方向に延びるようにして補助部材が設けられてなることを特徴とする。     A radiator core support member is joined and passed to the upper surface of each front end portion of the left and right front side member members, and a bumper beam member is attached and passed to each front end of the left and right front side member members The structure,
    The radiator core support member comprises a pair of left and right side support members extending upward of the vehicle and an upper support member connecting the upper ends of the pair of side support members.
    The bumper beam members are attached to the front ends of the pair of left and right front side member members so as to protrude forward of the vehicle.
    An auxiliary member is provided above the bumper beam member so as to project forward from the upper support member and to extend in the vehicle width direction.
  2. 　請求項１記載の車両の前端部構造であって、
    　前記補助部材は、車両前方に延びるフランジを有し、断面がハット状に形成されてなることを特徴とする。     The front end structure of a vehicle according to claim 1, wherein
    The auxiliary member has a flange extending forward of the vehicle, and has a hat-shaped cross section.
  3. 　請求項２記載の車両の前端部構造であって、
    　前記フランジには、該フランジに沿って延びるビードが形成されてなることを特徴とする。     The front end structure of a vehicle according to claim 2, wherein
    The flange is characterized in that a bead extending along the flange is formed.
  4. 　請求項１乃至３のいずれか記載の車両の前端部構造であって、
    　前記バンパビーム部材は、前記左右一対のフロントサイドメンバ部材の各先端に、車両前方に突出するよう設けられ、潰れることで衝撃を吸収するクラッシュ部材を介して取り付けられてなることを特徴とする。     The front end structure of a vehicle according to any one of claims 1 to 3, wherein
    The bumper beam member is provided at each end of the pair of left and right front side member members so as to protrude forward of the vehicle, and is attached via a crash member that absorbs an impact by being crushed.
PCT/JP2011/074789 2010-12-01 2011-10-27 Front end section construction of vehicle WO2012073621A1 (en)

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EP3176040A1 (en) * 2015-12-02 2017-06-07 Mitsubishi Jidosha Kogyo K.K. Vehicle front structure
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EP4159547A1 (en) * 2021-10-01 2023-04-05 Mazda Motor Corporation Front structure of vehicle

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