JP2010280268A - Front bumper for vehicle - Google Patents

Front bumper for vehicle Download PDF

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JP2010280268A
JP2010280268A JP2009134003A JP2009134003A JP2010280268A JP 2010280268 A JP2010280268 A JP 2010280268A JP 2009134003 A JP2009134003 A JP 2009134003A JP 2009134003 A JP2009134003 A JP 2009134003A JP 2010280268 A JP2010280268 A JP 2010280268A
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Prior art keywords
bumper
stopper
vehicle
bumper face
face
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Hiromi Uiji
広海 初治
Kei Nagasaka
圭 長坂
Yasuhiro Maeda
泰宏 前田
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Suzuki Motor Corp
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Suzuki Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a front bumper for a vehicle, allowing protection of a collision opposite party by making impact load in relation to the collision opposite part easy to be dispersed, reduction of the number of components and simplification of a structure. <P>SOLUTION: In this front bumper, an upper end of a lower side bumper face 3 is connected to a lower end of an upper side bumper face 2, and an upper side bumper member 4 and a lower side bumper member are arranged on a rear side of the lower side bumper face 3. A stopper 30 which is opposed to the upper side member 4 between the lower side bumper face 3 and the upper side bumper member 4 and is received by the upper side bumper member 4 to suppress the moving of the lower side bumper face 3 to the upper side bumper member 4 side when the impact load is applied to the lower side bumper face 3 is integrally provided at the lower end of the upper side bumper face 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、
下側バンパフェイスの上端部が上側バンパフェイスの下端部に連結されて構成される上下２分割構造の車両用のフロントバンパで、
前記下側バンパフェイスの裏側に上側バンパメンバと下側バンパメンバが配置されている車両用のフロントバンパに関する。 The present invention
A front bumper for a vehicle having an upper and lower split structure constituted by connecting the upper end of the lower bumper face to the lower end of the upper bumper face,
The present invention relates to a vehicle front bumper in which an upper bumper member and a lower bumper member are disposed on the back side of the lower bumper face.

上記の上下２分割構造の車両用のフロントバンパは、成形性の向上を図る等の目的で大型のバンパとなる車両に採用されている（特許文献１参照）。また、バンパフェイスの裏側には上側バンパメンバと下側バンパメンバが配置されて、前方からの荷重を受け止める。そして、前記下側バンパメンバは衝突時に衝突相手が車両の下側に潜り込むのを阻止する機能を有しており、バンパフェイスの後方に接近配置され、衝突相手によって押されて車両後方側に移動するバンパフェイスおよび衝突相手からの荷重を早期に受け止めて、衝突相手が車両後方側（車両の内方側）へ移動することを抑制する。   The above-described front bumper for a vehicle having a vertically divided structure is employed in a vehicle that becomes a large bumper for the purpose of improving the moldability (see Patent Document 1). In addition, an upper bumper member and a lower bumper member are disposed on the back side of the bumper face to receive a load from the front. The lower bumper member has a function of preventing the collision partner from entering the lower side of the vehicle at the time of a collision, is disposed close to the rear of the bumper face, and is pushed by the collision partner to move to the vehicle rear side. The load from the bumper face and the collision partner is received at an early stage, and the collision partner is prevented from moving to the vehicle rear side (inward side of the vehicle).

このように衝突相手は下側バンパメンバによって車両後方側への移動を抑制されるが、上側バンパメンバは車両の前後方向で下側バンパメンバよりも車両の後方側に配置されるので、上側バンパメンバの前方のバンパフェイス部分に衝突した衝突相手の一部分と、下側バンパメンバの前方のバンパフェイス部分に衝突した衝突相手の一部分との車両後方側への移動量の差が大きくなり過ぎる構造となる。そして、この構造では、衝突相手に対する衝撃荷重を分散させにくいという問題があり、衝撃荷重を効果的に吸収させることができなかった。   In this way, the collision partner is restrained from moving rearward by the lower bumper member, but the upper bumper member is arranged on the rear side of the vehicle relative to the lower bumper member in the front-rear direction of the vehicle. The difference in the amount of movement of the collision partner that collided with the bumper face part and the collision partner part that collided with the bumper face part ahead of the lower bumper member becomes too large. This structure has a problem that it is difficult to disperse the impact load on the collision partner, and the impact load cannot be effectively absorbed.

そこで、従来、下側バンパフェイスと上側バンパメンバの間にこれらとは別体のアブソーバを配置し、アブソーバで衝撃荷重を吸収するとともに前記移動量の差を小さくして上記の問題を解消していた。   Therefore, conventionally, an absorber separate from these is disposed between the lower bumper face and the upper bumper member to absorb the impact load by the absorber and reduce the difference in the amount of movement to solve the above problem. .

特開２００６−５１８４８号公報JP 2006-51848 A

しかしながら、上記従来の構造によれば、下側バンパフェイスと上側バンパメンバの間にこれらとは別体のアブソーバを配置していたために、部品点数が増大して構造が複雑化していた。
本発明の目的は、衝突相手に対する衝撃荷重を分散させやすくして衝突相手を保護することができ、部品点数を削減でき、構造を簡素化することができる車両用のフロントバンパを提供する点にある。 However, according to the conventional structure described above, since the separate absorber is disposed between the lower bumper face and the upper bumper member, the number of parts is increased and the structure is complicated.
An object of the present invention is to provide a vehicle front bumper that can easily disperse an impact load on a collision partner, protect the collision partner, reduce the number of parts, and simplify the structure. is there.

本発明の特徴は、
下側バンパフェイスの上端部が上側バンパフェイスの下端部に連結され、
前記下側バンパフェイスの裏側に上側バンパメンバと下側バンパメンバが配置されている車両用のフロントバンパであって、
前記下側バンパフェイスと上側バンパメンバの間で前記上側バンパメンバに対向し、前記下側バンパフェイスに衝撃荷重が加わると、前記上側バンパメンバに受け止められて前記下側バンパフェイスの前記上側バンパメンバ側への移動を抑制するストッパが前記上側バンパフェイスの下端部に一体に設けられている点にある。（請求項１） The feature of the present invention is that
The upper end of the lower bumper face is connected to the lower end of the upper bumper face,
A front bumper for a vehicle in which an upper bumper member and a lower bumper member are arranged on the back side of the lower bumper face,
The upper bumper member is opposed to the upper bumper member between the lower bumper face and the upper bumper member, and when an impact load is applied to the lower bumper face, the upper bumper member is received and the lower bumper face moves toward the upper bumper member. The stopper which suppresses is in the point integrally provided in the lower end part of the said upper bumper face. (Claim 1)

上記の構成によれば、下側バンパフェイスに衝撃荷重が加わると、前記ストッパが上側バンパメンバに受け止められて下側バンパフェイスの上側バンパメンバ側への移動を抑制する。
これにより、上側バンパメンバの車両前方側の下側バンパフェイス部分に衝突した衝突相手の一部分と、下側バンパメンバの車両前方側の下側バンパフェイス部分に衝突した衝突相手の一部分との車両後方側への移動量の差が大きくなり過ぎることを防止できて、衝突相手に対する衝撃荷重を分散させやすくすることができる。
また、前記ストッパは上側バンパフェイスの下端部に一体に設けられているから、部品点数を削減して構造を簡素化し、組み付け作業性を向上させることができる。 According to the above configuration, when an impact load is applied to the lower bumper face, the stopper is received by the upper bumper member and the movement of the lower bumper face toward the upper bumper member is suppressed.
Accordingly, a part of the collision partner colliding with the lower bumper face part of the upper bumper member on the vehicle front side and a part of the collision partner colliding with the lower bumper face part of the lower bumper member on the vehicle front side are moved to the vehicle rear side. It is possible to prevent the difference in the amount of movement from becoming too large, and to easily disperse the impact load on the collision partner.
Further, since the stopper is integrally provided at the lower end portion of the upper bumper face, the number of parts can be reduced, the structure can be simplified, and the assembly workability can be improved.

本発明において、
前記上側バンパメンバに受け止められた前記ストッパは潰れながら前記下側バンパフェイスの前記上側バンパメンバ側への移動を抑制すると、次の作用を奏することができる。（請求項２） In the present invention,
If the movement of the lower bumper face to the upper bumper member side is suppressed while the stopper received by the upper bumper member is crushed, the following action can be achieved. (Claim 2)

ストッパが上側バンパメンバに受け止められて潰れることで衝撃荷重を吸収することができ、衝突相手を保護しやすくすることができる。（請求項２）   When the stopper is received by the upper bumper member and crushed, the impact load can be absorbed and the collision partner can be easily protected. (Claim 2)

本発明において、
前記ストッパは車幅方向に沿う板状に形成されて、前記上側バンパメンバ側ほど下方に位置する状態に傾斜していると、ストッパの傾斜角の大きさや縦断面におけるストッパの長さによりストッパの性能（衝撃荷重を分散させる性能）を決定することができ、変形が安定して、ストッパの性能を所望の性能に設定しやすくすることができる。（請求項３） In the present invention,
When the stopper is formed in a plate shape along the vehicle width direction and is inclined so as to be positioned downward as the upper bumper member side, the stopper performance depends on the inclination angle of the stopper and the length of the stopper in the longitudinal section. (Performance to disperse the impact load) can be determined, the deformation is stable, and the performance of the stopper can be easily set to a desired performance. (Claim 3)

本発明において、
縦断面において、前記ストッパの下端部が前記上側バンパメンバの前面にほぼ沿うように折曲していると、上側バンパメンバに対するストッパの当接面積を大きくすることができて、上側バンパメンバがストッパを受け止めやすくすることができる。（請求項４） In the present invention,
In the longitudinal section, when the lower end of the stopper is bent so as to be substantially along the front surface of the upper bumper member, the contact area of the stopper with the upper bumper member can be increased, and the upper bumper member can easily receive the stopper. can do. (Claim 4)

本発明において、
前記下側バンパフェイスの上端部に車両後方側に突出する取り付けフランジが折曲形成され、
前記上側バンパフェイスの下端部に車両前方側に開放した断面コの字状の係合凹部が形成されて、前記取り付けフランジが前記係合凹部に車両前方側から挿入係合されるよう構成され、
前記係合凹部の下壁と前記ストッパの間に縦リブが架設されていると、次の作用を奏することができる。（請求項５） In the present invention,
A mounting flange protruding to the vehicle rear side is bent at the upper end of the lower bumper face,
An engagement recess having a U-shaped cross-section opened to the vehicle front side is formed at the lower end of the upper bumper face, and the mounting flange is configured to be inserted and engaged with the engagement recess from the vehicle front side.
When a vertical rib is provided between the lower wall of the engaging recess and the stopper, the following action can be achieved. (Claim 5)

前記取り付けフランジが前記係合凹部に車両前方側から挿入係合されることで、上側バンパフェイスと下側バンパフェイスを確実に位置決めすることができる。
そして、リブの厚さや数量によりストッパの性能（衝撃荷重を分散させる性能）を決定することができ、ストッパの性能を所望の性能に設定しやすくすることができる。（請求項５） Since the mounting flange is inserted and engaged with the engaging recess from the front side of the vehicle, the upper bumper face and the lower bumper face can be positioned reliably.
And the performance (performance which disperses an impact load) of a stopper can be determined by the thickness and quantity of a rib, and it can make it easy to set the performance of a stopper to desired performance. (Claim 5)

本発明において、
前記ストッパは前記上側バンパフェイスの下端部の車幅方向の中央部に車幅方向に長く形成されていると、次の作用を奏することができる。（請求項６） In the present invention,
If the stopper is formed long in the vehicle width direction at the center in the vehicle width direction at the lower end of the upper bumper face, the following effects can be achieved. (Claim 6)

上側バンパフェイスの車幅方向の中央部は前方側に向く面となっており、車幅方向の両端部のように平面視で円弧状に折曲形成された傾斜面となっていないことから、前記中央部に衝突した衝突相手に加わる衝撃荷重が逃げにくい。本発明の上記構成によれば、このように衝撃荷重が逃げにくい上側バンパフェイスの車幅方向の中央部にストッパを配置しているので、衝突した衝突相手を前記ストッパの性能（衝撃荷重を分散させる性能）によって保護しやすくすることができるとともに、衝撃荷重の吸収性能を確実に発揮できる。（請求項６）   The central part in the vehicle width direction of the upper bumper face is a surface facing the front side, and it is not an inclined surface that is bent in an arc shape in plan view like both ends in the vehicle width direction. The impact load applied to the collision partner colliding with the central portion is difficult to escape. According to the above configuration of the present invention, since the stopper is arranged at the center in the vehicle width direction of the upper bumper face where the impact load is difficult to escape, the collision performance of the stopper (the impact load is distributed) Performance), it can be easily protected, and the impact load absorption performance can be reliably exhibited. (Claim 6)

本発明によれば、
衝突相手に対する衝撃荷重を分散させやすくして衝突相手を保護することができ、部品点数を削減でき、構造を簡素化することができる車両用のフロントバンパを提供することができた。 According to the present invention,
It was possible to provide a front bumper for a vehicle that can easily disperse the impact load on the collision partner, protect the collision partner, reduce the number of parts, and simplify the structure.

自動車の前部構造の斜視図Perspective view of the front structure of an automobile 上側バンパフェイスと上側バンパメンバと下側バンパメンバを示す分解斜視図Exploded perspective view showing upper bumper face, upper bumper member, and lower bumper member 上側バンパメンバと下側バンパメンバと下側バンパフェイスを示す分解斜視図Exploded perspective view showing upper bumper member, lower bumper member, and lower bumper face 上側バンパフェイスを裏側から見た図（背面図）View of the upper bumper face from the back side (rear view) 図２のＡ−Ａ断面図（下側バンパフェイス、上側バンパメンバを含む）AA sectional view of FIG. 2 (including lower bumper face and upper bumper member) 衝突時のストッパの作用を示す縦断面図Longitudinal section showing the action of the stopper at the time of collision ストッパの性能（衝撃荷重を分散させる性能）を説明するための縦断面図Longitudinal sectional view for explaining stopper performance (performance to disperse impact load) 図２のＢ−Ｂ断面図（下側バンパフェイス、上側バンパメンバ、下側バンパメンバを含む）BB sectional view of FIG. 2 (including lower bumper face, upper bumper member, lower bumper member)

以下、本発明の実施の形態を図面に基づいて説明する。図１〜図３，図５，図８に自動車のフロントバンパ１を示してある。このフロントバンパ１は互いに別体で製造される上側バンパフェイス２と下側バンパフェイス３を備え、下側バンパフェイス３の上端部が上側バンパフェイス２の下端部に連結されている。そして、下側バンパフェイス３の裏側に車幅方向に長い上側バンパメンバ４と下側バンパメンバ５が配置されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3, 5, and 8 show a front bumper 1 of an automobile. The front bumper 1 includes an upper bumper face 2 and a lower bumper face 3 which are manufactured separately, and an upper end portion of the lower bumper face 3 is connected to a lower end portion of the upper bumper face 2. An upper bumper member 4 and a lower bumper member 5 that are long in the vehicle width direction are arranged on the back side of the lower bumper face 3.

下側バンパフェイス３と上側バンパフェイス２は樹脂で成形されている。また、下側バンパフェイス３と上側バンパフェイス２の車幅方向の両端部（左右両端部）が車両後方側Ｒｒに折曲し、上側バンパフェイス２が下側バンパフェイス３に対して上側ほど車両後方側Ｒｒに位置するように傾斜している。   The lower bumper face 3 and the upper bumper face 2 are formed of resin. Further, both end portions (left and right end portions) of the lower bumper face 3 and the upper bumper face 2 in the vehicle width direction are bent toward the vehicle rear side Rr, and the upper bumper face 2 is closer to the lower bumper face 3 toward the upper side. It inclines so that it may be located in back side Rr.

[下側バンパフェイス３の構造]
図１，図３に示すように、下側バンパフェイス３の車幅方向の中央部に長方形状の下側外気導入用開口６が形成され、この下側外気導入用開口６に格子状の下側グリル８が取り付けられている。下側外気導入用開口６の上方に位置する第１下側バンパフェイス部分１０は上方に台形状に突出している。そして、第１下側バンパフェイス部分１０は、後述する上側バンパメンバ４、第１ストッパ３０および第２ストッパ３１の前方に配置され、これらを覆い隠している。下側バンパフェイス３の下側外気導入用開口６の両側にフォグランプ取り付け用孔１１が形成されている。 [Structure of lower bumper face 3]
As shown in FIGS. 1 and 3, a rectangular lower outside air introduction opening 6 is formed at the center of the lower bumper face 3 in the vehicle width direction, and the lower outside air introduction opening 6 has a grid-like bottom. A side grille 8 is attached. The first lower bumper face portion 10 located above the lower outside air introduction opening 6 protrudes upward in a trapezoidal shape. The first lower bumper face portion 10 is disposed in front of an upper bumper member 4, a first stopper 30, and a second stopper 31, which will be described later, and covers them. Fog lamp mounting holes 11 are formed on both sides of the lower outside air introduction opening 6 of the lower bumper face 3.

図３，図５，図６，図８に示すように、下側バンパフェイス３の上端部がほぼ全長にわたって車両後方側Ｒｒに折曲して、車両後方側Ｒｒに突出する第１取り付けフランジ１２に構成され、前記下側外気導入用開口６の周縁部が車両後方側Ｒｒに折曲している。これにより、前記第１下側バンパフェイス部分１０が車両後方側Ｒｒに開放の縦断面コの字状に形成されている。第１取り付けフランジ１２には車両後方側Ｒｒに突出する複数の突出片１３が、第１取り付けフランジ１２の長手方向に間隔を空けて形成されている。   As shown in FIGS. 3, 5, 6, and 8, the first mounting flange 12 that protrudes toward the vehicle rear side Rr is formed by bending the upper end portion of the lower bumper face 3 over the entire length to the vehicle rear side Rr. The periphery of the lower outside air introduction opening 6 is bent to the vehicle rear side Rr. As a result, the first lower bumper face portion 10 is formed in a U-shape that is open at the vehicle rear side Rr. A plurality of projecting pieces 13 projecting toward the vehicle rear side Rr are formed on the first mounting flange 12 at intervals in the longitudinal direction of the first mounting flange 12.

下側バンパフェイス３の下端部はほぼ全長にわたって車両後方側Ｒｒに折曲している。そして、図８に示すように、下側外気導入用開口６の下方に位置する第２下側バンパフェイス部分４３の下端部の車両後方側Ｒｒへの突出長さが、下側外気導入用開口６の周縁部の車両後方側Ｒｒへの突出長さよりも長く設定されて、第２下側バンパフェイス部分４３が車両後方側Ｒｒに開放の縦断面Ｊ字状に形成されている。   The lower end of the lower bumper face 3 is bent to the vehicle rear side Rr over almost the entire length. And as shown in FIG. 8, the protrusion length to the vehicle rear side Rr of the lower end part of the 2nd lower bumper face part 43 located in the downward direction of the lower outside air introduction opening 6 is the lower outside air introduction opening. 6, the second lower bumper face portion 43 is formed in a J-shaped longitudinal section that is open to the vehicle rear side Rr.

[上側バンパフェイス２の構造]
図１，図２に示すように、上側バンパフェイス２の車幅方向の中央部に長方形状の上側外気導入用開口７が形成され、上側外気導入用開口７に上側グリル９が取り付けられている。上側バンパフェイス２の上側外気導入用開口７の両側にはヘッドランプ取り付け用の上側開放の切り欠き１４が形成されている。また、上側外気導入用開口７の車幅方向の中央部に縦壁１５が架設され、この縦壁１５と上側外気導入用開口７の周部に前記上側グリル９がスクリューで取り付けられている。上側バンパフェイス２の下端部の車幅方向の中央部は上方に台形状に凹む凹み部１６に構成されている。 [Structure of upper bumper face 2]
As shown in FIGS. 1 and 2, a rectangular upper outside air introduction opening 7 is formed at the center of the upper bumper face 2 in the vehicle width direction, and an upper grill 9 is attached to the upper outside air introduction opening 7. . On the both sides of the upper outside air introduction opening 7 of the upper bumper face 2, an upper open notch 14 for mounting a headlamp is formed. In addition, a vertical wall 15 is installed at the center of the upper outside air introduction opening 7 in the vehicle width direction, and the upper grill 9 is attached to the periphery of the vertical wall 15 and the upper outside air introduction opening 7 with screws. A central portion of the lower end portion of the upper bumper face 2 in the vehicle width direction is configured as a recessed portion 16 that is recessed upward in a trapezoidal shape.

そして、図４，図５に示すように、上側バンパフェイス２の下端部にほぼ全長にわたって車両前方側Ｆｒに開放した断面コの字状の係合凹部１７が形成され、係合凹部１７の底壁１７Ｔ（縦壁）に複数の長方形状の係合孔１８が形成されている。前記係合凹部１７には、下側バンパフェイス３の上端部の第１取り付けフランジ１２が車両前方側Ｆｒから挿入係合され、さらに、前記突出片１３が前記係合孔１８に挿入係合される。また、凹み部１６には、下側バンパフェイス３の前記第１下側バンパフェイス部分１０が合致して、一体的なフロントバンパフェイスが構成される。なお、符号６０はエンブレムである。さらに、上側バンパフェイス２には歩行者を保護するための後述の歩行者保護構造を設けてある。   As shown in FIGS. 4 and 5, an engagement concave portion 17 having a U-shaped cross section that is open to the vehicle front side Fr is formed at the lower end portion of the upper bumper face 2 over substantially the entire length, and the bottom of the engagement concave portion 17 is formed. A plurality of rectangular engagement holes 18 are formed in the wall 17T (vertical wall). In the engaging recess 17, the first mounting flange 12 at the upper end of the lower bumper face 3 is inserted and engaged from the vehicle front side Fr, and the protruding piece 13 is inserted and engaged in the engaging hole 18. The In addition, the first lower bumper face portion 10 of the lower bumper face 3 is matched with the recessed portion 16 to form an integrated front bumper face. Reference numeral 60 denotes an emblem. Further, the upper bumper face 2 is provided with a pedestrian protection structure to be described later for protecting the pedestrian.

［上側バンパメンバ４の構造］
図２，図３，図５に示すように、上側バンパメンバ４は、車両後方側Ｒｒが開放した断面コの字状のバンパメンバ本体部１９と、バンパメンバ本体部１９とともに閉じ断面を形成するようにバンパメンバ本体部１９の車両後方側Ｒｒの内面に溶接接合され、車両後方側Ｒｒが開放した断面ハット形状（上下両端部が車両後方側Ｒｒに折曲したハット形状）の補強部材２０とから成り、平面視で車両前方側Ｆｒに凸に緩やかに湾曲している。 [Structure of upper bumper member 4]
As shown in FIGS. 2, 3, and 5, the upper bumper member 4 includes a bumper member main body 19 having a U-shaped cross-section with the vehicle rear side Rr open, and a bumper member so as to form a closed cross section together with the bumper member main body 19. It consists of a reinforcing member 20 that is welded and joined to the inner surface of the vehicle body rear side Rr of the main body 19 and has a cross-sectional hat shape (hat shape in which both upper and lower ends are bent to the vehicle rear side Rr). It is gently curved convexly toward the vehicle front side Fr.

上側バンパメンバ４の車幅方向の端部は、車両前後方向に沿うエプロンサイドメンバ（図示せず）の前端部に角筒状の連結体２１を介して連結されている。連結体２１の車両後方側Ｒｒの端部には縦に長い長方形状の第２取り付けフランジ２２がそれぞれ溶接接合されている。   An end portion of the upper bumper member 4 in the vehicle width direction is connected to a front end portion of an apron side member (not shown) along the vehicle front-rear direction via a rectangular tube-like connecting body 21. A vertically long rectangular second attachment flange 22 is welded to the end of the connecting body 21 on the vehicle rear side Rr.

そして、左側の第２取り付けフランジ２２の上端部が、ラジエータサポートメンバ２３の車幅方向に沿うメンバ部分２４の左端部にＬ字形の第１ブラケット２５を介して連結され、右側の第２取り付けフランジ２２の上端部が前記メンバ部分２４の右端部に連結され、上側バンパメンバ４の上壁４Ｊの車幅方向の中央部が前記メンバ部分２４の車幅方向の中央部に第２ブラケット２６を介して連結されている。   Then, the upper end portion of the left second mounting flange 22 is connected to the left end portion of the member portion 24 along the vehicle width direction of the radiator support member 23 via the L-shaped first bracket 25, and the right second mounting flange. 22 is connected to the right end portion of the member portion 24, and the center portion in the vehicle width direction of the upper wall 4J of the upper bumper member 4 is connected to the center portion in the vehicle width direction of the member portion 24 via the second bracket 26. It is connected.

上側バンパメンバ４は、前記第１下側バンパフェイス部分１０とほぼ同一の高さ寸法に設定され、前記第１下側バンパフェイス部分１０と車両の上下方向でほぼ同一位置に位置している。また、上側バンパフェイス２の凹み部１６の側方に位置する下端部と車両の上下方向でほぼ同一位置に位置している。   The upper bumper member 4 is set to have substantially the same height as that of the first lower bumper face portion 10 and is located at substantially the same position as the first lower bumper face portion 10 in the vertical direction of the vehicle. Moreover, it is located in the substantially the same position in the up-down direction of a vehicle and the lower end part located in the side of the recessed part 16 of the upper bumper face 2. FIG.

［下側バンパメンバ５の構造］
図２，図３，図８に示すように、下側バンパメンバ５は、車両後方側Ｒｒが開放した断面Ｖ字状のバンパメンバ本体部２７と、バンパメンバ本体部２７の内面間に配置された複数のパイプ部材２８とから成り、平面視で車両前方側に凸に緩やかに湾曲している。下側バンパメンバ５は第２下側バンパフェイス部分４３の内側（裏側）に位置し、衝突時に歩行者等の衝突相手が車両の下側に潜り込むのを阻止する。 [Structure of lower bumper member 5]
As shown in FIGS. 2, 3, and 8, the lower bumper member 5 includes a plurality of bumper member main bodies 27 having a V-shaped cross section with the vehicle rear side Rr open and an inner surface of the bumper member main body 27. It consists of a pipe member 28 and is gently curved convexly toward the front side of the vehicle in plan view. The lower bumper member 5 is located on the inner side (back side) of the second lower bumper face portion 43 and prevents a collision partner such as a pedestrian from entering the lower side of the vehicle at the time of a collision.

［歩行者保護構造］
図２，図４，図５，図６に示すように、前記下側バンパフェイス３と上側バンパメンバ４の前面４Ｍ（バンパメンバ本体部１９の前面）との間で上側バンパメンバ４の前面４Ｍに対向し、下側バンパフェイス３に衝撃荷重が加わると、上側バンパメンバ４に受け止められて下側バンパフェイス３の上側バンパメンバ４側への所定長さを越える移動を抑制する第１ストッパ３０（ストッパに相当）が、上側バンパフェイス２の下端部の車幅方向中央部に一体に設けられている。つまり、上側バンパフェイス２の下端部から下側バンパフェイス３の裏側に突出し、下側バンパフェイス３の裏側と上側バンパメンバ４の前面４Ｍとの間に入り込み、後方に移動する下側バンパフェイス３に当接して受け止める第１ストッパ３０を一体に設けている。 [Pedestrian protection structure]
As shown in FIGS. 2, 4, 5 and 6, the lower bumper face 3 faces the front surface 4M of the upper bumper member 4 between the lower bumper face 3 and the front surface 4M of the upper bumper member 4 (front surface of the bumper member main body 19). When an impact load is applied to the lower bumper face 3, a first stopper 30 (corresponding to a stopper) is received by the upper bumper member 4 and restrains the lower bumper face 3 from moving beyond the predetermined length toward the upper bumper member 4. However, it is integrally provided in the vehicle width direction center part of the lower end part of the upper bumper face 2. That is, the lower bumper face 3 protrudes from the lower end portion of the upper bumper face 2 to the back side of the lower bumper face 3, enters between the back side of the lower bumper face 3 and the front face 4M of the upper bumper member 4, and moves downward. A first stopper 30 that abuts and receives is integrally provided.

上側バンパフェイス２の凹み部１６に突出した状態で設けられる前記第１ストッパ３０は車幅方向に長い板状に形成され、第１ストッパ３０の車幅方向の長さは、上側バンパフェイス２の凹み部１６の上辺のほぼ１／２に設定されている。また、車両前方視における第１ストッパ３０の上下方向の長さは、前記凹み部１６の上下方向の長さのほぼ１／２に設定されている。凹み部１６に突出した状態で設けられるので、製造型の構成が簡単となり、製造が容易で成形性が向上する。   The first stopper 30 provided in a state of projecting into the recess 16 of the upper bumper face 2 is formed in a plate shape that is long in the vehicle width direction, and the length of the first stopper 30 in the vehicle width direction is that of the upper bumper face 2. It is set to approximately ½ of the upper side of the recess 16. The length of the first stopper 30 in the vertical direction when viewed from the front of the vehicle is set to approximately ½ of the vertical length of the recess 16. Since it is provided in a state in which it protrudes into the recess 16, the construction of the production mold is simplified, the production is easy and the moldability is improved.

この第１ストッパ３０は車両の前後方向で上側バンパメンバ４側ほど下方に位置する状態に傾斜し、縦断面において、第１ストッパ３０の下端部３０Ｋが上側バンパメンバ４の前面４Ｍにほぼ沿うように下方に折曲して前面４Ｍとの当接部を構成し、確実な当接と当接部の補強をしている。また、前記係合凹部１７の下壁２９と前記第１ストッパ３０の間に複数の縦リブ３２が車幅方向に間隔を空けて架設されている。
複数の縦リブ３２のうちの一対の縦リブ３２は第１ストッパ３０の車幅方向の両端部側に位置して、第１ストッパ３０の上端側から下端側にわたって形成されている（図４参照）。第１ストッパ３０の車幅方向中間部に位置する残りの複数の縦リブ３２は、前記一対の縦リブ３２よりも短く設定されている。この構造により第１ストッパ３０の剛性を強くすることができる。 The first stopper 30 is inclined so as to be positioned downward toward the upper bumper member 4 in the front-rear direction of the vehicle. In the longitudinal section, the lower end portion 30K of the first stopper 30 is substantially lowered along the front surface 4M of the upper bumper member 4. The contact portion with the front surface 4M is formed by bending the contact portion 4a, and the contact portion and the contact portion are reinforced. A plurality of vertical ribs 32 are installed between the lower wall 29 of the engagement recess 17 and the first stopper 30 at intervals in the vehicle width direction.
A pair of vertical ribs 32 of the plurality of vertical ribs 32 are located on both ends in the vehicle width direction of the first stopper 30 and are formed from the upper end side to the lower end side of the first stopper 30 (see FIG. 4). ). The remaining plurality of vertical ribs 32 positioned in the vehicle width direction intermediate portion of the first stopper 30 are set shorter than the pair of vertical ribs 32. With this structure, the rigidity of the first stopper 30 can be increased.

図２，図４，図８に示すように、上側バンパフェイス２の凹み部１６の左右一対の傾斜辺１６Ｋと傾斜辺１６Ｋに連続する上辺の一部分１６Ｌとから下方に延び、下側バンパフェイス３と上側バンパメンバ４の前面４Ｍとの間で上側バンパメンバ４の前面４Ｍに対向する左右一対の第２ストッパ３１が上側バンパフェイス２の下端部に設けられている。つまり、上側バンパフェイス２の下端部から凹み部１６に突出した状態で下側バンパフェイス３の裏側に突出し、下側バンパフェイス３の裏側と上側バンパメンバ４の前面４Ｍとの間に入り込み、後方に移動する下側バンパフェイス３に当接して受け止める第２ストッパ３１を一体に凹み部１６に設けている。第２ストッパ３１の下端は前記凹み部１６の車幅方向両側の上側バンパフェイス２の下端とほぼ同一位置に位置する。この為、第１ストッパ３０の高さ寸法よりも第２ストッパ３１の高さ寸法が長く設定されて、第２ストッパ３１が第１ストッパ３０よりも下方まで延びている。   As shown in FIGS. 2, 4, and 8, the lower bumper face 3 extends downward from a pair of left and right inclined sides 16 </ b> K of the recessed portion 16 of the upper bumper face 2 and a portion 16 </ b> L of the upper side continuous with the inclined side 16 </ b> K. A pair of left and right second stoppers 31 facing the front surface 4M of the upper bumper member 4 is provided at the lower end portion of the upper bumper face 2 between the upper bumper member 4 and the front surface 4M of the upper bumper member 4. That is, it protrudes to the back side of the lower bumper face 3 in a state of protruding from the lower end portion of the upper bumper face 2 to the recessed portion 16, enters between the back side of the lower bumper face 3 and the front surface 4M of the upper bumper member 4, and A second stopper 31 is provided in the recessed portion 16 integrally with the lower bumper face 3 that moves and contacts the lower bumper face 3. The lower end of the second stopper 31 is located at substantially the same position as the lower end of the upper bumper face 2 on both sides in the vehicle width direction of the recess 16. For this reason, the height dimension of the second stopper 31 is set to be longer than the height dimension of the first stopper 30, and the second stopper 31 extends below the first stopper 30.

そして、下側バンパフェイス３に衝撃荷重が加わって下側バンパフェイス３が車両の後方側（上側バンパメンバ４側）に移動すると、第２ストッパ３１が上側バンパメンバ４側に移動し、上側バンパメンバ４が第２ストッパ３１の後述のフランジ３３を受け止めて下側バンパフェイス３の上側バンパメンバ４側への所定長さを越える移動を抑制するよう構成されている。   When an impact load is applied to the lower bumper face 3 and the lower bumper face 3 moves to the rear side of the vehicle (upper bumper member 4 side), the second stopper 31 moves to the upper bumper member 4 side, and the upper bumper member 4 The second stopper 31 is configured to receive a flange 33 (to be described later) and suppress the movement of the lower bumper face 3 beyond the predetermined length toward the upper bumper member 4.

前記第２ストッパ３１の下端部は車両後方側Ｒｒに突出するフランジ３３に構成されている（図２参照）。また、第２ストッパ３１の車幅方向中央側の側部に上下全長にわたる第２縦リブ３４Ａが形成され、前記フランジ３３の上面と第２ストッパ３１の下端部の裏面との間に複数のリブ３４Ｂが車幅方向に間隔を空けて架設されている。複数のリブ３４Ｂのうち、車幅方向中央側の複数のリブ３４Ｂは車幅方向外側の複数のリブ３４Ｂよりも高さ寸法が高く設定されている（図４参照）。   The lower end portion of the second stopper 31 is configured as a flange 33 that protrudes toward the vehicle rear side Rr (see FIG. 2). Further, a second vertical rib 34 </ b> A is formed on the side of the second stopper 31 on the center side in the vehicle width direction so as to extend vertically and vertically. 34B is erected at intervals in the vehicle width direction. Among the plurality of ribs 34B, the plurality of ribs 34B on the center side in the vehicle width direction are set to be higher in height than the plurality of ribs 34B on the outer side in the vehicle width direction (see FIG. 4).

図６，図８に示すように、上側バンパフェイス２や下側バンパフェイス３に衝撃荷重が加わると、第１ストッパ３０と第２ストッパ３１が上側バンパメンバ４に受け止められて、下側バンパフェイス３の車両後方側Ｒｒ側（上側バンパメンバ４側）への所定長さを越える移動が抑制される。この場合、第１ストッパ３０は潰れながら下側バンパフェイス３の車両後方側Ｒｒ側への移動を抑制するので、衝撃荷重を吸収することができる。図６の符号５０は衝突相手を示している。また、図６の破線の第１ストッパ３０は潰れて変形した状態を示している。   As shown in FIGS. 6 and 8, when an impact load is applied to the upper bumper face 2 and the lower bumper face 3, the first stopper 30 and the second stopper 31 are received by the upper bumper member 4 and the lower bumper face 3. The movement beyond the predetermined length to the vehicle rear side Rr side (upper bumper member 4 side) is suppressed. In this case, since the first stopper 30 is crushed and suppresses the movement of the lower bumper face 3 toward the vehicle rear side Rr, the impact load can be absorbed. The code | symbol 50 of FIG. 6 has shown the collision other party. Moreover, the 1st stopper 30 of the broken line of FIG. 6 has shown the state which was crushed and deformed.

これにより、例えば衝突相手が歩行者であった場合、上側バンパメンバ４の車両前方側Ｆｒの下側バンパフェイス部分に衝突した歩行者の膝５１（衝突相手の一部分に相当、図８参照）と、下側バンパメンバ５の車両前方側Ｆｒの下側バンパフェイス部分に衝突した歩行者の脛５２（衝突相手の一部分に相当）との車両後方側Ｒｒへの移動量の差が大きくなり過ぎることを防止できて、歩行者の脚部に対する保護性能を向上させることができるとともに、上側バンパメンバ４の車両前方側Ｆｒの下側バンパフェイス部分での衝撃吸収性能を向上させて衝撃荷重を分散させやすくすることができる。
また、第１ストッパ３０と第２ストッパ３１は上側バンパフェイス２の下端部に一体に設けられているから、部品点数を削減して構造を簡素化することができる。しかも、凹み部１６に突出した状態で設けられるので、製造型の構成が容易になるなど生産性が向上する。 Thereby, for example, when the collision partner is a pedestrian, the pedestrian's knee 51 (corresponding to a part of the collision partner, see FIG. 8) that collided with the lower bumper face part of the vehicle front side Fr of the upper bumper member 4; Prevents the difference in the amount of movement of the pedestrian's shin 52 (corresponding to a part of the colliding opponent) from the lower bumper member 5 to the vehicle front side Fr from the vehicle rear side Rr from becoming too large. It is possible to improve the protection performance of the pedestrian's legs, and to improve the shock absorption performance of the upper bumper member 4 at the lower bumper face portion of the vehicle front side Fr to facilitate the dispersion of the impact load. Can do.
Further, since the first stopper 30 and the second stopper 31 are integrally provided at the lower end portion of the upper bumper face 2, the number of parts can be reduced and the structure can be simplified. In addition, since it is provided in a state of projecting into the recessed portion 16, the productivity is improved, for example, the construction of the manufacturing mold becomes easy.

そして、第１ストッパ３０が上側バンパメンバ４に受け止められて潰れることで、上側バンパフェイス２の車両後方側Ｒｒ側への移動を抑制し、上側バンパフェイス２への衝撃荷重を吸収することができて、歩行者を保護しやすくすることができる。つまり、第１ストッパ３０と第２ストッパ３１は上側バンパフェイス２の下端部に一体に設けられ、下側バンパフェイス３の裏側に配置されているので、上側バンパメンバ４と当接して上側バンパフェイス２に加えられた衝撃荷重と下側バンパフェイス３に加えられた衝撃荷重のどちらにも作用させることができる。   Since the first stopper 30 is received by the upper bumper member 4 and crushed, the movement of the upper bumper face 2 toward the vehicle rear side Rr can be suppressed, and the impact load to the upper bumper face 2 can be absorbed. , Can help protect pedestrians. That is, since the first stopper 30 and the second stopper 31 are integrally provided at the lower end portion of the upper bumper face 2 and are disposed on the back side of the lower bumper face 3, the upper bumper face 2 comes into contact with the upper bumper member 4. Can be applied to both the impact load applied to the lower bumper face 3 and the impact load applied to the lower bumper face 3.

第１ストッパ３０は車幅方向に長い板状に形成されて前記上側バンパメンバ４側ほど下方に位置する状態に傾斜しているから、図７に示すように、第１ストッパ３０の傾斜角の大きさや縦断面における第１ストッパ３０の長さや板厚により第１ストッパ３０の性能（衝撃荷重を分散させる性能）を決定することができ、第１ストッパ３０の性能を所望の性能に設定しやすくすることができる。   Since the first stopper 30 is formed in a plate shape that is long in the vehicle width direction and is inclined so as to be positioned downward toward the upper bumper member 4 side, as shown in FIG. 7, the inclination angle of the first stopper 30 is large. The performance of the first stopper 30 (performance for dispersing the impact load) can be determined by the length and thickness of the first stopper 30 in the longitudinal section, and the performance of the first stopper 30 can be easily set to a desired performance. be able to.

図７における符号ｃは、衝突後の早い段階から衝撃荷重を分散させたい場合の第１ストッパ３０（第１の別実施形態の第１ストッパ３０）の位置を示し、符号ａは衝突後の遅い段階から衝撃荷重を分散させたい場合の第１ストッパ３０（第２の別実施形態の第１ストッパ３０）の位置を示している。符号ｂはａとｃの中間の段階から衝撃荷重を分散させたい場合の第１ストッパ３０の位置を示し、本実施形態での第１ストッパ３０の位置を示している。このように、衝撃荷重の吸収タイミングを調整することが可能となる。   7 indicates the position of the first stopper 30 (the first stopper 30 of the first alternative embodiment) when the impact load is to be dispersed from an early stage after the collision, and the symbol a is late after the collision. The position of the 1st stopper 30 (1st stopper 30 of 2nd another embodiment) in the case of wanting to disperse | distribute an impact load from the step is shown. Reference symbol b indicates the position of the first stopper 30 when it is desired to disperse the impact load from an intermediate stage between a and c, and indicates the position of the first stopper 30 in the present embodiment. In this way, it is possible to adjust the impact load absorption timing.

また、第１取り付けフランジ１２が前記係合凹部１７に車両前方側Ｆｒから挿入係合されることで、上側バンパフェイス２と下側バンパフェイス３を確実に位置決めすることができるとともに、バンパフェイスの端縁を隠すことができ外観が向上する。そして、前記係合凹部１７の下壁２９と前記第１ストッパ３０の間に架設される複数の縦リブ３２の厚さや数量により第１ストッパ３０の性能（衝撃荷重を分散させる性能）を決定することができ、第１ストッパ３０の性能を所望の性能に設定しやすくすることができる。   Further, the first mounting flange 12 is inserted and engaged with the engagement recess 17 from the front side Fr of the vehicle, whereby the upper bumper face 2 and the lower bumper face 3 can be reliably positioned, and the bumper face The edge can be hidden and the appearance is improved. The performance (performance of dispersing the impact load) of the first stopper 30 is determined by the thickness and quantity of the plurality of vertical ribs 32 installed between the lower wall 29 of the engagement recess 17 and the first stopper 30. It is possible to easily set the performance of the first stopper 30 to a desired performance.

そして、第１ストッパ３０が、上側バンパフェイス２の下端部の車幅方向中央部に位置し、第１ストッパ部３０の車幅方向の両側に第２ストッパ３１が位置しているから、車幅方向の広い範囲において歩行者の脚部を受け止めて保護することができる。   And since the 1st stopper 30 is located in the vehicle width direction center part of the lower end part of the upper side bumper face 2, and the 2nd stopper 31 is located in the both sides of the vehicle width direction of the 1st stopper part 30, vehicle width The pedestrian's legs can be received and protected in a wide range of directions.

２ 上側バンパフェイス
３ 下側バンパフェイス
４ 上側バンパメンバ
４Ｍ バンパメンバの前面
５ 下側バンパメンバ
１２ 取り付けフランジ（第１取り付けフランジ）
１７ 係合凹部
２９ 下壁
３０ ストッパ
３０Ｋ 下端部（ストッパの下端部）
３２ 縦リブ
Ｒｒ 車両後方側
Ｆｒ 車両前方側
2 Upper bumper face 3 Lower bumper face 4 Upper bumper member 4M Front face of bumper member 5 Lower bumper member 12 Mounting flange (first mounting flange)
17 Engaging recess 29 Lower wall 30 Stopper 30K Lower end (lower end of stopper)
32 Vertical rib Rr Vehicle rear side Fr Vehicle front side

Claims (6)

下側バンパフェイスの上端部が上側バンパフェイスの下端部に連結され、
前記下側バンパフェイスの裏側に上側バンパメンバと下側バンパメンバが配置されている車両用のフロントバンパであって、
前記下側バンパフェイスと上側バンパメンバの間で前記上側バンパメンバに対向し、前記下側バンパフェイスに衝撃荷重が加わると、前記上側バンパメンバに受け止められて前記下側バンパフェイスの前記上側バンパメンバ側への移動を抑制するストッパが前記上側バンパフェイスの下端部に一体に設けられている車両用のフロントバンパ。 The upper end of the lower bumper face is connected to the lower end of the upper bumper face,
A front bumper for a vehicle in which an upper bumper member and a lower bumper member are arranged on the back side of the lower bumper face,
The upper bumper member is opposed to the upper bumper member between the lower bumper face and the upper bumper member, and when an impact load is applied to the lower bumper face, the upper bumper member is received and the lower bumper face moves toward the upper bumper member. A front bumper for a vehicle, in which a stopper for suppressing the movement is provided integrally with a lower end portion of the upper bumper face. 前記上側バンパメンバに受け止められた前記ストッパは潰れながら前記下側バンパフェイスの前記上側バンパメンバ側への移動を抑制する請求項１記載の車両用のフロントバンパ。   The vehicle front bumper according to claim 1, wherein the stopper received by the upper bumper member suppresses movement of the lower bumper face toward the upper bumper member while being crushed. 前記ストッパは車幅方向に沿う板状に形成されて、前記上側バンパメンバ側ほど下方に位置する状態に傾斜している請求項１又は２記載の車両用のフロントバンパ。   The vehicle front bumper according to claim 1, wherein the stopper is formed in a plate shape along a vehicle width direction and is inclined so as to be positioned downward toward the upper bumper member. 縦断面において、前記ストッパの下端部が前記上側バンパメンバの前面にほぼ沿うように折曲している請求項３記載の車両用のフロントバンパ。   The front bumper for a vehicle according to claim 3, wherein a lower end portion of the stopper is bent so as to be substantially along a front surface of the upper bumper member in a longitudinal section. 前記下側バンパフェイスの上端部に車両後方側に突出する取り付けフランジが折曲形成され、
前記上側バンパフェイスの下端部に車両前方側に開放した断面コの字状の係合凹部が形成されて、前記取り付けフランジが前記係合凹部に車両前方側から挿入係合されるよう構成され、
前記係合凹部の下壁と前記ストッパの間に縦リブが架設されている請求項３又は４記載の車両用のフロントバンパ。 A mounting flange protruding to the vehicle rear side is bent at the upper end of the lower bumper face,
An engagement recess having a U-shaped cross-section opened to the vehicle front side is formed at the lower end of the upper bumper face, and the mounting flange is configured to be inserted and engaged with the engagement recess from the vehicle front side.
The front bumper for a vehicle according to claim 3 or 4, wherein a vertical rib is provided between the lower wall of the engagement recess and the stopper. 前記ストッパは前記上側バンパフェイスの下端部の車幅方向の中央部に車幅方向に長く形成されている請求項１〜５のいずれか一つに記載の車両用のフロントバンパ。   The front bumper for a vehicle according to any one of claims 1 to 5, wherein the stopper is formed long in a vehicle width direction at a center portion in a vehicle width direction of a lower end portion of the upper bumper face.
JP2009134003A 2009-06-03 2009-06-03 Front bumper for vehicle Pending JP2010280268A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012148613A (en) * 2011-01-17 2012-08-09 Honda Motor Co Ltd Bumper face structure of automobile
CN103596811A (en) * 2011-06-10 2014-02-19 铃木株式会社 Vehicle body front structure
JPWO2017006925A1 (en) * 2015-07-08 2018-03-08 新日鐵住金株式会社 Bumper reinforcement and vehicle equipped with the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012148613A (en) * 2011-01-17 2012-08-09 Honda Motor Co Ltd Bumper face structure of automobile
CN103596811A (en) * 2011-06-10 2014-02-19 铃木株式会社 Vehicle body front structure
CN103596811B (en) * 2011-06-10 2015-10-21 铃木株式会社 Vehicle body front structure
JPWO2017006925A1 (en) * 2015-07-08 2018-03-08 新日鐵住金株式会社 Bumper reinforcement and vehicle equipped with the same
CN107848475A (en) * 2015-07-08 2018-03-27 新日铁住金株式会社 Bumper reinforcement and the vehicle for possessing the bumper reinforcement
US10464511B2 (en) 2015-07-08 2019-11-05 Nippon Steel Corporation Bumper reinforcement and vehicle including the same
CN107848475B (en) * 2015-07-08 2020-08-25 日本制铁株式会社 Bumper reinforcement and vehicle provided with same

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