JP5614457B2

JP5614457B2 - Body front structure

Info

Publication number: JP5614457B2
Application number: JP2012544230A
Authority: JP
Inventors: 義人寺島; 伸司大野; 増田　出光; 出光増田
Original assignee: Suzuki Motor Co Ltd
Current assignee: Suzuki Motor Co Ltd
Priority date: 2010-11-17
Filing date: 2011-11-14
Publication date: 2014-10-29
Anticipated expiration: 2031-11-14
Also published as: CN103201160A; CN103201160B; WO2012067058A1; JPWO2012067058A1

Description

本発明は、車体前方からの小さい荷重を受け止める樹脂製のバンパーネットが設けられている車体前部の構造に関する。 The present invention relates to a structure of a front portion of a vehicle body provided with a resin bumper net that receives a small load from the front of the vehicle body.

従来から、小型軽量の車両においては、コンパクトな設計が求められている。そのため、このタイプの車両では、バンパーメンバや車体前後方向に厚みのあるアブソーバを設けることなく、前後長さの短い前後部空間によって、車体前方からの荷重を吸収することができるような設計が求められている。 2. Description of the Related Art Conventionally, a compact design is required for a small and light vehicle. Therefore, this type of vehicle is required to have a design that can absorb the load from the front of the vehicle body by the front and rear space with a short front and rear length without providing bumper members or thick absorbers in the vehicle body front and rear direction. It has been.

一方、車両の車体前部には、エプロンサイドメンバ、バンパーネット、フロントバンパー等の部材が設けられている。そのため、車体前部に対して、エプロンサイドメンバは塑性変形しないが、フロントバンパーやバンパーネットが塑性変形する程度の比較的小さい荷重が掛かる場合、棒状物体（例えば、歩行者の脚部）が上下で平行に当接してサイドメンバまで荷重が加わる場合、車体前部の主骨格であるエプロンサイドメンバは剛性が高く、その前面に脚部が当接しても、該エプロンサイドメンバによって荷重を吸収することが難しく、棒状物体に比較的大きな荷重が掛かるおそれがあった。 On the other hand, members such as an apron side member, a bumper net, and a front bumper are provided at the front of the vehicle body. For this reason, the apron side member does not plastically deform with respect to the front part of the vehicle body, but when a relatively small load is applied to the extent that the front bumper and the bumper net are plastically deformed, the rod-like object (for example, the pedestrian's leg) moves up and down. When a load is applied to the side member by abutting in parallel, the apron side member, which is the main skeleton of the front part of the vehicle body, has high rigidity, and even if the leg part abuts on the front surface, the apron side member can absorb the load. However, there is a risk that a relatively large load is applied to the rod-shaped object.

そこで、従来の車両の中には、樹脂製のバンパーネットを車体前部に設け、このバンパーネットの構造を利用して、車体前方からの比較的小さい荷重を吸収しているものがある（例えば、特許文献１〜特許文献４参照）。この従来の車体前部の構造では、バンパーネットの上下の取付部を支点にして、上下方向の中央部が車体後方へ向かって曲がることにより、車体前方からの比較的小さい荷重を吸収するようになっている。 Therefore, some conventional vehicles are provided with a resin bumper net at the front of the vehicle body and absorb a relatively small load from the front of the vehicle body by utilizing this bumper net structure (for example, , See Patent Literature 1 to Patent Literature 4). In this conventional structure of the front part of the vehicle body, the upper and lower mounting parts of the bumper net are used as fulcrums, and the center part in the vertical direction is bent toward the rear of the vehicle body so as to absorb a relatively small load from the front of the vehicle body. It has become.

特開平１０−４４８９０号公報Japanese Patent Laid-Open No. 10-44890 特開２００８−８７６１５号公報JP 2008-87615 A 特開２００４−１５３８３２号公報JP 2004-153832 A 特開２００３−１０４１４２号公報JP 2003-104142 A

しかしながら、上述した従来の車体前部の構造においては、バンパーネットの主な機能がフロントバンパーを保持することなどにあるので、車体前方からの比較的小さい荷重を効率的に吸収することが難しく、局所的な荷重を低減できないという不具合を有していた。 However, in the above-described conventional structure of the front part of the vehicle body, the main function of the bumper net is to hold the front bumper. Therefore, it is difficult to efficiently absorb a relatively small load from the front of the vehicle body. The problem was that the typical load could not be reduced.

本発明はこのような実状に鑑みてなされたものであって、その目的は、車体前方から比較的小さい荷重が掛かる際に、バンパーネットのブロック部及びリブを平行して後退させ、車体後方のエプロンサイドメンバに当接させることより、棒状物体への荷重を上下方向で均等に分散し、局所的な荷重を低減させることが可能な車体前部の構造を提供することにある。 The present invention has been made in view of such a situation, and its purpose is to retract the block part and rib of the bumper net in parallel when a relatively small load is applied from the front of the vehicle body, An object of the present invention is to provide a structure of the front portion of the vehicle body that can evenly distribute the load on the rod-like object in the vertical direction and reduce the local load by contacting the apron side member.

上記従来技術の有する課題を解決するために、本発明は、車体前後方向に沿って延在し、かつ前端部の上下に平面部を有するエプロンサイドメンバの車体前方にバンパーメンバが設けられていない車体前部であって、前記エプロンサイドメンバの車体前方に位置するバンパーの背面側に樹脂製のバンパーネットが設けられている車体前部の構造において、前記バンパーネットの車体幅方向の左右両側には、ブロック部が設けられているとともに、車体上下方向へ沿って延びるリブが設けられ、前記バンパーネットの車体幅方向の左右両端は、前記エプロンサイドメンバに車体前方視で重なって配置され、かつ前記バンパーネットの前記エプロンサイドメンバへの取付部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されているとともに、前記バンパーネットの前記リブは、前記エプロンサイドメンバの前記平面部に車体前方視で重なりあるいは隣接して配置され、前記バンパーネットの前記ブロック部と前記リブとは互いに接続され、前記バンパーネットの前記取付部は、車体前方からの荷重で変形可能に構成されている。 In order to solve the above-described problems of the prior art, the present invention does not have a bumper member provided in front of the vehicle body of an apron side member that extends along the longitudinal direction of the vehicle body and has flat portions above and below the front end portion. In the structure of the front part of the vehicle body in which a resin bumper net is provided on the back side of the bumper located in front of the apron side member on the front side of the apron side member, on the left and right sides in the vehicle width direction of the bumper net Is provided with ribs extending in the vertical direction of the vehicle body with a block portion, and both left and right ends of the bumper net in the vehicle body width direction are arranged to overlap the apron side member when viewed from the front of the vehicle body, and An attachment portion of the bumper net to the apron side member is disposed so as to overlap the flat portion of the apron side member when viewed from the front of the vehicle body. And the rib of the bumper net is disposed on or adjacent to the flat surface portion of the apron side member when viewed from the front of the vehicle body, and the block portion of the bumper net and the rib are connected to each other, The mounting portion of the bumper net is configured to be deformable by a load from the front of the vehicle body.

また、本発明において、前記バンパーネットの前記取付部は、前記ブロック部の位置よりも下側に配置され、前記ブロック部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されている。 Further, in the present invention, the mounting portion of the bumper net is disposed below the position of the block portion, and the block portion is disposed so as to overlap the flat portion of the apron side member when viewed from the front of the vehicle body. ing.

さらに、本発明において、前記バンパーネットの前記ブロック部は、車体上下方向に間隔を空けて２つ以上設けられ、そのうちの１つ以上の前記ブロック部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されている。 Further, in the present invention, two or more of the block portions of the bumper net are provided at intervals in the vertical direction of the vehicle body, and one or more of the block portions are provided on the flat surface portion of the apron side member. Arranged in front view.

そして、本発明において、前記バンパーネットの前記取付部は、車体後方へ向かって突出する前面開口のボックスであって、車体側面視で中央部分が膨らんだ台形形状に形成され、車体前方からの荷重に対しては、前記取付部の中央部分が膨らみ、車体前後方向に位置する側面部分が変形するように構成されている。 In the present invention, the mounting portion of the bumper net is a box having a front opening that protrudes toward the rear of the vehicle body, and is formed in a trapezoidal shape with a central portion inflated in a side view of the vehicle body, and is loaded from the front of the vehicle body On the other hand, the central portion of the mounting portion swells and the side surface portion located in the longitudinal direction of the vehicle body is deformed.

また、本発明において、前記バンパーネットの上部は、ヘッドライトもしくは前記ヘッドライトの周辺の部材に取付けられており、前記エプロンサイドメンバの上下の前記平面部は、前記ヘッドライトの内側部を通る上下方向軸上において車体前方視で重なって配置され、かつ前記ヘッドライトの内側部の前端と車体側方視で前後方向に近接して配置されている。 In the present invention, the upper part of the bumper net is attached to a headlight or a member around the headlight, and the upper and lower planar parts of the apron side member are upper and lower parts passing through the inner part of the headlight. They are arranged on the direction axis so as to overlap with each other when viewed from the front of the vehicle body, and are arranged close to the front end of the inner portion of the headlight in the front-rear direction when viewed from the side of the vehicle.

上述の如く、本発明に係る車体前部の構造は、車体前後方向に沿って延在し、かつ前端部の上下に平面部を有するエプロンサイドメンバの車体前方にバンパーメンバが設けられていない車体前部であって、前記エプロンサイドメンバの車体前方に位置するバンパーの背面側に樹脂製のバンパーネットが設けられており、前記バンパーネットの車体幅方向の左右両側には、ブロック部が設けられているとともに、車体上下方向へ沿って延びるリブが設けられ、前記バンパーネットの車体幅方向の左右両端は、前記エプロンサイドメンバに車体前方視で重なって配置され、かつ前記バンパーネットの前記エプロンサイドメンバへの取付部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されているとともに、前記バンパーネットの前記リブは、前記エプロンサイドメンバの前記平面部に車体前方視で重なりあるいは隣接して配置され、前記バンパーネットの前記ブロック部と前記リブとは互いに接続され、前記バンパーネットの前記取付部は、車体前方からの荷重で変形可能に構成されている。
したがって、本発明の構造では、バンパーネットのエプロンサイドメンバへの取付部が車体前方からの荷重によって変形し、折り畳まれるように潰れると、接続しているブロック部とリブが平行な状態で後退してエプロンサイドメンバの前端部の上下平面部に接触することになる。このとき、取付部の潰れ残りとブロック部によって、変形後にフラットな面を構成し、変形した取付部とブロック部が、バンパーネットとエプロンサイドメンバの上下平面部との間に均等な間隔を形成するので、エプロンサイドメンバの上下平面部から荷重発生源の棒状物体（例えば、歩行者の脚部）への反力が上下方向で均等になり、脚部への局所的な荷重を避けることができる。As described above, the structure of the vehicle body front portion according to the present invention is a vehicle body that extends along the vehicle body longitudinal direction and has no bumper member in front of the vehicle body of the apron side member that has flat portions above and below the front end portion. A bumper net made of resin is provided on the rear side of the bumper located in front of the apron side member on the front side of the apron side member, and block parts are provided on both left and right sides of the bumper net in the vehicle body width direction. Ribs extending in the vertical direction of the vehicle body are provided, and both left and right ends of the bumper net in the vehicle width direction are disposed so as to overlap the apron side member when viewed from the front of the vehicle body, and the apron side of the bumper net The mounting portion to the member is disposed so as to overlap the flat surface portion of the apron side member when viewed from the front of the vehicle body, and the bumper The rib of the base plate overlaps or is adjacent to the flat portion of the apron side member when viewed from the front of the vehicle body, the block portion of the bumper net and the rib are connected to each other, and the mounting of the bumper net is performed The part is configured to be deformable by a load from the front of the vehicle body.
Therefore, in the structure of the present invention, when the attachment portion of the bumper net to the apron side member is deformed by the load from the front of the vehicle body and collapsed so as to be folded, the connected block portion and the rib are retracted in a parallel state. Thus, it comes into contact with the upper and lower plane portions of the front end portion of the apron side member. At this time, a flat surface is formed after the deformation by the remaining crush of the mounting portion and the block portion, and the deformed mounting portion and the block portion form an equal interval between the bumper net and the upper and lower flat surface portions of the apron side member. Therefore, the reaction force from the top and bottom flat part of the apron side member to the rod-shaped object (for example, the pedestrian's leg) of the load generation source becomes uniform in the vertical direction, and local loads on the leg part can be avoided. it can.

また、本発明の構造において、前記バンパーネットの前記取付部は、前記ブロック部の位置よりも下側に配置され、前記ブロック部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されているので、高剛性で反力の大きいエプロンサイドメンバの車体前方にバンパーネットのブロック部が位置することになり、上記発明の効果をより確実に奏することができる。 In the structure of the present invention, the mounting portion of the bumper net is disposed below the position of the block portion, and the block portion overlaps the flat portion of the apron side member when viewed from the front of the vehicle body. Since it is arranged, the block portion of the bumper net is positioned in front of the body of the apron side member having a high rigidity and a large reaction force, and the effects of the present invention can be achieved more reliably.

さらに、本発明の構造において、前記バンパーネットの前記ブロック部は、車体上下方向に間隔を空けて２つ以上設けられ、そのうちの１つ以上の前記ブロック部は、前記エプロンサイドメンバの前記平面部に車体前方視で重なって配置されているので、車体前方からの荷重を１つ以上のブロック部によって制御することが可能となり、上記発明の効果を確実に得ることができる。 Further, in the structure of the present invention, two or more of the block portions of the bumper net are provided in the vertical direction of the vehicle body, and one or more of the block portions are the planar portions of the apron side member. Therefore, the load from the front of the vehicle body can be controlled by one or more block portions, and the effects of the present invention can be obtained with certainty.

そして、本発明の構造において、前記バンパーネットの前記取付部は、車体後方へ向かって突出する前面開口のボックスであって、車体側面視で中央部分が膨らんだ台形形状に形成され、車体前方からの荷重に対しては、前記取付部の中央部分が膨らみ、車体前後方向に位置する側面部分が変形するように構成されているので、車体前方からの荷重によってバンパーネットの取付部が確実に折り畳まれて潰れることになり、車体前方からの荷重を効率的に吸収できるとともに、上記発明の効果を確実に得ることができる。 In the structure of the present invention, the mounting portion of the bumper net is a box having a front opening that protrudes toward the rear of the vehicle body, and is formed in a trapezoidal shape with a central portion inflated in a side view of the vehicle body. Because the center part of the mounting part swells and the side part located in the longitudinal direction of the vehicle body deforms, the mounting part of the bumper net is securely folded by the load from the front of the vehicle body. As a result, the load from the front of the vehicle body can be absorbed efficiently, and the effects of the present invention can be obtained with certainty.

また、本発明の構造において、前記バンパーネットの上部は、ヘッドライトもしくは前記ヘッドライトの周辺の部材に取付けられており、前記エプロンサイドメンバの上下の前記平面部は、前記ヘッドライトの内側部を通る上下方向軸上において車体前方視で重なって配置され、かつ前記ヘッドライトの内側部の前端と車体側方視で前後方向に近接して配置されているので、車体前方からの荷重入力時において、バンパーネットの上部取付部が、ヘッドライトの回転動作と共に後退し、ブロック部と変形した取付部の後退位置とがほぼ同じ位置になる。したがって、本発明の構造によれば、ブロック部と変形した取付部の前後方向位置をほぼ同じにすることが可能となり、棒状物体への反力を均等に設定することができる。 Further, in the structure of the present invention, the upper part of the bumper net is attached to a headlight or a member around the headlight, and the upper and lower flat parts of the apron side member are connected to the inner part of the headlight. Since it is arranged on the vertical axis through which it overlaps in the front view of the vehicle body, and is arranged close to the front end of the inner part of the headlight in the front-rear direction in the vehicle body side view, when a load is input from the front of the vehicle body The upper mounting portion of the bumper net is retracted along with the rotation of the headlight, so that the retracted position of the block portion and the deformed mounting portion is substantially the same position. Therefore, according to the structure of the present invention, the front-rear direction position of the block portion and the deformed attachment portion can be made substantially the same, and the reaction force to the rod-like object can be set uniformly.

本発明の実施形態に係る構造が適用される車両の車体前部を示す斜視図である。It is a perspective view which shows the vehicle body front part of the vehicle with which the structure which concerns on embodiment of this invention is applied. 図１の車体前部を、フロントバンパーを取外した状態で示す正面図である。It is a front view which shows the vehicle body front part of FIG. 1 in the state which removed the front bumper. 図２におけるＸ部の拡大正面図である。It is an enlarged front view of the X section in FIG. 図２におけるＸ部の拡大側面図である。FIG. 3 is an enlarged side view of a portion X in FIG. 2. 本発明の実施形態の車体前部に設けられるバンパーネットの一部を背面側から示す斜視図である。It is a perspective view which shows a part of bumper net provided in the vehicle body front part of embodiment of this invention from the back side. 本発明の実施形態に係る構造が適用される車両の車体前部に対して、車体前方から荷重が掛かった状態を、フロントバンパーを取外して示す側面図である。It is a side view which removes a front bumper and shows the state where the load was applied from the vehicle body front to the vehicle body front part to which the structure concerning the embodiment of the present invention is applied. 図６の車体前部において、ヘッドライトの回転動作が加わった状態を示す側面図である。FIG. 7 is a side view showing a state in which a rotation operation of a headlight is applied in the front part of the vehicle body of FIG. 6.

以下、本発明を図示の実施の形態に基づいて詳細に説明する。
図１〜図７は本発明の実施形態に係る車体前部の構造を示すものである。Hereinafter, the present invention will be described in detail based on illustrated embodiments.
FIGS. 1-7 shows the structure of the vehicle body front part based on embodiment of this invention.

図１〜図５に示すように、本発明の実施形態に係る構造が適用される車両の車体前部１には、主として、車体前後方向に沿って延在し、かつ車体幅方向の左右両側に間隔を置いて配置される左右一対のエプロンサイドメンバ２と、これらエプロンサイドメンバ２の車体前方に位置する樹脂製のバンパーネット３及びフロントバンパー４とが設けられている。しかし、本実施形態の車体前部１におけるエプロンサイドメンバ２の車体前方には、バンパーメンバが設けられていない。
エプロンサイドメンバ２は、車体前部１の主骨格を構成する剛性部材であり、エプロンサイドメンバ２の前端部に位置する上下の前後平面２ａ，２ｂには、図４に示すように、上下方向へ延びる平面部５が設けられている。また、バンパーネット３は、図１に示すように、フロントバンパー４の背面側に設けられ、エプロンサイドメンバ２の前端部に取付けられており、車体前方からの小さい（軽い）荷重を受け止める機能を有している。As shown in FIGS. 1 to 5, the vehicle body front portion 1 of the vehicle to which the structure according to the embodiment of the present invention is applied mainly extends along the vehicle body longitudinal direction and both left and right sides in the vehicle body width direction. A pair of left and right apron side members 2 disposed at a distance from each other, and a resin bumper net 3 and a front bumper 4 positioned in front of the apron side member 2 in the vehicle body are provided. However, a bumper member is not provided in front of the apron side member 2 in the vehicle body front portion 1 of the present embodiment.
The apron side member 2 is a rigid member constituting the main skeleton of the vehicle body front portion 1, and the upper and lower front and rear planes 2 a and 2 b positioned at the front end portion of the apron side member 2 are arranged in the vertical direction as shown in FIG. A flat surface portion 5 is provided to extend to. Further, as shown in FIG. 1, the bumper net 3 is provided on the back side of the front bumper 4 and is attached to the front end portion of the apron side member 2 and has a function of receiving a small (light) load from the front of the vehicle body. doing.

本実施形態のバンパーネット３は、図２〜図５に示すように、車体幅方向に沿って配置される樹脂成形品であり、バンパーネット３の車体幅方向の左右両端は、エプロンサイドメンバ２の前端部の平面部５に車体前方視で重なって配置されている。また、バンパーネット３の車体幅方向における左右両側の前面には、２つ以上（本実施形態では２つ）のブロック部６が設けられているとともに、車体上下方向へ沿ってネット本体の上下部まで延在するリブ７が設けられている。
上下２つのブロック部６は、車体前方視で横長の長方形形状にて車体前方へ向かって突出すべく形成されており、車体上下方向に間隔を空けて設けられている。しかも、これらブロック部６の上下中間部分には、車体幅方向へ延びるビード部６ａがそれぞれ形成されており、当該ビード部６ａの存在で、車体前方からの荷重によるブロック部６の変形を抑制し、ブロック部６がエプロンサイドメンバ２の平面部５に到達するまで、ブロック部６の形状が保持されるように構成されている。The bumper net 3 of the present embodiment is a resin molded product arranged along the vehicle body width direction as shown in FIGS. 2 to 5. The left and right ends of the bumper net 3 in the vehicle body width direction are the apron side members 2. Is disposed so as to overlap the flat portion 5 at the front end of the vehicle body as viewed from the front of the vehicle body. In addition, two or more (two in this embodiment) block portions 6 are provided on the front surfaces of the left and right sides of the bumper net 3 in the vehicle body width direction, and upper and lower portions of the net body along the vehicle body vertical direction. Ribs 7 extending up to are provided.
The two upper and lower block portions 6 are formed so as to protrude toward the front of the vehicle body in a horizontally long rectangular shape when viewed from the front of the vehicle body, and are provided at intervals in the vertical direction of the vehicle body. In addition, a bead portion 6a extending in the vehicle body width direction is formed at each of the upper and lower intermediate portions of the block portion 6, and the presence of the bead portion 6a suppresses deformation of the block portion 6 due to a load from the front of the vehicle body. The shape of the block 6 is maintained until the block 6 reaches the flat surface 5 of the apron side member 2.

本実施形態の各ブロック部６の内側部分とリブ７とは、互いに接続されて一体化されており、車体前方からの荷重によってバンパーネット３が車体後方に移動するときに、リブ７と接続した上下のブロック部６が、エプロンサイドメンバ２の前端部の平面部５に均等に当接するように構成されている。
このため、上下のブロック部６は、エプロンサイドメンバ２の平面部５に車体前方視で重なって配置されている。そして、リブ７も、エプロンサイドメンバ２の平面部５に車体前方視で重なって配置され、あるいは隣接して配置されている。The inner portion of each block portion 6 and the rib 7 of this embodiment are connected and integrated with each other, and connected to the rib 7 when the bumper net 3 moves to the rear of the vehicle body due to a load from the front of the vehicle body. The upper and lower block parts 6 are configured to abut against the flat part 5 at the front end part of the apron side member 2.
For this reason, the upper and lower block parts 6 are arranged so as to overlap the flat part 5 of the apron side member 2 when viewed from the front of the vehicle body. The ribs 7 are also arranged so as to overlap the flat portion 5 of the apron side member 2 when viewed from the front of the vehicle body or adjacent to each other.

また、本実施形態のバンパーネット３のエプロンサイドメンバ２への取付部８は、図２及び図３に示すように、エプロンサイドメンバ２の平面部５に車体前方視で重なって配置され、かつ、下位のブロック部６の位置よりも下側に配置されている。しかも、バンパーネット３のエプロンサイドメンバ２への取付部８は、車体前方からの荷重により変形可能な構造に構成されている。
そのため、バンパーネット３の取付部８は、図４及び図５に示すように、車体後方へ向かって突出する前面開口のボックス構造体であり、車体側面視で車体前後方向の中央部分が膨らんだ台形形状に形成されている。すなわち、取付部８の上下左右の４つの側面８ａ，８ｂ，８ｃ，８ｄは、車体前後方向で２つの台形部分にそれぞれ区画されており、車体後方側の台形部分の面積は、車体前方側の台形部分と比べて小さくなるように形成されている。これによって、バンパーネット３の取付部８は、車体前方からの荷重に対して、車体前後方向の中央部分が膨らみ、４つの側面８ａ，８ｂ，８ｃ，８ｄのうち、特に車体後方側の台形部分が潰れて変形し易くなっている。Further, as shown in FIGS. 2 and 3, the attachment portion 8 of the bumper net 3 of the present embodiment to the apron side member 2 is disposed so as to overlap the flat portion 5 of the apron side member 2 in the front view of the vehicle body, and The lower block unit 6 is disposed below the position. Moreover, the attachment portion 8 of the bumper net 3 to the apron side member 2 is configured to be deformable by a load from the front of the vehicle body.
Therefore, as shown in FIGS. 4 and 5, the mounting portion 8 of the bumper net 3 is a box structure body with a front opening that protrudes toward the rear of the vehicle body, and a central portion in the vehicle longitudinal direction is swollen when viewed from the side of the vehicle body. It is formed in a trapezoidal shape. That is, the four side surfaces 8a, 8b, 8c, and 8d of the mounting portion 8 are divided into two trapezoidal portions in the vehicle longitudinal direction, and the area of the trapezoidal portion on the rear side of the vehicle body is the front side of the vehicle body. It is formed to be smaller than the trapezoidal part. As a result, the mounting portion 8 of the bumper net 3 bulges in the center portion in the vehicle longitudinal direction with respect to the load from the front of the vehicle body, and of the four side surfaces 8a, 8b, 8c, and 8d, the trapezoidal portion particularly on the vehicle body rear side. Is crushed and easily deformed.

なお、取付部８の車体後方側の背面８ｅには、エプロンサイドメンバ２の係合部９と係合させる取付孔１０が穿設されており、当該取付孔１０に係合部９を差し込むことによって、バンパーネット３がエプロンサイドメンバ２に取付けられるようになっている。このため、係合部９は、エプロンサイドメンバ２の平面部５に突設されている。また、取付孔１０は、位置決め及び作業性を良くするため、車体幅方向へ延びる長孔形状に形成されている。 A mounting hole 10 for engaging with the engaging portion 9 of the apron side member 2 is formed in the rear surface 8e on the rear side of the vehicle body of the mounting portion 8, and the engaging portion 9 is inserted into the mounting hole 10. As a result, the bumper net 3 is attached to the apron side member 2. For this reason, the engaging part 9 protrudes from the flat part 5 of the apron side member 2. The mounting hole 10 is formed in a long hole shape extending in the vehicle body width direction in order to improve positioning and workability.

一方、本実施形態のバンパーネット３の上部３ａは、図２〜図４に示すように、左右両側の上縁から車体上方のヘッドライト１１へ向かって延びており、ヘッドライト１１（もしくはヘッドライト１１の周辺の部材）に取付けられている。また、エプロンサイドメンバ２の平面部５は、ヘッドライト１１の内側固定部１１ａを通る上下方向軸Ｃ上において車体前方視で重なって配置されている。しかも、エプロンサイドメンバ２の平面部５は、ヘッドライト１１の内側固定部１１ａの前端と車体側方視で前後方向に近接して配置されている。これにより、車体前方から荷重が掛かった場合、ヘッドライト１１の外側を支点としてヘッドライト１１が内側固定部１１ａを通る上下方向軸Ｃを基準に内側へ回動し、バンパーネット３の上部３ａは、ヘッドライト１１の回転動作と共に車体後方に移動して後退し、ブロック部６と変形した取付部８の後退位置とがほぼ同じ位置になるように構成されている。 On the other hand, as shown in FIGS. 2 to 4, the upper portion 3 a of the bumper net 3 of the present embodiment extends from the upper edges of the left and right sides toward the headlight 11 above the vehicle body, and the headlight 11 (or headlight). 11 peripheral members). Further, the flat surface portion 5 of the apron side member 2 is disposed so as to overlap in a front view of the vehicle body on the vertical axis C passing through the inner fixing portion 11 a of the headlight 11. Moreover, the flat portion 5 of the apron side member 2 is disposed close to the front end of the inner fixing portion 11a of the headlight 11 in the front-rear direction when viewed from the side of the vehicle body. As a result, when a load is applied from the front of the vehicle body, the headlight 11 rotates inward with respect to the vertical axis C passing through the inner fixing portion 11a with the outer side of the headlight 11 as a fulcrum, and the upper portion 3a of the bumper net 3 is As the headlight 11 rotates, the headlight 11 moves backward with respect to the vehicle body and moves backward so that the retracted position of the block portion 6 and the deformed mounting portion 8 are substantially the same position.

このように構成された本発明の実施形態に係る構造を備えた車両の車体前部１に対して、棒状物体（例えば、歩行者の脚部）がフロントバンパー４に当たって、図６の矢印Ｆで示すように車体前方から荷重が掛かると、バンパーネット３のエプロンサイドメンバ２への取付部８が車体前方からの荷重によって変形し、４つの側面８ａ，８ｂ，８ｃ，８ｄが潰れて折り畳まれる。これに伴って、接続している２つのブロック部６とリブ７が平行な状態で後退して、図６中の鎖線Ａで示すように、エプロンサイドメンバ２の前端部の平面部５に接触することになる。このとき、取付部８とブロック部６の潰れ残りによって、変形後にフラットな面を構成し、変形した取付部８とブロック部６が、バンパーネット３とエプロンサイドメンバ２の平面部５との間に均等な間隔を形成する。一方、従来の構造では、図６中の鎖線Ｂで示すように、バンパーネット３の上下の取付部を支点にして、上下方向の中央部が車体後方へ向かって曲がるに過ぎない。
また、本実施形態の車体前部１において、図７に示すように、ヘッドライト１１の回転動作が生じると、バンパーネット３の上部３ａの取付部分が車体後方へ後退し、図７中の鎖線Ａで示すように、ブロック部６と変形した取付部８の前後方向位置がほぼ同じになる。一方、従来の構造では、図７中の鎖線Ｂで示すように、バンパーネット３の上下の取付部を支点にして、上下方向の中央部が車体後方へ向かって曲がったままで、ヘッドライト１１の回転動作による変化は生じない。A rod-shaped object (for example, a pedestrian's leg) hits the front bumper 4 with respect to the vehicle body front portion 1 having the structure according to the embodiment of the present invention configured as described above, and is indicated by an arrow F in FIG. Thus, when a load is applied from the front of the vehicle body, the attachment portion 8 of the bumper net 3 to the apron side member 2 is deformed by the load from the front of the vehicle body, and the four side surfaces 8a, 8b, 8c, 8d are crushed and folded. Along with this, the two connected block portions 6 and the ribs 7 are retracted in a parallel state, and contact the flat portion 5 at the front end portion of the apron side member 2 as indicated by a chain line A in FIG. Will do. At this time, a flat surface is formed after the deformation by the remaining crushing of the mounting portion 8 and the block portion 6, and the deformed mounting portion 8 and the block portion 6 are between the bumper net 3 and the flat surface portion 5 of the apron side member 2. An even interval is formed. On the other hand, in the conventional structure, as indicated by a chain line B in FIG. 6, the central portion in the vertical direction is merely bent toward the rear of the vehicle body with the upper and lower mounting portions of the bumper net 3 as fulcrums.
Further, in the vehicle body front portion 1 of the present embodiment, as shown in FIG. 7, when the headlight 11 rotates, the mounting portion of the upper portion 3a of the bumper net 3 moves backward to the vehicle body, and the chain line in FIG. As shown by A, the front-rear direction positions of the block portion 6 and the deformed attachment portion 8 are substantially the same. On the other hand, in the conventional structure, as indicated by a chain line B in FIG. 7, the center portion in the vertical direction is bent toward the rear of the vehicle body with the upper and lower mounting portions of the bumper net 3 as fulcrums. There is no change due to rotational movement.

このように、本発明の実施形態に係る構造の車体前部１では、バンパーネット３のエプロンサイドメンバ２への取付部８が、エプロンサイドメンバ２の平面部５に車体前方視で重なって配置され、車体側面視で車体前後方向の中央部分が膨らんだ変形し易い台形形状に形成され、バンパーネット３の左右両側の上下ブロック部６及びリブ７がエプロンサイドメンバ２の平面部５に車体前方視で重なって配置されているとともに、互いに接続されているため、棒状物体（例えば、歩行者の脚部）による車体前方からの荷重によって変形し、折り畳まれるように潰れ、接続している２つのブロック部６とリブ７が平行な状態で後退してエプロンサイドメンバ２の前端部の平面部５に接触し、取付部８とブロック部６の潰れ残りによって、変形後にフラットな面を構成し、変形した取付部８とブロック部６が、バンパーネット３とエプロンサイドメンバ２の平面部５との間に均等な間隔を形成し、エプロンサイドメンバ３の平面部５から棒状物体への反力が上下方向で均等になり、車体前方からの荷重を緩和し、棒状物体への局所的な荷重を避けることができる。 As described above, in the vehicle body front portion 1 having the structure according to the embodiment of the present invention, the mounting portion 8 of the bumper net 3 to the apron side member 2 overlaps with the flat portion 5 of the apron side member 2 when viewed from the front of the vehicle body. The upper and lower block parts 6 and ribs 7 on the left and right sides of the bumper net 3 are formed on the flat part 5 of the apron side member 2 in front of the vehicle body. Since they are arranged so as to overlap each other and are connected to each other, they are deformed by a load from the front of the vehicle body by a rod-like object (for example, a pedestrian's leg), and are crushed and connected so as to be folded. The block portion 6 and the rib 7 are retracted in a parallel state and come into contact with the flat surface portion 5 at the front end portion of the apron side member 2. The mounting portion 8 and the block portion 6 which form a rat surface and form a uniform space between the bumper net 3 and the flat surface portion 5 of the apron side member 2, and from the flat surface portion 5 of the apron side member 3. The reaction force on the rod-like object becomes uniform in the vertical direction, the load from the front of the vehicle body can be reduced, and the local load on the rod-like object can be avoided.

以上、本発明の実施の形態につき述べたが、本発明は既述の実施の形態に限定されるものではなく、本発明の技術的思想に基づいて各種の変形及び変更が可能である。
例えば、既述の実施の形態では、２つのブロック部６がバンパーネット３の左右両側に設けられているが、適応車種などによって３つ以上のブロック部６がバンパーネット３の左右両側に設けられていても良い。この場合でも、１つ以上のブロック部６は、エプロンサイドメンバ２の平面部５に車体前方視で重なって配置されている必要がある。While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
For example, in the above-described embodiment, the two block portions 6 are provided on both the left and right sides of the bumper net 3, but three or more block portions 6 are provided on the left and right sides of the bumper net 3 depending on the applicable vehicle type. May be. Even in this case, the one or more block portions 6 need to be disposed so as to overlap the flat surface portion 5 of the apron side member 2 when viewed from the front of the vehicle body.

１車体前部
２エプロンサイドメンバ
３バンパーネット
４フロントバンパー
５平面部
６ブロック部
７リブ
８取付部
８ａ，８ｂ，８ｃ，８ｄ側面
９係合部
１０取付孔
１１ヘッドライト
１１ａ内側固定部DESCRIPTION OF SYMBOLS 1 Vehicle body front part 2 Apron side member 3 Bumper net 4 Front bumper 5 Plane part 6 Block part 7 Rib 8 Attachment part 8a, 8b, 8c, 8d Side surface 9 Engagement part 10 Attachment hole 11 Headlight 11a Inner fixed part

Claims

An apron side member that extends along the front-rear direction of the vehicle body and has a flat portion above and below the front end portion of the apron side member is not provided with a bumper member in front of the vehicle body and is positioned in front of the apron side member. In the structure of the front part of the vehicle body where a resin bumper net is provided on the back side of the bumper,
The left and right sides of the bumper net in the vehicle body width direction are provided with block portions and ribs extending along the vehicle body vertical direction,
The left and right ends of the bumper net in the vehicle body width direction are arranged so as to overlap the apron side member when viewed from the front of the vehicle body, and the mounting portion of the bumper net to the apron side member is located on the flat portion of the apron side member. The ribs of the bumper net are arranged so as to overlap or be adjacent to the flat portion of the apron side member when viewed from the front of the vehicle body.
The structure of the front portion of the vehicle body, wherein the block portion of the bumper net and the rib are connected to each other, and the mounting portion of the bumper net is configured to be deformable by a load from the front of the vehicle body.

The mounting portion of the bumper net is disposed below the position of the block portion, and the block portion is disposed so as to overlap the flat portion of the apron side member in a front view of a vehicle body. The structure of the vehicle body front part according to claim 1.

Two or more block portions of the bumper net are provided at an interval in the vertical direction of the vehicle body, and one or more of the block portions are arranged so as to overlap the flat surface portion of the apron side member when viewed from the front of the vehicle body. The structure of the front part of the vehicle body according to claim 2, wherein

The mounting portion of the bumper net is a box with a front opening that protrudes toward the rear of the vehicle body, and is formed in a trapezoidal shape with a central portion inflated in a side view of the vehicle body. The structure of the front part of the vehicle body according to any one of claims 1 to 3, wherein a central part of the mounting part is swelled and a side part located in the longitudinal direction of the vehicle body is deformed.

The upper part of the bumper net is attached to a headlight or a member around the headlight, and the upper and lower flat parts of the apron side member are on the front side of the vehicle body on the vertical axis passing through the inner part of the headlight. The front of the vehicle body according to any one of claims 1 to 4, wherein the front of the vehicle body is disposed so as to overlap with the front end of the inner portion of the headlight and close to the front-rear direction when viewed from the side of the vehicle body. Part structure.