JP2006001358A - Front structure of vehicle - Google Patents

Front structure of vehicle Download PDF

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Publication number
JP2006001358A
JP2006001358A JP2004178265A JP2004178265A JP2006001358A JP 2006001358 A JP2006001358 A JP 2006001358A JP 2004178265 A JP2004178265 A JP 2004178265A JP 2004178265 A JP2004178265 A JP 2004178265A JP 2006001358 A JP2006001358 A JP 2006001358A
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Japan
Prior art keywords
vehicle
shroud
plate
shroud panel
front plate
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Granted
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JP2004178265A
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Japanese (ja)
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JP4351957B2 (en
Inventor
Tadashi Uto
正 宇戸
Michiharu Kawasaki
道治 川崎
Kazumasa Kondo
和真 近藤
Masaki Ogawa
雅規 小川
Kunio Takahashi
邦夫 高橋
Takahide Ohira
隆英 大平
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Mazda Motor Corp
Daikyo Nishikawa Corp
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Mazda Motor Corp
GP Daikyo Corp
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Priority to JP2004178265A priority Critical patent/JP4351957B2/en
Publication of JP2006001358A publication Critical patent/JP2006001358A/en
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Publication of JP4351957B2 publication Critical patent/JP4351957B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection

Abstract

<P>PROBLEM TO BE SOLVED: To effectively reduce the shock a pedestrian may receive from a skirt part of a front bumper of a vehicle when colliding with the vehicle. <P>SOLUTION: A shroud panel 1 is formed with an extended part 11e projecting to the front of the vehicle from a lower wall part 11b. A plate part 20a of a front plate 20 is fastened and fixed to the extended part 11e by a bolt 25. The front plate 20 is provided with an inclined part 20b extending from the plate part 20a upward to the front of the vehicle, and a curved part 20c curved from the inclined part 20b downward to the front of the vehicle, and formed to bend upward approximately in chevron shape as a whole. The curved part 20c of the front plate 20 is disposed in proximity to the back face of the skirt part S of the front bumper B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、車両の前部構造に関し、特に、歩行者との衝突の際の衝撃を緩衝するための緩衝構造の技術分野に属する。   The present invention relates to a front structure of a vehicle, and particularly belongs to the technical field of a buffer structure for buffering an impact at the time of a collision with a pedestrian.

従来より、車両が歩行者と衝突した際の衝撃を吸収する衝撃吸収構造として、例えば特許文献１に示すように、フロントバンパ下側のスカート部を衝突時の衝撃によって変形させることで、歩行者の脚部への衝撃を軽減するようにしたものが知られている。具体的には、車体のフレームに連結された支持部材とフロントバンパのスカート部との間にクッション部を設けて、該フロントバンパのスカート部から伝達される衝撃をクッション部の圧縮方向の変形によって吸収し、軽減するようにしている。
特開２００１−１４６１４０号 Conventionally, as an impact absorbing structure that absorbs an impact when a vehicle collides with a pedestrian, for example, as shown in Patent Document 1, a skirt portion on the lower side of a front bumper is deformed by an impact at the time of a collision so that a pedestrian It is known to reduce the impact on the legs. Specifically, a cushion portion is provided between the support member connected to the frame of the vehicle body and the skirt portion of the front bumper, and an impact transmitted from the skirt portion of the front bumper is caused by deformation in the compression direction of the cushion portion. Absorb and reduce.
JP 2001-146140 A

しかしながら、上述のようにクッション部の圧縮方向の変形によって衝撃を吸収する構造では、該クッション部の変形量が比較的、小さいため、その変形によって衝突時の衝撃エネルギを十分に吸収することができず、歩行者の脚部に大きな衝撃が加わる可能性があった。   However, in the structure that absorbs the impact by the deformation of the cushion portion in the compression direction as described above, the amount of deformation of the cushion portion is relatively small, so that the impact energy at the time of collision can be sufficiently absorbed by the deformation. Therefore, there was a possibility that a large impact was applied to the legs of the pedestrian.

本発明は、斯かる点に鑑みてなされたものであり、その目的とするところは、車両の前部構造において、フロントバンパ下側のスカート部によって歩行者の受ける衝撃に着目して、これを効果的に軽減することのできる構造を提供することにある。   The present invention has been made in view of such a point, and the object of the present invention is to pay attention to the impact received by a pedestrian by the skirt portion below the front bumper in the front structure of the vehicle. It is to provide a structure that can be effectively reduced.

上記目的を達成するために、本発明に係る車両の前部構造では、フロントバンパ下側のスカート部と車体側に一体的に取り付けられたシュラウドパネルとの間に、衝突時の衝撃によって上方に容易に変形するような可撓性の部材（フロントプレート）を設けた。   In order to achieve the above object, in the vehicle front structure according to the present invention, the front bumper lower skirt portion and the shroud panel integrally attached to the vehicle body side are moved upward by an impact at the time of collision. A flexible member (front plate) that can be easily deformed was provided.

すなわち、請求項１の発明では、開口部に熱交換器の配置されるシュラウドパネルがフロントバンパ後方で車体に一体的に取り付けられた車両の前部構造を対象とする。そして、上記シュラウドパネルの下枠部には、車両前方に延びるようにシュラウド延出部が形成され、上記シュラウド延出部とフロントバンパとの間には可撓性のフロントプレートが配設されていて、上記フロントプレートは、車幅方向に長く、上記シュラウド延出部の前縁部に固定される平板部と、該平板部から車両前方側に向かって上方へ延びる傾斜部と、該傾斜部から車両前方側に向かって下方へ湾曲する湾曲部とからなり、該湾曲部がフロントバンパのスカート部裏面に近接して配置されているものとする。   That is, the invention of claim 1 is directed to a vehicle front structure in which a shroud panel in which a heat exchanger is disposed in an opening is integrally attached to a vehicle body behind a front bumper. A shroud extension is formed in the lower frame of the shroud panel so as to extend forward of the vehicle, and a flexible front plate is disposed between the shroud extension and the front bumper. The front plate is long in the vehicle width direction and is fixed to the front edge portion of the shroud extension portion, an inclined portion extending upward from the flat plate portion toward the vehicle front side, and the inclined portion And a curved portion that curves downward toward the front side of the vehicle, and the curved portion is disposed close to the back surface of the skirt portion of the front bumper.

請求項２の発明では、請求項１において、フロントプレートは、シュラウドパネルより低剛性に構成されているものとする。   According to a second aspect of the present invention, in the first aspect, the front plate is configured to have a lower rigidity than the shroud panel.

そして、請求項３の発明では、シュラウドパネルのシュラウド延出部の下面には、車両前後方向に延びる縦リブが車幅方向に離間して複数、突設され、フロントプレートの平板部には、該フロントプレートのシュラウド延出部への取付状態で上記縦リブが嵌入するように切欠部が形成されているものとする。   In the invention of claim 3, a plurality of vertical ribs extending in the vehicle front-rear direction are provided on the lower surface of the shroud extension portion of the shroud panel so as to protrude in the vehicle width direction. It is assumed that a notch portion is formed so that the vertical rib is fitted in a state where the front plate is attached to the shroud extension portion.

請求項１の発明に係る車両の前部構造によれば、車体に一体的に取り付けられたシュラウドパネルとフロントバンパのスカート部との間に配設されたフロントプレートは、その後端の平板部でシュラウドパネルのシュラウド延出部に固定されるとともに、該平板部から車両前方側に向かって上方へ延びる傾斜部と該傾斜部の前端側から下方に向かって湾曲する湾曲部とによって全体として上方に略フの字状に屈曲した形状になるため、車両が歩行者と衝突してフロントバンパ下側のスカート部に衝撃が加わった場合、上記フロントプレートは、スカート部に加わる力を湾曲部で受けて、シュラウドパネルに固定される平板部を中心として上方へ回動するように変形する。このように、フロントプレートを容易に上方に変形できるように構成することで、該フロントプレートの車両前方に位置するフロントバンパのスカート部は衝突時に車両後方側に大きく変形することができるようになる。   According to the vehicle front structure according to the first aspect of the present invention, the front plate disposed between the shroud panel integrally attached to the vehicle body and the skirt portion of the front bumper is the flat plate portion at the rear end. It is fixed to the shroud extension of the shroud panel, and upwards as a whole by an inclined portion that extends upward from the flat plate portion toward the vehicle front side and a curved portion that curves downward from the front end side of the inclined portion. Since the vehicle is bent in a generally U shape, when the vehicle collides with a pedestrian and an impact is applied to the skirt part below the front bumper, the front plate receives the force applied to the skirt part at the curved part. Then, it is deformed so as to rotate upward about a flat plate portion fixed to the shroud panel. In this way, by configuring the front plate so that it can be easily deformed upward, the skirt portion of the front bumper located on the front side of the front plate can be greatly deformed toward the rear side of the vehicle in the event of a collision. .

これにより、衝突の際にフロントバンパのスカート部に生じる衝撃が吸収されるため、歩行者の受ける衝撃を効果的に軽減することができるとともに、フロントバンパの車両後方側に配設される熱交換器等に対する衝撃も軽減することができる。   As a result, the impact generated in the skirt portion of the front bumper at the time of the collision is absorbed, so that the impact received by the pedestrian can be effectively reduced and the heat exchange disposed on the vehicle rear side of the front bumper. The impact on the vessel can also be reduced.

特に、請求項２の発明のように、フロントプレートの構造や材質等をシュラウドパネルよりも低剛性にすることで、衝突時の衝撃によってフロントプレートを容易に変形させることができ、衝撃を効果的に吸収することができる。   In particular, as in the invention of claim 2, by making the structure and material of the front plate less rigid than the shroud panel, the front plate can be easily deformed by the impact at the time of collision, and the impact is effective. Can be absorbed into.

請求項３の発明によれば、シュラウドパネルの延出部に車両前後方向に延びるように縦リブを設けるとともに、フロントプレートに該リブが嵌入するための切り欠き部を設けたため、熱交換器等が配設されるシュラウドパネルの延出部の剛性を縦リブによって確保しつつ、該延出部にフロントプレートを取り付けることが可能となる。   According to the invention of claim 3, since the longitudinal rib is provided in the extending portion of the shroud panel so as to extend in the vehicle front-rear direction, and the notch portion for fitting the rib into the front plate is provided, a heat exchanger or the like It is possible to attach the front plate to the extension part while securing the rigidity of the extension part of the shroud panel where the slab is disposed by the vertical rib.

以下、本発明の実施形態を図面に基づいて説明する。なお、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

図１は、本発明の実施形態に係る車両の前部構造が適用された自動車のフロントエンドモジュールＭを分解した状態で示す。このモジュールＭは、主として、概略矩形枠状をなす樹脂製シュラウドパネル１と、図示しないエンジンの冷却水を走行風によって冷却する熱交換器としてのラジエータ２と、該ラジエータ２の前方に配置される空調装置の熱交換器としてのコンデンサ３と、上記ラジエータ２の後側に取り付けられる冷却用ファン（図示せず）とによって構成されている。   FIG. 1 shows an exploded front end module M of an automobile to which a vehicle front structure according to an embodiment of the present invention is applied. The module M is mainly disposed in the front of the radiator 2 as a heat exchanger that cools the cooling water of the engine (not shown) by running wind, the resin shroud panel 1 having a substantially rectangular frame shape. It is comprised by the capacitor | condenser 3 as a heat exchanger of an air conditioner, and the cooling fan (not shown) attached to the rear side of the said radiator 2. FIG.

そして、上記モジュールＭは、図２に一例を示すような自動車Ｖ（車両）の前部においてラジエータグリルＧやフロントバンパーＢ等の後方に、図１及び図４に示すように、シュラウドパネル１が左右フロントサイドフレーム４，４（図には先端側のみ示す）の前端部を連結するようにして配置される。   The module M has a shroud panel 1 as shown in FIGS. 1 and 4 at the front of a vehicle V (vehicle) as shown in FIG. 2 behind the radiator grille G and the front bumper B. The front side frames 4, 4 (only the front end side is shown in the figure) are arranged so as to be connected.

上記シュラウドパネル１は、例えばガラス繊維で強化したポリプロピレン等の樹脂からなり、図３にも示すように、上記ラジエータ２（及びコンデンサ３）を保持するラジエータ保持部１１と、該ラジエータ保持部１１の左右（車幅方向）両側にそれぞれ設けられ、車体の左右フロントサイドフレーム４，４の前端フランジ部４ａ，４ａにそれぞれ締結される車体締結部１２，１２とを有している。   The shroud panel 1 is made of, for example, a resin such as polypropylene reinforced with glass fiber. As shown in FIG. 3, the radiator holding portion 11 that holds the radiator 2 (and the capacitor 3), and the radiator holding portion 11. Vehicle body fastening portions 12 and 12 are provided on both the left and right (vehicle width direction) sides and fastened to the front end flange portions 4a and 4a of the left and right front side frames 4 and 4 of the vehicle body.

上記ラジエータ保持部１１は、上下に相対向して車幅方向に延びる上壁部１１ａ及び下壁部１１ｂと、該上壁部１１ａ及び下壁部１１ｂの左側端部同士及び右側端部同士をそれぞれ連結する左右側壁部１１ｃ，１１ｃとを有していて、上記ラジエータ２の外形形状に対応して略矩形枠状をなしている。そして、それらの各壁部１１ａ〜１１ｃにより囲まれた開口部１１ｄにコアの前面を臨ませて、コンデンサ３及びラジエータ２が配置されるようになっている。   The radiator holding portion 11 includes an upper wall portion 11a and a lower wall portion 11b that are opposed to each other in the vertical direction and extend in the vehicle width direction, and the left end portions and the right end portions of the upper wall portion 11a and the lower wall portion 11b. The left and right side wall portions 11c and 11c are connected to each other, and have a substantially rectangular frame shape corresponding to the outer shape of the radiator 2. And the capacitor | condenser 3 and the radiator 2 are arrange | positioned so that the front surface of a core may face the opening part 11d enclosed by each of these wall parts 11a-11c.

また、上記左右の車体締結部１２，１２は、それぞれ、上記ラジエータ保持部１１の左右側壁部１１ｃ，１１ｃから車幅方向外側に向かって延出した板状のものであり、図４にのみ示すが、バンパーレインフォースメント７の左右両端部に配設されたクラッシュ部材５，５の後端部にそれぞれ設けられたフランジ部５ａ，５ａと、上記左右フロントサイドフレーム４，４のフランジ部４ａ，４ａとの間にそれぞれ介装されて、該バンパーレインフォースメントの左右フランジ部５ａ，５ａと共に左右フロントサイドフレーム４，４のフランジ部４ａ，４ａにボルトにより締結されるようになっている。   Further, the left and right vehicle body fastening portions 12, 12 are plate-like ones extending from the left and right side wall portions 11c, 11c of the radiator holding portion 11 toward the outer side in the vehicle width direction, and are shown only in FIG. Are the flange portions 5a, 5a provided at the rear end portions of the crash members 5, 5 disposed at the left and right end portions of the bumper reinforcement 7, and the flange portions 4a of the left and right front side frames 4, 4, respectively. 4a, and the left and right flange portions 5a and 5a of the bumper reinforcement, together with the flange portions 4a and 4a of the left and right front side frames 4 and 4, are fastened by bolts.

さらに、上記左右の車体締結部１２，１２の車幅方向外側には、図１及び図３に示すように、それぞれ、該車体締結部１２，１２に近接させて液体貯留用タンク及び吸気レゾネータのケーシング１５，１６を配設するためのケーシング配設部１５ａ，１６ａが一体成形されている。これらのケーシング配設部１５ａ，１６ａの後側には、それぞれ、車体前方に向かって開口する概略矩形断面の容器状に形成された樹脂製のケーシング本体部１５ｂ，１６ｂが組み合わされることで、液体貯留用タンク及び吸気レゾネータのケーシング１５，１６が構成される。   Further, on the outer sides in the vehicle width direction of the left and right vehicle body fastening portions 12 and 12, as shown in FIGS. 1 and 3, the liquid storage tank and the intake resonator are disposed close to the vehicle body fastening portions 12 and 12, respectively. Casing arrangement portions 15a and 16a for arranging the casings 15 and 16 are integrally formed. Resin casing body portions 15b and 16b formed in a container shape having a substantially rectangular cross section that opens toward the front of the vehicle body are combined on the rear side of these casing arrangement portions 15a and 16a, respectively. Casings 15 and 16 for a storage tank and an intake resonator are configured.

そして、本発明の特徴部分であるが、図４及び図５に示すように、上記シュラウドパネル１の下壁部１１ｂ（下枠部）には、車両前方側に延びるように板状の延出部１１ｅ（シュラウド延出部）が形成されていて、その下面には、車幅方向に所定間隔で並ぶ複数（本実施形態では３つ）のリブ１１ｇ，１１ｇ，…（縦リブ）が前後方向に延びるように形成されている。このリブ１１ｇ，１１ｇ，…は、その前方側の高さ寸法が小さくなるように車幅方向から見て略三角形状に形成されている。   As shown in FIGS. 4 and 5, the lower wall portion 11b (lower frame portion) of the shroud panel 1 has a plate-like extension so as to extend to the front side of the vehicle. A portion 11e (a shroud extending portion) is formed, and a plurality of (three in the present embodiment) ribs 11g, 11g,... (Vertical ribs) arranged at a predetermined interval in the vehicle width direction are formed in the front-rear direction. It is formed to extend. These ribs 11g, 11g,... Are formed in a substantially triangular shape when viewed from the vehicle width direction so that the height dimension on the front side is reduced.

また、上記延出部１１ｅの車幅方向両端（図中では左右）には、それぞれ、上方に延びるように延出縦壁部１１ｆ，１１ｆが形成されていて、該延出部１１ｅ及び延出縦壁部１１ｆの車両前方側（前縁部）には、その下側から重ねられるようにフロントプレート２０が配設され、複数のボルト２５，２５，…によって該延出部１１ｅ及び延出縦壁部１１ｆに締結固定されている。   Further, extending vertical wall portions 11f and 11f are formed at both ends in the vehicle width direction (left and right in the drawing) of the extending portion 11e so as to extend upward, respectively. A front plate 20 is disposed on the vehicle front side (front edge portion) of the vertical wall portion 11f so as to be overlapped from the lower side, and the extension portion 11e and the extension vertical portion are formed by a plurality of bolts 25, 25,. It is fastened and fixed to the wall 11f.

より詳しくは、フロントプレート２０は、シュラウドパネル１よりも低剛性の材料（例えばポリプロピレン等の樹脂）からなる車幅方向に長い板状部材であり、図５及び図７に示すように、シュラウドパネル１に取り付けられた状態でその車両前方側が上面視で略円弧状になるように形成されている。また、上記フロントプレート２０は、シュラウドパネル１への取付部である平板部２０ａと、該平板部２０ａから車両前方且つ上方に向かって延びる傾斜部２０ｂと、該傾斜部２０ｂから車両前方且つ下方に向かって湾曲する湾曲部２０ｃとを備え、全体として略フの字状に屈曲した形状になっている。そして、上記平板部２０ａ及び傾斜部２０ｂの車幅方向両端には、上方に延びるように取付縦壁部２０ｄ，２０ｄが形成されていて、該各取付縦壁部２０ｄ，２０ｄが上記シュラウドパネル１の延出縦壁部１１ｆ，１１ｆにそれぞれ重ねられた状態でボルト２５によって締結固定される。図７において２０ｊは上記ボルト２５の貫通孔である。   More specifically, the front plate 20 is a plate-like member that is longer in the vehicle width direction and is made of a material having a lower rigidity than the shroud panel 1 (for example, resin such as polypropylene). As shown in FIGS. 1, the front side of the vehicle is formed in a substantially arc shape when viewed from above. The front plate 20 includes a flat plate portion 20a that is an attachment portion to the shroud panel 1, an inclined portion 20b that extends forward and upward from the flat plate portion 20a, and a forward and downward direction of the vehicle from the inclined portion 20b. And a curved portion 20c that is curved toward the front, and is bent into a substantially U-shape as a whole. At both ends in the vehicle width direction of the flat plate portion 20a and the inclined portion 20b, mounting vertical wall portions 20d and 20d are formed so as to extend upward, and the mounting vertical wall portions 20d and 20d are respectively connected to the shroud panel 1. The bolts 25 are fastened and fixed in a state of being overlapped with the extended vertical wall portions 11f and 11f. In FIG. 7, 20 j is a through hole of the bolt 25.

上記平板部２０ａは、シュラウドパネル１の延出部１１ｅに比べて肉厚に形成されているとともに、図７に示すように、車幅方向に所定間隔で並ぶ複数（本実施形態では３箇所）のボルト貫通孔２０ｅ，２０ｅ，…が設けられていて、この貫通孔２０ｅに上記ボルト２５が挿通するようになっている。また、このボルト貫通孔２０ｅ，２０ｅ，…の周囲には、それぞれ、上面視で略矩形状の凹部２０ｆ，２０ｆ，…が設けられていて、図５及び図６に示すように、この凹部２０ｆは、車幅方向から見て略Ｕ字状に形成された座金２６が上記シュラウドパネル１の前端を挟みこんだ状態で位置するように構成されている。   The flat plate portion 20a is formed thicker than the extending portion 11e of the shroud panel 1, and as shown in FIG. 7, a plurality (three in this embodiment) are arranged in the vehicle width direction at predetermined intervals. Bolt through holes 20e, 20e,... Are provided, and the bolts 25 are inserted into the through holes 20e. Also, around the bolt through holes 20e, 20e,..., Recesses 20f, 20f,... That are substantially rectangular in top view are provided, and as shown in FIGS. Is configured such that a washer 26 formed in a substantially U shape when viewed from the vehicle width direction is positioned with the front end of the shroud panel 1 sandwiched therebetween.

さらに、上記平板部２０ａには、各凹部２０ｆ，２０ｆ，…に近接して車両前後方向に延びるスリット状の切欠部２０ｇ，２０ｇ，…が形成されていて、該平板部２０ａがシュラウドパネル１に取り付けられた状態で、上記切欠部２０ｇ，２０ｇ，…にシュラウドパネル１の延出部１１ｅに形成された上記リブ１１ｇ，１１ｇ，…がそれぞれ嵌入するようになっている。   Further, the flat plate portion 20a is formed with slit-shaped notches 20g, 20g,... Extending in the vehicle front-rear direction in the vicinity of the recesses 20f, 20f,. In the attached state, the ribs 11g, 11g,... Formed on the extending portion 11e of the shroud panel 1 are fitted into the notches 20g, 20g,.

上記傾斜部２０ｂ及び湾曲部２０ｃは、シュラウドパネル１の延出部１１ｅとほぼ同じ肉厚で形成されており、それらの下面には、上述の切欠部２０ｇ，２０ｇ，…に対応する車幅方向の位置に前後方向に延びるようにリブ２０ｈ，２０ｈ，…が形成されていて、上述のシュラウドパネル１の延出部１１ｅに取り付けられた状態で、該延出部１１ｅのリブ１１ｇ，１１ｇ，…の前方に位置するようになっている。   The inclined portion 20b and the curved portion 20c are formed with substantially the same thickness as the extending portion 11e of the shroud panel 1, and the lower surface thereof has a vehicle width direction corresponding to the notches 20g, 20g,. Ribs 20h, 20h,... Are formed so as to extend in the front-rear direction at the position, and the ribs 11g, 11g,... Of the extension portion 11e are attached to the extension portion 11e of the shroud panel 1 described above. It is designed to be located in front of.

このように構成されたフロントプレート２０は、図４に示すように、その後端側である平板部２０ａがシュラウドパネル１の延出部１１ｅ等に連結固定された状態で、前端側の湾曲部２０ｃがフロントバンパＢの下側のスカート部Ｓの裏面に近接するように配置される。すなわち、フロントバンパＢのスカート部Ｓは、その上部が車両後方側に屈曲するように形成されていて、この屈曲部分に沿うように上記フロントプレート２０の湾曲部２０ｃがスカート部Ｓに対して非締結状態で配置されている。   As shown in FIG. 4, the front plate 20 configured in this manner has a curved portion 20c on the front end side in a state where the flat plate portion 20a on the rear end side is connected and fixed to the extending portion 11e of the shroud panel 1 or the like. Are arranged so as to be close to the back surface of the lower skirt portion S of the front bumper B. That is, the skirt portion S of the front bumper B is formed so that the upper portion thereof is bent toward the rear side of the vehicle, and the curved portion 20c of the front plate 20 is not with respect to the skirt portion S along the bent portion. Arranged in a fastened state.

上述のような車両の前部構造において、車両Ｖが歩行者と衝突すると、その衝撃によりフロントバンパＢが車両後方側に変形するとともに、歩行者のほぼ脚部の高さに位置するスカート部Ｓにも変形が生じる。その際、スカート部Ｓの車両後方側には、車体（フロントサイドフレーム４，４）に取付固定されたシュラウドパネル１の延出部１１ｅから車両前方に向かって延びるフロントプレート２０が配設されているため、衝突時にスカート部Ｓに加わる力はフロントプレート２０に伝達される。   In the vehicle front structure as described above, when the vehicle V collides with a pedestrian, the impact causes the front bumper B to be deformed to the rear side of the vehicle and the skirt portion S positioned substantially at the height of the leg of the pedestrian. Deformation also occurs. At that time, on the vehicle rear side of the skirt portion S, a front plate 20 extending from the extension portion 11e of the shroud panel 1 attached and fixed to the vehicle body (front side frames 4, 4) to the front of the vehicle is disposed. Therefore, the force applied to the skirt portion S at the time of collision is transmitted to the front plate 20.

上記フロントプレート２０は、上述の如く、上方に略フの字状に屈曲するように形成され且つその後端側の平板部２０ａでシュラウドパネル１の延出部１１ｅに固定されているため、車両前方側から力を受ける（図４の白抜き矢印）と、その固定部分（平板部２０ａ）を中心として上記傾斜部２０ｂ及び湾曲部２０ｃが上方に回動するように変形する（図４の二点鎖線）。これにより、衝突の際、上記フロントバンパＢのスカート部Ｓはフロントプレート２０とともに車両後方側に大きく変形することになり、衝突時の衝撃を十分吸収することができる。なお、上述のようにフロントプレート２０が上方に変形する際には、その湾曲部２０ｃがフロントバンパＢのスカート部Ｓに対して非締結状態で配置されているため、上記フロントプレート２０及びスカート部Ｓの変形が妨げられることはない。   As described above, the front plate 20 is formed so as to be bent upward in a substantially U shape and is fixed to the extending portion 11e of the shroud panel 1 by the flat plate portion 20a on the rear end side. When the force is received from the side (the white arrow in FIG. 4), the inclined portion 20b and the curved portion 20c are deformed so as to rotate upward (two points in FIG. 4) around the fixed portion (flat plate portion 20a). Chain line). Thereby, at the time of a collision, the skirt part S of the said front bumper B will deform | transform greatly with respect to the vehicle rear side with the front plate 20, and can fully absorb the impact at the time of a collision. When the front plate 20 is deformed upward as described above, the curved portion 20c is disposed in a non-fastened state with respect to the skirt portion S of the front bumper B. The deformation of S is not hindered.

しかも、上述のように、上記フロントプレート２０の材質（例えばポリプロピレン）をシュラウドパネル１の材質（例えばガラス繊維入りのポリプロピレン）よりも低剛性のものを用いることで、衝突時の衝撃を効果的にフロントプレート２０で吸収することができる。   In addition, as described above, the material of the front plate 20 (for example, polypropylene) is less rigid than the material of the shroud panel 1 (for example, polypropylene containing glass fiber), so that the impact at the time of collision can be effectively reduced. It can be absorbed by the front plate 20.

以上より、本実施形態では、シュラウドパネル１の延出部１１ｅから前方に延びて上方に略フの字状に屈曲したフロントプレート２０を設けて、該フロントプレート２０を、その前端部である湾曲部２０ｃがフロントバンパＢのスカート部Ｓの裏面に近接するように配置したため、歩行者との衝突時に車両前方側から受ける衝撃によって上記フロントプレート２０がシュラウドパネル１との固定部分である後端側を支点として上方へ回動するように容易に変形し、この変形により衝突時の衝撃を十分に吸収することができる。   As described above, in the present embodiment, the front plate 20 extending forward from the extending portion 11e of the shroud panel 1 and bent upward in a substantially U shape is provided, and the front plate 20 is bent at its front end. Since the portion 20c is arranged so as to be close to the back surface of the skirt portion S of the front bumper B, the front plate 20 is a fixed portion with the shroud panel 1 due to the impact received from the front side of the vehicle at the time of a collision with a pedestrian. It is easily deformed so as to rotate upward with the fulcrum as a fulcrum, and this deformation can sufficiently absorb the impact at the time of collision.

したがって、フロントバンパＢのスカート部Ｓによって歩行者の脚部が受ける衝撃を軽減することができるとともに、上記シュラウドパネル１には衝撃がほとんど伝わらないため、該シュラウドパネル１に配設されるラジエータ２やコンデンサ３等を衝突時の衝撃から保護することもできる。   Therefore, the impact received by the pedestrian's legs by the skirt portion S of the front bumper B can be reduced, and the impact is hardly transmitted to the shroud panel 1. Therefore, the radiator 2 disposed on the shroud panel 1. It is also possible to protect the capacitor 3 and the like from the impact at the time of collision.

また、上記シュラウドパネル１の延出部１１ｅに前後方向に延びるようにリブ１１ｇを複数、突設するとともに、該延出部１１ｅにボルト締結されるフロントプレート２０の平板部２０ａに、上記リブ１１ｇに対応する位置に切欠部２０ｇを設けることで、延出部１１ｅの前後方向の剛性を確保しつつ、フロントプレート２０をシュラウドパネル１の延出部１１ｅに取り付けることが容易に可能となる。   A plurality of ribs 11g project from the extending portion 11e of the shroud panel 1 so as to extend in the front-rear direction, and the rib 11g is formed on the flat plate portion 20a of the front plate 20 that is bolted to the extending portion 11e. By providing the notch 20g at a position corresponding to the front plate 20, it is possible to easily attach the front plate 20 to the extension 11e of the shroud panel 1 while ensuring the rigidity of the extension 11e in the front-rear direction.

さらに、上述のように、前記シュラウドパネル１のリブ１１ｇ，１１ｇ，…の下面形状が、車両後方へいくに従い車両下方へ延びるように形成されているため、例えば歩行者以外の障害物との衝突時に車両前部に強い衝撃荷重が加わった場合、前記フロントプレート２０と前記シュラウドパネル１の延出部１１ｅとのボルト２５の締結が外れて、該フロントプレート２０が車両後方側へ押されても、該フロントプレート２０は、前記リブ１１ｇ，１１ｇ，…により車両下方へガイドされるため、シュラウドパネル１の内面と干渉若しくは衝突することがなく、軽衝突時等におけるシュラウドパネル１の補修及び交換を避けることができる。   Further, as described above, since the bottom surface shape of the ribs 11g, 11g,... Of the shroud panel 1 is formed to extend downward in the vehicle as it goes rearward of the vehicle, for example, collision with obstacles other than pedestrians. Sometimes, when a strong impact load is applied to the front part of the vehicle, the fastening of the bolt 25 between the front plate 20 and the extension part 11e of the shroud panel 1 is released and the front plate 20 is pushed to the rear side of the vehicle. Since the front plate 20 is guided downward by the ribs 11g, 11g,..., The front plate 20 does not interfere with or collide with the inner surface of the shroud panel 1, and the shroud panel 1 can be repaired and replaced at the time of a light collision or the like. Can be avoided.

（その他の実施形態）
本発明の構成は、上記実施形態に限定されるものではなく、それ以外の種々の構成を包含するものである。すなわち、上記実施形態では、フロントプレート２０の傾斜部２０ｂ及び湾曲部２０ｃの厚みをシュラウドパネル１の延出部１１ｅの厚みと同じにしているが、これに限らず、該延出部１１ｃの厚みより薄くなるようにしてもよい。また、フロントプレート２０のリブ２０ｈの板厚を薄くしたり、そのリブ高さを低くしたり、あるいはそのリブ２０ｈを削除したりしてもよい。こうすれば、フロントプレート２０はシュラウドパネル１に比べて剛性が低くなり、フロントプレート２０が衝突時の衝撃を受ける際には、その衝撃を効果的に吸収することができる。 (Other embodiments)
The configuration of the present invention is not limited to the above embodiment, but includes various other configurations. That is, in the said embodiment, although the thickness of the inclination part 20b and the curved part 20c of the front plate 20 is made the same as the thickness of the extension part 11e of the shroud panel 1, it is not restricted to this, The thickness of this extension part 11c It may be made thinner. Further, the thickness of the rib 20h of the front plate 20 may be reduced, the height of the rib may be reduced, or the rib 20h may be deleted. Thus, the rigidity of the front plate 20 is lower than that of the shroud panel 1, and when the front plate 20 receives an impact at the time of collision, the impact can be effectively absorbed.

また、上記実施形態では、シュラウドパネル１の延出部１１ｅの下面にリブ１１ｇを設けているが、この限りではなく、該延出部１１ｅの上面に設けるようにしてもよい。   Moreover, in the said embodiment, although the rib 11g is provided in the lower surface of the extension part 11e of the shroud panel 1, you may make it provide in the upper surface of this extension part 11e.

また、フロントバンパＢのスカート部Ｓは、フロントバンパの一部を構成するフロントエアダムであってもよい。   Further, the skirt portion S of the front bumper B may be a front air dam that constitutes a part of the front bumper.

さらに、シュラウドパネル１の車体締結部１２，１２の車幅方向外側に液体貯留用タンク及び吸気レゾネータのケーシング１５，１６を設けているが、この限りではなく、これらのケーシング１５，１６をシュラウドパネル１とは別に設けるようにしてもよい。   Furthermore, the tanks 15 and 16 for the liquid storage tank and the intake resonator are provided on the outer side in the vehicle width direction of the vehicle body fastening portions 12 and 12 of the shroud panel 1, but this is not restrictive, and these casings 15 and 16 are connected to the shroud panel. 1 may be provided separately.

本発明の実施形態に係る車両の前部構造が適用された自動車のフロントエンドモジュールを示す分解斜視図である。1 is an exploded perspective view showing a front end module of an automobile to which a vehicle front structure according to an embodiment of the present invention is applied. 自動車の前部の一例を示す図である。It is a figure which shows an example of the front part of a motor vehicle. シュラウドパネルの正面図である。It is a front view of a shroud panel. 車両前部の概略構成を示す図２のI−I線断面図である。It is the II sectional view taken on the line of FIG. 2 which shows schematic structure of a vehicle front part. フロントプレートとシュラウドパネルの延出部との取付部分を拡大して示す斜視図である。It is a perspective view which expands and shows the attachment part of the front plate and the extension part of a shroud panel. 図５のII−II線断面図である。It is the II-II sectional view taken on the line of FIG. フロントプレートの構造を示す斜視図である。It is a perspective view which shows the structure of a front plate.

符号の説明Explanation of symbols

Ｂ フロントバンパ
Ｓ スカート部
Ｍ フロントエンドモジュール
１ シュラウドパネル
２ ラジエータ（熱交換器）
３ コンデンサ（熱交換器）
７ バンパーレインフォースメント
１１ ラジエータ保持部
１１ａ 上壁部
１１ｂ 下壁部（下枠部）
１１ｄ 開口部
１１ｅ 延出部（シュラウド延出部）
１１ｇ リブ（縦リブ）
２０ フロントプレート
２０ａ 平板部
２０ｂ 傾斜部
２０ｃ 湾曲部
２０ｇ 切欠部
２０ｈ リブ
２５ ボルト B Front bumper S Skirt M Front end module 1 Shroud panel 2 Radiator (heat exchanger)
3 condenser (heat exchanger)
7 Bumper reinforcement 11 Radiator holding part 11a Upper wall part 11b Lower wall part (lower frame part)
11d opening 11e extension part (shroud extension part)
11g rib (vertical rib)
20 Front plate 20a Flat plate part 20b Inclined part 20c Bent part 20g Notch part 20h Rib 25 Bolt

Claims (3)

開口部に熱交換器の配置されるシュラウドパネルがフロントバンパ後方で車体に一体的に取り付けられた車両の前部構造であって、
上記シュラウドパネルの下枠部には、車両前方に延びるようにシュラウド延出部が形成され、
上記シュラウド延出部とフロントバンパとの間には可撓性のフロントプレートが配設されていて、
上記フロントプレートは、車幅方向に長く、上記シュラウド延出部の前縁部に固定される平板部と、該平板部から車両前方側に向かって上方へ延びる傾斜部と、該傾斜部から車両前方側に向かって下方へ湾曲する湾曲部とからなり、該湾曲部がフロントバンパのスカート部裏面に近接して配置されていることを特徴とする車両の前部構造。 A shroud panel in which a heat exchanger is arranged in an opening is a front structure of a vehicle integrally attached to a vehicle body behind a front bumper,
A shroud extending portion is formed on the lower frame portion of the shroud panel so as to extend forward of the vehicle,
A flexible front plate is disposed between the shroud extension and the front bumper,
The front plate is long in the vehicle width direction and is fixed to a front edge portion of the shroud extending portion, an inclined portion extending upward from the flat plate portion toward the vehicle front side, and the vehicle from the inclined portion. A vehicle front structure comprising: a curved portion that curves downward toward the front side, and the curved portion is disposed close to a back surface of a skirt portion of a front bumper. 請求項１において、
フロントプレートは、シュラウドパネルより低剛性に構成されていることを特徴とする車両の前部構造。 In claim 1,
The front structure of the vehicle is characterized in that the front plate has a lower rigidity than the shroud panel. 請求項１または２のいずれか一つにおいて、
シュラウドパネルのシュラウド延出部の下面には、車両前後方向に延びる縦リブが車幅方向に離間して複数、突設され、
フロントプレートの平板部には、該フロントプレートのシュラウド延出部への取付状態で上記縦リブが嵌入するように切欠部が形成されていることを特徴とする車両の前部構造。 In any one of Claim 1 or 2,
On the lower surface of the shroud extension portion of the shroud panel, a plurality of vertical ribs extending in the vehicle front-rear direction are provided apart from each other in the vehicle width direction.
A front structure of a vehicle, wherein a cutout portion is formed in the flat plate portion of the front plate so that the vertical rib is fitted in a state of being attached to the shroud extension portion of the front plate.
JP2004178265A 2004-06-16 2004-06-16 Vehicle front structure Expired - Fee Related JP4351957B2 (en)

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