JP2022105378A - Vehicle front structure - Google Patents

Vehicle front structure Download PDF

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JP2022105378A
JP2022105378A JP2021000106A JP2021000106A JP2022105378A JP 2022105378 A JP2022105378 A JP 2022105378A JP 2021000106 A JP2021000106 A JP 2021000106A JP 2021000106 A JP2021000106 A JP 2021000106A JP 2022105378 A JP2022105378 A JP 2022105378A
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vehicle
bumper
protrusion
wheel house
front wheel
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JP7289605B2 (en
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雅崇 馬渡
Masataka Mawatari
健一郎 嶋田
Kenichiro Shimada
健太郎 小西
Kentaro Konishi
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/82—Elements for improving aerodynamics

Abstract

To provide a vehicle front structure that improves aerodynamic characteristics of a vehicle by suppressing impact from a turbulent flow blowing out from a front wheel house.SOLUTION: A vehicle front structure includes a plate-like projection 400 formed within a width area of a horizontal corner part 210 in a vehicle width direction in the horizontal corner part 210 of a vehicle front part while projecting forward of the vehicle and extending in a vertical direction. The projection 400 is formed in a height range in a height direction which partially or entirely overlaps on a vehicle height range of an opening 310 of a front wheel house 300.SELECTED DRAWING: Figure 3

Description

本発明は、フロントバンパを備える車両前部構造に関する。 The present invention relates to a vehicle front structure including a front bumper.

車両の空力特性を向上させるため、フロントバンパを備えた車両前部においても、様々な工夫がなされている。 In order to improve the aerodynamic characteristics of the vehicle, various measures have been taken even in the front part of the vehicle equipped with a front bumper.

例えば特許文献１には、フロントバンパの車幅方向両側部において、フロントバンパの外側面から車両幅方向外側へ突出して段差状に形成された段差部を設けるとともに、段差部の前面を、側面視で車両後側へ向かうに従い車両下側へ傾斜する傾斜面とした構成が開示されている。 For example, in Patent Document 1, step portions are provided on both sides of the front bumper in the vehicle width direction so as to project outward in the vehicle width direction from the outer surface of the front bumper, and the front surface of the step portion is viewed from the side. Discloses a configuration in which an inclined surface is inclined toward the lower side of the vehicle toward the rear side of the vehicle.

特許文献１の構成は、段差部により車体外方に剥離したのち車体側面に近づく気流と、傾斜面によって下方に向けて方向転換させられた気流によって車両の走行方向を軸とした螺旋流を形成し、これによって車体側面の空気流れを整流することを期待するものである。 The configuration of Patent Document 1 forms a spiral flow about the traveling direction of the vehicle by the airflow that is separated to the outside of the vehicle body by the step portion and then approaches the side surface of the vehicle body and the airflow that is turned downward by the inclined surface. However, it is expected that this will rectify the air flow on the side of the vehicle body.

しかしながら、特許文献１の構成は、段差部からフロントホイールハウスまでの距離が短くなるため、上記した整流効果がフロントホイールハウスから吹き出す渦流（乱流）による空力特性低下要因を抑制するには至らず返って車両の空力特性を低下させることも懸念される。 However, in the configuration of Patent Document 1, since the distance from the stepped portion to the front wheel house is short, the above-mentioned rectifying effect does not suppress the aerodynamic characteristic deterioration factor due to the eddy current (turbulent flow) blown out from the front wheel house. On the contrary, there is a concern that the aerodynamic characteristics of the vehicle may be deteriorated.

特開２０１４－１３３４８７号公報Japanese Unexamined Patent Publication No. 2014-133487

本発明は、上記した事情のもとで考え出されたものであって、フロントホイールハウスから吹き出す乱流による影響を抑制して車両の空力特性を向上させることができる車両前部構造を提供することをその課題とする。 The present invention has been conceived under the above circumstances, and provides a vehicle front structure capable of suppressing the influence of turbulent flow blown from a front wheel house and improving the aerodynamic characteristics of the vehicle. That is the subject.

上記課題を解決するため、本発明では、次の技術的手段を採用した。 In order to solve the above problems, the following technical means are adopted in the present invention.

すなわち、本発明によって提供される車両前部構造は、車両前部の左右コーナ部において、上記左右コーナ部の車幅方向幅領域内に、車両前方に突出し、かつ上下方向に延びる板状の突出部が形成されており、上記突出部は、フロントホイールハウスの開口の上下高さ範囲と一部または全部が重なる高さ方向範囲に形成されていることを特徴としている。 That is, the vehicle front structure provided by the present invention is a plate-shaped protrusion that protrudes forward of the vehicle and extends in the vertical direction in the left and right corner portions of the vehicle front in the vehicle width direction width region of the left and right corner portions. A portion is formed, and the protruding portion is characterized in that it is formed in a height direction range in which a part or all of the vertical height range of the opening of the front wheel house overlaps.

上記構成の車両前部構造によれば、突出部の前端からフロントホイールハウスの開口の前端までの距離が延長されるため、突出部の外側面からフロントホイールハウスの開口の前端までの延長された車体側面に、左右コーナ部において剥離した気流が再付着しながら流れて整流される。このような整流された気流によりフロントホイールハウスから吹き出す乱流が抑制され、これにより車両の空力特性が向上させられる。 According to the vehicle front structure of the above configuration, since the distance from the front end of the protrusion to the front end of the opening of the front wheel house is extended, it is extended from the outer surface of the protrusion to the front end of the opening of the front wheel house. The airflow separated at the left and right corners flows and is rectified on the side surface of the vehicle body while reattaching. The rectified airflow suppresses the turbulence blown out from the front wheel house, which improves the aerodynamic characteristics of the vehicle.

本発明のその他の特徴および利点は、図面を参照して以下に行う詳細な説明から、より明らかとなろう。 Other features and advantages of the invention will become more apparent from the detailed description given below with reference to the drawings.

本発明の一実施形態を適用した車両の右側面図である。It is a right side view of the vehicle to which one Embodiment of this invention is applied. 図１に示した車両を前方から見た図であり、車両の左前部を部分的に示す。It is the figure which looked at the vehicle shown in FIG. 1 from the front, and shows the left front part of a vehicle partially. 図１のＩＩＩ－ＩＩＩ線に沿う模式的断面図である。FIG. 3 is a schematic cross-sectional view taken along the line III-III of FIG. 変形例を示す図であり、図１のＩＩＩ－ＩＩＩ線に沿う模式的断面図に相当する。It is a figure which shows the modification, and corresponds to the schematic sectional view along the line III-III of FIG.

以下、本発明の好ましい実施の形態につき、図面を参照して具体的に説明する。これらの図において、前方をｆｒ，後方をｒｒ，左方をｌｈ，右方をｒｈで示す。 Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. In these figures, the front is indicated by fr, the rear is indicated by rr, the left is indicated by lh, and the right is indicated by rh.

図１は、本発明が適用された車両前部構造Ａ１を左方から見た図であり、図２は、図１に示した車両を前方から見た図、図３は図１のＩＩＩ－ＩＩＩ線に沿う断面図である。 FIG. 1 is a left view of the vehicle front structure A1 to which the present invention is applied, FIG. 2 is a view of the vehicle shown in FIG. 1 as viewed from the front, and FIG. 3 is a view of III- of FIG. It is sectional drawing along the line III.

車両１００の前端部は、エンジンフード１１０と、その側方のフェンダ１２０と、バンパ２００とを含んで構成されている。図に示す実施形態では、エンジンフード１１０とフェンダ１２０と外面が一体感をなすようにしてバンパ２００が配置されている。バンパ２００は、全体として車幅方向に延び、左右コーナ部２１０を有する。バンパ２００の左右コーナ部２１０は、その外面が車幅方向外方に向かうにつれて後方に変位し、バンパ側面部２２０を形成している。バンパ側面部２２０の後端２２１は、フェンダ１２０の下縁１２１と協働してフロントホイールハウス３００の開口３１０を形成している。バンパ２００は、一般的には樹脂成型品である。 The front end portion of the vehicle 100 includes an engine hood 110, a fender 120 on the side thereof, and a bumper 200. In the embodiment shown in the figure, the bumper 200 is arranged so that the engine hood 110, the fender 120, and the outer surface form a sense of unity. The bumper 200 extends in the vehicle width direction as a whole and has left and right corner portions 210. The left and right corner portions 210 of the bumper 200 are displaced rearward as the outer surface thereof goes outward in the vehicle width direction to form the bumper side surface portion 220. The rear end 221 of the bumper side surface 220 cooperates with the lower edge 121 of the fender 120 to form the opening 310 of the front wheel house 300. The bumper 200 is generally a resin molded product.

本実施形態においてはまた、バンパ２００の左右コーナ部２１０には、フォグランプを配置するための凹部２３０が形成されている。 In the present embodiment, the left and right corner portions 210 of the bumper 200 are formed with recesses 230 for arranging fog lamps.

さて、本発明では、車両前部の左右コーナ部であるバンパ２００の左右コーナ部２１０の車幅方向幅領域内に、車両前方に突出し、上下方向に延びる板状の突出部４００が設けられる。本実施形態では、上記したフォグランプ配置用の凹部２３０の車幅方向外方の縁部２３１からさらに前方に突出するように設けられている。この突出部４００は、バンパ２００と一体成型してもよいが、本実施形態では、バンパ２００とは別体形成したものを接着等の固着手段により取り付けている。バンパ２００と一体形成する場合の突出部４００は、上記したフォグランプ配置用の凹部２３０を囲む縁として想定される部位よりもさらに前方に突出するように形成される。 In the present invention, a plate-shaped protruding portion 400 that protrudes forward of the vehicle and extends in the vertical direction is provided in the vehicle width direction width region of the left and right corner portions 210 of the bumper 200, which is the left and right corner portions of the front portion of the vehicle. In the present embodiment, the recess 230 for arranging the fog lamp is provided so as to project further forward from the outer edge portion 231 in the vehicle width direction. The protrusion 400 may be integrally molded with the bumper 200, but in the present embodiment, a protrusion 400 formed separately from the bumper 200 is attached by a fixing means such as adhesion. The protruding portion 400 when integrally formed with the bumper 200 is formed so as to project further forward from the portion assumed as the edge surrounding the recess 230 for arranging the fog lamp described above.

突出部４００の上下長さＴは任意でよいが、２０ｍｍ以上の上下長さを有することが好ましい。ただし、この突出部４００は、フロントホイールハウス３００の開口３１０の上下高さ範囲と一部または全部が重なる高さ方向範囲に形成されていることが必要である。本実施形態では、突出部４００は、フロントホイールハウス３００の開口３１０の高さ範囲に包含される高さ方向範囲に設けられている。突出部４００は突出部４００の前方突出長さＬは、バンパ２００の前端よりも前方に突出しない範囲で意匠的効果を勘案した任意でよいが、２０ｍｍ以上、好ましくは１００～２００ｍｍ程度とされる。 The vertical length T of the protrusion 400 may be arbitrary, but it is preferable that the protrusion 400 has a vertical length of 20 mm or more. However, the protrusion 400 needs to be formed in a height range in which a part or all of the vertical height range of the opening 310 of the front wheel house 300 overlaps. In the present embodiment, the protrusion 400 is provided in a height range included in the height range of the opening 310 of the front wheel house 300. The protrusion 400 may have an arbitrary forward protrusion length L of the protrusion 400 in consideration of a design effect within a range in which the protrusion 400 does not protrude forward from the front end of the bumper 200, but is set to 20 mm or more, preferably about 100 to 200 mm. ..

図３に良く表れているように、本実施形態では、突出部４００の外面４１０は、後方に向かうほど外方に広がる凸湾曲面４１１としている。この凸湾曲面４１１の曲率半径Ｒは、例えば６０～３００ｍｍとされる。この突出部４００の外面４１０は、バンパ２００の左右コーナ部２１０における上記フロントホイールハウス３００の開口３１０に至るまでのバンパ側面部２２０と一体的に連続するように形成することが望ましい。 As is well shown in FIG. 3, in the present embodiment, the outer surface 410 of the protrusion 400 is a convex curved surface 411 that expands outward toward the rear. The radius of curvature R of the convex curved surface 411 is, for example, 60 to 300 mm. It is desirable that the outer surface 410 of the protrusion 400 is formed so as to be integrally continuous with the bumper side surface portion 220 up to the opening 310 of the front wheel house 300 in the left and right corner portions 210 of the bumper 200.

次に、上記構成の車両前部構造の作用について説明する。 Next, the operation of the vehicle front structure having the above configuration will be described.

図３に示すように、バンパ２００が前方から受ける気流Ｆは、バンパ２００の左右コーナ部２１０に沿って流れる。このとき、突出部４００の外面４１０およびその後方にフロントホイールハウス３００の開口３１０まで続くバンパ２００のバンパ側面部２２０が気流を整流する延長された整流面５００として機能する。すなわち、バンパ２００の左右コーナ部２１０で気流が剥離したとしても、フロントホイールハウス３００の開口３１０に至るまでにバンパ側面部２２０に再付着して整流され、このことが車両１００の空力特性の向上に寄与する。 As shown in FIG. 3, the airflow F received by the bumper 200 from the front flows along the left and right corner portions 210 of the bumper 200. At this time, the outer surface 410 of the protrusion 400 and the bumper side surface 220 of the bumper 200 extending behind the outer surface 410 of the front wheel house 300 to the opening 310 function as an extended rectifying surface 500 for rectifying the air flow. That is, even if the airflow is separated at the left and right corner portions 210 of the bumper 200, it reattaches to the bumper side surface portion 220 and is rectified by the time it reaches the opening 310 of the front wheel house 300, which improves the aerodynamic characteristics of the vehicle 100. Contribute to.

さらには、上記のようにしてフロントホイールハウス３００の開口３１０に至るまでに整流されて後方に向けて流れる気流Ｆは、フロントホイールハウス３００の開口３１０から吹き出る乱流を押さえ込む役割を果たし、このことも車両１００の空力特性の向上に寄与する。 Further, the airflow F that is rectified up to the opening 310 of the front wheel house 300 and flows backward as described above plays a role of suppressing the turbulent flow that blows out from the opening 310 of the front wheel house 300. Also contributes to the improvement of the aerodynamic characteristics of the vehicle 100.

加えて、突出部４００の前端外面の凸湾曲面４１１に沿って流れる気流の流速が極大化することにより生じる負圧が、方向が車両前方である引張力Ｐとして車両１００に作用し、この作用が車両の空力特性を向上させる。 In addition, the negative pressure generated by maximizing the flow velocity of the airflow flowing along the convex curved surface 411 on the outer surface of the front end of the protrusion 400 acts on the vehicle 100 as a tensile force P whose direction is in front of the vehicle, and this action. Improves the aerodynamic characteristics of the vehicle.

本実施形態では、突出部４００はバンパ２００と別体に形成したものを取り付けているので、突出部４００の色彩をバンパ２００の色彩と異ならせるなどして、車両１００の外観デザインの自由度を高めることができる。 In the present embodiment, since the protrusion 400 is attached separately from the bumper 200, the color of the protrusion 400 is different from the color of the bumper 200, so that the degree of freedom in the appearance design of the vehicle 100 can be increased. Can be enhanced.

もちろん、本発明の範囲は上記した実施形態に限定されるものではなく、特許請求の範囲に記載した事項の範囲内でのあらゆる設計変更はすべて本発明の範囲に含まれる。 Of course, the scope of the present invention is not limited to the above-described embodiment, and all design changes within the scope of the matters described in the claims are included in the scope of the present invention.

実施形態では、バンパ２００に突出部４００を形成したが、車両によっては、フェンダ１２０に設けることや、フロントヘッドランプの車幅方向外側のコーナ部に設けることも可能である。 In the embodiment, the protrusion 400 is formed on the bumper 200, but depending on the vehicle, it may be provided on the fender 120 or on the corner portion on the outer side of the front headlamp in the vehicle width direction.

さらに、図４に模式的に示すように、凹部２３０の奥部にフロントホイールハウス３００に通じる通気口２３２を設けた車両にも本発明を適用することができる。 Further, as schematically shown in FIG. 4, the present invention can also be applied to a vehicle provided with a vent 232 leading to the front wheel house 300 in the inner portion of the recess 230.

Ａ１ 車両前部構造
Ｆ 気流
１００ 車両
１１０ エンジンフード
１２０ フェンダ
１２１ 下縁（フェンダの）
２００ バンパ
２１０ コーナ部（バンパの）
２２０ バンパ側面部
２２１ 後端部（バンパ側面部の）
２３０ 凹部（フォグランプ配置用）
２３１ 縁部（凹部の）
２３２ 通気口
３００ フロントホイールハウス
３１０ 開口（フロントホイールハウスの）
４００ 突出部
４１０ 外面（突出部の）
４１１ 凸湾曲面（突出部の）
Ｔ 上下長さ（突出部の）
Ｌ 前方突出長さ（突出部の）
５００ 整流面
Ｐ 引張力 A1 Vehicle front structure F Airflow 100 Vehicle 110 Engine hood 120 Fender 121 Lower edge (of fender)
200 Bumpa 210 Corner part (of Bumpa)
220 Bumper side surface 221 Rear end (of the bumper side surface)
230 recess (for fog lamp placement)
231 Edge (concave)
232 Ventilation 300 Front Wheelhouse 310 Opening (of Front Wheelhouse)
400 Overhang 410 Outer surface (of the overhang)
411 Convex curved surface (of the protruding part)
T Vertical length (of the protruding part)
L Forward protrusion length (of the protrusion)
500 Rectifying surface P Tensile force

Claims (1)

車両前部の左右コーナ部において、
上記左右コーナ部の車幅方向幅領域内に、車両前方に突出し、かつ上下方向に延びる板状の突出部が形成されており、
上記突出部は、フロントホイールハウスの開口の上下高さ範囲と一部または全部が重なる高さ方向範囲に形成されていることを特徴とする、車両前部構造。 At the left and right corners of the front of the vehicle
In the width region of the left and right corners in the vehicle width direction, a plate-shaped protrusion that protrudes in front of the vehicle and extends in the vertical direction is formed.
The protrusion is a vehicle front structure characterized in that it is formed in a height range in which a part or all of the vertical height range of the opening of the front wheel house overlaps.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014233985A (en) * 2013-05-30 2014-12-15 トヨタ自動車株式会社 Car body surface structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014233985A (en) * 2013-05-30 2014-12-15 トヨタ自動車株式会社 Car body surface structure

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