JP2006248355A - Lift reduction device - Google Patents

Lift reduction device Download PDF

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Publication number
JP2006248355A
JP2006248355A JP2005066861A JP2005066861A JP2006248355A JP 2006248355 A JP2006248355 A JP 2006248355A JP 2005066861 A JP2005066861 A JP 2005066861A JP 2005066861 A JP2005066861 A JP 2005066861A JP 2006248355 A JP2006248355 A JP 2006248355A
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air guide
vehicle body
lift
air
lift reducing
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JP4591124B2 (en
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Daisuke Azuma
大輔 東
Hitoshi Fukuda
均 福田
Masahiro Yoshida
昌弘 吉田
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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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
    • 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
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure to restrain an air current flowing under a floor from a car body lower part side surface and to positively discharge the air current under the floor. <P>SOLUTION: Air guides 1, 2 to discharge air flowing in from a car body front lower surface to a car body lower part side surface and to restrain the air flowing in from the car body lower part side surface are provided on a car body lower surface. Additionally, a position in the car width direction of air guide front end parts 1a, 2a is set inside of a front wheel 10 and outside of a position of 25% of car width from the outside in the car width direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、自動車に作用する揚力を低減するための揚力低減装置に関する。   The present invention relates to a lift reducing device for reducing lift acting on an automobile.

従来、自動車の車体下部の構造として、図８に示すようにメインフロアカバー１２を設ける構造が知られている。これにより、床下は平坦になるため空気抵抗が低下し、車体下部中央部付近の空気の流れは真直ぐ車体後方へと流れるようになる。   Conventionally, a structure in which a main floor cover 12 is provided as shown in FIG. As a result, the floor becomes flat and the air resistance decreases, so that the air flow near the center of the lower part of the vehicle body flows straight to the rear of the vehicle body.

しかし、この構造では破線Ｃで示すような車体下部側面から床下に入り込む気流があるため、後輪１３及びリヤサスペンション１４等に衝突する気流が増加してしまう。このように、床下パーツに衝突する気流が増えることで床下の気圧が上昇し車体を持ち上げる力（揚力）が強くなり、車体の接地力が低下して操縦安定性能が低下してしまう。   However, in this structure, since there is an airflow entering the floor from the lower side of the vehicle body as indicated by the broken line C, the airflow that collides with the rear wheel 13 and the rear suspension 14 increases. As described above, when the airflow colliding with the underfloor parts increases, the underfloor pressure rises and the force to lift the vehicle body (lift) increases, and the grounding force of the vehicle body decreases and the steering stability performance deteriorates.

このため、フロントアンダーカバー１１下面に後方に開くようなＶ字状突起２２を設け、これにより生ずる縦渦の負圧により、下向きの力（ダウンフォース）を発生させる揚力低減装置が知られている。このような揚力低減装置の一例が下記特許文献１及び特許文献２に開示されている。   For this reason, there is known a lift reducing device that is provided with a V-shaped protrusion 22 that opens rearward on the lower surface of the front under cover 11 and generates a downward force (down force) due to the negative pressure of the vertical vortex generated thereby. . An example of such a lift reduction device is disclosed in Patent Literature 1 and Patent Literature 2 below.

実公平１−１５５７７号公報No. 1-15577 特開平８−１４２９２８号公報Japanese Patent Laid-Open No. 8-142928

しかしながら、上記特許文献１及び特許文献２に開示される車体下部構造では、車体下部側面から床下に流れ込む気流をなくすことができないため、この気流が床下の気流の圧力回復を助けてしまい、床下の圧力が上昇することにより揚力が発生し、車体の接地力が低下して操縦安定性能が低下してしまう。   However, in the vehicle body lower structure disclosed in Patent Document 1 and Patent Document 2 described above, since the airflow flowing from the lower surface of the vehicle body to the floor cannot be eliminated, this airflow helps the pressure recovery of the airflow under the floor, When the pressure rises, lift is generated, and the ground contact force of the vehicle body is lowered, and the steering stability performance is lowered.

これらのことから本発明は、車体下部側面から床下に流れ込む気流を抑制し、さらに床下の気流を車体下部側面に積極的に排出する揚力低減装置を提供することを目的とする。   Accordingly, it is an object of the present invention to provide a lift reduction device that suppresses airflow flowing under the floor from the lower side surface of the vehicle body and actively discharges the airflow under the floor to the lower side surface of the vehicle body.

上記の課題を解決する第１の発明（請求項１に対応）に係る揚力低減装置は、車体下面に、車体前方下面から流入する空気を車体下部側面へ排出しかつ車体下部側面から流入する空気を抑制するエアガイドを設けることを特徴とする。   A lift reducing apparatus according to a first aspect of the present invention (corresponding to claim 1) that solves the above-described problem is that air flowing into the lower surface of the vehicle body from the lower front surface of the vehicle body is discharged to the lower side surface of the vehicle body and flows into the lower surface of the vehicle body It is characterized by providing an air guide that suppresses the above.

上記の課題を解決する第２の発明（請求項２に対応）に係る揚力低減装置は、第１の発明に係る揚力低減装置において、前記エアガイド前端部の車幅方向での位置を、前輪より内側、かつ車体側端から車幅の２５パーセントの位置よりも外側とすることを特徴とする。   A lift reducing apparatus according to a second invention (corresponding to claim 2) that solves the above problem is the lift reducing apparatus according to the first invention, wherein the position of the front end portion of the air guide in the vehicle width direction is set to a front wheel. It is characterized in that it is located on the inner side and on the outer side from the position of 25% of the vehicle width from the vehicle body side end.

上記の課題を解決する第３の発明（請求項３に対応）に係る揚力低減装置は、第１の発明又は第２の発明に係る揚力低減装置において、前記エアガイドを複数設け、後方にあるエアガイドの前端部の位置を、前方にあるエアガイドの前端部の位置より内側とすることを特徴とする。   A lift reducing apparatus according to a third invention (corresponding to claim 3) that solves the above problem is the lift reducing apparatus according to the first invention or the second invention. The position of the front end portion of the air guide is set inside the position of the front end portion of the air guide at the front.

上記の課題を解決する第４の発明（請求項４に対応）に係る揚力低減装置は、第１の発明ないし第３の発明のいずれかに係る揚力低減装置において、前記エアガイドは外力により変形し、かつ外力がなくなると復元するものであることを特徴とする。   A lift reducing device according to a fourth invention (corresponding to claim 4) that solves the above problem is the lift reducing device according to any one of the first to third inventions, wherein the air guide is deformed by an external force. However, it is restored when the external force is lost.

上記の課題を解決する第５の発明（請求項５に対応）に係る揚力低減装置は、第１の発明ないし第４の発明のいずれかに係る揚力低減装置において、前記エアガイドの材質をゴムとすることを特徴とする。   A lift reducing apparatus according to a fifth invention (corresponding to claim 5) for solving the above-described problems is the lift reducing apparatus according to any one of the first to fourth inventions, wherein the material of the air guide is rubber. It is characterized by.

上記の課題を解決する第６の発明（請求項６に対応）に係る揚力低減装置は、第１の発明ないし第５の発明のいずれかに係る揚力低減装置において、前記エアガイドの形状を前方から後方に向けて開く八字状とすることを特徴とする。   A lift reducing apparatus according to a sixth invention (corresponding to claim 6) that solves the above problem is the lift reducing apparatus according to any one of the first to fifth inventions, wherein the shape of the air guide is set to the front. It is characterized by an eight-letter shape that opens from the rear to the rear.

上記の課題を解決する第７の発明（請求項７に対応）に係る揚力低減装置は、第１の発明ないし第６の発明のいずれかに係る揚力低減装置において、前記エアガイドの形状を前方から後方に向けて開く八字状とし、かつ後端部を車幅方向に対しほぼ平行にすることを特徴とする。つまり、エアガイドの形状を略Ｌ字状（略逆Ｌ字状）とするのである。   A lift reducing apparatus according to a seventh invention (corresponding to claim 7) that solves the above problem is the lift reducing apparatus according to any one of the first to sixth inventions, wherein the shape of the air guide is set to the front. It is characterized by an eight-letter shape that opens from the rear toward the rear, and the rear end portion being substantially parallel to the vehicle width direction. That is, the shape of the air guide is substantially L-shaped (substantially inverted L-shaped).

上記の課題を解決する第８の発明（請求項８に対応）に係る揚力低減装置は、第１の発明ないし第７の発明のいずれかに係る揚力低減装置において、前記エアガイドの形状を前方から後方に向けて開く八字状とし、かつ前端部から後端部に至る途中で湾曲方向を変えてあることを特徴とする。つまり、エアガイドの形状を略Ｓ字状（略逆Ｓ字状）とするのである。   A lift reducing apparatus according to an eighth invention (corresponding to claim 8) that solves the above problem is the lift reducing apparatus according to any one of the first to seventh inventions, wherein the shape of the air guide is set to the front. It is characterized by an eight-letter shape that opens from the rear toward the rear, and the bending direction is changed in the middle from the front end to the rear end. That is, the shape of the air guide is substantially S-shaped (substantially inverted S-shaped).

上記の課題を解決する第９の発明（請求項９に対応）に係る揚力低減装置は、第１の発明ないし第８の発明のいずれかに係る揚力低減装置において、前記エアガイドと車体下面のカバーを一体とすることを特徴とする。   A lift reducing apparatus according to a ninth invention (corresponding to claim 9) for solving the above-described problems is the lift reducing apparatus according to any one of the first to eighth inventions, wherein the air guide and the lower surface of the vehicle body are provided. The cover is integrated.

第１の発明によれば、車体下面に、車体前方下面から流入する空気を車体下部側面へ排出しかつ車体下部側面から流入する空気を抑制するエアガイドを設けることにより、後輪及びリヤサスペンション等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができる。これにより、床下パーツに衝突する気流の増加を防ぐことができるので、床下の気圧の上昇を防ぎ、揚力を抑制することができる。   According to the first invention, by providing an air guide on the lower surface of the vehicle body for discharging air flowing from the lower front surface of the vehicle body to the lower side surface of the vehicle body and suppressing air flowing from the lower side surface of the vehicle body, the rear wheel, the rear suspension, etc. The turbulent airflow that collides with the vehicle can be more actively discharged to the lower side surface of the vehicle body. Thereby, since the increase of the airflow which collides with underfloor parts can be prevented, the raise of the atmospheric pressure under the floor can be prevented and lift can be suppressed.

第２の発明によれば、エアガイド前端部の車幅方向での位置を、前輪より内側、かつ車体側端から車幅の２５パーセントの位置よりも外側とすることにより、後輪及びリヤサスペンション等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができる。これにより、床下パーツに衝突する気流の増加を防ぐことができるので、床下の気圧の上昇を防ぎ、揚力を抑制することができる。   According to the second invention, the position of the front end portion of the air guide in the vehicle width direction is set inside the front wheel and outside the position of 25% of the vehicle width from the vehicle body side end. The turbulent airflow that collides with the vehicle can be more actively discharged to the lower side of the vehicle body. Thereby, since the increase of the airflow which collides with underfloor parts can be prevented, the raise of the atmospheric pressure under the floor can be prevented and lift can be suppressed.

第３の発明によれば、エアガイドを複数設け、後方にあるエアガイドの前端部の位置を、前方にあるエアガイドの前端部の位置より内側とすることにより、後輪及びリヤサスペンション等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができる。これにより、床下パーツに衝突する気流の増加を防ぐことができるので、床下の気圧の上昇を防ぎ、揚力を抑制することができる。   According to the third invention, a plurality of air guides are provided, and the position of the front end portion of the air guide at the rear is located inside the position of the front end portion of the air guide at the front, so that the rear wheel, the rear suspension, etc. The colliding turbulent airflow can be discharged more actively to the lower side of the vehicle body. Thereby, since the increase of the airflow which collides with underfloor parts can be prevented, the raise of the atmospheric pressure under the floor can be prevented and lift can be suppressed.

第４の発明及び第５の発明によれば、エアガイドは外力により変形し、かつ外力がなくなると復元するものであることにより、エアガイドが地面と接触したときに破損することを防ぎ、エアガイドの高さを限界まで高くすることができる。   According to the fourth and fifth aspects of the invention, the air guide is deformed by an external force and is restored when the external force disappears, thereby preventing the air guide from being damaged when it comes into contact with the ground. The height of the guide can be increased to the limit.

第６の発明によれば、エアガイドの形状を前方から後方に向けて開く八字状とすることにより、後輪及びリヤサスペンション等に衝突する乱れた気流を積極的に車体下部側面へ排出することができる。これにより、床下パーツに衝突する気流の増加を防ぐことができるので、床下の気圧の上昇を防ぎ、揚力を抑制することができる。   According to the sixth aspect of the invention, the turbulent airflow that collides with the rear wheels, the rear suspension, etc. is positively discharged to the lower side surface of the vehicle body by forming the shape of the air guide into an eight shape that opens from the front to the rear. Can do. Thereby, since the increase of the airflow which collides with underfloor parts can be prevented, the raise of the atmospheric pressure under the floor can be prevented and lift can be suppressed.

第７の発明によれば、エアガイドの形状を前方から後方に向けて開く八字状とし、かつ後端部を車幅方向に対しほぼ平行にすることにより、後輪及びリヤサスペンション等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができ、揚力を低減できる。この効果は、車速の２乗に比例するため、高速度域ほど有効になる。   According to the seventh invention, the shape of the air guide is an eight-letter shape that opens from the front to the rear, and the rear end is made substantially parallel to the vehicle width direction, thereby colliding with the rear wheel and the rear suspension. Disturbed airflow can be discharged more actively to the lower side of the vehicle body, and lift can be reduced. Since this effect is proportional to the square of the vehicle speed, the higher the speed range, the more effective.

第８の発明によれば、前記エアガイドの形状を前方から後方に向けて開く八字状とし、かつ前端部から後端部に至る途中で湾曲方向を変えてあることにより、後輪及びリヤサスペンション等に衝突する乱れた気流を積極的に車体下部側面へ排出することができる。また、エアガイド後端部の形状が空気の流れを妨げないように気流に沿った形状となっている。このため、エアガイドのＣD（空気抵抗係数）を低減することができる。 According to the eighth invention, the shape of the air guide is an eight-letter shape that opens from the front to the rear, and the curve direction is changed in the middle from the front end to the rear end. The turbulent airflow that collides with the vehicle can be positively discharged to the lower surface of the vehicle body. Further, the shape of the rear end portion of the air guide is a shape along the airflow so as not to disturb the air flow. For this reason, C D (air resistance coefficient) of the air guide can be reduced.

さらに、エアガイド後端部が前後方向に延びる縦壁となっている。このため従来の車体下部構造のように車体下部側面から侵入する気流を排出する気流と縦壁により防ぐことができる。これにより、低速度で走行しているときでも床下パーツに衝突する気流の増加を防ぐことができるので、低速度域であっても揚力を抑制することができる。   Further, the rear end portion of the air guide is a vertical wall extending in the front-rear direction. For this reason, like the conventional vehicle body lower structure, it can be prevented by the air flow and the vertical wall that discharge the air flow entering from the vehicle body lower side surface. Thereby, even when the vehicle is traveling at a low speed, it is possible to prevent an increase in the airflow that collides with the underfloor parts, so that it is possible to suppress lift even in the low speed region.

第９の発明によれば、エアガイドと車体下面のカバーを一体とすることにより、エアガイドの強度を高め、かつ部品点数が少なくなることにより、取り付けの際の労力を軽減し、コスト低減することができる。   According to the ninth aspect of the present invention, the strength of the air guide is increased by integrating the air guide and the cover on the lower surface of the vehicle body, and the number of parts is reduced, thereby reducing the labor for installation and reducing the cost. be able to.

本発明に係る揚力低減装置を図１から図８を用いて説明する。図１は本発明に係る揚力低減装置を装着した車両の斜視図、図２は本発明に係る揚力低減装置を装着した車両の側面図、図３は実施例１に係る揚力低減装置の平面図、図４は実施例２に係る揚力低減装置の平面図、図５は実施例３に係る揚力低減装置の平面図、図６は図３に示すＡ−Ａ断面での断面図、図７はエアガイド前端部設置位置におけるＣDの特性を表すグラフである。図中、Ｆｒは車体前方方向、Ｉｎは車体内側方向、Ｕｐは車体上方方向を示す。 A lift reducing apparatus according to the present invention will be described with reference to FIGS. 1 is a perspective view of a vehicle equipped with a lift reducing device according to the present invention, FIG. 2 is a side view of the vehicle equipped with a lift reducing device according to the present invention, and FIG. 3 is a plan view of the lift reducing device according to the first embodiment. 4 is a plan view of the lift reducing device according to the second embodiment, FIG. 5 is a plan view of the lift reducing device according to the third embodiment, FIG. 6 is a sectional view taken along the line AA shown in FIG. 3, and FIG. is a graph showing the characteristics of the C D in the air guide front end installation position. In the figure, Fr indicates the vehicle body front direction, In indicates the vehicle body inner side direction, and Up indicates the vehicle body upward direction.

図１に示すように、自動車の車体下部にはエンジンルーム２０（図２参照）及びフロントバンパー２１（図２参照）下部の左右の前輪１０の間に大型フロントアンダーカバー１１が設置されている。この大型フロントアンダーカバー１１の後方の車体下面にはメインフロアカバー１２が設置されている。   As shown in FIG. 1, a large front under cover 11 is installed between the left and right front wheels 10 below the engine room 20 (see FIG. 2) and the front bumper 21 (see FIG. 2) at the lower part of the vehicle body. A main floor cover 12 is installed on the lower surface of the vehicle body behind the large front under cover 11.

四輪駆動車及び後輪駆動車の場合、エンジンルーム２０から後方に動力を後輪に伝達するためのプロペラシャフト１８（図３参照）が配置される。プロペラシャフト１８の後端にはリヤデフ１９（図３参照）が設置されている。リヤデフ１９の左右には後輪１３が設置されている。後輪１３の内側にはリヤサスペンション１４が設置されている。   In the case of a four-wheel drive vehicle and a rear wheel drive vehicle, a propeller shaft 18 (see FIG. 3) for transmitting power to the rear wheels from the engine room 20 is disposed rearward. A rear differential 19 (see FIG. 3) is installed at the rear end of the propeller shaft 18. Rear wheels 13 are installed on the left and right of the rear differential 19. A rear suspension 14 is installed inside the rear wheel 13.

また、エンジンルーム２０から後方に延びるように排気管１５が設置されている。この排気管１５の後端にはメインマフラー１６が設置されている。このメインマフラー１６にはエキゾーストパイプ１７が設置されている。   An exhaust pipe 15 is installed so as to extend rearward from the engine room 20. A main muffler 16 is installed at the rear end of the exhaust pipe 15. An exhaust pipe 17 is installed on the main muffler 16.

図３に示すように、本実施例に係る揚力低減装置は車体下面に設けられる。エアガイド１，２の形状は下方から見た場合、前方から後方に向けて開く略八字状になっている。エアガイド１，２は左右対称であり、一対のものを前後に二対設置する。ここでは前方のエアガイド１を第１エアガイド１とし、後方のエアガイド２を第２エアガイド２とする。また、本実施例では一例として二対のエアガイド１，２を設置したが、エアガイド１，２の設置数は必要に応じて増減してもよい。   As shown in FIG. 3, the lift reducing apparatus according to this embodiment is provided on the lower surface of the vehicle body. When viewed from below, the air guides 1 and 2 have an approximately eight-letter shape that opens from the front to the rear. The air guides 1 and 2 are bilaterally symmetric, and two pairs are installed in the front and rear. Here, the front air guide 1 is a first air guide 1 and the rear air guide 2 is a second air guide 2. In this embodiment, two pairs of air guides 1 and 2 are installed as an example, but the number of installed air guides 1 and 2 may be increased or decreased as necessary.

エアガイド前端部１ａ，２ａの設置位置は、前輪よりも内側で、かつ車体側端から車幅のほぼ２５％以内の図中αで示す範囲内とする。これは図７で示すように、エアガイド前端部１ａ，２ａの設置位置が車幅方向外側から車幅のほぼ２５％を越えた辺りから、急激にＣD（空気抵抗係数）が上昇してしまうためである。 The installation positions of the air guide front end portions 1a and 2a are set within the range indicated by α in the drawing, which is on the inner side of the front wheels and within approximately 25% of the vehicle width from the vehicle body side end. As shown in FIG. 7, when the installation position of the air guide front end portions 1a, 2a exceeds approximately 25% of the vehicle width from the outside in the vehicle width direction, C D (air resistance coefficient) suddenly increases. It is because it ends.

エアガイド前端部１ａ，２ａの設置位置が車幅方向外側から車幅の２５％付近で、ＣDは０．０１程度となる。また、エアガイド前端部１ａ，２ａの設置位置を前輪の内側よりも外側、すなわち前輪の後方とした場合、車体下部側面に気流を排出する効果が十分に得られなくなる。 When the installation position of the air guide front end portions 1a, 2a is around 25% of the vehicle width from the outside in the vehicle width direction, CD is about 0.01. Further, when the air guide front end portions 1a and 2a are installed outside the front wheels, that is, behind the front wheels, the effect of exhausting the airflow to the lower surface of the vehicle body cannot be sufficiently obtained.

エアガイド後端部１ｂ，２ｂの設置位置は車体側端部とし、車体からはみ出さないようにする。第２エアガイド前端部２ａの車幅方向での設置位置は第１エアガイド前端部１ａの設置位置より内側とする。   The installation positions of the air guide rear end portions 1b and 2b are the end portions on the vehicle body side so as not to protrude from the vehicle body. The installation position of the second air guide front end 2a in the vehicle width direction is set to the inside of the installation position of the first air guide front end 1a.

エアガイド１，２はメインフロアカバー１２の下面にボルト又はクリップ等により結合する。本実施例では一例としてメインフロアカバー１２の下面に設置したが、メインフロアカバー１２が取り付けられていない車体の場合は、車体下面に直接ボルト又はクリップ等により結合してもよい。   The air guides 1 and 2 are coupled to the lower surface of the main floor cover 12 by bolts or clips. In this embodiment, it is installed on the lower surface of the main floor cover 12 as an example. However, in the case of a vehicle body to which the main floor cover 12 is not attached, it may be directly coupled to the lower surface of the vehicle body with bolts or clips.

エアガイド１，２の高さｈ（図６）は高いほどよいが、高すぎると地面と接触してしまうおそれがある。車体の種類によって車体下面の地上高が異なるため、最適なエアガイド１，２の高さｈは車体下面の地上高により異なるが、一例としてエアガイド１，２の高さｈは５０ミリメートル程度である。   The height h (FIG. 6) of the air guides 1 and 2 is preferably as high as possible. However, if the height is too high, the air guides 1 and 2 may come into contact with the ground. Since the ground height of the lower surface of the vehicle body differs depending on the type of the vehicle body, the optimum height h of the air guides 1 and 2 varies depending on the ground height of the lower surface of the vehicle body. is there.

エアガイド１，２は地面及び縁石等と接触してしまった場合を考慮し、地面及び縁石等と接触した際にはエアガイド１，２は外力により変形し、かつ外力がなくなると復元するようにする。このような機能を実現するため、エアガイド１，２はゴム等の樹脂製素材を用いて作製する。   Considering the case where the air guides 1 and 2 are in contact with the ground and curbstones, the air guides 1 and 2 are deformed by external force when they are in contact with the ground and curbstones, and are restored when the external force is lost. To. In order to realize such a function, the air guides 1 and 2 are manufactured using a resin material such as rubber.

本実施例に係る揚力低減装置によれば、破線Ｄ（図３）で示すように、後輪１３及びリヤサスペンション１４等に衝突する乱れた気流を積極的に車体下部側面へ排出することができる。このため従来の車体下部構造のように車体下部側面から侵入する破線Ｃ（図８）で示す気流を防ぐことができる。   According to the lift reducing apparatus according to the present embodiment, as shown by the broken line D (FIG. 3), the turbulent airflow that collides with the rear wheel 13 and the rear suspension 14 can be positively discharged to the lower side surface of the vehicle body. . For this reason, it is possible to prevent the air flow indicated by the broken line C (FIG. 8) entering from the side surface of the lower part of the vehicle body as in the conventional lower body structure.

これにより、床下パーツに衝突する気流の増加を防ぐことができるので、床下の気圧の上昇を防ぎ、揚力を抑制することができる。また、破線Ｂで示す車体中央部付近の気流については車体下部側面へ排出されないが、この気流は流れの整った気圧の低い気流であり揚力への影響が少ないため問題としない。   Thereby, since the increase of the airflow which collides with underfloor parts can be prevented, the raise of the atmospheric pressure under the floor can be prevented and lift can be suppressed. In addition, the air current in the vicinity of the center of the vehicle body indicated by the broken line B is not discharged to the lower side surface of the vehicle body.

本実施例では実施例１の揚力低減装置の形状を、後輪１３及びリヤサスペンション１４等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができる形状とした。   In this embodiment, the lift reducing device of the first embodiment is shaped so that the turbulent airflow that collides with the rear wheel 13 and the rear suspension 14 can be more actively discharged to the lower side surface of the vehicle body.

図４に示すように、本実施例に係る揚力低減装置は車体下面に設けられる。エアガイド３，４の形状は下方から見た場合、前方から後方に向けて開く八字状になっており、かつエアガイド後端部３ｂ，４ｂが車幅方向に対しほぼ平行になっている。つまり、略Ｌ字状（略逆Ｌ字状）とするのである。   As shown in FIG. 4, the lift reducing apparatus according to this embodiment is provided on the lower surface of the vehicle body. When viewed from below, the shape of the air guides 3 and 4 is an eight shape that opens from the front to the rear, and the air guide rear end portions 3b and 4b are substantially parallel to the vehicle width direction. That is, the shape is substantially L-shaped (substantially inverted L-shaped).

エアガイド３，４は左右対称であり、一対のものを前後に二対設置する。ここでは前方のエアガイド３を第１エアガイド３とし、後方のエアガイド４を第２エアガイド４とする。また、本実施例では一例として二対のエアガイド３，４を設置したが、エアガイド３，４の設置数は必要に応じて増減してもよい。   The air guides 3 and 4 are symmetrical, and two pairs of the air guides are installed in the front and rear. Here, the front air guide 3 is a first air guide 3 and the rear air guide 4 is a second air guide 4. In this embodiment, two pairs of air guides 3 and 4 are installed as an example, but the number of installed air guides 3 and 4 may be increased or decreased as necessary.

エアガイド前端部３ａ，４ａ設置位置は、前輪よりも内側、かつ車体側端から車幅のほぼ２５パーセント以内の図中αで示す範囲内とする。また、エアガイド後端部３ｂ，４ｂの設置位置は車体側端部とする。第２エアガイド前端部４ａの車幅方向での設置位置は第１エアガイド前端部３ａの設置位置より内側とする。   The installation positions of the air guide front end portions 3a and 4a are within the range indicated by α in the drawing, which is inside the front wheel and within approximately 25% of the vehicle width from the vehicle body side end. The installation positions of the air guide rear end portions 3b and 4b are the vehicle body side end portions. The installation position of the second air guide front end 4a in the vehicle width direction is set to the inner side of the installation position of the first air guide front end 3a.

本実施例に係る揚力低減装置によれば、図４中の破線Ｅで示すように、後輪１３及びリヤサスペンション１４等に衝突する乱れた気流をより積極的に車体下部側面へ排出することができる。従来の車体下部構造のように車体下部側面から侵入する破線Ｃ（図８）で示す気流をより防ぐことで得られる揚力低減効果は高速度域ほど顕著になる。   According to the lift reducing apparatus according to the present embodiment, as shown by a broken line E in FIG. 4, the turbulent airflow colliding with the rear wheel 13 and the rear suspension 14 can be more actively discharged to the lower side surface of the vehicle body. it can. The lift reduction effect obtained by further preventing the air flow indicated by the broken line C (FIG. 8) entering from the lower side surface of the vehicle body as in the conventional lower body structure becomes more significant as the speed increases.

このように、床下パーツに衝突する気流の増加を防ぐことができ、高速度域になるほど揚力を抑制することができる。また、破線Ｂで示す車体中央部付近の気流については車体下部側面へ排出されないが、この気流は流れの整った気圧の低い気流であり揚力への影響が少ないため問題としない。   Thus, the increase of the airflow which collides with underfloor parts can be prevented, and lift can be suppressed, so that it becomes a high speed area. In addition, the air current in the vicinity of the center of the vehicle body indicated by the broken line B is not discharged to the lower side surface of the vehicle body.

本実施例では実施例１の揚力低減装置の形状を、後輪１３及びリヤサスペンション１４等に衝突する乱れた気流を積極的に車体下部側面へ排出し、かつエアガイド５，６のＣDがより低くなる形状とした。 The shape of the lift reduction device of Example 1 in the present embodiment, discharged to actively underbody side a turbulent air flow that impinges on the rear wheel 13 and the rear suspension 14 or the like, and the C D of the air guide 5 and 6 The shape is lower.

図５に示すように、本実施例に係る揚力低減装置は車体下面に設けられる。エアガイド５，６の形状は下方から見た場合、前方から後方に向けて開く八字状になっており、かつ前端部５ａ，６ａから後端部５ｂ，６ｂに至る途中で湾曲方向を変えてある。つまり、全体として略Ｓ字状（略逆Ｓ字状）となっているのである。   As shown in FIG. 5, the lift reducing apparatus according to the present embodiment is provided on the lower surface of the vehicle body. When viewed from below, the air guides 5 and 6 have an eight-letter shape that opens from the front to the rear, and change the bending direction in the middle from the front ends 5a and 6a to the rear ends 5b and 6b. is there. That is, it is substantially S-shaped (substantially inverted S-shaped) as a whole.

エアガイド５，６は左右対称であり、一対のものを前後に二対設置する。ここでは前方のエアガイド５を第１エアガイド５とし、後方のエアガイド６を第２エアガイド６とする。また、本実施例では一例として二対のエアガイド５，６を設置したが、エアガイド５，６の設置数は必要に応じて増減してもよい。   The air guides 5 and 6 are symmetrical, and two pairs of the air guides are installed in the front and rear. Here, the front air guide 5 is the first air guide 5, and the rear air guide 6 is the second air guide 6. In this embodiment, two pairs of air guides 5 and 6 are installed as an example, but the number of air guides 5 and 6 may be increased or decreased as necessary.

エアガイド前端部５ａ，６ａ設置位置は、前輪よりも内側で、かつ車体側端から車幅のほぼ２５パーセント以内の図中αで示す範囲内とする。また、エアガイド後端部５ｂ，６ｂの設置位置は車体側端部とする。第２エアガイド前端部６ａの車幅方向での設置位置は第１エアガイド前端部５ａの設置位置より内側とする。   The installation positions of the air guide front end portions 5a and 6a are within the range indicated by α in the drawing, which is on the inner side of the front wheels and within approximately 25% of the vehicle width from the vehicle body side end. The installation positions of the air guide rear end portions 5b and 6b are the vehicle body side end portions. The installation position of the second air guide front end 6a in the vehicle width direction is set to the inner side of the installation position of the first air guide front end 5a.

本実施例に係る揚力低減装置によれば、図５中の破線Ｆで示すように、後輪１３及びリヤサスペンション１４等に衝突する乱れた気流を積極的に車体下部側面へ排出することができる。また、エアガイド後端部５ｂ，６ｂの形状が空気の流れを妨げないように気流に沿った形状となっている。このため、エアガイド５，６のＣDを低減することができる。 According to the lift reducing apparatus according to the present embodiment, as shown by the broken line F in FIG. 5, the turbulent airflow that collides with the rear wheel 13 and the rear suspension 14 can be positively discharged to the lower side surface of the vehicle body. . Moreover, the shape of the air guide rear end portions 5b and 6b is a shape along the air flow so as not to disturb the air flow. Therefore, it is possible to reduce the C D of the air guide 5 and 6.

さらに、エアガイド後端部５ｂ，６ｂが前後方向に延びる縦壁となっている。このため、従来の車体下部構造のように車体下部側面から侵入する破線Ｃ（図８）で示す気流を、排出する気流と縦壁により防ぐことができる。   Further, the air guide rear end portions 5b and 6b are vertical walls extending in the front-rear direction. For this reason, the airflow shown with the broken line C (FIG. 8) which penetrate | invades from the vehicle body lower side surface like the conventional vehicle body lower part structure can be prevented by the discharged airflow and the vertical wall.

これにより、床下パーツに衝突する気流の増加を防ぐと共に、車両側面の流れの乱れを抑えることができるため、ＣDの上昇を小さく抑えつつ揚力を低減することができる。また、破線Ｂで示す車体中央部付近の気流については車体下部側面へ排出されないが、この気流は流れの整った気圧の低い気流であり揚力への影響が少ないため問題としない。 Thus, while preventing an increase in the air flow impinging on the floor parts, it is possible to suppress the disturbance of the flow of the vehicle side, it is possible to reduce the lift while suppressing small increase of C D. In addition, the air current in the vicinity of the center of the vehicle body indicated by the broken line B is not discharged to the lower side surface of the vehicle body.

本発明は、高速走行時に問題となる揚力を低減し、スポーツ走行時における機動性及び通常の高速走行時における安全性の向上を図る場合に有効である。   The present invention is effective for reducing lift, which is a problem during high-speed driving, and improving mobility during sports driving and safety during normal high-speed driving.

本発明に係る揚力低減装置を装着した車両の斜視図である。1 is a perspective view of a vehicle equipped with a lift reducing device according to the present invention. 本発明に係る揚力低減装置を装着した車両の側面図である。1 is a side view of a vehicle equipped with a lift reducing device according to the present invention. 実施例１に係る揚力低減装置の平面図である。1 is a plan view of a lift reducing apparatus according to Embodiment 1. FIG. 実施例２に係る揚力低減装置の平面図である。6 is a plan view of a lift reducing apparatus according to Embodiment 2. FIG. 実施例３に係る揚力低減装置の平面図である。10 is a plan view of a lift reducing device according to Embodiment 3. FIG. 図３に示すＡ−Ａ断面での断面図である。It is sectional drawing in the AA cross section shown in FIG. エアガイド前端部設置位置におけるＣDの特性を表すグラフである。Is a graph showing the characteristics of the C D in the air guide front end installation position. 従来の車両下部構造の平面図である。It is a top view of the conventional vehicle lower part structure.

符号の説明Explanation of symbols

１，２ 略八字状エアガイド
１ａ，２ａ 略八字状エアガイド前端部
１ｂ，２ｂ 略八字状エアガイド後端部
３，４ 略Ｌ字状（略逆Ｌ字状）エアガイド
３ａ，４ａ 略Ｌ字状（略逆Ｌ字状）エアガイド前端部
３ｂ，４ｂ 略Ｌ字状（略逆Ｌ字状）エアガイド後端部
５，６ 略Ｓ字状（略逆Ｓ字状）エアガイド
５ａ，６ａ 略Ｓ字状（略逆Ｓ字状）エアガイド前端部
５ｂ，６ｂ 略Ｓ字状（略逆Ｓ字状）エアガイド後端部
１０ 前輪
１１ 大型フロントアンダーカバー
１２ メインフロアカバー
１３ 後輪
１４ リヤサスペンション
１５ 排気管
１６ メインマフラー
１７ エキゾーストパイプ
１８ プロペラシャフト
１９ リヤデフ
２０ エンジンルーム
２１ フロントバンパー
２２ Ｖ字状突起 1, 2 Approximately eight-shaped air guides 1a, 2a Approximately eight-shaped air guide front ends 1b, 2b Approximately eight-shaped air guide rear ends 3, 4 Approximate L-shaped (substantially inverted L-shaped) air guides 3a, 4a Approx L Character-shaped (substantially inverted L-shaped) air guide front end portions 3b, 4b substantially L-shaped (substantially inverted L-shaped) air guide rear end portions 5, 6 substantially S-shaped (substantially inverted S-shaped) air guide 5a, 6a substantially S-shaped (substantially inverted S-shaped) air guide front end 5b, 6b substantially S-shaped (substantially inverted S-shaped) air guide rear end 10 front wheel 11 large front under cover 12 main floor cover 13 rear wheel 14 Rear suspension 15 Exhaust pipe 16 Main muffler 17 Exhaust pipe 18 Propeller shaft 19 Rear differential 20 Engine room 21 Front bumper 22 V-shaped projection

Claims (9)

車体下面に、車体前方下面から流入する空気を車体下部側面へ排出しかつ車体下部側面から流入する空気を抑制するエアガイドを設ける
ことを特徴とする揚力低減装置。 A lift reducing device, characterized in that an air guide is provided on a lower surface of a vehicle body to discharge air flowing from a lower front surface of the vehicle body to a lower side surface of the vehicle body and suppress air flowing from the lower side surface of the vehicle body. 請求項１に記載する揚力低減装置において、
前記エアガイド前端部の車幅方向での位置を、前輪より内側、かつ車体側端から車幅の２５パーセントの位置よりも外側とする
ことを特徴とする揚力低減装置。 The lift reducing apparatus according to claim 1,
The position of the front end portion of the air guide in the vehicle width direction is on the inner side of the front wheel and on the outer side of the position of 25% of the vehicle width from the vehicle body side end. 請求項１又は請求項２に記載する揚力低減装置において、
前記エアガイドを複数設け、後方にあるエアガイドの前端部の位置を、前方にあるエアガイドの前端部の位置より内側とする
ことを特徴とする揚力低減装置。 In the lift reducing apparatus according to claim 1 or 2,
A lift reducing apparatus, wherein a plurality of the air guides are provided, and the position of the front end portion of the air guide at the rear is located inside the position of the front end portion of the air guide at the front. 請求項１ないし請求項３のいずれかに記載する揚力低減装置において、
前記エアガイドは外力により変形し、かつ外力がなくなると復元するものである
ことを特徴とする揚力低減装置。 In the lift reducing apparatus according to any one of claims 1 to 3,
The air guide is deformed by an external force and is restored when the external force is lost. 請求項４に記載する揚力低減装置において、
前記エアガイドの材質をゴムとする
ことを特徴とする揚力低減装置。 The lift reducing apparatus according to claim 4,
A lift reducing device, wherein the air guide is made of rubber. 請求項１ないし請求項５のいずれかに記載する揚力低減装置において、
前記エアガイドの形状を前方から後方に向けて開く八字状とする
ことを特徴とする揚力低減装置。 In the lift reducing apparatus according to any one of claims 1 to 5,
A lift reducing device, wherein the shape of the air guide is an eight-letter shape that opens from the front toward the rear. 請求項１ないし請求項６のいずれかに記載する揚力低減装置において、
前記エアガイドの形状を前方から後方に向けて開く八字状とし、かつ後端部を車幅方向に対しほぼ平行にする
ことを特徴とする揚力低減装置。 In the lift reducing apparatus according to any one of claims 1 to 6,
A lift reducing device characterized in that the shape of the air guide is an eight-letter shape that opens from the front to the rear, and the rear end portion is substantially parallel to the vehicle width direction. 請求項１ないし請求項７のいずれかに記載する揚力低減装置において、
前記エアガイドの形状を前方から後方に向けて開く八字状とし、かつ前端部から後端部に至る途中で湾曲方向を変えてある
ことを特徴とする揚力低減装置。 In the lift reducing device according to any one of claims 1 to 7,
A lift reducing device, wherein the shape of the air guide is an eight-letter shape that opens from the front to the rear, and the bending direction is changed in the middle from the front end to the rear end. 請求項１ないし請求項７のいずれかに記載する揚力低減装置において、
前記エアガイドと車体下面のカバーを一体とする
ことを特徴とする揚力低減装置。 In the lift reducing device according to any one of claims 1 to 7,
A lift reducing apparatus, wherein the air guide and a cover on a lower surface of the vehicle body are integrated.
JP2005066861A 2005-03-10 2005-03-10 Lift reduction device Expired - Fee Related JP4591124B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007062681A (en) * 2005-09-02 2007-03-15 Honda Motor Co Ltd Lower bodywork of vehicle
JP2007118750A (en) * 2005-10-27 2007-05-17 West Japan Railway Co Method and device for reducing traveling wind under floor of railroad vehicle
EP2439131A1 (en) 2010-10-06 2012-04-11 Honda Motor Co., Ltd. Air guide plate for the underside of a motor vehicle
JP2014054958A (en) * 2012-09-13 2014-03-27 Toyota Motor Corp Vehicle lower part structure
KR101583920B1 (en) 2014-05-02 2016-01-13 현대자동차주식회사 Front spoiler apparatus for vehicle
KR101584684B1 (en) 2014-04-30 2016-01-13 서울대학교산학협력단 Aerodynamic drag reduction device for under part of vehicle
JP2016150742A (en) * 2015-02-19 2016-08-22 トヨタ自動車株式会社 Vehicle having air flow path in vehicle body side face
JP2018030379A (en) * 2016-08-22 2018-03-01 マツダ株式会社 Flow straightening structure for vehicle lower part
US10040492B2 (en) 2016-11-15 2018-08-07 Hyundai Motor Company Variable spoiler apparatus of rear bumper for vehicle
US10266214B2 (en) 2016-11-15 2019-04-23 Hyundai Motor Company Variable spoiler apparatus of rear bumper for vehicle
US10300966B2 (en) 2016-11-15 2019-05-28 Hyundai Motor Company Variable rear spoiler apparatus of rear bumper for vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524717B1 (en) * 2013-10-31 2015-06-02 손현우 A Under Body Full Cover for Vehicle
KR101524720B1 (en) * 2013-10-31 2015-06-02 손현우 A Under Body Full Cover for Vehicle
US10457341B2 (en) * 2018-03-21 2019-10-29 GM Global Technology Operations LLC Underbody channel vortex generators

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1216429A (en) * 1968-04-18 1970-12-23 Daimler Benz Ag Improvements relating to vehicles
DE3712048A1 (en) * 1987-04-09 1988-10-27 Bayerische Motoren Werke Ag Device for reducing lift in vehicles
JPS6422583U (en) * 1987-07-31 1989-02-06
JPH08142928A (en) * 1994-11-22 1996-06-04 Mitsubishi Motors Corp Lift reducing device
JP2004306935A (en) * 2003-03-24 2004-11-04 Yukinori Kato Under-floor flow straightening structure of automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1216429A (en) * 1968-04-18 1970-12-23 Daimler Benz Ag Improvements relating to vehicles
DE3712048A1 (en) * 1987-04-09 1988-10-27 Bayerische Motoren Werke Ag Device for reducing lift in vehicles
JPS6422583U (en) * 1987-07-31 1989-02-06
JPH08142928A (en) * 1994-11-22 1996-06-04 Mitsubishi Motors Corp Lift reducing device
JP2004306935A (en) * 2003-03-24 2004-11-04 Yukinori Kato Under-floor flow straightening structure of automobile

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007062681A (en) * 2005-09-02 2007-03-15 Honda Motor Co Ltd Lower bodywork of vehicle
JP4584799B2 (en) * 2005-09-02 2010-11-24 本田技研工業株式会社 Lower body structure of the vehicle
JP2007118750A (en) * 2005-10-27 2007-05-17 West Japan Railway Co Method and device for reducing traveling wind under floor of railroad vehicle
EP2439131A1 (en) 2010-10-06 2012-04-11 Honda Motor Co., Ltd. Air guide plate for the underside of a motor vehicle
JP2014054958A (en) * 2012-09-13 2014-03-27 Toyota Motor Corp Vehicle lower part structure
KR101584684B1 (en) 2014-04-30 2016-01-13 서울대학교산학협력단 Aerodynamic drag reduction device for under part of vehicle
KR101583920B1 (en) 2014-05-02 2016-01-13 현대자동차주식회사 Front spoiler apparatus for vehicle
JP2016150742A (en) * 2015-02-19 2016-08-22 トヨタ自動車株式会社 Vehicle having air flow path in vehicle body side face
CN105905175A (en) * 2015-02-19 2016-08-31 丰田自动车株式会社 VEHICLE structure
US9630662B2 (en) 2015-02-19 2017-04-25 Toyota Jidosha Kabushiki Kaisha Vehicle having vehicle-body side surfaces provided with airflow passages
JP2018030379A (en) * 2016-08-22 2018-03-01 マツダ株式会社 Flow straightening structure for vehicle lower part
US10040492B2 (en) 2016-11-15 2018-08-07 Hyundai Motor Company Variable spoiler apparatus of rear bumper for vehicle
US10266214B2 (en) 2016-11-15 2019-04-23 Hyundai Motor Company Variable spoiler apparatus of rear bumper for vehicle
US10300966B2 (en) 2016-11-15 2019-05-28 Hyundai Motor Company Variable rear spoiler apparatus of rear bumper for vehicle

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