JP5020653B2 - Draft shield - Google Patents

Draft shield Download PDF

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Publication number
JP5020653B2
JP5020653B2 JP2007026776A JP2007026776A JP5020653B2 JP 5020653 B2 JP5020653 B2 JP 5020653B2 JP 2007026776 A JP2007026776 A JP 2007026776A JP 2007026776 A JP2007026776 A JP 2007026776A JP 5020653 B2 JP5020653 B2 JP 5020653B2
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Prior art keywords
air
air flow
flow path
vehicle
air inlet
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JP2008189177A (en
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尚史 松尾
恵美 信田
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2007026776A priority Critical patent/JP5020653B2/en
Priority to TW097100692A priority patent/TWI394679B/en
Priority to IT000051A priority patent/ITTO20080051A1/en
Priority to DE102008007041A priority patent/DE102008007041B4/en
Priority to CN2008100071266A priority patent/CN101239635B/en
Priority to US12/024,890 priority patent/US7686369B2/en
Publication of JP2008189177A publication Critical patent/JP2008189177A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
    • B62J17/02—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for shielding only the rider's front
    • B62J17/04—Windscreens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J17/00—Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
    • B62J17/10—Ventilation or air guiding devices forming part of fairings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

この発明は、自動二輪車等の鞍乗り型車両の車体前部を覆う風防装置に関する。   The present invention relates to a windshield device that covers a front portion of a vehicle body of a saddle-ride type vehicle such as a motorcycle.

従来、上記風防装置において、そのスクリーンの両側を支持する部位の上端部に、上方に向けて開口する空気吹き出し口を設けたものがある（例えば、特許文献１参照。）。これは、前記部位の下側に設けた空気導入口より取り入れた走行風の一部を、前記空気吹き出し口から上方へ向けて吹き出し、その空気流をもってスクリーン後方の乗員を避けるように走行風全体を導くことで、スクリーン高さを抑えた上で良好な防風効果（スクリーン効果）を得るようにしたものである。
特開昭６４−００１６７１号公報 Conventionally, in the above windshield device, there is one in which an air outlet opening upward is provided at the upper end of a portion that supports both sides of the screen (see, for example, Patent Document 1). This is because a part of the traveling wind taken from the air inlet provided on the lower side of the part is blown upward from the air outlet, and the entire traveling wind is avoided by the air flow to avoid the passengers behind the screen. In this way, a good windproof effect (screen effect) is obtained while suppressing the screen height.
JP-A 64-001671

ところで、近年の自動二輪車等においては、高速走行時等における走行快適性のさらなる向上が要望されており、これに伴い、上述のような風防装置においても、スクリーン効果を高めるのみならず、高速走行時等における走行快適性の向上に寄与できるような構成であることが望ましい。
そこでこの発明は、走行風を上方へ吹き出すエアダクトを備えた風防装置において、スクリーン効果を高めると共に走行快適性の向上を図ることを目的とする。 By the way, in recent motorcycles and the like, there is a demand for further improvement in driving comfort during high-speed driving, etc. Accordingly, the windshield device as described above not only enhances the screen effect but also high-speed driving. It is desirable to have a configuration that can contribute to the improvement of running comfort at times.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to enhance a screen effect and improve running comfort in a windshield device provided with an air duct that blows a running wind upward.

上記課題の解決手段として、請求項１に記載した発明は、鞍乗り型車両（１）の車体前部に設けられてその後方の乗員（Ｊ）への防風効果を得る風防装置（１６）であって、当該風防装置（１６）の前部に設けられて車両前方に向けて開口する空気導入口（２８）と、当該風防装置（１６）の上部に設けられて上方に向けて開口する空気吹き出し口（２９）と、前記空気導入口（２８）と空気吹き出し口（２９）とを後上がりの空気流路（３０）を介して連通するエアダクト（２７）とを備える風防装置において、前記空気流路（３０）内に横方向に延びて該空気流路（３０）に沿うように後上がりとなる整流板（３３’）を有し、前記空気流路（３０）が、車両側面視で後側ほど急傾斜となるように湾曲する湾曲部（３０ａ）を有し、前記湾曲部（３０ａ）内に、該湾曲部（３０ａ）に沿うように湾曲する前記整流板（３３’）が設けられ、前記整流板（３３’）が、前記空気導入口（２８）から前記空気吹き出し口（２９）に至るまで連続的に設けられ、前記湾曲部（３０ａ）内かつ前記整流板（３３’）の表側及び裏側の空気流路（３０ａ’，３０ｂ’）に、前記湾曲部（３０ａ）と同様に湾曲する副整流板（３４，３４’）がそれぞれ設けられ、車両側面視において、前記整流板（３３’）の両端を結ぶ第一の直線（Ｌ３’）が、ステアリング軸線（Ｌ１）と直交して後輪（１３）の接地点（Ｔ）に至る第二の直線（Ｌ２）に対して、鈍角に配置されると共に、車両側面視において、前記副整流板（３４，３４’）の両端を結ぶ第三の直線（Ｌ４，Ｌ４’）が、前記第二の直線（Ｌ２）に対して、鈍角に配置されることを特徴とする。 As a means for solving the above problems, the invention described in claim 1 is a windshield device (16) provided at a front part of a vehicle body of a saddle-ride type vehicle (1) to obtain a windproof effect on a passenger (J) behind the saddle type vehicle (1 ) . The air inlet (28) provided at the front of the windshield device (16) and opening toward the front of the vehicle, and the air provided at the upper portion of the windshield device (16) and opened upward. outlet (29), the fairing and an air duct (27) communicating via a rear upward air flow path (30) and said air inlet (28) and an air outlet (29), said air has a flow path (30) laterally extending the rear upward along the air flow path (30) rectifying plate (33 '), said air flow path (30), as viewed from the side of the vehicle It has a curved portion (30a) that curves so as to be steeper toward the rear side, and the bay The rectifying plate (33 ′) that is curved along the curved portion (30a) is provided in the curved portion (30a), and the rectifying plate (33 ′) is supplied from the air introduction port (28) to the air. The curved portion (30a ', 30b') is provided in the curved portion (30a) and on the air flow paths (30a ', 30b') on the front side and the back side of the rectifying plate (33 '). 30a) are provided with curved secondary flow straightening plates (34, 34 ') , respectively, and the first straight line (L3') connecting both ends of the flow straightening plate (33 ') in the vehicle side view is the steering axis ( It is arranged at an obtuse angle with respect to the second straight line (L2) that is orthogonal to L1) and reaches the ground point (T) of the rear wheel (13) , and when viewed from the side of the vehicle, the sub-rectifier plate (34, 34). ') The third straight line (L4, L4') connecting both ends of the pair is opposite to the second straight line (L2). And it is arranged at an obtuse angle .

請求項２に記載した発明は、当該風防装置（１６）の前部両側には、その外面に沿うように左右外側ほど斜め後上方となるように傾斜して延びる左右一対のヘッドランプ（２１）が互いに離間して配設され、当該風防装置（１６）の上部を形成するスクリーン（２５）の下前端部には、前記空気導入口（２８）が車両前方に向けて開口し、前記空気導入口（２８）は、前記左右一対のヘッドランプ（２１）の間に位置すると共に、正面視で下側が狭い逆台形状をなし、前記ヘッドランプ（２１）の上端は、前記空気導入口（２８）の上端よりも上方に位置することを特徴とする。 According to the second aspect of the present invention, a pair of left and right headlamps (21) extending on both sides of the front portion of the windshield device (16) so as to be inclined rearward and upward toward the left and right outer sides along the outer surface thereof. Are spaced apart from each other, and at the lower front end of the screen (25) forming the upper part of the windshield device (16), the air inlet (28) opens toward the front of the vehicle. The mouth (28) is positioned between the pair of left and right headlamps (21) and has a reverse trapezoidal shape with a narrow lower side in front view. The upper end of the headlamp (21) is the air inlet (28). ) Is located above the upper end .

請求項３に記載した発明は、前記空気流路（３０）の左右幅は、前記空気導入口（２８）側から前記空気吹き出し口（２９）側に向けて広がるように滑らかに徐変して形成され、前記空気流路（３０）の前後厚さは、前記空気導入口（２８）側から前記空気吹き出し口（２９）側に向けて狭まるように滑らかに徐変して形成され、前記空気流路（３０）における空気流動方向と直交する断面での断面積は、前記空気導入口（２８）から前記空気吹き出し口（２９）に至るまで略同一とされることを特徴とする。 In the invention described in claim 3, the left and right width of the air flow path (30) is gradually and gradually changed so as to spread from the air inlet (28) side toward the air outlet (29) side. And the thickness of the air flow path (30) is gradually and gradually changed so as to be narrowed from the air inlet (28) side toward the air outlet (29) side. The cross-sectional area in the cross section orthogonal to the air flow direction in the flow path (30) is substantially the same from the air inlet (28) to the air outlet (29) .

請求項４に記載した発明は、前記副整流板（３４，３４’）は、前記空気導入口（２８）から前記空気流路（３０）の中間部でかつ前記湾曲部（３０ａ）の上端部に至るまで設けられることを特徴とする。 According to a fourth aspect of the present invention, the sub-rectifying plate (34, 34 ') is an intermediate portion of the air flow path (30) from the air introduction port (28) and an upper end portion of the curved portion (30a). It is provided until it reaches .

本発明によれば、空気導入口からエアダクト内に取り入れた走行風を空気吹き出し口から上方へ吹き出すことで、周囲の走行風も含めて当該風防装置後方の乗員を避けるように導くことができ、当該風防装置の高さ（スクリーン高さ）を抑えた上で乗員に対する良好なスクリーン効果を得ることができる。
また、空気流路内に整流板を設けることで、該空気流路内を流れる空気流の整流効果を得ると共に、空気流路内の負圧部を少なくして管路抵抗を減少させることができ、前記スクリーン効果をより一層高めることができる。
そして、前記整流板が前記第二の直線に対して鈍角に配置されることで、走行風圧による走行抵抗を軽減させると共に、走行風圧により整流板に作用する下向きの揚力を効率良く前輪へのダウンフォースとすることができ、特に高速走行時における走行快適性の向上を図ることができる。 According to the present invention , by blowing the traveling wind taken into the air duct from the air introduction port upward from the air outlet, it can be guided to avoid the occupant behind the windshield device including the surrounding traveling wind, A good screen effect for the occupant can be obtained while suppressing the height (screen height) of the windshield device.
Further, by providing a rectifying plate in the air flow path, it is possible to obtain a rectifying effect of the air flow flowing in the air flow path, and to reduce the pipe resistance by reducing the negative pressure portion in the air flow path. The screen effect can be further enhanced.
Then, the current plate is arranged at an obtuse angle with respect to the second straight line, thereby reducing the running resistance due to the running wind pressure and efficiently reducing the downward lift acting on the current plate by the running wind pressure to the front wheels. It is possible to improve the driving comfort especially during high-speed driving.

本発明によれば、空気流路内の空気流に対する高い整流効果を得ると共に、空気流路内の負圧部の発生及びこれに伴う管路抵抗を効果的に減少させることができ、前記スクリーン効果をより一層高めることができる。
また、走行風圧による下向きの揚力を増加させて前輪へのダウンフォースを効果的に得ることができ、走行快適性のさらなる向上を図ることができる。 According to the present invention , it is possible to obtain a high rectifying effect on the air flow in the air flow path, and to effectively reduce the generation of the negative pressure portion in the air flow path and the pipe line resistance associated therewith. The effect can be further enhanced.
Further, the downward lift due to the traveling wind pressure can be increased to effectively obtain the downforce to the front wheels, and the traveling comfort can be further improved.

以下、この発明の実施例を図面を参照して説明する。なお、以下の説明における前後左右等の向きは、特に記載が無ければ車両における向きと同一とする。また、図中矢印ＦＲは車両前方を、矢印ＬＨは車両左方を、矢印ＵＰは車両上方をそれぞれ示す。   Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle unless otherwise specified. In the figure, the arrow FR indicates the front of the vehicle, the arrow LH indicates the left side of the vehicle, and the arrow UP indicates the upper side of the vehicle.

＜実施例を説明するための参考例＞
図１に示す自動二輪車１は例えば低床フロア２を有するスクータ型車両であり、その前輪３はテレスコピック式のフロントフォーク４に軸支され、該フロントフォーク４はステアリングステム５を介して車体フレーム６前端部のヘッドパイプ７に操舵可能に枢支される。
ここで、図中符号Ｌ１はヘッドパイプ７の中心軸線でもあるステアリング回動軸線（ステアリング軸線）を示す。なお、フロントフォーク４の伸縮方向に沿う軸線とステアリング軸線Ｌ１とは平行である。
車体フレーム６は、ヘッドパイプ７から後下がりに後方へ延びた後に屈曲してさらに後上がりに後方へ延びるメインパイプ８を有してなる。ステアリングステム５の上端部にはハンドル９が取り付けられる。 <Reference example for explaining an example>
A motorcycle 1 shown in FIG. 1 is, for example, a scooter type vehicle having a low floor 2, and a front wheel 3 is pivotally supported by a telescopic front fork 4, and the front fork 4 is connected to a vehicle body frame 6 via a steering stem 5. The head pipe 7 at the front end is pivotably supported.
Here, reference symbol L1 in the figure indicates a steering rotation axis (steering axis) that is also the central axis of the head pipe 7. Note that the axis along the direction of expansion and contraction of the front fork 4 and the steering axis L1 are parallel.
The vehicle body frame 6 includes a main pipe 8 that extends from the head pipe 7 to the rear and rearward and then bends and extends rearward and rearward. A handle 9 is attached to the upper end portion of the steering stem 5.

車体フレーム６の後部にはスイングユニット１０がその前端側を中心に揺動可能に枢支される。スイングユニット１０はエンジン１１及び動力伝達機構１２を一体に構成してなり、その後端側の出力軸には駆動輪である後輪１３が取り付けられる。スイングユニット１０の後端部と車体フレーム６の後端部との間にはリアクッション１４が配設される。
ここで、図中符号Ｌ２は車両側面視で前記ステアリング軸線Ｌ１と直交して後輪１３の接地点Ｔに至るステアリング直交基準線を示す。なお、直線Ｌ２は概ねメインパイプ８の前部の中心軸上を通過する。 A swing unit 10 is pivotally supported at the rear portion of the vehicle body frame 6 so as to be swingable around its front end side. The swing unit 10 integrally includes an engine 11 and a power transmission mechanism 12, and a rear wheel 13 as a drive wheel is attached to an output shaft on the rear end side. A rear cushion 14 is disposed between the rear end portion of the swing unit 10 and the rear end portion of the vehicle body frame 6.
Here, symbol L2 in the figure indicates a steering orthogonal reference line that reaches the ground contact point T of the rear wheel 13 orthogonally to the steering axis L1 in a side view of the vehicle. The straight line L2 substantially passes on the central axis of the front portion of the main pipe 8.

車体フレーム６は主に合成樹脂からなるボディカバー１５により覆われる。ボディカバー１５は、車体フレーム６の前部をその前方から両側方に渡って覆うフロントカバー１６と、該フロントカバー１６の下方に連続するように車体フレーム６の下部を覆うアンダーカバー１７と、車体フレーム６の後部を覆うリアカバー１８と、メインパイプ８を左右に跨ぎフロントカバー１６の後部からアンダーカバー１７の上部に渡る部位を覆うフロアカバー１９とを主になる。   The body frame 6 is covered with a body cover 15 mainly made of synthetic resin. The body cover 15 includes a front cover 16 that covers the front portion of the body frame 6 from the front to both sides thereof, an under cover 17 that covers a lower portion of the body frame 6 so as to continue below the front cover 16, and a body frame. 6 mainly covers a rear cover 18 that covers the rear portion of the front cover 6 and a floor cover 19 that covers the main pipe 8 from side to side and covers a portion extending from the rear portion of the front cover 16 to the upper portion of the under cover 17.

リアカバー１８の上方には、該リアカバー１８内の物品収容室（図示略）を開閉可能な乗員（運転者及び後部搭乗者）用のシート２０が配設される。このシート２０の前部に着座した乗員（運転者）Ｊは、ハンドル９の左右グリップ部を両手で握り、フロアカバー１９の左右上面に両足を載せた運転姿勢をとる。このとき、乗員Ｊの正面（前方）にはフロントカバー１６が位置し、該フロントカバー１６が乗員Ｊを走行風圧から保護する。   Above the rear cover 18, a seat 20 for passengers (drivers and rear passengers) that can open and close an article storage chamber (not shown) in the rear cover 18 is disposed. An occupant (driver) J seated on the front portion of the seat 20 takes a driving posture in which the left and right grip portions of the handle 9 are gripped with both hands and both feet are placed on the left and right upper surfaces of the floor cover 19. At this time, the front cover 16 is located in front of the occupant J (front), and the front cover 16 protects the occupant J from the traveling wind pressure.

図２を併せて参照し、フロントカバー１６の前部両側には、その外面に沿うように左右外側ほど斜め後上方となるように傾斜して延びる左右一対のヘッドランプ２１が互いに離間して配設される。フロントカバー１６の左右両側には、前記ハンドル９の左右グリップ部の前方に張り出すように左右外側に突出する左右一対のサイドミラー２２が取り付けられる。各サイドミラー２２は前側ほど細身になる筐体を有し、該筐体の前部には左右フロントウインカ２３がそれぞれ配設される。なお、図２中線ＣＬは自動二輪車１の車体左右中心線を示す。   Referring also to FIG. 2, a pair of left and right headlamps 21 extending at an angle so as to be inclined rearward and upward along the outer surface of the front cover 16 are arranged on both sides of the front portion of the front cover 16 so as to be spaced apart from each other. Established. A pair of left and right side mirrors 22 are attached to the left and right sides of the front cover 16 so as to protrude outward in the left and right directions so as to project forward of the left and right grip portions of the handle 9. Each side mirror 22 has a casing that becomes thinner toward the front side, and left and right front blinkers 23 are arranged at the front of the casing. In FIG. 2, the line CL indicates the left-right center line of the motorcycle 1.

ここで、図３を併せて参照し、フロントカバー１６の上部かつ左右内側の部位は、例えばポリカーボネイト等の透明又は半透明の透過性樹脂等からなるスクリーン２５として構成される。スクリーン２５は、フロントカバー１６の上部における後上がりの前壁部（外壁部）を形成する概ね左右方向に沿う板状のスクリーン本体２６と、該スクリーン本体２６の下方から後方に渡ってこれに沿うように設けられるエアダクト２７とを有してなる。   Here, referring also to FIG. 3, the upper and left and right inner portions of the front cover 16 are configured as a screen 25 made of, for example, a transparent or translucent transparent resin such as polycarbonate. The screen 25 includes a plate-like screen body 26 that forms a front wall portion (outer wall portion) that rises rearward in the upper portion of the front cover 16, and a plate-like screen body 26 that extends substantially in the left-right direction. The air duct 27 is provided.

エアダクト２７はフロントカバー１６の内外方向（カバー内外方向）で所定の厚さを有し、スクリーン本体２６の裏側（カバー内側）に入り込むように設けられる。スクリーン２５は左右対称をなし、フロントカバー１６の両側部間に配置され、該スクリーン２５を通して乗員Ｊが車両前方を視認可能とされる。なお、フロントカバー１６におけるスクリーン２５を除く部位（カバー本体１６ａ）は例えばＡＢＳ等の有色の不透過性樹脂からなる。   The air duct 27 has a predetermined thickness in the inside / outside direction of the front cover 16 (inside / outside direction of the cover), and is provided so as to enter the back side (inside the cover) of the screen body 26. The screen 25 is symmetrical and is disposed between both sides of the front cover 16 so that the occupant J can visually recognize the front of the vehicle through the screen 25. The portion of the front cover 16 excluding the screen 25 (cover main body 16a) is made of a colored impermeable resin such as ABS.

スクリーン２５の下端部（前端部）にはエアダクト２７への空気導入口２８が車両前方に向けて開口し、スクリーン２５の上端部にはエアダクト２７からの空気吹き出し口２９が上方に向けて開口する。空気導入口２８はフロントカバー１６の前端部の左右ヘッドランプ２１間（左右中央部）に位置し、空気吹き出し口２９はフロントカバー１６の上縁部の左右端に渡って位置する。スクリーン２５（フロントカバー１６）の上縁部高さは乗員Ｊの前方視界を遮らない程度（胸部高さ程度）とされる。   An air inlet 28 to the air duct 27 opens toward the front of the vehicle at the lower end (front end) of the screen 25, and an air outlet 29 from the air duct 27 opens upward at the upper end of the screen 25. . The air introduction port 28 is located between the left and right headlamps 21 at the front end portion of the front cover 16 (right and left central portion), and the air blowing port 29 is located across the left and right ends of the upper edge portion of the front cover 16. The height of the upper edge portion of the screen 25 (front cover 16) is set so as not to obstruct the front view of the occupant J (about the chest height).

空気導入口２８はフロントカバー１６における後上がりの前端面に沿って開口し、その正面視（前面視）で下側が狭い逆台形状をなし、かつその上辺部２８ａが下方に凸の湾曲状とされる。この空気導入口２８の上辺部２８ａを下縁部（前縁部）として、スクリーン本体２６が斜め上後方に立ち上がるように設けられる。スクリーン本体２６は、側面視で斜め下後方に向けて凹むように（カバー内側に向けて凸状となるように）湾曲し、その外面（前面）２６ａに沿って車両前方からの空気（走行風）を斜め上後方に受け流す。なお、スクリーン２５両側を支持するフロントカバー１６の両側部は、左右外側ほど後方に回り込む湾曲面１６ｂ（図２参照）を形成し、車両前方からの走行風を後方かつ左右外側に受け流す。   The air inlet 28 opens along the front end surface of the front cover 16 that rises rearward, has an inverted trapezoidal shape with a narrow lower side when viewed from the front (front view), and has an upper side portion 28a that is convex downward. Is done. With the upper side portion 28a of the air introduction port 28 as a lower edge portion (front edge portion), the screen body 26 is provided so as to rise obliquely upward and rearward. The screen main body 26 is curved so as to be recessed obliquely downward and rearward in a side view (to be convex toward the inside of the cover), and air (running wind) from the front of the vehicle along the outer surface (front surface) 26a. ) Diagonally upward and backward. In addition, the both sides of the front cover 16 that supports both sides of the screen 25 form curved surfaces 16b (see FIG. 2) that wrap around to the rear in the left and right sides, and receive the traveling wind from the front of the vehicle to the rear and left and right sides.

空気吹き出し口２９は、空気導入口２８に対して左右に長くかつカバー内外方向（ここでは前後方向）での厚さを抑えた横長の長方形状をなし、フロントカバー１６の上縁部においてやや前下がりの上端面に沿って開口する。この空気吹き出し口２９の前辺部２９ａはスクリーン本体２６の上縁部により形成される。なお、空気吹き出し口２９はフロントカバー１６上縁部の左右中央部において所定の左右幅をもって設けられるともいえる。   The air outlet 29 has a horizontally long rectangular shape that is long to the left and right with respect to the air inlet 28 and has a reduced thickness in the inside and outside of the cover (herein, the front-rear direction), and is slightly forward at the upper edge of the front cover 16. Open along the lower end face. The front side 29 a of the air outlet 29 is formed by the upper edge of the screen body 26. In addition, it can be said that the air outlet 29 is provided with a predetermined left-right width in the left-right center portion of the upper edge portion of the front cover 16.

エアダクト２７は、スクリーン本体２６の両側縁部から後方に立設される左右一対の板状の側壁部３１と、これら両側壁部３１の後縁部間に渡る板状の後壁部３２と、両側壁部３１の前後中間部間に渡る整流板３３とを有してなる。後壁部３２はスクリーン本体２６に沿うように側面視で斜め下後方に向けて凸状に湾曲し、この後壁部３２、両側壁部３１及びスクリーン本体２６により、スクリーン本体２６に沿うように空気導入口２８から空気吹き出し口２９に至るまで滑らかに連続して後上がりに延びるエアダクト２７の空気流路３０が形成される。   The air duct 27 includes a pair of left and right plate-like side wall portions 31 erected rearward from both side edge portions of the screen body 26, a plate-like rear wall portion 32 extending between the rear edge portions of the both side wall portions 31, A rectifying plate 33 is provided between the front and rear intermediate portions of the side wall portions 31. The rear wall portion 32 is curved in a convex shape toward the diagonally lower back in a side view along the screen main body 26, and is formed along the screen main body 26 by the rear wall portion 32, both side wall portions 31 and the screen main body 26. An air flow path 30 of an air duct 27 extending smoothly and continuously from the air inlet 28 to the air outlet 29 is formed.

空気導入口２８の上辺部２８ａの左右幅と空気吹き出し口２９の前辺部２９ａの左右幅とは略同一とされ、かつスクリーン本体２６の左右幅はその上下に渡って略同一とされる。また、スクリーン本体２６の左右幅はエアダクト２７の左右全幅と略同一に設けられる。   The left and right width of the upper side portion 28a of the air introduction port 28 and the left and right width of the front side portion 29a of the air blowing port 29 are substantially the same, and the left and right width of the screen body 26 is substantially the same across the top and bottom. The left and right width of the screen body 26 is provided substantially the same as the full left and right width of the air duct 27.

一方、空気導入口２８における後壁部３２の左右幅は、空気吹き出し口２９におけるそれよりも狭いものとされる。これは、空気導入口２８が逆台形状をなしており、スクリーン本体２６から後壁部３２にかけて左右幅が狭まるように形成されると共に、空気吹き出し口２９ではスクリーン本体２６から後壁部３２にかけて左右幅が広がるように形成されるからである。なお、エアダクト２７の左右幅は空気吹き出し口２９近傍の後壁部３２において最大となる。   On the other hand, the left-right width of the rear wall portion 32 at the air inlet 28 is narrower than that at the air outlet 29. This is because the air inlet 28 has an inverted trapezoidal shape and is formed so that the lateral width narrows from the screen body 26 to the rear wall portion 32, and at the air outlet 29 from the screen body 26 to the rear wall portion 32. This is because the left and right widths are formed to widen. The left and right width of the air duct 27 is maximized at the rear wall portion 32 in the vicinity of the air outlet 29.

空気流路３０の左右幅（平均左右幅）は、空気導入口２８側から空気吹き出し口２９側に向けて広がるように滑らかに徐変して形成される。また、空気流路３０は、カバー内外方向での厚さが空気導入口２８側から空気吹き出し口２９側に向けて狭まるように滑らかに徐変して形成される。空気流路３０における空気流動方向と直交する断面での断面積は、空気導入口２８から空気吹き出し口２９に至るまで略同一とされる。   The left and right widths (average left and right widths) of the air flow path 30 are formed by gradually and gradually changing so as to spread from the air introduction port 28 side toward the air blowing port 29 side. In addition, the air flow path 30 is formed so as to be gradually and gradually changed so that the thickness in the inside and outside direction of the cover becomes narrower from the air introduction port 28 side toward the air blowing port 29 side. The cross-sectional area in the cross section orthogonal to the air flow direction in the air flow path 30 is substantially the same from the air inlet 28 to the air outlet 29.

図３に示すように、空気流路３０の下部（前部）は、後側ほど急傾斜となるように側面視で湾曲する湾曲部３０ａとされ、空気流路３０の上部は、斜め上後方に向けて側面視で直線状に延びる直線部３０ｂとされる。湾曲部３０ａ内には、スクリーン本体２６及び後壁部３２に沿うように側面視で湾曲する整流板３３が設けられる。すなわち、整流板３３は空気導入口２８から湾曲部３０ａの上端部（空気流路３０の中間部）に至るまで設けられる。
ここで、図中符号Ｌ３は車両側面視で整流板３３の外面の上下端３３ａ，３３ｂを結ぶ整流板傾斜基準線を示す。 As shown in FIG. 3, the lower part (front part) of the air flow path 30 is a curved part 30 a that is curved in a side view so that the rear side is steeper, and the upper part of the air flow path 30 is diagonally upward and rearward. It is set as the linear part 30b extended linearly toward side by side view. A rectifying plate 33 that is curved in side view is provided in the curved portion 30 a so as to follow the screen body 26 and the rear wall portion 32. That is, the rectifying plate 33 is provided from the air introduction port 28 to the upper end portion of the bending portion 30a (intermediate portion of the air flow path 30).
Here, a symbol L3 in the figure indicates a rectifying plate inclination reference line that connects the upper and lower ends 33a and 33b of the outer surface of the rectifying plate 33 in a side view of the vehicle.

図１，４に示すように、自動二輪車１の走行時においては、その前方から後方に略水平に流れる走行風の一部（図中矢印Ａ参照）が、空気導入口２８よりエアダクト２７内に取り入れられる。エアダクト２７内に進入した走行風は、その流れの方向を空気流路３０に沿って後上がりに変化させつつ、空気吹き出し口２９より斜め上後方に向けて指向性を持って吹き出される（図中矢印Ｂ参照）。   As shown in FIGS. 1 and 4, when the motorcycle 1 is traveling, a part of the traveling wind (see arrow A in the figure) that flows substantially horizontally from the front to the rear is introduced into the air duct 27 from the air inlet 28. Incorporated. The traveling wind that has entered the air duct 27 is blown out with directivity from the air outlet 29 obliquely upward and rearward while changing the direction of the flow rearwardly upward along the air flow path 30 (FIG. Middle arrow B).

このとき、整流板３３が無い場合（図４（ｂ）参照）には、空気流路３０の湾曲部３０ａにおいてスクリーン本体２６の裏側に比較的大きな負圧部（低圧部）Ｆが生じることとなるが、特に湾曲部３０ａに整流板３３を設けることで（図４（ａ）参照）、スクリーン本体２６の裏側及び整流板３３の裏側にそれぞれ少量の負圧部Ｆ’が生じるのみとすることができる。すなわち、整流板３３は、エアダクト２７内（特に湾曲部３０ａ内）を流動する走行風に整流効果を付与すると共に、空気流路３０内の負圧部を少なくして管路抵抗を減少させる。また、スクリーン２５全体の剛性の向上にも寄与するのである。   At this time, when there is no rectifying plate 33 (see FIG. 4B), a relatively large negative pressure portion (low pressure portion) F is generated on the back side of the screen body 26 in the curved portion 30a of the air flow path 30. However, in particular, by providing the rectifying plate 33 in the curved portion 30a (see FIG. 4A), only a small amount of negative pressure portion F ′ is generated on the back side of the screen body 26 and the back side of the rectifying plate 33, respectively. Can do. That is, the rectifying plate 33 imparts a rectifying effect to the traveling wind flowing in the air duct 27 (particularly in the curved portion 30a) and reduces the negative pressure portion in the air flow path 30 to reduce the pipe resistance. Moreover, it contributes to the improvement of the rigidity of the entire screen 25.

空気吹き出し口２９から吹き出された空気流は、スクリーン２５の上方を通過して乗員Ｊに至ろうとする走行風の流れをも斜め上後方に変化させるべく作用する（図１中矢印Ｃ参照）。これにより、スクリーン高さを抑えた上で、乗員Ｊに向かう走行風全体を該乗員Ｊを避けるように導くことができる（すなわち良好なスクリーン効果を得ることができる）。なお、空気吹き出し口２９がフロントカバー１６の上縁部の左右端に渡るように設けられることで、エアダクト２７を通じた走行風の吹き出し幅が広がり、前記スクリーン効果を得る範囲が増大する。   The air flow blown out from the air blowing port 29 acts to change the flow of the traveling wind that passes over the screen 25 and reaches the occupant J diagonally upward and backward (see arrow C in FIG. 1). As a result, it is possible to guide the entire traveling wind toward the occupant J while avoiding the occupant J while suppressing the screen height (that is, a good screen effect can be obtained). Since the air blowing port 29 is provided so as to extend to the left and right ends of the upper edge portion of the front cover 16, the blowing width of the traveling wind through the air duct 27 is widened, and the range for obtaining the screen effect is increased.

ここで、図１，３に示す車両側面視において、前記整流板傾斜基準線Ｌ３は、前記ステアリング直交基準線Ｌ２に対して、直交するよりも傾斜を路面方向に寝かせて（鈍角に）配置される。すなわち、整流板基準線Ｌ３とステアリング直交基準線Ｌ２との交点の下方（又は上方）に形成される角度θ３は９０度よりも大きい角度とされる。換言すれば、整流板傾斜基準線Ｌ３はステアリング軸線Ｌ１よりも傾斜を寝かせて配置される。   Here, in the side view of the vehicle shown in FIGS. 1 and 3, the rectifying plate inclination reference line L3 is arranged with an inclination in the road surface direction (obtuse angle) rather than orthogonal to the steering orthogonal reference line L2. The That is, the angle θ3 formed below (or above) the intersection of the rectifying plate reference line L3 and the steering orthogonal reference line L2 is an angle larger than 90 degrees. In other words, the rectifying plate inclination reference line L3 is arranged with a lower inclination than the steering axis L1.

整流板３３には、その傾斜方向（整流板傾斜基準線Ｌ３）との直交方向である斜め下後方に向けて、走行風圧による下向きの揚力が作用するが、整流板３３がステアリング軸線Ｌ１よりも傾斜を寝かせて配置されることで、前記揚力にステアリング軸線Ｌ１に沿う下方への分力を含ませることができる。これにより、前輪３へのダウンフォースを効率良く付与することができ、特に高速走行時における走行安定性の向上に寄与する。   The rectifying plate 33 is subjected to a downward lift due to the traveling wind pressure toward the diagonally downward and rearward direction orthogonal to the inclination direction (rectifying plate inclination reference line L3). However, the rectifying plate 33 is more than the steering axis L1. By disposing the slope laid down, the lift force can include a downward component force along the steering axis L1. Thereby, the down force to the front wheel 3 can be provided efficiently, and it contributes to the improvement of running stability especially at high speed running.

以上説明したように、上記参考例における風防装置は、自動二輪車１の車体前部に設けられてその後方の乗員Ｊへの防風効果を得るフロントカバー１６であって、当該フロントカバー１６の前部に設けられて車両前方に向けて開口する空気導入口２８と、当該フロントカバー１６の上部に設けられて上方に向けて開口する空気吹き出し口２９と、前記空気導入口２８と空気吹き出し口２９とを後上がりの空気流路３０を介して連通するエアダクト２７とを備えるものにおいて、前記空気流路３０内にこれに沿うように後上がりの整流板３３を有し、車両側面視において、前記整流板３３の両端を結ぶ整流板傾斜基準線Ｌ３が、ステアリング軸線Ｌ１と直交して後輪１３の接地点Ｔに至るステアリング直交基準線Ｌ２に対して、鈍角に配置されるものである。 As described above, the windshield device in the above reference example is the front cover 16 that is provided at the front of the vehicle body of the motorcycle 1 and obtains a windproof effect on the passenger J behind it. An air inlet 28 that opens toward the front of the vehicle, an air outlet 29 that is provided at the top of the front cover 16 and opens upward, and the air inlet 28 and air outlet 29. And an air duct 27 communicating with the rear upward air flow path 30, the air flow path 30 has a rearward flow straightening plate 33 along the air flow path 30. A straightening plate inclination reference line L3 connecting both ends of the plate 33 is disposed at an obtuse angle with respect to the steering orthogonal reference line L2 that is orthogonal to the steering axis L1 and reaches the ground contact point T of the rear wheel 13. It is intended.

この構成によれば、空気導入口２８からエアダクト２７内に取り入れた走行風を空気吹き出し口２９から上方へ吹き出すことで、周囲の走行風も含めて当該フロントカバー１６後方の乗員Ｊを避けるように導くことができ、当該フロントカバー１６の高さ（スクリーン高さ）を抑えた上で乗員Ｊに対する良好なスクリーン効果を得ることができる。
また、空気流路３０内に整流板３３を設けることで、該空気流路３０内を流れる空気流の整流効果を得ると共に、空気流路３０内の負圧部を少なくして管路抵抗を減少させることができ、前記スクリーン効果をより一層高めることができる。
そして、前記整流板３３が前記ステアリング直交基準線Ｌ２に対して鈍角に配置されることで、走行風圧による走行抵抗を軽減させると共に、走行風圧により整流板３３に作用する下向きの揚力を効率良く前輪３へのダウンフォースとすることができ、特に高速走行時における走行快適性の向上を図ることができる。 According to this configuration, the traveling wind taken into the air duct 27 from the air inlet port 28 is blown upward from the air outlet port 29 so as to avoid the occupant J behind the front cover 16 including the surrounding traveling wind. Thus, it is possible to obtain a good screen effect for the occupant J while suppressing the height (screen height) of the front cover 16.
Further, by providing the rectifying plate 33 in the air flow path 30, a rectification effect of the air flow flowing in the air flow path 30 is obtained, and the negative pressure portion in the air flow path 30 is reduced to reduce the pipe resistance. The screen effect can be further enhanced.
The rectifying plate 33 is arranged at an obtuse angle with respect to the steering orthogonal reference line L2, thereby reducing the traveling resistance due to the traveling wind pressure and efficiently reducing the downward lift acting on the rectifying plate 33 by the traveling wind pressure. The down comfort to 3 can be achieved, and the driving comfort can be improved particularly during high speed driving.

また、上記風防装置においては、前記空気流路３０が車両側面視で後側ほど急傾斜となるように湾曲する湾曲部３０ａを有し、該湾曲部３０ａ内にこれと同様に湾曲する前記整流板３３が設けられることで、空気流路３０内の空気流に対する高い整流効果を得ると共に、空気流路３０内の負圧部の発生及びこれに伴う管路抵抗を効果的に減少させることで、前記スクリーン効果をより一層高めることができる。
また、走行風圧による下向きの揚力を増加させて前輪３へのダウンフォースを増大させ、走行快適性のさらなる向上を図ることができる。 Further, in the windshield device, the air flow path 30 has a curved portion 30a that curves so as to be steeper toward the rear side in a vehicle side view, and the rectification that curves in the same manner in the curved portion 30a. By providing the plate 33, it is possible to obtain a high rectifying effect on the air flow in the air flow path 30, and to effectively reduce the generation of the negative pressure portion in the air flow path 30 and the associated pipe resistance. The screen effect can be further enhanced.
Further, the downward lift due to the traveling wind pressure can be increased to increase the downforce to the front wheels 3, thereby further improving the running comfort.

なお、上記参考例において、空気流路３０内に複数（二つが適当）の整流板３３を設けた構成としてもよい。このとき、車両側面視において、各整流板３３における両端を結ぶ各整流板傾斜基準線は、それぞれ前記ステアリング直交基準線Ｌ２に対して、直交するよりも傾斜を寝かせて配置されるものとする。
この構成によれば、複数の整流板３３によりさらに高い整流効果を得ると共に管路抵抗をより効果的に減少させることができる。また、各整流板３３に揚力が作用することで前輪３へのダウンフォースを増加させて走行快適性のさらなる向上を図ることができる。 In the above reference example , a plurality of (two may be appropriate) rectifying plates 33 may be provided in the air flow path 30. At this time, in the vehicle side view, each rectifying plate inclination reference line that connects both ends of each rectifying plate 33 is arranged to be inclined rather than orthogonal to the steering orthogonal reference line L2.
According to this configuration, it is possible to obtain a higher rectifying effect by the plurality of rectifying plates 33 and to reduce the pipe resistance more effectively. Further, the lift force acts on each rectifying plate 33, so that the downforce to the front wheels 3 can be increased, and the running comfort can be further improved.

＜実施例＞
次に、この発明の実施例について図１を援用し図５を参照して説明する。
この実施例におけるフロントカバー１１６（スクリーン１２５）は、前記参考例のものに対して、前記整流板３３に代わり空気流路３０の全長に渡って（すなわち空気導入口２８から空気吹き出し口２９に至るまで）連続的に設けられる整流板３３’を有すると共に、該整流板３３’の表側及び裏側の空気流路３０内にそれぞれ副整流板３４，３４’を有する点を主に異なるもので、参考例と同一部分に同一符号を付してその説明を省略する。 <Example>
Next, an embodiment of the present invention will be described with reference to FIG.
The front cover 116 (screen 125) in this embodiment is the same as that of the reference example , but instead of the rectifying plate 33, extends over the entire length of the air flow path 30 (that is, from the air inlet 28 to the air outlet 29). 'together with a rectifier plate 33' to) continuously provided are current plate 33 is mainly different points respectively on the front side and back side of the air flow path 30 of a sub-current plate 34, 34 ', reference The same parts as those in the example are denoted by the same reference numerals, and the description thereof is omitted.

整流板３３’は、スクリーン本体２６及び後壁部３２に沿うように、空気導入口２８から空気吹き出し口２９に至るまで設けられる。この整流板３３’により、空気流路３０全体が外側及び内側流路３０ａ’，３０ｂ’に二分される。外側及び内側流路３０ａ’，３０ｂ’における空気流動方向と直交する断面での断面積は、空気導入口２８から空気吹き出し口２９に至るまで略同一とされる。   The rectifying plate 33 ′ is provided from the air inlet 28 to the air outlet 29 along the screen body 26 and the rear wall 32. By this rectifying plate 33 ', the entire air flow path 30 is divided into two outer and inner flow paths 30a' and 30b '. The cross-sectional areas of the outer and inner flow paths 30 a ′ and 30 b ′ in the cross section orthogonal to the air flow direction are substantially the same from the air inlet 28 to the air outlet 29.

空気流路３０の湾曲部３０ａ内であって整流板３３’の表側及び裏側には、それぞれスクリーン本体２６及び後壁部３２に沿うように側面視で湾曲する副整流板３４，３４’が設けられる。すなわち、副整流板３４，３４’は空気導入口２８から湾曲部３０ａの上端部（空気流路３０の中間部）に至るまで設けられる。
ここで、図中符号Ｌ３’は車両側面視で整流板３３’の外面の上下端３３ａ’，３３ｂ’を結ぶ整流板傾斜基準線を、符号Ｌ４，Ｌ４’は車両側面視で各副整流板３４，３４’の外面の上下端３４ａ，３４ｂ又は３４ａ’，３４ｂ’を結ぶ副整流板傾斜基準線をそれぞれ示す。 In the curved portion 30a of the air flow path 30, on the front side and the back side of the rectifying plate 33 ′, there are provided auxiliary rectifying plates 34 and 34 ′ that are curved in side view along the screen body 26 and the rear wall portion 32, respectively. It is done. That is, the sub rectifying plates 34 and 34 ′ are provided from the air introduction port 28 to the upper end portion of the bending portion 30 a (intermediate portion of the air flow path 30).
Here, reference numeral L3 ′ in the figure denotes a rectifying plate inclination reference line connecting upper and lower ends 33a ′ and 33b ′ of the outer surface of the rectifying plate 33 ′ in a side view of the vehicle, and reference numerals L4 and L4 ′ denote each sub rectifying plate in a side view of the vehicle. Sub-rectifier plate inclination reference lines connecting the upper and lower ends 34a, 34b or 34a ', 34b' of the outer surfaces of 34, 34 'are shown.

またここで、図５に示す車両側面視において、前記整流板傾斜基準線Ｌ３’及び副整流板傾斜基準線Ｌ４，Ｌ４’は、前記ステアリング直交基準線Ｌ２に対して、直交するよりも傾斜を路面方向に寝かせて（鈍角に）配置される。すなわち、整流板基準線Ｌ３’及び副整流板基準線Ｌ４，Ｌ４’とステアリング直交基準線Ｌ２との交点の下方（又は上方）に形成される角度θ３’及びθ４，θ４’は９０度よりも大きい角度とされる。換言すれば、整流板傾斜基準線Ｌ３’及び副整流板基準線Ｌ４，Ｌ４’は、ステアリング軸線Ｌ１よりも傾斜を寝かせて配置される。   Further, here, in the vehicle side view shown in FIG. 5, the rectifying plate inclination reference line L3 ′ and the auxiliary rectifying plate inclination reference lines L4, L4 ′ are inclined rather than orthogonal to the steering orthogonal reference line L2. It is placed on the road surface (at an obtuse angle). That is, the angles θ3 ′, θ4, and θ4 ′ formed below (or above) the intersections of the current plate reference line L3 ′, the sub current plate reference lines L4, L4 ′, and the steering orthogonal reference line L2 are more than 90 degrees. A large angle is assumed. In other words, the rectifying plate inclination reference line L3 'and the auxiliary rectifying plate reference lines L4, L4' are arranged with a lower inclination than the steering axis L1.

以上説明したように、上記実施例における風防装置は、前記整流板３３’が前記空気導入口２８から前記空気吹き出し口２９に至るまで連続的に設けられ、前記空気流路３０が車両側面視で後側ほど急傾斜となるように湾曲する湾曲部３０ａを有し、該湾曲部３０ａ内かつ前記整流板３３’の表側及び裏側のそれぞれに、前記湾曲部３０ａと同様に湾曲する副整流板３４，３４’が設けられ、車両側面視において、前記副整流板３４，３４’の両端を結ぶ副整流板傾斜基準線Ｌ４，Ｌ４’が、前記ステアリング直交基準線Ｌ２に対して、鈍角に配置されるものである。 As described above, in the windshield device in the above embodiment , the rectifying plate 33 ′ is continuously provided from the air inlet 28 to the air outlet 29, and the air flow path 30 is viewed from the side of the vehicle. There is a curved portion 30a that curves so as to be steeply inclined toward the rear side, and a secondary rectifying plate 34 that curves in the curved portion 30a and on the front side and the back side of the rectifying plate 33 ′ in the same manner as the curved portion 30a. , 34 'are provided, and when the vehicle is viewed from the side, sub-rectifier plate inclination reference lines L4, L4' connecting both ends of the sub-rectifier plates 34, 34 'are arranged at an obtuse angle with respect to the steering orthogonal reference line L2. Is.

この構成によれば、空気流路３０内の空気流に対するより高い整流効果を得ると共に、空気流路３０内の負圧部の発生及びこれに伴う管路抵抗をより効果的に減少させることで、前記スクリーン効果をより一層高めることができる。
また、走行風圧による下向きの揚力をより増加させて前輪３へのダウンフォースをより増大させ、走行快適性のさらなる向上を図ることができる。 According to this configuration, while obtaining a higher rectifying effect on the air flow in the air flow path 30, it is possible to more effectively reduce the generation of the negative pressure portion in the air flow path 30 and the associated pipe resistance. The screen effect can be further enhanced.
Further, the downward lift due to the traveling wind pressure can be further increased to further increase the downforce to the front wheels 3, thereby further improving traveling comfort.

なお、上記実施例において、所望するダウンフォースの大きさ等に応じて、前記整流板３３’の表側又は裏側の何れか一方のみに副整流板３４又は３４’を設けた構成としてもよい。また、整流板３３’を複数設けることも可能である。
ここで、上記実施例において、エアダクト２７、空気導入口２８及び空気吹き出し口２９をスクリーン２５と別体に設けたりカバー本体１６ａに設けた構成としてもよい。
そして、上記実施例における構成は一例であり、スクータ型の自動二輪車への適用に限定されないことはもちろん、発明の要旨を逸脱しない範囲で種々の変更が可能であることはいうまでもない。 In the above-described embodiment , the sub-rectifier plate 34 or 34 ′ may be provided only on either the front side or the back side of the rectifier plate 33 ′ according to the desired downforce size or the like. It is also possible to provide a plurality of rectifying plates 33 ′.
Here, in the above embodiment , the air duct 27, the air inlet port 28, and the air outlet port 29 may be provided separately from the screen 25 or may be provided in the cover body 16a.
The configuration in the above embodiment is merely an example, and is not limited to application to a scooter-type motorcycle. Needless to say, various modifications can be made without departing from the scope of the invention.

この発明の参考例における自動二輪車の左側面図である。1 is a left side view of a motorcycle according to a reference example of the present invention. 上記自動二輪車の前面図である。Fig. 2 is a front view of the motorcycle. 上記自動二輪車の車体前部の一部断面を含む左側面図である。Fig. 2 is a left side view including a partial cross section of a front part of a vehicle body of the motorcycle. 上記自動二輪車の風防装置における図３に相当する作用説明図であり、（ａ）はエアダクト内に整流板がある場合を、（ｂ）は前記整流板が無い場合をそれぞれ示す。FIGS. 4A and 4B are operation explanatory views corresponding to FIG. 3 in the motorcycle windshield device, in which FIG. 3A shows a case where a current plate is provided in the air duct, and FIG. この発明の実施例における図３に相当する左側面図である。It is a left view equivalent to FIG. 3 in the Example of this invention.

１ 自動二輪車（鞍乗り型車両）
１３ 後輪
Ｔ 接地点
１６，１１６ フロントカバー（風防装置）
２１ ヘッドランプ
２５，１２５ スクリーン
２６ スクリーン本体
２７ エアダクト
２８ 空気導入口
２９ 空気吹き出し口
３０ 空気流路
３０ａ 湾曲部
３０ａ’ 外側流路（空気流路）
３０ｂ’ 内側流路（空気流路）
３３，３３’ 整流板
３４，３４’ 副整流板
Ｌ１ ステアリング軸線
Ｌ２ ステアリング直交基準線（第二の直線）
Ｌ３，Ｌ３’ 整流板傾斜基準線（第一の直線）
Ｌ４，Ｌ４’ 副整流板傾斜基準線（第三の直線）
Ｊ 乗員 1 Motorcycle (saddle-ride type vehicle)
13 Rear wheel T Grounding point 16,116 Front cover (windshield device)
21 Head lamp 25, 125 Screen 26 Screen body 27 Air duct 28 Air inlet 29 Air outlet 30 Air flow path 30a Curved portion
30a 'outer channel (air channel)
30b 'inner channel (air channel)
33, 33 'Current plate 34, 34' Sub current plate L1 Steering axis L2 Steering orthogonal reference line (second straight line)
L3, L3 'Rectification plate tilt reference line (first straight line)
L4, L4 'Sub-rectifier plate tilt reference line ( third straight line)
J Crew

Claims (4)

鞍乗り型車両（１）の車体前部に設けられてその後方の乗員（Ｊ）への防風効果を得る風防装置（１６）であって、
当該風防装置（１６）の前部に設けられて車両前方に向けて開口する空気導入口（２８）と、当該風防装置（１６）の上部に設けられて上方に向けて開口する空気吹き出し口（２９）と、前記空気導入口（２８）と空気吹き出し口（２９）とを後上がりの空気流路（３０）を介して連通するエアダクト（２７）とを備える風防装置において、
前記空気流路（３０）内に横方向に延びて該空気流路（３０）に沿うように後上がりとなる整流板（３３’）を有し、
前記空気流路（３０）が、車両側面視で後側ほど急傾斜となるように湾曲する湾曲部（３０ａ）を有し、
前記湾曲部（３０ａ）内に、該湾曲部（３０ａ）に沿うように湾曲する前記整流板（３３’）が設けられ、
前記整流板（３３’）が、前記空気導入口（２８）から前記空気吹き出し口（２９）に至るまで連続的に設けられ、
前記湾曲部（３０ａ）内かつ前記整流板（３３’）の表側及び裏側の空気流路（３０ａ’，３０ｂ’）に、前記湾曲部（３０ａ）と同様に湾曲する副整流板（３４，３４’）がそれぞれ設けられ、
車両側面視において、前記整流板（３３’）の両端を結ぶ第一の直線（Ｌ３’）が、ステアリング軸線（Ｌ１）と直交して後輪（１３）の接地点（Ｔ）に至る第二の直線（Ｌ２）に対して、鈍角に配置されると共に、
車両側面視において、前記副整流板（３４，３４’）の両端を結ぶ第三の直線（Ｌ４，Ｌ４’）が、前記第二の直線（Ｌ２）に対して、鈍角に配置されることを特徴とする風防装置。 A windshield device (16) provided at the front of the vehicle body of the saddle-ride type vehicle (1) to obtain a windproof effect for a passenger (J) behind the vehicle,
An air inlet (28) provided at the front of the windshield device (16) and opening toward the front of the vehicle, and an air outlet (upward provided at the top of the windshield device (16) and opening upward) 29) and a windshield device comprising an air duct (27) communicating the air inlet (28) and the air outlet (29) through a rear upward air flow path (30),
The air flow path (30) has a rectifying plate (33 ′) that extends laterally into the air flow path (30) and rises rearward along the air flow path (30).
The air flow path (30) has a curved portion (30a) that curves so as to be steeper toward the rear side in a vehicle side view,
In the curved portion (30a), the rectifying plate (33 ′) that is curved along the curved portion (30a) is provided,
The rectifying plate (33 ′) is continuously provided from the air inlet (28) to the air outlet (29),
Sub-rectifier plates (34, 34) that are curved in the same manner as the curved portion (30a) in the air flow passages (30a ′, 30b ′) in the curved portion (30a) and on the front and back sides of the rectifying plate (33 ′). ')
In a vehicle side view, a second straight line (L3 ′) connecting both ends of the current plate (33 ′) is perpendicular to the steering axis (L1) and reaches the grounding point (T) of the rear wheel (13). against a straight line (L2), while being disposed at an obtuse angle,
In the vehicle side view, the third straight line (L4, L4 ′) connecting both ends of the sub-rectifying plate (34, 34 ′) is arranged at an obtuse angle with respect to the second straight line (L2). Characteristic windshield device. 当該風防装置（１６）の前部両側には、その外面に沿うように左右外側ほど斜め後上方となるように傾斜して延びる左右一対のヘッドランプ（２１）が互いに離間して配設され、  On both sides of the front portion of the windshield device (16), a pair of left and right headlamps (21) extending so as to be obliquely rearward and upward toward the left and right outer sides along the outer surface thereof are disposed apart from each other.
当該風防装置（１６）の上部を形成するスクリーン（２５）の下前端部には、前記空気導入口（２８）が車両前方に向けて開口し、  At the lower front end of the screen (25) forming the upper part of the windshield device (16), the air inlet (28) opens toward the front of the vehicle,
前記空気導入口（２８）は、前記左右一対のヘッドランプ（２１）の間に位置すると共に、正面視で下側が狭い逆台形状をなし、  The air inlet (28) is located between the pair of left and right headlamps (21) and has an inverted trapezoidal shape with a narrow lower side in front view,
前記ヘッドランプ（２１）の上端は、前記空気導入口（２８）の上端よりも上方に位置することを特徴とする請求項１に記載の風防装置。  The windshield device according to claim 1, wherein an upper end of the headlamp (21) is located above an upper end of the air inlet (28). 前記空気流路（３０）の左右幅は、前記空気導入口（２８）側から前記空気吹き出し口（２９）側に向けて広がるように滑らかに徐変して形成され、  The left and right width of the air flow path (30) is formed by gradually and gradually changing so as to spread from the air inlet (28) side toward the air outlet (29) side,
前記空気流路（３０）の前後厚さは、前記空気導入口（２８）側から前記空気吹き出し口（２９）側に向けて狭まるように滑らかに徐変して形成され、  The front and rear thickness of the air flow path (30) is formed by gradually and gradually changing so as to narrow from the air inlet (28) side toward the air outlet (29) side,
前記空気流路（３０）における空気流動方向と直交する断面での断面積は、前記空気導入口（２８）から前記空気吹き出し口（２９）に至るまで略同一とされることを特徴とする請求項１又は２に記載の風防装置。  The cross-sectional area in a cross section orthogonal to the air flow direction in the air flow path (30) is substantially the same from the air inlet (28) to the air outlet (29). Item 3. A windshield device according to item 1 or 2. 前記副整流板（３４，３４’）は、前記空気導入口（２８）から前記空気流路（３０）の中間部でかつ前記湾曲部（３０ａ）の上端部に至るまで設けられることを特徴とする請求項１から３の何れか１項に記載の風防装置。  The sub-rectifying plate (34, 34 ') is provided from the air introduction port (28) to an intermediate portion of the air flow path (30) and an upper end portion of the curved portion (30a). The windshield device according to any one of claims 1 to 3.
JP2007026776A 2007-02-06 2007-02-06 Draft shield Expired - Fee Related JP5020653B2 (en)

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JP2007026776A JP5020653B2 (en) 2007-02-06 2007-02-06 Draft shield
TW097100692A TWI394679B (en) 2007-02-06 2008-01-08 Windshield device
IT000051A ITTO20080051A1 (en) 2007-02-06 2008-01-24 WINDSHIELD DEVICE, AND A FRESH AIR FLOW DEVICE FOR DRIVER-TYPE VEHICLE IN A SEATED POSITION.
DE102008007041A DE102008007041B4 (en) 2007-02-06 2008-01-31 Windscreen device and cooling air guiding device for vehicle with seat saddle
CN2008100071266A CN101239635B (en) 2007-02-06 2008-02-01 Windshield device and cool airflow device for saddle ride type vehicle
US12/024,890 US7686369B2 (en) 2007-02-06 2008-02-01 Windshield device, and cool airflow device for saddle ride type vehicle

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