JP3562279B2 - Automatic belt cooling system for scooter type vehicle - Google Patents

Automatic belt cooling system for scooter type vehicle Download PDF

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Publication number
JP3562279B2
JP3562279B2 JP34540597A JP34540597A JP3562279B2 JP 3562279 B2 JP3562279 B2 JP 3562279B2 JP 34540597 A JP34540597 A JP 34540597A JP 34540597 A JP34540597 A JP 34540597A JP 3562279 B2 JP3562279 B2 JP 3562279B2
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Japan
Prior art keywords
belt
fender
closed space
automatic transmission
vehicle body
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JP34540597A
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Japanese (ja)
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JPH11171079A (en
Inventor
康博 重田
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J15/00Mud-guards for wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/08Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2202/00Motorised scooters

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、スクータ型車両のベルト自動変速機冷却装置に関する。
【0002】
【従来の技術】
例えばスクータ型車両に用いられているユニットスイング型エンジンには、ベルト式自動変速機を備えたものがある。
【0003】
このベルト式自動変速機は伝導ケース内のベルト室に収容され、しかも、ドライブプーリおよびドリブンプーリとVベルトとの接触部等の発熱部を有するため、ベルト室内の温度が上昇しやすくなる。特に伝導ケースをコンパクト化したものではその傾向が大きくなり、Vベルトは発熱により劣化が早められる不具合がある。
【0004】
そこで、伝導ケースに外気取入口を設け、この外気取入口から外気をベルト室内に導入し、発熱部を冷却するものがある。
【0005】
自動変速機の冷却装置例としては、例えば特公昭62−29276号公報に示すように、変速機カバー面に外気吸入口を形成し、この吸入口にコネクチングパイプを介して外気吸入チューブを接続すると共に、この外気吸入チューブ先端の外気吸入口を車体カバーとシートとに囲まれた空間内に開口させたものがある。
【0006】
ところで、外気吸入チューブ先端の外気吸入口は車体カバーに固定されるが、ユニットスイング型エンジンは路面の状況に応じてピボット軸を中心に上下にスイングするため、外気吸入チューブには柔軟性を有するものが用いられている。
【0007】
【発明が解決しようとする課題】
ところで、後輪の上方には車体カバーとシートとに囲まれた空間内に後輪が巻き上げる泥や水等の異物が侵入するのを防ぐためにリヤフェンダが設けられている。そして、このリヤフェンダに設けられた孔を通じて外気吸入チューブが上記空間内に延びている。
【0008】
しかしながら、外気吸入チューブは路面の状況に応じて頻繁に動くため、リヤフェンダに設けられる孔をチューブ径より若干大きめに形成しなければ外気吸入チューブが孔と擦れて破損するといった支障を起こす虞が生じる。
【0009】
一方、上記孔をチューブ径より大きめに形成することによりそこに生じる隙間から車体カバーとシートとに囲まれた空間内に後輪が巻き上げる泥や水等の異物が侵入する虞が生じる。
【0010】
本発明は上述した事情を考慮してなされたもので、後輪が巻き上げる異物の車体カバーとシートとに囲まれた空間内への侵入の防止を図ったスクータ型車両のベルト自動変速機冷却装置を提供することを目的とする。
【0011】
【課題を解決するための手段】
本発明に係るスクータ型車両のベルト自動変速機冷却装置は、上述した課題を解決するために、請求項1に記載したように、車体の後部を車体カバーで覆い、この車体カバー上部に開閉自在の運転シートを、またこの運転シートの下方に物品収納室を、更に車体カバー下部にユニットスイング型エンジンをそれぞれ配置し、上記車体カバー下部の開口部分をリヤフェンダで塞いで上記車体カバーと上記運転シートと上記リヤフェンダとで閉塞空間を形成すると共に、上記ユニットスイング型エンジン内のベルト室内にベルト式自動変速機を備え、上記ベルト室内に外気を導入して上記ベルト式自動変速機を冷却するように構成した物品収納室を備えたスクータ型車両において、上記ベルト室内に外気を導入する導気パイプを接続し、この導気パイプの外気吸入口を上記閉塞空間内であって上記物品収納室の後方に配置する一方、上記リヤフェンダのフェンダ本体のほぼ中央に後輪形状に沿って上方に向かって円弧状に凹陥する凹陥部を形成すると共に、上記物品収納室の下方かつ上記凹陥部に隣接して上記フェンダ本体に上記導気パイプの挿通部を凹設したものである。
【0012】
また、上述した課題を解決するために、請求項2に記載したように、上記導気パイプを上記閉塞空間外の連結チューブと上記閉塞空間内の冷却ダクトとに分割し、これらの冷却ダクトと連結チューブとを上記フェンダ本体に凹設された挿通部で連結すると共に、この挿通部より内側の冷却ダクトにシール部を設けて上記閉塞空間を外部からシールさせたものである。
【0013】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【0014】
図1は、この発明を適用したスクータ型車両の一例を示す左側面図である。図1に示すように、このスクータ型車両1は車体フレーム2を有し、この車体フレーム2は上下一対のダウンチューブ3と、これらのダウンチューブ3の後端側から後方に延びる左右一対のリヤフレーム4とから構成される。
【0015】
ダウンチューブ3の前端にはヘッドパイプ5が設けられる。ヘッドパイプ5には前輪6を回動自在に支持するフロントフォーク7やハンドルバー8等が設けられ、このハンドルバー8により前輪6が左右に回動自在に操舵される。
【0016】
リヤフレーム4の上方にはヘルメット等を収納可能な物品収納室9が設けられ、物品収納室9の上方に運転シート10が開閉自在に設置される。そして、車体フレーム2はその廻りを車体カバー11により覆われる。
【0017】
図2は、車体後部の拡大側面図である。図1および図2に示すように、車体フレーム2の例えばダウンチューブ3とリヤフレーム4との結合部には左右一対の補強板12が設けられ、これらの補強板12間に架設されたピボット軸13にユニットスイング型エンジン14の前側上部がリンク15を介してスイング自在に枢着される。
【0018】
ユニットスイング型エンジン14はエンジン本体16と、このエンジン本体16の一側から後方に延びる伝導ケース17とを備える。この伝導ケース17はスイングアームを兼ねており、ダウンチューブ3の中央下部に設けられたリヤショックアブソーバ18により車体フレーム2に弾性的に支持される。そして、伝導ケース17の後端に駆動輪である後輪19が保持される。
【0019】
ところで、エンジン本体16にはエンジン吸気系20を構成するキャブレタ20aが接続され、このキャブレタ20aの上流側には同じくエンジン吸気系20を構成するエアクリーナ20bが接続される。キャブレタ20aおよびエアクリーナ20bは例えばエンジン本体16の前方上方に配置され、ユニットスイング型エンジン14と一体的にスイングする。また、エンジン吸気系20の前方下部には燃料タンク21が配置される。
【0020】
図3は、図2のIII−III線に沿うユニットスイング型エンジン14の平断面図である。図3に示すように、このユニットスイング型エンジン14の前部にエンジン本体16が配置される。このエンジン本体16は、図示しないシリンダ内の図示しないピストンの往復運動がコンロッド22を介してエンジンケース16a内に軸支されたクランクシャフト23を回転運動させるものである。
【0021】
一方、伝導ケース17は伝導ケースカバー24により覆われてその内部にベルト室25を形成し、このベルト室25内にベルト式自動変速機26が配置される。
【0022】
クランクシャフト23の左端部側には、ベルト式自動変速機26のドライブプーリ27が取り付けられており、Vベルト28を介してドリブンプーリ29にエンジン本体16の駆動力が伝達される。また、ドリブンプーリ29は伝導ケース17の後方部に設けられたドリブンシャフト30に回転自在に支持されており、ドリブンプーリ29に伝達された回転駆動力が例えば遠心クラッチ機構31を介してドリブンシャフト30に伝達される。
【0023】
このドリブンシャフト30は、歯車減速機構であり動力伝達装置でもあるミッション機構32を通じてリヤアクスル33に連結され、このミッション機構32を介して後輪19にエンジン本体16の駆動力が伝達されるようになっている。
【0024】
図4は、図2のIV−IV線に沿う断面図である。図1,図2および図4に示すように、後輪19の上方には車体カバー11と運転シート10とに囲まれた空間内に後輪19が巻き上げる泥や水等の異物が侵入するのを防ぐためのリヤフェンダ34が設けられる。
【0025】
リヤフェンダ34は主にフェンダ本体34aとエクステンション部34bとから構成される。フェンダ本体34aは車体カバー11下部の開口部分を塞ぐ例えば板状のものであって、車体カバー11と運転シート10とフェンダ本体34aとで閉塞空間35を形成し、この空間35内に前記物品収納室9が配置される。また、このフェンダ本体34aのほぼ中央には後輪19の形状に沿って上方に向かって円弧状に凹陥する凹陥部36が形成される。そして、フェンダ本体34aはボルト37等でリヤフレーム4に固定される。
【0026】
一方、リヤフェンダ34のエクステンション部34bはフェンダ本体34aの後端部から後下方に向かって延び、後輪19が跳ね上げる泥などが後上方に向かって飛び散るのを防ぐものである。エクステンション部34bはフェンダ本体34aにビス38等で結合され、さらにフェンダ本体34aと共にボルト37等でリヤフレーム4に共締めされ固定される。
【0027】
ところで、上記ベルト自動変速機26のドライブプーリ27およびドリブンプーリ29とVベルト28との接触部は摩擦によって発熱し、ベルト室25内の温度が上昇しやすくなるため、本発明に係るベルト自動変速機26には冷却装置39が設けられる。
【0028】
冷却装置39の構成は以下の通りである。すなわち、図3に示すように、ベルト式自動変速機26のドライブプーリには吸気ファン40が一体に形成される。また、伝導ケースカバー24の吸気ファン40近傍には吸気口41が形成される。そして、図2および3に示すように、伝導ケースカバー24の吸気口41には外気取入パイプ42が接続される。
【0029】
一方、上記閉塞空間35内には外気吸入口43が配置され、この外気吸入口43と外気取入パイプ42とは導気パイプ44によって連結される。また、導気パイプ44は閉塞空間35外の連結チューブ45と閉塞空間35内の冷却ダクト46とに分割され、連結チューブ45は柔軟性および伸縮性を有する素材で形成される。
【0030】
また、フェンダ本体34aには前記凹陥部36に隣接して挿通部47が上方に向かって凹設される。そして、上述した冷却ダクト46と連結チューブ45とはこの挿通部47において連結される。詳しくは、例えば冷却ダクト46の端部が挿通部47に差し込まれ、その外部に露出した部分が連結チューブ45の端部に差し込まれる。また、冷却ダクト46の挿通部47より内側にはシール部であるフランジ48が一体的に形成され、このフランジ48が挿通部47に密着する様にして固定され、冷却ダクト46がフェンダ本体34aに固定される。
【0031】
次に、本実施形態の作用について説明する。
【0032】
エンジン本体16のクランクシャフト23が回転し、その端部に取り付けられたドライブプーリ27に設けられた吸気ファン40が回転することにより、車体カバー11と運転シート10とフェンダ本体34aとで形成された閉塞空間35内の外気が外気吸入口43から冷却ダクト46、連結チューブ45および外気取入パイプ42から構成される導気パイプ44を介して伝導ケースカバー24の吸気口41よりベルト室25内に導かれ、ドライブプーリ27およびドリブンプーリ29とVベルト28との接触部等の自動変速機26各部を冷却する。
【0033】
外気吸入口43と伝導ケースカバー24の吸気口41とを連結する導気パイプ44を閉塞空間35外の連結チューブ45と閉塞空間35内の冷却ダクト46とに分割し、フェンダ本体34aに形成された挿通部47で冷却ダクト46と連結チューブ45とを連結すると共に、冷却ダクト46の挿通部47より内側にフランジ48を形成し、このフランジ48を挿通部47に密着させることにより閉塞空間35が外部からシールされるので、閉塞空間35内に後輪19が巻き上げる泥や水等の異物が侵入する虞がない。
【0034】
また、ユニットスイング型エンジン14が路面の状況に応じてピボット軸13を中心に上下にスイングしても、連動するのは閉塞空間35外の連結チューブ45のみであり、しかも連結チューブ45には柔軟性および伸縮性を有する素材を用いているので、連結チューブ45が破損するといった問題は生じない。
【0035】
【発明の効果】
以上説明したように、本発明に係るスクータ型車両のベルト自動変速機冷却装置によれば、車体の後部を車体カバーで覆い、この車体カバー上部に開閉自在の運転シートを、またこの運転シートの下方に物品収納室を、更に車体カバー下部にユニットスイング型エンジンをそれぞれ配置し、上記車体カバー下部の開口部分をリヤフェンダで塞いで上記車体カバーと上記運転シートと上記リヤフェンダとで閉塞空間を形成すると共に、上記ユニットスイング型エンジン内のベルト室内にベルト式自動変速機を備え、上記ベルト室内に外気を導入して上記ベルト式自動変速機を冷却するように構成した物品収納室を備えたスクータ型車両において、上記ベルト室内に外気を導入する導気パイプを接続し、この導気パイプの外気吸入口を上記閉塞空間内であって上記物品収納室の後方に配置する一方、上記リヤフェンダのフェンダ本体のほぼ中央に後輪形状に沿って上方に向かって円弧状に凹陥する凹陥部を形成すると共に、上記物品収納室の下方かつ上記凹陥部に隣接して上記フェンダ本体に上記導気パイプの挿通部を凹設したため、閉塞空間内に後輪が巻き上げる泥や水等の異物が侵入する虞がない。
【0036】
また、上記導気パイプを上記閉塞空間外の連結チューブと上記閉塞空間内の冷却ダクトとに分割し、これらの冷却ダクトと連結チューブとを上記フェンダ本体に凹設された挿通部で連結すると共に、この挿通部より内側の冷却ダクトにシール部を設けて上記閉塞空間を外部からシールさせたため、閉塞空間内に後輪が巻き上げる泥や水等の異物が侵入する虞がないと共に、導気パイプが破損するといった問題も生じない。
【図面の簡単な説明】
【図1】本発明に係るスクータ型車両のベルト自動変速機冷却装置の一実施例を示すスクータ型車両の左側面図。
【図2】車体後部の拡大側面図。
【図3】図2のIII−III線に沿うユニットスイング型エンジンの平断面図。
【図4】図2のIV−IV線に沿う断面図。
【符号の説明】
1 スクータ型車両
2 車体フレーム
10 運転シート
11 車体カバー
14 ユニットスイング型エンジン
25 ベルト室
26 ベルト自動変速機
34 リヤフェンダ
34a フェンダ本体
34b エクステンション部
35 閉塞空間
39 冷却装置
43 外気吸入口
44 導気パイプ
45 連結チューブ
46 冷却ダクト
47 挿通部
48 フランジ(シール部)
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a belt automatic transmission cooling device for a scooter type vehicle.
[0002]
[Prior art]
For example, there is a unit swing type engine used for a scooter type vehicle equipped with a belt type automatic transmission.
[0003]
This belt-type automatic transmission is housed in a belt chamber in a transmission case, and further has a heat generating portion such as a contact portion between a drive pulley, a driven pulley and a V-belt, so that the temperature in the belt chamber easily rises. In particular, when the conduction case is made compact, the tendency is increased, and the V-belt is disadvantageously deteriorated earlier due to heat generation.
[0004]
Therefore, there is a case in which an outside air intake is provided in the conduction case, outside air is introduced into the belt chamber from the outside air intake, and the heat generating portion is cooled.
[0005]
As an example of a cooling device for an automatic transmission, as shown in, for example, Japanese Patent Publication No. 62-29276, an outside air intake port is formed on a transmission cover surface, and an outside air intake tube is connected to this intake port via a connecting pipe. In some cases, the outside air suction port at the tip of the outside air suction tube is opened in a space surrounded by a vehicle body cover and a seat.
[0006]
By the way, the outside air suction port at the tip of the outside air suction tube is fixed to the vehicle body cover, but since the unit swing type engine swings up and down around the pivot axis according to the road surface condition, the outside air suction tube has flexibility. Things are used.
[0007]
[Problems to be solved by the invention]
By the way, a rear fender is provided above the rear wheel in order to prevent foreign matter such as mud or water that the rear wheel rolls up from entering into a space surrounded by the vehicle body cover and the seat. An outside air suction tube extends into the space through a hole provided in the rear fender.
[0008]
However, since the outside air suction tube frequently moves according to the road surface condition, unless the hole provided in the rear fender is formed slightly larger than the tube diameter, the outside air suction tube may rub against the hole and be damaged. .
[0009]
On the other hand, by forming the hole larger than the tube diameter, there is a possibility that a foreign matter such as mud or water that the rear wheel rolls up may enter the space surrounded by the vehicle body cover and the seat from a gap formed there.
[0010]
SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described circumstances, and has a belt automatic transmission cooling device for a scooter-type vehicle in which foreign matter wound by a rear wheel is prevented from entering into a space surrounded by a vehicle body cover and a seat. The purpose is to provide.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problems, a belt automatic transmission cooling device for a scooter-type vehicle according to the present invention covers a rear portion of a vehicle body with a vehicle body cover and opens and closes the vehicle body cover at an upper portion thereof. An operation seat is provided, an article storage room is disposed below the operation seat, and a unit swing type engine is disposed below the vehicle body cover. The opening at the lower part of the vehicle body cover is closed with a rear fender, and the vehicle body cover and the operation seat are disposed. And a closed space formed by the rear fender and a belt-type automatic transmission in a belt chamber of the unit swing type engine. The outside air is introduced into the belt chamber to cool the belt-type automatic transmission. in the scooter type vehicle provided with a configured article housing chamber, it connects the Shirubeki pipe for introducing the outside air into the belt chamber, the Shirubeki While the outside air inlet of the type placed behind the article storage compartment A in the closed space, recess which recess arcuately upward along the rear wheel shape substantially the center of the fender body of the rear fender And an insertion portion of the air guide pipe is recessed in the fender main body below the article storage chamber and adjacent to the recessed portion .
[0012]
Further, in order to solve the above-described problem, as described in claim 2, the air guide pipe is divided into a connection tube outside the closed space and a cooling duct in the closed space, and these cooling ducts are The connecting tube is connected to the fender body by an insertion portion recessed, and a sealing portion is provided in a cooling duct inside the insertion portion to seal the closed space from the outside.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a left side view showing an example of a scooter type vehicle to which the present invention is applied. As shown in FIG. 1, the scooter-type vehicle 1 has a body frame 2. The body frame 2 has a pair of upper and lower down tubes 3 and a pair of left and right rear tubes extending rearward from the rear ends of the down tubes 3. And a frame 4.
[0015]
A head pipe 5 is provided at a front end of the down tube 3. The head pipe 5 is provided with a front fork 7 and a handlebar 8 for rotatably supporting the front wheel 6, and the handlebar 8 allows the front wheel 6 to be rotatably steered left and right.
[0016]
An article storage room 9 capable of storing a helmet or the like is provided above the rear frame 4, and a driving seat 10 is installed above the article storage chamber 9 so as to be openable and closable. The body frame 2 is covered by a body cover 11 around the body frame 2.
[0017]
FIG. 2 is an enlarged side view of the rear part of the vehicle body. As shown in FIGS. 1 and 2, a pair of left and right reinforcing plates 12 is provided at a joint portion of the body frame 2, for example, between the down tube 3 and the rear frame 4, and a pivot shaft provided between these reinforcing plates 12. The upper part of the front side of the unit swing type engine 14 is swingably connected to the unit 13 via a link 15.
[0018]
The unit swing type engine 14 includes an engine body 16 and a conduction case 17 extending rearward from one side of the engine body 16. The transmission case 17 also serves as a swing arm, and is elastically supported by the vehicle body frame 2 by a rear shock absorber 18 provided at the lower center of the down tube 3. Then, a rear wheel 19 as a driving wheel is held at the rear end of the transmission case 17.
[0019]
Incidentally, a carburetor 20a constituting the engine intake system 20 is connected to the engine body 16, and an air cleaner 20b also constituting the engine intake system 20 is connected upstream of the carburetor 20a. The carburetor 20 a and the air cleaner 20 b are arranged, for example, in front of and above the engine body 16 and swing integrally with the unit swing type engine 14. Further, a fuel tank 21 is disposed at a lower front part of the engine intake system 20.
[0020]
FIG. 3 is a plan cross-sectional view of the unit swing type engine 14 along the line III-III in FIG. As shown in FIG. 3, an engine body 16 is arranged at the front of the unit swing type engine 14. In the engine body 16, a reciprocating motion of a piston (not shown) in a cylinder (not shown) causes a crankshaft 23 pivotally supported in the engine case 16 a via a connecting rod 22 to rotate.
[0021]
On the other hand, the conductive case 17 is covered with a conductive case cover 24 to form a belt chamber 25 therein, and a belt type automatic transmission 26 is disposed in the belt chamber 25.
[0022]
A drive pulley 27 of a belt-type automatic transmission 26 is attached to the left end of the crankshaft 23, and the driving force of the engine body 16 is transmitted to a driven pulley 29 via a V-belt 28. Further, the driven pulley 29 is rotatably supported by a driven shaft 30 provided at a rear portion of the transmission case 17, and the rotational driving force transmitted to the driven pulley 29 is transmitted to the driven shaft 30 via, for example, a centrifugal clutch mechanism 31. Is transmitted to.
[0023]
The driven shaft 30 is connected to a rear axle 33 through a transmission mechanism 32 which is a gear reduction mechanism and a power transmission device, and the driving force of the engine body 16 is transmitted to the rear wheel 19 via the transmission mechanism 32. ing.
[0024]
FIG. 4 is a sectional view taken along line IV-IV in FIG. As shown in FIG. 1, FIG. 2 and FIG. 4, foreign matter such as mud and water that the rear wheel 19 rolls up enters the space surrounded by the vehicle body cover 11 and the driving seat 10 above the rear wheel 19. Is provided.
[0025]
The rear fender 34 mainly includes a fender body 34a and an extension portion 34b. The fender body 34a is, for example, a plate-like member that closes an opening at a lower portion of the body cover 11, and forms a closed space 35 with the body cover 11, the operation seat 10, and the fender body 34a. A chamber 9 is arranged. Further, a concave portion 36 is formed substantially at the center of the fender main body 34a, and is concaved upward in an arc along the shape of the rear wheel 19. The fender body 34a is fixed to the rear frame 4 with bolts 37 or the like.
[0026]
On the other hand, the extension portion 34b of the rear fender 34 extends rearward and downward from the rear end portion of the fender body 34a, and prevents the mud and the like that the rear wheel 19 jumps from scattering upward and rearward. The extension portion 34b is coupled to the fender body 34a with a screw 38 or the like, and is further fixed together with the fender body 34a to the rear frame 4 with a bolt 37 or the like.
[0027]
The contact portion between the drive pulley 27 and the driven pulley 29 of the automatic belt transmission 26 and the V-belt 28 generates heat due to friction, and the temperature in the belt chamber 25 tends to rise. The machine 26 is provided with a cooling device 39.
[0028]
The configuration of the cooling device 39 is as follows. That is, as shown in FIG. 3, the intake fan 40 is formed integrally with the drive pulley of the belt type automatic transmission 26. An intake port 41 is formed in the conduction case cover 24 near the intake fan 40. Then, as shown in FIGS. 2 and 3, an outside air intake pipe 42 is connected to the intake port 41 of the conductive case cover 24.
[0029]
On the other hand, an outside air inlet 43 is arranged in the closed space 35, and the outside air inlet 43 and the outside air intake pipe 42 are connected by an air guide pipe 44. The air guide pipe 44 is divided into a connecting tube 45 outside the closed space 35 and a cooling duct 46 inside the closed space 35, and the connecting tube 45 is formed of a material having flexibility and elasticity.
[0030]
Further, an insertion portion 47 is provided in the fender body 34a so as to be recessed upward and adjacent to the concave portion 36. The cooling duct 46 and the connection tube 45 are connected at the insertion portion 47. Specifically, for example, an end of the cooling duct 46 is inserted into the insertion portion 47, and a portion exposed to the outside is inserted into an end of the connection tube 45. Further, a flange 48 as a seal portion is integrally formed inside the insertion portion 47 of the cooling duct 46, and the flange 48 is fixed so as to be in close contact with the insertion portion 47, and the cooling duct 46 is attached to the fender body 34a. Fixed.
[0031]
Next, the operation of the present embodiment will be described.
[0032]
The crankshaft 23 of the engine body 16 rotates, and the intake fan 40 provided on the drive pulley 27 attached to the end of the engine body 16 rotates to form the vehicle body cover 11, the operation seat 10, and the fender body 34a. The outside air in the closed space 35 enters the belt chamber 25 from the outside air suction port 43 through the cooling duct 46, the connection tube 45, and the suction port 41 of the conduction case cover 24 through the air guide pipe 44 including the outside air intake pipe 42. It is guided and cools each part of the automatic transmission 26 such as a contact part between the drive pulley 27 and the driven pulley 29 and the V-belt 28.
[0033]
An air guide pipe 44 connecting the outside air suction port 43 and the suction port 41 of the conductive case cover 24 is divided into a connection tube 45 outside the closed space 35 and a cooling duct 46 inside the closed space 35, and is formed on the fender body 34a. The cooling duct 46 and the connecting tube 45 are connected to each other by the insertion portion 47, and a flange 48 is formed inside the insertion portion 47 of the cooling duct 46. The closed space 35 is formed by bringing the flange 48 into close contact with the insertion portion 47. Since it is sealed from the outside, there is no possibility that foreign matter such as mud or water that the rear wheel 19 rolls up may enter the closed space 35.
[0034]
Even if the unit swing type engine 14 swings up and down around the pivot shaft 13 according to the road surface condition, only the connecting tube 45 outside the closed space 35 is interlocked, and the connecting tube 45 is flexible. Since a material having elasticity and elasticity is used, there is no problem that the connecting tube 45 is damaged.
[0035]
【The invention's effect】
As described above, according to the belt- type automatic transmission cooling device for a scooter-type vehicle according to the present invention, the rear part of the vehicle body is covered with the vehicle body cover, and an openable and closable driving seat is provided on the upper part of the vehicle body cover. And the unit swing type engine is arranged below the body cover, and the opening at the bottom of the body cover is closed with a rear fender to form a closed space with the body cover, the driving seat and the rear fender. A scooter provided with a belt-type automatic transmission in a belt chamber in the unit swing type engine, and an article storage chamber configured to cool the belt-type automatic transmission by introducing outside air into the belt chamber. In the type vehicle, an air guide pipe for introducing outside air into the belt chamber is connected, and the outside air suction port of the air guide pipe is closed. While placing an in between the rear of the article accommodation box, to form a recess therein so as to be recessed in an arc shape upward along the rear wheel shape substantially the center of the fender body of the rear fender, the article storage Since the insertion portion of the air guide pipe is recessed in the fender body below the chamber and adjacent to the recessed portion, there is no possibility that foreign matter such as mud or water that the rear wheel rolls up in the closed space.
[0036]
Further, the air guide pipe is divided into a connection tube outside the closed space and a cooling duct in the closed space, and these cooling ducts and the connection tube are connected by an insertion portion recessed in the fender body. Since a sealing portion is provided in the cooling duct inside the insertion portion to seal the closed space from the outside, there is no risk of foreign matter such as mud or water that the rear wheel rolls up in the closed space, and the air guide pipe There is no problem such as breakage.
[Brief description of the drawings]
FIG. 1 is a left side view of a scooter type vehicle showing an embodiment of a cooling device for an automatic belt transmission of a scooter type vehicle according to the present invention.
FIG. 2 is an enlarged side view of a rear portion of the vehicle body.
FIG. 3 is a cross-sectional plan view of the unit swing type engine taken along the line III-III in FIG. 2;
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Scooter type vehicle 2 Body frame 10 Operating seat 11 Body cover 14 Unit swing type engine 25 Belt room 26 Belt automatic transmission 34 Rear fender 34a Fender body 34b Extension part 35 Closed space 39 Cooling device 43 Outside air suction port 44 Air guide pipe 45 Connection Tube 46 Cooling duct 47 Insertion part 48 Flange (seal part)

Claims (2)

車体の後部を車体カバーで覆い、この車体カバー上部に開閉自在の運転シートを、またこの運転シートの下方に物品収納室を、更に車体カバー下部にユニットスイング型エンジンをそれぞれ配置し、上記車体カバー下部の開口部分をリヤフェンダで塞いで上記車体カバーと上記運転シートと上記リヤフェンダとで閉塞空間を形成すると共に、上記ユニットスイング型エンジン内のベルト室内にベルト式自動変速機を備え、上記ベルト室内に外気を導入して上記ベルト式自動変速機を冷却するように構成した物品収納室を備えたスクータ型車両において、上記ベルト室内に外気を導入する導気パイプを接続し、この導気パイプの外気吸入口を上記閉塞空間内であって上記物品収納室の後方に配置する一方、上記リヤフェンダのフェンダ本体のほぼ中央に後輪形状に沿って上方に向かって円弧状に凹陥する凹陥部を形成すると共に、上記物品収納室の下方かつ上記凹陥部に隣接して上記フェンダ本体に上記導気パイプの挿通部を凹設したことを特徴とするスクータ型車両のベルト自動変速機冷却装置。The rear part of the vehicle body is covered with a vehicle body cover, an openable and closable operation seat is disposed above the vehicle body cover , an article storage room is disposed below the operation sheet, and a unit swing type engine is disposed below the vehicle body cover. The lower opening is closed with a rear fender to form a closed space with the vehicle body cover, the operation seat, and the rear fender, and a belt-type automatic transmission is provided in a belt room in the unit swing type engine, and the belt-type automatic transmission is provided in the belt room. In a scooter-type vehicle having an article storage chamber configured to cool the belt type automatic transmission by introducing outside air, an air guide pipe for introducing outside air into the belt chamber is connected, and the outside air of the air guide pipe is connected to the scooter type vehicle. while disposed behind the article storage chamber inlet lie in the above closed space, Ho of the fender body of the rear fender A concave portion is formed in the center to be concave upward in an arc shape along the rear wheel shape, and an insertion portion of the air guide pipe is inserted into the fender body below the article storage chamber and adjacent to the concave portion. A belt automatic transmission cooling device for a scooter type vehicle, wherein the cooling device is recessed . 上記導気パイプを上記閉塞空間外の連結チューブと上記閉塞空間内の冷却ダクトとに分割し、これらの冷却ダクトと連結チューブとを上記フェンダ本体に凹設された挿通部で連結すると共に、この挿通部より内側の冷却ダクトにシール部を設けて上記閉塞空間を外部からシールさせた請求項1記載のスクータ型車両のベルト自動変速機冷却装置。The Shirubeki pipe divided into a cooling duct in the connecting tube and the closed space outside the closed space, together with the connecting tube and these cooling ducts connecting with the insertion portion which is recessed in the fender body, this 2. The cooling apparatus for a belt automatic transmission of a scooter type vehicle according to claim 1 , wherein a seal portion is provided in a cooling duct inside the insertion portion to seal the closed space from the outside.
JP34540597A 1997-12-15 1997-12-15 Automatic belt cooling system for scooter type vehicle Expired - Fee Related JP3562279B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34540597A JP3562279B2 (en) 1997-12-15 1997-12-15 Automatic belt cooling system for scooter type vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34540597A JP3562279B2 (en) 1997-12-15 1997-12-15 Automatic belt cooling system for scooter type vehicle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2000316639A Division JP3627644B2 (en) 2000-10-17 2000-10-17 Belt automatic transmission cooling device for scooter type vehicle

Publications (2)

Publication Number Publication Date
JPH11171079A JPH11171079A (en) 1999-06-29
JP3562279B2 true JP3562279B2 (en) 2004-09-08

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Publication number Priority date Publication date Assignee Title
JP5030603B2 (en) * 2007-01-26 2012-09-19 ヤマハ発動機株式会社 Motorcycle equipped with a belt-type continuously variable transmission having a resin block belt
JP5109185B2 (en) * 2008-03-18 2012-12-26 本田技研工業株式会社 Cooling duct arrangement structure of continuously variable transmission for saddle riding type vehicle
CN101970285B (en) * 2008-03-18 2013-10-16 本田技研工业株式会社 Layout structure for cooling duct for stepless transmsiion of straddle-riding type vehicle
JP5172406B2 (en) * 2008-03-18 2013-03-27 本田技研工業株式会社 Engine suspension structure for saddle-ride type vehicles
JP5080431B2 (en) * 2008-11-28 2012-11-21 本田技研工業株式会社 Saddle riding
JP5205231B2 (en) * 2008-11-28 2013-06-05 本田技研工業株式会社 Saddle riding
JP2010215215A (en) * 2009-02-19 2010-09-30 Yamaha Motor Co Ltd Motorcycle
JP5807446B2 (en) * 2011-08-25 2015-11-10 スズキ株式会社 Engine cooling structure
JP2018058455A (en) * 2016-10-04 2018-04-12 ヤマハ発動機株式会社 Saddle-riding type vehicle

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