JPH0143358Y2 - - Google Patents
Info
- Publication number
- JPH0143358Y2 JPH0143358Y2 JP1984078131U JP7813184U JPH0143358Y2 JP H0143358 Y2 JPH0143358 Y2 JP H0143358Y2 JP 1984078131 U JP1984078131 U JP 1984078131U JP 7813184 U JP7813184 U JP 7813184U JP H0143358 Y2 JPH0143358 Y2 JP H0143358Y2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- air
- transmission case
- chamber
- engine body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 89
- 238000001816 cooling Methods 0.000 claims description 10
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
Description
【考案の詳細な説明】
Ａ 考案の目的
(1) 産業上の利用分野
本考案は、自動二輪車等の車両において、エン
ジンと後車輪とを連動する伝動装置を収容した伝
動室の冷却空気排出促進装置に関するものであ
る。[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention promotes the discharge of cooling air from the transmission chamber that houses the transmission device that interlocks the engine and rear wheels in vehicles such as motorcycles. It is related to the device.
(2) 従来の技術
たとえば自動二輪車のエンジンと伝動部とを含
むパワーユニツトにおいて、前記伝動部の伝動室
内に、外気を強制的に流通させ、これにより伝動
室内の無段変速機を含む変速機構を空冷却するよ
うにしたものは、特開昭58−109762号に開示され
ている。(2) Prior Art For example, in a power unit of a motorcycle that includes an engine and a transmission section, outside air is forced to flow into the transmission chamber of the transmission section, thereby causing a transmission mechanism including a continuously variable transmission in the transmission chamber. An air-cooled device is disclosed in Japanese Patent Application Laid-open No. 109762/1983.
(3) 考案が解決しようとする問題点
ところで従来公知の伝動室の強制空冷装置で
は、伝動ケースの前部に開口した空気取入口から
外気を導入し、それを伝動ケースの後部に開口し
た空気排出口より排出するようにしており前記伝
動ケースの下面に沿つて流れる飛沫や塵埃を含ん
だ走行風が空気排出口を通つて伝動室内に侵入
し、また該排出口近傍に巻込まれて伝動室内の冷
却空気の円滑な排出を妨げる等の問題があつた。(3) Problems that the invention aims to solve By the way, in conventionally known forced air cooling devices for transmission chambers, outside air is introduced through an air intake opening at the front of the transmission case, and then it is fed into an air cooling system through an air intake opening at the rear of the transmission case. The air is discharged from the air outlet, and the running wind containing droplets and dust flowing along the lower surface of the transmission case enters the transmission chamber through the air outlet, and is also caught near the air outlet and flows into the transmission chamber. There were problems such as preventing the smooth discharge of cooling air.
そこで本考案は伝動ケースの下面に沿つて流れ
る走行風をその下面より剥離させ、空気排出口よ
り離れるように誘導して前記問題を解決できるよ
うにした、構成簡単な車両における伝動室の冷却
空気排出促進装置を提供することを目的とするも
のである。 Therefore, the present invention solves the above problem by separating the running air flowing along the lower surface of the transmission case from the lower surface and guiding it away from the air outlet.The present invention solves the above problem by separating the running air flowing along the lower surface of the transmission case from the lower surface and guiding it away from the air outlet. The object of the present invention is to provide a discharge promoting device.
Ｂ 考案の構成
(1) 問題点を解決するための手段
本考案によれば前記目的達成のため、エンジン
本体の一側に伝動ケースを設け、この伝動ケース
内に、前記エンジン本体のクランク軸と伝動ケー
スに支持される出力軸とを連動する伝動系を収容
してなる車両において、前記伝動ケースの前部に
空気取入口を、またその後部に空気排出口をそれ
ぞれ開口し、さらに前記空気排出口の下方におい
て、前記伝動ケースの後部に、この伝動ケースの
下面に沿つて流れる走行風を該下面より剥離させ
るように誘導する案内板を設ける。B. Structure of the invention (1) Means for solving the problems According to the invention, in order to achieve the above object, a transmission case is provided on one side of the engine body, and the crankshaft of the engine body and the crankshaft of the engine body are installed in this transmission case. In a vehicle that houses a transmission system that interlocks an output shaft supported by a transmission case, an air intake port is opened at the front of the transmission case, an air exhaust port is opened at the rear thereof, and the air exhaust port is opened at the rear of the transmission case. Below the outlet, a guide plate is provided at the rear of the transmission case to guide the traveling wind flowing along the lower surface of the transmission case so as to separate it from the lower surface.
(2) 作用
前記構成によれば伝動ケースの下面に沿つて流
れる走行風は案内板によつて空気排出口から剥離
され下向きに誘導される。(2) Effect According to the above configuration, the traveling wind flowing along the lower surface of the transmission case is separated from the air outlet by the guide plate and guided downward.
(3) 実施例
以下、図面により本考案装置を自動二輪車用パ
ワーユニツトに実施した場合の実施例について説
明する。(3) Embodiments Hereinafter, embodiments in which the device of the present invention is implemented in a power unit for a motorcycle will be described with reference to the drawings.
自動二輪車の車体にパワーユニツトＰが懸架さ
れ、このパワーユニツトＰは、エンジン本体１
と、該本体１の一側下部に隣接して連設される伝
動部２およびこの伝動部２の後部に支持される後
車輪Ｗとを備える。 A power unit P is suspended on the body of a motorcycle, and this power unit P is connected to an engine body 1.
The main body 1 includes a transmission section 2 adjacent to and connected to a lower portion of one side of the main body 1, and a rear wheel W supported at the rear of the transmission section 2.
前記伝動部２はエンジン本体１の下部より後方
にのびており、その伝動ケース３は、クランクケ
ース４の外側壁４1、その後部に連結ボルト７で
固着されるミツシヨンカバー５および前記外側壁
４1とミツシヨンカバー５の外側面に弾性シール
部材３０を介して連結ボルト８で固着されるカバ
ーケース６とより構成される。クランクケース４
の前部には、エンジン本体１の一部をなすクラン
ク室９が形成され、また伝動ケース３内には前記
クランク室９に隣接して伝動室１０が形成され
る。クランク室９には、クランク軸１１が回転自
在に横架され、このクランク軸１１のクランクピ
ンには、コンロツド１２を介してエンジン本体１
のシリンダ１３内に摺合されるピストン１４が連
結される。また伝動ケース３の後部には、クラン
クケース４の外側壁４1後部と前記ミツシヨンカ
バー５とで、ギヤ室１５が形成され、このギヤ室
１５に前記クランク軸１１と平行な出力軸１６が
回転自在に横架されている。 The transmission part 2 extends rearward from the lower part of the engine body 1, and the transmission case 3 includes an outer wall 4 1 of the crankcase 4, a transmission cover 5 fixed to the rear part thereof with connecting bolts 7, and the outer wall 4. 1 and a cover case 6 fixed to the outer surface of the mission cover 5 with a connecting bolt 8 via an elastic seal member 30. crank case 4
A crank chamber 9, which is a part of the engine body 1, is formed in the front part of the engine body 1, and a transmission chamber 10 is formed in the transmission case 3 adjacent to the crank chamber 9. A crankshaft 11 is horizontally suspended in the crank chamber 9 so as to be freely rotatable, and a crank pin of the crankshaft 11 is connected to the engine body 1 via a connecting rod 12.
A piston 14 that slides into the cylinder 13 is connected. Further, at the rear of the transmission case 3, a gear chamber 15 is formed by the rear of the outer wall 41 of the crankcase 4 and the transmission cover 5, and an output shaft 16 parallel to the crankshaft 11 is formed in the gear chamber 15. It is suspended horizontally so that it can rotate freely.
伝動ケース３の伝動室１０内には、伝動系、す
なわち後述するＶベルト式自動無段変速機Ｔおよ
び減速歯車機構Ｒが収容される。前記無段変速機
Ｔは、クランク軸１１と出力軸１６とを連結し、
従来公知の構造のものであるので、その構造を簡
単に説明する。クランク軸１１の一端には、可変
径型ドライブプーリ１７が設けられ、また出力軸
１６の一端部には、前記ドライブプーリ１７より
も大径の可変径型ドリブンプーリ１８が設けら
れ、それらのプーリ１７，１８間に無端状のＶベ
ルト１９が懸回される。前記ドライブプーリ１７
はクランク軸１１に固着される固定ドライブプー
リ半体１７1と、クランク軸１１に軸方向に摺動
可能に支承される可動ドライブプーリ半体１７2
とより構成され、この可動ドライブプーリ半体１
７2は遠心力をうけてこれを固定ドライブプーリ
半体１７1に近づける方向に移動させる変速用ウ
エイトローラ２０を備えている。また前記ドリブ
ンプーリ１８は、出力軸１６上に回転自在に支承
される中空のプーリ軸２１に固着される固定ドリ
ブンプーリ半体１８1と前記プーリ軸２１上に軸
方向に摺動自在に支承される可動ドリブンプーリ
半体１８2とより構成され、可動ドリブンプーリ
半体１８2は、ばね２２により固定ドリブンプー
リ半体１８1に近づくように偏倚される。 The transmission chamber 10 of the transmission case 3 accommodates a transmission system, that is, a V-belt type automatic continuously variable transmission T and a reduction gear mechanism R, which will be described later. The continuously variable transmission T connects the crankshaft 11 and the output shaft 16,
Since it has a conventionally known structure, its structure will be briefly explained. A variable diameter drive pulley 17 is provided at one end of the crankshaft 11, and a variable diameter driven pulley 18 having a larger diameter than the drive pulley 17 is provided at one end of the output shaft 16. An endless V-belt 19 is suspended between 17 and 18. The drive pulley 17
A fixed drive pulley half 17 1 is fixed to the crankshaft 11, and a movable drive pulley half 17 2 is slidably supported on the crankshaft 11 in the axial direction.
This movable drive pulley half 1
7 2 is equipped with a speed change weight roller 20 that receives centrifugal force and moves it in a direction closer to the fixed drive pulley half 17 1 . Further, the driven pulley 18 includes a fixed driven pulley half 18 1 fixed to a hollow pulley shaft 21 that is rotatably supported on the output shaft 16 and a fixed driven pulley half 18 1 that is slidably supported on the pulley shaft 21 in the axial direction. The movable driven pulley half 18 2 is biased by a spring 22 toward the fixed driven pulley half 18 1 .
出力軸１６上の、前記ドリブンプーリ１８の外
側には自動発進用遠心クラツチＣが設けられる。
このクラツチＣは従来公知の構造を備えており、
プーリ軸２１の回転速度が設定値を超えると、プ
ーリ軸２１が前記クラツチＣを介して出力軸１６
に結合されるようになつている。 A centrifugal clutch C for automatic starting is provided on the output shaft 16 and outside the driven pulley 18.
This clutch C has a conventionally known structure,
When the rotation speed of the pulley shaft 21 exceeds the set value, the pulley shaft 21 is rotated through the clutch C to the output shaft 16.
It is now being combined with
前記クランクケース４の外側壁４1後部とミツ
シヨンカバー５とによつて前記ギヤ室１５が形成
され、このギヤ室１５内に減速歯車機構Ｒが組込
まれている。前記ギヤ室１５には、前記出力軸１
６、減速軸２４および車軸２５が互いに平行に回
転自在に横架されており、出力軸１６と一体の駆
動歯車２６は、減速軸２４と一体の第１減速歯車
２７に噛合され、さらに減速軸２４と一体の第２
減速歯車２８は車軸２５と一体の第３減速歯車２
９に噛合されている。車軸２５は、その半部がギ
ヤ室１５外に突出してそこに前記後車輪Ｗが固着
される。したがつてエンジン本体１の運転により
クランク軸１１が回転されると、その回転は、Ｖ
ベルト式自動無段変速機Ｔ、遠心クラツチＣを介
して出力軸１６に伝達され、さらにこれにより減
速歯車機構Ｒを介して後車輪Ｗに伝達される。 The gear chamber 15 is formed by the rear part of the outer wall 41 of the crankcase 4 and the transmission cover 5, and a reduction gear mechanism R is incorporated in the gear chamber 15. The gear chamber 15 includes the output shaft 1
6. A reduction shaft 24 and an axle shaft 25 are horizontally mounted parallel to each other so as to be freely rotatable, and a drive gear 26 integrated with the output shaft 16 is meshed with a first reduction gear 27 integrated with the reduction shaft 24, and further connected to the reduction shaft 24. 24 and the second one
The reduction gear 28 is the third reduction gear 2 integrated with the axle 25.
It is engaged with 9. A half portion of the axle 25 protrudes outside the gear chamber 15, and the rear wheel W is fixed thereto. Therefore, when the crankshaft 11 is rotated by the operation of the engine body 1, the rotation is V
The signal is transmitted to the output shaft 16 via the belt-type automatic continuously variable transmission T and the centrifugal clutch C, and is further transmitted to the rear wheels W via the reduction gear mechanism R.
クランク軸１１の、前記無段変速機Ｔと反対側
の端部には、交流発電機Ａが連結される。 An alternator A is connected to an end of the crankshaft 11 on the opposite side from the continuously variable transmission T.
第２，３図に示すように前記クランクケース４
の外側壁４1の外面には、弾性シール部材３１を
介して断熱板３２が複数本の取付ボルト３３によ
つて固着され、この断熱板３２は前記伝動室１０
の一部を画成している。また前記断熱板３２はク
ランクケース４の外側壁４1と協働して伝動室１
０とクランク室９との間に前後方向に長い導風通
路３４を画成している。第３図に示すようにクラ
ンクケース４の前壁には、前記導風通路３４に連
通する風入口３５が開口され、この風入口３５の
前面にフイルタ３６が設けられる。第２，３図に
示すように導風通路３４の後部下方において、ク
ランクケース４の外側壁４1の底面には、前記導
風通路３４に連通する排風口３７が開口されてお
り、この排風口３７の上方には、クランクケース
４の外側壁４1より一体にのびる排風壁３８が略
水平に設けられ、この排風壁３８は、前記排風口
３７の上方を覆い、前記排風口３７から導風通路
３４内に飛沫や塵埃等が浸入するのを阻止する。
したがつて車両が走行するとクランクケース４の
前壁面に当つた走行風の一部は風入口３５より導
風通路３４内に流入し、第２，３図矢印ａで示す
ように該通路３４内を後方へ流れた後、排風口３
７より外部に排出される。これによりクランク室
９と伝動室１０間には冷たい空気よりなる断熱空
気層が形成され、エンジン本体１の運転によつて
発生する熱が伝動室１０、すなわち無段変速機Ｔ
に伝わりにくくなつている。 As shown in FIGS. 2 and 3, the crankcase 4
A heat insulating plate 32 is fixed to the outer surface of the outer wall 4 1 of the transmission chamber 10 with a plurality of mounting bolts 33 via an elastic seal member 31 .
It forms part of the Further, the heat insulating plate 32 cooperates with the outer wall 41 of the crankcase 4 to
A wind guide passage 34 that is long in the front-rear direction is defined between the engine 0 and the crank chamber 9. As shown in FIG. 3, an air inlet 35 communicating with the air guide passage 34 is opened in the front wall of the crankcase 4, and a filter 36 is provided in front of the air inlet 35. As shown in FIGS. 2 and 3, an air exhaust port 37 that communicates with the air guide passage 34 is opened at the bottom of the outer wall 41 of the crankcase 4 at the lower rear of the air guide passage 34. Above the air outlet 37, an air exhaust wall 38 extending integrally from the outer wall 41 of the crankcase 4 is provided substantially horizontally. This prevents droplets, dust, etc. from entering the air guide passage 34 from the inside.
Therefore, when the vehicle is running, a portion of the running air that hits the front wall of the crankcase 4 flows into the air guiding passage 34 through the air inlet 35 and flows into the passage 34 as shown by arrow a in FIGS. After flowing backward, the air exhaust port 3
7 and is discharged to the outside. As a result, a heat insulating air layer made of cold air is formed between the crank chamber 9 and the transmission chamber 10, and heat generated by the operation of the engine body 1 is transferred to the transmission chamber 10, that is, the continuously variable transmission T.
It's getting harder to convey to people.
第１〜３図に示すように伝動ケース３の一部を
構成するカバーケース６の前部側面には空気取入
通路４０が一体に形成され、この通路４０の外端
には、空気取入口４１が上向きに開口され、また
その内端には、前記ドライブプーリ１７の中心に
対向して伝動室１０内に連通する空気排出口４２
が開口される。 As shown in FIGS. 1 to 3, an air intake passage 40 is integrally formed on the front side surface of the cover case 6 that constitutes a part of the transmission case 3. An air intake passage 40 is formed at the outer end of the passage 40. 41 is opened upward, and an air outlet 42 is provided at the inner end thereof, facing the center of the drive pulley 17 and communicating with the inside of the transmission chamber 10.
is opened.
ドライブプーリ１７の固定ドライブプーリ半体
１７1の背面には吸入用遠心フアン４３が一体に
設けられ、またその可動ドライブプーリ半体１７
２の外周面には、軸流フアン４４が一体に設けら
れ、この軸流フアン４４は伝動室１０内に流入し
た空気を第１〜３図矢印ｂに示すように無段変速
機Ｔの外周に沿つて流れるように誘導する。 A suction centrifugal fan 43 is integrally provided on the back side of the fixed drive pulley half 17 1 of the drive pulley 17, and the movable drive pulley half 17
An axial flow fan 44 is integrally provided on the outer circumferential surface of the transmission chamber 2 , and this axial flow fan 44 directs the air flowing into the transmission chamber 10 to the outer circumference of the continuously variable transmission T as shown by arrow b in FIGS. guide it to flow along.
第２〜５図に示すように、前記ドリブンプーリ
１８の後方において、前記カバーケース６の後壁
には、空気排出口４５が開口されるとともにその
排出口４５の直前に数枚の邪魔板４６1，４６2に
よつて迂回通路４６が形成されている。 As shown in FIGS. 2 to 5, an air outlet 45 is opened in the rear wall of the cover case 6 behind the driven pulley 18, and several baffle plates 46 are provided just before the outlet 45. A detour passage 46 is formed by 1 and 462 .
また第４，５図に明瞭に示すように、前記空気
排出口４５の下方において、カバーケース６の後
面には走行風の案内板４７が後方に向い若干下向
きに延設されており、この案内板４７は、第１，
４図矢印ｃに示すように、伝動ケース３の下面を
流れる走行風を該下面から剥離して下向きに流れ
るように誘導する。 Further, as clearly shown in FIGS. 4 and 5, below the air outlet 45, on the rear surface of the cover case 6, there is a running air guide plate 47 facing rearward and extending slightly downward. The plate 47 includes the first,
As shown by arrow c in FIG. 4, the wind flowing through the lower surface of the transmission case 3 is separated from the lower surface and guided to flow downward.
次に本発明の実施例の作用について説明する。 Next, the operation of the embodiment of the present invention will be explained.
いまエンジンが運転されれば、クランク軸１１
の回転は、前記Ｖベルト式自動無段変速機Ｔおよ
びクラツチＣを介して後車輪Ｗに伝達され、通常
のようにエンジンのスロツトル操作と車両の走行
条件によつて変速比が自動的に可変制御される。 If the engine is running now, the crankshaft 11
The rotation is transmitted to the rear wheels W via the V-belt type automatic continuously variable transmission T and clutch C, and the gear ratio is automatically varied according to the engine throttle operation and vehicle running conditions as usual. controlled.
ところで車両の走行によつて、伝動ケース３の
前面に当つた冷たい走行風の一部は第２〜５図矢
印ａで示すようにフイルタ３６を有する風入口３
５を通つて導風通路３４に導かれ、該導風通路３
４を後方へと流れ、排風口３７より外部に排出す
る。而して導風通路３４を流れる冷たい走行風
は、エンジン本体１のクランク室９と、無段変速
機Ｔの収容される伝動室１０間に断熱空気層を形
成し、しかも該空気層が伝動室１０を区画する断
熱板３２の断熱作用と協働して、エンジンより発
散する熱の、エンジン本体１から伝動室１０への
伝達が極力低減され、伝動室１０内のエンジンの
燃焼熱による温度上昇が抑制される。 By the way, as the vehicle is running, a portion of the cold running air that hits the front surface of the transmission case 3 is transferred to the air inlet 3 having a filter 36 as shown by arrow a in FIGS. 2 to 5.
5 to the air guide passage 34, and the air guide passage 3
4 flows rearward and is discharged to the outside from the exhaust port 37. The cold running wind flowing through the air guide passage 34 forms an insulating air layer between the crank chamber 9 of the engine body 1 and the transmission chamber 10 in which the continuously variable transmission T is housed, and this air layer In cooperation with the heat insulating effect of the heat insulating plate 32 that partitions the chamber 10, the transmission of the heat emitted by the engine from the engine body 1 to the transmission chamber 10 is reduced as much as possible, and the temperature in the transmission chamber 10 due to the combustion heat of the engine is reduced. The rise is suppressed.
また第２，３図矢印ｂに示すように、固定ドラ
イブプーリ半体１７1背面の遠心フアン４３は外
気を空気取入口４１より空気取入通路４０を通し
て伝動室１０内に吸入し、さらに可動ドライブプ
ーリ半体１７2外周の軸流フアン４４は伝動室１
０内に吸引された、冷たい空気をドライブプーリ
１７の軸方向に導く。これによりドライブプーリ
１７の発熱部、すなわち該プーリ１７とＶベルト
１９との接触部が前記冷たい空気によつて効果的
に冷却される。ドライブプーリ１７の外周を流れ
た空気は、伝動室１０内を無段変速機Ｔに沿つて
後方へ流れ、該変速機Ｔのドリプンプーリ１８を
含む後半部をも冷却して空気排出口４５より外部
に放出される。 Further, as shown by arrow b in FIGS. 2 and 3, the centrifugal fan 43 on the back of the fixed drive pulley half 171 sucks outside air from the air intake port 41 through the air intake passage 40 into the transmission chamber 10, and then The pulley half body 17 2 The axial flow fan 44 on the outer periphery is the transmission chamber 1
The cold air sucked into the drive pulley 17 is guided in the axial direction of the drive pulley 17. As a result, the heat generating portion of the drive pulley 17, that is, the contact portion between the pulley 17 and the V-belt 19, is effectively cooled by the cold air. The air that has flowed around the outer circumference of the drive pulley 17 flows backward in the transmission chamber 10 along the continuously variable transmission T, cools the rear half of the transmission T including the drip pulley 18, and then exits from the air outlet 45. is released.
また車両の走行により第１，４図矢印ｃに示す
ように伝動ケース３の下面に沿つて流れる層流状
の空気流は前記案内板４７に当つて乱流状の流れ
となり、伝動ケース３の下面よりよく剥離して下
向きに流れる。したがつて伝動ケース３下の飛沫
や塵埃などを含んだ空気流が伝動ケース３の後壁
面に沿つて巻上げられることがなく、前記飛沫や
塵埃などが前記空気排出口４５を通つて伝動室１
０内に逆流したり、また伝動室１０内を流れる冷
却空気の流れが妨げられたりすることがない。 Furthermore, as the vehicle travels, the laminar air flow flowing along the lower surface of the transmission case 3 as shown by arrow c in FIGS. 1 and 4 hits the guide plate 47 and becomes a turbulent flow, causing It separates better from the lower surface and flows downward. Therefore, the air flow containing splashes and dust under the transmission case 3 is not rolled up along the rear wall surface of the transmission case 3, and the droplets and dust flow through the air outlet 45 and into the transmission chamber 1.
0, and the flow of cooling air flowing through the transmission chamber 10 is not obstructed.
Ｃ 考案の効果
以上のように本考案によれば、伝動系を収容し
た伝動ケースの前部に空気取入口を、またその後
部に空気排出口をそれぞれ開口し、さらに前記空
気排出口の下方において、伝動ケースの後部に、
該伝動ケースの下面に沿つて流れる走行風を該下
面より剥離させるように誘導する案内板を設けた
ので、伝動ケースの下面に沿つて流れる、飛沫や
塵埃を含んだ空気流が、該伝動ケースの後面に巻
込まれることがなく、前記空気流が伝動室内に逆
流したり、冷却空気の排気抵抗になつたりするこ
とがなく、伝動系の円滑な作動を保障し、該系の
各部品の寿命延長を図ることができ、かつ冷却空
気の円滑な排出により伝動系の冷却能率を大幅に
高めることができる。C. Effects of the invention As described above, according to the invention, an air intake port is opened at the front part of the transmission case housing the transmission system, an air exhaust port is opened at the rear part of the transmission case, and an air exhaust port is opened below the air exhaust port. , at the rear of the transmission case.
Since a guide plate is provided that guides the traveling wind flowing along the lower surface of the transmission case so as to separate it from the lower surface, the air flow containing splashes and dust flowing along the lower surface of the transmission case is directed toward the transmission case. It does not get caught in the rear surface, the air flow does not flow back into the transmission chamber, and it does not act as exhaust resistance for cooling air, ensuring smooth operation of the transmission system and extending the service life of each part of the system. The cooling efficiency of the transmission system can be greatly increased due to the smooth discharge of cooling air.
図面は本考案装置の一実施例を示すもので、第
１図はその側面図、第２図はその要部を示す、第
３図−線に沿う断面図、第３図は第２図−
線に沿う断面図、第４図は第３図−線に沿
うカバーケースの一部側面図、第５図は第４図
−線に沿う断面図である。
１……エンジン本体、３……伝動ケース、１１
……クランク軸、１６……出力軸、４１……空気
取入口、４２……空気排出口、４７……案内板。
The drawings show an embodiment of the device according to the present invention, and FIG. 1 is a side view thereof, FIG. 2 is a sectional view taken along the line of FIG. 3, and FIG.
4 is a partial side view of the cover case taken along the line of FIG. 3, and FIG. 5 is a sectional view taken along the line of FIG. 4. 1...Engine body, 3...Transmission case, 11
... Crankshaft, 16 ... Output shaft, 41 ... Air intake port, 42 ... Air discharge port, 47 ... Guide plate.
Claims (1)
この伝動ケース３内に、前記エンジン本体１のク
ランク軸１１と伝動ケース３に支持される出力軸
１６とを連動する伝動系を収容してなる車両にお
いて、前記伝動ケース３の前部に空気取入口４１
を、またその後部に空気排出口４５をそれぞれ開
口し、さらに前記空気排出口４５の下方におい
て、前記伝動ケース３の後部に、この伝動ケース
３の下面に沿つて流れる走行風を該下面より剥離
させるように誘導する案内板４７を設けたことを
特徴とする車両における伝動室の冷却空気排出促
進装置。 A transmission case 3 is provided on one side of the engine body 1,
In a vehicle in which the transmission case 3 houses a transmission system that interlocks the crankshaft 11 of the engine body 1 and the output shaft 16 supported by the transmission case 3, an air vent is provided at the front of the transmission case 3. Entrance 41
and an air exhaust port 45 is opened at the rear thereof, and below the air exhaust port 45, the running wind flowing along the lower surface of the transmission case 3 is separated from the lower surface of the rear portion of the transmission case 3. 1. A cooling air discharge promoting device for a transmission chamber in a vehicle, characterized in that a guide plate 47 is provided for guiding the cooling air to the transmission chamber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984078131U JPS60188690U (en) | 1984-05-28 | 1984-05-28 | Cooling air discharge promotion device for transmission chamber in vehicle |
| US06/738,676 US4671782A (en) | 1984-05-28 | 1985-05-28 | Cooler for a belt type stageless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984078131U JPS60188690U (en) | 1984-05-28 | 1984-05-28 | Cooling air discharge promotion device for transmission chamber in vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60188690U JPS60188690U (en) | 1985-12-13 |
| JPH0143358Y2 true JPH0143358Y2 (en) | 1989-12-15 |
Family
ID=30621829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984078131U Granted JPS60188690U (en) | 1984-05-28 | 1984-05-28 | Cooling air discharge promotion device for transmission chamber in vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60188690U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729634B2 (en) * | 1986-01-31 | 1995-04-05 | ヤマハ発動機株式会社 | Drive unit |
| JP2513407Y2 (en) * | 1989-08-08 | 1996-10-09 | 本田技研工業株式会社 | Motorcycle power transmission device |
| JP2008201230A (en) * | 2007-02-19 | 2008-09-04 | Yamaha Motor Co Ltd | Saddle-ride type vehicle |
| JP2012051505A (en) * | 2010-09-02 | 2012-03-15 | Kubota Corp | Working vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852366U (en) * | 1981-10-05 | 1983-04-09 | 株式会社日立製作所 | Mechanical seal for high-speed small rotating machines |
| JPS58109762A (en) * | 1981-12-24 | 1983-06-30 | Honda Motor Co Ltd | Cooler for automatic belt speed changer |
-
1984
- 1984-05-28 JP JP1984078131U patent/JPS60188690U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852366U (en) * | 1981-10-05 | 1983-04-09 | 株式会社日立製作所 | Mechanical seal for high-speed small rotating machines |
| JPS58109762A (en) * | 1981-12-24 | 1983-06-30 | Honda Motor Co Ltd | Cooler for automatic belt speed changer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60188690U (en) | 1985-12-13 |
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