JPH0710675B2 - Belt type transmission - Google Patents
Belt type transmissionInfo
- Publication number
- JPH0710675B2 JPH0710675B2 JP60072375A JP7237585A JPH0710675B2 JP H0710675 B2 JPH0710675 B2 JP H0710675B2 JP 60072375 A JP60072375 A JP 60072375A JP 7237585 A JP7237585 A JP 7237585A JP H0710675 B2 JPH0710675 B2 JP H0710675B2
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- air
- belt
- transmission case
- case
- 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims description 36
- 238000001816 cooling Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 238000005192 partition Methods 0.000 description 5
- 239000007858 starting material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- General Details Of Gearings (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本体は自動二輪車の駆動機構等に用いられるベルト式伝
動装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The main body relates to a belt type transmission used in a drive mechanism of a motorcycle or the like.
（従来の技術） 自動二輪車の後輪駆動装置としてベルト・プーリ式の伝
動装置を採用する場合があるが、かかる伝動装置ではベ
ルトとプーリとの間の摩擦により熱が発生する。(Prior Art) A belt / pulley type transmission device may be adopted as a rear wheel drive device of a motorcycle, but in such a transmission device, heat is generated due to friction between the belt and the pulley.
特に無段変速式ものにおいては、可動フェースが固定フ
ェースに対し軸方向に移動し、プーリの有効径を変化さ
せて無段変速を行うため、ベルトはプーリの壁面に対し
て半径方向にも移動し、ために熱の発生は更に大きくな
る。そこでエンジンの出力軸に設けた駆動プーリにフィ
ンを付設してファンとして機能させ、伝動ケース内部に
空気流を発生させ、ベルトの冷却を行う技術が実用に供
されている。Especially in the continuously variable type, since the movable face moves in the axial direction with respect to the fixed face and changes the effective diameter of the pulley to perform continuously variable transmission, the belt also moves in the radial direction with respect to the wall surface of the pulley. However, heat generation is further increased. Therefore, a technique has been put into practical use in which a fin is attached to a drive pulley provided on an output shaft of an engine to function as a fan to generate an air flow inside the transmission case and cool the belt.
かかる従来技術はベルトの冷却効果として高いものが得
られ難い。即ち自動二輪車の伝動ケース内には一般に始
動装置等の補機類が収容され、従って伝動ケース内の空
間はベルト、プーリの収納スペースよりも大きく、ファ
ンにより冷却風がベルト以外の部分に流れてベルトの部
分に集中せず、且つ空気の流速が低くなり、ベルトの冷
却効果が低くなる。It is difficult for such a conventional technique to obtain a high belt cooling effect. That is, auxiliary equipment such as a starter is generally housed in the transmission case of the motorcycle, and therefore the space in the transmission case is larger than the storage space for the belt and the pulley, and the cooling air flows to parts other than the belt by the fan. It does not concentrate on the belt portion and the flow velocity of air becomes low, so that the belt cooling effect becomes low.
（発明が解決しようとする技術課題） そこで本出願人は先に特願昭57-163388号（特開昭59-54
856号）を提供した。(Technical problem to be solved by the invention) Therefore, the present applicant has previously filed Japanese Patent Application No. 57-163388 (Japanese Patent Laid-Open No. 59-54).
No. 856) was provided.
かかる技術では伝動ケース内部を仕切板で区画し、伝動
ケースには外気取入用の入口部を駆動プーリ側に、被動
プーリ後方に空気の排出口を設け、排出口は被動プーリ
の後方で、プーリの回転方向に対して反対側を向き、た
めに伝動ケース内の温まった空気の排出効率が悪く、そ
の対策としてファンの容量が大きなものを必要とした。In such a technology, the inside of the transmission case is divided by a partition plate, the transmission case has an inlet for outside air intake on the drive pulley side, an air outlet is provided behind the driven pulley, and the outlet is behind the driven pulley. Since it faces the opposite side to the rotating direction of the pulley, the efficiency of discharging warm air in the transmission case is poor, and a large fan capacity is required as a countermeasure.
本発明は以上の技術課題を解決すべくなされたもので、
その目的とする処は、伝動ケース内に導入した冷却空気
の排出を効率良く行わせ、伝動ケース内の冷却性を向
上、従ってベルトの冷却性の向上を図ったベルト式伝動
装置を提供するにある。The present invention has been made to solve the above technical problems,
The purpose is to provide a belt type transmission device which efficiently discharges the cooling air introduced into the transmission case, improves the cooling property in the transmission case, and thus improves the cooling property of the belt. is there.
（技術課題を解決するための手段） 以上の技術課題を解決するための手段は、走行用車両に
設けられる伝動ケース内に、駆動軸に連結され駆動プー
リと、被駆動軸に連結された被動プーリと、該プーリー
間に巻回された無端ベルトを収納したベルト式伝動装置
において、前記駆動プーリの一端面に外気取入用ファン
を設け、このファンに対応した外気取入口を前記伝動ケ
ース外側に開口させるとともに、前記被動プーリの上方
に位置する緊張側ベルトが被動プーリから離れる部位か
ら下方に向けて空気排出通路を設け、この空気排出通路
の下端を前記伝動ケース下方で外気と連通させたことで
ある。(Means for Solving the Technical Problem) The means for solving the above technical problem is to provide a driven case connected to a drive shaft and a driven shaft connected to a drive shaft in a transmission case provided in a traveling vehicle. In a belt type transmission device containing a pulley and an endless belt wound between the pulleys, an outside air intake fan is provided on one end surface of the drive pulley, and an outside air intake port corresponding to the fan is provided outside the transmission case. And an air discharge passage is provided downward from a position where the tension side belt located above the driven pulley is separated from the driven pulley, and a lower end of the air discharge passage is communicated with outside air below the transmission case. That is.
（上記手段による作用） 上記手段によれば、ケース内の冷却空気は駆動プーリ側
から被動プーリ側に流れ、被動プーリでは該プーリの回
転に伴なって流れ、かかる二つの流れはベルトが被動プ
ーリから離れる部位で衝突し、正圧が高くなり、この部
位に排出口があるためケース内の空気は効率良く排出さ
れ、ケース内の新気の導入、冷却後の排風が全体として
効率良くなされる。また、ファンで外気を直接ケース内
に取り入れるようにしたため、冷却効果を高めることが
でき、且つ、排出口は伝動ケース下方にて外気と連通す
るため、走行風による吸い出し効果により空気の排出も
円滑に行われる。従って、冷却効果が更に高められる。(Operation of the above means) According to the above means, the cooling air in the case flows from the driving pulley side to the driven pulley side, and in the driven pulley, the cooling air flows as the pulley rotates. It collides with the part away from the positive pressure, the positive pressure becomes high, and the air outlet in this part efficiently discharges the air in the case, so that the introduction of fresh air in the case and the exhaust air after cooling are efficiently performed as a whole. It Also, since the outside air is taken directly into the case by the fan, the cooling effect can be enhanced, and the exhaust port communicates with the outside air below the transmission case, so the air can be smoothly discharged by the suction effect of the running wind. To be done. Therefore, the cooling effect is further enhanced.
（実施例） 次に本発明の好適一実施例を添付図面を参照しつつ詳述
する。(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第１図は自動二輪車の概略側面図で、実施例では足載せ
フロアが低床式のものを示し、フレーム（１）の前端に
設けたヘッドチューブ（２）に前輪（３）を支持するフ
ロントフォーク（４）を操向自在に支持し、フレーム
（１）後端部にシートポストを重ねるリヤフレーム（1
a）を起設し、リヤフレーム（1a）上にはシート（５）
を配設する。Fig. 1 is a schematic side view of a motorcycle. In the embodiment, a footrest floor is a low floor type, and a front tube (3) is supported by a head tube (2) provided at a front end of a frame (1). A rear frame (1) that supports the fork (4) in a steerable manner and stacks a seat post on the rear end of the frame (1).
a) upright and seat (5) on the rear frame (1a)
To arrange.
リヤフレーム（1a）の下方でフレーム（１）の後方には
後輪（６）を支持するパワーユニット（８）をその前端
で枢着し、パワーユニット（８）の後上部とリヤフレー
ム（1a）間にはリヤクッションユニット（７）を介設す
る。Below the rear frame (1a), behind the frame (1), a power unit (8) supporting a rear wheel (6) is pivotally attached at its front end, and between the rear upper part of the power unit (8) and the rear frame (1a). A rear cushion unit (7) is installed in the vehicle.
パワーユニット（８）の詳細は第２図、第４図に示す如
くで、前部にエンジン（９）が実施例では後上傾する如
く設けられ、エンジン（９）のシリンダ上部（901）直
下のクランクケース（10）はクランクシャフト（101）
の軸方向に左右の分割されたケース（11），（12）から
なる。左ケース（12）は左側側面を開放し、凹状であっ
て後方に延出された伝動ケース部（13）を兼ね、伝動ケ
ース部（13）の開放側側面はカバー（14）で全面的に覆
われ、全体として閉じられた伝動ケース（15）を構成す
る。The details of the power unit (8) are as shown in FIGS. 2 and 4, and the engine (9) is provided in the front part so as to tilt rearward and upward in the embodiment, and is directly below the cylinder upper part (901) of the engine (9). The crankcase (10) is the crankshaft (101)
It consists of cases (11) and (12) divided into the left and right in the axial direction. The left case (12) has a left side surface open, and also serves as a transmission case section (13) that is concave and extends rearward. The open side surface of the transmission case section (13) is entirely covered with a cover (14). It constitutes a transmission case (15) which is covered and closed as a whole.
ケース部（13）の前部隔壁（131）には軸受（16）を設
けてクランクシャフト（101）の出力部（102）を伝動ケ
ース（15）内の空間（Ｓ）内に延出し、これに駆動プー
リ（17）を付設し、プーリ（17）はベルト有効径可変の
無段変速プーリとし、軸端の固定フェース（171）と軸
方向内方の可動フェース（172）とからなる。そして軸
端の固定フェース（171）の外側面にはフィン（181）…
を複数付設してプーリと一体の外気取入用ファン（18）
を構成する。ケース部（13）の後部（132）には被動軸
（19）の基端（191）を軸受（20）を介して回転自在に
支持し、軸（19）の中間部（192）を後部（132）とカバ
ー（14）の後部間に介設し、後部外側面に固着した中間
カバー（21）の前部（211）に軸受（22）を介して支持
し、軸（19）は基端（191）と中間部（192）間にギヤ
（193）を備え、これと平行に設けた中間軸（23）のギ
ヤ（231）とギヤ（193）を噛合せしめ、更に平行に並設
した後車軸（24）のギヤ（241）とギヤ（232）とを相噛
合せしめ、軸（19）の出力を後輪（６）に伝達する。The front partition wall (131) of the case part (13) is provided with a bearing (16) to extend the output part (102) of the crankshaft (101) into the space (S) in the transmission case (15). A drive pulley (17) is attached to the pulley. The pulley (17) is a continuously variable pulley having a variable effective belt diameter, and includes a fixed face (171) at the shaft end and a movable face (172) inward in the axial direction. The fin (181) is attached to the outer surface of the fixed face (171) at the shaft end.
Fan for outside air intake with multiple pulleys integrated with pulley (18)
Make up. A rear end (132) of the case portion (13) rotatably supports a base end (191) of a driven shaft (19) via a bearing (20), and an intermediate portion (192) of the shaft (19) at a rear part (192). 132) and the rear part of the cover (14), and is supported by the front part (211) of the intermediate cover (21) fixed to the outer surface of the rear part through the bearing (22), and the shaft (19) is the base end. A gear (193) is provided between the (191) and the intermediate portion (192), and the gear (231) and the gear (193) of the intermediate shaft (23) provided in parallel with the gear (193) are meshed with each other The gear (241) and the gear (232) of the axle (24) are meshed with each other, and the output of the shaft (19) is transmitted to the rear wheel (6).
被動軸（19）の中間乃至先部（194）をカバー（14）方
向に延出し、該部分の奥側に固定フェース（251）を手
前側に可動フェース（252）を設け被動プーリ（25）を
形成し、可動フェース（252）のボス部（253）端には発
進クラッチ（26）のインナ（261）を、又軸（19）の先
端部（195）にはドラム状アウタ（262）を設け、軸（1
9）の所定回転数でプーリ（25）と軸（19）を遠心係合
子（263）を介して係合する。The driven pulley (25) is provided by extending the middle part to the front part (194) of the driven shaft (19) toward the cover (14), and providing the fixed face (251) on the inner side of the part and the movable face (252) on the front side. The movable face (252) is provided with an inner (261) of the starting clutch (26) at the end of the boss (253) and a drum-shaped outer (262) at the tip (195) of the shaft (19). Provide the shaft (1
The pulley (25) and the shaft (19) are engaged via the centrifugal engagement element (263) at a predetermined rotation speed of 9).
以上の駆動プーリ（17）と被動プーリ（25）の間にベル
ト（27）を巻回する。The belt (27) is wound around the drive pulley (17) and the driven pulley (25) described above.
尚図面中（28）はケース部（13）とカバー（14）の中間
部間に架設したキックスタータスピンドルである。Reference numeral (28) in the drawing denotes a kick starter spindle installed between the case (13) and the intermediate portion of the cover (14).
以上において実施例では伝動ケース部（13）の開放端縁
（133）とカバー（14）の対向し当接接合する端縁（14
1）の間にガスケットで構成される区画板（29）を介装
して、区画板（29）は駆動プーリ（17）の可動フェース
（172）、キックスタータスピンドル（28）及びこれと
平行する中間軸（281）、被動プーリ（25）の固定フェ
ース（251）の部位に夫々開口部（291），（292），（2
93）及び（294）を備える。かかる区画板（29）で伝動
ケース（15）内の空間（Ｓ）をプーリ（17），（25）側
の空間（S1）と内側の空間（S2）に区画し、ベルト（2
7）及びプーリのベルトとの摺動部は画成された空間（S
1）内に臨むこととなる。As described above, in the embodiment, the open edge (133) of the transmission case (13) and the edge (14) of the cover (14) facing and abutting against each other are joined.
A partition plate (29) composed of a gasket is interposed between 1), and the partition plate (29) is parallel to the movable face (172) of the drive pulley (17), the kick starter spindle (28) and this. The intermediate shaft (281) and the fixed face (251) of the driven pulley (25) are provided with openings (291), (292), (2), respectively.
93) and (294). Space of the transmission within the case (15) in such a partition plate (29) (S) of the pulley (17), partitioned into (25) space side (S 1) and the inner space (S 2), a belt (2
7) and the sliding part of the pulley with the belt are the defined space (S
1 ) You will face inside.
伝動ケース（15）を構成するカバー（14）の前部（14
2）は固定プーリ（171）側面と対向する部位を外側方に
膨出せしめて外気導入空間（S3）を形成し、カバー（1
4）の前端（143）から前部（142）にかけて前方に開口
する外気吸入口（30）を設け、吸入口（30）は前端（14
3）から筒状部（301）が前方に突出し、前部（142）の
奥面に開口（302）し、開口（302）を備える空間（S3）
に既述のファン（18）が臨む。The front part (14) of the cover (14) that constitutes the transmission case (15)
2) bulges outward the part facing the side surface of the fixed pulley (171) to form an outside air introduction space (S 3 ) and covers the cover (1
The outside air intake port (30) that opens to the front from the front end (143) to the front part (142) of 4) is provided, and the intake port (30) is located at the front end (14).
A space (S 3 ) in which the tubular part (301) projects forward from the 3) and has an opening (302) in the inner surface of the front part (142) and the opening (302) is provided.
The above mentioned fan (18) faces.
カバー（14）の中間後部で被動プーリ（25）の前方上部
に相当する部位で、ベルト（27）の緊張側が該プーリ
（25）から離れる部位には空気排出通路（31）を形成す
る。空気排出通路（31）は第３図のカバー裏面図で示さ
れる如くカバー（14）裏面の当該部位の高さ方向中間部
迄起立する如くダクト（311）状に画成され、後壁（31
2）はプーリの外形に倣うべくその前方で彎曲し、上端
が排出案内部（313）として上向きに開口し、下端が排
出口部（314）として下向きに開口し、ダクト（311）と
して空間（S1）と外部とを連通せしめる。カバー（14）
裏面のかかる空気排出通路（31）の案内口部（313）上
方には該案内口部（313）方向の彎曲垂下したガイド壁
（144）を内側方に適宜量突出する如く設ける。An air discharge passageway (31) is formed at a portion corresponding to the front upper portion of the driven pulley (25) in the middle rear portion of the cover (14) and at a portion where the tension side of the belt (27) is separated from the pulley (25). As shown in the cover rear view of FIG. 3, the air discharge passageway (31) is defined in the shape of a duct (311) so as to stand up to the middle portion in the height direction of the relevant part on the back surface of the cover (14), and the rear wall (31).
2) is curved in front of the pulley so as to follow the outer shape of the pulley, the upper end is opened upward as the discharge guide part (313), the lower end is opened downward as the discharge port part (314), and the space is formed as the duct (311) ( S 1 ) and the outside are communicated. Cover (14)
A guide wall (144) which is bent downward in the direction of the guide port (313) is provided above the guide port (313) of the air discharge passageway (31) on the back surface so as to project appropriately inward.
実施例ではカバー（14）の後端部（144）にも補助排出
口（32）を設け、該排出口（32）は第３図で示される如
くで、後端部（144）の下壁乃至中間壁（145）はプーリ
（25）の外形に倣って彎曲し、上壁（146）は後方に突
出してこの間に排出案内口部（321）を設け、上壁（14
6）を彎曲状に垂下してダクト部（322）を形成し、下端
部を開口して排出口部（323）とする。In the embodiment, an auxiliary discharge port (32) is also provided at the rear end (144) of the cover (14), and the discharge port (32) is as shown in FIG. 3, and the lower wall of the rear end (144) is formed. The intermediate wall (145) is curved according to the outer shape of the pulley (25), the upper wall (146) projects rearward, and the discharge guide port (321) is provided between the upper wall (146) and the upper wall (14).
6) is bent in a curved shape to form a duct portion (322), and the lower end portion is opened to serve as a discharge port portion (323).
以上においてエンジンの運転でクランクシャフト（10
1）の出力部（102）に設けられた駆動プーリ（17）は第
２図中反時計方向に回動し、ベルト（27）を介して被動
プーリ（25）を同方向に回動させ、後輪（６）を駆動す
る。ベルト（27）は上側（27）が緊張側で図中左方に引
張され、プーリ（17）の駆動力をプーリ（25）に伝え、
下側（272）はプーリから送り出される弛緩側となる。
プーリ（17）に付設したファン（18）の回転で吸入口
（30）から外気を伝動ケース（15）の前部の空間（S3）
内導入し、導入された空気はファン（18）の回転が反時
計方向であるため後方に送られ、空間（S1）内を前から
後方に流れ、プーリ（17），（25）間に装架されたベル
トを冷却する。空気は後方に流れ、後部の被動プーリ
（25）にいたりこれの回転につられてこれの周りを反時
計方向に流れ、プーリ（25）の上方から前方に流れる。
かかるプーリ（25）周りの流れの一部は補助排出口（3
2）から外部に排出される。At the above, the crankshaft (10
The drive pulley (17) provided in the output part (102) of 1) rotates counterclockwise in FIG. 2, and the driven pulley (25) rotates in the same direction via the belt (27). Drive the rear wheels (6). The upper side (27) of the belt (27) is pulled to the left side in the figure on the tension side, and the driving force of the pulley (17) is transmitted to the pulley (25).
The lower side (272) is the loose side fed from the pulley.
Rotation of the fan (18) attached to the pulley (17) transfers outside air from the intake port (30) to the front space (S 3 ) of the case (15)
The air introduced inside is sent to the rear because the rotation of the fan (18) is counterclockwise, flows from the front to the rear in the space (S 1 ), and is between the pulleys (17) and (25). Cool the mounted belt. The air flows backward, flows in the counterclockwise direction around the driven pulley (25) at the rear part or as the driven pulley (25) rotates, and flows from above the pulley (25) to the front.
Part of the flow around the pulley (25) is the auxiliary outlet (3
2) is discharged to the outside.
プーリ（25）周りを流れる空気は空気流前方の壁（14
3）にガイドされて下向きとなり、この部分の手前でベ
ルト（27）の緊張側（271）はプーリ（25）から離れ、
一方、新気は既述に従って吸入口（30）から導入されて
後方に流れており、壁（143）の付近で方向が逆の状態
で衝突する。従ってこの部位で正圧が最も高くなり、か
かる部位に空気排出通路（31）が設けられ、具体的には
壁（143）の下に排出案内口（313）が臨み、ここからダ
クト（311）内に案内され、排出口部（314）から外部に
排出され、ダクト（311）の空気流の方向と略一致し、
これに方向性をもたせるべく彎曲しているため空気の排
出も円滑になされる。このように正圧の最も高い部分に
排出口が設けられているため伝動ケース内の空気の排出
は効率的になされ、ケース内に導入される冷却空気の換
気が迅速に、円滑に効率良くなされ、ベルトの冷却性を
向上さることができる。ところで前記補助排出口（32）
は排気側の開口面積を実質的に広げ、空気の排出の絶対
量を増やし、空気の導入を促進するものであり、ケース
形状等により前記排出口（31）の開口面積を十分確保し
難い場合には有効となる。又、空気の排出は前記排出口
（31）が支配的となるため、壁（143）付近で空気の正
圧が最も高くなる効果は殆ど損われない。The air that flows around the pulley (25) flows through the wall (14
It is guided downward by 3) and the tension side (271) of the belt (27) moves away from the pulley (25) before this part.
On the other hand, fresh air is introduced from the suction port (30) and flows backward as described above, and collides in the vicinity of the wall (143) in the opposite direction. Therefore, the positive pressure becomes the highest in this portion, and the air discharge passage (31) is provided in this portion, and specifically, the discharge guide port (313) faces below the wall (143), and from here, the duct (311). Guided inside, discharged from the discharge port (314) to the outside, and approximately in the same direction as the air flow in the duct (311),
The air is discharged smoothly because it is curved to give it direction. Since the exhaust port is provided at the portion with the highest positive pressure in this way, the air in the transmission case is efficiently discharged, and the cooling air introduced into the case is quickly, smoothly and efficiently. Therefore, the cooling property of the belt can be improved. By the way, the auxiliary outlet (32)
Is to substantially expand the opening area on the exhaust side, increase the absolute amount of air discharged, and promote the introduction of air. When it is difficult to secure the opening area of the discharge port (31) due to the shape of the case, etc. Will be valid for. Further, since the discharge port (31) is dominant in discharging the air, the effect that the positive pressure of the air becomes highest in the vicinity of the wall (143) is hardly impaired.
第５図乃至第７図は第２実施例を示す。5 to 7 show the second embodiment.
本実施例では既述のカバー（14）の前記部位にカバーを
横貫する如く孔（51）を設け、一方、該孔（51）に断面
角パイプ状の排出管（52）の上端円管部（53）を嵌合し
て焼付等により固着し、管（52）はカバー（14）後部の
円形膨出部（147）の前縁（148）の中間上部乃至下部に
当接する如く弧状に下方に垂下し、下端部（54）が排出
口部となる。管（52）はカバー（14）の表面に焼付等さ
れて固着される。In this embodiment, a hole (51) is provided in the above-mentioned portion of the cover (14) so as to traverse the cover, while the upper end circular pipe portion of the discharge pipe (52) having a square pipe cross section is provided in the hole (51). (53) is fitted and fixed by baking, etc., and the pipe (52) is arcuately downward so as to come in contact with the intermediate upper part or lower part of the front edge (148) of the circular bulging part (147) at the rear part of the cover (14). And the lower end (54) serves as the discharge port. The pipe (52) is baked and fixed to the surface of the cover (14).
（発明の効果） 以上で明らかな如く本発明によれば、伝動ケース内にフ
ァンから導入された冷却空気は駆動プーリ側から被動プ
ーリ側に流れ、この間でベルトを冷却し、被動プーリの
部分で空気流はこれの回転に伴れて回転流となり前方に
方向転換し、かかる空気流は前方から被動プーリ方向に
流れる空気と該プーリから緊張側のベルトが離れる部位
で衝突し、この部位での正圧が高くなり、この部位に排
出口があるためケース内の空気は効率良く排出すること
ができる。また、ファンで外気を直接ケース内に取り入
れるようにしたため、冷却効果を高めることができ、か
つ、排出口は伝動ケース下方にて外気と連通するため、
走行風による吸い出し効果により空気の排出も円滑に行
われる。従って、ケース内への新規の導入、冷却後の排
出が全体として効率良くなされることとなり、ケース内
のベルトの冷却性を向上させることができるとともに、
以上のケース内空気の排出口を前記の場所に設けるだけ
で足り、別途の強制排出構造を採用する必要がないこと
から簡素な構成で初期の目的を達成することができる。(Effects of the Invention) As is apparent from the above, according to the present invention, the cooling air introduced from the fan into the transmission case flows from the driving pulley side to the driven pulley side, and the belt is cooled in the meantime, so that the driven pulley portion is cooled. As the airflow rotates, it becomes a rotational flow and changes its direction forward. The airflow collides with the air flowing from the front toward the driven pulley at the part where the tension side belt separates from the pulley, and at this part, Since the positive pressure becomes high and the exhaust port is provided at this portion, the air in the case can be efficiently exhausted. Further, since the outside air is directly taken into the case by the fan, the cooling effect can be enhanced, and the discharge port communicates with the outside air below the transmission case,
Air is smoothly discharged due to the suction effect of the running wind. Therefore, new introduction into the case and discharge after cooling are efficiently performed as a whole, and the cooling property of the belt in the case can be improved, and
Since it suffices to provide the above-mentioned outlet for the air in the case at the above-mentioned location and it is not necessary to employ a separate forced exhaust structure, the initial purpose can be achieved with a simple configuration.
図面は本発明の一実施例を示すもので、第１図は自動二
輪車の側面図、第２図は同伝動装置の要部を破断した側
面図、第３図はカバーの裏面図、第４図は伝動装置の横
断平面図、第５図は第２実施例の要部の側面図、第６図
は第５図の6-6線断面図、第７図は同7-7線断面図であ
る。 尚図面中（102）は駆動軸、（17）は駆動プーリ、（1
8）は外気取入用ファン、（25）は被動プーリ、（27）
はベルト、（30）は空気取入口、（31）が排出口であ
る。The drawings show one embodiment of the present invention. FIG. 1 is a side view of a motorcycle, FIG. 2 is a side view in which a main part of the transmission is cut away, FIG. 3 is a rear view of a cover, and FIG. Fig. 5 is a cross-sectional plan view of the transmission, Fig. 5 is a side view of the essential parts of the second embodiment, Fig. 6 is a sectional view taken along line 6-6 of Fig. 5, and Fig. 7 is a sectional view taken along line 7-7. Is. In the drawing, (102) is a drive shaft, (17) is a drive pulley, and (1)
8) is an outside air intake fan, (25) is a driven pulley, (27)
Is a belt, (30) is an air intake port, and (31) is an exhaust port.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 林 徹 東京都板橋区蓮根２−29―17―21 (72)発明者 中道 勝弘 埼玉県朝霞市三原１−11―21 (72)発明者 中山 研吾 埼玉県入間郡三芳町大字藤久保546―５ 第２藤コーポ101 (56)参考文献 特開 昭59−54856（ＪＰ，Ａ) 実開 昭58−182056（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Hayashi 2-29-17-21 Hasune, Itabashi-ku, Tokyo (72) Inventor Katsuhiro Nakamichi 1-11-21 Mihara, Asaka City, Saitama Prefecture (72) Inventor Nakayama Kengo 546-5, Fujikubo, Miyoshi-cho, Iruma-gun, Saitama Prefecture 2nd Fuji-Corp 101 (56) References JP-A-59-54856 (JP, A) Actual development: 58-182056 (JP, U)
Claims (1)
駆動軸に連結され駆動プーリと、被駆動軸に連結された
被動プーリと、該プーリー間に巻回された無端ベルトを
収納したベルト式伝動装置において、前記駆動プーリの
一端面に外気取入用ファンを設け、このファンに対応し
た外気取入口を前記伝動ケース外側に開口させるととも
に、前記被動プーリの上方に位置する緊張側ベルトが被
動プーリから離れる部位から下方に向けて空気排出通路
を設け、この空気排出通路の下端を前記伝動ケース下方
で外気と連通させたことを特徴ととするベルト式伝動装
置。1. A transmission case provided in a traveling vehicle,
In a belt type transmission device, which accommodates a drive pulley connected to a drive shaft, a driven pulley connected to a driven shaft, and an endless belt wound between the pulleys, one end surface of the drive pulley for taking in outside air A fan is provided, and an outside air inlet corresponding to the fan is opened to the outside of the transmission case, and a tension side belt located above the driven pulley is provided with an air discharge passage downward from a portion separated from the driven pulley, A belt type transmission device characterized in that the lower end of the air discharge passage communicates with the outside air below the transmission case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60072375A JPH0710675B2 (en) | 1985-04-05 | 1985-04-05 | Belt type transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60072375A JPH0710675B2 (en) | 1985-04-05 | 1985-04-05 | Belt type transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61232979A JPS61232979A (en) | 1986-10-17 |
| JPH0710675B2 true JPH0710675B2 (en) | 1995-02-08 |
Family
ID=13487487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60072375A Expired - Fee Related JPH0710675B2 (en) | 1985-04-05 | 1985-04-05 | Belt type transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710675B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6613668B2 (en) * | 2015-07-13 | 2019-12-04 | スズキ株式会社 | Power transmission device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58182056U (en) * | 1982-05-31 | 1983-12-05 | 本田技研工業株式会社 | Cooling device for belt type power transmission mechanism |
-
1985
- 1985-04-05 JP JP60072375A patent/JPH0710675B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61232979A (en) | 1986-10-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |