JPS6254891U

JPS6254891U -

Info

Publication number: JPS6254891U
Application number: JP14747085U
Authority: JP
Priority date: 1985-09-27
Filing date: 1985-09-27
Publication date: 1987-04-04

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
は本考案装置を備えたパワーユニツトを搭載した
スクータ型自動二輪車の一部側面図、第２図はパ
ワーユニツトの側面図、第３図は第２図―線
に沿う展開断面図、第４図は第２図―線断面
図、第５図は第４図―線断面図である。Ｐ_１，Ｐ_２……第１、第２排出通路、Ｔ……巻
掛伝動装置、Ｗ……駆動車輪、１……エンジン、
２……伝動部、３……伝動室、４……伝動ケース
、５……可変径駆動プーリ、６……可変径従動プ
ーリ、７……伝動ベルト、８……クランク軸、１
４……冷却フアン、２０……入口、２１……出口
、２３……入口、２４……出口。 The drawings show one embodiment of the present invention, and FIG. 1 is a partial side view of a scooter type motorcycle equipped with a power unit equipped with the device of the present invention, FIG. 2 is a side view of the power unit, and FIG. The figures are a developed sectional view taken along the line of FIG. 2, FIG. 4 is a sectional view taken along the line of FIG. 2, and FIG. 5 is a sectional view taken along the line of FIG. _P1 , _P2 ...First and second discharge passages, T...Wrap transmission, W...Drive wheel, 1...Engine,
2... Transmission part, 3... Transmission chamber, 4... Transmission case, 5... Variable diameter drive pulley, 6... Variable diameter driven pulley, 7... Transmission belt, 8... Crankshaft, 1
4...Cooling fan, 20...Inlet, 21...Outlet, 23...Inlet, 24...Exit.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

エンジン１の一側に伝動部２を設け、この伝動
部２の伝動室３に、前記エンジン１のクランク軸
８に連なる可変径駆動プーリ、５、駆動車輪Ｗに
連なる可変径従動プーリ６、およびそれら両プー
リ５，６間に懸回される無端状伝動ベルト７とよ
りなる巻掛伝動装置Ｔを備え、前記可変径駆動お
よび従動プーリ５，６の少なくとも一方に冷却フ
アン１４を設け、この冷却フアン１４により伝動
室３内に、前記巻掛伝動装置Ｔを空冷却するため
の大気を吸込むようにした車両用パワーユニツト
における巻掛伝動装置の冷却装置において、前記
伝動部２の伝動ケース４には、第１排出通路Ｐ_１と第２排出通路Ｐ_２とを各別に設け、前記第１排
出通路Ｐ_１は、その入口２０を前記伝動ベルト７
の緩み側７_１の側縁に近接し、かつ該緩み側７_１の走行方向に対向して伝動室３内に開口し、また
その出口２１を伝動ベルト７の下方において大気
に開口し、また前記第２排出通路Ｐ_２は、その入
口２３を伝動ベルト７の張り側７_２の側縁に近接
し、かつ該張り側７_２の走行方向に対向して伝動
室３内に開口し、その出口２４を伝動ベルト７の
下方において大気に開口したことを特徴とする、
車両用パワーユニツトにおける巻掛伝動装置の冷
却装置。 A transmission section 2 is provided on one side of the engine 1, and a transmission chamber 3 of the transmission section 2 includes a variable diameter drive pulley 5 connected to the crankshaft 8 of the engine 1, a variable diameter driven pulley 6 connected to the drive wheel W, and A winding transmission device T consisting of an endless transmission belt 7 suspended between both pulleys 5 and 6 is provided, and a cooling fan 14 is provided on at least one of the variable diameter drive and driven pulleys 5 and 6. In a cooling device for a wrap transmission in a vehicle power unit, in which air is sucked into the transmission chamber 3 by a fan 14 to air-cool the wrap transmission T, the transmission case 4 of the transmission part 2 includes a cooling device. , first discharge passage P ₁ and a second discharge passage _P2 are provided separately, and the first discharge passage _P1 has its entrance 20 connected to the transmission belt 7.
The loose side 71 is close to the side edge of the loose side ₇₁ , and the loose side ₇₁ is close to the side edge of the loose side 71. The second discharge passage _P2 opens into the transmission chamber 3 opposite to the running direction of the transmission belt 7, and has its outlet 21 opened to the atmosphere below the transmission belt 7. It is characterized in that it opens into the transmission chamber 3 close to the side edge of the side 7 ₂ and opposite to the running direction of the tensioned side 7 ₂ , and its outlet 24 opens to the atmosphere below the transmission belt 7. ,
A cooling device for a wrap transmission in a vehicle power unit.