PROBLEM TO BE SOLVED: To provide a swing type power unit of a saddle-riding type vehicle, which can inhibit the rigidity of an oil pan from lowering even when an oil level checking window is formed in the oil pan.SOLUTION: A swing type power unit 3 of a saddle-riding type vehicle 1 comprises a crank case 5a rotatably supporting a crankshaft 51, and hanger arms 50L, 50R which are formed integrally with the crank case and swingably journal the crank case to a vehicle body frame 2, in which an oil level checking window 103 for allowing visual recognition of an oil quantity from the outside is provided in an oil pan 102 of the crank case. The hanger arms are formed extending forward from the oil pan. The oil level checking window is provided such that, in a vehicle side view, the same falls in a region between an upper imaginary line La which is an extension of an upper contour line 50a of the hanger arm 50L to the oil pan side, and a lower imaginary line Lb which is an extension of a lower contour line 50b to the oil pan side.SELECTED DRAWING: Figure 4

    【課題】オイルレベル確認窓がオイルパン部に形成されても、オイルパン部の剛性低下を抑制できる鞍乗型車両のスイング式パワーユニット。【解決手段】クランク軸51を回転自在に支承するクランクケース5aと、クランクケースと一体に形成されるとともに、前記クランクケースを車体フレーム2に対して揺動自在に軸支するハンガーアーム50L,50Rとを備え、クランクケースのオイルパン部102に、オイル量を外部から視認可能なオイルレベル確認窓103が設けられた鞍乗型車両1のスイング式パワーユニット3において、ハンガーアームがオイルパン部から前方に延出して形成され、車両側面視で、ハンガーアーム50Lの上側外郭線50aをオイルパン部側に延出した上側仮想線Laと、下側外郭線50bをオイルパン部側に延出した下側仮想線Lbとの間の領域に、オイルレベル確認窓が納まるようにして設けられた。【選択図】図4


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    Title :

    SWING TYPE POWER UNIT OF SADDLE-RIDING TYPE VEHICLE


    Additional title:

    鞍乗型車両のスイング式パワーユニット


    Contributors:

    Publication date :

    2016-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen



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