PROBLEM TO BE SOLVED: To provide an internal combustion engine for a saddle-riding type vehicle which enables a clutch release driving mechanism to be compactly disposed on one side wall of a crank case provided with a driving chain sprocket and achieves downsizing and weight reduction of the internal combustion engine.SOLUTION: In an internal combustion engine for a saddle-riding type vehicle, a plate-like chain guide plate (65), which covers front, upper, and lower sides of a driving chain sprocket (45) and is curved into a parabola shape, is attached to one side wall (21L) of a crank case (21) with a release rod (60) inserted through a front part thereof. A sprocket cover (70) which covers the driving chain sprocket (45) from a side is attached to the one side wall (21L) of the crank case (21) while sandwiching the chain guide plate (65) between itself and the side wall (21L). A clutch release driving mechanism (80) is provided at the sprocket cover (70). A cylindrical collar member (66), through which the release rod (60) is inserted, is disposed between an oil seal (63) and the chain guide plate (65).SELECTED DRAWING: Figure 5

    【課題】駆動チェーンスプロケットが設けられるクランクケースの一方の側壁にクラッチレリーズ駆動機構がコンパクトに配置されて、内燃機関の小型化および軽量化が図れる鞍乗型車両用内燃機関を供する。【解決手段】駆動チェーンスプロケット(45)の前方と上下を覆う放物線状に湾曲した板状のチェーンガイドプレート(65)が、前部をレリーズロッド(60)に挿通されてクランクケース(21)の一方の側壁(21L)に取り付けられ、駆動チェーンスプロケット(45)を側方から覆うスプロケットカバー(70)が、チェーンガイドプレート(65)を挟んでクランクケース(21)の一方の側壁(21L)に取り付けられ、スプロケットカバー(70)にクラッチレリーズ駆動機構(80)が設けられ、レリーズロッド(60)に挿通される筒状のカラー部材(66)が、オイルシール(63)とチェーンガイドプレート(65)との間に介装される鞍乗型車両用内燃機関である。【選択図】図5


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    Title :

    INTERNAL COMBUSTION ENGINE FOR SADDLE-RIDING TYPE VEHICLE


    Additional title:

    鞍乗型車両用内燃機関


    Contributors:

    Publication date :

    2016-09-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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