To provide a power unit capable of achieving downsizing of a protective wall for protecting a connection end of a speed detection sensor.SOLUTION: The power unit includes: a gear 87 fitted onto a driving shaft 34 of a rear wheel in a transmission case 32 and rotating together with the driving shaft 34; a speed detection sensor 91 opposing to a gear 87 at a detection front end 91a and having a connection end 91b connected with a harness 92 outside the transmission case 32 to detect a rotational speed of the driving shaft 34; and a protective wall 98 protruding from an external surface of the transmission case 32 at a position offset from the connection end 91b in the axial direction of the driving shaft 34.SELECTED DRAWING: Figure 3

    【課題】速度検出センサーの接続端を保護する保護壁の小型化を実現することができるパワーユニットを提供する。【解決手段】パワーユニットは、伝動ケース32内で後輪の駆動軸34に装着されて駆動軸34に一体に回転する歯車87と、検出先端91aで歯車87に向き合わせられ、伝動ケース32の外側でハーネス92に接続される接続端91bを有し、駆動軸34の回転速度を検出する速度検出センサー91と、駆動軸34の軸方向に接続端91bからずれた位置で伝動ケース32の外面から突出する保護壁98とを備える。【選択図】図3


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    Title :

    POWER UNIT


    Additional title:

    パワーユニット


    Contributors:

    Publication date :

    2019-10-10


    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 / F16H Getriebe , GEARING



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