A drive unit (20) includes: a housing (21); a motor (25) accommodated in the housing; a crank shaft (22) extending through the housing along the right-left direction of the bicycle; and a pair of bearings (38L, 38R) rotatably supporting the crank shaft within the housing, each bearing including an inner ring (381) and an outer ring (382). The pair of bearings are a first bearing (38L) which is provided at one side of a thrust direction and a second bearing (38R) which is provided at another side along the thrust direction, the thrust direction being an axial direction of the crank shaft. The first bearing is disposed so as not to move along the thrust direction relative to the crank shaft. The drive unit has a movement restricting structure to restrict movement of the first bearing relative to the relative to the housing along the thrust direction.


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    Title :

    DRIVE UNIT AND ELECTRICALLY ASSISTED BICYCLE


    Additional title:

    ANTRIEBSEINHEIT UND ELEKTRISCH UNTERSTÜTZTES FAHRRAD
    UNITÉ D'ENTRAÎNEMENT ET BICYCLETTE À DIRECTION ASSISTÉE


    Contributors:

    Publication date :

    2021-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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