A drivetrain (10) of an electric bike (1) is provided. The drivetrain includes an outer rotor type motor (11), a shaft gear (13), a crankshaft (15) and a single-stage velocity-reduction driving assembly (17). The outer rotor type motor includes a stator assembly (111), a rotor assembly (112) and a housing (113). The rotor assembly is disposed to the housing. The shaft gear includes a joint portion (131) and a gear portion (132). The joint portion is disposed to the housing. The single-stage velocity-reduction driving assembly is configured around the crankshaft and includes a driving gear (171). A central axis (133) of the shaft gear and a central axis (151) of the crankshaft are substantially parallel to each other and non-coaxial, and the driving gear directly meshes with the gear portion. Accordingly, the drivetrain of the electric bike of the present invention has the advantages of easier assembly and having lower cost.
DRIVETRAIN FOR ELECTRIC BIKE
ANTRIEBSSTRANG FÜR EIN ELEKTRISCHES FAHRRAD
TRANSMISSION POUR BICYCLETTE ÉLECTRIQUE
2020-09-02
Patent
Elektronische Ressource
Englisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |