A drive unit reliably and stably attached to a bracket, even if the bracket has high stiffness, includes a housing including first and second suspension bosses located between first and second side plates of the bracket in a left-right direction of a bicycle. A first bolt is fastened to the first suspension boss and inserted from an outside in the left-right direction of the bicycle into a hole in the first side plate. A cylindrical member is fitted into an insertion hole in the second suspension boss that is open toward the second side plate. The cylindrical member is slidable in the left-right direction of the bicycle and includes a thread groove located on an inner periphery thereof engaging a thread located on an outer periphery of a second bolt that is inserted from the outside in the left-right direction of the bicycle into a hole in the second side plate.
ELECTRIC-MOTOR-ASSISTED BICYCLE
2017-11-02
Patent
Electronic Resource
English
IPC: | F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / B62K Fahrräder , CYCLES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |