A manufacturing method of a bicycle unit has the following steps. In a pressing step (S1): press metal sheets to form casing parts (100) being overlappable. In an abutting step (S21): abut the casing parts (100) to form an abutting line (103'). In a connecting step (S3): connecting the two casing parts (100) along the abutting line (103') to form a motor mount prestructure (10) having side plates (12) and a motor-installation space (16) formed therebetween. A prestructure of a bicycle frame is thereby made. In a motor mount forming step (S41): cut the two side plates (12) of the motor mount prestructure (10) in compliance with a pre-determined motor system (30', 30", 30‴) so as to form a bicycle frame unit with a motor mount (10', 10", 10‴).


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    Title :

    MANUFACTURING METHOD, PRODUCT OF BICYCLE FRAME UNIT AND PRESTRUCTURE OF BICYCLE FRAME ADAPTABLE FOR DIFFERENT MOTOR SYSTEMS


    Additional title:

    HERSTELLUNGSVERFAHREN, PRODUKT EINER FAHRRADRAHMENEINHEIT UND VORSTRUKTUR EINES FAHRRADRAHMENS, DER FÜR VERSCHIEDENE MOTORSYSTEME ANPASSBAR IST
    PROCÉDÉ DE FABRICATION, PRODUIT D'UNITÉ DE CADRE DE BICYCLETTE ET PRÉFORME DE CADRE DE BICYCLETTE ADAPTABLE À DIFFÉRENTS SYSTÈMES DE MOTEUR


    Contributors:
    HU SAMUEL (author) / LIU LIU-CHENG (author) / HU CHIA-WEI (author)

    Publication date :

    2023-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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