公开(公告)号：US20230242205A1

公开(公告)日：2023-08-03

申请号：US18096574

申请日：2023-01-13

Applicant: Astro Tech Co., Ltd.

Inventor： Samuel HU ,  LIU-CHENG LIU ,  CHIA-WEI HU

IPC: B62K11/02 ,  B62K19/08 ,  B21D53/86

CPC classification number: B62K11/02 ,  B62K19/08 ,  B21D53/86

Abstract: A manufacturing method of a bicycle unit has the following steps. In a pressing step: press metal sheets to form casing parts being overlappable. In an abutting step: abut the casing parts to form an abutting line. In a connecting step: connecting the two casing parts along the abutting line to form a motor mount prestructure having side plates and a motor-installation space formed therebetween. A prestructure of a bicycle frame is thereby made. In a motor mount forming step: cut the two side plates of the motor mount prestructure in compliance with a pre-determined motor system so as to form a bicycle frame unit with a motor mount.