METHOD FOR MANUFACTURING BICYCLE COGSET

摘要

A bicycle cogset manufacturing method includes: connecting a first and a second sprocket in different sizes with connecting members as a sprockets assembly in advance, where first and second inner portions of the first and second sprockets respectively have first insertion and second insertion members, and each of the insertion members are respectively provided with a first and a second positioning hole; transferring the sprockets assembly into a mold, and performing pouring to form a sprocket base, where an assembly hole is disposed in the center of the sprocket base, a plurality of connecting arms are arranged on an outer portion of the sprocket base, and the connecting arms clad the first insertion members and the second insertion members to form a cogset. In this way, modularization can be implemented to achieve objectives of preventing troublesome riveting, accelerating manufacture, and reducing product weight.

主权项

1. A method for manufacturing a bicycle cogset, comprising the following steps:
Step (a1): preparing a first sprocket, wherein the first sprocket has a first outer portion and a first inner portion, the first outer portion is provided with a plurality of first teeth, the first inner portion is provided with a plurality of first insertion members, and each of the first insertion members is provided with a first positioning hole; Step (b1): preparing a second sprocket, wherein the second sprocket has a second outer portion and a second inner portion, the second outer portion is provided with a plurality of second teeth, the second inner portion is provided with a plurality of second insertion members, and each of the second insertion members is provided with a second positioning hole; Step (c1): preparing a plurality of connecting members, wherein each of the connecting members has a first pin and a second pin that are formed at different ends, the first pin is disposed in the first positioning hole of the first sprocket, and the second pin is disposed in the second positioning hole of the second sprocket, so as to connect the first sprocket and the second sprocket as a sprockets assembly; Step (d1): preparing a mold, and placing the sprockets assembly of Step (c1) into the mold; Step (e1): performing pouring material and molding, that is, pouring a material into the mold to form a sprocket base, wherein an assembly hole is formed in the center of the sprocket base, a plurality of connecting arms are formed on an outer portion of the sprocket base, and the connecting arms clad the first insertion members and the second insertion members; and Step (f1): opening the mold to take out a finished cogset.