Disclosed herein is a body frame (100) for a bicycle which is able to provide higher strength in such a way to use a carbon material even when the outer diameters of a top tube (110), a bottom tube (120), a seat tube (130), a chain tube (150), etc. have the thickness of a body frame (11) (in case where the body frame (11) is made of a metallic circular tube) of a classical bicycle (10), while relatively reducing the weight of the body frame (100). For this, the body frame (100) for a bicycle according to the present invention is configured in such a way that each of the top tube (110), the bottom tube (120) and the seat tube (130) is made in a circular shape wherein the outer diameters are same from one end to the other end of each tube, and the flesh thickness of each tube is relatively thicker at the other end portion than one end portion, and each tube is made of a carbon material.
BODY FRAME FOR BICYCLE
KÖRPERRAHMEN FÜR EIN FAHRRAD
CADRE DE BICYCLETTE
2015-12-02
Patent
Elektronische Ressource
Englisch
IPC: | B62K Fahrräder , CYCLES |