| 摘要 |
A ratchet base structure for a bicycle includes a ratchet base and a plurality of enforcing ribs, The ratchet base has a plurality of positioning protrusions and locating protrusions. A plurality of cavities is adjacent to the locating protrusions. Each locating protrusions has an attaching face. Each enforcing rib has an abutting part connected to a fastening part via a connecting part. The fastening part is passed through the cavity to connect to the ratchet base so that the enforcing ribs are assembled on the ratchet base. Under this arrangement, when the flying wheel is rotated, the enforcing ribs suffer a torsion force from the flying wheel so as to avoid the locating protrusions from damaging. |
