| 摘要 |
The derailleur (10) comprises an articulated quadrilateral mechanism, with four parallel articulation axes (A, B, C, D); at a first articulation axis (A), between a fixed member (13) and a first connecting rod (14), the fixed member (13) comprises a first forked structure (62) that embraces the first connecting rod (15); the first forked structure (62) comprises two opposite flanges (63, 64) provided with respective holes (65, 66) aligned along the first articulation axis (A) and the first connecting rod (14) comprises a hole aligned with the first articulation axis (A); a pin (68) is inserted into the two holes (65, 66) of the first forked structure (62) and into the hole of the first connecting rod (14). The provision on the fixed member (13) of the forked structure (62) that embraces the first connecting rod (14) allows a better distribution of the stresses induced in the first connecting rod (14) and on the pin (68) by the traction of the command cable of the derailleur (10). |
