FRONT DERAILLER FOR BICYCLE

摘要

PROBLEM TO BE SOLVED: To accurately mount a front derailler for a bicycle mounted to a frame of the bicycle through a fixing base to a predetermined position. SOLUTION: The front derailler 45 mounted to the frame 11 pivotably around a curvature center of a first support surface 83a and movably in a z direction through the fixing base 81 including a support part 83 having the first support surface 83a in which a cross section viewed from the z direction is curved to a circular shape and a lengthy first through hole 83c in the z direction is provided with a derailler body 61 including a mounting part 66 having a mounting surface 66a in which a cross section viewed from a Y direction is curved to a circular shape; an intermediate base 71; and a fastening screw 73. The intermediate base 71 is arranged between the mounting surface 66a and the first support surface 83a and has a first abutment surface 71a and a second abutment surface 71b curved along a plane shape of the mounting surface 66a and the first support surface 83a. The mounting part 66 is mounted to the support part 83 using the fastening screw 73. COPYRIGHT: (C)2005,JPO&NCIPI