| 摘要 |
PROBLEM TO BE SOLVED: To provide a pedal arm in which swollen parts provided in pairs in an arm body are certainly made to contact or confront with each other.SOLUTION: In a pedal arm, a stepping pad is attached at the bottom edge of an arm body 11, which is a metal hollow member. The arm body 11 includes a pair of swollen parts 13 and 14 projecting from right and left side faces 112 and 111 in an opposed relationship, respectively. The swollen part 13 is a square section having a flat surface 131 in parallel with the side face 111. The swollen part 14 is a cross-sectional half circular arc projecting in the normal direction of the flat surface 131. The swollen part 14 of the cross-sectional half circular arc is made to line contact with the flat surface 131 of the swollen part 13 of the square section. |
