| 摘要 |
PROBLEM TO BE SOLVED: To prevent excessive shaft reaction from being applied from a rocker shaft both to an input arm and an output arm.SOLUTION: In a rocker arm comprising an input arm 30 including an input roller 34 in abutment with a driving cam 10, an output arm 40 including an output plane 47 in abutment with a valve 7, and coupling pins 51 and 52 having both arms 30 and 40 coupled, the coupling pins 51 and 52 are disposed such that a coupling line C connecting between the center of the coupling pins 51 and 52 and the center of a rocker shaft 20 is located in a lateral view within a range R of ±25 degrees from a bisector M which bisects an input/output angle &thetas; between an input line A connecting between the rotation center of the input roller 34 and the center of the rocker shaft 20 in a lateral view and an output line B connecting between the center of the output plane 47 and the center of the rocker shaft 20 in a lateral view. |
