Patent ID: 6516766
Filing Date: 2003-02-11
Classification: F01L

Abstract:
A rocker arm comprising: a rocker arm main body; a cam receiver being drivable by cams mounted to a cam shaft of an engine; and a tilting fulcrum shaft,said rocker arm main body having a pair of opposing wall portions which are tiltable by a cam to actuate a valve, said opposing wall portions each containing at least a cam receiver mounting portion for mounting said cam receiver between said opposing wall portions and a tilting fulcrum shaft mounting portion on each of said opposing wall portions for mounting said tilting fulcrum shaft between said opposing wall portions, each of said tilting fulcrum shaft mounting portions having a cylindrical expanding portion projecting out of the wall surface of said opposing wall portions in an axial direction of said tilting fulcrum shaft, wherein said rocker arm main body is formed of a single flat plate such that side portions thereof are formed of side walls rising substantially vertically from both sides of a bottom wall relative to said bottom wall and said side walls serve as said opposing wall portions.