Patent ID: 8061313

Claim:
A variable valve device arranged to switch a lift degree of a valve between a low speed state and a high speed state, the variable valve device comprising: a low speed rocker arm including a through hole arranged parallel or substantially parallel to a rocker shaft, swingably supported by the rocker shaft, and swingable according to a lower speed cam of a camshaft to push a stem end surface of the valve; a connecting pin slidably inserted into the through hole; an actuator arranged to reciprocate the connecting pin in the through hole; and a high speed rocker arm including an engagement portion engaged with the connecting pin projecting from the through hole, swingably supported by the rocker shaft, provided adjacent to the low speed rocker arm, and swingable according to a high speed cam of the camshaft; wherein a first center of a width in a direction of the cam shaft of a surface where the connecting pin and the engagement portion are in contact with each other matches a second center of a width in a direction of the camshaft of a surface where the high speed cam and a sliding surface of the high speed rocker arm are in contact with each other, or is located further away from a center of the valve than the second center of the width; and the connecting is in constant engagement with the through hole of the low speed rocker arm.