Patent ID: 8667936

Claim:
A valve control apparatus for an internal combustion engine, comprising: a drive shaft configured to receive a rotational drive force; a control shaft including a control shaft main body configured to be rotationally controlled according to a state of the engine, wherein the control shaft main body is formed with a pair of insertion holes passing through the control shaft main body in a radial direction of the control shaft main body, and a control eccentric shaft located to have an Eccentricity relative to a rotation center of the control shaft main body, wherein both ends of the control eccentric shaft are formed with a pair of fixing holes extending in a radial direction of the control eccentric shaft, wherein the pair of insertion holes respectively face the pair of fixing holes; a rocker arm swingably supported by the control eccentric shaft and configured to convert a rotational motion of the drive shaft to a swinging motion; and a swing cam configured to open and close a valve of the engine by swinging according to a swinging force transmitted from the swinging motion of the rocker arm, wherein the control eccentric shaft is fixed to the control shaft main body by bolts, wherein the bolts pass respectively through the pair of insertion holes and are screwed respectively into the pair of fixing holes.