Patent ID: 8601989

Claim:
A variable valve gear of an internal combustion engine for opening and closing a valve by transmitting oscillation of a cam follower to an oscillating cam and changing lift characteristics of the valve by relatively moving a center of a cam follower roller with respect to a center of the oscillating cam, comprising: a drive camshaft including a drive cam; the oscillating cam including a base part and a lift part on an oscillating camshaft arranged in parallel with the drive camshaft to be oscillatable; the cam follower including a longitudinal one end oscillatably connected to a support shaft and a longitudinal other end having the cam follower roller contacting the drive cam, the cam follower being arranged between the drive camshaft and the oscillating camshaft to cross through a straight line connecting a center of the drive cam and a center of the oscillating cam, wherein a control shaft having a hollow body and a control arm part extending from the body toward an outer side in a radial direction is rotatably provided on an outer peripheral surface of the drive camshaft, the cam follower is oscillatably mounted to the control arm part via the support shaft, an oscillation arm part extending toward a position opposite to the drive cam across the cam follower roller is provided on the oscillating cam, and a central shaft of the cam follower roller and the oscillating arm part are connected to each other by a link arm of which both longitudinal ends are rotatably connected to the central shaft of the cam follower roller and the oscillating arm part.