Patent ID: 6994063
Filing Date: 2006-02-07
Classification: F01L

Abstract:
1. A variable valve unit for an internal combustion engine to be driven by a camshaft rotatably provided in the internal combustion engine and to thereby vary a lift amount of at least one of an intake valve and an exhaust valve, the variable drive unit comprising: a first arm which drives any one of the intake valve or the exhaust valve; a second arm which is driven and oscillated by a cam formed to the camshaft, the second arm including a driving surface; and a third arm which drives the first arm upon receiving a displacement of the second arm, the third arm including an axis member, wherein a driven surface coming into surface contact with the driving surface is formed in the axis member; and the displacement of the second arm is transferred to the third arm with slippage occurring between the driving surface and the driven surface.