Patent ID: 8944019
Filing Date: 2015-02-03
Classification: F01L

Abstract:
1. A variable valve mechanism of an internal combustion engine, comprising: a rotary cam that rotates according to rotation of the internal combustion engine; an output arm that is swingably provided, and that drives a valve when swinging; an input member that is provided so as to be swingable relative to the output arm, and that contacts the rotary cam; and a switching device that switches between a coupled state where the input member is coupled to the output arm so as not to allow the input member to swing relative to the output arm, and a non-coupled state where the coupling between the input member and the output arm is released so as to allow the input member to swing relative to the output arm, wherein the variable valve mechanism changes a drive state of the valve by the switching operation, the input member comprises an annular input roller that contacts the rotary cam, and a swing pin that is inserted into the input roller so as to rotatably support the input roller and that swings relative to the output arm when in the non-coupled state, and a center of the relative swinging movement is located at a position different from a rotation center of the input roller which is located inward of the input roller.