Patent ID: 7942119
Filing Date: 2011-05-17
Classification: F01L

Abstract:
1. A variable valve mechanism that varies amounts of opening and closing of a valve, the variable valve mechanism comprising: a rotating cam; a rocker arm including: two lash adjusters that are disposed such that they are separated in the width direction of the rocker arm and that support the rocker arm so that the rocker arm can rock, each upper end portion of the lash adjusters having a hemispherical shape; a hydraulic passage including: a switching mechanism that uses a hydraulic pressure in the hydraulic passage to perform a switching between a linked state, in which the input member and the output member are linked such that the input member and the output member cannot be displaced in relation to one another, and a released state, in which the link between the input member and the output member is released such that the input member and the output member can be displaced in relation to one another, the switching varying the amounts of the opening and the closing of the valve; and a support shaft, an axis line of the support shaft passing through spherical centers of the hemispherical shape of the upper end portions of the lash adjusters, wherein the switching mechanism comprises: