Patent ID: 8573169
Filing Date: 2013-11-05
Classification: F01L

Abstract:
1. A variable valve device for an internal combustion engine comprising: a shaft member that is configured by turnably encasing an inner camshaft in an outer camshaft formed of a pipe member and can be driven by crank output of an internal combustion engine; a reference cam disposed in an outer periphery of the outer camshaft; a movable cam disposed to be turnable around an axis of the outer camshaft; connecting means that connects the movable cam and the inner camshaft together while allowing relative displacement of the outer camshaft and the inner camshaft, in which the relative displacement of the outer camshaft and the inner camshaft makes the movable cam variable in phase on the basis of the reference cam, wherein the connecting means includes: a pin-like member that is movably inserted so as to penetrate the movable cam, the outer camshaft and the inner camshaft along a diametrical direction of the shaft member, and transmits relative displacement between the inner and outer camshafts to the movable cam; and an escape-preventing portion that restricts the pin-like member from escaping, and the pin-like member is radially displaceable from a first position to a second position with respect to the inner and outer camshafts while escape thereof is restricted by the escape-preventing portion.