Patent ID: 9598983
Date: 2017-03-21
CPC Classifications: F01L

Claim:
1. A variable valve device for an internal combustion engine, the variable valve device comprising: a control shaft configured such that i) a maximum lift amount of an engine valve is determined according to a position of the control shaft in an axial direction and ii) an axial force acts on the control shaft due to a reaction force from a valve spring, the axial force being a force acting in the axial direction of the control shaft; an action member attached to the control shaft; a cam abutting with the action member, the cam being configured to displace the control shaft in the axial direction of the control shaft; and an actuator configured to pivot the cam by decelerating a rotation of a motor via a deceleration mechanism constituted by a plurality of gears in combination, the cam being provided with a change region and a retainer region,