| 摘要 |
PROBLEM TO BE SOLVED: To inhibit interference in oscillation to an anti-lift side when a connection point O7 with a link member is positioned in the opposite side of a lift section of a cam profile of an oscillation cam with an oscillation center point O1 held in between. SOLUTION: A rotation center of a drive shaft and an oscillation center of the oscillation cam are defined as the point O1, a center of a drive eccentric cam is defined as a point O2, an oscillation center of a rocker arm is defined as a point O4, a connection point of the rocker arm and the link arm is defined as a point O5, a connection point of the link member and the rocker arm is defined as a point O6, and the connection point of the link member and the oscillation cam is defined as the point O7. In the above definition, when a structure has the point O5 and the point O6 positioned on the same point, the center O3 of the control shaft 3 is arranged on the same side as the point O1 with respect to a line L1 passing through the point O4 at the maximum operation angle and the point O4 at the minimum operation angle. Change of oscillation angle to the anti-lift side, accompanying the change of the operation angle, is reduced thereby. COPYRIGHT: (C)2010,JPO&INPIT
|
