VARIABLE VENTILVORRICHTUNG FÜR MOTOR

A variable valve device is constructed to prevent inclination of a sliding surface of a high speed rocker arm. In an engagement surface (130) where a connecting pin (90) and the engagement portion (104) of a high speed rocker arm (84) are in contact, the center (130C) of the width of the surface in the direction of the cam shaft (40) is provided closer to the high speed rocker arm (84) than the center (134) of the width in the direction of the camshaft (40) of a cam contact surface (134) where the high speed cam (41) and the sliding surface (843) of the high speed rocker arm (84) are in contact. The low speed rocker arm (80) includes a cam receiver (801) and a connecting portion (802). The width of the connecting portion (802) is larger than that of the cam receiver (801). The side surface (805) of the connecting portion (802) projects beyond the side surface (804) of the cam receiver (842). The high speed rocker arm (84) includes a cam receiver (841) and a connecting portion (842). The side surface (806) of the connecting portion (842) and the side surface (845) of the connecting portion (842) are provided in the cam contact surface (134) and within the width of the surface in the direction of the camshaft (40).