| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To make the whole structure including an electric motor for driving a control shaft to rotate and a storing box compact in the axial direction of the control shaft in a variable valve device of an engine in which one end of the control shaft for varying the operational characteristic of an engine valve according to the rotation around the axis is projected into the storing box fitted to the outer surface of the side wall of an engine body, the electric motor disposed outside the storing box is fitted to the outer surface of the storing box, and a power transmission means including a screw shaft whose axis is disposed in a plane orthogonal to the axis of the control shaft is stored in the storing box to transmit the power of the electric motor to the control shaft. <P>SOLUTION: The electric motor 110 having an output shaft 120 whose axis is parallel to the screw shaft 114 is fitted to the outer surface of the storing box 90, and the power transmission means 111 including a speed reduction gear mechanism 119 provided between the output shaft 120 and the screw shaft 114 is stored in the storing box 90. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
