| 摘要 |
<p>A valve drive device for simultaneously driving a number of valve elements, comprising a separate electric multi-way valve having driven gears and valve elements, wherein the driven gears (20A, 20B) meshed with each other through a pinion (17) as a common gear formed integrally with the rotor of a motor for controlling a three-way valve (12) are disposed approximately symmetric with respect to the axis of the common gear, separate rubber valve elements (24A, 24B) are installed on the lower surfaces of the driven gears and conformably brought into slidable contact with a valve seat smoothly and recessedly provided in a valve seat plate (13), and the driven gears are pressed against the valve seat (23) by a sheet of plate spring member (35) to open and close communication holes (valve ports) (25A, 25B) so as to connect and disconnect a flow passage from an inflow port (27).</p> |
