| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically switch a flow passage of a stop cock, and detect a position of a rotation angle.SOLUTION: The stop cock driving device comprises: a cylindrical cam 101 on the outer periphery of which a loop-like groove 102 is formed and that can rotate in normal and reverse directions; two driving pins 103, 104 that are respectively arranged in the groove 102 and can linearly move forward and backward; a three-way stop cock 403a connected to the cylindrical cam 101 and switching a flow passage; and a control part 110 for switching the flow passage of the three-way stop cock 403a by linearly moving the two driving pins 103, 104 forward and backward in a direction along an extension direction of the cylindrical cam 101 and rotating the cylindrical cam 101 to a center C of rotation in a normal or reverse direction.</p> |
