AUTOMATIC WATER-COCK APPARATUS

摘要

PURPOSE:To permit the opening and closing between the closed state and the opened state with a prescribed opening rate by installing a pair of cam followers attached onto the cam connected to the output shaft of a motor. CONSTITUTION:A shaft driving mechanism 6 is constituted of a cam 12 connected to the output shaft of a motor 11 and the upper and the lower cam followers 13 and 14 in pairs separately fixed onto a driving shaft 4. When the cam 12 contacts with the upper cam follower 13, a valve piece 3 shifts upward, and when the lower cam follower 14 contacts, with the cam 12, the valve piece 3 shifts downward. Therefore, the valve piece 3 can be shifted vertically between the position for opening a flow-passage pipe 1 and the closing position by properly setting the positions for the cam followers 13 and 14.