| 摘要 |
PURPOSE: A mechanical valve having a self hold function is provided to maintain the converted state of an air pipeline by using a self hold function. CONSTITUTION: A mechanical valve having a self hold function comprises a body (10) for forming an air pipeline, a spool for controlling the air pipeline, a rod (12) for operating the spool, a movable gear, a rotary gear, a guide gear, and a self hold device. The movable gear adheres to the rod and moves frontwards and backwards. The rotary gear rotates when the movable gear moves, and the position thereof is changed. The guide gear guides the movement of the rotary gear and restricts the position of the rotary gear. The self hold function is composed of a rod spring for recovering the rod. |
