| 摘要 |
PURPOSE:To facilitate axial movement by cutting female threads on the inner periphery of a through hole formed coaxially with a rotational shaft of a motor, and longitudianlly slowly movably engaging an operation rod cut with male threads on the outer periphery with the female threads of the hole. CONSTITUTION:A through hole 2 is formed coaxially with an axial center in a rotor 2 of a motor 1, and female threads 4 are cut on the inner periphery. Male threads 5 to be contacted with the female threads 4 are formed on the rod 3. The threads 4, 5 are engaged slowly by readily longitudinally moving the rod 3 upon rotation of the motor 1. Thus, an article to be controlled mounted at one end of the rod 3 can be moved with low friction by a simple mechanism. For example, a door of a water gate can be suitably opened and closed. |
