| 摘要 |
PURPOSE:To reduce the size and cost of the title motor by vibrating a stator with a standing wave, and bringing it into contact with a rotor at a protrusion formed between the node and the antinode of the vibration mode of the wave. CONSTITUTION:A standing wave motor is annularly composed, and a stator 1 in which a vibrator 2 made of a piezoelectric element is added, is brought into contact with a rotor 3 and a protrusion 11 for forming a pinion 4 for outputting a rotary force. The stator 1 is divided into the eight vibration elements of a vibrator made of the element, and deflection-vibrated at 2lambda in vibration mode to form four nodes of the vibration. The protrusion 11 between the node and the antinode of the vibration mode is brought into contact with the rotor 3 to apply a force to the rotor 3. The positions of the node and the antinode of the vibration mode are altered by varying the combination of the elements, and its reverse drive can be facilitated. |
