| 摘要 |
PURPOSE:To make small and simplify a construction, reduce the number of component parts and reduce troubles, by a method wherein an output shaft for a motor is privided with threads, and a rotor is engaged with the threads so that a rotating motion of the rotor is converted into a linear motion of the output shaft. CONSTITUTION:The rotor 1 is screwed to the output shaft 8, and in order to prevent the shaft 8 from rotating, rotation-preventing piece 10 is projectingly provided at the rear end of the shaft 8 and is engaged with a guide member 11. The guide member 11 is provided with a guide groove 11a in the direction along the shaft 8, and a tip part of the piece 10 is inserted into the groove 11a. Since the rotor 1 functions as a nut for the shaft 8, the shaft 8 is moved downward and upward as the rotor 1 is rotated forwardly and reversely, thereby the rotating motion of the rotor 1 is converted into the linear motion of the shaft 8. Accordingly, when a load is connected to the tip of the output shaft 8, the load can be reciprocated. |
