| 摘要 |
PURPOSE:To increase the efficiency of the motor of the vibration type fluid machinery by reducing the length in the direction of axis of a movable coil by setting each magnetic pole part of an outside iron core and an inside iron core so as not to be opposed to the movable coil when a piston is positioned at a top dead center and a bottom dead center. CONSTITUTION:The length in the direction of axis of a movable coil 4 is made less than the sum of the length in the direction of axis of the magnetic pole part 21 of an outside iron core 2 and the stroke of the movable coil 4. The machinery is constituted so that each part of the magnetic pole parts of the outside iron core 2 and an inside iron core 3 is not opposed to the movable coil 4 when a piston is positioned at a top dead center (a) and a bottom dead center (b). The electric resistance is reduced in proportion to the length by reducing the length in the direction of axis of the movable coil 4, and the electrical loss can be reduced, and the reduction of the amount of work which a motor performs outside is decreased, and therefore the efficiency of the motor can be increased. |
