PURPOSE: To eliminate umbalance in the attractive force of stator core by turning the stator core sideways in such a way as to bend the side magnetic poles on both sides upwards at the central main magnetic pole.
CONSTITUTION: The stator core 1 is formed into a shape in which sideways-turned E-shaped side magnetic poles 1b on both sides are bent upwards at the central main magnetic pole 1a, the stator winding 2 is wound around the main magnetic pole 1a, and excitation is made consistently by the half-wave controller 4 from the AC power source 3. The plunger 5 has magnetic pole facing the main magnetic pole 1a through the main gap 6a and constitutes an electromagnetic portion put between the side magnetic poles 1b and 1a through the subgap 6b, or a fine gap. On the opposite side of the main magnetic pole of the plunger 5, the return spring 10 which is connected to the piston 7 through the shaft 8 and is to be compressed when the plunger 5 is attracted by the main magnetic pole 1a is attached to between the piston 7 and the cylinder 15.
KOBAYASHI KAZUO
UKAI SUSUMU
