| 摘要 |
<p>PURPOSE:To eliminate relaxation resonance, imperfect connection and imperfect release of a coil spring and permit more stable connection operation by forming the iron core surface of an electromagnet opposed to the inductive secondary conductor installed onto a rotor into a polarized form. CONSTITUTION:A coil 23 wound-up into cylindrical form is surrounded by two electromagnetic cores A24 and B25, and a plurality of magnetic poles 26 and 27 which are bent to the inside of the coil are formed integrally on the electromagnetic cores A and B respectively. These magnetic poles 26 and 27 are mutually arranged so as not to be lapped each other, and the rotor equipped with the inductive secondary conductor having a cylindrical cage form which is not shown in the figure is arranged in the inside diameter part, keeping a little gap. When the coil 23 is brought into conduction, the electromagnetic cores 24 and 25 are magnetized in the reverse polarity, and the magnetic poles 26 and 27 are constituted so that the contiguous magnetic poles are magnetized in the reverse polarity each other.</p> |
