| 摘要 |
PURPOSE:To unitedly compose an electromagnet device and a motor portion by using a motor coil as a coil of an electromagnet device wherein a fixed iron core is used as the bearing of a rotor. CONSTITUTION:With an alternating current flowed to excite a coil 2, a fixed iron core 1 absorbs a moving iron piece 5 and a travelling contact 8 and a normal open contact 19 are contacted each other. At the same time, the arm part 4' of a yoke 4 and a stator magnetic pole tooth plate 20 are connected in parallel. It forms a closed magnetic circuit connecting the yoke 4 excluded the arm 4', the fixed iron core 1 and the moving iron piece 5. A magnetic force is supplied to a rotor 28 by passing the magnetic flux on the closed magnetic circuit. The shape and arrangement of the magnetic pole tooth of the plate 20 is made so that the stationary position of rotary direction of the rotor 28 at exciting condition may not the same as that at nonexciting condition. Magnetic pole tooth groups 25 and 27 are inverted by corresponding to N and S poles by positive and negative inversion of the exciting current, so the rotor 28 is intermittently rotated by repeating repulsion and absorption with the tooth groups 25, 27 as nonexciting condition exists during inversion. |
