| 摘要 |
<p>A miniature slow-speed synchronous a.c. motor has in a plastic housing (1, 2) a rotr shaft (5) with a plastic hub (20) and a drum (18). The stator (3) consists of the coil (6) on the reel (7), a split core sleeve (10, 11), inner (8, 9) and outer (13, 14) pole flange rings, separated by intermediate rings (17), and a one-piece core sleeve (15). A shading ring (12) joins the pole flange rings. The synchronisation of the rotor is achieved by the magnetic leakage flux. The rotor is fitted for this purpose with an additional pole tooth ring (19) which co-operates with a stationary pole tooth ring (21) on the housing (1).</p> |
