| 摘要 |
<p>A brushless D.C. motor assembly comprises a balancing sheet (2, 5) made of material with magnetic conductivity, the balancing sheet (2, 5) having an axle hole (13, 21, 51) joined together with a stator (3) by an axle tube (31), a rotor (4, 6, 7) rotatably received in the axle tube (31), the rotation thereof controlled by a controlling device, and the rotor (4, 6, 7) having a annular permanent magnet (44, 64, 74) with a diameter substantially the same as the diameter of the balancing sheet (2, 5) wherein the permanent magnet (44, 64, 74) and the balancing sheet (2, 5) attract each other. <IMAGE></p> |
