| 摘要 |
PURPOSE:To decrease the number of parts and also to simplify a driving structure by holding a cylindrical magnet working radially rotatably directly with a stator base bearing a coil. CONSTITUTION:A thrust bearing 23 is provided on the bottom of a stator base 21 having a cylinder 22 with the inside wall ground well enough to work as a bearing, and a cylindrical magnet 24 is retained rotatably with the cylinder 22. Then, the magnet 24 is energized radially so that different poles are given alternately circumferentially and also ground well enough to work as a rotary shaft on its outer peripheral wall. The stator base 21 is then formed with a thermosetting resin used for molding of a coil 26 at a position opposite to a pole face of the magnet 24, thereby supplying a given current to the coil 26 to rotate the magnet 24. |
