| 摘要 |
PURPOSE:To prevent damage and the like of a lead wire by providing a stator on the outer peripheral part on the base end side of a support shaft and by arranging a plurality of bearings, to which pre-load has been given, more to the tip side than a statormounting position. CONSTITUTION:A mounting hole 2 is formed in the central part of a base 1, and one end of a support shaft 3 is fitted into and fixed in said hole so as to be erected on said base 1. Also, a stator 4 is mounted on the outer peripheral part on the base end side of said support shaft 3, and a salient pole 5 is provided circumferentially of said stator and an armature winding 6 is wound round said pole. Further, first-second bearings 7-8 are respectively arranged more to the tip side than the mounting position of the stator 4 in the support shaft 3. A rotor 9 is of a cylindrical shape, a permanent magnet 10 is provided round the outer peripheral part of said rotor as a magnetic disc and the like are mounted on said part, and the support shaft 3 is sheathed with said rotor 9 which is thus opposed to the stator 4. In this case, pre-load is mutually given to the first-second bearings 7-8. In this manner, no obstruction exists in the part between the stator 4 and the base 1 so that a lead wire 15 can be drawn from said part. |
