| 摘要 |
PROBLEM TO BE SOLVED: To allow a rotor and a stator iron core, which face each other at a very small space, to be at the same potential, prevent the appearance of sparks in the small space, and prevent insulation breakdown between the stator iron core and a printed wiring board, by electrically connecting the stator iron core and a bracket. SOLUTION: A stator 5 is made by forming a printed wiring board and a stator iron core, around which a winding is wound, from thermosetting resin into an integral unit. The stator 5 is so formed that a non-contact section 3a may be exposed outside and is provided with a recess 5a in conformity with the shape of a bracket. A bearing bracket 11 has a projecting section 11a, a part of which is so bent as to allow the stator 5 to be brought into contact with the non-contact section 3a when it is mounted on the stator 5. By this method, the bearing bracket 11 and the stator 5 can be easily assembled and they are allowed to be at the same potential. As the stator 5 has such a shape that a part of the external side face of the stator iron core may be exposed, the stator iron core and the bearing bracket can be brought into contact with each other without forming a non-insulated section. |
