| 摘要 |
PROBLEM TO BE SOLVED: To prevent efficiency deterioration due to increase of eddy current that break an electrical insulation at a welded part when pole-tooth sections of a stator divided into segments at every pole tooth and wound in order and connected by welding so as to form a ring shape. SOLUTION: A ring-shaped stator is formed of serrated sections of the stator that are wound in order and connected into a ring shape, wherein the tip of a caulking member 3 is inserted and connected to a fixing groove 2A formed at the external periphery of the stator. Since there is no welded part in the stator, an electrical insulation is not broken, deterioration of efficiency caused by the increased eddy current is prevented, and then a concentrated-wound stator capable of achieving a small-sized motor with a simple configuration, high efficiency and high performance can be provided.
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