| 摘要 |
PURPOSE:To prevent an armature winding from being broken, by placing the thermosetting resin hardened substance of the glass transition point of -10 degrees or less as an armature component, at the commutator side winding end section of the armature winding. CONSTITUTION:The unsaturated polyester resin of the glass transition point of -10 degrees or less is placed at a commutator side winding end section at least, as an essential armature component. Said thermosetting resin is unsaturated polyester resin, epoxy resin, silicon resin, polyurethane resin, or the like which is plasticized internally or externally by an emergency method, and among them, resin with the main component of the unsaturated polyester resin is desirable in view of working property and other characteristic. As a result, a winding can be prevented from being broken at the commutator side winding end section.
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