| 摘要 |
PURPOSE:To detect generation of heat in a winding part exactly and decrease number of parts by forming a groove on an end face of the molded frame of a motor, inserting a temperature protection device into the inner side of the groove, and fixing it with a bracket. CONSTITUTION:A groove 4 is formed on the end face of the bracket side of a molded frame 1 near a bushing 3. A temperature protection device 5 is inserted into the groove 4 and fixed by mounting a bracket 6 on the end face of the molded frame 1. A groove part 4a for lead wires of the temperature protection device is provided in the groove 4. Since the groove 4 is formed in the same direction as the direction in which the frame is drawn from a molding die for resin, the groove can be drawn easily from the molding die. Since the temperature protection device 5 is arranged nearer to windings in the inner part of the frame and is shut off from outside by the bracket, the malfunctions of the temperature protection device which are caused by the changes of the ambient temperature of a motor, an air stream, and the like are removed and the generation of heat in the winding part can be detected exactly. |
