| 摘要 |
PURPOSE:To obtain an electric connection between a commutator and an armature winding in a high reliability by simultaneously melting a soldering wire of a conductive melting wire by utilizing the heat generation of a fusing method, and covering fixedly the bonding portion with it. CONSTITUTION:After lead wirings 4 are engaged with a commutator coupling pawl 3, a suitable solder 5 is inserted to a gap formed between the pawl 3 and the surface of a commutator 2. Then, a suitable current is flowed to electrode rods 1 for the prescribed period, an insulating film covered on the surface of the wirings 4 is broken by the generated heat, the solder 5 inserted previously is simultaneously melted, and the periphery of the welded portion is covered by the melted material. At this time, the melted solder and not melted solder wirings 5 can be instantaneously separated at the melting time due to the generated heat. Accordingly, a series of the abovementioned operation is continuously repeated to bond the wirings 4 to the pawl 3 disposed on the periphery of the commutator 2. |
