| 摘要 |
PURPOSE:To attain to make allowances for the dimentional preciseness and the welding preciseness of an armature, by a method wherein the yoke mounted to a magnetic pole is formed into a ring shape and the opposed surface with the yoke of the armature is formed into an almost circular arc shape. CONSTITUTION:A notch is eliminated from a yoke 1 while the opposed surfaces of the yoke 1 and an armature are respectively formed into circular arc shapes. As mentioned above, because the yoke 1 is formed into the ring shape, the notch becomes unnecessary while the number of manufacturing processes are reduced and, therefore, dimensional preciseness is enhanced. Positional preciseness in the radius direction especially required in the connection of a leaf spring 3 and the armature 2 can be easily obtained by abutting both of them by a ring shaped jig or by inserting a sheet like spacer between said jig and the yoke 1. |
