| 摘要 |
PURPOSE:To avoid erroneous assembly work by providing partially different widths to each other between protrusions for positioning intermediate yoke and notches for positioning a side yoke. CONSTITUTION:Among protrusions 16a, 16b and 16c for positioning a side yoke 3 of an intermediate yoke 1, the protrusion 16b and 16c locating in a symmetrical position to the central axis y-y as a center respectively have different width of T1 and T2 to each other. While notches 17b and 17c of the yoke 3 engaging with these notches 16b and 16c are also arranged so as to coincide with these widths. With these arrangement for the protrusions 16a, 16b and 16c, and the corresponding notches, an engagement of the yoke 1 with the yoke 3 can not be allowed when positional discrepancy of 180 deg. exists between them so that erroneous assembly work is avoided. |
