| 摘要 |
PURPOSE:To enlarge the space between risers so that separate rotary elements may be arranged in the space and to shorten the dimension in the axial direction, by a method wherein the risers are arrange side by side at unequal intervals in relation to the quantity of slits. CONSTITUTION:When the quantity of slits 4 between commutator segments 1 is shown by (n) and optional different integral numbers (m) and (M') are selected, then each riser is arranged so that an open angle from the viewpoint of the commutator segment center for the risers 2, 2' set side by side may be (360 deg.Xm')/(nXm), and so that an open angle for two risers 2', 2' set side by side on the basis of an optional riser 2 may be 720 deg./n. For example, if m=2, m'=1 when n=6, the open angles for the risers 2 and 2', 2' are respectively 30 deg. and 90 deg.. In this manner, protective elements 6 or the like can be set between the risers 2', 2', and the dimension in the axial direction of a motor can be shortened. |
