Patent ID: 6515389
Filing Date: 2003-02-04
Classification: H02K

Abstract:
In a permanent magnet-excited small motor (1) having an armature (12) supported rotatably about a pivot axis (18), at least two permanent magnet poles (30, 31) surrounding the armature (12) on opposed portions, and a pole housing (2), connecting the permanent magnet poles (30, 31), each of said permanent magent poles (30, 31) is enclosed by a curved region (4, 5) of said pole housing (2) and in regions between two adjacent curved regions (4, 5) said pole housing (2) has faces (19, 20) which are curved convexly outward with less curvature than said curved regions (4, 5), and wherein the faces (19, 20) are closer to the pivot axis (18) of the armature than the curved regions (4, 5).