JPS62149265U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a field portion of a conventional permanent magnet field motor, and FIG. 2 is a sectional view of an embodiment of the field portion of a permanent magnet field rotating machine of the present invention. 1... Field core with star-shaped cross section, 5... Rotor storage hole, 6-1 to 6-8... Strip-shaped magnet magnetized in the plate thickness direction, 7-1 to 7-4... Yoke .

Claims (1)

[Claims for Utility Model Registration] An uneven multi-layered structure having a rotor accommodation hole in the center, and a cross section of the outer periphery having a plurality of alternating convex and concave edges that are axially symmetrical when viewed from the axis of the rotor accommodation hole. A field core having a rectangular shape and integrally formed between the rotor housing hole and the outer circumferential portion with a residual thickness remaining even at the thinnest part; and the field core magnetized in the plate thickness direction. a plurality of strip-shaped magnets having dimensions to be attached to respective surfaces of the outer periphery of the field core; and adjacent strip-shaped magnets attached to the uneven polygonal surfaces of the outer periphery of the field core through the concave ridges thereof. It is equipped with a convex triangular yoke that contacts the outer surfaces of the pair to form an external magnetic path, and further includes a convex triangular yoke with magnetic lines of force in opposite directions on two adjacent surfaces sandwiching the concave ridge of the field core. The above-mentioned strip-shaped magnets are mounted on two adjacent surfaces sandwiching the ridge so that the lines of magnetic force are in the same direction, and the above-mentioned yoke is mounted on the outer surface of the pair of strip-shaped magnets mounted across the concave ridge. A permanent magnet field rotating machine characterized by: