Abstract: A rotor includes a rotor body rotatable about a rotation axis and magnetic pole portions arranged in the rotor body. Each magnetic pole portion includes first and second magnets, the second being inside the first in a radial direction centered on the rotation axis. The rotor body includes first and second mount holes in each of which the first and second magnets is to be respectively located. The rotor body has division walls each of which divides the second mount hole. The first mount hole is one undivided hole. When the intersection of the outer peripheral surface of the rotor body with the d-axis of each magnetic pole portion is taken as a reference point, the dimension of a portion of the first magnet positioned between the reference point and the division wall in a magnetization direction is greater than the dimension of other portions of the first magnet.

Abstract: Each permanent magnet of a rotor includes: a first and a second linear portion arranged in a circumferential direction and extending from an outer periphery side of a rotor core toward a rotation axis; a third linear portion located between the first and the second linear portion in the circumferential direction and extending obliquely with respect to a radial direction and separately from the rotation axis from an end of the first linear portion closer to the rotation axis; and a fourth linear portion located between the second and the third linear portion in the circumferential direction and extending obliquely with respect to the radial direction and separately from the rotation axis from an end of the second linear portion closer to the rotation axis. Thicknesses of the third linear portion and the fourth linear portion are smaller than thicknesses of the first linear portion and the second linear portion.

Abstract: To reduce a leakage flux of a permanent magnet and suppress a decrease in magnet torque. A rotor includes a rotor body rotatable about a rotation axis and permanent magnets arranged in a circumferential direction centered on the rotation axis in the rotor body and having different magnetic poles alternately in the circumferential direction. The sectional shape of the permanent magnet perpendicular to the rotation axis is a shape extending along a predetermined reference line. The permanent magnet is magnetized in a direction crossing the reference line in a section perpendicular to the rotation axis. At least one end portion of the permanent magnet in the direction of the reference line is exposed through the outer peripheral surface of the rotor body.

Abstract: An inner rotor includes a rotor body, a polar anisotropic magnet, and magnetic bodies. The rotor body rotates about a rotation axis. The polar anisotropic magnet is located at an outer peripheral surface of the rotor body and has magnetic poles arranged in a circumferential direction centered on the rotation axis. The magnetic bodies are arranged on an outer peripheral surface of the polar anisotropic magnet at positions corresponding to the magnetic poles.