Rotor Structure for a Motor

A rotor structure for a motor comprising:

• a shaft;
• a single magnet having two opposite end faces, wherein an axial hole extends along an axis through said two opposite end faces and has a maximum extent parallel to the axis equal to a maximum extent parallel to the axis between the two opposite end faces, wherein at least one of the two opposite end faces has at least one first engaging member being a groove extending parallel to the axis into the at least one of the two opposite end faces, wherein the single magnet and each of the two opposite end faces of the single magnet have a maximum radial extent perpendicular to the axis;
• and
• two fixing seats each having an abutting face, with each of the abutting faces having a maximum radial extent perpendicular to the axis the same as the maximum radial extent of the single magnet and of the two opposite end faces of the single magnet, with at least one of the abutting faces facing said at least one of the two opposite end faces and having at least one second engaging member facing and engaging with said at least one first engaging member, with a positioning hole disposed at the center of the abutting face, with the two fixing seats having circular cross sections perpendicular to the positioning hole and to the axis,
• wherein the shaft passes through the axial hole of the single magnet and the positioning holes of the two fixing seats, the two fixing seats are adjacent to and abut against the end faces of the single magnet by the abutting faces respectively to position the single magnet relatively to the shaft, both the positioning holes of the two fixing seats have a diameter smaller than that of said shaft to tightly fit said shaft,
• wherein the at least one first engaging member is located at the maximum radial extent at the outer edge of the at least one of the two opposite end faces, or located at the inner edge of the at least one of the two opposite end faces.