Magnetizing method, and motor and method of manufacturing motor

A motor comprising:

• a stator;
• a rotor being rotatable relative to the stator and having a rotation axis;
• and
• a magnet and a magnetic-material member magnetically interacting with each other and being provided for enabling the stator and the rotor to magnetically attracting each other, the magnet having a shape of a ring and being coaxial with the rotation axis, the magnet having an inner circumference and an outer circumference, the inner circumference and the outer circumference having a common center;
• wherein the magnet has a plurality of N and S poles alternately arranged along a circumferential direction thereof, and at least one of boundaries between the N and S poles extends on a straight line out of the common center.

A motor comprising:

• a stator;
• a rotor being rotatable relative to the stator and having a rotation axis;
• and
• a magnet and a magnetic-material member magnetically interacting with each other and being provided for enabling the stator and the rotor to magnetically attracting each other, the magnet having a shape of a ring and being coaxial with the rotation axis, the magnet having an inner circumference and an outer circumference, the inner circumference and the outer circumference having a common center;
• wherein the magnet has at least four N and S poles alternately arranged along a circumferential direction thereof, and boundaries between the N and S poles extend on straight lines which meet at a single point separate from the common center.

A motor comprising:

• a stator;
• a rotor being rotatable relative to the stator and having a rotation axis;
• and
• a magnet and a magnetic-material member magnetically interacting with each other and being provided for enabling the stator and the rotor to magnetically attracting each other, the magnet having a shape of a ring and being coaxial with the rotation axis, the magnet having an inner circumference and an outer circumference, the inner circumference and the outer circumference having a common center;
• wherein the magnet has an N pole and an S pole successively arranged along a circumferential direction thereof, and boundaries between the N pole and the S pole extend on a common straight line distant from the common center.