MAGNETIC FLUX RING FOR PERMANENT MAGNET MOTOR

摘要

PROBLEM TO BE SOLVED: To provide an electric tool including a motor having a magnetic flux ring. SOLUTION: This magnetic flux ring includes a ring member having first and second ends. The ends are disposed to be approached to/separated from each other when the ring is contracted/expanded. At least one anchor is integrated with the ring. A pair of magnets are coupled with the integrated anchor so that the magnets are coupled with the ring. The magnets are coupled with the ring so that the ring is contracted/expanded by using the magnet fixed in the ring.