MEMBER FOR PREVENTING MAGNET FLOTATION AND SHATTER, AND ROTOR

摘要

PROBLEM TO BE SOLVED: To provide a member for preventing magnet flotation and shatter, achieving weight reduction of a rotor, capable of preventing magnet flotation and shatter during high-speed rotation and to provide a rotor.SOLUTION: The cylindrical member for preventing magnet flotation and shatter that prevents flotation and shatter of a magnet 2 includes: a shaft 1; and the magnet 2 formed by coupling in cylindrical shape split bodies provided around the shaft 1, and is provided on an outside of the magnet 2 of a rotor that rotates at a speed of equal to or more than 5000 rpm. A member 3 of preventing magnet flotation and shatter is made of a carbon fiber reinforced resin formed by winding and laminating carbon fibers along an external circumferential direction of the magnet 2. A volume content of the carbon fiber is equal to or more than 75 vol%.