BRUSHLESS VIBRATING MOTOR OF SMALL FLAT TYPE WITH ANNULAR COIL

摘要

PROBLEM TO BE SOLVED: To provide a brushless vibrating motor of small flat type with annular coil capable of producing an annular coil in a short time by conducting winding work in a simple way, and using a highly efficient and small annular coil taking advantage of the characteristics of the annular coil with a simple structure. SOLUTION: In this brushless vibrating motor, a rotor yoke is elongated so as to meet housing case periphery side, and an extension part is provided toward end cap side so as to meet housing cylinder side. A flat and roughly arc-shaped magnet is integrally fixed to one external end of the rotor yoke extension part to form an eccentric rotor. The magnet is positioned on the outer-periphery side of a coil ring.