Patent ID: 8366419
Filing Date: 2013-02-05
Classification: F04D,H02K

Abstract:
1. An inner rotor type motor comprising, in combination: a base including a pivotal portion; a stator mounted to the base and including a body and a coil unit, with the body including a hole, with the coil unit engaged with the body and surrounding the hole; and a rotor including a rotatable member, a shaft, a permanent magnet and a magnetically conducting ring, with the rotatable member including an engaging portion and a cylindrical sidewall provided along a periphery of the engaging portion, with the cylindrical sidewall extending into the hole of the stator, with the shaft including a first end coupled to the engaging portion of the rotatable member, with the shaft further including a second end coupled to the pivotal portion of the base, with the cylindrical sidewall having a first axial end connected to the engaging portion and a second axial end spaced from the first axial end parallel to the shaft, with the cylindrical sidewall having an outer periphery and an inner periphery extending between the first and second axial ends, wherein the inner periphery is opposite to the outer periphery of the cylindrical sidewall, with the permanent magnet mounted to the outer periphery of the cylindrical sidewall that extends between the first and second axial ends of the cylindrical sidewall of the rotatable member and aligned with the coil unit, and with the magnetically conducting ring intermediate the permanent magnet and the inner periphery of the cylindrical sidewall and aligned with the coil unit.