Coreless motor
AssigneeOlympus Optical Co., Ltd.
InventorMasaaki Sato
Life of this patent
Estimating the term…
Abstract
A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and disposed opposite to the rotor, in which the stator is arranged opposite to an effective coil section of the pancake coil and thus the rotor, and an annular spacing is formed opposite to an outer peripheral portion other than the effective coil section of the rotor so that a balance adjusting member for the rotor as well as an electrical part associated with the coreless motor can be provided in the annular spacing within the motor housing.
Claims12
A coreless motor comprisng a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coil units attached on a rotor substrate, said plurality of coil units constituting a pancake coil, and a permanent magnet stator mounted within the housing and disposed opposite to the rotor, in which said stator is arranged opposite to an effective coil section of said pancake coil and thus said rotor and an annular spacing are formed opposite to an outer peripheral portion other than said effective coil section of said rotor so that a balance adjusting member for said rotor and an electrical part associated with said coreless motor can be provided within said annular spacing.
Dependencies are inferred from the claim text.