Patent ID: 7030521

Claim:
A motor in which circuit boards for controlling the motor are attached within a housing comprising: two or more circuit boards each having an inserting hole whereby the inner diameter of each board is approximately the same; a rotating part having at least one rotor magnet arranged in a circular manner; a stator having a coil which is connected to circuits of the circuit boards, the stator located confronting the rotor magnet in radial direction; a cylindrical sleeve for fixing an inner periphery of the stator to an outer periphery surface thereof including: board attached virtual planes of two or more layers at which the two or more circuit boards are positioned, which are separately arranged in parallel to each other and board attachment portions formed at an outer periphery of the sleeve, wherein the board attachment portions have board supporting areas for fixing the circuit boards, and each circuit board penetrated by the sleeve through the inserting hole and fixed to the board attachment portion; a bracket for fixing the sleeve; and a bearing part arranged between an outer periphery of the rotating part and an inner periphery of the sleeve for supporting the rotating part so as to rotate about a rotational axis.