Patent ID: 8496447

Claim:
A motor comprising: a shaft including a central axis in a center thereof and arranged to extend in a vertical direction; a hub arranged to be supported by the shaft and provided substantially in a shape of a covered cylinder; a magnet attached to an inside of the hub; a stator arranged radially opposite the magnet; a bearing mechanism including the shaft and a sleeve arranged to rotatably support the shaft; a bearing housing arranged to accommodate the bearing mechanism, the bearing housing including a bottom portion and being substantially cylindrical, the bottom portion of the bearing housing including a first large diameter portion, a small diameter portion, and a second large diameter portion; a base arranged near the bottom portion of the bearing housing, and including a base hole defined therein; and a circuit board arranged on an upper surface of the base; wherein the bearing housing is made of a resin material; the first large diameter portion is arranged on the upper surface of the base; an outer circumferential surface of the small diameter portion is arranged radially opposite a side peripheral surface of the base hole; the second large diameter portion is arranged to be in direct contact with a lower surface of the base through caulking; both of the first and second large diameter portions are in direct surface-to-surface contact with the base; and the circuit board is arranged radially outward from both of the first and second large diameter portions such that no portion of the circuit board is axially overlapped by either of the first and second large diameter portions.