Spindle motor having disc mounting portion

Abstract

A spindle motor includes a rotor case in which a shaft support portion is installed at the center of the rotor and a plurality of disc mounting guides are formed by being lifted from the upper surface around the shaft support portion at a predetermined interval, a shaft installed at the shaft support portion, a disc chuck spring having at least one disc inner hold chucking portion and arranged at the rotor case such that at least one disc inner hole chucking portion slightly protrudes between the disc mounting guides, a magnet arranged inside the rotor case, an armature stator facing the magnet via a gap, and a stator base where the armature stator is arranged, the stator base supporting the shaft inside the armature stator.

Dependencies are inferred from the claim text.