Patent ID: 8031440

Claim:
A support structure for a coil in a carriage assembly of a rotating disk data storage device comprising: a coil including a stack of layers of aligned windings of a conductive wire; a carriage housing having a pivot hole, an inner holding portion holding an inner end face of the coil, and an outer holding portion holding an outer end face of the coil, the carriage housing being injection-molded integrally with the coil; and a reinforcement portion formed at a position opposing the pivot hole across the coil of the outer holding portion for covering a portion of the exposed transverse end faces of the coil, wherein the reinforcement portion is disconnected from the inner holding portion, wherein the reinforcement portion is formed to cover a bottom side of an outermost peripheral layer of the coil, wherein the reinforcement portion is formed (a) to not cover the top side of a particular layer adjacent to the outermost peripheral layer of the coil and (b) to cover the top side of the outermost peripheral layer of the coil,— wherein the outermost peripheral layer of the coil comprises half or less windings than any other layer of the coil, and wherein the windings in the outermost peripheral layer are (a) all adjacent to one another and (b) collectively disposed closer to the bottom side of the coil than to either the top side of the coil or the midpoint between the bottom side of the coil and the top side of the coil.