Method of manufacturing a spindle motor

摘要

In a method of manufacturing a spindle motor, a sheet preferably made of a thermoplastic resin is closely adhered to an upper surface of a base portion of a spindle motor such that the sheet covers a base hole of the base portion. Next, heat is applied to a region of the sheet which coincides with the base hole to define a sheet hole continuous with the base hole. Thereafter, a coil is arranged over the base portion, and a conducting wire defining the coil is extended through the sheet hole and the base hole to be drawn downwardly out of the base portion. The sheet hole is thus defined after the sheet is closely adhered to the base portion. In addition, the sheet hole is defined by melting the resin through application of the heat. It is therefore easy to arrange the sheet and define the sheet hole.

主权项

1. A method of manufacturing a spindle motor, the method comprising the steps of:
a) preparing a metallic member including a base portion arranged to extend radially around a central axis extending in a vertical direction, and a base hole arranged to extend through the base portion in an axial direction; b) after step a), arranging a sheet made of a resin material on an upper surface of the base portion such that the sheet is fixed to the upper surface of the base portion and covers the base hole; c) after step b), applying heat to at least a region of the sheet which coincides with the base hole to define a sheet hole continuous with the base hole in the sheet; and d) after step c), arranging a coil over the base portion, and extending a conducting wire defining the coil through the sheet hole and the base hole to be drawn downwardly out of the base portion.