CASING FOR HEAT-DISSIPATING FAN FORMED INTEGRALLY BY PUNCHING MAGNETIC CONDUCTIVE PLATE

摘要

PURPOSE: A casing for a heat-dissipating fan is provided to reduce the number of components of a casing and a stator and to reduce the cost for manufacture by miniaturizing the structure of a heat-dissipating fan by punching a magnetic conductive plate. CONSTITUTION: A casing for a heat-dissipating fan includes a bottom substrate(10a) and plural sidewalls(101) extending from the bottom substrate. The bottom substrate and the sidewalls are integrally formed by punching a magnetic conductive plate(1). The bottom substrate includes a base(12) on which a stator having a coil assembly(20) is mounted. An axial hole(141) is formed on the base of the bottom substrate. A bearing is mounted in the axial hole to rotatably retain a shaft(31) of a rotor(30). A magnetization face(13) is formed on the base by punching the base. The magnetization face is installed adjacent to the coil assembly while surrounding the axial hole.