JPS6419953A - Disk type single-phase brushless axial-flow fan motor - Google Patents

Abstract

PURPOSE:To eliminate the need for a magnetic substance substrate, and to manufacture a low-cost motor having excellent efficiency by wiring a terminal section for an electronic part to a printed board through small a hole for reducing eddy currents in a stator yoke. CONSTITUTION:An armature 26' is constituted in such a manner that a stator yoke 41 is arranged onto a strut 16a, a printed board 42 is fixed closely onto the stator yoke 41, and air core type armature coils 21, 22 are disposed onto the printed board 42. A plurality of small holes 46 for reducing eddy currents are formed to the stator yoke 41. Terminals for low-cost discrete electronic parts 20' organizing a driver circuit are passed through the small holes 46 from the lower section of the stator yoke 41, passed through small holes in the printed board 42 facing the small holes 46, and soldered to a wiring pattern on the top face of the printed board 42. The terminals for the electronic parts 20' are wired by utilizing the small holes in the stator yoke 41, thus fast sticking the stator yoke 41 and the printed board 42.