MOTOR FRAME

摘要

PURPOSE:To improve the cooling effect by providing fin-shaped projections on a motor frame, and forming further smaller projections shape on the fin-shaped projection. CONSTITUTION:Fin-shaped projections 2 are formed on the outer periphery of an aluminum motor frame 1, and further smaller projections 3 are formed on the projections 2. The projections 3 may be formed on the portion except the projections 2.