ECCENTRIC SASH WEIGHT FOR VIBRATION MOTOR

PROBLEM TO BE SOLVED: To constitute the entire part of a sash weight so as to obtain necessary vibration energy with lightweightness and smaller electric power consumption and to provide the sash weight which is inexpensive in terms of material with easy fabricating and molding. SOLUTION: This sash weight is divided to a cylindrical shaft holding part 1 which has a bearing hole 1a to be inserted and held with a motor shaft 5 in its central part and an approximately half tubular sash weight body part 2 of an approximately sectorial shape of a thickness covering a part of the outer flank of a bearing part 1. The shaft holding part 1 is formed of a metallic material of a low specific gravity which is a highly tough metallic material and the sash weight body part 2 is formed of a metallic material of a high specific gravity. This sash weight body part 2 is joined and fixed integrally to a part of the outer flank of the shaft holding part 1.