Bobbin casing assembly and sewing machine having same

摘要

A bobbin casing assembly for a sewing machine having a driver, a main shaft, and a needle bar. The bobbin casing assembly comprises a bobbin casing and an engaging member protruding outwardly from the bobbin casing, an upper end of the engaging member being disposed below an upper surface of the driver when an angle of rotation of the main shaft is substantially in a range of 5 DEG to 35 DEG , wherein the angle of rotation of the main shaft is 0 DEG when the needle bar is at a top dead point.