BOBBIN CASE OF ROTARY SHUTTLE DEVICE FOR SEWING MACHINE

摘要

PURPOSE: A bobbin case of a rotary shuttle device capable of guiding the lower thread released from a bobbin to supply continuously, stably to a sewing area is provided, thereby preventing damage and breakage of the lower thread and always supplying it in an optimum direction and tension by passing it through a lower thread path. CONSTITUTION: The bobbin case comprises a body(16) and a guide member(12). The body comprises: a rear part(18a) formed by a fixing hole(22) and a controlling hole(26); a thin part(18b) formed by a first supporting hole(28), a second supporting hole(29) and a supporting flap(30); and a side part(18) formed by a discharge hole(32) for discharging the lower thread released from a bobbin from the inside of the side part to the outside. The guide member(12) comprises a first fixing flap(44) and a second fixing flap(45) each inserted into the first and the second supporting of the body to form a path through which a lower thread is passed.