BOBBIN HOUSING, HOOK COMPRISING A BOBBIN HOUSING OF THIS TYPE AND SEWING MACHINE COMPRISING A HOOK OF THIS TYPE

摘要

PURPOSE: A bobbin housing, a hook including the same, and a sewing machine are provided to insert a yarn structure to the sewing machine easily, and to secure safety and credibility of sewing operation. CONSTITUTION: A bobbin housing(25) includes a housing port(33) receiving a yarn structure winded. An inner diameter of a bobbin accepter of the housing port is adjusted in a range of the increased inner diameter and a minimum inner diameter. The bobbin acceptor is preloaded by a preloading unit in a state of the minimum diameter. The housing port includes a slit expanded to the bottom wall inside of the housing port.