Patent ID: 7080604

Claim:
A lower thread supplying apparatus for a sewing machine, the lower thread supplying apparatus provided at an inner portion of a bed portion of the sewing machine, comprising: a bobbin accommodating portion for detachably accommodating a lower thread bobbin from an opening part provided at a needle plate; a tension applying portion for hitching a lower thread extracted from the lower thread bobbin so as to apply tension to the lower thread; a lower thread cutting knife fixed at an end portion of a lower thread passing route to ensure a predetermined length of the lower thread which is applied from the lower tread bobbin to cut the lower thread; a cover for covering the opening part, the cover being capable of opening and closing; a cover plate fixed so as to be lower than the cover and higher than the tension applying portion for covering around the lower thread bobbin, the cover plate having an edge portion which is cut out in order to expose an upper portion of the lower thread bobbin; a bending portion provided at a part of the edge portion of the cover plate for bending the lower thread from a lower side of the cover plate to an upper side of the cover plate; a first guide portion for introducing the lower thread from the tension applying portion to the bending portion; and a second guide portion for introducing the lower thread from the bending portion to the lower thread cutting knife, wherein the bobbin accommodating portion, the tension applying portion, the bending portion and the lower thread cutting knife are provided at an inner area of the opening part.