| 摘要 |
PROBLEM TO BE SOLVED: To provide a bobbin for sewing machine detachably accommodated in a bobbin accommodating member of a sewing machine that is effective for restricting an operation other than a supplying operation to a rotating direction for supplying a sewing yarn.SOLUTION: A bobbin for sewing machine 90 comprises a shaft portion 91 around which a sewing yarn is wound, two flange portions 92 and 93 provided in each end of the shaft portion 91 and extending to an intersecting direction to the shaft direction of the shaft portion 91, and a convex portion 94 protruded to an extending direction of the shaft portion 91 from the flange portion 92 among the two flange portions 92 and 93 and rotatably engaged in a concave portion 82 provided at an inner port 80 around the shaft portion 91. |
