ASSISTING TOOL FOR UNBINDING KNOT ON STRINGSHAPED MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an assisting tool for unbinding a knot on a string-shaped material which can easily loosen the knot on the string-shaped material and bring the knot into a state where it is easily unknotted. SOLUTION: This assisting tool for unbinding a knot on a string-shaped material has a structure comprising the following components: the first needle 20 having a roughly J-shape whose head 20a is curved; the second needle 30 whose head 30a can be buried in a dent part 20c formed on an internal side face of the straight part 20b of the first needle 20; a diameter-enlarging mechanism which shifts between a closed state in which the tip 30a of the second needle 30 touches the inner side face of the straight part 20b of the first needle 20 and an open state in which the tip 30a of the second needle 30 is apart from the inner side face of the straight part 20b of the first needle 20 by actuating at least one of the first needle 20 and the second needle 30; and a spring 13 generating the force bringing the closed state.