LOOSE-LEAF FILING TOOL WITH LOCK

PROBLEM TO BE SOLVED: To permit the maintaining of lock surely by a method wherein a pushing member restraining the mutual aperture of two pieces of mutually intersecting operating knobs attached to one end of two sheets of substrate, having semi-circular filing rings and whose inner sides are abutted against each other, is provided. SOLUTION: Slender substrates 1, 2, abutted against each other through the inner sides thereof, are provided integrally with a plurality of semi-circular filing rings 3, 4, abutted against each other. Further, operating knobs 10, 11 are extended from respective one end parts orthogonally and obliquely substantially with respect to the direction of an axial line so as to be intersected with each other. A pushing sheet 17 is provided so as to cover the outer surface of the operating knob 10. The operating knobs 10, 11 and the pushing sheet 17 are arranged so as to be contacted with each other or to remain very small gaps among them. According to this method, the positional relation of the operating knobs 10, 11 is regulated so as not to be separated so that the retaining piece 16 will not run out of a retaining projection 15 by the restriction of the pushing sheet 17 even when the operating knobs 10, 11 are pushed by an external force in the direction of the axial line.