| 摘要 |
PROBLEM TO BE SOLVED: To provide a loose-leaf binder capable of improving operability of the loose-leaf binder by assisting an operation of rotational displacement of boards after an operation of user's relative displacement of the boards without lowering production efficiency for the loose-leaf binder.SOLUTION: A loose-leaf binder comprises a slid opening mechanism 6 in which mutually adjacent portions of two boards 2a, 2b slide while contacting each other due to relative displacement in an extension direction of the boards 2a, 2b to cause a rotational displacement of the boards 2a, 2b to separate tips 4a, 4b of a pair of half ring parts 3a, 3b.SELECTED DRAWING: Figure 1 |
