| 摘要 |
<p>A ring binder mechanism is disclosed as including wires/tabs for supporting two plates for relative pivotal movement, in which pairs of half-rings are mounted to the plates which are pivotably movable relative to each other between a first configuration in which the half-ring members are closed and the angle between the upper surfaces of the plates is less than 180 DEG , and a second configuration in which the half-ring members are open and the angle between the upper surfaces of the plates is more than 180 DEG , in which the wires/tabs are engaged with the plate members, and the plates are retained by the wires/tabs in a position in which the inner edges of the plates constantly abut each other, and a majority of the upper surfaces of the plates is allowed to be exposed to the environment. <IMAGE></p> |
