| 摘要 |
To prevent binder rings from opening by a loose-leaf binder, a locking member 44 included a member integrally comprising a pivoted portion 56 pivotally mounted in a first actuating member 10 , an engaging projection 46 which engages with an engaging recess 38 of a second actuating member 11 to prevent a movement of the second actuating member 11 , an elastic portion 52 which abuts against an upper surface of a first base plate 1 to urge the engaging projection 46 to the engaging recess 38 , and a finger hooking portion 58 , whereby under a condition where the binder rings 3, 4 are closed, movements of both the base plates 1, 2 are prevented against an opening force acting upon the binder rings 3, 4 , and when a finger hooking portion 58 is pushed toward another finger hooking portion 20 , the engaging projection 46 is disengaged from the second actuating member 11 against the elastic force of the elastic portion 52 , and both the base plates 1, 2 are then moved in such directions as to open the binder rings 3, 4.
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