| 摘要 |
PURPOSE: To simplify an anti-rotation mechanism for detaching a lid from a container by forming a non-circular joint moving member connected to a rivet opening portion by part of an axis disposed opposite the rivet opening as the anti-rotation mechanism. CONSTITUTION: A detachable lid 1 is completely removed by a circularly pitched channel 3 formed at outside a lid plate 2. A perforating blade tip 4 for a pulling notch 5 is disposed on the pitched channel 3 and the pulling tongue 5 has a gripping tab 6 on the rear end thereof. A mounting portion 7 of the pulling tongue 5 is provided with an elliptical rivet opening 8 which encloses an elliptical axis 9 of a rivet 10 made of the lid plate 2 and the rivet 10 has a longitudinal axis line 11. This enables simplification of the anti-rotation mechanism. |
