| 摘要 |
PURPOSE:To hold a lid in a state stopping halfway by rotating the lid in a direction for opening until its gravity center comes behind a vertical line passing through a pivot axis and making a protrusion provided on the lid engaged with a first elastic stopper. CONSTITUTION:When a lid 3 is opened from a closed state, a locking claw 16 is engaged with a second elastic stopper 9. When the lid is about to be further opened, a rib 7 is bent inward to have the second elastic stopper 9 disengaged from the locking claw, thereby further opening the lid. If it is further opened, the locking claw is engaged with a first elastic stopper 8. In this state the gravity center G of the lid is behind a vertical line L passing through a pivot axis 5 by an angle K, and if the lid is released from a hand, the lid 3 moves to rotate in a direction for opening but prevented by engagement of the first elastic stopper 8 and the locking claw. When the lid is further opened, the rib 7 is bent inward to have the first elastic stopper 8 disengaged from the locking claw, thereby enabling the lid to be further opened. |
