| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic case which is easy to manufacture, and can perform kick-opening and closing while it has a simple structure.SOLUTION: When a plastic case 10 is open, all of an upper surface 50, a lower surface 60, and a rear surface 70 swell outward. When front sides of the upper surface 50 and the lower surface 60 bend inward in this state, the upper surface 50 and the lower surface 60 bend with respect to the rear surface 70 at bending parts 75, 76. Then, the rear surface 70 deforms along shapes of the ribs 50A, 60A, and a periphery of a center deforms and dents inward. In trying to open the plastic case 10 again from this closed state, it is necessary to apply force required to invert and deform the rear surface 70. That is, the rear surface 70 as a whole acts as a plate spring, and thus, the plastic case 10 becomes a fully opened state automatically as long as the upper surface 50 and the lower surface 60 are opened a little. On the other hand, the plastic case becomes a fully closed state automatically as long as the upper surface 50 and the lower surface 60 are closed a little. |
