| 摘要 |
<p>PURPOSE: To surely and tightly lock a lid body with a case main body with simple constitution by using locking band part as the means engaging the lid body with the case main body and locking them so as to be held with a locking part provided in the band part and the inner side frame body of the case main body from the inside and the outside. CONSTITUTION: The locking band part 10 is integrally erected in the center part of the opening side peripheral of the bottom surface of the case main body like being confronted with the outer wall surface of the opening side peripheral wall of an inner frame body at a prescribed interval. In the locking band part 10, a notched part 11 is formed over the range from a bottom part to an intermediate part and an projected line 18 is formed along the upper edge of the notched part 11 and the bottom surface of the line 18 forms a downward locking surface. Corresponding to the locking band part 10, the projected part 19 of a receiving side freely lockable and unlockable is provided in the outer wall surface of the opening side peropheral wall of the outer frame body of a lid body 2 by being restrained with the projected line 18 to form an upward locking surface, and this projected part constitutes the locking means for locking and unlocking the locking band part 10. Thus, the locking band part 10 is locked through the projected line 18 and the projected part 19.</p> |
