| 摘要 |
<p>PROBLEM TO BE SOLVED: To mount a lid on a main body by one touch by providing a guide rib extending in the direction perpendicular to the direction in which a movable locking piece and a fixed locking piece are extended in one of a lid and a main body and in the other, providing a slit engaged with it and a guiding inclination. SOLUTION: When a movable locking piece 5 is made to come near to a fixed locking piece 6 by pushing the upper surface of a lid 3, the tip of a guide rib 8 is made to abut on one side of an inclination 9b, and the guide rib 8 is guided by the inclination 9b and inserted into a slit 9a, so that the lid 3 is positioned relative to a main body 2. After that, the tip part of the movable locking piece 5 is made to abut on the tip part of the fixed locking piece 6, and further, when the lid 3 is moved downward, the movable locking piece 5 is elastically deformed, the locking pawl 5a of the movable locking piece 5 is engaged with the locking pawl 6a of the fixed locking piece 6, and the lid 3 is closed and locked to the main body 2. At that time, the fixed locking piece 6 is held between a lock release preventive rib 7 and the movable locking piece 5 to prevent its displacement in left and right directions. Accordingly, the lid can be mounted on the main body by one touch and at the same time its locking operation can be smoothly performed.</p> |
