| 摘要 |
PROBLEM TO BE SOLVED: To provide a lunchbox free from a risk of opening a container main body as the result of coming out of a top plate accidentally during portable use. SOLUTION: The lunchbox consists of the container main body having an open top and the top plate for covering the top of the container main body. Flaps which can be rotated in a vertical direction are pivotally connected to both of the sides of the top plate, and fitting means formed inside of the flaps and means to be fitted formed on the outside of the opening edge of the container main body constitute engaging means to be fitted to in the state of being attachable and detachable to/from each other. The engaging means constitute locking means formed of a slider provided in the state of being slidable in the vertical direction with respect to the flaps, fitting pieces formed inside of the slider so as to be engaged in the state of being attachable and detachable to/from the means to be fitted via sliding of the slider and an operation part formed outside of the slider so as to slide-operate the slider from the outside of the flaps. |
