| 摘要 |
PROBLEM TO BE SOLVED: To prevent the side edges of a thin and synthetic resin-made shelf board without rigidity from being separated from the inner surfaces of side boards by providing opening prevention mechanisms for preventing the opening of the both side boards in the side edges of the shelf board. SOLUTION: A bending shelf board 6A and a plane shelf board 6B are provided with engagement pieces 16 being the opening prevention mechanism for preventing the opening of the left and right side walls 4. The depth dimension of the bending shelf board 6A is set to be longer than the depth dimension of a shelf main body 5 so that the front edge 6a of the bending shelf board 6A is arranged to be projected as compared with the insertion ends 2c of the side boards 2 in the shelf main body 5. The rear end surfaces of the left and right side edges in a projected area are inclined to be nearly in parallel with the front surfaces of the side boards 2, the bending shelf board 6A is inserted to a prescribed position between the side boards 2 and, then, engagement pieces 16 to be engaged with the insertion ends 2c of the shelf main body 5 are obtained. That is, the insertion ends 2c which are easily opened in a separating direction because of being an open end are disposed between the left and right engagement pieces 16 being a pair and the insertion ends 2c are held by the engagement pieces 16 from an outer part so that the left and right side boards 2 are restricted by the engagement pieces 16 even when their separating distance is enlarged.
|
