| 主权项 |
1. A container which shows a box shape open at a top face, and allows folding down one pair of first sidewalls facing each other by turning around lower end portions and then folding down the other pair of second sidewalls by turning around lower end portions, the container comprising:
a bottom-face main projection that projects from a region of a bottom face of the container at an inner side than directly under the first sidewall and the second sidewall, and is fitted inside an opening in a top face of the container which is a lower layer when the containers are stacked; a bottom-face sub-projection that projects, at four corners of the bottom face of the container, from a region directly under the first sidewall and the second sidewall, and has a lower face flush with a lower face of the bottom-face main projection; a projection receiving recess that is formed across the first sidewall and the second sidewall adjacent to each other in corner portions at four corners of the top face of the container, and receives the bottom-face sub-projection of the container which is an upper layer when the containers are stacked; a corner engaging recess formed in the lower face of the bottom-face sub-projection; and a corner engaging projection that projects from a bottom face of the projection receiving recess, and is engaged with the corner engaging recess of the container which is an upper layer when the containers are stacked to restrain a lateral shift of the upper and lower containers with respect to each other. |
