Storage boxes

Abstract

A box body has fitting ribs and fitting target portions that are provided on a lower end portion of side walls of the box body and used when a plurality of box bodies are nested. The lower end portions of the side walls are connected to the bottom wall of the box body. In other words, the fitting ribs and the fitting target portions are provided on the side walls at areas subjected to a relatively small amount of displacement. Therefore, the amount of displacement of the fitting ribs and the fitting target portions, which may occur when the sidewalls subjected to deflection deformation, can be significantly reduced. Therefore, even when the box body has a substantially rectangular parallelepiped box shape opening upward and forward, the box bodies in the nested state achieve reliable stability.

1 . A storage box comprising:
 a box body formed into a box shape opening upward and forward, the box body having an interior configured as a storage section; and   an upper cover detachably attached to the box body, the upper cover being configured to close an opening on an upper side of the box body, wherein   the box body is configured to be nestable with another box body in such a manner as to allow the box bodies to be stacked in a vertical direction, and   a lower end portion of a side wall of the box body comprises a fitting portion and a fitting target portion formed to be fitted to each other when the box bodies are nested.   
     
     
         2 . The storage box according to  claim 1 , wherein
 the fitting portion protrudes widthwise inward of the box body from the side wall and is formed into a rib shape extending in the vertical direction,   the fitting target portion comprises a groove portion opening widthwise outward of the box body and downward, and   when the box bodies are nested, an upper end portion of the fitting portion of the box body disposed below is inserted into an interior of the groove portion of the box body disposed above.   
     
     
         3 . The storage box according to  claim 1 , wherein an upper end surface of the fitting portion and an upper end surface of the groove portion are inclined upward in front view as they go widthwise inward of the box body. 
     
     
         4 . The storage box according to  claim 1 , further comprising a lid that is detachably attached to the box body for opening and closing an opening on a front side of the box body, wherein
 the upper cover is provided with a holding mechanism on a lower surface of the upper cover, and   the holding mechanism holds the lid in a state of being detached from the box body.   
     
     
         5 . The storage box according to  claim 4 , wherein the holding mechanism comprises a holding claw engageable with an outer peripheral edge portion of the lid. 
     
     
         6 . The storage box according to  claim 4 , further comprising:
 a supporting portion at a front end portion of a bottom wall of the box body, the supporting portion being configured to rotatably support the lid, wherein   the supporting portion is formed in a recessed shape opening downward in side view, and extends over an entire width of the box body.   
     
     
         7 . The storage box according to  claim 1 , further comprising:
 a drawer slidably stored in the storage section so as to be movable in a front-back direction, the drawer being formed into a box shape opening upward and forward or upward, wherein   the drawer is configured to be nestable with another drawer in such a manner as to allow the drawers to be stacked in the vertical direction.   
     
     
         8 . The storage box according to  claim 7 , wherein
 the drawer is formed into a box-shape opening upward and forward,   a front cover is detachably attached to the drawer,   the front cover closes the opening on a front side of the drawer, and   the front cover has a thickness dimension smaller than a height dimension of the fitting portion in the vertical direction.   
     
     
         9 . The storage box according to  claim 7 , wherein
 the drawer is formed into a box-shape opening upward and forward,   a front cover is detachably attached to the drawer,   the front cover closes the opening on a front side of the drawer,   a bottom wall of the box body is provided with a cover storage section, and   the cover storage section is configured to store the front cover in a state of being detached from the drawer.   
     
     
         10 . The storage box according to  claim 7 , further comprising:
 a frame member configured to cover the box body and the upper cover, the frame member being detachably attached to front end portions of the box body and the upper cover,   the frame member being provided with an insertion portion that allows insertion of the drawer when the drawer is slid, wherein   the frame member has a thickness dimension smaller than a height dimension of the fitting portion in the vertical direction.   
     
     
         11 . The storage box according to  claim 7 , further comprising:
 a frame member configured to cover the box body and the upper cover, the frame member being detachably attached to front end portions of the box body and the upper cover,   the frame member being provided with an insertion portion that allows insertion of the drawer when the drawer is slid, wherein   a bottom wall of the box body is provided with a frame member storage section, and the frame member storage section is configured to store the frame member in a state of being detached from the box body and the upper cover.