US Patent 7641048 Toolbox assembly

A toolbox assembly includes a toolbox casing and at least one auxiliary plate. The toolbox casing has at least one surface recess including a mounting segment defined in a front face and a fixing segment defined in a side face. The mounting segment has at least one slot. The at least one auxiliary plate has a first portion corresponding to the mounting segment and a second portion corresponding to the fixing segment. The first portion has at least one flange extended from an outer peripheral thereof and corresponding to the at least one slot. The at least one flange engages with the at least one slot. The first and second portion respectively and tightly fit within the mounting and fixing segment for protecting the toolbox assembly.