Patent attributes
A tool box includes a base, a button, a cover and two hinges. The button is located in a recessed area of the base and connected to a fixing member that is connected to the recessed area. The button has a resilient arm extending from each of two ends thereof, and each resilient arm has a protrusion which is engaged with the positioning hole of the fixing member. Two resilient piece extending toward each other from the top edge thereof and a flange extends from one side of the button. The cover is pivotably connected to the base by the two hinges. The cover has a locking member so as to be engaged with the flange of the button. The two resilient piece push the cover upward when the cover is unlocked from the base. The hinges are not loosened after frequent use.
