Patent attributes
A slot assembly includes a base, a tray and a fastener. The base has an accommodating space having an opening end. The tray is movably located in the accommodating space. The tray has a bearing surface and is movable between a removed position and an inserted position. The tray is moved from the removed position to the inserted position by being pushed by a workpiece. The fastener is movably disposed on the tray. When the tray is at the removed position, the fastener is at a released position, and a second engaging portion of the fastener is located away from the bearing surface and detached from the first engaging portion. When the tray is at the inserted position, the fastener is at a fixed position, and the second engaging portion of the fastener is located close to the bearing surface and fixed to the first engaging portion.