Patent ID: 7918515

Claim:
A modular shelving system comprising: a panel assembly having multiple panels, each panel having two sides being opposite to each other; and multiple mortises being formed in the sides of the panel; at least one chamber be formed between the panels; and at least one quadrangular open end communicating with the at least one chamber; multiple connection bars, each connection bar being connected to at least two panels and having an axial direction; an inner surface; an outer surface being opposite to the inner surface; two side surfaces being opposite to each other and adjacent to the inner surface and the outer surface; and multiple housing channels being formed in the inner surface and through the side surfaces and each housing channel extending along a direction perpendicular to the axial direction and having a slot being formed through an inner surface of the housing channel and the outer surface of the connection bar; and multiple connectors being respectively mounted in the housing channels of the connection bars and each connector being cross-shaped and having a junction being mounted in a corresponding housing channel and comprising four shoulders being formed at right angles to each other, wherein one shoulder of the junction is secured in the slot of the corresponding housing channel; and multiple arms being integrally and inseparably formed on and protruding from the shoulders and respectively extending into corresponding mortises of the panels.