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QUICK CHANGER / Trolley case


“Quick changer” is an optimized solution to the design of the trolley case, which could switch rapidly between pulling and lifting scenarios.
When we travel around, trolley cases are definitely good helpers. On the flat ground, we just need to pull them. But when we meet some stairs, it is unavoidable to lift them up: first we need to push poles back, then move our hands to a different handle attached the case. After lifting the case up the stairs, we then move our hands back to the pole handle and draw them out and keep going. This is a series of annoying processes and needs to be changed.


Carnegie Mellon University

Carnegie Mellon University
PA, United States


Carnegie Mellon University

Carnegie Mellon University
Pittsburgh, United States

Ning Zhao