US Patent 10562557 Foldable golf trolley

A foldable golf trolley includes a standing tube assembly movably coupled with a front wheel assembly through a front wheel connecting rod. A bottom tube assembly is connected with the front wheel assembly and the standing tube assembly. A four-rod linkage is formed by the standing tube assembly, the front wheel connecting rod, the front wheel assembly and the bottom tube assembly. The standing tube assembly is connected with the left and right wheel assemblies through a left and right wheel connecting rod assembly respectively. The left/right wheel connecting rod assembly includes a left/right wheel driving connecting rod and a left/right wheel driven connecting rod, and a left/right wheel four-rod linkage is formed by the left/right wheel driving connecting rod, the left/right wheel assembly, the left/right wheel driven connecting rod and the bottom tube assembly. The trolley could be quickly folded into a compact structure and unfolded.