US Patent 9839268 Wind-resistant umbrella frame structure

A wind-resistant umbrella frame structure is applicable to an arrangement of dual canopies and includes a primary frame and a secondary frame. The primary frame has an inner end pivotally connected to a crown and an outer end connected to the annular lower canopy. The secondary frame is pivotally connected to the runner and has an opposite end pivotally connected to the primary frame. The primary frame includes an internal rib, an intermediate rib, an external rib, and a traction rib assembly, and also includes an intermediate rib return wire, an external rib return wire, and a collapse spring. The umbrella frame structure allows air flows to be readily conducted out and ensures the service life of the canopies.