A wind-resistant foldable umbrella includes a main shaft; a runner mounted around the main shaft and sliding between an opening position and a folding position; a first canopy and a second canopy with a central portion thereof fixed to the runner and the top end of the main shaft, respectively; a plurality of the umbrella ribs and a plurality of the pulling elements peripherally disposed around the main shaft and between the first canopy and the second canopy. Two ends of the pulling elements are connected to the corresponding umbrella rib and the runner, respectively. When the runner is at the opening position, the umbrella ribs expand toward the bottom end of the main shaft, so the first and the second canopy expand. Moreover, the umbrella ribs are pulled toward the main shaft by the resilient force from each pulling element.

A rib structure of an inverse folding umbrella includes an umbrella pole assembly and a plurality of umbrella rib components; the umbrella pole component including an umbrella pole a first umbrella receptacle and a second umbrella receptacle, the first and second umbrella receptacles; the umbrella rib component including a first bar, a connecting piece, a tail bead, a first pivot connecting base, a movable pivot, connecting base, the movable pivot connecting base between the third bar and the fourth bar, which makes the third bar and the fourth bar connected to each other and drive each other to move, and relieve the wind resistance upon the second bar, such that the second bar will not distort easily and can be kept in good condition after a long time of use, and the strength of the whole umbrella rib structure is greatly enhanced.

A wheelchair having, in an embodiment, a frame, a seat, a plurality of wheels and an umbrella assembly. The umbrella assembly has a canopy, a canopy holder and a driving device. During opening, the canopy slides upward through the canopy holder and extends outward.

An inversely foldable automatic umbrella includes a main shaft; an operating sleeve and a connecting sleeve mounted around the main shaft; a compression spring with two ends thereof contacting the connecting sleeve and the operating sleeve, respectively; a first canopy with a central portion thereof fixed to the operating sleeve; a second canopy with a central portion thereof fixed to the top end; a skeleton disposed between the first canopy and the second canopy; and a pull-moving mechanism having a sliding unit and a connecting unit. The sliding unit is slidingly disposed on the skeleton. Two ends of the connecting unit are pivotally disposed on the sliding unit and the operating sleeve, respectively. When the operating sleeve is at a folding position to fold up the first canopy and the second canopy, the skeleton is allowed to completely adhere to the main shaft.

Disclosed herein are retractable umbrella frame devices comprising a base body structure at least partially surrounding a central axis structure. The central axis structure can be connected to a skeletal frame structure comprising a plurality of arms having a first end connected to the central axis structure and a second free end. The plurality of arms can be moveably connected to the central axis structure, such that the arms can be retracted into or extended from the base body structure. In some embodiments, the base body structure comprises open portions along its length. In some embodiments, the retractable umbrella frame devices further comprise one or more secondary support structures at least partially surrounding the base body structure. In some embodiments, the retractable umbrella frame devices can further comprise guide structures connected to the one or more secondary support structures and the arms of the skeletal frame structure.