An umbrella assembly is described. Manual movement of a knob away from a handle moves each rib and a canopy to a position outside of an inner hollow component of a frame such that the umbrella assembly is in an open and in-use position. In the open and in-use position, a shape of each rib of the set of ribs is curved. Elastic potential energy of a spring located within the inner hollow component of the frame retracts each rib and the canopy into the inner hollow component of the frame. Each rib has a bending resistance such that when each rib is retracted into the inner hollow component of the frame, a shape of each rib moves towards a planar shape.

An umbrella assembly is described. Manual movement of a knob away from a handle moves each rib and a canopy to a position outside of an inner hollow component of a frame such that the umbrella assembly is in an open and in-use position. In the open and in-use position, a shape of each rib of the set of ribs is curved. Elastic potential energy of a spring located within the inner hollow component of the frame retracts each rib and the canopy into the inner hollow component of the frame. Each rib has a bending resistance such that when each rib is retracted into the inner hollow component of the frame, a shape of each rib moves towards a planar shape.

A straight-pole sun umbrella hand-cranking structure comprises a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is integrally fixed with one side of the standing pole, and a gear is arranged within the first and the second outer shells. A cranking shaft passes through the gear and is connected to an anti-slip mechanism, and a cranking handle is externally connected to the cranking shaft. The anti-slip mechanism comprises a torsion spring, wherein the torsion spring is sleeved on the end portion of the cranking shaft. The torsion spring is arranged at the tail end of the cranking shaft such that the anti-slipping performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.

A straight-pole sun umbrella hand-cranking structure comprises a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is integrally fixed with one side of the standing pole, and a gear is arranged within the first and the second outer shells. A cranking shaft passes through the gear and is connected to an anti-slip mechanism, and a cranking handle is externally connected to the cranking shaft. The anti-slip mechanism comprises a torsion spring, wherein the torsion spring is sleeved on the end portion of the cranking shaft. The torsion spring is arranged at the tail end of the cranking shaft such that the anti-slipping performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.

A straight-pole sun umbrella hand-cranking device comprises a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is fixed on one side of the standing pole, and a rope winding wheel is mounted within the first and the second outer shells. The rope winding wheel is connected to a cranking shaft, and the cranking shaft is propelled to rotate through a cranking handle connected with the cranking shaft. An anti-slip mechanism is arranged on the cranking shaft. The anti-slip mechanism comprises a torsion spring, the torsion spring is sleeved on the cranking shaft. The rope winding wheel achieves easy winding or unwinding of the ropes, and the anti-slip performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.

A straight-pole sun umbrella hand-cranking device comprises a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is fixed on one side of the standing pole, and a rope winding wheel is mounted within the first and the second outer shells. The rope winding wheel is connected to a cranking shaft, and the cranking shaft is propelled to rotate through a cranking handle connected with the cranking shaft. An anti-slip mechanism is arranged on the cranking shaft. The anti-slip mechanism comprises a torsion spring, the torsion spring is sleeved on the cranking shaft. The rope winding wheel achieves easy winding or unwinding of the ropes, and the anti-slip performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.

A patio umbrella that includes a tilt mechanism for adjusting a shade angle of the umbrella canopy. The umbrella canopy can be opened and closed by a crank and spool mechanism. The tilt mechanism can be controlled by an actuator that operates independently of the crank and spool mechanism. The actuator can be mounted on the upright pole of the patio umbrella.

A hand-push umbrella comprises a column (1), an upper nest (2) movably disposed at the top of the column (1), a lower nest (3) movably sleeved on the column (1), a plurality of long rods (10) having an upper end mounted on the upper nest (2) and a plurality of first short rods (20) having a lower end mounted on the lower nest (3) and an upper end hinged to the middle portion of the long rod (10); a first retainer ring (4) is sleeved on the column (1) above the lower nest (3) and is fixed with the column (1), a handle (8) is connected to the bottom of the lower nest (3), a handle control mechanism is disposed inside the lower nest (3). The umbrella is simple and reasonable in structure, and can be easily and fast unfolded and folded. A tray (7) and a plurality of second short stretchers (30) greatly strengthen the support to the canopy (100) and improve the stability of the structure.

An umbrella is provided that includes a hollow pole, a shade assembly, and a lift assembly. The shade assembly is coupled with an upper portion of the hollow pole. The shade assembly includes an upper hub, a lower hub, and a shade structure coupling the upper hub to the lower hub. The shade structure supports a shade member and the lower hub is moveable along the hollow pole. The lift assembly is disposed within the hollow pole. The lift assembly includes a gas spring and a cord. The cord has a first end coupled with the hollow pole and a second end coupled with the lower hub. When closing the umbrella, the cord applies a load to compress the gas spring. When opening the umbrella, the gas spring applies a load to the cord, to cause the lower hub to be moved upward.

An umbrella is provided that includes a hollow pole, a shade assembly, and a lift assembly. The shade assembly is coupled with an upper portion of the hollow pole. The shade assembly includes an upper hub, a lower hub, and a shade structure coupling the upper hub to the lower hub. The shade structure supports a shade member and the lower hub is moveable along the hollow pole. The lift assembly is disposed within the hollow pole. The lift assembly includes a gas spring and a cord. The cord has a first end coupled with the hollow pole and a second end coupled with the lower hub. When closing the umbrella, the cord applies a load to compress the gas spring. When opening the umbrella, the gas spring applies a load to the cord, to cause the lower hub to be moved upward.