An umbrella has a plurality of ribs attached to a runner by main struts. The umbrella has an anti-inversion mechanism formed of a plurality of anti-inversion struts. Each anti-inversion strut is pivotally coupled to one respective main strut and is pivotally connected to a floating joint member that is freely movable along a length of one respective rib. The anti-inversion mechanism also includes a stop that is fixedly attached to the rib and restricts the degree of travel of the floating joint member along the rib and is positioned to prevent the respective rib from inverting in response to an applied force.

A quick connect system is provided for a shade structure. Tire system includes a hub and a rib. Tire hub has an upper portion, a lower portion, and a rib engagement section. Tire rib engagement section comprises a groove. The groove comprises an annular bearing zone, which may be disposed between two facing walls of the hub. The rib comprises an elongate body having an inner end and an outer end, the inner end of the rib comprising a pivot member. The annular bearing zone is configured to support end portion of the pivot member of the rib.

A pivotal connection between hub assembly and ribs of an umbrella, includes a hub assembly having a top face and a bottom face, and multiple slots are defined in the outer periphery, and defined through the top face and the bottom face of the hub assembly. An installation face defined in one of the top face and the bottom face. Each slot has an inclined face defined in two opposite insides thereof, and each inclined face is located to communicate with the installation face. Each slot has a guide extending from each of the two opposite insides thereof. Multiple ribs each have a first end thereof pivotably connected to the slot corresponding thereto via the installation face. The first end of each rib has a first inclined portion to be matched with the inclined face corresponding thereto. The guides restrict the ribs from dropping from the slots.

A pivotal connection between hub assembly and ribs of an umbrella, includes a hub assembly having a top face and a bottom face, and multiple slots are defined in the outer periphery, and defined through the top face and the bottom face of the hub assembly. An installation face defined in one of the top face and the bottom face. Each slot has an inclined face defined in two opposite insides thereof, and each inclined face is located to communicate with the installation face. Each slot has a guide extending from each of the two opposite insides thereof. Multiple ribs each have a first end thereof pivotably connected to the slot corresponding thereto via the installation face. The first end of each rib has a first inclined portion to be matched with the inclined face corresponding thereto. The guides restrict the ribs from dropping from the slots.

Disclosed herein is a large umbrella configured to solve several existing deficiencies. The umbrella is configured for ease of operation, requiring very little effort for operation. This is achieved, in part, by use of a specially designed actuator arm used in conjunction with at least one pulley and counterbalanced weight system. Moreover, the umbrella canopy and framework is configured to allow the entire canopy to be lowered while remaining fully extended, so as to form a cover for a table into which its center pole is situated. Additionally, the umbrella canopy can be constructed with an extendible skirt. When unfurled, the skirt can extend the canopy cover so as to form an enclosure that fully surrounds the table, table legs, and chairs, for example.

A hand-push rotating umbrella comprises extension springs at one side of the supporting ribs where an upward acting force can be produced by means of the pretension force of the extension spring when the moveable runner is pushed up so that the moveable runner and upper rib supporting rods would not fall down affected by gravity, thus a stable umbrella closing state able to be achieved without providing the engagement structure and solving the problems of the existing reversely-folded umbrella produced by only able to stably close the umbrella by using the engagement structure. Moreover, through the collocation application of the upper runner and moveable runner in the present invention, the umbrella canopy would rotate to offset the impact force caused by the wind resistance or collision in the case of strong wind or umbrella rib collision with some foreign object or person, thus able to avoid stabbing and hurting other people and improve the umbrella use safety.

A hand-push rotating umbrella comprises extension springs at one side of the supporting ribs where an upward acting force can be produced by means of the pretension force of the extension spring when the moveable runner is pushed up so that the moveable runner and upper rib supporting rods would not fall down affected by gravity, thus a stable umbrella closing state able to be achieved without providing the engagement structure and solving the problems of the existing reversely-folded umbrella produced by only able to stably close the umbrella by using the engagement structure. Moreover, through the collocation application of the upper runner and moveable runner in the present invention, the umbrella canopy would rotate to offset the impact force caused by the wind resistance or collision in the case of strong wind or umbrella rib collision with some foreign object or person, thus able to avoid stabbing and hurting other people and improve the umbrella use safety.

An umbrella has a plurality of ribs attached to a runner by main struts. The umbrella has an anti-inversion mechanism formed of a plurality of anti-inversion struts. Each anti-inversion strut is pivotally coupled to one respective main strut and is pivotally connected to a floating joint member that is freely movable along a length of one respective rib. The anti-inversion mechanism also includes a stop that is fixedly attached to the rib and restricts the degree of travel of the floating joint member along the rib and is positioned to prevent the respective rib from inverting in response to an applied force.

An umbrella has a plurality of ribs attached to a runner by main struts. The umbrella has an anti-inversion mechanism formed of a plurality of anti-inversion struts. Each anti-inversion strut is pivotally coupled to one respective main strut and is pivotally connected to a floating joint member that is freely movable along a length of one respective rib. The anti-inversion mechanism also includes a stop that is fixedly attached to the rib and restricts the degree of travel of the floating joint member along the rib and is positioned to prevent the respective rib from inverting in response to an applied force.

Disclosed herein is a large umbrella configured to solve several existing deficiencies. The umbrella is configured for ease of operation, requiring very little effort for operation. This is achieved, in part, by use of a specially designed actuator arm used in conjunction with at least one pulley and counterbalanced weight system. Moreover, the umbrella canopy and framework is configured to allow the entire canopy to be lowered while remaining fully extended, so as to form a cover for a table into which its center pole is situated. Additionally, the umbrella canopy can be constructed with an extendible skirt. When unfurled, the skirt can extend the canopy cover so as to form an enclosure that fully surrounds the table, table legs, and chairs, for example.