An umbrella frame comprising a shaft, a canopy frame with a plurality of ribs around the shaft, each rib being collapsible, wherein the canopy frame is deployable to a length RLT, and collapsible to a length CL, such that the ratio RLT:CL is improved over existing umbrellas.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.

A rod of an umbrella is a rod having a tail end and an extension rod having two ends; one end of the extension rod is detachably connected to the tail end of the rod; the rod is a hollow tube in which the extension rod is inserted, a limiting mechanism is located inside the rod for limiting insertion of the extension rod; the extension rod is made of rigid material or elastic material. When in use, the assembly can be completed by inserting the extension rod into the tail end of the rod, so that the rod becomes longer and is very easy to use. In the present invention, the rod is simple and reasonable in structure and easy and quick for operation and assembly, which can greatly increase the shading area, meet the functional requirements of the product, and reduce the packaging and transportation costs.

The umbrella having an expandable canopy is an umbrella with a canopy of adjustable size. The umbrella having an expandable canopy is an umbrella that is further modified with a plurality of additional runners and stretchers which, when opened, are used to extend the effective diameter of the canopy to increase the protected area underneath the umbrella. The umbrella having an expandable canopy comprises a modified umbrella, a secondary canopy, a plurality of secondary stretchers, a plurality of modified ribs, a secondary runner, and a secondary top tip spring.

The umbrella having an expandable canopy is an umbrella with a canopy of adjustable size. The umbrella having an expandable canopy is an umbrella that is further modified with a plurality of additional runners and stretchers which, when opened, are used to extend the effective diameter of the canopy to increase the protected area underneath the umbrella. The umbrella having an expandable canopy comprises a modified umbrella, a secondary canopy, a plurality of secondary stretchers, a plurality of modified ribs, a secondary runner, and a secondary top tip spring.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.