Size-changeable umbrella

Abstract

The invention discloses a size-changeable umbrella. The umbrella includes an umbrella handle, ribs and main umbrella cloth, wherein the ribs are arranged on the umbrella handle, and the main umbrella clothe covers the ribs. The umbrella further includes assistant umbrella cloth, supporting ribs, a driving mechanism and a supporting mechanism, wherein the assistant umbrella cloth is fixed to the periphery of the main umbrella cloth, one end of each supporting rib is hinged to the free end of the corresponding rib, and the other end of each supporting rib is fixed to one end, away from the main umbrella cloth, of the assistant umbrella cloth, the driving mechanism drives all of the supporting ribs to rotate till the supporting ribs are attached to the main umbrella cloth or till the assistant umbrella cloth is stretched, and the supporting mechanism is used for keeping the assistant umbrella cloth stretched by the supporting ribs. According to the umbrella, the expansion of the umbrella cover can be achieved by the rotation of the supporting ribs which are driven by the driving mechanism, and the stretched state is kept by the supporting mechanism after the umbrella cover is expanded; the recovery of the umbrella cover can also be achieved by the driving mechanism, the size conversion of the umbrella cover is achieved, and therefore the umbrella adapts to different requirements.

Description

technical field [0001] The present invention relates to an umbrella, more specifically, it relates to a reversible umbrella. Background technique [0002] Umbrella, a common daily necessities, includes straight bone umbrellas, folding umbrellas, etc. The structure of straight bone umbrellas usually includes umbrella rods, umbrella ribs, umbrella cloth and umbrella handles, and the umbrella handles are set at the lower end of umbrella rods. The umbrella middle rod is provided with an upper nest, a middle nest and a lower nest in turn from top to bottom, the upper nest is fixedly arranged on the upper end of the umbrella middle rod, and the middle nest and the lower nest are slidably set on the umbrella middle rod Above, the ribs include long ribs, short ribs and support rods, one end of the long ribs is pivotally connected to the upper nest, one end of the short ribs is pivoted to the middle nest, and the other end is pivoted Connected to the long umbrella rib, one end of th...

AI Technical Summary

Problems solved by technology

[0003] No matter what kind of umbrella, many people often have a contradictory idea about the use of umbrellas in daily life, or contradictory issues. When the umbrella is not in use, I hope it is relatively small and does not take up too much space for storage. , easy to carry; when in use, when the wind and rain are strong or when many people share it, it is hoped that the umbrella surface can be large, and the area of ​​the umbrella is large enough, so you don’t have to worry about not being able to cover the wind and rain; and when the wind and rain are small , and hope that the umbrella surface can be small enough to just block the wind and rain, because the umbrella surface is too large to carry; and the umbrellas that are common in life, different specifications of umbrellas are equipped with different sizes of umbrella surfaces, and the size of the umbrella surface cannot be changed later. Therefore, the common umbrella structure in life cannot meet the contradictory needs of people.

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