Retractable umbrella

Abstract

A folding umbrella mainly comprising a first and a second set of pivoting members, a first and second pivot joint for connecting the branch umbrella frame, a upper main umbrella frame and a lower main umbrella frame, and the first set of pivoting members and the second pivot joints are connected with the branch umbrella frame, the first set of pivoting members and the first pivot joint are pivoted together, the first pin joint and the second set pivoting members are in pin joint drawing connection through the hooks on the two ends of a metallic tension rod, forming a pivoting umbrella frame and achieving the non-rivet joint between the umbrella frames with a small folding column.

Description

technical field [0001] The invention relates to a collapsible umbrella, in particular to an FRP collapsible umbrella with reinforced ribs, convenient assembly and small volume after collapsing. Background technique [0002] In the field of umbrella technology, there are many designs to improve the structure of the folding umbrella, and the typical two-section folding umbrella structure, such as Figure 9 As shown, it is mainly aimed at improving the rib structure of the folding umbrella. This improved design still uses the general riveting method for the pivot joint structure of the folding joints P1-P5 between the ribs. Manufacture requires cumbersome riveting procedures and manual operations to complete the assembly, and it is not easy to control the riveting quality of joints P1-P5. A folding umbrella has at least 30 to 40 pivotal joints, and only one pivotal joint is required in manufacturing Poor quality control is enough to cause the ribs of the foldable umbrella to ru...

AI Technical Summary

Problems solved by technology

[0002] In the field of umbrella technology, there are many designs to improve the structure of the folding umbrella, and the typical two-section folding umbrella structure, such as Figure 9 As shown, it is mainly aimed at improving the rib structure of the folding umbrella. This improved design still uses the general riveting method for the pivot joint structure of the folding joints P1-P5 between the ribs. Manufacture requires cumbersome riveting procedures and manual operations to complete the assembly, and it is not easy to control the riveting quality of joints P1-P5. A folding umbrella has at least 30 to 40 pivotal joints, and only one pivotal joint is required in manufacturing Poor quality control is enough to cause the ribs of the folding umbrella to rust and get stuck after a period of use, and the riveted parts are also where the stress is concentrated, and the ribs are likely to break if a little force is applied

[0003] Although the pivot joint mechanism of the FRP umbrella can solve the shortcomings of rust caused by riveting the umbrella ribs at present, the rib structure of the FRP umbrella is made of FRP ribs in order to take into account the supporting stress of the umbrella frame. Round rod body, in order for the FRP round rod body to be pivotally connected with the honeycomb and umbrella ribs, the two ends and the middle of the FRP round rod body need to be respectively connected with different plastic injection connection components and pivot joint components, resulting in FRP The large size of the umbrella rib assembly itself makes the umbrella skeleton quite large, making it difficult to store, pack and transport, making it impractical. Therefore, although FRP umbrellas have been developed for more than 20 years, they have not been introduced to the market for a long time.

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