Umbrella Frame with Dual Arms for Taut Canopy Stability
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Solution Overview
Problem
Traditional umbrella and parasol frames are flimsy, causing the hub and spoke frame to be easily turned inside out in the wind, and the valances tend to flap, creating noise and obscuring branding.
Innovation Solution
A sturdy umbrella or parasol frame design with a solid framework that keeps the fabric cover taut, featuring a center pole with top and bottom hubs, sets of spokes, and risers that connect the spokes, preventing valance flapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional flimsy hub-and-spoke frame is used, then the umbrella can collapse properly, but the frame is easily turned inside out in the wind
Solution Approach 1:
The frame is divided into multiple sets of spokes (first set at top hub, second set at bottom hub) connected by risers, creating a segmented structure that provides both stability and collapse capability. Each segment can function independently to maintain shape while allowing controlled collapse.
Solution Approach 2:
The invention adds a vertical dimension by introducing risers that connect the top and bottom hubs, creating a three-dimensional framework. This vertical reinforcement dimension prevents the frame from being turned inside out while maintaining the traditional collapse function through the hub-and-spoke geometry.
2Stability of the object's composition
If valances are made slack to allow proper collapse, then the umbrella can fold traditionally, but the valances flap in the wind creating noise and obscuring branding
Solution Approach 1:
The valances are pre-positioned and secured to the framework in a way that maintains them in a tight, non-flapping configuration during use. The preliminary attachment method ensures that when the umbrella is opened, the valances automatically assume the correct position and remain stable, preventing wind-induced flapping before it can occur.
Solution Approach 2:
The framework acts as an intermediary structure that transfers and distributes wind forces away from the valances. The rigid risers and multiple spoke sets create a mediating structure between the wind and the valances, preventing direct wind impact on the valances and thus eliminating flapping and noise.
3Shape
If the fabric cover is stretched taut over the frame, then the canopy looks solid and branding is visible, but the frame must be sufficiently sturdy to maintain the taut configuration
Solution Approach 1:
The framework combines different material properties to achieve both strength and flexibility. The risers and spoke connections use materials or construction methods that provide rigid support for the taut fabric canopy while maintaining the ability to collapse when needed. This composite approach allows the frame to be strong enough to hold the fabric taut during use.
Data Source
AI summary
Disclosed is an umbrella with dual arms to tighten a fabric or sheet material cover for a clean look and ability to brand. With the dual arms, or spokes, the framework can be created that is solid while operating in the manner of a traditional umbrella.