Umbrella Tray Lifting Mechanism for Folding Clearance
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Solution Overview
Problem
Conventional shade umbrellas face issues with folding, as the umbrella surface is large, causing the umbrella bone to touch tables or items when folded, and the shading effect is compromised due to the fixed height of the upper umbrella tray.
Innovation Solution
A shade umbrella design featuring a cooperative umbrella surface and pole assembly with hinged connections, a telescopic rod system, a traction device, and an elastic element, allowing the upper umbrella tray to move upward during folding, thus lifting the entire assembly without increasing the umbrella edge height, preventing contact with tables and maintaining effective shading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the umbrella surface is made large to provide adequate shading area, then the shading area is improved, but the umbrella bone touches tables or items when folded
Solution Approach 1:
The upper umbrella tray is made movable relative to the lower umbrella tray through a lifting mechanism. When folding, the upper tray lifts upward dynamically, raising the umbrella bone clearance height to prevent contact with tables or items, while maintaining the large shading area when open
2Length of stationary object
If the upper umbrella tray height is increased to raise the umbrella bone clearance height, then the umbrella bone clearance height is improved, but the shading effect is compromised
Solution Approach 1:
The upper umbrella tray height is made dynamically adjustable. When open, the tray maintains its normal position to ensure optimal shading effect. When folding, the tray lifts upward to increase the umbrella bone clearance height, preventing contact with tables or items
Solution Approach 2:
The height parameter of the upper umbrella tray is changed dynamically based on the operational state. The lifting mechanism alters the tray's vertical position to provide different clearance heights for opening/folding operations versus normal shading operations
3Ease of operation
If the upper umbrella tray is moved upward to fold the cross rod, then the folding function is achieved, but the umbrella bone touches tables or items
Solution Approach 1:
The upper umbrella tray is equipped with a lifting mechanism that enables dynamic upward movement during folding. This dynamic adjustment raises the umbrella bone clearance height sufficiently to prevent contact with tables or items while maintaining ease of folding operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enables the umbrella to fold without touching tables or items, while maintaining an optimal shading height, by utilizing a telescopic rod system and elastic element to lift the upper tray, ensuring a compact and functional folding mechanism.
Implementation Method 1
an elastic element, wherein a lower end of the elastic element is cooperatively connected to the outer pole, and an upper end of the elastic element is cooperatively connected to the inner telescopic rod
Implementation Method 2
The traction device comprises a self-lock rope winder disposed on the outer pole
Implementation Method 3
an umbrella rope and a first pulley disposed on the upper end of the inner telescopic rod. The umbrella rope has one end wound on the self-lock rope winder, and the other end bypassing the first pulley to be cooperatively connected to the lower umbrella tray
Data Source
AI summary
An umbrella for facilitating folding of umbrella surface includes an umbrella surface assembly and a pole assembly that are cooperatively connected to each other. The umbrella surface assembly includes a middle stick, an upper umbrella tray, a lower umbrella tray, a set of first cross rods and a set of second cross rods. The upper umbrella tray is hingedly connected to a first diagonal draw bar, a middle portion of the first diagonal draw bar is hingedly connected to a second diagonal draw bar, and a lower end of the first diagonal draw bar is hingedly connected to a sliding portion. The pole assembly includes an outer pole, an inner telescopic rod slidably connected to the outer pole, a traction device and an elastic element.