Cantilever Umbrella Linkage for Low-Resistance Angle Adjustment
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Solution Overview
Problem
Existing hanging umbrella structures face significant resistance and inefficiency in adjusting the angle of the umbrella surface due to their triangular structure, which requires a separate handle for the hand crank and lacks a smooth, labor-saving mechanism for angle adjustment.
Innovation Solution
A deformable quadrilateral structure is formed by a vertical rod, first and second connecting rods, and a horizontal arm rod, equipped with a locking mechanism and gear systems to facilitate smooth and labor-saving angle adjustment, eliminating the need for a sliding sleeve and enhancing freedom of movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a triangular structure is used for angle adjustment, then the structure is simple, but the resistance is large and adjustment is difficult
Solution Approach 1:
The patent transforms the static triangular structure into a dynamic quadrilateral structure with movable connecting rods. The fourth side is made movable, allowing the structure to deform and adjust angles smoothly with reduced resistance, while the locking mechanism provides stability when needed.
2Device complexity
If a sliding sleeve is used for angle adjustment, then the structure is compact, but the adjustment process requires large force at certain positions
Solution Approach 1:
The patent replaces the sliding sleeve mechanism with a dynamic quadrilateral linkage system. The connecting rods and hinges create a mechanical advantage that distributes adjustment force more evenly throughout the range of motion, eliminating positions where excessively large force is required.
3Adaptability or versatility
If the angle between horizontal arm and connecting rod changes greatly, then the adjustment range is large, but the resistance varies significantly
Solution Approach 1:
The patent uses a quadrilateral linkage system where the fourth side is movable, creating a more balanced mechanical advantage distribution. This dynamic structure maintains relatively consistent resistance throughout the adjustment range, making operation smoother while preserving adaptability.
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 deformable quadrilateral structure allows for more efficient and effortless adjustment of the umbrella angle, reducing resistance and improving the overall operation with increased freedom compared to traditional triangular structures.
Implementation Method 1
a transmission gear meshed with the first gear plate is arranged in the horizontal arm rod
Implementation Method 2
When the locking teeth of the locking rod are engaged with the transmission gear, locking is realized
Implementation Method 3
a transmission gear meshed with the first gear plate is arranged in the horizontal arm rod, and a locking tooth matching the transmission gear is arranged at an end of the locking rod
Data Source
AI summary
The present application provides a hanging umbrella structure including a vertical rod, a horizontal arm rod, an umbrella cover skeleton, wherein the umbrella cover skeleton is arranged on the horizontal arm rod, a first connecting rod, a second connecting rod, wherein one end of the first connecting rod and the second connecting rod are correspondingly hinged to two different points on the vertical rod, and the other ends of the first connecting rod and the second connecting rod are correspondingly hinged to two different points on the horizontal arm rod. The vertical rod, the first connecting rod, the second connecting rod and the horizontal arm rod form a deformable quadrilateral structure to adjust an included angle between the horizontal arm rod and the vertical rod, and the quadrilateral structure is provided with a locking mechanism for fixing the included angle between the horizontal arm rod and the vertical rod.