Movable Sunshade Base Leverage Mechanism
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Solution Overview
Problem
Existing movable sunshade bases are difficult to move and lack stability, with complex and costly designs that often result in instability, especially in windy conditions, due to their reliance on universal wheels and brake assemblies.
Innovation Solution
A movable sunshade base design featuring a base frame, roller component, rotary assembly, transmission component, drive rods, and a pull rod, which allows for controlled movement and retraction of rollers using a leverage mechanism, enhancing stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a heavy base with more than a hundred kilograms is used, then the sunshade base is stable, but it becomes difficult to move
Solution Approach 1:
The base is divided into a stationary base frame and movable roller components. The roller components can be independently moved along the base frame, allowing the heavy base to be repositioned by moving only the lighter roller components rather than the entire base structure.
Solution Approach 2:
Roller components serve as intermediaries between the heavy base frame and the ground. These rollers reduce friction and enable easy movement of the heavy base by rolling instead of sliding, while the base frame itself remains stable when stationary.
2Ease of operation
If universal wheels with brake assembly are used, then the base can be moved, but the cost increases and stability deteriorates due to brake failure
Solution Approach 1:
The brake assembly is completely removed from the design. Instead of using wheels with integrated brakes, the invention uses roller components that rely on gravity and friction against the ground for stability, eliminating the reliability issues associated with brake failure.
Solution Approach 2:
The roller components use simple, inexpensive structures without complex braking mechanisms. The rollers are designed to be basic rolling elements that achieve movement functionality through simple mechanical means rather than expensive, complex brake assemblies.
3Ease of operation
If wheels directly contact with the ground, then the base can move, but the footprint area is small and stability is poor
Solution Approach 1:
The base system is segmented into the main base frame that provides stability and roller components that provide mobility. The roller components have larger contact areas with the ground compared to traditional wheels, improving stability while maintaining mobility.
Solution Approach 2:
The roller components can be positioned at different locations along the base frame, providing both movement capability and distribution of weight across a larger footprint area, thereby improving stability without sacrificing mobility.
4Ease of operation
If pushing force is used to move the base, then the base can be moved, but the direction control is difficult and operation becomes complex
Solution Approach 1:
The roller components act as intermediaries that convert pushing forces into controlled movement. By positioning rollers at specific locations on the base frame, the direction of movement can be controlled more easily compared to pushing the entire heavy base directly.
Solution Approach 2:
The roller components can be dynamically positioned and adjusted along the base frame to achieve desired movement directions. This dynamic adjustment capability simplifies direction control compared to fixed wheel configurations.
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 provides a simple, practical, and low-cost solution for moving sunshade bases, ensuring stability and easy operation, suitable for various sunshade types, by using a leveraged mechanism to control roller movement and retraction.
Implementation Method 1
the guiding wheel frame is connected with the rotating seat up and down by the steel ball
Implementation Method 2
a shaft of the guiding wheel frame is provided with a thread and is fixed to the rotating seat by a nut
Implementation Method 3
The second roller is locked on the guiding wheel frame by a pinned outer screw and a pinned inner screw
Data Source
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AI summary
The present disclosure relates to a movable sunshade base. The base comprises a base frame, a base cover, a roller component, a rotary assembly, a transmission component, a first drive rod, a second drive rod and a pull rod. Through swinging a pull rod, the second drive rod drives the transmission shaft, thereby driving the first drive rod. Driven by the first drive rod, a wheel bracket achieves power transmission using the leverage theorem, thereby controlling the roller to move to the outside of the base frame. When the movement is completed, the pull rod is swung to the opposite direction so that the roller can shrink into the base frame. The disclosure has the advantages of simple operation, convenient appearance, strong practicability and low cost, and can effectively solve the problem of moving difficulty and can be applied to various types of sunshade base.