Outdoor Umbrella Base With Retractable Wheels for Stability
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Solution Overview
Problem
Outdoor umbrellas with universal wheels at the base are unstable and prone to sliding due to their size and weight, making them difficult to carry and maneuver.
Innovation Solution
A manually adjustable movable base with a threaded rod, cranking rod, pull rods, and bottom wheels forms an X-shaped structure, allowing for telescoping of the wheels via a chain mechanism and a lifting block, enabling stable positioning and easy movement by adjusting the wheel position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If universal wheels are added to the base of the outdoor umbrella, then the mobility of the base is improved, but the stability of the base deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the wheel support structure adjustable between extended and retracted positions. The pull rods can be rotated to change the position of the bottom wheels relative to the base assembly. When the pull rods are in the first position, the bottom wheels are extended outward to improve mobility. When the pull rods are in the second position, the bottom wheels are retracted to improve stability. This dynamic adjustment allows the base to adapt its configuration based on whether movement or stability is the primary requirement.
2Ease of operation
If the bottom wheels are extended outward, then the ease of movement is improved, but the stability of the base deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the wheel support structure adjustable between extended and retracted positions. The pull rods can be rotated to change the position of the bottom wheels relative to the base assembly. When the pull rods are in the first position, the bottom wheels are extended outward to improve mobility. When the pull rods are in the second position, the bottom wheels are retracted to improve stability. This dynamic adjustment allows the base to adapt its configuration based on whether movement or stability is the primary requirement.
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 solution provides a stable and easy-to-manage outdoor umbrella base that remains stable when stationary and can be easily moved by adjusting the wheel position, addressing the instability and mobility issues of prior designs.
Implementation Method 1
A lower end of the threaded rod is in threaded connection with a lifting block
Implementation Method 2
The cranking rod is in transmission fit with the threaded rod by means of a chain mechanism
Implementation Method 3
a plurality of pull rods rotatably fitted with the base assembly, and a plurality of bottom wheels arranged on the base assembly and in corresponding fit with the pull rods
Data Source
AI summary
A manually adjustable movable base for an outdoor umbrella includes a base assembly, a screw rod rotatably fitted at the center of the foundation base assembly, a cranking rod which is in transmission fit with the screw rod and is used for driving the screw rod to rotate, a plurality of pull rods rotatably fitted with the base assembly, and a plurality of bottom wheels which are arranged on the base assembly and are correspondingly fitted with the pull rods. The lower end of the screw rod is in threaded connection with a lifting block, and the lifting block is fitted with and connected to the pull rods.