Adjustable Rotation Base for Outdoor Umbrellas
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Solution Overview
Problem
Conventional outdoor umbrellas are difficult to move due to their heavy weight, especially when stabilized with water or sand, and the addition of wheels can cause unintended movement, making them inconvenient to transport and stabilize.
Innovation Solution
An adjustable rotation base with a transportation arrangement that allows the umbrella to switch between a stationary mode and a transportation mode by lifting wheels to the ground for easy movement, using a mechanism of driving units and manual actuation to control the position of the wheels or stationary units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wheels are installed on the outdoor umbrella base, then the umbrella becomes movable and easier to transport, but the wheels may cause accidental yet undesirable movement when the user wishes the outdoor umbrella to be stationary
Solution Approach 1:
The patent applies the dynamics principle by making the wheel support structure adjustable between two states: engaged and disengaged. When engaged, the wheels contact the ground to enable movement; when disengaged, the wheels are lifted off the ground to prevent unintended movement while maintaining stability. This dynamic adjustment allows the base to adapt its mobility characteristics based on operational needs.
Solution Approach 2:
The base is segmented into distinct functional components: a stationary support unit and a movable wheel assembly. The wheel assembly includes wheels rotatably supported on a wheel support structure that can be independently adjusted relative to the base housing. This segmentation allows the stationary unit to provide stability while the wheel assembly provides mobility when needed.
2Stability of the object's composition
If the supporting base is disposed with water or sand to prevent accidental toppling, then the outdoor umbrella becomes stable when stationary, but the outdoor umbrella becomes very heavy and difficult to move
Solution Approach 1:
The patent resolves this contradiction by dynamically adjusting the wheel support structure. When transportation is needed, the wheel support is lowered to engage wheels with the ground, enabling movement even with the heavy base filled with water or sand. When stability is needed, the wheel support is raised to disengage wheels, and the base rests on its stationary support unit, preventing accidental movement.
3Stability of the object's composition
If the outdoor umbrella is designed to be stationary for prolonged use, then stability is achieved, but mobility and ease of relocation are lost
Solution Approach 1:
The patent implements a dynamic wheel support structure that can be adjusted between engaged and disengaged positions. During prolonged stationary use, the wheel support is raised to disengage the wheels, ensuring stability. When relocation is needed, the wheel support is lowered to engage the wheels with the ground, enabling easy movement of the heavy base.
Solution Approach 2:
The base is divided into a stationary support unit for stable operation and a separate wheel assembly for mobility. The wheel assembly includes wheels on a movable support structure that can be independently positioned, allowing the base to function as either a stationary or mobile platform based on operational requirements.
Data Source
AI summary
An adjustable rotation base includes a base housing and a transportation arrangement. The base housing has a bottom side, an upper side for coupling with the supporting post to support the outer umbrella in an upright manner, and a receiving cavity indently formed on the bottom side of the base housing, wherein the base housing includes a stationary unit provided at the bottom side for sitting on the ground surface in a stationary manner, and a plurality of transferring wheels rotatably supported at the bottom side of the base housing. The transportation arrangement is provided at the base housing to operate the base housing between an idle mode and a transportation mode in which the stationary unit is upwardly lifted to allow the transferring wheels being sitting on the ground surface, such that the base housing is adapted to be transported on the ground surface via the transferring wheels.