Inflatable Toroidal Bladder for Umbrella Stability
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Solution Overview
Problem
Conventional umbrellas lack the ability to dynamically adjust their rigidity and stability in response to varying environmental conditions, such as wind and rain, which can lead to instability and reduced effectiveness in providing protection.
Innovation Solution
The design incorporates a toroidal air bladder that is inflatable and connected to a pump, allowing the umbrella to switch between stowed and deployed configurations, with a stabilizer that limits the range of motion of the support ribs and a valve system for controlled air release, enabling adjustable rigidity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the umbrella uses a fixed rigid structure, then it provides stable protection against elements, but it cannot dynamically adjust to varying wind conditions and becomes difficult to stow
Solution Approach 1:
The patent applies dynamics by replacing the fixed rigid structure with an inflatable air bladder system that can dynamically change its rigidity and shape. The air bladder is inflated to provide structural support and stability when needed, and can be deflated to reduce resistance to wind and facilitate stowing. This dynamic adjustment capability allows the umbrella to adapt to varying environmental conditions while maintaining stability when deployed.
Solution Approach 2:
The patent utilizes parameter changes by varying the internal air pressure within the bladder to control the rigidity and shape of the umbrella structure. By adjusting the amount of air in the bladder, the umbrella can transition between a rigid deployed state for protection and a flexible stowed state for portability, directly addressing the contradiction between stability and adaptability.
2Adaptability or versatility
If the umbrella uses a flexible collapsible structure, then it is easy to stow and transport, but it lacks the rigidity and stability needed to provide effective protection against elements
Solution Approach 1:
The inflatable air bladder provides a dynamic solution that transitions from a flexible collapsed state during transport to a rigid deployed state during use. The bladder's ability to be inflated and deflated allows the umbrella to switch between portability and structural strength as needed, resolving the contradiction between ease of stowing and protective capability.
3Strength
If the umbrella uses conventional rigid support ribs, then it maintains structural integrity, but it cannot reduce resistance to wind forces and becomes unstable in high wind conditions
Solution Approach 1:
The inflatable air bladder replaces conventional rigid support ribs with a dynamic structure that can adjust its rigidity. When inflated, the bladder provides structural integrity to maintain the umbrella shape. When wind conditions become severe, the bladder can be deflated to reduce the surface area and resistance to wind forces, preventing damage and instability.
Solution Approach 2:
The patent changes the physical state of the support structure from rigid to flexible by controlling the inflation pressure of the air bladder. This parameter change allows the umbrella to present a rigid profile for structural integrity during normal use, and a flexible profile to minimize wind resistance during high wind conditions.
4Adaptability or versatility
If the umbrella uses an inflatable structure, then it can dynamically adjust rigidity, but it adds complexity to the deployment and stowing mechanisms
Solution Approach 1:
The patent employs pneumatic principles by using an inflatable air bladder as the core structural element. The bladder can be inflated through a pump or CO2 cartridge and deflated through a valve, providing dynamic rigidity adjustment without complex mechanical moving parts. This pneumatic approach simplifies the deployment mechanism compared to traditional rigid umbrellas while achieving the desired 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
This solution allows for a portable and resilient umbrella that can be easily deployed and stowed, providing effective protection against elements by varying its rigidity and stability based on user needs, enhancing usability and durability.
Implementation Method 1
The toroidal air bladder is coupled to the air pump, and the air bladder disposed about the handle and engages the support ribs
Implementation Method 2
the stabilizer limits the support ribs to a pre-defined angular range with respect to the handle
Implementation Method 3
the collar does not obstruct the channel, thereby allowing the air within the toroidal air bladder to flow through the channel and escape from the umbrella
Data Source
AI summary
Some umbrellas include a support assembly, canopy assembly, and a toroidal air bladder. The support assembly includes a pump and a handle. The canopy assembly includes a plurality of support ribs attached to the handle, and a sheet attached to each of the support ribs. The toroidal air bladder is coupled to the air pump, and the air bladder disposed about the handle and engages the support ribs.