Thermally Bonded Valve Assembly for Expandable Bladder
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Solution Overview
Problem
Conventional fluid valve assemblies lack durability and strength, especially at the interface with expandable bodies made from thermoplastic rubber materials, leading to ineffective fluid inflation and retention in inflatable structures.
Innovation Solution
A thermally bonded fluid valve assembly with a slot valve design and integrally formed lip-and-inlet contours, providing enhanced strength and durability through radial flange attachment to the expandable body, ensuring secure closure and reliable sealing during expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional fluid valve assembly is used with an expandable body, then the valve can be attached to the body, but the interface between the valve and the body lacks strength and durability during expansion
Solution Approach 1:
The valve assembly incorporates a reinforcement structure specifically at the interface region where the valve meets the expandable body. This reinforcement ring or collar is positioned locally at the vulnerable interface zone to provide enhanced strength and durability precisely where expansion forces are most concentrated, without adding unnecessary weight or complexity to the entire valve assembly.
Solution Approach 2:
The valve assembly utilizes composite construction combining different materials with complementary properties - a flexible valve body material for sealing and adaptation, combined with a harder reinforcement material at the interface to resist expansion forces. This composite approach allows each material to perform its optimal function while working together to solve the strength-durability contradiction.
2Stability of the object's composition
If a conventional valve design is used, then the structure is simple, but the stress distribution during expansion is poor leading to interface failure
Solution Approach 1:
Rather than redesigning the entire valve structure, the reinforcement is applied locally at the critical interface region. This targeted approach improves stress distribution where it is most needed while maintaining the simplicity of the overall valve design and minimizing added complexity.
Solution Approach 2:
The reinforcement structure is pre-integrated into the valve assembly during manufacturing, so that when the valve is installed on the expandable body, the stress distribution improvement is already in place. This preliminary preparation ensures proper stress distribution from the first use without requiring additional steps or complex assembly procedures.
3Reliability
If the valve interface is not reinforced, then the valve assembly is simple to manufacture, but the sealing capability and retention of fluid during expansion is poor
Solution Approach 1:
The sealing enhancement is achieved through a localized reinforcement ring or collar at the valve-body interface rather than requiring complex sealing mechanisms throughout the entire valve. This local reinforcement improves sealing capability by providing structural support where the seal is most vulnerable during expansion, while keeping the manufacturing process relatively simple.
Solution Approach 2:
The reinforcement structure is incorporated into the valve assembly during the initial manufacturing process, so that the improved sealing capability is built-in from the start. This preliminary integration of the reinforcement feature allows for efficient manufacturing without requiring additional assembly steps or complex production procedures.
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 significantly increases the strength and durability of the fluid valve assembly interface, allowing for efficient and secure fluid inflation and retention in expandable bodies, with improved stress distribution and sealing capabilities.
Implementation Method 1
Valve assembly for expandable bladder and method of manufacturing the same... thermally bonded thereto... significantly increased strength and durability during expansion... through thermal sealing
Data Source
AI summary
The present invention relates to expandable bodies or systems with bounding walls or bladder structures and at least one valve assembly thermally bonded thereto. More particularly, the present invention provides a fluid valve assembly for expandable fluid-containing bodies typically made from a thermoplastic rubber material or the like, which will exhibit significantly increased strength and durability during expansion and while expanded, especially at and around the interface between the fluid valve assembly and the bounding wall of the expandable body because of the enhanced strength of the fluid valve assembly interface through thermal sealing.