Trampoline Support Rack Ridge Stress Distribution
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Solution Overview
Problem
Conventional trampolines with circular tube frames face deformation and safety issues due to uneven stress distribution on tubular junctions, leading to reduced durability and potential safety concerns.
Innovation Solution
A trampoline design featuring a circular support rack with ridge structures and bent tubes, where the first and second support tubes have coupling ends with ridges and grooves to distribute stress evenly and enhance physical strength, and the use of connection rings and auxiliary support sections to improve durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a circular tube frame is used for the trampoline, then the cost is lower and assembly is easier, but the junctions deform due to unidirectional spring stress and the structure lacks durability
Solution Approach 1:
The patent applies local quality by designing the coupling end of the support tube with a specific ridge structure that concentrates reinforcement exactly where the spring force acts (at the coupling location). This localized reinforcement structure increases strength and durability at the critical stress point without requiring the entire frame to be more complex or expensive to manufacture.
2Reliability
If the frame junctions are reinforced to withstand spring stress, then the durability improves, but the manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The support tube is segmented into distinct functional sections: a coupling end with ridge structure for stress distribution, a bent tube section for geometric flexibility, and a support section for structural integrity. This segmentation allows each part to be optimized independently and assembled together, improving durability without proportionally increasing overall complexity.
Solution Approach 2:
The bent tube section introduces curvature to the otherwise linear support tube structure. This curved geometry allows the frame to better absorb and distribute stresses through geometric flexibility, improving durability while maintaining a relatively simple single-piece construction that doesn't require complex assembly.
3Ease of manufacture
If the support tube has a simple linear structure, then manufacturing is simpler, but it cannot effectively distribute the unidirectional spring force and junctions deform
Solution Approach 1:
The coupling end of the support tube features a localized ridge structure that creates asymmetric geometry specifically at the stress concentration point. This local structural variation enables effective distribution of the unidirectional spring force while keeping the rest of the tube simple and easy to manufacture.
Solution Approach 2:
The bent tube section introduces a curved geometry that allows the support tube to better accommodate and distribute forces. The curvature provides geometric flexibility that helps distribute the unidirectional spring stress more effectively throughout the frame structure while maintaining manufacturing simplicity.
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 ridge and groove structures effectively disperse stress, increasing the physical strength and durability of the circular support rack, reducing deformation and enhancing user safety by distributing forces more evenly across the frame.
Implementation Method 1
a plurality of spring members (22) located on the circumference of the pad (21)
Data Source
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AI summary
A trampoline includes a rebounding portion and a circular support rack. The rebounding portion includes a pad and a plurality of elastic members located on the circumference of the pad. The circular support rack is located around the rebounding portion and connected to the elastic members, and includes an inner ring side facing the rebounding portion, and an outer ring side opposite to the inner ring side, and also includes at least one first support tube and one second support tube. The first support tube and second support tube have respectively a bent tube section, a first coupling end and a second coupling end corresponding to the first coupling end. The first coupling end includes a first support section located on the inner ring side, a second support section located on the outer ring side and at least one first ridge between the first and second support sections.