Sporting Pole Composite Structure for Weight and Stress Optimization
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Solution Overview
Problem
Existing composite poles for sporting activities, such as skiing and trekking, face challenges in construction complexity, uniform resistance distribution, and increased weight due to their coaxial tubular structure, which limits reinforcement in high-stress areas and requires specialized production processes.
Innovation Solution
A tubular body with a composite structure featuring a closed-profile tubular element and an open-profile shaped element, where the shaped element is inserted and permanently coupled through elastic recovery, allowing for varying resistance across the cross-section and reduced weight, using materials like aluminum or carbon, with a filling structure made of non-rigid plastic for enhanced strength and simplified production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a coaxial tubular structure with outer and inner tubular elements is used, then resistance to stress is improved, but construction complexity increases due to precise processing requirements
Solution Approach 1:
The tubular body is divided into an outer tubular element and an inner shaped element with open profile. The inner element is inserted into the outer element and permanently coupled through elastic recovery, creating a segmented composite structure that achieves reinforcement without requiring complex coaxial processing of multiple tubular elements.
Solution Approach 2:
The inner shaped element provides localized reinforcement in specific areas of the tubular body where stress concentration occurs. This allows the structure to have varying resistance characteristics across different cross-sectional areas, reinforcing high-stress regions without uniformly increasing the entire pole's weight or complexity.
2Strength
If uniform resistance is provided across the entire cross section, then structural integrity is maintained, but weight cannot be reduced by removing material from low-stress areas
Solution Approach 1:
The composite structure enables different regions of the tubular body to have different resistance characteristics. The inner shaped element is positioned to provide enhanced resistance in high-stress areas while allowing lighter construction in low-stress areas, achieving weight reduction without compromising overall structural integrity.
3Strength
If specialized production processes are used to create composite tubular structures, then resistance characteristics are improved, but production line complexity increases
Solution Approach 1:
The tubular body is constructed from separate outer and inner elements that can be manufactured independently using standard production processes. The inner shaped element is inserted into the outer element and permanently coupled through elastic recovery, eliminating the need for specialized coaxial processing equipment and simplifying the production line.
4Weight of moving object
If the tubular body is made lighter, then weight is reduced, but resistance to stress may be compromised
Solution Approach 1:
The composite structure allows the pole to have varying density and resistance characteristics across different cross-sectional areas. Material is concentrated in the inner shaped element where stress concentration occurs, providing enhanced resistance where needed while maintaining lighter overall weight by avoiding unnecessary material in low-stress regions.
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 simplifies construction, reduces weight, and allows for targeted reinforcement in high-stress areas while maintaining resistance, all without requiring significant modifications to standard production lines, resulting in a lighter and more efficient composite pole.
Implementation Method 1
the shaped element is inserted and permanently coupled through elastic recovery
Data Source
AI summary
The invention is a pole (1) for sporting activities of the type comprising a tubular body (2) provided at one end (2a) with a tip (3) and at the opposite end (2b) with a handgrip (4), wherein the tubular body (2) comprises a tubular element (5) developing mainly in longitudinal direction and having a closed profile in cross section, and at least one shaped element (6; 10) developing mainly in longitudinal direction fitted inside the tubular element (5) and having an open profile in cross section. Between the outer surface (6a; 10a) of the shaped element (6; 10) and the inner surface (5a) of the tubular element (5) opposing each other there is a filling structure (7; 13).