Elliptical Net Frame Segments and Tensioning Mechanism
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Solution Overview
Problem
Portable net structures tend to sag due to insufficient frame rigidity and experience misalignment issues during assembly, leading to cumbersome setup and potential instability during play.
Innovation Solution
A portable net support system featuring inter-connectable tubular segments, elliptical spacers, and a center support member for adjusting the net's height, which includes a tensioning mechanism to prevent sagging and ensure proper alignment, using a combination of metal channel or rigid plastic tubing with a shock cord for stability and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional portable net structures are used, then the net can be easily transported, but the frame lacks rigidity causing the net to sag
Solution Approach 1:
The frame is divided into multiple tubular segments that can be connected together. The upright posts are segmented into adjustable sections, and the crossbar is segmented into connectable portions. This segmentation allows the frame to maintain rigidity when assembled while being easily disassembled and transported in smaller pieces.
Solution Approach 2:
The tubular segments are designed to nest within each other when disassembled, with smaller diameter sections fitting inside larger diameter sections. This nesting arrangement minimizes storage space and facilitates easy transport while maintaining structural integrity when assembled.
2Reliability
If conventional connecting assembly members are used, then the structure can be assembled, but the members tend to misalign and twist over time
Solution Approach 1:
The connecting members feature asymmetric geometries with male and female connection ends that have complementary shapes. This asymmetry ensures proper orientation during assembly and prevents misalignment or twisting during use, as each connection point can only be assembled in the correct orientation.
Solution Approach 2:
Connection elements serve as intermediaries between tubular segments, featuring designs that guide alignment during assembly. These intermediaries include oriented connection points and alignment features that ensure proper positioning while simplifying the assembly process through intuitive connection mechanisms.
3Stability of the object's composition
If conventional net support structures are used, then the net can be supported, but the upright posts shift during play
Solution Approach 1:
The base structures incorporate pre-designed features such as weighted bases or ground-engaging elements that are prepared in advance to prevent post shifting. The bases are designed with inherent stability features that are activated upon assembly, preventing post movement during play without requiring additional complex stabilization mechanisms.
4Adaptability or versatility
If conventional crossbar structures are used, then the net can be supported horizontally, but the structure lacks adjustability for different game requirements
Solution Approach 1:
The crossbar structure incorporates adjustable elements that allow dynamic reconfiguration for different game requirements. The upright posts feature adjustable height sections, and the crossbar can be positioned at different heights along the posts, enabling adaptation to various net and wall game specifications while maintaining structural integrity.
Data Source
AI summary
An easily assembled and disassembled frame for a net game includes a rigid multi-part frame with a cross-member that is non-sagging. Sections of the multi-part frame have an elliptical profile. A net stabilizer includes a tensioning member coupled at one end to a retention member of the frame, and having the other end of the tensioning member inserted into a center sleeve of the net, and, a center sleeve with a securing member for fastening securely at one end to the cross-member.