Trampoline Rope Hook Structure for Symmetrical Cord Ring Loading

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Solution Overview

Problem

Existing fastening systems for trampolines, particularly those using elastic rope rings, suffer from asymmetrical stress due to uneven elastic properties along the rope ring, leading to premature wear and adverse vibration behavior during use.

Innovation Solution

A rope hook design with a fixing device that centers and secures the connection points within receiving spaces, preventing lateral displacement and ensuring symmetrical loading of the rope ring, thereby maintaining consistent elastic properties across all tension sections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the connection point of the rope ring is located in one of the pull sections, then the rope ring can be easily assembled, but the elastic properties become asymmetrical leading to premature wear and poor vibration behavior

Engineering Contradiction:
Improveassembly easeVSAvoidservice life and vibration behavior
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The receiving space is divided into distinct zones: a first region that receives the rope ring end sections and a second region that receives the connection point. This segmentation allows the connection point to be positioned separately from the pull sections, preventing asymmetrical stress while maintaining assembly simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention introduces a spatial dimension solution by creating a receiving space with differentiated regions along the rope ring's path. The connection point is accommodated in a second region that is spatially distinct from the first region where the rope ring ends are received, effectively moving the connection point out of the asymmetric stress zone of the pull sections.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If the rope ring has different elastic properties in different sections, then assembly is simplified, but asymmetrical stress occurs causing premature wear

Engineering Contradiction:
Improveassembly simplicityVSAvoidwear resistance
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The receiving space is designed with different local qualities: the first region is configured to receive and support the rope ring end sections, while the second region is specifically designed to receive and accommodate the connection point. This local differentiation ensures that the connection point does not experience the asymmetric stresses present in the pull sections, thereby preventing premature wear while maintaining assembly simplicity.

Inventive Principle:
Principle #3Local quality

3Adaptability or versatility

If the connection point is not fixed against lateral displacement, then the rope ring has freedom of movement, but asymmetrical loading occurs affecting vibration behavior

Engineering Contradiction:
Improvemovement freedomVSAvoidvibration behavior
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The receiving space is segmented into functional regions that provide both guidance and fixation. The first region receives the rope ring ends allowing some movement freedom, while the second region specifically receives the connection point and provides lateral displacement prevention through the structured configuration of the receiving space, ensuring symmetrical loading and optimal vibration behavior.

Inventive Principle:
Principle #1Segmentation

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 enhances the service life of the rope ring and improves the vibration behavior of the trampoline by distributing stress evenly, reducing wear and maintaining optimal performance.

Implementation Method 1

The fastening system for attaching or clamping a swing mat to the frame of a trampoline is crucial for the durability and in particular the vibration behavior of the trampoline during use

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3452182B1Cable hook for a cable loop of a trampoline jumping sheet
Publication Date: 2021.09.22 ANGEHRN AG UMFORMTECHN
  • EP3452182B1 patent drawingFigure 1~3
  • EP3452182B1 patent drawingFigure 4~5
  • EP3452182B1 patent drawingFigure 6~8

AI summary

The invention relates to a cord hook (10) for a cord ring (7) of a trampoline covering, said ring having at least one connection point (76; 77), wherein the cord hook (10) comprises a distal receiving section (11) and a proximal securing section (12) for securing to a jump mat (6), the receiving section (11) and the securing section (12) being connected by a transition section (13), and at least one receiving space (110; 1101,1102) being formed for mounting a first end (71) and a second end (72) of the cord ring (7). The cord hook (10) also comprises a fastening device (2).