Elastic Exercise Cord Safety Assembly with Internal Core
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Solution Overview
Problem
Existing exercise equipment with elastic safety cords lacks efficient and economical solutions to prevent injury and damage when the cords break, as they often fail to secure the ends properly, leading to potential harm and property damage.
Innovation Solution
An elastic exercise safety cord assembly featuring end plugs with a hollow core and a cord with end knots, which are secured within inserts and docking blocks, ensuring the cord remains attached and confined even if the tubing breaks, preventing damage and injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If elastic tubing is used for exercise cords, then stretching capability and resistance training effectiveness are improved, but safety and injury prevention deteriorate when the tubing breaks
Solution Approach 1:
The elastic tubing is segmented into multiple sections by inserting a rigid or semi-rigid core material (such as steel cable, rope, or webbing) through the tubing. This segmentation maintains the elastic properties of the tubing while preventing complete failure and uncontrolled snapping if the tubing breaks, as the core provides structural integrity
Solution Approach 2:
An intermediary component (the core material) is introduced between the user and the elastic tubing. This intermediary absorbs and distributes the force when the tubing fails, preventing direct contact with snapping tubing and reducing injury risk while maintaining exercise effectiveness
2Ease of manufacture
If elastic tubing is secured with simple attachments, then ease of installation and interchangeability are improved, but reliability and safety deteriorate when the tubing breaks
Solution Approach 1:
The core material is pre-inserted through the elastic tubing during manufacturing, creating a pre-assembled safety cord assembly. This preliminary action ensures that the safety mechanism is already in place before installation, maintaining ease of installation while guaranteeing reliability through the integrated core structure
Solution Approach 2:
The elastic tubing and core material are merged into a single integrated assembly where the core runs continuously through the tubing. This merging ensures that both components work together as a unified safety system, maintaining simplicity of installation while improving reliability through their combined structural integrity
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 effectively limits the stretching length of the elastic tubing, preventing bodily injury and property damage when the tubing breaks, while allowing for various tensions, lengths, and applications, making it durable, reliable, and economical to implement.
Implementation Method 1
an elastic tubing (20) having an exterior wall (22), and opposing first and second ends (24, 26). The elastic tubing stretches a first predetermined length.
Data Source
AI summary
An elastic exercise safety cord assembly, having an elastic tubing with first and second ends, an exterior wall, and an elongated cavity having a first diameter. The elastic tubing stretches a first predetermined length. First and second end plugs are secured inside the elongated cavity at the respective first and second ends, with a widest portion of each first and second end plugs closest to its respective first and second ends. A cord has third and fourth ends that is threaded through the elastic tubing and the first and second end plugs. The cord is a second predetermined length that is shorter than the first predetermined length.