Eddy Current Resistance Mechanism for Bidirectional Strength Training
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Solution Overview
Problem
Current strength training equipment using physical weights is cumbersome, poses safety hazards, and can cause damage when dropped, and lacks bidirectional movement capabilities.
Innovation Solution
The use of magnets and eddy current braking forces to simulate resistance, eliminating the need for physical weights, enhancing safety by allowing easy equipment movement and reducing damage risk, and enabling bidirectional exercise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If physical weights are used to create resistance, then resistance training function is achieved, but equipment weight and size increase making it difficult to move
Solution Approach 1:
The patent replaces the mechanical weight-based resistance system with an electromagnetic system using eddy currents. Conductive plates interact with magnetic fields to generate resistance forces without requiring physical weights, thereby eliminating the trade-off between resistance force and equipment weight.
Solution Approach 2:
The patent changes the physical state and parameters of the resistance mechanism from static mass (weights) to dynamic electromagnetic interaction. By adjusting magnetic field strength, plate velocity, and material properties, the system achieves variable resistance without changing equipment mass.
2Force
If physical weights are used to create resistance, then resistance training function is achieved, but safety hazards increase when users cannot continue lifting
Solution Approach 1:
The patent replaces mechanical weights with an electromagnetic field-based system where resistance is generated through eddy currents. This eliminates the hazard of heavy physical weights that could injure users who drop them or cannot lift them, as the electromagnetic system can be instantly deactivated or reduced in force.
3Force
If physical weights are used to create resistance, then resistance training function is achieved, but damage risk increases when equipment is dropped
Solution Approach 1:
The patent substitutes physical weights with electromagnetic resistance mechanisms. The conductive plates and magnetic field components are designed to be lightweight and resistant to damage from dropping, eliminating the risk of equipment damage associated with heavy weights.
4Force
If physical weights are used to create resistance, then unidirectional resistance is provided, but bidirectional exercise capability is lost
Solution Approach 1:
The patent designs the electromagnetic resistance system to provide resistance in both directions of motion. The eddy current mechanism generates opposing forces regardless of the direction the conductive plate moves, enabling users to perform exercises in multiple directions with consistent resistance, thus achieving multi-functionality.
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 reduces equipment weight and size, increases user safety, and allows for adjustable resistance through air gap manipulation, enabling safe and versatile bi-directional exercise.
Implementation Method 1
a plate or fin moves in a bi-directional linear motion between two panels of one or more magnets to generate eddy current resistance that simulates and replaces the use of physical weights
Implementation Method 2
an array of at least two spaced magnets arranged in alternating polarity so as to produce a magnetic flux in a space proximate the array of magnets
Data Source
AI summary
A method of utilizing eddy currents to induce resistance that simulates and replaces physical weights in strength training exercise equipment includes a user moving at least one of a first member and a second member that supports magnets of alternating polarity, relative to each other bi-directionally. The bi-directional movement can be linear, radial, arcuate, or circular. The movement of the first member and a second member relative to each other induces in the first member eddy currents which resist the movement of the first member, the second member, or both bi-directionally.