Leg Training Device Foot Fixing with Magnetic Resistance

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Solution Overview

Problem

Existing leg training devices fail to provide a convenient and stable fixation of weights to the user's foot, compromising comfort, security, and the ability to quickly adjust the weight while ensuring proper limb movement.

Innovation Solution

A leg training device with a support frame connected to foot fixings using elongated profiles and a resistance mechanism featuring a magnetic system, adjustable pulley block system, and tie-rod system, allowing for quick and precise assembly and adjustment of weights.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If weights are fixed securely to the foot using traditional methods, then stability and security are improved, but comfort and ease of adjustment deteriorate

Engineering Contradiction:
Improveweight fixation securityVSAvoidcomfort and adjustment ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The foot fixing device is divided into multiple independent components: a heel rest, a toe rest, adjustable straps with buckles, and padding elements. Each component can be independently adjusted or removed, allowing secure weight fixation while maintaining comfort and ease of adjustment. The segmentation enables the user to customize the fit and quickly adjust or remove weights without affecting the entire system.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If weights are made easily adjustable for quick changes, then ease of operation is improved, but stability and secure hold deteriorate

Engineering Contradiction:
Improveweight adjustment speedVSAvoidweight hold security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The foot fixing system incorporates dynamic adjustment mechanisms including movable straps with buckles that can be quickly fastened and unfastened, and padding elements that can be repositioned. These dynamic components allow for rapid weight adjustment while maintaining secure hold through the progressive tightening capability of the strap system and the adaptive nature of the padding that conforms to the foot shape.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If traditional foot fixing methods are used, then device simplicity is maintained, but comfort and secure weight hold deteriorate

Engineering Contradiction:
Improvefixation system simplicityVSAvoiduser comfort
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The invention merges multiple functions into an integrated foot fixing assembly: the heel rest and toe rest are combined with adjustable straps, padding, and buckle mechanisms into a single coordinated system. This merging provides enhanced comfort and secure weight hold through the synergistic interaction of components, while maintaining relative simplicity as a unified assembly that attaches to the training device as one unit.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables quick and safe mounting of weights, providing comfortable usage and allowing for smooth adjustments, thereby facilitating effective exercise and rehabilitation by ensuring proper muscle balance and movement patterns.

Implementation Method 1

at least one magnetic system, said magnetic system having a wheel with a magnetic module, said magnetic module fixing a magnet assembly at a variable distance from said wheel

Methodology Applied
Scientific EffectMagnetic resistance: Magnetism

Data Source

PatentEP4225454B1Training device
Publication Date: 2025.04.30 FRYC DOBROCHNA
  • EP4225454B1 patent drawingFigure 1~1a
  • EP4225454B1 patent drawingFigure 2
  • EP4225454B1 patent drawingFigure 2a

AI summary

A leg training device comprising a support frame with a resistance mechanism and connectors affixed to the resistance mechanism and connected to foot fixings, characterised in that the foot fixing (48) has cushions (4, 6), a profile washer (5) and bindings (7a, 7b), wherein each foot fixing (48) is connected to the resistance mechanism (100) separately, at the same time the foot fixing (48) comprises a flat platform, wherein a rear wall (30) is attached to the top side of the platform (10), and the bottom of the platform (10) is fixed to connectors (500) guiding the platform (10) by pulling it up in a near-vertical direction.