Exercise Apparatus Central Pulley Locking Mechanism

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Solution Overview

Problem

Current Pilates reformer exercise apparatuses lack versatility in the types of exercises that can be performed, as they require independent adjustment of pull cords and lack mechanisms for coordinated limb movements.

Innovation Solution

The exercise apparatus features a central pulley locking mechanism and free pulleys that allow for a pull cord to be looped through multiple pulleys, enabling adjustable resistance and facilitating coordinated movements by ensuring equal tension across handle portions, enhancing exercise variety and proprioceptive feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional reformer apparatus uses independent pull cords for each handle, then the structure is simple, but the versatility of exercises is limited

Engineering Contradiction:

Improveversatility of exercisesVSAvoidcomplexity of pulley system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple pull cords into a single continuous pull cord that loops through multiple pulleys (first frame pulley, first free pulley, central pulley, second free pulley, second frame pulley). This merging allows coordinated movement of both handles simultaneously, enabling a wider variety of exercises including bilateral symmetrical movements, while the multiple pulley configuration provides the necessary mechanical complexity to achieve versatile exercise patterns.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of operation

If traditional reformer requires independent adjustment of pull cords, then adjustment is straightforward, but resistance coordination between limbs is poor

Engineering Contradiction:

Improveease of resistance adjustmentVSAvoidcoordination of resistance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The single continuous pull cord merges the resistance systems of both handles, ensuring that resistance is automatically coordinated between limbs. When one handle moves, it affects the tension and position of the other handle through the shared cord and pulley system, providing reliable resistance coordination for bilateral exercises while still allowing independent handle adjustment through the free pulleys.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The central pulley acts as an intermediary element that connects and coordinates the pull cord segments on both sides of the apparatus. This central mediation point ensures equal tension distribution and synchronized movement between the two handles, improving resistance coordination while maintaining ease of operation through the intermediary's automatic balancing mechanism.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the pull cord is looped through multiple pulleys, then exercise variety increases, but the device complexity increases

Engineering Contradiction:

Improvevariety of exercise patternsVSAvoidnumber of pulleys and cord routing

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The continuous pull cord looping through multiple pulleys creates a universal system that can perform multiple exercise functions. The same pulley configuration enables unilateral exercises, bilateral symmetrical exercises, coordinated limb movements, and independent handle adjustments, making the apparatus universally applicable to various exercise patterns without requiring separate mechanisms for each exercise type.

Inventive Principle:

Principle #6Universality (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

This design allows for a wider range of exercises, including those requiring coordinated limb movements and independent exertion, providing improved versatility and efficiency in adjusting resistance levels compared to traditional reformer systems.

Implementation Method 1

The pull cord is consecutively looped about the first frame pulley, the first free pulley, the central pulley, the second free pulley and the second frame pulley along the pull cord

Methodology Applied

Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 2

The resistance member is configured to resist movement of the pull cord with the pull cord being in tension

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS9526937B2Exercise apparatus with a pull cord looped about a central pulley and first and second free pulleys

Publication Date: 2016.12.27 BALANCED BODY INC

AI summary

An exercise apparatus includes a frame, first and second free pulleys, first and second handle portions, first and second frame pulleys attached to the frame, a central pulley, a pull cord, and a resistance member. The first free pulley includes a first pulley wheel and a first hub with the first pulley wheel configured to rotate in relation to the first hub. The second free pulley includes a second pulley wheel and a second hub with the second pulley wheel configured to rotate in relation to the second hub. The first and second handle portions are in mechanical communication with the first and second hubs with the pulley wheels configured to rotate relative to the handle portions. The pull cord is looped about the pulleys with the resistance member configured to resist movement of the pull cord.