Cable-Operated Exercising Machine with Counterweight Pulley System
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Solution Overview
Problem
Cable-operated exercising machines suffer from reduced resistance sensation as the user nears the highest point of movement, inertia issues leading to sudden load changes, and require complex adjustments for proper use, which can be uncomfortable and pose safety risks.
Innovation Solution
A novel exercising machine design where the operating apparatus and resistive load are connected by a flexible cable, allowing for constant tension and adjustable positioning, eliminating the need for pre-use adjustments and minimizing inertia through a unique pulley system that maintains balanced force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a cable-operated weights machine is used to provide resistive load, then the machine can reproduce familiar load models and enable muscle exercises, but the resistance sensation gradually diminishes as the movement reaches completion and the load nears its highest point
Solution Approach 1:
The patent introduces a counterweight mechanism that compensates for the gravitational force on the load during its movement. As the load rises and gravity reduces the resistance, the counterweight increases its opposing force to maintain constant total resistance, ensuring continuous muscular effort throughout the entire range of motion
Solution Approach 2:
The system dynamically changes the distribution of forces between the gravitational load and the counterweight mechanism throughout the movement cycle. By adjusting the counterweight's position and force contribution, the system maintains constant resistance parameters despite changes in gravitational effects on the moving load
2Power
If the set of weights is imparted high speed to increase explosive power, then the energy exceeds the current position energy and the weights continue moving upward due to inertia, but this causes sudden load changes and unpleasant sensations
Solution Approach 1:
The counterweight mechanism acts as an inertial compensator that offsets the momentum of the moving load. When the load gains excessive speed upward, the counterweight provides downward force to counteract the inertial effects, maintaining stable and predictable load conditions throughout the movement
Solution Approach 2:
The system applies preliminary counteracting forces through the counterweight mechanism to prevent harmful inertial effects before they occur. By continuously monitoring and counterbalancing the load's momentum, the system prevents sudden load changes and unpleasant sensations before they can affect the user
3Ease of manufacture
If cable-operated machines are designed to provide tangential resistance to the limb, then the cable can effectively transmit pulling force, but this only reproduces partially natural conditions where limbs are subject to combined loads in multiple directions
Solution Approach 1:
The operating apparatus is designed to perform multiple functions: it transmits cable tension forces while simultaneously guiding the user through complex multi-directional movements. The apparatus integrates cable attachment, movement guidance, and force application into a single versatile component that reproduces natural movement patterns
Solution Approach 2:
The system segments the force transmission and movement guidance functions into distinct components. The cable provides pure tension force, while the operating apparatus separately handles the complex spatial guidance and multi-directional movement reproduction, allowing each component to optimize its specific function
4Ease of operation
If conventional weights machines require pre-use adjustments for proper use, then the machine can be customized for different users, but this creates complexity and safety risks
Solution Approach 1:
The operating apparatus is designed to automatically adapt to different users without requiring manual adjustments. The system self-configures through the user's natural movement patterns and body mechanics, eliminating the need for pre-use setup while maintaining customization benefits
Solution Approach 2:
The patent merges the adjustment mechanisms into the main structural components of the machine. Rather than separate adjustment devices, the frame, cable routing, and operating apparatus are integrated to provide automatic adaptation, reducing overall device complexity while maintaining ease of operation
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 machine provides a more natural and consistent resistance experience, allowing for effective exercise of agonistic and antagonistic muscle groups without interruptions, ensuring user safety and ease of use by eliminating the need for pre-exercise adjustments.
Implementation Method 1
A novel exercising machine design where the operating apparatus and resistive load are connected by a flexible cable, allowing for constant tension and adjustable positioning, eliminating the need for pre-use adjustments and minimizing inertia through a unique pulley system that maintains balanced force application.
Implementation Method 2
A novel exercising machine design where the operating apparatus and resistive load are connected by a flexible cable, allowing for constant tension and adjustable positioning
Implementation Method 3
the user operates the load by means of a cable which is arranged between the load and an operating apparatus with which the user interacts... the load unit is of the gravitational type and usually comprises a plurality of weights
Data Source
AI summary
Exercising machine (1) provided with a frame (10) (110) (210) and with at least one operating apparatus (30) (130) (230) which can be used to perform a physical exercise and comprising a load group (15) (115) (215) supported by the frame (10) (110) (210) and connected to the operating apparatus (30) (130) (230) by means of at least one cable (26) (126) (226) wound around a plurality of transmission members (25) (140) (240) supported by the frame (10) (110) (210) and arranged so as to define a path (P) for the cable (26) (126) (226); the load group (15) (115) (215) comprising at least two load units (16, 17) separate from each other and connected together by means of the said cable (26) (126) (226) and arranged at ends of the path (P) on opposite sides of the operating apparatus (30) (130) (230) so that the latter can be tensioned on respective opposite sides by means of different loads.