Motor-Driven Exercise Machine Line Spool With Guide
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Solution Overview
Problem
Existing line-based weight training machines face issues with line jamming, line friction, and line wear due to slack lines around the spool, which affect the efficiency and safety of the strength training regime.
Innovation Solution
The implementation of a digital strength training machine with a motor-driven line system, including a controller circuit, a three-phase AC motor, and sensors to manage line tension and resistance, along with mechanisms like pulleys and line guides to prevent slack and reduce friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional line-based weight training machine is used, then the strength training function is provided, but line jamming, line friction, and line wear occur due to slack lines around the spool
Solution Approach 1:
The patent replaces the traditional mechanical spring-based tensioning system with a motor-driven spool system. The motor (214) actively controls the spool (208) to wind and unwind the exercise line, replacing passive mechanical tensioning with active electronic control. This substitution eliminates slack line issues through precise motor control rather than relying on mechanical spring tension.
Solution Approach 2:
The patent incorporates sensors (216) that detect line position and tension, providing feedback to the controller circuit (204). The controller uses this feedback to adjust motor (214) operation in real-time, maintaining optimal line tension and preventing slack conditions that cause jamming and friction. This closed-loop control system dynamically responds to line conditions to prevent harmful effects.
2Reliability
If a motor-driven line system with sensors and controller is implemented, then line tension and resistance are managed, but device complexity increases
Solution Approach 1:
The motor-driven spool system serves multiple functions: it winds and unwinds the exercise line, maintains line tension, controls resistance levels, and prevents slack conditions. The controller circuit (204) integrates multiple control functions including motor control, sensor data processing, and tension regulation. By consolidating these functions into a single integrated system rather than separate components, the patent reduces overall system complexity while maintaining reliable line tension control.
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 reduces line jamming, friction, and wear, enhancing the efficiency and safety of the strength training experience by maintaining consistent line tension and preventing slack conditions.
Implementation Method 1
a three-phase AC motor, and sensors to manage line tension and resistance
Data Source
AI summary
A weight training machine comprises: a motor; a line that is tensioned by the motor; a spool that takes up the line, wherein the spool includes a flange wherein the flange defines a capture region for the line; and a line guide adjacent to the spool, wherein the line guide prevents the line from persistently escaping from the capture region for the line.