Automatic Shoelace Tying System with Motorized Cable Actuation
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Solution Overview
Problem
Existing automatic shoelace systems for footwear are not adequately designed to address the difficulty individuals with limited dexterity or mobility face in tying and adjusting shoelaces, particularly for young children, the elderly, and those with handicaps or obesity, as they require manual effort and are not universally compatible with various shoe types.
Innovation Solution
An automatic shoelace tying system comprising a DC electric motor, flexible cables, rechargeable battery, and push-button switches that allow for wireless control, enabling the system to tighten or loosen shoelaces with minimal user effort, and is compatible with a range of footwear sizes and types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual shoelace tying is used, then the system is simple and requires no additional components, but it requires significant manual effort and is difficult for individuals with limited dexterity or mobility
Solution Approach 1:
The system uses a foot presence sensor to automatically detect when a foot is inserted into the shoe and triggers the motor to tighten the shoelaces without requiring manual operation. The system serves itself by using the user's own foot insertion action as the trigger mechanism, eliminating the need for buttons or switches that would require manual dexterity.
Solution Approach 2:
The manual mechanical action of tying shoelaces by hand is replaced with an automated electromechanical system consisting of a motor, cables, and a control circuit. The motor-driven cable system mechanically pulls the shoelaces tight, substituting the complex manual knot-tying process with a simpler automated pulling mechanism.
2Ease of operation
If automated shoelace systems are implemented, then ease of operation is improved, but the device complexity and cost increase
Solution Approach 1:
The motorized cable system serves multiple functions: it can tighten the shoelaces, loosen them, and maintain tension. The same hardware infrastructure (motor, cables, attachment fixtures) handles both tightening and loosening operations by simply reversing the motor rotation direction, eliminating the need for separate mechanisms for each function.
Solution Approach 2:
The system controls shoelace tension by changing the motor rotation direction and duration parameters. By adjusting these electrical parameters through simple button presses or wireless signals, the system achieves various tension levels without mechanical adjustments or multiple components.
3Adaptability or versatility
If traditional shoelace systems are used, then compatibility with all shoe types is maintained, but accessibility for individuals with disabilities is reduced
Solution Approach 1:
The system is divided into modular components: attachment fixtures that can be positioned at different locations on various shoe types, a separate motor unit, and adjustable cable lengths. This segmentation allows the same core system to be adapted to different footwear configurations without requiring a completely different design for each shoe type.
Solution Approach 2:
The system incorporates adjustable elements including movable attachment fixtures and variable cable lengths that can be configured to match different shoe geometries. The dynamic adjustability allows the system to maintain effectiveness across various footwear types while providing automated operation for improved accessibility.
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 system provides convenience, time-saving, improved accessibility, enhanced comfort, and versatility by allowing effortless secure fastening of shoes, accommodating users with mobility issues and ensuring optimal fit without manual lacing.
Implementation Method 1
a DC electric motor, wherein the DC electric motor has a shaft extending from an end of its armature
Implementation Method 2
a rechargeable battery
Data Source
AI summary
An automatic shoelace tying system is provided that aims to address the problem of manual shoe tying by providing a convenient and efficient solution. The device, powered by a battery, includes a compact motor and user-friendly buttons for controlling the motor's movement. By attaching the device to the shoe where laces are typically positioned the need for manual tying is eliminated. The invention streamlines the shoe fastening process, saving time and effort, improving convenience, and improving comfort by ensuring a secure fit. The device also caters to individuals with limited dexterity or mobility issues, thereby enhancing accessibility. Furthermore, the device offers versatility, as it is compatible with various shoe types and sizes.