Magnetic Cable Winding Structure for Manual Length Control
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Solution Overview
Problem
Existing cable winding structures are not convenient for controlling the length of cables, requiring motor control for retraction and extension, which is cumbersome and inefficient.
Innovation Solution
A cable winding structure comprising a bottom shell, rotating disc, and surface shell with a limiting track and reset magnet, allowing for manual control of cable length through magnetic interaction, enabling easy retraction and extension without external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motor control is used to retract and pull the cable, then the cable length can be controlled, but the device complexity increases
Solution Approach 1:
The patent replaces the motor-driven mechanical system with a magnetic field-based system. The reset magnet generates a magnetic field that interacts with the magnetic toggle wheel to automatically return it to the initial position, eliminating the need for motor control while maintaining cable length control functionality
Solution Approach 2:
The magnetic toggle wheel automatically returns to its initial position through magnetic attraction to the reset magnet after the cable is pulled out. This self-service mechanism eliminates the need for external power sources or complex control systems, achieving cable length control through passive magnetic interaction
2Ease of operation
If motor control is used for cable retraction, then the cable can be retracted, but the use of energy increases
Solution Approach 1:
The patent substitutes the energy-consuming motor system with a passive magnetic field system. The reset magnet continuously generates a magnetic field that exerts force on the magnetic toggle wheel without requiring external energy input, achieving cable retraction without additional energy consumption
Solution Approach 2:
The system uses the inherent magnetic field of the reset magnet to automatically pull the magnetic toggle wheel back to its initial position. This self-service mechanism eliminates the need for external power sources, achieving energy-free cable retraction
3Device complexity
If a simpler cable winding structure is used, then the device complexity decreases, but the reliability of cable control may worsen
Solution Approach 1:
The magnetic toggle wheel features asymmetric design with a sharp-cornered structure on one end and a rounded structure on the other end. The sharp corner engages with the limiting track to provide reliable mechanical constraint, while the rounded end allows smooth rotation. This asymmetric design ensures reliable cable length control through purely mechanical and magnetic interactions
Solution Approach 2:
The patent uses curved surfaces strategically: the rounded structure on the magnetic toggle wheel enables smooth rotation around the rotation pivot, while the limiting track provides a constrained path. This combination of curvature and constraint ensures reliable operation without complex mechanisms
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
Facilitates convenient and reliable control of cable length, allowing users to easily manage the outlet length of cables without the need for additional power sources, enhancing usability and manufacturing efficiency.
Implementation Method 1
a reset magnet and a magnetic toggle wheel, arranged on a surface of the rotating disc, where when the cable is pulled by an external force, the magnetic toggle wheel rotates with the rotating disc, and abuts against the limiting track that the magnetic toggle wheel passes, where the reset magnet is configured to adjust a swing position of the magnetic toggle wheel
Implementation Method 2
when the cable is pulled by an external force, the magnetic toggle wheel rotates with the rotating disc
Data Source
AI summary
Disclosed is a cable winding structure, including: an accommodating space, formed between a bottom shell and a rotating disc and configured to accommodate a wound cable; a limiting track, distributed on an inner wall of a surface shell; and a reset magnet and a magnetic toggle wheel, arranged on a surface of the rotating disc, where when the cable is pulled by an external force, the magnetic toggle wheel rotates with the rotating disc and abuts against the limiting track, where the reset magnet is configured to adjust a swing position of the magnetic toggle wheel that abuts against the limiting track to a position the same as that at which the magnetic toggle wheel does not abut against the limiting track. The cable winding structure can easily implement winding and storage of the cable, and make it convenient for a user to control an outlet length of the cable.