Retractable Cable Storage With Friction Braking
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Solution Overview
Problem
Existing cable retraction systems for portable electronic devices often damage cables due to uncontrollable speed and excessive pressure, leading to tangling and shortening of earphone/earbud cables.
Innovation Solution
A retractable storage system with a friction-based braking system and spring-biased spool mechanism that slows down the rotational speed of the spool during cable retraction, combined with independent control for each cable and a magnetically attracted dual cable design for secure storage and easy peeling, ensuring safe and efficient cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a spring-loaded rewinder is used to retract the cable, then the cable can be automatically retracted and stored, but the rotational speed becomes uncontrollable and excessive pressure is applied to the cable
Solution Approach 1:
The friction-based braking system continuously monitors and adjusts the rotational speed of the spool during cable retraction. The friction brake applies a controlled resistance force that creates a feedback loop, automatically regulating the retraction speed to prevent excessive pressure on the cable while maintaining automatic retraction functionality.
Solution Approach 2:
The system changes the physical parameters of the retraction process by introducing friction-based resistance. The friction brake modifies the rotational dynamics of the spool by applying a controllable friction force, thereby changing the speed and pressure parameters from uncontrollable spring-driven motion to a regulated retraction process that prevents cable damage.
2Volume of stationary object
If cables are stored together in the same compartment, then space is efficiently utilized, but cables become tangled and damaged
Solution Approach 1:
The storage system is segmented into separate storage compartments for different cables. Each cable has its own dedicated retraction mechanism and storage space, preventing cables from entangling with each other while maintaining efficient space utilization through modular compartment design.
Solution Approach 2:
Cables are automatically retracted and organized into their designated storage compartments before use. The friction-based braking system ensures cables are neatly wound and positioned in advance, preventing tangling and damage by maintaining proper cable arrangement throughout storage and retrieval operations.
3Reliability
If the cable is made magnetic for secure storage, then cable retention in the storage system is improved, but the cable may be difficult to remove
Solution Approach 1:
The magnetic retention system employs dynamic magnetic strength control. The magnetic force is strong enough to securely hold the cable in storage during normal conditions, but can be dynamically reduced or deactivated when removal is required, allowing easy cable extraction without permanent adhesion.
Solution Approach 2:
The magnetic properties of the cable or storage mechanism can be changed on demand. The magnetic strength parameter is adjusted to provide strong retention during storage while allowing easy removal when needed, transforming the static magnetic attraction into a controllable, variable magnetic field that adapts to different operational states.
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 effectively prevents cable damage by controlling the retraction speed, allowing for secure storage and easy access, while maintaining cable integrity and usability.
Implementation Method 1
A retractable storage system with a friction-based braking system and spring-biased spool mechanism that slows down the rotational speed of the spool during cable retraction
Implementation Method 2
A retractable storage system with a friction-based braking system and spring-biased spool mechanism that slows down the rotational speed of the spool during cable retraction
Implementation Method 3
a magnetically attracted dual cable design for secure storage and easy peeling
Data Source
AI summary
A storage system includes a protective housing member configured to mate with a handheld electronic device. The protective housing member includes at least one accessory station. The accessory station is configured to form between a surface of the protective housing member and a surface of at least one accessory item of the handheld electronic device. The protective housing member includes at least s wireless transmitter and/or an IC chip. The wireless transmitter is configured to facilitate a wireless connection between wireless components of the handheld electronic device and the protective housing member.