Waterproof Housing With Damped Cable Retraction for Earbud Storage
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Solution Overview
Problem
Existing cable retraction systems for portable electronic devices often damage cables due to uncontrollable speed and undue 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 includes damping pads to control the rotational speed of the spool, ensuring safe and controlled retraction of earphone/earbud cables, and independent control for each cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a spring-loaded mechanism is used to retract the cable, then the cable can be automatically retracted, but the rotational speed becomes uncontrollable and undue pressure is applied to the cable
Solution Approach 1:
A friction wheel is introduced as an intermediary component between the spring-loaded mechanism and the cable. The friction wheel rotates between the cable and the housing, providing controlled friction that regulates the cable's rotational speed during retraction. This mediator prevents the spring from directly applying uncontrollable force to the cable, thereby reducing cable damage while maintaining automatic retraction functionality.
2Volume of stationary object
If the cable is wound tightly to save space, then storage efficiency is improved, but the cable becomes tangled and damaged
Solution Approach 1:
The system transitions from a static, tight-winding mechanism to a dynamic friction-controlled winding system. The friction wheel allows the cable to be wound progressively and controllably, adjusting the winding tension in real-time. This dynamic approach enables efficient space utilization while preventing the cable from being wound too tightly, thereby reducing tangling and damage.
3Loss of time
If the retraction mechanism operates at high speed, then retraction time is reduced, but cable damage increases due to undue pressure
Solution Approach 1:
The friction wheel creates a feedback mechanism where the resistance encountered during cable retraction automatically regulates the winding speed. As the cable is pulled in, the friction between the wheel and cable provides continuous feedback that prevents excessive speed buildup. This self-regulating feedback system reduces retraction time compared to completely uncontrolled mechanisms while preventing cable damage from high-speed 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 system effectively prevents cable damage by reducing rotational speed, allowing for safe and controlled retraction of earphone/earbud cables, extending their lifespan and preventing tangling.
Implementation Method 1
spring-biased spool mechanism
Implementation Method 2
friction-based braking system
Data Source
AI summary
A waterproof 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 first and second housing parts. At least one sealing element positioned between the first and second housing parts provides a waterproof seal to protect the components of the waterproof storage system.