Retractable Leash Spool Mechanism for Smartphone Drop Prevention
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Solution Overview
Problem
The challenge lies in preventing accidental drops and loss of smartphones, which are increasingly expensive and essential for communication, especially with the rise of slimline models that are slippery and difficult to handle, leading to damage and costly replacements.
Innovation Solution
A retractable, tethered mobile device leash system that attaches to a smartphone via a suction cup or case and secures it to the user with a security clip, featuring a spool mechanism with springs and a flexible cable, along with an alert signal transmission system to prevent drops and facilitate easy retrieval if lost or stolen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retractable leash system is implemented to prevent phone loss, then phone security and traceability are improved, but device complexity increases
Solution Approach 1:
The leash system is nested within a compact housing that contains the spool mechanism, spring, and cable. When not in use, the flexible cable is wound around the spool inside the housing, making the entire system compact and portable while maintaining full functionality when deployed.
Solution Approach 2:
The leash system transitions from a static compact state to a dynamic extended state through the retractable mechanism. The spring-loaded spool allows the cable to extend when needed and automatically retract when released, providing adaptive security that responds to user needs without requiring constant manual adjustment.
2Ease of operation
If a retractable cable mechanism is used to secure the phone, then phone accessibility is improved, but the risk of accidental drop increases
Solution Approach 1:
The leash system is pre-configured with the phone case and attached to the user's clothing or bag before any potential drop situation occurs. This preliminary securing action ensures the phone is already protected and tethered, eliminating the need for reactive measures after a drop incident begins.
Solution Approach 2:
The retractable leash acts as a pre-positioned safety mechanism that prevents catastrophic damage by catching the phone before it hits the ground. The flexible cable and spool mechanism are designed to absorb and dissipate the energy of accidental drops, protecting both the phone and user from harm.
3Loss of time
If the leash is designed to be always accessible for quick phone retrieval, then response time is improved, but the mechanism becomes more complex
Solution Approach 1:
The leash system is designed to be self-activating through the spring-loaded spool mechanism. When the user needs quick access to their phone, they simply pull or release the cable, and the spring automatically unwinds to extend the leash, providing rapid phone retrieval without requiring complex manual operation or additional power sources.
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 secures and protects smartphones from accidental drops, ensures they are always accessible, and provides GPS tracking for lost devices, reducing damage and replacement costs while maintaining user convenience.
Implementation Method 1
attached to the back of a cell phone via suction cup
Implementation Method 2
a spool mechanism with springs
Data Source
AI summary
A combined portable electronic leash and mobile phone case includes a mobile phone case, and a portable leash. The leash includes a housing including a centrally registered rotational axis, a spool having a plurality of stationary spokes fixedly attached thereto, a primary spring member anchored to the spokes and wound along a circumferential inner surface of the spool, a central bracket and a secondary spring located therein, a flexible cable having a proximal end anchored to the bracket and wrapped about a circumferential outer surface of the spool, a fastener attached to a distal end of the flexible cable and detachably connected to the mobile phone case, and a mechanism for transmitting an alert signal when the flexible cable is extracted beyond a maximum threshold distance outwardly away from the housing. The alert signal transmitting mechanism is coupled to the housing and the flexible cable.