Blind Cord Alarm System for Child Safety
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Solution Overview
Problem
Window blind pull-string cords pose a significant risk of injury and death to children due to entanglement, and existing solutions like cordless blinds are costly and not widely adopted, necessitating a third-party safety apparatus that can predict and alert others to potential hazards.
Innovation Solution
An alarm system comprising a spring-loaded contact and timer that activates a signal when the pull-string is held for an extended period, alerting users through audio or visual means, and can be retrofitted onto existing window blind cords to prevent accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cordless blinds are used to eliminate cord hazards, then child safety is improved, but manufacturing cost and product price increase significantly
Solution Approach 1:
The patent introduces an intermediary alarm device that mediates between the hazardous corded blinds and child safety. The alarm apparatus with spring-loaded contacts and timer circuitry acts as a monitoring intermediary that detects abnormal cord conditions and alerts adults, allowing corded blinds to remain in use while mitigating the safety hazard through an intermediate detection and warning system.
Solution Approach 2:
The alarm system provides self-service safety monitoring by automatically detecting cord tension conditions and triggering alerts without requiring adult supervision or intervention. The spring-loaded contacts and timer create a self-activating system that monitors itself and autonomously warns of potential hazards, making safety a self-service function of the blind system.
2Object-affected harmful factors
If alarm apparatus is added to detect cord tension, then child safety monitoring is improved, but device complexity increases
Solution Approach 1:
The alarm system is segmented into distinct functional modules: spring-loaded contact elements for tension detection, a timer circuit for duration measurement, and an alarm output stage. This segmentation allows each component to perform its specific function with simple, dedicated hardware, reducing overall system complexity while achieving comprehensive safety monitoring capability.
Solution Approach 2:
The spring-loaded contacts serve as mechanical intermediaries that convert cord tension into electrical contact signals. This mechanical-to-electrical intermediary mechanism provides a simple, reliable detection method that avoids complex sensors or electronics, maintaining low device complexity while achieving effective tension monitoring.
3Ease of operation
If long cords are used for ease of access, then operational convenience is improved, but entanglement hazard increases
Solution Approach 1:
The alarm system provides feedback about cord tension conditions to adults, creating a monitoring loop that compensates for the inherent hazard of long cords. The spring-loaded contacts continuously monitor cord tension and provide feedback through alarm signals when abnormal conditions are detected, allowing long cords to remain for convenience while safety is maintained through active feedback monitoring.
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 alarm system effectively alerts users to potential entanglements, reducing the risk of injury and death by distinguishing between normal use and prolonged cord tension, thereby conditioning children to avoid the cords and alerting adults to potential hazards.
Implementation Method 1
a contact capable of being pushed in a first direction as a result of force from a second direction; a spring disposed adjacent the contact switch, wherein the contact rests against the spring when the spring is extended and the contact rests against the contact switch when the spring is compressed
Implementation Method 2
a timer electrically connected to a contact switch, wherein when the contact touches the contact switch the timer begins to count; a signal that activates after the timer has counted a period of time
Data Source
AI summary
The present invention relates to an alarm for detecting and alerting a person of an event where a device is pulled on for an extended period of time. Specifically, the present invention relates to an alarm implemented on a pull-string. Even more specifically, the present invention relates to an apparatus, system, and method of using the same that alerts a person when something becomes tangled or is otherwise caught up in the pull-string of window blinds, shades, or other light blocking devices.