Anti-Fall Cable for Windows and Doors

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Solution Overview

Problem

Existing door and window fixing systems are prone to detachment, leading to potential falls and injuries due to misuse, wear, improper assembly, or unexpected stress, which existing safety solutions fail to adequately prevent or mitigate.

Innovation Solution

An anti-fall safety system utilizing a partially flexible elongated cable with engagement elements and an elastic means to prevent detachment and absorb falling energy, ensuring the door or window remains secured and reduces impact in case of hinge failure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional hinge fixing systems are used to attach doors to casings, then the door can be freely opened and closed, but the door may detach and fall due to misuse, wear, or assembly errors

Engineering Contradiction:

Improvedoor opening and closingVSAvoiddoor attachment security

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by introducing a safety cable that is pre-installed alongside the hinge mechanism. This cable acts as a backup retention system that engages automatically if the hinge fails, preventing the door from falling. The elastic element integrated into the cable system provides cushioning by absorbing impact energy when the door detaches, thereby mitigating the harmful effect while preserving normal door operation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If safety measures are added to prevent door detachment, then reliability improves, but device complexity increases

Engineering Contradiction:

Improvedoor attachment securityVSAvoidfixing system structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs flexible shells and thin films by using a flexible cable as the safety retention mechanism. The cable's flexibility allows it to accommodate door movement and deformation while maintaining continuous engagement. This flexible cable approach simplifies the safety system compared to rigid mechanical locks, as the cable naturally adapts to door position changes without requiring complex adjustment mechanisms.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent introduces an intermediary by integrating an elastic element within the cable system. This elastic element acts as a mediator between the door weight and the cable tension, providing controlled flexibility and energy absorption. The elastic element softens the impact when the door detaches, serving as a cushioning intermediary that reduces the severity of falling while maintaining the safety function.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If a rigid safety cable is used to prevent door falling, then detachment prevention is strong, but impact damage remains high upon failure

Engineering Contradiction:

Improvedetachment preventionVSAvoidimpact damage from falling

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies beforehand cushioning by pre-installing the elastic element within the cable system that absorbs impact energy when the door fails to detach. This elastic cushioning mechanism is activated automatically upon hinge failure, converting the high-impact falling event into a controlled, energy-absorbing process that significantly reduces damage while maintaining strong detachment prevention.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

Effectively prevents doors and windows from falling and limits damage by absorbing energy upon detachment, providing a secure and safe operation without hindering normal use.

Implementation Method 1

an elastic means (9) whose compression and/or following release are intended to damp the falling energy due to the detachment of the first component (18) with respect to the second component (17)

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS10458170B2Anti-fall safety system for wings, doors, main doors, up-and-over doors, windows, vasistas windows

Publication Date: 2019.10.29 SERRAMETAL

AI summary

Anti-fall safety system intended to prevent the detachment of a first component with respect to a second component of an opening and closing system, wherein the first component and the second component are constrained to each other by a reciprocal retainer, in such a way that the first component is mobile with respect to the second component, the safety system having an at least partially flexible elongated means which is provided with at least one engagement element placed in correspondence of one end of the elongated means, the engagement element being intended to engage in correspondence of an engagement point, following the engagement the elongated means preventing the detachment of the first component with respect to the second component.