Telescopic Door Securement Device with Frictional Base

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

There is a need for a portable, lightweight, and tamper-proof door securing device that can easily engage with any door handle to prevent unauthorized entry, especially in hotel rooms, without requiring tools or damaging the door, and can be quickly disengaged for authorized access or emergencies.

Innovation Solution

A telescopic door securing device with a connector body having a U-shaped slot to engage around the door handle stem and a frictional base for secure floor engagement, allowing adjustable length and quick release mechanisms, enabling easy deployment and disengagement without tools or fasteners.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a portable door securing device is made lightweight and collapsible for easy transport, then it can be easily carried in luggage, but it may lack the strength or stability to effectively prevent door opening

Engineering Contradiction:

Improveweight of door securing deviceVSAvoideffectiveness in preventing door opening

Core Design Contradiction:

Weight of moving objectVSReliability

Solution Approach 1:

The door securing device is divided into multiple segments including a handle assembly, a telescopic pole with multiple sections, and a base assembly. This segmentation allows the device to be collapsible and lightweight for portability, while still providing sufficient length and structural integrity when deployed to effectively prevent door opening.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The telescopic pole sections are nested within each other, allowing the device to collapse into a compact form for easy storage in luggage. When deployed, the sections extend to provide the necessary length and rigidity to secure the door, resolving the contradiction between portability and effectiveness.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Adaptability or versatility

If the device uses a telescopic adjustable member for adaptability to different door types, then it can fit various door configurations, but the device complexity increases

Engineering Contradiction:

Improveadaptability to different door typesVSAvoidcomplexity of telescopic adjustment mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device incorporates a telescopic pole with sections that can slide relative to each other, allowing dynamic adjustment of the pole length to accommodate different door configurations. This dynamic structure provides adaptability while maintaining relatively simple construction through the use of standard telescopic mechanisms.

Inventive Principle:

Principle #15Dynamics

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 device effectively prevents unauthorized door opening while being easily transportable, lightweight, and tamper-proof, ensuring secure entry and quick exit options, addressing the limitations of existing door security solutions.

Implementation Method 1

a frictional base for secure floor engagement

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS10435928B2Portable door securement device

Publication Date: 2019.10.08 WORKMAN DAVID

AI summary

A portable door securement device is provided having a member extending from a first end engaged to a doorknob of a door to a second end engaged with a floor adjacent the door, to prevent opening of the door in a direction toward the engaged member. A slot at a first end of the member engages around a stem of the door handle thereby preventing disengagement of the member from the door, and preventing opening of the door.