Adjustable Spring Hinges for Realistic Door Entry Training
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Solution Overview
Problem
Emergency personnel face challenges in training for forcible door entry techniques due to the lack of realistic simulation tools that can mimic various door types and mounting configurations, limiting their ability to practice effectively with different tools and scenarios.
Innovation Solution
A portable and reusable forcible entry door training prop that simulates a locked door, featuring a base plate, door frame, spring-loaded hinges, and adjustable resistance members to replicate the forces encountered during door entry, allowing training for different door types and configurations such as inward and outward opening, left and right hand openings, and steel or wood jams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional training methods are used without realistic simulation tools, then training simplicity is maintained, but training effectiveness and realism deteriorate
Solution Approach 1:
The patent creates a simplified copy of a real door system that replicates the essential characteristics and forces encountered during forcible entry. The training door includes a door assembly with hinges that provide resistance forces similar to real doors, allowing trainees to practice forcible entry techniques without needing complex, expensive, or dangerous real door structures. This copy maintains training effectiveness while reducing equipment complexity and risk.
2Adaptability or versatility
If a fixed door training prop is used, then manufacturing simplicity is maintained, but adaptability to different door types deteriorates
Solution Approach 1:
The training door system is divided into separate, modular components including a base structure, a removable door assembly, and adjustable resistance mechanisms. The door assembly can be detached and reconfigured to simulate different door types (swing doors, sliding doors, security doors) and configurations (inward/outward opening, left/right hand openings). This segmentation allows the same basic training prop to adapt to multiple scenarios without requiring complete redesign, balancing manufacturing simplicity with operational versatility.
Solution Approach 2:
The hinge assembly incorporates adjustable resistance mechanisms that can be modified to provide different force characteristics. The hinges include springs or adjustable mechanisms that can be tuned to simulate the resistance forces of different door types and locking mechanisms. This dynamic adjustability allows a single training prop to realistically simulate various door configurations and resistance levels that trainees would encounter in different emergency scenarios.
3Reliability
If spring-loaded hinges are added to simulate door resistance, then training realism is improved, but device complexity increases
Solution Approach 1:
The hinge assembly uses adjustable parameters such as spring force, hinge stiffness, and resistance magnitude that can be modified to match different door types and locking mechanisms. By changing these parameters, the same hinge mechanism can accurately simulate the resistance forces of lightweight interior doors, heavy exterior doors, security doors, or locked doors with different locking mechanisms. This parameter adjustability achieves high force simulation accuracy without requiring completely different mechanisms for each door type, thereby limiting the increase in overall device complexity.
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
Enables realistic and versatile training for emergency responders to practice forcible entry techniques on various door types, improving their proficiency and preparedness for emergency situations by simulating the resistance and forces they would encounter in real scenarios.
Implementation Method 1
The hinges include springs that bias the slidable hinges away from the inner surface of the first side jamb and which resist compression with sufficient force to simulate forces that are encountered when attempting to wedge a pry tool between the second side edge of the door and the second side jamb
Data Source
AI summary
The present invention relates generally to apparatus for training the art of forcible door entry for emergency personnel such as firefighters and, in particular, a reusable forcible entry door training prop adapted to simulate a locked door and allow individuals to conduct training in forcible entry techniques for different door types and mounting configurations (e.g., opening inward or outward, left hand opening or right band opening, steel jam or wood jams).