Modular Training Door for Adjustable Forced-Entry Simulation

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Solution Overview

Problem

Existing training doors for emergency services are limited in simulating various door types and security mechanisms, often requiring replacement or repair after use and failing to adjust difficulty levels, thus not accurately replicating real-world scenarios.

Innovation Solution

A training door with interchangeable modules for simulating different door profiles and security mechanisms, featuring adjustable pressure devices and hinges, allowing for easy replacement and adjustment of difficulty levels without damaging the door.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If real doors are used for training, then realistic training scenarios are achieved, but the doors are destroyed after being forced open and must be replaced or repaired

Engineering Contradiction:
Improvetraining realismVSAvoiddoor replacement
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The training door system is divided into separable components: a reusable door frame and interchangeable door leaves. The door leaf can be removed and replaced independently after being damaged during training exercises, while the expensive door frame remains intact for continued use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The training door creates a copy of real door structures with similar physical properties and breaking characteristics, allowing realistic training scenarios without using actual operational doors. The interchangeable leaves replicate different door types that emergency services may encounter.

Inventive Principle:
Principle #26Copying

2Adaptability or versatility

If standard training doors are used, then training structure is maintained, but they cannot simulate various door types and security mechanisms

Engineering Contradiction:
Improvedoor type simulationVSAvoidtraining door structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The door frame is designed as a universal structure that can accommodate multiple types of door leaves with different profiles, materials, and security mechanisms. A single frame serves multiple training purposes by accepting various interchangeable leaves, eliminating the need for multiple specialized training doors.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The training door system transitions from a static, single-type door to a dynamic, configurable system. The ability to swap door leaves allows the training scenario to be adapted dynamically to match different operational requirements and door types encountered in the field.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If fixed pressure doors are used, then manufacturing is simplified, but they cannot simulate tightly fitting or loose doors

Engineering Contradiction:
Improvedoor fit simulationVSAvoiddoor frame production
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The hinge assembly incorporates an adjustable pressure mechanism that allows the door leaf contact pressure against the frame to be varied. This enables simulation of different door fit conditions (tightly fitting or loose doors) by adjusting a mechanical parameter rather than manufacturing different door frames.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The door pressure characteristic changes from a fixed manufacturing parameter to a dynamically adjustable operational parameter. The hinge mechanism allows trainers to modify the door's physical behavior during use, adapting to different training scenarios without re manufacturing the door assembly.

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

Enables realistic simulation of various door types and security mechanisms, facilitating effective training without damaging the door, and allowing for adjustable difficulty levels to simulate diverse real-world scenarios.

Implementation Method 1

An adjustable pressure device can be implemented using a spring with adjustable travel. By selecting the length of the spring travel, a predetermined pressure value can be selected or set

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4534791B1Training door for applied forces
Publication Date: 2026.02.18 INZINGER ANDREAS
  • EP4534791B1 patent drawingFigure 1~2
  • EP4534791B1 patent drawingFigure 3~5
  • EP4534791B1 patent drawingFigure 6~8a

AI summary

This application concerns a training door for emergency responders who frequently encounter situations where doors block escape routes and must be overcome as quickly and efficiently as possible. For such purposes, this application proposes a training door that can simulate various door types, thus enabling training in forcing open or overcoming doors during rescue operations.A training door (10) for emergency personnel is proposed, comprising: a door frame (20) mounted on a base plate (40); a door leaf (30) attached to the door frame (20), wherein the door leaf (30) is suspended in the door frame (20) by at least two hinges (50), and at least one hinge (50) has an adjustable pressure device (55); or a training door (10) comprising: a door frame (20) mounted on a base plate (40); a door leaf (30) attached to the door frame (20), wherein the door leaf (30) is suspended in the door frame (20) by at least two hinges (50), wherein a receiving device (21) for a frame change module (25) is arranged on a lock side (31) of the door frame (20) in order to simulate different door frame profiles; and/or a receiving device (37) for a door leaf change module (25) is arranged on a lock side (31) of the door leaf (20) in order to simulate different door leaf profiles.