Automatic Foldable Door with Two-Way Structure for Narrow Space Safety
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Solution Overview
Problem
Large width access doors in emergency situations can hinder or injure evacuees due to their radius of gyration, return travel, and moving direction, which is a concern for fire safety and personnel safety in narrow spaces.
Innovation Solution
An automatic released foldable door with a two-way door structure that divides the door into smaller, hinged leafs with a locking mechanism and damping resistance, allowing for a smaller radius of gyration and amplitude, enabling the door to fold and lock securely without obstructing movement, featuring a touch pressure device, elastic latch rod, and electromagnetic buckles for reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large width access door is used to ensure fire safety and access control, then the door can provide adequate safety protection, but the radius of gyration and moving direction of the door leaf can hinder or injure evacuees in narrow spaces
Solution Approach 1:
The large width access door is divided into multiple door leaves (first door leaf and second door leaf) that can fold relative to each other. This segmentation reduces the radius of gyration and amplitude of each individual door leaf, eliminating the harmful effect of large-scale door movement on evacuees while maintaining the overall fire safety function of the access door system.
2Object-affected harmful factors
If the door is designed to fold into a narrow space to reduce radius of gyration, then the movement of people is no longer hindered, but the door structure becomes more complex requiring multiple hinges and fixing devices
Solution Approach 1:
The first door leaf and second door leaf are arranged in a nested configuration where the second door leaf can fold behind the first door leaf. This nesting arrangement allows the door system to collapse into a compact form within a narrow space, reducing the radius of gyration while maintaining a relatively simple overall structure compared to other foldable door designs.
3Reliability
If multiple fixing devices and locking mechanisms are added to ensure reliable door closing in emergency, then the auto-closing performance is improved, but the device complexity increases
Solution Approach 1:
The first fixing device and second fixing device are combined with the hinge mechanism to form an integrated locking system. The fixing devices include electromagnetic buckles and locking latches that are merged with the door leaf structures, allowing reliable auto-closing functionality while reducing the number of separate components compared to traditional multi-device systems.
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 solution provides a practical and safe access solution in emergency shelters or narrow spaces by ensuring unobstructed movement and reliable auto-closing performance, reducing the risk of injury and enhancing fire safety.
Implementation Method 1
A third fixing device (7) is an electromagnetic buckle
Implementation Method 2
allowing the door leaf to be moved back to the close position by a closing door device
Implementation Method 3
The elastic latch rod is inserted into the mounting hole with one end thereof movable in and out of the receiving hole of the touch pressure device
Data Source
AI summary
Disclosed is an automatic released foldable door having a two-way door structure, which foldable door comprises a first closing door device (11) and a second closing door device (13), wherein a first door leaf (2) is connected to one side of the first closing door device (11), the second closing door device has one side connected to the first door leaf (2) and the other side thereof connected to a second door leaf (6), the second door leaf (6) is a door-in-door and a two-way door structure; and the foldable door further comprises a plurality of fixing devices (3, 31, 7) and at least one hinge (4). The foldable door has a relatively small turning radius and can be folded for receiving, and the door-in-door can be rotated in different directions.