Door Barricade Apparatus Rapid Deployment Under Door
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Solution Overview
Problem
Existing classroom door barricades are not easily installable or removable, often require structural modifications, and can be overcome by intruders with force, lacking rapid deployment and effective resistance.
Innovation Solution
A door barricade apparatus comprising a base with a door engaging member, extensions that engage the door jamb and wall, and a pressing member with a threaded rod and pliant stop, allowing quick installation and significant force resistance without modifying the door or door jamb.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior barricade devices are mounted onto the door or doorjamb, then the device can restrict access, but it requires structural modifications and cannot be rapidly installed or removed
Solution Approach 1:
The barricade device is divided into separate components: a base portion that engages with the door, an extension portion that reaches the doorjamb, and a pressing member that applies force. This segmentation allows the device to be installed rapidly without structural modifications while maintaining effective access restriction through coordinated engagement of multiple components.
Solution Approach 2:
The extension portion acts as an intermediary element that connects the base portion to the doorjamb without requiring direct mounting to either structure. This intermediary component enables the device to span the gap between door and doorjamb, achieving reliable access restriction while allowing rapid deployment and removal.
2Reliability
If prior barricade devices require mounting or structural modifications, then they can be securely installed, but they increase the complexity of installation and removal
Solution Approach 1:
The pressing member is designed to be movable along the door surface, allowing it to be positioned and secured dynamically without permanent mounting. The extension portion similarly engages with the doorjamb in a dynamic manner, enabling secure barricade installation while maintaining simplicity of deployment and removal through motion rather than fixed attachment.
3Strength
If the base mid-section thickness is greater than the spacing between floor and door bottom edge, then the base provides more structural support, but it cannot be properly positioned under the door
Solution Approach 1:
The base is designed with non-uniform thickness: the mid-section has reduced thickness to allow it to fit under the door, while other portions of the base maintain sufficient thickness for structural support. This local variation in quality enables proper positioning under the door while preserving the necessary strength for effective barricading.
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 rapid and secure restriction of classroom access by sandwiching the door between the barricade components, effectively resisting attempts to open the door and ensuring teacher safety without requiring structural changes.
Implementation Method 1
The threaded rod has a first end aligned towards the door engaging member and has a second end extending in a direction opposite the door engaging member and terminating in a knob. The first end of the threaded rod may further include a pliant stop coupled to the first end of the threaded rod.
Implementation Method 2
The first end of the threaded rod may further include a pliant stop coupled to the first end of the threaded rod. The method may further include the step of engaging the pliant stop against the door.
Data Source
AI summary
An apparatus and method for efficiently restricting access to a classroom is described. The apparatus is particularly well suited for a school teacher needing to quickly barricade the classroom door and restrict access into the classroom. The apparatus of the present invention is efficiently slid under the door and tightened to the door and jamb to restrain the opening of the door.