Spring-Loaded Door Stop with Friction Locking
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Solution Overview
Problem
Conventional door stopping systems require manual placement and holding of objects to maintain door position, which is impractical and inefficient, especially in situations like police breaching where quick and secure door management is necessary.
Innovation Solution
A portable self-deploying door stopping system comprising a mounting member, supporting member, leg member, spring member, and sleeve member, which can be easily attached to a door and selectively positioned in folding, partially unfolding, and fully unfolding configurations to securely hold the door open or closed, utilizing a spring mechanism for automatic deployment and friction-based locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual door stopping methods are used (placing heavy objects or wedges), then the door can be held in position, but the process is impractical and inefficient requiring continuous manual holding
Solution Approach 1:
The door stopping system is self-deploying through a spring mechanism that automatically extends the leg member to block the door upon door movement, eliminating the need for manual placement and holding of stopping objects
Solution Approach 2:
The system pre-positions the door stop in a retracted state ready for deployment, and the spring mechanism is pre-loaded to automatically activate when the door moves, providing immediate door blocking without human intervention
2Reliability
If conventional door stops are used, then door positioning is achieved, but they require someone to place and hold the object continuously
Solution Approach 1:
The system automatically deploys and maintains door stopping function through the spring-loaded leg member that extends when needed and can be reset without continuous manual holding
Solution Approach 2:
The door stopping system transitions from a static manual hold to a dynamic self-activating mechanism that responds to door movement, with the spring mechanism providing automatic deployment and resetting capability
3Extent of automation
If a self-deploying mechanism with multiple moving parts is used, then automation is improved, but device complexity increases
Solution Approach 1:
The door stopping system is divided into functional segments (mounting member, supporting member, leg member, spring member, sleeve member) that can be manufactured and assembled separately, simplifying the overall complexity while achieving automation
Solution Approach 2:
The system uses a simple spring-loaded dynamic mechanism that provides automatic deployment through basic mechanical components, achieving high automation with relatively simple device structure
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 system allows for quick and secure management of doors, preventing them from swinging back during police breaching operations, enhancing safety and efficiency by eliminating the need for manual holding and reducing the risk of injury.
Implementation Method 1
a spring member, a sleeve member, a first pin member and a second pin member. In this embodiment of the present invention, the mounting member is pivotally connected with the supporting member via the first pin member
Implementation Method 2
The wedge is kicked into position and the downward force of the door, now jammed upwards onto the doorstop, provides enough static friction to keep it motionless
Data Source
AI summary
A door stopping system comprises a mounting member, a supporting member, a leg member, a spring member, a sleeve member, a first pin member and a second pin member. The mounting member is pivotally connected with the supporting member via the first pin member, the leg member is pivotally connected with the supporting member via the second pin member, the mounting member and the leg member are oppositely located to each other along the supporting member, the spring member is biased in between the supporting member and the leg member, and the sleeve member is slidably sleeved on the supporting member. The mounting member is configured to be removably attached to a door. The leg member is configured to contact a ground.