Magnetic Safety Screw Assembly With Freely Rotating Head
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Solution Overview
Problem
Existing safety screw solutions are either easily replicable with standard tools, limiting their effectiveness for securing critical components, or become permanently locked, making them difficult to remove once set.
Innovation Solution
A safety screw assembly with a rotatable head and a translationally movable securing component, utilizing a magnetic link between the key and rotor, allowing secure tightening and loosening only with an authorized key, preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a special geometric shape imprint is used on the screw head, then unauthorized access is prevented, but the tool can still be easily obtained from suppliers
Solution Approach 1:
The screw head is divided into two independent parts: a stator that remains fixed and a rotor that can rotate independently. The rotor contains magnetic elements that interact with the key, creating a segmented security mechanism where the rotor can be selectively engaged or disengaged from the stator based on authorization
Solution Approach 2:
The traditional purely mechanical geometric imprint is replaced by a magnetic field-based interaction system. The key contains magnetic elements that interact with magnets in the rotor, substituting mechanical key-cutting with magnetic field recognition, which cannot be easily replicated
2Reliability
If a safety bolt is designed to break upon unscrewing attempt, then theft is prevented, but the screw becomes permanently locked and difficult to remove
Solution Approach 1:
The connection between the rotor and stator is made dynamic rather than static. The rotor can be freely rotated when disengaged, allowing the screw to be removed, but becomes locked to the stator when engaged by the key, providing conditional removability based on authorization
Solution Approach 2:
Instead of permanently destroying the screw head like breaking bolts, the system allows for reversible engagement. The rotor can be discarded (freely rotatable) when unauthorized access is attempted, but recovered (locked) when proper authorization is provided, enabling multiple uses
3Ease of operation
If a magnetic component is moved translationally by the key, then the screw can be locked or set into free rotation, but the key itself is not secured
Solution Approach 1:
The magnetic elements are merged into both the key and the rotor, creating a bidirectional magnetic coupling system. This ensures that both the key and the rotor are equally secured through the magnetic field interaction, preventing unauthorized copying or manipulation of either component
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 secure and quick insertion/removal of screws without unauthorized access, using a magnetic mechanism that prevents lock-picking and allows for multiple uses without becoming permanently locked.
Implementation Method 1
utilizing a magnetic link between the key and rotor
Data Source
AI summary
This invention relates to a safety screw assembly and operating key. The head of the screw is movable between a position where it is rotationally integral with the body and a position where it is freely rotatable. The head of the screw has on one face, an opening or a relief, that matches a relief or an imprint formed on part of the operating key. One end of the body of the screw has a stator and a rotor. The head of the screw forms a housing for receiving the rotor, and the assembly forms a translationally movable securing component which is movable between a loose position, where the head is freely rotatable and the rotor and the stator are rotationally integral, and a locked position, where the head and the stator are rotationally integral, where the key has at least one component for setting the rotor into rotation.