Center Post Locking Mechanism Resisting Drill Attacks
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Solution Overview
Problem
Existing vertical lock systems are vulnerable to drill attacks and allow positive force to be applied directly to the padlock through the actuation knob, compromising security and ease of use.
Innovation Solution
A locking mechanism featuring a sled and actuator system on a center post, where the actuator moves vertically to unlock the padlock, absorbing forces through a spring mechanism, preventing direct force application and drill attacks by positioning the padlock vertically and using a cover to restrict drilling access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the actuation knob is directly connected to the padlock, then the locking mechanism is simple to operate, but a person can apply positive force onto the padlock using the actuation knob to unlock it or break it open
Solution Approach 1:
The patent introduces an intermediary mechanism (the sled and cam system) between the actuation knob and the padlock. When force is applied to the knob, the sled moves vertically and actuates the cam, which then rotates to unlock the padlock. This intermediary system prevents direct force application to the padlock while maintaining ease of operation through the knob.
Solution Approach 2:
The locking mechanism is segmented into distinct functional components: the actuation knob, the sled, the cam mechanism, and the padlock. This segmentation allows each component to perform its specific function independently, with the sled and cam acting as force-distributing intermediaries that protect the padlock from direct impact while maintaining operational simplicity.
2Ease of operation
If the padlock is placed in a horizontal position with key hole in uncovered position, then the lock is easily accessible, but the arrangement is vulnerable to drill attack
Solution Approach 1:
The patent reorients the padlock from a horizontal position to a vertical position on the sled. This dimensional change in orientation protects the key hole from drill attacks by positioning it in a less accessible vertical plane, while the sled's vertical movement ensures the key hole remains accessible during normal operation.
Solution Approach 2:
The design preliminarily positions the padlock in a protected vertical orientation with the key hole shielded from direct horizontal drilling access. The cover plate further preliminarily protects the key hole area before any unlocking action occurs, maintaining security while allowing easy access through the vertical key insertion direction.
3Device complexity
If no means are provided for dampening breaking forces, then the locking mechanism structure is simple, but breaking forces can reach the padlock causing damage
Solution Approach 1:
The patent incorporates the sled and cam mechanism as a beforehand cushioning system. The sled acts as a buffer that absorbs and distributes breaking forces applied to the actuation knob, preventing these forces from directly reaching the padlock. This cushioning mechanism is built into the structure before any forcing attempt occurs.
Solution Approach 2:
The sled and cam mechanism serve as intermediary elements that stand between the actuation knob and the padlock. These intermediaries absorb and redirect breaking forces through their mechanical movement, protecting the padlock from damage while maintaining the simplicity of the overall structure through their integrated design.
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 mechanism provides enhanced security by resisting drill attacks and preventing positive force application on the padlock, while maintaining ease of use and offering improved locking functionality.
Implementation Method 1
absorbing forces through a spring mechanism
Data Source
AI summary
A locking mechanism for a storage container is provided. The locking mechanism is positioned on a center post of the storage container and includes a sled, a handle or knob, a connecting mechanism, a sled arresting mechanism, and a lock. Depending upon the position of the lock, the handle can unlatch the container. When the lock is in the unlocked position, the sled arresting mechanism allows the unlatching of the container. When the lock is in the locked position, the sled arresting mechanism prevents the unlatching of the container. The locking mechanism is resistant to drill attack due to its vertical configuration and positioning of a cover on the center post.