Door Lock Assembly with Retainer Bracket for Force Resistance
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Solution Overview
Problem
Conventional door locks can fail or break when sufficient force is applied, compromising security in situations requiring reinforced access control, such as lockdowns.
Innovation Solution
A door lock assembly comprising an attachment plate with a mounting slot and a lock tab that engages a retainer bracket assembly, providing enhanced security by preventing the door from being opened through the application of excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock is used, then the door can be locked in normal conditions, but the lock can fail or break when sufficient force is applied
Solution Approach 1:
The lock assembly is divided into multiple components including a lock body, lock bar, retainer bracket, and mounting bracket. This segmentation allows each component to be optimized for its specific function while distributing the mechanical stress across multiple elements, preventing single-point failure under forceful attacks.
Solution Approach 2:
The patent combines the lock mechanism with a retainer bracket assembly that engages with the door frame. This merging creates a unified system where the lock bar and retainer bracket work together to distribute and resist applied forces, enhancing overall strength and reliability simultaneously.
2Reliability
If a simple lock mechanism is used, then the device complexity is low, but the security against forceful entry is insufficient
Solution Approach 1:
The lock assembly incorporates movable components including a spring-loaded lock bar that can extend and retract, and a rotatable retainer bracket. These dynamic elements allow the system to adapt to different operational states (locked/unlocked) while maintaining structural integrity, achieving high reliability without excessive complexity.
Solution Approach 2:
The retainer bracket acts as an intermediary element between the lock bar and the door frame. It translates the linear motion of the lock bar into a securing engagement with the frame, providing enhanced security while keeping the overall mechanism relatively simple through this mediating component.
3Strength
If a conventional lock is used, then the installation is simple, but the lock can be compromised by excessive force
Solution Approach 1:
The patent employs parameter changes in the form of adjustable mounting brackets and configurable retainer bracket positions. This allows the same basic design to be manufactured with varying specifications to meet different security requirements, achieving high strength characteristics while maintaining ease of manufacture through standardized components with adjustable parameters.
Data Source
AI summary
A lock assembly for locking a door includes an attachment plate defining a plate upper end, a plate lower end opposite the plate upper end, a plate first side and a plate second side, the attachment plate defining a mounting plate extending from the plate lower end towards the plate upper end; and a lock bracket defining a lock tab extending laterally outward from the attachment plate at the first plate side and configured to engage a retainer bracket assembly to lock the door in a closed position.