Deadbolt Housing With Integral Jamb Plate for Force Distribution
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Solution Overview
Problem
Existing deadbolt locks suffer from localized stress on the door frame and deadbolt, leading to potential cracking and snapping, which compromises the security and durability of the locking mechanism.
Innovation Solution
A deadbolt door locking apparatus with a housing and integral mounting plate that spreads force resistance and load bearing capacity across the entire apparatus, integrating the deadbolt and door frame to form a cohesive unit, minimizing stress concentration points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the deadbolt is imbedded within a door and slides into a door jamb housing, then the locking mechanism is simple and effective, but the force resistance is localized at the deadbolt housing creating stress concentration that makes the door frame prone to cracking and the deadbolt prone to snapping
Solution Approach 1:
The mounting plate is divided into multiple reinforcement sections that extend into the door jamb, distributing the force resistance across several discrete load-bearing points rather than concentrating it at a single housing location. This segmentation allows the structure to handle higher forces without localized failure.
Solution Approach 2:
The mounting plate extends perpendicular to the door frame face, adding a third dimension to the force distribution. By projecting reinforcement elements backward into the door jamb structure, the force resistance is distributed across multiple planes and depths, transforming a two-dimensional stress concentration into a three-dimensional stress distribution.
2Device complexity
If the deadbolt housing is imbedded into the door, then the locking mechanism is compact, but the localized load bearing creates weaknesses that reduce overall security against forced entry
Solution Approach 1:
The mounting plate integrates multiple functions into a single component: it serves as the structural reinforcement, the mounting surface for the deadbolt housing, and the force distribution element. By merging these functions, the design achieves high reliability without proportionally increasing device complexity.
Solution Approach 2:
The mounting plate is pre-installed and secured to the door jamb before the deadbolt housing is attached to the door. This preliminary action ensures that the reinforcement structure is already in place to handle forced entry forces, preventing stress concentration issues before they can occur during operation.
3Stability of the object's composition
If the deadbolt housing is secured to the door frame, then the locking mechanism is stable, but the concentrated stress at the housing location reduces the durability of both the door frame and deadbolt
Solution Approach 1:
The mounting plate provides localized reinforcement at critical stress points within the door jamb, while leaving other areas of the door frame unchanged. This selective reinforcement maintains the original stable locking mechanism while specifically addressing durability issues at the force concentration zones.
Solution Approach 2:
The mounting plate appears to be constructed from high-strength material that combines rigidity for stable mounting with toughness to resist cracking under repeated stress. This composite approach allows the structure to maintain stability while withstanding the cumulative effects of forced entry attempts over time.
Data Source
AI summary
A deadbolt door locking apparatus for a side hinged door is provided that includes a deadbolt having a longitudinal axis. The deadbolt has a handle protruding therefrom. A housing for the deadbolt has an aperture external face. The handle slides in the aperture between an extended position with the deadbolt overlying the door, and a retracted position with the deadbolt clear of the door. The housing has a first wall and a second wall that together bound the deadbolt and connecting the external face to a door frame mounting plate. A mounting plate having a cut-out adapted to receive a door latch extending from the door into a door jamb is provided that is integral with the housing and extending perpendicular therefrom. The mounting plate has a length of at least twice the extended position of the deadbolt.