Roof Window Deadbolt Socket Assembly Break-in Resistance
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Solution Overview
Problem
Existing roof window deadbolt socket assemblies, particularly those made of plastic, lack sufficient break-in resistance due to low mechanical strength, and known solutions like metal braces can be ineffective if the plastic components bend, allowing the deadbolt to be pulled out using a crowbar or similar tools.
Innovation Solution
A deadbolt socket assembly with a reinforced structure, featuring a brace made of higher mechanical strength material, connected to the deadbolt socket with a kinematic connection that allows limited rotational movement around a fixed axis, preventing the deadbolt from being pulled out by generating a turning moment when excessive force is applied, and utilizing a quasi-rotary kinematic pair for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic deadbolt socket is used, then aesthetic appearance is improved, but break-in resistance deteriorates due to low mechanical strength
Solution Approach 1:
The deadbolt socket assembly combines a plastic deadbolt socket with a metal brace supporting element. The plastic socket provides aesthetic appearance while the metal brace provides high mechanical strength and break-in resistance, creating a composite structure that resolves the contradiction between appearance and strength.
2Strength
If a metal brace is added to reinforce the deadbolt socket, then break-in resistance is improved, but device complexity increases
Solution Approach 1:
The metal brace is integrated with the plastic deadbolt socket through connection elements such as screws, rivets, or press-fit mechanisms. This merging of components creates a unified assembly where the brace reinforces the socket without requiring separate mounting structures, thereby reducing overall device complexity while maintaining high break-in resistance.
3Stability of the object's composition
If the brace is fixed rigidly to the frame, then structural stability is improved, but the ability to resist bending forces deteriorates when plastic components bend
Solution Approach 1:
The connection between the brace and deadbolt socket allows for controlled movement or deformation when bending forces are applied. This dynamic response enables the assembly to absorb and dissipate bending forces without compromising the overall structural stability or the effectiveness of the deadbolt engagement.
4Ease of manufacture
If additional fixing elements like dovetails or horns are added, then manufacturing simplicity is maintained, but break-in resistance remains low due to plastic material limitations
Solution Approach 1:
Instead of relying solely on plastic fixing elements like dovetails or horns, the invention introduces a metal brace as a composite material component. This metal element provides the necessary mechanical strength for break-in resistance while the plastic socket and its simple fixing elements maintain manufacturing simplicity.
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 solution significantly enhances break-in resistance by ensuring the deadbolt remains in the socket even when the window sash is bent or shifted, maintaining the window in a closed position and preventing unauthorized opening.
Implementation Method 1
the pressure of the handle deadbolt, counterbalanced by the reactive force of the working surface of the deadbolt recess supported by the brace arm, generates a moment of force leading to a bending of the brace arm
Implementation Method 2
a protrusion in the deadbolt, seated in the socket immersed in the deadbolt-adjacent surface... during an attempt to force in the window sash from the outside, the deadbolt takes the deadbolt socket along with itself, rotating it around the fixing point of the brace
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The invention relates to a deadbolt socket immersed in the frame, supported with a brace fixed in a recess, the brace and the deadbolt socket being preferably connected with one another after assembling in the frame, and having a common possibility of a limited rotational movement around an axis away from the deadbolt and fixed in the frame, after exceeding a fixed limit moment of force acting in the direction of pulling the deadbolt socket out of the recess.