Lock Hardware Box With Extended Door-Sash Protrusions
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Solution Overview
Problem
Conventional screen door latches and locks are limited in size and robustness due to their mounting within the door sash, compromising security.
Innovation Solution
A lock hardware box with a frame that extends around the perimeter of the door sash, featuring chambers for latching and locking mechanisms, and protrusions for secure fitting, along with cover plates for protection, allowing for robust installation independent of sash size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If latches and locks are mounted within the door sash, then the door structure remains simple, but the robustness and security of the locking system deteriorates
Solution Approach 1:
The locking system is segmented into separate functional components: a hardware box mounted on the door sash that contains both the latching mechanism and locking mechanism. This segmentation allows the locking system to be more robust while maintaining door structure simplicity, as the hardware box is a distinct module rather than an integrated complex structure.
Solution Approach 2:
The hardware box serves as an intermediary component between the door sash and the locking mechanisms. It provides a dedicated mounting structure that enhances the robustness of the locking system without requiring complex modifications to the door sash itself, thus resolving the contradiction between strength and complexity.
2Strength
If latches and locks are mounted within the door sash, then installation is straightforward, but the size and robustness of the locking system are limited by sash size
Solution Approach 1:
The locking system is divided into a separate hardware box that can be manufactured independently of the door sash. This allows the hardware box to be optimized for maximum robustness without being constrained by sash dimensions, while still maintaining ease of installation through a standardized mounting interface.
Solution Approach 2:
The hardware box extends the locking system into a third dimension by mounting it on the exterior surface of the door sash rather than embedding it within the sash thickness. This dimensional transition allows the locking system to achieve greater size and robustness while keeping the door sash structure simple and easy to manufacture.
3Reliability
If conventional latches and locks are used within the sash, then the door remains simple in design, but security is compromised
Solution Approach 1:
The security system is segmented into a dedicated hardware box that contains both latching and locking mechanisms. This segmentation allows for enhanced security through a more robust hardware box design while keeping the door itself simple, as the hardware box is a separate module that can be independently optimized for security without complicating the door structure.
Solution Approach 2:
The hardware box merges both the latching mechanism and locking mechanism into a single integrated unit. This combination provides enhanced security by consolidating multiple security functions into one robust structure, while the hardware box itself remains a relatively simple device that does not significantly increase overall door design complexity.
Data Source
AI summary
A security lock hardware box is provided for installation in a door sash. The lock hardware box is installed in a door sash for receiving locking hardware. It has a body part having first chamber for receiving a door latching mechanism, and a second chamber for receiving a door locking mechanism. Front and rear cover plates securable over the front and rear face of the body part with respective openings and holes to receive the locking and latching mechanisms. The body part has protrusions for fitting within the door sash, the length of which can be greater to provide greater strength and security regardless of the size of the lock hardware box or the size of the door sash that can accommodate the lockbox.