Sliding Fenestration Locking Across Adjustable Sash Heights
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Solution Overview
Problem
Existing fenestration locking systems become ineffective when the movable sill is adjusted in height, requiring uninstallation and reinstallation, which is time-consuming and burdensome, and they obstruct access to adjustment ports for tools.
Innovation Solution
A locking system that allows the movable sash to be locked to a fixed sash assembly in multiple positions without repositioning lock counterparts, enabling adjustment of the movable sill's height while maintaining lock functionality and allowing tool access to adjustment mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing locking systems are installed on the movable sill, then the movable sill can be locked to the fixed sill in a particular relative configuration, but the locking system becomes ineffective when the height of the movable sill is adjusted
Solution Approach 1:
The locking system is designed to be dynamic rather than static. The lock counterpart on the movable sill and the corresponding lock mechanism on the fixed sill are configured to automatically engage at multiple predetermined height positions. When the movable sill is adjusted vertically, the locking mechanism detects the new position and engages accordingly, maintaining reliability across different configurations without requiring manual repositioning or uninstallation.
2Reliability
If existing locking systems are installed over the access port of the movable sill, then the movable sill can be locked, but tool access to adjust the height of the movable sill is obstructed
Solution Approach 1:
The locking system is segmented from the access port area. The lock counterpart is positioned on the movable sill in a location that does not obstruct the access port, allowing tools to reach through the access port to adjust the height while the locking mechanism remains functional. This spatial segmentation enables both locking functionality and tool access to coexist without interference.
3Reliability
If the existing locking system is uninstalled and reinstalled after height adjustment, then the locking system can function with the new configuration, but the process is time-consuming and burdensome
Solution Approach 1:
The locking system is pre-configured with multiple engagement positions and automatic engagement capabilities. Before any height adjustment occurs, the locking mechanism is designed to accommodate various positions. When the movable sill is adjusted, the locking system automatically adapts to the new position without requiring uninstallation or reinstallation, saving significant time and effort while maintaining reliable locking functionality.
Data Source
AI summary
Disclosed herein is a fenestration assembly. The assembly includes a movable sash assembly, a first lock counterpart connected to the movable sash assembly, a fixed sash assembly, a second lock counterpart connected to the fixed sash assembly, and a sill configuration. While the fixed sash assembly is mounted to the sill configuration, and while the movable sash assembly is mounted to the sill configuration at a first height, the movable sash assembly is lockable to the fixed sash assembly. While the fixed sash assembly is mounted to the sill configuration, and while the movable sash assembly is mounted to the sill configuration at a second height, the movable sash assembly is lockable to the fixed sash assembly. While there is an absence of locking between the movable and fixed sash assemblies, the movable sash assembly is movable relative to the sill configuration.