Adjustable Sash Stop for Sliding Windows
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Solution Overview
Problem
Existing sliding sash window stops are not conducive for after-market installation and do not accommodate various window configurations, failing to prevent accidental egress of children effectively.
Innovation Solution
An adjustable safety stop with a multi-walled housing, a pivotally disposed tumbler, and a biasing member that can be easily installed on existing sliding sash windows, allowing for adjustment to different depths and configurations, and limiting sash travel to prevent accidental egress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a window stop is designed for factory installation within a cavity in the manufactured sash window frame, then the window stop can be securely integrated into the window structure, but it cannot be easily installed on existing windows after manufacturing and cannot accommodate various window configurations
Solution Approach 1:
The window stop is divided into separate components: a mounting bracket that attaches to the window frame, a stop body that limits sash travel, and an adjustable mechanism. This segmentation allows the stop to be installed independently on existing windows without requiring cavity modification, while still providing secure integration through the bracket system.
Solution Approach 2:
The mounting bracket is designed with universal attachment capabilities that can accommodate different window frame types and configurations. The bracket includes adjustable mounting holes and adaptable clamping mechanisms that work on various window styles, making the stop suitable for installation on existing windows while maintaining secure integration.
2Reliability
If a window stop is designed to limit sash travel effectively, then child safety is improved, but the window may not provide sufficient ventilation
Solution Approach 1:
The window stop incorporates an adjustable mechanism that allows the stop position to be dynamically changed. The stop can be positioned at different locations along the sash travel path, enabling users to adjust the limitation level based on ventilation needs while maintaining safety. The adjustable design allows the stop to be moved closer to the frame for better safety protection or farther for increased ventilation.
Solution Approach 2:
The stop position parameter can be changed by the user according to their specific needs. The adjustable mechanism allows modification of the stop's location relative to the window frame, changing the parameter of sash travel limitation. This enables optimization between safety (more limitation) and ventilation (less limitation) based on user requirements.
3Reliability
If a window stop requires creation of a cavity in the sash window frame for installation, then the stop can be securely mounted, but the installation process becomes complex and cannot be performed on existing windows
Solution Approach 1:
The cavity creation step is extracted and eliminated from the installation process. Instead of requiring a cavity to be cut into the window frame, the mounting bracket uses alternative attachment methods such as screws, bolts, or clamp mechanisms that secure directly to the existing frame structure. This extraction simplifies the installation process while maintaining secure mounting.
Solution Approach 2:
A mounting bracket serves as an intermediary component between the window stop and the window frame. The bracket provides the attachment interface that secures the stop to the frame without requiring direct modification of the frame itself. This intermediary simplifies installation by using standard fastening techniques rather than requiring cavity creation.
4Adaptability or versatility
If a window stop is designed to be adjustable for different depths, then it can accommodate various window configurations, but the device complexity increases
Solution Approach 1:
The adjustable mechanism is pre-configured during manufacturing with predetermined adjustment positions and a simple adjustment mechanism. The bracket includes pre-drilled holes at different depths and an adjustable stop body that can be positioned at these predetermined locations. This preliminary configuration allows for depth adjustment without requiring complex mechanisms, as the adjustment points are already established during fabrication.
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 enables safe and adjustable installation on various window configurations, effectively preventing accidental egress of children while allowing sufficient ventilation, enhancing safety without requiring modifications to the window frame.
Implementation Method 1
a biasing member (60) that biases the tumbler (40) to pivot out from the housing cavity
Data Source
AI summary
An adjustable stop limits sliding sash window/door travel between a closed position and a safe position, where the safe position is a position less than a full-open position. The stop can be installed upon window/door master frames during initial manufacturing, or as an after-market option while the sash windows/doors are in service in a building. The safety stop may be comprised of a housing and a tumbler being pivotally mounted within a cavity in the housing, with a spring to bias the tumbler out of an opening in the housing. Mounting is by a flange extending from the housing, with spacers of varying thickness that are capable of removably attaching thereon to accommodate sash to master frame height differences. A safety member may be added to either the tumbler or housing to create a double action stop, requiring disengagement of the safety member, prior to toggling of the stop.