Continuous Window Handle Pivoting for Latch Access
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Solution Overview
Problem
Existing window designs lack an efficient mechanism for unlocking and relocking sashes without requiring users to manually hold open handles, complicating cleaning and removal processes.
Innovation Solution
A continuous handle that pivots along the length of the upper rail, allowing for easy unlocking and relocking of sashes by moving from a lowered to a raised position, exposing the surface for cleaning and providing a secure locking mechanism when closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional handle mechanism is used, then the sash can be locked securely, but the handle must be manually held open during cleaning and removal operations
Solution Approach 1:
The handle is designed to pivot between a lowered position (for cleaning/removal access) and a raised position (for locking). This dynamic positioning allows the handle to adapt its orientation based on operational needs, eliminating the requirement for manual holding during maintenance operations while maintaining secure locking capability when raised.
Solution Approach 2:
The continuous handle is divided into multiple segments or sections that can pivot relative to each other. This segmentation allows the handle to change its configuration from a closed position that engages the lock to an open position that exposes the pivot latches, providing both security and accessibility without requiring manual support.
2Ease of operation
If the handle is moved to expose the surface for cleaning, then access to pivot latches is improved, but the locking security may be compromised
Solution Approach 1:
The handle pivots between distinct positioned states: a lowered position that exposes the pivot latches for cleaning and maintenance access, and a raised position that engages the locking mechanism. The dynamic transition between these states ensures that accessibility and security are not mutually exclusive but rather complementary functions achieved at different operational moments.
Solution Approach 2:
The continuous handle acts as an intermediary mechanism that mediates between the locked and accessible states. By pivoting, it selectively engages or disengages the lock while simultaneously controlling access to the pivot latches, ensuring that security is maintained when closed and accessibility is provided when open, without compromising either function.
3Shape
If a continuous handle extending along the rail is used, then the surface appearance is maintained when closed, but the mechanism for unlocking becomes more complex
Solution Approach 1:
The continuous handle merges aesthetic function with mechanical function. When in the closed position, it presents a clean, uninterrupted surface that maintains the visual appearance of the rail. When pivoted open, it provides the unlocking function. The continuous design integrates both cosmetic and operational roles into a single element, reducing the need for separate decorative covers or additional mechanical components.
Solution Approach 2:
The continuous handle serves multiple functions: it acts as a cosmetic cover maintaining surface appearance, a locking mechanism when raised, and an access tool for pivot latches when lowered. This multi-functionality eliminates the need for separate components for each function, simplifying the overall design despite the sophisticated operational requirements.
Data Source
AI summary
A window assembly includes a first sash having a first rail having a longitudinal axis extending between a first end and an opposite second end. A continuous handle extends along the length of the first rail and is pivotally connected to the first rail between a lowered first position and a second raised position.