Corner Deflector with Undercut Groove for Window Casement
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Solution Overview
Problem
The installation and removal of corner deflection means in window or door casement systems are often problematic due to their angular design, making it difficult to insert and remove them in the corner region of the casement/leaf, especially when using the frontal installation method which requires a large number of components and is costly.
Innovation Solution
The corner deflection means is designed with an undercut-free second longitudinal side and a pivotably mounted pivot lever that can be moved between a securing and disengagement position, allowing for straightforward insertion and secure fixation within the C-shaped casement/leaf groove, preventing unintended disengagement and tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If corner deflection means is installed using frontal installation method, then installation accessibility is improved, but device complexity increases due to requiring a large number of components
Solution Approach 1:
The patent combines multiple functions into a single integrated corner deflection means that can be installed frontally. The corner deflection means integrates the deflection function, securing mechanism (via undercut), and positioning features into one component, eliminating the need for multiple separate components required by traditional frontal installation methods.
Solution Approach 2:
The corner deflection means is designed with a segmented structure featuring an undercut on one longitudinal side, allowing it to be inserted frontally and then secured by engaging the undercut with the groove limb. This segmentation enables the single component to achieve both insertion and securing functions without requiring multiple parts.
2Reliability
If corner deflection means has angular design with undercut for securing, then securing reliability is improved, but ease of installation deteriorates due to difficulty in insertion and removal
Solution Approach 1:
Instead of designing the securing mechanism to prevent insertion, the patent inverts the approach by designing an undercut that initially allows easy frontal insertion. The undercut is positioned such that during insertion, the groove limb passes over it, and only after positioning does the undercut engage to provide securing. This inversion enables both easy installation and reliable securing with a single component.
3Adaptability or versatility
If corner deflection means is designed to be removable for replacement, then adaptability is improved, but stability of installation deteriorates due to risk of unintended disengagement
Solution Approach 1:
The patent employs a dynamic securing mechanism where the undercut engagement with the groove limb provides automatic locking after insertion. The design allows the corner deflection means to be easily inserted frontally, then automatically secures itself through the undercut-groove limb engagement, preventing unintended disengagement while maintaining replaceability when intentionally removed.
Data Source
AI summary
A corner deflector of a fitting for a window casement or a door leaf, insertable into a C-shaped casement/leaf groove in the rebate of a frame profile of the casement/leaf. The corner deflector having a first corner limb and a second corner limb at right angles to the first corner limb. A groove for a limb of the casement/leaf groove, the limb groove having an undercut, is provided on a first longitudinal side of the first corner limb and/or of the second corner limb. The region of the second longitudinal side of the first and/or second corner limb which is located opposite the undercut of the first longitudinal side is undercut-free. At least one securing element is provided on the second longitudinal side, which can be moved relative to the second longitudinal side between a securing position and a disengagement position.