Window Fitting Variable Coupling Mechanism
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Solution Overview
Problem
Existing fitting arrangements for windows and doors that can be rotated and tilted about two axes face challenges in compact design and flexible arrangement of pivoting elements and locking parts, particularly when manufacturing miter-welded frames, as they require complex mechanisms to lock and stabilize the sash in multiple positions.
Innovation Solution
A fitting arrangement with a drivingly effective coupling mechanism that reverses the direction of the pivot point's movement in different adjustment ranges, allowing the pivoting element to use a single locking element that engages in a single blocking receptacle for both locking and stabilization, and utilizing a variable coupling rod system with toothed sections to achieve co-rotating and counter-rotating couplings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the pivoting element is arranged close to the tilt opening axis corner, then the pivoting element length is reduced and material is saved, but the arrangement becomes disruptive during manufacture of miter-welded frames
Solution Approach 1:
The patent applies dynamics by making the coupling between the connecting rod and pivoting element variable rather than fixed. The coupling mechanism can change its geometric relationship during operation, allowing the pivoting element to achieve its compact positioning while maintaining manufacturability. This dynamic coupling enables the system to adapt its configuration to resolve the contradiction between compact size and ease of manufacture.
2Device complexity
If a single locking element is used instead of multiple locking elements, then the device complexity is reduced, but the mechanism must achieve both locking and stabilization functions with fewer components
Solution Approach 1:
The patent applies universality by designing a single locking element that performs multiple functions: it acts as both a locking element for securing the closed position and a stabilizing element for maintaining the tilted open position. This multi-functional design reduces the number of components while maintaining the necessary functional versatility through the variable coupling mechanism that enables the single element to adapt to different operational requirements.
3Length of moving object
If the coupling mechanism provides opposite direction driving in one range and same direction driving in another range, then the pivoting element achieves compact displacement, but the coupling mechanism becomes more complex
Solution Approach 1:
The patent applies dynamics by implementing a variable coupling mechanism that changes its driving direction characteristics based on the operational range. In a first adjustment range, the coupling provides opposite direction driving to achieve compact pivoting element displacement, while in a second adjustment range, it provides same direction driving. This dynamic variation in coupling behavior enables compact dimensions while managing the inherent complexity through adaptive control.
Data Source
AI summary
A hardware arrangement for windows, doors, or the like, comprising a frame and a sash, includes a drive rod that can be arranged longitudinally on one side of the sash and a pivot element that can be pivoted about a pivot point. The pivot point is coupled to the drive rod for actuation purposes and can be adjusted by means of the drive rod from a closed position through a turn-open position to a tilt-open position, and vice versa. The pivot element has a locking element, in particular a pin, spaced apart from the pivot point. This locking element is designed to engage in a respective blocking receptacle of an associated locking component on the frame in both the closed and tilt-open positions of the pivot point.The drive-effective coupling of the pivot point with the connecting rod is effective in the opposite direction in a first positioning range between the closed position and the rotary opening position, and in the same direction in a second positioning range between the rotary opening position and the tilting opening position, or vice versa.