Turn Tilt Window Hinge Multi-Link Mechanism
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Solution Overview
Problem
Existing turn/tilt window systems face challenges in achieving a structurally simple yet robust design that can withstand high loads while maintaining a compact structure, and they lack efficient mechanisms for controlling the tilt and turn movements.
Innovation Solution
The design incorporates a turn/tilt fitting arrangement with a multi-link mechanism, including swivel/tilt corner bearings, locking rod fittings, and an adjusting device with an electromotive drive, allowing for smooth transition between closed, tilt, and rotary control positions, ensuring high operational reliability under heavy loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a robust mechanism is used to withstand high loads, then the strength and reliability are improved, but the device complexity and size increase
Solution Approach 1:
The fitting arrangement is divided into modular components: corner bearings for pivot support, scissor stays for structural reinforcement, and locking bar fittings for position control. Each module independently handles specific load types, allowing the system to achieve high strength without monolithic complexity
Solution Approach 2:
The scissor stay mechanism is nested within the corner bearing assembly, with links and joints integrated into the existing structural framework. The locking bar fitting is nested within the scissor stay mechanism, allowing multiple functional elements to occupy overlapping spatial envelopes, thereby reducing overall device complexity while maintaining load-bearing capacity
2Volume of moving object
If a compact design is implemented, then the volume is reduced, but the ability to withstand high loads may be compromised
Solution Approach 1:
The scissor stay links are arranged in a folded, multi-dimensional configuration that collapses into a compact form when retracted. The links extend in multiple directions rather than linearly, allowing the mechanism to achieve full operational length for load-bearing while maintaining a compact retracted volume within the window frame
Solution Approach 2:
The fitting components utilize composite construction with high-strength materials concentrated in critical load-bearing zones (joint axes, connection points) while less critical areas use lighter materials. This allows the compact structure to maintain adequate strength through strategic material distribution rather than uniform reinforcement
3Device complexity
If a simple design is used, then the device complexity is reduced, but the operational reliability under high loads decreases
Solution Approach 1:
The locking bar fitting automatically engages and disengages control positions through its own movement along the scissor stay, without requiring separate actuating mechanisms. The coupling slide automatically locks into position based on the scissor stay's geometric configuration, providing fail-safe positioning that enhances reliability while maintaining simplicity
Solution Approach 2:
The control function is merged with the structural scissor stay mechanism itself. The locking bar fitting uses the scissor stay's motion to automatically control the window's tilt and turn positions, eliminating the need for separate control linkages and reducing overall complexity while improving reliability through integrated functionality
Data Source
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AI summary
A tilt-and-turn window (1) comprising a frame (2) that can be permanently installed in a wall opening of a building wall and a sash (3) that is movable relative to the frame about a tilt axis (X-axis) into a tilt-open position and about a rotation axis (Y-axis) perpendicular to the tilt axis (X-axis) into a turn-open position, and a tilt-and-turn hardware arrangement (4), is characterized in that a tilt-and-turn stay (6) comprises a multi-link arrangement with a link, in particular a main link (621), which couples the sash frame (31) and the frame (2) when the sash is moved into the tilt-open position, on which a coupling slide (65) is arranged, which can be moved by the locking rod fitting into different sliding positions on this link, in particular on the main link (621), in order to at least engage the tilt-and-turn stay (6) between the Closed tax position,to switch between the tilt control position and the rotary control position of the rotary/tilt scissor mechanism (6).