Tilting and Rotating Fitting for Façade Elements
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Solution Overview
Problem
Existing façade elements, such as windows and doors, face difficulties in emergency opening during power failures and have slow rotation mechanisms, making manual operation cumbersome and time-consuming, especially for large or inaccessible elements.
Innovation Solution
A rotary tilting fitting system that allows motorized tilting and rotation, with a separate locking mechanism for rapid manual operation, using electronic or hydraulic actuators and a handle that can be removed for safety and ease of use, enabling efficient opening and closing of façade elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized tilting mechanism is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The fitting is divided into separate functional modules: a locking mechanism with locking lever and locking arm, a tilting mechanism with tilting lever and tilting arm, and a rotating mechanism with rotating lever and rotating arm. Each module can be independently actuated, allowing motorized control of tilting without requiring complete automation of all functions, thus balancing ease of operation with manageable device complexity
Solution Approach 2:
The fitting employs dynamic transition between different operational modes (locked, tilted, rotated) through movable levers and arms that can be selectively actuated. The locking lever can disengage to allow motorized tilting, while the rotating lever remains manually operable, creating a dynamic system that adapts its degree of automation based on the required function
2Productivity
If manual rotation mechanism is simplified for quick operation, then productivity is improved, but reliability decreases due to emergency opening difficulties
Solution Approach 1:
The locking mechanism is designed with a preliminary disengagement action where the locking lever can be quickly moved to unlock the locking arm from the locking strike. This preliminary action prepares the system for rapid manual rotation by removing the locking constraint before the rotating lever is actuated, enabling both quick operation and reliable emergency opening
Solution Approach 2:
The locking function is extracted as a separate, independently controllable mechanism from the rotating mechanism. The locking lever and locking arm form a distinct subsystem that can be disengaged without affecting the rotating lever and rotating arm, allowing the rotation mechanism to be simplified for quick operation while maintaining reliability through the separate locking control
3Adaptability or versatility
If multiple positions (locked, tilting, rotating) are integrated in one fitting, then adaptability is improved, but device complexity increases
Solution Approach 1:
The fitting is designed as a universal multi-functional device where a single fitting body integrates three distinct operational modes: locking (via locking lever and locking arm), tilting (via tilting lever and tilting arm), and rotating (via rotating lever and rotating arm). Each mode uses a dedicated lever-arm-strike combination, allowing the same fitting structure to perform multiple functions without requiring separate mechanisms for each operation, thus achieving adaptability while controlling device complexity through standardized modular design
Data Source
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AI summary
To enable motorized tilt opening and closing as well as rapid manual turn opening and closing of a facade element such as a window, door, skylight, flap, etc., the tilt-and-turn fitting according to the invention includes a tilt drive for tilting the sash. The tilt drive comprises a motor and a shear-resistant chain (13) for power transmission between the window and frame. A chain bearing (14) and a positive locking element (15) are provided. The chain and the chain bearing can be connected and disconnected via the positive locking element. A locking piece (10) for locking the sash relative to the frame and a locking drive with a movable follower are provided, wherein the follower is moved when the locking drive is actuated. The follower has a free space so that it can perform a free stroke when the locking drive is actuated.