Window Fitting Sensor Decoupling for Retrofit Installation
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Solution Overview
Problem
Existing window fitting arrangements for sash frames are complex to install, particularly during retrofitting, and lack efficient non-contact position detection methods for drive rods and locking mechanisms.
Innovation Solution
A fitting arrangement with a signal generator arrangement that engages the drive rod form-fittingly and is decoupled from the sensor device, allowing for reliable non-contact position detection using a sensor device attached to the faceplate or sash frame, enabling wireless communication and low energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor device is directly coupled to the drive rod, then the position detection is reliable, but the installation complexity increases and retrofitting becomes difficult
Solution Approach 1:
The system is divided into two independent parts: a sensor device that remains stationary and a signal transmitter that moves with the drive rod. This segmentation allows the sensor to be pre-installed on the frame while the transmitter is attached to the moving component, simplifying retrofitting while maintaining detection reliability through the separation of sensing and actuation functions.
Solution Approach 2:
A magnetic field serves as an intermediary between the stationary sensor device and the moving signal transmitter. The magnetic field transmits position information without requiring physical coupling, enabling reliable non-contact detection while avoiding the mechanical complexity and installation difficulties associated with direct sensor-to-drive-rod coupling.
2Ease of operation
If contactless position detection is implemented, then installation is simplified and energy consumption is reduced, but detection precision may be compromised
Solution Approach 1:
The mechanical coupling between sensor and drive rod is replaced with a magnetic field-based detection system. The signal transmitter generates a magnetic field that the sensor detects, eliminating the need for direct mechanical contact while maintaining sufficient detection precision for monitoring drive rod position in window fitting applications.
3Ease of manufacture
If a magnetic coupling between sensor and drive rod is used, then installation is simplified, but mounting tolerance compensation becomes more difficult
Solution Approach 1:
The magnetic field acts as a flexible intermediary that can accommodate mounting tolerances. The magnetic coupling between the signal transmitter and sensor allows for greater positional variability compared to direct mechanical coupling, as the magnetic field can be detected over a range of distances and angles, simplifying installation while maintaining detection functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates simple and rapid installation of the sensor device, provides reliable non-contact position detection of drive rod positions, and ensures low energy consumption, making it suitable for retrofitting and efficient operation.
Implementation Method 1
a signal transmitter arrangement (24) associated with the drive rod (6) and designed to interact with the sensor arrangement (17) in a contactless manner
Implementation Method 2
a sensor device (15) with a sensor arrangement (17) arranged in a sensor housing (16) and having at least one position sensor (18)
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a fitting assembly (5) for a leaf frame (4) of a window (1), comprising a fitting part (3), which has a cover rail (11) that is secured to the leaf frame (4) and a drive rod (6) that is movably mounted relative to the cover rail (11), and a sensor device (15) with a sensor assembly (17), which is arranged in a sensor housing (16) and has at least one position sensor (18). The sensor device (15) lies against the cover rail (11) in an uncoupled manner from the drive rod (6) and is secured or can be secured directly to the cover rail (11) and/or the leaf frame (4). The invention further relates to a window (1), to a method for operating a fitting assembly (5), to a method for installing a fitting assembly (5), and to a sensor device (15).