Door Fitting Actuating Shaft with Visual Indicator and Manual Override
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Solution Overview
Problem
Existing fittings for doors and windows lack a clear indication of the bolt actuating device's switching position during both manual and motorized operation, and they are not designed for inconspicuous, concealed installation.
Innovation Solution
The actuating shaft is connected to a motorized power drive and a manually operable connecting rod drive, with a visual display device mounted coaxially to the drive pinion, allowing for simplified assembly and emergency actuation, and featuring a cover with orthogonally offset openings to conceal the tool grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a motorized power drive is used to operate the bolt actuating device, then automation and convenience are improved, but the ability to perform emergency manual actuation is compromised
Solution Approach 1:
A tool grip is provided on the actuating shaft that serves as an intermediary element, allowing manual operation tools to engage with the motorized system's actuating shaft. This enables emergency manual actuation through the tool grip while maintaining the motorized power drive's normal operation, thus resolving the contradiction between automation and emergency manual capability.
2Shape
If the fitting is designed for concealed installation, then aesthetics and inconspicuous installation are improved, but the visibility of the tool grip for emergency actuation is reduced
Solution Approach 1:
The tool grip acts as an intermediary element that can be concealed within the fitting's housing during normal operation, maintaining aesthetic appearance. When emergency manual actuation is required, the tool grip becomes accessible through a designated opening or access point, thus resolving the contradiction between concealed installation and emergency accessibility.
3Loss of information
If a visual display device is added to indicate the switching position, then operational clarity is improved, but device complexity increases
Solution Approach 1:
The actuating shaft serves multiple functions: it is the primary actuator for the bolt actuating device, the mounting axis for the visual display device, and the engagement point for emergency manual tools. By making the actuating shaft universal and multi-functional, the visual display device can be integrated without adding significant structural complexity, thus resolving the contradiction between operational clarity and device simplicity.
Data Source
Figure 1~2
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AI summary
The invention relates to a fitting, in particular a door or window fitting, with a manual or motorized drive (16) by means of which various states of a bolt actuation device (10) can be set and a visual indicator device (7, 33) which indicates the switching state of the bolt actuation device (10), wherein the visual indicator device (7, 33) is coupled to the bolt actuation device (10) by means of an actuating shaft (22). In order to be able to carry out manual operation if necessary in the case of a motorized drive (16), it is provided that the actuating shaft (22) is connected to a manually actuated drive device coupled to the bolt actuation device (10), wherein the drive (16) is a motorized power drive and the manually actuated drive device is a connecting rod drive (9) which is passively actuated by the motorized drive (16).The passive drive device can be installed discreetly and preferably largely concealed.