Twisted Door Closer Lever Interfaces for Flexible Installation
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Solution Overview
Problem
Existing door closing linkages are inflexible and installation can be complex, requiring adaptation of the door closer or its shaft to the coupling element, limiting their versatility and ease of use.
Innovation Solution
The coupling interfaces of the door closing lever are arranged in a twisted position relative to each other, allowing for different angles and orientations, enabling versatile use with various door closers and simplifying installation through a plug-in design with positive-locking connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the coupling interfaces are arranged in a twisted position relative to each other, then adaptability and flexibility are improved, but device complexity increases
Solution Approach 1:
The coupling interfaces are arranged asymmetrically in a twisted position relative to each other on the door closing lever. This asymmetric arrangement allows the lever to accommodate coupling elements at different angles and orientations, providing adaptability to various door closer configurations without requiring multiple specialized lever designs.
Solution Approach 2:
The door closing lever with twisted coupling interfaces serves multiple functions: it can connect to door closers with different shaft orientations, accommodate varying installation situations, and work with different headroom depths. This universal design eliminates the need for multiple specialized lever variants.
2Reliability
If the door closer or shaft must be adapted to the coupling element, then connection reliability is improved, but ease of operation deteriorates
Solution Approach 1:
Instead of adapting the door closer or shaft to match the coupling element, the invention inverts the approach by designing the coupling interfaces on the lever to actively accommodate various door closer configurations. The lever becomes the adaptive component rather than requiring modification of the door closer.
Solution Approach 2:
The twisted arrangement of coupling interfaces allows the lever to accommodate different angular parameters and orientations of door closer shafts. By changing the spatial parameters of the coupling interfaces, the system can adapt to various installation configurations without modifying the door closer itself.
Data Source
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AI summary
The invention relates to a door closing linkage (10) for a door closing device (100) with a door closing lever (1), a first coupling element (2) for coupling the door closing lever (1) with a door closer (20) and a second coupling element (3) for coupling the door closing lever (1) with a slide rail (30), wherein the door closing lever (1) has a first and a second coupling interface (1.1, 1.2) for connection with the first or the second coupling element (2, 3), wherein the two coupling interfaces (1.1, 1.2) of the door closing lever (1) are arranged rotated relative to each other.