Door Rosette Plate Radial Locking Mechanism
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Solution Overview
Problem
Existing devices for detachable axial fixing of handle bearing sections require additional tools for actuating the locking slide, making them less user-friendly and potentially vulnerable to unauthorized access.
Innovation Solution
Incorporating an actuating element, such as a cover plate with a control pin, that allows radial displacement of the locking slide without the need for additional tools, enabling easy manual operation and enhanced security through rotational actuation and latching mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking slide is used for axial fixing of the bearing section, then reliable detachable fixing is achieved, but additional tools are required for actuation which complicates operation
Solution Approach 1:
The actuating element is integrated directly into the bearing unit, merging the actuation function with the fixing mechanism. The control pin of the actuating element engages with the control link of the locking slide, allowing the user to actuate the locking slide directly without requiring separate external tools.
Solution Approach 2:
The bearing unit becomes self-sufficient by incorporating the actuating element with control pins that directly interact with the locking slide's control links. The system serves itself by providing all necessary components for both locking and actuation within the same assembly, eliminating dependency on external tools.
2Ease of operation
If the actuating element is integrated into the bearing unit, then tool-free operation is achieved, but the device structure becomes more complex
Solution Approach 1:
The actuating element is designed as a separate component with its own control pins that can be independently manufactured and then assembled into the bearing unit. This segmentation allows for modular manufacturing and assembly, reducing overall complexity despite the added functionality.
Solution Approach 2:
The control link acts as an intermediary mechanism between the actuating element's control pin and the locking slide. This intermediary component translates the rotational motion of the actuating element into the radial displacement of the locking slide, providing a clear mechanical interface that simplifies the overall design.
Data Source
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AI summary
The device (10) has a bearing unit comprising bolt sliders (22A, 22B) that are radially adjustable between a blocking position and a release position, and engaged in an angular groove for axially fixing a bearing section of a door handle. The bearing unit comprises a cover (26), and the bolt sliders are radially adjusted by the cover. The bolt sliders comprise control guides that are intervened between control pins of the cover. The cover is operated by rotating around an axle of the bearing section. A guide plate (20) is provided for the bolt sliders.