Convex Stopper Locking Device for Pivoting Hardware
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Solution Overview
Problem
Existing door and window locking devices cause damage through screw connections and become dirty due to the actuation mechanism, leading to operational issues.
Innovation Solution
A locking device with a fastening unit that attaches to the edge of a pivoting device, featuring a pivoted actuating unit with a convex stopper element that engages with an abutment without applying force in the opening or closing direction, designed to prevent displacement without causing damage or dirt accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw connection is used to fasten the locking device to the door or window, then the device can be securely attached, but it causes damage in the form of drilled holes
Solution Approach 1:
The patent removes the fastening elements (screws) from the door or window structure entirely. Instead, the fastening unit is self-contained with a fastening area that attaches to the edge of the pivoting device without penetrating it, thereby extracting the harmful drilling action from the system while maintaining secure attachment.
Solution Approach 2:
The locking device is divided into separate functional units: a fastening unit with its own fastening area, and an actuating unit with the stopper element. This segmentation allows the fastening mechanism to be independent of the door/window structure, avoiding damage while providing secure attachment through the edge-facing surface.
2Reliability
If a door arrester is attached to the door leaf, then the locking function is provided, but areas around the door arrester become dirty due to actuation
Solution Approach 1:
The fastening unit attaches to the edge of the door or window (a different spatial dimension compared to surface-mounted arresters), positioning the actuating unit away from the main surface areas. This dimensional relocation prevents dirt accumulation on the door leaf while maintaining the locking function through the stopper element's engagement with the abutment.
3Reliability
If the stopper element is designed with a convex bearing surface, then engagement with the abutment is improved, but the mechanism becomes more complex
Solution Approach 1:
The stopper element features a convex bearing surface (curved geometry) that provides reliable engagement with the abutment. This curvature allows for self-aligning contact and distributed force distribution, improving engagement reliability while the overall mechanism remains relatively simple through the use of basic geometric forms.
Data Source
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AI summary
Device for locking a pivotable device, such as a door, a window or the like, comprising a fastening unit with a fastening area for fastening the device to an edge of the pivotable device, an actuating unit which is pivotably or rotatably mounted in a pivot plane on a fastening unit bearing area of the fastening unit, wherein the actuating unit has a stopper element, wherein the stopper element has a bearing surface which is convexly curved in or along the pivot plane.