Concealed Electric Door Lock Drive Unit
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Solution Overview
Problem
Existing door assemblies with electrically driven locking systems are vulnerable to unauthorized access and damage due to their visible and accessible components, which also result in a bulky appearance.
Innovation Solution
The door assembly incorporates an electrically driven drive unit positioned within the door leaf's thickness, either adjacent to the lock case or on one of its surfaces, providing a concealed arrangement that prevents manipulation and damage, while maintaining a simple visual appearance by housing the drive components within the door leaf.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electrically driven drive unit is positioned outside the door leaf, then the drive unit is easily accessible for installation and maintenance, but it becomes vulnerable to unauthorized manipulation and damage while creating a bulky visual appearance
Solution Approach 1:
The electrically driven drive unit is nested within the door leaf thickness, positioned in a recess or cavity inside the door leaf. This nesting approach protects the drive unit from external manipulation while maintaining a clean external appearance, resolving the contradiction between accessibility and protection.
Solution Approach 2:
The drive unit is relocated from a traditional external position to an internal position within the door leaf's thickness dimension. This dimensional repositioning allows the drive unit to be accessed through the door leaf structure during installation while being protected when the door is in normal use.
2Ease of manufacture
If the electrically driven drive unit is positioned outside the door leaf, then installation is simplified, but the visual appearance becomes bulky and complex
Solution Approach 1:
The drive unit is nested within the door leaf's internal structure, concealing it from external view. This maintains a sleek, simple visual appearance while the drive unit remains functional and accessible through the door leaf structure during installation and maintenance.
Solution Approach 2:
The door leaf structure incorporates a recess or cavity that accommodates the drive unit, allowing the external surface to remain smooth and aesthetically pleasing while providing internal space for the mechanical components.
3Reliability
If the drive unit is completely concealed within the door leaf, then protection against manipulation is maximized, but accessibility for maintenance and repair is reduced
Solution Approach 1:
The door leaf structure is segmented to include accessible openings or removable panels that provide access to the drive unit for maintenance while maintaining concealment during normal operation. This segmentation allows authorized personnel to access the drive unit while keeping it protected from unauthorized manipulation.
Solution Approach 2:
An intermediary access mechanism such as a removable cover panel or service opening is provided, which allows authorized maintenance personnel to access the drive unit while keeping it concealed and protected during normal door operation.
Data Source
AI summary
The invention relates to a door assembly (1) comprising a door frame (4), a door leaf (6), and a locking system (21) having a door lock (22) and having a drive assembly (25) with an electrically driven drive unit (26) and with an electrical energy source (27). The door lock (22) has a lock case (23) and a locking and/or blocking mechanism (24). The electrically driven drive unit (26), as viewed in the direction of the door leaf thickness (16), is arranged laterally next to and either directly adjacent to the lock case (23) or in the region of a door leaf surface (14, 15) on the door leaf (6), and has a mechanical drive connection with the locking and/or blocking mechanism (24) of the door lock (22).