Sliding Door Locking Unit With Electromechanical Actuation
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Solution Overview
Problem
Existing sliding door systems face challenges in ensuring precise locking after a very short sliding distance, particularly in maintaining a zero opening gap between door leaves, and existing locking systems often rely on rod locking mechanisms which may not provide optimal response characteristics.
Innovation Solution
A sliding door system incorporating a drive device with a driven pulley connected to a rotational body and an electromechanical actuation device, where the rotational body is torque-proofly linked to the pulley and features locking components that engage or disengage with a displaceable locking bolt for precise locking, even after minimal sliding, using a locking disc and bistable electromagnet for reliable actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rod locking system is used, then the locking mechanism is simple, but the response characteristics are poor and cannot achieve effective locking after very short sliding distance
Solution Approach 1:
The locking system is segmented into distinct functional components: a rotational body with locking components that rotates with the driven pulley, and a separate displaceable locking bolt in the transom. This segmentation allows the locking action to be decoupled from the sliding motion, enabling rapid locking response even after minimal sliding distance while maintaining structural simplicity.
Solution Approach 2:
The locking components are pre-positioned on the rotational body at specific angular positions. When the driven pulley rotates even a small amount, the locking components are already in position to engage with the locking bolt, enabling preliminary locking action before the door has traveled far. This eliminates the need for long sliding distances required by rod locking systems.
2Measurement precision
If the locking system uses a tappet with continuous toothed belt, then the locking can be actuated, but the opening gap control between door leaves is not precise
Solution Approach 1:
The locking control receives feedback about the door position and sliding distance, and uses this information to determine when to actuate the electromechanical locking device. The system monitors the rotation of the driven pulley and triggers locking at the precise moment when the locking components align with the locking bolt, ensuring accurate opening gap control while maintaining simple electromechanical actuation.
3Reliability
If the rotational body is torque-proofly connected to the driven pulley, then the locking components engage reliably, but the system complexity increases
Solution Approach 1:
The rotational body is merged with the driven pulley through a torque-proof connection, combining the driving function of the pulley with the locking function of the rotational body. This integration ensures that the locking components on the rotational body reliably engage with the locking bolt while avoiding the need for separate complex transmission mechanisms. The connection merges power transmission and locking actuation into a single unified structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables effective locking with minimal sliding distance, ensuring no gap between door leaves and providing reliable locking and unlocking functionality, adaptable to wear and maintenance, with enhanced response characteristics and secure positioning.
Implementation Method 1
an electromechanical actuation device, wherein the electromechanical actuation device is operable to cause the locking bolt to interlock with the coupling member
Implementation Method 2
A driven pulley, preferably formed as a toothed disc, of the drive device effecting the sliding movement of the door leaf, according to the invention, is torque-proofly connected to a rotational body
Data Source
AI summary
A sliding door system including a transom; at least one door leaf movable along the transom; an endless traction mechanism traction-resistantly connected to the at least one door leaf; a drive device for driving the endless traction mechanism, the drive device comprising a driven pulley guiding the endless traction mechanism; a rotational body torsion-resistantly connected to the driven pulley and rotatably supported by the transom, the rotational body comprises a coupling member; a locking bolt displaceably supported by the transom; and an electromechanical actuation device. The electromechanical actuation device is operable to cause the locking bolt to interlock with the coupling member of the rotational body to lock the at least one door leaf relative to the transom.