Sliding Door Locking Mechanism for Power-Failure Emergency Opening
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Solution Overview
Problem
Existing sliding-door systems with electric drives cannot be unlocked or opened during power failures, posing a security risk and hindering evacuation in emergencies.
Innovation Solution
A sliding-door system with a locking mechanism that allows emergency opening by applying an activation force to a specific door leaf, utilizing a rotatable anchor body and latch system to unlock the door mechanically, ensuring the door can be opened from the private side without additional handles or buttons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electric drive is used to unlock the sliding door, then the door can be automatically unlocked during normal operation, but the door cannot be opened during power failures
Solution Approach 1:
The locking system is designed to be self-unlocking through mechanical action. When force is applied to the door leaf, the parallelogram guide system automatically transforms this force into the necessary movement to disengage the latch, eliminating the need for external power or additional unlocking mechanisms.
Solution Approach 2:
The system transitions from a static locked state to a dynamic unlocking state through mechanical force application. The parallelogram guide system dynamically adapts the force vector to achieve unlocking, allowing the door to respond to emergency forces without requiring a separate power-driven actuation system.
2Reliability
If a locking system is implemented to secure the sliding door, then security is improved, but the door cannot be opened from the non-private side during emergencies
Solution Approach 1:
The emergency opening function is localized to the private side of the door. The locking system maintains full security when viewed from the non-private side, while providing a dedicated emergency opening path from the private side through the mechanically actuated parallelogram guide system.
Solution Approach 2:
The door access function is segmented into two independent paths: the normal unlocking path requiring electric drive actuation, and the emergency opening path requiring mechanical force application. This segmentation allows each path to serve its specific purpose without compromising the other.
3Reliability
If additional handles or buttons are added for emergency opening, then emergency access is enabled, but the aesthetic appearance and device simplicity are compromised
Solution Approach 1:
The door leaf itself serves multiple functions: it provides the primary door closure, and simultaneously serves as the activation mechanism for emergency opening. By making the door leaf universal, the system eliminates the need for separate emergency opening handles or buttons, maintaining aesthetic simplicity while providing emergency access capability.
Solution Approach 2:
The door leaf performs self-service by directly transmitting the emergency opening force through the parallelogram guide system. This eliminates the need for intermediate mechanical components such as separate handles or buttons, reducing device complexity while maintaining emergency access functionality.
Data Source
AI summary
A sliding-door system includes a sliding door, a door frame, and a locking system, wherein in a locked state, a first latch engages in an engagement notch of an anchor body locking the sliding door, and a bolt engages on the anchor body in an engagement region to prevent the anchor body from rotating about a rotational axis. An actuator moves the bolt out of the engagement region to switch the locking system from the locked state into an open state by rotating the anchor body about the rotational axis. A locking system emergency opening function is actuated by applying an emergency activation force to a first door leaf to move a lock substantially perpendicular to a surface of the first door leaf such that the engagement notch is slid out of the engagement region to enable the sliding door to open.