Sliding Door Locking System with Padlock Shackle
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Solution Overview
Problem
Existing sliding door locking systems fail to prevent intruders from unlocking sliding doors from inside the structure and are vulnerable to external attacks, with security risks due to the ability of doors to pivot and slide, and existing solutions do not address the issue of environmental exposure and ease of lock cutting.
Innovation Solution
A sliding door locking system comprising a locking plate, bracket, and lock housing with a padlock shackle, where the lock housing is rotated to engage with the bracket, preventing transverse motion and securing the door, with a cover plate to shield the lock from environmental conditions and external tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door is mounted to slide along a track without bottom attachment, then ease of operation is improved, but security is worsened due to ability to pivot and swing outwardly
Solution Approach 1:
The locking system is divided into multiple independent components: a lock housing mounted in the door, a separate catch mechanism mounted to the door frame, and a shackle that connects them. This segmentation allows each component to perform its specific function while collectively providing security without restricting the door's sliding operation.
Solution Approach 2:
The lock housing is mounted within the door structure itself, nesting the locking mechanism inside the door rather than requiring external mounting. This allows the lock to be integrated into the door's existing structure while maintaining the ability to slide freely along the track.
2Reliability
If latches or chains are used to hold sliding doors from inside the structure, then security is improved, but ease of operation is worsened and vulnerability to intruders increases
Solution Approach 1:
Instead of using latches or chains that require manipulation from inside the structure, the system uses a padlock with shackle that can be engaged and disengaged from the outside. The catch has a receptacle that receives the shackle, allowing external operation while providing secure locking.
Solution Approach 2:
The locking action is extracted from the door's sliding mechanism and implemented as a separate, independent padlock system. This extraction allows the door to slide freely while the separate locking mechanism provides security without interfering with operation.
3Ease of operation
If the lock shackle is exposed for easy access, then ease of operation is improved, but security is worsened due to vulnerability to cutting attacks
Solution Approach 1:
A cover plate is used to shield the shackle and lock housing from external attacks. The cover plate acts as a protective barrier that prevents bolt cutters or saws from easily accessing the shackle, while still allowing the shackle to be inserted and removed when needed.
Solution Approach 2:
The cover plate serves as an intermediary element between the external environment and the vulnerable shackle. It provides physical protection against cutting tools while maintaining the functional ability to lock and unlock the door.
Data Source
AI summary
A locking system for a sliding door which inhibits both the sliding travel and pivoting action of the door and prevents an intruder from unlocking the sliding door from the inside of the structure.