Double Door Lock Device with Interlocking Profiles
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Solution Overview
Problem
Conventional lock devices for double doors, especially those used in storage and cargo containers, are often weak, difficult to install, and lack effective anti-theft features, making them vulnerable to tampering and theft.
Innovation Solution
A lock device with interlocking profiles on both doors that secure the lock mechanism inside the container, using long bolts and washers to ensure the lock parts remain fixed during door operation, and featuring a locking groove or cavity design that obstructs unauthorized opening, with optional electronic locking for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional lock devices are used for double doors, then the structure is simple and easy to install, but the security strength is weak and vulnerable to tampering
Solution Approach 1:
The lock device is divided into multiple independent components: first and second lock parts, each with exterior and interior portions, bolt means, and interlocking means. This segmentation allows each component to perform a specific function while maintaining overall structural simplicity and ease of installation.
Solution Approach 2:
The interior parts of the lock device are positioned inside the container, with the first interior part having female interlocking means and the second interior part having male interlocking means that engage within the container space. This nesting arrangement enhances security by protecting the locking mechanism while maintaining a relatively simple external structure.
2Reliability
If the lock mechanism is made inaccessible to deter theft, then security is enhanced, but the ease of operation is reduced
Solution Approach 1:
The lock bolt acts as an intermediary element that connects the interior lock parts while remaining inaccessible from the exterior. The bolt means in each lock part extend through the door walls and engage with each other inside the container, providing secure locking without exposing the mechanism to potential thieves, yet allowing operation through the door structure itself.
3Stability of the object's composition
If long bolts are used to secure lock parts through door walls, then the fixity and security are improved, but the difficulty of installation and removal increases
Solution Approach 1:
The bolt means are integrated as separate, removable components within each lock part rather than being permanently fixed. This allows the bolts to provide strong securing when installed, while enabling relatively easy removal and reinstallation of the entire lock part assembly, balancing fixity with installation ease.
Data Source
AI summary
A lock device (1,2) for a double door (55) comprises a first lock part (1) for mounting on a first wall (56a) of a first door (56) of the double door (55), which first lock part (1) comprises a first exterior part (3) and a first interior part (4), a second lock part (2) for mounting on a second wall (57a) of a second door (57) of the double door (55) for locking together with the first lock part (1) in closed position of the double door (55), which second lock part (2) comprises a second exterior part (42) and a second interior part (43), and a lock. The first lock part (1) comprises a first bolt means (5,5a,5b,5c) having a first length selected to screw the first exterior part (3) and the first interior part (4) together through the first wall (56a) of the first door (56). The second lock part (2) comprises a second bolt means (48,48a,48b) having a second length selected to screw the second exterior part (42) and the second interior part (43) together through the second wall (57a) of the second door (57), and the first interior part (4) has female interlocking and/or engagement means (7) for engaging male interlocking and/or engagement means (45) of the second interior part (43). The lock device is particular useful on storage containers to prevent intrusion and theft.