Container Door Lock with Recessed Asymmetric Sleeves
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Solution Overview
Problem
Existing container door locking mechanisms are complex, prone to wear, require intensive maintenance, and have protruding components that can be easily attacked by burglars, failing to provide adequate security against theft and burglary.
Innovation Solution
A container door lock design featuring a two-part bolt with edges that align for precise positioning, a flat structure without protruding elements, and securing means with individualized, asymmetrical screw heads sunk deep within sleeves, making it difficult for burglars to access and loosen the locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional locking mechanisms are used, then the door can be locked, but the mechanism is complex and requires intensive maintenance
Solution Approach 1:
The locking bar is divided into two separate sections (first locking section and second locking section) that can be independently positioned and secured. This segmentation simplifies the overall mechanism by allowing each section to be locked separately using simple securing means inserted through sleeves, eliminating the need for complex interconnected locking components.
Solution Approach 2:
The securing means (such as screws or bolts) are extracted and positioned outside the container door structure, inserted through sleeves that extend through the door. This extraction allows the securing mechanism to be simple and separate from the door structure itself, reducing maintenance requirements while maintaining reliable locking functionality.
2Reliability
If conventional locking mechanisms are used, then the door can be locked, but protruding components are created that can be easily attacked by burglars
Solution Approach 1:
The locking bar sections are nested within the door structure, with the first and second locking sections positioned within or alongside each other. The securing means are inserted through sleeves that are integrated into the door, creating a flush or recessed appearance that eliminates protruding components that could be easily targeted by angle grinders or other burglary tools.
Solution Approach 2:
The sleeves are designed with asymmetric features, including offset positioning and non-uniform cross-sections in some embodiments, making it difficult for burglars to apply standard cutting tools effectively. The individualized screw heads with asymmetric profiles further enhance security by requiring specialized tools that are not commonly available to burglars.
3Ease of manufacture
If the bolt sections are positioned without precise alignment, then assembly is easier, but reliable connection to counterparts cannot be ensured
Solution Approach 1:
The locking bar sections are designed to self-align during assembly through their geometric features. The first and second locking sections have complementary shapes and positioning features that automatically guide them into correct alignment when inserted into the door, eliminating the need for complex adjustment mechanisms or high-precision pre-positioning while ensuring reliable connection to the counterparts.
Solution Approach 2:
The sleeves act as intermediary elements that guide and position the securing means as they pass through the door and engage the locking bar sections. These sleeves provide alignment features and tolerance compensation, allowing the locking sections to be reliably connected to their counterparts without requiring extremely precise initial positioning of the bolt sections themselves.
4Ease of manufacture
If standard screw heads are used, then assembly is simple, but burglars can easily access and loosen the locking mechanism
Solution Approach 1:
The screw heads are designed with asymmetric profiles that do not correspond to standard fastener heads. This asymmetry requires specialized tools with matching asymmetric profiles to loosen or tighten the securing means, preventing burglars from using common tools like standard screwdrivers, Allen keys, or impact drivers. The asymmetric design maintains manufacturing simplicity while dramatically improving security against unauthorized access.
Data Source
AI summary
The invention relates to a container door lock for securing a container door (1), comprising a bolt (2) suitable for contact with an inside (1a) of the container door (1), and at least one first counterpart (3) suitable for contact with an outside (1b) of the container door (1).The container locking mechanism according to the invention is characterized in that the first counterpart (3) has a base plate (4) and one or more sleeves (5) integrally formed thereon, with an inner diameter (I), and that locking means (7) can be fully inserted into the sleeves (5) through openings (6) in the base plate (4), through which the first counterpart (3) and the bolt (2) can be firmly connected to one another, wherein the sleeves (5) have contact surfaces (8) spaced apart from the base plate (4) for the positive locking engagement of heads (9) of the locking means (7), and the distance (A) between the base plate (4) and the contact surfaces (8) corresponds at least to the inner diameter (I) of the sleeves (5). The invention also relates to a container with such a container locking mechanism.