Anti-reverse Sealing Lock with Stepped Groove Latch Rod
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Solution Overview
Problem
Existing sealing locks for cargo containers are vulnerable to destruction and substitution, failing to provide a reliable anti-reverse mechanism that can prevent unauthorized access and ensure the integrity of the seal.
Innovation Solution
A transparent housing with a locking block and anti-reverse member, where the anti-reverse member is positioned between the locking ring and the bottom of the housing, and a latch rod with stepped grooves, which includes a C-shaped ring retained in the first stepped groove and an anti-reverse mechanism formed by the anti-reverse member abutting against the second stepped groove, preventing removal of the latch rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If C-shaped rings are used as anti-reverse mechanisms, then the sealing lock provides basic anti-removal functionality, but the C-shaped rings are easily destroyed by tools or external force, failing to provide reliable sealing
Solution Approach 1:
The anti-reverse mechanism is divided into multiple independent components: the latch rod with stepped grooves, the C-shaped ring for sealing, and the anti-reverse member with protrusions. This segmentation allows each component to perform its specific function - the C-shaped ring provides sealing while the anti-reverse member provides destruction resistance, resolving the contradiction between sealing effectiveness and strength.
Solution Approach 2:
The anti-reverse mechanism combines different structural elements with complementary properties: the C-shaped ring (flexible sealing element) combined with the anti-reverse member (rigid protective element). This composite structure ensures that the sealing function is maintained while adding protection against tool-based destruction, as the anti-reverse member must be destroyed first to access the C-shaped ring.
2Reliability
If multiple C-shaped rings are used to provide anti-reverse mechanism, then basic anti-removal function is achieved, but the complexity of the device increases and the C-shaped rings remain vulnerable to destruction
Solution Approach 1:
The anti-reverse member serves multiple functions: it provides the anti-reverse mechanism through its protrusions abutting against the second stepped groove, protects the C-shaped ring from destruction, and maintains the sealing integrity. This multi-functionality reduces the need for additional separate components, simplifying the overall device structure while improving reliability.
3Ease of operation
If the latch rod can be easily removed for replacement, then operation is simple, but the sealing lock can be easily tampered with or reversed
Solution Approach 1:
The anti-reverse member is pre-installed in the locking block with its protrusions positioned to abut against the second stepped groove of the latch rod. This preliminary arrangement ensures that before the latch rod can be removed, the anti-reverse mechanism must be activated, which requires destroying the anti-reverse member first. This creates a preliminary barrier against tampering while allowing legitimate replacement procedures.
Solution Approach 2:
The anti-reverse member protrusions are designed to preemptively counteract any removal attempt by abutting against the second stepped groove. This preliminary anti-action prevents the latch rod from being pulled out without first destroying the anti-reverse member, thereby preventing tampering while still allowing controlled replacement by authorized personnel with proper tools.
Data Source
AI summary
An anti-reverse sealing lock includes a transparent housing having a passage with an opening in a top side of the transparent housing. A locking block is mounted in the passage and includes a locking ring and an anti-reverse member mounted in the passage. The locking ring includes a locking ring hole having an inclined groove receiving a C-shaped ring. The anti-reverse member includes a through-hole. A latch rod includes an insertion section having a first stepped groove and a second stepped groove. The latch rod extends through the opening, the locking ring hole, and the through-hole. The C-shaped ring is retained in the first stepped groove. A peripheral edge of the through-hole at an end of the anti-reverse member abuts against an end wall of the second stepped groove when the latch rod moves in a removal direction, preventing removal of the latch rod.