Tamperproof Curtain Buckle With Visible Locking Cable
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Solution Overview
Problem
Existing curtain buckles for vehicle side curtains lack tamperproof security, making them susceptible to unauthorized opening during transportation, which compromises load security.
Innovation Solution
A tamperproof buckle design featuring a pivotally engaged lever with security apertures and a recessed strap threading slot, secured by a visible security cable or padlock, to prevent unauthorized opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional curtain buckle is used, then the buckle can be easily opened and closed for strap adjustment, but the buckle is susceptible to unauthorized opening during transportation
Solution Approach 1:
The security cable is pre-threaded through the security apertures in the side walls and the recess in the lever during manufacturing or assembly. This preliminary action ensures that when the buckle is closed, the security cable is already in position to prevent lever rotation, eliminating the need for separate tamperproof installation steps while maintaining ease of operation.
Solution Approach 2:
The security cable acts as an intermediary element between the lever and the side walls. It physically connects these components and prevents the lever from rotating to the open position without requiring manual disassembly. The cable mediates the interaction between the moving lever and the fixed structure, providing tamperproof security while maintaining operational simplicity.
2Reliability
If a security cable is added to prevent tampering, then load security is enhanced, but the device complexity increases
Solution Approach 1:
The security cable serves multiple functions simultaneously: it prevents tampering with the buckle, provides visible security indication, and can be used to secure the entire curtain system. This multi-functionality reduces the need for separate tamperproof devices, maintaining simplicity while enhancing load security.
Solution Approach 2:
The security cable provides visual indication of security status through its presence and position. When intact and properly positioned, it visually confirms the buckle is secured; any attempt at tampering becomes immediately visible. This visual feedback mechanism enhances security without adding complex monitoring systems.
3Difficulty of detecting and measuring
If the security cable is made visible for tamper detection, then tampering can be detected, but the aesthetic appearance of the buckle is compromised
Solution Approach 1:
The recess in the lever provides a localized area where the security cable can be positioned. This local modification allows the cable to be visible for tamper detection purposes while containing the visual impact to a specific area of the buckle, minimizing overall aesthetic compromise.
Solution Approach 2:
The security cable is nested within the recess of the lever and between the side walls, creating a layered structure. This nesting arrangement allows the cable to be visible for security purposes while being integrated into the buckle's overall form, reducing visual disruption compared to external attachments.
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 2D~2E
AI summary
A tamperproof curtain buckle (100) for releasably securing to a strap (190), comprising: a buckle body (120) for securing to a vehicle curtain; and a buckle lever (140) for moving between a closed position for securing the buckle (100) to a strap and an open position for releasing the buckle (100) from the strap, and the lever has a length L extending perpendicularly from a pivot axis P to a free end of the lever, wherein the body (120) has a base (122) and a pair of side walls (124A, 124B) extending from the base (122) and the lever (140) extends between and is pivotally engaged with the side walls (124A, 124B) for rotation about the pivot axis (P); wherein each side wall (124A, 124B) is provided with a security aperture (126A, 126B) for receiving a securing device (192) passing directly between the security apertures to prevent the lever (140) from moving from the closed position to the open position; wherein the lever (140) has an exposed face (142) that faces away from the base (122) in the closed position, and the exposed face has a recess (146) extending across the lever from adjacent one side wall (124A) to adjacent the other side wall (124B) for the securing device (192) to extend through, in use; and a strap threading slot (160) extending parallel with the pivot axis (P) is provided in the recess (146) and extends through the lever (140).