Security Fence Detection Cable Fixation via Converging Guide Rail
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Solution Overview
Problem
Conventional security fences with U-shaped clamping profiles fail to reliably hold detection cables, leading to unreliable signal generation due to loose fixation, which is exacerbated by the use of plastic wedges and soft integration methods.
Innovation Solution
The use of ball or cylindrical clamping bodies within a U-shaped guide rail with converging side walls ensures a secure and permanent hold of the detection cable, preventing displacement even under thermal expansion or impacts, and allowing for precise adjustment of contact pressure to maintain signal clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic wedges are used to fix the cable in the U-profile, then the cable can be initially positioned, but the fixation becomes unreliable over time and the cable fails to generate clear signals
Solution Approach 1:
The patent changes the geometric parameters of the guide rail by introducing converging side walls that form a conical opening. This geometric modification creates a self-locking mechanism where the clamping body is mechanically constrained by the converging walls, transforming the fixation from a static plastic wedge system to a geometrically constrained mechanical lock that maintains reliability over time.
Solution Approach 2:
The patent introduces a clamping body as an intermediary element between the detection cable and the guide rail. This clamping body, in the form of a ball or cylindrical section, acts as a mechanical mediator that transmits the constraining force from the converging side walls to the cable, providing reliable and durable fixation without direct contact between the cable and the guide rail walls.
2Ease of manufacture
If the detection cable is loosely integrated using soft materials like silicone, then the cable can be easily installed, but the detection capability and signal clarity are degraded
Solution Approach 1:
The clamping body serves as a mechanical intermediary that provides precise, controlled contact pressure on the detection cable. Unlike soft materials that deform and provide inconsistent contact, the rigid clamping body maintains stable geometric contact, ensuring both easy installation through simple insertion and high signal detection clarity through consistent mechanical coupling.
Solution Approach 2:
The patent changes the contact interface from a soft, deformable material contact to a rigid, geometrically defined contact through the clamping body. This parameter change in material rigidity and contact geometry ensures that the detection cable maintains its signal generation capability while being securely held in position.
3Device complexity
If a U-profile with parallel side walls is used, then the profile structure is simple, but the clamping body can fall out and the cable cannot be permanently fixed
Solution Approach 1:
The patent applies asymmetry to the guide rail structure by making the side walls converge towards the opening, creating a conical rather than parallel configuration. This asymmetric geometric modification maintains relative structural simplicity while fundamentally changing the mechanical behavior to provide self-locking retention of the clamping body and permanent cable fixation.
Solution Approach 2:
The patent modifies the geometric parameters of the guide rail by introducing a convergence angle between the side walls. This parameter change from parallel (0° convergence) to converging (positive convergence angle) creates the self-locking mechanism that prevents the clamping body from falling out while maintaining structural simplicity.
Data Source
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AI summary
Assembly part (30) to assemble security fence wtih fence posts, flat fence parts (12) made of grid matting, detection cable (16) held by clamps (18) which are moulded into U-shaped guide rails (14) whose sides converge towards their opening. It is able to be connected to the guide rails on one hand and can be positively fixed to the flat fence parts on the other. Part is put or moulded onto guide rail, and positively or materially fixed to it and then welded onto it. It has a hollow space inside which has an opening into which a horizontal rod of the grid matting can be guided.