Insulated Extension Sleeve for Nozzle Camera Signal Isolation
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Solution Overview
Problem
Existing pipe cleaning and inspection nozzles with integrated camera modules experience video signal disturbances and potential short circuits due to interference from cleaning fluids, which disrupt electrical connections.
Innovation Solution
A modular extension sleeve system with a loop contact and insulating layer is integrated into the nozzle, providing a form-fit and force-fit connection with the camera adapter, ensuring electrical isolation and secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera module is directly connected to the electrical conductor through the nozzle element, then the electrical connection is simple, but cleaning fluid enters the camera module causing signal disturbances and short circuits
Solution Approach 1:
The patent introduces an extension sleeve as an intermediary component between the camera module and the electrical conductor. This sleeve includes an insulating layer that acts as a mediator to prevent cleaning fluid from reaching the electrical connections, thereby eliminating signal disturbances and short circuits while maintaining reliable electrical connectivity
Solution Approach 2:
The patent extracts the electrical connection interface from the direct path of cleaning fluid by using the extension sleeve to separate the electrical conductor connection area from the cleaning fluid flow path. The insulating layer on the extension sleeve effectively removes the harmful exposure of electrical components to cleaning fluid
2Reliability
If the extension sleeve is tightly fastened to the camera adapter, then electrical isolation is improved, but the coupling complexity increases
Solution Approach 1:
The insulating layer on the extension sleeve serves as a mediator that provides electrical isolation without requiring complex coupling mechanisms. The form-fit and force-fit connection between the extension sleeve and camera adapter achieves reliable electrical isolation through the insulating material itself, rather than through additional isolation components
Solution Approach 2:
The extension sleeve is constructed as a composite structure combining conductive and insulating materials. The insulating layer is applied to the extension sleeve to create a composite component that simultaneously provides mechanical connection (through the sleeve body) and electrical isolation (through the insulating layer), simplifying the overall coupling structure
Data Source
AI summary
Electrical interference signals are to be eliminated during operation and video quality improved in a metal extension sleeve incorporated in an internal space of a nozzle element of a pipe cleaning nozzle and/or inspection nozzle for contacting an electrical conductor via a camera adapter through the internal space of the nozzle element with a camera module fastened outside the nozzle element. The extension sleeve spans the length of the nozzle element and is releasably fastened form-fit and/or force-fit on the camera adapter and the at least one extension sleeve has coupling threads along the outer surface of the coupling section, with which the extension sleeve is tightened in the internal space of the nozzle element. The metal extension sleeve has an electrical insulation layer made of plastic on its outer surface spaced from the central longitudinal axis, which is applied fully to the entire outer surface without defects.