Flexible Torch Fume Connection to Protect Machine-Side Housing
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Solution Overview
Problem
Existing fume extraction systems for welding and cutting torches lack flexibility and orientation options, leading to structural rigidity and contamination of electrical connections due to direct coupling of fume extraction hoses with machine-side connection housings, which can result in breakage and compromised electrical connections.
Innovation Solution
A flexible and rotatable connection between the fume extraction hose and machine-side connection housing allows for adjustable placement and reduced exposure of the machine-side housing, incorporating a seal to prevent contamination and enhance extraction efficiency by minimizing fresh air intake and accommodating different hose sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fume extraction hose is directly coupled to the cable support housing with a rigid T-joint, then the connection is structurally strong, but the system loses flexibility and the machine-side housing becomes prone to breakage and contamination
Solution Approach 1:
The patent divides the previously unified rigid connection into separate components: the cable support housing remains fixed to the machine, while the T-joint becomes a detachable, flexible component that can be independently positioned and oriented. This segmentation allows the fume extraction hose to be routed flexibly without compromising the structural integrity of the machine-side housing.
Solution Approach 2:
The patent introduces a flexible connector or hose between the T-joint and the cable support housing, replacing the rigid direct coupling. This flexible element allows for adjustable placement and orientation of the fume extraction hose while maintaining a secure connection, and prevents stress transmission that could cause housing breakage.
2Device complexity
If the T-joint has a fixed and predetermined orientation, then the structure is simple, but the positioning and alignment of the fume extraction hose is prevented
Solution Approach 1:
The patent transforms the fixed, static T-joint orientation into a dynamic, adjustable configuration. The T-joint is designed with rotational joints or flexible connections that allow it to be positioned at various angles and orientations according to the specific welding position and fume flow requirements, while maintaining a relatively simple overall structure.
3Ease of manufacture
If the fume extraction hose is directly coupled to the cable support housing, then the connection is straightforward, but the housing becomes prone to contamination and electrical connection compromise
Solution Approach 1:
The patent extracts the T-joint and fume extraction hose connection from the cable support housing assembly, creating a separate, detachable connection system. This extraction allows the cable support housing to be isolated from fume and moisture contamination, protecting the electrical connections within, while maintaining assembly simplicity through standardized connection interfaces.
Data Source
AI summary
Provided for herein is an apparatus that includes a machine-side connection housing. The machine-side connection housing includes a machine-side connection configured to provide a welding consumable or an electrical connection to a welding/cutting torch head. The apparatus also includes a fume extraction connection housing that includes a fume extraction connection to a fume extraction device. A flexible connection is arranged between the machine-side connection housing and the fume extraction connection housing. A seal that includes a first orifice is arranged between the fume extraction connection and the machine-side connection. Finally, a conduit, configured to connect the machine-side connection to the welding/cutting torch head, is arranged to pass through the first orifice, through the flexible connection and through the fume extraction connection housing to the welding/cutting torch head.