Exhaust Band Clamp Seal With Visible Tab for Fit Verification
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Solution Overview
Problem
In the assembly of fluid-conducting components in a motor vehicle's exhaust gas line, it is difficult to verify if a seal has been properly fitted once a band clamp is mounted, requiring disassembly for inspection.
Innovation Solution
A visible tab is integrated into the seal that protrudes from the connecting point between the components, allowing for visual verification of the seal's presence through a separation joint in the band clamp, with alignment features like grooves, lugs, and mandrels ensuring the tab's visibility and correct positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a band clamp is mounted to connect fluid-conducting components, then the components are securely attached, but it becomes impossible to verify whether a seal has been fitted without disassembling the connection
Solution Approach 1:
A tab is integrated into the seal structure before assembly, which protrudes through the band clamp's separation joint after installation. This preliminary design feature enables verification of seal installation without requiring disassembly, as the tab provides visual confirmation that the seal is properly in place between the connected components.
Solution Approach 2:
The tab acts as an intermediary element that bridges the seal (internal component) and the external inspection point (separation joint of band clamp). By extending part of the seal structure outward through the band clamp gap, it mediates between the sealed connection and the need for verification, allowing inspectors to confirm seal installation without disrupting the connection integrity.
2Reliability
If the seal is made fully functional without additional features, then the sealing performance is optimized, but there is no way to visually verify the seal's presence after assembly
Solution Approach 1:
The tab can be marked in color or provided with a signal color to enhance visibility through the separation joint of the band clamp. This color marking feature allows for easy visual recognition and verification of the seal's presence, particularly in poor lighting conditions or when quick inspection is required, without compromising the seal's functional performance.
Solution Approach 2:
The seal structure is extended from a purely radial sealing element to include an axial protrusion (the tab) that reaches through the band clamp's separation joint. This dimensional extension creates a new inspection dimension, allowing verification of seal installation from the external side without affecting the radial sealing function between the connected components.
3Manufacturing precision
If alignment features like grooves and lugs are added to ensure correct positioning, then the seal and band clamp can be precisely aligned, but the manufacturing complexity increases
Solution Approach 1:
The alignment system is segmented into separate functional elements: a groove or recess in one component, a corresponding lug or protrusion in another component, and a mandrel or positioning feature in a third component. This segmentation allows each element to be manufactured independently using standard machining processes, reducing overall manufacturing complexity while achieving precise alignment when assembled.
Solution Approach 2:
The alignment features (grooves, lugs, mandrels) are designed to automatically guide and position the seal and band clamp relative to each other during assembly. These self-aligning features eliminate the need for complex external alignment tools or procedures, as the components themselves provide the positioning functionality through their geometric features, thereby simplifying the manufacturing and assembly processes.
Data Source
AI summary
The invention relates to an arrangement (100) for connecting a first fluid-conducting component (110) to a second fluid-conducting component (120), more particularly in the exhaust gas line of a motor vehicle, having a seal (130), which seals the components (110, 120) at the connecting point, and having a band clamp (140), which encloses the components (110, 120) at the connecting point and attaches the components (110, 120) to each other. According to the invention, the seal (130) is formed with a tab (131), which protrudes at the connecting point after the components (110, 120) have been connected and is visible through a separation joint (141) of the band clamp (140). The invention further relates to a corresponding method for connecting a first fluid-conducting component (110) to a second fluid-conducting component (120).