Corrugated Pipe Sealing Insert With Anti-Twist Ribbed Fit
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Solution Overview
Problem
Existing corrugated pipe screw connection systems lack a compact and effective sealing solution, requiring additional seals and a larger structure to ensure tightness, especially when connecting to a connection geometry.
Innovation Solution
A sealing insert with a recess designed to absorb a corrugated tube, featuring a first and second end with varying outer diameters, partially circumferential ribs, and a rotary protection on its outer coat, which integrates with the screw connection system to enhance sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional seals and cable glands are added to ensure tightness, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The sealing insert combines multiple sealing elements (sealing bead, sealing flange, and anti-twist device with locking elements) into a single integrated component that is inserted directly into the corrugated pipe. This merging of functions eliminates the need for separate seals and cable glands, achieving reliable sealing while reducing structural complexity
Solution Approach 2:
The sealing insert serves multiple functions simultaneously: it provides sealing through the sealing bead and flange, prevents twisting through the anti-twist device with locking elements, and structurally reinforces the corrugated pipe. This multi-functionality allows a single component to replace multiple separate elements, improving reliability without increasing overall device complexity
2Device complexity
If a compact fitting design is implemented, then device complexity is reduced, but sealing reliability may deteriorate
Solution Approach 1:
The sealing insert applies different sealing mechanisms at different locations: the sealing bead contacts the corrugated pipe at one location to prevent liquid ingress, while the sealing flange provides additional sealing at another location. The anti-twist device with locking elements is positioned to prevent rotation without interfering with sealing. This localized application of different sealing qualities ensures reliable sealing within a compact design
Solution Approach 2:
The sealing insert is designed to be inserted directly into the corrugated pipe, with the sealing bead nesting within the pipe's corrugations. The sealing flange nests within the pipe structure, and the anti-twist device nests within the overall fitting assembly. This nested arrangement achieves compact design while maintaining multiple sealing functions
3Adaptability or versatility
If the sealing insert is designed with varying outer diameters, then adaptability to corrugated pipes is improved, but manufacturing precision requirements increase
Solution Approach 1:
The sealing insert features different outer diameters at different locations: a first outer diameter for the main body and a second, smaller outer diameter for the anti-twist device portion. This local variation in dimensions allows the insert to adapt to the corrugated pipe's geometry while providing anchoring features. The dimensional variations are designed to match specific features of the corrugated pipe, balancing adaptability with manufacturable precision requirements
4Stability of the object's composition
If an anti-twist device with locking elements is added, then stability of the sealing insert is improved, but device complexity increases
Solution Approach 1:
The anti-twist device is merged with the sealing insert as an integrated component rather than a separate element. The locking elements are formed as part of the insert's structure, and the anchoring features are incorporated into the same component that provides sealing. This merging reduces the number of separate parts while maintaining anti-twist stability
Solution Approach 2:
The anti-twist device with locking elements is designed to automatically engage with the corrugated pipe structure upon insertion. The locking elements self-anchor into the pipe's corrugations, providing anti-twist stability without requiring additional adjustment or separate fastening operations. This self-service mechanism reduces installation complexity while maintaining stability
Data Source
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AI summary
A sealing insert (10) for a corrugated-pipe screw fastening system (70) is proposed, which comprises a cutout (16), in particular a cutout that passes all the way through the sealing insert, formed in the direction of a longitudinal axis of the sealing insert, for receiving a corrugated pipe. An internal wall (60) bounding the cutout comprises at least one, preferably a plurality of, in particular at least two, at least partially encircling ribs (62).