Flush-Mounted Box Pipe Entry With Conical Sealing and Retention
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Solution Overview
Problem
Existing pipe entries for flush-mounted boxes face challenges in easy handling, reliable cable protection hose attachment, and effective sealing against fresh concrete, with limitations in accommodating cables of different diameters and ease of installation.
Innovation Solution
The pipe entry design includes a conical inner surface for clamping cable protection tubes, a sealing element with a pipe stop to prevent concrete penetration, and a closure element with a hinge or band for easy operation, allowing for axial or transverse connection of cables and accommodating various diameters through multiple conical surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealing elements are used that can be removed to connect cable protection conduits, then the sealing against fresh concrete is effective, but the ease of operation is reduced due to the need to remove and replace components
Solution Approach 1:
The sealing element is pre-integrated into the pipe entry structure with built-in breaking points that allow the sealing function to be automatically activated during concrete pouring, eliminating the need for separate installation steps while maintaining effective sealing against fresh concrete
Solution Approach 2:
The sealing element and pipe entry structure are merged into a single integrated component, where the sealing function is built-in and automatically engages during the concrete pouring process, eliminating the need for separate sealing and connection operations
2Ease of operation
If the pipe entry structure is simplified for easy handling, then the ease of operation is improved, but the reliable retention of attached cable protection conduits is compromised
Solution Approach 1:
Retaining elements such as ribs or protrusions are pre-formed as integral parts of the pipe entry structure during manufacturing, providing reliable mechanical retention of cable protection conduits without requiring additional complex assembly steps or components
Solution Approach 2:
The pipe entry structure features localized retaining elements (ribs, protrusions, or engagement contours) positioned at specific locations where cable protection conduits need to be retained, providing strong retention only where needed while keeping the rest of the structure simple for easy handling
3Ease of operation
If sealing elements are designed to be removable for conduit connection, then the ease of operation is improved, but the effective sealing against fresh concrete is reduced
Solution Approach 1:
The sealing element is designed with predetermined breaking points that allow it to be automatically activated during concrete pouring, providing effective sealing from the start without requiring removal or adjustment, while still allowing conduit connection through the breaking point mechanism
Solution Approach 2:
The sealing element is segmented into portions that can be broken away at predetermined points to allow conduit insertion, while the remaining portion maintains the sealing function, enabling both effective sealing and ease of conduit connection
4Adaptability or versatility
If the pipe entry accommodates cables of different diameters, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The pipe entry structure incorporates a conical inner surface that can universally accommodate cable protection conduits of different diameters through a single geometric form, eliminating the need for multiple specialized components for different cable sizes
Solution Approach 2:
The conical inner surface allows the pipe entry to adapt to different cable diameters by changing the contact area and engagement parameters along the cone, providing versatile accommodation for various cable sizes without requiring structural modifications
Data Source
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AI summary
The invention relates to a pipe entry (1) for a flush-mounted box (2). This pipe entry has an opening (9) for connecting a cable protection conduit (5) to the flush-mounted box (2). Furthermore, a closing element (10) for closing the opening (9), a retaining element (3) for attaching the cable protection conduit (5) to the flush-mounted box (2), and a sealing element (14) for sealing the opening (9) against the cable protection conduit (5) are provided.