Double-Socket Pipe Joint Structure for Gap-Free Lateral Loading

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Solution Overview

Problem

Existing pipe connection systems fail to prevent gaps from forming between pipes under lateral loads, leading to potential dirt accumulation and reduced tightness, as well as structural damage due to stress.

Innovation Solution

A pipe connection part with an annular web and inner sleeve design that ensures no gaps form between pipes, even under lateral loads, using annular beads and ribs for force distribution and stability, made of a single piece of plastic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If an annular web is arranged between socket areas to prevent pipe displacement, then lateral stop function is improved, but gaps form between the annular web and pipe spigots under lateral loads

Engineering Contradiction:
Improvelateral stop functionVSAvoidtightness of pipe connection
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The annular web is segmented by providing receiving spaces that allow the pipe spigot to be received between the annular web and the inner sleeve. This segmentation enables the structure to accommodate lateral movements while maintaining continuous contact, preventing gap formation and ensuring reliable sealing under lateral loads.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If pipes are connected in a curve layout, then adaptability to different installation configurations is improved, but lateral loads create stress that can damage the coupling

Engineering Contradiction:
Improvecurve layout capabilityVSAvoidcoupling durability
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The coupling incorporates an inner sleeve with a specific receiving space configuration that provides localized support to the pipe spigot. This local quality enhancement at the critical interface between the annular web and pipe spigot allows the coupling to withstand lateral loads generated during curve installations while maintaining structural integrity.

Inventive Principle:
Principle #3Local quality

3Reliability

If the inner diameter of the double socket is adapted to the outer diameter of pipes, then connection tightness is improved, but no accommodation is provided for lateral displacement without creating gaps

Engineering Contradiction:
Improveconnection tightnessVSAvoidlateral load accommodation
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The inner sleeve is nested within the double socket structure, creating a receiving space between the annular web and the inner sleeve. This nested configuration allows the pipe spigot to be positioned securely while accommodating lateral movements without creating harmful gaps, thus maintaining both tightness and adaptability.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP4198366B1Pipe joint part for connecting tip ends of two pipes
Publication Date: 2025.06.25 LWM WERKZEUG UND MASCHENBAU
  • EP4198366B1 patent drawingFigure 1
  • EP4198366B1 patent drawingFigure 2
  • EP4198366B1 patent drawingFigure 3

AI summary

Pipe connector (1) for connecting the spigot ends (37, 38) of two pipes (35, 36), wherein the pipe connector (1) has two socket areas (2, 3), each socket area (2, 3) being designed to receive a pipe spigot end (37, 38) and having an insertion opening (4, 5) for inserting the pipe spigot ends (37, 38), wherein an annular web (6) extending transversely along the inner wall (7) to the longitudinal extent of the pipe connector (1) is arranged between the socket areas (2, 3) of the pipe connector (1), wherein the annular web (6) has an inner sleeve (8) extending on both sides towards the insertion openings (4, 5), and between the inner sleeve (8), the side walls (9, 10) of the annular web (6) and sections of the The inner wall (7) of the pipe connection part (1) has a circumferential receiving space (11, 12) on both sides of the ring web (6) for receiving at least the respective pipe tip ends (37, 38) in sections.