Charged Air Connector Bead Design for High Pressure Hose Security

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing charge air connection arrangements for motor vehicles fail to securely attach hoses at high pressures, leading to detachment issues.

Innovation Solution

A connecting piece with first and second peripheral beads and a support area between them, featuring corrugations and a stop section, which uses a clamp to securely fasten the hose, preventing slippage and providing additional installation space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional connecting piece without beads is used, then the structure is simple, but the hose slips off under high pressure

Engineering Contradiction:

Improvehose attachment securityVSAvoidconnecting piece structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The connecting piece is segmented into distinct functional zones: a first circumferential bead for initial hose positioning, a second circumferential bead for clamping support, and a bearing area between them for clamp engagement. This segmentation allows each zone to perform its specific function, preventing hose slippage under pressure while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the connecting piece are given different geometric properties tailored to their functions. The beads have specific curvature radii (e.g., 0.5-2mm for the first bead, 1-3mm for the second bead) to optimize hose engagement, while the bearing area has a specific length (e.g., 5-15mm) to provide adequate clamp support. This local optimization ensures reliable hose attachment without requiring complex structures throughout the entire component.

Inventive Principle:

Principle #3Local quality

2Length of moving object

If the connecting piece length is reduced to save space, then installation space increases, but hose attachment reliability decreases

Engineering Contradiction:

Improveconnecting piece lengthVSAvoidhose attachment security

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The first circumferential bead performs a preliminary action by guiding and positioning the hose end before the clamp is applied. This preliminary engagement ensures the hose is correctly positioned and pre-loaded onto the connecting piece, so that when the clamp is installed in the bearing area between the two beads, the hose is already securely engaged. This preliminary action allows for a shorter overall connecting piece length while maintaining attachment reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of increasing connecting piece length in the axial direction to improve hose attachment, the invention uses circumferential beads that engage the hose in a radial dimension. The beads create circumferential contact points that effectively distribute and contain axial loads, transforming the attachment mechanism from a purely axial engagement to a combination of radial and axial engagement. This dimensional transformation allows shorter connecting pieces to achieve the same or better attachment reliability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2878871B1Assembly for a charged air connection for a motor vehicle

Publication Date: 2017.03.22 VERITAS AG

AI summary

The present invention relates to a connector (100) for attaching a hose (105), comprising a first circumferential bead (101-1) on an outside of the connector (100), a second circumferential bead (101-2) on the outside of the connector (100), and a bearing area (103) between the first circumferential bead (101-1) and the second circumferential bead (101-2) for securing the hose (105) to the connector (100) by means of a clamp (107).