Static Mixer Tip Retention Structure for Secure Element Assembly

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Solution Overview

Problem

The assembly of mixing elements and mixer housings in static mixers is cumbersome, leading to issues such as discarded components due to missing elements.

Innovation Solution

Incorporation of retaining members, such as snap hooks, projections, and recesses, to securely hold the mixing element in the mixer housing, ensuring reliable retention and easy installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mixing elements are assembled into mixer housings without retaining members, then the assembly process is simple, but the mixing elements can be lost or discarded during handling

Engineering Contradiction:

Improveretention of mixing elementVSAvoidassembly structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The retaining members are integrated directly into the mixer housing structure, merging the retention function with the housing itself. This eliminates separate retention components while ensuring the mixing element remains securely held during handling and assembly operations.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of operation

If retaining members are added to hold mixing elements, then handling during manufacture is improved, but the device complexity increases

Engineering Contradiction:

Improvehandling during manufactureVSAvoidassembly structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The retaining members are designed as discrete, modular features (such as protrusions or clips) that can be independently formed into the mixer housing. This segmentation allows for simplified manufacturing processes where each retaining member can be created separately and then integrated, improving ease of assembly while controlling overall complexity.

Inventive Principle:

Principle #1Segmentation

3Reliability

If multiple retaining members are used to securely hold the mixing element, then retention reliability is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvesecure retentionVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The retaining members are designed with universal geometric features (such as standardized protrusion shapes and corresponding recesses) that can be manufactured using the same molding or fabrication processes regardless of the specific application. This multi-functionality allows the same retention mechanism to be used across different mixer housing designs, simplifying manufacturing while ensuring reliable retention.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4711030A1Mixing tip

Publication Date: 2026.03.18 MEDMIX SWITZERLAND AG

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Figure 2A
Figure 2B~2D

AI summary

The invention relates to a mixing tip comprising a mixer housing and a mixing element, wherein at least one of the mixing element and the mixer housing has one or more retaining members formed thereat, with the one or more retaining members being configured to hold the mixing element in the mixer housing.