Sanitary Insert Sealing Ring Retention Design

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Sanitary inserts face issues with the sealing ring becoming loose during transportation or assembly due to excessive vibration, leading to potential leaks, especially when bulk units collide, and existing solutions either compromise aesthetics or increase production costs.

Innovation Solution

A sanitary insert design featuring a disc-shaped sealing ring with a securing projection on the housing edge area that protrudes into a matching indentation on the sealing ring, ensuring secure retention within the insert housing, even under vibration, without significantly increasing production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the sealing ring is inserted only slightly into the housing edge region to maintain aesthetics and reduce cost, then the radial preload on the sealing ring is minimized, but the sealing ring may unintentionally detach during transport or assembly due to vibration

Engineering Contradiction:

Improveproduction costVSAvoidsealing ring retention

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The sealing ring is divided into functionally distinct regions: an inflow-side region that slightly penetrates the housing edge for sealing with minimal radial preload, and an outflow-side region that extends beyond the housing end face to engage with the retaining feature. This segmentation allows each region to fulfill its specific function optimally.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The solution transitions from relying solely on radial preload (single dimension) to incorporating axial engagement through the retaining feature (adding another dimension). The retaining feature with its retaining projection engages the sealing ring in the axial direction, providing additional retention without increasing radial preload or penetration depth.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If the sealing ring is secured with strong retention features, then detachment during transport is prevented, but the complexity of the housing structure increases

Engineering Contradiction:

Improvesealing ring retentionVSAvoidhousing structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The retaining feature on the housing end face serves multiple functions: it provides a stopping surface for the sealing ring during insertion, engages with the retaining projection to prevent detachment, and maintains a simple overall structure. This multi-functionality achieves reliable retention without adding structural complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If the sealing ring penetrates deeply into the housing edge region to ensure retention, then the sealing ring cannot pop out, but the aesthetic appearance of the sanitary faucet is compromised

Engineering Contradiction:

Improvesealing ring retentionVSAvoidaesthetic appearance

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP2620559B1Jet regulator with gasket fixed thereto

Publication Date: 2019.02.13 NEOPERL GMBH

Figure 1~4
Figure 5~8

AI summary

The component has a shell body fixed with a sealing ring, a disk and a shell area. A fixing device is provided with a fixed bump. The fixed bump is fixed on an edge of a shell region. The sealing ring is fixed to the disk. The fixed bump extends into the sealing ring. An edge of the shell area is fixed with a fixed concave forming part.