Swivel Lid Mounting Guard Ring for Contaminant Exclusion

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Solution Overview

Problem

Prior-art mounting guard rings allow dirt and paint dust to penetrate into the housing, preventing the pre-mounted unit from being filled with lubricant or preservative agents during storage and transportation.

Innovation Solution

A disk-shaped lid seals the protective ring in a sealing manner, preventing contaminants from entering the housing while allowing it to be filled with lubricant or preservative agents, and is connected to the protective ring via a joint, which can swivel for easy removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mounting guard ring is designed with an open structure for mounting sealing rings, then the sealing ring can be easily mounted and protected, but dirt and paint dust can penetrate into the housing

Engineering Contradiction:

Improveprotection of sealing ringVSAvoidcontaminant penetration

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The mounting guard ring is divided into two main segments: the protective ring and the lid. The protective ring provides mounting protection while the lid seals the housing. This segmentation allows each component to fulfill its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The housing is sealed with the lid before being filled with lubricant or preservative agent. This preliminary sealing action prevents contaminants from entering during the filling process and subsequent storage and transportation.

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If the housing is sealed to prevent contaminant entry, then lubricant can be filled and transported, but the mounting guard ring becomes difficult to remove

Engineering Contradiction:

Improvecontaminant exclusionVSAvoidremoval of guard ring

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The joint connecting the lid to the protective ring is designed as a swivelable hinge rather than a rigid fixed connection. This dynamic joint allows the lid to be easily swiveled open for removal of the protective ring while maintaining a sealed connection during storage and transportation.

Inventive Principle:

Principle #15Dynamics

3Strength

If the lid is rigidly fixed to the protective ring for secure connection, then the holding device is retained, but the guard ring cannot be easily removed from the protective ring

Engineering Contradiction:

Improveconnection strengthVSAvoiddisassembly of lid

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The joint is designed as a swivelable hinge that provides sufficient connection strength to retain the holding device during normal handling, while allowing easy swiveling motion for disassembly. This dynamic connection balances strength and ease of operation.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7651102B2Mounting guard ring

Publication Date: 2010.01.26 CARL FREUDENBERG KG

AI summary

A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.