Filter Insert Axial Connection Mechanism for Engine Maintenance

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Solution Overview

Problem

Existing filter arrangements for internal combustion engines lack efficient methods for removing and replacing filter inserts without compromising cleanliness or increasing the time required for maintenance.

Innovation Solution

A filter insert and housing arrangement featuring a first connection means that prevents rotational movement while allowing axial movement, enabling the filter insert to be removed or inserted in conjunction with the lid, thereby simplifying the process and maintaining cleanliness by avoiding direct contact with the used filter insert.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the filter insert is removed directly from the filter housing, then the replacement process is simple, but the maintenance time increases and cleanliness is compromised due to direct contact with the used filter insert

Engineering Contradiction:

Improveease of filter insert replacementVSAvoidmaintenance time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The connection means merges the lid and filter insert into a single removable unit. The lid includes a first connection means that engages with a second connection means on the filter insert, creating a unified assembly that can be removed and reinstalled as one piece. This combination eliminates the need for separate handling of the filter insert, reducing maintenance time and improving operational efficiency.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of operation

If the filter insert is removed directly from the filter housing, then the replacement process is straightforward, but cleanliness is compromised due to direct contact with the used filter insert

Engineering Contradiction:

Improveease of filter insert replacementVSAvoidcontamination during maintenance

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

By combining the lid and filter insert into a single removable unit through the connection means, the system allows the entire assembly to be handled as one piece. This prevents direct contact with the potentially contaminated filter insert during removal and installation, thereby maintaining cleanliness and reducing contamination risks during maintenance operations.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If a connection mechanism allows axial movement for easy installation, then the filter insert can be easily positioned, but rotational stability is compromised

Engineering Contradiction:

Improveease of filter insert installationVSAvoidrotational stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The connection means employs asymmetric features including a projection on the lid that engages with a corresponding recess on the filter insert. This asymmetric geometry provides rotational stability by preventing unwanted rotation while still allowing axial movement during installation. The asymmetric design ensures proper orientation and secure positioning of the filter insert relative to the lid.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS10881991B2Filter insert and a filter arrangement

Publication Date: 2021.01.05 VOLVO TRUCK CORP

AI summary

A filter insert for being removably arranged in a filter housing includes a first connection arrangement for engaging a corresponding second connection arrangement of a filter housing lid for a connection to the filter housing lid. The first connection arrangement is arranged to simultaneously prevent a relative rotational movement between the filter insert and the filter housing lid and allow a relative axial movement between the filter insert and the filter housing lid.