Liquid Filter Radial Lock Mechanism for Rapid Element Exchange

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Solution Overview

Problem

Existing liquid filters require complex thread connections for exchanging filter elements, which are time-consuming and prone to contamination during the process.

Innovation Solution

A liquid filter design featuring a filter element with an extension part and a lock groove, coupled with a lock device at the housing cup that uses radially movable lock means to securely engage and disengage from the lock groove, allowing for quick and reliable exchange of the filter element without the need for thread releases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a thread connection is used for exchanging filter elements, then the filter element can be securely attached, but the exchange process becomes time-consuming and complex

Engineering Contradiction:
Improvesecure attachment of filter elementVSAvoidexchange time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The locking mechanism is segmented into discrete lock means (such as lugs or arms) that can be independently actuated. Each lock means can engage with corresponding features on the filter element, allowing for modular and quick engagement without requiring complex threading operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lock means are designed to be movable between engaged and disengaged states, enabling quick transition during filter element exchange. The dynamic locking mechanism allows operators to rapidly secure or release filter elements without the time-consuming process of threading and unthreading connections.

Inventive Principle:
Principle #15Dynamics

2Reliability

If a thread connection is used for exchanging filter elements, then the filter element can be securely attached, but the exchange process becomes complex

Engineering Contradiction:
Improvesecure attachment of filter elementVSAvoidcomplexity of exchange mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is segmented into discrete lock means (such as lugs or arms) that can be independently actuated. Each lock means can engage with corresponding features on the filter element, allowing for modular and quick engagement without requiring complex threading operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The complex threading operation is extracted and replaced with a simpler locking mechanism. The lock means directly engage with the filter element through features like lock grooves, eliminating the need for threaded connections and significantly simplifying the overall exchange mechanism.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of manufacture

If a traditional drainage socket with thread connection is used, then liquid can be drained, but the thread connection requires release for filter element exchange

Engineering Contradiction:
Improvemanufacturability of drainage socketVSAvoidease of filter element exchange
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The drainage socket functionality is merged with the locking mechanism. The lock means serve dual purposes: they secure the filter element in place and simultaneously control the drainage function. This integration eliminates the need for separate thread connections, allowing filter element exchange without requiring release of drainage connections.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The lock means are designed to perform multiple functions: mechanical locking of the filter element, control of the drainage socket, and provision of a quick-release mechanism. This multi-functionality simplifies the overall system and improves ease of operation during filter element exchange.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240009603A1Liquid filter and filter element
Publication Date: 2024.01.11 MANN HUMMEL GMBH
  • US20240009603A1 patent drawing
  • US20240009603A1 patent drawing
  • US20240009603A1 patent drawing

AI summary

A liquid filter has a filter housing with a housing cup. A filter element of the liquid filter has a filter medium annularly surrounding a longitudinal axis of the filter element. The filter element has an extension part with lock groove. A lock device arranged at the housing cup has a lock element movable radially to the longitudinal axis. The lock element engages the lock groove in a locked state of the lock device and is disengaged in a release state. A filter element for the liquid filter has a filter medium annularly surrounding a longitudinal axis and an extension part with lock groove with rounded cross section. The lock groove is engaged by a lock element, movable radially relative to the longitudinal axis, of a lock device of a housing cup of the liquid filter in a locked state of the lock device and disengaged in a release state.