Filter Housing Bracket Self-Locking Mechanism

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Solution Overview

Problem

Existing filters require additional components for securing the filter cartridge, which complicates the locking mechanism and increases the risk of accidental release.

Innovation Solution

A pivotally secured bracket on the carrier housing that moves between a locking and release position, using a self-locking clamping mechanism between steps on the filter and carrier housings to securely lock the filter element without additional components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional clamping components are provided on the filter housing to secure the filter cartridge, then the locking reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvelocking reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The bracket is designed to combine two functions: it serves as both a support for inserting and removing the filter cartridge, and as a clamping device for securing the filter cartridge in the filter housing. This merging of functions eliminates the need for separate clamping components, thereby maintaining locking reliability while reducing device complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The bracket is designed as a multi-functional component that performs multiple tasks: supporting the filter cartridge during insertion/removal, clamping the filter cartridge in the locked position, and providing a leverage arm for manual operation. This universal design allows a single component to replace what would traditionally require multiple separate parts

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

2Reliability

If a self-locking clamping mechanism is used to secure the bracket, then the reliability against accidental release is improved, but the ease of operation may worsen

Engineering Contradiction:
Improveanti-accidental releaseVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The bracket utilizes the self-locking effect of the clamping section between the two steps to automatically maintain its locking position without requiring additional locking mechanisms or active control systems. The geometry of the clamping section and steps creates a natural self-locking condition that prevents accidental release while keeping the mechanism simple and easy to operate

Inventive Principle:
Principle #25Self-service

3Device complexity

If the bracket is designed to perform both support and clamping functions, then the device complexity is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvedevice complexityVSAvoidmanufacturing precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The clamping section of the bracket and the corresponding steps on the filter housing and carrier housing are designed with specific local geometric features that create the self-locking effect. By concentrating the precision requirements in these localized clamping interfaces rather than throughout the entire bracket structure, the overall manufacturing precision requirements are managed while maintaining the multi-functional capability

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS8216332B2Filter with a filter housing
Publication Date: 2012.07.10 MANN HUMMEL GMBH
  • US8216332B2 patent drawing
  • US8216332B2 patent drawing
  • US8216332B2 patent drawing

AI summary

A filter device has a filter housing having a receiving space and a carrier housing. A filter element is arranged in the carrier housing, wherein the carrier housing is inserted into the receiving space of the filter housing and locked in the receiving space. A bracket with a clamping section is arranged on the carrier housing and is secured pivotally on the carrier housing by a hinge so as be pivotable between a locking position and a release position. In the locking position, the damping section of the bracket is clamped between a step on the filter housing and a step on the carrier housing and is secured in a self-locking position.