Pivotable Filter Element Handlebar for Easy Locking

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Solution Overview

Problem

Existing filter elements in filter housings require additional manipulation to lock or unlock during installation and removal due to the need for turning an element around an axis parallel to the sliding direction, which is inconvenient.

Innovation Solution

A filter element with a pivotable handlebar that engages with locking grooves and a hook in the housing, allowing locking and unlocking through pivoting motions perpendicular to the sliding direction, facilitating secure fastening and easy installation/removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking mechanism requiring turning an element around an axis parallel to the sliding direction is used, then the filter element can be locked securely in the housing, but additional manipulation is required during installation and removal

Engineering Contradiction:

Improvelocking reliabilityVSAvoidinstallation convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent inverts the conventional locking mechanism by changing the axis of rotation from parallel to perpendicular to the sliding direction. The handlebar rotates around an axis perpendicular to the sliding direction, allowing the locking action to occur in the opposite orientation, which eliminates the need for additional turning manipulation while maintaining secure locking

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the dimensional orientation of the locking mechanism by transitioning from a one-dimensional turning motion (parallel to sliding) to a two-dimensional pivoting motion (perpendicular to sliding). This dimensional change allows the locking action to be integrated into the same plane as the sliding motion, reducing operational steps

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If a handle structure with locking unit is provided, then the filter element can be locked in place, but the device complexity increases

Engineering Contradiction:

Improvelocking reliabilityVSAvoidhandle structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the handlebar with the locking mechanism into a single integrated component. The handlebar itself serves as both the gripping element and the locking element, eliminating the need for separate handle and locking unit structures. This integration reduces device complexity while maintaining locking reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The handlebar performs multiple functions: it serves as the gripping portion for manual operation, the pivoting element for locking/unlocking, and the engaging element with the housing. This multi-functionality reduces the number of components needed, thereby reducing device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12533618B2Filter element and filter system comprising same

Publication Date: 2026.01.27 DONALDSON CO INC

AI summary

A filter element configured to be installed by sliding said filter element into a filter housing cavity along a first direction, said filter element comprising a handlebar pivotable around a pivoting axis perpendicular to said first direction; wherein said handlebar has a gripping portion on a first side of said axis and a latching portion on a second side of said axis, said second side being opposite said first side; and wherein said latching portion is configured to enter into engagement with at least one locking groove of said filter housing when said gripping portion is moved into a first direction (A) and to disengage from said engagement when said gripping portion is moved into a second direction (B).