Vacuum Filter Annular Catch Design for Secure Cage Attachment
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Solution Overview
Problem
Existing vacuum cleaner filters face challenges in secure attachment to filter cages, particularly in tank-type vacuum cleaners, where the filter needs to be effectively held in place between the dirty air inlet and clean air outlet while allowing for easy installation and removal without exposing the user to dust and debris.
Innovation Solution
A filter design featuring a bottom plate with an annular catch that engages a radial retention ring, allowing for secure attachment and easy handling, along with an adaptor that includes snaps and a radial retention ring for secure engagement with the filter cage, facilitating easy installation and removal without requiring precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is secured around the filter cage using conventional methods, then the filter is held in place, but the attachment mechanism becomes complex and difficult to install/remove
Solution Approach 1:
The filter attachment mechanism is segmented into distinct functional elements: the annular catch on the filter bottom plate and the corresponding engagement feature on the filter cage. This segmentation allows each component to be independently designed and manufactured, simplifying the overall connection mechanism while maintaining secure attachment.
Solution Approach 2:
The filter design incorporates a self-aligning annular catch that automatically engages with the filter cage during installation without requiring precise manual alignment or complex adjustment mechanisms. The catch structure itself provides the attachment function, eliminating the need for separate fastening components.
2Reliability
If a secure filter attachment mechanism is used, then the filter is held firmly in place, but the installation and removal process becomes time-consuming
Solution Approach 1:
The annular catch is pre-formed as an integral part of the filter bottom plate during manufacturing, eliminating the need for separate assembly steps during installation. The catch is already in its engagement-ready position, allowing for rapid attachment to the filter cage without requiring preliminary adjustments or activations.
Solution Approach 2:
The attachment mechanism incorporates dynamic flexibility through the annular catch design, which can elastically deform during installation to accommodate minor misalignments and then spring back into its engagement position. This dynamic behavior enables quick, tool-free installation and removal while maintaining secure attachment during operation.
3Ease of operation
If the filter is easily removable for maintenance, then user accessibility is improved, but the risk of dust exposure to the user increases
Solution Approach 1:
The annular catch acts as an intermediary mechanism that provides a controlled interface between the user and the filter interior. During removal, the catch guides the filter away from the cage in a predetermined path, allowing the user to maintain distance from the dust-containing interior while still easily removing the filter for maintenance.
Data Source
AI summary
A filter for a vacuum cleaner includes a top having an open center, a bottom plate having an outermost edge, a center, an inside surface facing towards the top, an outside surface facing away from the top, and a catch extending from the inside surface annularly around the center, filter material being secured between the top and bottom plate. An adaptor for a filter cage or the filter cage itself includes a radial retention ring that engages the catch of the filter.