Pleated Cabin Filter Locking Structure for Easy Replacement
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Solution Overview
Problem
Existing air filters for vehicle cabins require frequent replacement and complex installation/removal processes, which can be costly and inconvenient.
Innovation Solution
A filter design featuring a pleated filter medium, an edge strip, and retaining elements that form a locking structure for easy installation and removal within a filter housing, without the need for separate fastening means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional air filters are used with separate fastening means, then the filter can be securely fixed in the filter housing, but the installation and removal process becomes complex and time-consuming
Solution Approach 1:
The patent combines the sealing function and the fastening function into a single integrated sealing element. The sealing element includes sealing lips that provide both the seal between the filter frame and housing, and fastening arms with engagement elements that secure the filter in place. This eliminates the need for separate fastening means, simplifying the installation and removal process while maintaining secure fixation.
2Reliability
If multiple separate components are used for sealing and fastening, then the filter can be securely fixed and sealed, but the manufacturing cost increases
Solution Approach 1:
The sealing element is manufactured as a single integrated component that combines multiple functions: sealing lips for creating the seal, fastening arms for securing the filter, and engagement elements for locking into the housing. This integration reduces the number of parts that need to be manufactured, stored, and assembled, thereby lowering manufacturing costs while maintaining reliable fixing and sealing performance.
Solution Approach 2:
The sealing element serves multiple functions simultaneously: it provides the sealing interface between the filter frame and housing, acts as the fastening mechanism through its integrated arms and engagement elements, and provides structural support for the filter assembly. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall manufacturing complexity and cost.
3Reliability
If traditional filters require separate sealing components, then the seal can be effective, but the number of assembly steps increases
Solution Approach 1:
The sealing element integrates the sealing function directly into the fastening structure. The sealing lips are formed as integral parts of the sealing element, which also includes the fastening arms and engagement elements. This means that a single component performs both sealing and fastening functions, reducing the number of assembly steps required during filter installation while ensuring effective sealing.
Data Source
AI summary
A filter, including a pleated filter medium, an edge strip, and at least one retaining element. The edge strip is fastened on one side of the filter medium. The retaining element is assigned to the edge strip. The edge strip and the retaining element form a locking structure for fixing the filter in a filter housing.