Filter Fan Grille Pivot Guide for Easy Filter Mat Access
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Solution Overview
Problem
Existing air passage devices, such as filter fans, face difficulties in accessibility and filter mat replacement, especially when located in hard-to-reach areas, due to fixed pivot connections that limit flexibility and require complex articulated connections.
Innovation Solution
The air passage device features a pivot pin guide structure with radius contours and a locking cam, allowing for multiple handling positions, including a closed, unfolded latched, and removal position, enabling easy access and replacement of the filter mat, even in inaccessible locations, by facilitating a plane-parallel displacement of the fan grille relative to the base housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fan grille is fixed to the base housing with a simple pivoting movement, then the device structure is simple, but the filter mat is not easily accessible for replacement in hard-to-reach locations
Solution Approach 1:
The articulated connection is designed with a pivot pin guide structure that enables dynamic movement between multiple positions (closed, unfolded latched, and removal positions). This allows the fan grille to transition from a fixed state to an accessible state, improving filter mat replacement ease without requiring completely detached complex mechanisms.
Solution Approach 2:
The connection mechanism is segmented into distinct functional elements: pivot pins for rotation, guide structures for constrained movement, and locking cams for position fixation. This segmentation allows each component to perform a specific function, achieving multi-position capability while maintaining reasonable overall complexity.
2Adaptability or versatility
If separate articulated connection elements are used to form the pivot connection, then the fan grille can be moved, but the production complexity increases
Solution Approach 1:
The pivot connection is formed by integrating the pivot pin guide structure directly into the base housing as a single molded component rather than assembling multiple separate articulated elements. This merging of functions into one component simplifies production while maintaining the required movement adaptability.
Solution Approach 2:
The base housing serves multiple functions: it provides structural support, contains the air passage, and integrates the pivot pin guide structure for articulated connection. This multi-functionality reduces the number of separate parts needed, simplifying manufacturing while maintaining versatility.
Data Source
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AI summary
The device (100) has a fan grill (10) and a header (20), where a filter pad (40) is insertable between the fan grill and the header. The fan grill is arranged in the header by using a joint-like connection. The fan grill has a pivot bolt (11) for forming the joint-like connection, where the pivot bolt guides a pivot bolt guiding structure in the header. The pivot bolt guiding structure connects a closing position, a foldable locking position and a removal position with one another.