Rotary Anchoring Mechanism for Engine Filter Housing Assembly
Solution Overview
Problem
Existing filter devices for internal combustion engines face challenges in preventing bypass of filtered air, ensuring easy replacement of the filter element, and preventing incorrect assembly or installation, which can lead to damage or inefficient filtration.
Innovation Solution
A filter device with a rotary anchoring system that guides and secures the housing parts in the correct orientation, preventing twisting or tilting, and includes a locking mechanism to ensure proper assembly and prevent air leaks, using a guiding and anchoring section that transitions from an insertion/extraction state to an anchoring state for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter element is securely anchored to prevent bypass flows, then filtration reliability is improved, but the complexity of the anchoring device increases
Solution Approach 1:
The anchoring device employs a rotary insert that can rotate between a locking position and an unlocked position, transforming a static anchoring mechanism into a dynamic one. This allows the same structure to provide secure anchoring during operation while enabling easy removal when needed, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The anchoring device is divided into separate functional components: a rotary insert with guiding section, a receptacle with anchoring section, and interaction elements. This segmentation allows each component to perform its specific function efficiently while simplifying the overall design and maintenance.
2Reliability
If the housing parts are firmly anchored to prevent air leaks, then filtration effectiveness is improved, but the ease of filter element replacement deteriorates
Solution Approach 1:
The rotary insert provides a dynamic anchoring mechanism that can be easily switched between locked and unlocked states through rotation. This allows the housing parts to be firmly anchored during operation to prevent air leaks, while enabling quick and tool-free removal for filter element replacement.
Solution Approach 2:
The anchoring device is designed to be operated without additional tools or complex procedures. The rotary insert can be manually rotated to lock or unlock the housing parts, allowing the system to serve itself during maintenance operations without requiring external assistance or specialized equipment.
3Manufacturing precision
If the anchoring device provides guiding function to prevent incorrect assembly, then assembly correctness is improved, but the device complexity increases
Solution Approach 1:
The guiding section and anchoring section are merged into a single integrated rotary insert mechanism. The guiding section with its shaped cross-section provides form-fit guidance to ensure correct assembly orientation, while the same section interacts with the receptacle to provide anchoring. This merging eliminates the need for separate guiding and anchoring components, reducing overall complexity.
Solution Approach 2:
The guiding section employs asymmetric cross-sectional shapes that only fit together in the correct orientation. This asymmetric design provides built-in guidance that prevents incorrect assembly without requiring additional symmetric locking mechanisms, simplifying the overall device structure.
4Adaptability or versatility
If the rotary insert provides both guiding and anchoring functions, then functional integration is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The guiding section and anchoring section are merged into a single rotary insert component that performs both functions. The guiding section provides form-fit guidance through its shaped cross-section, while the same section interacts with the receptacle to provide anchoring. This integration reduces the number of parts and interfaces, thereby reducing cumulative tolerance requirements compared to separate components.
Data Source
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AI summary
A filter device (10) for filtering fluid, in particular combustion air from an internal combustion engine, is described. The filter device (10) comprises a filter housing (12) composed of at least two housing parts (14, 16). The filter housing (12) has an inlet for the fluid to be filtered and an outlet for the filtered fluid. Furthermore, a detachable anchoring device (18) is provided for connecting the two housing parts (14, 16). The anchoring device (18) has a rotary insert (30) with a guide and anchoring section (32) that is rotatably connected to a first of the housing parts (16). The anchoring device (18) also has a receptacle (34) that engages positively with the guide and anchoring section (32) and is connected to a second of the housing parts (14).