Air Filter Assembly Locking for Easier Cartridge Service
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing air filter assemblies for internal combustion engines face challenges in assembly, serviceability, and ease of replacing filter cartridges, which are often cumbersome and require improvements for efficient maintenance.
Innovation Solution
An air cleaner assembly with a housing, filter cartridge, and a lock mechanism that allows secure installation and removal of the cartridge only when properly positioned, featuring modular inlet and outlet assemblies with snap-fit connections and removable dust ejection ports for enhanced assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional filter cartridge design is used, then the filtering function is provided, but the assembly and removal of the filter cartridge is cumbersome and requires complex procedures
Solution Approach 1:
The filter assembly is divided into separate modular components: a reusable housing and a replaceable filter cartridge. The housing contains mounting structures and locking mechanisms, while the cartridge contains the filtering element. This segmentation allows the filter cartridge to be independently removed and replaced without disassembling the entire housing, significantly simplifying the service procedure.
Solution Approach 2:
The locking mechanism incorporates movable locking elements that can transition between locked and unlocked states. The locking elements are biased by springs and can be actuated to release the filter cartridge for removal or engage to secure it in place. This dynamic capability enables easy installation and removal while maintaining secure fixation during operation.
2Reliability
If a secure locking mechanism is implemented, then the filter cartridge is firmly secured within the housing, but the mechanism for securing and releasing becomes more complex
Solution Approach 1:
The locking mechanism is designed to be self-actuating through spring biasing. When the filter cartridge is inserted, the locking elements automatically engage with the cartridge features without requiring additional actuation. Similarly, when removal is needed, the locking elements can be easily disengaged by simple manual operation. This self-service capability provides reliable securing while minimizing mechanism complexity.
Solution Approach 2:
The locking mechanism uses intermediate locking elements that mediate between the filter cartridge and the housing. These locking elements translate the simple insertion motion into secure engagement and can be easily actuated for release. The intermediary components simplify the interaction between user and system while ensuring reliable locking.
3Ease of manufacture
If modular inlet and outlet assemblies with snap-fit connections are used, then assembly and maintenance becomes easier, but the connection strength may be reduced compared to traditional fastening methods
Solution Approach 1:
The inlet and outlet assemblies are designed as separate modular units that can be independently assembled, maintained, and replaced. Each assembly features snap-fit connection elements that enable tool-free assembly and disassembly. This modular segmentation facilitates ease of manufacture and maintenance while the snap-fit connections provide sufficient strength for the application through proper design of the engagement features.
Data Source
Figure 1
Figure 1A
Figure 1B
AI summary
An air cleaner assembly is disclosed. In one aspect, the air cleaner assembly includes a housing defining an inlet and an outlet, and including an access opening between the inlet and outlet. The air cleaner also includes a filter cartridge received within the housing and covering the access opening. The air cleaner also includes a lock mechanism. The lock mechanism is movable between an unlocked position in which the filter cartridge can be installed and removed from the housing and a locked position in which the filter cartridge is secured within the housing. The filter cartridge and lock mechanism include interacting features allowing the lock mechanism to be moved from the unlocked position to the locked position only when the filter cartridge is installed within the housing.