Air Dryer Cartridge Cover Assembly for Spring Stability and Secure Attachment
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Solution Overview
Problem
Conventional air dryer cartridges suffer from unstable spring-loaded mechanisms due to inadequate structural support, leading to displacement, wear, and potential breakage, while weak fastening mechanisms cause accidental disengagement and leakage, necessitating additional components for secure attachment.
Innovation Solution
An air dryer cartridge with enhanced design features, including a cover assembly that provides robust support and guidance for the compression spring through complementary supporting elements, ensuring secure attachment to the carrier without additional fasteners, and distributing mechanical loads evenly across mating surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the spring-loaded mechanism is only partly supported at one side through the desiccant cover, then the structure is simpler, but the mechanism becomes unstable and prone to displacement
Solution Approach 1:
The support function is segmented between two distinct elements: the desiccant cover provides partial support while the spring cover with its supporting element provides additional support and guidance. This segmentation allows each component to have a specific support role, improving overall stability without significantly increasing complexity.
Solution Approach 2:
The supporting element in the spring cover acts as an intermediary component that mediates between the spring and the housing, providing proper alignment and support. This intermediary element prevents direct unstable contact between the spring and the desiccant cover alone, resolving the stability issue.
2Ease of manufacture
If conventional fastening mechanisms are used to attach the cartridge to the carrier, then the attachment process is simpler, but the connection is susceptible to accidental disengagement and breakage
Solution Approach 1:
The fastening mechanism incorporates dynamic elements such as resilient arms with lugs that can flex and engage with corresponding features on the carrier. This dynamic design allows for secure engagement that can accommodate minor misalignments and vibrations while preventing accidental disengagement, maintaining ease of manufacture through simple snap-fit or bayonet-style connections.
3Reliability
If additional fasteners are used to protect weak connections, then connection security is improved, but the device complexity increases
Solution Approach 1:
The fastening function is merged into the cartridge housing and cover assembly themselves, rather than being separate additional components. The resilient arms, lugs, and engagement features are integrated into the existing structure, providing secure attachment without requiring separate fasteners like plastic straps or bands, thus improving reliability while avoiding increased complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The improved design stabilizes the spring-loaded mechanism, preventing displacement and breakage, enhances operational efficiency, and ensures secure connections, reducing maintenance needs and extending the cartridge's lifespan.
Implementation Method 1
the cover assembly comprises a compression spring and an outer cover element
Implementation Method 2
the cover assembly is configured to cover the container and apply a predetermined tension to the desiccant material within the container
Implementation Method 3
The compressed air undergoes a drying process to remove moisture and oil contaminations
Implementation Method 4
maintaining pressure on a desiccant (desiccant material or filter element). This ensures proper sealing and contact for effective filtration and moisture absorption
Implementation Method 5
Potential wear and friction of the desiccant material over time due to constant vibrations
Implementation Method 6
the air dryer cartridge, in particular outer cover element, comprises a (first) supporting element configured for guiding (supporting) the compression spring
Data Source
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AI summary
The present invention refers to an air dryer cartridge (100) for an air treatment device of a vehicle, especially a utility vehicle, wherein the air dryer cartridge (100) comprises a container (104) and a cover assembly (106), wherein the container (104) is configured to be mounted onto the air treatment device and includes a desiccant material (105), wherein the cover assembly (106) is configured to cover the container (104) and apply a tension to the desiccant material within the container (104), wherein the cover assembly (106) comprises a compression spring (108) and an outer cover element (110), wherein the outer cover element (110) is configured for secure attachment to the container, wherein the air dryer cartridge, in particular the outer cover element (110), comprises a first supporting element (112) configured for guiding and/or supporting the compression spring (108).Further, the present invention refers to an air treatment device for a vehicle, especially a utility vehicle, comprising an air dryer cartridge (100, 200) as outlined.