Air Filter Cartridge Snap Mounting for Leak-Resistant Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of filter cartridges in existing air filter devices is cumbersome and error-prone due to the need for precise insertion and rotation of bayonet pins, leading to potential leaks and malfunctions.
Innovation Solution
A snap connection mechanism is introduced, allowing for assembly and disassembly of filter cartridges through axial movement without rotational alignment, providing haptic and acoustic feedback when the final connection is achieved, and optionally incorporating a bayonet connection for additional security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bayonet fastening is used to assemble filter cartridges, then secure connection is achieved, but assembly becomes complex and error-prone
Solution Approach 1:
The connection interface is divided into two independent parts: the filter cartridge with bayonet pins and the base plate with bayonet holes. This segmentation allows each component to be simple while achieving secure connection through their interaction, reducing overall assembly complexity while maintaining reliability.
Solution Approach 2:
An adapter element is introduced as an intermediary component between the filter cartridge and the base plate. The adapter element includes both bayonet connection means and snap connection means, simplifying the interface design and reducing the complexity of direct bayonet assembly while ensuring reliable connection.
2Reliability
If bayonet pins are inserted and rotated to assemble filter cartridges, then secure fastening is achieved, but assembly time increases
Solution Approach 1:
The adapter element is pre-installed on the base plate before the filter cartridge is assembled. This preliminary action prepares the connection interface in advance, allowing the filter cartridge to be quickly attached without time-consuming alignment and rotation operations, thus reducing assembly time while maintaining fastening reliability.
Solution Approach 2:
The snap connection mechanism automatically aligns and secures the filter cartridge to the adapter element without requiring manual rotation or alignment operations. The self-aligning nature of the snap connection eliminates the need for precise manual positioning, significantly reducing assembly time while ensuring reliable fastening.
3Reliability
If axial sealing is compressed during bayonet fastening, then sealing is achieved, but leakage occurs over time due to gravity
Solution Approach 1:
The sealing mechanism transitions from a static compressed seal to a dynamic self-adjusting seal. The snap connection allows the axial sealing to dynamically adapt to the filter cartridge's position, compensating for gravity-induced compression at the bottom side and maintaining uniform sealing pressure throughout the connection interface, thus preventing leakage.
Solution Approach 2:
The snap connection provides haptic and acoustic feedback when the filter cartridge is correctly positioned, allowing the user to verify proper alignment and sealing contact. This feedback mechanism ensures that the axial sealing is evenly compressed and properly positioned, preventing leakage while maintaining sealing reliability.
4Ease of manufacture
If bayonet pins are inserted from the side of the filter cartridge, then connection is achieved, but assembly becomes error-prone without feedback
Solution Approach 1:
The snap connection mechanism provides immediate haptic feedback (clicking sensation) and acoustic feedback (clicking sound) when the filter cartridge is correctly positioned on the adapter element. This feedback allows users to verify proper insertion without visual inspection, significantly improving positioning accuracy while maintaining assembly ease.
Solution Approach 2:
The adapter element includes a color-coded indicator that changes or becomes visible when the filter cartridge is correctly positioned. This visual feedback mechanism helps users quickly verify proper alignment and positioning accuracy, making the assembly process both easy and reliable.
Data Source
AI summary
Air filter device including a base plate with a plurality of spaced-apart flow openings and a plurality of filter cartridges each having at least one gas filter medium, the base plate includes adjacent to the flow openings at least one mounting device for mounting one filter cartridge each on the base plate, the filter cartridges each having at least one counter mounting means corresponding to the mounting device that is brought into operative connection with the respective mounting device of the base plate. The mounting device being a snap connection and the corresponding counter mounting means being a counter snap connection, the snap connection and the counter snap connection forming a snap connection, and the counter snap connection brought into operative connection with the snap connection by an axial movement. An air filter cartridge and an adapter for the air filter device. A method for replacing the air filter cartridge.