Filter Assembly Cam Drive Mechanism for Secure Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing filter assemblies face challenges in ensuring correct assembly and preventing fluid leakage due to the lack of a secure connection mechanism between the filter element and the mount, which can lead to the use of incorrect filter elements with inappropriate filtration characteristics or sizes.
Innovation Solution
A filter assembly with a link element that slides axially between a retracted and deployed position, utilizing a cam drive mechanism formed by lugs and inclined ramp surfaces on the filter element and mount, ensuring proper alignment and secure engagement only when matched, thereby preventing incorrect assembly and fluid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple connection mechanism is used between filter element and mount, then ease of assembly is improved, but reliability of correct assembly and prevention of fluid leakage deteriorates
Solution Approach 1:
The cam drive mechanism employs asymmetric geometry where the cam profile on the mount and the corresponding follower on the filter element are shaped to work together in a specific orientation. This asymmetric design ensures that the filter element can only be correctly assembled in the proper rotational position, preventing incorrect assembly while maintaining ease of operation through the self-aligning cam action.
Solution Approach 2:
The cam drive mechanism utilizes curved surfaces including the cam profile and the follower contact surface. These curved geometries enable smooth rotational motion and automatic alignment during assembly, ensuring reliable engagement while maintaining ease of operation. The curved surfaces distribute contact forces and guide the filter element into the correct position.
2Reliability
If a secure connection mechanism is implemented, then reliability of preventing fluid leakage is improved, but device complexity worsens
Solution Approach 1:
The cam drive mechanism combines multiple functions into a single integrated system: it provides mechanical connection, ensures correct rotational orientation, creates sealing contact, and prevents incorrect assembly all through the interaction of the cam and follower components. This merging of functions achieves high reliability while minimizing the number of separate parts.
Solution Approach 2:
The cam drive mechanism serves multiple purposes simultaneously: it acts as a connection element, an alignment device, a sealing mechanism, and a prevention system for incorrect assembly. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving reliable fluid leakage prevention.
3Reliability
If matched lugs and ramp surfaces are required for cam drive, then reliability of preventing incorrect filter element use is improved, but ease of operation worsens
Solution Approach 1:
The cam drive mechanism is designed so that the cam profile and follower geometry are predetermined and pre-matched between the mount and filter element. This preliminary configuration ensures that when the filter element is approached for assembly, the cam and follower will automatically engage in the correct orientation, guiding the user through proper assembly without requiring knowledge of matching requirements.
Solution Approach 2:
The cam drive mechanism is self-checking and self-correcting: if a filter element with incorrect lugs or ramp surfaces is attempted to be installed, the cam and follower geometries will not properly engage, preventing assembly. If the correct filter element is used, the mechanism automatically guides itself into the proper position through the cam action, eliminating the need for user judgment about compatibility.
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 cam drive mechanism ensures secure and correct assembly of the filter element with the mount, reducing the likelihood of using incorrect filter elements and minimizing fluid loss by providing a reliable seal and connection.
Implementation Method 1
the lug and the ramp surface form a cam drive in which the lug is capable of engaging the inclined ramp surface as the filter element and the mount are brought together for assembly, and of sliding along the inclined ramp surface when the filter element is rotated relative to the mount to cause the link element to be drawn out of the mount towards its deployed position
Data Source
AI summary
A filter assembly comprises a filter element, and a mount having at least one port. Each of the filter element and mount has inter-engaging connection formations, where the filter element and mount can be detachably connected to one another. The mount defines a flow path between the port and filter element when the element is connected to the mount and includes a link element which can slide relative to the mount between retracted and deployed positions. The link element has one of a lug and an inclined ramp surface, and the filter element has the other of the lug and ramp surface. The lug and ramp surface form a cam drive where the lug engages the ramp surface as the filter element and mount are assembled, and slide along the surface when the element is rotated to draw the link element out of the mount towards its deployed position.