Spin-On Filter Gasket Structure for Secure Sealing Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Spin-on filter systems often experience gasket dislodgment during installation, leading to inadequate sealing and leaks due to misalignment and manufacturing tolerances, which results in ineffective filtration.
Innovation Solution
A sealing gasket with an annular member featuring upper and lower sealing bodies, chamfered surfaces, and extending members with angled lips to securely engage the filter head and housing, reducing the likelihood of dislodgment and ensuring proper sealing by compensating for manufacturing tolerances and applying optimal contact forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is stretched and placed into a groove within the filter head, then the gasket can be retained while the spin-on filter engages and is screwed into place, but the gasket may fall out of the groove during installation due to mounting position and manufacturing tolerances
Solution Approach 1:
The gasket is divided into two distinct sealing bodies (upper and lower) with different functional characteristics. The upper sealing body has a smaller outer diameter for engagement with the filter head groove, while the lower sealing body has a larger outer diameter for engagement with the filter housing. This segmentation allows each portion to perform its specific function optimally without compromising the other.
Solution Approach 2:
The gasket transitions from a traditional single-plane design to a three-dimensional structure with varying radial depths. The upper and lower sealing bodies are positioned at different axial heights, creating a stepped configuration that engages with different surfaces of the filter assembly. This dimensional change enables the gasket to maintain retention in the filter head groove while simultaneously providing sealing contact with the filter housing.
2Ease of operation
If the filter head is mounted in a position that allows engagement, then the spin-on filter can be installed, but the gasket may fail to make a proper seal resulting in leaks
Solution Approach 1:
Different regions of the gasket are given different properties and functions. The upper sealing body is optimized for retention in the filter head groove with chamfered surfaces for proper positioning, while the lower sealing body is optimized for sealing contact with the filter housing. This local differentiation ensures that each part of the gasket performs its specific function effectively regardless of the filter head mounting position.
Solution Approach 2:
The gasket is pre-formed with the asymmetric two-body configuration before installation. The upper sealing body with its smaller outer diameter is designed to be inserted into the filter head groove first, where it is retained in place. This preliminary positioning ensures the gasket is correctly situated before the filter housing is engaged, preventing dislodgment during installation.
3Device complexity
If a traditional gasket design is used, then the structure is simple, but the gasket is likely to be dislodged during installation due to misalignment and manufacturing tolerances
Solution Approach 1:
The gasket employs an asymmetric design where the upper sealing body has a smaller outer diameter than the lower sealing body. This asymmetry is intentional and functional: the smaller upper portion fits into the filter head groove for retention, while the larger lower portion provides sealing contact with the filter housing. The asymmetric configuration compensates for misalignment and manufacturing tolerances by providing built-in alignment features through the chamfered surfaces.
Data Source
AI summary
Briefly, the present invention relates, in one embodiment, to a gasket for sealing a filter housing to a filter mount. The gasket may have an upper body and a lower body which seals between the filter housing and filter head. The gasket may include chamfered surfaces to allow for properly sealing against manufacturing tolerances, and may include an annular groove which receives the filter housing and stabilizes the gasket during installation.