Filter Device Pin Alignment Guide Contour
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Solution Overview
Problem
The assembly of generic filter devices, particularly oil or fuel filters, is difficult due to the requirement for precise alignment of a pin on the ring filter element with a channel on the filter housing crucible, which can lead to the use of unauthorized elements and potential damage to internal combustion engines.
Innovation Solution
A tube-shaped dome with a guide contour on the filter housing crucible guides the ring filter element during assembly, ensuring precise alignment of the pin with the channel, thereby simplifying the assembly process and preventing the use of unauthorized elements by interacting with a guide element on the ring filter element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pin on the ring filter element engages in a channel on the filter housing crucible to ensure authorized element usage, then reliability is improved, but assembly difficulty increases
Solution Approach 1:
A guide element is introduced as an intermediary component that mediates between the pin on the ring filter element and the channel on the filter housing crucible. The guide element features a guide contour that interactively guides the pin into proper alignment with the channel during assembly, simplifying the assembly process while maintaining the reliability function of preventing unauthorized element usage
Solution Approach 2:
The guide element is pre-positioned on the filter housing crucible before assembly, with its guide contour already prepared to receive and guide the pin. This preliminary arrangement ensures that during assembly, the pin is automatically guided into the correct position without requiring complex alignment operations
2Manufacturing precision
If complex guide contours are used to guide the ring filter element during assembly, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
Instead of using a complex overall guide contour, the solution applies a simple localized guide feature on the guide element that interacts with the pin. The guide contour is designed with minimal complexity, featuring only the essential geometry needed to guide the pin into the channel, thereby reducing device complexity while maintaining sufficient guidance precision
Data Source
AI summary
A filter may include a filter housing having a filter housing crucible and a filter housing cover. A ring filter element may be arranged in the filter housing and have an axially projecting pin on a lower end disc. The pin may be configured to be received by a channel on the filter housing crucible side when the filter device is assembled. A tube-shaped dome may be arranged on the filter housing crucible and engage an inner chamber of the ring filter element and a guide contour may be arranged on a free end of the tube-shaped dome and interact with a guide element arranged on the ring filter element.