Filter Bowl Anti-Twist Toothing Design
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Solution Overview
Problem
Existing motor vehicle filters, particularly those with threaded inserts, face issues with twisting during installation, leading to increased costs and assembly complexity due to the need for conventional anti-twist protection measures like sheet metal tabs or beads.
Innovation Solution
A filter design featuring a filter bowl with an annular threaded insert where the front edge of the insert has axial toothing and the collar has corresponding counter-toothing, forming an anti-twist device that eliminates the need for additional protection measures, reducing assembly complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional sheet metal tabs or beads are used for anti-twist protection, then twisting is prevented, but device complexity and manufacturing costs increase
Solution Approach 1:
The anti-twist function is merged with the threaded insert structure itself. The toothing on the front edge of the threaded insert engages with counter-toothing on the collar, integrating the anti-twist mechanism into the existing components rather than adding separate tabs or beads.
Solution Approach 2:
The anti-twist function is extracted from separate protective elements (tabs or beads) and implemented through the engagement between the toothing on the threaded insert and the counter-toothing on the collar.
2Stability of the object's composition
If conventional sheet metal tabs or beads are used for anti-twist protection, then twisting is prevented, but manufacturing costs increase
Solution Approach 1:
The anti-twist function is merged with the threaded insert structure itself. The toothing on the front edge of the threaded insert engages with counter-toothing on the collar, integrating the anti-twist mechanism into the existing components rather than adding separate tabs or beads.
3Manufacturing precision
If conventional positioning measures are used during assembly, then assembly precision is maintained, but assembly time increases
Solution Approach 1:
The toothing and counter-toothing are pre-formed on the threaded insert and collar respectively, so that positioning occurs automatically during insertion without requiring additional positioning measures or adjustments during assembly.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
The invention relates to a filter (1), for example an operating medium filter of a motor vehicle, comprising a filter cover (2) and a threaded insert (3) that can be inserted into the filter cover (2). An end edge (4) of the threaded insert (3) has at least one region with a toothing (5), and a collar (6) of the filter cover (2) has at least one corresponding region with a mating toothing (7). In a method for producing such a filter (1), the end edge (4) of the threaded insert (3) is provided with at least one region with a toothing (5), and a collar (6) of the filter cover (2) is provided with at least one corresponding region with a mating toothing (7).