Asymmetric Screw Thread Profile for Secure Module Pairing
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Solution Overview
Problem
Existing screw connections in utility vehicles' pneumatic systems face challenges in user-friendliness, security, and adaptability due to standardized thread profiles, which can lead to incorrect cartridge usage and compatibility issues across different applications.
Innovation Solution
A screw connection system featuring a first connecting element with a reduced cross-sectional thread profile that is a subset of a standardized profile, allowing for compatibility with multiple thread profiles while ensuring secure engagement with specific profiles, using asymmetric and modified thread profiles to enhance connection strength and fluid-tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standardized screw thread profile is used, then compatibility and simple combination of different types of connection elements is achieved, but connection strength and security are reduced
Solution Approach 1:
The patent applies asymmetry by creating a thread profile that is asymmetric with respect to the thread axis, with different flank angles (first flank angle different from second flank angle). This asymmetric design provides both fluid-tight sealing and enhanced connection strength while maintaining compatibility through controlled engagement with standardized threads.
Solution Approach 2:
The patent applies local quality by having different thread flank characteristics at different locations around the thread axis. The first and second flanks have different angles and properties, allowing each part of the thread to perform different functions - one flank provides sealing while the other provides structural strength.
2Reliability
If material of different strengths is used for connection elements, then connection security is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the thread profile (flank angles, thread shape) rather than changing material properties. This allows achieving different strength characteristics through design parameters alone, maintaining manufacturing simplicity while improving connection security.
3Adaptability or versatility
If a reduced cross-sectional thread area is used, then adaptability to different threading profiles is improved, but connection strength is reduced
Solution Approach 1:
The asymmetric thread profile allows reduced cross-sectional area while maintaining strength by concentrating material where it is most effective - on the flanks that bear the load and seal the connection, rather than uniformly distributing material throughout the cross-section.
Data Source
AI summary
A thread is provided for a screw connection between a first module and a second module. A first connecting element of the first module has a first screw thread profile and a second connecting element of the second module has a second screw thread profile. The first screw thread profile is configured such that the first connecting element is suited to be screw-connected to the second connecting element. The first screw thread profile has a reduced cross-sectional thread area in relation to a standardized screw thread.