Metal-Synthetic Process Connection Interface for Twist-Resistant Sealing
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Solution Overview
Problem
Existing container and pipeline mountable measuring devices face challenges in securely connecting metal and synthetic material components without complex threading, adhesives, or welding, which are not feasible for all materials and can lead to unstable and potentially twisted connections.
Innovation Solution
A secure and simple connection is achieved by using a metal first component with an annular connection region and a synthetic material second component, where the second component's connection region is introduced into the first component's cavity, with a securement means that presses the second connection region against the first, forming a shape and force interlocking connection, eliminating the need for threading, adhesives, or welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screw threads are provided on both process connection and housing to connect them, then the connection is secured against twisting, but the manufacturing complexity increases significantly
Solution Approach 1:
The connection system is segmented into three distinct components: the process connection (metal), the connection element (separate component), and the housing (synthetic material). The connection element acts as an intermediary that simplifies the joining process while maintaining connection stability, eliminating the need for complex threading on both metal and synthetic components.
Solution Approach 2:
A separate connection element serves as an intermediary component between the metal process connection and the synthetic housing. This mediator provides the threading and connection mechanisms, allowing the synthetic housing to be connected without requiring its own threads, thus reducing overall manufacturing complexity while maintaining connection strength.
2Reliability
If welding is used to connect metal process connection with metal housing, then a fixed and sealed connection is achieved, but the solution is not feasible for synthetic material housings
Solution Approach 1:
The connection element is designed with universal adaptability to work with both metal process connections and synthetic material housings. It provides a unified connection interface that can accommodate different materials through standardized threading and connection mechanisms, making the system versatile across material types while maintaining reliable sealed connections.
Solution Approach 2:
The connection system utilizes parameter changes in material properties - the connection element is designed with specific mechanical properties that allow it to interface with both rigid metal components and more compliant synthetic materials. This enables adaptation to different material characteristics while maintaining connection integrity and sealability.
3Strength
If adhesive is used supplementally with screw threads for twist resistance, then the connection is secured against twisting, but the manufacturing process becomes even more complicated
Solution Approach 1:
The adhesive component is extracted and removed from the connection system. Instead of requiring supplementary adhesive application, the design achieves anti-twist capability through the structural geometry of the connection element and housing interface, eliminating the need for additional materials and simplifying the manufacturing process.
4Ease of manufacture
If a neck shaped section is introduced into the other part and secured by a snap ring, then the connection is simpler, but it is not shape-interlocked and not secured against twisting
Solution Approach 1:
The connection element and housing interface incorporate asymmetric geometric features including non-circular cross-sections and shaped engagement surfaces. This asymmetry creates inherent anti-twist capability by preventing rotational movement while maintaining a simple snap-fit insertion process, achieving both simplicity and rotational security.
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 solution provides a stable, twist-resistant connection that is easy to manufacture and maintain, preventing moisture and dirt ingress, and is suitable for various materials, including stainless steel and plastic, ensuring the electronic components remain protected.
Implementation Method 1
a securement means is present, which is dimensioned and positioned in such a manner that the securement means presses the second connection region at least sectionally against the first connection region
Data Source
AI summary
An apparatus for determining and/or monitoring at least one process variable of a medium, comprising at least one sensor element sensitive for the process variable, a process connection for securing the apparatus to a container or pipeline and a housing connected with the process connection. The apparatus has at least one, first component of metal and at least one, second component of synthetic material, wherein the first component and the second component are embodied as hollow bodies. An annular, first connection region is formed on the first component, wherein on the second component an annular second connection region is formed, whose outer diameter corresponds at least sectionally to the inner diameter of the first connection region. The second connection region is introduced into the first connection region, and a securement structure is present, which is dimensioned and positioned in such a manner that the securement structure presses the second connection region at least sectionally against the first connection region.