Sanitary Valve Cap Interface for Multi-Orientation Assembly
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Solution Overview
Problem
The existing push-push actuation mechanism valves require increased concentration during assembly to ensure correct orientation, leading to potential incorrect joining of parts, and existing solutions do not simplify the production of fittings with multiple orientation options.
Innovation Solution
The cap interface is designed to allow connection in multiple orientations, while the fitting interface allows insertion in fewer orientations, enabling a large number of mounting orientations without increased machining complexity, with features like rotational symmetry, snap-action connections, and threads for flexible and error-correctable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cap interface allows connection in multiple orientations (n orientations), then the flexibility and ease of assembly are improved, but the manufacturing complexity of the interface increases
Solution Approach 1:
The patent applies asymmetry by designing the cap interface with an asymmetric peripheral contour that naturally guides the covering cap into the correct rotational position. The asymmetric shape creates a unique fit that prevents incorrect orientations while maintaining simplicity in the interface design, resolving the contradiction between multiple mounting orientations and manufacturing complexity.
2Ease of operation
If the fitting interface allows insertion in multiple orientations, then the ease of assembly is improved, but the reliability of correct orientation decreases due to increased concentration requirements
Solution Approach 1:
The asymmetric peripheral contour at the fitting interface provides mechanical guidance that automatically ensures correct orientation during assembly. The asymmetric shape physically prevents incorrect orientations, eliminating the need for increased operator concentration and thereby maintaining both ease of assembly and orientation accuracy.
Solution Approach 2:
The asymmetric interface design enables self-alignment during assembly, where the components automatically orient themselves correctly through the mechanical guidance of the asymmetric contour. This self-service mechanism ensures reliable orientation without requiring operator attention or intervention, resolving the contradiction between ease of assembly and orientation accuracy.
3Manufacturing precision
If rotational symmetry is implemented at the cap interface, then the manufacturing precision is improved through standardized features, but the ease of manufacture decreases due to increased machining requirements
Solution Approach 1:
The patent rejects rotational symmetry in favor of an asymmetric peripheral contour that provides unique orientation definition without requiring complex machining. The asymmetric shape can be manufactured with standard machining processes while still achieving precise orientation definition, thereby resolving the contradiction between manufacturing precision and ease of manufacture.
Data Source
AI summary
In a sanitary valve (1) having a push-push actuation mechanism (2), a cap interface (5) is provided between a cover cap (6) and an actuating element (3) having a higher rotational symmetry than a fitting interface (8) between the valve (1) and a fitting (9).