Coupling system for a suction device having guide contours, coupling elements, a suction-air-guiding component and suction device
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Solution Overview
Problem
Existing suction devices lack a sturdy and convenient coupling system for attaching accessories, leading to potential misalignment and unreliable connections.
Innovation Solution
A coupling system with guide contours and plug-in units that prevent twisting and ensure secure alignment, allowing for robust and reliable connections between suction device components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple coupling system is used for attaching accessories, then the device complexity is reduced, but the connection reliability and alignment precision deteriorate
Solution Approach 1:
The coupling system is divided into multiple functional components: a first coupling element with a connecting piece, a second coupling element with a receiving region, guide contours for alignment, and plug-in units for electrical connections. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The guide contours act as intermediary elements between the first and second coupling elements, providing a mediating mechanism that ensures precise alignment and prevents twisting during the connection process. This intermediary structure enables reliable connections without requiring complex alignment procedures.
2Manufacturing precision
If a coupling system without guide contours is used, then the manufacturing precision requirements are reduced, but the alignment precision and connection reliability deteriorate
Solution Approach 1:
The guide contours are designed to perform preliminary alignment action before the final connection is made. The complementary guide contours on the first and second coupling elements engage first, guiding the components into correct alignment and preventing twisting, thereby ensuring precise alignment without requiring extremely high manufacturing precision for all components.
3Ease of operation
If a coupling system allowing twisting is used, then the ease of operation is improved, but the connection reliability and structural integrity deteriorate
Solution Approach 1:
The guide contours are designed with asymmetric complementary shapes that naturally prevent twisting about the longitudinal axis while maintaining easy insertion. The asymmetric geometry ensures that only the correct orientation allows the guide contours to engage properly, providing intuitive guidance during operation while guaranteeing stable, twist-free connections.
4Reliability
If plug-in units are integrated into the coupling system, then the electrical connection reliability is improved, but the device complexity increases
Solution Approach 1:
The plug-in units are merged with the coupling elements, integrating electrical connection functionality directly into the mechanical coupling structure. This merging allows simultaneous achievement of mechanical connection and electrical connection through a single plugging action, improving electrical connection reliability without requiring separate complex electrical connection mechanisms.
Data Source
AI summary
A coupling system connects to different suction-air-guiding components of a suction device. The coupling system has a first coupling element with a connecting piece and a second coupling element with a receiving region for the connecting piece. The first coupling element further has a first plug-in unit, and the second coupling element has a second plug-in unit which forms an electrically conductive plug-in connection together with the first plug-in unit of the first coupling element. The connecting piece has a guide contour, and the second coupling element has a guide contour which is complementary thereto. The first plug-in unit has a depression with a wall which, starting from the bearing surface of the first coupling element, extends along the longitudinal axis into the housing of the first coupling element, and the guide contour on the connecting piece of the first coupling element extends along the longitudinal axis into the depression.