Wall-Mounted Plug Connector Shielding With Annular Lamella Contact
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Solution Overview
Problem
Existing plug connectors for wall openings face challenges in reliably shielding electrical connections, especially in the area of the wall bushing, where a simple and effective shielding solution is needed to ensure secure and functional electrical conductance.
Innovation Solution
A plug connector design featuring a circumferential, annular shield lamella contact on the inner circumference of the sleeve section, made of electrically conductive material, which establishes a continuous shield connection with a mating plug connector, optionally with resilient lamellas to compensate for component tolerances, and can be easily attached to the wall using fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shield connection is implemented in the wall feedthrough area, then electromagnetic shielding reliability is improved, but device complexity increases
Solution Approach 1:
The shield blade contact is nested within a circumferential groove of the sleeve section, with the outer circumference of the mating connector's sleeve section inserting into this groove to establish electrical contact. This nesting arrangement provides reliable shielding without requiring separate shielding components, thus improving shielding reliability while avoiding increased device complexity.
Solution Approach 2:
The shielding function is merged with the existing sleeve section structure by forming the shield blade contact directly on the inner circumference of the sleeve section's groove. This integration eliminates the need for separate shielding elements, achieving reliable electromagnetic shielding while maintaining simple connector design.
2Reliability
If resilient blades are used in the shield contact, then tolerance compensation is improved, but manufacturing complexity increases
Solution Approach 1:
The shield blade contact incorporates resilient blades that can elastically deform to accommodate dimensional variations and misalignments between mating connectors. This dynamic capability ensures reliable electrical contact despite manufacturing tolerances, improving contact reliability while the blade spring design remains compatible with standard manufacturing processes.
Solution Approach 2:
The resilient blades utilize elastic deformation to compensate for tolerance variations in the connector assembly. By leveraging the elastic properties of the blade material and geometry, the design automatically adjusts to dimensional variations, ensuring consistent electrical contact reliability without requiring complex tolerance control or additional adjustment mechanisms.
3Reliability
If a circumferential groove is formed in the sleeve section, then shielding connection is improved, but manufacturing complexity increases
Solution Approach 1:
The circumferential groove is segmented into multiple radial blades rather than forming a continuous ring. This segmentation allows the groove to be integrated into the sleeve section using standard machining or molding processes, maintaining manufacturing simplicity while providing reliable shield connection through the distributed blade contacts that accommodate radial and axial variations.
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
This design provides a structurally simple and functionally reliable shield connection between plug connectors, ensuring secure electrical conductance and robust functionality even in the wall bushing area, while allowing for easy attachment and tolerance compensation.
Implementation Method 1
the respective blade has a resilient action. This creates a shield blade contact that compensates for component tolerances and is therefore functionally robust.
Data Source
Figure 1~2
Figure 3
AI summary
A connector (100) for mounting on an opening (12a, b) of a wall (11) such that the connector, in the mounted state, passes through the opening and is fixed to the wall, wherein the connector has a mating face comprising at least one sleeve section (15a) of a housing jacket (15) made of an electrically conductive material and one or more plug contacts, is characterized in that a circumferential, annular shielding lamella contact (7b) is arranged on the inner circumference of the sleeve section (15a) in the region of the mating face, which can be electrically contacted by an outer circumference of a sleeve section (201) made of conductive material of a mating face of a mating connector (200) in order to realize a shield connection between the two connectors (100, 200).