EMC Connector 360 Shield Transfer via Rotating Support
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Solution Overview
Problem
Existing EMC connectors fail to achieve complete and effective shielding against electromagnetic interference (EMC radiation) with existing technologies, requiring improved methods for transferring the cable shield to the connector housing while minimizing installation effort and accommodating irregularities in braided shields.
Innovation Solution
A 360° shield connection is achieved by attaching the braided screen of a shielded cable to a conical disc support element, which is then clamped onto a collar in the connector housing, allowing for rotation of a plastic element to compensate for irregularities and increase tolerance during assembly, ensuring the shield is transferred effectively without gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the braided shield is attached to a support element and clamped onto a collar, then complete 360° shield transfer is achieved, but the device complexity increases
Solution Approach 1:
A support element (carrier element) is introduced as an intermediary component between the braided shield and the connector housing collar. This support element facilitates the 360° attachment of the shield to the housing while distributing mechanical stresses and simplifying the overall assembly process, thereby achieving complete shield transfer without proportionally increasing device complexity.
2Manufacturing precision
If the plastic element is made adjustable by rotation, then tolerance for cutting irregularities is increased, but the ease of operation decreases
Solution Approach 1:
The plastic element is designed with rotational adjustability, transforming it from a static component to a dynamic one. This allows the element to be rotated during assembly to accommodate irregularities in the cut braided shield, effectively compensating for manufacturing tolerances while maintaining relatively simple assembly operations through a single degree of freedom adjustment.
3Object-affected harmful factors
If the braided shield is completely transferred to the housing, then EMC radiation shielding is improved, but the installation effort increases
Solution Approach 1:
The support element is pre-formed with features that facilitate shield attachment, and the connector housing collar is pre-positioned to receive the support element. This preliminary preparation of components enables complete 360° shield transfer to be achieved more quickly during installation, reducing the time loss associated with complex assembly operations.
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 solution provides comprehensive shielding against EMC radiation with reduced installation complexity, accommodating braided shield irregularities and ensuring the shield is securely transferred to the connector housing without impairing assembly or function.
Implementation Method 1
a conductive component transfers the cable shield to the connector housing over the entire surface without gaps
Implementation Method 2
By rotating said plastic element, irregularities caused by shortening the braided shield can be compensated for
Data Source
Figure 1~2
Figure 3~6
Figure 7~9
AI summary
The connector has an insulating body (12) holding a contact element (51) provided at an ends of cable cores (52). The insulating body is arranged at a metal housing (11) adjacent to an insertion opening. A clamping cage (13) is arranged in the housing adjacent to a cable connecting opening and holds a shielded cable (17) in an inner space. A distance element is supported at the insulating body at a mating side, where the distance element with its cable sided end extends to the clamping cage. A shielding transition unit (14) is in electrical contact with a cable shield (18) and the housing.