Electrical Connection Device EMI Shielding and Secure Mounting
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Solution Overview
Problem
Existing electrical connection devices suffer from leakage of Electromagnetic Interference (EMI) due to openings in the rear wall, and issues with latching due to size tolerance between the mounting feature and the receptacle shell, leading to either failure to latch or loosening.
Innovation Solution
An electrical connection device with a shell featuring a first clip structure formed by stamping the rear wall, a holding member with a second clip structure that cooperates with the first clip structure for secure mounting, and a light guiding member with integrated features to reduce EMI leakage, including a grounding member with elastic fingers and latching arms to enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an opening is provided in the rear wall for mounting the mounting feature, then the mounting feature can be installed to fix the light pipe, but Electromagnetic Interference (EMI) leaks from the opening
Solution Approach 1:
A grounding member is introduced as an intermediary component between the mounting feature and the rear wall. The grounding member includes a grounding body that covers the opening in the rear wall and elastic fingers that provide electrical connection, thereby blocking EMI leakage while maintaining the mounting function.
Solution Approach 2:
The grounding member utilizes elastic fingers made of flexible conductive material that can deform to accommodate the opening while maintaining continuous electrical contact. This flexible structure effectively seals the opening against EMI leakage while preserving the mounting capability.
2Reliability
If the size of the mounting feature is smaller than the distance from the bottom edge of the opening to the bottom edge of the rear wall due to tolerance, then the mounting feature cannot latch to the rear wall, but when the size is larger, latching is easily loosened
Solution Approach 1:
The grounding member incorporates elastic fingers that can dynamically adjust their position and deformation degree. This dynamic flexibility allows the grounding member to accommodate variations in mounting feature size due to manufacturing tolerance while maintaining reliable latching engagement and consistent EMI shielding.
Solution Approach 2:
The elastic fingers can change their physical state (deformation degree, contact pressure) in response to variations in mounting feature dimensions. This parameter adaptation ensures reliable electrical connection and mechanical latching across the tolerance range without loosening or failure to engage.
Data Source
AI summary
The present disclosure provides an electrical connection device that includes a shell, a holding member and a light guiding member. The shell has a front end insertion opening and a rear wall. The rear wall is formed with a first clip structure, and the first clip structure has a sheet body which is integrally formed rearwardly by the rear wall. A clip hole is defined between the sheet body and the rear wall. The holding member has a holding body and a second clip structure which is integrally formed from the holding body and correspondingly cooperates with the first clip structure. The second clip structure has a first arm which is inserted into to the clip hole with an interference fit. A plurality of light guiding pipes are inserted into to the holding body of the holding member.