Connector Shield Shell Segmentation for Insulation and Noise Control
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Solution Overview
Problem
Conventional connectors fail to maintain a desired insulation distance between the electrical connection parts and the shield members, leading to potential noise intrusion and inefficiencies in electrical connections.
Innovation Solution
A connector design featuring a conductive shield shell with a main shield and tubular sub-shields that cover the electric wire connecting parts and terminals, along with an insulating tubular member to ensure a secure insulation distance, while also incorporating a locking mechanism to prevent movement and enhance vibration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shield shell covers the housing and electric wires together, then noise reduction is improved, but the insulation distance between electrical connection parts and shield members becomes insufficient
Solution Approach 1:
The shield shell is divided into a main shield covering the housing and multiple tubular sub-shields covering individual electric wires. This segmentation allows the main shield to provide overall noise protection while sub-shields maintain proper insulation distances for each wire, resolving the contradiction between noise reduction and insulation requirements.
Solution Approach 2:
An insulating tubular member is introduced as an intermediary component between the electrical connection part and the shield member. This insulating member ensures the desired insulation distance is maintained while allowing the shield to effectively cover and protect the electrical components from noise.
2Ease of operation
If terminal fittings are inserted through the housing, then electrical connection is improved, but the terminal fittings may come off or move positionally
Solution Approach 1:
The terminal fitting includes a locked part and the housing includes a locking part that engages before final insertion. This preliminary locking action prevents the terminal fitting from coming off or moving positionally after insertion, while still allowing easy electrical connection during the insertion process.
Data Source
AI summary
A connector includes a terminal fitting, an insulating housing, and a conductive shield shell. The terminal fitting includes an electrical connecting part electrically connected to a mating terminal of a mating connector and an electric wire connecting part electrically connected to a terminal of an electric wire. The housing accommodates the electrical connecting part in an inward accommodation space and causes the electric wire connecting part to protrude outward. The shield shell accommodates a space from the housing to the terminal of the electric wire inward and covers the space from outside. The shield shell includes a main shield that covers the housing from outside and a tubular sub-shield that covers the electric wire connecting part and the terminal of the electric wire from outside and is provided for each of the terminal fitting.