Shielded Board Connector Structure for Mold Hole Noise Leakage
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Solution Overview
Problem
Conventional board connectors suffer from noise leakage through mold removal holes, compromising shielding performance.
Innovation Solution
A board connector design featuring a closing portion for the mold removal hole, aligned and fixed by a flange and locking projections/recesses, ensuring the connector housing and outer conductor are securely positioned and electrically connected to a metal case for enhanced shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mold removal hole is formed in the back wall of the connector housing, then the stopper can be formed and locked to the mating connector, but noise generated from the circuit board leaks to the outside through the mold removal hole
Solution Approach 1:
An outer conductor is introduced as an intermediary component between the mold removal hole and the external environment. The outer conductor includes a closing portion that selectively blocks the mold removal hole, serving as a mediator that allows the stopper to pass through during assembly while preventing noise leakage during operation. This resolves the contradiction by adding an intermediate element that fulfills both requirements.
Solution Approach 2:
The outer conductor is designed with differentiated local properties: it is open in regions where the stopper and inner conductor need to pass through, but includes a closing portion that blocks the mold removal hole. This local differentiation allows the structure to simultaneously enable stopper locking functionality while preventing noise leakage through the mold removal hole.
2Object-affected harmful factors
If the outer conductor includes a closing portion to block the mold removal hole, then noise shielding is improved, but the alignment and positioning between the connector housing and outer conductor becomes more complex
Solution Approach 1:
The alignment and positioning functions are merged into the basic structural interfaces between the connector housing and outer conductor. The outer conductor is designed with an outer periphery that fits within the connector housing, and the closing portion is integrated into the outer conductor body rather than being a separate component. This merging reduces the number of additional alignment features needed while maintaining effective noise shielding.
Solution Approach 2:
The outer conductor serves multiple functions simultaneously: it provides noise shielding by blocking the mold removal hole, accommodates the inner conductor, and provides structural support for positioning within the connector housing. This multi-functionality reduces the need for separate alignment mechanisms, as the outer conductor's structural form fulfills both shielding and positioning requirements.
Data Source
AI summary
A board connector 10 to be mounted on a circuit board 50 is provided with a connector housing 11 including a receptacle 15 and a back wall 30 provided on a side opposite to an opening direction of the receptacle 15, a mating connector 70 being fit into the receptacle 15, an outer conductor 20 disposed in an outer conductor mounting hole 34 formed to penetrate through the back wall 30, an insulating dielectric 19 disposed inside the outer conductor 20, and an inner conductor 18 disposed inside the dielectric 19. The outer conductor 20 includes a closing portion 25 for closing a mold removal hole 32 formed at a position of the back wall 30 different from the outer conductor mounting hole 34.