Shielded Electrical Receptacle with Segmented Grounding
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Solution Overview
Problem
Conventional USB connectors suffer from poor durability and inadequate shielding, leading to increased costs due to damage and reduced signal quality during high-frequency, radiofrequency, or Bluetooth signal transmission.
Innovation Solution
An electrical receptacle connector design featuring a mount member, insulated housing, first and second receptacle terminals, and a shielding plate, with conductive sheets and an inner and outer shell to establish a grounding circuit, enhancing shielding performance and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only the outer shell is provided for shielding, then the device complexity is reduced, but the shielding performance deteriorates due to gaps on the outer shell
Solution Approach 1:
The shielding structure is divided into multiple segments: an inner shell with first gaps, an outer shell with second gaps, and a shielding plate with third gaps. Each segment provides partial shielding, and their combined effect achieves superior overall shielding performance while maintaining manageable structural complexity.
Solution Approach 2:
The shielding structure employs a nested configuration where the inner shell is positioned inside the outer shell, and the shielding plate is arranged between terminal groups. This nested arrangement creates multiple shielding layers that work together to block electromagnetic waves effectively.
2Reliability
If the terminals are not firmly fixed, then the ease of manufacture is improved, but the durability deteriorates as front ends detach easily
Solution Approach 1:
The mounting structure integrates multiple fixing mechanisms into a unified system: the insulating housing combines snap-fit features with retention clips, while the mount member incorporates corresponding engagement structures. This merged approach provides durable terminal fixation through coordinated mechanical actions.
Solution Approach 2:
The insulating housing and mount member are designed with pre-formed engagement structures such as snap-fit features and retention clips that automatically secure terminals during assembly. This preliminary preparation of fixing mechanisms ensures durable terminal attachment without requiring additional complex assembly steps.
3Reliability
If a single shielding layer is used, then the device complexity is reduced, but the shielding effectiveness deteriorates during high frequency transmission
Solution Approach 1:
Different regions of the shielding structure have specialized characteristics: the inner shell provides baseline shielding, the shielding plate offers enhanced protection between terminal groups, and the outer shell adds final shielding layers. Each component is optimized for its specific location and function, achieving superior overall shielding effectiveness.
Solution Approach 2:
The shielding structure extends into multiple spatial dimensions with the inner shell, outer shell, and shielding plate arranged in different positions and orientations. This multi-dimensional configuration creates comprehensive electromagnetic wave blocking paths that a single planar shield cannot achieve.
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
The design improves the connector's durability and shielding effectiveness, reducing electromagnetic interference and radiofrequency interference, thereby extending product life and maintaining signal quality during high-frequency transmissions.
Implementation Method 1
The first conductive sheet and the second conductive sheet are above and below the insulated housing, respectively, for shielding the first receptacle terminals from the second receptacle terminals
Implementation Method 2
The two first contact legs pass through two first through holes of the insulated housing and are in contact with two first ground terminals which are at two sides of the first receptacle terminals, respectively
Data Source
AI summary
An electrical receptacle connector includes a mount member, an insulated housing, first receptacle terminals, second receptacle terminals, and a shielding plate. The insulated housing is molded with the mount member and forms a tongue portion. Each of the first receptacle terminals includes a first flat contact portion and a first tail portion. The first flat contact portion is on a lower surface of the tongue portion, and front ends of the first flat contact portions are held in the tongue portion. Each of the second receptacle terminals includes a second flat contact portion and a second tail portion. The second flat contact portions are on an upper surface of the tongue portion, and front ends of the second flat contact portions are held in the tongue portion. The shielding plate is on the tongue portion and between the first receptacle terminals and the second receptacle terminals.