Electric Connector Ground Plate Locking and Crosstalk Reduction
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Solution Overview
Problem
Existing electric connectors face challenges in achieving high waterproof properties while maintaining reduced crosstalk between contacts, as forming a locking hole in the shell portion can compromise sealing and increase the risk of water ingress.
Innovation Solution
The design incorporates a planar ground plate with projecting portions between contacts, connected to ground metal parts on both ends, which are housed in separate connectors, allowing for secure fitting and locking without the need for a locking hole in the shell, thereby enhancing waterproofing and reducing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking hole is formed in the shell portion to enable connector fitting and locking, then the connector can be securely locked, but the waterproof property decreases due to compromised sealing
Solution Approach 1:
The locking function is extracted from the shell portion and transferred to the ground plate. The ground plate includes a locking protrusion that engages with a locking groove in the opposing connector, eliminating the need for locking holes in the shell and preserving waterproof sealing.
Solution Approach 2:
The ground plate is given multiple functions: it provides electrical grounding, reduces crosstalk between contacts, and enables mechanical locking. This multi-functionality eliminates the need for separate locking structures that would compromise waterproofing.
2Ease of operation
If a locking hole is formed in the shell portion, then connector fitting is enabled, but sealing becomes difficult and waterproof property decreases
Solution Approach 1:
The locking and fitting functions are extracted from the shell portion and implemented through the ground plate's locking protrusion and groove engagement. This allows the shell to remain fully sealed without holes or openings.
3Volume of moving object
If contacts are arranged close together, then connector size is reduced, but crosstalk between contacts increases
Solution Approach 1:
A ground plate is introduced as an intermediary structure between adjacent contacts. This ground plate acts as an electromagnetic shield that reduces crosstalk while allowing the contacts to be positioned closely together, thus reducing overall connector size.
Solution Approach 2:
The ground plate provides localized electromagnetic shielding between specific contacts. By placing grounding elements strategically between contacts, crosstalk is reduced in critical areas without requiring increased spacing between all contacts.
Data Source
AI summary
An electric connector includes a first connector 2 and a second connector 22. The first connector includes a first contact 4, a second contact 6, a plate like ground plate 8 arranged between the first and second contacts, and a first housing that holds the first contact, the second contact, and the ground plate. The second connector includes a third contact 30 connected to the first contact, a fourth contact 32 connected to the second contact, and a ground metal part arranged at both ends of the third and fourth contacts in a contact array direction and configured to be in contact with the ground plate, and a second housing that holds the third and fourth contacts and the ground metal part. The ground plate includes a projecting portion formed on both side surfaces in the contact array direction and come in contact with the ground metal part.