Reversible USB Receptacle Staggered Terminals Signal Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional manufacturing methods for Type C USB receptacles often result in loose or extremely thin plastic encapsulation, leading to a risk of terminal damage and warping during plug insertion, due to limited punching and thinning processes.
Innovation Solution
A reversible USB receptacle design featuring a shielding middle plate with oppositely bent and extended material strip connecting portions, which are embedded deeper in an insulating body, reducing high-frequency signal interference and preventing warping by arranging high-frequency terminals in a staggered manner and omitting shielding between specific terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If punching and thinning technology is used to connect terminal groups to the plastic body, then the terminal groups can be fixed in the insulating body, but the plastic encapsulation becomes loose or extremely thin, causing terminals to be easily damaged
Solution Approach 1:
The terminal group is divided into multiple segments: contact portion, retaining portion, and material strip connecting portion. This segmentation allows each part to perform its specific function - the material strip connecting portion provides robust mechanical connection to the plastic body while the contact portion maintains electrical contact, resolving the contradiction between ease of manufacture and encapsulation integrity.
Solution Approach 2:
The terminal group extends in multiple dimensions: the material strip connecting portion extends beyond the front end of the shielding middle plate to embed deeper in the insulating body, while the contact portion remains exposed for electrical connection. This multi-dimensional arrangement strengthens the connection without compromising the encapsulation.
2Device complexity
If material strip connecting portions are arranged in a traditional aligned manner, then the structure is simple, but high-frequency signal interference occurs between the first and second terminal groups
Solution Approach 1:
The material strip connecting portions of the first and second terminal groups are arranged in a staggered asymmetric pattern rather than aligned symmetrically. This asymmetric arrangement increases the spacing between corresponding high-frequency terminals of opposite terminal groups, effectively reducing electromagnetic interference while maintaining structural simplicity.
Data Source
AI summary
A reversible USB receptacle having high-frequency transmission properties, including a shielding middle plate (50), first and second terminal groups (30, 40) respectively located at upper and lower sides of the shielding middle plate (50), and an insulating body (20) making first and second terminal groups (30, 40) and the shielding middle plate (50) be formed into one piece, the insulating body (20) including a base and (21) a butting tongue portion (22) extending forward from the base (21), first and second terminal groups (30, 40) respectively including contact portions (35, 45) exposed on upper and lower surfaces of the butting tongue portion (22), retaining portions (36, 46) formed by extending backward from the contact portions (35, 45), and welding pins (37, 47) formed by extending from the retaining portions, wherein first and second terminal groups (30, 40) further include bent portions (381, 481) formed by oppositely bending from front end edges of contact portions (35, 45), and material strip connecting portions (382, 482) extending from ends of bent portions beyond front end of the shielding middle plate (50), and the material strip connecting portions (382, 482) are embedded in the insulating body (20). The present disclosure can achieve high-frequency transmission and prevent the front end of the terminal from warping.