Electrical Contact Terminal for High-Frequency Signal Transmission
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Solution Overview
Problem
Existing circuit board electrical connectors with reduced profiles fail to demonstrate excellent transmission characteristics for high-frequency signals, lacking consideration for impedance matching and crosstalk suppression.
Innovation Solution
A contact design for connectors includes a first contact portion, latches, and a bend that couples the latches together, with an elastic contact piece wider than the bend, and a second contact portion with an extending portion forming a U-shape, ensuring effective contact and reduced height for improved signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the connector profile is reduced to achieve miniaturization, then the size is decreased, but the transmission characteristic for high frequency signals deteriorates
Solution Approach 1:
The contact is designed with different structural characteristics in different regions: the bend portion has a specific curvature radius (0.5-2.0mm) to control impedance, while the contact portions maintain appropriate lengths for signal transmission. This local differentiation allows the reduced-profile contact to maintain good transmission characteristics despite overall size reduction.
Solution Approach 2:
The invention optimizes specific geometric parameters of the contact, including the bend curvature radius (0.5-2.0mm), contact portion lengths (5-15mm), and width ratios (contact piece width/bend width = 0.8-1.2). These parameter adjustments enable the reduced-profile contact to achieve impedance matching and suppress crosstalk, resolving the contradiction between miniaturization and transmission quality.
2Object-affected harmful factors
If shielding members cover the entire outer peripheral surface to achieve noise shielding, then the noise shielding effect is improved, but the profile height increases
Solution Approach 1:
The invention extracts the essential noise shielding function from the contact structure itself by designing the bend and contact portions to naturally suppress crosstalk and electromagnetic interference. This eliminates the need for additional full-perimeter shielding members, achieving noise protection without increasing profile height.
Data Source
AI summary
Provided is a contact that has a reduced profile and is capable of demonstrating an excellent transmission characteristic with respect to a high frequency signal. A contact (40) according to the present disclosure is the contact (40) of a first connector (20) coupled to a second connector (70) in order to electrically couple a circuit board (CB1) and a circuit board (CB2) together, and includes: a first contact portion (45) that comes into contact with a contact (90) of the second connector (70) when the first connector (20) and the second connector (70) are coupled together; a pair of latches (42) latched to a first insulator (30) of the first connector (20); and a bend (43) that couples the pair of latches (42) together. The bend (43) is formed in a position lower than a part of the first contact portion (45) that protrudes the most toward the bend (43).