Braided Elastic Terminal Structure for High-Speed Board Connectors
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Solution Overview
Problem
Existing elastic terminals for connectors, such as L-shaped or C-shaped cantilever beam terminals and cylindrical elastic terminals, face issues of high production costs, low processing efficiency, and unstable signal transmission due to complex structures and assembly difficulties, which hinder high-speed performance and high-density arrangements.
Innovation Solution
An elastic terminal with a cylindrical body of a meshy cylinder structure enclosed by a braided layer of conductive filaments, allowing for axial elastic deformation, improved production efficiency through batch manufacturing, and enhanced stability and reliability through braided layer arrangements and a core shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a cantilever beam terminal is used, then elastic contact is achieved, but the transmission path becomes long and high-speed performance cannot be met
Solution Approach 1:
The terminal body is divided into a contact portion and a support portion, with the contact portion having a reduced height design. This segmentation allows the signal transmission path to be shortened while the support portion provides the necessary elastic support, resolving the contradiction between transmission speed and structural support.
2Speed
If the cantilever is made short to reduce transmission path, then high-speed performance is improved, but the terminal becomes prone to yield after compression
Solution Approach 1:
By separating the contact portion (shortened for high-speed performance) from the support portion (maintained for structural strength), the design achieves both short transmission path and sufficient compression resistance. The support portion with standard height provides the necessary elastic support to prevent yield.
Solution Approach 2:
The terminal uses a composite structure combining different geometric configurations in different regions. The contact portion has reduced height for short transmission path, while the support portion maintains standard height for structural integrity, creating a composite design that satisfies both requirements.
3Speed
If a cylindrical elastic terminal with spring pin is used, then high transmission rate is achieved, but the structure becomes complicated and production cost increases
Solution Approach 1:
The invention merges the elastic function and the support function into a single integrated terminal body structure. The terminal body itself provides both the short transmission path for high-speed performance and the structural support for compression resistance, eliminating the need for separate spring pins or complex assembly components.
Solution Approach 2:
The terminal body is designed to perform multiple functions simultaneously: it provides signal transmission with short path length, elastic support for contact pressure, and structural strength to resist compression. This multi-functional design simplifies the overall structure and reduces production complexity.
4Speed
If a wool button structure is used, then high transmission rate is achieved, but the winding process becomes complicated and production efficiency decreases
Solution Approach 1:
The invention merges the elastic mechanism and the support structure into a single molded terminal body. This eliminates the complex multi-step winding process required for wool button structures, allowing for more efficient production through methods such as injection molding or other suitable manufacturing processes.
Solution Approach 2:
The design changes the structural parameters from a wound wire configuration to a molded monolithic structure. This parameter change fundamentally simplifies the manufacturing process, improving production efficiency while maintaining the short transmission path necessary for high-speed performance.
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 solution enables high-speed signal transmission, reduced production costs, improved product consistency, and increased stability under dynamic loads, while maintaining reliable electrical contact and shielding effectiveness.
Implementation Method 1
the cylindrical body is of a meshy cylinder structure enclosed by a braided layer braided regularly by conductive filaments, and has an elastic stretching deformation ability in an axial direction by means of a braided structure
Implementation Method 2
the cylindrical body is of a meshy cylinder structure enclosed by a braided layer braided regularly by conductive filaments
Data Source
Figure 1~3
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Figure 7~9
AI summary
The present disclosure relates to the technical field of connectors, in particular to an elastic terminal, an electric connector, and a conductive connection assembly for a circuit board. The elastic terminal includes a cylindrical body with two ends having conductive contact portions abutted against a mated conductive terminal; and the cylindrical body is of a meshy cylinder structure enclosed by a braided layer braided regularly by conductive filaments, and has an elastic stretching deformation ability in an axial direction by means of a braided structure. The elastic terminal can elastically stretch and deform in the axial direction to achieve an elastic contact to another conductive terminal. A current transmission path is short, there is less surrounding air medium, and high-speed transmission can be achieved. During production of the cylindrical body, the conductive filaments can be braided regularly to form the braided layer by means of a braiding device, and the braided layer with a considerable length can be cut and welded to achieve batch and low-cost production of the terminals, significantly improve production efficiency, and ensure good product consistency and a high qualified rate of products, thereby reducing a production cost.