An electrical connector

Abstract

The utility model discloses a kind of electric connectors, it is related to electric connector technical field. Including shell, terminal group, insulating matrix, the terminal group molding in the insulating matrix, and the contact part of the terminal group is exposed to the surface of the insulating matrix respectively, the welding part of the terminal group is respectively stretched out from the side of the insulating matrix, the terminal group includes ground terminal, positive terminal, signal terminal, the insulating matrix is installed in the shell;The terminal group between still be provided with mid-plate, the signal terminal contact part in the mid-plate and the terminal group is 0.08mm-0.11mm in thickness, at least two protrusions are further formed in one end of the mid-plate, the protrusion is flush with one end of the insulating matrix. The utility model sets up the signal terminal contact part in the mid-plate and the terminal group as 0.08mm-0.11mm in thickness, can form controlled electric field closed path and calculable impedance / coupling boundary.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically to an electrical connector. Background Technology

[0002] Thunderbolt 5 is a new generation of high-speed transmission interface standard launched by Intel. Based on the USB-C physical interface, it provides up to 80Gbps of bidirectional bandwidth and can be expanded to 120Gbps to meet the combined transmission needs of high-performance data, display and power. However, existing surface-mount Type-C connectors cannot maintain the required impedance consistency and low crosstalk level in the contact area and transition area under this speed condition, so it is difficult to stably meet the transmission consistency requirements of Thunderbolt 5. Utility Model Content

[0003] The purpose of this application is to provide a technical solution to address the problems mentioned in the background section.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] An electrical connector includes a housing, a terminal group, and an insulating substrate. The terminal group is molded into the insulating substrate, and the contact portions of the terminal group are exposed on the surface of the insulating substrate. The solder portions of the terminal group extend from the side of the insulating substrate. The terminal group includes a ground terminal, a positive terminal, and a signal terminal. The insulating substrate is installed inside the housing.

[0006] A partition plate is also provided between the terminal groups. The thickness of the partition plate in contact with the signal terminal in the terminal group is 0.08mm-0.11mm. At least two protrusions are formed at one end of the partition plate, and the protrusions are flush with one end of the insulating substrate.

[0007] Preferably, the thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.08 mm.

[0008] Preferably, the thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.09 mm.

[0009] Preferably, the thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.1 mm.

[0010] Preferably, the thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.11 mm.

[0011] Preferably, the side portion of the other end of the partition plate extends outward and protrudes into contact with the outer shell.

[0012] Preferably, at least one segment of a terminal on the side of the terminal group also extends outward and protrudes, and contacts the outwardly extending protruding portion of the partition plate.

[0013] Preferably, the total number of terminals in the terminal group is 24 pins.

[0014] Preferably, at least two positioning posts are formed at the other end of the insulating substrate.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] This invention sets the thickness of the contact portion between the partition plate and the signal terminal in the terminal group to 0.08mm-0.11mm, which can form a controlled electric field closed path and a calculable impedance / coupling boundary. The two protrusions at the end of the partition plate are flush with the end face, providing a corresponding geometric reference and limiting micro-displacement under load / thermal cycling. This results in greater stability and durability during assembly and service life, thus solving the problems of impedance discontinuity and crosstalk mismatch in Thunderbolt 5 transmission of existing surface-mount Type-C connectors, and significantly improving transmission stability and consistency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model.

[0019] Figure 2 This is a first-view perspective perspective view of the internal structure of this utility model.

[0020] Figure 3 This is a second-view perspective perspective view of the internal structure of this utility model.

[0021] Figure 4 This is a perspective view of the terminal assembly of this utility model.

[0022] Figure 5 This is a three-dimensional view of the partition plate of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Terminal group; 21. Grounding terminal; 22. Positive terminal; 23. Signal terminal; 3. Insulating substrate; 31. Positioning post; 4. Middle partition; 41. Protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 An electrical connector includes a housing 1, terminal groups 2, and an insulating substrate 3. The terminal groups 2 are molded within the insulating substrate 3, with contact portions of the terminal groups 2 exposed on the surface of the insulating substrate 3. Soldered portions of the terminal groups 2 extend from the sides of the insulating substrate 3. The terminal groups 2 include a ground terminal 21, a positive terminal 22, and a signal terminal 23. The insulating substrate 3 is installed within the housing 1. A spacer 4 is also provided between the terminal groups 2. The thickness of the contact portion between the spacer 4 and the signal terminal 23 in the terminal group 2 is 0.08mm-0.11mm. At least two protrusions 41 are formed at one end of the spacer 4, and the protrusions 41 are flush with one end of the insulating substrate 3.

[0026] The working principle of this utility model is as follows: In the contact area of ​​the signal terminal 23, the thickness h of the intermediate partition 4 in contact with the signal terminal 23 is 0.08mm-0.11mm, and the end of the intermediate partition 4 is provided with at least two protrusions 41 that are flush with the end face of the insulating substrate 3 for end geometric limit and tolerance constraint. When using this product, the thickness h is used as the dielectric height parameter of the local quasi-microstrip / stripline in the transmission line equation, wherein the single end is: Differential coupling is:

[0027] Z diff ~2Z0(1-0.48e -0.96s / h ),

[0028] Where w and t are the width and thickness of the terminals, s is the spacing between the terminals, and ε is the distance between terminals. r Let be the dielectric constant of the substrate / spacer 4. As can be seen from the equation...

[0029] Increase, Z0↓, Z diff ↓ (Impedance undershoot);

[0030] (Increased coupling / crosstalk);

[0031] This invention constrains h to 0.08mm-0.11mm, thus enabling Z... diffThe differential impedance is within the target window and the coupling coefficient k is limited, forming a controlled electric field closed path and a calculable impedance / coupling boundary. The two end protrusions 41 are flush with the end face, providing a corresponding geometric reference and limiting micro-displacement under load / thermal cycling. This makes h more stable and durable within the assembly and service life conditions, as designed in this scheme. This solves the problems of impedance discontinuity and crosstalk mismatch in Thunderbolt 5 transmission of existing surface-mount Type-C connectors, and significantly improves transmission stability.

[0032] Example 1: The thickness of the contact portion between the partition 4 and the signal terminal 23 in the terminal group 2 is 0.08 mm. Substituting into the formula:

[0033]

[0034] Among them: in this embodiment, the s / h value is the largest, e -0.96s / h With extremely small quantities, coupling / crosstalk is exponentially suppressed, making it suitable for Thunderbolt 5 electrical connector designs where crosstalk budgets are tight and differential mode conversion needs to be minimized.

[0035] Example 2: The thickness of the contact portion between the partition 4 and the signal terminal 23 in the terminal group 2 is 0.09 mm. Substituting into the formula:

[0036]

[0037] The advantage of this embodiment is that while maintaining low coupling, Z0 is slightly higher than h = 0.08, making it easier to fine-tune Z by adjusting w. diff Achieving preset targets (such as 85Ω) makes it suitable for Thunderbolt 5 connector designs that require both impedance and coupling constraints.

[0038] Example 3: The thickness of the contact portion between the partition 4 and the signal terminal 23 in the terminal group 2 is 0.1 mm. Substituting into the formula:

[0039]

[0040] Among them, the advantage of this embodiment is that it is located in the middle of the preset thickness dimension, and the sensitivity of the process tolerance is more balanced. Under the mass production fluctuation (±0.01mm level), the logarithmic change of Z0 and the exponential change of the coupling term are not drastic, which is suitable for the design of Thunderbolt 5 electrical connectors for mass production.

[0041] Example 4: The thickness of the contact portion between the partition 4 and the signal terminal 23 in the terminal group 2 is 0.11 mm. Substituting into the formula:

[0042]

[0043] The advantage of this embodiment is that it is located at the upper edge of the preset thickness dimension, providing a larger space for single-ended impedance improvement, which is convenient for scenarios with larger dielectric constants or thicker terminal plating. diff The value is increased to a preset value, which is suitable for lightning 5 electrical connector designs with a large pitch S between pairs or adjacent grounded shields.

[0044] Preferably, the other end of the partition 4 extends outward and protrudes to contact the outer shell 1. This protruding structure of the partition 4 forms physical contact with the outer shell 1, geometrically establishing a fixed connection path between the insulating medium and the metal shielding layer. When high-frequency signals are transmitted between adjacent terminals, the partition 4 can define the electric field boundary, and the contact with the outer shell 1 further forms a reference shielding surface, stabilizing the electric field distribution of the signal transmission channel. This structure effectively constitutes a local microstrip / stripline isolation condition, reducing the coupling effect of high-frequency electric fields between terminals, thereby reducing crosstalk. Simultaneously, the contact between the partition 4 and the outer shell 1 also limits the slight displacement of the partition 4 itself, ensuring the stability of the dielectric position and preventing fluctuations in high-frequency impedance due to insertion / removal or temperature changes.

[0045] Preferably, at least one segment of a terminal on the side of the terminal group 2 also extends outward and protrudes, contacting the outwardly extending protruding portion of the partition 4. When the GND grounding terminal 21 in the terminal group 2 is designed to extend laterally and form direct contact with the protruding portion of the partition 4, the electrical connector establishes a continuous conductive coupling path in its structure. The GND grounding terminal 21 not only serves as an electrical grounding terminal 21, but also forms a stable shielding reference surface through contact with the protruding portion of the partition 4, ensuring that adjacent signal terminals 23 have a fixed return path during high-frequency transmission and reducing the diffusion range of return current in space. As a result, the loop area of ​​the signal circuit is compressed, the transmission impedance is balanced and controlled, and crosstalk of high-frequency signals is further reduced. At the same time, the protruding portion of the GND grounding terminal 21 and the partition 4 form a local mechanical support point, which also improves the structural stability and avoids impedance fluctuations caused by dielectric displacement during signal transmission.

[0046] Preferably, the terminal group 2 has a total of 24 pins. This allows for faster Thunderbolt 5 data transmission.

[0047] Preferably, at least two positioning posts 31 are formed at the other end of the insulating substrate 3. The positioning posts 31 are geometrically integral with the insulating substrate 3 and are inserted into the PCB positioning holes during installation, forming mechanical limits in the vertical and horizontal directions. The arrangement of at least two positioning posts 31 creates a stable positioning reference in the plane, preventing the insulating substrate 3 from rotating or shifting during assembly and ensuring the alignment accuracy between the terminal group 2 and the PCB pads. The positioning posts 31 continue to provide structural constraints after soldering and can share some of the external insertion and extraction forces during operation, reducing the risk of the solder joints bearing stress alone.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrical connector, comprising a housing, a terminal group, and an insulating substrate, wherein the terminal group is molded within the insulating substrate, and the contact portions of the terminal group are respectively exposed on the surface of the insulating substrate, and the solder portions of the terminal group extend from the side of the insulating substrate, the terminal group including a ground terminal, a positive terminal, and a signal terminal, and the insulating substrate is mounted inside the housing; Its features are: A partition plate is also provided between the terminal groups. The thickness of the partition plate in contact with the signal terminal in the terminal group is 0.08mm-0.11mm. At least two protrusions are formed at one end of the partition plate, and the protrusions are flush with one end of the insulating substrate.

2. The electrical connector according to claim 1, characterized in that: The thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.08 mm.

3. The electrical connector according to claim 1, characterized in that: The thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.09 mm.

4. The electrical connector according to claim 1, characterized in that: The thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.1 mm.

5. The electrical connector according to claim 1, characterized in that: The thickness of the contact portion between the partition plate and the signal terminal in the terminal group is 0.11 mm.

6. The electrical connector according to any one of claims 1-5, characterized in that: The side portion of the other end of the partition plate extends outward and protrudes into contact with the outer shell.

7. The electrical connector according to claim 6, characterized in that: At least one of the terminals on the side of the terminal group also extends outward and protrudes, and contacts the outwardly protruding portion of the central partition.

8. The electrical connector according to claim 6, characterized in that: The terminal group has a total of 24 pins.

9. The electrical connector according to claim 6, characterized in that: At least two positioning posts are also formed at the other end of the insulating substrate.

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