Electric connector
By designing ground terminals and signal terminals of multiple transmission paths in the electrical connector, the problem of high-frequency performance affected by crosstalk is solved, and better high-frequency performance is achieved.
Patent Information
- Application Number
- CN202420280434.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-05
AI Technical Summary
With the increase in high frequency demand, the number of electrical connector terminals increases, resulting in serious crosstalk problems between adjacent terminals, affecting high frequency performance.
An electrical connector is designed, and its ground terminal and signal terminal are connected to the docking element through multiple transmission paths, ensuring that the ground return path of the ground terminal is more than the transmission path of the signal terminal, and matching the impedance by adjusting the capacitance of the signal terminal, thereby reducing crosstalk.
By increasing the number of transmission paths of the ground terminal and the capacitance adjustment of the signal terminal, crosstalk between the signal terminals is effectively reduced and the high-frequency performance of the electrical connector is improved.
Smart Images
Figure CN222654491U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to an electric connector, in particular to an electric connector for improving crosstalk. [Background technology]
[0002] As the public's demand for high frequencies becomes higher and higher, in order to achieve more functions and higher quality of electronic products, the number of terminals of electrical connectors is increasing, so the distance between terminals is getting smaller and smaller, and more serious crosstalk interference will occur between adjacent differential signal terminal pairs (or adjacent single-ended signal terminals), thereby affecting the high-frequency performance of the electrical connector.
[0003] Therefore, it is necessary to design a new electrical connector to improve the above defects. [Utility Model Content]
[0004] The invention aims to provide an electrical connector which can improve crosstalk and enhance high frequency performance.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An electrical connector comprises: an insulating body; a plurality of grounding terminals and a plurality of signal terminals arranged side by side on the left and right sides, respectively accommodated in the insulating body, each grounding terminal comprises a grounding frame portion, a grounding arm extends from the upper end of the grounding frame portion so that at least three transmission paths are formed between the grounding frame portion and a docking element; the signal terminal comprises a signal frame portion, a signal arm extends from the upper end of the signal frame portion so that at least two transmission paths are formed between the signal frame portion and the docking element; wherein the number of transmission paths formed between the grounding frame portion of each grounding terminal and the docking element is greater than the number of transmission paths formed between the signal frame portion of each signal terminal and the docking element.
[0007] Furthermore, looking from top to bottom, the area enclosed by the ground frame is larger than the area enclosed by the signal frame, two adjacent signal terminals on the left and right form a differential signal pair, and at least one differential signal pair is surrounded by multiple ground terminals on all four sides.
[0008] Furthermore, the ground frame portion exceeds the signal frame portion in the front-rear direction.
[0009] Furthermore, the grounding frame portion has two opposite first side walls and two opposite second side walls connecting the two first side walls, the length of the first side wall is greater than the length of the second side wall, each grounding terminal has three grounding arms, one grounding arm extends upward from one of the first side walls and two grounding arms extend upward from the other first side wall, and a grounding contact portion is formed on the top of each grounding arm for abutting upward against the docking element; the signal frame portion has two opposite third side walls and two opposite fourth side walls connecting the two third side walls, the length of the third side wall is greater than the length of the fourth side wall, the length of the first side wall is greater than the length of the third side wall, the length of the second side wall is greater than or equal to the length of the fourth side wall, each signal terminal has two signal arms, one signal arm extends upward from each third side wall, and a signal contact portion is formed on the top of each signal arm for abutting upward against the docking element.
[0010] Furthermore, the two first side walls of each grounding frame portion are arranged opposite to each other front and back, and the two third side walls of each signal frame portion are arranged opposite to each other left and right. Each grounding terminal and each signal terminal respectively has at least one connecting portion, and the connecting portion of the grounding terminal extends upward or downward from the first side wall, and the connecting portion of the signal terminal extends upward or downward from the third side wall.
[0011] Furthermore, the grounding frame has two opposite first side walls and two opposite second side walls connecting the two first side walls. Each grounding terminal has three grounding arms, one grounding arm extends upward from one of the first side walls and two grounding arms extend upward from the other first side wall. A grounding contact portion is formed on the top of each grounding arm for abutting upward against the docking element. The first side wall connecting the two grounding arms is provided with a seam running through the upper and lower parts. Looking from top to bottom, the seam is located between the two grounding arms.
[0012] Furthermore, two front and rear signal terminals separated by a ground terminal are arranged opposite each other; looking from top to bottom, the signal arm extends from the left and right sides of the signal frame in the left and right direction, and at least part of the ground arm extends from the front and rear sides of the ground frame in the front and rear direction.
[0013] Furthermore, the grounding arms extending from the front and rear sides of the grounding frame are first bent and extended in opposite directions, and then bent and extended towards each other to form a grounding contact portion for abutting upward against the docking element; each signal arm includes a first section bent and extended outward from the signal frame and a second section bent and extended in the opposite direction from the first section, and the top of the second section forms a signal contact portion for abutting upward against the docking element. When viewed from the left and right directions, the signal contact portion overlaps with the corresponding grounding contact portion, and when viewed from the top to the bottom, the center line of the signal contact portion deviates from the center line of the first section.
[0014] Furthermore, the grounding arm of each grounding terminal includes two first grounding arms connected to opposite sides of the grounding frame, and two second grounding arms extending in the opposite direction from the grounding frame. When viewed from top to bottom, the two first grounding arms are located between the two second grounding arms. The docking element presses down the first grounding arm, so that after the first grounding arm moves downward, the plate edge of the first grounding arm contacts the plate surface of the corresponding second grounding arm.
[0015] Furthermore, the grounding arm of each grounding terminal includes a first grounding arm, two second grounding arms and a third grounding arm. The first grounding arm and the third grounding arm are connected to two opposite sides of the grounding frame, and the two second grounding arms are connected to the other opposite sides of the grounding frame. The docking element presses down the first grounding arm, so that the first grounding arm moves downward, and then the first grounding arm contacts the two second grounding arms downward, and the first grounding arm contacts the third grounding arm.
[0016] Furthermore, the signal arm of each signal terminal includes a first signal arm and a second signal arm connected to opposite sides of the signal frame portion. The docking element presses down the first signal arm so that the first signal arm moves downward and contacts the second signal arm. Looking from top to bottom, the signal frame portion gradually shrinks in the direction from the first signal arm to the second signal arm.
[0017] Furthermore, the signal arm of each signal terminal includes a first signal arm and a second signal arm connected to opposite sides of the signal frame portion, and the docking element presses down the first signal arm so that the first signal arm moves downward and contacts the second signal arm. The upper ends of the other two opposite sides of the signal frame portion each have a bevel, and the bevel gradually increases from the first signal arm to the second signal arm. Looking from top to bottom, the first signal arm is located between the two bevels.
[0018] Furthermore, the midpoint of the connection position between the grounding arm of each grounding terminal and the grounding frame equally divides the circumference of the upper end of the grounding frame.
[0019] Furthermore, the grounding frame is an equilateral triangle when viewed from top to bottom. Each grounding terminal has three grounding arms extending from the midpoint of each side of the triangle. The tops of the three grounding arms respectively form a grounding contact portion for abutting upward against the docking element.
[0020] Furthermore, the grounding arm of each grounding terminal first bends and extends from opposite sides of the grounding frame, then bends and extends toward each other, and then extends upward, and the top of the grounding arm forms a grounding contact portion for abutting the docking element upward.
[0021] Compared with the prior art, the electrical connector of the utility model has the following beneficial effects:
[0022] By providing a grounding arm extending from the upper end of the grounding frame, at least three transmission paths are formed between the grounding frame and the docking element, which is greater than the number of transmission paths formed between the signal frame of the signal terminal and the docking element, so that the grounding return path of the grounding terminal is increased; by providing a signal frame of the signal terminal and forming at least two transmission paths between the signal frame and the docking element, the capacitance of the signal terminal can be adjusted to achieve impedance matching, thereby improving the crosstalk between the signal terminals and improving the high-frequency performance of the electrical connector.
Brief Description of the Drawings
[0023] Figure 1 It is an exploded perspective view of the electrical connector of the first embodiment of the utility model;
[0024] Figure 2 for Figure 1 A top view of the CEC connector;
[0025] Figure 3 for Figure 1 A three-dimensional diagram of the ground terminal;
[0026] Figure 4 for Figure 1 A front view of the middle signal terminal in the insulating body;
[0027] Figure 5 It is an exploded perspective view of an electrical connector according to a second embodiment of the present utility model;
[0028] Figure 6 for Figure 5 A top view of the CEC connector;
[0029] Figure 7 for Figure 5 A three-dimensional diagram of the ground terminal;
[0030] Figure 8 for Figure 5 A three-dimensional view of the middle ground terminal when it is pressed down by the docking component;
[0031] Fig. 9 It is a top view of the electrical connector according to the third embodiment of the utility model;
[0032] Fig.10 for Fig. 9 Sectional view along line BB;
[0033] Fig.11 for Fig. 9 A three-dimensional diagram of the ground terminal;
[0034] Fig.12 for Fig. 9 A three-dimensional diagram of the middle signal terminal;
[0035] Fig.13It is a top view of an electrical connector according to a fourth embodiment of the present utility model;
[0036] Fig.14 for Fig.13 A three-dimensional diagram of the ground terminal;
[0037] Fig.15 for Fig.13 A three-dimensional image of the ground terminal from another perspective.
[0038] Description of the accompanying drawings for the specific implementation:
[0039] Electrical connector 100 Insulation body 1 Terminal slot 11 Ground terminal 2 Ground frame 21 First side wall 211 Second side wall 212 Ground arm 22 First ground arm 22a Second ground arm 22b The third ground arm 22c Ground contact portion 220 First seam 23 Ground protrusion 24 Signal terminal 3 Signal frame part 31 The third side wall 311 Fourth side wall 312 Signal Arm 32 First paragraph 321 Second paragraph 322 First signal arm 32a Second signal arm 32b Signal contact part 320 Second seam 33 Signal bump 34 Bevel 35 Docking element 200 Lower docking element 300 [Specific implementation method]
[0040] In order to facilitate a better understanding of the purpose, structure, features and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.
[0041] For ease of understanding, the left-right direction is defined as X, with the right direction being the positive direction of the X axis, the front-back direction is defined as Y, with the front direction being the positive direction of the Y axis, and the up-down direction is defined as Z, with the upward direction being the positive direction of the Z axis. The front-back direction X, the left-right direction Y, and the up-down direction Z are all perpendicular to each other.
[0042] like Figures 1 to 4 As shown, the first embodiment of the electrical connector 100 of the utility model. The electrical connector 100 of this embodiment includes an insulating body 1 and a plurality of grounding terminals 2 and a plurality of signal terminals 3 accommodated in the insulating body 1. Specifically, the insulating body 1 is provided with a plurality of rows of terminal slots 11 penetrating the insulating body 1 from top to bottom, each row of terminal slots 11 is arranged in the left-right direction, and the terminal slots 11 in the front and rear adjacent rows are staggered front to back, and each grounding terminal 2 and each signal terminal 3 are respectively accommodated in a corresponding terminal slot 11. In other embodiments, the terminal slots 11 in the front and rear adjacent rows can also be aligned front to back. The grounding terminal 2 and the signal terminal 3 are arranged side by side left and right, and the signal terminals 3 in the front and rear adjacent rows are staggered front to back, and the signal terminals 3 in the front and rear adjacent rows are opposite each other front to back.
[0043] like Figure 1 , Figure 2 and Figure 3As shown, the grounding terminal 2 includes a grounding frame 21 and three grounding arms 22 extending from the upper end of the grounding frame 21. The grounding frame 21 has two first side walls 211 opposite to each other in the front and back and two second side walls 212 opposite to each other in the left and right connecting the two first side walls 211, and the length of the first side wall 211 is greater than the length of the second side wall 212. One grounding arm 22 extends upward from the first side wall 211 on the front side and two grounding arms 22 extend upward from the first side wall 211 on the rear side. The first side wall 211 on the rear side is provided with a first seam 23 running through from top to bottom. When viewed from top to bottom, the first seam 23 is located between the two grounding arms 22. A grounding protrusion 24 extends from the upper end and the lower end of each second side wall 212, respectively, and the width of the grounding protrusion 24 in the left-right direction exceeds the plane width of the second side wall 212.
[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the grounding arms 22 extending from the two first side walls 211 of the grounding frame 21 are first bent and extended in opposite directions, then bent and extended toward each other and passed over each other, and then bent and extended upward to form a grounding contact portion 220. The grounding contact portions 220 of the three grounding arms 22 of the same grounding terminal 2 abut against a conductive sheet of the docking element 200, and three transmission paths are formed between the grounding frame 21 and the docking element 200 through the three grounding arms 22. In other embodiments, one grounding arm 22 may be extended upward from the first side wall 211 on the rear side, and two grounding arms 22 may be extended upward from the first side wall 211 on the front side, and the first joint 23 may be correspondingly arranged on the first side wall 211 on the front side and located between the two grounding arms 22; or the two first side walls 211 may be arranged to be opposite to each other in the left-right direction; or the number of the grounding arms 22 may be arranged to be more than three, such as two grounding arms 22 may be extended upward from each first side wall 211, or two grounding arms 22 may be extended upward from one of the first side walls 211 and three grounding arms 22 may be extended upward from the other first side wall 211; or the grounding contact portion 220 may be arranged to be arc-shaped.
[0045] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the grounding protrusion 24 extends vertically from the upper and lower ends of the second side wall 212 in the up-down direction. In other embodiments, the grounding protrusions 24 located on the two second side walls 212 can be bent and extended in the up-down direction and in the left-right direction toward or away from each other. In this embodiment, the grounding protrusion 24 does not exceed the upper and lower surfaces of the insulating body 1 in the up-down direction. In other embodiments, the grounding protrusion 24 can exceed the terminal slot 11 in the up-down direction and protrude from the upper and lower surfaces of the insulating body 1. In this embodiment, one of the grounding protrusions 24 is selected as the material connection part for connecting with the material strip. In other embodiments, multiple grounding protrusions 24 can be used as material connection parts for connecting with the material strip.
[0046] like Figure 1 , Figure 2 and Figure 4 As shown, the signal terminal 3 includes a signal frame 31 and two signal arms 32 extending from the upper end of the signal frame 31. The signal frame 31 has two third side walls 311 opposite to each other on the left and right sides and two fourth side walls 312 opposite to each other on the front and back sides connecting the two third side walls 311. The length of the third side wall 311 is greater than the length of the fourth side wall 312, the length of the first side wall 211 is greater than the length of the third side wall 311, and the length of the second side wall 212 is greater than the length of the fourth side wall 312 (in other embodiments, the length of the second side wall 212 may be equal to or less than the length of the fourth side wall 312). The area enclosed by the ground frame 21 is greater than the area enclosed by the signal frame 31 (of course, in other embodiments, the area enclosed by the ground frame 21 may also be equal to the area enclosed by the signal frame 31). A second seam is provided from one of the fourth side walls 312 running through from top to bottom. A signal convex portion 34 extends from the upper end and the lower end of each fourth side wall 312, respectively, and the width W1 of the signal convex portion 34 in the left-right direction exceeds the plane width W2 of the fourth side wall 312. One of the signal protrusions 34 is used as a material connection part for connecting with the material belt, and in other embodiments, multiple signal protrusions 34 can be used as material connection parts for connecting with the material belt. The second seam runs through the fourth side wall 312 and the signal protrusion 34 vertically. In this embodiment, the second seam extends vertically up and down, and in other embodiments, the second seam can extend obliquely up and down.
[0047] like Figure 1 , Figure 2 and Figure 3As shown, the two signal arms 32 first bend and extend from the corresponding third side wall 311 in opposite directions, then bend and extend toward each other and then bend and extend upward to form the signal contact portion 320. The signal frame portion 31 forms two transmission paths with the docking element 200 through the two signal arms 32. Specifically, each signal arm 32 includes a first section 321 that bends and extends outward from the third side wall 311 of the signal frame portion 31 and a second section 322 that bends and extends in the opposite direction from the first section 321. The signal contact portion 320 is formed at the top of the second section 322. When viewed from top to bottom, the center line of the signal contact portion 320 deviates from the center line of the first section 321. When viewed from the left and right directions, the signal contact portion 320 of the signal terminal 3 deflected forward overlaps with the ground contact portion 220 of the ground arm 22 extending from the first side wall 211 at the rear side of the ground terminal 2 in the same row, and the signal contact portion 320 of the signal terminal 3 deflected backward overlaps with the ground contact portion 220 of the ground arm 22 extending from the first side wall 211 at the front side of the ground terminal 2 in the same row. In other embodiments, the two fourth side walls 312 may also be arranged to be opposite to each other in the left and right directions; or the number of the signal arms 32 may be arranged to be more than two, such as when there are four ground arms 22, one of the third side walls 311 extends one signal arm 32 upward, and the other third side wall 311 extends two signal arms 32 upward; or the signal contact portion 320 is arranged to be arc-shaped.
[0048] like Figure 1 and Figure 2 As shown, in the present embodiment, the grounding frame portion 21 and the signal frame portion 31 are both rectangular in shape when viewed from top to bottom. In other embodiments, the grounding frame portion 21 and the signal frame portion 31 may be three-sided surrounding types such as C-shape, U-shape, or surrounding types such as circular, triangular, trapezoidal and other polygonal shapes, and the grounding frame portion 21 and the signal frame portion 31 may be different shapes.
[0049] like Figure 1 and Figure 2 As shown, two adjacent signal terminals 3 in the same row constitute a differential signal pair (in other embodiments, the signal terminal 3 may be a single-ended signal), and a ground terminal 2 is provided between adjacent differential signal pairs. The middle differential signal pair is surrounded by a plurality of ground terminals 2. Specifically, in this embodiment, a differential signal pair is surrounded by three ground terminals 2 in the adjacent front and rear rows and one terminal on the left and right sides, that is, eight ground terminals 2 are arranged around a differential signal pair. In other embodiments, when the terminal slots 11 of the front and rear adjacent rows are aligned, each differential signal pair is surrounded by two ground terminals 2 in the front and rear rows and one terminal on the left and right sides.
[0050] like Figures 5 to 8As shown, it is a second embodiment of the electrical connector 100 of the utility model. The arrangement of the signal terminal 3, the signal terminal 3 and the ground terminal 2 of the electrical connector 100 of this embodiment is the same as that of the first embodiment, so it is not repeated. The difference lies in the structure of the ground terminal 2, so only the structure of the ground terminal 2 in the second embodiment is described below.
[0051] like Figure 6 , Figure 7 and Figure 8 As shown, the grounding terminal 2 of this embodiment includes a grounding frame 21 and four grounding arms 22 extending from the upper end of the grounding frame 21. When viewed from top to bottom, the grounding frame 21 is circular, and the area enclosed by the grounding frame 21 is larger than the area enclosed by the signal frame 31. The four grounding arms 22 include two first grounding arms 22a and two second grounding arms 22b. When viewed from top to bottom, the two first grounding arms 22a are located between the two second grounding arms 22b. When the docking element 200 presses down the first grounding arms 22a, the plate edge of the first grounding arm 22a contacts the plate surface of the corresponding second grounding arm 22b, and the grounding frame 21 forms four transmission paths with the docking element 200 through the two first grounding arms 22a and the two second grounding arms 22b. The two first grounding arms 22a are respectively bent and extended from the front and rear sides of the grounding frame 21 in reverse directions, then bent and extended towards each other, and then bent and extended upward to form a grounding contact portion 220 for abutting the docking element 200 upward. Specifically, in this embodiment, the first grounding arm 22a extending from the front side of the grounding frame 21 is biased to the left, and the first grounding arm 22a extending from the rear side of the grounding frame 21 is biased to the right. One of the second grounding arms 22b extends backward and rightward from the left side of the grounding frame 21, and the first grounding arm 22a extending from the front side of the grounding frame 21 abuts against the second grounding arm 22b, and the other second grounding arm 22b extends forward and leftward from the right side of the grounding frame 21, and the first grounding arm 22a extending from the rear side of the grounding frame 21 abuts against the second grounding arm 22b. In this embodiment, the plate surface of the second grounding arm 22b is vertical, and in other embodiments, the plate surface of the second grounding arm 22b may extend obliquely in a direction that is angled with the vertical direction.
[0052] like Figures 9 to 12 As shown, the third embodiment of the electrical connector 100 of the utility model is used for electrically connecting the docking component 200 and the lower docking component 300 (in this embodiment, the docking component 200 is a chip module, and the lower docking component 300 is a circuit board) and includes an insulating body 1 and a plurality of grounding terminals 2 and a plurality of signal terminals 3 accommodated in the insulating body 1.
[0053] like Fig. 9 , Fig.10 and Fig.11As shown, the grounding terminal 2 includes a grounding frame 21 and four grounding arms 22 extending from the upper end of the grounding frame 21. The grounding frame 21 is a rectangular shape when viewed from top to bottom, and the midpoints of the connection positions between the four grounding arms 22 and the grounding frame 21 equally divide the upper end circumference of the grounding frame 21. The four grounding arms 22 include a first grounding arm 22a, two second grounding arms 22b and a third grounding arm 22c. The first grounding arm 22a is formed by extending forward from the rear side of the grounding frame 21, the third grounding arm 22c is formed by extending forward from the front side of the grounding frame 21, and the two second grounding arms 22b extend toward each other from the left and right opposite sides of the grounding frame 21. When the docking element 200 presses down the first grounding arm 22a, the first grounding arm 22a contacts the two second grounding arms 22b downward, and the first grounding arm 22a contacts the third grounding arm 22c front and back. The grounding frame 21 forms four transmission paths with the docking element 200 through the first grounding arm 22a, the two second grounding arms 22b and the one third grounding arm 22c.
[0054] like Fig. 9 , Fig.10 and Fig.12 As shown, the signal terminal 3 includes a signal frame 31 and two signal arms 32 extending from the upper end of the signal frame 31. The signal frame 31 is an isosceles trapezoidal shape when viewed from top to bottom. The front and rear sides of the signal frame 31 are parallel to each other, and the length of the front side of the signal frame 31 in the left-right direction is shorter than the length of the rear side of the signal frame 31. The upper ends of the other two opposite sides of the signal frame 31 each have a hypotenuse 35, and the hypotenuse 35 gradually increases from the rear side to the front side of the signal frame 31. The two signal arms 32 include a first signal arm 32a and a second signal arm 32b connected to the front and rear opposite sides of the signal frame 31. The first signal arm 32a extends forward from the rear side of the signal frame 31, and the second signal arm 32b extends forward from the front side of the signal frame 31. The docking component 200 presses down the first signal arm 32a, so that the first signal arm 32a moves downward and contacts the second signal arm 32b. The signal frame 31 forms two transmission paths through the first signal arm 32a and between the first signal arm 32a and the docking element 200. From top to bottom, the first signal arm 32a is located between the two oblique edges 35, and the signal frame 31 gradually shrinks from the first signal arm 32a to the second signal arm 32b. The area of the grounding frame 21 is larger than that of the signal frame 31, and the grounding frame 21 extends backward beyond the signal frame 31.
[0055] Of course, the signal terminal 3 of this embodiment can be used in conjunction with the ground terminal 2 of the first or second embodiment, and the ground terminal 2 of this embodiment can also be used in conjunction with the signal terminal 3 of the first embodiment.
[0056] like Figures 13 to 15FIG. 1 is a fourth embodiment of the electrical connector 100 of the present utility model. The arrangement of the signal terminals 3, signal terminals 3 and ground terminals 2 of the electrical connector 100 of this embodiment is the same as that of the first embodiment, so it is not repeated here. The difference lies in the structure of the ground terminal 2. Only the structure of the ground terminal 2 in the fourth embodiment is described below.
[0057] like Fig.13 , Fig.14 and Fig.15 As shown, the grounding terminal 2 includes a grounding frame 21 and three grounding arms 22 extending from the upper end of the grounding frame 21. The grounding frame 21 forms three transmission paths with the docking element 200 through the three grounding arms 22. The grounding frame 21 is an equilateral triangle when viewed from top to bottom. The three grounding arms 22 are formed by first extending outwards and bending from the midpoints of the three sides of the triangle and then bending and extending in the opposite direction. A grounding contact portion 220 is formed at the top of each grounding arm 22 for abutting the docking element 200 upward. The transmission paths from the three grounding contact portions 220 of each grounding terminal 2 to the grounding frame 21 are substantially equal. In other embodiments, the grounding frame can be set to be circular when viewed from top to bottom, and the midpoint of the connection position between the grounding arm of each grounding terminal and the grounding frame equally divides the circumference of the circle.
[0058] In the first to fourth embodiments, the ground terminal 2 is symmetrically arranged about the horizontal center plane of the ground frame 21, and the signal terminal 3 is symmetrically arranged about the horizontal center plane of the signal frame 31. In other embodiments, the ground terminal 2 and the signal terminal 3 may also be asymmetrical, respectively, such as the ground terminal 2 may include any number of grounding spring arms, or SMT solder feet, or DIP solder feet, or solder-free fisheye pins extending from the lower end of the ground frame 21. The signal terminal 3 may include any number of signal flares, or SMT solder feet, or DIP solder feet, or solder-free fisheye pins extending from the lower end of the signal frame 31, which are less than the number of grounding spring arms.
[0059] In summary, the utility model has the following beneficial effects:
[0060] (1) By setting the number of ground arms 22 of each ground terminal 2 to be greater than the number of signal arms 32 of each signal terminal 3, the number of transmission paths formed between the ground frame 21 and the docking component 200 is greater than the number of transmission paths formed between the signal frame 31 of each signal terminal 3 and the docking component 200. In this way, the number of ground return paths of the ground terminal 2 increases, thereby improving the crosstalk between the signal terminals 3 and improving the high-frequency performance of the electrical connector 100.
[0061] (2) By setting the area enclosed by the ground frame 21 to be larger than the area enclosed by the signal frame 31, the distance between the ground terminal 2 and the signal terminal 3 can be reduced, and the shielding range of the ground terminal 2 can be increased, thereby improving the crosstalk between the signal terminals 3.
[0062] (3) The signal terminals 3 in the two rows are opposite to each other. When viewed from top to bottom, the signal arms 32 extend from the left and right sides of the signal frame 31 in the left-right direction, and at least part of the grounding arms 22 extend from the front and back sides of the grounding frame 21 in the front-to-back direction, so that the ground return path is shortened, thereby improving the high-frequency performance of the electrical connector 100.
[0063] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.
Claims
1. An electrical connector, characterized in that: include: an insulating body; A plurality of grounding terminals and a plurality of signal terminals arranged side by side on the left and right are respectively accommodated in the insulating body, each grounding terminal includes a grounding frame portion, a grounding arm extends from the upper end of the grounding frame portion so that at least three transmission paths are formed between the grounding frame portion and the docking element; the signal terminal includes a signal frame portion, a signal arm extends from the upper end of the signal frame portion so that at least two transmission paths are formed between the signal frame portion and the docking element; wherein the number of transmission paths formed between the grounding frame portion and the docking element of each grounding terminal is greater than the number of transmission paths formed between the signal frame portion and the docking element of each signal terminal.
2. The electrical connector as described in claim 1, when viewed from top to bottom, the area enclosed by the grounding frame is larger than the area enclosed by the signal frame, two adjacent signal terminals on the left and right constitute a differential signal pair, and at least one differential signal pair is surrounded by multiple grounding terminals on all four sides.
3. The electrical connector according to claim 2, wherein: The ground frame portion extends beyond the signal frame portion in the front-rear direction.
4. The electrical connector according to claim 1, wherein: The grounding frame portion has two opposite first side walls and two opposite second side walls connecting the two first side walls, the length of the first side wall is greater than the length of the second side wall, each grounding terminal has three grounding arms, one grounding arm extends upward from one of the first side walls and two grounding arms extend upward from the other first side wall, and a grounding contact portion is formed on the top of each grounding arm for abutting upward against the docking element; the signal frame portion has two opposite third side walls and two opposite fourth side walls connecting the two third side walls, the length of the third side wall is greater than the length of the fourth side wall, the length of the first side wall is greater than the length of the third side wall, the length of the second side wall is greater than or equal to the length of the fourth side wall, each signal terminal has two signal arms, one signal arm extends upward from each third side wall, and a signal contact portion is formed on the top of each signal arm for abutting upward against the docking element.
5. The electrical connector according to claim 4, wherein: The two first side walls of each grounding frame portion are arranged opposite to each other front and back, and the two third side walls of each signal frame portion are arranged opposite to each other left and right. Each grounding terminal and each signal terminal respectively have at least one connecting portion, and the connecting portion of the grounding terminal extends upward or downward from the first side wall, and the connecting portion of the signal terminal extends upward or downward from the third side wall.
6. The electrical connector according to claim 1, wherein: The grounding frame has two opposite first side walls and two opposite second side walls connecting the two first side walls. Each grounding terminal has three grounding arms, one grounding arm extends upward from one of the first side walls and two grounding arms extend upward from the other first side wall. A grounding contact portion is formed on the top of each grounding arm for abutting against a docking element upward. The first side wall connecting the two grounding arms is provided with a seam running through the upper and lower parts. When viewed from top to bottom, the seam is located between the two grounding arms.
7. The electrical connector according to claim 1, wherein: The front and rear signal terminals are arranged opposite to each other with a ground terminal in between; looking from top to bottom, the signal arm extends from the left and right sides of the signal frame in the left and right direction, and at least part of the ground arm extends from the front and rear sides of the ground frame in the front and rear direction.
8. The electrical connector according to claim 7, wherein: The grounding arms extending from the front and rear sides of the grounding frame first bend and extend in opposite directions, then bend and extend towards each other to form a grounding contact portion for abutting upward against a docking element; each signal arm includes a first section that bends and extends outward from the signal frame and a second section that bends and extends in the opposite direction from the first section, and a signal contact portion is formed on the top of the second section for abutting upward against a docking element. When viewed from the left and right directions, the signal contact portion overlaps with the corresponding grounding contact portion, and when viewed from the top to the bottom, the center line of the signal contact portion deviates from the center line of the first section.
9. The electrical connector according to claim 1, wherein: The grounding arm of each grounding terminal includes two first grounding arms connected to opposite sides of the grounding frame, and two second grounding arms extending in the opposite direction from the grounding frame. When viewed from top to bottom, the two first grounding arms are located between the two second grounding arms. After the docking element presses down the first grounding arm so that the first grounding arm moves downward, the plate edge of the first grounding arm contacts the plate surface of the corresponding second grounding arm.
10. The electrical connector according to claim 1, wherein: The grounding arm of each grounding terminal includes a first grounding arm, two second grounding arms and a third grounding arm. The first grounding arm and the third grounding arm are connected to two opposite sides of the grounding frame, and the two second grounding arms are connected to the other opposite sides of the grounding frame. The docking element presses down the first grounding arm, so that the first grounding arm moves downward, and then the first grounding arm contacts the two second grounding arms downward, and the first grounding arm contacts the third grounding arm.
11. The electrical connector according to claim 1, wherein: The signal arm of each signal terminal includes a first signal arm and a second signal arm connected to opposite sides of the signal frame. The docking element presses down the first signal arm, causing the first signal arm to move downward and contact the second signal arm. Looking from top to bottom, the signal frame gradually shrinks from the first signal arm to the second signal arm.
12. The electrical connector according to claim 1, wherein: The signal arm of each signal terminal includes a first signal arm and a second signal arm connected to opposite sides of the signal frame portion. The docking component presses down the first signal arm so that the first signal arm moves downward and contacts the second signal arm. The upper ends of the other two opposite sides of the signal frame portion each have a bevel, and the bevel gradually increases from the first signal arm to the second signal arm. Looking from top to bottom, the first signal arm is located between the two bevels.
13. The electrical connector according to claim 1, wherein: The midpoint of the connection position between the ground arm of each ground terminal and the ground frame equally divides the circumference of the upper end of the ground frame.
14. The electrical connector according to claim 13, wherein: The grounding frame is an equilateral triangle when viewed from top to bottom. Each grounding terminal has three grounding arms extending from the midpoint of each side of the triangle. The tops of the three grounding arms each form a grounding contact portion for abutting upward against the docking element.
15. The electrical connector according to claim 1, wherein: The grounding arms of each grounding terminal are first bent and extended from opposite sides of the grounding frame, then bent and extended towards each other, and then extended upward. The top of the grounding arm forms a grounding contact portion for abutting against the docking element upward.