High-speed backplane connector and high-speed connection system

Abstract

The present invention discloses a high-speed backplane connector and a high-speed connection system, wherein the high-speed backplane connector comprises an insulating base and a plurality of terminal modules installed in the insulating base and arranged in parallel. Each terminal module comprises a row of signal terminals fixed in the insulating bracket, wherein the butt joint sections of at least two adjacent signal terminals have different lengths, and the horizontal contact fingers of the two adjacent signal terminals are arranged in a front-to-back staggered manner. Through this staggered design, the inductance and capacitance of the signal terminal can be adjusted, thereby achieving better signal transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a high-speed backplane connector and a high-speed connection system, which are suitable for high-density, high-speed transmission environments and have good high-speed signal transmission performance. Background Art

[0002] Backplane connectors are connectors that connect motherboards and daughterboards. They are commonly used in large-scale communication equipment, ultra-high-performance servers and supercomputers, industrial computers, and high-end storage devices. With the development of communication technology, signal transmission speeds are getting higher and higher, so it is necessary to solve the interference and crosstalk caused by distributed capacitance and inductance due to high-frequency signal high-speed transmission, as well as attenuation and reflection caused by impedance mismatch.

[0003] In particular, in new digital systems, the data conversion and transmission rates even need to reach 25Gbps to 56Gbps. When running at high speeds, electrical noise will occur in the circuit, affecting signal crosstalk, and electromagnetic interference noise that may interfere with other circuits. This means that signal integrity and reliability become very important functions. Therefore, PCB designers must consider the backplane as part of the entire transmission line, including factors such as impedance, propagation delay, time lag and crosstalk.

[0004] Since the backplane is the core switching connection part of the interconnected system bus, the signal rate transmitted on the backplane is usually the highest in the system, which also places higher requirements on the SI performance of the backplane connector.

[0005] Therefore, it is necessary to provide a new high-speed backplane connector and a high-speed connection system to meet the signal integrity requirements during high-speed signal transmission. Summary of the invention

[0006] The main purpose of the present invention is to provide a high-speed backplane connector, whose signal terminals adopt a staggered design to adjust inductance and capacitance, thereby achieving better signal transmission.

[0007] Another object of the present invention is to provide a high-speed connection system, wherein the signal terminals of the male and female connectors are staggered to adjust the inductance and capacitance, thereby achieving better signal transmission.

[0008] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0009] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-speed backplane connector, comprising an insulating base, and a plurality of terminal modules installed in the insulating base and arranged in parallel; each terminal module comprises an insulating bracket, and a row of signal terminals fixed in the insulating bracket; each signal terminal comprises a docking section, a mounting section, and an intermediate section located between the docking section and the mounting section; wherein the docking section extends from the front edge of the insulating bracket, the mounting section extends from the rear edge of the insulating bracket, and the intermediate section is retained in the insulating bracket; the docking section has two opposite vertical wide faces and two opposite horizontal narrow faces, the docking section comprises a head, a root, and a horizontal contact finger, wherein the horizontal contact finger is formed in the head and extends from one of the horizontal narrow faces toward one of the vertical wide faces by bending; wherein the horizontal contact finger and one of the vertical wide faces constitute the electrical contact portion of the signal terminal; wherein the docking sections of at least two adjacent signal terminals in the terminal module have different lengths, and the horizontal contact fingers of the two adjacent signal terminals are arranged in a front-to-back staggered manner.

[0010] In one embodiment, the horizontal contact finger is perpendicular to the vertical wide surface of the docking section.

[0011] In one embodiment, the head portion is further formed with an inclined guide surface, and the guide surface is located in front of the horizontal contact finger.

[0012] In one embodiment, among the two adjacent signal terminals, the horizontal contact finger of one of the signal terminals is formed by bending from the horizontal narrow surface on the upper side of the head, and the horizontal contact finger of the other signal terminal is formed by bending from the horizontal narrow surface on the lower side of the head, and the horizontal contact fingers of the two adjacent signal terminals are bent and extended in the same direction.

[0013] In one embodiment, among the two adjacent signal terminals, the horizontal contact finger of one of the signal terminals is formed by bending from the horizontal narrow surface on the lower side of the head, and the horizontal contact finger of the other signal terminal is formed by bending from the horizontal narrow surface on the upper side of the head, and the horizontal contact fingers of the two adjacent signal terminals are bent and extended in the same direction.

[0014] In one embodiment, the terminal module also includes a column of ground terminals, which are spaced between the column of signal terminals; wherein the signal terminals (S) and the ground terminals (G) in the same column are arranged in the manner of SGSSGSSG and / or GSSGSSGS, and the signal terminals (S) and the ground terminals (G) in two adjacent columns are arranged alternately in these two manners.

[0015] In one embodiment, each grounding terminal includes a mating end and a fixed end, and the mating end and the fixed end of each row of grounding terminals are connected through the grounding plate; wherein the mating end has a horizontal contact finger, and the horizontal contact finger is formed by bending from one of the horizontal narrow surfaces of the mating end.

[0016] In one embodiment, in the terminal module, the mating end of the ground terminal is the same length as the longer mating section of the adjacent signal terminal in the same column; the length of the horizontal contact finger of the ground terminal along the front-to-back direction is greater than the length of the horizontal contact finger of the signal terminal.

[0017] To achieve the above-mentioned purpose, the present invention also adopts the following technical solution: A high-speed connection system, comprising: a male connector and a female connector. The male connector comprises a plurality of terminal modules arranged in parallel, each terminal module comprises a row of male signal terminals; each male signal terminal comprises a docking section, a mounting section, and an intermediate section between the docking section and the mounting section; the female connector comprises a plurality of terminal modules arranged in parallel, each terminal module comprises a row of female signal terminals; each female signal terminal comprises a docking section, a mounting section, and an intermediate section between the docking section and the mounting section. The docking sections of the male signal terminal and the female signal terminal each have two opposite vertical wide faces and two opposite horizontal narrow faces, and the docking sections of the male signal terminal and the female signal terminal each comprise a head, a root, and a horizontal contact finger, wherein the horizontal contact finger is formed on the head and is bent and extended from one of the horizontal narrow faces toward one of the vertical wide faces. The butt joint sections of at least two adjacent signal terminals in each terminal module of the male connector and the female connector have different lengths, and the horizontal contact fingers of the two adjacent signal terminals are arranged in a front-to-back staggered manner; and the butt joint section of the male signal terminal and the corresponding butt joint section of the female signal terminal form a complementary structure when mating. When the male signal terminal and the female signal terminal are mating, the horizontal contact finger of the male signal terminal forms an electrical contact with one of the vertical wide faces of the female signal terminal, and the horizontal contact finger of the female signal terminal forms an electrical contact with one of the vertical wide faces of the male signal terminal.

[0018] In one embodiment, during docking and mating, the male signal terminal with a shorter docking section in the male connector forms an electrical connection with the female signal terminal with a longer docking section in the female connector; and the male signal terminal with a longer docking section in the male connector forms an electrical connection with the female signal terminal with a shorter docking section in the female connector.

[0019] Compared with the prior art, the high-speed backplane connector and high-speed connection system of the present invention improve the docking structure of the signal terminals, so that the length of adjacent signal terminals is changed and the horizontal contact fingers are staggered to adjust the inductance and capacitance, and can change the ratio of capacitive reactance to inductive reactance within the same impedance, thereby achieving better signal transmission. In addition, the high-speed connection system of the present invention forms double contact when the male and female terminals are docked, and the contact position changes, thereby minimizing the residual roots to further improve the signal transmission quality, so that the present invention can be applied to high-density and high-speed (25Gbps~56Gbps) transmission environments, meeting the requirements of high-density and high-speed signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-speed backplane connector of the present invention.

[0021] Figure 2 for Figure 1 The figure shows a schematic diagram of the disassembled structure of the high-speed backplane connector of the present invention.

[0022] Figure 3 for Figure 1 The three-dimensional structure schematic diagram of the high-speed backplane connector of the present invention along another direction is shown.

[0023] Figure 4 for Figure 3 The figure shows a schematic diagram of the disassembled structure of the high-speed backplane connector of the present invention.

[0024] Figure 5 The terminal module structure diagram of the high-speed backplane connector of the present invention mainly shows the Figure 2 The terminal module structure is shown at the far side.

[0025] Figure 6 for Figure 5 The terminal module is shown disassembled, with the structure of the ground terminal shown separately.

[0026] Figure 7 for Figure 6 A schematic diagram of the structural disassembly of the terminal module in another direction is shown.

[0027] Figure 8 for Figure 5 The disassembly diagram of the terminal module shown mainly shows the structure of the ground terminal and the signal terminal after disassembly.

[0028] Fig. 9 This is a diagram showing the positional relationship between the terminal module of the male connector and the terminal module of the female connector before docking.

[0029] Fig.10 for Fig. 9The diagram shows the male and female terminals after they are mated and mated.

[0030] Fig.11 It is a schematic structural diagram of the male connector and the female connector of the high-speed connection system of the present invention before they are connected.

[0031] Fig.12 It is a schematic diagram of the structure of the male connector and the female connector of the high-speed connection system of the present invention after docking.

[0032] Fig.13 It is a schematic diagram of the structure of the female connector of the high-speed connection system of the present invention.

[0033] Fig.14 It is a schematic structural diagram of the female connector of the high-speed connection system of the present invention in another direction.

[0034] Fig.15 It is an insertion loss curve diagram of the high-speed connection system of the present invention at different signal frequencies.

[0035] Fig.16 It is a return loss curve diagram of the high-speed connection system of the present invention at different signal frequencies.

[0036] The reference numerals in the above drawings are described as follows:

[0037] High-speed backplane connector 1 Insulation base 10

[0038] Docking side 101 Installation side 102

[0039] Vertical wall 103 Terminal slot 104

[0040] Terminal module 20, 20a, 20b Insulation bracket 21

[0041] Signal terminal 30 (30a, 30b) docking section 31

[0042] Vertical wide surface 310 (310a, 310b)

[0043] Horizontal narrow surface 311 (311a, 311b), 420 (420a, 420b)

[0044] Head 312 Root 313

[0045] Horizontal contact fingers 314, 44 Guide surface 315

[0046] Installation section 32 Middle section 33

[0047] Ground terminal 40 Ground plate 41

[0048] Mating end 42 Fixed end 43

[0049] High Speed ​​Connectivity System 100 Female Connectors 8

[0050] Insulation base 801 Terminal module 802

[0051] Female signal terminal 80 Docking section 81

[0052] Vertical wide surface 810 Horizontal narrow surface 811 (811a, 811b)

[0053] Head 812 Root 813

[0054] Horizontal contact finger 814 is mounted on segment 82 . DETAILED DESCRIPTION

[0055] The following embodiments are described with reference to the attached drawings to illustrate specific embodiments of the present invention. Directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but are not used to limit the present invention.

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the high-speed backplane connector 1 of the present invention includes an insulating base 10 and a plurality of terminal modules 20 installed in the insulating base 10 and arranged in parallel from left to right.

[0057] like Figure 2 , Figure 4 As shown, the insulating base 10 has a docking side 101, a mounting side 102, and a plurality of vertical walls 103 extending from the mounting side 102 to the docking side 101, and a row of terminal grooves 104 are formed on both sides of at least one of the vertical walls 103 to fix the corresponding terminal module 20.

[0058] like Figures 5 to 8 As shown, each terminal module 20 at least includes an insulating support 21 and a row of signal terminals 30 fixed in the insulating support 21. In this embodiment, each terminal module 20 also includes a row of grounding terminals 40.

[0059] like Figure 6 , Figure 7As shown, the row of grounding terminals 40 are connected together by a grounding plate 41 to form a one-piece structure. The grounding plate 41 is fixed to one side of the insulating bracket 21 to provide electromagnetic shielding and grounding performance for two adjacent terminal modules 20. The row of grounding terminals 40 are arranged between the row of signal terminals 30 at intervals, so that the grounding terminals 40 and the signal terminals 30 located in the terminal module 20 are arranged in a row together.

[0060] In this embodiment, the so-called interval arrangement means that in the same row, the signal terminals 30 (S) and the ground terminals 40 (G) are arranged in the manner of SGSSGSSG, such as Figure 5 At the same time, this arrangement can also be seen in Figure 2 The terminal module 20a is shown at the side.

[0061] In this embodiment, the so-called interval arrangement also means that in the same row, the signal terminal 30 (S) and the ground terminal 40 (G) are arranged in the manner of GSSGSSGS; this arrangement can be seen in Figure 2 A second terminal module 20b is shown.

[0062] In more detail, in this embodiment, the terminal rows of two adjacent terminal modules 20a and 20b are arranged alternately in the above two arrangements. For example, the terminal arrangement of one terminal module 20a is SGSSGSSG, while the terminal arrangement of the other terminal module 20b is GSSGSSGS. The alternating arrangement of the two can further meet the high-frequency signal transmission requirements.

[0063] Of course, the present invention is not limited to the above two arrangements. In other embodiments, the row of signal terminals 30 and the row of ground terminals 40 can also be arranged in other spacing ways, which can also achieve better signal transmission performance.

[0064] During installation, if Figure 2 As shown, the terminal module 20 can be pushed forward from the mounting side 102 of the insulating base 10, so that the signal terminal 30 and the ground terminal 40 both extend along the corresponding terminal groove 104 toward the docking side 101 of the insulating base 10, and the insulating bracket 21 is fixed in the insulating base 10 to ensure a stable structure.

[0065] Since the focus of the present invention is on the structural design of the signal terminal 30 and the ground terminal 40 , the following description will focus on the two.

[0066] like Figure 8As shown, each signal terminal 30 includes a docking section 31, a mounting section 32, and a middle section 33 located between the docking section 31 and the mounting section 32. In this embodiment, the docking section 31 and the mounting section 32 are located at opposite ends (front end and rear end) of the middle section 33, respectively.

[0067] like Figure 6 , Figure 7 As shown, the signal terminal 30 is integrated with the insulating bracket 21 by injection molding, wherein the insulating bracket 21 is a vertical plate-like structure, the docking section 31 extends from the front edge of the insulating bracket 21 to prepare for docking with the docking connector; the mounting section 32 extends from the rear edge of the insulating bracket 21, and has a fisheye structure to prepare for insertion into the corresponding through hole of the circuit board (not shown); the middle section 33 is retained in the insulating bracket 21.

[0068] like Figure 8 As shown, the main structure of the signal terminal 30 can be a straight line, a Z-shape, or a right-angle L-shape. In this embodiment, the signal terminal 30 is roughly Z-shaped, and specifically, the middle section 33 is bent twice, so that the docking section 31 and the mounting section 32 are arranged in parallel or on the same straight line. Of course, the middle section 33 can also be unbent, so that the entire signal terminal 30 is straight.

[0069] like Figure 8 As shown, each grounding terminal 40 includes a mating end 42 and a fixed end 43. The mating end 42 and the fixed end 43 of each row of grounding terminals 40 are connected through the grounding plate 41, and the mating end 42 and the fixed end 43 are located on the same straight line. In this embodiment, the mating end 42 and the fixed end 43 are respectively located at two opposite edges of the grounding plate 41. The grounding terminal 40 is installed on one side of the insulating bracket 21 through the grounding plate 41, or is integrated with the insulating bracket 21 by injection molding.

[0070] like Figure 5 As shown, the mating end 42 extends from the front edge of the insulating bracket 21, the fixing end 43 extends from the rear edge of the insulating bracket 21, and the grounding plate 41 is retained on the insulating bracket 21. Similarly, the fixing end 43 of the grounding terminal 40 also has a fisheye structure to be firmly inserted into the corresponding circuit board through hole.

[0071] In this embodiment, the width (width in the vertical direction) of the mating end 42 of each ground terminal 40 is substantially greater than the width of the docking section 31 of each signal terminal 30. Of course, in other embodiments, the width of the ground terminal 40 can also be adjusted according to electrical requirements.

[0072] The docking section 31 of the signal terminal 30 and the mating end 42 of the ground terminal 40 of the present invention will be further described below.

[0073] Reference Figure 8 As shown, the docking section 31 of the signal terminal 30 of the present invention is generally linear, and its cross-section is rectangular, with two opposite vertical wide surfaces 310 (310a, 310b) and two opposite horizontal narrow surfaces 311 (311a, 311b), wherein the vertical wide surface 310a is the electrical contact surface of the signal terminal 30.

[0074] The docking section 31 includes a head 312 and a root 313, wherein the head 312 is located in front of the docking section 31 and is the free end of the docking section 31, and the root 313 is located in the rear of the docking section 31 and is the fixed end of the docking section 31, and the root 313 is close to the middle section 33 or the insulating bracket 21. The docking section 31 also has a horizontal contact finger 314, which is bent and extended from one of the horizontal narrow surfaces 311a (or 311b) of the docking section 31 toward the electrical contact surface 310a, and the horizontal contact finger 314 (especially the free end thereof) is the electrical contact portion of the signal terminal 30.

[0075] More specifically, the horizontal contact finger 314 is bent and extended from the horizontal narrow surface 311a on the upper side (or the horizontal narrow surface 311b on the lower side) of the head 312 toward the electrical contact surface 310a. In other words, the horizontal contact finger 314 is not bent and extended toward the other vertical wide surface 310b. In this embodiment, the horizontal contact finger 314 is perpendicular to the electrical contact surface 310a of the docking section 31. Since the horizontal contact finger 314 extends vertically, it forms a special L-shape together with the docking section 31. In addition, in this embodiment, the head 312 is also formed with an inclined guide surface 315, which is located in front of the horizontal contact finger 314 and is used to guide the signal terminal 30 to match the docking terminal during docking.

[0076] In the present invention, the horizontal contact finger 314 of the docking section 31 is the electrical contact portion of the signal terminal 30, and one of the vertical wide faces 310a of the docking section 31 is the electrical contact surface of the signal terminal 30, and the two together constitute the electrical contact portion between the signal terminal 30 and the docking terminal. For example, when the signal terminal 30 is docked with a docking terminal (such as a male terminal), the horizontal contact finger 314 of the docking section 31 and one of the vertical wide faces 310a of the docking section 31 can respectively form electrical contact with the corresponding parts of the docking terminal, thereby realizing a double contact design, which can not only ensure stable electrical contact, but also reduce residual roots (to be described in detail later).

[0077] It should be noted that the horizontal contact finger 314 is perpendicular to the vertical wide surface 310 of the docking section 31, where the so-called perpendicularity is not absolutely perpendicular, but can be close to perpendicularity. In addition, the horizontal contact finger 314 is not limited to being bent once, but can be formed by multiple bends. The horizontal contact finger 314 is also not limited to being absolutely horizontal.

[0078] The butting sections 31 of the signal terminals 30 in the same row of the present invention have different lengths. However, the horizontal contact fingers 314 of the signal terminals 30 in the same row are all bent and extended in the same direction.

[0079] In this embodiment, the butt joint sections 31 of the signal terminals 30 in the same row have two different lengths, especially the butt joint sections 31 of two adjacent signal terminals 30 (30a, 30b) have different lengths, and the horizontal contact fingers 314 of the two adjacent signal terminals 30 are arranged in a front-to-back staggered manner. Figure 8 As shown, among two adjacent signal terminals 30 (30a, 30b), the butt joint section 31 of one signal terminal 30a is longer, and its horizontal contact finger 314 is located at the front; while the butt joint section 31 of the other signal terminal 30b is shorter, and its horizontal contact finger 314 is located at the back accordingly. By changing the length of the butt joint section 31 and staggering the horizontal contact finger 314, the inductance and capacitance of the adjacent signal terminals 30 can be adjusted, so that the ratio of the capacitive reactance to the inductive reactance of the signal terminal 30 can be changed within the same impedance, and a more suitable and better SI performance can be obtained.

[0080] In this embodiment, the horizontal contact fingers 314 of the two adjacent signal terminals 30a and 30b are formed by bending from the horizontal narrow surfaces 311a and 311b on different sides of the corresponding docking section 31 toward the same direction (i.e., toward the side where the electrical contact surface 310a is located). In other words, the horizontal contact fingers 314 are formed by vertically bending from the horizontal narrow surface 311a or 311b on the upper side or the lower side of the docking section 31 (especially the head 312). For example, in this embodiment, among the two adjacent signal terminals 30a and 30b, the horizontal contact fingers 314 of one of the signal terminals 30a are formed by bending from the horizontal narrow surface 311a on the upper side of the head 312, and the horizontal contact fingers 314 of the other signal terminal 30b are formed by bending from the horizontal narrow surface 311b on the lower side of the head 312, so that the two horizontal contact fingers 314 are farthest apart in the vertical direction. Of course, in other embodiments, the horizontal contact finger 314 of one signal terminal 30 may be bent from the horizontal narrow surface 311b on the lower side of the head 312, and the horizontal contact finger 314 of the other signal terminal 30 may be bent from the horizontal narrow surface 311a on the upper side of the head 312, so that the two horizontal contact fingers 314 are closest to each other in the vertical direction.

[0081] Please refer to Figure 8 As shown, the mating end 42 of the grounding terminal 40 of the present invention is also straight and has a rectangular cross-section. The mating end 42 has a horizontal contact finger 44, which is bent from one of the horizontal narrow surfaces 420 (the upper horizontal narrow surface 420a or the lower horizontal narrow surface 420b) of the mating end 42.

[0082] like Figure 8 As shown, the lengths of the grounding terminals 40 in the same column of the present invention are consistent. In the same column, the mating end 42 of the grounding terminal 40 is substantially the same length as the longer docking section 31 of the adjacent signal terminal 30. In the same column, the lengths of the horizontal contact fingers 314 of the two adjacent signal terminals 30a, 30b along the front-to-back direction are the same. In the same column, the length of the horizontal contact fingers 44 of the grounding terminal 40 along the front-to-back direction is greater than the length of the horizontal contact fingers 314 of the signal terminals 30a, 30b. The same column refers to the same terminal module 20.

[0083] like Fig.11 , Fig.12 As shown, the high-speed connection system 100 of the present invention includes a male connector 1 and a female connector 8, which are mated with each other and respectively connected to two backplanes, thereby realizing high-speed signal transmission. The male connector 1 and the female connector 8 are similar in structure to the high-speed backplane connector 1 of the present invention described above. It can also be said that the high-speed backplane connector 1 mentioned above is a male connector, and its signal terminal 30 is a male signal terminal. The female connector 8 is roughly similar in structure to the high-speed backplane connector 1 mentioned above, and the only difference is that the structures of the two are mating or complementary. Only the detailed structures are different, please refer to Fig.13 and Fig.14 The schematic diagram of the structure of the insulating base 801 and the terminal module 802 of the female connector 8 is shown.

[0084] Since the present invention focuses on the structures of the signal terminals 30 and the ground terminals 40 , only the structure of the female signal terminals 80 of the female connector 8 will be described in detail herein.

[0085] like Fig. 9As shown, the female signal terminal 80 also includes a mating section 81, a mounting section 82, and an intermediate section (not shown) located between the mating section 81 and the mounting section 82. The mating section 81 is also substantially linear, including a head 812, a root 813, and a horizontal contact finger 814 formed at the head 812, and the horizontal contact finger 814 is bent and extended from one of the horizontal narrow surfaces 811 (811a or 811b) of the mating section 81 (especially the head 812 position) toward one of the vertical wide surfaces 810 (i.e., the electrical contact surface 810), and the horizontal contact finger 814 is perpendicular to the electrical contact surface 810.

[0086] The mating section 81 of the female signal terminal 80 and the corresponding mating section 31 of the male signal terminal 30 form a complementary structure when mated with each other.

[0087] In detail, if the docking section 81 of the female signal terminal 80 is longer, the docking section 31 of the corresponding male signal terminal 30 is shorter; conversely, if the docking section 81 of the female signal terminal 80 is shorter, the docking section 31 of the corresponding male signal terminal 30 is longer. In addition, if the horizontal contact finger 814 of the female signal terminal 80 is bent and extended from the horizontal narrow surface 811a on the upper side of the female signal terminal 80, the docking section 31 of the corresponding male signal terminal 30 is bent and extended from the horizontal narrow surface 311b on the lower side of the male signal terminal 30. Similarly, if the horizontal contact finger 814 of the female signal terminal 80 is bent and extended from the horizontal narrow surface 811b on the lower side of the female signal terminal 80, the docking section 31 of the corresponding male signal terminal 30 is bent and extended from the horizontal narrow surface 311a on the upper side of the male signal terminal 30. The female signal terminal 80 and the male signal terminal 30 are arranged as a complementary structure, thereby ensuring the connection safety between the two.

[0088] When the female signal terminal 80 and the male signal terminal 30 are mated with each other, the horizontal contact finger 314 of the male signal terminal 30 slides along one of the vertical wide surfaces 810 (i.e., the electrical contact surface 810) of the female signal terminal 80 toward the root 813 of the female signal terminal 80, and finally still presses against the electrical contact surface 810; and the horizontal contact finger 814 of the female signal terminal 80 slides along one of the vertical wide surfaces 310a (i.e., the electrical contact surface 310a) of the male signal terminal 30 toward the root 313 of the male signal terminal 30, and finally presses against the electrical contact surface 310a. In this embodiment, the one of the vertical wide surfaces 310a (i.e., the electrical contact surface 310a) refers to the horizontal contact finger 814 of the female signal terminal 80 sliding along one of the vertical wide surfaces 310a (i.e., the electrical contact surface 310a) of the male signal terminal 30 toward the root 313 of the male signal terminal 30, and finally presses against the electrical contact surface 310a. Fig. 9 The vertical wide surface 810 (ie, the electrical contact surface 810) is the vertical wide surface located at the front of the signal terminal 30 when viewed from the viewing direction. Fig. 9 The vertical wide surface located on the back side of the female signal terminal 80 when viewed from the viewing direction.

[0089] To further explain, Fig.10 As shown, after the male signal terminal 30 is docked with the female signal terminal 80, the position and docking method of the electrical contact between the male signal terminal 30 and the female signal terminal 80 are different from the traditional structure. The traditional structure only relies on the elastic free end of the terminal for electrical contact, or relies on the free end of the female terminal to contact and cooperate with the fixed end of the male terminal. However, after docking with the present invention, the female signal terminal 80 and the male signal terminal 30 form two electrical contact parts, for example: the horizontal contact finger 314 of the male signal terminal 30 forms an electrical contact with the electrical contact surface 810 of the female signal terminal 80, and the horizontal contact finger 814 of the female signal terminal 80 forms an electrical contact with the electrical contact surface 310a of the male signal terminal 30, and the contact positions of the two are staggered front and back, so as to minimize the residual root.

[0090] The present invention can change the electrical contact structure, position and quantity of the female signal terminal 80 and the male signal terminal 30, not only to change the ratio of the capacitive reactance and the inductive reactance within the same impedance, but also to reduce the generation of residual roots, which is beneficial to improving the signal transmission quality. Fig.15 , Fig.16 shown.

[0091] In summary, the high-speed backplane connector 1 and the high-speed connection system 100 of the present invention change the length of adjacent signal terminals by improving the docking structure of the signal terminals 30 and 80, and the horizontal contact fingers thereof also adopt a staggered design to adjust the inductance and capacitance, and can change the ratio of capacitive reactance to inductive reactance within the same impedance, thereby achieving better signal transmission. In addition, the high-speed connection system 100 of the present invention can form a double contact effect when the male and female signal terminals are docked, and the contact position is changed, thereby reducing the residual roots, so as to further improve the signal transmission quality, so that the present invention can be applied to high-density and high-speed (25Gbps to 56Gbps) transmission environments, meeting the requirements of high-density and high-speed signal transmission.

Claims

1. A high-speed backplane connector, comprising an insulating base, and a plurality of terminal modules installed in the insulating base and arranged in parallel; Each terminal module includes an insulating bracket and a row of signal terminals fixed in the insulating bracket; the terminal module also includes a row of grounding terminals, the row of grounding terminals is arranged between the row of signal terminals at intervals; and the row of grounding terminals is connected together through a grounding plate to form a one-piece structure; Each signal terminal includes a docking section, a mounting section, and an intermediate section located between the docking section and the mounting section; wherein the docking section extends from the front edge of the insulating bracket, the mounting section extends from the rear edge of the insulating bracket, and the intermediate section is retained in the insulating bracket; Features: The docking section has two opposite vertical wide surfaces and two opposite horizontal narrow surfaces. The docking section includes a head, a root, and a horizontal contact finger, wherein the horizontal contact finger is formed on the head and extends from one of the horizontal narrow surfaces to one of the vertical wide surfaces. The horizontal contact finger and one of the vertical wide surfaces together constitute the electrical contact portion of the signal terminal. Wherein, the butting sections of at least two adjacent signal terminals in the terminal module have different lengths, and the horizontal contact fingers of the two adjacent signal terminals are arranged in a front-to-back staggered manner; Each grounding terminal includes a mating end and a fixed end, and the mating end and the fixed end of each row of grounding terminals are connected through the grounding plate; wherein the mating end has a horizontal contact finger, and the horizontal contact finger is formed by bending from one of the horizontal narrow surfaces of the mating end; in the terminal module, the mating end of the grounding terminal is the same length as the longer docking section in the adjacent signal terminal in the same row; the length of the horizontal contact finger of the grounding terminal along the front-to-back direction is greater than the length of the horizontal contact finger of the signal terminal.

2. The high-speed backplane connector according to claim 1, wherein: The horizontal contact refers to a vertical wide surface perpendicular to the butt joint section.

3. The high-speed backplane connector according to claim 1, wherein: The head is also formed with an inclined guide surface, which is located in front of the horizontal contact finger.

4. The high-speed backplane connector according to claim 1, wherein: Among the two adjacent signal terminals, the horizontal contact finger of one of the signal terminals is formed by bending from the horizontal narrow surface on the upper side of the head, and the horizontal contact finger of the other signal terminal is formed by bending from the horizontal narrow surface on the lower side of the head, and the horizontal contact fingers of the two adjacent signal terminals are bent and extended in the same direction.

5. The high-speed backplane connector according to claim 1, wherein: Among the two adjacent signal terminals, the horizontal contact finger of one of the signal terminals is formed by bending from the horizontal narrow surface on the lower side of the head, and the horizontal contact finger of the other signal terminal is formed by bending from the horizontal narrow surface on the upper side of the head, and the horizontal contact fingers of the two adjacent signal terminals are bent and extended in the same direction.

6. The high-speed backplane connector according to claim 1, wherein: The signal terminals (S) and the ground terminals (G) in the same column are arranged in the manner of SGSSGSSG and / or GSSGSSGS, while the signal terminals (S) and the ground terminals (G) in two adjacent columns are arranged alternately in these two manners.

7. A high-speed connection system, comprising: a male connector and a female connector; The male connector includes a plurality of terminal modules arranged in parallel, each terminal module includes a row of male signal terminals; each male signal terminal includes a docking section, a mounting section, and an intermediate section between the docking section and the mounting section; the terminal module of the male connector also includes a row of grounding terminals, the row of grounding terminals are arranged between the row of signal terminals at intervals; and the row of grounding terminals are connected together through a grounding plate to form a one-piece structure; The female connector includes a plurality of terminal modules arranged in parallel, each terminal module includes a row of female signal terminals; each female signal terminal includes a docking section, a mounting section, and an intermediate section between the docking section and the mounting section; the terminal module of the female connector also includes a row of grounding terminals, the row of grounding terminals are arranged between the row of signal terminals at intervals; and the row of grounding terminals are connected together through a grounding plate to form a one-piece structure; The invention is characterized in that: the connecting sections of the male signal terminal and the female signal terminal each have two opposite vertical wide surfaces and two opposite horizontal narrow surfaces, and the connecting sections of the male signal terminal and the female signal terminal each include a head, a root, and a horizontal contact finger, wherein the horizontal contact finger is formed on the head and is bent and extended from one of the horizontal narrow surfaces toward one of the vertical wide surfaces; Wherein, the butt joint sections of at least two adjacent signal terminals in each terminal module of the male connector and the female connector have different lengths, and the horizontal contact fingers of the two adjacent signal terminals are arranged in a front-to-back staggered manner; and the butt joint section of the male signal terminal and the corresponding butt joint section of the female signal terminal form a complementary structure when mated with each other; When the male signal terminal and the female signal terminal are mated, the horizontal contact finger of the male signal terminal forms electrical contact with one of the vertical wide faces of the female signal terminal, and the horizontal contact finger of the female signal terminal forms electrical contact with one of the vertical wide faces of the male signal terminal; Wherein, each grounding terminal of the male connector and the female connector includes a mating end and a fixed end, and the mating end and the fixed end of each column of grounding terminals are connected through the grounding plate; wherein the mating end has a horizontal contact finger, and the horizontal contact finger is formed by bending from one of the horizontal narrow surfaces of the mating end; the mating end of the grounding terminal is the same length as the longer docking section of the adjacent signal terminal in the same column; the length of the horizontal contact finger of the grounding terminal along the front-to-back direction is greater than the length of the horizontal contact finger of the signal terminal.

8. The high-speed connection system according to claim 7, characterized in that: During docking and mating, the male signal terminal with a shorter docking section in the male connector forms an electrical connection with the female signal terminal with a longer docking section in the female connector; and the male signal terminal with a longer docking section in the male connector forms an electrical connection with the female signal terminal with a shorter docking section in the female connector.

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