Butt connector and backplane connector

Abstract

The invention relates to a docking connector and a backplane connector. The butt joint connector comprises a shell, a plurality of rows of butt joint structures and contact pins, wherein each row of butt joint structures comprises a plurality of sleeves which are arranged in sequence; the sleeve is in the shape of a cylinder with a through opening and comprises a butt joint end and a fixed end, and the sleeve is connected with the shell through the fixed end; the contact pin is arranged in the shell and connected with the shell, and the contact pin is located in the sleeve. The butting connector is provided with the barrel-shaped sleeve with the through opening, a closed shielding structure can be provided for the connector during signal transmission, and the electromagnetic shielding effect is improved. When the backboard connector is matched with a plug connector, the sleeves can be in contact with different grounding contact pieces respectively, and one grounding contact piece can be connected with two sleeves at the same time, so that the overall grounding of the backboard connector is realized. Therefore, the backboard connector formed by the butting connector has a good shielding effect in a signal transmission process, and has relatively high stability and reliability.

Description

Technical Field

[0001] The present invention relates to the field of electrical connectors, in particular to a docking connector and a backplane connector. Background Art

[0002] Backplane connectors are electronic components designed to interconnect circuit boards. They are commonly used for high-speed signal transmission between multiple boards, particularly in high-performance applications such as data communications, computer servers, industrial automation, and aerospace. Backplane connectors play a vital role in modern electronic devices because they can withstand high frequencies, high speeds, and high power environments.

[0003] High-speed backplane connectors are a type of backplane connector used to connect boards to backplanes and transmit high-speed differential signals, single-ended signals, or high currents. Similar to a bridge in an electrical circuit, high-speed backplane connectors ensure the full functionality of devices by providing fast, stable, low-loss, and high-fidelity transmission of electrical signals.

[0004] Shielding is the "invisible line of defense" of high-speed backplane connectors, and its performance directly determines whether the system can operate stably in high-frequency, high-density environments. Summary of the Invention

[0005] Based on this, it is necessary to provide a docking connector and a backplane connector with good shielding effect and stable signal transmission.

[0006] The present invention provides a docking connector, comprising:

[0007] shell;

[0008] Multiple rows of docking structures are provided on the housing, each row of the docking structures includes a plurality of sleeves arranged in sequence; the sleeves are in the shape of a cylinder with an opening extending therethrough, including a docking end away from the housing and a fixed end arranged opposite to the docking end, the sleeves being connected to the housing via the fixed end;

[0009] A pin is provided on and connected to the shell, and the pin is located in the sleeve.

[0010] The present invention provides a backplane connector, comprising the above-mentioned docking connector and a plug connector, wherein the plug connector comprises:

[0011] case;

[0012] A plurality of daughter card structures stacked in sequence, wherein the daughter card structures are located in the housing;

[0013] Shielding sheets, arranged on both sides of the daughter card structure and connected to the daughter card structure;

[0014] The sub-card structure includes:

[0015] Insulation frame;

[0016] A differential signal conductor, comprising two paired signal conductors, wherein the signal conductors include a signal contact, a signal crimping piece, and a signal transmission section located between the signal contact and the signal crimping piece, wherein the signal transmission section is located within the insulating frame;

[0017] a grounding conductor spaced apart from the differential signal conductor, the grounding conductor comprising a grounding contact, a grounding crimping piece, and a grounding transmission section located between the grounding contact and the grounding crimping piece, the grounding transmission section being located within the insulating frame;

[0018] A torsion section is provided between the grounding contact and the grounding transmission section, the size of the torsion section being adapted to the thickness of the insulating frame, and the grounding transmission section is connected to the first contact arm and the second contact arm of the grounding contact after being twisted by the torsion section;

[0019] The shell is located in the outer shell, the signal contact contacts the pin and is located in the sleeve, the first contact arm and the second contact arm are respectively located in two adjacent sleeves, and the first contact arm and the second contact arm are respectively in contact with two adjacent sleeves.

[0020] The docking connector features a cylindrical sleeve with a through-opening, providing a closed shielding structure for the connector during signal transmission, enhancing electromagnetic shielding effectiveness. When mated with a plug connector, a single sleeve can contact different grounding contacts, and a single contact can simultaneously connect to two sleeves, achieving integrated grounding of the connector. Consequently, the backplane connector comprised of the docking connector exhibits excellent signal shielding during transmission, resulting in high stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 An exploded view of a docking connector according to an embodiment;

[0022] Figure 2 for Figure 1 a top view of the illustrated docking connector;

[0023] Figure 3 for Figure 1 a front view of the illustrated docking connector;

[0024] Figure 4 for Figure 1 A three-dimensional structural diagram of the docking connector shown;

[0025] Figure 5 for Figure 1A structural diagram of the docking connector from another perspective;

[0026] Figure 6 for Figure 4 A schematic diagram of the structure of the docking connector shown with one sleeve removed;

[0027] Figure 7 for Figure 1 A schematic structural diagram of the sleeve of the docking connector shown;

[0028] Figure 8 for Figure 4 A schematic structural diagram of the pins of the docking connector shown;

[0029] Figure 9 for Figure 1 A schematic structural diagram of the housing of the docking connector shown;

[0030] Figure 10 for Figure 1 A schematic structural diagram of the ground plate of the docking connector shown;

[0031] Figure 11 This is a schematic structural diagram of a backplane connector according to an embodiment;

[0032] Figure 12 for Figure 11 a front view of the backplane connector shown;

[0033] Figure 13 for Figure 12 A-A' cross-sectional view of the backplane connector shown;

[0034] Figure 14 for Figure 11 A partial structural diagram of the backplane connector shown;

[0035] Figure 15 for Figure 11 A schematic diagram of the structure of the plug connector in the backplane connector shown;

[0036] Figure 16 is a schematic diagram of a daughter card structure according to an embodiment;

[0037] Figure 17 is a schematic diagram of another type of daughter card structure;

[0038] Figure 18 A schematic diagram of a daughter card structure according to an embodiment with the insulating frame removed;

[0039] Figure 19 is a schematic structural diagram of a grounding conductor according to an embodiment;

[0040] Figure 20 A schematic diagram of a daughter card structure with a shielding sheet installed according to an embodiment;

[0041] Figure 21 is a three-dimensional structural diagram of a housing of a plug connector according to an embodiment;

[0042] Figure 22 for Figure 21 a top view of the housing shown;

[0043] Figure 23 for Figure 21 A structural diagram of the housing from another perspective;

[0044] Figure 24 for Figure 23 a front view of the housing shown;

[0045] Reference numerals:

[0046] 1. Plug connector; 10. Housing; 12. Daughter card structure; 14. Shielding plate; 16. Fixing plate; 110. Base; 120. Sidewall; 112. Plug structure; 112a. First plug cavity; 112b. Second plug cavity; 113. Gap; 114. Accommodation structure; 116. Accommodation slot; 1160. Accommodation cavity; 1162. Isolation member; 1164. Partition; 116a. Signal hole; 1162a. Insertion slot; 1200. Guide member; 140. Groove;

[0047] 120, insulator; 122, differential signal conductor; 124, ground conductor; 126, torsion section; 130, bend; 132, plug guide; 1220, signal contact; 1222, signal crimp; 1224, signal transmission section; 1240, ground contact; 1242, ground crimp; 1244, ground transmission section; 1240a, first contact arm; 1240b, second contact arm; 1241, connection section;

[0048] 2. Docking connector; 20. Housing; 22. Ground plate; 210. Base; 220. Outer wall; 212. Docking structure; 214. Sleeve mounting groove; 216. Pin fixing member; 2120. Sleeve; 2140. Limiting member; 2160. Pin mounting hole; 2122. Pin; 2124. Pin; 200. First through hole; 202. Second through hole; Guide member 222. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] The docking connector of the present invention is applied to a backplane connector. A backplane connector generally includes a male end and a female end. The docking connector of the present invention can be used as the male end of the backplane connector. The docking connector of the present invention will be further described below with reference to embodiments.

[0051] like Figures 1-8 As shown, a docking connector of one embodiment includes a shell 20 and a plurality of rows of docking structures 212 provided on the shell 20. Each row of docking structures 212 includes sleeves 2120 arranged in sequence. The sleeve 2120 is in the shape of a cylinder with an opening passing therethrough, and includes a docking end away from the shell 20 and a fixed end arranged opposite to the docking end. The sleeve 2120 is connected to the shell 20 through the fixed end. The pin 2122 is provided in the shell 20 and connected to the shell 20. The pin 2122 is located in the sleeve 2120.

[0052] The housing 20 is used to support and secure the sleeve 2120 and the pin 2122. In this embodiment, the housing 20 includes a base 210 and an outer wall 220. The outer wall 220 is disposed on opposite sides of the base 210, extending perpendicularly to and connected to the base 210. The base 210 includes an upper surface proximal to the sleeve 2120 and a lower surface distal to the sleeve 2120. The sleeve 2120 and the pin 2122 are both disposed on the upper surface of the base.

[0053] like Figure 3 and Figure 7 As shown, in this embodiment, the sleeve 2120 is in the shape of a through-open tube, including a butt-joint end (i.e., the top end) distal from the housing 20 and a fixed end (i.e., the bottom end) disposed opposite the butt-joint end. The sleeve 2120 is connected to the housing 20 via the fixed end. The sleeve 2120 is in the shape of a through-open rectangular parallelepiped, with the butt-joint end being flush, and the fixed end including narrow sides and wide sides. That is, the fixed end of the sleeve 2120 includes two narrow sides and two wide sides. The wide sides extend from the edge of the sleeve 2120 to form tabs at the fixed end. The width of the tabs is less than the corresponding side length of the sleeve 2120 at the fixed end, thus forming a gap between the tabs and the adjacent narrow sides. When the sleeve 2120 is inserted into the housing 20 via the fixed end, the tabs extend outside the housing 20, and the gaps are locked in the retaining structure of the housing 20, thereby securing the sleeve 2120 in the housing 20. Furthermore, the tabs are provided with snap-fitting elements on either side, and matching recesses are provided within the housing 20 to accommodate and engage the tabs. Pins 2124 are provided on the narrow side, extending through and out of the housing 20 for connection to the PCB. In this embodiment, the sleeve 2120 is integrally formed, reducing the number of soldering steps required during the manufacturing process.

[0054] like Figure 4 and Figure 8As shown, the pin 2122 is connected to the housing 20 and is located within the sleeve 2120. The height of the pin 2122 is less than or equal to the height of the sleeve 2120. When the pin 2122 is inserted into the signal pin of the plug connector, the sleeve 2120 can provide guidance and protection for the insertion of the pin 2122, while also providing a closed shielding structure around the pin 2122 and the signal contact.

[0055] like Figure 9 As shown, in this embodiment, the base 210 includes a sleeve mounting groove 214 and a pin retainer 216 on a surface near the sleeve 2120. The sleeve mounting groove 214 is disposed around the pin retainer 216. The sleeve mounting groove 214 is used to mount the sleeve 2120, with the bottom of the sleeve 2120 accommodated within the sleeve mounting groove 214. The sleeve mounting groove 214 is a through groove of a certain depth, with a stopper 2140 disposed at its bottom. The sleeve mounting groove 214 is generally rectangular, with stoppers 2140 disposed at each of its four corners to maintain and restrict the position of the sleeve 2120. Short and long slits are formed between adjacent stoppers 2140. The short slits allow the pins 2124 of the sleeve 2120 to pass through the housing 20. The long slits allow the tabs of the sleeve 2120 to pass through and be secured to the housing 20. The gap formed between the protruding piece and the adjacent narrow side is locked in the limiting portion 2140 .

[0056] The limiting portion 2140 is connected to the pin fixing member 216 and is integrally formed with the housing 20. The pin fixing member 216 is made of insulating material and includes a mounting hole 2160 for fixing the pin 2122. The mounting hole 2160 is a through hole. Figure 3 、 6 and Figure 8 As shown, in this embodiment, the pins 2122 are straight pins, and there are two pins 2122. The two pins 2122 are fixed in the mounting holes of the pin fixing member 216 and extend outside the housing 20. One end of the pin 2122 is a signal end, and the other end is a mounting end. A latch is provided at the mounting end. The latch extends from the body of the pin 2122 in a direction perpendicular to the body, thereby forming a protrusion structure on both sides of the pin 2122. The mounting hole 2160 is provided with a receiving structure that cooperates with the protrusion structure, thereby securing the pin 2122 in the mounting hole 2160. In this embodiment, there are also two mounting holes 2160, each for accommodating two pins 2122. The two mounting holes 2160 are separated by an insulator.

[0057] like Figure 4 and Figure 9As shown, in this embodiment, the upper surface of the base is provided with multiple rows of docking structures 212, which are arranged in parallel. Each row of docking structures 212 includes multiple sleeves 2120 arranged in sequence. The multiple sleeves 2120 are all located on the same straight line. The sleeves 2120 in adjacent rows are staggered. Staggered arrangement means that the starting point and end point of the sleeves 2120 in adjacent rows are not on a straight line, but are moved up or down a distance in a direction parallel to each other. In addition, the sleeves 2120 in adjacent rows are staggered, and the sleeves 2120 in alternate rows are arranged identically. For example, the starting point 2120 of the sleeve in the first row is offset by a certain distance compared to the starting point of the sleeve 2120 in the second row, and the end point is also offset by the same distance, that is, the starting point and end point of the two are not on the same straight line. The starting point and end point of the sleeves 2120 in the second and third rows are both on the same straight line. The offset distance between adjacent rows of sleeves 2120 is 0.5mm-3mm, and the distance between two pins in the sleeve 2120 is 0.5mm-2mm. Figure 2 As shown, in this embodiment, the offset distance between adjacent rows of sleeves 2120 is 2 mm. The distance h2 between two pins 2122 in the sleeve 2120 is 1.45 mm. In addition, the distance h3 between adjacent rows of docking structures 212 refers to the distance between adjacent rows of pins 2122.

[0058] like Figure 1 and Figure 10 As shown, in this embodiment, the second surface of the base 210 is provided with a ground plate 22, and the ground plate 22 is provided with a first through hole 200 and a second through hole 202. The first through hole 200 is connected to the mounting hole 2160 of the pin fixing member 216. Figure 3 and 5 As shown, in this embodiment, pin 2122 is fixed to mounting hole 2160 and extends out of ground plate 22 through first through hole 200. Second through hole 202 corresponds to the short slit of sleeve mounting slot 214 and communicates with sleeve mounting slot 214. Pin 2124 of sleeve 2120 passes through the short slit and second through hole 202 in sequence, and extends out of second through hole 202 to contact ground plate 22.

[0059] In this embodiment, the sleeve 2120 is made of a conductive metal material commonly used in the art, which is not limited here. The sleeve 2120 is connected to the ground plate 22 to achieve a grounding effect and improve the signal transmission quality of the connector.

[0060] The invention will be further described below by taking an example in which a backplane connector includes the above-mentioned docking connector and a plug connector mated with the docking connector.

[0061] like Figure 1-24 As shown, a backplane connector according to an embodiment includes a plug connector 1 and a docking connector 2 .

[0062] The docking connector includes:

[0063] Housing 20;

[0064] Multiple rows of docking structures 212 are provided on the housing 20, and each row of docking structures 212 includes a plurality of sleeves 2120 arranged in sequence. The sleeves 2120 are cylindrical in shape with an opening extending therethrough, and include a docking end away from the housing 20 and a fixed end opposite the docking end. The sleeves 2120 are connected to the housing 20 via the fixed end.

[0065] The pin 2122 is disposed on the housing 20 and connected to the housing 20 . The pin 2122 is located inside the sleeve 2120 .

[0066] The plug connector 1 comprises:

[0067] Housing 10;

[0068] A plurality of daughter card structures 12 stacked in sequence, the daughter card structures 12 being located in the housing 10;

[0069] Shielding sheets 14 are provided on both sides of the daughter card structure 12 and connected to the daughter card structure 12;

[0070] The daughter card structure 12 includes:

[0071] Insulation frame 120;

[0072] The differential signal conductor includes two paired signal conductors. The signal conductor 122 includes a signal contact 1220, a signal crimping piece, and a signal transmission section 1224 located between the signal contact 1220 and the signal crimping piece 1222. The signal transmission section 1224 is located in the insulating frame 120.

[0073] The ground conductor 124 is spaced apart from the differential signal conductor 122 . The ground conductor 124 includes a ground contact 1240 , a ground crimping member 1242 , and a ground transmission segment 1244 located between the ground contact 1240 and the ground crimping member 1242 . The ground transmission segment 1244 is located within the insulating frame 120 .

[0074] A torsion section 126 is provided between the ground contact 1240 and the ground transmission section 1244. The size of the torsion section 126 is adapted to the thickness of the insulating frame 120. The ground transmission section 1244 is connected to the first contact arm 1240a and the second contact arm 1240b of the ground contact 1240 after being twisted by the torsion section 126.

[0075] The housing 10 is located inside the outer shell 20 , the signal contact 1220 contacts the pin 2122 and is located inside the sleeve 2120 , and the first contact arm 1240 a and the second contact arm 1240 b contact two adjacent sleeves 2120 respectively.

[0076] The signal contact 1220 of the plug connector contacts the pin 2122 of the mating connector, and both are located within the sleeve 2120. The sleeve 2120 forms a closed shield structure around the signal contact 1220 and the pin 2122, improving the shielding effect of the connector. Simultaneously, the ground contact 1240, through the first contact arm 1240a and the second contact arm 1240b, simultaneously contacts both sleeves 2120. Furthermore, a single sleeve 2120 can simultaneously contact both ground contacts 1240, achieving integrated grounding of the backplane connector and further improving the stability and quality of the connector's signal transmission.

[0077] The grounding contact 1240 can contact the sleeve 2120 either with the inner wall or the outer wall of the sleeve 2120, both of which can achieve a grounding effect. Furthermore, both the first contact arm 1240a and the second contact arm 1240b can contact either the outer or inner wall of the sleeve 2120, or one can contact the inner wall of the sleeve 2120 while the other contacts the outer wall of the sleeve 2120. In this embodiment, both the first contact arm 1240a and the second contact arm 1240b are located within the sleeve 2120 and abut the inner wall of the sleeve 2120.

[0078] The ground transmission section 1244 is twisted by the torsion section 126 and connected to the first contact arm 1240a and the second contact arm 1240b of the ground contact 1240. "Twisting" here refers to the twisting deformation of the torsion section 126 connected to the ground contact 1240, which causes the ground contact 1240 and the ground transmission section 1244 to be located in different planes. The dimensions of the torsion section 126 are adapted to the thickness of the insulating frame 120, allowing it to be encapsulated and fixed within the insulating frame 120, thereby securing the ground conductor 124 within the insulating frame 120. After being twisted and extended by the torsion section 126, the ground transmission section 1244 bifurcates into the first contact arm 1240a and the second contact arm 1240b, forming the ground contact 1240. In this embodiment, the torsion section 126 has a torsion angle of 44°-146°, enabling the first contact arm 1240a and the second contact arm 1240b to contact the subsequent sleeve. Furthermore, in this embodiment, the torsion angle of the torsion section 126 is 90°. When the torsion angle is 90°, it can more accurately contact the sleeve, thereby improving the shielding effect.

[0079] The first ends of the first and second contact arms 1240a, 1240b are connected to the torsion section 126. The first and second contact arms 1240a, 1240b bend away from each other from the first ends to form a bent portion 130. The arms then gradually approach each other along the extension direction, then extend toward the distal ends and gradually approach each other along the extension direction. The distance between the first and second contact arms 1240a, 1240b at the distal ends is smaller than the distance at the bent portion 130. The distance between the first and second contact arms 1240a, 1240b gradually decreases from the first end toward the distal ends, forming a spatial structure that is narrow at the top and wide at the bottom. The bent portion 130 is configured to be secured to the edges of two adjacent sleeves. When the first and second contact arms 1240a, 1240b are secured to the edges of the sleeves via the bent portion 130, the distal ends with the narrower distance between them can stably abut the sleeves, thereby improving the stability of the contact between the grounding contact 1240 and the sleeves.

[0080] In this embodiment, the distal ends of the first and second contact arms 1240a, 1240b are bent outward to form a plug guide 132. The distance between the first and second contact arms 1240a, 1240b at their closest point in the plug guide 132 is smaller than the distance at the bent portion 130. When the plug connector 2 is mated with the mating connector, the plug guide 132 guides the grounding contact 1240 for smooth entry into the sleeve 2120. In this embodiment, the plug guide 132 is generally strip-shaped and integrally formed with the grounding contact 1240. The plug guide 132 ensures smooth entry of the grounding contact 1240 into the sleeve 2120 when the mating connector 2 is inserted into the plug connector 1. The insertion guide portion 132 is bent toward the differential signal conductor 122 , so that the first contact arm 1240 a and the second contact arm 1240 b have arc-shaped protrusions in a direction toward each other. The arc-shaped protrusions form contact points when in contact with the sleeve 2120 .

[0081] Furthermore, a connecting section 1241 is provided between the torsion section 126 and the grounding contact piece 1240. The connecting section is located in a different plane from the grounding transmission section through the torsion section 126, and the first contact arm 1240a and the second contact arm 1240b are located on opposite sides of the connecting section. The connecting section 1241 is roughly a rectangular sheet structure, one side of the rectangle is connected to the torsion section 126, and the other side is provided with the first contact arm 1240a and the second contact arm 1240b, and the first contact arm 1240a and the second contact arm 1240b extend from the connecting section 1241 in a direction away from the connecting section 1241. That is, the first contact arm 1240a and the second contact arm 1240b are both conductors with a set length so as to subsequently contact the grounding component of the docking connector 2. The connecting section 1241, the torsion section 126 and the grounding transmission section 1244 are integrally formed, and are all made of metal conductive materials commonly used in this field. As Figure 6 and Figure 8 As shown, during manufacturing, the torsion section 126 is twisted relative to the plane of the connecting section 1241, so that the plane of the connecting section 1241 is different from the plane of the connecting section 1241. The first contact arm and the second contact arm are located on opposite sides of the connecting section 1241 through the bent portion 130, thereby facilitating contact with two different sleeves 2120.

[0082] In this embodiment, the first contact arm 1240a and the second contact arm 1240b are arranged along the length of the connecting section 1241, that is, the first contact arm 1240a and the second contact arm 1240b are relatively offset. Relatively offset means that the first contact arm 1240a and the second contact arm 1240b are arranged face to face, but with a certain angle or position offset between them. The offset arrangement of the first contact arm 1240a and the second contact arm 1240b can reduce the volume occupied by the grounding contact 1240, facilitating the miniaturization of the connector. It should also be noted that the offset distance between the first contact arm 1240a and the second contact arm 1240b is less than the width of the inner wall of the sleeve 2120 with which they abut, so that the first contact arm 1240a and the second contact arm 1240b can be simultaneously located within both sleeves 2120 and abut against the inner walls of both sleeves 2120. In other embodiments, the first contact arm 1240a and the second contact arm 1240b can also be arranged in other ways, such as face to face.

[0083] The daughter card structure 12 (wafer) is a functional unit module of the plug connector 1, such as Figure 16-Figure 18 As shown, in this embodiment, the daughter card structure 12 includes an insulating frame 120, differential signal conductors 122, and ground conductors 124. The insulating frame 120 can be a commonly used insulating frame in the art, used to hold or secure the differential signal conductors 122 and ground conductors 124. Signal contacts 1220 of the differential signal conductors 122 extend from the insulating frame 120 to contact the pins 2122 of the docking connector 2, enabling signal transmission between the docking connector 2 and the plug connector 1. Signal crimping connectors 1222 extend from the insulating frame 120 for connection to the PCB. Signal crimping connectors 1222 can be fisheye terminals. In other embodiments, signal crimping connectors 1222 can also be other types of terminals in the art, such as straight pins, without limitation. Similarly, the ground conductor 124 is also provided with a grounding crimping connector 1242 for connection to the PCB. Grounding crimping connector 1242 can also have the same structure as signal crimping connector 1222, such as a fisheye terminal or a straight pin. The differential signal conductors 122 and the ground conductors 124 may be connected to the insulating frame 120 in a manner commonly used in the art, and are not limited here.

[0084] The ground conductor 124 provides a stable reference voltage for the differential signal conductors 122, ensuring accurate interpretation of signal voltage differences. Furthermore, the ground conductor 124 forms a shielding layer around the differential signal conductors 122, preventing interference from external electromagnetic fields on the signal lines and reducing crosstalk between the differential signal conductors 122. The differential signal conductors 122 and the ground conductor 124 are spaced apart and arranged adjacent to each other. Ground conductors 122 are located on both sides of the differential signal conductors 122, providing shielding for signal transmission within the differential signal conductors 122. A single daughter card structure 12 may include multiple differential signal conductors 122 and ground conductors 124, spaced apart from each other, for example, in the pattern BABABABAB (A represents the differential signal conductor 122, and B represents the ground conductor 124). It should be noted that the number of differential signal conductors 122 or ground conductors 124 included in each daughter card structure 12 can be selected based on practical needs and is not limited herein.

[0085] By twisting the torsion section 126, the ground contact 1240 can simultaneously contact the two sleeves 2120 of the docking connector 2 through the first contact arm 1240a and the second contact arm 1240b. This also allows a single sleeve 2120 to simultaneously contact both ground contacts 1240, allowing the entire connector to share a common ground and improving the overall shielding effectiveness of the connector. Furthermore, twisting the torsion section 126 can cause the connecting section 1241 to protrude beyond the plane of the differential signal conductors 122. That is, both ends of the connecting section 1241 extend beyond the insulating frame 120, facilitating subsequent connection to the shielding sheet 14 and improving the shielding effectiveness.

[0086] The connecting section 1241 is twisted at an angle of 44° to 146° relative to the plane of the differential signal conductors 122. In this embodiment, the twist angle is 90°. That is, the plane of the connecting section 1241 is perpendicular to the plane of the differential signal conductors 122. This minimizes the distance between the two signal contacts 1220 and improves the ease of connection between the ground conductor 124 and the shielding sheet 14.

[0087] like Figure 21-24 As shown, in this embodiment, the shell 10 includes a first surface and a second surface arranged opposite to each other, the first surface is provided with multiple rows of plug-in structures 112, and the second surface is provided with multiple rows of accommodating structures 114. The accommodating structures 114 correspond to the plug-in structures 112 and are connected to the plug-in structures 112.

[0088] The surface of the housing 10 closest to the daughter card structure 12 is the first surface, and the surface away from the daughter card structure 12 is the second surface. The plug-in structure 112 on the first surface is used to accommodate the signal contacts 1220 and ground contacts 1240 of the daughter card structure 12, while the housing structure 114 on the second surface is used to accommodate the sleeve 2120 and pins 2122 of the docking connector 2. The plug-in structure 112 has multiple columns on the first surface, the same number of columns as the number of daughter card structures 12. For example, when there are eight daughter card structures 12, the corresponding number of columns of plug-in structures 112 is also eight, with each column of plug-in structures 112 being provided with one daughter card structure 12. Similarly, the housing structure 114 has multiple columns on the second surface, the same number of columns as the number of daughter card structures 12. That is, each column of plug-in structures 112 corresponds to a column of housing structures 114. The receiving structure 114 is in communication with the plugging structure 112 , so that the signal contacts 1220 and the ground contacts 1240 of the daughter card structure 12 can be inserted into and retained in the plugging structure 112 and the receiving structure 114 , so as to contact the sleeve 2120 and the pins 2122 therein.

[0089] Furthermore, if Figure 22 As shown, in this embodiment, the plug structure 112 includes a first plug cavity 112a for accommodating the signal contact 1220 and a second plug cavity 112b for accommodating the ground contact 1240. In each row of the plug structure 112, the number of the first plug cavity 112a and the number of the second plug cavity 112b are the same as the number of the signal contacts 1220 and the ground contacts 1240. For example, Figure 16 Taking the illustrated daughter card structure 12 as an example, this daughter card structure 12 includes four differential signal conductors 122, each of which is a differential signal pair, and each differential pair includes two differential signals. Accordingly, the plug-in structure 112 corresponding to this daughter card structure 12 includes eight first plug-in cavities 112a, each for receiving eight differential signal contacts 1220. Ground contacts 1240 are provided on both sides of each differential signal pair. Ground contacts 1240 include a first contact arm 1240a and a second contact arm 1240b. Each first contact arm 1240a corresponds to one second plug-in cavity 112b, and each second contact arm 1240b corresponds to one second plug-in cavity 112b. Therefore, the number of first plug-in cavities 112a corresponds to the number of differential signals, and the number of second plug-in cavities 112b corresponds to the number of first contact arms 1240a and second contact arms 1240b.

[0090] An insulating structure is provided between two adjacent first insertion cavities 112a, and between a first insertion cavity 112a and an adjacent second insertion cavity 112b, to separate the two adjacent first insertion cavities 112a, and to separate a first insertion cavity 112a from an adjacent second insertion cavity 112b. Both the first insertion cavity 112a and the second insertion cavity 112b are through-hole structures.

[0091] Please continue reading Figure 20-22 In this embodiment, adjacent rows of plug structures 112 are provided with gaps 113 for accommodating shielding sheets 14. As described above, shielding sheets 14 are provided on opposite sides of the daughter card structure 12. The two shielding sheets 14 form a receiving space at one end near the signal contact 1220, which is used to accommodate the plug structure 112. When the daughter card structure 12 is installed in the housing 10, the signal contact 1220 is inserted into the first plug cavity 112a, and the ground contact 1240 is inserted into the second plug cavity 112b. The shielding sheets 14 on either side of the signal contact 1220 and ground contact 1240 are inserted into the gaps 133 between two adjacent plug structures 112. The width of the accommodating space formed by the two shielding sheets 14 at one end near the signal contact 1220 matches the width of the plug-in structure 112, so that the shielding sheets 14 can be stably clamped on both sides of the plug-in structure 112, thereby improving the stability of the sub-card structure 12 fixation, and enhancing the stability of the plug-in position of the signal contact 1220 and the ground contact 1240 in the first plug-in cavity 112a and the second plug-in cavity 112b.

[0092] The shape of the first plug-in cavity 112a and the shape of the second plug-in cavity 112b can be selected according to actual conditions, for example, they can be square or round. The depth of the first plug-in cavity 112a and the depth of the second plug-in cavity 112b are selected according to the length of the signal contact 1220 and the length of the ground contact 1240, and are not limited here. In addition, the setting positions of the first plug-in cavity 112a and the second plug-in cavity 112b correspond to the positions of the signal contact 1220 and the ground contact 1240. For example, in a row of plug-in structures 112, if the signal contacts 1220 are all on the same straight line, then the first plug-in cavity 112a is also on the same straight line. In this embodiment, since the ground contact 1240 is twisted, the first contact arm 1240a and the second contact arm 1240b are offset, then correspondingly, the second plug-in cavity 112b for accommodating the first contact arm 1240a and the second plug-in cavity 112b for accommodating the second contact arm 1240b also need to be offset. For example, in Figure 22 In the embodiment, two adjacent second insertion cavities 112b are staggered to match the arrangement positions of the first contact arm 1240a and the second contact arm 1240b.

[0093] In this embodiment, two pins 2122 are provided in the sleeve 2120. When the differential signal conductors 122 of the plug connector 1 are a differential signal pair, the two pins 2122 are in contact with the two differential signals respectively. In this embodiment, the signal contact 1220 of the differential signal pair is a duckbill structure, which is used to accommodate the pins 2122 in the sleeve 2120. The duckbill structure means that the front end of the signal contact 1220 is designed to be shaped like a duckbill, with two symmetrical contact arms, similar to the two beaks of a duckbill. When the docking connector 2 is mated with the plug connector 1, the pin 2122 is inserted between the two contact arms of the duckbill structure. The duckbill structure has good elasticity and can provide appropriate pressure when the pin 2122 is inserted, ensuring a stable electrical connection and reducing the risk of poor contact.

[0094] Next, the accommodating structure 114 on the second surface of the housing 10 will be introduced.

[0095] The housing 10 has a second surface, the surface that mates with the docking connector 2, provided with a receiving structure 114. The receiving structure 114 corresponds to and communicates with the plugging structure 112. Signal contacts 1220 inserted into the first plugging cavity 112a of the plugging structure 112 can extend into the receiving structure 114 to disengage with the pins 2122 of the docking connector 2. The second surface is provided with multiple rows of receiving structures 114, the same number of rows as the plugging structure 112. For example, if the plugging structure 112 has eight rows, the number of receiving structures 114 is also eight, and the rows of receiving structures 114 are arranged in parallel.

[0096] See also Figure 23 and Figure 24 In this embodiment, each column of the accommodating structure 114 includes a plurality of accommodating slots 116, and the plurality of accommodating slots 116 are arranged in sequence, and adjacent accommodating slots 116 are separated by insulating components. The accommodating slots 116 surround the first plug-in cavity 112a, and the sleeve 2120 is located in the accommodating slots 116 via the docking end and is arranged around the first plug-in cavity 112a. The signal contact 1220 and the pin 2122 are located in the first plug-in cavity 112a and the accommodating slot 116. The sleeve 2120 surrounds the signal contact 1220 and the pin 2122, forming a closed shielding structure around the signal contact 1220 and the pin 2122 to reduce external interference with signal transmission. The material of the insulating component is the same as that of the housing 10, and can be a material commonly used in the art, and is not limited here. In this embodiment, the shape of the accommodating slot 116 is an O-shaped or roughly rectangular closed structure, and the shape of the accommodating slot matches the shape of the docking end of the sleeve 2120.

[0097] Please continue reading Figure 24The accommodating structure 114 also includes a signal hole 116a and an isolating member 1162, and the isolating member 1162 surrounds the signal hole 116a. The signal hole 116a corresponds to the first plug-in cavity 112a and is connected to the first plug-in cavity 112a. The accommodating groove 116 is formed by being recessed a certain distance from the second surface of the shell 10, or it can be formed by cutting or chiseling on the second surface. The accommodating groove 116 has a certain width to accommodate the sleeve 2120 of the docking connector 2. The signal hole 116a and the accommodating groove 116 form a nested rectangle, and the two have the same center point. In other embodiments, the shape of the signal hole 116a and the accommodating groove 116 can also be circular, which is not limited here. The signal hole 116a and the accommodating groove 116 are both O-shaped or roughly rectangular closed structures.

[0098] The receiving groove 116 is a through groove to facilitate the insertion of the sleeve 2120. The receiving groove 116 is a closed annular structure, wherein, in the same row of receiving structures 114, the section of adjacent receiving grooves 116 close to each other is an insertion slot 1162a. That is, the insertion slot 1162a is a part of the receiving groove 116, and the insertion slot 1162a is connected to the second insertion cavity 112b. That is, the first contact arm 1240a and the second contact arm 1240b are located in the second insertion cavity 112b and the insertion slot 1162a. Figure 24 Taking the insertion slot 1162a shown as an example, both narrow sections (e.g., the upper and lower ends) of the receiving slot 116 include slots 1162a. That is, each receiving slot 116 includes two insertion slots 1162a. Furthermore, a retaining structure is provided at the bottom of the receiving slot 116 to prevent the sleeve 2120 from protruding beyond the first surface of the housing 10. The spacer 1162 and the retaining structure are integrally formed with the housing 10.

[0099] In this embodiment, each signal hole 116a corresponds to two first plug-in cavities 112a, and the two first plug-in cavities 112a are respectively used to accommodate differential signal pairs. Figures 21-24 As shown, taking one of the receiving slots 116 as an example, the two first plug-in cavities 112a are separated by an insulating component when viewed from the first surface of the housing 10. When viewed from the second surface of the housing 10, the two first plug-in cavities 112a correspond to one signal hole 116a.

[0100] Furthermore, each column of the receiving structure 114 includes a plurality of receiving slots 116, and adjacent receiving slots 116 are separated by partitions 1164. In this embodiment, since the receiving slots 116 are a closed structure, adjacent receiving slots 116 in each column of the receiving slots 116 are isolated. The isolation structure between each receiving slot 116 is the partition 1164. Therefore, the partition 1164 is not a separately provided component, but a structure formed between adjacent receiving slots 116 due to the closed structure of the receiving slot 116. The partition 1164 is a part of the shell 10 and is integrally formed with the shell 10. Since the partition 1164 is formed between adjacent receiving slots 116, each partition 1164 is provided with a slot 1162a on both sides. Because the insertion slot 1162a communicates with the second insertion cavity 112b, the insertion slots 1162a on either side of the partition 1164 correspond to the first contact arm 1240a and the second contact arm 1240b of the grounding contact 1240, respectively. When the plug connector 1 and the docking connector 2 are mated, the first contact arm 1240a and the second contact arm 1240b of the grounding contact 1240 respectively contact two adjacent sleeves 2120. In other words, a single grounding contact 1240 simultaneously contacts two sleeves 2120 via the first contact arm 1240a and the second contact arm 1240b, achieving a common ground for the entire connector and improving the overall grounding effect.

[0101] like Figure 12 and 13 As shown, the first contact arm 1240a and the second contact arm 1240b of the ground contact member 1240 are respectively in contact with the inner walls of the sleeve P1 and the sleeve P2, so that the ground contact member 1240 is in contact with the sleeve P1 and the sleeve P2 at the same time. Figure 14 The grounding contact G1 contacts the two sleeves at the same time, and the grounding contact G2 also contacts the two sleeves at the same time. The overall grounding of the connector is achieved by the sleeve contacting the grounding contact G1 and the grounding contact G2 at the same time.

[0102] The configuration of the receiving structure 114 will be further described below.

[0103] As described above, the plug connector 1 includes a plurality of daughter card structures 12 arranged in a stacked manner. The structures of the plurality of daughter card structures 12 can be identical or different. For example, the daughter card structure 12 can be configured as follows: Figure 16 The structure shown in FIG. Figure 17 The structure shown, or both Figure 16 and Figure 17 The structure shown. Figure 1 and Figure 2 Taking the plug connector 1 shown as an example, the plug connector 1 can be made of 8 pieces Figure 16 The daughter card structure 12 shown can also be 8 pieces Figure 17 The daughter card structure 12 shown can also use 4 Figure 16 The daughter card structure 12 and 4 blocks shown Figure 17 The daughter card structure 12 is shown.

[0104] The following will be based on the plug connector 1 including 4 pieces Figure 16 The daughter card structure 12 (hereinafter referred to as "first type") and the four Figure 17 The arrangement of the receiving structure 114 is described using the illustrated daughter card structure 12 (hereinafter referred to as the "second type") as an example. When the plug connector 1 includes two types of daughter card connectors, the two types are arranged alternately, that is, stacked in a sequential order of first type / second type / first type / second type... The first and second types of daughter card structures 12 differ in the structure of the insulating frame 120. When the first and second types of daughter card structures are arranged adjacent to each other, the differential signal conductors 122 in the first type of daughter card structure 12 are offset from the differential signal conductors 122 in the second type of daughter card structure 12.

[0105] When the types of adjacent daughter card structures 12 are different, the arrangement of the plug-in structures 112 corresponding to the daughter card structures 12 will also change accordingly. Similarly, the arrangement of the receiving structures 114 corresponding to the daughter card structures 12 will also change. Figure 23 and Figure 24 As shown, in this embodiment, the containment structures 114 in adjacent rows are staggered, with the offset between the containment structures 114 in adjacent rows ranging from 0.5 mm to 3 mm. Furthermore, in this embodiment, the offset between the containment structures 114 in adjacent rows is 2 mm. Specifically, the containment structures 114 in odd-numbered rows are arranged identically, and the containment structures 114 in even-numbered rows are arranged identically, with the even-numbered rows being offset relative to the odd-numbered rows. "Identical" here means that the starting and ending points of the containment structures 114 are all on the same straight line. For example, the four starting and ending points of the containment structures 114 in four odd-numbered rows are all on the same straight line. "Offset" means that the starting and ending points of the containment structures 114 in adjacent rows are not on a straight line, but are instead offset a distance upward or downward in a direction parallel to each other. For example, the containment structures 114 in row L1 and row L2 are offset by 2 mm. That is, the offset of the receiving structures 114 in the L2 column is 2 mm compared to the receiving structures 114 in the L1 column. The offset can be expressed as the distance between the starting ends of adjacent columns, as shown by h1 in the figure.

[0106] Since the accommodating structure 114 and the plug-in structure 112 are arranged correspondingly, when the accommodating structure 114 is arranged in a staggered manner, the corresponding plug-in structure 112 is also arranged in a staggered manner, wherein the offset of the plug-in structure 122 is the same as the offset of the accommodating structure 114, which will not be repeated here.

[0107] The staggered arrangement of the accommodation structures 114 can reduce the interference of differential signals in adjacent columns and improve the signal transmission quality of the connector.

[0108] In other embodiments, when the sub-card structure 12 of the plug-in connector 1 is of the same type, the accommodating structures 114 in adjacent columns have the same arrangement, that is, the starting ends of all the accommodating structures 114 are on the same straight line, and the ending ends are also on the same straight line.

[0109] In addition, the housing 10 of this embodiment adopts an integrated structure and is made of an insulating material. The type of the insulating material can be any commonly used insulating material in the art and is not limited here.

[0110] like Figure 21 As shown, in this embodiment, the housing 10 includes a base 110 and sidewalls 120 disposed on opposite sides of the base 110. The base 110 and sidewalls 120 are integrally formed. The base 110 is open and has an enclosing structure. The daughter card structure 12 engages with the plug-in structure 112 through the opening of the base 110 and is partially accommodated within the base 110. The inner walls of the sidewalls 120 are provided with a plurality of parallel slots for engaging the insulating frame 120 of the daughter card structure 12, thereby retaining the daughter card structure 12 in the housing 10. The number of slots is the same as the number of daughter card structures 12.

[0111] The side wall 120 extends from the base 110 in a direction away from the base 110, and the side wall 120 is used to cooperate with the housing 20 of the docking connector 2. In this embodiment, a guide member 1200 is provided on the outer surface of the side wall 120. The guide member 1200 is used to provide guidance and fixation when cooperating with the docking connector 2. The guide member 1200 is arranged in an extending manner along the side wall 120 and is integrally formed with the side wall 120. The structure of the guide member 1200 can be selected according to actual conditions. For example, the guide member 1200 can be a guide rib or a guide groove. The number of guide members 1200 can be selected according to actual needs and is not limited here.

[0112] In this embodiment, the torsion angle of the torsion section 126 is 90°, the sleeve 2120 enters the accommodating groove 116 through the plug-in guide portion 132 and is located in the accommodating groove 116, the bending portion 130 of the first contact arm 1240a and the second contact arm 1240b is located at the edge of the two adjacent sleeves 2120, the ends of the first contact arm 1240a and the second contact arm 1240b respectively extend into the two adjacent sleeves 2120 through the plug-in guide portion 132 and abut against the inner wall of the sleeve 2120 through the ends, the pin 2122 is inserted into the duckbill structure of the signal contact 1220, and the sleeve 2120 is surrounded by the pin 2122 and the signal contact 1220.

[0113] The above-mentioned backplane connector has the following advantages:

[0114] (1) By twisting the torsion section 126, the first contact arm 1240a and the second contact arm 1240b can respectively contact two adjacent sleeves 2120. At the same time, one sleeve 2120 can simultaneously contact two grounding contacts 1240, thereby improving the overall grounding effect of the backplane connector and ensuring the quality of signal transmission.

[0115] (2) The signal contact 1220 has a duckbill structure, and the pin 2122 has a straight pin structure. The signal contact 1220 utilizes the elasticity of the duckbill structure to stably hold the pin 2122 in the signal contact 1220, thereby ensuring a stable electrical connection and reducing the risk of poor contact.

[0116] (3) The sleeve 2120 is a through-tube structure, which can form a closed shielding structure around the signal contact 1220 and the pin 2122, and has a good shielding effect.

[0117] (4) The staggered arrangement of the sleeve 2120 reduces the crosstalk effect of the outside world on signal transmission.

[0118] (5) The ground contact 1240 is connected to the sleeve 2120 by twisting, eliminating the welding step and saving manufacturing costs.

[0119] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A docking connector, characterized in that: include: shell; Multiple rows of docking structures are provided on the housing, each row of the docking structures includes a plurality of sleeves arranged in sequence; the sleeves are in the shape of a cylinder with an opening extending therethrough, including a docking end away from the housing and a fixed end arranged opposite to the docking end, the sleeves being connected to the housing via the fixed end; A pin is provided on and connected to the shell, and the pin is located in the sleeve.

2. The docking connector according to claim 1, wherein: The docking structures in adjacent rows are staggered.

3. The docking connector according to claim 2, wherein: The shell is provided with a sleeve mounting groove and a pin fixing piece. The shape of the sleeve mounting groove matches the shape of the fixed end. The sleeve mounting groove surrounds the pin fixing piece. The sleeve mounting groove and the pin fixing piece are integrally formed with the shell.

4. The docking connector according to claim 3, wherein: The fixing end is provided with a pin, the fixing end is located in the installation slot, and the pin passes through the sleeve installation slot and extends out of the shell.

5. The docking connector according to claim 4, wherein: The fixed end includes two oppositely arranged short sides and two oppositely arranged wide sides, the pins are arranged on the short sides, the wide sides are provided with convex pieces, and the convex pieces pass through the sleeve mounting groove to pass through the shell and are fixed to the shell.

6. The docking connector according to claim 3, 4 or 5, characterized in that: The pins are straight pins, there are two pins, and the two pins are connected to the housing through the pin fixing piece and extend out of the housing.

7. The docking connector according to claim 4 or 5, characterized in that: It also includes a grounding plate, which is arranged on the outside of the shell, and the pins pass through the grounding plate and contact the grounding plate.

8. A backplane connector, characterized in that: The invention comprises the docking connector according to claim 1, and a plug connector mating with the docking connector; the plug connector comprises: case; A plurality of daughter card structures stacked in sequence, wherein the daughter card structures are located in the housing; Shielding sheets, arranged on both sides of the daughter card structure and connected to the daughter card structure; The sub-card structure includes: Insulation frame; A differential signal conductor, comprising two paired signal conductors, wherein the signal conductors include a signal contact, a signal crimping piece, and a signal transmission section located between the signal contact and the signal crimping piece, wherein the signal transmission section is located within the insulating frame; a grounding conductor spaced apart from the differential signal conductor, the grounding conductor comprising a grounding contact, a grounding crimping piece, and a grounding transmission section located between the grounding contact and the grounding crimping piece, the grounding transmission section being located within the insulating frame; A torsion section is provided between the grounding contact and the grounding transmission section, the size of the torsion section being adapted to the thickness of the insulating frame, and the grounding transmission section is connected to the first contact arm and the second contact arm of the grounding contact after being twisted by the torsion section; The housing of the docking connector is located in the outer shell, the signal contact contacts the pin and is located in the sleeve, and the first contact arm and the second contact arm contact two adjacent sleeves respectively.

9. The backplane connector according to claim 8, wherein: The first ends of the first contact arm and the second contact arm are connected to the torsion section, and the first contact arm and the second contact arm are bent from the first end in a direction away from each other to form a bending portion, and then extend toward the end and gradually approach each other along the extension direction. The distance between the first contact arm and the second contact arm at the end is smaller than the distance at the bending portion.

10. The backplane connector according to claim 9, wherein: The ends of the first contact arm and the second contact arm are bent outward to form a plug-in guide portion; the distance between the first contact arm and the second contact arm at the closest point between the plug-in guide portions is smaller than the distance at the bent portion.

11. The backplane connector according to any one of claims 8 to 10, characterized in that: A connecting section is provided between the first contact arm, the second contact arm and the torsion section. The connecting section is located in a different plane from the ground transmission section through the torsion section. The first contact arm and the second contact arm are located on opposite sides of the connecting section.

12. The backplane connector according to any one of claims 8 to 10, characterized in that ,, the torsion angle of the torsion section is 44°-146°.

13. The backplane connector according to any one of claims 8 to 10, characterized in that: The first contact arm and the second contact arm are arranged in a relatively offset manner.

14. The backplane connector according to any one of claims 8 to 10, characterized in that: The shell includes a first surface and a second surface arranged opposite to each other, the first surface is provided with a multi-row plug-in structure, the plug-in structure is used to plug the daughter card structure, the second surface is provided with a multi-row accommodating structure, the accommodating structure corresponds to the plug-in structure and is connected to the plug-in structure, the docking structure corresponds to the accommodating structure, the plug-in structure includes a first plug-in cavity for accommodating the signal contact and a second plug-in cavity for accommodating the ground contact, the accommodating structure includes an accommodating groove, the accommodating groove is connected to the second plug-in cavity, the sleeve is located in the accommodating groove and is surrounded by the first plug-in cavity.

15. The backplane connector according to claim 14, wherein: The accommodating structure further includes a signal hole and an isolating member, wherein the isolating member surrounds the signal hole, and the first contact arm and the second contact arm are located in the second plug-in cavity and the accommodating groove and abut against the inner wall of the sleeve.

16. The backplane connector according to claim 8, wherein: The differential signal conductors form a differential signal pair, the signal contact is a duckbill structure, the pin is located in the duckbill structure and abuts against the duckbill structure, and the pin and the signal contact are both located in the sleeve.

17. The backplane connector according to any one of claims 8 to 10, characterized in that: The sleeve enters the accommodating groove and is located in the accommodating groove, the bent portions of the first contact arm and the second contact arm are located at the edges of the two adjacent sleeves, the ends of the first contact arm and the second contact arm respectively extend into the two adjacent sleeves through the plug-in guide portion and abut against the inner wall of the sleeve through the ends, the pin abuts against the signal contact piece, and the sleeve is arranged around the pin and the signal contact piece.

18. The backplane connector according to claim 14, wherein: The accommodating structures in adjacent rows and the docking structures in adjacent rows are arranged in a staggered manner, and the offset of the docking structure is the same as the offset of the accommodating structure, both of which are 0.5mm-3mm.

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