Backboard connector and terminal module and differential pair thereof

Abstract

The utility model relates to the technical field of conductive connecting devices, in particular to a backboard connector and a terminal module and a differential pair thereof. A differential pair of the backboard connector comprises two paired signal terminals, each signal terminal comprises a wiring main body, a contact end and a crimping end, the orientations of the contact ends and the crimping ends are perpendicular to each other, when the two signal terminals are used, one of the contact ends close to a circuit board is a near-side terminal, and the other one of the contact ends far away from the circuit board is a far-side terminal. A bending section is arranged on the wiring main body of the near-side terminal, a corresponding section corresponding to the bending section is arranged on the wiring main body of the far-side terminal, the wiring length of the bending section is larger than that of the corresponding section, and the bending section is used for increasing the signal transmission path of the near-side terminal. The difference of the signal transmission paths of the near-side terminal and the far-side terminal caused by the arrangement form of the bent terminals is reduced, the delay inequality can be improved, and the signal transmission performance can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to conductive connecting device technical field, concretely relates to a backplate connector and its terminal module, differential pair. BACKGROUND

[0002] In modern data communication transmission system, the transmission rate is higher and higher, and high-speed interconnection system is widely used in communication network and data exchange system. As the core bridge of data communication between circuit boards, the performance requirement of high-speed backplane connector is higher and higher.

[0003] The basic structure of the existing backplane connector can be seen from the Chinese invention patent disclosed in the authorized announcement No. CN113571972B, a connector, the connector includes a terminal module, the terminal module includes signal differential pairs and ground terminals arranged alternately, the signal differential pairs include two signal terminals, the middle part of the signal terminal is a signal wire main body, the two ends of the signal wire main body are signal insertion ends and signal crimping ends, the signal insertion end, that is, the contact end, is used for contacting and conducting with the corresponding terminal of the adapter connector, and the signal crimping end is used for crimping to the circuit board.

[0004] The terminal of the above-mentioned backplane connector is a bent terminal, the wire direction of the terminal is not along a straight line, the terminal is bent, and the orientations of the crimping end and the contact end of the terminal are perpendicular to each other. This connector is also called a bent connector, which is suitable for use in scenarios where insertion operation is performed in a direction parallel to the circuit board. However, since the contact ends and the crimping ends of the terminals are flush and the terminals are arranged in a coplanar manner, the lengths of the terminals are different, the terminals closer to the circuit board are shorter, and the terminals farther away from the circuit board are longer. For the differential pair, the difference in length of the two signal terminals causes a difference in signal transmission path, the signal transmission path corresponding to the longer terminal is longer, the signal transmission is slower, the signal transmission path corresponding to the shorter terminal is shorter, the signal transmission is faster, thereby causing a time delay difference in the signal transmission of the two signal terminals of the differential pair, affecting the signal transmission performance, especially for the differential pair closest to the circuit board, the lengths of the two signal terminals are relatively short, and the time delay difference caused by the length difference is more obvious. SUMMARY

[0005] The utility model aims at providing a differential pair of backplane connector to solve the problem that the two signal terminals of the differential pair of the current backplane connector have a large difference in signal transmission path length due to different lengths, thereby forming a large time delay difference and affecting the signal transmission performance. The utility model also aims at providing a backplane connector and its terminal module to solve the above-mentioned problem.

[0006] The technical scheme of the differential pair of the backplane connector of the utility model is as follows:

[0007] The utility model provides a differential pair of backplane connector, including two signal terminals of pair, and signal terminal includes the wire main body and the contact end and the crimping end, the direction of contact end and crimping end is perpendicular to each other, one of two signal terminals is near side terminal when using contact end close to circuit board, and the other is far side terminal when contact end is far away from circuit board, and the wire main body of near side terminal is equipped with the bending section, and the wire main body of far side terminal is equipped with the corresponding section corresponding to bending section, and the wire length of bending section is greater than the wire length of corresponding section to reduce the time delay difference of far side terminal and near side terminal when signal transmission.

[0008] Further, the bending section includes two inclined sections obliquely arranged relative to the corresponding section.

[0009] Further, the bending section further includes a straight section between the two inclined sections, the straight section is arranged parallel to the corresponding section, and the two ends of the inclined sections close to each other are respectively connected to the two ends of the straight section.

[0010] Further, the middle part of the bending section in the wire length direction is farther from the corresponding section than the two ends.

[0011] The differential pair of the backplane connector has the following advantages: based on the differential pair of the backplane connector in the prior art, the contact end of the near side terminal of the differential pair is closer to the circuit board than the contact end of the far side terminal when in use. By arranging the bending section on the wire main body of the near side terminal and making the wire length of the bending section greater than the wire length of the corresponding section on the far side terminal, the length of the signal transmission path on the bending section is greater than the length of the signal transmission path on the corresponding section. The signal transmission path of the near side terminal is increased by the bending section, the difference in the signal transmission path between the near side terminal and the far side terminal caused by the arrangement of the bending terminal is reduced, the time delay difference is improved, and the signal transmission performance is ensured.

[0012] The terminal module of the backplane connector has the following advantages:

[0013] The terminal module of the backplane connector has the following advantages:

[0014] Further, the bending section comprises two inclined sections arranged obliquely relative to the corresponding section, and the two inclined sections are arranged at an angle.

[0015] Further, the bending section further comprises a straight section between the two inclined sections, the straight section is arranged parallel to the corresponding section, and the two ends of the two inclined sections are connected to the two ends of the straight section respectively.

[0016] Further, the middle part of the bending section in the length direction of the wire is farther away from the corresponding section than the two ends.

[0017] Further, the differential pair of the backplane connector is arranged in the insulator of the terminal module, the insulator is provided with an exposure port for exposing the signal terminal, and the area of the distal terminal exposed from the insulator is greater than the area of the proximal terminal exposed from the insulator.

[0018] Further, the bending section of the proximal terminal is completely located in the insulator.

[0019] Further, the differential pair of the backplane connector provided with the bending section is a first differential pair, the terminal module of the backplane connector comprises a plurality of differential pairs, and the first differential pair is the differential pair closest to the circuit board in use.

[0020] Further, each ground terminal of the terminal module is located on the same side of the first differential pair.

[0021] The terminal module of the backplane connector has the following advantages: the proximal terminal of the differential pair is closer to the circuit board in use than the distal terminal, the bending section is arranged on the wire body of the proximal terminal, the wire length of the bending section is greater than the wire length of the corresponding section of the distal terminal, the length of the signal transmission path on the bending section is greater than the length of the signal transmission path on the corresponding section, the signal transmission path of the proximal terminal is increased by the bending section, the difference between the signal transmission paths of the proximal terminal and the distal terminal caused by the arrangement form of the bending terminal is reduced, the time delay difference is improved, and the signal transmission performance is ensured.

[0022] The technical scheme of the backplane connector comprises the following steps:

[0023] A backplane connector includes a terminal module of the backplane connector, the terminal module of the backplane connector includes a differential pair of the backplane connector, the differential pair of the backplane connector includes two signal terminals in a pair, the signal terminal includes a wire body and a contact end and a crimp end, the contact end and the crimp end are perpendicular to each other, one of the two signal terminals has a contact end close to a circuit board in use as a near-side terminal, and the other has a contact end away from the circuit board as a far-side terminal, the wire body of the near-side terminal is provided with a bending segment, and the wire body of the far-side terminal is provided with a corresponding segment corresponding to the bending segment, and the wire length of the bending segment is greater than the wire length of the corresponding segment to reduce the time delay difference between the far-side terminal and the near-side terminal in signal transmission.

[0024] Further, the bending segment includes two inclined segments obliquely arranged relative to the corresponding segment, and the two inclined segments are arranged at an angle.

[0025] Further, the bending segment further includes a flat segment between the two inclined segments, the flat segment is arranged parallel to the corresponding segment, and the two ends of the two inclined segments are respectively connected to the two ends of the flat segment.

[0026] Further, the distance between the middle of the wire length direction of the bending segment and the corresponding segment is greater than the distance between the two ends and the corresponding segment.

[0027] Further, the differential pair of the backplane connector is arranged in an insulator of the terminal module, the insulator is provided with an exposure port for the signal terminal to expose, and the area of the far-side terminal exposed from the insulator is greater than the area of the near-side terminal exposed from the insulator.

[0028] Further, the bending segment of the near-side terminal is completely located in the insulator.

[0029] Further, the differential pair of the backplane connector provided with the bending segment is a first differential pair, the terminal module of the backplane connector includes a plurality of differential pairs, and the first differential pair is the differential pair with the contact end closest to the circuit board in use.

[0030] Further, each ground terminal of the terminal module is located on the same side of the first differential pair.

[0031] The backboard connector of the utility model has the advantages that: on the basis of the differential pair of the backboard connector in the prior art, the contact end of the proximal terminal of the differential pair is closer to the circuit board when used, a bending section is arranged on the wiring body of the proximal terminal, the wiring length of the bending section is greater than the wiring length of the corresponding section on the distal terminal, correspondingly, the length of the signal transmission path on the bending section is greater than the length of the signal transmission path on the corresponding section, the signal transmission path of the proximal terminal is increased by the bending section, the difference in the signal transmission path between the proximal terminal and the distal terminal caused by the arrangement form of the bending terminal is reduced, the time delay difference is improved, and the signal transmission performance is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structure schematic view of the embodiment of the backboard connector of the utility model;

[0033] Figure 2 It is a schematic view of the backboard connector in the utility model without the shell; Figure 1

[0034] Figure 3 It is a front view schematic view of the terminal module in the utility model; Figure 2

[0035] Figure 4 It is a back view schematic view of the terminal module in the utility model; Figure 2

[0036] Figure 5 It is a three-dimensional schematic view of the terminal module in the utility model without the second shielding sheet; Figure 2

[0037] Figure 6 It is a front view schematic view of the terminal module in the utility model without the two side shielding sheets; Figure 2

[0038] Figure 7 It is a three-dimensional schematic view of the terminal of the terminal module in the utility model; Figure 2

[0039] Figure 8 It is a front view schematic view of the terminal of the terminal module in the utility model; Figure 2

[0040] Figure 9 It is a three-dimensional schematic view of the common ground shell in the utility model; Figure 2

[0041] Figure 10 It is a schematic view of the common ground shell and the ground contact installation structure in the utility model. Figure 2

[0042] In the drawing: 100, shell; 200, terminal module; 300, common ground shell; 400, ground contact;​​​​​​​​​

[0043] 21, first shielding sheet; 22, second shielding sheet; 23, ground terminal; 24, signal terminal; 25, insulator; 211, shielding sheet bayonet; 212, open slot; 251, insulating holding portion; 252, window; 241, wiring main body; 242, contact end; 243, crimping end; 244, terminal bending portion; 2441, main body connecting section; 2442, first transition section; 2443, second transition section; 2444, contact connecting section;

[0044] 240, first differential pair; 2401, proximal terminal; 2402, distal terminal; 2403, bending section; 2404, corresponding section;

[0045] 301, ground mounting hole; 311, first clamping groove; 312, second clamping groove; 321, avoidance hole. DETAILED DESCRIPTION

[0046] The backboard connector of the utility model sets up bending section on the wiring main body of the proximal terminal to increase the signal transmission path of the proximal terminal, reduces the difference of the signal transmission path of the proximal terminal and the distal terminal caused by the arrangement form of the bending terminal, can improve the time delay difference, is favorable to guarantee the signal transmission performance.

[0047] Embodiments of the backboard connector of the utility model:

[0048] As shown in Figure 1 、 Figure 2 , the backboard connector comprises a shell 100, a terminal module 200, a common ground shell 300 and a ground contact 400. The terminal module 200 is arranged in parallel, and each terminal module 200 is fixedly installed in the shell 100. In combination with Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 , the terminal module 200 comprises an insulator 25, a terminal fixed in the insulator 25 and two shielding sheets fixed on both sides of the thickness direction of the insulator 25 respectively, the terminal and the shielding sheet are metal pieces, the two shielding sheets are a first shielding sheet 21 and a second shielding sheet 22 respectively, the terminal of the terminal module 200 has a signal terminal 24 and a ground terminal 23, the signal terminal 24 is arranged in pairs and constitutes a differential pair, a plurality of differential pairs are arranged side by side in the same terminal module 200, and the ground terminal 23 is arranged between any two differential pairs.

[0049] The terminals of the terminal module 200 are wire terminals, one end of the signal terminal 24 constitutes a contact end 242 thereof for cooperating with a corresponding terminal of an adapter connector, the other end constitutes a crimp end 243 thereof for being crimped on a corresponding circuit board, the crimp end 243 is a fish-eye structure. The signal terminal 24 comprises a wire main body 241 between the contact end 242 and the crimp end 243, the backplane connector is a bend connector, the terminals of the terminal module 200 are bend terminals, the terminals of the same terminal module 200 are formed on the same material strip, the contact end 242 and the crimp end 243 of the signal terminal 24 are perpendicular to each other in orientation, the terminal ends of the contact ends 242 of the terminals are flush, the terminal ends of the crimp ends 243 are flush, the wire main body 241 is bent to change the direction of the crimp end 243 to the contact end 242.

[0050] For the arrangement of the terminals on the terminal module 200, mainly refer to Figure 6 、 Figure 7 、 Figure 8 The terminal module 200 in the embodiment is provided with four differential pairs, which are a first differential pair 240 and three other differential pairs, the three other differential pairs are sequentially distributed in a direction away from the first differential pair 240, the side surfaces of the wire main bodies 241 of the signal terminals 24 of each differential pair are on the same plane, the lengths of the differential pairs are different, the differential pair whose contact end 242 is farther away from the circuit board to which the corresponding terminal is crimped has a longer length, wherein the first differential pair 240 is closest to the circuit board to which the connector is crimped, and being close to the circuit board means being close to the side surface of the connector on which the crimp ends 243 are arranged, the length of the first differential pair 240 is relatively short, accordingly, the two signal terminals of the first differential pair 240 are relatively short in length compared with the signal terminals of the three other differential pairs.

[0051] The one of the two signal terminals of the first differential pair 240 which is close to the circuit board at the time of use is a proximal terminal 2401, and the other which is away from the circuit board is a distal terminal 2402. The proximal terminal and the distal terminal of the conventional differential pair extend in parallel, and the wire length of the distal terminal is greater than that of the proximal terminal. In order to improve the time delay difference problem existing in the two signal terminals of the conventional differential pair, the wire main body of the proximal terminal 2401 is provided with a bending segment 2403, and the wire main body of the distal terminal 2401 is provided with a corresponding segment 2404 corresponding to the bending segment 2403. The corresponding segment 2404 is the part corresponding to the wire length of the bending segment 2403 in the wire length direction of the distal terminal 2402. The wire length is the length of the terminal winding extension. The corresponding segment 2404 and the bending segment 2403 are opposite in the interval direction of the two signal terminals of the differential pair. The wire length of the bending segment 2403 is greater than that of the corresponding segment 2403, so that the length of the signal transmission path on the bending segment 2403 is greater than that on the corresponding segment 2404. The bending segment 2403 increases the signal transmission path of the proximal terminal 2401, reduces the difference between the signal transmission paths of the proximal terminal 2401 and the distal terminal 2402 caused by the arrangement form of the bending terminal, improves the time delay difference, and is beneficial to ensuring the signal transmission performance.

[0052] The bending segment 2403 includes two inclined segments which are inclinedly arranged relative to the corresponding segment 2404. The two inclined segments are arranged at an angle. The inclined segments are used for changing direction, which facilitates the processing and forming on the material belt while increasing the length of the bending segment 2403 relative to the corresponding segment 2404.

[0053] The middle of the wire length direction of the bending segment 2403 is farther from the corresponding segment 2404 than the two ends, and the straight segment of the bending segment 2403 constitutes the middle, avoiding the bending segment 2403 being too close to the corresponding segment 2404, and facilitating processing and forming. Each differential pair is arranged in the insulator 25 of the terminal module 200, and the insulator 25 is provided with a revealing opening for the signal terminal 24 to be exposed, which is a hollow structure. The two signal terminals 24 of each differential pair have a part exposed from the corresponding revealing opening, that is, a part of the signal terminal is exposed in the air at the revealing opening, and this part is exposed by using the revealing opening instead of extending from the revealing opening. The area of the distal terminal 2402 of the first differential pair 240 exposed from the insulator 25 is greater than the area of the proximal terminal 2401 exposed from the insulator 25, the transmission medium is changed, and the time delay difference can be improved. The bending segment 2403 of the proximal terminal 2401 is completely located in the insulator 25, and the corresponding segment 2404 of the corresponding distal terminal 2402 has a part exposed from the corresponding revealing opening, so as to improve the time delay difference by using different transmission media.

[0054] The first differential pair 240 provided with the bending segment 2403 is the differential pair closest to the circuit board at the contact end when in use, and the time delay difference of the remaining differential pairs is not obvious, so the bending segment is not provided. Each ground terminal 23 of the same terminal module 200 is located on the same side of the first differential pair 240, that is, each ground terminal 23 is located on the side of the distal terminal 2402 of the first differential pair 240 away from the proximal terminal 2401, and the side of the proximal terminal 2401 away from the distal terminal 2402 is not provided with a ground terminal, facilitating the processing and forming of the proximal terminal 2401.

[0055] The one end of the wire body 241 is connected with the crimping end 243, and the other end is connected with the contact end 242 through the terminal bending part 244. The crimping end 243 and the wire body 241 are in the same plane, and the contact end 242 is perpendicular to the wire body 241. The thickness direction of each part of the terminal, that is, the material thickness direction, corresponds to the thickness direction of the material belt used for forming the terminal. The parallel direction of the contact ends 242 of the two signal terminals 24 of the differential pair is perpendicular to the spacing direction of the crimping end 243. The side-by-side direction of each differential pair of the same terminal module 200 is perpendicular to the parallel direction of the contact ends 242 of the two signal terminals 24 of the same differential pair, so that the orthogonal connector cooperates with the mating connector to interconnect the two circuit boards distributed orthogonally.

[0056] The terminal of the terminal module 200 is fixed in the insulator 25 by injection molding, the insulator 25 is provided with an insulating retaining portion 251, the insulating retaining portion 251 wraps the terminal bending portion 244, the bending position of the signal terminal 24 is wrapped by the insulator 25, the terminal bending portion 244 is fixed, the bending position of the signal terminal 24 can be kept in the set bending state after the signal terminal 24 is fixed together with the insulator 25 by molding, is not easily affected by the rebound, is beneficial to guarantee the position degree of the contact end 242 of the signal terminal 24, and guarantees that the terminal contacts reliably after the connector is plugged.

[0057] The insulating retaining portion 251 is provided with a window 252, the window 252 constitutes an exposed outlet, the terminal bending portion 244 has a part exposed from the window 252, the window 252 can change the high-frequency signal transmission medium, optimize electromagnetic interference, reduce crosstalk, and improve transmission performance. The terminal bending portion 244 includes a main body connecting segment 2441, a first transition segment 2442, a second transition segment 2443, and a contact connecting segment 2444, the main body connecting segment 2441 is connected with the wire main body 241 and is consistent in thickness direction, the first transition segment 2442 and the second transition segment 2443 are arranged at an angle, the first transition segment 2442 is connected with the main body connecting segment 2441 and is perpendicular to the main body connecting segment 2441, one end of the second transition segment 2443 is connected with the first transition segment 2442, and the other end is connected with the contact connecting segment 2444, the contact connecting segment 2444 is connected with the contact end 242 and is consistent in thickness direction, the first transition segment 2442 is parallel to the contact end 242, and the insulating retaining portion 251 wraps the contact connecting segment 2444 and the main body connecting segment 2441. The part of the terminal bending portion 244 exposed from the window 252 is located in the main body connecting segment 2441, the main body connecting segment 2441 connected with the wire main body 241 extends straight, the straight segment is exposed from the window 252, the opening area of the window 252 is controlled, and the window 252 is molded.

[0058] The two signal terminals 24 of the differential pair have different extension lengths, and the area of the part of the longer signal terminal 24 exposed from the window 252 is greater than the area of the part of the shorter signal terminal 24 exposed from the window 252, which can improve the time delay difference of the two signal terminals 24 of the differential pair. Each differential pair corresponds to an insulation retaining portion 251, and the terminal bending portion 244 of the two signal terminals 24 of the same differential pair has a part exposed from the window 252, the window 252 penetrates along the thickness direction of the insulator 25, and the main body connecting section 2441 and the wire main body 241 of the terminal bending portion 244 both have a part exposed from the window 252 and a part exposed from the window 252 in the width direction, that is, the parts of the main body connecting section 2441 and the wire main body 241 of the terminal bending portion 244 corresponding to the window 252 are partially located in the insulator 25 in the width direction, which ensures the structural strength. The opening area of the window 252 corresponding to the longer signal terminal 24 is greater than the opening area corresponding to the shorter signal terminal 24, which facilitates the exposure of the signal terminal 24 from the window 252, and the two signal terminals 24 of the same differential pair are exposed from the same window 252, which is simple in structure and convenient to manufacture.

[0059] The first shielding sheet 21 and the second shielding sheet 22 both extend out of the main body portion of the insulator 25 at the end close to the insertion end, and the first shielding sheet 21 and the second shielding sheet 22 extend to the window 252 and cover a part of the window 252, which can shield the window 252 and ensure the shielding effect.

[0060] The end of the insulator 25 close to the contact end 242 is provided with an extension protrusion for extending into the common ground shell 300 of the orthogonal connector, and each differential pair corresponds to an extension protrusion, and the insulation retaining portion 251 is formed by the extension protrusion. The extension protrusion protrudes from the main body portion of the insulator 25 towards the plug end side, which facilitates the installation of the insulation retaining portion 251 into the common ground shell 300, ensures the reliable installation of the terminal module 200, and is beneficial to reducing the size of the connector. The insulation retaining portion 251 can increase the strength of the bending part of the signal terminal 24, effectively improve the needle shrinkage problem caused by the assembly of the terminal module 200 to the common ground shell 300, and even if the terminal module 200 is not well aligned with the common ground shell 300 during installation, the contact end 242 of the signal terminal 24 will not be bent. At the same time, the plastic of the insulation retaining portion 251 plays an isolation role, which can reduce the risk of poor voltage resistance caused by metal chips generated by scratching the common ground shell 300 during assembly of the terminal module 200.

[0061] The terminal bending portions 244 of the two signal terminals 24 of the differential pair are centrally symmetrically arranged, the centers of the terminal bending portions 244 of the two signal terminals 24 of the differential pair, i.e. the centers corresponding to the spacing between the two signal terminals 24, the bending directions of the segments of the terminal bending portions 244 of the two signal terminals 24 are opposite, and the two parts of the insulation retaining portion 251 wrapping the two terminal bending portions 244 of the differential pair are arranged in a staggered manner. The terminal bending portions 244 of the two signal terminals 24 of the differential pair are centrally symmetric about the centers, which can improve the coupling performance of the differential pair at the terminal bending portions 244 while achieving the orthogonal arrangement of the two contact ends 242 of the differential pair relative to the wire main body 241.

[0062] The ground terminal 23 in the insulation body 25 of the terminal module 200 does not have a contact portion for cooperating with the mating connector, and the ground terminal 23 and the signal terminal 24 are both provided with a crimping structure for being crimped to a circuit board, and the ground conduction with the mating connector is achieved by a separately arranged ground contact 400. The ground contact 400 is installed in the common ground housing 300, the ground contact 400 is in contact with the corresponding terminal of the mating connector, and the first shielding sheet 21 of the terminal module 200 is provided with a connection site for connecting with the separately arranged ground contact 400. By connecting the separately arranged ground contact 400 with the first shielding sheet 21 to form ground conduction, the terminal module 200 does not need to be provided with a contact on the ground terminal 23, which is conducive to achieving the symmetric bending of the signal terminal 24 and facilitating the processing and forming of the terminal on the material belt.

[0063] The housing 100 is an insulating shell, and the common ground housing 300 is a conductive shell. The common ground housing 300 is installed in the housing 100, each terminal module 200 forms a ground conduction with the common ground housing 300, the common ground housing 300 is made by electroplating metal on a plastic base, the ground contact 400 is a metal piece, the ground contact 400 is arranged in the common ground housing 300, the common ground housing 300 is provided with a mounting hole for mounting the ground contact 400, and the two ends of the ground contact 400 in the length direction are respectively a plug-in end and a connection end. The plug-in end of the ground contact 400 is used for cooperating with the corresponding terminal of the mating connector, the connection end of the ground contact 400 away from the plug-in end is exposed from the corresponding mounting hole of the common ground housing 300 and connected with the first shielding sheet 21 of the terminal module 200 when the terminal module 200 is installed in the housing 100 to achieve ground conduction. The ground contact 400 has a connection relationship with the common ground housing 300 and the first shielding sheet 21, which is conducive to reliable ground conduction.

[0064] The edge part of the first shielding sheet 21 close to the insertion end of the signal terminal 24 is provided with a shielding sheet socket 211, and the connecting end of the grounding contact 400 is connected and grounded by being clamped into the shielding sheet socket 211. The first shielding sheet 21 is provided with an open slot 212 beside the shielding sheet socket 211, and the open slot 212 can make one side wall of the shielding sheet socket 211 have a deformation ability, and provide a deformation avoidance space for the deformation of the shielding sheet socket 211 part of the first shielding sheet 21 when the connecting end of the corresponding grounding contact 400 is clamped into the shielding sheet socket 211, so as to facilitate the clamping of the corresponding grounding contact 400 into the shielding sheet socket 211 and reduce metal debris.

[0065] The shell 100 is provided with a partition plate to divide the inner cavity of the shell 100 into a mounting space and an insertion space, and the common ground shell 300 is mounted in the mounting space of the shell 100, the insertion end of the grounding contact 400 extends into the insertion space of the shell 100, and the terminal module 200 is mounted in the mounting space of the shell 100 and the contact end 242 of the signal terminal 24 thereof extends into the insertion space to be plugged and matched with the adapter connector.

[0066] In combination Figure 9 , Figure 10 , the common ground shell 300 is provided with a grounding mounting hole 301, a first clamping slot 311, a second clamping slot 312, and an avoidance hole 321, the grounding mounting hole 301 constitutes a mounting hole for mounting the grounding contact 400, the grounding mounting holes 301 are arranged in an array, and correspondingly, the grounding contacts 400 are arranged in an array, one row of grounding contacts 400 corresponds to one terminal module 200, and the contact ends 242 of any two differential pairs of the same terminal module 200 are both provided with a grounding contact 400. The avoidance holes 321 are arranged in an array, the number of the same row of avoidance holes 321 is consistent with the number of differential pairs of the same terminal module 200, the avoidance holes 321 are used for the insulation holding part 251 of the insulator 25 of the terminal module 200 to be loaded into, and the contact ends 242 of the differential pairs of the terminal module 200 can extend into the insertion space through the partition plate of the shell 100. The first clamping slot 311 and the second clamping slot 312 are arranged in groups, one group corresponds to one terminal module 200, the first clamping slot 311 is used for clamping the first shielding sheet 21, the second clamping slot 312 is used for clamping the second shielding sheet 22, one end of the shielding sheet extending out of the main body part of the insulator 25 is clamped into the corresponding clamping slot, and a bulge is arranged on the part clamped into the clamping slot of the shielding sheet, so as to facilitate the grounding conduction between the terminal module 200 and the common ground shell 300.

[0067] The thickness direction of the grounding contact 400 is perpendicular to the thickness direction of the grounding terminal 23 and the shielding sheet, and is consistent with the thickness direction of the contact end 242 of the signal terminal 24, which is adapted to the arrangement form of the orthogonal connector. The orthogonal connector is a male connector, the mating connector is a female connector, the contact end 242 of the signal terminal 24 is a pin structure, and the grounding contact 400 is a grounding pin, and the insertion end of the grounding contact 400 is a pin structure, and the grounding pin is used in contact with the grounding spring sheet structure of the mating connector.

[0068] Both sides of the grounding contact 400 in the width direction are provided with interference convex parts to interfere with the grounding mounting hole 301 on the common ground shell 300. The side of the grounding contact 400 in the thickness direction is provided with a righting bump, which is used to abut the hole wall of the grounding mounting hole 301 to avoid the grounding contact 400 from being skewed in the grounding mounting hole 301. The end opening of the grounding mounting hole 301 towards the terminal module 200 constitutes a mounting opening for the grounding contact 400 to be mounted into the grounding mounting hole 301, and when mounted in place, the limiting shoulder of the grounding contact 400 is blocked with the opening of the mounting opening to ensure the installation position of the grounding contact 400.

[0069] In other embodiments, the bending segment can also be an arc segment, and the bending segment extends along an arc line.

[0070] In other embodiments, the bending segment can also not have a straight segment, and the bending segment is a "V" segment, and the two inclined segments of the bending segment are directly connected.

[0071] In other embodiments, the bending segment can also be a wave-shaped structure.

[0072] In other embodiments, when the space permits, the distance between the middle of the bending segment in the length direction and the corresponding segment can also be greater than the distance between the two ends and the corresponding segment.

[0073] In other embodiments, the proximal terminals of all the differential pairs can also be provided with the bending segment.

[0074] In other embodiments, when the space permits, the grounding terminals can also be arranged on both sides of the first differential pair.

[0075] Embodiment of the terminal module of the backboard connector of the utility model:

[0076] The terminal module of the backboard connector in the embodiment is the same as the terminal module in the embodiment of the backboard connector described above, and details are not repeated here.

[0077] Embodiment of the differential pair of the backboard connector of the utility model:

[0078] The differential pair of the backplane connector in the embodiment is the same as the first path differential pair in the above-described embodiment of the backplane connector, and will not be described herein again.

[0079] Finally, it needs to be explained that the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified without paying creative labor, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A differential pair of backplane connectors, characterized by, The signal terminal includes a wire main body (241) and a contact end (242) and a crimping end (243), the contact end and the crimping end are perpendicular to each other, one of the two signal terminals (24) is a near side terminal (2401) with the contact end (242) close to the circuit board, and the other is a far side terminal (2402) with the contact end (242) away from the circuit board, the wire main body (241) of the near side terminal (2401) is provided with a bending section (2403), and the wire main body (241) of the far side terminal (2402) is provided with a corresponding section (2404) corresponding to the bending section (2403), and the wire length of the bending section (2403) is greater than that of the corresponding section (2404) to reduce the time delay difference between the far side terminal and the near side terminal during signal transmission.

2. The differential pair of backplane connectors of claim 1, wherein, The bending section (2403) includes two inclined sections inclined relative to the corresponding section (2404), and the two inclined sections are arranged at an angle.

3. The differential pair of backplane connectors of claim 2, wherein, The bending section (2403) further includes a flat section between the two inclined sections, the flat section is arranged parallel to the corresponding section (2404), and the two ends of the two inclined sections are respectively connected to the two ends of the flat section.

4. The differential pair of a backplane connector according to claim 1 or 2 or 3, characterized in that, The distance between the middle of the wire length direction of the bending section (2403) and the corresponding section (2404) is greater than the distance between the two ends and the corresponding section (2404).

5. A terminal module of a backplane connector, characterized by, The differential pair of the backplane connector includes the backplane connector of any one of claims 1-4.

6. The terminal module of the backplane connector according to claim 5, characterized in that, The differential pair of the backplane connector is arranged in an insulator (25) of a terminal module (200), the insulator (25) is provided with an exposure port for the signal terminal (24) to expose, and the area of the far side terminal (2402) exposed from the insulator (25) is greater than the area of the near side terminal (2401) exposed from the insulator (25).

7. The terminal module of the backplane connector according to claim 6, characterized in that, The bending section (2403) of the near side terminal (2401) is completely located in the insulator (25).

8. The terminal module of claim 5 or 6 or 7, wherein The differential pair of the backplane connector provided with the bending section (2403) is a first differential pair (240), the terminal module (200) of the backplane connector includes a plurality of differential pairs, and the first differential pair is the differential pair with the contact end (242) closest to the circuit board.

9. The terminal module of the backplane connector according to claim 8, characterized in that, Each ground terminal (23) of the terminal module (200) is located on the same side of the first differential pair (240).

10. A backplane connector characterized by, The terminal module of the backplane connector includes the backplane connector of any one of claims 5-9.

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