Terminal module and backboard connector

Abstract

A terminal module comprises a plurality of conductive terminals, an insulator and a metal shielding surrounding piece. The conductive terminal comprises a contact part. And the insulator is sleeved on the contact part. And the metal shielding surrounding piece is sleeved on the insulator. The metal shielding surrounding piece comprises an inner cavity, and at least part of the insulator is contained in the inner cavity. The metal shielding surrounding piece is provided with at least one protruding block part which protrudes towards the inner cavity and is exposed in the inner cavity, and the protruding block part is configured to adjust the impedance of the signal terminal pair. The utility model also discloses a backboard connector with the terminal module group. Compared with the prior art, the bump part of the utility model can suppress the impedance of the signal terminal, thereby playing a role in adjusting the impedance.

Description

Technical Field

[0001] The utility model relates to a terminal module and a backplane connector, belonging to the technical field of connectors. Background Art

[0002] Existing backplane connectors generally include a housing and a plurality of terminal modules mounted on the housing. Each terminal module includes an insulating frame, a plurality of conductive terminals embedded in the insulating frame, and a metal shielding sheet mounted on at least one side of the insulating frame. The conductive terminals generally include a plurality of groups of signal terminal pairs and grounding terminals located on both sides of each group of signal terminal pairs.

[0003] Each group of signal terminal pairs generally includes a first signal terminal and a second signal terminal. However, how to adjust the impedance of the first signal terminal and the second signal terminal is crucial for improving the quality of signal transmission. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a terminal module and a backplane connector which are beneficial to impedance adjustment.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A terminal module, comprising:

[0006] A plurality of conductive terminals, each conductive terminal including a contact portion; the plurality of conductive terminals include a first signal terminal and a second signal terminal, and the first signal terminal and the second signal terminal form a signal terminal pair;

[0007] An insulator sleeved on the contact portions of the first signal terminal and the second signal terminal; and

[0008] A metal shielding surround sleeved on the insulator; the metal shielding surround includes a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall is opposite to the third side wall, and the second side wall is opposite to the fourth side wall; the metal shielding surround includes an inner cavity formed by the first side wall, the second side wall, the third side wall and the fourth side wall, and at least part of the insulator is received in the inner cavity;

[0009] The metal shielding surround is provided with at least one convex block portion protruding into the inner cavity and exposed in the inner cavity, and the convex block portion is configured to adjust the impedance of the signal terminal pair.

[0010] As a further improved technical scheme of the utility model, the contact portion extends along a first direction, and the convex block portion is arranged at an interval with the contact portion in the first direction and does not overlap in the first direction.

[0011] As a further improved technical solution of the present utility model, the bump portion includes at least one first bump portion stamped from the first side wall into the inner cavity body and at least one second bump portion stamped from the third side wall into the inner cavity body.

[0012] As a further improved technical solution of the present utility model, there are two first bump portions which are arranged at intervals along the second direction;

[0013] There are two second bump portions which are arranged at intervals along the second direction;

[0014] The second direction is perpendicular to the first direction.

[0015] As a further improved technical solution of the present utility model, the insulator includes a first side surface, a second side surface, a third side surface and a fourth side surface, wherein the first side surface and the third side surface face away from each other, and the second side surface and the fourth side surface face away from each other;

[0016] The first side wall, the second side wall, the third side wall and the fourth side wall respectively cover the first side surface, the second side surface, the third side surface and the fourth side surface;

[0017] The second side surface is provided with a first limiting groove, and the fourth side surface is provided with a second limiting groove; the second side wall is provided with a first convex bump stamped inward, and the fourth side wall is provided with a second convex bump stamped inward; the first convex bump is clamped in the first limiting groove, the second convex bump is clamped in the second limiting groove, and the first convex bump and the second convex bump are blocked by the insulator and not exposed in the inner cavity body.

[0018] As a further improved technical solution of the present utility model, the insulator is provided with an end surface, a terminal receiving hole penetrating through the end surface, a first extending bump protruding from the end surface and located on one side of the insulator, and a second extending bump protruding from the end surface and located on the other side of the insulator;

[0019] The contact portions of the first signal terminal and the second signal terminal are received in the terminal receiving hole;

[0020] The first extending bump is provided with a first mating surface, the second extending bump is provided with a second mating surface, the first limiting groove is arranged on the first extending bump and penetrates through the first mating surface, and the second limiting groove is arranged on the second extending bump and penetrates through the second mating surface.

[0021] As a further improved technical solution of the present utility model, the ends of the first side wall, the second side wall, the third side wall and the fourth side wall are all provided with deflection portions bent inward, and these deflection portions are spaced apart from each other. The deflection portions are configured to guide and insert the metal shielding surround into the docking backplane connector.

[0022] As a further improved technical solution of the present utility model, each conductive terminal includes a connecting portion connected to the contact portion; the plurality of conductive terminals include a first ground terminal and a second ground terminal, wherein the signal terminal pair is located between the first ground terminal and the second ground terminal;

[0023] The terminal module further includes an insulating bracket, and the connecting portions of the conductive terminals are fixed to the insulating bracket; the insulating bracket is provided with a hollow portion, and the connecting portions of the conductive terminals are partially exposed to the hollow portion;

[0024] The metal shielding surround is in contact with the first ground terminal and / or the second ground terminal.

[0025] As a further improved technical solution of the present utility model, the metal shielding surround includes a first extension piece extending and protruding from the first side wall and a second extension piece extending and protruding from the third side wall. The distance between the first extension piece and the second extension piece is greater than the distance between the first side wall and the third side wall. The first extension piece is vertically in contact with the contact portion of the first ground terminal, and the second extension piece is vertically in contact with the contact portion of the second ground terminal.

[0026] As a further improved technical solution of the present utility model, the terminal module includes a first metal shielding sheet on one side of the insulating bracket and a second metal shielding sheet on the other side of the insulating bracket. The first metal shielding sheet is provided with a first main body portion on one side of the connecting portion of the conductive terminal, and the second metal shielding sheet is provided with a second main body portion on the other opposite side of the connecting portion of the conductive terminal;

[0027] The first main body portion is provided with a first rib protruding toward the first ground terminal and a second rib protruding toward the second ground terminal;

[0028] The second main body portion is provided with a third rib protruding toward the first ground terminal and a fourth rib protruding toward the second ground terminal;

[0029] The first rib and the third rib are respectively in contact with two opposite side surfaces of the connecting portion of the first ground terminal, and the second rib and the fourth rib are respectively in contact with two opposite side surfaces of the connecting portion of the second ground terminal;

[0030] The first main body portion, the second main body portion, the first grounding terminal, and the second grounding terminal enclose a shielding cavity for housing the connection portion of the signal terminal pair.

[0031] As a further improved technical solution of the present utility model, the first metal shielding sheet includes a first extending portion extending from the first main body portion, and the second metal shielding sheet includes a second extending portion extending from the second main body portion;

[0032] The metal shielding surround includes two first slots respectively located on both sides of the first extending sheet and two second slots respectively located on both sides of the second extending sheet;

[0033] The first extending portion is inserted into one first slot and one second slot of the metal shielding surround, and the second extending portion is inserted into the other first slot and the other second slot of the metal shielding surround.

[0034] As a further improved technical solution of the present utility model, the first extending sheet is provided with a first inclined tab formed by stamping, the second extending sheet is provided with a second inclined tab formed by stamping, the first inclined tab abuts against the contact portion of the first grounding terminal, and the second inclined tab abuts against the contact portion of the second grounding terminal.

[0035] As a further improved technical solution of the present utility model, the insulator includes a receiving space located between the first extending bump and the second extending bump, and the bump portion protrudes into the receiving space.

[0036] The present utility model also discloses a backplane connector, which includes:

[0037] A housing, the housing is provided with a receiving space for housing a docking backplane connector and a plurality of terminal receiving slots penetrating through the housing and communicating with the receiving space; and

[0038] A plurality of terminal modules, the terminal modules are installed on the housing, the terminal modules are the aforementioned terminal modules, and the metal shielding surrounds of the terminal modules pass through the corresponding terminal receiving slots to extend into the receiving space.

[0039] Compared with the prior art, at least one bump portion that protrudes into the inner cavity body and is exposed in the inner cavity body is provided on the metal shielding surround of the present utility model, and the bump portion is configured to adjust the impedance of the signal terminal pair. When the signal terminals of the docking backplane connector are separated from the contact portion of the signal terminal pair, the bump portion can suppress the impedance of the signal terminals, thereby playing an impedance adjustment role. Description of the Drawings

[0040] Figure 1 is a perspective view of the backplane connector assembly of the present utility model in an embodiment.

[0041] Figure 2 is Figure 1 a partial perspective exploded view of

[0042] Figure 3 is a perspective view of the backplane connector of the present utility model mounted on the first circuit board and in an embodiment.

[0043] Figure 4 is Figure 3 a partial perspective exploded view of

[0044] Figure 5 is Figure 4 a partial perspective exploded view of the backplane connector in another angle in

[0045] Figure 6 is Figure 3 the front view of the backplane connector in

[0046] Figure 7 is the backplane connector with Figure 5 the housing removed, and the retaining piece is separated out.

[0047] Figure 8 is the side view of a terminal module of the backplane connector.

[0048] Figure 9 is a partial perspective exploded view of the backplane connector in another angle.

[0049] Figure 10 is Figure 9 the enlarged view of the circled part A in

[0050] Figure 11 is the perspective view of a terminal module of the backplane connector.

[0051] Figure 12 is Figure 11 a partial perspective exploded view of

[0052] Figure 13 is the side view of the first metal shielding sheet of the backplane connector.

[0053] Figure 14 is the side view of the second metal shielding sheet of the backplane connector.

[0054] Figure 15 is the side view after removing Figure 11 the first metal shielding sheet and the second metal shielding sheet in , and one metal shielding surround and one insulator are separated out.

[0055] Figure 16 is the three-dimensional sectional view along the Figure 2 K-K line in Figure 2 .

[0056] Figure 17 is Figure 16 the partial enlarged view of the framed part B in Figure 16 .

[0057] Figure 18 is the partial three-dimensional exploded view of the conductive terminals in a terminal module.

[0058] Figure 19 is Figure 18 the front view of Figure 18 .

[0059] Figure 20 is Figure 18 the partial enlarged view of the circled part C in Figure 18 .

[0060] Figure 21 is Figure 19 the partial enlarged view of the circled part D in Figure 19 .

[0061] Figure 22 is Figure 21 the partial enlarged view from another angle.

[0062] Figure 23 is the three-dimensional exploded view of the metal shielding surround and the insulator.

[0063] Figure 24 is Figure 23 the three-dimensional exploded view from another angle.

[0064] Figure 25 is Figure 24 the three-dimensional exploded view from another angle.

[0065] Figure 26 is Figure 24 the top view of Figure 24 .

[0066] Figure 27 is along Figure 3 the sectional schematic view along the E-E line in Figure 3 .

[0067] Figure 28 is along Figure 3 the sectional schematic view along the F-F line in Figure 3 .

[0068] Figure 29 is along Figure 27 the partial enlarged view of the framed part H in Figure 27 .

[0069] Figure 30 is along Figure 28 the partial enlarged view of the framed part I in Figure 28 . Detailed implementation manners

[0070] The exemplary specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description involves the accompanying drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present utility model; on the contrary, they are only examples of devices, products, and / or methods that are consistent with some aspects of the present utility model as recited in the claims of the present utility model.

[0071] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present utility model. The singular forms of "a", "the", or "said" used in the specification and claims of the present utility model are also intended to include the plural forms unless the context clearly indicates otherwise.

[0072] It should be understood that the terms such as "first", "second", and similar terms used in the specification and claims of the present utility model do not represent any order, quantity, or importance, but are only used to distinguish the named features. Similarly, terms such as "one" or "a" do not represent a quantity limitation, but indicate the existence of at least one. Unless otherwise indicated, the terms such as "front", "rear", "upper", "lower", etc. that appear in the present utility model are only for the convenience of description and are not limited to a specific position or a spatial orientation. The expression "including" or "comprising" and similar terms are an open-ended expression, meaning that the elements appearing before "including" or "comprising" cover the elements appearing after "including" or "comprising" and their equivalents, and this does not exclude that the elements appearing before "including" or "comprising" may also include other elements. If "several" appears in the present utility model, it means two or more.

[0073] Please refer to Figure 1 and Figure 2 As shown, the present utility model discloses a backplane connector assembly, which includes a backplane connector 200, a docking backplane connector 100 that cooperates with the backplane connector 200, a first circuit board 302 installed together with the backplane connector 200, and a second circuit board 301 installed together with the docking backplane connector 100. In the illustrated embodiment of the present utility model, the backplane connector 200 and the docking backplane connector 100 are inserted in an orthogonal manner, and the second circuit board 301 is perpendicular to the first circuit board 302.

[0074] Please refer to Figure 3As shown, in the illustrated embodiment of the present utility model, the backplane connector 200 is fixed to the first circuit board 302 by bolts 303. The backplane connector 200 is used to plug into the docking backplane connector 100 to achieve high-speed data transmission.

[0075] Please refer to Figure 4 and Figure 5 As shown, the backplane connector 200 includes a housing 5, a plurality of terminal modules 6 mounted on the housing 5, a holding piece 7 fixed to one side of the plurality of terminal modules 6, and a holding block 8 holding the other side of the plurality of terminal modules 6.

[0076] The housing 5 is made of an insulating material and includes a body portion 51, a wall portion 52 extending from the body portion 51 to one end (e.g., forward), and a frame portion 53 extending from the body portion 51 to the other end (e.g., backward). The body portion 51 is provided with a plurality of terminal receiving grooves 511 penetrating in a first direction A1-A1 (e.g., front-back direction). Those skilled in the art can understand that the first direction A1-A1 is the plugging and unplugging direction of the backplane connector 200 and the docking backplane connector 100. Please refer to Figure 6 As shown, in the illustrated embodiment of the present utility model, the terminal receiving grooves 511 are arranged in multiple rows along a second direction A2-A2 (e.g., left-right direction), and adjacent two rows of terminal receiving grooves 511 are staggered in a third direction A3-A3 (e.g., up-down direction), that is, the terminal receiving grooves 511 at corresponding positions in adjacent two rows of terminal receiving grooves 511 are not aligned along the second direction A2-A2. The wall portion 52 includes a first wall portion 521 and a second wall portion 522 arranged opposite to each other. The first wall portion 521 is provided with a plurality of first slots 5211, and the second wall portion 522 is provided with a plurality of second slots 5221. The mutually aligned first slots 5211 and second slots 5221 and the corresponding terminal receiving grooves 511 are jointly used to receive the terminal modules 6.

[0077] The frame portion 53 includes a first extension wall 531, a second extension wall 532 opposite to the first extension wall 531, a top wall 533 connecting one end of the first extension wall 531 and one end of the second extension wall 532, a bottom wall 534 connecting the other end of the first extension wall 531 and the other end of the second extension wall 532, and a receiving space 535 surrounded by the first extension wall 531, the second extension wall 532, the top wall 533, and the bottom wall 534. The receiving space 535 is used to at least partially receive the docking backplane connector 100. Specifically, in the illustrated embodiment of the present utility model, the first extension wall 531 and the second extension wall 532 are both provided with a plurality of positioning grooves 530 arranged at intervals, thereby improving the docking accuracy when cooperating with the docking backplane connector 100.

[0078] Please refer to Figures 7 to 12 As shown, the terminal module 6 includes an insulating bracket 61, a plurality of conductive terminals 62 embedded in the insulating bracket 61, a first metal shielding sheet 63 fixed to one side of the insulating bracket 61, and a second metal shielding sheet 64 fixed to the other opposite side of the insulating bracket 61.

[0079] Please refer to Figure 12 and Figure 15 As shown, the insulating bracket 61 is generally in the shape of a frame, which includes a rear wall 611, a front wall 612 opposite to the rear wall 611, a top wall 613 connecting one end of the rear wall 611 and one end of the front wall 612, a bottom wall 614 connecting the other end of the rear wall 611 and the other end of the front wall 612, and a plurality of connecting walls 615. The connecting walls 615 can strengthen the structural strength of the frame. The rear wall 611 is provided with a protruding first bump 6111, and the top wall 613 is provided with a protruding second bump 6131. Please refer to Figure 7 As shown, the holding piece 7 is generally in an L shape, and is provided with a first card slot 71 and a second card slot 72 for respectively clamping the first bump 6111 and the second bump 6131. With such a setting, by providing the holding piece 7, each terminal module 6 can be formed into a whole. In the illustrated embodiment of the present utility model, the insulating bracket 61 is provided with a hollow portion 610, and the connecting walls 615 include a first connecting wall 6151 connecting the top wall 613 and the bottom wall 614 and a second connecting wall 6152 connecting the rear wall 611 and the bottom wall 614. The first connecting wall 6151 and the second connecting wall 6152 are exposed in the hollow portion 610. The first connecting wall 6151 and the second connecting wall 6152 are inclined. One end of the first connecting wall 6151 and the second connecting wall 6152 are close to each other, and the other end is spread out from each other to form a radial shape. The connecting wall 615 is further provided with a reinforcing wall 6153 connecting the top wall 613 and the bottom wall 614 and parallel to the front wall 612.

[0080] Please refer to Figure 12 and Figure 15 As shown, the front wall 612 is provided with a plurality of bumps 6121 arranged at intervals and grooves 6122 located between adjacent two bumps 6121. The bumps 6121 are provided with openings 6123 to locally expose the conductive terminals 62, so as to play a role in adjusting impedance.

[0081] The insulating bracket 61 is further provided with a plurality of convex columns 616 for fixing and positioning the first metal shielding sheet 63 and the second metal shielding sheet 64. In the illustrated embodiment of the present utility model, the convex columns 616 are generally cylindrical. In the illustrated embodiment of the present utility model, the convex columns 616 are disposed on the bottom wall 614, the first connecting wall 6151, and the second connecting wall 6152. The first metal shielding sheet 63 and the second metal shielding sheet 64 are respectively located on both sides of the insulating bracket 61. Please refer to Figures 12 to 15 As shown, the convex columns 616 include a first convex column 6161 and a second convex column 6162, wherein the first convex column 6161 and the second convex column 6162 are respectively located on opposite sides of the insulating bracket 61 to be fixed to the first metal shielding sheet 63 and the second metal shielding sheet 64.

[0082] Structurally, please refer to Figures 16 to 22 As shown, in the illustrated embodiment of the present utility model, each set of conductive terminals 62 includes a contact portion 621, a tail portion 622, and a connecting portion 623 located between the contact portion 621 and the tail portion 622. The holding block 8 is provided with a through hole for the tail portion 622 to pass through, facilitating the positioning of each tail portion 622, thereby facilitating the installation of the tail portion 622 on the first circuit board 302. Part of the contact portion 621 is used for electrically connecting with the docking backplane connector 100. In the illustrated embodiment of the present utility model, the connecting portion 623 is zigzag. Specifically, the connecting portion 623 includes a first portion 623a parallel to the contact portion 621, a second portion 623b parallel to the tail portion 622, and a third portion 623c connecting the first portion 623a and the second portion 623b. Please refer to Figure 15 As shown, the first portion 623a extends vertically, the second portion 623b extends horizontally, and the third portion 623c extends obliquely.

[0083] Functionally, each set of conductive terminals 62 includes a plurality of first ground terminals G1, a plurality of second ground terminals G2, and a plurality of signal terminals S. The plurality of signal terminals S include a first signal terminal S1 and a second signal terminal S2. In the illustrated embodiment of the present invention, adjacent first signal terminal S1 and second signal terminal S2 form a signal terminal pair, such as a differential pair, and each signal terminal pair is located between a first ground terminal G1 and a second ground terminal G2, that is, each set of conductive terminals 62 is arranged in the manner of G1-S1-S2-G2. This arrangement is conducive to improving the quality of signal transmission. The signal terminal pair adopts a combination of narrow-side coupling and wide-side coupling. The widths of the first ground terminal G1 and the second ground terminal G2 are respectively greater than the widths of the first signal terminal S1 and the second signal terminal S2 therebetween. This design is conducive to increasing the shielding area, thereby improving the shielding effect.

[0084] In the illustrated embodiment of the present invention, the connecting portion 623 of the conductive terminal 62 is insert-molded into the insulating bracket 61. The connecting portions 623 of the signal terminal pair, the connecting portion 623 of the first ground terminal G1, and the connecting portion 623 of the second ground terminal G2 are all exposed in the same hollow portion 610. The connecting portion 623 of the signal terminal S is provided with a narrowing portion 6230 (please refer to Figure 12 shown) buried in the insulating bracket 61 to adjust the impedance of the signal terminal S and achieve impedance matching.

[0085] Please refer to Figures 18 to 22As shown, in the illustrated embodiment of the present utility model, the signal terminal pair further includes a first extension portion 624 extending from the contact portion 621 of the signal terminal pair to the connection portion 623 of the signal terminal pair, a torsion portion 625 connected to the first extension portion 624, and a second extension portion 626 connected to the torsion portion 625. The first extension portion 624, the torsion portion 625, and the second extension portion 626 extend along the first direction A1-A1 (e.g., the front-rear direction). The first extension portion 624 includes a wide side and a narrow side, and the second extension portion 626 includes a wide side and a narrow side. The first extension portions 624 of the first signal terminal S1 and the second signal terminal S2 are arranged side by side and spaced apart along the second direction A2-A2 (e.g., the left-right direction), and the narrow sides of the first extension portions 624 of the first signal terminal S1 and the second signal terminal S2 are coupled. The second extension portions 626 of the first signal terminal S1 and the second signal terminal S2 are spaced apart along the third direction A3-A3 (e.g., the up-down direction), and the narrow sides of the second extension portions 626 of the first signal terminal S1 and the second signal terminal S2 are coupled. The torsion portion 625 is in a contracted shape compared to the first extension portion 624 and the second extension portion 626 at its two ends, which is beneficial to reducing the resistance when forming the torsion portion 625 by torsion and reducing the manufacturing difficulty. In addition, this arrangement is also beneficial to making the torsion area where the torsion portion 625 is located as short as possible, thereby improving the coupling effect between the first signal terminal S1 and the second signal terminal S2. By providing the torsion portion 625, the second extension portion 626 is substantially perpendicular to the first extension portion 624.

[0086] Specifically, the first extension portion 624 of the first signal terminal S1 includes a first bottom surface 6240a, a first step surface 6241a higher than the first bottom surface 6240a, a first extension surface 6242a lower than the first step surface 6241a, a first inclined portion 6243a connecting the first bottom surface 6240a and the first step surface 6241a, and a first turning portion 6244a connecting the first step surface 6241a and the first extension surface 6242a.

[0087] The first extension portion 624 of the second signal terminal S2 includes a second bottom surface 6240b, a second step surface 6241b higher than the second bottom surface 6240b, a second extension surface 6242b higher than the second step surface 6241b, a second inclined portion 6243b connecting the second bottom surface 6240b and the second step surface 6241b, and a second turning portion 6244b connecting the second step surface 6241b and the second extension surface 6242b.

[0088] In the illustrated embodiment of the present utility model, the contact portion 621, the first bottom surface 6240a, the first inclined portion 6243a, and the first step surface 6241a of the first signal terminal S1 respectively correspond to the contact portion 621, the second bottom surface 6240b, the second inclined portion 6243b, and the second step surface 6241b of the second signal terminal S2, have the same structure, and are arranged in alignment along the second direction A2-A2. The plane P1 where the first step surface 6241a and the second step surface 6241b are located together is between the plane where the first extension surface 6242a is located and the plane where the second extension surface 6242b is located. In other words, the first extension surface 6242a is higher than the first step surface 6241a and the second step surface 6241b upwards, and the second extension surface 6242b is lower than the first step surface 6241a and the second step surface 6241b downwards. Preferably, the first turning portion 6244a, the first extension surface 6242a, the twisting portion 625, and the second extending portion 626 of the first signal terminal S1 and the second turning portion 6244b, the second extension surface 6242b, the twisting portion 625, and the second extending portion 626 of the second signal terminal S2 are symmetrically arranged along the plane P1 where the first step surface 6241a and the second step surface 6241b are located together. With such an arrangement, it is beneficial to make the structures and lengths of the first signal terminal S1 and the second signal terminal S2 closer, thereby facilitating improving impedance matching. The first extension surface 6242a and the second extension surface 6242b both include a wide side and a narrow side, and the wide side of the first extension surface 6242a is coupled with the wide side of the second extension surface 6242b. In the illustrated embodiment of the present utility model, the twisting portion 625 of the first signal terminal S1 and the twisting portion 625 of the second signal terminal S2 have the same twisting angle. With such an arrangement, it is convenient to use a fixture to twist the first signal terminal S1 and the second signal terminal S2 simultaneously, thereby improving production efficiency.

[0089] The first extension part 624 of the first signal terminal S1 and the second extension part 626 of the second signal terminal S2 of the present utility model are perpendicular to each other; the first bottom surface 6240a, the first inclined part 6243a, and the first step surface 6241a of the first signal terminal S1 respectively correspond to the second bottom surface 6240b, the second inclined part 6243b, and the second step surface 6241b of the second signal terminal S2, have the same structure, and are coupled through a narrow side; the second extension part 626 of the first signal terminal S1 corresponds to the second extension part 626 of the second signal terminal S2, has the same structure, and is coupled through a narrow side; the first extension surface 6242a of the first signal terminal S1 near the twisting part 625 and the second extension surface 6242b of the second signal terminal S2 near the twisting part 625 are coupled through a wide side; this arrangement is conducive to making the first signal terminal S1 and the second signal terminal S2 in the signal terminal pair in a tight coupling, so that the insertion loss tends to be stable and the signal transmission quality of the signal terminal pair is improved.

[0090] Please refer to Figure 20 As shown, in the illustrated embodiment of the present utility model, each contact part 621 of the signal terminal S has a split structure. In the same signal terminal pair, the contact parts 621 of the first signal terminal S1 and the second signal terminal S2 are exactly the same, which is conducive to manufacturing and reducing costs. Only the contact part 621 of the first signal terminal S1 will be described below as an example.

[0091] The contact part 621 of the first signal terminal S1 includes a first contact arm 6211, a second contact arm 6212 opposite to the first contact arm 6211, and a first clamping space 6210 located between the first contact arm 6211 and the second contact arm 6212. The first contact arm 6211 and the second contact arm 6212 are bent from two opposite edges of the first signal terminal S1 to the same side (for example, upward). The first contact arm 6211 and the second contact arm 6212 are symmetrically arranged on both sides of the first clamping space 6210.

[0092] When the signal terminal in the shape of a needle of the docking backplane connector 100 is inserted into the first clamping space 6210, the first contact arm 6211 and the second contact arm 6212 can elastically deform to improve the contact reliability.

[0093] The contact portion 621 of the first ground terminal G1 and the second ground terminal G2 is substantially flat. The contact portion 621 of the first ground terminal G1, the contact portion 621 of the second ground terminal G2, and the connection portion 623 with the conductive terminal 62 are coplanar. The contact portion 621 of the first ground terminal G1 and the contact portion 621 of the second ground terminal G2 both extend into the corresponding grooves 6122 to facilitate contact with the first metal shielding sheet 63 and the second metal shielding sheet 64. The contact portion 621 of the signal terminal S extends beyond the bump 6121.

[0094] Please refer to Figure 16 and Figure 17 As shown, in the illustrated embodiment of the present invention, the contact portion 621 and the connection portion 623 of the first ground terminal G1 are both provided with a first wide surface 621a and a first narrow surface 621b perpendicular to the first wide surface 621a. The contact portion 621 and the connection portion 623 of the second ground terminal G2 are both provided with a second wide surface 621c and a second narrow surface 621d perpendicular to the second wide surface 621c. The connection portion 623 of each signal terminal pair is located between the first narrow surface 621b of the first ground terminal G1 and the second narrow surface 621d of the second ground terminal G2 on both sides thereof.

[0095] Please refer to Figure 18 , Figure 19 and Figure 23As shown, each set of terminal modules 6 further includes an insulator 65 sleeved on the contact portion 621 of the signal terminal S and a metal shielding surround 66 sleeved on the insulator 65. In the illustrated embodiment of the present utility model, the contact portion 621 of the signal terminal S is located in the insulator 65, and the insulator 65 does not hold the contact portion 621 of the signal terminal S. In other words, the contact portion 621 of the signal terminal S can be deformed to a certain extent in the insulator 65 when the docking terminal is inserted. Each insulator 65 is provided with an end face 652, a terminal receiving hole 650 penetrating the end face 652, a first extension bump 6591 protruding from the end face 652 and located on one side of the insulator 65, and a second extension bump 6592 protruding from the end face 652 and located on the other side of the insulator 65. The insulator 65 is further provided with a receiving space 6590 between the first extension bump 6591 and the second extension bump 6592. The first extension bump 6591 is provided with a first mating surface 6591a, and the second extension bump 6592 is provided with a second mating surface 6592a. In the illustrated embodiment of the present utility model, the insulator 65 is generally in the shape of a cuboid, which includes a first side surface 653, a second side surface 654, a third side surface 655, and a fourth side surface 656 connected in sequence. The first side surface 653 faces away from the third side surface 655, and the second side surface 654 faces away from the fourth side surface 656. The first extension bump 6591 and the second extension bump 6592 are respectively provided on the second side surface 654 and the fourth side surface 656. The first extension bump 6591 is provided with a first limiting groove 6571 penetrating the first mating surface 6591a, and the second extension bump 6592 is provided with a second limiting groove 6572 penetrating the second mating surface 6592a. The second side surface 654 and the fourth side surface 656 are respectively provided with ribs 658 located behind the first limiting groove 6571 and the second limiting groove 6572.

[0096] The metal shielding surround 66 is generally in the shape of a cuboid. In one embodiment of the present utility model, the metal shielding surround 66 is fixed to the insulator 65 by welding. Of course, in other embodiments, the insulator 65 can also be fixed in the metal shielding surround 66 by other means.

[0097] Please refer to Figure 10 and Figures 23 to 30As shown, the metal shielding surround 66 includes a first sidewall 661, a second sidewall 662, a third sidewall 663, and a fourth sidewall 664 that are sequentially connected. The first sidewall 661 is opposite to the third sidewall 663, and the second sidewall 662 is opposite to the fourth sidewall 664. The metal shielding surround 66 includes an inner cavity 660 surrounded by the first sidewall 661, the second sidewall 662, the third sidewall 663, and the fourth sidewall 664. In the illustrated embodiment of the present utility model, the first sidewall 661, the second sidewall 662, the third sidewall 663, and the fourth sidewall 664 are formed by stamping, bending, and snap-connecting a metal plate. The first sidewall 661, the second sidewall 662, the third sidewall 663, and the fourth sidewall 664 respectively correspond to the first side 653, the second side 654, the third side 655, and the fourth side 656 of the insulator 65. The areas of the first sidewall 661 and the third sidewall 663 are larger than the areas of the second sidewall 662 and the fourth sidewall 664. Deflection portions 665 that are bent inward are provided at the ends of the first sidewall 661, the second sidewall 662, the third sidewall 663, and the fourth sidewall 664. By providing the deflection portions 665, on the one hand, a constriction opening can be formed at the end of the metal shielding surround 66, so that the outer surface 6651 of the deflection portion 665 can guide the terminal module 6 to be installed in the housing 5, and even guide the metal shielding surround 66 to be inserted into the docking backplane connector 100. In addition, a first bump 6671 and a second bump 6672 that are stamped inward are respectively provided on the second sidewall 662 and the fourth sidewall 664. The second sidewall 662 and the fourth sidewall 664 are also respectively provided with raised portions 668 that are stamped outward. The first bump 6671 and the second bump 6672 protrude into the inner cavity 660. When the metal shielding surround 66 and the insulator 65 are assembled, the first bump 6671 and the second bump 6672 respectively extend into the corresponding first limiting groove 6571 and the second limiting groove 6572 to achieve limiting; when the metal shielding surround 66 and the insulator 65 are assembled in place, the ribs 658 on the second side 654 and the fourth side 656 respectively abut against the second sidewall 662 and the fourth sidewall 664 to improve the holding force; in addition, the first bump 6671 and the second bump 6672 respectively abut against the rear ends of the corresponding first limiting groove 6571 and the second limiting groove 6572 to limit the relative position between the metal shielding surround 66 and the insulator 65.In the illustrated embodiment of the present utility model, the first convex hull 6671 and the second convex hull 6672 are clamped in the corresponding first limiting groove 6571 and second limiting groove 6572, and the first convex hull 6671 and the second convex hull 6672 are blocked by the first extension bump 6591 and the second extension bump 6592 of the insulator 65 and are not exposed to the inner cavity 660. When the signal terminals of the docking backplane connector 100 are separated from the contact portion 621 of the signal terminal pair, the signal terminals of the docking backplane connector 100 will pass along the first direction A1-A1 through the first extension bump 6591 and the second extension bump 6592. At this time, the first extension bump 6591 and the second extension bump 6592 can reduce the degree of change in the dielectric constant caused by the air medium around the signal terminal pair, thereby playing an impedance adjustment role. The raised portion 668 is pressed against the inner side wall of the body portion 51 where the terminal receiving groove 511 is formed to increase the holding force. In an embodiment of the present utility model, the raised portion 668 abuts against the blocking wall on the inner side wall to limit the position when the terminal module 6 is installed in the housing 5.

[0098] In the illustrated embodiment of the present utility model, the metal shielding surround 66 further includes a first extension piece 6611 extending and protruding from the first side wall 661 and first slots 6612 located on both sides of the first extension piece 6611. The metal shielding surround 66 further includes a second extension piece 6631 extending and protruding from the third side wall 663 and second slots 6632 located on both sides of the second extension piece 6631. The first extension piece 6611 is in perpendicular contact with the contact portion 621 of the first ground terminal G1 to improve the shielding effect; the second extension piece 6631 is in perpendicular contact with the contact portion 621 of the second ground terminal G2 to improve the shielding effect. In the illustrated embodiment of the present utility model, the first extension piece 6611 and the second extension piece 6631 deflect outward and then extend, so that the distance between the first extension piece 6611 and the second extension piece 6631 on the same metal shielding surround 66 is greater than the distance between the first side wall 661 and the third side wall 663. Please refer to Figure 19As shown, for a set of conductive terminals 62 arranged in the order of G1-S1-S2-G2, the contact portion 621 of the first ground terminal G1 is provided with a first notch 6216 near the signal terminal pair, and the first notch 6216 is used to receive the first extension piece 6611; the contact portion 621 of the second ground terminal G2 is provided with a second notch 6217 near the signal terminal pair, and the second notch 6217 is used to receive the second extension piece 6631. In the illustrated embodiment of the present invention, taking the example that two adjacent pairs of signal terminal pairs share a second ground terminal G2, the second ground terminal G2 is provided with second notches 6217 facing different signal terminal pairs on both sides, and the notches 6217 are used to cooperate with two adjacent metal shielding enclosures 66. The first extension piece 6611 is provided with a first inclined tab 6611a formed by stamping outward (for example, upward), and the second extension piece 6631 is provided with a second inclined tab 6631a formed by stamping outward (for example, downward). In the illustrated embodiment of the present invention, the protruding directions of the first inclined tab 6611a and the second inclined tab 6631a are opposite. After the first extension piece 6611 is inserted into the first notch 6216 of the contact portion 621 of the first ground terminal G1, the first inclined tab 6611a can abut against the contact portion 621 of the first ground terminal G1 to improve the contact reliability. Similarly, after the second extension piece 6631 is inserted into the second notch 6217 of the contact portion 621 of the second ground terminal G2, the second inclined tab 6631a can abut against the contact portion 621 of the second ground terminal G2 to improve the contact reliability.

[0099] The metal shielding enclosure 66 is provided with at least one bump portion 666 protruding into the inner cavity 660 and exposed in the inner cavity 660. The bump portion 666 is configured to adjust the impedance so that the impedance is relatively stable. The bump portion 666 protrudes into the accommodation space 6590. The bump portion 666 and the contact portion 621 are arranged at intervals in the first direction A1-A1 and do not overlap in the first direction A1-A1. In other words, the setting position of the bump portion 666 does not affect the impedance of the contact portion 621.

[0100] In the illustrated embodiment of the present invention, the first side wall 661 is further provided with at least one first bump portion 6613 protruding into the inner cavity 660, and the third side wall 663 is further provided with at least one second bump portion 6633 protruding into the inner cavity 660. The bump portion 666 includes the first bump portion 6613 and the second bump portion 6633.

[0101] In the illustrated embodiment of the present utility model, there are two first bump portions 6613 which are arranged at intervals along the second direction A2 - A2, and there are also two second bump portions 6633 which are arranged at intervals along the second direction A2 - A2. In the illustrated embodiment of the present utility model, the first bump portion 6613 is formed by stamping from the first side wall 661 into the inner cavity body 660, and the first side wall 661 is provided with a first recess 6614 corresponding to the first bump portion 6613 left after stamping to form the first bump portion 6613. Similarly, the third side wall 663 is provided with a second recess 6634 corresponding to the second bump portion 6633 left after stamping to form the second bump portion 6633. In the illustrated embodiment of the present utility model, the first bump portion 6613 and the second bump portion 6633 are symmetrically arranged on both sides (such as the upper and lower sides) of the inner cavity body 660.

[0102] In the illustrated embodiment of the present utility model, the first side wall 661 is provided with a first riveting portion 661a and a second riveting portion 661b, and the first riveting portion 661a and the second riveting portion 661b are provided with a dovetail groove 661a1 and a dovetail protrusion 661b1 which are buckled together. One of the two first bump portions 6613 is arranged on the first riveting portion 661a, and the other of the two first bump portions 6613 is arranged on the second riveting portion 661b. In the illustrated embodiment of the present utility model, the first bump portion 6613 and the second bump portion 6633 are arranged close to the deflection portion 665. In other words, the first bump portion 6613 and the second bump portion 6633 are arranged close to the socket of the inner cavity body 660.

[0103] In the illustrated embodiment of the present utility model, the first metal shielding sheet 63 and the second metal shielding sheet 64 are symmetrically arranged on both sides of the insulating bracket 61. Please refer to Figure 12 and Figure 13As shown, the first metal shielding sheet 63 includes a first main body portion 631, a first extension portion 632 extending from the first main body portion 631, and a first elastic arm 634 and a second elastic arm 635 respectively located on both sides of the first extension portion 632. The first elastic arm 634 and the second elastic arm 635 extend beyond the first main body portion 631 to contact the first ground terminal G1 and the second ground terminal G2 respectively. The first main body portion 631 is located on one side of the connecting portion 623 of the conductive terminal 62. In the illustrated embodiment of the present utility model, the first extension portion 632 and the first main body portion 631 are in different planes, and the first extension portion 632 is farther from the second metal shielding sheet 64 than the first main body portion 631. The first main body portion 631 is provided with a plurality of first mounting holes 6311 that cooperate with a plurality of first convex posts 6161, and the first convex posts 6161 are fixed to the first mounting holes 6311 by welding. The first main body portion 631 is provided with a plurality of ribs 633, and the ribs 633 include a first rib 6331 protruding toward the first ground terminal G1 and a second rib 6332 protruding toward the second ground terminal G2. The first rib 6331 is arranged along the extending direction of the connecting portion 623 of the first ground terminal G1. The second rib 6332 is arranged along the extending direction of the connecting portion 623 of the second ground terminal G2. In the illustrated embodiment of the present utility model, the first rib 6331 and the second rib 6332 are formed by stamping the first main body portion 631. The first rib 6331 and the second rib 6332 protrude toward the second metal shielding sheet 64. The first rib 6331 and the second rib 6332 are arranged discontinuously along the extending direction of the connecting portion 623 of the first ground terminal G1 and the second ground terminal G2 to achieve multi-point contact, so as to improve the contact reliability between the first metal shielding sheet 63 and the first ground terminal G1 and the second ground terminal G2. In the illustrated embodiment of the present utility model, the wall thickness of the first rib 6331, the wall thickness of the second rib 6332, and the wall thickness of the portion of the first main body portion 631 between the first rib 6331 and the second rib 6332 are the same. Specifically, the first rib 6331 and the second rib 6332 each include a first rib portion 633a parallel to the contact portion 621, a second rib portion 633b parallel to the tail portion 622, and a third rib portion 633c connecting the first rib portion 633a and the second rib portion 633b. Please refer to Figure 13As shown, the first rib portion 633a extends vertically, the second rib portion 633b extends horizontally, and the third rib portion 633c extends obliquely. The first rib portion 633a, the second rib portion 633b, and the third rib portion 633c are respectively in contact with the corresponding first part 623a, second part 623b, and third part 623c of the first ground terminal G1 and the second ground terminal G2.

[0104] In addition, the first main body portion 631 is further provided with a plurality of first protruding pieces 6312 extending further downward from its bottom edge and connecting pieces 6313 located between two adjacent first protruding pieces 6312. By providing the first protruding pieces 6312, the shielding length can be extended, and the shielding effect on the signal terminal S can be improved. In the illustrated embodiment of the present utility model, the connecting piece 6313 is formed by stamping from the first main body portion 631. The connecting piece 6313 straddles the slot 6231 to connect one side of the first end portion 6232 and the second end portion 6233 of the same first ground terminal G1, thereby improving the shielding effect. At the same time, the connecting piece 6313 can also connect one side of the first end portion 6232 and the second end portion 6233 of the same second ground terminal G2, thereby improving the shielding effect.

[0105] In the illustrated embodiment of the present utility model, there are a plurality of first extension portions 632 which are spaced apart. The first extension portions 632 are used to be inserted into the first slot 6612 and the second slot 6632 of the metal shielding surround 66 to achieve contact and improve the shielding effect.

[0106] Similarly, please refer to Figure 12 and Figure 14As shown, the second metal shielding piece 64 includes a second main body portion 641, a second extension portion 642 extending from the second main body portion 641, and a third elastic arm 644 and a fourth elastic arm 645 respectively located on both sides of the second extension portion 642. The third elastic arm 644 and the fourth elastic arm 645 extend beyond the second main body portion 641 to contact the first ground terminal G1 and the second ground terminal G2 respectively. The second main body portion 641 is located on the other opposite side of the connecting portion 623 of the conductive terminal 62. In the illustrated embodiment of the present utility model, the second extension portion 642 and the second main body portion 641 are in different planes, wherein the second extension portion 642 is farther from the first metal shielding piece 63 than the second main body portion 641. The second main body portion 641 is provided with a plurality of second mounting holes 6411 that cooperate with a plurality of second convex columns 6162, and the second convex columns 6162 are fixed and positioned in the second mounting holes 6411 by welding. The second main body portion 641 is provided with a plurality of ribs 643, and the ribs 643 include a third rib 6431 protruding toward the first ground terminal G1 and a fourth rib 6432 protruding toward the second ground terminal G2. The third rib 6431 is arranged along the extending direction of the connecting portion 623 of the first ground terminal G1. The fourth rib 6432 is arranged along the extending direction of the connecting portion 623 of the second ground terminal G2. In the illustrated embodiment of the present utility model, the third rib 6431 and the fourth rib 6432 are formed by stamping the second main body portion 641. The third rib 6431 and the fourth rib 6432 protrude toward the first metal shielding piece 63. The third rib 6431 and the fourth rib 6432 are arranged discontinuously along the extending direction of the connecting portion 623 of the first ground terminal G1 and the second ground terminal G2 to achieve multi-point contact, so as to improve the contact reliability between the second metal shielding piece 64 and the first ground terminal G1 and the second ground terminal G2. In the illustrated embodiment of the present utility model, the wall thickness of the third rib 6431, the wall thickness of the fourth rib 6432, and the wall thickness of the portion of the second main body portion 641 between the third rib 6431 and the fourth rib 6432 are the same. Specifically, both the third rib 6431 and the fourth rib 6432 include a fourth rib portion 643a parallel to the contact portion 621, a fifth rib portion 643b parallel to the tail portion 622, and a sixth rib portion 643c connecting the fourth rib portion 643a and the fifth rib portion 643b. Please refer to Figure 14As shown, the fourth rib portion 643a extends vertically, the fifth rib portion 643b extends horizontally, and the sixth rib portion 643c extends obliquely. The fourth rib portion 643a, the fifth rib portion 643b, and the sixth rib portion 643c are respectively in contact with the corresponding first ground terminal G1, the first part 623a, the second part 623b, and the third part 623c of the second ground terminal G2.

[0107] In an embodiment of the present invention, welding is performed on the surfaces of the rib 633 and the rib 643 to weld the rib 633 and the rib 643 to the first ground terminal G1 and the second ground terminal G2. For example, welding is performed on the surfaces of the first rib 6331, the second rib 6332, the third rib 6431, and the fourth rib 6432 to weld the first rib 6331, the second rib 6332, the third rib 6431, and the fourth rib 6432 to the first ground terminal G1 and the second ground terminal G2, where the welding method is at least one of spot welding, laser welding, and ultrasonic welding.

[0108] In addition, the second main body portion 641 is further provided with a plurality of fourth protruding pieces 6412 extending further downward from its bottom edge and connecting pieces 6413 located between adjacent two fourth protruding pieces 6412. By providing the fourth protruding pieces 6412, the shielding length can be extended, and the shielding effect on the signal terminal S can be improved. In the illustrated embodiment of the present invention, the connecting piece 6413 is formed by stamping from the second main body portion 641. The connecting piece 6413 straddles the slot 6231 to connect the other opposite sides of the first end portion 6232 and the second end portion 6233 of the same first ground terminal G1, improving the shielding effect; at the same time, the connecting piece 6413 can also connect the other opposite sides of the first end portion 6232 and the second end portion 6233 of the same second ground terminal G2, improving the shielding effect.

[0109] In the illustrated embodiment of the present invention, there are a plurality of second extension portions 642 arranged at intervals. The second extension portions 642 are used to be inserted into the first slot 6612 and the second slot 6632 of the metal shielding surround 66 to achieve contact and improve the shielding effect.

[0110] Please refer to Figure 17As shown, along the length of the connection portion 623 of the conductive terminal 62, the first rib 6331 of the first metal shielding sheet 63 and the third rib 6431 of the second metal shielding sheet 64 are respectively in contact with two opposite side surfaces of the connection portion 623 of the first ground terminal G1, thereby forming a surrounding shielding cavity 67 around the outer periphery of the connection portion 623 of each signal terminal pair. In the illustrated embodiment of the present utility model, the first rib 6331 and the third rib 6431 are respectively in contact with the first wide surface 621a of the connection portion 623 of the first ground terminal G1, and the second rib 6332 and the fourth rib 6432 are respectively in contact with the second wide surface 621c of the connection portion 623 of the second ground terminal G2. In the illustrated embodiment of the present utility model, the shielding cavity 67 is jointly formed by the first main body portion 631, the second main body portion 641, the first ground terminal G1, and the second ground terminal G2. The connection portion 623 of the first ground terminal G1 is provided with a first tab portion 6234 extending into the shielding cavity 67, and the connection portion 623 of the second ground terminal G2 is provided with a second tab portion 6235 extending into the shielding cavity 67. The connection portion 623 of the signal terminal pair is located between the first tab portion 6234 and the second tab portion 6235. The shielding cavities 67 are multiple and are continuously arranged along the arrangement direction of each group of the conductive terminals 62, wherein two adjacent shielding cavities 67 share a first ground terminal G1 or share a second ground terminal G2. Taking the sharing of the first ground terminal G1 as an example, a part of the shared first ground terminal G1 protrudes into one shielding cavity 67, and another part of the shared first ground terminal G1 protrudes into another shielding cavity 67.

[0111] At a position close to the contact portion 621 of the conductive terminal 62, the first extension portion 632 and the second extension portion 642 are respectively inserted into the first slot 6612 and the second slot 6632 of the metal shielding surround 66; the first extension piece 6611 and the second extension piece 6631 of the metal shielding surround 66 are respectively inserted into the first notch 6216 of the first ground terminal G1 and the second notch 6217 of the second ground terminal G2; at the same time, the first spring arm 634 of the first metal shielding piece 63 and the third spring arm 644 of the second metal shielding piece 64 are clamped on both sides of the contact portion 621 of the first ground terminal G1; the second spring arm 635 of the first metal shielding piece 63 and the fourth spring arm 645 of the second metal shielding piece 64 are clamped on both sides of the contact portion 621 of the second ground terminal G2. Specifically, the first spring arm 634 and the third spring arm 644 clamp the first wide surface 621a of the first ground terminal G1; the second spring arm 635 and the fourth spring arm 645 clamp the second wide surface 621c of the second ground terminal G2. With such an arrangement, the first metal shielding piece 63, the second metal shielding piece 64, the metal shielding surround 66, the first ground terminal G1 and the second ground terminal G2 are all connected in series, thereby increasing the shielding area and improving the shielding effect.

[0112] In the illustrated embodiment of the present utility model, there are multiple terminal modules 6 of the backplane connector 200, and the terminal arrangements of two adjacent terminal modules 6 are staggered from each other. Correspondingly, the shielding cavities 67 of two adjacent terminal modules 6 are also staggered from each other. When the terminal module 6 is installed on the housing 5, the metal shielding surround 66 of the terminal module 6 passes through the corresponding terminal receiving groove 511 to extend into the receiving space 535.

[0113] Compared with the prior art, the metal shielding surround 66 of the present utility model is provided with at least one convex block portion 666 that protrudes into and is exposed in the inner cavity 660, and the convex block portion 666 is configured to adjust the impedance of the signal terminal pair. When the signal terminal of the docking backplane connector 100 separates from the contact portion 621 of the signal terminal pair, the signal terminal of the docking backplane connector 100 will pass through the convex block portion 666 along the first direction A1-A1. At this time, the convex block portion 666 can suppress the impedance of the signal terminal, thereby playing an impedance adjustment role.

[0114] The above embodiments are only used to illustrate the present utility model and do not limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the relevant technical field. Although this specification has described the present utility model in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the relevant technical field can still modify the present utility model or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A terminal module, characterized in that: include: A plurality of conductive terminals, each of which includes a contact portion; the plurality of conductive terminals include a first signal terminal and a second signal terminal, the first signal terminal and the second signal terminal forming a signal terminal pair; an insulator, the insulator being sleeved on the contact portion of the first signal terminal and the contact portion of the second signal terminal; as well as A metal shielding surrounding piece, wherein the metal shielding surrounding piece is sleeved on the insulator; The metal shielding surrounding member includes a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall is opposite to the third side wall, and the second side wall is opposite to the fourth side wall; the metal shielding surrounding member includes an inner cavity surrounded by the first side wall, the second side wall, the third side wall and the fourth side wall, and the insulator is at least partially accommodated in the inner cavity; The metal shield surrounding piece is provided with at least one protruding portion protruding into the inner cavity and exposed in the inner cavity, and the protruding portion is configured to adjust the impedance of the signal terminal pair.

2. The terminal module according to claim 1, characterized in that: The contact portion extends along a first direction, and the bump portion and the contact portion are spaced apart from each other in the first direction and do not overlap each other in the first direction.

3. The terminal module according to claim 2, characterized in that: The convex block portion includes at least one first convex block portion punched into the inner cavity from the first side wall and at least one second convex block portion punched into the inner cavity from the third side wall.

4. The terminal module according to claim 3, characterized in that: There are two first protrusions arranged at intervals along the second direction; There are two second convex blocks arranged at intervals along the second direction; The second direction is perpendicular to the first direction.

5. The terminal module according to claim 1, wherein: The insulator comprises a first side surface, a second side surface, a third side surface and a fourth side surface, wherein the first side surface is opposite to the third side surface, and the second side surface is opposite to the fourth side surface; The first side wall, the second side wall, the third side wall and the fourth side wall respectively cover the first side surface, the second side surface, the third side surface and the fourth side surface; The second side surface is provided with a first limiting groove, and the fourth side surface is provided with a second limiting groove; the second side wall is provided with a first bulge formed by punching inward, and the fourth side wall is provided with a second bulge formed by punching inward; the first bulge is clamped in the first limiting groove, and the second bulge is clamped in the second limiting groove, and the first bulge and the second bulge are blocked by the insulator and are not exposed in the inner cavity.

6. The terminal module according to claim 5, characterized in that: The insulator is provided with an end face, a terminal receiving hole penetrating the end face, a first extending protrusion protruding from the end face and located on one side of the insulator, and a second extending protrusion protruding from the end face and located on the other side of the insulator; The contact portion of the first signal terminal and the contact portion of the second signal terminal are received in the terminal receiving hole; The first extending protrusion is provided with a first mating surface, the second extending protrusion is provided with a second mating surface, the first limiting groove is provided on the first extending protrusion and passes through the first mating surface, and the second limiting groove is provided on the second extending protrusion and passes through the second mating surface.

7. The terminal module according to claim 1, characterized in that: The ends of the first side wall, the second side wall, the third side wall and the fourth side wall are all provided with inwardly bent deflecting portions, and these deflecting portions are spaced apart from each other. The deflecting portions are configured to guide the metal shielding surrounding piece to be inserted into the docking backplane connector.

8. The terminal module according to claim 1, characterized in that: Each conductive terminal includes a connecting portion connected to the contact portion; the plurality of conductive terminals include a first grounding terminal and a second grounding terminal, wherein the signal terminal pair is located between the first grounding terminal and the second grounding terminal; The terminal module further comprises an insulating support, the connecting portion of the conductive terminal is fixed to the insulating support; the insulating support is provided with a hollow portion, the connecting portion of the conductive terminal is partially exposed in the hollow portion; The metal shielding surround is in contact with the first ground terminal and / or the second ground terminal.

9. The terminal module according to claim 8, characterized in that: The metal shielding enclosure includes a first extension piece extending from the first side wall and a second extension piece extending from the third side wall, the distance between the first extension piece and the second extension piece is greater than the distance between the first side wall and the third side wall, the first extension piece is in vertical contact with the contact portion of the first grounding terminal, and the second extension piece is in vertical contact with the contact portion of the second grounding terminal.

10. The terminal module according to claim 9, characterized in that: The terminal module comprises a first metal shielding sheet located on one side of the insulating support and a second metal shielding sheet on the other side of the insulating support, wherein the first metal shielding sheet is provided with a first main body portion located on one side of the connecting portion of the conductive terminal, and the second metal shielding sheet is provided with a second main body portion located on the other opposite side of the connecting portion of the conductive terminal; The first main body is provided with a first convex rib protruding toward the first ground terminal and a second convex rib protruding toward the second ground terminal; The second main body is provided with a third rib protruding toward the first ground terminal and a fourth rib protruding toward the second ground terminal; The first convex rib and the third convex rib are in contact with two opposite side surfaces of the connecting portion of the first grounding terminal respectively, and the second convex rib and the fourth convex rib are in contact with two opposite side surfaces of the connecting portion of the second grounding terminal respectively; The first main body, the second main body, the first ground terminal, and the second ground terminal form a shielding cavity for accommodating the connection portion of the signal terminal pair.

11. The terminal module according to claim 10, characterized in that: The first metal shielding sheet comprises a first extending portion extending from the first main body portion, and the second metal shielding sheet comprises a second extending portion extending from the second main body portion; The metal shielding surrounding member includes two first slots respectively located on both sides of the first extension piece and two second slots respectively located on both sides of the second extension piece; The first extension is inserted into a first slot and a second slot of the metal shielding surround, and the second extension is inserted into another first slot and another second slot of the metal shielding surround.

12. The terminal module according to claim 9, characterized in that: The first extending piece is provided with a first inclined protrusion formed by stamping, and the second extending piece is provided with a second inclined protrusion formed by stamping. The first inclined protrusion abuts against the contact portion of the first grounding terminal, and the second inclined protrusion abuts against the contact portion of the second grounding terminal.

13. The terminal module according to claim 6, wherein: The insulator includes a receiving space between the first extending protrusion and the second extending protrusion, and the protrusion portion protrudes into the receiving space.

14. A backplane connector, comprising: A housing, wherein the housing is provided with a receiving space for receiving the docking backplane connector and a plurality of terminal receiving slots penetrating the housing and communicating with the receiving space; as well as A plurality of terminal modules are installed in the housing, the terminal modules are the terminal modules according to any one of claims 1 to 13, and the metal shielding surrounding parts of the terminal modules pass through the corresponding terminal receiving grooves to extend into the receiving space.

Images