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 concave part and at least one convex block part, the concave part protrudes towards the inner cavity and is exposed in the inner cavity, the convex block part protrudes away from the inner cavity and is exposed in the inner cavity, and the concave part and the convex block part are configured to adjust the impedance of the signal terminal pair. The utility model also discloses a backboard connector with the terminal module group.

Description

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 signal terminal pairs and ground terminals located on both sides of each signal terminal pair.

[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 to improving the quality of signal transmission. Utility Model Content

[0004] The utility model aims to provide a terminal module and a backplane connector which are beneficial to adjusting impedance.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: a terminal module, which includes:

[0006] A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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;

[0007] an insulator, the insulator comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; and

[0008] A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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;

[0009] The metal shielding surrounding member is provided with at least one recessed portion protruding into the inner cavity and exposed in the inner cavity, and at least one protruding portion protruding away from the inner cavity and exposed in the inner cavity, the recessed portion and the protruding portion are arranged at intervals along the first direction, and the recessed portion and the protruding portion are configured to adjust the impedance of the signal terminal pair.

[0010] As a further improved technical solution of the utility model, the at least one recessed portion includes a first recessed portion and a second recessed portion; the at least one protruding portion includes a first protruding portion; the first recessed portion, the first protruding portion and the second recessed portion are arranged at intervals and in sequence along the first direction.

[0011] As a further improved technical solution of the present invention, the first recessed portion, the first protruding portion and the second recessed portion are all integrally stamped from the metal shielding surrounding member, and the first recessed portion, the first protruding portion and the second recessed portion are aligned along the first direction.

[0012] As a further improved technical solution of the utility model, the at least one recessed portion includes a third recessed portion and a fourth recessed portion; the at least one convex portion includes a second convex portion; the third recessed portion, the second convex portion and the fourth recessed portion are arranged in sequence and spaced apart along the first direction;

[0013] The first recessed portion and the third recessed portion are arranged at intervals along the second direction; the first convex block portion and the second convex block portion are arranged at intervals along the second direction; the second recessed portion and the fourth recessed portion are arranged at intervals along the second direction; and the second direction is perpendicular to the first direction.

[0014] As a further improved technical solution of the present utility model, the first recessed portion, the second recessed portion, the third recessed portion, the fourth recessed portion, the first protruding portion and the second protruding portion are all integrally stamped from the first side wall.

[0015] As a further improved technical solution of the utility model, the first side wall is provided with a first riveted portion and a second riveted portion, and the first riveted portion and the second riveted portion are provided with a dovetail groove and a dovetail protrusion that are buckled together;

[0016] The first recessed portion, the first protruding portion, and the second recessed portion are provided on the first riveted portion;

[0017] The third recessed portion, the second protruding block portion, and the fourth recessed portion are disposed on the second riveting portion.

[0018] As a further improved technical solution of the utility model, the at least one recessed portion includes a fifth recessed portion, a sixth recessed portion, a seventh recessed portion and an eighth recessed portion;

[0019] The at least one protrusion portion includes a third protrusion portion and a fourth protrusion portion;

[0020] The fifth recessed portion, the sixth recessed portion, the seventh recessed portion, the eighth recessed portion, the third convex block portion and the fourth convex block portion are all integrally punched from the third side wall;

[0021] Wherein: the fifth recessed portion, the third protruding portion and the sixth recessed portion are arranged in sequence and spaced apart along the first direction;

[0022] The seventh recessed portion, the fourth protruding portion, and the eighth recessed portion are arranged in sequence and spaced apart from each other along the first direction;

[0023] The fifth recessed portion and the seventh recessed portion are arranged at intervals along the second direction; the third convex block portion and the fourth convex block portion are arranged at intervals along the second direction; and the sixth recessed portion and the eighth recessed portion are arranged at intervals along the second direction.

[0024] As a further improved technical solution of the 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 is opposite to the third side surface, and the second side surface is opposite to the fourth side surface;

[0025] 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;

[0026] 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.

[0027] As a further improved technical solution of the utility model, the ends of the first side wall, the second side wall, the third side wall and the fourth side wall are provided with deflection portions bent inwardly, and these deflection portions are separated from each other, and the deflection portions are configured to guide the metal shielding surround to be inserted into the docking backplane connector.

[0028] As a further improved technical solution of the utility model, 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;

[0029] 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;

[0030] The metal shielding surround is in contact with the first ground terminal and / or the second ground terminal.

[0031] As a further improved technical solution of the utility model, 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.

[0032] As a further improved technical solution of the utility model, the terminal module includes a first metal shielding sheet located 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 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;

[0033] 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;

[0034] 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;

[0035] 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;

[0036] 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.

[0037] As a further improved technical solution of the utility model, the first metal shielding sheet includes a first extension portion extending from the first main body portion, and the second metal shielding sheet includes a second extension portion extending from the second main body portion;

[0038] 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;

[0039] 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.

[0040] As a further improved technical solution of the utility model, the first extension piece is provided with a first inclined protrusion formed by stamping, and the second extension 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.

[0041] To achieve the above purpose, the present invention can also adopt the following technical solution: a terminal module, comprising:

[0042] A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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;

[0043] an insulator, the insulator comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; and

[0044] A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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;

[0045] The metal shielding surrounding piece is provided with a first recessed portion and a second recessed portion protruding into the inner cavity and exposed in the inner cavity, the first recessed portion and the second recessed portion are arranged at intervals along the first direction, and the first recessed portion and the second recessed portion are configured to adjust the impedance of the signal terminal pair.

[0046] To achieve the above purpose, the present invention can also adopt the following technical solution: a terminal module, comprising:

[0047] A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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;

[0048] an insulator, the insulator comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; and

[0049] A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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;

[0050] The metal shield surrounding piece is provided with at least two first protrusions protruding away from the inner cavity and exposed in the inner cavity, the at least two first protrusions are arranged at intervals along the first direction, and the at least two first protrusions are configured to adjust the impedance of the signal terminal pair.

[0051] The utility model also discloses a backplane connector, which includes:

[0052] 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; and

[0053] A plurality of terminal modules are installed in the housing. The terminal modules are the aforementioned terminal modules. The metal shielding surrounding parts of the terminal modules pass through the corresponding terminal receiving grooves to extend into the receiving space.

[0054] Compared with the prior art, the metal shielding surrounding member of the utility model is provided with at least one recessed portion protruding into the inner cavity and exposed in the inner cavity, and at least one convex portion protruding away from the inner cavity and exposed in the inner cavity, the recessed portion and the convex portion are arranged at intervals along the first direction, and the recessed portion and the convex portion are configured to adjust the impedance of the signal terminal pair. When the signal terminal of the docking backplane connector is in the process of separating from the contact portion of the signal terminal pair, the recessed portion and the convex portion can suppress the impedance of the signal terminal, thereby playing an impedance adjustment role. Alternatively, the metal shielding surrounding member is provided with a first recessed portion and a second recessed portion protruding into the inner cavity and exposed in the inner cavity, the first recessed portion and the second recessed portion are arranged at intervals along the first direction, and the first recessed portion and the second recessed portion are configured to adjust the impedance of the signal terminal pair. Alternatively, the metal shielding surrounding member is provided with at least two first protrusion portions protruding away from the inner cavity and exposed in the inner cavity, the at least two first protrusion portions are arranged at intervals along the first direction, and the at least two first protrusion portions are configured to adjust the impedance of the signal terminal pair. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a three-dimensional schematic diagram of a backplane connector assembly of the utility model in one embodiment.

[0056] Figure 2 yes Figure 1 Partial exploded view of the .

[0057] Figure 3 It is a three-dimensional schematic diagram of a backplane connector of the utility model installed on a first circuit board in one embodiment.

[0058] Figure 4 yes Figure 3 Partial exploded view of the .

[0059] Figure 5 yes Figure 4 Partial exploded view of the midplane connector from another angle.

[0060] Figure 6 yes Figure 3 Front view of the midplane connector.

[0061] Figure 7 is the backplane connector to Figure 5 Partial exploded view of the middle shell, with the retaining plate separated.

[0062] Figure 8 This is a side view of a terminal module of the backplane connector.

[0063] Fig. 9 This is a partial exploded view of the backplane connector from another angle.

[0064] Fig.10 yes Fig. 9 A partial enlarged view of the circled portion A.

[0065] Fig.11 It is a three-dimensional schematic diagram of a terminal module of a backplane connector.

[0066] Fig.12 yes Fig.11 Partial exploded view of the .

[0067] Fig.13 is a side view of a first metal shielding sheet of a backplane connector.

[0068] Fig.14 is a side view of the second metal shield of the backplane connector.

[0069] Fig.15 Yes Fig.11 A side view behind a first metal shielding sheet and a second metal shielding sheet, wherein a metal shielding surround and an insulator are separated.

[0070] Fig.16 is along Figure 2 Stereoscopic cross-sectional view of the KK line.

[0071] Fig.17 yes Fig.16 A partial enlarged view of the middle frame portion B.

[0072] Fig.18 It is a partial three-dimensional exploded view of a conductive terminal in a terminal module.

[0073] Fig.19 yes Fig.18 main view.

[0074] Fig. 20 yes Fig.18 A partial enlarged view of the circled portion C.

[0075] Fig.21 yes Fig.19 A partial enlarged view of the circled portion D.

[0076] Fig. 22 yes Fig.21 A partial enlarged view from another angle.

[0077] Fig.23 It is a three-dimensional exploded view of the metal shield surrounding parts and the insulator.

[0078] Fig.24 yes Fig.23 Exploded three-dimensional image from another angle.

[0079] Fig.25 yes Fig.24 Exploded three-dimensional image from another angle. DETAILED DESCRIPTION

[0080] The exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are merely examples of devices, products and / or methods that are consistent with some aspects of the present invention and are recorded in the claims of the present invention.

[0081] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0082] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of description and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprise" include the elements appearing after "include" or "comprise" and their equivalents, which does not exclude that the elements appearing before "include" or "comprise" may also include other elements. If "several" appears in the present invention, it means two or more.

[0083] Please refer to Figure 1 and Figure 2As shown, the utility model discloses a backplane connector assembly, which includes a backplane connector 200, a docking backplane connector 100 matched 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 embodiment shown in the figure of the utility model, the backplane connector 200 and the docking backplane connector 100 are plugged in an orthogonal manner, and the second circuit board 301 is perpendicular to the first circuit board 302.

[0084] Please refer to Figure 3 As shown, in the illustrated embodiment of the present invention, the backplane connector 200 is fixed to the first circuit board 302 by bolts 303. The backplane connector 200 is used to be plugged with the docking backplane connector 100 to achieve high-speed data transmission.

[0085] 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 retaining piece 7 retained on one side of the plurality of terminal modules 6 , and a retaining block 8 retained on the other side of the plurality of terminal modules 6 .

[0086] The shell 5 is made of insulating material, and includes a main body 51, a wall 52 extending from the main body 51 to one end (for example, forward), and a frame 53 extending from the main body 51 to the other end (for example, backward). The main body 51 is provided with a plurality of terminal receiving grooves 511 extending along a first direction A1-A1 (for example, front-to-back direction). Those skilled in the art will understand that the first direction A1-A1 is the plug-in and unplug direction of the backplane connector 200 and the docking backplane connector 100. Figure 6 As shown, in the illustrated embodiment of the utility model, the terminal receiving grooves 511 are arranged in multiple rows along the second direction A2-A2 (for example, the left-right direction), wherein two adjacent rows of terminal receiving grooves 511 are staggered along the third direction A3-A3 (for example, the up-down direction), that is, the terminal receiving grooves 511 at corresponding positions in two adjacent 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 that are 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 first slots 5211 and the second slots 5221 that are aligned with each other and the terminal receiving grooves 511 corresponding thereto are used together to accommodate the terminal module 6.

[0087] 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 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, so as to improve the docking accuracy when mating with the docking backplane connector 100.

[0088] 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 on one side of the insulating bracket 61, and a second metal shielding sheet 64 fixed on the other opposite side of the insulating bracket 61.

[0089] Please refer to Fig.12 and Fig.15 As shown, the insulating support 61 is roughly 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 play a role in strengthening 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 the following figure for details. Figure 7As shown, the retaining sheet 7 is generally L-shaped, and is provided with a first clamping groove 71 and a second clamping groove 72 for clamping the first protrusion 6111 and the second protrusion 6131 respectively. In this way, the terminal modules 6 can be formed into a whole by providing the retaining sheet 7. In the embodiment shown in the figure of the utility model, the insulating bracket 61 is provided with a hollow portion 610, and the connecting wall 615 includes 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 arranged obliquely. 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 further includes a reinforcing wall 6153 that connects the top wall 613 and the bottom wall 614 and is parallel to the front wall 612 .

[0090] Please refer to Fig.12 and Fig.15 As shown, the front wall 612 is provided with a plurality of protrusions 6121 arranged at intervals and a groove 6122 located between two adjacent protrusions 6121. The protrusions 6121 are provided with openings 6123 to partially expose the conductive terminals 62 to adjust the impedance.

[0091] The insulating bracket 61 is also provided with a plurality of bosses 616 for fixing and positioning the first metal shielding sheet 63 and the second metal shielding sheet 64. In the embodiment shown in the figure of the present utility model, the bosses 616 are roughly cylindrical. In the embodiment shown in the figure of the present utility model, the bosses 616 are arranged 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 the embodiment of the present utility model. Figures 12 to 15 As shown, the boss 616 includes a first boss 6161 and a second boss 6162 , wherein the first boss 6161 and the second boss 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 .

[0092] From a structural point of view, please refer to Figures 16 to 22As shown, in the illustrated embodiment of the present utility model, each group 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 retaining block 8 is provided with a through hole for the tail portion 622 to pass through, so as to facilitate 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 to electrically connect 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 Fig.15 As shown, the first portion 623a extends vertically, the second portion 623b extends horizontally, and the third portion 623c extends obliquely.

[0093] From a functional point of view, each group 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 utility model, adjacent first signal terminals S1 and second signal terminals 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 group of conductive terminals 62 is arranged in a G1-S1-S2-G2 manner, which 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 between them. This design is conducive to increasing the shielding area, thereby improving the shielding effect.

[0094] In the embodiment shown in the figure of the utility model, the connection portion 623 of the conductive terminal 62 is insert molded in the insulating bracket 61. The connection portion 623 of the signal terminal pair, the connection portion 623 of the first ground terminal G1 and the connection portion 623 of the second ground terminal G2 are all exposed in the same hollow portion 610. The connection portion 623 of the signal terminal S is provided with a narrowing portion 6230 buried in the insulating bracket 61 (see Fig.12 As shown), the impedance of the signal terminal S is adjusted to achieve impedance matching.

[0095] Please refer to Figures 18 to 22As shown, in the illustrated embodiment of the 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 twisting portion 625 connected to the first extension portion 624, and a second extension portion 626 connected to the twisting portion 625. The first extension portion 624, the twisting portion 625, and the second extension portion 626 extend along the first direction A1-A1 (for example, the front-to-back 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 portion 624 of the first signal terminal S1 and the first extension portion 624 of the second signal terminal S2 are arranged side by side and spaced apart along the second direction A2-A2 (for example, the left-right direction), and the narrow side of the first extension portion 624 of the first signal terminal S1 is coupled with the narrow side of the first extension portion 624 of the second signal terminal S2. The second extension portion 626 of the first signal terminal S1 and the second extension portion 626 of the second signal terminal S2 are arranged at intervals along the third direction A3-A3 (for example, the up-down direction), and the narrow side of the second extension portion 626 of the first signal terminal S1 is coupled with the narrow side of the second extension portion 626 of the second signal terminal S2. The torsion portion 625 is contracted compared to the first extension portion 624 and the second extension portion 626 at both ends thereof, so as to reduce the resistance when the torsion portion 625 is torsionally formed, thereby reducing the manufacturing difficulty. In addition, this arrangement is also conducive to making the torsion area where the torsion portion 625 is located as short as possible, thereby improving the coupling effect of the first signal terminal S1 and the second signal terminal S2. By setting the torsion portion 625, the second extension portion 626 is substantially perpendicular to the first extension portion 624.

[0096] 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.

[0097] 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.

[0098] In the illustrated embodiment of the 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 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, respectively, have the same structure, and are aligned along the second direction A2-A2. The plane P1 where the first step surface 6241a and the second step surface 6241b are located is located 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 upward, and the second extension surface 6242b is lower than the first step surface 6241a and the second step surface 6241b downward. Preferably, the first turning portion 6244a, the first extension surface 6242a, the twisting portion 625 and the second extension portion 626 of the first signal terminal S1 are symmetrically arranged along the plane P1 where the first step surface 6241a and the second step surface 6241b are located. Such an arrangement is conducive to making the structure and length of the first signal terminal S1 and the second signal terminal S2 closer, thereby facilitating the improvement of impedance matching. The first extension surface 6242a and the second extension surface 6242b both include a wide side and a narrow side, wherein 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 invention, 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. This arrangement facilitates the use of a clamp to twist the first signal terminal S1 and the second signal terminal S2 at the same time, thereby improving production efficiency.

[0099] The first extension portion 624 and the second extension portion 626 of the first signal terminal S1 and the second signal terminal S2 of the utility model are perpendicular to each other; the first bottom surface 6240a, the first inclined portion 6243a and the first step surface 6241a of the first signal terminal S1 correspond to the second bottom surface 6240b, the second inclined portion 6243b and the second step surface 6241b of the second signal terminal S2 respectively, have the same structure, and are coupled through a narrow edge; the second extension portion 626 of the first signal terminal S1 corresponds to the second extension portion 626 of the second signal terminal S2, have the same structure, and are coupled through a narrow edge; the first extension surface 6242a of the first signal terminal S1 close to the torsion portion 625 is wide-surface coupled with the second extension surface 6242b of the second signal terminal S2 close to the torsion portion 625; this arrangement is conducive to making the first signal terminal S1 and the second signal terminal S2 in the signal terminal pair tightly coupled, so that the insertion loss tends to be stable, and the signal transmission quality of the signal terminal pair is improved.

[0100] Please refer to Fig. 20 As shown, in the embodiment of the utility model, each contact portion 621 of the signal terminal S is a two-half structure. In the same signal terminal pair, the contact portion 621 of the first signal terminal S1 and the contact portion 621 of the second signal terminal S2 are completely identical, so as to facilitate manufacturing and reduce costs. The following description only takes the contact portion 621 of the first signal terminal S1 as an example.

[0101] The contact portion 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 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 toward the same side (e.g., upward) from two opposite edges of the first signal terminal S1. The first contact arm 6211 and the second contact arm 6212 are symmetrically arranged on both sides of the first clamping space 6210.

[0102] When the needle-shaped signal terminal 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 be elastically deformed to improve contact reliability.

[0103] The contact portion 621 of the first ground terminal G1 and the second ground terminal G2 is generally in the shape of a plate. 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 all coplanar. The contact portion 621 of the first ground terminal G1 and the contact portion 621 of the second ground terminal G2 extend into the corresponding groove 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.

[0104] Please refer to Fig.16 and Fig.17 As shown, in the illustrated embodiment of the present invention, the contact portion 621 and the connecting 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 connecting 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 connecting 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.

[0105] Please refer to Fig.18 , Fig.19 as well as Fig.23As shown, each terminal module 6 further includes an insulator 65 sleeved on the contact portion 621 of the signal terminal S and a metal shielding surrounding member 66 sleeved on the insulator 65. In the embodiment shown in the figure 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 mating terminal is inserted. Each of the insulators 65 is provided with an end face 652, at least one terminal receiving hole 6520 penetrating the end face 652, a first extending protrusion 6591 protruding from the end face 652 and located on one side of the insulator 65, and a second extending protrusion 6592 protruding from the end face 652 and located on the other side of the insulator 65. The insulator 65 is also provided with a receiving space 6590 located between the first extending protrusion 6591 and the second extending protrusion 6592. The first extension protrusion 6591 is provided with a first mating surface 6591a, and the second extension protrusion 6592 is provided with a second mating surface 6592a. The contact portion 621 of the first signal terminal S1 and the contact portion 621 of the second signal terminal S2 are received in the terminal receiving hole 6520. In the illustrated embodiment of the utility model, the insulator 65 is substantially in the shape of a rectangular parallelepiped, and 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 is opposite to the third side surface 655, and the second side surface 654 is opposite to the fourth side surface 656. The first extension protrusion 6591 and the second extension protrusion 6592 are respectively provided on the second side surface 654 and the fourth side surface 656. The first extension protrusion 6591 is provided with a first limiting groove 6571 penetrating the first mating surface 6591a, and the second extension protrusion 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 convex ribs 658 located behind the first limiting groove 6571 and the second limiting groove 6572 .

[0106] The metal shielding surrounding member 66 is substantially in the shape of a rectangular parallelepiped. In one embodiment of the present invention, the metal shielding surrounding member 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 surrounding member 66 by other means.

[0107] Please refer to Fig.10 as well as Figure 23 to Figure 25As shown, the metal shielding surrounding member 66 includes a first side wall 661, a second side wall 662, a third side wall 663 and a fourth side wall 664 connected in sequence, wherein the first side wall 661 is opposite to the third side wall 663, and the second side wall 662 is opposite to the fourth side wall 664. The metal shielding surrounding member 66 includes an inner cavity 660 surrounded by the first side wall 661, the second side wall 662, the third side wall 663 and the fourth side wall 664. In the embodiment shown in the figure of the utility model, the first side wall 661, the second side wall 662, the third side wall 663 and the fourth side wall 664 are formed by stamping, bending and buckling a metal plate. The first side wall 661, the second side wall 662, the third side wall 663 and the fourth side wall 664 correspond to the first side 653, the second side 654, the third side 655 and the fourth side 656 of the insulator 65 respectively. The area of ​​the first side wall 661 and the third side wall 663 is larger than the area of ​​the second side wall 662 and the fourth side wall 664. The ends of the first side wall 661, the second side wall 662, the third side wall 663 and the fourth side wall 664 are all provided with a deflection portion 665 bent inwardly. By providing the deflection portion 665, on the one hand, a contraction opening can be formed at the end of the metal shielding surrounding member 66, so that the outer surface 6651 of the deflection portion 665 can guide the terminal module 6 to be installed on the housing 5, and even guide the metal shielding surrounding member 66 to be inserted into the docking backplane connector 100. In addition, the second side wall 662 and the fourth side wall 664 are also respectively provided with a first convex bump 6671 and a second convex bump 6672 formed by inward stamping. The second side wall 662 and the fourth side wall 664 are also respectively provided with a bulge 668 formed by outward stamping. The first convex bump 6671 and the second convex bump 6672 protrude into the inner cavity 660. When the metal shielding surrounding member 66 and the insulator 65 are assembled, the first convex bump 6671 and the second convex bump 6672 extend into the corresponding first limiting groove 6571 and the second limiting groove 6572 respectively to achieve limiting; when the metal shielding surrounding member 66 and the insulator 65 are assembled in place, the convex ribs 658 of the second side surface 654 and the fourth side surface 656 abut against the second side wall 662 and the fourth side wall 664 respectively to improve the holding force; in addition, the first convex bump 6671 and the second convex bump 6672 abut against the rear ends of the corresponding first limiting groove 6571 and the second limiting groove 6572 respectively to limit the relative position between the metal shielding surrounding member 66 and the insulator 65.In the illustrated embodiment of the utility model, the first convex bump 6671 and the second convex bump 6672 are clamped in the corresponding first limiting groove 6571 and the second limiting groove 6572, and the first convex bump 6671 and the second convex bump 6672 are blocked by the first extension protrusion 6591 and the second extension protrusion 6592 of the insulator 65 and are not exposed in the inner cavity 660. When the signal terminal of the docking backplane connector 100 is separated from the contact portion 621 of the signal terminal pair, the signal terminal of the docking backplane connector 100 will pass through the first extension protrusion 6591 and the second extension protrusion 6592 along the first direction A1-A1. At this time, the first extension protrusion 6591 and the second extension protrusion 6592 can reduce the degree of dielectric constant change caused by the surrounding air medium of the signal terminal pair, thereby playing an impedance adjustment role. The ridge 668 is pressed against the inner side wall of the terminal receiving groove 511 formed on the body 51 to increase the holding force. In an embodiment of the present invention, the raised portion 668 abuts against the blocking wall on the inner wall to limit the position of the terminal module 6 when the terminal module 6 is installed in the housing 5 .

[0108] In the illustrated embodiment of the present invention, the metal shielding enclosure 66 also includes a first extension piece 6611 extending from the first side wall 661 and a first slot 6612 located on both sides of the first extension piece 6611. The metal shielding enclosure 66 also includes a second extension piece 6631 extending from the third side wall 663 and a second slot 6632 located on both sides of the second extension piece 6631. The first extension piece 6611 is in vertical contact with the contact portion 621 of the first grounding terminal G1 to improve the shielding effect; the second extension piece 6631 is in vertical contact with the contact portion 621 of the second grounding terminal G2 to improve the shielding effect. In the illustrated embodiment of the present invention, the first extension piece 6611 and the second extension piece 6631 are deflected outward and then extended, so that the distance between the first extension piece 6611 and the second extension piece 6631 on the same metal shielding enclosure 66 is greater than the distance between the first side wall 661 and the third side wall 663. Please refer to Fig.19As shown, for a group of conductive terminals 62 arranged in G1-S1-S2-G2, the contact portion 621 of the first ground terminal G1 is provided with a first notch 6216 close to the signal terminal pair, and the first notch 6216 is used to accommodate the first extension piece 6611; the contact portion 621 of the second ground terminal G2 is provided with a second notch 6217 close to the signal terminal pair, and the second notch 6217 is used to accommodate the second extension piece 6631. In the embodiment shown in the figure of the present utility model, taking the example that two adjacent pairs of signal terminal pairs share a second ground terminal G2, the two sides of the second ground terminal G2 are respectively provided with second notches 6217 facing different signal terminal pairs, and the notches 6217 are used to match with two adjacent metal shielding surrounding members 66. The first extension piece 6611 is provided with a first inclined protrusion 6611a formed by stamping outward (for example, upward), and the second extension piece 6631 is provided with a second inclined protrusion 6631a formed by stamping outward (for example, downward). In the illustrated embodiment of the present utility model, the protrusion directions of the first inclined protrusion 6611a and the second inclined protrusion 6631a are opposite. When 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 protrusion 6611a can abut against the contact portion 621 of the first ground terminal G1 to improve contact reliability. Similarly, when 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 protrusion 6631a can abut against the contact portion 621 of the second ground terminal G2 to improve contact reliability.

[0109] The metal shield surrounding member 66 is provided with at least one recessed portion 666 protruding into the inner cavity 660 and exposed in the inner cavity 660, and at least one protruding portion 669 protruding away from the inner cavity 660 and exposed in the inner cavity 660. The recessed portion 666 protrudes into the accommodating space 6590. The recessed portion 666 and the protruding portion 669 are arranged at intervals along the first direction A1-A1. The recessed portion 666 and the protruding portion 669 are configured to adjust impedance so that the impedance is relatively stable.

[0110] In the illustrated embodiment of the present utility model, the at least one recessed portion 666 includes a first recessed portion 6661, a second recessed portion 6662, a third recessed portion 6663, and a fourth recessed portion 6664. The at least one protrusion portion 669 includes a first protrusion portion 6691 and a second protrusion portion 6692. In the illustrated embodiment of the present utility model, the first recessed portion 6661, the second recessed portion 6662, the third recessed portion 6663, the fourth recessed portion 6664, the first protrusion portion 6691, and the second protrusion portion 6692 are all integrally stamped from the first side wall 661. The first recessed portion 6661, the first protrusion portion 6691, and the second recessed portion 6662 are arranged in sequence along the first direction A1-A1 at intervals. The third recessed portion 6663, the second protrusion portion 6692, and the fourth recessed portion 6664 are arranged in sequence along the first direction A1-A1 at intervals. In the illustrated embodiment of the present invention, the first recessed portion 6661, the first protruding portion 6691 and the second recessed portion 6662 are aligned along the first direction A1-A1. The third recessed portion 6663, the second protruding portion 6692 and the fourth recessed portion 6664 are aligned along the first direction A1-A1.

[0111] In the illustrated embodiment of the present invention, the first recessed portion 6661 and the third recessed portion 6663 are arranged at intervals along the second direction A2-A2; the first protrusion portion 6691 and the second protrusion portion 6692 are arranged at intervals along the second direction A2-A2; the second recessed portion 6662 and the fourth recessed portion 6664 are arranged at intervals along the second direction A2-A2; the second direction A2-A2 is perpendicular to the first direction A1-A1.

[0112] In the illustrated embodiment of the utility model, the first side wall 661 is provided with a first riveted portion 661a and a second riveted portion 661b, and the first riveted portion 661a and the second riveted portion 661b are provided with a dovetail groove 661a1 and a dovetail protrusion 661b1 that are interlocked. One of the two first recessed portions 6613 is provided on the first riveted portion 661a, and the other of the two first recessed portions 6613 is provided on the second riveted portion 661b. In the illustrated embodiment of the utility model, the first recessed portion 6613 and the second recessed portion 6633 are provided near the deflection portion 665. In other words, the first recessed portion 6613 and the second recessed portion 6633 are provided near the socket of the inner cavity 660.

[0113] In the illustrated embodiment of the present invention, the first recessed portion 6661, the first protruding portion 6691 and the second recessed portion 6662 are provided in the first riveted portion 661a; the third recessed portion 6663, the second protruding portion 6692 and the fourth recessed portion 6664 are provided in the second riveted portion 661b.

[0114] In addition, the at least one recessed portion 666 includes a fifth recessed portion 6665, a sixth recessed portion 6666, a seventh recessed portion 6667, and an eighth recessed portion 6668. The at least one protrusion portion 669 includes a third protrusion portion 6693 and a fourth protrusion portion 6694. The fifth recessed portion 6665, the sixth recessed portion 6666, the seventh recessed portion 6667, the eighth recessed portion 6668, the third protrusion portion 6693, and the fourth protrusion portion 6694 are all integrally stamped from the third sidewall 663. The fifth recessed portion 6665, the third protrusion portion 6693, and the sixth recessed portion 6666 are arranged in sequence along the first direction A1-A1 at intervals. The seventh recessed portion 6667, the fourth protrusion portion 6694, and the eighth recessed portion 6668 are arranged in sequence along the first direction A1-A1 at intervals. The fifth recessed portion 6665 and the seventh recessed portion 6667 are arranged at intervals along the second direction A2-A2; the third convex portion 6693 and the fourth convex portion 6694 are arranged at intervals along the second direction A2-A2; the sixth recessed portion 6666 and the eighth recessed portion 6668 are arranged at intervals along the second direction A2-A2.

[0115] In the embodiment of the utility model shown in the figure, the first metal shielding sheet 63 and the second metal shielding sheet 64 are symmetrically arranged on both sides of the insulating bracket 61. Fig.12 as well as Fig.13As shown, the first metal shielding sheet 63 includes a first main body 631, a first extension portion 632 extending from the first main body 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 631 to contact the first grounding terminal G1 and the second grounding terminal G2 respectively. The first main body 631 is located on one side of the connecting portion 623 of the conductive terminal 62. In the embodiment shown in the figure of the utility model, the first extension portion 632 and the first main body 631 are located in different planes, wherein the first extension portion 632 is farther away from the second metal shielding sheet 64 than the first main body 631. The first main body 631 is provided with a plurality of first mounting holes 6311 matched with a plurality of first convex columns 6161, and the first convex columns 6161 are fixed to the first mounting holes 6311 by welding. The first main body 631 is provided with a plurality of convex ribs 633, and the convex ribs 633 include a first convex rib 6331 protruding toward the first ground terminal G1 and a second convex rib 6332 protruding toward the second ground terminal G2. The first convex rib 6331 is arranged along the extension direction of the connection portion 623 of the first ground terminal G1. The second convex rib 6332 is arranged along the extension direction of the connection portion 623 of the second ground terminal G2. In the illustrated embodiment of the utility model, the first convex rib 6331 and the second convex rib 6332 are formed by stamping the first main body 631. The first convex rib 6331 and the second convex rib 6332 protrude toward the direction of the second metal shielding sheet 64. The first convex rib 6331 and the second convex rib 6332 are discontinuously arranged along the extension direction of the connection portion 623 of the first ground terminal G1 and the second ground terminal G2, so as to realize 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 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 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 Fig.13As shown, the first convex rib 633a extends vertically, the second convex rib 633b extends horizontally, and the third convex rib 633c extends obliquely. The first convex rib 633a, the second convex rib 633b, and the third convex rib 633c are in contact with the first part 623a, the second part 623b, and the third part 623c of the corresponding first grounding terminal G1 and the second grounding terminal G2, respectively.

[0116] In addition, the first main body 631 is further provided with a plurality of first protruding pieces 6312 further extending downward from the bottom edge thereof and a connecting piece 6313 located between two adjacent first protruding pieces 6312. The first protruding pieces 6312 can extend the shielding length and improve the shielding effect of the signal terminal S. In the illustrated embodiment of the utility model, the connecting piece 6313 is stamped from the first main body 631, and the connecting piece 6313 spans the slot 6231 to connect the first end 6232 of the same first grounding terminal G1 with one side of the second end 6233 to improve the shielding effect; at the same time, the connecting piece 6313 can also connect the first end 6232 of the same second grounding terminal G2 with one side of the second end 6233 to improve the shielding effect.

[0117] In the illustrated embodiment of the present invention, the first extension portions 632 are multiple and 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 surrounding member 66 to achieve contact and improve shielding effect.

[0118] Similarly, see Fig.12 as well as Fig.14As shown, the second metal shielding sheet 64 includes a second main body 641, a second extension portion 642 extending from the second main body 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 641 to contact the first grounding terminal G1 and the second grounding terminal G2 respectively. The second main body 641 is located on the other opposite side of the connecting portion 623 of the conductive terminal 62. In the embodiment shown in the figure of the utility model, the second extension portion 642 and the second main body 641 are located in different planes, wherein the second extension portion 642 is farther away from the first metal shielding sheet 63 than the second main body 641. The second main body 641 is provided with a plurality of second mounting holes 6411 matched 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 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 extension direction of the connection portion 623 of the first ground terminal G1. The fourth rib 6432 is arranged along the extension direction of the connection portion 623 of the second ground terminal G2. In the illustrated embodiment of the utility model, the third rib 6431 and the fourth rib 6432 are formed by stamping the second main body 641. The third rib 6431 and the fourth rib 6432 protrude toward the direction of the first metal shielding sheet 63. The third rib 6431 and the fourth rib 6432 are discontinuously arranged along the extension direction of the connection portion 623 of the first ground terminal G1 and the second ground terminal G2, so as to realize multi-point contact, so as to improve the contact reliability of the second metal shielding sheet 64 with the first ground terminal G1 and the second ground terminal G2. In the illustrated embodiment of the present invention, 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 body portion 641 located between the third rib 6431 and the fourth rib 6432 are the same. Specifically, the third rib 6431 and the fourth rib 6432 each 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 Fig.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 in contact with the first portion 623a, the second portion 623b, and the third portion 623c of the corresponding first grounding terminal G1 and the second grounding terminal G2, respectively.

[0119] In one embodiment of the utility model, welding is performed on the surface of the convex rib 633 and the convex rib 643 to weld the convex rib 633 and the convex rib 643 to the first ground terminal G1 and the second ground terminal G2. For example, welding is performed on the surface of the first convex rib 6331, the second convex rib 6332, the third convex rib 6431 and the fourth convex rib 6432 to weld the first convex rib 6331, the second convex rib 6332, the third convex rib 6431 and the fourth convex rib 6432 to the first ground terminal G1 and the second ground terminal G2, wherein the welding method is at least one of spot welding, laser welding and ultrasonic welding.

[0120] In addition, the second main body 641 is further provided with a plurality of fourth protruding pieces 6412 further extending downward from the bottom edge thereof and a connecting piece 6413 located between two adjacent fourth protruding pieces 6412. The fourth protruding pieces 6412 are provided to extend the shielding length and improve the shielding effect of the signal terminal S. In the illustrated embodiment of the utility model, the connecting piece 6413 is stamped from the second main body 641, and the connecting piece 6413 spans the slot 6231 to connect the first end 6232 of the same first grounding terminal G1 with the other opposite side of the second end 6233 to improve the shielding effect; at the same time, the connecting piece 6413 can also connect the first end 6232 of the same second grounding terminal G2 with the other opposite side of the second end 6233 to improve the shielding effect.

[0121] In the illustrated embodiment of the present invention, the second extension portions 642 are multiple and spaced apart. The second extension portions 642 are used to be inserted into the first slot 6612 and the second slot 6632 of the metal shielding surrounding member 66 to achieve contact and improve the shielding effect.

[0122] Please refer to Fig.17As shown, along the length of the connection portion 623 of the conductive terminal 62, the first convex rib 6331 of the first metal shielding sheet 63 and the third convex rib 6431 of the second metal shielding sheet 64 are 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 connection portion 623 of each signal terminal pair. In the illustrated embodiment of the utility model, the first convex rib 6331 and the third convex rib 6431 are in contact with the first wide surface 621a of the connection portion 623 of the first ground terminal G1, and the second convex rib 6332 and the fourth convex rib 6432 are 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 utility model, the shielding cavity 67 is formed by the first main body 631, the second main body 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 protruding piece 6234 extending into the shielding cavity 67, the connection portion 623 of the second ground terminal G2 is provided with a second protruding piece 6235 extending into the shielding cavity 67, and the connection portion 623 of the signal terminal pair is located between the first protruding piece 6234 and the second protruding piece 6235. There are multiple shielding cavities 67 and they are continuously arranged along the arrangement direction of each group of the conductive terminals 62, wherein two adjacent shielding cavities 67 share a first grounding terminal G1 or a second grounding terminal G2. Taking the shared first grounding terminal G1 as an example, a part of the shared first grounding terminal G1 protrudes into one shielding cavity 67, and another part of the shared first grounding terminal G1 protrudes into another shielding cavity 67.

[0123] 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 both inserted into the first narrow groove 6612 and the second narrow groove 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 grounding terminal G1 and the second notch 6217 of the second grounding terminal G2; at the same time, the first elastic arm 634 of the first metal shielding piece 63 and the third elastic arm 644 of the second metal shielding piece 64 are clamped on both sides of the contact portion 621 of the first grounding terminal G1; the second elastic arm 635 of the first metal shielding piece 63 and the fourth elastic arm 645 of the second metal shielding piece 64 are clamped on both sides of the contact portion 621 of the second grounding terminal G2. Specifically, the first elastic arm 634 and the third elastic arm 644 clamp the first wide surface 621a of the first grounding terminal G1; the second elastic arm 635 and the fourth elastic arm 645 clamp the second wide surface 621c of the second grounding terminal G2. In this way, the first metal shielding sheet 63, the second metal shielding sheet 64, the metal shielding surrounding member 66, the first grounding terminal G1 and the second grounding terminal G2 are connected in series, thereby increasing the shielding area and improving the shielding effect.

[0124] In the illustrated embodiment of the utility model, the backplane connector 200 has a plurality of terminal modules 6, and the terminal arrangements of two adjacent terminal modules 6 are staggered. Accordingly, the shielding cavities 67 of two adjacent terminal modules 6 are also staggered. When the terminal module 6 is mounted to the housing 5, the metal shielding surrounding member 66 of the terminal module 6 passes through the corresponding terminal receiving groove 511 to extend into the receiving space 535.

[0125] Compared with the prior art, the metal shield surrounding member 66 of the present invention is provided with at least one recessed portion 666 protruding into the inner cavity 660 and exposed in the inner cavity 660, and at least one protruding portion 669 protruding away from the inner cavity 660 and exposed in the inner cavity 660, and the recessed portion 666 and the protruding portion 669 are configured to adjust the impedance of the signal terminal pair. When the signal terminal of the docking backplane connector 100 is in the process of being separated from the contact portion 621 of the signal terminal pair, the signal terminal of the docking backplane connector 100 will pass through the recessed portion 666 and the protruding portion 669 along the first direction A1-A1. At this time, the recessed portion 666 and the protruding portion 669 can suppress the impedance of the signal terminal, thereby playing an impedance adjustment role.

[0126] In addition, technicians in the relevant technical field can understand that the metal shielding surround 66 is provided with a first recessed portion 6661 and a second recessed portion 6662 protruding into the inner cavity 660 and exposed in the inner cavity 660, the first recessed portion 6661 and the second recessed portion 6662 are arranged at intervals along the first direction A1-A1, and the first recessed portion 6661 and the second recessed portion 6662 are configured to adjust the impedance of the signal terminal pair; the metal shielding surround 66 is provided with a third recessed portion 6663 and a fourth recessed portion 6664 protruding into the inner cavity 660 and exposed in the inner cavity 660, the third recessed portion 6663 and the fourth recessed portion 6664 are arranged at intervals along the first direction A1-A1, and the third recessed portion 6663 and the fourth recessed portion 6664 are configured to adjust the impedance of the signal terminal pair. The metal shield surrounding member 66 is provided with a fifth recessed portion 6665 and a sixth recessed portion 6666 protruding into the inner cavity 660 and exposed in the inner cavity 660, the fifth recessed portion 6665 and the sixth recessed portion 6666 are arranged at intervals along the first direction A1-A1, and the fifth recessed portion 6665 and the sixth recessed portion 6666 are configured to adjust the impedance of the signal terminal pair. The metal shield surrounding member 66 is provided with a seventh recessed portion 6667 and an eighth recessed portion 6668 protruding into the inner cavity 660 and exposed in the inner cavity 660, the seventh recessed portion 6667 and the eighth recessed portion 6668 are arranged at intervals along the first direction A1-A1, and the seventh recessed portion 6667 and the eighth recessed portion 6668 are configured to adjust the impedance of the signal terminal pair.

[0127] Technicians in the relevant technical field can understand that the metal shielding surround 66 is provided with at least two first protrusion portions 6691 protruding away from the inner cavity 660 and exposed in the inner cavity 660, the at least two first protrusion portions 6691 are arranged at intervals along the first direction A1-A1, and the at least two first protrusion portions 6691 are configured to adjust the impedance of the signal terminal pair; the metal shielding surround 66 is provided with at least two second protrusion portions 6692 protruding away from the inner cavity 660 and exposed in the inner cavity 660, the at least two second protrusion portions 6692 are arranged at intervals along the first direction A1-A1, and the at least two second protrusion portions 6692 are configured to adjust the impedance of the signal terminal pair. The metal shield surrounding member 66 is provided with at least two third protrusions 6693 protruding away from the inner cavity 660 and exposed in the inner cavity 660, the at least two third protrusions 6693 are arranged at intervals along the first direction A1-A1, and the at least two third protrusions 6693 are configured to adjust the impedance of the signal terminal pair. The metal shield surrounding member 66 is provided with at least two fourth protrusions 6694 protruding away from the inner cavity 660 and exposed in the inner cavity 660, the at least two fourth protrusions 6694 are arranged at intervals along the first direction A1-A1, and the at least two fourth protrusions 6694 are configured to adjust the impedance of the signal terminal pair.

[0128] The above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on the technical personnel in the relevant technical field. Although the present invention has been described in detail in this specification with reference to the above implementation modes, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A terminal module, characterized in that: include: A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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 comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; as well as A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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 shielding surrounding member is provided with at least one recessed portion protruding into the inner cavity and exposed in the inner cavity, and at least one protruding portion protruding away from the inner cavity and exposed in the inner cavity, the recessed portion and the protruding portion are arranged at intervals along the first direction, and the recessed portion and the protruding portion are configured to adjust the impedance of the signal terminal pair.

2. The terminal module according to claim 1, characterized in that: The at least one recessed portion includes a first recessed portion and a second recessed portion; the at least one protruding portion includes a first protruding portion; the first recessed portion, the first protruding portion and the second recessed portion are spaced apart and arranged in sequence along the first direction.

3. The terminal module according to claim 2, characterized in that: The first recessed portion, the first protruding portion, and the second recessed portion are all integrally punched from the metal shielding surrounding member, and the first recessed portion, the first protruding portion, and the second recessed portion are aligned along the first direction.

4. The terminal module according to claim 2, characterized in that: The at least one recessed portion includes a third recessed portion and a fourth recessed portion; the at least one protruding portion includes a second protruding portion; the third recessed portion, the second protruding portion and the fourth recessed portion are arranged in sequence and spaced apart along the first direction; The first recessed portion and the third recessed portion are arranged at intervals along the second direction; the first convex block portion and the second convex block portion are arranged at intervals along the second direction; the second recessed portion and the fourth recessed portion are arranged at intervals along the second direction; and the second direction is perpendicular to the first direction.

5. The terminal module according to claim 4, characterized in that: The first recessed portion, the second recessed portion, the third recessed portion, the fourth recessed portion, the first convex block portion, and the second convex block portion are all integrally punched from the first side wall.

6. The terminal module according to claim 5, characterized in that: The first side wall is provided with a first riveted portion and a second riveted portion, and the first riveted portion and the second riveted portion are provided with a dovetail groove and a dovetail protrusion that are buckled together; The first recessed portion, the first convex portion and the second recessed portion are provided on the first riveted portion; The third recessed portion, the second protruding block portion, and the fourth recessed portion are disposed on the second riveted portion.

7. The terminal module according to claim 4, characterized in that: The at least one recessed portion includes a fifth recessed portion, a sixth recessed portion, a seventh recessed portion, and an eighth recessed portion; The at least one protrusion portion includes a third protrusion portion and a fourth protrusion portion; The fifth recessed portion, the sixth recessed portion, the seventh recessed portion, the eighth recessed portion, the third convex block portion and the fourth convex block portion are all integrally punched from the third side wall; Wherein: the fifth recessed portion, the third protruding portion and the sixth recessed portion are arranged in sequence and spaced apart along the first direction; The seventh recessed portion, the fourth protruding portion, and the eighth recessed portion are arranged in sequence and spaced apart from each other along the first direction; The fifth recessed portion and the seventh recessed portion are arranged at intervals along the second direction; the third convex block portion and the fourth convex block portion are arranged at intervals along the second direction; and the sixth recessed portion and the eighth recessed portion are arranged at intervals along the second direction.

8. The terminal module according to claim 1, characterized in that: 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.

9. 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.

10. The terminal module according to claim 1, wherein: 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.

11. The terminal module according to claim 10, 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.

12. The terminal module according to claim 11, 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.

13. The terminal module according to claim 12, wherein: 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.

14. The terminal module according to claim 11, 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.

15. A terminal module, characterized in that: include: A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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 comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; as well as A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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 shielding surrounding piece is provided with a first recessed portion and a second recessed portion protruding into the inner cavity and exposed in the inner cavity, the first recessed portion and the second recessed portion are arranged at intervals along the first direction, and the first recessed portion and the second recessed portion are configured to adjust the impedance of the signal terminal pair.

16. A terminal module, characterized in that: include: A plurality of conductive terminals, each of which includes a contact portion extending along a first direction; 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 comprising at least one terminal receiving hole, the contact portion of the first signal terminal and the contact portion of the second signal terminal being received in the terminal receiving hole; as well as A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulator; the metal shielding surrounding member comprises 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 comprises 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 two first protrusions protruding away from the inner cavity and exposed in the inner cavity, the at least two first protrusions are arranged at intervals along the first direction, and the at least two first protrusions are configured to adjust the impedance of the signal terminal pair.

17. 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 shell, the terminal modules are the terminal modules according to any one of claims 1 to 16, and the metal shielding surrounding parts of the terminal modules pass through the corresponding terminal receiving grooves to extend into the receiving space.

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