Backboard connector

Abstract

A backboard connector comprises a housing and a plurality of installation modules. The shell comprises a base part, and the base part is provided with a plurality of through containing grooves. And the mounting module is assembled in the accommodating groove. The installation module comprises an insulation body, a terminal module installed in the insulation body, and a metal shielding surrounding member sleeved on the insulation body. The metal shielding surrounding piece comprises a cylinder body part and a mounting part extending downwards from the cylinder body part, the cylinder body part is enclosed by four side walls to form a full-wrapping type shielding cavity, and the mounting part is also enclosed by four side walls to form a full-wrapping type shielding cavity. According to the backboard connector, the shielding effect and the grounding backflow effect are improved.

Description

[0001] This application claims the priority of Chinese patent application with application date of July 25, 2023, application number 202310915790.5, and invention name “Backplane Connector”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The invention relates to a backplane connector, belonging to the technical field of connectors. Background Art

[0003] Existing backplane connectors usually include a housing and a plurality of terminal modules mounted on the housing. Each terminal module includes an insulating block, a plurality of conductive terminals fixed in the insulating block, and a metal shielding surround arranged on the periphery of the insulating block. The conductive terminal includes a contact portion for mating with a docking connector and a mounting foot for connecting to a circuit board. In order to enable the mounting feet of the terminal module to maintain a positional relationship with each other so as to facilitate its installation on the circuit board, some existing backplane connectors are also provided with a retaining block mounted on the bottom of the terminal module. The retaining block is usually made of insulating material and is provided with a plurality of mounting holes for the mounting feet of the conductive terminals to pass through.

[0004] The metal shielding surrounding member in the related art includes a cylindrical body and a mounting portion extending downward from the cylindrical body, and the mounting portion is generally U-shaped. The cylindrical body includes a first side wall, a second side wall opposite to the first side wall, a third side wall connecting one end of the first side wall and one end of the second side wall, and a fourth side wall connecting the other end of the first side wall and the other end of the second side wall; the mounting portion includes a fifth side wall located on the same side as the first side wall, a sixth side wall located on the same side as the third side wall, and a seventh side wall located on the same side as the fourth side wall. The fifth side wall is connected to the first side wall, the sixth side wall is located on the outside of the third side wall and disconnected from the third side wall, and the seventh side wall is located on the outside of the fourth side wall and disconnected from the seventh side wall.

[0005] When the backplane connector is docked with the docking backplane connector, the ground return can only be realized through the first side wall and the fifth side wall connected thereto. In other words, since the sixth side wall is disconnected from the third side wall and the seventh side wall is disconnected from the fourth side wall, the ground return cannot be realized directly through the third side wall and the sixth side wall, nor can it be realized directly through the fourth side wall and the seventh side wall.

[0006] Therefore, it is necessary to improve the metal shielding surrounding member in the related art to improve the shielding and ground return effects. Summary of the invention

[0007] The object of the present invention is to provide a backplane connector with better shielding and ground return effects.

[0008] To achieve the above object, the present invention adopts the following technical solution: a backplane connector, comprising:

[0009] A housing, the housing comprising a base, a first side wall extending upward from one end of the base, and a second side wall extending upward from the other opposite end of the base, the base, the first side wall and the second side wall together forming a receiving space for at least partially receiving a docking connector; the base is provided with a plurality of receiving grooves penetrating the base; and

[0010] A plurality of mounting modules, the mounting modules are assembled in the receiving grooves, the mounting modules include an insulating body, a terminal module mounted in the insulating body, and a metal shielding surrounding member sleeved on the insulating body;

[0011] The metal shielding surrounding member includes a cylindrical portion and a mounting portion extending downward from the cylindrical portion, the cylindrical portion includes a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, wherein the first side wall is arranged opposite to the third side wall, the second side wall is arranged opposite to the fourth side wall, and the first side wall, the second side wall, the third side wall and the fourth side wall form a fully enclosed shielding cavity;

[0012] The mounting portion includes a fifth side wall, a sixth side wall, a seventh side wall and an eighth side wall connected in sequence, wherein the fifth side wall is arranged opposite to the seventh side wall, the sixth side wall is arranged opposite to the eighth side wall, and the fifth side wall, the sixth side wall, the seventh side wall and the eighth side wall form a fully enclosed shielding cavity;

[0013] The fifth side wall is connected to the first side wall and is located on the same side of the metal shielding surrounding member; the sixth side wall is connected to the second side wall and is located on the same side of the metal shielding surrounding member; the seventh side wall is connected to the third side wall and is located on the same side of the metal shielding surrounding member; the eighth side wall is connected to the fourth side wall and is located on the same side of the metal shielding surrounding member;

[0014] The mounting portion is clamped and fixed in the receiving groove.

[0015] As a further improved technical solution of the present invention, the sixth side wall protrudes outwardly from the second side wall; and the eighth side wall protrudes outwardly from the fourth side wall.

[0016] As a further improved technical solution of the present invention, the fifth side wall is flush with the first side wall; the seventh side wall is flush with the third side wall.

[0017] As a further improved technical solution of the present invention, the metal shielding surrounding piece includes a first positioning protrusion located between the sixth side wall and the second side wall and a second positioning protrusion located between the eighth side wall and the fourth side wall;

[0018] The receiving groove includes a main groove located in the middle, a first groove located on one side of the main groove, and a second groove located on the other side of the main groove; the mounting portion is clamped in the main groove, the first positioning protrusion is clamped in the first groove, and the second positioning protrusion is clamped in the second groove.

[0019] As a further improved technical solution of the present invention, the first groove is an arc-shaped groove and is recessed in a direction away from the second groove; the second groove is an arc-shaped groove and is recessed in a direction away from the first groove; the base is provided with a first supporting surface located at the bottom of the first groove and a second supporting surface located at the bottom of the second groove;

[0020] The first positioning protrusion is pressed against the first supporting surface, and the second positioning protrusion is pressed against the second supporting surface.

[0021] As a further improved technical solution of the present invention, the main body groove is provided with a first arcuate surface, a second arcuate surface, a third arcuate surface and a fourth arcuate surface located at its four corners, wherein the first groove is located in the middle of the first arcuate surface and the third arcuate surface; the second groove is located in the middle of the second arcuate surface and the fourth arcuate surface.

[0022] As a further improved technical solution of the present invention, the metal shielding enclosure also includes a plurality of mounting feet extending from the mounting portion; the backplane connector also includes a retaining block installed on the bottom of the shell, the retaining block being provided with a positioning groove for positioning the mounting portion; the plurality of mounting feet pass through the retaining block.

[0023] As a further improved technical solution of the present invention, the terminal module includes a first signal terminal, a second signal terminal and an insulating block fixed on the first signal terminal and the second signal terminal;

[0024] The insulating body includes a base portion, and the base portion is provided with a first terminal receiving hole and a second terminal receiving hole; the first signal terminal and the second signal terminal are respectively received in the first terminal receiving hole and the second terminal receiving hole.

[0025] As a further improved technical solution of the present invention, the base portion is in contact with the insulating block.

[0026] As a further improved technical solution of the present invention, the insulating body includes a first extension block extending upward from one side of the base portion and a second extension block extending upward from the other side of the base portion;

[0027] The first extension block is provided with a first side surface on the outer side and a first positioning groove recessed inwardly from the first side surface; the second extension block is provided with a second side surface on the outer side and a second positioning groove recessed inwardly from the second side surface;

[0028] The second side wall is provided with a first convex bump which protrudes inwards and is clamped in the first positioning groove; the fourth side wall is provided with a second convex bump which protrudes inwards and is clamped in the second positioning groove.

[0029] As a further improved technical solution of the present invention, the first positioning groove does not penetrate inwardly through the first extension block, and the second positioning groove does not penetrate inwardly through the second extension block.

[0030] As a further improved technical solution of the present invention, the first positioning groove passes through the top surface of the first extension block upwards, and the second positioning groove passes through the top surface of the second extension block upwards.

[0031] As a further improved technical solution of the present invention, the base portion includes an upper surface and a lower surface, the first terminal receiving hole and the second terminal receiving hole both penetrate the upper surface, and the first extension block and the second extension block both extend upward and protrude from the upper surface.

[0032] Compared with the prior art, the metal shielding enclosure of the present invention includes a cylindrical portion and an installation portion extending downward from the cylindrical portion, and the cylindrical portion and the installation portion are both surrounded by four side walls to form a fully enclosed shielding cavity, thereby improving the shielding effect; in addition, the fifth side wall is connected to the first side wall and is located on the same side of the metal shielding enclosure; the sixth side wall is connected to the second side wall and is located on the same side of the metal shielding enclosure; the seventh side wall is connected to the third side wall and is located on the same side of the metal shielding enclosure; the eighth side wall is connected to the fourth side wall and is located on the same side of the metal shielding enclosure; in this way, the fifth side wall and the first side wall can form a ground return; the sixth side wall and the second side wall can form a ground return; the seventh side wall and the third side wall can form a ground return; the eighth side wall and the fourth side wall can form a ground return; thereby improving the ground return effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional schematic diagram of a backplane connector assembly of the present invention in one embodiment.

[0034] Figure 2 yes Figure 1 Partial exploded view of the .

[0035] Figure 3 yes Figure 2 Another view of the second backplane connector when installed on the second circuit board.

[0036] Figure 4 yes Figure 3 A three-dimensional exploded view of the second backplane connector and the second circuit board.

[0037] Figure 5 yes Figure 3 A front view of the second backplane connector.

[0038] Figure 6 yes Figure 5 Rear view of.

[0039] Figure 7 yes Figure 5 Top view of the .

[0040] Figure 8 yes Figure 7 A partial enlarged view of the middle frame portion A.

[0041] Fig. 9 yes Figure 5 Bottom view of .

[0042] Fig.10 yes Figure 4 A partial exploded perspective view of the second backplane connector.

[0043] Fig.11 yes Fig.10 Partial exploded perspective view from another angle.

[0044] Fig.12 yes Fig.10 A partial enlarged view of the circled portion B.

[0045] Fig.13 yes Fig.11 A partial enlarged view of the circled portion C.

[0046] Fig.14 yes Fig.10 A partial exploded view of a terminal module.

[0047] Fig.15 yes Fig.14 Partial three-dimensional exploded view from another angle.

[0048] Fig.16 yes Fig.14 A three-dimensional exploded view of the insulating body and terminal module.

[0049] Fig.17 yes Fig.16 Exploded three-dimensional image from another angle.

[0050] Fig.18 yes Fig.16 A three-dimensional exploded view from another angle.

[0051] Fig.19 yes Fig.16 The main view of the terminal module.

[0052] Fig. 20 yes Fig.19 Rear view of.

[0053] Fig.21 is along Figure 3 Schematic diagram of the cross section of the DD line.

[0054] Fig. 22 yes Fig.21 A partial enlarged view of the middle frame portion E. DETAILED DESCRIPTION

[0055] 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 only examples of devices, products and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0056] 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.

[0057] 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 explanation 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.

[0058] Please refer to Figure 1 and Figure 2 As shown, an embodiment of the present invention discloses a backplane connector assembly, which includes a first backplane connector 100, a second backplane connector 200' mating with the first backplane connector 100, a first circuit board 301 installed together with the first backplane connector 100, and a second circuit board 302 installed together with the second backplane connector 200'. In the illustrated embodiment of the present invention, the first backplane connector 100 and the second backplane connector 200' are plugged in an orthogonal manner, and the first circuit board 301 is perpendicular to the second circuit board 302.

[0059] Please refer to Figures 3 to 22 As shown, the second backplane connector 200' comprises a housing 21', a plurality of mounting modules 25' mounted in the housing 21', and a retaining block 24' mounted on the housing 21'. Each mounting module 25' comprises an insulating body 26', a terminal module 22' mounted in the insulating body 26', and a metal shielding surrounding member 23' sleeved on the insulating body 26'.

[0060] Please refer to Fig.10 as well as Fig.11 As shown, the housing 21' is made of insulating material, and includes a base 210', a first side wall 211' extending upward from one end of the base 210', and a second side wall 212' extending upward from the other opposite end of the base 210'. The base 210', the first side wall 211' and the second side wall 212' together form a receiving space 213' for receiving part of the first backplane connector 100. In the illustrated embodiment of the present invention, the first side wall 211' and the second side wall 212' are parallel to each other and perpendicular to the base 210'.

[0061] In the illustrated embodiment of the present invention, the base 210' is provided with a top surface 2101' exposed in the receiving space 213', a bottom surface 2102' opposite to the top surface 2101', two mounting protrusions 2103' protruding downward from both sides of the bottom surface 2102', and a receiving groove 2100' located between the two mounting protrusions 2103'. The receiving groove 2100' is used to receive the holding block 24'.

[0062] Please combine Figures 10 to 13 As shown, the base 210' is further provided with a plurality of receiving grooves 2108' penetrating the top surface 2101' and the bottom surface 2102'. The plurality of receiving grooves 2108' are arranged in a plurality of rows along the front-to-back direction, and the receiving grooves 2108' in two adjacent rows are arranged in a staggered manner, that is, the receiving grooves 2108' at the same position in two adjacent rows are not aligned along the front-to-back direction. In the illustrated embodiment of the present invention, each receiving groove 2108' includes a main body groove 2108a' located in the middle, a first groove 2108b' located on one side of the main body groove 2108a', and a second groove 2108c' located on the other side of the main body groove 2108a'. In the illustrated embodiment of the present invention, the first groove 2108b' is an arc-shaped groove and is recessed in a direction away from the second groove 2108c'; the second groove 2108c' is an arc-shaped groove and is recessed in a direction away from the first groove 2108b'; the main body groove 2108a' is provided with a first arc-shaped surface 2108a1', a second arc-shaped surface 2108a2', a third arc-shaped surface 2108a3' and a fourth arc-shaped surface 2108a4' located at its four corners, wherein the first groove 2108b' is located in the middle of the first arc-shaped surface 2108a1' and the third arc-shaped surface 2108a3'; the second groove 2108c' is located in the middle of the second arc-shaped surface 2108a2' and the fourth arc-shaped surface 2108a4'; so as to maintain the symmetry of the receiving groove 2108'. In the illustrated embodiment of the present invention, both the first groove 2108b' and the second groove 2108c' penetrate the top surface 2101' upwardly, but neither the first groove 2108b' nor the second groove 2108c' penetrates the bottom surface 2102' downwardly. The base 210' is provided with a first supporting surface 2108b1' located at the bottom of the first groove 2108b' and a second supporting surface 2108c1' located at the bottom of the second groove 2108c'.

[0063] Please refer to Fig.10As shown, the first side wall 211' is provided with a first top surface 2111', a first inner side surface 2112', a plurality of first protrusions 2113' protruding inwardly from the first inner side surface 2112' into the receiving space 213', and a first positioning groove 2114' located between two adjacent first protrusions 2113'. In the illustrated embodiment of the present invention, the first positioning groove 2114' is a dovetail groove, which is provided with two inclined surfaces arranged opposite to each other, so that the width of the first positioning groove 2114' close to the first inner side surface 2112 is greater than the width of the first positioning groove 2114' away from the first inner side surface 2112'. In addition, the first top surface 2111' is provided with a first guiding inclined surface 2111a' inclined toward the receiving space 213' and a notch 2111b' penetrating upwardly through the first top surface 2111'. The notch 2111b' can play an identification role to prevent the first backplane connector 100 from being plugged in at a wrong angle. The first guiding slope 2111a' further extends to the tops of the plurality of first protrusions 2113'.

[0064] Please refer to Fig.11 As shown, the second side wall 212' is provided with a second top surface 2121', a second inner side surface 2122', a plurality of second protrusions 2123' protruding inwardly from the second inner side surface 2122' into the receiving space 213', and a second positioning groove 2124' located between two adjacent second protrusions 2123'. In the illustrated embodiment of the present invention, the second positioning groove 2124' is a dovetail groove, which is provided with two inclined surfaces arranged opposite to each other, so that the width of the second positioning groove 2124' close to the second inner side surface 2122' is greater than the width of the second positioning groove 2124' away from the second inner side surface 2122'. In addition, the second top surface 2121' is provided with a second guiding inclined surface 2121a' inclined toward the direction of the receiving space 213'. The second guiding inclined surface 2121a' further extends to the tops of the plurality of second protrusions 2123'. The first guiding inclined surface 2111a' and the second guiding inclined surface 2121a' are used to guide the first backplane connector 100 to be inserted into the receiving space 213'. In the illustrated embodiment of the present invention, the first protrusion 2113' and the second protrusion 2123' are symmetrically arranged on both sides of the housing 21', and the first positioning groove 2114' and the second positioning groove 2124' are also symmetrically arranged on both sides of the housing 21'.

[0065] Please combine Figures 16 to 18As shown, the insulating body 26' includes a base 260', a first extension block 261' extending upward from one side of the base 260', and a second extension block 262' extending upward from the other side of the base 260'. The base 260' includes an upper surface 2601', a lower surface 2602', a terminal receiving hole penetrating upwardly through the upper surface 2601', and a receiving space 2603' penetrating downwardly through the lower surface 2602'. The first extension block 261' and the second extension block 262' both extend upwardly and protrude from the upper surface 2601'. The insulating body 26' also includes an accommodating space 263' located between the first extension block 261' and the second extension block 262'. In the illustrated embodiment of the present invention, the terminal receiving hole includes a first terminal receiving hole 2143' and a second terminal receiving hole 2144' arranged in parallel. The first terminal receiving hole 2143' and the second terminal receiving hole 2144' are both square holes. The base portion 260 ′ further defines a partition portion 2145 ′ for separating the first terminal receiving hole 2143 ′ from the second terminal receiving hole 2144 ′.

[0066] In the illustrated embodiment of the present invention, the first extension block 261' and the second extension block 262' are both integrally formed with the base portion 260'. The first extension block 261' is provided with an outer first side surface 2611' and a first positioning groove 2612' recessed inwardly from the first side surface 2611'. The second extension block 262' is provided with an outer second side surface 2621' and a second positioning groove 2622' recessed inwardly from the second side surface 2621'. In the illustrated embodiment of the present invention, the first positioning groove 2612' penetrates upwardly through the top surface of the first extension block 261', and the second positioning groove 2622' penetrates upwardly through the top surface of the second extension block 262'. In the illustrated embodiment of the present invention, the first positioning groove 2612' does not penetrate the first extension block 261' inwardly, and the second positioning groove 2622' does not penetrate the second extension block 262' inwardly; such a configuration is beneficial to improving the structural strength of the insulating body 26' on the one hand; on the other hand, it avoids the metal shielding surround 23' from extending from the first positioning groove 2612' and the second positioning groove 2622' into the space between the first extension block 261' and the second extension block 262', thereby reducing the risk of the metal shielding surround 23' contacting the signal terminal and causing a short circuit.

[0067] Please refer to Fig.19 and Fig. 20As shown, each terminal module 22' includes a first signal terminal 221', a second signal terminal 222', and an insulating block 223' fixed on the first signal terminal 221' and the second signal terminal 222'. In one embodiment of the present invention, the first signal terminal 221' and the second signal terminal 222' are embedded in the insulating block 223'. In one embodiment of the present invention, the first signal terminal 221' and the second signal terminal 222' form a group of differential signal terminals. In the illustrated embodiment of the present invention, the first signal terminal 221' and the second signal terminal 222' are symmetrically arranged along the central axis of the insulating block 223'.

[0068] Structurally, the first signal terminal 221' includes a first fixing portion 221a' fixed to the insulating block 223', a first contact portion 221b' extending upward from the first fixing portion 221a', and a first mounting foot 221c' extending downward from the first fixing portion 221a'. The first mounting foot 221c' is provided with a first fisheye hole 221c1', so that the first mounting foot 221c' has a certain elasticity, so that it is easy to press into the conductive hole of the second circuit board 302' to achieve electrical conduction. The first contact portion 221b' is a two-half structure, which includes a first contact piece 221b1', a second contact piece 221b2', and a first plug hole 2210' located between the first contact piece 221b1' and the second contact piece 221b2'. The first contact piece 221b1' and the second contact piece 221b2' are separated by two first slots 221b3', so that the first contact portion 221b' has good elasticity, and the reliability when mating with the terminal of the docking connector is improved. In addition, the first contact piece 221b1' is also provided with a first flared portion 221b4' at its end, and the second contact piece 221b2' is also provided with a second flared portion 221b5' at its end, and the first flared portion 221b4' and the second flared portion 221b5' form a first bell mouth 221b6' connected to the first jack 2210', for guiding the terminal of the docking connector to be inserted.

[0069] The second signal terminal 222' includes a second fixing portion 222a' fixed to the insulating block 223', a second contact portion 222b' extending upward from the second fixing portion 222a', and a second mounting foot 222c' extending downward from the second fixing portion 222a'. The second mounting foot 222c' is provided with a second fisheye hole 222c1', so that the second mounting foot 222c' has a certain elasticity, so that it is easy to press into the conductive hole of the second circuit board 302' to achieve electrical conduction. The second contact portion 222b' is a two-half structure, which includes a third contact piece 222b1', a fourth contact piece 222b2', and a second plug hole 2220' located between the third contact piece 222b1' and the fourth contact piece 222b2'. The third contact piece 222b1' and the fourth contact piece 222b2' are separated by two second slots 222b3', so that the second contact portion 222b' has good elasticity, and improves the reliability when mating with the terminal of the docking connector. In addition, the third contact piece 222b1' is also provided with a third flared portion 222b4' located at the end thereof, and the fourth contact piece 222b2' is also provided with a fourth flared portion 222b5' located at the end thereof, and the third flared portion 222b4' and the fourth flared portion 222b5' form a second bell mouth 222b6' connected to the second jack 2220', for guiding the terminal of the docking connector to be inserted.

[0070] When the signal terminal of the first backplane connector 100 is in the process of being separated from the first contact portion 221b' of the first signal terminal 221' and the second contact portion 222b' of the second signal terminal 222' of the second backplane connector 200', the signal terminal of the first backplane connector 100 will pass through the first extension block 261' and the second extension block 262' from bottom to top in the up-down direction. At this time, the first extension block 261' and the second extension block 262' 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.

[0071] In the illustrated embodiment of the present invention, the insulating block 223' is generally in an I-shape, and includes a top portion 2231', a bottom portion 2232', and a connecting portion 2233' connecting the top portion 2231' and the bottom portion 2232'. The top portion 2231' is provided with a top surface 2231a', and the length of the top portion 2231' is less than the length of the bottom portion 2232'. The insulating block 223' also includes a first opening 2234' and a second opening 2235' located between the top portion 2231' and the bottom portion 2232', wherein the first opening 2234' and the second opening 2235' are located on both sides of the connecting portion 2233', respectively. The first fixing portion 221a' of the first signal terminal 221' is partially exposed in the first opening 2234', and the second fixing portion 222a' of the second signal terminal 222' is partially exposed in the second opening 2235', so as to adjust the impedance. The bottom end 2232' is provided with a bottom surface 2232a', two protrusions 2232b' protruding downward from the bottom surface 2232a', and a positioning groove 2232c' located between the two protrusions 2232b'. The two protrusions 2232b' are respectively abutted against the bottom end of the first fixing portion 221a' and the bottom end of the second fixing portion 222a'. The outer circumferential surface of the insulating block 223' is also provided with a plurality of convex strips 2236', and the outer surface of the convex strips 2236' is semicircular. In the illustrated embodiment of the present invention, the convex strips 2236' are located at the middle position of the two sides of the top end 2231' and at the middle position of the front end surface of the connecting portion 2233'. Of course, in other embodiments, the convex strips 2236' can also be arranged on both sides of the bottom end 2232' and / or the front end surface of the bottom end 2232'. The convex strips 2236' are used to abut against the insulating body 26' to improve the installation reliability.

[0072] Please refer to Fig.14 , Fig.15 as well as Fig. 22As shown, in the illustrated embodiment of the present invention, the metal shielding surrounding member 23' is formed by stamping, bending and riveting a metal plate, and includes a barrel portion 231', a mounting portion 232' extending downward from the barrel portion 231', a plurality of mounting feet 233' extending downward from the mounting portion 232', and a positioning protrusion located between the barrel portion 231' and the mounting portion 232'. The barrel portion 231' includes a first side wall 2311', a second side wall 2312', a third side wall 2313' and a fourth side wall 2314' connected in sequence, wherein the first side wall 2311' is opposite to the third side wall 2313', and the second side wall 2312' is opposite to the fourth side wall 2314', so as to enclose a fully enclosed shielding cavity. The metal shielding surrounding member 23' includes an inner cavity 230' surrounded by the first side wall 2311', the second side wall 2312', the third side wall 2313' and the fourth side wall 2314'. In the illustrated embodiment of the present invention, the area of ​​the first side wall 2311' and the third side wall 2313' is greater than the area of ​​the second side wall 2312' and the fourth side wall 2314'. The ends of the first side wall 2311', the second side wall 2312', the third side wall 2313' and the fourth side wall 2314' are all provided with inwardly bent deflection parts 2315', and these deflection parts 2315' are independent of each other so as to bend independently and avoid mutual interference. Each deflection part 2315' is provided with a guide part 2315a' located on its outer surface. By providing the deflection portion 2315', a contraction opening can be formed at the end of the metal shield surrounding member 23', and the deflection portion 2315' can be easily guided and inserted into the first backplane connector 100 by the guide portion 2315a'. In the illustrated embodiment of the present invention, the first side wall 2311' includes a first wall portion 2311a' and a second wall portion 2311b', wherein the first wall portion 2311a' and the second wall portion 2311b' are fixed together by riveting. A rivet line 2311c' is formed at the junction of the first wall portion 2311a' and the second wall portion 2311b'. In other embodiments of the present invention, the inwardly bent deflection portion 2315' can also be provided at the ends of at least three of the connected first side wall 2311', the second side wall 2312', the third side wall 2313' and the fourth side wall 2314'. For example, a deflecting portion 2315 ′ bent inwardly is provided at the ends of the second side wall 2312 ′, the third side wall 2313 ′ and the fourth side wall 2314 ′ which are connected in sequence.

[0073] In the illustrated embodiment of the present invention, the first wall portion 2311a' includes a first inverted piece 2361' formed by bending from the port portion 235' into the inner cavity 230', and the first inverted piece 2361' at least partially abuts against the inner wall surface of the first wall portion 2311a'. Similarly, the second wall portion 2311b' includes a second inverted piece 2362' formed by bending from the port portion 235' into the inner cavity 230', and the second inverted piece 2362' at least partially abuts against the inner wall surface of the second wall portion 2311b'. The third side wall 2313' includes a third inverted piece 2363' formed by bending from the port portion 235' into the inner cavity 230', and the third inverted piece 2363' at least partially abuts against the inner wall surface of the third side wall 2313'. The first inverted piece 2361', the second inverted piece 2362' and the third inverted piece 2363' are all at least partially protruded into the accommodating space 263' of the insulating body 26'.

[0074] In the illustrated embodiment of the present invention, the mounting portion 232' includes a fifth side wall 232a', a sixth side wall 232b', a seventh side wall 232c' and an eighth side wall 232d' connected in sequence, wherein the fifth side wall 232a' is opposite to the seventh side wall 232c', and the sixth side wall 232b' is opposite to the eighth side wall 232d', so as to enclose a fully enclosed shielding cavity. In the illustrated embodiment of the present invention, the area of ​​the fifth side wall 232a' and the seventh side wall 232c' is greater than the area of ​​the sixth side wall 232b' and the eighth side wall 232d'.

[0075] The fifth side wall 232a' and the first side wall 2311' are located on the same side of the metal shielding enclosure 23', the sixth side wall 232b' and the second side wall 2312' are located on the same side of the metal shielding enclosure 23', the seventh side wall 232c' and the third side wall 2313' are located on the same side of the metal shielding enclosure 23', and the eighth side wall 232d' and the fourth side wall 2314' are located on the same side of the metal shielding enclosure 23'.

[0076] In the illustrated embodiment of the present invention, the fifth side wall 232a' and the first side wall 2311' are located in the same plane, that is, the fifth side wall 232a' is flush with the first side wall 2311'; the seventh side wall 232c' and the third side wall 2313' are located in the same plane, that is, the seventh side wall 232c' is flush with the third side wall 2313'. Fig. 22As shown, the sixth side wall 232b' protrudes outward from the second side wall 2312'; the eighth side wall 232d' protrudes outward from the fourth side wall 2314'. The positioning protrusions include a first positioning protrusion 2341' located between the sixth side wall 232b' and the second side wall 2312' and a second positioning protrusion 2342' located between the eighth side wall 232d' and the fourth side wall 2314'. The first positioning protrusion 2341' is in an arc shape and protrudes outward from the seventh side wall 232c' and the third side wall 2313'. The second positioning protrusion 2342' is in an arc shape and protrudes outward from the eighth side wall 232d' and the fourth side wall 2314'.

[0077] In the illustrated embodiment of the present invention, the second side wall 2312' is further provided with a first convex bump 2312a' punched inwardly and retained in the first positioning groove 2612'; the fourth side wall 2314' is further provided with a second convex bump 2314a' punched inwardly and retained in the second positioning groove 2622'.

[0078] The plurality of mounting legs 233 ′ are integrally extended downward from the sixth side wall 232 b ′ and the eighth side wall 232 d ′ respectively.

[0079] Please refer to Fig.11 As shown, the holding block 24' is used to position and limit the mounting portion 232' of the metal shielding surrounding member 23'. Specifically, the holding block 24' includes a plurality of mounting bars 241' arranged in a staggered manner and connected as a whole, wherein each mounting bar 241' is provided with a positioning groove 242' for positioning the mounting portion 232'.

[0080] During assembly, the terminal module 22' is first assembled with the insulating body 26', wherein the insulating block 223' is at least partially accommodated in the accommodating space 2603'; then, the metal shielding surrounding member 23' is sleeved on the insulating body 26' to form the mounting module 25'; then, the mounting module 25' is installed in the receiving groove 2108' of the housing 21' from top to bottom, wherein the mounting portion 232' is clamped in the main body groove 2108a', and the four arc-shaped corners of the mounting portion 232' correspond to the first arc-shaped surface 2108a1', the second arc-shaped surface 2108a2', the third arc-shaped surface 2108a3', and the fourth arc-shaped corners of the mounting portion 232' correspond to the first arc-shaped surface 2108a1', the second arc-shaped surface 2108a2', and the third arc-shaped surface 2108a4'. 8a3' and the fourth arc surface 2108a4' to balance the distribution of force and avoid installation tilt; the first positioning protrusion 2341' and the second positioning protrusion 2342' are respectively clamped in the first groove 2108b' and the second groove 2108c', and the first positioning protrusion 2341' and the second positioning protrusion 2342' are respectively abutted against the first supporting surface 2108b1' and the second supporting surface 2108c1' to play the role of positioning and limiting; finally, the holding block 24' is installed in the receiving groove 2100' from bottom to top to fix the mounting portion 232' of the metal shielding surrounding member 23'. At this time, the mounting foot 233' of the metal shielding surrounding member 23', the first mounting foot 221c' of the first signal terminal 221' and the second mounting foot 222c' of the second signal terminal 222' pass through the holding block 24' to be electrically connected with the second circuit board 302.

[0081] When the first backplane connector 100 is mated with the second backplane connector 200', the first backplane connector 100 is partially inserted into the receiving space 213' of the shell 21' of the second backplane connector 200', and the cylindrical portion 231' of the terminal module 22' of the second backplane connector 200' is inserted into the first backplane connector 100 under the guidance of the deflection portion 2315'.

[0082] Compared with the prior art, the metal shielding surrounding member 23' of the present invention includes a barrel portion 231' and a mounting portion 232' extending downward from the barrel portion 231', and the barrel portion 231' and the mounting portion 232' are both surrounded by four side walls to form a fully enclosed shielding cavity, thereby improving the shielding effect; in addition, the fifth side wall 232a' is connected to the first side wall 2311' and is located on the same side of the metal shielding surrounding member 23'; the sixth side wall 232b' is connected to the second side wall 2312' and is located on the same side of the metal shielding surrounding member 23'; the seventh side wall 232c' is connected to the third side wall 2 313' is connected to and is located on the same side of the metal shielding enclosure 23'; the eighth side wall 232d' is connected to the fourth side wall 2314' and is located on the same side of the metal shielding enclosure 23'; with this arrangement, the fifth side wall 232a' and the first side wall 2311' can form a ground return; the sixth side wall 232b' and the second side wall 2313' can form a ground return; the seventh side wall 232c' and the third side wall 2313' can form a ground return; the eighth side wall 232d' and the fourth side wall 2314' can form a ground return; thereby improving the ground return effect.

[0083] 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, the ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A backplane connector, characterized in that: include: A housing, the housing comprising a base, a first side wall extending upward from one end of the base, and a second side wall extending upward from the other opposite end of the base, the base, the first side wall and the second side wall together forming a receiving space for at least partially receiving the docking connector; the base is provided with a plurality of receiving grooves penetrating the base; as well as A plurality of mounting modules, the mounting modules are assembled in the receiving grooves, the mounting modules include an insulating body, a terminal module mounted in the insulating body, and a metal shielding surrounding member sleeved on the insulating body; The metal shielding surrounding member includes a cylindrical portion and a mounting portion extending downward from the cylindrical portion, the cylindrical portion includes a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, wherein the first side wall is arranged opposite to the third side wall, the second side wall is arranged opposite to the fourth side wall, and the first side wall, the second side wall, the third side wall and the fourth side wall form a fully enclosed shielding cavity; The mounting portion includes a fifth side wall, a sixth side wall, a seventh side wall and an eighth side wall connected in sequence, wherein the fifth side wall is arranged opposite to the seventh side wall, the sixth side wall is arranged opposite to the eighth side wall, and the fifth side wall, the sixth side wall, the seventh side wall and the eighth side wall form a fully enclosed shielding cavity; The fifth side wall is connected to the first side wall and is located on the same side of the metal shielding surround; The sixth side wall is connected to the second side wall and is located on the same side of the metal shielding surrounding member; the seventh side wall is connected to the third side wall and is located on the same side of the metal shielding surrounding member; The eighth side wall and the fourth side wall are located on the same side where the metal shielding surrounding member is connected; The mounting portion is clamped and fixed in the receiving groove.

2. The backplane connector according to claim 1, wherein: The sixth side wall protrudes outward from the second side wall; the eighth side wall protrudes outward from the fourth side wall.

3. The backplane connector according to claim 2, wherein: The fifth side wall is flush with the first side wall; the seventh side wall is flush with the third side wall.

4. The backplane connector according to claim 2, wherein: The metal shield surround includes a first positioning protrusion located between the sixth side wall and the second side wall and a second positioning protrusion located between the eighth side wall and the fourth side wall; The receiving groove includes a main groove located in the middle, a first groove located on one side of the main groove, and a second groove located on the other side of the main groove; the mounting portion is clamped in the main groove, the first positioning protrusion is clamped in the first groove, and the second positioning protrusion is clamped in the second groove.

5. The backplane connector according to claim 4, wherein: The first groove is an arc-shaped groove and is recessed in a direction away from the second groove; the second groove is an arc-shaped groove and is recessed in a direction away from the first groove; the base is provided with a first supporting surface located at the bottom of the first groove and a second supporting surface located at the bottom of the second groove; The first positioning protrusion is pressed against the first supporting surface, and the second positioning protrusion is pressed against the second supporting surface.

6. The backplane connector according to claim 4, wherein: The main body groove is provided with a first arc surface, a second arc surface, a third arc surface and a fourth arc surface located at its four corners, wherein the first groove is located in the middle of the first arc surface and the third arc surface; the second groove is located in the middle of the second arc surface and the fourth arc surface.

7. The backplane connector according to claim 1, wherein: The metal shielding surrounding member also includes a plurality of mounting feet extending from the mounting portion; the backplane connector also includes a retaining block mounted on the bottom of the shell, the retaining block being provided with a positioning groove for positioning the mounting portion; the plurality of mounting feet pass through the retaining block.

8. The backplane connector according to claim 1, wherein: The terminal module includes a first signal terminal, a second signal terminal, and an insulating block fixed on the first signal terminal and the second signal terminal; The insulating body includes a base portion, and the base portion is provided with a first terminal receiving hole and a second terminal receiving hole; the first signal terminal and the second signal terminal are respectively received in the first terminal receiving hole and the second terminal receiving hole.

9. The backplane connector according to claim 8, wherein: The base portion is in contact with the insulating block.

10. The backplane connector according to claim 8, wherein: The insulating body comprises a first extension block extending upward from one side of the base portion and a second extension block extending upward from the other side of the base portion; The first extension block is provided with a first side surface on the outer side and a first positioning groove recessed inwardly from the first side surface; the second extension block is provided with a second side surface on the outer side and a second positioning groove recessed inwardly from the second side surface; The second side wall is provided with a first convex bump which protrudes inwards and is clamped in the first positioning groove; the fourth side wall is provided with a second convex bump which protrudes inwards and is clamped in the second positioning groove.

11. The backplane connector according to claim 10, wherein: The first positioning groove does not penetrate the first extension block inwardly, and the second positioning groove does not penetrate the second extension block inwardly.

12. The backplane connector according to claim 10, wherein: The first positioning groove passes through the top surface of the first extension block upwards, and the second positioning groove passes through the top surface of the second extension block upwards.

13. The backplane connector according to claim 10, wherein: The base portion includes an upper surface and a lower surface. The first terminal receiving hole and the second terminal receiving hole both penetrate the upper surface. The first extension block and the second extension block both extend upward and protrude from the upper surface.

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