Backboard connector

Abstract

A backboard connector comprises a shell, an insulation body, a terminal module and a metal shielding surrounding piece. The shell comprises a base part, a first side wall, a second side wall and an accommodating space. And the metal shielding surrounding piece is sleeved on the insulating body. The metal shielding surrounding piece comprises a cylinder body part, the cylinder body part extends into the containing space in a protruding mode, and the cylinder body part comprises an inner cavity. And the barrel body part comprises a port part and a reverse folding sheet which is bent from the port part to the interior of the inner cavity. And at least part of the reflexed sheet extends into the inner cavity along the first direction. The reflexed sheet is configured to adjust the impedance of the signal terminal to a certain degree, so that the impedance of the signal terminal tends to be stable.

Description

[0001] This application claims the priority of a Chinese patent application with an application date of July 25, 2023, an application number of 202310915790.5, and an invention-creation title of "Backplane Connector", the entire content of which is incorporated herein by reference. Technical Field

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

[0003] Existing backplane connectors generally include a housing and a plurality of terminal modules installed in the housing. Each terminal module includes an insulating block, a plurality of conductive terminals fixed in the insulating block, and a metal shielding surround disposed around the insulating block. The conductive terminals include 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 modules to maintain their relative positional relationship for easy installation on the circuit board, some existing backplane connectors also have a holding block installed at the bottom of the terminal module. The holding block is usually made of an 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 surround in the related art includes a cylindrical body portion and a mounting portion extending downward from the cylindrical body portion. The cylindrical body portion 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.

[0005] During the process of the backplane connector and the docking connector changing from the docking state to the separated state, as the signal terminals of the backplane connector are disengaged from the signal terminals of the docking connector, the impedance of the signal terminals will change.

[0006] Therefore, it is necessary to improve the metal shielding surround in the related art to improve the impedance of the signal terminals. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a metal shielding surround and a backplane connector that are beneficial to impedance adjustment.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions: A backplane connector, which includes:

[0009] A housing, the housing includes a base portion, a first side wall extending from one end of the base portion, and a second side wall extending from the other opposite end of the base portion. The base portion, the first side wall, and the second side wall together form a receiving space for at least partially receiving a docking connector;

[0010] An insulating body, the insulating body including a terminal receiving hole;

[0011] A terminal module, the terminal module including a first signal terminal and a second signal terminal, at least a part of the first signal terminal and the second signal terminal being disposed in the terminal receiving hole; and

[0012] A metal shielding surround, the metal shielding surround being sleeved on the insulating body;

[0013] The metal shielding surround includes a cylindrical body portion, the cylindrical body portion protruding into the receiving space, the cylindrical body portion including a first side wall, a second side wall, a third side wall, and a fourth side wall, wherein the first side wall and the third side wall are oppositely disposed, the second side wall and the fourth side wall are oppositely disposed, and the first side wall, the second side wall, the third side wall, and the fourth side wall enclose an inner cavity;

[0014] The cylindrical body portion includes a port portion and a folding-back piece bent from the port portion into the inner cavity, the folding-back piece at least partially extending into the inner cavity along a first direction.

[0015] As a further improved technical solution of the present utility model, the folding-back piece includes a first folding-back piece and a second folding-back piece disposed on the first side wall, wherein both the first folding-back piece and the second folding-back piece at least partially abut against the inner wall surface of the first side wall.

[0016] As a further improved technical solution of the present utility model, the folding-back piece includes a third folding-back piece disposed on the third side wall, wherein the third folding-back piece at least partially abuts against the inner wall surface of the third side wall.

[0017] As a further improved technical solution of the present utility model, the first side wall includes a first wall portion and a second wall portion, wherein the first wall portion and the second wall portion are fixed together by riveting, and a riveting line is formed at the joint of the first wall portion and the second wall portion;

[0018] The first folding-back piece is disposed on the first wall portion, and the second folding-back piece is disposed on the second wall portion.

[0019] As a further improved technical solution of the present utility model, the width of the third folding-back piece along a second direction is greater than the width of the first folding-back piece along the second direction, and the width of the third folding-back piece along the second direction is also greater than the width of the second folding-back piece along the second direction; the second direction is perpendicular to the first direction.

[0020] As a further improved technical solution of the present utility model, the width of the first folding piece along the second direction is the same as the width of the second folding piece along the second direction;

[0021] The lengths of the first folding piece, the second folding piece, and the third folding piece along the first direction are all the same.

[0022] As a further improved technical solution of the present utility model, the base is provided with a receiving groove penetrating through the base;

[0023] The backplane connector includes an installation module assembled in the receiving groove. The installation module includes the insulating body, the terminal module, and the metal shielding surround; the insulating body is separately provided from the housing.

[0024] As a further improved technical solution of the present utility model, the metal shielding surround includes an installation part integrally extending from the cylindrical part. The installation part 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 and the seventh side wall are oppositely arranged, the sixth side wall and the eighth side wall are oppositely arranged, and the fifth side wall, the sixth side wall, the seventh side wall, and the eighth side wall enclose a fully enclosed shielding cavity;

[0025] The fifth side wall is connected to the first side wall and is on the same side of the metal shielding surround; the sixth side wall is connected to the second side wall and is on the same side of the metal shielding surround; the seventh side wall is connected to the third side wall and is on the same side of the metal shielding surround; the eighth side wall is connected to the fourth side wall and is on the same side of the metal shielding surround;

[0026] The installation part is clamped and fixed in the receiving groove.

[0027] As a further improved technical solution of the present utility model, the sixth side wall protrudes outward from the second side wall; the eighth side wall protrudes outward from the fourth side wall.

[0028] As a further improved technical solution of the present utility model, the fifth side wall is flush with the first side wall; the seventh side wall is flush with the third side wall.

[0029] As a further improved technical solution of the present utility model, the metal shielding surround includes a first positioning protrusion between the sixth side wall and the second side wall and a second positioning protrusion between the eighth side wall and the fourth side wall;

[0030] The receiving groove includes a main groove in the middle, a first groove on one side of the main groove, and a second groove 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.

[0031] As a further improved technical solution of the present utility model, the first groove is an arc groove and is recessed in a direction away from the second groove; the second groove is an arc groove and is recessed in a direction away from the first groove; the base portion is provided with a first support surface at the bottom of the first groove and a second support surface at the bottom of the second groove;

[0032] The first positioning protrusion abuts against the first support surface, and the second positioning protrusion abuts against the second support surface.

[0033] As a further improved technical solution of the present utility model, the main groove is provided with a first arc surface, a second arc surface, a third arc surface, and a fourth arc surface 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.

[0034] As a further improved technical solution of the present utility model, the metal shielding surround further includes a plurality of mounting feet extending from the mounting portion; the backplane connector further includes a holding block mounted at the bottom of the housing, and the holding block is provided with a positioning groove for positioning the mounting portion; the plurality of mounting feet pass through the holding block.

[0035] As a further improved technical solution of the present utility model, the terminal module includes an insulating block fixed on the first signal terminal and the second signal terminal;

[0036] The insulating body includes a base portion, 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 base portion is provided with a first terminal receiving hole and a second terminal receiving hole, and the terminal receiving holes include the first terminal receiving hole and the 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;

[0037] The first extension block is provided with a first side surface on the outside and a first positioning groove recessed inward from the first side surface; the second extension block is provided with a second side surface on the outside and a second positioning groove recessed inward from the second side surface;

[0038] 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.

[0039] As a further improved technical solution of the utility model, 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.

[0040] As a further improved technical solution of the utility model, 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.

[0041] As a further improved technical solution of the utility model, the insulating body and the base are integrally formed, and the base is provided with a positioning groove located outside the insulating body, and the positioning groove is U-shaped;

[0042] The metal shielding surrounding member is assembled to the shell; the metal shielding surrounding member includes a mounting portion extending downward from the cylindrical portion, the mounting portion is U-shaped, and the mounting portion includes a connecting portion, a first bending portion bent from one side of the connecting portion, and a second bending portion bent from the other opposite side of the connecting portion; the mounting portion is assembled and fixed in the positioning groove.

[0043] As a further improved technical solution of the utility model, the first side wall is provided with a first opening penetrating the first side wall; the first inverted piece is provided with a first deflection portion located at its free end, and the first deflection portion is at least partially accommodated in the first opening.

[0044] As a further improved technical solution of the utility model, 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.

[0045] Compared with the prior art, the barrel portion of the metal shielding surrounding member of the utility model includes a port portion and a folded piece bent from the port portion into the inner cavity, and the folded piece at least partially extends into the inner cavity along the first direction. The folded piece is configured to adjust the impedance of the signal terminal to a certain extent, so that when the first backplane connector changes from the plugged state to the separated state with the second backplane connector, the impedance change of the signal terminal is suppressed as much as possible, and the impedance of the signal terminal tends to be stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a three-dimensional schematic diagram of the backplane connector assembly of the utility model in the first embodiment.

[0047] Figure 2 is Figure 1 a partial exploded perspective view of

[0048] Figure 3 is Figure 2 another view when the second backplane connector in

[0049] Figure 4 is Figure 3 an exploded perspective view of the second backplane connector and the second circuit board in

[0050] Figure 5 is Figure 3 the front view of the second backplane connector in

[0051] Figure 6 is Figure 5 the rear view of

[0052] Figure 7 is Figure 5 the top view of

[0053] Figure 8 is Figure 7 a partial enlarged view of the framed part A in

[0054] Figure 9 is Figure 5 the bottom view of

[0055] Figure 10 is Figure 4 a partial exploded perspective view of the second backplane connector in

[0056] Figure 11 is Figure 10 a partial exploded perspective view from another angle

[0057] Figure 12 is Figure 10 a partial enlarged view of the circled part B in

[0058] Figure 13 is Figure 11 a partial enlarged view of the circled part C in

[0059] Figure 14 is Figure 10 a partial exploded perspective view of a terminal module in

[0060] Figure 15 is Figure 14 a partial exploded perspective view from another angle

[0061] Figure 16 is Figure 14 an exploded perspective view of the insulating body and the terminal module in

[0062] Figure 17 is Figure 16 An exploded perspective view from another angle.

[0063] Figure 18 is Figure 16 An exploded perspective view from yet another angle.

[0064] Figure 19 is Figure 16 The front view of the terminal module in

[0065] Figure 20 is Figure 19 The rear view of

[0066] Figure 21 is a schematic cross-sectional view along the Figure 3 D-D line in

[0067] Figure 22 is Figure 21 An enlarged partial view of the framed part E in

[0068] Figure 23 is a perspective schematic view in the second embodiment when the second backplane connector is mounted on the second circuit board.

[0069] Figure 24 is Figure 23 A partial exploded perspective view of

[0070] Figure 25 is Figure 24 A partial exploded perspective view from another angle.

[0071] Figure 26 is Figure 24 A further exploded perspective view of the second backplane connector in

[0072] Figure 27 is Figure 26 An exploded perspective view from another angle.

[0073] Figure 28 is Figure 26 The perspective schematic view of the metal shielding surround in

[0074] Figure 29 is Figure 27 The perspective schematic view of the metal shielding surround in

[0075] Figure 30 is Figure 29 A perspective schematic view from another angle.

[0076] Figure 31 is along the Figure 28 F-F line in

[0077] Figure 32 is the sectional perspective view along Figure 28 the H-H line in

[0078] Figure 33 is Figure 31 the left view of

[0079] Figure 34 is Figure 32 the left view of

[0080] Figure 35 is the sectional schematic view along Figure 23 the I-I line in

[0081] Figure 36 is Figure 35 the partial enlarged view of the framed part J in Specific Embodiments

[0082] The exemplary specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description involves the accompanying drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products, and / or methods consistent with some aspects of the present invention recorded in the claims of the present invention.

[0083] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The singular forms "a", "the", or "said" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0084] It should be understood that in the description and claims of the present utility model, words such as "first", "second" and similar words do not denote any order, quantity or importance, but are only used to distinguish the named features. Similarly, words such as "a" or "one" do not denote a quantity limitation, but indicate the existence of at least one. Unless otherwise indicated, words such as "front", "rear", "upper", "lower" and similar words in the present utility model are only for convenience of description and are not limited to a specific position or a spatial orientation. Words such as "comprising" or "including" are an open-ended expression, meaning that the elements appearing before "comprising" or "including" cover the elements appearing after "comprising" or "including" and their equivalents, and this does not exclude that the elements appearing before "comprising" or "including" may also include other elements. If "a number of" appears in the present utility model, its meaning refers to two or more.

[0085] Please refer Figure 1 to Figure 2 As shown, the first embodiment of the present utility model discloses a backplane connector assembly, which includes a first backplane connector 100, a second backplane connector 200' that cooperates 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 first embodiment illustrated in the present utility model, the first backplane connector 100 and the second backplane connector 200' are inserted in an orthogonal manner, and the first circuit board 301 is perpendicular to the second circuit board 302.

[0086] Please refer to Figures 3 to 22 As shown, in the first embodiment of the present utility model, the second backplane connector 200' includes a housing 21', a number of mounting modules 25' installed in the housing 21', and a holding block 24' installed on the housing 21'. Each mounting module 25' includes an insulating body 26', a terminal module 22' installed in the insulating body 26', and a metal shielding surround 23' sleeved on the insulating body 26'.

[0087] Please refer Figure 10 to Figure 11As shown, the housing 21' is made of an 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 a part of the first backplane connector 100. In the first embodiment illustrated in the present utility model, the first side wall 211' and the second side wall 212' are parallel to each other and both perpendicular to the base 210'.

[0088] In the first embodiment illustrated in the present utility model, 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 bumps 2103' respectively protruding downward from both sides of the bottom surface 2102', and a receiving groove 2100' located between the two mounting bumps 2103'. The receiving groove 2100' is used for receiving the holding block 24'.

[0089] Please refer to Figures 10 to 13As shown, the base 210' is further provided with a plurality of receiving grooves 2108' penetrating through the top surface 2101' and the bottom surface 2102'. The plurality of receiving grooves 2108' are arranged in multiple rows along the third direction A3-A3 (e.g., the front-back direction), and the receiving grooves 2108' in adjacent two rows are arranged in a staggered manner, that is, the receiving grooves 2108' at the same position in adjacent two rows are not aligned along the third direction A3-A3. In the first embodiment illustrated in the present utility model, each receiving groove 2108' includes a main groove 2108a' located in the middle, a first groove 2108b' located on one side of the main groove 2108a', and a second groove 2108c' located on the other side of the main groove 2108a'. In the first embodiment illustrated in the present utility model, 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 groove 2108a' is provided with a first arc surface 2108a1', a second arc surface 2108a2', a third arc surface 2108a3', and a fourth arc surface 2108a4' at its four corners, wherein the first groove 2108b' is located in the middle of the first arc surface 2108a1' and the third arc surface 2108a3'; the second groove 2108c' is located in the middle of the second arc surface 2108a2' and the fourth arc surface 2108a4'; to maintain the symmetry of the receiving groove 2108'. In the first embodiment illustrated in the present utility model, both the first groove 2108b' and the second groove 2108c' penetrate through the top surface 2101' upward, but neither the first groove 2108b' nor the second groove 2108c' penetrates through the bottom surface 2102' downward. The base 210' is provided with a first support surface 2108b1' at the bottom of the first groove 2108b' and a second support surface 2108c1' at the bottom of the second groove 2108c'.

[0090] Please refer to Figure 10As shown, the first sidewall 211' is provided with a first top surface 2111', a first inner side surface 2112', a plurality of first protrusions 2113' protruding inward 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 first embodiment illustrated in the present utility model, the first positioning groove 2114' is a dovetail groove, which is provided with two inclined surfaces arranged oppositely, such that the width of the first positioning groove 2114' near 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 towards the receiving space 213' and a notch 2111b' penetrating through the first top surface 2111' upwards. The notch 2111b' can play a role in identification to prevent the first backplane connector 100 from being inserted at the wrong angle. The first guiding inclined surface 2111a' further extends to the tops of the plurality of first protrusions 2113'.

[0091] Please refer to Figure 11 As shown, the second sidewall 212' is provided with a second top surface 2121', a second inner side surface 2122', a plurality of second protrusions 2123' protruding inward 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 first embodiment illustrated in the present utility model, the second positioning groove 2124' is a dovetail groove, which is provided with two inclined surfaces arranged oppositely, such that the width of the second positioning groove 2124' near 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 towards 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 into the receiving space 213'. In the first embodiment illustrated in the present utility model, the first protrusions 2113' and the second protrusions 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'.

[0092] Please combine with Figures 16 to 18As shown, the insulating body 26' includes a base portion 260', a first extension block 261' extending upward from one side of the base portion 260', and a second extension block 262' extending upward from the other side of the base portion 260'. The base portion 260' includes an upper surface 2601', a lower surface 2602', a terminal receiving hole penetrating upward through the upper surface 2601', and a receiving space 2603' penetrating downward through the lower surface 2602'. Both the first extension block 261' and the second extension block 262' extend upward and protrude from the upper surface 2601'. The insulating body 26' further includes a receiving space 263' located between the first extension block 261' and the second extension block 262'. In the first embodiment illustrated in the present utility model, the terminal receiving hole includes a first terminal receiving hole 2143' and a second terminal receiving hole 2144' arranged in parallel. Both the first terminal receiving hole 2143' and the second terminal receiving hole 2144' are square holes. The base portion 260' is further provided with a separating portion 2145' for separating the first terminal receiving hole 2143' from the second terminal receiving hole 2144'.

[0093] In the first embodiment illustrated in the present utility model, both the first extension block 261' and the second extension block 262' are integrally formed with the base portion 260'. The first extension block 261' has an outer first side surface 2611' and a first positioning groove 2612' recessed inward from the first side surface 2611'. The second extension block 262' has an outer second side surface 2621' and a second positioning groove 2622' recessed inward from the second side surface 2621'. In the first embodiment illustrated in the present utility model, the first positioning groove 2612' penetrates upward through the top surface of the first extension block 261', and the second positioning groove 2622' penetrates upward through the top surface of the second extension block 262'. In the first embodiment illustrated in the present utility model, the first positioning groove 2612' does not penetrate inward through the first extension block 261', and the second positioning groove 2622' does not penetrate inward through the second extension block 262'; thus arranged, on the one hand, it is beneficial to improve the structural strength of the insulating body 26'; on the other hand, it avoids the metal shielding surrounding member 23' extending into the space between the first extension block 261' and the second extension block 262' from the first positioning groove 2612' and the second positioning groove 2622', reducing the risk of short circuit caused by the contact between the metal shielding surrounding member 23' and the signal terminal.

[0094] Please refer to Figure 19 and Figure 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 an embodiment of the present invention, the first signal terminal 221' and the second signal terminal 222' are injection molded in the insulating block 223'. In an embodiment of the present invention, the first signal terminal 221' and the second signal terminal 222' form a set of differential signal terminals. In the first embodiment illustrated in 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'.

[0095] 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 leg 221c' extending downward from the first fixing portion 221a'. The first mounting leg 221c' is provided with a first fish-eye hole 221c1', making the first mounting leg 221c' have a certain elasticity, so as to facilitate pressing into the conductive hole of the second circuit board 302' to achieve electrical conduction. The first contact portion 221b' has a split structure, which includes a first contact piece 221b1', a second contact piece 221b2', and a first jack 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 better elasticity and improves the reliability when cooperating with the terminals of the docking connector. In addition, the first contact piece 221b1' is further provided with a first flared portion 221b4' at its end, and the second contact piece 221b2' is further provided with a second flared portion 221b5' at its end. The first flared portion 221b4' and the second flared portion 221b5' form a first flared opening 221b6' communicating with the first jack 2210' for guiding the insertion of the terminals of the docking connector.

[0096] 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 leg 222c’ extending downward from the second fixing portion 222a’. The second mounting leg 222c’ is provided with a second fish-eye hole 222c1’, making the second mounting leg 222c’ have a certain elasticity, so as to facilitate pressing into the conductive hole of the second circuit board 302’ to achieve electrical conduction. The second contact portion 222b’ has a split structure, which includes a third contact piece 222b1’, a fourth contact piece 222b2’, and a second jack 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 better elasticity and improves the reliability when cooperating with the terminal of the docking connector. In addition, the third contact piece 222b1’ is further provided with a third flared portion 222b4’ at its end, and the fourth contact piece 222b2’ is further provided with a fourth flared portion 222b5’ at its end. The third flared portion 222b4’ and the fourth flared portion 222b5’ form a second flared opening 222b6’ communicating with the second jack 2220’ for guiding the insertion of the terminal of the docking connector.

[0097] When the signal terminal of the first backplane connector 100 is 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 vertical direction. At this time, the first extension block 261’ and the second extension block 262’ can reduce the degree of change in the dielectric constant of the surrounding air medium caused by the signal terminal pair, so as to play an impedance adjustment role.

[0098] In the first embodiment illustrated in the present utility model, 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' further 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 respectively located on both sides of the connecting portion 2233'. A first fixing portion 221a' of the first signal terminal 221' is partially exposed in the first opening 2234', and a second fixing portion 222a' of the second signal terminal 222' is partially exposed in the second opening 2235' to adjust the impedance. The bottom portion 2232' is provided with a bottom surface 2232a', two bumps 2232b' protruding downward from the bottom surface 2232a', and a positioning groove 2232c' located between the two bumps 2232b'. The two bumps 2232b' are respectively abutted against the bottom ends of the first fixing portion 221a' and the second fixing portion 222a'. The outer peripheral surface of the insulating block 223' is further provided with a plurality of convex strips 2236', and the outer surface of the convex strips 2236' is in a semicircular arc shape. In the first embodiment illustrated in the present utility model, the convex strips 2236' are located at the middle positions on both sides of the top portion 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' may also be provided on both sides of the bottom portion 2232' and / or the front end surface of the bottom portion 2232'. The convex strips 2236' are used to abut against the insulating body 26' to improve the installation reliability.

[0099] Please refer to Figure 14 、 Figure 15 and Figure 22As shown, in the first embodiment illustrated in the present utility model, the metal shielding surrounding member 23' is formed by stamping, bending, and riveting a metal plate, and it includes a cylindrical body portion 231', a mounting portion 232' extending downward from the cylindrical body portion 231', a plurality of mounting feet 233' extending downward from the mounting portion 232', and a positioning protrusion located between the cylindrical body portion 231' and the mounting portion 232'. The cylindrical body portion 231' includes a first side wall 2311', a second side wall 2312', a third side wall 2313', and a fourth side wall 2314' that are sequentially connected, 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' to enclose a fully enclosed shielding cavity. In the first embodiment illustrated in the present utility model, 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 first embodiment illustrated in the present utility model, the areas of the first side wall 2311' and the third side wall 2313' are larger than the areas of the second side wall 2312' and the fourth side wall 2314'. In the first embodiment illustrated in the present utility model, deflection portions 2315' that are bent inward are provided at the ends of both the second side wall 2312' and the fourth side wall 2314'. These deflection portions 2315' are independent of each other to facilitate independent bending and avoid mutual interference. Each deflection portion 2315' is provided with a guiding portion 2315a' on its outer surface. In the first embodiment illustrated in the present utility model, the guiding portion 2315a' is in the shape of an arc bent inward. By providing the deflection portions 2315', a contraction opening can be formed at the end of the metal shielding surrounding member 23', and the guiding portion 2315a' can make it easy to guide and insert the deflection portions 2315' into the first backplane connector 100. In the first embodiment illustrated in the present utility model, 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 joint of the first wall portion 2311a' and the second wall portion 2311b'. In the first embodiment illustrated in the present utility model, the first wall portion 2311a' and the second wall portion 2311b' are provided with a dovetail groove 2311d' and a dovetail protrusion 2311e' that are buckled together. In other embodiments of the present utility model, deflection portions 2315' that are bent inward may also be provided only at the ends of at least three of the connected first side wall 2311', second side wall 2312', third side wall 2313', and fourth side wall 2314'.For example, at the ends of the second side wall 2312', the third side wall 2313' and the fourth side wall 2314' that are connected in sequence, there are deflection portions 2315' that are bent inward.

[0100] In the first embodiment illustrated in the present utility model, 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' that are 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' to enclose a fully enclosed shielding cavity. In the first embodiment illustrated in the present utility model, the areas of the fifth side wall 232a' and the seventh side wall 232c' are larger than the areas of the sixth side wall 232b' and the eighth side wall 232d'.

[0101] The fifth side wall 232a' and the first side wall 2311' are on the same side of the metal shielding surround 23'; the sixth side wall 232b' and the second side wall 2312' are on the same side of the metal shielding surround 23'; the seventh side wall 232c' and the third side wall 2313' are on the same side of the metal shielding surround 23'; the eighth side wall 232d' and the fourth side wall 2314' are on the same side of the metal shielding surround 23'.

[0102] In the first embodiment illustrated in the present utility model, the fifth side wall 232a' and the first side wall 2311' are 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 in the same plane, that is, the seventh side wall 232c' is flush with the third side wall 2313'. Please refer to Figure 22 As 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' between the sixth side wall 232b' and the second side wall 2312' and a second positioning protrusion 2342' between the eighth side wall 232d' and the fourth side wall 2314'. The first positioning protrusion 2341' is arc-shaped and protrudes outward from the seventh side wall 232c' and the third side wall 2313'. The second positioning protrusion 2342' is arc-shaped and protrudes outward from the eighth side wall 232d' and the fourth side wall 2314'.

[0103] In the first embodiment illustrated in the present utility model, the second side wall 2312’ further has a first convex bump 2312a’ formed by inward stamping and clamped in the first positioning groove 2612’; the fourth side wall 2314’ further has a second convex bump 2314a’ formed by inward stamping and clamped in the second positioning groove 2622’.

[0104] The plurality of mounting feet 233’ respectively extend integrally downward from the sixth side wall 232b’ and the eighth side wall 232d’.

[0105] Please refer to Figure 14 and Figure 15 As shown, in the first embodiment illustrated in the present utility model, the cylindrical body portion 231’ is provided with a port portion 235’, and the port portion 235’ is generally rectangular. The deflection portion 2315’ bends inward from both sides of the port portion 235’. The first wall portion 2311a’ includes a first folding-back piece 2361’ bent inward from the port portion 235’ into the inner cavity body 230’, and the first folding-back 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 folding-back piece 2362’ bent inward from the port portion 235’ into the inner cavity body 230’, and the second folding-back 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 folding-back piece 2363’ bent inward from the port portion 235’ into the inner cavity body 230’, and the third folding-back piece 2363’ at least partially abuts against the inner wall surface of the third side wall 2313’. The upper concept of the first folding-back piece 2361’, the second folding-back piece 2362’ and the third folding-back piece 2363’ is a folding-back piece.

[0106] In the first embodiment illustrated in the present utility model, the first folding piece 2361' and the second folding piece 2362' have the same width along the second direction A2-A2 (for example, the left-right direction); the first folding piece 2361' and the second folding piece 2362' have the same length along the first direction A1-A1 (for example, the up-down direction); the width of the third folding piece 2363' along the second direction A2-A2 is greater than the width of the first folding piece 2361', and is also greater than the width of the second folding piece 2362'; the length of the third folding piece 2363' along the first direction A1-A1 is equal to the length of the first folding piece 2361', and is also equal to the length of the second folding piece 2362'. In the first embodiment illustrated in the present utility model, the first direction A1-A1, the second direction A2-A2, and the third direction A3-A3 are perpendicular to each other in pairs. The folding piece does not overlap with the first contact portion 221b' and the second contact portion 222b' along the first direction A1-A1.

[0107] Compared with the prior art, the present utility model can adjust the impedance of the signal terminals to a certain extent by providing the first folding piece 2361', the second folding piece 2362', and the third folding piece 2363', so that when the first backplane connector 100 changes from the plugged state to the separated state with the second backplane connector 200', the impedance change of the signal terminals can be suppressed as much as possible, and the impedance of the signal terminals tends to be stable.

[0108] Please refer to Figure 11 As shown, the holding block 24' is used to position and limit the installation portion 232' of the metal shielding member 23'. Specifically, the holding block 24' includes a plurality of mounting strips 241' arranged in a staggered manner and connected as a whole, and each mounting strip 241' is provided with a positioning groove 242' for positioning the installation portion 232'.

[0109] During assembly, first, assemble the terminal module 22' and the insulating body 26' together, where the insulating block 223' is at least partially received in the receiving space 2603'; then, sleeved the metal shielding surround 23' on the insulating body 26' to form the mounting module 25'; then, install the mounting module 25' from top to bottom in the receiving groove 2108' of the housing 21', where the mounting portion 232' is clamped in the main body groove 2108a', and the four arc-shaped corners of the mounting portion 232' respectively correspond to the first arc surface 2108a1', the second arc surface 2108a2', the third arc surface 2108a3' 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' respectively abut against the first support surface 2108b1' and the second support surface 2108c1' to play a role in positioning and limiting; finally, install the holding block 24' from bottom to top in the receiving groove 2100' to fix the mounting portion 232' of the metal shielding surround 23'. At this time, the mounting feet 233' of the metal shielding surround 23', the first mounting feet 221c' of the first signal terminal 221' and the second mounting feet 222c' of the second signal terminal 222' pass through the holding block 24' to be electrically connected to the second circuit board 302.

[0110] 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 housing 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'.

[0111] In the first embodiment illustrated by the present utility model, the metal shielding surrounding member 23' of the present utility model includes a cylindrical body portion 231' and a mounting portion 232' extending downward from the cylindrical body portion 231'. The cylindrical body 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. Additionally, 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 2313' and is located on the same side of the metal shielding surrounding member 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 surrounding member 23'. With such an 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.

[0112] Please refer to Figures 23 to 36 As shown, in the second embodiment of the second backplane connector 200' of the present utility model, the second backplane connector 200' includes a housing 21', a plurality of terminal modules 22' installed in the housing 21', a holding block 24' installed on the housing 21', and a metal shielding surrounding member 23' sleeved on the insulating body 26'. The second backplane connector 200' is used to mount the second circuit board 302. When assembling the second backplane connector 200', the terminal module 22' and the metal shielding surrounding member 23' are assembled into the housing 21' in opposite directions. For example, the terminal module 22' is assembled into the housing 21' from bottom to top, and the metal shielding surrounding member 23' is assembled into the housing 21' from top to bottom.

[0113] The main differences between the second backplane connector 200' in the second embodiment of the present utility model and the second backplane connector 200' in the first embodiment of the present utility model are as follows: In the second backplane connector 200' of the second embodiment of the present utility model, the plurality of insulating bodies 26' are integrally formed with the base 210' of the housing 21'; in addition, in the second backplane connector 200' of the second embodiment of the present utility model, there are some differences in the structure between the metal shielding surround 23' and the metal shielding surround 23' in the first embodiment. The following describes the main differences between the second backplane connector 200' in the second embodiment of the present utility model and the second backplane connector 200' in the first embodiment of the present utility model. For the same or corresponding parts of the two, please refer to the relevant description in the first embodiment of the present utility model.

[0114] In the second embodiment of the second backplane connector 200' of the present utility model, the base 210' is provided with a positioning groove 2104' located outside the insulating body 26', and the positioning groove 2104' is U-shaped.

[0115] In the second embodiment of the second backplane connector 200' of the present utility model, the metal shielding surround 23' is assembled on the housing 21' and sleeved on the insulating body 26'.

[0116] Please refer to Figures 23 to 36As shown, in the second embodiment illustrated in the present utility model, the metal shielding surround 23' is formed by stamping, bending, and riveting a metal plate, and includes a cylindrical part 231', a mounting part 232' extending downward from the cylindrical part 231', and a plurality of mounting feet 233' extending downward from the mounting part 232'. The cylindrical part 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' to enclose a fully enclosed shielding cavity. In the second embodiment illustrated in the present utility model, the metal shielding surround 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 second embodiment illustrated in the present utility model, the areas of the first side wall 2311' and the third side wall 2313' are larger than the areas of the second side wall 2312' and the fourth side wall 2314'. In the second embodiment of the present utility model, deflection portions 2315' that are bent inward are provided at the ends of the second side wall 2312' and the fourth side wall 2314'. These deflection portions 2315' are independent of each other to facilitate independent bending and avoid mutual interference. Each deflection portion 2315' is provided with a guiding portion 2315a' on its outer surface. In the second embodiment illustrated in the present utility model, the guiding portion 2315a' is in the shape of an arc bent inward. By providing the deflection portions 2315', a constriction opening can be formed at the end of the metal shielding surround 23', and the guiding portion 2315a' can make it easy to guide and insert the deflection portions 2315' into the first backplane connector 100. In the second embodiment of the present utility model, 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 riveting line 2311c' is formed at the joint of the first wall portion 2311a' and the second wall portion 2311b'. In the second embodiment illustrated in the present utility model, the first wall portion 2311a' and the second wall portion 2311b' are provided with a dovetail groove 2311d' and a dovetail projection 2311e' that are buckled together. In other embodiments of the present utility model, deflection portions 2315' that are bent inward may also be provided only at the ends of at least three of the connected first side wall 2311', second side wall 2312', third side wall 2313', and fourth side wall 2314'. For example, deflection portions 2315' that are bent inward are provided at the ends of the second side wall 2312', third side wall 2313', and fourth side wall 2314' connected in sequence.

[0117] In the second embodiment illustrated in the present utility model, the mounting portion 232' is U-shaped, and the mounting portion 232' includes a connecting portion 2320', a first bending portion 2321' bent from one side of the connecting portion 2320', and a second bending portion 2322' bent from the other opposite side of the connecting portion 2320'; the mounting portion 232' is assembled and fixed in the positioning groove 2104'.

[0118] In the second embodiment illustrated in the present utility model, the cylindrical body portion 231' is provided with a port portion 235', and the port portion 235' is generally rectangular. The deflection portion 2315' is bent inward from both sides of the port portion 235'. The first wall portion 2311a' includes a first folding piece 2361' bent from the port portion 235' into the inner cavity body 230', and the first folding piece 2361' abuts against the inner wall surface of the first wall portion 2311a'. Similarly, the second wall portion 2311b' includes a second folding piece 2362' bent from the port portion 235' into the inner cavity body 230', and the second folding piece 2362' abuts against the inner wall surface of the second wall portion 2311b'. The third side wall 2313' includes a third folding piece 2363' bent from the port portion 235' into the inner cavity body 230', and the third folding piece 2363' abuts against the inner wall surface of the third side wall 2313'. In the second embodiment illustrated in the present utility model, the first folding piece 2361' and the second folding piece 2362' have the same width in the second direction A2-A2 (for example, the left-right direction); the first folding piece 2361' and the second folding piece 2362' have the same length in the first direction A1-A1 (for example, the up-down direction); the width of the third folding piece 2363' in the second direction A2-A2 is greater than the width of the first folding piece 2361', and is also greater than the width of the second folding piece 2362'; the length of the third folding piece 2363' in the first direction A1-A1 is equal to the length of the first folding piece 2361', and is also equal to the length of the second folding piece 2362'. In one embodiment of the present utility model, the first folding piece 2361', the second folding piece 2362', and the third folding piece 2363' all at least partially protrude into the accommodating space 263' of the insulating body 26'.

[0119] Please refer to Figure 29 , Figure 30 and Figure 36As shown, in the illustrated embodiment of the present utility model, the first wall portion 2311a' of the first sidewall 2311' is further provided with a first opening 2311f' that penetrates through the first wall portion 2311a' and communicates with the inner cavity 230'; the second wall portion 2311b' of the first sidewall 2311' is further provided with a second opening 2311g' that penetrates through the second wall portion 2311b' and communicates with the inner cavity 230'; the third sidewall 2313' is further provided with a plurality of third openings 2313a' that penetrate through the third sidewall 2313' and communicate with the inner cavity 230'. The first folding piece 2361' is provided with a first deflecting portion 2361a' at its free end, and at least part of the first deflecting portion 2361a' is received in the first opening 2311f' to seal the first opening 2311f', thereby improving the shielding effect; the second folding piece 2362' is provided with a second deflecting portion 2362a' at its free end, and at least part of the second deflecting portion 2362a' is received in the second opening 2311g' to seal the second opening 2311g', thereby improving the shielding effect; the third folding piece 2363' is provided with a plurality of third deflecting portions 2363a' at its free end, and at least part of the third deflecting portion 2363a' is received in the plurality of third openings 2313a' to seal the third openings 2313a', thereby improving the shielding effect. In the illustrated embodiment of the present utility model, the outer surface of the first deflecting portion 2361a' is coplanar with the outer surface of the first wall portion 2311a', the outer surface of the second deflecting portion 2362a' is coplanar with the outer surface of the second wall portion 2311b', and the outer surface of the third deflecting portion 2363a' is coplanar with the outer surface of the third sidewall 2313'.

[0120] Compared with the prior art, the present utility model can adjust the impedance of the signal terminals to a certain extent by providing the first folding piece 2361', the second folding piece 2362' and the third folding piece 2363', so that when the first backplane connector 100 changes from the plugged state to the separated state with the second backplane connector 200', the impedance change of the signal terminals can be suppressed as much as possible, and the impedance of the signal terminals tends to be stable.

[0121] The above embodiments are only used to illustrate the present utility model and do not limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the art of the relevant technical field. Although this specification has described the present utility model in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the relevant technical field can still modify the present utility model or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A backplane connector, characterized in that: include: A housing, the housing comprising a base, a first side wall extending from one end of the base, and a second side wall extending 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; An insulating body, the insulating body comprising a terminal receiving hole; A terminal module, the terminal module comprising a first signal terminal and a second signal terminal, the first signal terminal and the second signal terminal are at least partially disposed in the terminal receiving hole; as well as A metal shielding surrounding member, wherein the metal shielding surrounding member is sleeved on the insulating body; The metal shield surrounding member comprises a cylindrical body portion, the cylindrical body portion protrudes into the receiving space, the cylindrical body portion comprises a first side wall, a second side wall, a third side wall and a fourth side wall, 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 enclose an inner cavity; The barrel portion includes a port portion and a folded piece bent from the port portion into the inner cavity, and the folded piece at least partially extends into the inner cavity along a first direction.

2. The backplane connector according to claim 1, wherein: The inverted piece includes a first inverted piece and a second inverted piece arranged on the first side wall, wherein the first inverted piece and the second inverted piece are at least partially attached to the inner wall surface of the first side wall.

3. The backplane connector according to claim 2, wherein: The inverted piece includes a third inverted piece arranged on the third side wall, wherein the third inverted piece is at least partially attached to the inner wall surface of the third side wall.

4. The backplane connector according to claim 3, wherein: The first side wall includes a first wall portion and a second wall portion, wherein the first wall portion and the second wall portion are fixed together by riveting, and a rivet line is formed at the junction of the first wall portion and the second wall portion; The first inverted piece is disposed on the first wall portion, and the second inverted piece is disposed on the second wall portion.

5. The backplane connector according to claim 4, wherein: The width of the third inverted piece along the second direction is greater than the width of the first inverted piece along the second direction, and the width of the third inverted piece along the second direction is also greater than the width of the second inverted piece along the second direction; the second direction is perpendicular to the first direction.

6. The backplane connector according to claim 5, wherein: The width of the first inverted piece along the second direction is the same as the width of the second inverted piece along the second direction; The length of the first inverted piece along the first direction, the length of the second inverted piece along the first direction, and the length of the third inverted piece along the first direction are all the same.

7. The backplane connector according to claim 1, wherein: The base is provided with a receiving groove penetrating through the base; The backplane connector includes a mounting module, the mounting module is assembled in the receiving groove, and the mounting module includes the insulating body, the terminal module and the metal shielding surrounding member; The insulating body and the shell are arranged separately.

8. The backplane connector according to claim 7, wherein: The metal shielding surrounding member includes a mounting portion extending integrally from the cylindrical portion, 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.

9. The backplane connector according to claim 8, wherein: The sixth side wall protrudes outward from the second side wall; the eighth side wall protrudes outward from the fourth side wall.

10. The backplane connector according to claim 9, wherein: The fifth side wall is flush with the first side wall; the seventh side wall is flush with the third side wall.

11. The backplane connector according to claim 9, 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.

12. The backplane connector according to claim 11, 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.

13. The backplane connector according to claim 11, 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.

14. The backplane connector according to claim 8, 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.

15. The backplane connector according to claim 8, wherein: The terminal module includes an insulating block fixed on the first signal terminal and the second signal terminal; The insulating body comprises a base portion, 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 base portion is provided with a first terminal receiving hole and a second terminal receiving hole, the terminal receiving holes comprise the first terminal receiving hole and the 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; The first extension block is provided with a first side surface located on the outside and a first positioning groove recessed inwardly from the first side surface; the second extension block is provided with a second side surface located on the outside 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.

16. The backplane connector according to claim 15, 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.

17. The backplane connector according to claim 15, 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.

18. The backplane connector according to claim 1, wherein: The insulating body and the base are integrally formed, and the base is provided with a positioning groove located outside the insulating body, and the positioning groove is U-shaped; The metal shielding surrounding member is assembled to the shell; the metal shielding surrounding member includes a mounting portion extending downward from the cylindrical portion, the mounting portion is U-shaped, and the mounting portion includes a connecting portion, a first bending portion bent from one side of the connecting portion, and a second bending portion bent from the other opposite side of the connecting portion; the mounting portion is assembled and fixed in the positioning groove.

19. The backplane connector according to claim 2, wherein: The first side wall is provided with a first opening penetrating through the first side wall; the first inverted sheet is provided with a first deflection portion located at a free end thereof, and the first deflection portion is at least partially received in the first opening.

20. The backplane connector according to claim 15, 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.

Images