Backplane Connectors

Abstract

A backplane connector, comprising a shell, a plurality of terminal modules, a metal shielding surround and a retaining block. The shell comprises a base, a receiving groove and a plurality of insulating protrusions extending integrally from the base. The terminal module comprises a first signal terminal and a second signal terminal accommodated in the insulating protrusion, the first signal terminal being provided with a first mounting foot, and the second signal terminal being provided with a second mounting foot. The metal shielding surround comprises a first tail portion, a second tail portion and a cylindrical portion sleeved on the insulating protrusion. The retaining block is installed in the receiving groove, and the retaining block is provided with openings for allowing the first mounting foot, the second mounting foot, the first tail portion and the second tail portion to pass through. Such an arrangement improves the shielding performance of the backplane connector.

Description

[0001] The present invention claims the priority of Chinese patent application with application date of June 19, 2020, application number 202010567796.4, and invention name “Backplane Connector Assembly”, 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] The existing backplane connector assembly usually includes a male connector and a female connector that cooperate with each other. The male connector and the female connector are respectively provided with conductive terminals that cooperate with each other. Generally speaking, the conductive terminals include signal terminals and ground terminals to improve the quality of signal transmission.

[0004] However, as the requirements for signal transmission quality continue to increase, it is necessary to design a backplane connector that has a better data transmission protection effect on the signal terminals. Summary of the invention

[0005] The object of the present invention is to provide a backplane connector with better shielding effect.

[0006] To achieve the above object, the present invention adopts the following technical solution: a backplane connector, comprising:

[0007] A housing, the housing comprising a base, a receiving groove at the bottom end of the base, and a plurality of insulating protrusions extending integrally from the base, the insulating protrusions being provided with a first terminal receiving hole and a second terminal receiving hole;

[0008] A plurality of terminal modules, the terminal modules are mounted on the housing, the terminal modules include a first signal terminal received in the first terminal receiving hole and a second signal terminal received in the second terminal receiving hole, the first signal terminal is provided with a first mounting foot, and the second signal terminal is provided with a second mounting foot;

[0009] A metal shielding surrounding member, the metal shielding surrounding member comprising a first tail portion, a second tail portion, and a barrel portion sleeved on the insulating protrusion; and

[0010] A holding block is installed in the accommodating groove, and the holding block is provided with openings for allowing the first mounting foot, the second mounting foot, the first tail portion and the second tail portion to pass through.

[0011] As a further improved technical solution of the present invention, the plurality of insulating protrusions are arranged in multiple rows, and the insulating protrusions in two adjacent rows are staggered.

[0012] As a further improved technical solution of the present invention, the shell is also provided with a partition portion for separating the first terminal receiving hole from the second terminal receiving hole; the base is also provided with a terminal receiving groove connected to the first terminal receiving hole and the second terminal receiving hole; the terminal module includes an insulating block fixed on the first signal terminal and the second signal terminal, and the insulating block is received in the terminal receiving groove; the top surface of the insulating block presses against the bottom surface of the partition portion to achieve limiting.

[0013] As a further improved technical solution of the present invention, the cylindrical body 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 and the third side wall are arranged face to face, and the second side wall and the fourth side wall are arranged face to face; the cylindrical body portion at least partially surrounds the first signal terminal and the second signal terminal.

[0014] As a further improved technical solution of the present invention, the ends of the first side wall, the second side wall, the third side wall and the fourth side wall are provided with deflection parts bent inwardly, and these deflection parts are separated from each other, and the deflection parts are used to guide the metal shielding surrounding piece to be inserted into the docking connector.

[0015] As a further improved technical solution of the present invention, the metal shielding enclosure also includes an installation portion extending from the cylindrical portion, the installation portion includes a connecting portion, a first bent portion bent from one side of the connecting portion, and a second bent portion bent from the other opposite side of the connecting portion, wherein: the connecting portion is connected to the third side wall, the first bent portion and the second side wall are located on the same side, the second bent portion and the fourth side wall are located on the same side, the first tail portion is extended from the first bent portion, and the second tail portion is extended from the second bent portion.

[0016] As a further improved technical solution of the present invention, the base is provided with a positioning groove surrounding part of the insulating protrusion, the positioning groove includes a first positioning groove, a second positioning groove parallel to the first positioning groove, and a third positioning groove connecting the first positioning groove and the second positioning groove, the first bent portion is positioned in the first positioning groove, the second bent portion is positioned in the second positioning groove, and the connecting portion is positioned in the third positioning groove.

[0017] As a further improved technical solution of the present invention, the mounting portion is provided with a retaining portion which presses against the insulating block to limit the insulating block from downwardly separating from the shell.

[0018] As a further improved technical solution of the present invention, the connecting portion is coplanar with the third side wall, the first bent portion protrudes outward from the second side wall, and the second bent portion protrudes outward from the fourth side wall; a plurality of first barbs are provided on a side of the first bent portion away from the third side wall, and a plurality of second barbs are provided on a side of the second bent portion away from the third side wall, and the first barbs and the second barbs are used to be clamped in the shell.

[0019] As a further improved technical solution of the present invention, the mounting portion at least partially extends out of the base, and the retaining block includes a first inner side surface, a second inner side surface opposite to the first inner side surface, a third inner side surface connecting the first inner side surface and the second inner side surface, and a fourth inner side surface connecting the first inner side surface and the second inner side surface and opposite to the third inner side surface, the first inner side surface, the second inner side surface, the third inner side surface and the fourth inner side surface surround the opening, the first bent portion abuts against the first inner side surface, the second bent portion abuts against the second inner side surface, and the connecting portion abuts against the fourth inner side surface.

[0020] Compared with the prior art, the present invention is provided with a plurality of insulating protrusions extending integrally with the base, and the metal shielding surrounding piece is provided with a cylindrical portion sleeved on the insulating protrusions, thereby shielding the signal terminals and improving the shielding performance of the backplane connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the backplane connector assembly of the present invention in another embodiment.

[0022] Figure 2 yes Figure 1 Partial exploded view of the .

[0023] Figure 3 yes Figure 2 Another view of the second backplane connector when installed on the second circuit board.

[0024] Figure 4 yes Figure 3 A three-dimensional schematic diagram of the second backplane connector.

[0025] Figure 5 yes Figure 4 main view.

[0026] Figure 6 yes Figure 4 Rear view of.

[0027] Figure 7 yes Figure 4 Top view of the .

[0028] Figure 8 yes Figure 4 Bottom view of .

[0029] Fig. 9 yes Figure 3 A partial exploded view of the second backplane connector.

[0030] Fig.10 yes Fig. 9 Partial exploded perspective view from another angle.

[0031] Fig.11 yes Fig. 9 Further exploded view.

[0032] Fig.12 is along Fig.11 Schematic diagram of the cross section of the LL line.

[0033] Fig.13 It is a three-dimensional exploded view of the second backplane connector from another angle.

[0034] Fig.14 Fig.11 Top view of the middle shell.

[0035] Fig.15 Fig.11 Bottom view of the middle shell.

[0036] Fig.16 yes Fig.11 Front view of the middle terminal module.

[0037] Fig.17 yes Fig.11 Rear view of the middle terminal module.

[0038] Fig.18 It is a three-dimensional schematic diagram of a metal shielding surrounding member.

[0039] Fig.19 It is a three-dimensional schematic diagram of the metal shield surrounding piece being sleeved on the terminal module.

[0040] Fig. 20 yes Fig.19 main view.

[0041] Fig.21 yes Fig.19 Rear view of.

[0042] Fig. 22 yes Fig.19 Left view of .

[0043] Fig.23 It is a partial exploded perspective view of the second backplane connector.

[0044] Fig.24 yes Fig.23A partial enlarged view of the circled portion M.

[0045] Fig.25 yes Fig.23 Partial three-dimensional exploded view from another angle.

[0046] Fig.26 yes Fig.25 A partial enlarged view of the circled part N.

[0047] Fig. 27 is along Figure 4 Schematic diagram of the cross section along line OO. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Please refer to Figure 1 and Figure 2As 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.

[0052] Please refer to Figures 3 to 11 As shown, the second backplane connector 200' includes a housing 21', a plurality of terminal modules 22' installed in the housing 21', a metal shielding surround 23' fixed to the housing 21' and located outside the terminal modules 22', and a retaining block 24' installed on the housing 21'.

[0053] Please refer to Fig. 9 as well as Figures 13 to 15 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'.

[0054] In the illustrated embodiment of the present invention, the housing 21' is further provided with a plurality of insulating protrusions 214' extending integrally from the base 210' and arranged at intervals. The plurality of insulating protrusions 214' extend upward into the receiving space 213'. The plurality of insulating protrusions 214' are arranged in a plurality of rows along the front-to-back direction, and the insulating protrusions 214' in two adjacent rows are arranged in a staggered manner, that is, the insulating protrusions 214' at the same position in two adjacent rows are not aligned along the front-to-back direction. 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 retaining block 24'.

[0055] Please combine Fig.14As shown, the base 210' is also provided with a plurality of positioning grooves 2104' that penetrate the top surface 2101'. In the illustrated embodiment of the present invention, each positioning groove 2104' is roughly U-shaped, is arranged around the corresponding insulating protrusion 214', and is used to install the metal shielding surrounding member 23'. Specifically, each positioning groove 2104' includes a first positioning groove 2104a' extending forward and backward, a second positioning groove 2104b' parallel to the first positioning groove 2104a', and a third positioning groove 2104c' connecting the first positioning groove 2104a' and the second positioning groove 2104b'. In the illustrated embodiment of the present invention, the positioning groove 2104' penetrates the bottom surface 2102' to communicate with the accommodating groove 2100'.

[0056] Please refer to Fig.12 as well as Fig.13 As shown, in addition, the bottom surface 2102' of the base 210' is also provided with a plurality of terminal receiving grooves 2105', positioning protrusions 2106' located on both sides of each terminal receiving groove 2105', and positioning holes 2107' for matching with the holding block 24'. The terminal receiving grooves 2105' penetrate the bottom surface 2102' and are recessed into the insulating protrusions 214'. Please refer to Fig.12 As shown, each insulating protrusion 214' is roughly in the shape of a rectangular parallelepiped, and is provided with an upper end surface 2141', a connecting groove 2142' penetrating the upper end surface 2141', and a terminal receiving hole located at the bottom of the connecting groove 2142' and connected to the terminal receiving groove 2105'. 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 circular holes. The shell 21' is also provided with a partition 2145' for separating the first terminal receiving hole 2143' from the second terminal receiving hole 2144'. The partition 2145' is provided with a bottom surface 2145a'. The four corners of the upper end surface 2141' are provided with guide inclined surfaces 2141a' for guiding the installation of the metal shielding surrounding member 23'. Please refer to Fig.14 As shown, the connecting groove 2142' includes a first arc groove 2142a' corresponding to the first terminal receiving hole 2143', a second arc groove 2142b' corresponding to the second terminal receiving hole 2144', and a straight groove 2142c' connecting the first arc groove 2142a' and the second arc groove 2142b'. The arc of the first arc groove 2142a' is a major arc and the center of the major arc overlaps with the center of the first terminal receiving hole 2143'. Similarly, the arc of the second arc groove 2142b' is a major arc and the center of the major arc overlaps with the center of the second terminal receiving hole 2144'.

[0057] Please refer to Fig. 9 As 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 top of the plurality of first protrusions 2113'.

[0058] Please refer to Fig.10 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'.

[0059] Please refer to Fig.16 and Fig.17As 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'.

[0060] 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.

[0061] 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.

[0062] 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 housing 21' to improve the installation reliability.

[0063] Please refer to Figures 18 to 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', and a plurality of mounting feet 233' extending downward from 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. Of course, in other embodiments, the shielding cavity may also be a non-all-inclusive type, for example, the barrel portion 231' includes a second side wall 2312', a third side wall 2313' and a fourth side wall 2314' connected in sequence, so that the barrel portion 231' is roughly U-shaped. In the illustrated embodiment of the present invention, the area of ​​the first side wall 2311' and the third side wall 2313' is larger 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 a deflection portion 2315' that is bent inwardly, and these deflection portions 2315' are independent of each other so as to bend independently and avoid mutual interference. Each deflection portion 2315' is provided with a guide portion 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.

[0064] In the illustrated embodiment of the present invention, the mounting portion 232' is generally U-shaped, and includes a connecting portion 2320', a first bent portion 2321' bent from one side of the connecting portion 2320', a second bent portion 2322' bent from the other opposite side of the connecting portion 2320', a first tail portion 2324' extending downward from the first bent portion 2321', and a second tail portion 2325' extending downward from the second bent portion 2322'. The first bent portion 2321' is fixed in the first positioning groove 2104a', the second bent portion 2322' is fixed in the second positioning groove 2104b', and the connecting portion 2320' is fixed in the third positioning groove 2104c'. The connecting portion 2320' is coplanar with the third side wall 2313'. The first bending portion 2321' and the second side wall 2312' are located on the same side, and the first bending portion 2321' protrudes outward from the second side wall 2312'. The second bending portion 2322' and the fourth side wall 2314' are located on the same side, and the second bending portion 2322' protrudes outward from the fourth side wall 2314'. The mounting portion 232' further includes a bottom buckling portion 2326' located at the connecting portion 2320'. In the illustrated embodiment of the present invention, when the metal shielding surrounding member 23' is not mounted on the insulating protrusion 214', the buckling portion 2326' and the connecting portion 2320' are located in the same plane; when the metal shielding surrounding member 23' is mounted on the insulating protrusion 214', the buckling portion 2326' is bent inward (i.e., toward the direction of the first side wall 2311') so that the buckling portion 2326' is perpendicular to the connecting portion 2320'. The buckling portion 2326' is located at the middle of the bottom edge of the connecting portion 2320'. A plurality of first barbs 2321a' are further provided on a side of the first bending portion 2321' away from the third side wall 2313'. A plurality of second barbs 2322a' are further provided on a side of the second bending portion 2322' away from the third side wall 2313'. Both the first barbs 2321a' and the second barbs 2322a' extend beyond the first side wall 2311' to be clamped on the shell 21'. The first tail portion 2324' is provided with a first fisheye hole 2324a', so that the first tail portion 2324' has a certain elasticity, so that it is easy to be pressed into the conductive hole of the second circuit board 302' to achieve electrical conduction. The second tail portion 2325' is provided with a second fisheye hole 2325a', so that the second tail portion 2325' has a certain elasticity, so as to be pressed into the conductive hole of the second circuit board 302 to achieve electrical conduction. In the illustrated embodiment of the present invention, the first tail portion 2324' and the second tail portion 2325' are parallel to each other and aligned left and right.The first tail portion 2324 ′ and the second tail portion 2325 ′ are perpendicular to the first mounting foot 221 c ′ and the second mounting foot 222 c ′.

[0065] Please refer to Figure 23 to Figure 27 As shown, the holding block 24' includes a plurality of mounting strips 241' arranged in a staggered manner and connected as a whole, wherein each mounting strip 241' is provided with a positioning groove 242' for positioning the mounting portion 232'. Specifically, each mounting strip 241' includes a plurality of openings 243' that are substantially rectangular, and the openings 243' of two adjacent rows of mounting strips 241' are arranged alternately. Two adjacent openings 241' on the same mounting strip 241' are separated by a partition wall 244' located between them. The holding block 24' includes a first inner side surface 2411', a second inner side surface 2412' opposite to the first inner side surface 2411', a third inner side surface 2413' connecting the first inner side surface 2411' and the second inner side surface 2412', and a fourth inner side surface 2414' connecting the first inner side surface 2411' and the second inner side surface 2412' and opposite to the third inner side surface 2413'. The first opening 2414a' and the second opening 2414b' are respectively provided at both ends of the fourth inner side surface 2414'. In addition, the first bell mouth 2414c' located above the first opening 2414a' and the second bell mouth 2414d' located above the second opening 2414b' are also provided at both ends of the fourth inner side surface 2414'. The first inner side surface 2411', the second inner side surface 2412' and the third inner side surface 2413' are connected to form a U shape to accommodate the mounting portion 232'. The first bell mouth 2414c' and the first opening 2414a' are used to allow the first tail portion 2324' to pass through and achieve positioning; the second bell mouth 2414d' and the second opening 2414b' are used to allow the second tail portion 2325' to pass through and achieve positioning. In one embodiment of the present invention, the retaining block 24' is electroplated plastic to achieve a better shielding effect. The holding block 24 ′ is provided with a positioning column 245 ′ that matches with the positioning hole 2107 ′.

[0066] During assembly, first, a plurality of metal shielding surrounding members 23' are sleeved on the insulating protrusion 214' from top to bottom, so that the barrel portion 231' is wrapped around the insulating protrusion 214', and the U-shaped mounting portion 232' is inserted into the U-shaped positioning groove 2104'; the first tail portion 2324' and the second tail portion 2325' respectively pass through the first positioning groove 2104a' and the second positioning groove 2104b' to extend out of the bottom surface 2102' and be exposed in the receiving groove 2100'. The mounting portion 232' is partially exposed in the receiving groove 2100' to extend the shielding of the first signal terminal 221' and the second signal terminal 222'. When the metal shielding surrounding member 23' is installed in place, the first barb portion 2321a' and the second barb portion 2322a' will pierce the inner wall of the terminal receiving groove 2105' to improve the holding force.

[0067] Insert a plurality of terminal modules 22' from bottom to top into the corresponding terminal receiving grooves 2105', at which time the convex strip 2236' of the insulating block 223' is pressed against the inner wall of the terminal receiving groove 2105' to improve the installation reliability; when the terminal module 22' is installed in place, the top surface 2231a' of the insulating block 223' presses against the bottom surface 2145a' of the partition 2145' to achieve limiting; the first contact portion 221b' of the first signal terminal 221' and the second contact portion 222b' of the second signal terminal 222' extend into the first terminal receiving hole 2143' and the second terminal receiving hole 2144' respectively; the first mounting foot 221c' of the first signal terminal 221' and the second mounting foot 222c' of the second signal terminal 222' extend out of the bottom surface 2102' and are exposed in the receiving groove 2100'.

[0068] Then, the buckling portion 2326' is bent inwardly so that the buckling portion 2326' is located in the positioning groove 2232c' and abuts against the insulating block 223'. This arrangement can prevent the metal shielding surrounding member 23' from detaching upward from the insulating protrusion 214' and prevent the terminal module 22' from detaching downward from the housing 21'.

[0069] Finally, the retaining block 24' is installed in the receiving groove 2100' from bottom to top. At this time, the U-shaped mounting portion 232' is inserted into the opening 243' of the retaining block 24' under the guidance of the first bell mouth 2414c' and the second bell mouth 2414d'. At this time, the first bent portion 2321' abuts against the first inner side surface 2411', the second bent portion 2322' abuts against the second inner side surface 2412', and the connecting portion 2320' abuts against the fourth inner side surface 2414'. The first tail portion 2324' and the second tail portion 2325' of the metal shielding surround 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 opening 243' of the retaining block 24' to be electrically connected to the second circuit board 302.

[0070] 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'.

[0071] 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 (200'), characterized in that: include: A housing (21'), the housing (21') comprising a base (210'), a receiving groove (2100') located at the bottom end of the base (210'), and a plurality of insulating protrusions (214') extending integrally from the base (210'), the insulating protrusions (214') being provided with a first terminal receiving hole (2143') and a second terminal receiving hole (2144'); A plurality of terminal modules (22'), wherein the terminal modules (22') are installed on the housing (21'), and the terminal modules (22') include a first signal terminal (221') received in the first terminal receiving hole (2143') and a second signal terminal (222') received in the second terminal receiving hole (2144'), wherein the first signal terminal (221') is provided with a first mounting foot (221c'), and the second signal terminal (222') is provided with a second mounting foot (222c'); A metal shielding surrounding member (23'), the metal shielding surrounding member (23') comprising a first tail portion (2324'), a second tail portion (2325'), and a cylindrical portion (231') sleeved on the insulating protrusion (214'); and a holding block (24'), the holding block (24') being installed in the receiving groove (2100'), the holding block (24') being provided with an opening (243') for allowing the first mounting foot (221c'), the second mounting foot (222c'), the first tail portion (2324') and the second tail portion (2325') to pass through; 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') and the third side wall (2313') are arranged face to face, and the second side wall (2312') and the fourth side wall (2314') are arranged face to face; the barrel portion (231') at least partially surrounds the first signal terminal (221') and the second signal terminal (222'); and the plurality of insulating protrusions (214') are arranged in multiple rows.

2. The backplane connector (200') according to claim 1, characterized in that: The insulating protrusions (214') in two adjacent rows are arranged in a staggered manner.

3. The backplane connector (200') according to claim 1, characterized in that: The housing (21') is further provided with a partition (2145') for separating the first terminal receiving hole (2143') from the second terminal receiving hole (2144'); the base (210') is further provided with a terminal receiving groove (2105') connected to the first terminal receiving hole (2143') and the second terminal receiving hole (2144'); the terminal module (22') comprises an insulating block (223') fixed on the first signal terminal (221') and the second signal terminal (222'), and the insulating block (223') is received in the terminal receiving groove (2105'); the top surface (2231a') of the insulating block (223') presses against the bottom surface (2145a') of the partition (2145') to achieve limiting.

4. The backplane connector (200') according to claim 3, characterized in that: 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 portions (2315'), and these deflection portions (2315') are separated from each other, and the deflection portions (2315') are used to guide the metal shielding surround (23') to be inserted into the docking connector.

5. The backplane connector (200') according to claim 3, characterized in that: The metal shielding surrounding member (23') also includes a mounting portion (232') extending from the cylindrical portion (231'), and the mounting portion (232') includes a connecting portion (2320'), a first bent portion (2321') bent from one side of the connecting portion (2320'), and a second bent portion (2322') bent from the other opposite side of the connecting portion (2320'), wherein: the connecting portion (2320') is connected to the third side wall (2313'), the first bent portion (2321') and the second side wall (2312') are located on the same side, the second bent portion (2322') and the fourth side wall (2314') are located on the same side, the first tail portion (2324') is extended from the first bent portion (2321'), and the second tail portion (2325') is extended from the second bent portion (2322').

6. The backplane connector (200') according to claim 5, characterized in that: The base (210') is provided with a positioning groove (2104') surrounding a portion of the insulating protrusion (214'), the positioning groove (2104') includes a first positioning groove (2104a'), a second positioning groove (2104b') parallel to the first positioning groove (2104a'), and a third positioning groove (2104c') connecting the first positioning groove (2104a') and the second positioning groove (2104b'), the first bending portion (2321') is positioned in the first positioning groove (2104a'), the second bending portion (2322') is positioned in the second positioning groove (2104b'), and the connecting portion (2320') is positioned in the third positioning groove (2104c').

7. The backplane connector (200') according to claim 5, characterized in that: The mounting portion (232') is provided with a retaining portion (2326') that is pressed against the insulating block (223') to limit the insulating block (223') from being disengaged downward from the housing (21').

8. The backplane connector (200') according to claim 5, characterized in that: The connecting portion (2320') is coplanar with the third side wall (2313'); the first bent portion (2321') protrudes outward from the second side wall (2312'); and the second bent portion (2322') protrudes outward from the fourth side wall (2314'); a side of the first bent portion (2321') away from the third side wall (2313') is provided with a plurality of first barb portions (2321a'); a side of the second bent portion (2322') away from the third side wall (2313') is provided with a plurality of second barb portions (2322a'); the first barb portions (2321a') and the second barb portions (2322a') are used to be clamped in the shell (21').

9. The backplane connector (200') according to claim 5, characterized in that: The mounting portion (232') at least partially extends out of the base (210'), and the holding block (24') includes a first inner side surface (2411'), a second inner side surface (2412') opposite to the first inner side surface (2411'), a third inner side surface (2413') connecting the first inner side surface (2411') and the second inner side surface (2412'), and a third inner side surface (2413') connecting the first inner side surface (2411') and the second inner side surface (2412') and opposite to the third inner side surface (2413'). Four inner side surfaces (2414'), the first inner side surface (2411'), the second inner side surface (2412'), the third inner side surface (2413') and the fourth inner side surface (2414') surround the opening (243'), the first bent portion (2321') abuts against the first inner side surface (2411'), the second bent portion (2322') abuts against the second inner side surface (2412'), and the connecting portion (2320') abuts against the fourth inner side surface (2414').

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