TWM668980U - Backplane connector - Google Patents

Abstract

A backplane connector includes a shell, an insulating body, a terminal module and a metal shielding surround. The shell includes a base, a first side wall, a second side wall and a receiving space. The metal shielding surround is sleeved on the insulating body. The metal shielding surround includes a barrel portion, which protrudes into the receiving space, and the barrel portion includes an inner cavity. The barrel portion includes a port portion and a folded piece that is folded from the port portion into the inner cavity. The folded piece at least partially extends into the inner cavity along a first direction. The folded piece is configured to adjust the impedance of the signal terminal to a certain extent so that the impedance of the signal terminal tends to be stable.

Description

Backplane connector

This work claims the priority of the Chinese patent application with application date of June 25, 2024, application number 202421467374X, and invention name "backplane connector", all contents of which are incorporated into this work by reference.

This creation involves a backplane connector, which belongs to the field of connector technology.

The known backplane connector generally includes a housing and a plurality of terminal modules disposed 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 on the periphery of the aforementioned insulating block. The conductive terminal includes a contact portion for matching with a docking connector and a mounting foot for connecting to a circuit board. In order to enable the mounting feet of the terminal module to maintain a positional relationship with each other so as to facilitate its installation on the circuit board, some known backplane connectors are also provided with a retaining block mounted on the bottom of the terminal module. The retaining block is generally 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.

The metal shielding surround in the related art includes a cylindrical portion and a mounting portion extending downward from the cylindrical portion. The cylindrical portion includes a first side wall, a second side wall 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.

In the process of the backplane connector and the docking connector changing from the docking state to the separation state, as the signal terminal of the backplane connector and the signal terminal of the docking connector separate, the impedance of the signal terminal will change.

Therefore, it is necessary to improve the metal shielding surrounding parts in the relevant technology to improve the impedance to the signal terminal.

The purpose of this invention is to provide a metal shielding surround and a backplane connector that are beneficial for adjusting impedance.

To achieve the above-mentioned purpose, the invention adopts the following technical solution: a backplane connector, which includes: a shell, the shell includes 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 form a receiving space for at least partially receiving a docking connector; an insulating body, the insulating body includes a terminal receiving hole; a terminal module, the terminal module includes a first signal terminal and a second signal terminal, the first signal terminal and the second signal terminal are at least partially arranged in the terminal receiving hole; and a metal shielding enclosure The metal shielding surrounding member is sleeved on the insulating body; the metal shielding surrounding member includes a cylindrical body, the cylindrical body protrudes into the receiving space, the cylindrical body includes 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 form an inner cavity; the cylindrical body includes a port portion and a folded piece folded from the port portion into the inner cavity, and the folded piece at least partially extends into the inner cavity along the first direction.

As a further improved technical solution of the present invention, the aforementioned inverted piece includes a first inverted piece and a second inverted piece provided on the aforementioned first side wall, wherein the aforementioned first inverted piece and the aforementioned second inverted piece are at least partially attached to the inner wall surface of the aforementioned first side wall.

As a further improved technical solution of the present invention, the aforementioned folded piece includes a third folded piece arranged on the aforementioned third side wall, wherein the aforementioned third folded piece at least partially abuts against the inner wall surface of the aforementioned third side wall.

As a further improved technical solution of the present invention, the aforementioned first side wall includes a first wall portion and a second wall portion, wherein the aforementioned first wall portion and the aforementioned second wall portion are fixed together by riveting, and a riveting line is formed at the junction of the aforementioned first wall portion and the aforementioned second wall portion; the aforementioned first inverted piece is provided on the aforementioned first wall portion, and the aforementioned second inverted piece is provided on the aforementioned second wall portion.

As a further improved technical solution of the present invention, 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.

As a further improved technical solution of the present invention, 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.

As a further improved technical solution of the present invention, the aforementioned base is provided with a receiving groove penetrating the aforementioned base; The aforementioned backplane connector includes a mounting module, the aforementioned mounting module is assembled in the aforementioned receiving groove, and the aforementioned mounting module includes the aforementioned insulating body, the aforementioned terminal module and the aforementioned metal shielding surrounding member; the aforementioned insulating body and the aforementioned shell are separately arranged.

As a further improved technical solution of the present invention, the aforementioned metal shielding surrounding member includes a mounting portion integrally extending from the aforementioned cylindrical portion, and the aforementioned 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 aforementioned fifth side wall is arranged opposite to the aforementioned seventh side wall, and the aforementioned sixth side wall is arranged opposite to the aforementioned eighth side wall, and the aforementioned fifth side wall, the aforementioned sixth side wall, the aforementioned seventh side wall and the aforementioned 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 surrounding piece; the sixth side wall is connected to the second side wall and is located on the same side of the metal shielding surrounding piece; the seventh side wall is connected to the third side wall and is located on the same side of the metal shielding surrounding piece; the eighth side wall is connected to the fourth side wall and is located on the same side of the metal shielding surrounding piece; the mounting portion is clamped and fixed in the receiving groove.

As a further improved technical solution of this invention, the aforementioned sixth side wall protrudes outward from the aforementioned second side wall; the aforementioned eighth side wall protrudes outward from the aforementioned fourth side wall.

As a further improved technical solution of this creation, the fifth side wall is flush with the first side wall; the seventh side wall is flush with the third side wall.

As a further improved technical solution of the present invention, the aforementioned metal shielding surrounding part includes a first positioning protrusion located between the aforementioned sixth side wall and the aforementioned second side wall and a second positioning protrusion located between the aforementioned eighth side wall and the aforementioned fourth side wall; the aforementioned receiving groove includes a main body groove located in the middle, a first groove located on one side of the aforementioned main body groove and a second groove located on the other side of the aforementioned main body groove; the aforementioned mounting part is clamped in the aforementioned main body groove, the aforementioned first positioning protrusion is clamped in the aforementioned first groove, and the aforementioned second positioning protrusion is clamped in the aforementioned second groove.

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

As a further improved technical solution of the present invention, 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.

As a further improved technical solution of the present invention, the aforementioned metal shielding surround further includes a plurality of mounting feet extending from the aforementioned mounting portion; the aforementioned backplane connector further includes a retaining block disposed at the bottom of the aforementioned housing, the aforementioned retaining block being provided with a positioning groove for positioning the aforementioned mounting portion; the aforementioned plurality of mounting feet pass through the aforementioned retaining block.

As a further improved technical solution of the present invention, the terminal module comprises an insulating block fixed on the first signal terminal and the second signal terminal; the insulating body comprises a base, a first extension block extending upward from one side of the base, and a second extension block extending upward from the other side of the base; the base is provided with a first terminal receiving hole and a second terminal receiving hole, and the terminal receiving hole comprises the first terminal receiving hole and the second terminal receiving hole; the first signal terminal and the second signal terminal are provided with a first terminal receiving hole and a ... The second signal terminal is received in the aforementioned first terminal receiving hole and the aforementioned second terminal receiving hole respectively; the aforementioned first extension block is provided with an outer first side surface and a first positioning groove inwardly recessed from the aforementioned first side surface; the aforementioned second extension block is provided with an outer second side surface and a second positioning groove inwardly recessed from the aforementioned second side surface; the aforementioned second side wall is provided with a first convex bump protruding inwardly and clamped in the aforementioned first positioning groove; the aforementioned fourth side wall is provided with a second convex bump protruding inwardly and clamped in the aforementioned second positioning groove.

As a further improved technical solution of this invention, the aforementioned first positioning groove does not penetrate the aforementioned first extension block inwardly, and the aforementioned second positioning groove does not penetrate the aforementioned second extension block inwardly.

As a further improved technical solution of this invention, the first positioning groove passes through the top surface of the first extension block upward, and the second positioning groove passes through the top surface of the second extension block upward.

As a further improved technical solution of the present invention, the aforementioned insulating body and the aforementioned base are integrally formed, the aforementioned base is provided with a positioning groove located on the outer side of the aforementioned insulating body, and the aforementioned positioning groove is U-shaped; the aforementioned metal shielding surrounding is assembled to the aforementioned shell; the aforementioned metal shielding surrounding includes a mounting portion extending downward from the aforementioned cylindrical portion, the aforementioned mounting portion is U-shaped, and the aforementioned mounting portion includes a connecting portion, a first bent portion bent from one side of the aforementioned connecting portion, and a second bent portion bent from the other opposite side of the aforementioned connecting portion; the aforementioned mounting portion is assembled and fixed in the aforementioned positioning groove.

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

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

Compared with the prior art, the cylindrical portion of the metal shielding surround of the present invention includes a port portion and a folded piece that is folded 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 plug-in state to the separation state with the second backplane connector, the impedance change of the signal terminal is suppressed as much as possible, so that the impedance of the signal terminal tends to be stable.

100: First backplane connector

200’: Second backplane connector

21’: Shell

210’: base

2100’: Storage tank

2101’,2231a’: Top surface

2102’,2232a’: bottom surface

2103’: Mounting bump

2104’: Positioning slot

2108’: Storage Tank

2108a’: Main body slot

2108a1’: first curved surface

2108a2’: Second curved surface

2108a3’: The third curved surface

2108a4’: The fourth arc surface

2108b’: First groove

2108b1’: The first support

2108c’: Second groove

2108c1’: The second support

211’: First side wall

2111’: First top

2111a’: First guiding slope

2111b’: Notch

2112’: First medial surface

2113’: First bulge

2114’: First positioning groove

212’: Second side wall

2121’: Second top

2121a’: Second guiding slope

2122’: Second medial surface

2123’: Second bulge

2124’: Second positioning groove

213’: Containment space

2143’: First terminal receiving hole

2144’: Second terminal receiving hole

2145’: Divider

22’: Terminal module

221’: First signal terminal

2210’: First socket

221a’: first fixed part

221b’: first contact part

221b1’: First contact piece

221b2’: Second contact piece

221b3’: First slot

221b4’: The first expansion part

221b5’: The second expansion part

221b6’: First trumpet mouth

221c’: First mounting foot

221c1’: First fisheye hole

222’: Second signal terminal

2220’: Second socket

222a’: Second fixing part

222b’: Second contact part

222b1’: The third contact piece

222b2’: Fourth contact piece

222b3’: Second slot

222b4’: The third expansion part

222b5’: The fourth expansion part

222b6’: Second bell mouth

222c’: Second mounting foot

222c1’: Second fisheye hole

223’: Insulation block

2231’: Top end

2232’: bottom end

2232b’: convex block

2232c’: Positioning groove

2233’: Connection part

2234’: First opening

2235’: Second opening

2236’: convex strips

23’: Metal shielding surround

230’: Inner cavity

231’: Cylinder body

2311’: First side wall

2311a’: First wall section

2311b’: Second wall section

2311c’: Rivet connection

2311d’: dovetail groove

2311e’: dovetail protrusion

2311f’: First opening

2311g’: Second opening

2312’: Second side wall

2312a’: first convex hull

2313’: Third side wall

2313a’: The third opening

2314’: Fourth side wall

2314a’: Second convex hull

2315’: Deflection unit

2315a’: Guidance Department

232’: Installation Department

2320’: Connection part

232a’: Fifth side wall

232b’: Sixth side wall

232c’: Seventh side wall

232d’: Eighth side wall

2321’: First bend

2322’: Second bend

233’: Mounting feet

2341’: First positioning protrusion

2342’: Second positioning protrusion

235’: Port section

2361’: First folded piece

2361a’: first deflection part

2362’: Second folded piece

2362a’: second deflection part

2363’: The third fold

2363a’: The third deflection part

24’: Holding block

241’: Mounting strip

242’: Positioning slot

25’: Install the module

26’: Insulated body

260’: Foundation

2601’: Upper surface

2602’: Lower surface

2603’: Accommodation space

261’: First extension block

2611’: First side

2612’: First positioning groove

262’: Second extension block

2621’: Second side

2622’: Second positioning groove

263’: Accommodation space

301: First circuit board

302': Second circuit board

A: The frame part in Figure 7

A1-A1: First direction

A2-A2: Second direction

A3-A3: Third direction

B: The circled part in Figure 10

C: The circled part in Figure 11

D-D,F-F,H-H,I-I: line

E: The frame part in Figure 21

J: The frame part in Figure 35

Figure 1 is a three-dimensional schematic diagram of the backplane connector assembly of the present invention in the first embodiment.

Figure 2 is a partial three-dimensional exploded view of Figure 1.

FIG3 is another view of the second backplane connector in FIG2 when it is set on the second circuit board.

FIG. 4 is a three-dimensional exploded view of the second backplane connector and the second circuit board in FIG. 3 .

FIG. 5 is a front view of the second backplane connector in FIG. 3 .

Figure 6 is a rear view of Figure 5.

Figure 7 is a top view of Figure 5.

Figure 8 is a partial enlarged view of the frame portion A in Figure 7.

Figure 9 is a bottom view of Figure 5.

FIG. 10 is a partial exploded perspective view of the second backplane connector in FIG. 4 .

Figure 11 is a partial three-dimensional exploded view of Figure 10 from another angle.

Figure 12 is a partial enlarged view of the circled portion B in Figure 10.

Figure 13 is a partial enlarged view of the circled portion C in Figure 11.

Figure 14 is a partial three-dimensional exploded view of a terminal module in Figure 10.

Figure 15 is a partial three-dimensional exploded view of Figure 14 from another angle.

Figure 16 is a three-dimensional exploded view of the insulation body and terminal module in Figure 14.

Figure 17 is a three-dimensional exploded view of Figure 16 from another angle.

Figure 18 is a three-dimensional exploded view of Figure 16 from another angle.

FIG. 19 is a front view of the aforementioned terminal module in FIG. 16 .

Figure 20 is a rear view of Figure 19.

Figure 21 is a schematic cross-sectional view along line D-D in Figure 3.

Figure 22 is a partial enlarged view of the frame portion E in Figure 21.

FIG23 is a three-dimensional schematic diagram of the second embodiment when the second backplane connector is arranged on the second circuit board.

Figure 24 is a partial three-dimensional exploded view of Figure 23.

Figure 25 is a partial three-dimensional exploded view of Figure 24 from another angle.

Figure 26 is a further exploded perspective view of the second backplane connector in Figure 24.

Figure 27 is a three-dimensional exploded view of Figure 26 from another angle.

Figure 28 is a three-dimensional schematic diagram of the metal shielding surround in Figure 26.

Figure 29 is a three-dimensional schematic diagram of the metal shielding surround in Figure 27.

Figure 30 is a three-dimensional schematic diagram of Figure 29 from another angle.

Figure 31 is a three-dimensional cross-sectional view along the F-F line in Figure 28.

Figure 32 is a three-dimensional cross-sectional view along the H-H line in Figure 28.

Figure 33 is a left view of Figure 31.

Figure 34 is a left view of Figure 32.

Figure 35 is a schematic cross-sectional view along line I-I in Figure 23.

Figure 36 is a partial enlarged view of the frame portion J in Figure 35.

The following will be described in detail with reference to the drawings for the exemplary specific implementations of the present invention. If there are multiple specific implementations, the features in these implementations can be combined with each other without conflict. When the description involves drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary specific implementations do not represent all implementations consistent with the present invention; instead, they are only examples of devices, products and/or methods recorded in the scope of the patent application of the present invention and consistent with some aspects of the present invention.

The terms used in this invention are only for the purpose of describing specific implementation methods and are not intended to limit the scope of protection of this invention. The singular forms "one", "the" or "the" used in the description and patent application of this invention are also intended to include plural forms, unless the context clearly indicates other meanings.

It should be understood that the words used in the description of this work and the scope of the patent application, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the naming of features. Similarly, "one" or "a" and similar words do not indicate quantity restrictions, but indicate the existence of at least one. Unless otherwise specified, the words "front", "back", "upper", "lower" and similar words appearing in this work are only for the convenience of explanation, and are not limited to a specific position or a spatial orientation. "Include" or "includes" and similar words are an open expression, meaning that the elements appearing before "include" or "includes" cover the elements appearing after "include" or "includes" and their equivalents, which does not exclude that the elements appearing before "include" or "includes" may also include other elements. If "plural" appears in this work, its meaning refers to two and more than two.

As shown in Figures 1 and 2, the first embodiment of the present invention discloses a backplane connector assembly, which includes a first backplane connector 100, a second backplane connector 200' that matches the first backplane connector 100, a first circuit board 301 installed with the first backplane connector 100, and a second circuit board 302' installed with the second backplane connector 200'. In the first 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'.

Please refer to Figures 3 to 22. In the first embodiment of the present invention, the second backplane connector 200' includes a housing 21', a plurality of mounting modules 25' disposed in the housing 21', and a retaining block 24' disposed in the housing 21'. Each mounting module 25' includes an insulating body 26', a terminal module 22' disposed in the insulating body 26', and a metal shielding surround 23' sleeved on the insulating body 26'.

As shown in FIG. 10 and FIG. 11 , 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 part of the first backplane connector 100. In the first embodiment of the present creative diagram, the first side wall 211’ and the second side wall 212’ are parallel to each other and perpendicular to the base 210’.

In the first embodiment of the present creative diagram, 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'.

Please refer to Figures 10 to 13. The base 210' is also provided with a plurality of receiving grooves 2108' penetrating the top surface 2101' and the bottom surface 2102'. The plurality of receiving grooves 2108' are arranged in multiple rows along the third direction A3-A3 (e.g., the front-to-back direction), and the receiving grooves 2108' in two adjacent rows are arranged in a staggered manner, that is, the receiving grooves 2108' at the same position in the two adjacent rows are not aligned along the third direction A3-A3. In the first embodiment of the present creative diagram, each receiving groove 2108' includes a main body groove 2108a' located in the middle, a first groove 2108b' located on one side of the main body groove 2108a', and a second groove 2108c' located on the other side of the main body groove 2108a'. In the first implementation method of the present creative diagram, the aforementioned first groove 2108b’ is an arc-shaped groove and is recessed in a direction away from the aforementioned second groove 2108c’; the aforementioned second groove 2108c’ is an arc-shaped groove and is recessed in a direction away from the aforementioned first groove 2108b’; the aforementioned main groove 2108a’ is provided with a first arc-shaped surface 2108a1’, a second arc-shaped surface 2108a2’, a third arc-shaped surface 2108a3’ and a fourth arc-shaped surface 2108a4’ located at its four corners, wherein the aforementioned first groove 2108b’ is located in the middle of the aforementioned first arc-shaped surface 2108a1’ and the aforementioned third arc-shaped surface 2108a3’; the aforementioned second groove 2108c’ is located in the middle of the aforementioned second arc-shaped surface 2108a2’ and the aforementioned fourth arc-shaped surface 2108a4’; so as to maintain the symmetry of the aforementioned receiving groove 2108’. In the first embodiment of the present invention, the first groove 2108b' and the second groove 2108c' both penetrate the top surface 2101' upwards, but the first groove 2108b' and the second groove 2108c' do not penetrate the bottom surface 2102' downwards. The base 210' is provided with a first supporting surface 2108b1' located at the bottom of the first groove 2108b' and a second supporting surface 2108c1' located at the bottom of the second groove 2108c'.

As shown in FIG. 10 , the first side wall 211′ is provided with a first top surface 2111′, a first inner surface 2112′, a plurality of first protrusions 2113′ protruding inwardly from the first inner surface 2112′ into the receiving space 213′, and a first positioning groove 2114′ located between two adjacent first protrusions 2113′. In the first embodiment of the present creative diagram, 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 surface 2112′ is greater than the width of the first positioning groove 2114′ away from the first inner surface 2112′. In addition, the first top surface 2111' is provided with a first guiding slope 2111a' inclined toward the receiving space 213' and a notch 2111b' penetrating upward 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 an incorrect angle. The first guiding slope 2111a' further extends to the top of the plurality of first protrusions 2113'.

As shown in FIG. 11 , the second side wall 212′ is provided with a second top surface 2121′, a second inner surface 2122′, a plurality of second protrusions 2123′ protruding inwardly from the second inner surface 2122′ into the receiving space 213′, and a second positioning groove 2124′ located between two adjacent second protrusions 2123′. In the first embodiment of the present creative diagram, the second positioning groove 2124′ is a dovetail groove having two inclined surfaces disposed opposite to each other, so that the width of the second positioning groove 2124′ close to the second inner surface 2122′ is greater than the width of the second positioning groove 2124′ away from the second inner surface 2122′. In addition, the second top surface 2121' is provided with a second guiding slope 2121a' inclined toward the receiving space 213'. The second guiding slope 2121a' further extends to the top of the plurality of second protrusions 2123'. The first guiding slope 2111a' and the second guiding slope 2121a' are used to guide the first backplane connector 100 to be inserted into the receiving space 213'. In the first embodiment of the present creative diagram, 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'.

Please refer to Figures 16 to 18, the insulating body 26' includes a base 260', a first extension block 261' extending upward from one side of the base 260', and a second extension block 262' extending upward from the other side of the base 260'. The base 260' includes an upper surface 2601', a lower surface 2602', a terminal receiving hole penetrating upward through the upper surface 2601', and a receiving space 2603' penetrating downward through the lower surface 2602'. The first extension block 261' and the second extension block 262' both extend upward and protrude from the upper surface 2601'. The aforementioned insulating body 26' further includes a receiving space 263' between the aforementioned first extension block 261' and the aforementioned second extension block 262'. In the first embodiment of the present creative diagram, the aforementioned terminal receiving hole includes a first terminal receiving hole 2143' and a second terminal receiving hole 2144' arranged in parallel. The aforementioned first terminal receiving hole 2143' and the aforementioned second terminal receiving hole 2144' are both square holes. The aforementioned base 260' is also provided with a partition 2145' for separating the aforementioned first terminal receiving hole 2143' from the aforementioned second terminal receiving hole 2144'.

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

As shown in Figures 19 and 20, 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 set of differential signal terminals. In the first 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'.

From a structural point of view, 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 as to facilitate pressing into the conductive hole of the second circuit board 302' to achieve electrical conduction. The first contact portion 221b' is a two-half structure, including a first contact piece 221b1', a second contact piece 221b2', and a first insertion 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 better elasticity, improving the reliability when mating with the terminal of the mating connector. In addition, the first contact piece 221b1' is also provided with a first expansion portion 221b4' located at its end, and the second contact piece 221b2' is also provided with a second expansion portion 221b5' located at its end. The first expansion portion 221b4' and the second expansion portion 221b5' form a first bell mouth 221b6' connected to the first plug hole 2210' to guide the insertion of the terminal of the docking connector.

The second signal terminal 222' comprises 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 as to facilitate pressing 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 better elasticity, improving the reliability when mating with the terminal of the mating connector. In addition, the third contact piece 222b1' is also provided with a third expansion portion 222b4' located at its end, and the fourth contact piece 222b2' is also provided with a fourth expansion portion 222b5' located at its end. The third expansion portion 222b4' and the fourth expansion portion 222b5' form a second bell mouth 222b6' connected to the second jack 2220' to guide the insertion of the terminal of the docking connector.

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 dielectric constant change caused by the surrounding air medium of the signal terminal pair, thereby playing an impedance adjustment role.

In the first embodiment of the present creative diagram, the insulating block 223' is generally in an I-shape, and includes a top end 2231', a bottom end 2232', and a connecting portion 2233' connecting the top end 2231' and the bottom end 2232'. The top end 2231' is provided with a top surface 2231a', and the length of the top end 2231' is smaller than the length of the bottom end 2232'. The insulating block 223' further includes a first opening 2234' and a second opening 2235' located between the top end 2231' and the bottom end 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' to adjust the impedance. The bottom end portion 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 peripheral 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 first embodiment of the present invention, the ridge 2236' is located in the middle of the two sides of the top end 2231' and in the middle of the front end surface of the connecting portion 2233'. Of course, in other embodiments, the ridge 2236' can also be arranged on the two sides of the bottom end 2232' and/or the front end surface of the bottom end 2232'. The ridge 2236' is used to abut against the insulating body 26' to improve the installation reliability.

Referring to FIG. 14, FIG. 15 and FIG. 22, in the first embodiment of the present invention, the metal shielding surrounding member 23' is formed by punching, bending and riveting a metal plate, and includes a cylindrical portion 231', a mounting portion 232' extending downward from the cylindrical portion 231', a plurality of mounting feet 233' extending downward from the mounting portion 232', and a positioning protrusion located between the cylindrical portion 231' and the mounting portion 232'. The cylindrical portion 231' includes a first side wall 2311', a second side wall 2312', a third side wall 2313' and a fourth side wall 2314' which are 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 form a fully enclosed shielding cavity. In a first embodiment of the present creative diagram, 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 first 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'. In the first embodiment of the present invention, the ends of the second side wall 2312' and the fourth side wall 2314' are provided with deflection parts 2315' that bend inwards, and these deflection parts 2315' are independent of each other so as to bend independently and avoid mutual interference. Each deflection part 2315' is provided with a guide part 2315a' located on its outer surface. In the first embodiment of the present invention, the guide part 2315a' is in the shape of an arc that bends inwards. By providing the deflection portion 2315', a contraction opening can be formed at the end of the metal shielding surrounding member 23', and the guide portion 2315a' can facilitate the deflection portion 2315' to be guided and inserted into the first backplane connector 100. In the first 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 riveting line 2311c' is formed at the junction of the first wall portion 2311a' and the second wall portion 2311b'. In the first embodiment of the present invention, 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 interlocked. In other embodiments of the present invention, only at least three of the connected first side wall 2311', second side wall 2312', third side wall 2313' and fourth side wall 2314' may be provided with an inwardly bent deflection portion 2315' at their ends. For example, the inwardly bent deflection portion 2315' is provided at the ends of the second side wall 2312', third side wall 2313' and fourth side wall 2314' that are connected in sequence.

In the first embodiment of the present invention, the mounting portion 232' includes a fifth sidewall 232a', a sixth sidewall 232b', a seventh sidewall 232c' and an eighth sidewall 232d' connected in sequence, wherein the fifth sidewall 232a' is opposite to the seventh sidewall 232c', and the sixth sidewall 232b' is opposite to the eighth sidewall 232d', so as to form a fully enclosed shielding cavity. In the first embodiment of the present invention, the area of the fifth sidewall 232a' and the seventh sidewall 232c' is larger than the area of the sixth sidewall 232b' and the eighth sidewall 232d'.

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

In the first embodiment of the present creative diagram, the fifth side wall 232a' and the first side wall 2311' are located in the same plane, that is, the fifth side wall 232a' and the first side wall 2311' are flush with each other; the seventh side wall 232c' and the third side wall 2313' are located in the same plane, that is, the seventh side wall 232c' and the third side wall 2313' are flush with each other. Referring to FIG. 22 , 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 aforementioned positioning protrusions include a first positioning protrusion 2341' located between the aforementioned sixth side wall 232b' and the aforementioned second side wall 2312' and a second positioning protrusion 2342' located between the aforementioned eighth side wall 232d' and the aforementioned fourth side wall 2314'. The aforementioned first positioning protrusion 2341' is in an arc shape and protrudes outward from the aforementioned seventh side wall 232c' and the aforementioned third side wall 2313'. The aforementioned second positioning protrusion 2342' is in an arc shape and protrudes outward from the aforementioned eighth side wall 232d' and the aforementioned fourth side wall 2314'.

In the first embodiment of the present invention, the second side wall 2312' is also provided with a first convex bump 2312a' formed by inward pressing and clamped in the first positioning groove 2612'; the fourth side wall 2314' is also provided with a second convex bump 2314a' formed by inward pressing and clamped in the second positioning groove 2622'.

The aforementioned multiple mounting feet 233' extend downwardly from the aforementioned sixth side wall 232b' and the aforementioned eighth side wall 232d' respectively.

Please refer to Figures 14 and 15. In the first embodiment of the present invention, the cylindrical portion 231' is provided with a port portion 235', and the port portion 235' is roughly rectangular. The deflection portion 2315' is bent inward from both sides of the port portion 235'. The first wall portion 2311a' includes a first inverted piece 2361' formed by bending from the port portion 235' into the inner cavity 230', and the first inverted piece 2361' is at least partially attached to the inner wall surface of the first wall portion 2311a'. Similarly, the second wall portion 2311b' includes a second inverted piece 2362' formed by bending from the port portion 235' into the inner cavity 230', and the second inverted piece 2362' is at least partially attached to the inner wall surface of the second wall portion 2311b'. The third side wall 2313' includes a third inverted piece 2363' formed by bending from the port 235' toward the inner cavity 230', and the third inverted piece 2363' is at least partially attached to the inner wall surface of the third side wall 2313'. The first inverted piece 2361', the second inverted piece 2362' and the third inverted piece 2363' are collectively referred to as inverted pieces.

In the first implementation method of the present creative diagram, the width of the first inverted piece 2361’ and the second inverted piece 2362’ along the second direction A2-A2 (for example, the left-right direction) is the same; the length of the first inverted piece 2361’ and the second inverted piece 2362’ along the first direction A1-A1 (for example, the up-down direction) is the same; the width of the third inverted piece 2363’ along the second direction A2-A2 is greater than the width of the first inverted piece 2361’ and also greater than the width of the second inverted piece 2362’; the length of the third inverted piece 2363’ along the first direction A1-A1 is equal to the length of the first inverted piece 2361’ and also equal to the length of the second inverted piece 2362’. In the first embodiment of the present creative diagram, the first direction A1-A1, the second direction A2-A2 and the third direction A3-A3 are perpendicular to each other. The folded sheet does not overlap with the first contact portion 221b' and the second contact portion 222b' along the first direction A1-A1.

Compared with the prior art, the present invention can adjust the impedance of the signal terminal to a certain extent by providing the first inverted piece 2361', the second inverted piece 2362' and the third inverted piece 2363', so that when the first backplane connector 100 and the second backplane connector 200' change from the plugged state to the separated state, the impedance change of the signal terminal is suppressed as much as possible, so that the impedance of the signal terminal tends to be stable.

As shown in FIG. 11 , the aforementioned retaining block 24’ is used to position and limit the mounting portion 232’ of the aforementioned metal shielding surrounding member 23’. Specifically, the aforementioned retaining block 24’ includes a plurality of mounting bars 241’ arranged in a staggered manner and connected as a whole, wherein each mounting bar 241’ is provided with a positioning groove 242’ for positioning the aforementioned mounting portion 232’.

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

When the first backplane connector 100 and the second backplane connector 200' are matched, 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 barrel 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'.

In the first embodiment of the present invention, the metal shielding surround 23' of the present invention includes a cylindrical portion 231' and a mounting portion 232' extending downward from the cylindrical portion 231'. The cylindrical portion 231' and the mounting portion 232' are both surrounded by four side walls to form a fully enclosed shielding cavity, thereby improving the shielding effect. In addition, the fifth side wall 232a' is connected to the first side wall 2311' and is located on the same side of the metal shielding surround 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 surround 23'; the seventh side wall 232c' is connected to the third side wall 2311' and is located on the same side of the metal shielding surround 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 surround 23'; 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 2312' 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.

Please refer to Figures 23 to 36. In the second embodiment of the second backplane connector 200' of the present invention, the second backplane connector 200' includes a housing 21', a plurality of terminal modules 22' disposed in the housing 21', a retaining block 24' disposed in the housing 21', and a metal shielding surround 23' sleeved on the insulating body 26'. The second backplane connector 200' is used to install a second circuit board 302'. When assembling the second backplane connector 200', the terminal module 22' and the metal shielding surround 23' are assembled to the housing 21' in opposite directions. For example, the terminal module 22' is assembled to the housing 21' from bottom to top, and the metal shielding surround 23' is assembled to the housing 21' from top to bottom.

The main difference between the second backplane connector 200' in the second embodiment of the present invention and the second backplane connector 200' in the first embodiment of the present invention is that: in the second backplane connector 200' in the second embodiment of the present invention, the plurality of insulating bodies 26' and the base 210' of the shell 21' are integrally formed; in addition, in the second backplane connector 200' in the second embodiment of the present invention, the metal shielding surround 23' and the metal shielding surround 23' in the first embodiment have some structural differences. The following describes the main difference between the second backplane connector 200' in the second embodiment of the present invention and the second backplane connector 200' in the first embodiment of the present invention. For the same or corresponding parts of the two, please refer to the relevant description in the first embodiment of the present invention.

In the second embodiment of the second backplane connector 200' of the present invention, the base 210' is provided with a positioning groove 2104' located on the outer side of the insulating body 26', and the positioning groove 2104' is U-shaped.

In the second embodiment of the second backplane connector 200' of the present invention, the aforementioned metal shielding surround 23' is assembled on the aforementioned shell 21' and sleeved on the aforementioned insulating body 26'.

Please refer to Figures 23 to 36. In the second embodiment of the present invention, the metal shielding surround 23' is formed by punching, bending and riveting a piece of metal plate, and includes a cylindrical portion 231', a mounting portion 232' extending downward from the cylindrical portion 231', and a plurality of mounting feet 233' extending downward from the mounting portion 232'. The cylindrical 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 form a fully enclosed shielding cavity. In the second embodiment of the present invention, 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 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'. In the second embodiment of the present invention, the ends of the second side wall 2312' and the fourth side wall 2314' are both provided with inwardly bent deflection parts 2315', and these deflection parts 2315' are independent of each other so as to bend independently to avoid mutual interference. Each deflection portion 2315' is provided with a guide portion 2315a' located on its outer surface. In the second embodiment of the present invention, the guide portion 2315a' is in the shape of an arc that bends inward. By providing the deflection portion 2315', a contraction opening can be formed at the end of the metal shielding surround 23', and the guide portion 2315a' can facilitate the deflection portion 2315' to be guided and inserted into the first backplane connector 100. In the second 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 riveting line 2311c' is formed at the junction of the first wall portion 2311a' and the second wall portion 2311b'. In the second embodiment of the present invention, 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 interlocked with each other. In other embodiments of the present invention, only at least three of the connected first side wall 2311', second side wall 2312', third side wall 2313' and fourth side wall 2314' may be provided with an inwardly bent deflection portion 2315' at their ends. For example, an inwardly bent deflection portion 2315' is provided 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.

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

In the second embodiment of the present invention, the cylindrical portion 231' is provided with a port portion 235', and the port portion 235' is roughly rectangular. The deflection portion 2315' is bent inward from both sides of the port portion 235'. The first wall portion 2311a' includes a first reverse folded piece 2361' formed by bending from the port portion 235' into the inner cavity 230', and the first reverse folded piece 2361' is attached to the inner wall surface of the first wall portion 2311a'. Similarly, the second wall portion 2311b' includes a second reverse folded piece 2362' formed by bending from the port portion 235' into the inner cavity 230', and the second reverse folded piece 2362' is attached to the inner wall surface of the second wall portion 2311b'. The aforementioned third side wall 2313' includes a third inverted piece 2363' which is folded from the aforementioned end portion 235' toward the aforementioned inner cavity 230', and the aforementioned third inverted piece 2363' is attached to the inner wall surface of the aforementioned third side wall 2313'. In the second implementation method of the present creative diagram, the width of the first inverted piece 2361’ and the second inverted piece 2362’ along the second direction A2-A2 (for example, the left-right direction) is the same; the length of the first inverted piece 2361’ and the second inverted piece 2362’ along the first direction A1-A1 (for example, the up-down direction) is the same; the width of the third inverted piece 2363’ along the second direction A2-A2 is greater than the width of the first inverted piece 2361’ and also greater than the width of the second inverted piece 2362’; the length of the third inverted piece 2363’ along the first direction A1-A1 is equal to the length of the first inverted piece 2361’ and also equal to the length of the second inverted piece 2362’. In one implementation of the present invention, the first inverted piece 2361', the second inverted piece 2362' and the third inverted piece 2363' all at least partially protrude into the accommodation space 263' of the insulating body 26'.

Please refer to Figures 29, 30 and 36. In the implementation method of the present creative diagram, the first wall portion 2311a’ of the aforementioned first side wall 2311’ is also provided with a first opening 2311f’ that penetrates the aforementioned first wall portion 2311a’ and is connected to the aforementioned inner cavity 230’; the second wall portion 2311b’ of the aforementioned first side wall 2311’ is also provided with a second opening 2311g’ that penetrates the aforementioned second wall portion 2311b’ and is connected to the aforementioned inner cavity 230’; the aforementioned third side wall 2313’ is also provided with a plurality of third openings 2313a’ that penetrate the aforementioned third side wall 2313’ and are connected to the aforementioned inner cavity 230’. The first inverted sheet 2361' is provided with a first deflection portion 2361a' located at its free end, and the first deflection portion 2361a' is at least partially received in the first opening 2311f' to seal the first opening 2311f', thereby improving the shielding effect; the second inverted sheet 2362' is provided with a second deflection portion 2362a' located at its free end, and the second deflection portion 2362a' is at least partially received in the second opening 2311g' to seal the second opening 2311g', thereby improving the shielding effect; the third inverted sheet 2363' is provided with a plurality of third deflection portions 2363a' located at its free end, and the third deflection portions 2363a' are at least partially received in the plurality of third openings 2313a' to seal the third opening 2313a', thereby improving the shielding effect. In the implementation method of the present creative diagram, the outer surface of the first deflection portion 2361a' is coplanar with the outer surface of the first wall portion 2311a', the outer surface of the second deflection portion 2362a' is coplanar with the outer surface of the second wall portion 2311b', and the outer surface of the third deflection portion 2363a' is coplanar with the outer surface of the third side wall 2313'.

Compared with the prior art, the present invention can adjust the impedance of the signal terminal to a certain extent by providing the first inverted piece 2361', the second inverted piece 2362' and the third inverted piece 2363', so that when the first backplane connector 100 and the second backplane connector 200' change from the plugged state to the separated state, the impedance change of the signal terminal is suppressed as much as possible, so that the impedance of the signal terminal tends to be stable.

The above implementations are only used to illustrate this creation and are not intended to limit the technical solutions described in this creation. The understanding of this creation should be based on the technical personnel in the relevant technical field. Although this specification has described this creation in detail with reference to the above implementations, ordinary technical personnel in this field should understand that they can still modify or replace this creation with equivalents, and all technical solutions and improvements that do not deviate from the spirit and scope of this creation should be covered within the scope of the patent application for this creation.

23’: Metal shielding surround

230’: Inner cavity

231’: Cylinder body

2312’: Second side wall

2313’: Third side wall

2315’: Deflection unit

2315a’: Guidance Department

232’: Installation Department

233’: Mounting feet

235’: Port section

2361’: First folded piece

2362’: Second folded piece

2363’: The third fold

A1-A1: First direction

A2-A2: Second direction

F-F,H-H: line

Claims (20)

A backplane connector, comprising: a shell, the shell 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 a 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 being at least partially disposed in the terminal receiving hole; and a metal shielding surround, the metal shield The shielding surrounding piece is sleeved on the aforementioned insulating body; the aforementioned metal shielding surrounding piece includes a cylindrical body portion, the aforementioned cylindrical body portion protrudes into the aforementioned receiving space, the aforementioned cylindrical body portion includes a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the aforementioned first side wall is arranged opposite to the aforementioned third side wall, the aforementioned second side wall is arranged opposite to the aforementioned fourth side wall, and the aforementioned first side wall, the aforementioned second side wall, the aforementioned third side wall and the aforementioned fourth side wall form an inner cavity; the aforementioned cylindrical body portion includes a port portion and a reverse folded piece bent from the aforementioned port portion into the aforementioned inner cavity, and the aforementioned reverse folded piece at least partially extends into the aforementioned inner cavity along the first direction. The backplane connector as described in claim 1, wherein: the aforementioned folded piece includes a first folded piece and a second folded piece provided on the aforementioned first side wall, wherein the aforementioned first folded piece and the aforementioned second folded piece are at least partially attached to the inner wall surface of the aforementioned first side wall. The backplane connector as described in claim 2, wherein: the aforementioned folded piece includes a third folded piece provided on the aforementioned third side wall, wherein the aforementioned third folded piece at least partially abuts against the inner wall surface of the aforementioned third side wall. The backplane connector as described in 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 riveting line is formed at the junction of the first wall portion and the second wall portion; the first inverted piece is provided on the first wall portion, and the second inverted piece is provided on the second wall portion. The backplane connector as described in 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. The backplane connector as described in 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. The backplane connector as described in claim 1, wherein: the base is provided with a receiving groove penetrating the base; the backplane connector includes a mounting module, the mounting module is assembled in the receiving groove, the mounting module includes the insulating body, the terminal module and the metal shielding surround; the insulating body and the shell are separately provided. The backplane connector as described in claim 7, wherein: the aforementioned metal shielding surrounding member includes a mounting portion extending integrally from the aforementioned cylindrical portion, the aforementioned 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 aforementioned fifth side wall is arranged opposite to the aforementioned seventh side wall, the aforementioned sixth side wall is arranged opposite to the aforementioned eighth side wall, and the aforementioned fifth side wall, the aforementioned sixth side wall, the aforementioned seventh side wall and the aforementioned 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 surrounding piece; the sixth side wall is connected to the second side wall and is located on the same side of the metal shielding surrounding piece; the seventh side wall is connected to the third side wall and is located on the same side of the metal shielding surrounding piece; the eighth side wall is connected to the fourth side wall and is located on the same side of the metal shielding surrounding piece; the mounting portion is fixed in the receiving groove. The backplane connector as described in 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. The backplane connector as described in 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. The backplane connector as described in claim 9, wherein: the metal shielding surrounding member 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 body groove located in the middle, a first groove located on one side of the main body groove and a second groove located on the other side of the main body groove; the mounting portion is clamped in the main body groove, the first positioning protrusion is clamped in the first groove, and the second positioning protrusion is clamped in the second groove. The backplane connector as described in 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 supported on the first supporting surface, and the second positioning protrusion is supported on the second supporting surface. The backplane connector as claimed in claim 11, wherein: the main body slot 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. The backplane connector as described in claim 8, wherein: the aforementioned metal shielding surround further includes a plurality of mounting feet extending from the aforementioned mounting portion; the aforementioned backplane connector further includes a retaining block disposed at the bottom of the aforementioned housing, the aforementioned retaining block being provided with a positioning groove for positioning the aforementioned mounting portion; the aforementioned plurality of mounting feet passing through the aforementioned retaining block. A backplane connector as described in claim 8, wherein: the terminal module includes an insulating block fixed on the first signal terminal and the second signal terminal; the insulating body includes a base, a first extension block extending upward from one side of the base, and a second extension block extending upward from the other side of the base; the base 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 connected to each other through the first and second terminals. The second signal terminal is received in the aforementioned first terminal receiving hole and the aforementioned second terminal receiving hole respectively; the aforementioned first extension block is provided with an outer first side surface and a first positioning groove inwardly recessed from the aforementioned first side surface; the aforementioned second extension block is provided with an outer second side surface and a second positioning groove inwardly recessed from the aforementioned second side surface; the aforementioned second side wall is provided with a first convex bump protruding inwardly and clamped in the aforementioned first positioning groove; the aforementioned fourth side wall is provided with a second convex bump protruding inwardly and clamped in the aforementioned second positioning groove. As described in claim 15, the backplane connector, 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. As described in claim 15, the backplane connector, wherein: the first positioning groove passes through the top surface of the first extension block upward, and the second positioning groove passes through the top surface of the second extension block upward. The backplane connector as claimed in claim 1, wherein: the insulating body and the base are integrally formed, the base is provided with a positioning groove located on the outer side of the insulating body, and the positioning groove is U-shaped; the metal shielding surround is assembled to the shell; the metal shielding surround 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 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; the mounting portion is assembled and fixed in the positioning groove. The backplane connector as described in claim 2, wherein: 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 received in the first opening. As described in claim 15, the backplane connector, 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, and the first extension block and the second extension block both extend upward and protrude from the upper surface.