Wire-to-board connector

Abstract

The present application discloses a wire-to-board connector, which relates to the technical field of connectors and is used to solve the problem of electromagnetic interference existing in existing wire-to-board connectors. The wire-to-board connector provided by the present application includes a wire-end connector and a board-end connector. The wire-to-board connector further includes a wire-end signal terminal pair and a ground board disposed in the wire-end connector, and a board-end signal terminal pair and a ground terminal disposed in the board-end connector. The wire-end signal terminal pair has a pair of contact heads extending towards the board-end connector, the ground board has a ground pin extending towards the board-end connector, the board-end signal terminal pair has a head contact extending towards the wire-end connector, and the ground terminal has a ground head extending towards the wire-end connector. Among them, the pair of contact heads and the head contact are in contact to form a signal docking position, and the ground pin and the ground head are in contact to form a ground docking position. In the docking direction Z, the signal docking position and the ground docking position are staggered.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and particularly to a wire-to-board connector. Background Art

[0002] Input / output connectors include board-to-board connectors, wire-to-wire connectors, and wire-to-board connectors. Among them, a wire-to-board connector includes a wire-end connector connected to a cable and a board-end connector connected to a circuit board.

[0003] However, in the field of high-speed connectors, the signal transmission rate is getting faster and faster, and the accompanying signal crosstalk will also increase. At the same time, since the docking position of the terminal group in the board-end connector and the terminal group in the wire-end connector in the prior art is in the same horizontal plane in the docking direction of the two, electromagnetic interference exists at the docking position of the board-end connector and the wire-end connector.

[0004] Therefore, there is an urgent need to provide a new type of wire-to-board connector with good electromagnetic interference prevention effect. Summary of the Invention

[0005] The present application provides a wire-to-board connector to solve the problem of electromagnetic interference existing in the wire-to-board connector in the prior art.

[0006] To achieve the above object, the wire-to-board connector provided by the present application includes a wire-end connector and a board-end connector docked on the wire-end connector along the docking direction Z. The wire-to-board connector further includes:

[0007] A wire-end terminal module, disposed in the wire-end connector, and including a wire-end signal terminal pair and a grounding plate. The wire-end signal terminal pair has a mating contact extending toward the board-end connector, and the grounding plate has a grounding pin extending toward the board-end connector;

[0008] A board-end terminal module, disposed in the board-end connector, and including a board-end signal terminal pair and a grounding terminal. The board-end signal terminal pair has a head contact extending toward the wire-end connector, and the grounding terminal has a grounding head extending toward the wire-end connector;

[0009] Wherein, when the wire-end connector and the board-end connector are mated, the mating contact and the head contact are in contact to form a signal docking position, and the grounding pin and the grounding head are in contact to form a grounding docking position. In the docking direction Z, the signal docking position and the grounding docking position are staggered.

[0010] In some embodiments of the present application, both the grounding pin and the head contact are in a flat plate shape. A mating contact point protruding towards the head contact is formed on the mating contact head, and a grounding contact point protruding towards the grounding pin is formed on the grounding head. The mating contact point and the grounding contact point are offset in the docking direction Z.

[0011] In some embodiments of the present application, the grounding plate includes a grounding main board. The grounding main board has a top edge and a bottom edge in sequence in the docking direction Z. A plurality of spaced-apart grounding pins are formed on the top edge, and a grounding frame portion is formed on the bottom edge.

[0012] The line-end signal terminal pair has a base portion and a wiring contact head that are connected to the mating contact head and are formed in sequence along the docking direction Z. The grounding frame portion is used to surround the wiring contact head.

[0013] In some embodiments of the present application, the grounding main board has a shielding inner surface and a shielding outer surface that are parallel to the docking direction Z and are oppositely arranged. The grounding pins are located on the shielding outer surface, and the grounding frame portion is located on the shielding inner surface. The grounding pins extend in a plane substantially parallel to the grounding main board, the grounding frame portion extends in a plane substantially perpendicular to the grounding main board, and the extending directions of the wiring contact head and the grounding frame portion are the same.

[0014] In some embodiments of the present application, the grounding main board also has a front edge and a rear edge perpendicular to the top edge. Plug-in portions are formed on both the front edge and the rear edge. The plug-in portions extend in a plane substantially perpendicular to the grounding main board and are located on the shielding outer surface.

[0015] The line-end terminal module further includes a long-strip-shaped insulating support frame for supporting the line-end signal terminal pair and the grounding plate. A positioning portion connected to the plug-in portion is provided on the insulating support frame.

[0016] In some embodiments of the present application, both the line-end signal terminal pair and the grounding plate have a plurality of them, which are spaced apart along the length direction of the insulating support frame and are held within the insulating support frame.

[0017] The board-end terminal module further includes an insulating bracket that is substantially long-strip-shaped. Both the board-end signal terminal pair and the grounding terminal have a plurality of them, which are spaced apart along the length direction of the insulating bracket and are held within the insulating bracket to form an integrated structure.

[0018] In some embodiments of the present application, the wire-end connector includes an insulating housing and two sets of wire-end terminal modules installed in the insulating housing. The insulating housing is generally in a convex shape and has a receiving hole with an opening facing the board-end connector. The receiving hole has a vertical first inner wall and a second inner wall facing each other in its length direction. One of the two sets of wire-end terminal modules is arranged on the first inner wall, and the other is arranged on the second inner wall.

[0019] The board-end connector includes an insulating base and two sets of board-end terminal modules installed in the insulating base. The insulating base is generally in a box-shaped structure with an opening facing the wire-end connector. A convex block structure extending towards the wire-end connector is provided in the box-shaped structure. The convex block structure has a first mounting side wall and a second mounting side wall arranged opposite to each other. When the wire-end connector and the board-end connector are mated, the first mounting side wall faces the first inner wall, and the second mounting side wall faces the second inner wall. One of the two sets of board-end terminal modules is arranged on the first mounting side wall, and the other is arranged on the second mounting side wall.

[0020] In some embodiments of the present application, the insulating housing has a first insulating portion and a second insulating portion arranged in sequence along the docking direction Z. The insulating base is sleeved on the outer periphery of the first insulating portion. At least a part of the outer side wall of the first insulating portion is in an inverted conical shape to form a guiding surface, and a conical surface matching the guiding surface is formed on the inner wall surface of the insulating base.

[0021] In some embodiments of the present application, the board-end signal terminal has a tail contact opposite to the head contact, and the grounding terminal also has a grounding tail opposite to the grounding head. The tail contact and the grounding tail are at least partially exposed on the mounting surface of the insulating base facing away from the wire-end connector and are used for electrical connection with the circuit board; wherein,

[0022] The insulating base has a first side wall facing the first mounting side wall and a second side wall facing the second mounting side wall. The part of the first side wall and / or the second side wall close to the circuit board is an inclined surface, and there is an included angle between the inclined surface and the circuit board.

[0023] In some embodiments of the present application, the board-end connector further includes an L-shaped connecting plate. A connecting portion is provided on the insulating base. The L-shaped connecting plate has a first plate portion and a second plate portion perpendicular to each other. The first plate portion is connected to the connecting portion, and the second plate portion is connected to the circuit board.

[0024] In some embodiments of the present application, a plurality of positioning through slots extending along the docking direction Z are provided at intervals on the first inner wall and the second inner wall, and a plurality of the docking contacts and a plurality of the grounding pins are respectively arranged in the corresponding positioning through slots;

[0025] A plurality of terminal through slots extending along the docking direction Z are provided at intervals on the first mounting side wall and the second mounting side wall, and a plurality of the board-end signal terminal pairs and a plurality of the grounding terminals are respectively arranged in the corresponding terminal through slots.

[0026] In some embodiments of the present application, the second insulating portion has a horizontal plane facing the first insulating portion and a stepped surface facing away from the first insulating portion, and the distance between the stepped surface and the horizontal plane decreases in sequence from the direction of the first inner wall to the second inner wall.

[0027] In some embodiments of the present application, the wire-end connector further includes a metal shell arranged on the periphery of the insulating housing and a bottom plate arranged on the side of the stepped surface facing away from the horizontal plane. Combining protrusions are provided on the outer sides of the two side walls of the metal shell in the length direction, and the combining protrusions can increase the combining force between the metal shell and the bottom plate.

[0028] In some embodiments of the present application, the wire-to-board connector further includes:

[0029] A fixing frame, which is arranged on the periphery of the metal shell and has a gap S between the fixing frame and the outer peripheral side of the metal shell;

[0030] A limiting structure for limiting the relative position of the metal shell and the fixing frame in the docking direction Z. The limiting structure includes a screw, a gasket, and a threaded hole arranged along the docking direction Z. The threaded hole is arranged on the metal shell or the fixing frame, and a part of the gasket covers the metal shell and another part covers the fixing frame.

[0031] Compared with the prior art, in the present application, a signal docking position is formed by the contact of the docking contact and the head contact, and a grounding docking position is formed by the contact of the grounding pin and the grounding head. In the docking direction Z, the signal docking position and the grounding docking position are staggered, so that there is an appropriate distance between the signal docking position and the grounding docking position in the docking direction Z. Thereby, electromagnetic interference between the wire-end connector and the board-end connector can be avoided, and further the anti-crosstalk effect of the above-mentioned wire-to-board connector is improved. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 is an exploded view of the wire-to-board connector in the embodiment of the present application;

[0034] Figure 2 is a schematic structural diagram of the wire-end terminal module in the embodiment of the present application;

[0035] Figure 3 is a schematic structural diagram of the board-end terminal module in the embodiment of the present application;

[0036] Figure 4 is a schematic structural diagram after the cooperation of the wire-end terminal module and the board-end terminal module in the embodiment of the present application;

[0037] Figure 5 is a schematic structural diagram of the insulating housing in the wire-end connector in the embodiment of the present application;

[0038] Figure 6 is a schematic structural diagram of the insulating base in the board-end connector in the embodiment of the present application;

[0039] Figure 7 is an exploded view of the board-end connector in the embodiment of the present application;

[0040] Figure 8 is an exploded view of the wire-end connector in the embodiment of the present application;

[0041] Figure 9 is a schematic external structure diagram of the wire-end connector in the embodiment of the present application;

[0042] Figure 10 is an assembly diagram of the wire-end connector in the embodiment of the present application.

[0043] The main reference numerals in the drawings of the present application specification are described as follows:

[0044] 10 - wire-end connector;

[0045] 100 - wire-end terminal module;

[0046] 11 - wire-end signal terminal pair; 111 - pair contact head; 112 - base; 113 - wiring contact head;

[0047] 12 - grounding plate; 121 - grounding pin; 122 - grounding main board; 123 - grounding surrounding frame part; 124 - insertion part;

[0048] 13 - Insulating support frame; 131 - Positioning part;

[0049] 14 - Insulating housing; 141 - Accommodating hole; 1411 - First inner wall; 1412 - Second inner wall; 1413 - Positioning through groove; 142 - First insulating part; 1421 - Guide surface; 143 - Second insulating part; 1431 - Horizontal surface; 1432 - Step surface;

[0050] 15 - Metal shell; 151 - Combining protrusion; 152 - Mounting step hole; 153 - Arc-shaped groove;

[0051] 16 - Bottom plate;

[0052] 17 - Fixed frame; 171 - Wire threading opening; 172 - Arc-shaped protrusion;

[0053] 18 - Limiting structure; 181 - Screw; 182 - Washer; 183 - Threaded hole;

[0054] 20 - Board-end connector;

[0055] 200 - Board-end terminal module;

[0056] 21 - Board-end signal terminal pair; 211 - Head contact; 212 - Tail contact; 213 - Body part;

[0057] 22 - Grounding terminal; 221 - Grounding head; 222 - Grounding tail; 223 - Base part;

[0058] 23 - Insulating bracket;

[0059] 24 - Insulating base; 241 - Bump structure; 2411 - First mounting side wall; 2412 - Second mounting side wall; 242 - Tapered surface; 243 - First side wall; 244 - Second side wall; 245 - Inclined surface; 246 - Terminal through groove; 247 - Connecting part;

[0060] 25 - L-shaped connecting plate; 251 - First plate part; 252 - Second plate part;

[0061] 30 - Cable;

[0062] 40 - Circuit board. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0064] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0065] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0066] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0067] The present application provides a wire-to-board connector, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. And in the following embodiments, each embodiment has its own emphasis. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] Refer to Figures 1 to 4, this application provides a wire-to-board connector, which includes a wire-end connector 10 and a board-end connector 20 docked on the wire-end connector 10 along the docking direction Z. The wire-end connector 10 further includes a wire-end terminal module 100 disposed within the wire-end connector 10. The wire-end terminal module 100 includes wire-end signal terminal pairs 11 and a ground board 12. The wire-end signal terminal pairs 11 have mating contacts 111 extending toward the board-end connector 20, and the ground board 12 has ground pins 121 extending toward the board-end connector 20. The board-end connector 20 includes a board-end terminal module 200 disposed within the board-end connector 20. The board-end terminal module 200 includes board-end signal terminal pairs 21 and ground terminals 22. The board-end signal terminal pairs 21 have head contacts 211 extending toward the wire-end connector 10, and the ground terminals 22 have ground heads 221 extending toward the wire-end connector 10. Wherein, when the wire-end connector 10 and the board-end connector 20 are mated, the mating contacts 111 and the head contacts 211 contact to form a signal docking position, and the ground pins 121 and the ground heads 221 contact to form a ground docking position. In the docking direction Z (i.e., Figure 1 the direction from top to bottom as shown), the signal docking position and the ground docking position are staggered.

[0069] Compared with the prior art, in this application, the mating contacts 111 and the head contacts 211 contact to form a signal docking position, and the ground pins 121 and the ground heads 221 contact to form a ground docking position. In the docking direction Z (i.e., Figure 1 the direction from top to bottom as shown), the signal docking position and the ground docking position are staggered, so that there is an appropriate distance between the signal docking position and the ground docking position in the docking direction Z, thereby avoiding electromagnetic interference between the wire-end connector 10 and the board-end connector 20, and further improving the anti-crosstalk effect of the above wire-to-board connector.

[0070] Referring to Figure 4 , in this application, both the ground pins 121 and the head contacts 211 are in the shape of flat plates. A mating contact point protruding toward the head contact 211 is formed on the mating contact 111, and a ground contact point protruding toward the ground pin 121 is formed on the ground head 221. The mating contact point and the ground contact point are staggered in the docking direction Z. By controlling the positions of the mating contact point and the ground contact point, the distance between the signal docking position and the ground docking position in the docking direction Z can be controlled, and the above solution is easy to implement.

[0071] In other embodiments of the present application, the grounding pin 121 and the mating contact head 111 are in a flat plate shape, and a contact structure is formed on the grounding head 221 and the head contact 211. Compared with this solution, the foregoing setting of the present application can also ensure that the signal docking positions of the line-end signal terminal pair 11 and the board-end signal terminal pair 21 are staggered from the grounding docking positions of the grounding plate 12 and the grounding terminal 22 in the stacking direction of the two (i.e., the thickness direction of the grounding plate 12), further optimizing the crosstalk performance and improving the anti-crosstalk effect of the above line-to-board connector.

[0072] Exemplarily, the grounding contact on the grounding head 221 of the present application is obtained by bending the area near the end of the grounding head 221 into an arch protruding towards the grounding pin 121. Similarly, the mating contact point of the mating contact head 111 is obtained by bending the area near the end of the mating contact head 111 into an arch protruding towards the head contact 211. Alternatively, the grounding contact can also be formed by forming a grounding spring piece that bends towards the grounding pin 121 in the area near the end of the grounding head 221, and the mating contact point is formed by forming a docking spring piece that bends towards the head contact 211 in the area near the end of the mating contact head 111.

[0073] Continuing to refer to Figures 1 to 4 , more specifically, the above-mentioned mating contact head 111 and the head contact 211 are in contact to form a signal docking position. The grounding pin 121 is in contact with the grounding head 221 to form a grounding docking position. Among them, one of the signal docking position and the grounding docking position is close to the line-end connector 10 and the other is close to the board-end connector 20. Exemplarily, in the present application Figure 4 only shows an embodiment in which the grounding docking position is close to the line-end connector 10 and the signal docking position is close to the board-end connector 20.

[0074] Alternatively, in order to ensure the distance between the signal docking position and the grounding docking position in the docking direction Z, it can also be achieved by adjusting the extension lengths of the grounding pin 121, the mating contact head 111, the grounding head 221, and the head contact 211. For example, the extension length of the grounding pin 121 can be made greater than the extension length of the mating contact head 111. Correspondingly, it is ensured that the extension length of the grounding head 221 docked with the grounding pin 121 is shorter than the extension length of the head contact 211 docked with the mating contact head 111.

[0075] Continuing to refer to Figure 2 , the grounding plate 12 includes a grounding main board 122, and the grounding main board 122 sequentially has a top edge (i.e., Figure 2 the upper edge in Figure 2The lower edge of the ground main board 122 is provided with a bottom edge (the lower edge of the ground main board 122 is the lower edge of the line-end signal terminal pair 11). A plurality of spaced-apart grounding pins 121 are formed on the top edge, and a grounding frame portion 123 is formed on the bottom edge. The line-end signal terminal pair 11 further has a base portion 112 and a wiring contact 113 that are connected to the mating contact 11 and are sequentially formed along the mating direction Z. The grounding frame portion 123 is used to surround the wiring contact 113 to ensure a complete grounding path is formed within the line-end signal terminal pair 11, reducing crosstalk between the wiring contact 113 in this line-end signal terminal pair 11 and the wiring contact 113 in an adjacent line-end signal terminal pair 11.

[0076] In some embodiments of the present application, the ground main board 122 has a shielding inner surface and a shielding outer surface that are parallel to the mating direction Z and are oppositely arranged. The grounding frame portion 123 is located on the shielding inner surface, and the grounding pins 121 are located on the shielding outer surface. The grounding pins 121 extend on a plane that is substantially parallel to the ground main board 122 (the plane where the grounding pins 121 are located is parallel to but does not coincide with the plane where the ground main board 122 is located), and the grounding frame portion 123 extends on a plane that is substantially perpendicular to the ground main board 122. The extending directions of the wiring contact 113 and the grounding frame portion 123 are the same to ensure that the grounding frame portion 123 can completely surround the wiring contact 113, thereby ensuring a better grounding effect of the ground main board 122.

[0077] During specific manufacturing, the above-mentioned grounding pins 121 are bent in the reverse direction of the Y direction and then bent towards the top and continue to extend towards the top, which can ensure that there is an appropriate deformation space for the grounding pins 121 in the vertical direction. Similarly, the above-mentioned grounding frame portion 123 is bent in the Y direction and extends along the Y direction, which can ensure that there is an appropriate deformation space for the grounding frame portion 123 in the Y direction. Furthermore, when the above-mentioned grounding pins 121 are connected to other components, they are not easily deformed, ensuring better structural stability of the grounding plate 12.

[0078] It can be understood that the extending trend of the grounding plate 12 is substantially the same as that of the line-end signal terminal pair 11, thereby ensuring a better shielding effect of the grounding plate 12 on the line-end signal terminal pair 11. The wiring contact 113 of the above-mentioned line-end signal terminal 11 is used to connect the cable 30, and among them, the grounding frame portion 123 can surround the periphery of the connection between the wiring contact 113 and the cable 30.

[0079] Continue to refer to Figure 2, the grounding main board 122 further has a front edge and a rear edge perpendicular to the top edge, and plug-in portions 124 are formed on both the front edge and the rear edge. The plug-in portions 124 extend on a plane substantially perpendicular to the grounding main board 122 and are located outside the shield. The wire-end terminal module 100 further includes an elongated insulating support frame 13 for supporting the wire-end signal terminal pair 11 and the grounding board 12. A positioning portion 131 connected to the plug-in portion 124 is provided on the insulating support frame 13. Thus, through the cooperation of the plug-in portion 124 and the positioning portion 131, the fixed connection between the grounding board 12 and the insulating support frame 13 can be ensured, and the connection is simple and convenient.

[0080] Exemplarily, the above-mentioned plug-in portion 124 is a flap protruding towards the insulating support frame 13, and the positioning portion 131 is a jack provided on the insulating support frame 13. The above-mentioned flap extends into the jack to achieve the assembly connection between the two. At the same time, it can also form a shield on both sides of the wire-end signal terminal pair 11 (i.e., the base 112 of the wire-end signal terminal pair 11) that cooperates with the grounding board 12, so as to form a complete shielding effect on the wire-end signal terminal pair 11 in its signal path.

[0081] Based on the above embodiments, it can be understood that the inner shielding surface of the grounding main board 122 is a side wall close to the insulating support frame 13 (or the wire-end signal terminal pair 11), and the outer shielding surface is a side wall facing away from the insulating support frame 13 (or the wire-end signal terminal pair 11).

[0082] Continue to refer to Figures 1 to 3 , both the wire-end signal terminal pair 11 and the grounding board 12 have a plurality of them, and are arranged at intervals along the length direction of the insulating support frame 13 and are held within the insulating support frame 13. The board-end terminal module 200 further includes an insulating bracket 23 that is substantially elongated. Both the board-end signal terminal pair 21 and the grounding terminal 22 have a plurality of them, and are arranged at intervals along the length direction of the insulating bracket 23 and are held within the insulating bracket 23 to form an integral structure. More specifically, the above-mentioned wire-end signal terminal pair 11 and the insulating support frame 13 are of an integral structure, and the board-end terminal module 200 is of an integral structure, which is beneficial to realizing the modular structure of the structure and facilitating subsequent installation and handling.

[0083] Among them, Figure 2 shows two groups of wire-end terminal modules 100. Each wire-end terminal module 100 includes four independently arranged grounding boards 12. It should be noted that the four independently arranged grounding boards 12 in each of the above-mentioned wire-end terminal modules 100 can also be connected to form an integral structure. Of course, two adjacent grounding boards 12 among the four independently arranged grounding boards 12 can also be made into an integral structure.

[0084] More specifically, each of the above-mentioned wire-end terminal modules 100 can be Figure 2 the integral structure shown, or a split structure. When the wire-end terminal module 100 is a split structure, each group of wire-end terminal modules 100 includes four independently arranged grounding plates 12, and the insulating support frame 13 has two (i.e., Figure 2 the insulating support frame 13 shown is disconnected in the middle), and two grounding plates 12 are respectively fixedly arranged on each insulating support 13. Similarly, the board-end terminal module 200 can be Figure 3 the integral structure shown, or a split structure, and the present application does not make specific limitations thereon.

[0085] Referring to Figure 1 and Figure 5 , the wire-end connector 10 includes an insulating housing 14 and two groups of the wire-end terminal modules 100 installed in the insulating housing 14. The insulating housing 14 is generally in a convex shape and has a receiving hole 141 with an opening facing the board-end connector 20. The receiving hole 141 has a vertical first inner wall 1411 and a second inner wall 1412 that face each other in its length direction. One of the two groups of wire-end terminal modules 100 is arranged on the first inner wall 1411, and the other is arranged on the second inner wall 1412. Thus, it can be ensured that the internal structure of the above-mentioned insulating housing 14 is relatively compact, that is, on the basis of not increasing the length dimension of the insulating housing 14, more wire-end signal terminal pairs 11 and grounding plates 12 can be accommodated in the insulating housing 14.

[0086] Similarly, referring to Figure 1 and Figure 6 , the board-end connector 20 includes an insulating base 24 and two groups of the board-end terminal modules 200 installed in the insulating base 24. The insulating base 24 is generally in a box-like structure and has an opening facing the wire-end connector 10. A convex block structure 241 extending toward the wire-end connector 10 is provided in the box-like structure. The convex block structure 241 has a first installation side wall 2411 and a second installation side wall 2412 that are oppositely arranged. When the wire-end connector 10 and the board-end connector 20 are mated, the first installation side wall 2411 faces the first inner wall 1411, and the second installation side wall 2412 faces the second inner wall 1412. One of the two groups of board-end terminal modules 200 is arranged on the first installation side wall 2411, and the other is arranged on the second installation side wall 2412, so as to realize the docking with the wire-end connector 10.

[0087] Continuing to refer to Figure 1 , Figure 5 and Figure 6, the insulating housing 14 has a first insulating portion 142 and a second insulating portion 143 arranged in sequence along the docking direction Z. The insulating base 24 is sleeved on the outer periphery of the first insulating portion 142. At least part of the outer side wall of the first insulating portion 142 is in an inverted conical shape to form a guiding surface 1421, and a conical surface 242 matching the guiding surface 1421 is formed on the inner wall surface of the insulating base 24. Thus, through the cooperation of the guiding surface 1421 and the conical surface 242, the docking accuracy between the insulating housing 14 in the wire-end connector 10 and the insulating base 24 in the board-end connector 20 can be ensured, and the assembly efficiency and assembly yield rate of the above wire-to-board connector are both relatively high. At the same time, the stability and reliability of the docking between the wire-end connector 10 and the board-end connector 20 can also be ensured.

[0088] Refer to Figure 1 , Figure 3 and Figure 6 , the board-end signal terminal pair 21 has a tail contact 212 extending and bending in the reverse direction of the head contact 211, and the grounding terminal 22 also has a grounding tail 222 extending and bending in the reverse direction of the grounding head 221. At least part of the tail contact 212 and the grounding tail 222 are exposed on the mounting surface of the insulating base 24 facing away from the wire-end connector 10 (i.e., Figure 1 the upper surface of the insulating base 24 in Figure 1 and are used for electrical connection with the circuit board 40. Wherein, the insulating base 24 has a first side wall 243 facing the first mounting side wall 2411 and a second side wall 244 facing the second mounting side wall 2412. The part of the first side wall 243 and / or the second side wall 244 close to the circuit board 40 is an inclined surface 245, and there is an included angle between the inclined surface 245 and the circuit board 40. More specifically, the above inclined surface 245 extends downward toward the outside of the insulating base 24, and the board-end connector 20 is surface-mounted to the circuit board 40. Through the above inclined surface setting, it is convenient to observe the connection quality between the board-end connector 20 and the circuit board 40 from the length direction of the board-end connector 20 ( Figure 1 the X direction in

[0089] More specifically, refer to Figure 3 , the board-end signal terminal pair 21 in the above board-end terminal module 200 further has a body portion 213 connecting the head contact 211 and the tail contact 212, and the grounding terminal 22 in the board-end terminal module 200 further has a base portion 223 connecting the grounding head 221 and the grounding tail 222.

[0090] There are two groups of embodiments of the board terminal module 200, each of which includes an insulating bracket 23, and a plurality of board signal terminal pairs 21 and a plurality of grounding terminals 22 supported and fixed by the insulating bracket 23. The tail contact 212 and the grounding tail 222 in one board terminal module 200 are bent in the Y direction, and the tail contact 212 and the grounding tail 222 in the other board terminal module 200 are bent in the opposite direction of the Y direction, that is, the tail contacts 212 and the grounding tail 222 in the two groups of board terminal modules 200 are bent in directions away from each other and then extend.

[0091] Reference Figure 1 and Figure 7 The board-end connector 20 further includes an L-shaped connecting plate 25. The insulating base 24 is provided with a connecting portion 247. The L-shaped connecting plate 25 has a first plate portion 251 and a second plate portion 252 that are perpendicular to each other. The first plate portion 251 is connected to the connecting portion 247, and the second plate portion 252 is connected to the circuit board 40. Thus, the holding force of the board-end connector 20 and the circuit board 40 after surface mounting can be increased by the L-shaped connecting plate 25.

[0092] For example, since the above-mentioned wire-to-board connector is roughly rectangular in structure, the insulating base 24 is also roughly rectangular in structure. Figure 1 The size in the X direction is larger than that in the width direction (i.e. Figure 1 In order to better ensure the retention force of the board-end connector 20 and the circuit board 40 after surface mounting, the insulating base 24 has two vertical side walls parallel to the width direction, and a connecting portion 247 is provided on each of the two vertical side walls. Correspondingly, the L-shaped connecting plates 25 are also provided with two.

[0093] Reference Figure 2 and Figure 5 In order to control the correct position of the butt contact 111 in the line-end signal terminal pair 11 and the ground pin 121 in the ground plate 12 to prevent them from deflecting. In the present application, the first inner wall 1411 and the second inner wall 1412 are provided with a plurality of positioning slots 1413 extending along the butt direction Z, and the plurality of butt contacts 111 and the plurality of ground pins 121 are respectively arranged in the corresponding positioning slots 1413. Therefore, the positioning slots 1413 can ensure the correct position of the butt contact 111 and the ground pin 121, thereby ensuring reliable butt connection.

[0094] Similarly, refer to Figure 3 and Figure 6, a plurality of terminal through slots 246 extending along the docking direction Z are provided at intervals on the first mounting side wall 2411 and the second mounting side wall 2412, and a plurality of board-end signal terminal pairs 21 (i.e., the head contacts 211 and the body parts 213 of the board-end signal terminal pairs 21) and a plurality of grounding terminals 22 (i.e., the grounding heads 221 and the base parts 223 of the grounding terminals 22) are respectively arranged in the corresponding terminal through slots 246.

[0095] It can be understood that by providing the positioning through slot 1413 in this application, the ortho-position accuracy of the mating contacts 111 in the wire-end signal terminal pair 11 and the grounding pins 121 in the grounding plate 12 can be ensured, and by providing the terminal through slots 246, the ortho-position accuracy of the head contacts 211 and the body parts 213 of the board-end signal terminal pair 21 and the grounding heads 221 and the base parts 223 of the grounding terminal 22 can be ensured, so that the placement positions of the above-mentioned parts are relatively accurate and reliable, thereby ensuring the plugging reliability of the wire-end connector 10 and the board-end connector 20.

[0096] Referring to Figure 2 、 Figure 5 and Figure 8 , the second insulating part 143 of this application has a horizontal plane 1431 facing the first insulating part 142 and a stepped surface 1432 facing away from the first insulating part 142. The distance between the stepped surface 1432 and the horizontal plane 1431 decreases in sequence from the direction of the first inner wall 1411 to the second inner wall 1412, thereby ensuring that the cables 30 are staggered from each other in the docking direction Z and ensuring that the outgoing directions of all the cables 30 are the same, making the outgoing lines of the wire-to-board connector neat and beautiful.

[0097] More specifically, the distance between the stepped surface 1432 and the horizontal plane 1431 decreases in sequence from the direction of the first inner wall 1411 to the second inner wall 1412, and specifically includes a first stepped area, a second stepped area, a third stepped area and a fourth stepped area. For the embodiment in which the wire-end connector 10 includes two sets of wire-end terminal modules 100, the grounding frame parts 13 in the grounding plates 12 in the two sets of wire-end terminal modules 100 are bent and extended towards the side with the thinnest thickness of the second insulating part 143. An avoidance hole is formed in the above-mentioned first stepped area for the grounding frame part 123 of the grounding plate 12 in one of the two sets of wire-end terminal modules 100 and the wiring contact 113 in the wire-end signal terminal pair 11 to be exposed outside the second insulating part 143. Another avoidance hole is formed in the above-mentioned third stepped area for the grounding frame part 123 of the grounding plate 12 in the other of the two sets of wire-end terminal modules 100 and the wiring contact 113 in the wire-end signal terminal pair 11 to be exposed outside the second insulating part 143.

[0098] Exemplarily, in order to achieve the pre-positioning of the above-mentioned wire-end terminal module 100 and the insulating housing 16, the grounding frame portion 123 in the grounding plate 12 of the above-mentioned wire-end terminal module 100 sequentially has a first horizontal section extending in a direction away from the grounding main board 122, a vertical section extending towards the board-end connector 20, and a second horizontal section extending in a direction away from the grounding main board 122 in its extending direction. More specifically, the above-mentioned grounding main board 122, the first horizontal section and the vertical section form a U-shaped card slot. Thus, when assembling the above-mentioned wire-end terminal module 100 to the insulating housing 14, the above-mentioned U-shaped card slot is clamped to the connection of the first step area and the second step area.

[0099] It can be understood that in order to meet the installation requirements, the above two groups of wire-end terminal modules 100 need to be adaptively adjusted according to the dimensions of the step surface 1432 and the horizontal surface 1431 in the docking direction. Exemplarily, the height of one wire-end terminal module 100 (i.e., the wire-end signal terminal pair 11 and the grounding plate 12 in one wire-end terminal module 100) in the above two groups of wire-end terminal modules 100 is lower than the height of the other wire-end terminal module 100 (i.e., the wire-end signal terminal pair 11 and the grounding plate 12 in the other wire-end terminal module 100).

[0100] In addition, in order to facilitate the insertion with the board-end connector 20 and avoid the free end of the grounding pin 121 (i.e., Figure 2 the top end of the grounding pin 121 in

[0101] being crushed when the board-end connector 20 is docked, the free ends of the grounding pins 121 in the two groups of wire-end terminal modules 100 in the present application are in an outward-expanded shape. More specifically, the free ends of the above-mentioned grounding pins 121 extend in directions away from each other.

[0101] Referring to Figure 8 and Figure 9 , the wire-end connector 10 further includes a metal housing 15 arranged on the periphery of the insulating housing 14, and a bottom plate 16 arranged on the side of the step surface 1432 facing away from the horizontal surface 1431. Binding protrusions 151 are provided on the outer sides of the two side walls of the metal housing 15 in the length direction, and the binding protrusions 151 can increase the binding force between the metal housing 15 and the bottom plate 16. During specific manufacturing, after the wire-end connector 10 is assembled, then the insulating housing 14 in the wire-end connector 10 is placed on the metal housing 15, and then the above-mentioned bottom plate 16 is formed by low-pressure injection molding. At this time, the multiple binding protrusions 151 on the outer side of the metal housing 15 can increase the binding force with the metal housing 15 when the bottom plate 16 is formed by low-pressure injection molding, ensuring the stable and reliable connection between the two.

[0102] Among them, there are multiple above-mentioned engaging protrusions 151, and the present application does not specifically limit the protruding size, structure, and quantity of the engaging protrusions 151.

[0103] Exemplarily, the above-mentioned engaging protrusions 151 of the present application are provided in two rows in the docking direction Z, and the two rows of engaging protrusions 115 are respectively arranged along the length direction and are staggeredly arranged. More specifically, any one of the engaging protrusions 151 in one row of the two rows of engaging protrusions is located between two adjacent engaging protrusions 151 in the other row of engaging protrusions.

[0104] Continue to refer to Figure 8 As shown, the above-mentioned metal housing 15 is provided with a mounting stepped hole 152. The large hole of the mounting stepped hole 152 is used to accommodate the second insulating portion 143, and its outer contour matches the outer contour of the second insulating portion 143. The small hole of the mounting stepped hole 152 is used to accommodate the first insulating portion 142, and its outer contour matches the outer contour of the first insulating portion 142, which is convenient for realizing pre-positioning between the two.

[0105] Refer to Figure 1 and Figure 10 As shown, the wire-end connector 10 further includes a fixing frame 17. The fixing frame 17 is arranged around the metal housing 15, and there is a gap S between the fixing frame 17 and the outer peripheral side of the metal housing 15. Thus, each component mounted on the metal housing 15 can be finely adjusted relative to the fixing frame 17 in the X direction and the Y direction together with the metal housing 15. Therefore, the installation precision requirements for the wire-end connector 10 and the board-end connector 20 are reduced, which is beneficial to improving the product yield and connection reliability.

[0106] During specific manufacturing, the above-mentioned gap S can be adaptively adjusted according to the tolerance ability of the wire-to-board connector. In some embodiments, the above-mentioned gap S of the present application is 0.3 mm to 0.7 mm. Preferably, the above-mentioned gap S is 0.5 mm.

[0107] Based on the above embodiments, the wire-to-board connector further includes a limiting structure 18. The limiting structure 18 is used to limit the relative position of the metal housing 15 and the fixing frame 17 in the docking direction Z. Among them, the limiting structure 18 includes a screw 181, a gasket 182, and a threaded hole 183 arranged along the docking direction Z. The threaded hole 183 is arranged on the metal housing 15 or the fixing frame 17. A part of the gasket 182 covers the metal housing 15, and the other part covers the fixing frame 17. Thus, the adjustment distance of the metal housing 15 relative to the fixing frame 17 in the docking direction Z can be controlled by controlling the depth of the screw 181 screwed into the threaded hole 183, that is, the above-mentioned gasket 182 is not completely pressed on the metal housing 15 and the fixing frame 17. It should be noted that the above-mentioned gasket 182 can be a spring washer and / or a flat washer.

[0108] Refer to Figure 8 and Figure 10 On both side walls of the above metal shell 15 that are parallel to the width direction (i.e., the Y direction in Figure 1 ), an arc-shaped groove 153 is provided. Correspondingly, an arc-shaped protrusion 172 corresponding to the arc-shaped groove 153 is provided on the above fixing frame 17, so that the above gasket 182 can cover both the metal shell 15 and the fixing frame 17 at the same time. It can be understood that in order to facilitate the cable 30 to pass through the fixing frame 17, a wire passing port 171 is further provided on one side wall of the above fixing frame 17.

[0109] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0110] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims. In addition, specific examples are used in the specification to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application, and the content of this specification should not be construed as a limitation to this application.

Claims

1. A wire-to-board connector, comprising a wire-end connector (10) and a board-end connector (20) docked on the wire-end connector (10) along the docking direction Z, characterized in that, Further included are: A wire-end terminal module (100) is provided inside the wire-end connector (10), and includes a wire-end signal terminal pair (11) and a grounding plate (12). The wire-end signal terminal pair (11) has a mating contact head (111) extending towards the board-end connector (20), and the grounding plate (12) has a grounding pin (121) extending towards the board-end connector (20). The grounding plate (12) includes a grounding main board (122). The grounding main board (122) has a top edge and a bottom edge in sequence in the docking direction Z. A plurality of spaced-apart grounding pins (121) are formed on the top edge, and a grounding frame portion (123) is formed on the bottom edge. The wire-end signal terminal pair (11) has a base portion (112) and a wiring contact head (113) connected to the mating contact head (111) and formed in sequence along the docking direction Z. The grounding frame portion (123) is used to surround the wiring contact head (113). A board-end terminal module (200) is provided inside the board-end connector (20), and includes a board-end signal terminal pair (21) and a grounding terminal (22). The board-end signal terminal pair (21) has a head contact (211) extending towards the wire-end connector (10), and the grounding terminal (22) has a grounding head (221) extending towards the wire-end connector (10). Wherein, when the wire-end connector (10) and the board-end connector (20) are mated, the mating contact head (111) and the head contact (211) are in contact to form a signal docking position, and the grounding pin (121) and the grounding head (221) are in contact to form a grounding docking position. In the docking direction Z, the signal docking position and the grounding docking position are staggered.

2. The wire-to-board connector according to claim 1, wherein Both the grounding pin (121) and the head contact (211) are in a flat plate shape. A mating contact point protruding towards the head contact (211) is formed on the mating contact head (111), and a grounding contact point protruding towards the grounding pin (121) is formed on the grounding head (221). The mating contact point and the grounding contact point are staggered in the docking direction Z.

3. The wire-to-board connector according to claim 2, characterized in that, The grounding main board (122) has a shielding inner surface and a shielding outer surface parallel to the docking direction Z and oppositely arranged. The grounding pin (121) is located on the shielding outer surface, and the grounding frame portion (123) is located on the shielding inner surface. The grounding pin (121) extends in a plane parallel to the grounding main board (122), and the grounding frame portion (123) extends in a plane perpendicular to the grounding main board (122). The extending directions of the wiring contact head (113) and the grounding frame portion (123) are the same.

4. The wire-to-board connector according to claim 3, characterized in that, The grounding main board (122) further has a front edge and a rear edge perpendicular to the top edge. Plug-in portions (124) are formed on both the front edge and the rear edge. The plug-in portions (124) extend in a plane perpendicular to the grounding main board (122) and are located on the shielding outer surface. The wire-end terminal module (100) further includes a strip-shaped insulating support frame (13) for supporting the wire-end signal terminal pair (11) and the grounding plate (12), and a positioning portion (131) connected to the plugging portion is provided on the insulating support frame (13).

5. The wire-to-board connector according to claim 4, wherein The wire-end signal terminal pair (11) and the grounding plate (12) both have a plurality of them, and are arranged at intervals along the length direction of the insulating support frame (13), and are held within the insulating support frame (13); The board-end terminal module (200) further includes a strip-shaped insulating bracket (23), the board-end signal terminal pair (21) and the grounding terminal (22) both have a plurality of them, and are arranged at intervals along the length direction of the insulating bracket (23), and are held within the insulating bracket (23) to form an integral structure.

6. The wire-to-board connector according to any one of claims 1 to 5, wherein The wire-end connector (10) includes an insulating housing (14) and two sets of the wire-end terminal modules (100) installed within the insulating housing (14). The insulating housing (14) is in a convex shape and has a receiving hole (141) with an opening facing the board-end connector (20). The receiving hole (141) has a vertical first inner wall (1411) and a second inner wall (1412) facing each other in its length direction. One of the two sets of wire-end terminal modules (100) is provided on the first inner wall (1411), and the other is provided on the second inner wall (1412); The board-end connector (20) includes an insulating base (24) and two sets of the board-end terminal modules (200) installed within the insulating base (24). The insulating base (24) is in a box-shaped structure and has an opening facing the wire-end connector (10). A convex block structure (241) extending towards the wire-end connector (10) is provided within the box-shaped structure. The convex block structure (241) has a first mounting side wall (2411) and a second mounting side wall (2412) arranged opposite to each other. When the wire-end connector (10) and the board-end connector (20) are engaged, the first mounting side wall (2411) faces the first inner wall (1411), the second mounting side wall (2412) faces the second inner wall (1412), and one of the two sets of board-end terminal modules (200) is provided on the first mounting side wall (2411), and the other is provided on the second mounting side wall (2412).

7. The wire-to-board connector according to claim 6, wherein The insulating housing (14) has a first insulating portion (142) and a second insulating portion (143) arranged in sequence along the docking direction Z. The insulating base (24) is sleeved on the outer periphery of the first insulating portion (142). At least a part of the outer side wall of the first insulating portion (142) is in an inverted conical shape to form a guiding surface (1421), and a conical surface (242) matching the guiding surface (1421) is formed on the inner wall surface of the insulating base (24).

8. The wire-to-board connector according to claim 6, wherein The board-end signal terminal pair (21) has a tail contact (212) disposed opposite to the head contact (211). The ground terminal (22) also has a ground tail (222) disposed opposite to the ground head (221). The tail contact (212) and the ground tail (222) are at least partially exposed on the mounting surface of the insulating base (24) facing away from the wire-end connector (10) and are used for electrical connection with the circuit board (40); wherein, The insulating base (24) has a first side wall (243) facing the first mounting side wall (2411) and a second side wall (244) facing the second mounting side wall (2412). The part of the first side wall (243) and / or the second side wall (244) close to the circuit board (40) is an inclined surface (245), and there is an included angle between the inclined surface (245) and the circuit board (40).

9. The wire-to-board connector according to claim 8, wherein, The board-end connector (20) further includes an L-shaped connecting plate (25). A connecting portion (247) is provided on the insulating base (24). The L-shaped connecting plate (25) has a first plate portion (251) and a second plate portion (252) perpendicular to each other. The first plate portion (251) is connected to the connecting portion (247), and the second plate portion (252) is connected to the circuit board (40).

10. The wire-to-board connector according to claim 6, wherein, A plurality of positioning through slots (1413) extending along the docking direction Z are provided at intervals on the first inner wall (1411) and the second inner wall (1412). A plurality of the docking contacts (111) and a plurality of the ground pins (121) are respectively disposed in the corresponding positioning through slots (1413); A plurality of terminal through slots (246) extending along the docking direction Z are provided at intervals on the first mounting side wall (2411) and the second mounting side wall (2412). A plurality of the board-end signal terminal pairs (21) and a plurality of the ground terminals (22) are respectively disposed in the corresponding terminal through slots (246).

11. The wire-to-board connector according to claim 7, characterized in that, The second insulating portion (143) has a horizontal surface (1431) facing the first insulating portion (142) and a stepped surface (1432) facing away from the first insulating portion (142). The distance between the stepped surface (1432) and the horizontal surface (1431) decreases successively in the direction from the first inner wall (1411) to the second inner wall (1412).

12. The wire-to-board connector according to claim 11, characterized in that, The wire-end connector (10) further includes a metal shell (15) disposed on the periphery of the insulating housing (14), and a bottom plate (16) disposed on the side of the stepped surface (1432) facing away from the horizontal surface (1431). Bonding protrusions (151) are provided on the outer sides of the two side walls of the metal shell (15) in the length direction, and the bonding protrusions (151) can increase the bonding force between the metal shell (15) and the bottom plate (16).

13. The wire-to-board connector according to claim 12, characterized in that, Further included: A fixing frame (17) is disposed on the periphery of the metal shell (15) and there is a gap S between the fixing frame (17) and the outer peripheral side of the metal shell (15); A limiting structure (18) is used to limit the relative position of the metal housing (15) and the fixing frame (17) in the docking direction Z. The limiting structure (18) includes a screw (181), a gasket (182), and a threaded hole (183) arranged along the docking direction Z. The threaded hole (183) is provided on the metal housing (15) or the fixing frame (17). A part of the gasket (182) covers the metal housing (15), and another part covers the fixing frame (17).

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