Connectors for PCB

Abstract

A connector for a substrate, comprising: a frame housing; a terminal assembly fixed to the frame housing, the terminal assembly comprising an insulating body and a plurality of pairs of differential signal terminals fixed to the insulating body, each of the differential signal terminals comprising a terminal fixing portion fixed in the insulating body, a terminal wiring portion integrally connected to the terminal fixing portion, and a terminal docking portion extending out of the insulating body and correspondingly in electrical contact with a circuit board; a cable correspondingly electrically connected to the terminal wiring portion; at least one grounding member is provided between at least two adjacent pairs of differential signal terminals, the grounding member comprising a main body and a contact portion connected to the main body, the main body being located between two adjacent terminal fixing portions, and the contact portion correspondingly in electrical contact with the circuit board. It has good shielding performance, is easy to assemble, and has low cost.

Description

Technical Field

[0001] The present application relates to the field of communication transmission, and in particular to a connector for a substrate. Background Art

[0002] For related prior art, please refer to Chinese utility model patent CN208478652U, which discloses a connector module, which includes a conductive shell provided with a main body and a terminal assembly fixed to the main body, the terminal assembly includes an insulating body and a plurality of groups of signal terminals fixed in the insulating body, each of the signal terminals includes a terminal fixing portion fixed in the insulating body, a terminal wiring portion extended from one end of the terminal fixing portion, and a terminal docking portion extended from the other end of the terminal fixing portion, the connector module also includes a plurality of groups of cables, each group of the cables includes a signal line and a grounding structure, the end of the signal line of each group of cables is connected and fixed to the terminal wiring portion of the signal terminal, and the grounding structure of each group of cables is connected and fixed to the conductive shell.

[0003] In the above-mentioned prior art, the grounding shielding effect between the signal terminal pairs is achieved through a conductive shell, and multiple embodiments are cited, such as the conductive shell is made of a conductive material, or the conductive shell is made of an insulating material and the surface is at least partially electroplated to form a conductive layer. The essence of them is to achieve grounding shielding through a conductive shell, which puts forward high requirements on the manufacturing process of the conductive shell and the product cost is high. Therefore, it is believed that it is necessary to design a new connector structure. Summary of the invention

[0004] The object of the present application is to provide a substrate connector having good shielding performance.

[0005] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A connector for a substrate, comprising:

[0007] The frame housing is provided with an assembly hole formed through the thickness direction of the circuit board, and the assembly hole extends into a long strip shape along the length direction of the frame housing;

[0008] The terminal assembly is fixedly arranged in the assembly hole of the frame housing, the terminal assembly includes an insulating body and a plurality of pairs of differential signal terminals fixed to the insulating body, each of the differential signal terminals includes a terminal fixing portion fixed in the insulating body, a terminal wiring portion integrally connected to the terminal fixing portion, and a terminal docking portion extending out of the insulating body and correspondingly in electrical contact with the circuit board;

[0009] A cable, electrically connected to the terminal wiring portion;

[0010] At least one grounding member is provided between at least two pairs of adjacent differential signal terminals, the grounding member comprises a main body and a contact portion connected to the main body, the main body is located between two adjacent terminal fixing portions, and the contact portion is in electrical contact with the circuit board;

[0011] The two side edges of the main body of the grounding member are respectively fixed to the two hole walls of the assembly hole, so as to divide the assembly holes into a plurality of holes arranged in a row.

[0012] Furthermore, the contact portion is located between two adjacent terminal mating portions, and the contact portion and the adjacent terminal mating portions have the same extension trend.

[0013] Furthermore, a plurality of pairs of the differential signal terminals are arranged in two rows, wherein at least one independent grounding member is provided between any two adjacent pairs of differential signal terminals in any row.

[0014] Furthermore, the grounding member is formed by blanking a metal sheet, and the main body and the contact portion are both located on the plane of the metal sheet.

[0015] Furthermore, the terminal assembly is inserted and fixed into the assembly hole through one end opening of the assembly hole, the terminal docking portion is exposed through one end opening of the assembly hole, and the terminal wiring portion is exposed through the other end opening of the assembly hole.

[0016] Furthermore, a fixing groove is formed on at least one inner wall of the assembling hole, and the grounding piece is extended to form a fixing wing portion inserted and fixed in the fixing groove.

[0017] Furthermore, the surface where the frame shell and the circuit board are bonded is recessed to form an assembly groove, and the terminal assembly electrically connected to the cable is correspondingly inserted and fixed into the assembly groove, and the terminal docking portion is exposed from the surface where the frame shell and the circuit board are bonded, and the terminal wiring portion is clamped between the frame shell and the insulating body along the thickness direction of the circuit board and is not exposed from the frame shell.

[0018] Furthermore, the frame shell is made of metal material, and the substrate connector also includes a cover body, which includes an insulating inner mold and a metal outer shell. The insulating inner mold at least covers the part that is electrically connected to the cable and the terminal connection part, and the metal outer shell is covered on the periphery of the inner mold.

[0019] Furthermore, one side edge of the metal shell extends along the thickness direction of the circuit board to form a grille portion, and a matching recess is correspondingly formed on the outer side of the frame shell. The free end of the grille portion is correspondingly inserted into the matching recess, and the cable passes through the spacing space formed in the middle of the grille portion. The metal shell and the frame shell jointly achieve shielding of all surfaces of the substrate connector except the surface that is in contact with the circuit board.

[0020] Compared with the prior art, the substrate connector disclosed in the present application has good shielding performance, is easy to assemble and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the connector for the substrate of the present application.

[0022] Figure 2 yes Figure 1 A three-dimensional diagram from another angle.

[0023] Figure 3 It is a partial three-dimensional exploded view of the connector for the substrate of the present application, specifically showing a three-dimensional schematic diagram after the insulating inner module and the metal shell are separated from the frame shell.

[0024] Figure 4 It is a partial three-dimensional exploded view of the connector for the substrate of the present application, specifically showing a three-dimensional schematic diagram of a metal shell combined with an insulating inner module and a cable after being separated from a frame shell.

[0025] Figure 5 The partial exploded view of the substrate connector of the present application specifically shows the metal shell with the insulating inner mold, the cable, and the terminal assembly after being separated from the frame housing. Figure 5 A three-dimensional schematic diagram of the grounding member and the frame shell being combined is shown in FIG.

[0026] Figure 6 A partial exploded perspective view of the substrate connector of the present application specifically shows a perspective schematic view of a metal shell combined with an insulating inner mold, a cable, and one of the terminal assemblies combined with multiple grounding members after being separated from the frame housing. Figure 6 and Figure 5 Different perspective.

[0027] Figure 7 yes Figure 1 A bottom view of the substrate connector shown in FIG.

[0028] Figure 8 It is Figure 7 The cross-sectional view along line AA specifically shows a cross-sectional view after the metal shell combined with the insulating inner module is separated from the frame shell.

[0029] Fig. 9 It is Figure 7 The cross-sectional view along line AA also shows a cross-sectional view of a metal housing combined with an insulating inner mold, a cable, and one of the terminal assemblies combined with multiple grounding members after being separated from the frame housing. Fig. 9 In order to display the structure more clearly, the viewing direction of the section view has been adjusted. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0031] It is also necessary to explain here that in order to avoid obscuring the present application due to unnecessary details, only structures and / or processing steps closely related to some embodiments of the present application are shown in the accompanying drawings, while other details that are not very related to some embodiments of the present application are omitted.

[0032] In addition, it should be noted that the terms "comprises," "includes," "has," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article, or apparatus.

[0033] Please refer to Figures 1 to 9 As shown, a substrate connector disclosed in the present application includes a frame housing 1, a terminal assembly 2 fixed on the frame housing 1, a cable 3 electrically connected to the terminal assembly 2, a cover 5 covering the frame housing 1, and a plurality of grounding members 4. The substrate connector is often used to be combined with and electrically connected to a circuit board (not shown).

[0034] The frame housing 1 is generally in the shape of a flat rectangular parallelepiped, and the frame housing 1 is penetrated along the thickness direction of the circuit board to form an assembly hole 11. In the embodiment of the present application, two assembly holes 11 are formed on the frame housing 1, and each assembly hole 11 extends into a long strip shape along the length direction of the frame housing 1, and the two assembly holes 11 are arranged along the width direction of the frame housing 1. The inner wall of each assembly hole 11 is recessed inwardly along the width direction of the frame housing 1 to form a plurality of fixing grooves 111, and the fixing grooves 111 are used to insert and accommodate the grounding member 4.

[0035] In the present application, the frame shell 1 is made of metal material, and can be formed by cutting and milling a metal sheet; it can also be formed by die-casting a metal; it can also be made by forming a coating with conductive shielding properties on the surface of an insulating material after injection molding.

[0036] Please refer to Figures 2 to 9As shown, the terminal assembly 2 includes an insulating body 21 and a plurality of pairs of differential signal terminals 22 fixed in the insulating body 21. Each of the differential signal terminals 22 includes a terminal fixing portion 221 fixed in the insulating body 21, a terminal wiring portion 222 integrally connected to the terminal fixing portion 221, and a terminal docking portion 223 extending out of the insulating body 21 and corresponding to the electrical contact with the circuit board. The terminal assembly 2 corresponds to the assembly hole 11 and is inserted and fixed into the assembly hole 11 from one end opening of the assembly hole 11 by assembly (in the embodiment of the present application, specifically inserted from the end adjacent to the circuit board). The terminal docking portion 223 is exposed from one end opening of the assembly hole 11, and the terminal wiring portion 222 is exposed from the other end opening of the assembly hole 11.

[0037] Please refer to Figure 3 , Figure 4 As shown, the cables 3 are provided with a plurality of cables, each pair of differential signal terminals 22 is connected to an independent cable 3, and each cable 3 includes two signal wires (unnumbered) and one ground wire (unnumbered), wherein the two signal wires are electrically contacted with the terminal connection parts 222 of a pair of differential signal terminals 22, and the one ground wire is electrically contacted with the frame housing 1.

[0038] Please refer to Figure 2 , Figures 4 to 9 As shown, the grounding member 4 is formed by blanking a metal sheet, and the grounding member 4 includes a main body 41 and a contact portion 42 integrally connected to the main body 41, and the main body 41 and the contact portion 42 are both located on the plane of the metal sheet. The two sides of the main body 41 are respectively formed with fixed wings 43 corresponding to the fixed groove 111, and the grounding member 4 is inserted into the assembly hole 11 from one end opening of the assembly hole 11 by assembly (in the embodiment of the present application, specifically inserted from the end adjacent to the circuit board), and the fixed wings 43 are correspondingly inserted into the fixed groove 111 to achieve fixation with the frame housing 1, and the grounding member 4 divides the assembly hole 11 into multiple parts.

[0039] Please refer to Figure 5 Combined with Figure 6 and Fig. 9As shown, the insulating body 21 is formed with a mounting groove 210 between two adjacent pairs of differential signal terminals 22, and the main body 41 of the grounding member 4 is correspondingly inserted and accommodated in the mounting groove 210, the main body 41 is located between two adjacent terminal fixing portions 221, and the contact portion 42 is located between two adjacent terminal docking portions 223, and the contact portion 42 has the same extension trend as the adjacent terminal docking portions 223, and the contact portion 42 is correspondingly in electrical contact with the circuit board. By setting a plurality of grounding members 4, a shielding effect is formed between any two adjacent pairs of differential signal terminals 22 in the same row, and the grounding member 4 is fixed and electrically connected to the frame housing 1 to achieve better high-frequency characteristics of the substrate connector, and the blanking grounding member 4 can achieve a thinner structural design, which is conducive to the overall miniaturization design of the substrate connector, and the overall structure is relatively simple, easy to assemble, and has a better grounding shielding effect. In the present application, at least one independent grounding member 4 is provided between any two adjacent pairs of differential signal terminals 22 in any row of differential signal terminals 22.

[0040] In the present application, the terminal docking portion 223 and the contact portion 42 are both inclined cantilever structures that can undergo elastic deformation. The terminal docking portion 223 and the contact portion 42 are electrically connected to the circuit board by elastic crimping.

[0041] Furthermore, the cover body 5 includes an insulating inner mold 51 and a metal shell 52. The insulating inner mold 51 at least covers the portion where the cable 3 is electrically connected to the terminal connection portion 222, and plays a role of insulation protection. The metal shell 52 is arranged on the periphery of the inner mold 51. One side edge of the metal shell 52 extends along the thickness direction of the circuit board to form a grid portion 521. The outer side surface of the frame shell 1 forms a matching recess 112. The free end of the grid portion 521 is correspondingly matched and inserted into the matching recess 112. The cable 3 passes through the spacing space 520 formed in the middle of the grid portion 521. The metal shell 52 and the frame shell 1 together realize that all surfaces of the substrate connector except the surface that is attached to the circuit board are shielded.

[0042] This application Figures 1 to 9 The assembly method of the substrate connector shown is: first assemble and combine several grounding members 4 with the terminal assembly 2 to form a complete assembly and then insert it into the frame housing 1; of course, it can also be: first insert several grounding members 4 into the frame housing 1, and then assemble and insert the terminal assembly 2 into the frame housing 1.

[0043] It should be noted that, in other embodiments, the assembly hole 11 may also be designed not to penetrate the frame housing 1, that is, an assembly groove (not shown, but can be understood as a groove structure) is formed in the surface where the frame housing 1 and the circuit board are attached, and the terminal assembly 2 electrically connected to the cable 3 is correspondingly inserted and fixed into the assembly groove (specifically inserted from the side adjacent to the circuit board), and the terminal docking portion 223 is exposed on the surface where the frame housing 1 and the circuit board are attached, and the terminal wiring portion 222 is clamped between the frame housing 1 and the insulating body 21 along the thickness direction of the circuit board and is not exposed to the frame housing 1. In this embodiment, the cover 5 may not be provided, and the same implementation is possible.

[0044] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A connector for a substrate, comprising: The frame housing is provided with two assembly holes formed through the thickness direction of the circuit board; The two assembly holes extend in a long strip shape along the length direction of the frame shell and are arranged in a row along the width direction of the frame shell, and the two assembly holes are separated by the frame shell; A plurality of fixing grooves are formed on the inner wall of each assembly hole at both ends along the width direction of the frame shell; Two terminal assemblies are respectively fixed in the assembly holes of the frame housing, each of the terminal assemblies comprises an insulating body and a plurality of pairs of differential signal terminals fixed to the insulating body, each of the differential signal terminals comprises a terminal fixing portion fixed in the insulating body, a terminal wiring portion integrally connected to the terminal fixing portion, and a terminal docking portion extending out of the insulating body and correspondingly in electrical contact with the circuit board; A cable, electrically connected to the terminal wiring portion; The invention is characterized in that: at least one grounding member is provided between two adjacent pairs of differential signal terminals in the same terminal assembly, the grounding member comprises a main body and a contact portion connected to the main body, the main body is located between two adjacent terminal fixing portions, the contact portion is located between two adjacent terminal mating portions, the contact portion has the same extension trend as the adjacent terminal mating portions and is in electrical contact with the circuit board; The insulating body is formed with a mounting groove between two adjacent pairs of differential signal terminals, and the main body of the grounding member is correspondingly inserted and accommodated in the mounting groove; The main body of each grounding member is formed with fixed wings at both ends along the width direction of the frame shell, and the fixed wings are inserted into the corresponding fixing grooves to achieve fixation and electrical connection with the frame shell. The grounding member divides each assembly hole into a plurality of holes arranged in a row.

2. The substrate connector according to claim 1, wherein: The grounding piece is formed by blanking a metal sheet, and the main body and the contact portion are both located on the plane of the metal sheet.

3. The substrate connector according to claim 1, wherein: The terminal assembly is inserted and fixed into the assembly hole through one end opening of the assembly hole, the terminal docking portion is exposed through one end opening of the assembly hole, and the terminal wiring portion is exposed through the other end opening of the assembly hole.

4. The substrate connector according to any one of claims 1 to 3, characterized in that: The frame shell is made of metal material, and the substrate connector also includes a cover body, which includes an insulating inner mold and a metal outer shell. The insulating inner mold at least covers the part where the cable is electrically connected to the terminal connection part, and the metal outer shell is covered on the periphery of the inner mold.

5. The substrate connector according to claim 4, wherein: One side edge of the metal shell extends along the thickness direction of the circuit board to form a grille portion, and a matching recess is correspondingly formed on the outer side of the frame shell. The free end of the grille portion is correspondingly inserted into the matching recess, and the cable passes through the spacing space formed in the middle of the grille portion. The metal shell and the frame shell together shield all surfaces of the substrate connector except the surface that is in contact with the circuit board.

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