Plug-in module and electric connector

Abstract

The utility model discloses a plug-in module and an electric connector, and the plug-in module comprises a plastic housing, a plurality of grounding terminals disposed in the plastic housing, signal terminals disposed between every two adjacent grounding terminals, and a shielding sheet disposed on one side surface of the plastic housing. One end of each grounding terminal and one end of each signal terminal extend out of the plastic shell to form a matching end, the other end of each grounding terminal and the other end of each signal terminal extend out of the plastic shell to form an installation end, and first grooves which are recessed towards the direction of the plastic shell are formed in the positions, corresponding to the grounding terminals, of the shielding piece. The first grooves are distributed on the shielding sheet along the length direction of the grounding terminal. The electric connector comprises an electric insulation shell and a plugging module arranged in the electric insulation shell.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a plug-in module and an electrical connector. Background Technology

[0002] With the development of 5G and 6G technologies, people's demands for the transmission rate of modern data communication transmission systems are increasing. As the core bridge of data communication, the SI performance of high-speed backplane connectors directly affects the transmission rate of modern data communication transmission systems. High-speed backplane connectors typically include a housing and several plug-in modules installed within the housing. Each plug-in module includes a plastic shell and multiple ground terminals and multiple signal terminals disposed within the shell. Each pair of adjacent signal terminals forms a differential signal pair, and each differential signal pair is distributed between corresponding adjacent two ground terminals.

[0003] Placing shielding plates between the plug-in modules of a high-speed backplane connector can effectively reduce crosstalk within the connector's internal circuitry. These shielding plates reduce electromagnetic coupling between signals, thereby significantly improving its signal integration (SI) performance to meet the demands of higher transmission rates. These shielding plates are typically positioned one-to-one on the same side of each plug-in module, for example, on the left or right side of each module, to shield against signal crosstalk from adjacent plug-in modules. Therefore, the structure and design of the shielding plates are crucial.

[0004] In related technologies, to improve shielding performance, when setting the shielding sheet, it is connected to the corresponding side of the plastic shell of the plug-in module, and the shielding sheet is in contact with the grounding terminal in the plastic shell of the corresponding plug-in module, thereby achieving grounding shielding function; when setting the shielding sheet, several spaced, discontinuous grooves are provided on the shielding sheet corresponding to the position of each grounding terminal. The design of the discontinuous grooves can improve shielding performance and prevent crosstalk to a certain extent, but the effect is not ideal and the structure is relatively complex. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a simple plug-in module and electrical connector with improved shielding performance.

[0006] To solve the above-mentioned technical problems, the present invention provides a plug-in module, including a plastic shell, a plurality of grounding terminals disposed in the plastic shell, a signal terminal disposed between each adjacent grounding terminal, and a shielding sheet disposed on one side of the plastic shell. One end of the grounding terminal and the signal terminal extends out of the plastic shell to form a mating end, and the other end extends out of the plastic shell to form a mounting end. A first groove is provided on the shielding sheet at the position corresponding to each grounding terminal, and the first groove is distributed on the shielding sheet along the length direction of the grounding terminal.

[0007] Furthermore, the length and distribution direction of the first groove are adapted to the length and distribution direction of a section of the grounding terminal embedded in the plastic shell.

[0008] Furthermore, the mating ends of the grounding terminal and the signal terminal both extend out of the plastic shell along a first direction, and the mounting ends of the grounding terminal and the signal terminal both extend out of the plastic shell along a second direction perpendicular to the first direction. A section of the grounding terminal and the signal terminal embedded in the plastic shell is configured as a curved section, with its two ends pointing towards the first direction and the second direction respectively. The first groove is curved to match the curved section of the grounding terminal; or...

[0009] The mating ends of the grounding terminal and the signal terminal both extend out of the plastic shell in the first direction, and the mounting ends of the grounding terminal and the signal terminal both extend out of the plastic shell in the opposite direction to the first direction. A section of the grounding terminal and the signal terminal embedded in the plastic shell is configured as a straight segment. The first groove is a straight segment that matches the straight segment of the grounding terminal.

[0010] Furthermore, the width of the first groove near the mounting end is smaller than the width of the other first grooves.

[0011] Furthermore, the width of the first groove near the mounting end is configured to be 0.1 to 3 mm.

[0012] Furthermore, the depth of the first groove is configured to be 0.05 to 1 mm.

[0013] Furthermore, the first groove is formed by stamping the shielding sheet from the side facing the plastic shell towards the plastic shell, and the shielding sheet has a protrusion on the side facing the plastic shell that matches the shape of the first groove.

[0014] Furthermore, the convex bulge has a convex surface that contacts one side surface of the plastic shell.

[0015] Furthermore, a second groove adapted to the convex bulge is formed on one side of the plastic shell facing the shielding sheet. The second groove is used to accommodate the convex bulge and fit tightly with it.

[0016] Furthermore, the electrically insulating housing has a mating contact surface that abuts against the complementary electrical connector when mated with it, and a mounting contact surface that abuts against it when mounted on the substrate; and

[0017] The plurality of plug-in modules are supported by an electrically insulating shell, wherein the mating end of the plug-in module extends out of the plug-in contact surface of the electrically insulating shell, and the mounting end extends out of the mounting contact surface of the electrically insulating shell.

[0018] The plug-in module and electrical connector of this utility model, using the structure shown in the above embodiments, can achieve at least the following functions and effects: The traditional break-type groove is designed as an integral groove that matches the length of a section of the grounding terminal embedded in the plastic shell, reducing structural complexity and manufacturing difficulty, while also improving shielding and crosstalk prevention capabilities; the integral groove is formed by stamping, creating a convex shape on the side of the shielding sheet facing the plastic shell, and the width of the groove determines the width of the contact surface between the convex shape and the plastic shell; except for one narrower first groove near the mounting end, the remaining first grooves are all wider, which not only increases the resistance and stability with the elastic contact, but also allows for optimization of high-speed signal transmission by setting different groove widths according to design requirements. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a structural schematic diagram of one embodiment of the plug-in module of this utility model.

[0021] Figure 2 yes Figure 1 A diagram showing the disassembly of the shielding plate and the plastic shell.

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure when the middle plug-in module is connected to the right-angle fastener.

[0023] Figure 4 yes Figure 1 A schematic diagram of the structure of the shielding sheet.

[0024] Figure 5 yes Figure 2 A magnified view of part A in the middle.

[0025] Figure 6 This is a structural schematic diagram of one embodiment of the electrical connector of this utility model, with some plug-in modules hidden in the diagram.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] Plug-in module 100; mating end 100a; mounting end 100b; plastic shell 110; first side edge 111; second side edge 112; fixing groove 112a; second fixing rib 112b; third side edge 113; fourth side edge 114; guide block 114a; first fixing rib 114b; second groove 115; first rivet 116; second rivet 117; connecting terminal 120; grounding terminal 12a; signal terminal 12b; shielding sheet 130; first groove 131; protrusion 132; elongated rivet hole 133; circular rivet hole 134; right-angled fastener 140; first fixing slot 141; second fixing slot 142; elastic contact 150; first window 151; second window 152; elastic contact part 153;

[0028] Electrically insulating housing 200; insertion cavity 210; guide slot 220. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0032] Please see Figure 1 , Figure 1 This is a structural schematic diagram of one embodiment of the plug-in module of this utility model. In this article, combined with... Figure 1The structure shown is an exemplary description of the plug-in module and electrical connector of this utility model, so as to more clearly illustrate the various components and mating relationships of the plug-in module and electrical connector. It should be understood that, although the following will... Figure 1 The plug-in module and electrical connector shown are described in detail as examples, but are not intended to limit the scope of the plug-in module and electrical connector of this utility model. Apart from the components that solve the necessary technical problems of this utility model, the other components can be regarded as non-essential technical elements. These non-essential technical elements can be replaced by other technical elements with the same or similar functions or structures in other embodiments, or these non-essential technical elements may not be needed in other embodiments.

[0033] Please see Figure 1 and Figure 2 The plug-in module 100 shown includes a plastic housing 110, a plurality of grounding terminals 12a disposed in the plastic housing 110, signal terminals 12b disposed between each pair of adjacent grounding terminals 12a, and a shielding sheet 130 disposed on one side of the plastic housing 110. One end of each grounding terminal 12a and signal terminal 12b (hereinafter collectively referred to as connection terminals 120) extends out of the plastic housing 110 to form a mating end 100a, and the other end extends out of the plastic housing 110 to form a mounting end 100b. Two adjacent signal terminals 12b form a set of differential signal pairs, and a set of differential signal pairs is distributed between each pair of adjacent grounding terminals 12a. The shielding sheet 130 is provided with a first groove 131 recessed towards the plastic housing 110 at a position corresponding to each grounding terminal 12a, and the first groove 131 is distributed on the shielding sheet 130 along the length direction of the grounding terminal 12a.

[0034] In the illustrated embodiment, the plastic shell 110 has a rectangular sheet structure, having opposing first side edges 111 and second side edges 112, a third side edge 113 located between the first side edges 111 and second side edges 112, and an opposing fourth side edge 114. The extending directions of the first side edges 111 and second side edges 112 are perpendicular to the extending directions of the third side edges 113 and fourth side edges 114. If the first side edges 111 and second side edges 112 are both distributed along the width direction of the plastic shell 110, the third side edges 113 and fourth side edges 114 are both distributed along the length direction of the plastic shell 110. When the plug-in module 100 is applied to a vertical electrical connector (the mating end 100a and mounting end 100b of the connecting terminal 120 are oriented perpendicularly to each other), the mating end 100a of the connecting terminal 120 protrudes through the first side edge 111 (or the second side edge 112) of the plastic shell 110, and the mounting end 100b of the connecting terminal 120 protrudes through the third side edge 113 (or the fourth side edge 114) of the plastic shell 110. When the plug-in module 100 is applied to a linear electrical connector (the mating end 100a and the mounting end 100b are on the same straight line and oriented in opposite directions), the mating end 100a and the mounting end 100b of the connecting terminal 120 protrude through opposite sides of the plastic shell 110 (such as the first side edge 111 and the second side edge 112).

[0035] This embodiment is illustrated using a mating module 100 applied to a vertical electrical connector as an example. In this embodiment, if the extension directions of the first side edge 111 and the second side edge 112 are defined as the X-axis direction, and the directions of the third side edge 113 and the fourth side edge 114 are defined as the Y-axis direction (mating direction), then a plurality of connecting terminals 120 can be evenly spaced along the X-axis direction. Specifically, the mating ends 100a of the plurality of connecting terminals 120 extend from the first side edge 111 of the plastic shell 110 along a first direction (Y-axis direction), and the mating ends 100a of the plurality of connecting terminals 120 are spaced along the X-axis direction; the mounting ends 100b of the plurality of connecting terminals 120 extend from the third side edge 113 of the plastic shell 110 along a second direction (X-axis direction) perpendicular to the first direction, and the mounting ends 100b of the plurality of connecting terminals 120 are evenly spaced along the Y-axis direction. Each of the connecting terminals 120 embedded in the plastic housing 110 is configured as a curved segment (not shown in the figure), with its two ends facing the Y-axis and X-axis directions, respectively. It should be understood that the segment of the connecting terminal 120 embedded in the plastic housing 110 is not limited to the aforementioned curved shape. For example, when the plug-in module 100 is used in a linear electrical connector, the connecting terminal 120 is generally linear, and its segment embedded in the plastic housing 110 is also a linear segment.

[0036] Please see Figure 6 When the plug-in module 100 is inserted into the electrical insulating housing 200 of the vertical electrical connector, the mating end 100a (first side edge 111) of the plug-in module 100 is inserted into the plug-in cavity 210 of the electrical insulating housing 200 configured for the plug-in module 100, the second side edge 112 is exposed outside the electrical insulating housing 200, the mounting end 100b (third side edge 113) of the plug-in module 100 is exposed outside the plug-in cavity 210 of the electrical insulating housing 200, and the fourth side edge 114 is partially located in the guide slot 220 configured for it in the electrical insulating housing 200. The guide slot 220 is located at one end of the plug-in cavity 210 and communicates with it. The length of the guide slot 220 along the Y-axis direction (plug-in direction) is greater than the length of the plug-in cavity 210 along the Y-axis direction, so as to firmly support the plug-in module 100 and lengthen the guide path.

[0037] Please see Figure 3 The fourth side edge 114 of the plastic shell 110 is provided with a guide block 114a that guides and engages with the guide slot 220 of the electrical insulation shell 200. A first fixing rib 114b is provided on the fourth side edge 114 near the second side edge 112 (the section of the fourth side edge 114 away from the mating end 100a). The first fixing rib 114b protrudes from the fourth side edge 114 in a direction away from the third side edge 113. A fixing groove 112a is provided on the second side edge 112 of the plastic shell 110 (the side edge away from the mating end 100a). A second fixing rib 112b is provided on the second side edge 112 of the plastic shell 110 near the fourth side edge 114. The second fixing rib 112b, the fixing groove 112a, and the first fixing rib 114b together form a fixing assembly that is fixedly engaged with the right-angled fixing member 140 of the vertical electrical connector. The right-angled fastener 140 is used to fix a plurality of parallel and spaced-apart plastic shells 110 together. Each right-angled fastener 140 has a first fixing slit 141 at the position of a first fixing rib 114b corresponding to each plastic shell 110, and the first fixing rib 114b is accommodated within the first fixing slit 141. Each right-angled fastener 140 has a second fixing slit 142 at the position of a second fixing rib 112b corresponding to each plastic shell 110, and the second fixing rib 112b is accommodated within the second fixing slit 142. The edge of the right-angled fastener 140 is accommodated at the position of the fixing groove 112a.

[0038] The shape of the shielding sheet 130 is adapted to the total distribution area of ​​all grounding terminals 12a. For example, the shielding sheet 130 can be configured as a rectangular sheet structure or a near-rectangular sheet structure adapted to the plastic shell 110. A first groove 131 is provided on the shielding sheet 130 corresponding to each grounding terminal 12a. The length and distribution direction of the first groove 131 are adapted to the length and distribution direction of a section of the grounding terminal 12a embedded in the plastic shell 110. The width of the first groove 131 can be configured to be 0.1–3 mm, and the depth can be configured to be 0.05–1 mm.

[0039] In all the first grooves 131, the width of one first groove 131 (also referred to as the first groove 131 in the direction of the mounting end 100b) located near the angle between the mounting end 100b and the mating end 100a (i.e., the angle between the first side edge 111 and the third side edge 113) is smaller than the width of the other first grooves 131, and the width of the other first grooves 131 may be the same.

[0040] Please see Figure 4 In all the first grooves 131, each first groove 131 can be configured to be formed by stamping the shielding sheet 130 in the direction facing the plastic shell 110 from one side away from the plastic shell 110. The shielding sheet 130 has a protrusion 132 on the side facing the plastic shell 110 that matches the shape of the first groove. The protrusion 132 has a convex surface that contacts the side of the plastic shell 110. Compared with the traditional near-line contact method, the surface contact can increase the contact area between the shielding sheet 130 and the plastic shell 110, making the combination of the shielding sheet 130 and the plastic shell 110 more firm and stable.

[0041] Please continue reading Figure 2 In order to increase the bonding force between the plastic shell 110 and the protrusion 132, a second groove 115 adapted to the protrusion 132 is formed on one side of the plastic shell 110 facing the shielding sheet 130. The second groove 115 is used to accommodate the protrusion 132 and fit tightly with it.

[0042] To further strengthen the bonding force between the shielding sheet 130 and the plastic shell 110, a plurality of first rivets 116 and second rivets 117 are provided on the plastic shell 110. The cross-section of the first rivets 116 is elongated, such as elliptical, and the second rivets 117 are cylindrical. The first rivets 116 are positioned at the second grooves 115 of the plastic shell 110, and the length of the first rivet 116 is greater than the width of any of the first grooves 131, with its length direction aligned with the width direction of the first grooves 131 and the second grooves 115.

[0043] The first rivet 116 and the second rivet 117 are both integrally formed on the plastic shell 110 at one end facing the shielding sheet 130, protruding from the plastic shell 110 toward the shielding sheet 130, and their protruding length from the plastic shell 110 is greater than the thickness of the shielding sheet 130. An elongated rivet hole 133 is provided on the shielding sheet 130 at the position corresponding to each first rivet 116, allowing the first rivet 116 to pass through. A circular rivet hole 134 is provided on the shielding sheet 130 at the position corresponding to each second rivet 117, allowing the second rivet 117 to pass through. When assembling the shielding sheet 130 and the plastic shell 110, firstly, the first rivet 116 and the second rivet 117 are aligned with the corresponding rivet holes, so that the protrusion 132 of the shielding sheet 130 is inserted into the second groove 115. The first rivet 116 and the second rivet 117 are riveted to the corresponding rivet holes. For example, a hot pressing process is used to hot press one end of the first rivet 116 and the second rivet 117 that protrudes from the shielding sheet 130 (the end away from the plastic shell 110), so that the outer circumferential dimension of this end is larger than the size of the corresponding rivet hole, to prevent the first rivet 116 and the second rivet 117 from coming off the corresponding rivet hole.

[0044] Please see Figure 5To enhance the contact performance between the grounding terminal 12a and the shielding sheet 130 and ensure the contact stability between the shielding sheet 130 and the grounding terminal 12a, an elastic abutment unit is provided between the shielding sheet 130 and each grounding terminal 12a to allow the grounding terminal 12a to elastically abut against the shielding sheet 130. The elastic abutment unit can be defined as a plurality of elastic contact elements 150 spaced apart on the grounding terminal 12a. A first window 151 is provided on the side of the plastic shell 110 facing the shielding sheet 130 at the position opposite each elastic contact element 150. That is, a plurality of first windows 151 are provided on each first groove 131 along its length direction. The plurality of first windows 151 of each first groove 131 are correspondingly provided with a plurality of elastic contact elements 150 on the corresponding grounding terminal 12a. The elastic contact element 150 passes through the first window 151 and elastically abuts against the shielding sheet 130. Specifically, the elastic contact 150 can be integrally formed on the grounding terminal 12a at the position opposite to the first window 151. For example, in the embodiment shown in the figures, a second window 152 is provided on each grounding terminal 12a at the position opposite to the first window 151. The elastic contact 150 is connected to one side of the second window 152, and the elastic contact 150 has an elastic contact portion 153 extending (inclined) towards the shielding sheet 130. Both the second window 152 and the elastic contact 150 are formed by a stamping process. When the shielding sheet 130 is assembled on the plastic shell 110, the protrusion 132 on the shielding sheet 130 opposite to the first groove 131 is inserted into the second groove 115 and elastically abuts against the elastic member. This arrangement shortens the distance between the shielding sheet 130 and the elastic contact 150, allowing the length of the elastic contact 150 to maintain greater elastic force.

[0045] Please see Figure 6 , Figure 6This is a schematic diagram of one embodiment of the electrical connector of this utility model. The electrical connector shown includes an electrical insulating housing 200 and a plurality of plug-in modules 100 disposed on the electrical insulating housing 200 and distributed in parallel at intervals. The plurality of plug-in modules 100 are evenly spaced along their thickness direction, and after being inserted into the electrical insulating housing 200, the plurality of plug-in modules 100 are assembled together by the right-angled fixing member 140 described above. The side of the electrical insulating housing 200 facing the mating end 100a can be defined as the insertion abutment surface when mating with a complementary electrical connector, and the side of the electrical insulating housing 200 facing the mounting end 100b can be defined as the mounting abutment surface when mating with a substrate. The electrical insulating housing 200 has a plurality of plug-in cavities 210, and the plurality of plug-in modules 100 are inserted into the plug-in cavities 210 one by one. Each insertion cavity 210 has a guide slot 220 at one end along its length. The guide slot 220 is larger in dimension along the insertion direction than the length of the insertion cavity 210 in the corresponding direction, so as to guide the guide block 114a mentioned above, and at the same time cover and support the insertion module 100. The electrical insulation shell 200 is a known structure, so it will not be described in detail here.

[0046] The plug-in module 100 and electrical connector of this utility model, adopting the structure shown in the above embodiments, can achieve at least the following functions and effects: the traditional break-type groove is designed as an integral groove that matches the length of a section of the grounding terminal 12a embedded in the plastic shell 110, which can reduce structural complexity and manufacturing difficulty, while also improving shielding and anti-crosstalk capabilities; the integral groove is formed by stamping process, so that the side of the shielding sheet 130 facing the plastic shell 110 forms a protrusion 132, and the width of the groove determines the width of the contact surface between the protrusion 132 and the plastic shell 110; except for the narrower width of the first groove 131 near the mounting end 100b, the width of the other first grooves 131 is relatively wide (relative to the narrower first groove 131), which can not only increase the holding force and stability with the elastic contact 150, but also optimize high-speed signal transmission by setting different groove widths according to design requirements.

[0047] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A plug-in module, comprising a plastic housing, a plurality of grounding terminals disposed within the plastic housing, a signal terminal disposed between each adjacent grounding terminal, and a shielding sheet disposed on one side of the plastic housing, wherein one end of each grounding terminal and signal terminal extends out of the plastic housing to form a mating end, and the other end extends out of the plastic housing to form a mounting end, characterized in that: The shielding sheet has a first groove recessed towards the plastic shell at the position corresponding to each grounding terminal, and the first groove is distributed on the shielding sheet along the length direction of the grounding terminal.

2. The plug-in module as described in claim 1, characterized in that: The length and distribution direction of the first groove are adapted to the length and distribution direction of a section of the grounding terminal embedded in the plastic shell.

3. The plug-in module as described in claim 2, characterized in that: The mating ends of the grounding terminal and the signal terminal both extend out of the plastic shell along a first direction, and the mounting ends of the grounding terminal and the signal terminal both extend out of the plastic shell along a second direction perpendicular to the first direction. A section of the grounding terminal and the signal terminal embedded in the plastic shell is configured as a curved section, with its two ends pointing towards the first direction and the second direction respectively. The first groove is curved to match the curved section of the grounding terminal; or... The mating ends of the grounding terminal and the signal terminal both extend out of the plastic shell in the first direction, and the mounting ends of the grounding terminal and the signal terminal both extend out of the plastic shell in the opposite direction to the first direction. A section of the grounding terminal and the signal terminal embedded in the plastic shell is configured as a straight segment. The first groove is a straight segment that matches the straight segment of the grounding terminal.

4. The plug-in module as described in claim 1, characterized in that: The width of the first groove near the mounting end is smaller than the width of the other first grooves.

5. The plug-in module as described in claim 1, characterized in that: The width of the first groove near the mounting end is configured to be 0.1 to 3 mm.

6. The plug-in module as described in claim 1, characterized in that: The depth of the first groove is configured to be 0.05 to 1 mm.

7. The plug-in module as described in any one of claims 1 to 6, characterized in that: The first groove is formed by stamping the shielding sheet from the side facing the plastic shell towards the plastic shell, and the shielding sheet has a convex bulge that matches the shape of the first groove on the side facing the plastic shell.

8. The plug-in module as described in claim 7, characterized in that: The convex bulge has a convex surface that contacts one side of the plastic shell.

9. The plug-in module as described in claim 7, characterized in that: The plastic shell has a second groove on one side facing the shielding sheet, which is adapted to the convex bulge. The second groove is used to accommodate the convex bulge and fit tightly with it.

10. An electrical connector, characterized in that, include: An electrically insulating housing having a mating contact surface that abuts against the complementary electrical connector when mated with it, and a mounting contact surface that abuts against it when mounted on a substrate. as well as A plurality of plug-in modules as described in any one of claims 1 to 9, supported by an electrically insulating housing, wherein the mating end of the plug-in module extends out of the plug-in contact surface of the electrically insulating housing, and the mounting end extends out of the mounting contact surface of the electrically insulating housing.

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