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 lead frame, a plurality of grounding terminals disposed in the lead frame, signal terminals disposed between every two adjacent grounding terminals, and a shielding sheet disposed on one side surface of the lead frame. One end of the grounding terminal and one end of the signal terminal extend out of the lead frame to form a matching end, the other end of the grounding terminal and the other end of the signal terminal extend out of the lead frame to form an installation end, and a first penetrating opening is formed in the side wall, between the grounding terminal and the shielding piece, of the lead frame. The electric connector is characterized in that an elastic abutting unit used for enabling the grounding terminal to elastically abut against the shielding sheet is arranged between the grounding terminal and the shielding sheet. The electric connector comprises an electric insulation shell, and the electric insulation shell is provided with a plugging abutting surface which abuts against a complementary electric connector when the electric insulation shell is in plugging cooperation with the complementary electric connector and an installation abutting surface which abuts against the electric insulation shell when the electric insulation shell is installed on a substrate. And a number of the plug modules supported by an electrically insulating housing.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a plug-in module and an electric connector. Background Art

[0002] With the development of 5G and 6G technologies, people have higher and higher demands on the transmission rate of modern data communication transmission systems. As the core bridge of data communication, the SI performance of high-speed backplane connectors will directly affect the transmission rate of modern data communication transmission systems. High-speed backplane connectors usually include a housing and several plug-in modules installed in the assembly housing. Each plug-in module includes a lead frame and a plurality of ground terminals and a plurality of signal terminals arranged in the lead frame, wherein each two adjacent signal terminals form a group of differential signal pairs, and each group of differential signal pairs is distributed between the corresponding two adjacent ground terminals.

[0003] The shielding sheets are arranged between the plug-in modules of the high-speed backplane connector to effectively reduce the crosstalk of the internal lines of the connector. These shielding sheets reduce the electromagnetic coupling between signals, thereby greatly improving its SI performance to meet the transmission requirements of higher speeds. These shielding sheets are usually arranged one-to-one on the side of each plug-in module in the same direction, for example, these shielding sheets are arranged one-to-one on the left side or right side of each plug-in module to shield the signal crosstalk of another adjacent plug-in module. When the shielding sheet is arranged, the shielding sheet is connected to the corresponding side of the lead frame of the plug-in module, and the shielding sheet is contacted with the grounding terminal in the lead frame of the corresponding plug-in module, so as to realize the grounding shielding function. In order to realize the contact between the shielding sheet and the grounding terminal, a window for the grounding terminal to be exposed to the outside is usually opened on the outer side of the lead frame, and the shielding sheet is extended into the window and contacts the grounding terminal. In the previous technology, the shielding sheet often has poor contact with the grounding terminal, which affects the shielding performance of the shielding sheet. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a plug-in module and an electrical connector that can reduce the problem of poor contact between the shielding sheet and the grounding terminal.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a plug-in module is provided, including a lead frame, a plurality of grounding terminals arranged in the lead frame, a signal terminal arranged between each adjacent grounding terminal, and a shielding plate arranged on a side surface of the lead frame, one end of the grounding terminal and the signal terminal extends out of the lead frame to form a mating end, and the other end extends out of the lead frame to form an installation end, a first through-opening is provided on a side wall of the lead frame located between the grounding terminal and the shielding plate, and an elastic abutment unit is provided between the grounding terminal and the shielding plate for making the grounding terminal elastically abut against the shielding plate.

[0006] Furthermore, the elastic abutment unit is defined as a first elastic contact piece provided on the shielding sheet at a position directly opposite to the first through-hole, and the first elastic contact piece is passed through the first through-hole and elastically abuts against the ground terminal.

[0007] Furthermore, the elastic contact unit is defined as a second elastic contact piece provided on the ground terminal, and the second elastic contact piece is passed through the first through opening and elastically contacts the shielding sheet.

[0008] Furthermore, a second through-hole is provided on the ground terminal at a position directly opposite to the first through-hole, the second elastic contact piece is connected to one side of the second through-hole, and the elastic contact piece has an elastic contact portion extending toward the shielding sheet.

[0009] Furthermore, the shielding sheet has a convex portion that penetrates into the first through hole, and the convex portion elastically abuts against the second elastic contact piece.

[0010] Furthermore, the convex portion is formed by stamping through a stamping process.

[0011] Furthermore, the ground terminal and the signal terminal each have an embedded section embedded in the lead frame, a mating end extending from one end of the embedded section to the lead frame, and a mounting end extending from the other end of the embedded section to the lead frame;

[0012] The lead frame is provided with a plurality of first through-holes spaced apart in the length direction of the embedded section of the ground terminal; at least one second elastic contact piece is provided at a position corresponding to each of the first through-holes on the ground terminal; the shielding sheet is provided with a plurality of protrusions corresponding one-to-one to the first through-holes, and the plurality of protrusions are inserted into the first through-holes one-to-one to elastically abut against the corresponding second elastic contact pieces.

[0013] Further, the ground terminal and the signal terminal each have an embedded section embedded in the lead frame, a mating end of the lead frame extending from one end of the embedded section in a first direction, and a mounting end of the lead frame extending from the other end of the embedded section in a second direction perpendicular to the first direction, and the embedded section is arc-shaped;

[0014] Two signal terminals are arranged between every two adjacent ground terminals, and the two signal terminals form a differential signal pair; a plurality of third through-holes are arranged at a position on the lead frame directly opposite to each signal terminal, and the plurality of third through-holes are spaced apart along the length direction of the signal terminals, and each third through-hole passes through a side wall of the lead frame away from the shielding sheet; wherein the length of the third through-hole corresponding to an inner signal terminal in each differential signal pair is less than the length of the third through-hole corresponding to an outer signal terminal.

[0015] In order to solve the above technical problems, another technical solution adopted by the utility model is: to provide an electrical connector, comprising: an electrically insulating housing having a plugging abutment surface abutting against the complementary electrical connector when plugged with the complementary electrical connector and a mounting abutment surface abutting against the substrate when mounted with the substrate; and

[0016] The plug-in module is supported by an electrically insulating housing, wherein the mating end of the plug-in module extends out of the plug-in abutment surface of the electrically insulating housing, and the mounting end of the plug-in module extends out of the mounting abutment surface of the electrically insulating housing.

[0017] Furthermore, the electrical connector has a plurality of plug-in cavities, and two plug-in modules are inserted into the two opposite side walls of each plug-in cavity. The two plug-in modules form a female plug-in pair, and the mating end of the female plug-in pair is mated with the complementary mating end of the male plug-in module of the complementary connector.

[0018] The plug-in module and the electrical connector of the utility model adopt the structure shown in the above-mentioned embodiment, and can at least achieve the following functions and effects: the first through-hole located between the ground terminal and the shielding plate on the lead frame realizes the contact between the ground terminal and the shielding plate, and each contact between the ground terminal and the shielding plate wraps each differential signal pair to prevent signal crosstalk; after the shielding plate is connected to the lead frame, an elastic abutment unit is provided between the ground terminal and the shielding plate, so that the shielding plate and the grounding terminal always maintain elastic contact, effectively solving the problem of poor contact between the shielding plate and the grounding terminal, preventing crosstalk between signals, and improving the quality and transmission speed of high-speed signal transmission; the elastic abutment unit is a second elastic contact piece integrally formed on the grounding terminal by a stamping process, which reduces the complexity of the process and structure and reduces the manufacturing cost; a convex portion with the second elastic contact piece is provided on the shielding plate, and the convex portion extends into the first through-hole, which can reduce the distance between the shielding plate and the second elastic contact piece, improve the elastic abutment force between the shielding plate and the second elastic contact piece, and thus effectively prevent poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of an implementation mode of the electric connector of the utility model.

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the figure.

[0022] Figure 3 It is a bottom view of an electrical insulating housing in one embodiment of the electrical connector of the utility model.

[0023] Figure 4 It is a three-dimensional schematic diagram of an electrical insulation housing in one embodiment of the electrical connector of the utility model.

[0024] Figure 5 It is a structural schematic diagram of a plug-in module in one embodiment of the electrical connector of the utility model.

[0025] Figure 6 yes Figure 5 Exploded diagram.

[0026] Figure 7 yes Figure 6 Enlarged view of part B in the middle.

[0027] Figure 8 yes Figure 5 Schematic diagram of the structure from another perspective.

[0028] Fig. 9 yes Figure 8 Schematic diagram of the structure from a rear-facing perspective, in which the shielding sheet is hidden.

[0029] Fig.10 yes Figure 8 Exploded diagram.

[0030] The meanings of the symbols in the accompanying drawings are:

[0031] Electrical insulation housing 100; plug-in abutment surface 100a; mounting abutment surface 100b; covering portion 110; four inner partition walls 111a; five inner partition walls 111b; covering cavity 112; first covering wall 113a; second covering wall 113b; third covering wall 113c; plug-in mating portion 120; column partition wall 121; stopper 121a; terminal partition wall 121b; accommodating space 121c; plug-in cavity 122;

[0032] Plug-in module 200; first gap J1; lead frame 210; first side wall 211; second side wall 212; first through-hole 213; third through-hole 214; latching protrusion 215; fourth through-hole 216; shielding sheet 220; latching hole 221; second elastic contact piece 222; elastic contact portion 222a; second through-hole 223; protrusion 224; electrical connection terminal 230; mating end 231; mounting end 232; signal terminal 23a; grounding terminal 23b; embedded section 233. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution 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 making creative work are within the scope of protection of the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] See also Figure 1 and Figure 2The electrical connector of the utility model comprises an electrical insulation housing 100 and a plurality of plug-in modules 200 arranged on the electrical insulation housing 100 and distributed at intervals along a first direction X, and each plug-in module 200 is arranged along a second direction Y perpendicular to the first direction X on a horizontal plane. Each plug-in module 200 comprises a lead frame 210, an electrical connection terminal arranged in the lead frame 210, and a shielding sheet 220 arranged on a side of the lead frame 210. A plurality of electrical connection terminals 230 are arranged at intervals along the second direction Y on the lead frame 210, one end of the plurality of electrical connection terminals 230 extends out of the first end of the electrical insulation housing 100, and the other end extends out of the second end of the electrical insulation housing 100. The portion of the plurality of electrical connection terminals 230 extending out of the first end of the electrical insulation housing 100 forms a mating end 231 for plugging and mating with a complementary electrical connector (not shown), and the portion extending out of the second end of the electrical insulation housing 100 forms a mounting end 232 electrically connected to a substrate or other electronic devices. A first gap J1 is formed between each adjacent two electrical connection terminals 230 in each lead frame 210, and the plurality of electrical connection terminals 230 in each lead frame 210 include a plurality of signal terminals 23a and a plurality of ground terminals 23b. In the illustrated embodiment, two adjacent signal terminals 23a form a group of differential signal pairs, and a group of differential signal pairs is distributed between each adjacent two ground terminals 23b. In the illustrated embodiment, the electrical connector is a right-angle electrical connector, and the mating ends 231 of the plurality of electrical connection terminals 230 of the right-angle electrical connector extend out of the first end of the electrical insulation housing 100 along a third direction Z (the third direction Z is the plug-in and unplug direction of the electrical connector), and the mounting end 232 extends out of the second end of the electrical insulation housing 100 perpendicular to the first end along a first direction X or a second direction Y that is perpendicular to the third direction Z.

[0037] The electrical connector of the utility model is described by taking a female connector as a specific example. The side of the electrical insulating housing 100 facing the first direction X is L-shaped, and the first end face (lower end face) of the electrical insulating housing 100 along the third direction Z can be defined as a plug-in abutment face 100a when plugged with a complementary electrical connector, and the second end face of the electrical insulating housing 100 along the second direction Y can be defined as a mounting abutment face 100b (a lateral end face) for mounting with a substrate. The electrical insulating housing 100 includes a covering portion 110 and a plug-in mating portion 120 arranged along the third direction Z.

[0038] The plug-in mating portion 120 includes a plug-in shell, a plug-in space formed in the plug-in shell, and a plurality of column partition walls 121 formed in the plug-in space at intervals along a first direction X, for example, four column partition walls 121. The plurality of column partition walls 121 and the end surface of the plug-in shell facing the plug-in mating direction along a third direction Z form the plug-in abutting surface 100a. The plurality of column partition walls 121 divide the plug-in space into a plurality of plug-in cavities 122 distributed along the first direction X. Two plug-in modules 200 distributed at intervals along the first direction X are arranged in each plug-in cavity 122. The two plug-in modules 200 in each plug-in cavity 122 form a female plug-in pair composed of the plug-in modules 200. The mating end 231 of the female plug-in pair is mated with the complementary mating end of the male plug-in pair of the complementary electrical connector.

[0039] In the illustrated embodiment, the plug housing includes a first side wall 123a, a second side wall 123b, a third side wall 123c, and a fourth side wall 123d connected to the first side wall 123a and the second side wall 123b at one end away from the third side wall 123c. The first side wall 123a, the second side wall 123b, the third side wall 123c, and the fourth side wall 123d are enclosed to form a rectangular frame structure, and the space enclosed by the rectangular frame structure forms the plug-in space, which is connected to the outside along the third direction Z.

[0040] See also Figure 3 , multiple column partition walls 121 can be defined as a first column partition wall 121, a second column partition wall 121, a third column partition wall 121 and a fourth column partition wall 121 that are spaced apart in the insertion space along the first direction X, a first insertion cavity is formed between the first column partition wall 121 and the first side surrounding wall 123a, a second insertion cavity is formed between the first column partition wall 121 and the second column partition wall 121, a third insertion cavity is formed between the second column partition wall 121 and the third column partition wall 121, a fourth insertion cavity is formed between the third column partition wall 121 and the fourth column partition wall 121, and a fifth insertion cavity is formed between the fourth column partition wall 121 and the second side surrounding wall 123b. The female plug-in pairs in each plug-in cavity 122 are inserted therein along the third direction Z, the mating end 231 of one of the plug-in modules 200 in the female plug-in pair is inserted along the third direction Z at the first side wall of the plug-in cavity 122 facing the first direction X, and the mating end 231 of the other plug-in module 200 in the female plug-in pair is inserted along the third direction Z at the second side wall of the plug-in cavity 122 opposite to the first side wall, and a mating space is formed between the mating ends 231 of the two plug-in modules 200 of the female plug-in pair for mating with the complementary mating ends of the complementary connector.

[0041] A stopper 121a is extended along the first direction X at the position of each electrical connection terminal 230 corresponding to the plug-in contact surface 100a of each column of partition walls 121. Both sides of each column of partition walls 121 facing the first direction X are provided with a plurality of terminal partition walls 121b for separating the electrical connection terminals 230 of the corresponding plug-in module 200. Each of the terminal partition walls 121b is used to separate two adjacent electrical connection terminals 230 from each other to prevent the adjacent electrical connection terminals 230 from interfering with each other. That is, each terminal partition wall 121b extends along the first direction X toward the first gap J1 between the two corresponding electrical connection terminals 230. The adjacent signal terminals 23a and the adjacent signal terminals 23a and the grounding terminals 23b in each plug-in module 200 are separated by the corresponding terminal partition wall 121b. The two adjacent terminal partition walls 121b and the corresponding side surfaces of the column of partition walls 121 enclose a receiving space 121c for the corresponding electrical connection terminal 230 to be received therein.

[0042] See also Figure 4 The covering portion 110 includes an outer covering shell and a plurality of inner partitions formed in the inner cavity of the outer covering shell, wherein the plurality of inner partitions are divided into two groups, wherein the number of the inner partitions in one group is consistent with the number of the column partitions 121, for example, four inner partitions 111a, and the four inner partitions 111a are respectively formed by the first to fourth column partitions 121 extending in the third direction Z in a direction away from the plug-in abutment surface 100a. The number of the other group of inner partitions is consistent with the number of the plug-in cavity 122, for example, five inner partitions 111b, and the five inner partitions 111b are located in the middle of the plug-in cavity 122 on the horizontal plane projected in the third direction Z to divide the plug-in cavity 122 into two. The nine inner partitions divide the inner cavity into ten covering cavities 112, and a plug-in module 200 is inserted in each covering cavity 112 to form five groups of female plug pairs. It should be understood that the quantifiers such as four, five, nine, and ten in the embodiments are all exemplified based on the adaptation of ten plug-in modules 200, and are not intended to be limiting of the electrical connector of the present invention.

[0043] The outer covering shell includes a first covering wall 113a, a second covering wall 113b, and a third covering wall 113c that are spaced apart and arranged in parallel along the first direction X. The first covering wall 113a and the first side surrounding wall 123a are located in the same plane, and are formed on the side of the first side surrounding wall 123a that is away from the plug-in abutment surface 100a along the third direction Z. The second covering wall 113b and the second side surrounding wall 123b are located in the same plane, and are formed on the side of the second side surrounding wall 123b that is away from the plug-in abutment surface 100a along the third direction Z. The third covering wall 113c and the third side surrounding wall 123c are located in the same plane, and are formed on the side of the third covering wall 113c that is away from the plug-in abutment surface 100a along the third direction Z. The enclosed structure of the first covering wall 113a, the second covering wall 113b and the third covering wall 113c enables the outer covering shell of the covering portion 110 to form openings at one end away from the plug-in abutting surface 100a along the third direction Z and at one end away from the third covering wall 113c along the second direction Y, and the mounting end 232 of the plug-in module 200 extends out of the electrical insulation housing 100 from the opening at one end away from the third covering wall 113c along the second direction Y. The mounting abutting surface 100b is formed by the multiple inner partition walls, the first covering wall 113a and the second covering wall 113b at one end away from the third covering wall 113c along the second direction Y.

[0044] See also Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10Each plug-in module 200 includes a lead frame 210, a plurality of signal terminals 23a and ground terminals 23b spaced and coated in the lead frame 210 along the second direction Y, and a shielding sheet 220 disposed on the lead frame 210 for shielding signal interference between differential signal pairs in two adjacent lead frames 210. The mating ends of the plurality of signal terminals 23a and ground terminals 23b extend out of one end of the lead frame 210 along the third direction Z, so as to be located in the corresponding accommodation space 121c, and a second gap is formed between the mating end of each electrical connection terminal 230 facing the surface of the column partition wall 121 and the column partition wall 121. When each electrical connection terminal 230 is plugged and mated with the corresponding electrical connection terminal 230 of the complementary electrical connector, it will not abut against the column partition wall 121 when it is squeezed by the scraping force of the complementary electrical connection terminal 230 and moves toward the column partition wall 121, thereby protecting the mating end of each electrical connection terminal 230 from damage. The mounting ends 232 of the plurality of signal terminals 23a and the ground terminals 23b extend out of the lead frame 210 along the second direction Y. It should be understood that the mounting ends 232 of the plurality of signal terminals 23a and the ground terminals 23b may also extend out of the lead frame 210 along the first direction X, as long as the first direction X is a direction at right angles to the third direction Z.

[0045] The mating ends 231 of the multiple electrical connection terminals 230 in each lead frame 210 are distributed at intervals along the second direction Y at the first end of the lead frame 210, and each mating end 231 extends out of the first end of the lead frame 210 along the third direction Z, and the mating end 231 extending out of the first end of the lead frame 210 also extends out of the first end of the electrical insulation housing 100. The mounting ends 232 of the multiple electrical connection terminals 230 in each lead frame 210 are distributed at intervals along the third direction Z at the second end of the lead frame 210, and each mounting end 232 extends out of the second end of the lead frame 210 along the second direction Y, and the mounting end 232 extending out of the lead frame 210 also extends out of the second end of the electrical insulation housing 100. A section of each electrical connection terminal 230 embedded in the lead frame 210 is distributed in the lead frame 210 in an arc shape (in order to better adapt to the right-angle electrical connector). That is, the ground terminal 23b and the signal terminal 23a both have an embedded section 233 embedded in the lead frame 210, a mating end 231 extending from one end of the embedded section 233 to the lead frame 210, and a mounting end 232 extending from the other end of the embedded section 233 to the lead frame 210.

[0046] The lead frame 210 has a first side wall 211 covering the first side of the plurality of electrical connection terminals 230 (signal terminals 23a and ground terminals 23b) along the first direction X, a second side wall 212 covering the second side of the plurality of electrical connection terminals 230 along the first direction X, and a partition bar separating each two adjacent electrical connection terminals 230 along the second direction Y.

[0047] A first through-hole 213 is provided at a position corresponding to each ground terminal 23b on the first side wall 211 of each lead frame 210 along the first direction X, and there is at least one first through-hole 213. In the illustrated embodiment, there are multiple first through-holes 213 corresponding to each ground terminal 23b, and the multiple first through-holes 213 are distributed at intervals on the first side wall 211 of the lead frame 210 along the length direction of the embedded section 233 of the corresponding ground terminal 23b, and each first through-hole 213 penetrates the first side wall 211 of the lead frame 210 along the first direction X (the thickness direction of the lead frame 210).

[0048] A third through-hole 214 is provided at a position corresponding to each signal terminal 23a on the second side wall 212 of each lead frame 210 along the first direction X, and the number of the third through-hole 214 is at least one. In the illustrated embodiment, there are a plurality of third through-holes 214 corresponding to each signal terminal 23a, and the plurality of third through-holes 214 are distributed at intervals on the second side wall 212 of the lead frame 210 along the length direction of the embedded section 233 of the corresponding signal terminal 23a, and each third through-hole 214 passes through the second side wall 212 of the lead frame 210 along the first direction X. Among them, in each pair of differential signal pairs, there are inner signal terminals 23a on the inner side and outer signal terminals 23a on the outer side (the bending length of the outer signal terminals 23a is greater than the bending length of the inner signal terminals 23a), and the length L1 of the third through-hole 214 (hereinafter referred to as the inner third through-hole 214) directly opposite to the inner signal terminals 23a is less than the length L2 of the third through-hole 214 (hereinafter referred to as the outer third through-hole 214) directly opposite to the outer signal terminals 23a, so that the high-speed signal transmission performance can be better improved. Preferably, a plurality of fourth through-holes 216 are provided at positions directly opposite to the outer signal terminals 21a on the first side wall 211 of each lead frame 210, and the position, shape and size of each fourth through-hole 216 can be adapted to the portion of the corresponding outer third through-hole 214 that exceeds the inner third window 214, so as to better improve the high-speed signal transmission performance.

[0049] The shielding sheet 220 of each plug-in module 200 is disposed on the outer side of the first side wall 211 of the corresponding lead frame 210. Specifically, a protruding portion 215 for mounting and cooperating with the shielding sheet 220 is disposed on the outer side of the first side wall 211 of each lead frame 210, and a hole portion 221 for mounting and cooperating with the protruding portion 215 is disposed on the shielding sheet 220 at a position directly facing the protruding portion 215.

[0050] An elastic abutment unit is provided between the shielding sheet 220 and each grounding terminal 23b, and is used to elastically abut the grounding terminal 23b against the shielding sheet 220. The elastic abutment unit can be defined as a second elastic contact piece 222 provided on the grounding terminal 23b, and the second elastic contact piece 222 is passed through the first through-hole 213 and elastically abuts against the shielding sheet 220. Specifically, at least one second elastic contact piece 222 is provided at a position corresponding to each first through-hole 213 on the grounding terminal 23b. The second elastic contact piece 222 can be integrally formed at a position on the grounding terminal 23b that is opposite to the first through-hole 213. For example, in the embodiment shown in the accompanying drawings, a second through-hole 223 is provided at a position on each grounding terminal 23b that is opposite to the first through-hole 213, and the second elastic contact piece 222 is connected to one side of the second through-hole 223, and the elastic contact piece has an elastic contact portion 222a extending (inclined) toward the shielding sheet 220, and the second through-hole 223 and the second elastic contact piece 222 are both formed by a stamping process.

[0051] In order to make the elastic contact between the shielding sheet 220 and the grounding terminal 23b more stable, the length of the second elastic contact piece 222 is shortened to keep a larger elastic force, and a convex portion 224 penetrating into the first through-hole 213 is formed on the surface of the shielding sheet 220, which is directly opposite to at least one of the first through-holes 213. The convex portion 224 is formed by stamping, and the convex portion 224 elastically abuts against the elastic contact portion 222a of the second elastic contact piece 222. In this embodiment, the shielding sheet 220 is provided with a plurality of convex portions 224 corresponding to the first through-hole 213, and the plurality of convex portions 224 are correspondingly inserted into the first through-hole 213 to elastically abut against the corresponding second elastic contact piece 222. The above is only an exemplary description of the elastic abutment unit of the utility model based on the preferred embodiment shown in the drawings. It should be understood that the elastic abutment unit is not limited to the above-mentioned form. For example, in some embodiments, the elastic abutment unit is defined as a first elastic contact piece (not shown) disposed on the shielding sheet 220 at a position opposite to the first opening 213, and the first elastic contact piece is passed through the first opening 213 and elastically abuts against the ground terminal 23b.

[0052] The plug-in module and the electrical connector of the utility model adopt the structure shown in the above-mentioned embodiment, and can at least achieve the following functions and effects: the first through-hole located between the ground terminal and the shielding plate on the lead frame realizes the contact between the ground terminal and the shielding plate, and each contact between the ground terminal and the shielding plate wraps each differential signal pair to prevent signal crosstalk; after the shielding plate is connected to the lead frame, an elastic abutment unit is provided between the ground terminal and the shielding plate, so that the shielding plate and the grounding terminal always maintain elastic contact, effectively solving the problem of poor contact between the shielding plate and the grounding terminal, preventing crosstalk between signals, and improving the quality and transmission speed of high-speed signal transmission; the elastic abutment unit is a second elastic contact piece (spring piece) integrally formed on the grounding terminal by a stamping process, which reduces the complexity of the process and structure and reduces the manufacturing cost; a convex portion with the second elastic contact piece is provided on the shielding plate, and the convex portion extends into the first through-hole, which can reduce the distance between the shielding plate and the second elastic contact piece, improve the elastic abutment force between the shielding plate and the second elastic contact piece, and thus effectively prevent poor contact.

[0053] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A plug-in module, comprising a lead frame, a plurality of ground terminals arranged in the lead frame, a signal terminal arranged between each adjacent ground terminal, and a shielding sheet arranged on a side of the lead frame, wherein one end of the ground terminal and the signal terminal extends out of the lead frame to form a mating end, and the other end extends out of the lead frame to form a mounting end, and a first through hole is arranged on a side wall of the lead frame between the ground terminal and the shielding sheet, characterized in that: An elastic contact unit for making the ground terminal and the shielding sheet elastically contact each other is arranged between the ground terminal and the shielding sheet.

2. The plug-in module according to claim 1, characterized in that: The elastic abutment unit is defined as a first elastic contact piece provided on the shielding sheet at a position directly facing the first through-hole, and the first elastic contact piece is passed through the first through-hole and elastically abuts against the ground terminal.

3. The plug-in module according to claim 1, characterized in that: The elastic contact unit is defined as a second elastic contact piece provided on the ground terminal, and the second elastic contact piece is passed through the first through opening and elastically contacts the shielding sheet.

4. The plug-in module according to claim 3, characterized in that: A second through-hole is arranged on the ground terminal at a position directly opposite to the first through-hole, the second elastic contact piece is connected to one side of the second through-hole, and the elastic contact piece has an elastic contact portion extending toward the shielding sheet.

5. The plug-in module according to claim 3, characterized in that: The shielding sheet has a convex portion which penetrates into the first through hole, and the convex portion elastically abuts against the second elastic contact piece.

6. The plug-in module according to claim 5, characterized in that: The convex portion is formed by punching through a punching process.

7. The plug-in module according to claim 5, characterized in that: The ground terminal and the signal terminal each have an embedded section embedded in the lead frame, a mating end extending from one end of the embedded section out of the lead frame, and a mounting end extending from the other end of the embedded section out of the lead frame; The lead frame is provided with a plurality of first through-holes spaced apart in the length direction of the embedded section of the ground terminal; at least one second elastic contact piece is provided at a position corresponding to each of the first through-holes on the ground terminal; the shielding sheet is provided with a plurality of protrusions corresponding one-to-one to the first through-holes, and the plurality of protrusions are inserted into the first through-holes one-to-one to elastically abut against the corresponding second elastic contact pieces.

8. The plug-in module according to claim 1, characterized in that: The ground terminal and the signal terminal each have an embedded section embedded in the lead frame, a mating end of the lead frame extending from one end of the embedded section in a first direction, and a mounting end of the lead frame extending from the other end of the embedded section in a second direction perpendicular to the first direction, wherein the embedded section is arc-shaped; Two signal terminals are arranged between every two adjacent ground terminals, and the two signal terminals form a differential signal pair; a plurality of third through-holes are arranged at a position on the lead frame directly opposite to each signal terminal, and the plurality of third through-holes are spaced apart along the length direction of the signal terminals, and each third through-hole passes through a side wall of the lead frame away from the shielding sheet; wherein the length of the third through-hole corresponding to an inner signal terminal in each differential signal pair is less than the length of the third through-hole corresponding to an outer signal terminal.

9. An electrical connector, characterized in that: include: An electrically insulating housing having a plugging abutment surface for abutting against the complementary electrical connector when plugged in with the complementary electrical connector and a mounting abutment surface for abutting against the substrate when mounted thereon; as well as A plurality of plug-in modules as claimed in any one of claims 1 to 8 are supported by an electrically insulating housing, wherein the mating end of the plug-in module extends out of the plug-in abutment surface of the electrically insulating housing, and the mounting end extends out of the mounting abutment surface of the electrically insulating housing.

10. The electrical connector according to claim 9, wherein: The electrical connector has a plurality of plug-in cavities, and two plug-in modules are inserted into the two opposite side walls of each plug-in cavity. The two plug-in modules form a female plug-in pair, and the mating end of the female plug-in pair is mated with the complementary mating end of the male plug-in module of the complementary connector.

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