Terminal module and electric connector

Abstract

The utility model discloses a terminal module, which comprises at least one signal sheet body, two grounding sheet bodies, at least one metal shielding sheet and a plurality of conductive plastics, the signal sheet body is positioned between the two grounding sheet bodies, the signal sheet body is provided with a plurality of signal terminals, and the grounding sheet body is provided with at least one grounding terminal; the metal shielding sheet is arranged between the two adjacent signal terminals of the same signal sheet body and is separated from the signal terminals, the plurality of conductive plastics are respectively arranged on the two grounding sheet bodies and are connected with the grounding terminals, the conductive plastics and the metal shielding sheet are correspondingly arranged in the left-right direction, and the conductive plastics and the metal shielding sheet are electrically connected. The extending range of the conductive plastic along the left-right direction is located outside the space range defined by the plurality of signal terminals in the signal sheet body between the two grounding sheet bodies in the left-right direction, and the utility model also discloses an electric connector which comprises the structure of the terminal module. The antenna can absorb electromagnetic waves to slow down resonance, and is favorable for improving high-frequency performance.

Description

[Technical field]

[0001] The utility model relates to a terminal module and an electric connector, in particular to a terminal module and an electric connector for improving signal transmission. [Background technology]

[0002] The Chinese patent application number is 202321039136.4, which discloses an electrical connector that is plugged into a pair of mating parts, including an insulating body, a row of first terminals accommodated in the insulating body, a row of second terminals, an insulating part, a shielding sheet, and a plurality of independently arranged shielding reinforcement members, wherein a row of first terminals and a row of second terminals are arranged at intervals in the up and down directions, a row of first terminals are located above a row of second terminals, the mating part is inserted between the row of first terminals and the row of second terminals, and the row of first terminals and the row of second terminals each include a plurality of signal terminals and a plurality of ground terminals, the signal terminals and the ground terminals are accommodated in corresponding insulating parts, the shielding sheet cover is arranged above the plurality of insulating parts, a shielding reinforcement member is arranged across the plurality of insulating parts, and abuts the grounding terminal to form a grounding loop.

[0003] The above structure has the following problems:

[0004] The contact between the shielding reinforcement and the grounding terminal is unstable. After multiple grounding terminals and multiple signal terminals are stacked and assembled, the shielding reinforcement and the grounding terminal may be disconnected. In this way, residual current may exist on the surface of the grounding terminal, and the voltages on the two grounding terminals are prone to inconsistency, which leads to relatively enhanced electromagnetic interference and crosstalk interference, affecting the transmission of the signal terminal.

[0005] Therefore, it is necessary to provide a terminal module and an electrical connector for improving signal transmission to overcome the above-mentioned defects. [Utility Model Content]

[0006] In view of the problems in the background technology, the purpose of the present invention is to provide a terminal module and an electrical connector for improving signal transmission.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a terminal module, comprising: at least one signal sheet and two grounding sheets arranged along a left-right direction, at least one of the signal sheets is located between the two grounding sheets, each of the signal sheets comprises a plurality of signal terminals and a signal retaining frame overmolded outside the plurality of signal terminals, each of the signal terminals has a signal contact exposed outside the signal retaining frame, the grounding sheet comprises at least one grounding terminal and a grounding retaining frame overmolded outside the grounding terminal, at least one of the grounding terminals has a plurality of grounding contacts exposed outside the grounding retaining frame, and the plurality of grounding contacts and the plurality of signal contacts are arranged in at least two rows in a direction perpendicular to the left-right direction. The arrangement comprises: each row including the grounding contact and the signal contact; at least one metal shielding sheet is arranged on at least one signal retaining frame, the metal shielding sheet is located between two adjacent signal terminals of the same signal sheet body and is separated from the signal terminal; a plurality of conductive plastics are arranged on two of the grounding sheet bodies, the conductive plastics are connected to the grounding terminals of the corresponding grounding sheet bodies, and are arranged corresponding to the metal shielding sheets in the left-right direction, the grounding terminals are electrically connected to the metal shielding sheets through the conductive plastics, and the extension range of the conductive plastics along the left-right direction is outside the spatial range defined in the left-right direction by the plurality of signal terminals in the signal sheet body between the two grounding sheet bodies.

[0008] Furthermore, it is defined that the conductive plastic and the metal shielding sheet each have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, and the thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

[0009] Furthermore, a concave-convex matching structure is formed between the conductive plastic and the corresponding metal shielding sheet.

[0010] Furthermore, the conductive plastic has at least one first protrusion exposed from the corresponding grounding holder on one side of the conductive plastic close to the adjacent signal sheet in the left-right direction, and the first protrusion protrudes into the adjacent signal holder to conduct with the corresponding metal shielding sheet.

[0011] Furthermore, the metal shielding sheet has at least one second protrusion exposed from the corresponding signal holder on one side of the metal shielding sheet close to the adjacent grounding sheet body in the left-right direction, and the second protrusion protrudes into the adjacent grounding holder to conduct with the corresponding conductive plastic.

[0012] Furthermore, the conductive plastic has a plurality of first protrusions exposed to the corresponding grounding retaining frame on one side of the signal sheet body adjacent to the adjacent signal sheet body in the left-right direction, and the metal shielding sheet has a plurality of second protrusions exposed to the corresponding signal retaining frame on one side of the grounding sheet body adjacent to the left-right direction, the plurality of first protrusions and the plurality of second protrusions are staggered and engaged with each other, and the first protrusions protrude into the adjacent signal retaining frame to conduct with the corresponding metal shielding sheet, and the second protrusions protrude into the adjacent grounding retaining frame to conduct with the corresponding conductive plastic.

[0013] Furthermore, the signal sheet body is provided with two, and the two signal terminals located in the same row constitute a differential signal pair, and the multiple grounding contacts arranged in at least two rows and the multiple signal contacts form at least one socket for a mating part to be inserted, and the metal shielding sheet is arranged on the two signal sheet bodies, and the left and right sides of the metal shielding sheet are provided with a plurality of the second protrusions protruding into the adjacent grounding retaining frame.

[0014] Furthermore, the signal terminal includes a fixing portion and the signal contact and a signal pin connected to both ends of the fixing portion, the fixing portion is arranged on the signal retaining frame, the fixing portion includes a first part and a second part connected to the first part, the first part is connected to the signal pin, the second part is connected to the signal contact, the width of the first part in the left-right direction is smaller than the width of the second part in the left-right direction, and the conductive plastic is arranged corresponding to the first part.

[0015] Furthermore, the grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of grounding pins connected to the plate body. The plate body is arranged on the corresponding grounding retaining frame and is connected to the corresponding conductive plastic conductor. The grounding pins are all exposed from the corresponding grounding retaining frame. The plurality of grounding pins are arranged at the bottom of the plate body and are spaced apart along a front-to-back direction. The grounding terminal is provided with a through hole passing through along the left-right direction at an upper position corresponding to each adjacent grounding pin.

[0016] The utility model also discloses an electrical connector, comprising: an insulating shell, provided with at least one slot; a plurality of signal sheets and a plurality of grounding sheets accommodated in the insulating shell, the plurality of signal sheets and the plurality of grounding sheets are alternately arranged along a left-right direction, one or two signal sheets are arranged between two adjacent grounding sheets, each of the signal sheets comprises a plurality of signal terminals and a signal retaining frame overmolded outside the plurality of signal terminals, each of the signal terminals has a signal contact exposed from the signal retaining frame, the grounding sheet comprises at least one grounding terminal and a grounding retaining frame overmolded outside the grounding terminal, at least one grounding terminal has a plurality of grounding contacts exposed from the grounding retaining frame, the plurality of grounding contacts and the plurality of signal contacts are arranged in at least two rows along an up-down direction, and each row comprises The invention comprises the grounding contact and the signal contact, each of the signal contact and each of the grounding contacts having a contact portion protruding into the slot; a plurality of metal shielding sheets, respectively provided on at least one of the signal sheet bodies, the metal shielding sheet being located between two adjacent signal terminals of the same signal sheet body and being separated from the signal terminal; a plurality of conductive plastics, respectively provided on one of the grounding sheet bodies, the conductive plastics being connected to the grounding terminal of the corresponding grounding sheet body, and being arranged corresponding to the adjacent metal shielding sheets in the left-right direction, the grounding terminal being electrically connected to the metal shielding sheet through the conductive plastic, and the extension range of the conductive plastic along the left-right direction being outside the spatial range defined by the plurality of signal terminals in the signal sheet body between the two adjacent grounding sheet bodies in the left-right direction.

[0017] Furthermore, it is defined that the conductive plastic and the metal shielding sheet each have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, and the thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

[0018] Furthermore, the conductive plastic has a plurality of first protrusions exposed to the corresponding grounding retaining frame on one side of the signal sheet body adjacent to the adjacent signal sheet body in the left-right direction, and the metal shielding sheet has a plurality of second protrusions exposed to the corresponding signal retaining frame on one side of the grounding sheet body adjacent to the left-right direction, the plurality of first protrusions and the plurality of second protrusions are staggered and engaged with each other, and the first protrusions protrude into the adjacent signal retaining frame to conduct with the corresponding metal shielding sheet, and the second protrusions protrude into the adjacent grounding retaining frame to conduct with the corresponding conductive plastic.

[0019] Furthermore, the signal terminal includes a fixing portion and the signal contact and a signal pin connected to both ends of the fixing portion, the fixing portion is arranged on the signal retaining frame, the fixing portion includes a first part and a second part connected to the first part, the first part is connected to the signal pin, the second part is connected to the signal contact, the width of the first part in the left-right direction is smaller than the width of the second part in the left-right direction, and the conductive plastic is arranged corresponding to the first part.

[0020] Furthermore, the tops of the signal retaining frame and the grounding retaining frame each include a first table top and a second table top, the first table top is higher than the second table top in the up-down direction, and the second table top is close to the signal contact and the grounding contact in the front-to-back direction relative to the first table top; the grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of protrusions connected to the plate body, the top of the plate body on one side close to the grounding contact protrudes from the second table top, and the protrusion is protruding from the top of the plate body and exposed from the first table top; the electrical connector also includes a first shielding plate and a second shielding plate, the first shielding plate cover is disposed on the first table top and in contact with the protrusion, and the second shielding plate cover is disposed on the second table top and in contact with the plate body.

[0021] Further, it is characterized in that: the grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of grounding pins connected to the plate body, the plate body is arranged on the corresponding grounding retaining frame and is connected to the corresponding conductive plastic conductor, the grounding pins are all exposed from the corresponding grounding retaining frame, the plurality of grounding pins are arranged at the bottom of the plate body and are spaced apart along a front-to-back direction, and the grounding terminal is provided with a through hole penetrating along the left-right direction at an upper position corresponding to each adjacent grounding pin.

[0022] The utility model also discloses another electrical connector, comprising: an insulating shell, provided with at least one slot; two grounding terminals arranged side by side on the left and right sides and at least two terminal groups located between the two grounding terminals, the grounding terminals and the terminal groups are accommodated in the insulating shell, at least two terminal groups are arranged at intervals in a direction perpendicular to the left and right directions, each of the terminal groups includes at least one signal terminal, and the signal terminal and the grounding terminal both have a contact portion protruding into the slot; at least one metal shielding sheet is arranged between two adjacent terminal groups in a direction perpendicular to the left and right directions and is separated from the signal terminal; at least two conductive plastics are arranged on the two grounding terminals and are arranged corresponding to the metal shielding sheets in the left and right directions, the grounding terminal is electrically connected to the metal shielding sheet through the conductive plastics, and the extension range of the conductive plastics in the left and right directions is located outside the space range defined by the two adjacent terminal groups corresponding to the two grounding terminals in the left and right directions.

[0023] Furthermore, it is defined that the conductive plastic and the metal shielding sheet each have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, and the thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

[0024] Furthermore, each of the terminal groups includes two signal terminals spaced apart in the left-right direction, the two signal terminals constitute a differential signal pair, and a concave-convex matching structure is formed between the conductive plastic and the corresponding metal shielding sheet.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging the conductive plastic on the grounding sheet, electromagnetic waves can be absorbed to reduce resonance. At the same time, compared with the metal shielding sheet directly contacting the grounding terminal, which is easy to be disconnected, the conductive plastic is used for indirect connection. Within the range allowed by the conductive plastic, even if there is a small gap between the conductive plastic and the metal shielding sheet, the two can be electrically connected. In this way, the assembly accuracy is reduced, the reliability of the electrical connection is improved, and the resonance is suppressed. Moreover, the extension range of the conductive plastic along the left and right directions is outside the spatial range defined by the multiple signal terminals in the signal sheet between the two grounding sheets in the left and right directions, that is, the conductive plastic does not cover the spatial range of the signal terminals in the left and right directions. Compared with the conductive plastic covering the spatial range of the signal terminals, such a setting has less loss for the signal transmission channel and is beneficial to the integrity of the signal transmission.

Brief Description of the Drawings

[0026] Figure 1 It is an exploded view of the electrical connector in the utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view of the electrical connector after being assembled and installed on a circuit board and before being docked with a docking connector;

[0028] Figure 3 for Figure 1 An exploded view of the middle signal sheet, the ground sheet, the first shielding plate, and the second shielding plate;

[0029] Figure 4 for Figure 3 A three-dimensional diagram of a terminal module consisting of two grounding sheets, two signal sheets, a conductive plastic disposed on the grounding sheets, and a metal shielding sheet disposed on the signal sheets;

[0030] Figure 5 for Figure 4 3D exploded view of the middle terminal module;

[0031] Figure 6 for Figure 4 Side view of the middle terminal module;

[0032] Figure 7 for Figure 6 The sectional view taken along the AA section line;

[0033] Figure 8 for Figure 6 The cross-sectional view taken along the BB section line;

[0034] Fig. 9 for Figure 4 The middle terminal module only shows the top view of the signal terminal, ground terminal, and conductive plastic;

[0035] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle;

[0036] Fig.11 for Figure 4 Top view of the middle terminal module after hiding the signal holder and ground holder;

[0037] Fig.12 for Figure 1 The three-dimensional view only shows one ground terminal assembled with a partial first shielding plate and a partial second shielding plate.

[0038] Fig.13 for Fig.12 Specific implementation number:

[0039] Electrical connector 100 Insulation housing 1 Slot 11 Signal sheet 2 Signal terminal 21 Signal contact 211 Signal contact portion 211a Fixed portion 212 Part 1212a Part II 212b Signal pin 213 Signal holder 22 Grounding sheet 3 Ground terminal 31 Ground contact 311 Ground contact portion 311a Plate 312 Protrusion 313 Ground pin 314 Perforation 315 Grounding cage 32 The first table M Second table N Conductive plastic 4 first convex portion 41 The first recessed area 42 Metal shielding sheet 5 second convex portion 51 The second recessed area 52 Terminal module R Terminal group S First shielding plate 6 Second shielding plate 7 Circuit board 200 Docking Connector 300 Butt fitting 301 [Specific implementation method]

[0040] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0041] For the convenience of description, a left-right direction X, a front-back direction Y and an up-down direction Z are defined, and the left-right direction X, the front-back direction Y and the up-down direction Z are perpendicular to each other.

[0042] like Figure 1 , Figure 2 as well as Figure 5 As shown, an electrical connector 100 of the utility model is installed on a circuit board 200 for plugging and matching with a docking connector 300. The electrical connector 100 includes an insulating shell 1 and a plurality of signal sheets 2, a plurality of grounding sheets 3, a plurality of conductive plastics 4, a plurality of metal shielding sheets 5, a first shielding plate 6 and a second shielding plate 7 arranged in the insulating shell 1. The plurality of signal sheets 2 and the plurality of grounding sheets 3 are alternately arranged along the left-right direction X. One or two signal sheets 2 are arranged between two adjacent grounding sheets 3. Each metal shielding sheet 5 is arranged on one or two signal sheets 2 located between two adjacent grounding sheets 3. The plurality of conductive plastics 4 are arranged on the plurality of grounding sheets 3. The conductive plastics 4 are connected to the corresponding metal shielding sheets 5 to form a grounding loop. The first shielding plate 6 and the second shielding plate 7 are arranged on the top surfaces of the grounding sheets 3 and the signal sheets 2 and contact the plurality of grounding sheets 3.

[0043] like Figure 1 and Figure 2 As shown, the insulating housing 1 has at least one slot 11. Specifically, the slot 11 is formed by being recessed from the front end surface of the insulating housing 1, and two slots 11 are provided. The two slots 11 are arranged side by side and spaced apart along the up-down direction Z. The docking connector 300 includes docking members 301 corresponding to the number of slots 11, that is, two docking members 301 are provided corresponding to the slots 11. The two docking members 301 are arranged side by side and spaced apart along the up-down direction Z. The slot 11 is used for inserting the docking members 301. In other embodiments, according to the type requirements of the electrical connector 100, the slot 11 can be recessed downward from the upper surface of the insulating housing 1, and only one slot 11 can be provided, or other numbers of slots 11 can be provided.

[0044] like Figure 4 and Figure 5As shown, the two adjacent grounding sheets 3 on the left and right and at least one signal sheet 2 therebetween, at least one metal shielding sheet 5 provided on at least one signal sheet 2, and a plurality of conductive plastics 4 provided on two adjacent grounding sheets 3 together constitute a terminal module R. Specifically, in this embodiment, two signal sheets 2 are provided between the two grounding sheets 3 in the terminal module R, and the two signal terminals 21 located in the same row in the left-right direction X constitute a differential signal pair. In other embodiments, only one signal sheet 2 may be provided between the two grounding sheets 3 in the terminal module R.

[0045] like Figure 4 and Figure 5 As shown, each of the signal sheets 2 includes a plurality of signal terminals 21 and a signal holder 22. The signal holder 22 is made of an insulating material and is molded over the plurality of signal terminals 21. Each of the signal terminals 21 includes a fixing portion 212, a signal contact 211 connected to the fixing portion 212, and a signal pin 213. The fixing portion 212 is fixed in the signal holder 22. The signal contact 211 and the signal pin 213 are exposed from the signal holder 22. The signal pin 213 is used for welding with the circuit board 200.

[0046] like Figure 1 , Figure 3 and Figure 4 As shown, in the left-right direction X, two adjacent signal terminals 21 located between two adjacent grounding sheets 3 and in the same row constitute a terminal group S, and two adjacent signal sheets 2 located between two adjacent grounding sheets 3 have four terminal groups S, and the four terminal groups S are arranged at intervals along the up-down direction Z.

[0047] like Figure 5 , Fig. 9 as well as Fig.10As shown, in a specific embodiment, the fixing portion 212 includes a first portion 212a and a second portion 212b connected to the first portion 212a, the first portion 212a is connected to the signal pin 213, and the second portion 212b is connected to the signal contact 211. Specifically, the first portion 212a is bent along the left-right direction X to be connected to the second portion 212b, and the width of the first portion 212a in the left-right direction X is smaller than the width of the second portion 212b in the left-right direction X. The second portion 212b and the signal contact 211 are both stamped from metal sheets, and the first portion 212a is formed by bending the sheet surface from the sheet where the second portion 212b is located, so that the sheet where the first portion 212a is located is perpendicular to the sheet where the second portion 212b is located.

[0048] like Figure 4 , Figure 5 as well as Figure 6As shown, each of the grounding sheets 3 includes at least one grounding terminal 31 and a grounding holder 32. The grounding holder 32 is made of insulating material and is molded over the grounding terminal 31. In a specific embodiment, the grounding terminal 31 is provided with one, and the grounding terminal 31 is formed by blanking a metal plate. The grounding terminal 31 includes a plate body 312, a plurality of grounding contacts 311 connected to the plate body 312, a plurality of grounding pins 314, and a plurality of protruding portions 313. The plate body 312 is fixed in the grounding holder 32, and the plurality of grounding contacts 311, the plurality of grounding pins 314, and the plurality of protruding portions 313 are all exposed from the grounding holder 32. The plurality of grounding contacts 311 are connected to the front side of the plate body 312 and are arranged at intervals along the up-down direction Z. The plurality of grounding pins 314 are connected to The bottom of the plate body 312 is arranged at intervals along the front-to-back direction Y. Each grounding terminal 31 is provided with a through hole 315 penetrating along the left-right direction X at the upper position of the plate body 312 corresponding to the grounding pin 314 adjacent to the grounding pin 314. The plurality of grounding pins 314 are used for soldering with the circuit board 200. The through hole 315 is used for soldering with the circuit board 200. The through hole 315 is used for soldering and heat dissipation. Specifically, the through hole 315 is located on the plate body 312. Of course, in other embodiments, the through hole 315 can be located on the grounding pin 314 or between the grounding pin 314 and the plate body 312. The plurality of protrusions 313 are protruding from the top surface of the plate body 312 and are arranged at intervals along the front-to-back direction Y. It is understandable that in other embodiments, in the same grounding sheet body 3, a plurality of grounding terminals 31 may be provided corresponding to the signal terminals 21, and each of the grounding terminals 31 includes a grounding contact 311, a grounding pin 314 and a main body portion (not shown) connecting the grounding contact 311 and the grounding pin 314.

[0049] like Figure 2 , 4 and Figure 5As shown, the plurality of grounding contacts 311 and the plurality of signal contacts 211 are arranged in at least two rows along a direction perpendicular to the left-right direction X, and each row includes a plurality of grounding contacts 311 and a plurality of signal contacts 211. The signal contacts 211 and the grounding contacts 311 both have contact portions protruding into the slot 11, and the contact portions are used to electrically contact the docking piece 301 inserted into the slot 11. The contact portions of the signal contacts 211 are defined as signal contact portions 211a, and the contact portions of the grounding contacts 311 are defined as grounding contact portions 311a. Specifically, each of the signal sheets 2 is provided with four signal terminals 21, the four signal contacts 211 of the four signal terminals 21 are arranged along the up-down direction Z, the four signal pins 213 of the four signal terminals 21 are arranged at intervals along the front-to-back direction Y, each of the grounding sheets 3 is provided with four grounding contacts 311 arranged along the up-down direction Z and four grounding pins 314 arranged at intervals along the front-to-back direction Y, the four grounding contacts 311 and the four signal contacts 211 are arranged one by one in the left-right direction X, and thus, the plurality of grounding sheets 3 are provided with four grounding contacts 311 arranged along the up-down direction Z and four grounding pins 314 arranged at intervals along the front-to-back direction Y. The signal contacts 211 and the ground contacts 311 of the signal sheet 2 and the ground sheets 3 are arranged in four rows, so that each row includes the ground contacts 311 and the signal contacts 211. A socket (not shown) is formed between the two upper rows of the signal contacts 211 and the ground contacts 311, and is arranged corresponding to the upper and lower sides of the slot 11 located at the top. Another socket (not shown) is formed between the two lower rows of the signal contacts 211 and the ground contacts 311, and is arranged corresponding to the upper and lower sides of the slot 11 located at the bottom. In other embodiments, according to requirements, each of the signal sheets 2 can be provided with two or other numbers of the signal terminals 21, and each of the ground sheets 3 is provided with the ground contacts 311 corresponding to the number of the signal contacts 211 of the signal terminals 21. In yet another embodiment, the ground sheet 3 can include a plurality of independently arranged ground terminals 31, and the plurality of ground terminals 31 are held together by the grounding holder 32.

[0050] like Figure 5 , Figure 6 and Figure 7As shown, the conductive plastic 4 is integrally injection molded with the plate 312 in the corresponding grounding sheet 3. The conductive plastic 4 is made of lossy material to absorb electromagnetic waves to achieve the purpose of slowing down resonance, thereby improving the high-frequency performance of the electrical connector 100. The extension range of the conductive plastic 4 along the left-right direction X is outside the spatial range defined by the plurality of signal terminals 21 in the signal sheet 2 between the two grounding sheets 3 in the left-right direction X, that is, the conductive plastic 4 does not cover the signal terminals 21 in the spatial range in the up-down direction Z. Specifically, as Fig. 9 and Fig.10 As shown, the conductive plastic 4 is only disposed corresponding to the first portion 212 a of the fixing portion 212 of the signal terminal 21 , and there is a gap d between the conductive plastic 4 and the first portion 212 a .

[0051] like Figure 5 , Figure 6 and Figure 7 As shown, the metal shielding sheet 5 is made by stamping a metal sheet. Specifically, a metal shielding sheet 5 is provided between two adjacent signal terminals 21 in each signal sheet body 2 along the up-down direction Z, and the metal shielding sheet 5 is separated from the signal terminal 21 by the signal holder 22. The metal shielding sheet 5 is used to play the role of electromagnetic shielding and preventing crosstalk. Specifically, the plurality of conductive plastics 4 provided on each of the two grounding sheet bodies 3 and the plurality of metal shielding sheets 5 provided between the two grounding sheet bodies 3 are provided one by one in the left-right direction X.

[0052] like Figure 7 As shown, the conductive plastic 4 and the metal shielding sheet 5 are defined as having a width in the left-right direction X, and a thickness in a direction perpendicular to the left-right direction X. Specifically, assuming that the thickness of the conductive plastic 4 is L1 and the thickness of the metal shielding sheet 5 is L2, the thickness of the conductive plastic 4 is greater than the thickness of the metal shielding sheet 5, that is, L1>L2. The width of the side of the conductive plastic 4 in the up-down direction Z is greater than the width of the side of the metal shielding sheet 5 in the up-down direction Z. With respect to the consistency of the thickness of the two in the left-right direction X, the side of the metal shielding sheet 5 in the left-right direction X and the side of the conductive plastic 4 in the left-right direction X need to be precisely aligned to obtain a reliable electrical connection. The utility model is configured in this way to reduce the alignment accuracy of the metal shielding sheet 5 and the conductive plastic 4 to achieve the reliability of the electrical connection between the two.

[0053] According to the characteristics of the conductive plastic 4, within the range allowed by the conductive plastic 4, the conductive plastic 4 can be electrically connected to the metal shielding sheet 5, that is, there is no physical contact between the conductive plastic 4 and the metal shielding sheet 5, and the two can be electrically connected. Of course, the conductive plastic 4 can also be in contact with the metal shielding sheet 5 for conduction, or part of the conductive plastic 4 is in direct contact with part of the metal shielding sheet 5, and part of the conductive plastic 4 is not in direct contact with part of the metal shielding sheet 5. No specific limitation is made here and it can be set according to actual conditions.

[0054] like Figure 7 and Figure 8 As shown, in a specific embodiment, the gap between the conductive plastic 4 and the metal shielding sheet 5 is conductive, and there is a gap between the conductive plastic 4 and the metal shielding sheet 5. It can be imagined that the gap is small enough to generate electrical coupling between the conductive plastic 4 and the metal shielding sheet 5 without affecting the quality of signal transmission. Here, the meaning of electrical connection or electrical coupling is, for example, but not limited to: regardless of whether the two elements are actually in contact with each other, when the two elements are electrically connected, the two elements will produce corresponding electrical and electromagnetic changes or influences.

[0055] like Figure 8 and Fig.11 As shown, in order to facilitate the assembly and alignment between the signal sheet body 2 and the grounding sheet body 3, in the present embodiment, the conductive plastic 4 and the metal shielding sheet 5 are electrically connected by a concave-convex matching structure in the left-right direction X. Specifically, the conductive plastic 4 has a plurality of first protrusions 41 exposed from the grounding retaining frame 32 in the left-right direction X, and the plurality of first protrusions 41 are discontinuously arranged along the extension direction of the conductive plastic 4, that is, a first recessed area 42 is provided between two adjacent first protrusions 41. The metal shielding sheet 5 has a plurality of second protrusions 51 exposed from two adjacent signal retaining frames 22 in the left-right direction X, and the plurality of second protrusions 51 are discontinuously arranged along the extension direction of the metal shielding sheet 5, that is, a second recessed area 52 is provided between two adjacent second protrusions 51, and the first protrusion 41 and the second protrusion 51 are staggeredly matched in the left-right direction X, that is, the first protrusion 41 is accommodated in the second recessed area 52, and the second protrusion 51 is accommodated in the first recessed area 42, so that the conductive plastic 4 is electrically connected to the metal shielding sheet 5.

[0056] Of course, in other embodiments, only the conductive plastic 4 may have the first protrusion 41 exposed from the grounding retaining frame 32, while the metal shielding sheet 5 does not protrude from the signal retaining frame 22 between the two adjacent grounding sheet bodies 3. At the same time, the first protrusion 41 may be one or multiple, and only the first protrusion 41 protrudes into the signal retaining frame 22 to be conductive with the metal shielding sheet 5; or only the edge of the metal shielding sheet 5 may have the second protrusion 51 protruding from the signal retaining frame 22 between the two adjacent grounding sheet bodies 3. The second protrusion 51 may be one or multiple, and the second protrusion 51 protrudes into the grounding retaining frame 32 to be electrically connected with the conductive plastic 4.

[0057] like Figure 1 , Figure 3 , Fig.12 and Fig.13 As shown, the first shielding plate 6 and the second shielding plate 7 are both covered on the outside of the signal sheet body 2 and the grounding sheet body 3 and connected to the plurality of grounding terminals 31. Specifically, the tops of the signal holder 22 and the grounding holder 32 each include a first table M and a second table N. The first table M is higher than the second table N in the up-down direction Z. The second table N is arranged close to the signal contact 211 and the grounding contact 311 relative to the first table M in the front-to-back direction Y. The plate body 3 The top of the side of the grounding contact 311 protrudes from the second table N, the protruding portion 313 is protruding from the top of the plate body 312 and exposed to the first table M, the first shielding plate 6 is covered on the first table M and in contact with the protruding portion 313, and the second shielding plate 7 is covered on the second table N and in contact with the plate body 312. Specifically, the protruding portion 313 passes through the bottom surface of the first shielding plate 6 upwards, and a part of the plate body 312 passes through the bottom surface of the second shielding plate 7 upwards. The utility model has the following beneficial effects:

[0058] (1) By arranging the conductive plastic 4 on the grounding sheet 3, electromagnetic waves can be absorbed to reduce resonance. Compared with the metal shielding sheet 5 directly contacting the grounding terminal 31, which is prone to disconnection, the conductive plastic 4 is used for indirect connection. Within the range allowed by the conductive plastic 4, even if there is a small gap between the conductive plastic 4 and the metal shielding sheet 5, the two can be electrically connected. In this way, the assembly accuracy is reduced, the reliability of electrical contact is improved, and the occurrence of resonance is suppressed. At the same time, the extension range of the conductive plastic 4 along the left-right direction X is located outside the spatial range defined by the multiple signal terminals 21 in the signal sheet 2 between the two grounding sheets 3 in the left-right direction X, that is, the conductive plastic 4 does not cover the spatial range of the signal terminals 21 in the left-right direction X. Compared with the conductive plastic 4 covering the spatial range of the signal terminals 21, such a setting has a smaller loss on the signal transmission channel and is beneficial to the integrity of signal transmission.

[0059] (2) The thickness of the conductive plastic 4 is greater than the thickness of the metal shielding sheet 5. This configuration can reduce the alignment accuracy of the metal shielding sheet 5 and the conductive plastic 4 to achieve reliability of electrical connection between the two.

[0060] (3) The conductive plastic 4 and the metal shielding sheet 5 are electrically connected in the left-right direction X by using a concave-convex fit, which facilitates the limited fit between the signal sheet 2 and the grounding sheet 3, thereby simplifying the assembly accuracy of the metal shielding sheet 5 and the conductive plastic 4.

[0061] (4) The width of the first portion 212a in the left-right direction X is smaller than the width of the second portion 212b in the left-right direction X. The conductive plastic 4 is only provided corresponding to the first portion 212a. Thus, the space outside the first portion 212a can be utilized to achieve the compactness of the terminal module R structure. Meanwhile, the conductive plastic 4 does not cover the spatial range of the first portion 212a in the left-right direction X, nor does it cover the spatial range of the second portion 212b in the left-right direction X. Therefore, the loss of the signal transmission channel of the second portion 212b is relatively small. Thus, the high-frequency effect of signal transmission can be improved.

[0062] (5) Each of the grounding terminals 31 is provided with a through hole 315 penetrating along the left-right direction X at an upper position of the board body 312 corresponding to the grounding pin 314 , and the through hole 315 is used for solder creep reflow and heat dissipation when the grounding pin 314 is soldered to the circuit board 200 .

[0063] (6) The first shielding plate 6 and the second shielding plate 7 are respectively arranged one high and one low and cover the top surfaces of the signal sheet 2 and the grounding sheet 3 , so that the shielding range is wider and the shielding effect is stronger.

[0064] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. A terminal module, characterized in that: include: At least one signal sheet and two grounding sheets arranged along a left-right direction, at least one of the signal sheets is located between the two grounding sheets, each of the signal sheets includes a plurality of signal terminals and a signal holder molded over the plurality of signal terminals, each of the signal terminals has a signal contact exposed from the signal holder, the grounding sheet includes at least one grounding terminal and a grounding holder molded over the grounding terminal, at least one of the grounding terminals has a plurality of grounding contacts exposed from the grounding holder, the plurality of grounding contacts and the plurality of signal contacts are arranged in at least two rows along a direction perpendicular to the left-right direction, each row includes the grounding contact and the signal contact; At least one metal shielding sheet, provided on at least one of the signal holding frames, the metal shielding sheet being located between two adjacent signal terminals of the same signal sheet body and being separated from the signal terminals; A plurality of conductive plastics are provided on the two grounding sheet bodies, the conductive plastics are connected to the grounding terminals of the corresponding grounding sheet bodies, and are arranged corresponding to the metal shielding sheet in the left and right directions, the grounding terminals are electrically connected to the metal shielding sheet through the conductive plastics, and the extension range of the conductive plastics along the left and right directions is outside the spatial range defined by the plurality of signal terminals in the signal sheet body between the two grounding sheet bodies in the left and right directions.

2. The terminal module according to claim 1, characterized in that: It is defined that the conductive plastic and the metal shielding sheet have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, respectively. The thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

3. The terminal module according to claim 1, characterized in that: A concave-convex matching structure is formed between the conductive plastic and the corresponding metal shielding sheet.

4. The terminal module according to claim 1, characterized in that: The conductive plastic has at least one first protrusion exposed from the corresponding grounding holder on one side of the adjacent signal sheet in the left-right direction. The first protrusion protrudes into the adjacent signal holder to conduct with the corresponding metal shielding sheet.

5. The terminal module according to claim 1, wherein: The metal shielding sheet has at least one second protrusion exposed from the corresponding signal holder on one side of the metal shielding sheet close to the adjacent grounding sheet in the left-right direction. The second protrusion protrudes into the adjacent grounding holder to conduct with the corresponding conductive plastic.

6. The terminal module according to claim 1, wherein: The conductive plastic has a plurality of first protrusions exposed to the corresponding grounding retaining frame on one side of the signal sheet body adjacent to the adjacent signal sheet body in the left-right direction, and the metal shielding sheet has a plurality of second protrusions exposed to the corresponding signal retaining frame on one side of the grounding sheet body adjacent to the left-right direction. The plurality of first protrusions and the plurality of second protrusions are staggered and engaged with each other, and the first protrusions protrude into the adjacent signal retaining frame to conduct with the corresponding metal shielding sheet, and the second protrusions protrude into the adjacent grounding retaining frame to conduct with the corresponding conductive plastic.

7. The terminal module according to claim 6, characterized in that: The signal sheet bodies are provided with two, and the two signal terminals located in the same row constitute a differential signal pair. The multiple grounding contacts arranged in at least two rows and the multiple signal contacts form at least one socket for a mating part to be inserted. The metal shielding sheet is arranged on the two signal sheet bodies, and the left and right sides of the metal shielding sheet are provided with multiple second protrusions protruding into the adjacent grounding retaining frame.

8. The terminal module according to claim 1, characterized in that: The signal terminal includes a fixing portion and the signal contact and a signal pin connected to both ends of the fixing portion, the fixing portion is arranged on the signal retaining frame, the fixing portion includes a first part and a second part connected to the first part, the first part is connected to the signal pin, the second part is connected to the signal contact, the width of the first part in the left-right direction is smaller than the width of the second part in the left-right direction, and the conductive plastic is arranged corresponding to the first part.

9. The terminal module according to claim 1, characterized in that: The grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of grounding pins connected to the plate body. The plate body is arranged on the corresponding grounding retaining frame and is connected to the corresponding conductive plastic conductor. The grounding pins are all exposed from the corresponding grounding retaining frame. The plurality of grounding pins are arranged at the bottom of the plate body and are spaced apart along a front-to-back direction. The grounding terminal is provided with a through hole penetrating along the left-right direction at an upper position corresponding to each adjacent grounding pin.

10. An electrical connector, characterized in that: include: An insulating housing having at least one slot; A plurality of signal sheets and a plurality of grounding sheets accommodated in the insulating housing, the plurality of signal sheets and the plurality of grounding sheets are alternately arranged in a left-right direction, one or two signal sheets are arranged between two adjacent grounding sheets, each of the signal sheets comprises a plurality of signal terminals and a signal holder molded over the plurality of signal terminals, each of the signal terminals has a signal contact exposed from the signal holder, the grounding sheet comprises at least one grounding terminal and a grounding holder molded over the grounding terminal, at least one grounding terminal has a plurality of grounding contacts exposed from the grounding holder, the plurality of grounding contacts and the plurality of signal contacts are arranged in at least two rows in an up-down direction, and each row comprises the grounding contact and the signal contact, and each of the signal contact and each of the grounding contacts has a contact portion protruding into the slot; A plurality of metal shielding sheets, each of which is disposed on at least one of the signal sheets, wherein the metal shielding sheets are located between two adjacent signal terminals of the same signal sheet and are separated from the signal terminals; A plurality of conductive plastics are respectively arranged on one of the grounding sheets, the conductive plastics are connected to the grounding terminals of the corresponding grounding sheets, and are arranged corresponding to the adjacent metal shielding sheets in the left-right direction, the grounding terminals are electrically connected to the metal shielding sheets through the conductive plastics, and the extension range of the conductive plastics along the left-right direction is outside the spatial range defined by the plurality of signal terminals in the signal sheet between two adjacent grounding sheets in the left-right direction.

11. The electrical connector according to claim 10, wherein: It is defined that the conductive plastic and the metal shielding sheet have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, respectively. The thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

12. The electrical connector according to claim 10, wherein: The conductive plastic has a plurality of first protrusions exposed to the corresponding grounding retaining frame on one side of the signal sheet body adjacent to the adjacent signal sheet body in the left-right direction, and the metal shielding sheet has a plurality of second protrusions exposed to the corresponding signal retaining frame on one side of the grounding sheet body adjacent to the left-right direction. The plurality of first protrusions and the plurality of second protrusions are staggered and engaged with each other, and the first protrusions protrude into the adjacent signal retaining frame to conduct with the corresponding metal shielding sheet, and the second protrusions protrude into the adjacent grounding retaining frame to conduct with the corresponding conductive plastic.

13. The electrical connector according to claim 10, wherein: The signal terminal includes a fixing portion and the signal contact and a signal pin connected to both ends of the fixing portion, the fixing portion is arranged on the signal retaining frame, the fixing portion includes a first part and a second part connected to the first part, the first part is connected to the signal pin, the second part is connected to the signal contact, the width of the first part in the left-right direction is smaller than the width of the second part in the left-right direction, and the conductive plastic is arranged corresponding to the first part.

14. The electrical connector according to claim 10, wherein: The tops of the signal retaining frame and the grounding retaining frame each include a first table top and a second table top, the first table top is higher than the second table top in the up-down direction, and the second table top is close to the signal contact and the grounding contact in the front-to-back direction relative to the first table top; the grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of protrusions connected to the plate body, the top of the plate body on one side close to the grounding contact protrudes from the second table top, and the protrusion is protruding from the top of the plate body and exposed from the first table top; the electrical connector also includes a first shielding plate and a second shielding plate, the first shielding plate cover is disposed on the first table top and in contact with the protrusion, and the second shielding plate cover is disposed on the second table top and in contact with the plate body.

15. The electrical connector according to claim 10, wherein: The grounding terminal includes a plate body and a plurality of grounding contacts and a plurality of grounding pins connected to the plate body. The plate body is arranged on the corresponding grounding retaining frame and is connected to the corresponding conductive plastic conductor. The grounding pins are all exposed from the corresponding grounding retaining frame. The plurality of grounding pins are arranged at the bottom of the plate body and are spaced apart along a front-to-back direction. The grounding terminal is provided with a through hole penetrating along the left-right direction at an upper position corresponding to each adjacent grounding pin.

16. An electrical connector, characterized in that: include: An insulating housing having at least one slot; Two grounding terminals arranged side by side on the left and right sides and at least two terminal groups located between the two grounding terminals, the grounding terminals and the terminal groups are accommodated in the insulating housing, at least two terminal groups are arranged at intervals in a direction perpendicular to the left and right directions, each of the terminal groups includes at least one signal terminal, and the signal terminal and the grounding terminal both have a contact portion protruding into the slot; At least one metal shielding sheet is disposed between two adjacent terminal groups in a direction perpendicular to the left-right direction and is separated from the signal terminal; At least two conductive plastics are provided on the two grounding terminals and are arranged corresponding to the metal shielding sheet in the left-right direction. The grounding terminal is electrically connected to the metal shielding sheet through the conductive plastic. The extension range of the conductive plastic along the left-right direction is outside the space range defined by the two adjacent terminal groups corresponding to the two grounding terminals in the left-right direction.

17. The electrical connector according to claim 16, wherein: It is defined that the conductive plastic and the metal shielding sheet have a width in the left-right direction and a thickness in a direction perpendicular to the left-right direction, respectively. The thickness of the conductive plastic is greater than the thickness of the metal shielding sheet.

18. The electrical connector according to claim 16, wherein: Each of the terminal groups includes two signal terminals spaced apart in the left-right direction, the two signal terminals form a differential signal pair, and a concave-convex matching structure is formed between the conductive plastic and the corresponding metal shielding sheet.

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