Electrical connector

Abstract

The application discloses an electric connector, which comprises an insulating body and a plurality of transmission modules. Each transmission module comprises a terminal assembly and a cable assembly. Each terminal assembly comprises two terminals and a shielding shell. Each terminal has a contact portion, a wiring portion and an intermediate portion. The first shielding portion of the shielding shell is arranged outside the wiring portions of the two terminals, and the first shielding portion is provided with an open area exposing the two wiring portions. A conducting tab is electrically connected with the shielding shells of the terminal assemblies in the same row. The conducting tab shields the open areas of the shielding shells in the same row. Each first shielding portion and the conducting tab jointly form a shielding space and are arranged outside the corresponding two wiring portions. The application can provide good shielding for the wiring portions of the terminals and reduce the crosstalk interference on the terminals. Meanwhile, the conducting tab connects the shielding shells in the same row into a whole grounding structure, thereby improving the signal crosstalk.

Description

TECHNICAL FIELD

[0001] The present application relates to an electrical connector, and more particularly to an electrical connector capable of reducing crosstalk interference.

BACKGROUND

[0002] A conventional electrical connector, such as Chinese patent CN200910126715.0, includes a plurality of terminal modules, each of which includes a plurality of conductors and a body that holds the plurality of conductors, the conductors having wire ends that are soldered to wires of a cable, the body including a frame member and an insertion portion that is molded to the wire ends and the wires. In order to solder the wires and the wire ends, the wire ends of the conductors extend out of the frame member and are not shielded by a common member. However, during signal transmission, because both the wires and the conductors are transmitting current, the electromagnetic field around the wire ends is more concentrated than other locations, and the wire ends are more susceptible to interference from other signals. The electrical connector is greatly affected by crosstalk.

[0003] Therefore, there is a need to provide a new electrical connector to overcome the above problems.

SUMMARY

[0004] The present application provides an electrical connector that facilitates connection of the terminal and the wire through an open area, shields the open area with the lead-over and a shielding space defined by the first shielding portion and the lead-over, and provides good shielding for the terminal through the shielding space, thereby reducing crosstalk interference on the terminal. In addition, the lead-over and the plurality of shielding shells in the same row are connected together to form a whole grounding structure, so that the potential of the lead-over and the plurality of shielding shells is equal, and the current path of grounding is increased, thereby further improving signal crosstalk and improving the efficiency of shielding and grounding.

[0005] To achieve the above object, the present application adopts the following technical scheme: An electric connector comprises at least one electric module, the electric module comprises: an insulating body; a plurality of transmission modules arranged in at least one row along a first direction, each of the transmission modules comprises a terminal assembly fixed to the insulating body and a cable assembly connected with the terminal assembly, each of the terminal assemblies comprises two terminals arranged side by side and a shielding shell surrounding the two terminals, the shielding shell is electrically isolated from the two terminals, each of the terminals has a contact part for being connected with a mating connector, a wiring part for being connected with a wire of the corresponding cable assembly and an intermediate part connecting the contact part and the wiring part, a first shielding part of the shielding shell is arranged outside the wiring parts of the two terminals, and the first shielding part is provided with an open area exposing the two wiring parts; a conductive tab is fixed to the insulating body and electrically connected with the shielding shells of the terminal assemblies in the same row, the conductive tab shields the open area of the shielding shells in the same row, and each of the first shielding parts and the conductive tab jointly forms a shielding space and surrounds the outside of the corresponding two wiring parts.

[0006] Further, each of the terminal assemblies further comprises an insulating block fixed to the two terminals, the insulating block insulates and isolates the two terminals from the shielding shell, and the insulating block is provided with an air slot at the position of the wiring part, and the wiring parts of the two terminals are isolated by air.

[0007] Further, each of the terminals further comprises a tail part extending from the wiring part, and the insulating block is further provided with an isolation block located between the two tail parts of the terminal assembly and between the two wires connected with the two terminals of the terminal assembly.

[0008] Further, each of the cable assemblies comprises two wires, an insulating layer covering the wires and a shielding layer covering the outside of the insulating layer, each of the cable assemblies further comprises a grounding ring sleeved and contacting the shielding layer of the cable assembly; the first shielding part extends to contact the grounding ring, and the shielding space surrounds the outside of the wiring parts and the outside of a part of the grounding ring.

[0009] Further, the first shielding part comprises a first wall and a second wall arranged oppositely and a third wall connected between the first wall and the second wall, the third wall is arranged opposite to the open area, the first wall and the second wall are both bent and extended towards the grounding ring to form shielding contact arms for contacting the grounding ring, the edges of the shielding contact arms are connected with the third wall, the third wall contacts the grounding ring, and a part of the conductive tab contacts the grounding ring.

[0010] Further, the conductive tab has a main body portion and a plurality of abutting portions extending from the main body portion toward the plurality of grounding rings of the same row, the main body portion shielding the open region of the shielding shell of the same row, and an air gap being present between the main body portion and the grounding rings, and a distal end of each of the abutting portions being obliquely extended and in contact with the corresponding grounding ring, and a groove being provided in a middle portion of the distal end of the abutting portion, and a maximum width of the groove being less than a width of the grounding ring.

[0011] Further, the shielding shell further comprises the second shielding portion integrally connected with the first shielding portion, the second shielding portion comprises four side walls and is arranged outside the contact portions of the two terminals, and the conductive tab is limited by at least one side wall of the second shielding portion along the extension direction of the contact portions.

[0012] Further, the plurality of transmission modules comprises a plurality of first transmission modules arranged in a first row along the first direction and a plurality of second transmission modules arranged in a second row along the first direction, and the first row and the second row are parallel along a second direction perpendicular to the first direction; the insulating body is provided with an extension portion for fixing the cable assemblies, the extension portion is provided with a first filling space at a position corresponding to the cable assemblies of the first transmission modules, the extension portion is provided with a second filling space at a position corresponding to the cable assemblies of the second transmission modules, and the extension portion is further provided with at least one flow hole for communicating the first filling space and the second filling space; the electrical module further comprises an insulating material integrally formed and filled in the first filling space, the flow hole and the second filling space, and the insulating material and the extension portion jointly fix the cable assemblies of the first row and the second row.

[0013] Further, the first filling space comprises a plurality of first grooves for accommodating the plurality of cable assemblies of the first row, and the second filling space comprises a plurality of second grooves for accommodating the plurality of cable assemblies of the second row, and the extension portion is provided with a spacing portion between adjacent two first grooves and between adjacent two second grooves; projections of the first grooves and the second grooves along the second direction are staggered, and the flow hole is located in the spacing portion and penetrates through the spacing portion.

[0014] Further, each of the terminals further comprises an insulating block fixed to the two terminals, the insulating block is located in the shielding shell and insulates the two terminals from the shielding shell, the insulating block is provided with at least one first limiting slot, the shielding shell is provided with at least one second limiting slot, the second limiting slot corresponds to the position of the corresponding first limiting slot and exposes the corresponding first limiting slot; the lead-through piece is provided with a main body part and a plurality of limiting parts extending from the main body part, the main body part shields the open area of the shielding shell in the same row, and each of the limiting parts enters the first limiting slot of at least one of the shielding shells and the second limiting slot corresponding to the first limiting slot.

[0015] Compared with the prior art, the electric connector provided by the application has the following beneficial effects: the open area can facilitate the connection of the wires to the wiring part, the lead-through piece shields the open area, which can avoid external interference signals from being transmitted to the wiring part through the open area, the shielding space can more comprehensively shield the interference signals for the wiring part, the lead-through piece connects the shielding shells in the same row into a whole grounding structure, so that the electric potential of the lead-through piece and the shielding shells is equal, signal crosstalk is improved, the current path of grounding is increased, interference signals received can be quickly transmitted out, and the shielding and grounding efficiency is improved. Compared with the shielding space being surrounded by two separated parts of the first shielding part and then connecting the shielding shells through the lead-through piece, the application does not need to combine the two separated parts of the first shielding part to form the shielding space, which can fully utilize the shielding area of the lead-through piece and reduce the material consumption of the shielding shells, thereby saving the cost of the electric connector. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a partial exploded view of the electric connector of the embodiment of the application;

[0017] Figure 2 It is a perspective exploded view of an electric module of the embodiment of the application from one viewing angle;

[0018] Figure 3 It is a perspective exploded view of an electric module of the embodiment of the application from another viewing angle;

[0019] Figure 4 It is a perspective assembly view of an electric module of the embodiment of the application;

[0020] Figure 5 It is a plan view of an electric module of the embodiment of the application along the X axis;

[0021] Figure 6 It is a sectional view along the line A-A;

[0022] Figure 7 isometric exploded view of a transmission module of an embodiment of the present application;

[0023] Figure 8 isometric assembled view of a transmission module of an embodiment of the present application;

[0024] Figure 9 plan view of a transmission module of an embodiment of the present application along the X axis;

[0025] Figure 10 partial isometric view of an assembled transmission module and lead tab of an embodiment of the present application;

[0026] Figure 11 partial plan view of an assembled transmission module and lead tab of an embodiment of the present application along the X axis;

[0027] Figure 12 isometric view along the B-B line.

[0028] Explanation of the figures of the detailed description:

[0029] Electric connector 100 Insulating shell 1 Electric module 2 Insulating body 3 Elastic arm 31 Extension 32 First filling space 321 First groove 3211 Second filling space 322 Second groove 3221 Overflow hole 323 Spacing part 324 First transmission module 4a Second transmission module 4b Terminal assembly 5 Terminal 51 Contact part 511 Intermediate part 512 Wiring part 513 Tail part 514 Insulating block 52 Air groove 521 Isolating block 522 First limiting groove 523 Shielding shell 53 First shielding part 531 Open area 5311 First wall 5312 Second wall 5313 Third wall 5314 Shielding contact arm 5315 Second shielding part 532 Side wall 5321 Second limiting groove 5322 Cable assembly 6 Conductor 61 Insulating layer 62 Shielding layer 63 Insulating sheath 64 Ground ring 7 Conductive sheet 8 Main body 81 Butt part 82 Groove 821 Limiting part 83 Insulating material 9 Air gap g First direction Z Second direction X Third direction Y

DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure, features and effects of the present application, the present application will be further described in conjunction with the drawings and specific embodiments.

[0031] In order to more conveniently understand the technical solutions of the present application, the Z axis in the three-dimensional coordinate axis in the drawings of the specification is defined as the first direction, the X axis is defined as the second direction, and the Y axis is defined as the third direction. The X axis, the Y axis and the Z axis are perpendicular to each other in pairs.

[0032] Please refer to Figures 1-3The electric connector 100 provided by the embodiment comprises a plurality of electric modules 2 arranged along a second direction X and an insulating shell 1 for accommodating and fixing the electric modules 2. Each electric module 2 comprises an insulating body 3 and a plurality of transmission modules fixed to the insulating body 3. The plurality of transmission modules comprise a plurality of first transmission modules 4a arranged in a first row along a first direction Z and a plurality of second transmission modules 4b arranged in a second row along the first direction Z. The first row and the second row are arranged adjacently and parallelly along the second direction X. Two elastic arms 31 are arranged on two sides of the insulating body 3. The electric module 2 and the insulating shell 1 are fixed to each other through the elastic arms 31. The electric module 2 can be flexibly taken out from the insulating body 3 by pressing the elastic arms 31, so that the electric module 2 can be flexibly replaced. The electric module 2 further comprises two lead-through sheets 8 for connecting the first transmission modules 4a in the first row and the second transmission modules 4b in the second row respectively. The electric connector 100 is connected to a mating connector along a third direction Y. One end of a conductor of the mating connector is connected to the terminal 51 of the electric connector 100, and the other end of the conductor of the mating connector can be connected to a circuit board or a cable. In the embodiment, the first transmission modules 4a in the first row and the second transmission modules 4b in the second row are staggered with each other, and are not directly opposite along the second direction X. The projections of the terminals 51 of the first row and the second row along the second direction X are completely staggered, so that the mutual crosstalk between the terminals 51 of the adjacent two rows is reduced.

[0033] Please refer to Figures 2-6The insulation body 3 is provided with an extension 32 for fixing the cable assemblies 6, the extension 32 is provided with a first filling space 321 corresponding to the position of the cable assemblies 6 of the first transmission module 4a, the extension 32 is provided with a second filling space 322 corresponding to the position of the cable assemblies 6 of the second transmission module 4b, and the extension 32 is further provided with a plurality of flow holes 323 for connecting the first filling space 321 and the second filling space 322. The electrical module 2 further comprises an insulation material 9 integrally formed and filled in the first filling space 321, the flow holes 323 and the second filling space 322, and the insulation material 9 and the extension 32 jointly fix the cable assemblies 6 of the first row and the second row. Thus, the swing of the cable assemblies 6 can be reduced, and the poor contact or the lifting of the contact piece 8 caused by the swing of the cable assemblies 6 can be avoided. At the same time, the two rows of cable assemblies 6 can be fixed together by the insulation material 9, so that the two rows of cable assemblies 6 can be restrained by each other, and the position stability of the two rows of cable assemblies 6 is better. Compared with the fixing of the two rows of cable assemblies 6 by the insulation material 9 twice, the embodiment can also reduce the molding steps of the electrical connector 100, which is beneficial to simplify the production operation. The flow holes 323 are used for the flow of the insulation material 9 from one side of the extension 32 to the other side. The first filling space 321 comprises a plurality of first grooves 3211 for accommodating the cable assemblies 6 of the first row, the second filling space 322 comprises a plurality of second grooves 3221 for accommodating the cable assemblies 6 of the second row, and the extension 32 is provided with a spacing portion 324 between adjacent two first grooves 3211 and between adjacent two second grooves 3221. The projections of the first grooves 3211 and the second grooves 3221 along the second direction X are staggered, and the flow holes 323 are located in the spacing portions 324 and penetrate through the spacing portions 324. Compared with the first grooves 3211 and the second grooves 3221 being aligned along the second direction X, the spacing portions 324 on both sides of the insulation body 3 being aligned, and the number of flow holes 323 being relatively small, the spacing portions 324 on both sides of the insulation body 3 are relatively staggered in the embodiment, so that more flow holes 323 can be arranged on the extension 32, and the insulation material 9 can be quickly filled. Moreover, the thinner part of the insulation material 9 on one side can be restrained by the thicker part of the insulation material 9 on the other side, so that the material strength of the insulation material 9 at each position along the first direction Z can be balanced, and the position with weak material strength of the insulation material 9 can be prevented from being broken due to the swing of the cable assemblies 6. Optionally, the insulation material 9 can be a hot melt adhesive material, which has good fluidity and is beneficial to completely fill the gaps of the first filling space 321 and the second filling space 322.

[0034] Please refer toFigure 6 and Figure 7 Each of the transmission modules comprises a terminal assembly 5 fixed to the insulating body 3 and a cable assembly 6 connected to the terminal assembly 5. The terminal assembly 5 comprises two terminals 51 arranged side by side, an insulating block 52 fixed to the two terminals 51, and a shielding shell 53 surrounding the two terminals 51, the insulating block 52 insulating the two terminals 51 from the shielding shell 53. The cable assembly 6 comprises two wires 61, an insulating layer 62 covering the two wires 61, a shielding layer 63 covering the insulating layer 62, and an insulating outer sleeve 64 covering the shielding layer 63. Each of the two wires 61 of the cable assembly 6 is connected to the two terminals 51 of the corresponding transmission module.

[0035] Please refer to Figures 7-9 For each of the transmission modules, each of the terminals 51 has a contact portion 511, a wiring portion 513, and an intermediate portion 512 connecting the contact portion 511 and the wiring portion 513, the contact portion 511 is used to interface with the conductors of the mating connector, and the wiring portion 513 is used to connect to one of the wires 61 of the corresponding cable assembly 6. The insulating block 52 is provided with an air slot 521 corresponding to the position of the wiring portion 513, and the wiring portions 513 of the two terminals 51 are separated by air. Since the position of the wiring portion 513 overlaps the thickness of the wire 61, the thickness of this position is increased, which reduces the impedance of this position. Compared with being completely covered by the insulating block 52, the embodiment increases the air contact area of the wiring portion 513 through the air slot 521, which can improve the impedance of this position, benefit the consistency of the impedance of the terminals 51, reduce signal reflection caused by the inconsistency of the characteristic impedance of the terminals 51, and reduce signal loss. Further, the terminal 51 further comprises a tail portion 514 extending from the wiring portion 513, the tail portion 514 is fixed to the insulating block 52, and the insulating block 52 is further provided with a separation block 522, the separation block 522 is located between the two tail portions 514 and between the two wires 61 connected to the two terminals 51 of the terminal assembly 5. Thus, the two tail portions 514 are positioned apart from each other and the two wires 61 are positioned apart from each other by the separation block 522, avoiding the mutual contact of the two wires 61; at the same time, it is also convenient to pre-position the wires 61 before connecting the wires 61 and the wiring portions 513, avoiding the connection operation. Optionally, the wires 61 and the wiring portions 513 are connected by welding.

[0036] Please refer to Figure 7 , Figures 9-11The shielding shell 53 comprises a first shielding part 531 arranged outside the wiring part 513 of the two terminals 51, and the first shielding part 531 is provided with an open area 5311 exposing the two wiring parts 513. The conductive connecting piece 8 is electrically connected with the shielding shell 53 of the terminal assembly 5 in the same row, and shields the open area 5311 of the shielding shell 53 in the same row. Each first shielding part 531 and the conductive connecting piece 8 jointly form a shielding space and are arranged outside the two wiring parts 513. During signal transmission, the electromagnetic field around the wiring part 513 is more concentrated compared with the intermediate part 512 because the wiring part 513 is connected with the conductive wire 61, and the interference signal is more easily received. The open area 5311 of the present application facilitates the connection of the conductive wire 61 to the wiring part 513, and the conductive connecting piece 8 shields the open area 5311, which can avoid the transmission of external interference signals to the wiring part 513 through the open area 5311, and the shielding space can more comprehensively shield the interference signal for the wiring part 513. The conductive connecting piece 8 connects the multiple shielding shells 53 in the same row into a whole ground structure, so that the potential of the conductive connecting piece 8 and the multiple shielding shells 53 is equal, which improves the signal crosstalk and increases the current path of the ground, can quickly transmit the received interference signal, and improves the shielding ground efficiency. Compared with the shielding space which is formed by the combination of two separate parts of the first shielding part 531 and then connected with multiple shielding shells 53 by the conductive connecting piece 8, the present application does not need to combine the two separate parts of the first shielding part 531 to form the shielding space, which can make full use of the shielding area of the conductive connecting piece 8 and reduce the material consumption of the shielding shell 53, thereby saving the cost of the electrical connector 100. Further, the shielding shell 53 further comprises the second shielding part 532 integrally connected with the first shielding part 531, the second shielding part 532 comprises four side walls 5321 and is arranged outside the contact part 511 of the two terminals 51, and the conductive connecting piece 8 is limited along the extension direction of the contact part 511 to at least one side wall 5321 of the second shielding part 532. Thus, the first shielding part 531 and the second shielding part 532 can provide shielding for the terminals 51 in a longer range, and compared with the split structure of the first shielding part 531 and the second shielding part 532, the integral connection structure of the first shielding part 531 and the second shielding part 532 in the present embodiment can simplify the assembly steps and avoid unnecessary gaps at the joint position of the split structure, thereby reducing the external interference received by the terminals 51. The conductive connecting piece 8 is limited to the side wall 5321 of the second shielding part 532, which can prevent the relative displacement of the conductive connecting piece 8 and the shielding shell 53 and ensure the mutual contact of the shielding shell 53 and the conductive connecting piece 8.Figure 7 、 Figure 9 and Figure 10 In the embodiment, the insulating block 52 is provided with two first limiting grooves 523, and the shielding shell 53 is provided with two second limiting grooves 5322 corresponding to the positions of the first limiting grooves 523 and exposing the first limiting grooves 523. The conductive sheet 8 is provided with a main body 81 and a plurality of limiting portions 83 extending from the main body 81. The main body 81 shields the open area 5311 of the shielding shell 53 in the same row, and each limiting portion 83 enters the first limiting groove 523 of at least one shielding shell 53 and the second limiting groove 5322 corresponding to the first limiting groove 523. In the embodiment, some limiting portions 83 are located between two shielding shells 53 in the first direction Z. The limiting portions 83 are simultaneously limited in the second limiting grooves 5322 of the two shielding shells 53 and the first limiting grooves 523 corresponding to the two second limiting grooves 5322. Some limiting portions 83 are limited in the second limiting groove 5322 of one shielding shell 53 and the first limiting groove 523 corresponding to the second limiting groove 5322. Thus, the limiting portions 83 can be limited by the first limiting grooves 523 and the second limiting grooves 5322, avoiding the separation between the conductive sheet 8 and the shielding shell 53. Moreover, the second limiting grooves 5322 of the embodiment are arranged between two perpendicular side walls 5321 and at the joint position of the second shielding portion 532 and the open area 5311, which can realize the transition at the joint position through the second limiting grooves 5322, facilitate the bending to form two perpendicular side walls 5321, and avoid the tearing of the two perpendicular side walls 5321 of the second shielding portion 532 at the joint position.

[0037] Please refer to Figure 7 、 Figure 9 and Figure 10Each of the cable assemblies 6 further comprises a grounding ring 7 sleeved and contacting the shielding layer 63 of the corresponding cable assembly 6. The first shielding part 531 extends to contact the grounding ring 7, and the shielding space is surrounded outside the wiring part 513 and outside a part of the grounding ring 7. Thus, the shielding layer 63, the grounding ring 7, the shielding shell 53 and the lead-over 8 are connected into an integral grounding structure, improving the shielding effect and grounding efficiency of the electrical connector 100. The first shielding part 531 extends to the grounding ring 7, so that the first shielding part 531, the grounding ring 7 and the shielding layer 63 form a continuous shielding structure. Even if the wire 61 is exposed, it can also be located in the shielding space, avoiding external interference signals from interfering with the electrical connector 100 through the exposed wire 61. Further, as shown in Figures 9-12 The first shielding part 531 comprises oppositely arranged first and second walls 5312 and 5313, and a third wall 5314 connected between the first and second walls 5312 and 5313, the third wall 5314 being oppositely arranged with the open area 5311, and the first and second walls 5312 and 5313 each being provided with a shielding contact arm 5315, the shielding contact arm 5315 being bent and extended towards the grounding ring 7 to form and contact the grounding ring 7, the third wall 5314 contacting the grounding ring 7, and a part of the lead-over 8 contacting the grounding ring 7. Thus, because the two shielding contact arms 5315 of the first shielding part 531 are bent and extended towards the grounding ring 7, the opening adjacent to one end of the grounding ring 7 of the shielding space can gradually decrease, reducing the probability of external interference signals entering the shielding space through the opening, and reducing crosstalk interference. The contact positions of the grounding ring 7 and the lead-over 8, and the first shielding part 531 are increased, ensuring the communication between the shielding layer 63, the grounding ring 7, the shielding shell 53 and the lead-over 8, and limiting the grounding ring 7 through the two shielding contact arms 5315, the third wall 5314 and the lead-over 8, reducing the swing of the cable assembly 6 and the probability of poor contact between the cable assembly 6 and the terminal assembly 5. As shown in Figure 7 The edge of the shielding contact arm 5315 is connected with the third wall 5314, avoiding the shielding contact arm 5315 from being separated from the third wall 5314 when bent and extended, increasing the gap of the first shielding part 531 and reducing crosstalk. Further, as shown in Figure 11 and Figure 12As shown, the conducting tab 8 further comprises a plurality of abutting portions 82 extending from the main body portion 81 towards the plurality of grounding rings 7 in the same row, and there is an air gap g between the main body portion 81 and the grounding rings 7. The end of each abutting portion 82 extends obliquely and contacts the corresponding grounding ring 7. The middle of the end of the abutting portion 82 is provided with a groove 821, and the maximum width of the groove 821 is smaller than the width of the grounding ring 7. The air gap g provides a certain allowance for the thickness change caused by the thickness parameter adjustment or deformation of the grounding ring 7, which is conducive to selecting grounding rings 7 with different thickness parameters as needed, or avoiding the grounding ring 7 from being deformed to hinder the stable connection of the conducting tab 8 to the insulating body 3. If the abutting portion 82 extends vertically from the main body portion 81, and the groove 821 spans the entire width of the grounding ring 7, the material of the abutting portion 82 on both sides of the groove 821 will occupy a larger space, which will cause the width of the abutting portion 82 plus the width of the grounding ring 7 to be larger, and when there is an error in the size of the groove 821 or the grounding ring 7, the abutting portion 82 and the grounding ring 7 are likely to be in poor contact. In the embodiment, the end of the abutting portion 82 extends obliquely, which can flexibly adjust the oblique angle through the acting force between the grounding ring 7 and the abutting portion 82, ensure that the grounding ring 7 and the abutting portion 82 are in contact, and the width of the groove 821 is smaller than the width of the grounding ring 7, so that the groove 821 only allows part of the grounding ring 7, and the material of the abutting portion 82 on both sides of the groove 821 and the grounding ring 7 will overlap in width, which can reduce the size of the electrical connector 100 in the width direction of the grounding ring 7. And the grounding ring 7 extends obliquely and contacts the grounding ring 7, and the opening of the grounding ring 7 adjacent to the shielding space will be further reduced, reducing the gap between the shielding space and the outside world, reducing the probability of external interference signals entering the shielding space through the opening, and reducing crosstalk. It should be noted that in the embodiment, the grounding ring 7 and the conducting tab 8 contact along the second direction X, so the size of the grounding ring 7 along the second direction X is the thickness of the grounding ring 7. It should be noted that in the embodiment, the two terminals 51 of the terminal assembly 5 are arranged side by side along the first direction Z, so the size of the grounding ring 7 along the first direction Z is the width of the grounding ring 7.

[0038] It should be noted that the plurality of transmission modules of the electrical module 2 can also be arranged into only one row or more than two rows, and the application does not limit the plurality of transmission modules to be arranged into the first row and the second row as described in the embodiment, and the electrical module 2 can also include one or more than two conductive tabs 8. In other embodiments, the number of side walls 5321 of the second shielding part 532 can also be other numbers, for example, only two or three side walls 5321, and one or more side walls 5321 of the second shielding part 532 can also be provided with openings according to actual needs, which are not limited herein. The insulating layer 62 of the cable assembly 6 can be formed by one or more than two related materials. The two terminals 51 of the terminal assembly 5 can be arranged side by side along the first direction Z or the second direction X, which is not limited herein. It should be noted that the two terminals 51 in each terminal assembly 5 of the electrical connector 100 form a terminal pair 51, and a part of the plurality of terminal pairs 51 can transmit power signals, and a part of the plurality of terminal pairs 51 can be used as a differential pair to transmit differential signals. The specific position arrangement of the terminal pairs 51 with different signal configurations can be set according to actual needs.

[0039] In summary, the electrical connector 100 provided by the application has the following beneficial effects:

[0040] 1. The application can avoid external interference signals from being transmitted to the wiring part 513 through the open area 5311, and the shielding space can more comprehensively shield the interference signals for the wiring part 513. The conductive tab 8 is connected with the plurality of shielding shells 53 in the same row to form a whole grounding structure, so that the potential of the conductive tab 8 and the plurality of shielding shells 53 is equal, the signal crosstalk is improved, the current path of grounding is increased, the received interference signals can be quickly transmitted out, and the shielding grounding efficiency is improved.

[0041] 2. The air slot 521 can increase the air contact area of the wiring part 513, improve the impedance at this position, make the impedance of the terminal 51 consistent, reduce signal reflection caused by inconsistent characteristic impedance of the terminal 51, and reduce signal loss.

[0042] 3. The integrated connection structure of the first shielding part 531 and the second shielding part 532 in the embodiment can simplify the assembly steps, avoid unnecessary gaps at the positions where the split structure is connected with each other, and reduce the external interference received by the terminal 51. The conductive tab 8 is limited in the side wall 5321 of the second shielding part 532, which can prevent the relative displacement of the conductive tab 8 and the shielding shell 53, and ensure that the shielding shell 53 and the conductive tab 8 are in contact with each other.

[0043] 4. The first shielding portion 531 extends to the ground ring 7, so that the first shielding portion 531, the ground ring 7 and the shielding layer 63 form a continuous shielding structure. Even if the wire 61 exposed to the outside, it is located in the shielding space, avoiding outside interference signals through the exposed wire 61 to interfere with the electrical connector 100.

[0044] The above detailed description is only a description of the preferred embodiments of the present application, not a limitation of the patent scope of the present application, so any equivalent technical changes made according to the content of the present application and drawings are included in the patent scope of the present application.

Claims

1. An electrical connector, characterized by, The electric module comprises: an insulating body; a plurality of transmission modules arranged in at least one row along a first direction, each of the transmission modules comprising a terminal assembly fixed to the insulating body and a cable assembly connected to the terminal assembly, each of the terminal assemblies comprising two terminals arranged side by side and a shielding shell surrounding the two terminals, the shielding shell being electrically isolated from the two terminals, each of the terminals having a contact portion for being connected to a mating connector, a wire connecting portion for being connected to a wire of the corresponding cable assembly, and an intermediate portion connecting the contact portion and the wire connecting portion, a first shielding portion of the shielding shell being arranged outside the wire connecting portions of the two terminals, and the first shielding portion being provided with an open area exposing the two wire connecting portions; a conductive tab fixed to the insulating body and electrically connected to the shielding shells of the terminal assemblies in the same row, the conductive tab shielding the open area of the shielding shells in the same row, each of the first shielding portions and the conductive tab forming a shielding space together, the cable assembly comprising an insulating layer covering the wire and a shielding layer covering outside of the insulating layer, the shielding space being arranged outside the two wire connecting portions and a part of the shielding layer, and a part of the conductive tab being electrically connected to the shielding layer.

2. The electrical connector of claim 1, wherein, Each of the terminal assemblies further comprises an insulating block fixed to the two terminals, the insulating block insulating the two terminals from the shielding shell, and the insulating block being provided with an air slot at a position of the wire connecting portions, the wire connecting portions of the two terminals being separated by air.

3. The electrical connector of claim 2, wherein, Each of the terminals further comprises a tail portion extending from the wire connecting portion, and the insulating block is further provided with an isolation block located between the two tail portions of the terminal assembly and between the two wires connected to the two terminals of the terminal assembly.

4. The electrical connector of claim 1, wherein, Each of the cable assemblies comprises two wires, and each of the cable assemblies further comprises a grounding ring sleeved and in contact with the shielding layer of the cable assembly. The first shielding portion extends to be in contact with the grounding ring, and the shielding space is arranged outside the wire connecting portions and a part of the grounding ring.

5. The electrical connector of claim 4, wherein, The first shielding portion comprises a first wall and a second wall arranged oppositely, and a third wall connected between the first wall and the second wall, the third wall being arranged opposite to the open area, the first wall and the second wall are both bent to extend towards the grounding ring to form shielding contact arms for being in contact with the grounding ring, edges of the shielding contact arms being connected to the third wall, the third wall being in contact with the grounding ring, and a part of the conductive tab being in contact with the grounding ring.

6. The electrical connector of claim 5, wherein, The conductive tab has a main body portion and a plurality of abutting portions extending from the main body portion towards the ground rings of the same row, the main body portion shields the open area of the shielding shell of the same row, and an air gap exists between the main body portion and the ground rings, the end of each abutting portion is obliquely extended and in contact with the corresponding ground ring, the middle of the end of the abutting portion is provided with a groove, and the maximum width of the groove is smaller than the width of the ground ring.

7. The electrical connector of claim 1, wherein, The shielding shell further comprises a second shielding portion integrally connected with the first shielding portion, the second shielding portion comprises four side walls and is arranged outside the contact portions of the two terminals, and the conductive tab is limited along the extension direction of the contact portions by at least one side wall of the second shielding portion.

8. The electrical connector of claim 1, wherein, The plurality of transmission modules comprises a plurality of first transmission modules arranged in a first row along the first direction and a plurality of second transmission modules arranged in a second row along the first direction, and the first row and the second row are parallel along a second direction perpendicular to the first direction; The insulating body is provided with an extension portion for fixing the cable assemblies, the extension portion is provided with a first filling space at the position of the cable assembly corresponding to the first transmission module, the extension portion is provided with a second filling space at the position of the cable assembly corresponding to the second transmission module, and the extension portion is further provided with at least one flow hole communicating the first filling space and the second filling space; The electrical module further comprises an insulating material integrally formed and filled in the first filling space, the flow hole and the second filling space, and the insulating material and the extension portion jointly fix the cable assemblies of the first row and the second row.

9. The electrical connector of claim 8, wherein, The first filling space comprises a plurality of first grooves for accommodating the plurality of cable assemblies of the first row, and the second filling space comprises a plurality of second grooves for accommodating the plurality of cable assemblies of the second row, and the extension portion is provided with a spacing portion between adjacent two first grooves and between adjacent two second grooves; The projections of the first grooves and the second grooves along the second direction are staggered, and the flow hole is located in the spacing portion and penetrates through the spacing portion.

10. The electrical connector of claim 1, wherein, Each terminal further comprises an insulating block for fixing two terminals, the insulating block is located in the shielding shell and insulates and separates the two terminals from the shielding shell, the insulating block is provided with at least one first limiting groove, the shielding shell is provided with at least one second limiting groove, the second limiting groove corresponds to the position of the corresponding first limiting groove and exposes the corresponding first limiting groove; The conductive tab is provided with a main body portion and a plurality of limiting portions extending from the main body portion, the main body portion shields the open area of the shielding shell of the same row, and each limiting portion enters the first limiting groove of at least one shielding shell and the second limiting groove corresponding to the first limiting groove.

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