Electrical Connector and Electrical Connection Assembly

Abstract

Embodiments of the present invention relate to the technical field of communication connection, and disclose an electrical connector and an electrical connection assembly. The electrical connector includes: an insulating body; a shielding plate fixed to the insulating body; a shielding cover fixed to the shielding plate and enclosing a first shielding space with the shielding plate; and signal terminals fixed to the insulating body, at least part of the signal terminals being received in the first shielding space. The shielding space of the present electrical connector can be used to at least partly receive the above-mentioned signal terminals, so as to at least partly shield the electromagnetic signals inside from escaping and interfering with adjacent signal terminals, or to at least partly shield external electromagnetic signals from entering the first shielding space and interfering with the signal terminals at least partly received in this shielding space. Therefore, the electrical connector provided by the embodiments of the present invention can effectively reduce the interference degree of the electromagnetic signals generated by the signal terminals on the normal signal transmission of other adjacent signal terminals.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of communication connection, and in particular, to an electrical connector and an electrical connection assembly.

Background Art

[0002] Electrical connectors are widely used in various electronic devices to achieve electrical connection with external mating connectors, and then to transmit audio, video or other data signals. Generally, an electrical connector includes an insulating body formed by injection molding, and terminals mounted on the insulating body.

[0003] Among them, some terminals in the electrical connector are used for signal transmission, that is, signal terminals; however, the inventors of the present invention found in the process of implementing the present invention that: since the electronic devices on the market are getting smaller and their data processing speed is getting faster, the electrical connectors therein must transmit more signals in a smaller space without reducing the signal quality, and the structural design of the signal terminals is getting closer to each other; however, due to the small distance between the signal terminals and the high signal transmission speed, the electromagnetic signals generated by the signal terminals will interfere with the signal terminals close to them, thus affecting the normal transmission of signals of adjacent signal terminals.

Summary of the Invention

[0004] Embodiments of the present invention aim to provide an electrical connector and an electrical connection assembly to reduce the interference degree of electromagnetic signals generated by signal terminals on the normal signal transmission of adjacent other signal terminals.

[0005] Embodiments of the present invention solve its technical problems by adopting the following technical solutions:

[0006] An electrical connector, comprising:

[0007] An insulating body;

[0008] A shielding plate fixed to the insulating body;

[0009] A shielding cover fixed to the shielding plate and enclosing a first shielding space with the shielding plate; and

[0010] Signal terminals fixed to the insulating body, at least part of the signal terminals being received in the first shielding space.

[0011] As a further improvement of the above technical solution, the shielding cover includes a top wall and side walls fixed to opposite sides of the top wall, and one end of the side wall away from the top wall is fixed to the shielding plate.

[0012] As a further improvement of the above technical solution, the shielding cover further includes a sealing end plate, one end of the sealing end plate is connected to the end of the top wall, and the other end of the sealing end plate extends in a direction away from the shielding plate;

[0013] Along the direction in which the electrical connector is adapted to an external electrical connection device, the sealing end plate is located between the two ends of the shielding plate, and the sealing end plate is used to jointly enclose a second shielding space with the shielding plate and a shielding cover on the electrical connection device when the electrical connector is adapted to the external electrical connection device.

[0014] As a further improvement of the above technical solution, the shielding cover further includes a sealing side plate, the sealing side plate is arranged at one end of the side wall close to the sealing end plate, one end of the sealing side plate is connected to one of the side walls, and the other end of the sealing side plate extends in a direction parallel to the side wall and away from the side wall.

[0015] As a further improvement of the above technical solution, the number of the shielding covers is two or more, and the two or more shielding covers are arranged in parallel.

[0016] As a further improvement of the above technical solution, the shielding plate includes a substrate, strip-shaped protrusions and convex bumps;

[0017] The substrate and the top wall are respectively arranged on both sides of the signal terminal;

[0018] The number of the strip-shaped protrusions is two or more, the two or more strip-shaped protrusions are arranged in parallel and fixed to one end of the substrate close to the top wall, and the two side walls of the shielding cover are respectively fixedly connected to two adjacent strip-shaped protrusions;

[0019] The convex bump is arranged at one end of the strip-shaped protrusion, and the position of the convex bump corresponds to the meshing area of the signal terminal. The convex bump is used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the convex bump, so as to reduce the interference of the electromagnetic signal to the signal terminal arranged on the other side of the convex bump.

[0020] As a further improvement of the above technical solution, from the end close to the strip-shaped protrusion to the end away from the strip-shaped protrusion, the distance between the end of the convex bump away from the substrate and the substrate gradually increases.

[0021] As a further improvement of the above technical solution, it further includes a grounding terminal. The grounding terminal includes a fixed section, a connecting section, and a bending section. The fixed section extends along a direction parallel to the strip-shaped protrusion and is fixed between the strip-shaped protrusion and the side wall. One end of the connecting section is connected to one end of the fixed section close to the convex hull, the other end of the connecting section extends away from the substrate, one end of the bending section is connected to the other end of the connecting section away from the fixed section, the other end of the bending section extends towards the substrate, and there is an arc transition between the bending section and the connecting section.

[0022] As a further improvement of the above technical solution, the shielding plate further includes an elastic piece. The elastic piece includes a connecting portion and a bending portion;

[0023] The connecting portion is obliquely connected to the substrate and is located on the side of the convex hull away from the strip-shaped protrusion. One end of the connecting portion is connected to the substrate, and the other end of the connecting portion extends obliquely towards the convex hull;

[0024] One end of the bending portion is connected to the other end of the connecting portion away from the substrate, the other end of the bending portion extends towards the substrate, and there is an arc transition between the bending portion and the connecting portion;

[0025] The elastic piece is used to carry the terminal when the meshing area of the grounding terminal moves towards the substrate.

[0026] As a further improvement of the above technical solution, the shielding plate further includes a baffle. One end of the baffle is connected to the elastic piece, and the other end of the baffle extends towards the convex hull.

[0027] As a further improvement of the above technical solution, the substrate is provided with a through groove corresponding to the baffle. The through groove is used to allow at least part of the baffle to enter the through groove when the elastic piece swings towards the substrate.

[0028] The embodiments of the present invention also adopt the following technical solutions to solve its technical problems:

[0029] An electrical connection assembly includes the above electrical connector and an electrical connection device adapted to the electrical connector. The electrical connection device includes:

[0030] An insulating substrate;

[0031] Communication terminals fixed to the insulating substrate, and the communication terminals are used to match with the signal terminals on the electrical connector; and

[0032] The shielding cover is fixed to the insulating base body and is disposed on one side of the communication terminal. When the electrical connection device is mated with the electrical connector, the shielding cover and the sealing end plate are located on the same side of the shielding plate, and the shielding cover, the sealing end plate and the shielding plate enclose the second shielding space.

[0033] The beneficial effects of the present invention are as follows:

[0034] Compared with other electrical connectors on the current market, the electrical connector provided by the embodiment of the present invention includes an insulating body, a shielding plate, a shielding cover and signal terminals. Among them, the shielding cover is fixed to the shielding plate and encloses a first shielding space with the shielding plate. The first shielding space can be used to at least partially accommodate the above-mentioned signal terminals, so as to at least partially shield the electromagnetic signals inside from escaping and interfering with adjacent signal terminals, or to at least partially shield external electromagnetic signals from entering the first shielding space and interfering with at least part of the signal terminals accommodated in the shielding space. Therefore, the electrical connector provided by the embodiment of the present invention can effectively reduce the interference degree of the electromagnetic signals generated by the signal terminals on the normal signal transmission of adjacent other signal terminals.

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a scale limitation.

[0036] Figure 1 It is a three-dimensional schematic diagram of an electrical connection assembly provided by one embodiment of the present invention;

[0037] Figure 2 For Figure 1 the exploded schematic diagram of the electrical connection assembly in

[0038] Figure 3 For Figure 1 the three-dimensional sectional schematic diagram of the electrical connection assembly in

[0039] Figure 4 For Figure 1 the sectional schematic diagram of the electrical connection assembly in the exploded state in

[0040] Figure 5 For Figure 1 the exploded schematic diagram of the electrical connector in

[0041] Figure 6 For Figure 5 the three-dimensional schematic diagram of the shielding plate in one direction in

[0042] Figure 7 For Figure 5 the three-dimensional schematic diagram of the shielding plate in another direction in

[0043] Figure 8 is Figure 6 The partial enlarged schematic diagram at position C in

[0044] Figure 9 is Figure 7 The partial enlarged schematic diagram at position D in

[0045] Figure 10 is Figure 4 The partial enlarged schematic diagram at position B in

[0046] Figure 11 is Figure 10 The three-dimensional schematic diagram of the grounding terminal in

[0047] Figure 12 is Figure 5 The three-dimensional schematic diagram of the shielding cover in one direction in

[0048] Figure 13 is Figure 5 The three-dimensional schematic diagram of the shielding cover in another direction in

[0049] Figure 14 is Figure 1 The exploded schematic diagram of the electrical connection device in

[0050] Figure 15 is Figure 14 The three-dimensional schematic diagram of the differential communication terminal pair in

[0051] Figure 16 is Figure 14 The three-dimensional schematic diagram of the communication module in one direction in

[0052] Figure 17 is Figure 14 The three-dimensional schematic diagram of the communication module in another direction in

[0053] Figure 18 is Figure 16 The exploded schematic diagram of the communication module in

[0054] Figure 19 is Figure 17 The exploded schematic diagram of the communication module in

[0055] Figure 20 is Figure 3 The partial enlarged schematic diagram at position A in

Specific embodiments

[0056] For ease of understanding the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" / "secured to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected" to another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are for illustrative purposes only.

[0057] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0058] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] In this specification, the term "installation" includes fixing or restricting a certain element or device to a specific position or place by means such as welding, screwing, clamping, bonding, etc. The element or device can remain stationary at the specific position or place or can move within a limited range. After the element or device is fixed or restricted to a specific position or place, it can be disassembled or cannot be disassembled, which is not limited in the embodiments of the present invention.

[0060] Please refer to Figures 1 to 4, which respectively show a three-dimensional schematic diagram, an exploded schematic diagram, a three-dimensional sectional schematic diagram, and a sectional schematic diagram in an exploded state of an electrical connection component provided by one embodiment of the present invention. The electrical connection component includes an electrical connector 100 and an electrical connection device 200. Among them, the electrical connector 100 is in the shape of a male head, including an insulating body 110, and differential signal terminal pairs fixedly arranged on the insulating body 110 and protruding outward at both ends; the electrical connection device 200 is in the shape of a female head, including an insulating base 210 and differential communication terminal pairs fixedly arranged on the insulating base 210. The insulating base 210 is provided with a receiving cavity for receiving the differential communication terminals. When the electrical connector 100 is mated with the electrical connection device 200, the two electrical connection devices 200 are respectively arranged on both sides of the insulating body 110 along the extending direction of the differential signal terminals, and the differential signal terminals are inserted into the above-mentioned receiving cavity and elastically abutted against the differential communication terminals to achieve electrical connection, so that signals can be transmitted from one electrical connection device 200 through the electrical connector 100 to the other electrical connection device 200. It can be understood that in other embodiments of the present invention, the electrical connector 100 can also be connected to only one electrical connection device 200.

[0061] For ease of understanding, the electrical connector 100 will be specifically described below.

[0062] For the above-mentioned electrical connector 100, please refer to Figure 5 , which shows an exploded schematic diagram of the electrical connector 100. Please also refer to Figures 1 to 4 , the electrical connector 100 includes an insulating body 110 and a signal module 120. Among them, the insulating body 110 is integrally in the shape of a cuboid, and it is provided with two or more signal module receiving cavities 111 arranged in parallel along the illustrated height direction. The signal module receiving cavity 111 penetrates the insulating body 110 as a whole along the illustrated horizontal direction. The signal module 120 is fixedly connected to the insulating body 110 in a detachable manner and is received in the signal module receiving cavity 111. For ease of reading, only a pair of signal modules 120 are shown in the drawings. The pair of signal modules 120 are symmetrically arranged along the illustrated height direction and are received in the same signal module receiving cavity 111; it can be understood that the electrical connector 100 can include two or more pairs of signal modules 120, and each pair of signal modules 120 are respectively received in different signal module receiving cavities 111 in the above form.

[0063] Regarding the signal module 120, each signal module 120 includes a shielding plate 130, two or more groups of differential signal terminal pairs 140, and two or more shielding covers 150 arranged in sequence from the center of the signal module receiving cavity 111 in the height direction away from the center. The shielding plate 130, the differential signal terminal pairs 140, and the shielding covers 150 will be described below in sequence.

[0064] Regarding the shielding plate 130, please refer to Figures 6 to 9, which respectively show the three-dimensional schematic diagrams of the shielding plate 130 in two directions, and the partial enlarged schematic diagrams at positions C and D. Please also refer to Figures 1 to 6 , the shielding plate 130 includes a substrate 131, and more than two convex protrusions 132 and more than two strip-shaped protrusions 133 provided on the substrate 131. The substrate 131 is a flat plate-like structure as a whole, and an installation surface 1311 is provided at one end thereof facing away from the center of the signal module receiving cavity 111. The above-mentioned convex protrusions 132 and strip-shaped protrusions 133 are all provided on the installation surface 1311.

[0065] The above-mentioned more than two strip-shaped protrusions 133 are arranged in parallel on the installation surface 1311. Both ends of each strip-shaped protrusion 133 are connected to the above-mentioned convex protrusions 132. The convex protrusions 132 extend from one end close to the strip-shaped protrusions 133 to the end away from the strip-shaped protrusions 133, and the distance between the end of the convex protrusion 132 away from the substrate 131 and the substrate 131 gradually increases. The differential signal terminal pair 140 is arranged between two adjacent strip-shaped protrusions 133, and the meshing area of the differential signal terminal pair 140 corresponds to the position of the convex protrusion 132. When the differential signal terminal pair 140 meshes with the differential communication terminal pair of the electrical connection device 200, at least part of the meshing area of the differential signal terminal pair 140 is lower than the end of the convex protrusion 132 away from the substrate 131. Then, the convex protrusion 132 can at least partially shield the electromagnetic signal generated when the differential signal terminal pair 140 on one side thereof works, so as to reduce the interference of the electromagnetic signal on the differential signal terminal pair 140 on the other side of the convex protrusion 132.

[0066] To enhance the shielding function of the shielding plate 130, the electrical connector 100 further includes a ground terminal. For details, please refer to Figure 10 and Figure 11, which respectively show a partial enlarged schematic view at B and a three-dimensional schematic view of the ground terminal. Please also refer to the other attached drawings. The ground terminal 141 extends parallel to the extending direction of the strip-shaped protrusion 133 as a whole and is fixed to one end of the strip-shaped protrusion 133 away from the substrate 131. The ground terminal 141 is electrically connected to the shielding plate 130 to ground the shielding plate 130 when the electrical connector 100 is mated with the electrical connection device 200. The ground terminal 141 is in an overall flat long plate-like structure, which includes a fixed section 142, a connecting section 143, and a bending section 144. Each end of the fixed section 142 is sequentially connected with the above-mentioned connecting section 143 and bending section 144; wherein, the fixed section 142 extends along a direction parallel to the strip-shaped protrusion 133 and is fixed to one end of the strip-shaped protrusion 133 away from the substrate 131. One end of the connecting section 143 is connected to one end of the fixed section 142 close to the convex hull 132. The other end of the connecting section 143 extends obliquely away from the substrate 131. One end of the bending section 144 is connected to the other end of the connecting section 143 away from the fixed section 142. The other end of the bending section 144 extends in the direction close to the substrate 131. The connecting section 143 and the bending section 144 together form an engagement area of the ground terminal, and the junction of the two is used to abut against the corresponding ground terminal on the electrical connection device 200. When the ground terminal 141 abuts against the corresponding ground terminal on the electrical connection device 200, it will passively move elastically towards the center of the signal module receiving cavity 111. Therefore, the connecting section 143 at least partially extends to the side of the convex hull 132 away from the strip-shaped protrusion 133. Preferably, there is a certain gap between the connecting section 143 and one end of the convex hull 132 away from the mounting surface. The shape of one end of the convex hull 132 away from the substrate 131 is used to adapt to the shape of the ground terminal 141 on the one hand, and on the other hand, it can also ensure that the distance between the differential signal terminal pair 140 relative to the substrate 131 after engagement is less than the distance between the convex hull 132 and the substrate 131 at this end.

[0067] Further, to prevent the engagement area of the ground terminal 141 from being plastically deformed due to long-term forced elastic bending towards the center of the signal module receiving cavity 111 when engaging with the corresponding ground terminal on the electrical connection device 200, the shielding plate 130 further includes a spring piece 134. Along the direction perpendicular to the substrate 131, the spring piece 134 is located between the substrate 131 and the engagement area of the ground terminal 141. Specifically refer to Figure 8 And Figure 9and in combination with other attached drawings, the elastic piece 134 is arranged on the above-mentioned mounting surface 1311 and is located on the side of the convex hull 132 away from the strip-shaped protrusion 133, and the elastic pieces 134 correspond to the convex hulls 132 one by one. Specifically, the elastic piece 134 is elastically connected to the substrate 131, and it includes a connecting portion 1341 and a bending portion 1342. The connecting portion 1341 is obliquely connected to the substrate 131 and is located at one end of the convex hull 132 away from the strip-shaped protrusion 133. One end of the connecting portion 1341 is connected to the substrate 131, and the other end of the connecting portion 1341 extends obliquely in the direction close to the convex hull 132, that is: along the direction away from the convex hull 132, the distance between the connecting portion 1341 and the substrate 131 gradually becomes smaller; one end of the bending portion 1342 is connected to the end of the connecting portion away from the substrate 131, and the other end of the bending portion 1342 extends in the direction close to the substrate 131. In this embodiment, the connecting portion 1341 is elastically connected to the end of the substrate 131, and the whole elastic piece 134 can elastically swing with the end of the connecting portion 1341 away from the bending portion 1342 as the center. The junction of the bending portion 1342 and the connecting portion 1341 is used to carry the meshing area of the grounding terminal 141. When the grounding terminal 141 is meshed, it moves in the direction close to the substrate 131 against the elastic force of the elastic piece 134. When the grounding terminal 141 is disengaged from the meshing, it is reset under the elastic action of the elastic piece 134. Preferably, there is an arc transition between the connecting section 143 and the bending section 144 of the grounding terminal 141 and a first abutting portion is formed at the transition position, and there is an arc transition between the connecting portion 1341 and the bending portion 1342 of the elastic piece 134 and a second abutting portion is formed at the transition position; the grounding terminal 141 and the elastic piece 134 are attached to each other through the first abutting portion and the second abutting portion. On the one hand, it can reduce the damage of the elastic piece 134 to the grounding terminal 141 during the assembly and use process. On the other hand, the arc overlap of the first abutting portion and the second abutting portion is also beneficial to reducing the signal crosstalk between adjacent differential signal terminals.

[0068] Further, in this embodiment, the shape of each differential signal terminal in the differential signal terminal pair 140 is substantially the same as that of the ground terminal, and the mounting distance of the differential signal terminal pair 140 and the ground terminal 141 relative to the substrate 131 is substantially the same. The two ends of the differential signal terminal extend to the edge of the substrate 131 along the direction parallel to the strip-shaped protrusion 133, that is, between the convex hull 132 and the end of the elastic piece away from the convex hull 132. Even if the convex hull can play a certain shielding role for the differential signal terminal pair 140, in the area between the convex hull 132 and the end of the elastic piece away from the convex hull 132, the signal generated by the differential signal terminal pair 140 can still propagate to the adjacent differential signal terminal pair 140 and affect the normal transmission of its signal. To overcome this defect, the shielding plate 130 further includes a baffle 135. Specifically, the baffle 135 is integrally in a plate-like structure. One end of the baffle 135 is connected to the elastic piece 134, and the other end extends to the edge of the convex hull 132. The baffle 135 and the above convex hull 132 together isolate the meshing area of the differential signal terminal pairs 140 provided on both sides of the above structure, which can greatly reduce the interference of the signal generated by the differential signal terminal pair 140 on one side of the baffle 135 and the convex hull 132 to the differential signal terminal pair 140 on the other side.

[0069] Still further, to prevent the elastic piece 134 from swinging in the direction close to the substrate 131 along with the ground terminal 141 when the electrical connector 100 is engaged with the electrical connection device 200, while the baffle 135 abuts against the substrate 131 and interferes, a through groove 1312 is provided on the substrate 131 of the shielding plate 130 corresponding to the baffle 135. When the elastic piece 134 moves close to the substrate 131, the baffle 135 can at least partially enter the through groove 1312. In this embodiment, the length of the through groove 1312 along the extending direction of the strip-shaped protrusion 133 is slightly smaller than the length of the baffle 135 in this direction. During the entire process of the baffle 135 approaching the substrate 131, the end of the baffle 135 close to the convex hull 132 enters the through groove 1312, and there is always a gap between the end of the baffle 135 away from the convex hull 132 and the substrate 131. Then the baffle 135 will never contact the substrate 131 to cause interference. It can be understood that in other embodiments of the present invention, the length of the through groove 1312 in the above direction may also be greater than or equal to the length of the baffle 135 in this direction, and the present invention does not make specific limitations in this regard. The setting of the through groove 1312 can make the dimension of the baffle 135 in the direction perpendicular to the substrate 131 as long as possible, reduce the possibility of electromagnetic signals escaping from the gap between the baffle 135 and the substrate 131, and thus achieve a better shielding effect. It can be understood that even in this embodiment, the baffle 135 is fixedly connected to the elastic piece 134, but in other embodiments of the present invention, the baffle 135 can also be directly fixed on the substrate 131. At this time, the above through groove 1312 does not need to be provided.

[0070] Regarding the differential signal terminal pair 140, its shape is substantially the same as that of the above-mentioned ground terminal 141. The signal module 120 includes two or more groups of differential signal terminal pairs 140. The two or more groups of differential signal terminal pairs 140 are arranged in parallel along the direction in which each strip-shaped protrusion 133 is arranged, and each pair of differential signal terminal pairs 140 is respectively disposed between two adjacent ground terminals 141. To ensure the consistency of the biting force when the ground terminal 141 and the differential signal terminal are engaged with the corresponding terminals on the electrical connection device, the distances of the differential signal terminal pair 140 and the ground terminal 141 relative to the substrate 131 are the same. It should be noted that the differential signal terminal pair 140 is insulated from the shielding plate 130.

[0071] Furthermore, to facilitate the assembly of the above-mentioned differential signal terminal pairs 140 and the ground terminals 141 and at the same time achieve the insulation treatment between the two, the signal module 120 in this embodiment further includes an insulating base frame 160, which is formed by injection molding. Specifically, in this embodiment, each differential signal terminal pair 140 and the ground terminal 141 are placed in an injection mold as inserts and the insulating base frame 160 is formed. Among them, at least part of the ground terminal 141 is exposed so as to be fixed to the strip-shaped protrusion of the shielding plate 130 by welding or the like. It should be noted that after welding, the differential signal terminal pair 140 and the shielding plate 130 are filled with plastic to achieve the insulation treatment between the two. The insulating base frame 160 can be inserted into the signal module receiving cavity 111 and can be fixedly connected to the insulating body 110 by a detachable connection method such as snap connection. The signal module 120 and the insulating body 110 are fixedly connected in a detachable connection manner, which is convenient for the user to assemble an appropriate number of signal modules 120 according to actual needs.

[0072] Regarding the shielding cover 150, please refer to Figure 12 and Figure 13 , which respectively show the three-dimensional schematic diagrams of the shielding cover 150 in two directions. Please also refer to Figures 1 to 11, the shielding cover 150 includes a plate-shaped top wall 151 and side walls 152 fixedly connected to opposite sides of the top wall 151. A structure with a U-shaped cross-section is formed between the top wall 151 and the two side walls 152. The shielding cover 150 is disposed opposite to the shielding plate 130 and is located on the side of the shielding plate 130 where the mounting surface 1311 is provided. The U-shaped groove of the shielding cover 150 faces the above-mentioned mounting surface 1311. In this embodiment, the number of shielding covers 150 corresponds to the number of differential signal terminal pairs 140, and its length is substantially equivalent to that of the strip-shaped protrusion 133. Each shielding cover 150 extends along a direction parallel to the strip-shaped protrusion 133, and its two side walls are respectively fixed to two adjacent grounding terminals 141. Each shielding cover 150, together with the corresponding strip-shaped protrusion 133 and the substrate 131, encloses a first shielding space that at least partially houses the outer periphery of the differential signal terminal pair 140, preventing the electromagnetic signals emitted by the differential signal terminal pair 140 from escaping to the adjacent differential signal terminal pair 140, and / or preventing external electromagnetic signals from entering this shielding space and interfering with the differential signal terminal pair within this first shielding space, thereby further enhancing the shielding effect and reducing signal crosstalk.

[0073] The shielding cover 150 further includes two relatively arranged sealing end plates 153. Along the length direction of the shielding cover 150 (i.e., the extending direction of the strip-shaped protrusion mentioned above), the two sealing end plates 153 are respectively disposed at both ends of the top wall 151 and are located between the two ends of the shielding plate 130. One end of the sealing end plate 153 is connected to the top wall 151, and the other end extends in a direction away from the side wall 152 to be away from the shielding plate 130. The sealing end plate 153 is used to jointly enclose a relatively sealed second shielding space that partially wraps the meshing area of the differential signal terminal pair 140 with the shielding plate 130 and the shielding cover on the electrical connection device 200 when the electrical connector 100 is mated with the electrical connection device 200, so as to reduce the amount of external electromagnetic signals entering and / or the amount of internal electromagnetic signals escaping from the electrical connection assembly.

[0074] Further, to improve the shielding effect of the above-mentioned second shielding space, the shielding cover 150 further includes two sealing side plates 154. Along the extending direction of the side wall 152, the two sealing side plates 154 are respectively located at both ends of the side wall 152, and each side wall is connected to one of the sealing side plates 154. One end of the sealing side plate 154 is connected to the side wall 152, and the other end extends away from the side wall 152 along a direction parallel to the extending direction of the side wall 152. The end of the sealing side plate 154 away from the top wall 151 extends obliquely and has substantially the same oblique direction as that of the convex hull 132 to avoid interference with the grounding terminal 141. The sealing side plates 154 on adjacent shielding covers 150, the sealing end plate 153 between the two sealing side plates 154, the convex hulls 132, the baffles 135, the substrate 131 corresponding to the two sealing side plates 154, and the shielding cover on the above-mentioned electrical connection device 200 together enclose a substantially sealed second shielding space, which can greatly reduce the electromagnetic signals emitted by the differential signal terminal pair 140 from its meshing area to adjacent differential signal terminal pairs 140; at the same time, combined with the above-mentioned first shielding space, it can be seen that the shielding cover 150, the shielding plate 130 and the above-mentioned shielding cover cooperate with each other to form a good shielding environment, and the overall shielding performance is excellent.

[0075] Next, a detailed description of the electrical connection device 200 will be given.

[0076] For the above-mentioned electrical connection device 200, please refer to Figures 14 to 19 , which respectively show the exploded schematic diagram of the electrical connection device 200, the three-dimensional schematic diagram of the differential communication terminal pair, the three-dimensional schematic diagrams of the communication module in two directions, and the exploded schematic diagrams of the communication module in two directions. Please also refer to Figures 1 to 13 , the electrical connection device 200 includes an insulating base 210 and a communication module 220. Among them, the insulating base 210 is integrally in a cuboid shape, and it is provided with two or more communication module receiving cavities 211 arranged in parallel along the illustrated height direction. The communication module receiving cavity 211 extends through the insulating body 110 as a whole along the illustrated horizontal direction. The communication module receiving cavity 211 corresponds to the above-mentioned signal module receiving cavity 111 one by one. The communication module 220 is detachably fixed to the insulating base 210 and received in the signal module receiving cavity 111. Similar to the above-mentioned signal module 120, for the convenience of reading, only a pair of communication modules 220 are shown in the drawings. The pair of communication modules 220 are symmetrically arranged along the illustrated height direction and received in the same communication module receiving cavity 211; it can be understood that the electrical connection device 200 may include two or more pairs of communication modules 220, and each pair of communication modules 220 are respectively received in different communication module receiving cavities 211 in the above-mentioned form.

[0077] Regarding the communication module 220, each communication module 220 includes a shielding sheet 230, more than two pairs of differential communication terminals 240, a grounding terminal 245 spaced from the differential communication terminal pairs 240, and a shielding cover 250, which are arranged in sequence along the height direction from the center of the communication module receiving cavity 211 towards a direction away from the center. Among them, each pair of differential communication terminals 240 and the grounding terminal 245 are arranged in parallel at intervals and are integrally provided through an insulating base 260, that is: along the direction in which each pair of differential communication terminals 240 is arranged, a grounding terminal 245 is provided on both sides of each pair of differential communication terminals 240; the insulating base 260 is a plastic structure in the shape of an approximate cuboid formed by inserting each pair of differential communication terminals 240 and the grounding terminal 245 into an injection mold to ensure insulation between each pair of differential communication terminals 240 and each grounding terminal 245. The differential communication terminal pairs 240, the shielding sheet 230, and the shielding cover 250 will be described in sequence below.

[0078] Regarding the differential communication terminal pairs 240, please refer to Figure 15 , which shows a three-dimensional schematic diagram of the differential communication terminal pairs 240 in one direction. Please also refer to Figures 1 to 14 , the differential communication terminal pairs 240 correspond to the above-mentioned differential signal terminals 140 one by one, that is, the more than two pairs of differential communication terminal pairs 240 are arranged in parallel along the width direction of the communication module receiving cavity 211. Each pair of differential communication terminal pairs 240 includes two differentially communicating terminals 241 arranged in parallel. Each differentially communicating terminal 241 includes a main body 242, a folded portion 243, and a welding portion 244. Among them, the main body 242 is used to engage with the above-mentioned differential signal terminals; the folded portion 243 is provided at one end of the main body 242 away from the electrical connector 100. One end of the folded portion 243 is connected to the end of the main body 242, and the other end extends towards the center of the communication module receiving cavity 211 and is perpendicular or nearly perpendicular to the main body 242; the welding portion 244 is provided at one end of the folded portion 243 away from the electrical connector 100. In this embodiment, the welding portion 244 is a solder ball, that is: the electrical connection device 200 is connected to an external electronic device (such as a circuit board, etc.) through each solder ball. It should be understood that in other embodiments of the present invention, the above-mentioned welding portion 244 may not be provided, and correspondingly, the folded portion 243 serves as the welding portion of the differential communication terminal 241.

[0079] Regarding the shielding sheet 230, please specifically refer to Figure 18 and Figure 19 , and also refer to Figures 1 to 17 , the shielding sheet 230 includes more than two shielding units 231, and the more than two shielding units 231 correspond to each pair of differential communication terminals 240 one by one.

[0080] Each shielding unit 231 is provided with a first receiving groove for receiving the welding portion 244 described above. Specifically, the shielding unit 231 includes a base wall 232, a first side wall 233, and a second side wall 234. The base wall 232 is integrally in a plate-like structure, and the width of one end thereof is smaller than that of the other end. On both sides of the end with the smaller width of the base wall 232, the above-mentioned first side walls 233 extend in the same direction. The two first side walls 233 are parallel and oppositely arranged, and the two first side walls 233 and the base wall 232 together enclose the above-mentioned first receiving groove. The side of the shielding unit 231 provided with the first receiving groove faces the differential communication terminal pair 240, and the first receiving groove completely receives the welding portion to prevent interference between the welding portion 244 located inside one of the first receiving grooves and the differential communication terminal pair 240 located outside the same first receiving groove. On one side of the end with the larger width of the base wall 232 (i.e., the end far from the first side wall), the above-mentioned second side wall 234 extends. The second side wall 234 is parallel to the above-mentioned first side wall 233 and is on the same side of the base wall 232 as the first side wall 233.

[0081] The two or more shielding units 231 are arranged in parallel along the direction from the first side wall 233 to the other first side wall 233 of the same shielding unit 231, and are sequentially fixedly connected through a connecting wall 235. Both ends of the connecting wall 235 are connected to the first side walls 233 arranged oppositely between adjacent two shielding units 231, and the middle thereof is fixedly connected to the grounding terminal 245 to realize grounding of the shielding sheet 230. At the same time, the second side walls 234 of adjacent two shielding units 231 and the base wall 232 between the two second side walls 234 together enclose a second receiving groove, and the second receiving groove at least partially receives the main body 242 of the differential communication terminal pair 240, which can play a role similar to that of the first receiving groove and will not be elaborated here. The "first side walls arranged oppositely" in this paragraph means: the two first side walls located inside between adjacent two shielding units 231.

[0082] Regarding the shielding cover 250, please specifically refer to Figure 18 and Figure 19 At the same time, in combination with Figures 1 to 17 The shielding cover 250 and the above-mentioned shielding sheet 230 are respectively arranged on both sides of each differential communication terminal pair 240. The shielding cover 250 is integrally in a long plate-like structure, and it is concave inward toward the grounding terminal 245 at the corresponding grounding terminal 245 and is fixedly connected to the grounding terminal 245 to realize grounding of the shielding cover 250; a plastic is filled between the shielding cover 250 and the differential communication terminal pair 240, so it is insulated from the differential communication terminal pair 240.

[0083] Please refer to Figure 20 which shows a partial enlarged schematic diagram at A. Please also combine with Figures 1 to 19When the electrical connection device 200 is mated with the above-mentioned electrical connector 100, each differential signal terminal pair 140 meshes with each differential communication terminal pair 240, each ground terminal 141 meshes with each ground terminal 245, the sealing end plate 153 and the shielding cover 250 are located on the same side of the shielding plate 130, and the shielding cover 150, the shielding plate 130 and the shielding cover 250 enclose the above-mentioned second shielding space, which can greatly reduce the electromagnetic signal escaping from the second shielding space or the external electromagnetic signal entering the second shielding space.

[0084] The electrical connection assembly provided by the embodiment of the present invention includes an electrical connector 100 and an electrical connection device 200 disposed on both sides of the electrical connector 100 and adapted to the electrical connector 100. When the electrical connector 100 is mated with the electrical connection device 200, the convex hull 132 and the baffle 135 on the shielding plate 130 jointly isolate the meshing parts of the adjacent differential signal terminal pairs 140, so that both the convex hull and the baffle 135 can at least partially shield the electromagnetic signals generated by the differential signal terminal pairs 140 on one side thereof, so as to reduce the interference of the electromagnetic signals on the differential signal terminal pairs 140 on the other side thereof. The elastic piece 134 on the shielding plate 130 can swing elastically, and it is used to carry the ground terminal 141 to avoid the drawback that the ground terminal 141 fails due to long-term compression during meshing. The shielding cover 150 and the shielding plate 130 integrally wrap the middle part of the differential signal terminal pair 140, and together with the shielding plate 130 and the shielding cover 250, they form a relatively closed second shielding space that wraps the meshing area of the differential signal terminal pair 140 and the differential communication terminal pair 240. The second shielding space can reduce the amount of electromagnetic signals escaping therefrom, or the external electromagnetic signal enters the second shielding space and causes communication interference to the differential signal terminal pair 140 and the differential communication terminal pair 240 in the second shielding space. In addition, a shielding piece 230 is further provided on the electrical connection device 200. The shielding piece 230 is provided with a first receiving groove for receiving the welding part 244 of the differential communication terminal pair 240. The first receiving groove separates the welding part 244 from other differential communication terminals, thereby greatly reducing the electromagnetic signals emitted by the welding part 244 from escaping from the first receiving groove, and / or preventing the signals emitted by other differential communication terminals from entering the first receiving groove and interfering with the operation of the differential communication terminals in the first receiving groove. Therefore, the shielding performance of the electrical connection assembly provided by the embodiment of the present invention is extremely good, and the interference received during the signal transmission process of each differential signal terminal and differential communication terminal therein is extremely small, which can meet the requirements of transmitting more information with a smaller volume and high signal quality.

[0085] It should be understood that even in the above embodiments, an electrical connection device 200 is connected to each side of the electrical connector 100. However, in other embodiments of the present invention, the electrical connector 100 may also be connected to only one electrical connection device 200. Correspondingly, at this time, the grounding terminal 141, the convex hull 132, the strip-shaped protrusion 133, the elastic piece 134, and the baffle 135 on the shielding plate 130 correspond one by one. One end of the strip-shaped protrusion 133 is connected to the convex hull 132, and the other end extends away from the convex hull 132. There is only one sealing end plate 153 and one sealing side plate 154 on the shielding cover 150. The sealing end plate 153 is located at one end of the top wall 151 close to the engagement area of the signal terminal, and the sealing side plate 154 is located at one end of the side wall 152 close to the sealing end plate 153.

[0086] It should be understood that even in the above embodiments, the differential signal terminal pair 140 is indirectly fixed to the insulating body 110 through the insulating base 160. However, in other embodiments of the present invention, the differential signal terminal pair 140 may also be directly fixed to the insulating body 110. Similarly, the differential communication terminal pair 240 may also be directly fixed to the insulating substrate 210. In addition, in the above embodiments, each group of differential signal terminal pairs 140 includes two signal terminals. However, in other embodiments of the present invention, the differential signal terminal pair 140 may also be replaced with a signal terminal group including only one terminal per group, or a signal terminal group including other specific numbers of terminals. Each group of signal terminals is arranged at intervals with the grounding terminal. Similarly, the differential communication terminal pair 240 may also be replaced with a communication terminal group including only one terminal per group, or a communication terminal group including other specific numbers of terminals. Each group of communication terminals is arranged at intervals with the grounding terminal.

[0087] In addition, for the convenience of explaining the technical solution of the present invention, in the above embodiments, the same signal module 120 includes more than two groups of differential signal terminal pairs 140. It can be understood that in other embodiments of the present invention, a signal module 220 may also have only one group of differential signal terminal pairs 140. At this time, correspondingly, the numbers of the shielding cover 150 and the shielding unit 231 are both one, and the differential communication terminal pair 240 is one group. That is, the numbers of the differential signal terminal pair 140, the shielding cover 150, the differential communication terminal pair 240, and the shielding unit 231 are at least one group or at least one.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electrical connector, characterized in that, Comprising: Insulating body; Shielding plate, fixed to the insulating body, the shielding plate including a substrate and a convex bulge; Shielding cover, the shielding cover including a top wall and side walls fixedly connected to opposite sides of the top wall, one end of the side wall away from the top wall being fixed to the shielding plate, the shielding cover and the shielding plate enclosing a first shielding space; And Signal terminal, fixed to the insulating body, at least part of the signal terminal being received in the first shielding space, the substrate and the top wall being respectively disposed on both sides of the signal terminal, the convex bulge being provided on the substrate, and the position of the convex bulge corresponding to the meshing area of the signal terminal, the convex bulge being used to at least partially shield the electromagnetic signal generated by the signal terminal disposed on one side of the convex bulge, so as to reduce the interference of the electromagnetic signal to the signal terminal disposed on the other side of the convex bulge.

2. The electrical connector according to claim 1, characterized in that, The shielding cover further includes a sealing end plate, one end of the sealing end plate being connected to the end of the top wall, and the other end of the sealing end plate extending in a direction away from the shielding plate; Along the direction in which the electrical connector is adapted to an external electrical connection device, the sealing end plate is located between the two ends of the shielding plate, and the sealing end plate is used to jointly enclose a second shielding space with the shielding plate and a shielding cover on the electrical connection device when the electrical connector is adapted to the external electrical connection device.

3. The electrical connector according to claim 2, wherein, The shielding cover further includes a sealing side plate, the sealing side plate being disposed at one end of the side wall close to the sealing end plate, one end of the sealing side plate being connected to one of the side walls, and the other end of the sealing side plate extending in a direction parallel to the side wall and away from the side wall.

4. The electrical connector according to claim 3, wherein The number of the shielding covers is two or more, and the two or more shielding covers are arranged in parallel.

5. The electrical connector according to any one of claims 2 to 4, wherein The shielding plate includes strip-shaped protrusions; the number of the strip-shaped protrusions is two or more, the two or more strip-shaped protrusions are arranged in parallel and fixed to one end of the substrate close to the top wall, and the two side walls of the shielding cover are respectively fixedly connected to adjacent two of the strip-shaped protrusions; the convex bulge is disposed at one end of the strip-shaped protrusion.

6. The electrical connector according to claim 5, characterized in that, The convex bulge is from one end close to the strip-shaped protrusion to the end away from the strip-shaped protrusion, and the distance between the end of the convex bulge away from the substrate and the substrate gradually increases.

7. The electrical connector according to claim 5, characterized in that, It further includes a grounding terminal, the grounding terminal including a fixed section, a connecting section and a bending section, the fixed section extending along a direction parallel to the strip-shaped protrusion and being fixed between the strip-shaped protrusion and the side wall, one end of the connecting section being connected to one end of the fixed section close to the convex bulge, the other end of the connecting section extending in a direction away from the substrate, one end of the bending section being connected to the other end of the connecting section away from the fixed section, the other end of the bending section extending in a direction close to the substrate, and there being an arc transition between the bending section and the connecting section.

8. The electrical connector according to claim 7, wherein The shielding plate further includes an elastic piece, the elastic piece including a connecting portion and a bending portion; The connecting part is obliquely connected to the substrate and is located on the side of the convex hull away from the strip protrusion. One end of the connecting part is connected to the substrate, and the other end of the connecting part extends obliquely towards the convex hull; One end of the bending part is connected to the end of the connecting part away from the substrate, the other end of the bending part extends towards the substrate, and there is an arc transition between the bending part and the connecting part; The elastic piece is used to carry the terminal when the meshing area of the grounding terminal moves towards the substrate; 9. The electrical connector according to claim 8, wherein, The shielding plate further includes a baffle plate, one end of the baffle plate is connected to the elastic piece, and the other end of the baffle plate extends towards the convex hull; 10. The electrical connector according to claim 9, wherein, The substrate is provided with a through groove corresponding to the baffle plate. The through groove is used for at least part of the baffle plate to enter the through groove when the elastic piece swings towards the substrate; 11. An electrical connection component, characterized in that, It includes the electrical connector according to any one of claims 2 to 10, and an electrical connection device adapted to the electrical connector. The electrical connection device includes: An insulating substrate; Communication terminals fixed to the insulating substrate, and the communication terminals are used to match with the signal terminals on the electrical connector; and A shielding cover fixed to the insulating substrate and provided on one side of the communication terminals. When the electrical connection device is matched with the electrical connector, the shielding cover and the sealing end plate are on the same side of the shielding plate, and the shielding cover, the sealing end plate and the shielding plate enclose a second shielding space.

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