Shielding plate and electrical connector

Abstract

The embodiment of the present invention relates to the technical field of electrical connectors, and discloses a shielding plate and an electrical connector. The shielding plate includes: a substrate; and a baffle connected to the substrate, the baffle being used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the baffle, so as to reduce the interference of the electromagnetic signal on the signal terminal arranged on the other side of the baffle. The shielding plate provided in the embodiment of the present invention is connected with a baffle, and the baffle can be arranged in the meshing area of ​​the signal terminal, so that the above-mentioned baffle can isolate the meshing areas of the signal terminals on both sides thereof, so that when the electrical connector is working, the amount of the electromagnetic signal generated by the signal terminal escaping to the other side of the baffle is greatly reduced, thereby reducing the influence of the above-mentioned electromagnetic signal on the signal transmission of the signal terminal on the other side of the baffle.

Description

[Technical field]

[0001] The embodiments of the present invention relate to the technical field of electrical connectors, and in particular to a shielding plate and an electrical connector. [Background technology]

[0002] Electrical connectors are widely used in various electronic devices to achieve electrical connection with external plug-ins, thereby transmitting audio, video or other data signals. Generally, the electrical connector includes an insulating body formed by injection molding and a terminal mounted on the insulating body.

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

[0004] The embodiments of the present invention are intended to provide a shielding plate and an electrical connector to reduce the interference degree of the electromagnetic signal generated by the signal terminal on the normal signal transmission of other adjacent signal terminals.

[0005] The embodiment of the present invention solves the technical problem by adopting the following technical solution:

[0006] A shielding plate, comprising:

[0007] substrate; and

[0008] A baffle is connected to the substrate, and is used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the baffle, so as to reduce the interference of the electromagnetic signal on the signal terminal arranged on the other side of the baffle.

[0009] As a further improvement of the above technical solution, the baffle is elastically connected to the substrate, the substrate is provided with a through slot corresponding to the baffle, and the baffle can move in a direction close to the substrate until the baffle at least partially enters the through slot.

[0010] As a further improvement of the above technical solution, it also includes a spring sheet, which includes a connecting portion, the connecting portion is obliquely connected to the substrate, one end of the connecting portion is connected to the substrate, and the other end of the connecting portion extends in a direction away from the substrate, and the spring sheet is used to support the terminal when the external terminal moves in a direction close to the substrate.

[0011] As a further improvement of the above technical solution, the spring sheet further includes a bending portion, one end of the bending portion is connected to an end of the connecting portion away from the substrate, and the other end of the bending portion extends toward the substrate.

[0012] As a further improvement of the above technical solution, an arc transition is formed between the bending portion and the connecting portion to form a first abutting portion, and the first abutting portion is used to support the external terminal.

[0013] As a further improvement of the above technical solution, the baffle is fixed to the spring sheet.

[0014] The embodiment of the present invention also adopts the following technical solutions to solve the technical problems:

[0015] An electrical connector comprises an insulating body, a signal terminal, and the above-mentioned shielding plate. The signal terminal and the shielding plate are both fixed to the insulating body, and the signal terminals are arranged on both sides of the baffle.

[0016] As a further improvement of the above technical solution, it also includes a grounding terminal, which is fixed to the insulating body and is located on the same side of the substrate as the spring sheet. The grounding terminal includes a fixed section, a connecting section and a bending section. The fixed section is fixed to the shielding plate, one end of the connecting section is connected to the fixed section, and the other end of the connecting section extends in a direction away from the shielding plate, one end of the bending section is connected to an end of the connecting section away from the fixed section, and the other end of the bending section extends in a direction close to the substrate. The connecting section and the bending section form a meshing area of ​​the grounding terminal, and along a direction perpendicular to the substrate, the spring sheet is located between the meshing area of ​​the substrate and the grounding terminal.

[0017] As a further improvement of the above technical solution, the bending section and the connecting section transition into an arc to form a second abutting portion, and the second abutting portion is used to abut against an end of the spring sheet away from the substrate.

[0018] As a further improvement of the above technical solution, the grounding terminal corresponds to the spring sheet one by one, and the grounding terminal and the signal terminal are arranged in parallel and at intervals.

[0019] The beneficial effects of the present invention are:

[0020] The shielding plate provided in an embodiment of the present invention includes a substrate and a baffle, which is connected to the substrate and is used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the baffle to reduce the interference of the electromagnetic signal on the signal terminal arranged on the other side of the baffle.

[0021] Compared with the shielding plates in other electrical connectors currently on the market, the shielding plate provided in the embodiment of the present invention is connected to a baffle, which can be set in the mating area of ​​the signal terminal. The baffle can isolate the mating areas of the signal terminals on both sides thereof, so that when the electrical connector is working, the amount of electromagnetic signals generated by the signal terminals escaping to the other side of the baffle is greatly reduced, thereby reducing the influence of the electromagnetic signals on the signal transmission of the signal terminals on the other side of the baffle.

Brief Description of the Drawings

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0023] Figure 1 A three-dimensional schematic diagram of an electrical connection assembly provided in one embodiment of the present invention;

[0024] Figure 2 for Figure 1 Exploded diagram of the China Electric connection components;

[0025] Figure 3 for Figure 1 A three-dimensional cutaway diagram of a CEC connection assembly;

[0026] Figure 4 for Figure 1 A cross-sectional diagram of a CEC connection assembly in an exploded state;

[0027] Figure 5 for Figure 1 Exploded diagram of the CEC connector;

[0028] Figure 6 for Figure 5 A three-dimensional schematic diagram of a middle shielding plate in one direction;

[0029] Figure 7 for Figure 5 A three-dimensional schematic diagram of the middle shielding plate in another direction;

[0030] Figure 8 for Figure 6 A partial enlarged schematic diagram of point C in the middle;

[0031] Fig. 9 for Figure 7A partial enlarged schematic diagram of point D in the middle;

[0032] Fig.10 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0033] Fig.11 for Fig.10 A three-dimensional schematic diagram of the grounding terminal;

[0034] Fig.12 for Figure 5 A three-dimensional schematic diagram of the middle shielding cover in one direction;

[0035] Fig.13 for Figure 5 A three-dimensional schematic diagram of the middle shielding cover in another direction;

[0036] Fig.14 for Figure 1 Exploded diagram of the CEC connection device;

[0037] Fig.15 for Fig.14 A three-dimensional schematic diagram of a differential communication terminal pair;

[0038] Fig.16 for Fig.14 A three-dimensional schematic diagram of a communication module in one direction;

[0039] Fig.17 for Fig.14 A three-dimensional schematic diagram of the communication module in another direction;

[0040] Fig.18 for Fig.16 Schematic diagram of the communication module;

[0041] Fig.19 for Fig.17 Schematic diagram of the communication module;

[0042] Fig. 20 for Figure 3 A local enlarged schematic diagram of point A in the middle. [Specific implementation method]

[0043] In order to facilitate the understanding of the present invention, the present invention is 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" / "fixed to" another element, it can be directly on the other element, or there can be one or more centered 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 centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0045] 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.

[0046] In this specification, the term "installation" includes fixing or restricting a component or device to a specific position or place by welding, screwing, clamping, bonding, etc. The component or device may remain stationary at the specific position or place or move within a limited range. After being fixed or restricted to a specific position or place, the component or device may or may not be disassembled, which is not limited in the embodiments of the present invention.

[0047] See also Figures 1 to 4, which respectively show a three-dimensional schematic diagram, a decomposed schematic diagram, a three-dimensional cross-sectional schematic diagram and a cross-sectional schematic diagram in a decomposed state of an electrical connection assembly provided by one embodiment of the present invention, wherein the electrical connection assembly 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 a differential signal terminal pair 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 a differential communication terminal pair fixedly arranged on the insulating base 210, and the insulating base 210 is provided with a receiving cavity for accommodating the differential communication terminal. When the electrical connector 100 and the electrical connection device 200 are matched, 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 terminal, and the differential signal terminal is inserted into the above-mentioned receiving cavity and elastically abuts against the differential communication terminal to achieve electrical connection, then the signal can be transmitted from one electrical connection device 200 to another electrical connection device 200 through the electrical connector 100. It is understandable that in other embodiments of the present invention, the electrical connector 100 may also be connected to only one electrical connection device 200 .

[0048] For ease of understanding, the electrical connector 100 is first described in detail below.

[0049] For the 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. The insulating body 110 is in the shape of a rectangular parallelepiped as a whole, and is provided with two or more parallelly arranged signal module receiving cavities 111 along the height direction as shown in the figure. The signal module receiving cavity 111 penetrates the insulating body 110 as a whole along the horizontal direction as shown in the figure, and the signal module 120 is fixed to the insulating body 110 in a detachable connection manner and received in the signal module receiving cavity 111. For ease of reading, only one pair of signal modules 120 is shown in the accompanying drawings, and the pair of signal modules 120 are symmetrically arranged along the height direction as shown in the figure and received in the same signal module receiving cavity 111; it can be understood that the electrical connector 100 may include more than two pairs of signal modules 120, and each pair of signal modules 120 is respectively received in different signal module receiving cavities 111 in the above-mentioned manner.

[0050] Regarding the signal module 120, each signal module 120 includes a shielding plate 130, two or more differential signal terminal pairs 140 and two or more shielding covers 150, which are arranged in sequence from the center of the signal module accommodating cavity 111 along the height direction to the direction away from the center. The shielding plate 130, the differential signal terminal pair 140 and the shielding cover 150 are described in sequence below.

[0051] For 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 C and D. Please also combine Figures 1 to 6 The shielding plate 130 includes a substrate 131, and two or more convex bumps 132 and two or more strip-shaped protrusions 133 disposed on the substrate 131. The substrate 131 is a flat plate-shaped structure as a whole, and a mounting surface 1311 is disposed at one end thereof away from the center of the signal module receiving cavity 111, and the convex bumps 132 and strip-shaped protrusions 133 are disposed on the mounting surface 1311.

[0052] The two or more strip-shaped protrusions 133 are arranged parallel to each other on the mounting surface 1311, and both ends of each strip-shaped protrusion 133 are connected to the convex bumps 132. The distance between the end of the convex bump 132 away from the substrate 131 and the substrate 131 gradually increases from the end close to the strip-shaped protrusion 133 to the end away from the strip-shaped protrusion 133. 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 bump 132. When the differential signal terminal pair 140 is meshed with the differential communication terminal pair of the electrical connection device 200, the meshing area of ​​the differential signal terminal pair 140 is at least partially lower than the end of the convex bump 132 away from the substrate 131. The convex bump 132 can at least partially shield the electromagnetic signal generated by the differential signal terminal pair 140 on one side when it is working, so as to reduce the interference of the electromagnetic signal to the differential signal terminal pair 140 on the other side of the convex bump 1323.

[0053] In order to enhance the shielding function of the shielding plate 130, the electrical connector 100 further includes a grounding terminal. Fig.10 and Fig.11, which respectively show a local enlarged schematic diagram at B and a three-dimensional schematic diagram of the grounding terminal. Please combine them with the other drawings. The grounding terminal 141 extends parallel to the direction in which the strip protrusion 133 extends as a whole and is fixed to the end of the strip protrusion 133 away from the substrate 131. The grounding terminal 141 is electrically connected to the shielding plate 130 to achieve grounding of the shielding plate 130 when the electrical connector 100 and the electrical connection device 200 are matched. The grounding terminal 141 is a flat long plate-like structure as a whole, which includes a fixed section 142, a connecting section 143 and a bending section 144, each end of the fixed section 142 is connected to the above-mentioned connecting section 143 and the bending section 144 in sequence; wherein, the fixed section 142 extends in a direction parallel to the strip protrusion 133 and is fixed to the end of the strip protrusion 133 away from the substrate 131, one end of the connecting section 143 is connected to the end of the fixed section 142 close to the convex 132, and the other end of the connecting section 143 extends obliquely toward the end away from the substrate 131, one end of the bending section 144 is connected to the end of the connecting section 143 away from the fixed section 142, and the other end of the bending section 144 extends in a direction close to the substrate 131, and the connecting section 143 and the bending section 144 together form an engagement area of ​​the grounding terminal, and the junction between the two is used to abut against the corresponding grounding terminal on the electrical connection device 200. When the ground terminal 141 contacts the corresponding ground terminal on the electrical connection device 200, it will passively elastically move toward the center of the signal module receiving cavity 111, so the connecting section 143 at least partially extends to the side of the convex bump 132 away from the strip protrusion 133. Preferably, there is a certain gap between the connecting section 143 and the end of the convex bump 132 away from the mounting surface. The shape of the end of the convex bump 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 of the differential signal terminal pair 140 relative to the substrate 131 after engagement is less than the distance between the convex bump 132 at this end and the substrate 131 as much as possible.

[0054] Furthermore, in order to prevent the grounding terminal 141 from being forced to bend elastically toward the center of the signal module receiving cavity 111 for a long time and undergoing plastic deformation when the grounding terminal 141 is engaged with the corresponding grounding terminal on the electrical connection device 200, the shielding plate 130 further includes a spring 134, which is located between the substrate 131 and the engagement area of ​​the grounding terminal 141 in a direction perpendicular to the substrate 131. Figure 8 and Fig. 9, and in combination with other drawings, the spring piece 134 is arranged on the above-mentioned mounting surface 1311 and is located on the side of the convex bump 132 away from the strip-shaped protrusion 133, and the spring piece 134 corresponds to the convex bump 132 one by one. Specifically, the spring piece 134 is elastically connected to the substrate 131, and 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 bump 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 is obliquely extended in a direction close to the convex bump 132, that is: the distance between the connecting portion 1341 and the substrate 131 gradually decreases along the direction away from the convex bump 132; 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 a 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 spring piece 134 as a whole can elastically swing around the end of the connecting portion 1341 away from the bending portion 1342. The junction between the bending portion 1342 and the connecting portion 1341 is used to support the meshing area of ​​the grounding terminal 141. When the grounding terminal 141 is engaged, it overcomes the elastic force of the spring piece 134 and moves toward the direction close to the substrate 131. When the grounding terminal 141 is disengaged, it is reset under the elastic action of the spring piece 134. Preferably, the connecting section 143 and the bending section 144 of the grounding terminal 141 have an arc transition and form a first abutment portion at the transition position, and the connecting section 1341 and the bending section 1342 of the spring sheet 134 have an arc transition and form a second abutment portion at the transition position; the grounding terminal 141 and the spring sheet 134 are fitted together through the first abutment portion and the second abutment portion, which can reduce the damage of the spring sheet 134 to the grounding terminal 141 during assembly and use on the one hand, and on the other hand, the arc overlap of the first abutment portion and the second abutment portion is also beneficial to reducing signal crosstalk between adjacent differential signal terminals.

[0055] Furthermore, in the present 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 installation distance between the differential signal terminal and the ground terminal 141 relative to the substrate 131 is substantially the same. Both ends of the differential signal terminal extend to the edge of the substrate 131 in a direction parallel to the strip-shaped protrusion 133, that is, between the convex bump 132 and the end of the spring away from the convex bump 132. Even if the convex bump can play a certain shielding role on the differential signal terminal pair 140, in the area between the convex bump 132 and the end of the spring away from the convex bump 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 a plate-shaped structure as a whole, one end of which is connected to the spring 134, and the other end extends to the convex bump 132 to its edge. The baffle 135 and the convex bump 132 together isolate the meshing areas of the differential signal terminal pairs 140 disposed on both sides of the above structure, which can significantly reduce the interference of the signals generated by the differential signal terminal pairs 140 on one side of the baffle 135 and the convex bump 132 on the differential signal terminal pairs 140 on the other side.

[0056] Furthermore, in order to prevent the spring piece 134 from swinging with the ground terminal 141 toward the substrate 131 when the electrical connector 100 is engaged with the electrical connection device 200, while the baffle 135 abuts against and interferes with the substrate 131, the substrate 131 of the shielding plate 130 is provided with a through slot 1312 at a position corresponding to the baffle 135, and when the spring piece 134 moves toward the substrate 131, the baffle 135 can at least partially enter the through slot 1312. In this embodiment, the length of the through slot 1312 along the extending direction of the strip-shaped protrusion 133 is slightly smaller than the length of the baffle 135 in the same direction. During the entire process of the baffle 135 approaching the substrate 131, the end of the baffle 135 close to the convex bump 132 enters the through slot 1312, and the end of the baffle 135 away from the convex bump 132 always has a gap with the substrate 131, so that the baffle 135 will never contact the substrate 131 and cause interference. It is understandable that in other embodiments of the present invention, the length of the through slot 1312 in the above direction may also be greater than or equal to the length of the baffle 135 in the direction, and the present invention does not specifically limit this. The provision of the through slot 1312 can make the dimension of the baffle 135 in the direction perpendicular to the substrate 131 as long as possible, thereby reducing the possibility of electromagnetic signals escaping from the gap between the baffle 135 and the substrate 131, thereby achieving a better shielding effect. It is understandable that even though in this embodiment, the baffle 135 is fixed to the spring 134, in other embodiments of the present invention, the baffle 135 may also be directly fixed to the substrate 131, in which case, the above-mentioned through slot 1312 is no longer required.

[0057] Regarding the differential signal terminal pair 140, its shape is basically the same as the above-mentioned grounding terminal 141. The signal module 120 includes more than two groups of differential signal terminal pairs 140, which 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 arranged between two adjacent grounding terminals 141. In order to ensure the consistency of the bite force between the grounding terminal 141 and the differential signal terminal when engaging with the corresponding terminal on the electrical connection device, the differential signal terminal pair 140 and the grounding terminal 141 are at the same distance relative to the substrate 131. It is worth noting that the differential signal terminal pair 140 is insulated from the shielding plate 130.

[0058] Further, in order to facilitate the assembly of the above-mentioned differential signal terminal pairs 140 and the grounding terminals 141, and to achieve insulation between the two, the signal module 120 in this embodiment also includes an insulating base frame 160, which is formed by injection molding. Specifically, in this embodiment, the insulating base frame 160 is formed by placing the differential signal terminal pairs 140 and the grounding terminals 141 into an injection mold as inserts. Among them, the grounding terminal 141 is at least partially exposed, so that it can be fixed to the strip protrusion of the shielding plate 130 by welding or the like. It is worth noting that after welding, plastic is filled between each differential signal terminal pair 140 and the shielding plate 130 to achieve insulation 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 a snap connection. The signal module 120 is fixed to the insulating body 110 in a detachable connection manner, which is convenient for users to assemble a suitable number of signal modules 120 according to actual needs.

[0059] For shielding cover 150, please refer to Fig.12 and Fig.13 , which respectively show the three-dimensional schematic diagrams of the shielding cover 150 in two directions, please also combine Figures 1 to 11The shielding cover 150 includes a plate-shaped top wall 151 and side walls 152 fixedly connected to the top wall 151 on opposite sides. The top wall 151 and the side walls 152 form a structure with a U-shaped cross section. The shielding cover 150 is arranged 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 mounting surface 1311. In this embodiment, the number of shielding covers 150 corresponds to the number of differential signal terminal pairs 140, and the length thereof is substantially equal to the strip-shaped protrusion 133. Each shielding cover 150 extends in a direction parallel to the strip-shaped protrusion 133, and the two side walls thereof are respectively fixed to two adjacent grounding terminals 141. Each shielding cover 150 and the corresponding strip protrusion 133 and substrate 131 together form a first shielding space that at least partially accommodates the outer periphery of the differential signal terminal pair 140, thereby preventing the electromagnetic signal emitted by the differential signal terminal pair 140 from escaping from the first shielding space to the adjacent differential signal terminal pair 140, and / or preventing external electromagnetic signals from entering the shielding space and interfering with the differential signal terminal pair in the first shielding space, thereby further improving the shielding effect and reducing signal crosstalk.

[0060] The shielding cover 150 further includes two sealing end plates 153 arranged opposite to each other. Along the length direction of the shielding cover 150 (i.e., the extending direction of the strip-shaped protrusions mentioned above), the two sealing end plates 153 are respectively arranged at the two 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 form a relatively sealed second shielding space that partially surrounds the mating area of ​​the differential signal terminal pair 140 together with the shielding plate 130 and the shielding cover on the electrical connection device 200 when the electrical connector 100 is matched with the electrical connection device 200, so as to reduce the amount of electromagnetic signals entering from the outside of the electrical connection assembly and / or the amount of electromagnetic signals escaping from the electrical connection assembly.

[0061] Furthermore, in order to improve the shielding effect of the second shielding space, the shielding cover 150 further includes two sealing side plates 154, which are respectively located at the two ends of the side wall 152 along the extension direction 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 toward a side away from the side wall 152 along the extension direction parallel to the side wall 152. One end of the sealing side plate 154 away from the top wall 151 extends obliquely and is substantially the same as the oblique direction of the convex bump 132 to avoid interference with the grounding terminal 141. The sealing side plates 154 on the adjacent shielding covers 150, the sealing end plates 153 between the two sealing side plates 154, the convex bumps 132 corresponding to the two sealing side plates 154, the baffles 135, the substrate 131, and the shielding cover on the electrical connection device 200 together form a basically sealed second shielding space, which can greatly reduce the electromagnetic signal emitted by the differential signal terminal pair 140 from escaping from its meshing area to the adjacent differential signal terminal pair 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.

[0062] Next, the electrical connection device 200 will be described in detail.

[0063] For the above-mentioned electrical connection device 200, please refer to Figures 14 to 19 , which respectively show an exploded schematic diagram of the electrical connection device 200, a stereoscopic schematic diagram of a differential communication terminal pair, a stereoscopic schematic diagram of a communication module in two directions, and an exploded schematic diagram of a communication module in two directions. Please also combine Figures 1 to 13 , the electrical connection device 200 includes an insulating substrate 210 and a communication module 220. The insulating substrate 210 is in the shape of a rectangular parallelepiped as a whole, and is provided with two or more parallelly arranged communication module receiving cavities 211 along the height direction shown in the figure. The communication module receiving cavity 211 penetrates the insulating body 110 as a whole along the horizontal direction shown in the figure. The communication module receiving cavity 211 corresponds to the above-mentioned signal module receiving cavity 111 one by one. The communication module 220 is fixed to the insulating substrate 210 in a detachable manner and received in the signal module receiving cavity 111. Similar to the above-mentioned signal module 120, for ease of reading, only one pair of communication modules 220 is shown in the accompanying drawings, and the pair of communication modules 220 are symmetrically arranged along the height direction shown in the figure and received in the same communication module receiving cavity 211; it can be understood that the electrical connection device 200 may include more than two pairs of communication modules 220, and each pair of communication modules 220 is respectively received in different communication module receiving cavities 211 in the above-mentioned form.

[0064] Regarding the communication module 220, each communication module 220 includes a shielding sheet 230 arranged in sequence from the center of the communication module receiving cavity 211 along the height direction to the direction away from the center, two or more groups of differential communication terminal pairs 240, grounding terminals 245 arranged at intervals from the differential communication terminal pairs 240, and a shielding cover 250. Among them, each differential communication terminal pair 240 and the grounding terminal 245 are arranged in parallel and at intervals, and are integrally arranged through an insulating base 260, that is: along the direction in which each differential communication terminal pair 240 is arranged, a grounding terminal 245 is provided on both sides of each group of differential communication terminal pairs 240; the insulating base 260 is a plastic structure of a rectangular parallelepiped formed in an injection mold with each differential communication terminal pair 240 and the grounding terminal 245 as inserts to ensure insulation between each differential communication terminal pair 240 and each grounding terminal 245. The differential communication terminal pair 240, the shielding sheet 230, and the shielding cover 250 are described in sequence below.

[0065] For differential communication terminal pair 240, please refer to Fig.15 , which shows a three-dimensional schematic diagram of a differential communication terminal pair 240 in one direction, please also refer to Figures 1 to 14 , the differential communication terminal pair 240 corresponds to the above-mentioned differential signal terminal 140 one by one, that is, the two or more groups 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 differential communication terminals 241 arranged in parallel, and each differential communication terminal 241 includes a main body 242, a detour 243 and a welding portion 244. Among them, the main body 242 is used to engage with the above-mentioned differential signal terminal; the detour 243 is arranged at the end of the main body 242 away from the electrical connector 100, one end of the detour 243 is connected to the end of the main body 242, and the other end extends to 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 arranged at the end of the detour 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 be absent, and the corresponding detour portion 243 serves as the welding portion of the differential communication terminal 241 .

[0066] For details about the shielding sheet 230, please refer to Fig.18 and Fig.19 , while combining Figures 1 to 17 The shielding sheet 230 includes more than two shielding units 231 , and the more than two shielding units 231 correspond one-to-one to each differential communication terminal pair 240 .

[0067] Each shielding unit 231 is provided with a first receiving groove for accommodating the above-mentioned welding portion 244. 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 a plate-like structure as a whole, and the width of one end thereof is smaller than the width of the other end. The two sides of the small width end of the base wall 232 extend the above-mentioned first side walls 233 in the same direction respectively. The two first side walls 233 are parallel and oppositely arranged, and the two first side walls 233 and the base wall 232 together form the above-mentioned first receiving groove. The shielding unit 231 is provided with a first receiving groove on one side facing the differential communication terminal pair 240, and the first receiving groove completely accommodates the welding portion to avoid mutual interference between the welding portion 244 located inside the first receiving groove and the differential communication terminal pair 240 located outside the same first receiving groove. The second side wall 234 extends from one side of the wide end of the base wall 232 (ie, the end away from the first side wall). The second side wall 234 is parallel to the first side wall 233 and is located on the same side of the base wall 232 as the first side wall 233 .

[0068] The more than two shielding units 231 are arranged in parallel along the direction of the first side wall 233 pointing to the other first side wall 233 of the same shielding unit 231, and are fixedly connected in sequence through the connecting wall 235. The two ends of the connecting wall 235 are respectively connected to the first side walls 233 arranged opposite to each other between the two adjacent shielding units 231, and the middle part is fixedly connected to the grounding terminal 245 to achieve the grounding of the shielding sheet 230. At the same time, the second side walls 234 of the two adjacent shielding units 231 and the base wall 232 between the two second side walls 234 together form a second receiving groove, and the second receiving groove at least partially receives the main body 242 of the above-mentioned differential communication terminal pair 240, which can play a similar role as the first receiving groove, which will not be repeated here. In this paragraph, "first side walls arranged opposite to each other" means: the two first side walls located on the inner side between the two adjacent shielding units 231.

[0069] For details about the shielding cover 250, please refer to Fig.18 and Fig.19 , while combining Figures 1 to 17 The shielding cover 250 and the shielding sheet 230 are respectively arranged on both sides of each differential communication terminal pair 240. The shielding cover 250 is an overall long plate-shaped structure, which is concave toward one side of the grounding terminal 245 at the corresponding grounding terminal 245, and is fixedly connected to the grounding terminal 245 to achieve grounding of the shielding cover 250; 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.

[0070] Please refer to Fig. 20 , which shows a partial enlarged schematic diagram of A. Please also combine Figures 1 to 19When the electrical connection device 200 is matched with the above-mentioned electrical connector 100, each differential signal terminal pair 140 is engaged with each differential communication terminal pair 240, each grounding terminal 141 is engaged with each grounding 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 form the above-mentioned second shielding space, which can greatly reduce the escape of electromagnetic signals in the second shielding space, or the entry of external electromagnetic signals into the second shielding space.

[0071] 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 adapted to the electrical connection device 200, the convex bump 132 and the baffle 135 on the shielding plate 130 jointly isolate the meshing parts of the adjacent differential signal terminal pairs 140, and the convex bump and the baffle 135 can at least partially shield the electromagnetic signal generated by the differential signal terminal pair 140 on one side thereof, so as to reduce the interference of the electromagnetic signal on the differential signal terminal pair 140 on the other side thereof. The spring piece 134 on the shielding plate 130 can swing elastically, and is used to carry the grounding terminal 141, so as to avoid the disadvantage of fatigue failure of the grounding terminal 141 due to long-term pressure when meshing. The shielding cover 150 and the shielding plate 130 integrally wrap the middle part of the differential signal terminal pair 140, and the shielding cover 150, the shielding plate 130, and the shielding cover 250 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 signal leakage therein, or external electromagnetic signals enter the second shielding space and cause communication interference to the differential signal terminal pair 140 and the differential communication terminal pair 240 in the second shielding space. In addition, the electrical connection device 200 is also provided with a shielding sheet 230, and the shielding sheet 230 is provided with a first receiving groove for accommodating the welding portion 244 of the differential communication terminal pair 240. The first receiving groove separates the welding portion 244 from other differential communication terminals, thereby greatly reducing the electromagnetic signal emitted by the above-mentioned welding portion 244 from escaping the first receiving groove, and / or preventing the signal emitted by other differential communication terminals from entering the first receiving groove and interfering with the operation of the differential communication terminal in the above-mentioned first receiving groove. Therefore, the electrical connection assembly provided by the embodiment of the present invention has excellent shielding performance, and the signal transmission process of each differential signal terminal and differential communication terminal therein is subject to minimal interference, which can meet the requirements of transmitting more information in a smaller volume with high signal quality.

[0072] It should be understood that: even if in the above embodiment, an electrical connection device 200 is connected to each side of the electrical connector 100, in other embodiments of the present invention, the electrical connector 100 may also be connected to only one electrical connection device 200. Accordingly, at this time, the grounding terminal 141, the bulge 132 on the shielding plate 130, the strip protrusion 133, the spring piece 134 and the baffle 135 correspond to each other one by one, one end of the strip protrusion 133 is connected to the bulge 132, and the other end extends in a direction away from the bulge 132; there is also only one sealing end plate 153 and sealing side plate 154 on the shielding cover 150, and the sealing end plate 153 is located at one end of the top wall 151 close to the meshing 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.

[0073] It should be understood that even though the differential signal terminal pair 140 in the above embodiment is indirectly fixed to the insulating body 110 through the insulating base frame 160, in other embodiments of the present invention, the differential signal terminal pair 140 can also be directly fixed to the insulating body 110; similarly, the differential communication terminal pair 240 can also be directly fixed to the insulating base 210. In addition, in the above embodiment, each group of differential signal terminal pairs 140 includes two signal terminals, while in other embodiments of the present invention, the differential signal terminal pair 140 can also be replaced by a signal terminal including only one terminal per group, or a signal terminal including other specific number of terminals per group, and each group of signal terminals is arranged at intervals with the ground terminal; similarly, the differential communication terminal pair 240 can also be replaced by a communication terminal including only one terminal per group, or a communication terminal including other specific number of terminals per group, and each group of communication terminals is arranged at intervals with the ground terminal.

[0074] In addition, to facilitate the explanation of the technical solution of the present invention, in the above-mentioned embodiment, 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 can also have only one group of differential signal terminal pairs 140. At this time, correspondingly, the number of shielding covers 150 and shielding units 231 are both one, and the differential communication terminal pairs 240 are a group, that is, the number of differential signal terminal pairs 140, shielding covers 150, differential communication terminal pairs 240 and shielding units 231 is at least one group or at least one.

[0075] 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 them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shielding plate, characterized in that: include: substrate; as well as A baffle is elastically connected to the substrate, the substrate is provided with a through slot at a position corresponding to the baffle, and the baffle can move in a direction close to the substrate until the baffle at least partially enters the through slot; The baffle is used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the baffle, so as to reduce the interference of the electromagnetic signal on the signal terminal arranged on the other side of the baffle; A bulge is arranged on the substrate, and one end of the baffle plate close to the bulge enters the through groove, and there is a gap between the end of the baffle plate away from the bulge and the substrate. The bulge is used to at least partially shield the electromagnetic signal generated by the signal terminal arranged on one side of the bulge to reduce the interference of the electromagnetic signal on the signal terminal arranged on the other side of the baffle plate.

2. The shielding plate according to claim 1, characterized in that It also includes a spring sheet, which includes a connecting portion, the connecting portion is obliquely connected to the substrate, one end of the connecting portion is connected to the substrate, and the other end of the connecting portion extends in a direction away from the substrate. The spring sheet is used to support the terminal when the external terminal moves in a direction close to the substrate.

3. The shielding plate according to claim 2, characterized in that The spring sheet further includes a bending portion, one end of which is connected to an end of the connecting portion away from the substrate, and the other end of the bending portion extends toward a direction close to the substrate.

4. The shielding plate according to claim 3, characterized in that: The bending portion and the connecting portion are transitioned into an arc to form a first abutting portion, and the first abutting portion is used to support the external terminal.

5. The shielding plate according to claim 2, characterized in that: The baffle is fixed to the spring sheet.

6. An electrical connector, characterized in that: It comprises an insulating body, a signal terminal, and a shielding plate as claimed in any one of claims 2 to 5, wherein the signal terminal and the shielding plate are both fixed to the insulating body, and the signal terminals are provided on both sides of the baffle.

7. The electrical connector according to claim 6, characterized in that: It also includes a grounding terminal, which is fixed to the insulating body and is located on the same side of the substrate as the spring sheet. The grounding terminal includes a fixed section, a connecting section and a bent section. The fixed section is fixed to the shielding plate, one end of the connecting section is connected to the fixed section, and the other end of the connecting section extends in a direction away from the shielding plate, one end of the bent section is connected to an end of the connecting section away from the fixed section, and the other end of the bent section extends in a direction close to the substrate. The connecting section and the bent section form a meshing area of ​​the grounding terminal, and along a direction perpendicular to the substrate, the spring sheet is located between the meshing area of ​​the substrate and the grounding terminal.

8. The electrical connector according to claim 7, characterized in that: The bending section and the connecting section transition into an arc to form a second abutting portion, and the second abutting portion is used to abut against an end of the elastic sheet away from the substrate.

9. The electrical connector according to claim 7, characterized in that: The grounding terminals correspond to the springs one by one, and the grounding terminals and the signal terminals are arranged in parallel and at intervals.

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