Terminal group

Abstract

The utility model discloses a terminal group, comprising a plurality of grounding terminals which are arranged at intervals along a first direction, each grounding terminal comprises a grounding contact segment and a grounding fixed segment which are arranged in sequence, and the grounding fixed segment is provided with at least one grounding area; the insulator comprises a first surface and a second surface, and the insulator is provided with a hollow area exposing the grounding area; the conductive shielding plate is arranged on the first surface and is provided with a first boss area embedded into the hollow area; the grounding strip is arranged on the second surface and is provided with a second boss area embedded into the hollow area; the second boss area comprises at least one second gap boss area, and the second gap boss area extends to the end, close to the grounding contact section, of the grounding strip. According to the invention, the contact stability between the conductive shielding plate and each grounding terminal and between the grounding strip and each grounding terminal is effectively ensured, the unified grounding effect of the terminal group is ensured, the transmission speed and the space utilization rate are improved, the production is facilitated, and the signal strength is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of connector, specifically about a terminal group. BACKGROUND

[0002] In order to realize the overall grounding of the grounding terminals of the connector and ensure the grounding effect, the terminal group is generally provided with a grounding assembly that is in contact with each grounding terminal. At present, the grounding assembly is generally fixed with the grounding terminal by means of a buckle. The grounding terminal is provided with a matching socket, and the grounding assembly is provided with a buckle that matches the socket. The buckle and the socket are in interference fit to realize contact connection. This fixing mode cannot guarantee the contact stability and the fixing firmness of the grounding assembly and each grounding terminal, has certain influence on the transmission speed, and each grounding terminal needs to be arranged with a socket. The grounding assembly also needs to be arranged with a one-to-one corresponding buckle structure, so the production cost is high, the steps are complicated, and the yield is low. SUMMARY

[0003] The purpose of the present application is to provide a terminal group to solve the technical problems that the grounding assembly and the grounding terminal cannot guarantee the contact stability and the fixing firmness by means of a buckle in the prior art, each grounding terminal needs to be arranged with a socket, and the grounding assembly needs to be arranged with a one-to-one corresponding buckle structure, so the production cost is high, the steps are complicated, and the yield is low.

[0004] In order to achieve the above-mentioned purpose, the present application provides a terminal group, which comprises:

[0005] A plurality of grounding terminals are arranged at intervals along a first direction. Each grounding terminal comprises a grounding contact section and a grounding fixed section arranged in sequence. The grounding fixed section of each grounding terminal is provided with at least one grounding area.

[0006] An insulator is fixed inside the grounding fixed section. The insulator comprises a first surface and a second surface arranged oppositely. The insulator is provided with a hollow area that exposes the grounding area.

[0007] A conductive shielding plate is arranged on the first surface. One side of the conductive shielding plate facing the first surface is provided with a plurality of first boss areas embedded in the hollow area. The first boss area is arranged in close contact with the corresponding grounding area.

[0008] A grounding strip is arranged on the second surface and extends along the first direction. The grounding strip is provided with a plurality of second boss areas embedded in the hollow area. The second boss area is arranged in close contact with the corresponding grounding area.

[0009] Among them, the plurality of second boss areas comprises at least one second notch boss area, and the second notch boss area extends to one end of the grounding strip close to the grounding contact section.

[0010] In one or more embodiments, at least one of the grounding strips of each of the grounding terminals is arranged at an end of the grounding fixed section close to the grounding contact section, the grounding strip is arranged at an end of the second surface close to the grounding contact section, and the grounding strip comprises at least one grounding protrusion arranged at an end of the grounding contact section, the grounding protrusion is located at a projection of the grounding terminal on the grounding strip, and the grounding protrusion is arranged protruding in a direction pointing to the grounding contact section.

[0011] In one or more embodiments, the grounding protrusion corresponds to one of the second boss regions, at least part of the second boss region is arranged at the corresponding grounding protrusion, and the second notch boss region extends to the corresponding grounding protrusion close to an end of the grounding contact section.

[0012] In one or more embodiments, the plurality of first boss regions comprises at least one first notch boss region, and the first notch boss region extends to an end of the conductive shielding plate close to the grounding contact section.

[0013] In one or more embodiments, the conductive shielding plate comprises at least one shielding protrusion arranged at an end of the conductive shielding plate close to the grounding contact section, the shielding protrusion is located at a projection of the grounding terminal on the conductive shielding plate, and the shielding protrusion is arranged protruding in a direction pointing to the grounding contact section.

[0014] The shielding protrusion corresponds to one of the first boss regions, at least part of the first boss region is arranged at the corresponding shielding protrusion, and the first notch boss region extends to the corresponding shielding protrusion close to an end of the grounding contact section.

[0015] In one or more embodiments, the first notch boss region is half-hemispherical, square, notched circular, or notched elliptical.

[0016] In one or more embodiments, the first notch boss region is arranged at a first direction end of the conductive shielding plate.

[0017] In one or more embodiments, the insulator comprises a protrusion arranged at a side of an end of the grounding contact section, the protrusion is arranged extending outward in the first direction, at least part of the grounding fixed section of each of the grounding terminals is held inside the protrusion, at least one of the first notch boss regions is arranged at a corresponding position of the conductive shielding plate and the protrusion, and at least one of the second notch boss regions is arranged at a corresponding position of the grounding strip and the protrusion.

[0018] In one or more embodiments, the first notch boss area is semi-waist-shaped, square, notched circular, or notched elliptical.

[0019] In one or more embodiments, the first notch boss area is arranged at the first direction end of the grounding strip.

[0020] In one or more embodiments, the first boss area and / or the second boss area are welded with the grounding area.

[0021] In one or more embodiments, a fixing column is arranged on the first surface and / or the second surface of the insulator, and a fixing hole matching the fixing column is arranged on the conductive shielding plate and / or the grounding strip.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] The conductive shielding plate, the grounding terminal, and the grounding strip of the application are tightly welded and fixed to realize a sandwich structure with stable connection, which can effectively ensure the contact stability of the conductive shielding plate and the grounding strip with each grounding terminal, ensure the unified grounding effect of the terminal group, and help improve the transmission speed.

[0024] The boss area of the conductive shielding plate and the grounding strip for contacting the grounding terminal extends to the end to form a notched non-closed structure, which effectively improves the space utilization, is beneficial to production, and helps improve the signal strength. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a structural schematic diagram of an embodiment of the terminal group of the application;

[0027] Figure 2 is a structural schematic diagram of an embodiment of the terminal of the terminal group of the application;

[0028] Figure 3 is a structural schematic diagram of an embodiment of the first surface of the insulator of the application;

[0029] Figure 4 is a structural schematic diagram of an embodiment of the conductive shielding plate of the application;

[0030] Figure 5is another perspective structural schematic view of the terminal group embodiment of the application;

[0031] Figure 6 is a structural schematic view of the second surface of the insulator embodiment of the application;

[0032] Figure 7 is a structural schematic view of the grounding strip embodiment of the application;

[0033] Figure 8 is a structural schematic view of the assembly of the insulator and the grounding strip in another terminal group embodiment of the application. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions in the application, the technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the application.

[0035] The first direction and the docking direction defined in the application are both subject to Figure 1 , wherein Figure 1 the X direction shown in the figure is the first direction, and the Z direction perpendicular to the X direction is the docking direction.

[0036] In order to ensure the isolation between adjacent terminal groups of the connector and the unified grounding of the grounding terminals in the terminal group, a shielding plate is currently arranged on one side surface of the terminal group, and the shielding plate is in contact with each grounding terminal to achieve unified grounding.

[0037] The shielding plate of the conventional connector is connected with the grounding terminal in a buckle manner, wherein a buckle towards the grounding terminal is arranged on the shielding plate, and a corresponding buckle hole is arranged on the grounding terminal, and the buckle and the buckle hole are in interference fit to achieve contact connection. This fixing manner cannot guarantee the contact stability and the fixing firmness of the grounding assembly and each grounding terminal, and has certain influence on the transmission speed; meanwhile, a buckle hole needs to be arranged on each grounding terminal, and the grounding assembly also needs to be arranged with a one-to-one corresponding buckle structure, which is high in production cost, complicated in steps, and low in yield.

[0038] In order to solve the above problems, the applicant provides a novel terminal group which can guarantee the stable contact of each grounding terminal and the grounding assembly, the fixing firmness of the grounding assembly, and thus the stability of the transmission speed, up to 56G high-speed transmission.

[0039] Specifically, please refer to Figure 1 and Figure 2 , Figure 1is a structural schematic view of an embodiment of a terminal group of the present application, Figure 2 is a structural schematic view of an embodiment of a terminal of a terminal group of the present application.

[0040] As shown in Figure 1 and Figure 2 , the terminal group comprises a plurality of terminals 100 arranged at intervals along a first direction x.

[0041] Among them, the plurality of terminals 100 comprises a plurality of ground terminals 1000 and a plurality of signal terminals 2000, the ground terminal 1000 comprises a ground contact section 101a, a ground fixed section 102a and a ground mounting section 103a connected in sequence. The signal terminal 2000 comprises a signal contact section 101A, a signal fixed section 102A and a signal mounting section 103A connected in sequence.

[0042] In an embodiment, a pair of signal terminals 2000 is arranged between adjacent ground terminals 1000, and the pair of signal terminals 2000 forms a signal pair. In other embodiments, the number of terminals in a signal pair can be adjusted based on actual conditions, and a ground terminal 1000 is arranged between adjacent signal pairs, and the effects of the embodiment can be achieved.

[0043] The terminal group 10 further comprises an insulator 200, the ground fixed section 102a of the ground terminal 1000 and the signal fixed section 102A of the signal terminal 2000 are held in the insulator 200, and the insulator 200 comprises a first surface 201 and a second surface 202 (not shown in the figure) arranged opposite to each other.

[0044] In order to realize shielding between adjacent terminal groups 10 while ensuring signal interference shielding effect, the first surface 201 is further provided with a conductive shielding plate 300, which can be electrically connected with each ground terminal 1000, thereby realizing unified grounding.

[0045] The connection mode of the conductive shielding plate 300 and the ground terminal 1000 will be described in detail below, please refer to Figure 1 、 Figure 3 and Figure 4 , Figure 3 is a structural schematic view of an embodiment of a first surface of an insulator of the present application, Figure 4 is a structural schematic view of an embodiment of a conductive shielding plate of the present application.

[0046] As shown in Figure 1 、 Figure 3 and Figure 4As shown, the grounding terminal 1000 is provided with a grounding area 1001 on the grounding fixing section 102a, and the insulator 200 is provided with a hollow area 2001 exposing the grounding area 1001. Correspondingly, the conductive shielding plate 300 is provided with a first boss area 301 embedded in each hollow area 2001 on the side facing the first surface 201.

[0047] The first boss area 301 and the corresponding grounding area 1001 are tightly fixed, thereby realizing the stable connection between the conductive shielding plate 300a and each grounding terminal 1000.

[0048] Specifically, the conductive shielding plate 300 can be fixed with the grounding terminal 1000 through laser welding. In order to facilitate the laser welding operation, the side of the conductive shielding plate 300 away from the first surface 201 is also provided with a first recess area 302 corresponding to the first boss area 301 one by one, so that the position of the first boss area 301 can be calibrated during processing.

[0049] It can be understood that when fixing the conductive shielding plate 300, the first boss area 301 can be embedded in the corresponding hollow area 2001 first, and then laser welding is performed on the bottom surface of the first recess area 302, thereby realizing the fixation of the first boss area 301 and the grounding area 1001.

[0050] Further, in order to optimize the layout of the first boss area 301, improve the space utilization rate, and improve the signal, in the embodiment, the two first boss areas 301 at the end of the first direction x are of a non-closed structure, which extend to the end of the conductive shielding plate 300 close to the grounding contact section 101a, and the two first boss areas 301 are named as first notched boss areas 301a; the remaining first boss areas 301 are of a closed structure. Based on this design, the space of the terminal group and the end of the first direction of the conductive shielding plate can be saved, which is beneficial to production and improves the signal at the same time.

[0051] Of course, in other embodiments, the first notched boss area 301a can also not be arranged at the end of the first direction x, and the position and number thereof can be adjusted based on actual needs to reduce the space occupation in a specific area and improve the signal.

[0052] In the embodiment, the two first notched boss areas 301a are of a square structure with one end open, and in other embodiments, the structure thereof can be adjusted based on actual needs, for example, the first notched boss area 301a can also be a half-waist-shaped, notched circular, or notched elliptical structure, etc., all of which can realize the effect of the embodiment. In the embodiment, the first boss areas 301 except the first notched boss areas 301a are of a closed circular structure, and in other embodiments, they can also be adjusted to be square, waist-shaped, elliptical, etc., which can realize the tight contact between the first boss area 301 and the grounding area 1001, and all of which can realize the effect of the embodiment.

[0053] In this embodiment, in order to optimize the structure of the insulator 200 and maximize the size saving, the insulator 200 comprises a protrusion 203 arranged near one end side of the grounding contact section 101a, and a portion of the grounding fixing section 102a of one grounding terminal 1000 is fixed by the protrusion 203. In order to arrange the soldering points in the space-efficient protrusion 203, in this embodiment, a first notch boss area 301a is arranged at the position corresponding to the protrusion 203 of the conductive shielding plate 300.

[0054] Further, in order to improve the signal transmission speed, the conductive shielding plate 300 is provided with a plurality of shielding protrusions 303 near one side of the grounding contact section 101a, and each shielding protrusion 303 is located at the orthographic projection of the grounding terminal 1000 on the conductive shielding plate 300.

[0055] In one embodiment, the extension length of the shielding protrusion 303 in the mating direction Z can be 0.2-2.2 mm, and the spacing between adjacent shielding protrusions 303 can be 0.5-2.5 mm, so that the height transmission rate reaches 56G.

[0056] In order to optimize the layout, the first boss area 301 in this embodiment can be arranged one-to-one with the shielding protrusions 303, at least a portion of each first boss area 301 is arranged at the corresponding shielding protrusion 303, and the first notch boss area 301a extends to the corresponding shielding protrusion 303 near one end of the grounding contact section 101a.

[0057] In order to further realize the common grounding of each grounding terminal 1000 in the terminal set 10, in another embodiment, the terminal set 10 further comprises a grounding strip 500. Please refer to Figure 5 、 Figure 6 and Figure 7 , Figure 5 is another perspective view of the structure of an embodiment of the terminal set of the present application, Figure 6 is a structural schematic view of a second surface of an embodiment of the insulator of the present application, Figure 7 is a structural schematic view of an embodiment of the grounding strip of the present application.

[0058] As Figure 5 to 7 shown, the grounding strip 500 can be arranged on the second surface 202 extending in the first direction x, which can cover each hollow area 2001.

[0059] The side of the grounding strip 500 facing the second surface 202 can be provided with a second boss area 501 embedded in each hollow area 2001, and the second boss area 501 can be tightly fixed with the corresponding grounding area 1001, so as to realize the stable connection between the grounding strip 500 and each grounding terminal 1000.

[0060] Specifically, the second boss area 501 can be fixed with the grounding area 1001 by laser welding. In order to facilitate the operation of laser welding, the side of the grounding strip 500 away from the second surface 202 can be provided with a second recess area 502 corresponding to the second boss area 501 to mark the position of the second boss area 501.

[0061] It can be understood that when the grounding strip 500 is installed, the second boss area 501 can be first embedded in the corresponding hollow area 2001, and then laser welding is performed on the bottom surface of the second recess area 502, thereby realizing the fixation of the second boss area 501 and the grounding area 1001.

[0062] The grounding terminal 1000 is laser welded and fixed on both sides of the conductive shielding plate 300 and the grounding strip 500, forming a sandwich structure, which can effectively ensure the contact stability of the conductive shielding plate 300 and the grounding strip 500 with each grounding terminal 1000, ensure the unified grounding effect of the terminal group, and help improve the transmission speed.

[0063] Further, in order to optimize the layout of the second boss area 501, improve the space utilization rate, and improve the signal, in the embodiment, one second boss area 501 at the end of the first direction x is of a non-closed structure, which extends to the end of the grounding strip 500 close to the grounding contact section 101a, and the second boss area 501 is named as the second notched boss area 501a; the rest of the second boss areas 501 are of a closed structure. Based on this design, the space of the terminal group and the first direction end of the grounding strip can be saved, which is beneficial to production, and at the same time, the signal is improved.

[0064] Of course, in other embodiments, the second notched boss area 501a can also not be arranged at the end of the first direction x, and the position and number thereof can be adjusted based on actual needs to reduce the space occupation of a specific area and improve the signal.

[0065] Similar to the first boss area 301 and the first notched boss area 301a, the shape of the second boss area 501 and the second notched boss area 501a is not limited. The second boss area 501 can be circular, square, waist-shaped, oval, etc., and the second notched boss area 501 can be square, half-waist-shaped, notched circular, or notched oval, etc., all of which can realize the effect of the embodiment.

[0066] In order to arrange the welding points in the space-efficient protruding part 203, in the embodiment, the second notched boss area 501a is arranged at the position corresponding to the protruding part 203 of the grounding strip 500.

[0067] Further, in order to improve the signal transmission speed, the grounding strip 500 is further provided with a plurality of grounding protrusions 503 near the side of the grounding contact section 101a, and the grounding protrusions 503 are located at the orthographic projection of the grounding terminal 1000 on the grounding strip 500. The grounding protrusions 503 extend from the side of the grounding strip 500 in the direction of the grounding contact section 101a.

[0068] In one embodiment, the extension length of the grounding protrusions 503 in the mating direction Z can be 0.2-1.2 mm, and the spacing between adjacent grounding protrusions 503 can be 1.5-3.5 mm, so that the height transmission rate reaches 56G.

[0069] In order to optimize the layout, the second boss area 501 in the embodiment can be provided one-to-one with the grounding protrusions 503, and at least part of each second boss area 501 is arranged at the corresponding grounding protrusion 503, and the second gap boss area 501a extends to the end of the corresponding grounding protrusion 503 near the grounding contact section 101a.

[0070] In order to further improve the positioning accuracy and fixing firmness of the grounding strip 500, and facilitate the assembly of the grounding strip 500, please refer to Figure 8 , Figure 8 is a schematic view of the assembly structure of the insulator and the grounding strip in another embodiment of the terminal group of the application.

[0071] As Figure 8 shown, the second surface 202 of the insulator 200 is provided with a fixing column 204, and the grounding strip 500 is arranged with a fixing hole 504 matched with the fixing column 204.

[0072] The fixing column 204 penetrates through the fixing hole 504 of the grounding strip 500, thereby reinforcing the connection stability of the insulator 200a and the grounding strip 500.

[0073] In the embodiment, the fixing hole 504 is arranged at both ends of the grounding strip 500, and in other embodiments, the position and number of the fixing hole 504 can also be adjusted based on actual needs, which can achieve the effect of the embodiment.

[0074] It should be noted that in each of the above embodiments, in order to improve the fixing stability of the conductive shielding plate 300 and facilitate the arrangement of the grounding strip 500, the grounding area 1001 of the grounding terminal 1000 is arranged at the end of the grounding fixed section 102a near the grounding contact section 101a, thereby fixing the end of the conductive shielding plate 300, and correspondingly, the grounding strip 500 is arranged at the end of the second surface 202 near the grounding contact section 101a. In other embodiments, the grounding area 1001 can also be arranged at other positions of the grounding terminal 1000, which can be adjusted and designed based on the working conditions, and can achieve the effect of the embodiment.

[0075] The above embodiment only shows one welding fixing mode between the conductive shielding plate 300, the grounding terminal 1000 and the grounding strip 500, in other embodiments, welding fixing mode can not be used, for example, the conductive shielding plate 300, the grounding terminal 1000 and the grounding strip 500 can also be fixed by conductive glue, which can also achieve the purpose of stable connection; or other welding fixing mode can be used, for example, the three can be stably fixed by adding welding parts.

[0076] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0077] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A terminal assembly, characterized in that, include: A plurality of grounding terminals are arranged at intervals along a first direction. Each grounding terminal includes a grounding contact section and a grounding fixing section arranged in sequence. Each grounding terminal has at least one grounding area on the grounding fixing section. An insulator, wherein the grounding fixing section is fixed inside the insulator, the insulator includes a first surface and a second surface arranged opposite to each other, and the insulator has a hollow area that exposes the grounding area; A conductive shielding plate is arranged on the first surface. The side of the conductive shielding plate facing the first surface has a plurality of first protrusion areas embedded in the hollow area. The first protrusion areas are tightly fitted with the corresponding contact areas. A grounding bar is arranged on the second surface extending along the first direction. The grounding bar is provided with a plurality of second protrusion areas embedded in the hollow area. The second protrusion areas are closely fitted to the corresponding grounding areas. The plurality of second protrusion areas include at least one second notched protrusion area, which extends to one end of the grounding bar near the grounding contact section.

2. The terminal assembly according to claim 1, characterized in that, At least one of the grounding areas of each of the grounding terminals is arranged at the end of the grounding fixing section near the grounding contact section. The grounding bar is arranged on the second surface near one end of the grounding contact section, and the grounding bar includes at least one grounding protrusion arranged near one end of the grounding contact section. The grounding protrusion is located at the orthographic projection of the grounding terminal on the grounding bar, and the grounding protrusion protrudes in a direction pointing towards the grounding contact section.

3. The terminal assembly according to claim 2, characterized in that, The grounding protrusion corresponds one-to-one with the second protrusion area. At least a portion of the second protrusion area is arranged at the corresponding grounding protrusion. The second notch protrusion area extends to the end of the corresponding grounding protrusion near the grounding contact section.

4. The terminal assembly according to claim 1, characterized in that, The plurality of first protrusion areas include at least one first notch protrusion area, the first notch protrusion area extending to one end of the conductive shielding plate near the grounding contact section.

5. The terminal assembly according to claim 4, characterized in that, The conductive shielding plate includes at least one shielding protrusion disposed near one end of the grounding contact section. The shielding protrusion is located at the orthographic projection of the grounding terminal on the conductive shielding plate, and the shielding protrusion protrudes in a direction pointing towards the grounding contact section. The shielding protrusions correspond one-to-one with the first protrusion areas. At least a portion of the first protrusion area is arranged at the corresponding shielding protrusion. The first notch protrusion area extends to the end of the corresponding shielding protrusion near the grounding contact section.

6. The terminal assembly according to claim 5, characterized in that, The first notched protrusion area is semi-circular, square, circular with a notch, or elliptical with a notch; and / or, The first notch protrusion area is arranged at the first direction end of the conductive shielding plate.

7. The terminal assembly according to claim 5, characterized in that, The insulator includes a protrusion disposed on one side near one end of the grounding contact section, the protrusion extending outward along the first direction, at least a portion of the grounding fixing section of a grounding terminal being fixed inside the protrusion, at least one first notch protrusion area disposed on the conductive shielding plate at a position corresponding to the protrusion, and at least one second notch protrusion area disposed on the grounding bar at a position corresponding to the protrusion.

8. The terminal assembly according to claim 4, characterized in that, The first notched protrusion area is semi-circular, square, circular with a notch, or elliptical with a notch; and / or, The first notch protrusion area is arranged at the first directional end of the grounding bar.

9. The terminal assembly according to claim 1, characterized in that, The first boss area and / or the second boss area are welded and fixed to the contact area.

10. The terminal assembly according to claim 1, characterized in that, Fixed posts are arranged on the first surface and / or the second surface of the insulator, and fixed holes matching the fixed posts are arranged on the conductive shielding plate and / or the grounding bar.

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