Metal shielding part, shielding assembly and high-speed high-density connector

Abstract

The utility model discloses a metal shielding part, a shielding assembly and a high-speed high-density connector, wherein the contact of the elastic spring sheet is located directly in front of the first convex bump, a grounding pin is arranged on the first cantilever, and a grounding pin is arranged on the second cantilever. The metal shielding parts are distributed in a matrix, and between two adjacent metal shielding parts, the first convex bump of the metal shielding part in front contacts the contact of the elastic spring sheet of the metal shielding part in the rear, and the contact of the elastic spring sheet of the metal shielding part in the front contacts the metal shielding plate, and the adjacent metal shielding parts do not contact each other. Between two adjacent metal shielding parts, the center line of the first cantilever of the metal shielding part on the left is in line with the center line of the second cantilever of the metal shielding part on the right. A shielding encirclement with only a small gap is formed between the two adjacent metal shielding parts, and there are six return points around the differential signal, thereby achieving good signal return, reducing the size of the connector, and improving the density of the connector.

Description

Technical Field

[0001] The utility model relates to a high-speed connector, in particular to a metal shielding piece, a shielding assembly and a high-speed and high-density connector. Background Art

[0002] High density and high speed are the development trends of high-speed connectors. However, the development of high-density and high-speed connectors will lead to increased interference between differential signal pairs. Although the current method of suppressing crosstalk between differential pairs has been gradually optimized with the increase in transmission rate, high-speed connectors with transmission rates of 56Gbps and above mostly use C-type or frame-type structures to shorten the return path and improve crosstalk. However, the conductive frame is generally made of polymer material and then metallized by electroplating. This method will cause metal powder and metal chips to appear when it is interfered with the metal shield, causing short circuit risks and incalculable losses. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a metal shielding piece, a shielding assembly and a high-speed and high-density connector.

[0004] The purpose of the utility model is achieved through the following technical solutions: a metal shielding part, comprising a main body with a U-shaped structure, the plug-in end of the main body having a plug-in end surface, the main body having a back plate, a left plate and a right plate, the plug-in end surface of the back plate is provided with a grounding pin, the back plate is provided with a first convex bump protruding outward, an elastic spring is provided on the side of the right plate away from the back plate, the elastic spring extends toward the left plate, and on the horizontal projection plane, the contact of the elastic spring is located directly in front of the first convex bump, a first notch is provided at the junction of the right plate and the back plate, a first cantilevered outwardly folded is provided on the rear end surface of the right plate near the first notch, a grounding pin is provided on the first cantilever, the center line of the first cantilever is parallel to the center line of the right plate, a second notch is provided on the upper end of the left plate, a second cantilevered outwardly folded is provided on the front end surface of the left plate near the second notch, the second cantilever has its own grounding pin, and the center line of the second cantilever is parallel to the center line of the left plate.

[0005] Optionally, a first connecting arm is provided at the bottom of the first cantilever, and the first connecting arm is connected to the right side plate at the first notch.

[0006] Optionally, a second connecting arm is provided at the bottom of the second cantilever, and the second connecting arm is connected to the left side plate at the second notch.

[0007] A shielding assembly includes a metal shielding plate and a metal shielding part. A grounding pin is also provided on the mating end surface of the metal shielding plate. There are multiple metal shielding parts, and the multiple metal shielding parts are distributed in a matrix. In the front-to-back direction, between two adjacent metal shielding parts, the first bulge of the front metal shielding part contacts the contact of the elastic spring of the rear metal shielding part, and the contact of the elastic spring of the frontmost metal shielding part contacts the metal shielding plate. In the left-to-right direction, adjacent metal shielding parts do not contact each other. Between two adjacent metal shielding parts, the center line of the first cantilever of the metal shielding part on the left is collinear with the center line of the second cantilever of the metal shielding part on the right.

[0008] Optionally, a second convex bump is provided on the rear side surface of the metal shielding plate, which contacts the elastic spring of the corresponding metal shielding component.

[0009] A high-speed, high-density connector includes a base and several signal pin groups, wherein the signal pin groups are mounted on the base in a matrix. A shielding assembly is mounted on the base, and the signal pin groups are located in a U-shaped structure corresponding to the metal shielding component.

[0010] Optionally, several signal jack groups are provided on the mounting platform of the base, and the several signal jack groups are distributed in a matrix, and the signal pin groups are installed in the corresponding signal jack groups. The base is also provided with U-shaped jacks corresponding to the signal jack groups, and the signal jack groups are semi-surrounded by the U-shaped jacks. Strip jacks are also provided on the mounting platform of the base, and the metal shielding plate of the shielding assembly is installed in the strip jacks.

[0011] Optionally, a first avoidance gap, a second avoidance gap and a third avoidance gap are provided at the opposite end of the U-shaped socket, the first cantilever of the metal shield is located in the first avoidance gap, the second cantilever of the metal shield is located in the second avoidance gap, and the elastic spring of the metal shield is located in the third avoidance gap.

[0012] Optionally, a fourth convex bump is provided on the back plate, the left plate and the right plate of the metal shielding component, and the fourth convex bump is in close contact with the hole wall of the U-shaped plug hole.

[0013] Optionally, the metal shielding plate has multiple spaced-apart plug-ins, a third gap is formed between two plug-ins, the plug-ins are inserted into the corresponding strip-shaped plug-ins, and a third bulge is provided on the plug-in plate, which is in close contact with the hole wall of the strip-shaped plug-in.

[0014] The utility model has the following advantages:

[0015] 1. The metal shield of the present invention is provided with a first cantilever and a second cantilever, and adjacent differential pairs share the ground pins on the first cantilever and the second cantilever, thereby ensuring signal return, reducing the size of the connector and improving the density of the connector.

[0016] 2. The shielding assembly of the present invention forms a shielding encirclement with only a small gap between two adjacent metal shielding parts by overlapping the metal shielding parts with elastic springs and convex hulls, and has six return points around the differential signal, thereby achieving good signal return.

[0017] 3. The high-speed and high-density connector of the present invention adopts metal shielding parts and metal shielding plates for overlapping grounding, so the connector does not need to use a conductive frame, which can further reduce the size of the connector. In addition, during the plugging process, no metal powder or metal chips will appear, and no short circuit risk will be caused, thereby improving the reliability of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a high-speed and high-density connector;

[0019] Figure 2 Schematic diagram of the base structure Figure 1 ;

[0020] Figure 3 Schematic diagram of the base structure Figure 2 ;

[0021] Figure 4 is a schematic diagram of the structure of the shielding component;

[0022] Figure 5 Schematic diagram of the structure of the metal shield Figure 1 ;

[0023] Figure 6 Schematic diagram of the structure of the metal shield Figure 2 ;

[0024] Figure 7 Schematic diagram of the structure of the metal shielding plate;

[0025] In the figure, 11-backplane, 12-left side plate, 13-right side plate, 14-mating end face, 15-grounding pin, 16-first convex bump, 17-elastic spring, 18-first cantilever, 19-second cantilever, 20-first connecting arm, 21-second connecting arm, 22-fourth convex bump, 100-metal shielding part, 200-metal shielding plate, 300-base, 400-differential signal pair, 201-plug board, 202-second convex bump, 203-third notch, 204-third convex bump, 101-signal jack group, 102-U-shaped jack, 103-strip jack, 104-first avoidance notch, 105-second avoidance notch, 106-third avoidance notch, 107-first limiting groove, 108-second limiting groove. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] like Figure 1 As shown, Figure 1 As shown, a high-speed and high-density connector includes a base 300, on which a plurality of differential signal pairs 400 are mounted. The plurality of differential signal pairs 400 are distributed in a matrix. The base 300 is also mounted with shielding components corresponding to the differential signal pairs 400. Figure 4 As shown, the shielding assembly includes a metal shielding plate 200 and a metal shielding member 100. Figure 5 and Figure 6 As shown, the metal shield 100 is a U-shaped structure. The plug-in end of the metal shield 100 has a plug-in end surface 14. The metal shield 100 has a back plate 11, a left plate 12 and a right plate 13. A grounding pin 15 is provided on the plug-in end surface 14 of the back plate 11. A first convex bump 16 protruding outward is provided on the back plate 11. An elastic spring 17 is provided on the side of the right plate 13 away from the back plate 11. The elastic spring 17 extends toward the left plate 12. In this embodiment, the base The base 300 has a U-shaped structure, and the bottom of the U-shaped groove of the base 300 serves as a mounting platform. A plurality of signal jack groups 101 are provided on the mounting platform. The plurality of signal jack groups 101 are arranged in a matrix, and the differential signal pairs 400 are installed in corresponding signal jack groups 101. In this embodiment, the differential signal pairs 400 are differential signal pins arranged in pairs. Therefore, the signal jack group 101 has two jacks, and the differential signal pairs 400 are installed side by side and spaced apart in the corresponding jacks.

[0033] In this embodiment, if Figure 2 and Figure 3 As shown, the base 300 is further provided with a U-shaped jack 102 corresponding to the signal jack group 101, and the signal jack group 101 is semi-surrounded by the U-shaped jack 102, that is, the left side, rear side and right side of the differential signal pair 400 are all surrounded by the metal shielding member 100. A strip jack 103 is also provided on the mounting platform of the base 300, and the metal shielding plate 200 of the shielding assembly is installed in the strip jack 103. When the shielding assembly and the differential signal pair 400 are both installed on the base 300, the shielding assembly can reduce the crosstalk of the differential signal pair 400 and realize signal backflow.

[0034] In this embodiment, on the horizontal projection plane, as Figure 5 and Figure 6As shown, the contact of the elastic spring 17 is located just in front of the first convex bump 16, a first notch is provided at the junction of the right side plate 13 and the back plate 11, a first cantilever 18 folded outward is provided on the rear end surface of the right side plate 13 near the first notch, a grounding pin 15 is provided on the first cantilever 18, and the center line of the first cantilever 18 is parallel to the center line of the right side plate 13, a second notch is provided on the upper end of the left side plate 12, a second cantilever 19 folded outward is provided on the front end surface of the left side plate 12 near the second notch, a grounding pin 15 is provided on the second cantilever 19, and the center line of the second cantilever 19 is parallel to the center line of the left side plate 12, and the metal shielding member 100 is distributed in a matrix, as shown in FIG. Figure 4 As shown, in the front-to-back direction, between two adjacent metal shields 100, the first convex bulge 16 of the front metal shield 100 contacts the contact of the elastic spring 17 of the rear metal shield 100, and the contact of the elastic spring 17 of the frontmost metal shield 100 contacts the metal shield plate 200. Therefore, when the metal shield 100 and the corresponding differential signal pair 400 are installed, the two adjacent metal shields 100 in the front-to-back direction form an encirclement similar to a rectangular structure, and the differential signal pair 400 is located within the encirclement. The encirclement only leaves a gap between the second cantilever 19 and the back plate 11 of the previous metal shield 100, thereby ensuring the shielding effect of the shielding assembly and reducing signal crosstalk. In addition, in the front-to-back direction, through the overlap of the elastic spring 17 and the convex bulge, all metal shields 100 can be conductive to the metal shield plate 200, thereby ensuring the grounding reliability of the entire shielding assembly.

[0035] In this embodiment, if Figure 4 As shown, in the left-right direction, adjacent metal shields 100 do not contact each other. Between two adjacent metal shields 100, the center line of the first cantilever 18 of the metal shield 100 on the left is collinear with the center line of the second cantilever 19 of the metal shield 100 on the right. Therefore, in the high-speed and high-density connector, adjacent differential pairs share the grounding pins 15 on the first cantilever 18 and the second cantilever 19 in the left-right direction, thereby ensuring that each differential pair has six grounding pins 15 around it, and the elastic spring 17 of the metal shield 100 is aligned with the first convex 17 of the adjacent metal shield 100 in front. 6 overlap, thereby realizing signal return. Due to the design of the shared ground pin 15, the signal return is ensured, the size of the connector can be reduced, and the density of the connector is improved. At the same time, since the metal shielding member 100 and the metal shielding plate 200 are used for overlap grounding, the connector does not need to use a conductive frame, which can further reduce the volume of the connector and make the connector miniaturized. Moreover, since there is no need to use a conductive frame, no metal powder or metal chips will appear during the plugging process, and no short circuit risk will be caused, thereby improving the reliability of the connector.

[0036] In this embodiment, if Figure 5 and Figure 6 As shown, a first connecting arm 20 is provided at the bottom of the first cantilever 18, and the first connecting arm 20 is connected to the right side plate 13 at the first notch, thereby improving the structural strength of the first cantilever 18, and making the grounding pin 15 on the first cantilever 18 less likely to be deformed and misplaced during the plugging process.

[0037] In this embodiment, if Figure 5 and Figure 6 As shown, a second connecting arm 21 is provided at the bottom of the second cantilever 19, and the second connecting arm 21 is connected to the left side plate 12 at the second notch, thereby improving the structural strength of the second cantilever 19, and making the grounding pin 15 on the second cantilever 19 less likely to be deformed and misplaced during the plugging process.

[0038] In this embodiment, if Figure 7 As shown, a second bulge 202 is provided on the rear side surface of the metal shielding plate 200, which contacts the elastic spring 17 of the corresponding metal shielding component 100. When the metal shielding plate 200 and the metal shielding component 100 are installed, the elastic spring 17 is in a compressed state, so the elastic spring 17 has an elastic restoring force, and the elastic spring 17 is always in contact with the bulge under the action of the elastic restoring force, thereby ensuring the overlap reliability between the metal shielding plate 200 and the metal shielding component 100.

[0039] In this embodiment, if Figure 2 and Figure 3 As shown, the mating end of the U-shaped socket 102 is provided with a first avoidance gap 104, a second avoidance gap 105 and a third avoidance gap 106, the first cantilever 18 of the metal shield 100 is located in the first avoidance gap 104, the second cantilever 19 of the metal shield 100 is located in the second avoidance gap 105, and the elastic spring 17 of the metal shield 100 is located in the third avoidance gap 106. By providing the avoidance gaps, the installation of the first cantilever 18, the second cantilever 19 and the elastic spring 17 is achieved, making the entire connector more compact.

[0040] In this embodiment, if Figure 5 and Figure 6 As shown, the back plate 11, the left plate 12 and the right plate 13 of the metal shield 100 are all provided with a fourth bulge 22, and the fourth bulge 22 is tightly attached to the hole wall of the U-shaped socket 102, thereby ensuring the reliability of the installation of the metal shield 100 and the base 300.

[0041] In this embodiment, if Figure 7As described above, the metal shielding plate 200 has a plurality of spaced-apart plug-in plates 201, a third notch 203 is formed between two plug-in plates 201, the plug-in plates 201 are inserted into the corresponding strip-shaped plug-in holes 103, and a third convex bump 204 is provided on the plug-in plates 201, the third convex bump 204 is in close contact with the hole wall of the strip-shaped plug-in hole 103, thereby ensuring the reliability of the installation of the metal shielding plate 200 and the base 300.

[0042] In this embodiment, if Figure 3 As shown, a first limiting groove 107 is provided on the side wall of the first avoidance gap 104, and the end of the first cantilever 18 is stuck in the first limiting groove 107. A second limiting groove 108 is provided on the side wall of the second avoidance gap 105, and the end of the second cantilever 19 is provided in the second limiting groove 108. Therefore, when the metal shielding part 100 and the base 300 are installed, the installation accuracy of the first cantilever 18 and the second cantilever 19 can be guaranteed, thereby ensuring the reliability of the grounding pin 15 on the cantilever during the plugging process.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A metal shielding member, comprising a body in a U-shaped structure, wherein the plug-in end of the body has a plug-in end surface, the body has a back plate, a left plate and a right plate, and a grounding pin is arranged on the plug-in end surface of the back plate, characterized in that: The back plate is provided with a first convex bump protruding outward, and an elastic spring is provided on the side of the right plate away from the back plate, and the elastic spring extends toward the left plate. On the horizontal projection plane, the contact of the elastic spring is located directly in front of the first convex bump, and a first notch is provided at the junction of the right plate and the back plate, and a first cantilever folded outward is provided on the rear end surface of the right plate close to the first notch, and a grounding pin is provided on the first cantilever, and the center line of the first cantilever is parallel to the center line of the right plate, and a second notch is provided on the upper end portion of the left plate, and a second cantilever folded outward is provided on the front end surface of the left plate close to the second notch, and a grounding pin is provided on the second cantilever, and the center line of the second cantilever is parallel to the center line of the left plate.

2. A metal shield according to claim 1, characterized in that: A first connecting arm is disposed at the bottom of the first cantilever, and the first connecting arm is connected to the right side plate at the first notch.

3. A metal shield according to claim 1, characterized in that: A second connecting arm is provided at the bottom of the second cantilever, and the second connecting arm is connected to the left side plate at the second notch.

4. A shielding assembly, characterized in that: It comprises a metal shielding plate and the metal shielding part as described in any one of claims 1 to 3, a grounding pin is also arranged on the mating end surface of the metal shielding plate, there are multiple metal shielding parts, and the multiple metal shielding parts are distributed in a matrix, in the front-to-back direction, between two adjacent metal shielding parts, the first bulge of the front metal shielding part contacts with the contact of the elastic spring leaf of the rear metal shielding part, and the contact of the elastic spring leaf of the frontmost metal shielding part contacts with the metal shielding plate, in the left-to-right direction, there is no contact between adjacent metal shielding parts, and between two adjacent metal shielding parts, the center line of the first cantilever of the metal shielding part on the left is collinear with the center line of the second cantilever of the metal shielding part on the right.

5. A shielding assembly according to claim 4, characterized in that: A second convex bump is arranged on the rear side surface of the metal shielding plate and contacts with the elastic spring sheet corresponding to the metal shielding member.

6. A high-speed and high-density connector, comprising a base and a plurality of signal pin groups, wherein the plurality of signal pin groups are mounted on the base in a matrix, characterized in that: The shielding assembly according to claim 4 or 5 is installed on the base, and the signal pin group is located in the U-shaped structure corresponding to the metal shielding component.

7. A high-speed and high-density connector according to claim 6, characterized in that: A plurality of signal jack groups are provided on the mounting platform of the base, and the plurality of signal jack groups are distributed in a matrix, and the signal pin groups are installed in the corresponding signal jack groups. A U-shaped jack corresponding to the signal jack group is also provided on the base, and the signal jack group is half-surrounded by the U-shaped jack. A strip jack is also provided on the mounting platform of the base, and the metal shielding plate of the shielding assembly is installed in the strip jack.

8. The high-speed and high-density connector according to claim 7, characterized in that: The U-shaped socket has a first avoidance gap, a second avoidance gap and a third avoidance gap at the opposite end. The first cantilever of the metal shield is located in the first avoidance gap, the second cantilever of the metal shield is located in the second avoidance gap, and the elastic spring leaf of the metal shield is located in the third avoidance gap.

9. A high-speed and high-density connector according to claim 8, characterized in that: The back plate, the left plate and the right plate of the metal shield are all provided with fourth convex bumps, and the fourth convex bumps are in close contact with the hole wall of the U-shaped plug hole.

10. The high-speed and high-density connector according to claim 9, characterized in that: The metal shielding plate has a plurality of plug-in plates arranged at intervals, a third gap is formed between two of the plug-in plates, the plug-in plates are inserted into corresponding strip-shaped plug-in holes, and a third convex bump is arranged on the plug-in plates, and the third convex bump is in close contact with the hole wall of the strip-shaped plug-in hole.

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