High-frequency connector

Abstract

The utility model discloses a high-frequency connector. The high-frequency connector comprises a metal shell; the insulating shell is arranged in the metal shell, and a plugging cavity is formed in the insulating shell; the mounting strip is inserted into the rear end of the insertion cavity; the terminal strip is inserted into the mounting strip and extends to the front end of the insertion cavity, the terminal strip comprises two rows of terminals which are oppositely arranged, and each row of terminals comprises a grounding terminal and a signal terminal; the grounding sheets are arranged on the inner sides of the terminals in each row, convex parts and concave parts are arranged on the grounding sheets, the convex parts of the grounding sheets on the inner sides of the terminals in each row are arranged corresponding to the grounding terminals in the terminals in the row, and the convex parts are in contact with the grounding terminals; and the concave part of the grounding piece on the inner side of each row of terminals is arranged corresponding to the signal terminal in the row of terminals, and the concave part is separated from the signal terminal. And the inner side of each row of terminals is provided with a grounding sheet, so that resonance between the differential signal terminals can be reduced, and external electromagnetic and noise interference can be resisted. The convex part and the concave part are designed on the grounding piece, so that the grounding piece can be conveniently connected to the grounding terminal and can be conveniently kept away from the signal terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a high-frequency connector. BACKGROUND

[0002] With the development of high frequency and high speed, the network transmission speed is getting higher and higher, and the high-frequency connector needs to support higher bandwidth and faster transmission speed. In some communication equipment, such as servers, AI intelligence, communication equipment, automotive electronics, etc., high-frequency signal transmission is required, which requires the high-frequency connector to have higher working frequency and signal transmission capability.

[0003] With the rapid development of 5G electronic industry, computers more and more need to have card edge connector capable of high-speed signal transmission. The card edge connector generally has a plurality of ground terminals and a plurality of pairs of differential signal terminals for transmitting differential signals. The ground terminals and the differential signal terminals are arranged in a row, and there are two rows of terminals opposite to each other. However, in the prior art, when the electronic card is inserted into the card edge connector, the conductive terminals are prone to crosstalk resonance problems, which will affect the quality and reliability of the high-frequency high-speed signal transmission of the card edge connector. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a high-frequency connector to solve the problems of the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A high-frequency connector, comprising:

[0007] A metal shell;

[0008] An insulating shell is arranged in the metal shell, and a plug-in cavity is arranged on the insulating shell;

[0009] A mounting strip is inserted into the rear end of the plug-in cavity;

[0010] A terminal row is inserted into the mounting strip and extends to the front end of the plug-in cavity. The terminal row includes two rows of terminals arranged opposite to each other, and each row of terminals includes a ground terminal and a signal terminal;

[0011] A grounding sheet is arranged on the inner side of each row of terminals, and the grounding sheet is provided with a convex portion and a concave portion. The convex portion of the grounding sheet on the inner side of each row of terminals is arranged correspondingly with the ground terminal in the row of terminals, and the convex portion is in contact with the ground terminal. The concave portion of the grounding sheet on the inner side of each row of terminals is arranged correspondingly with the signal terminal in the row of terminals, and the concave portion is separated from the signal terminal.

[0012] In some embodiments, the convex portion and the concave portion are arranged alternately.

[0013] In some embodiments, the grounding sheet is wavy.

[0014] In some embodiments, the mounting strip comprises a first mounting strip and a second mounting strip arranged oppositely, and the two rows of terminals arranged oppositely are a first row of terminals and a second row of terminals, the first row of terminals and the second row of terminals are respectively inserted on the first mounting strip and the second mounting strip, and each row of terminals extends to the front end of the plug-in cavity.

[0015] In some embodiments, each mounting strip comprises two side walls arranged oppositely along the plug-in direction, and a connecting portion connected between the two side walls, and each of the two side walls is provided with a plug hole, and the terminals of the terminal row are inserted in the plug hole.

[0016] In some embodiments, the grounding sheet is arranged between the two side walls.

[0017] In some embodiments, the inner side of the connecting portion is provided with a plug slot, and the two ends of the plug slot are respectively communicated with the plug holes on the two side walls.

[0018] In some embodiments, the side wall is provided with a plurality of clamping heads, and the plurality of clamping heads are arranged at intervals along the length direction of the mounting strip, and a clamping slot is formed between adjacent clamping heads.

[0019] The clamping head on one of the first mounting strip and the second mounting strip is clamped into the clamping slot on the other one, so as to connect the first mounting strip and the second mounting strip.

[0020] In some embodiments, the convex portion is welded with the grounding terminal.

[0021] In some embodiments, the welding is laser welding.

[0022] The application has the advantages that:

[0023] The high-frequency connector of the application is provided with a grounding sheet on the inner side of the terminal row, which can reduce the resonance between the differential signal terminals, resist external electromagnetic and noise interference, improve the high-frequency signal transmission quality and performance reliability, and improve the high-frequency effect of the high-frequency connector. The convex portion and the concave portion are designed on the grounding sheet, which facilitates the connection of the grounding sheet to the grounding terminal, and facilitates the grounding sheet to avoid the signal terminal, and is convenient to install, stable in contact, and high in reliability. The grounding sheet is arranged on the inner side of each row of terminals, so that the spacing space between the two rows of terminals can be used to install the grounding sheet, without increasing the thickness of the connector. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the high-frequency connector in the embodiments of this application;

[0026] Figure 2 This is an exploded view of the high-frequency connector in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the high-frequency connector in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of another cross-sectional structure of the high-frequency connector in an embodiment of this application;

[0029] Figure 5 for Figure 1 A structural schematic diagram from another perspective of the structure shown;

[0030] Figure 6 This is a schematic cross-sectional view of the assembly of the terminal block, mounting strip, and grounding plate in an embodiment of this application.

[0031] Figure 7 This is a schematic diagram showing the exploded structure of the terminal block, mounting strip, and grounding plate in an embodiment of this application;

[0032] Figure 8 for Figure 7 A structural diagram showing a further breakdown of the structure shown;

[0033] Figure 9 This is a schematic diagram of the assembly of the terminal block, mounting strip, and grounding plate in an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the grounding plate structure in an embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the fastening structure between the first mounting strip and the second mounting strip in an embodiment of this application;

[0036] Figure 12 This is a schematic diagram of the structure in an embodiment of this application where the first mounting strip and the second mounting strip are separated.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 10. High-frequency connectors;

[0039] 100. Metal casing;

[0040] 200. Insulating housing; 201. Plug-in cavity;

[0041] 300, Mounting strip; 310, First mounting strip; 320, Second mounting strip; 301, Side wall; 3011, Insertion hole; 3012, Clip head; 3013, Slot; 302, Connecting part; 3021, Slot;

[0042] 400 Terminal block; 410 First row of terminals; 420 Second row of terminals; 401 Grounding terminal; 402 Signal terminal;

[0043] 500, grounding piece; 501, convex part; 502, concave part; 510, first grounding piece; 520, second grounding piece. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] This application provides a high-frequency connector. For example... Figures 1 to 3 As shown, the high-frequency connector 10 of this embodiment includes a metal housing 100, an insulating housing 200, a mounting strip 300, a terminal block 400, and a grounding plate 500. The insulating housing 200 is disposed within the metal housing 100. A mating cavity 201 is provided on the insulating housing 200. The mounting strip 300 is inserted into the rear end of the mating cavity 201.

[0046] like Figure 2 As shown, the terminal block 400 includes two rows of terminals arranged opposite each other, namely a first row of terminals 410 and a second row of terminals 420, which are arranged vertically opposite each other. Here, "vertically opposite each other" means that they are arranged opposite each other along the thickness direction of the connector (the Z direction shown in the attached figure). Figure 2 As shown, the terminal block 400 is inserted into the mounting strip 300, and as... Figure 3 As shown, the terminals in the terminal block 400 extend to the front end of the mating cavity 201, allowing the mating connector to contact the terminals after being inserted into the mating cavity 201. Each row of terminals includes several terminals arranged in a row, such as... Figure 4 As shown, the terminals include a ground terminal 401 and a signal terminal 402.

[0047] like Figure 4As shown, the grounding plate 500 is disposed on the inner side of each row of terminals (first row of terminals 410 and second row of terminals 420). Here, "inner side" refers to the side of each row of terminals that is closer to the other row of terminals, and the side of each row of terminals that is farther away from the other row of terminals is the outer side. Figure 10 The general structure of the grounding plate 500 is shown, as follows: Figure 10 As shown, the grounding plate 500 is provided with a protrusion 501 and a recess 502. For example... Figure 4 As shown, the protrusion 501 of the grounding plate 500 on the inner side of each row of terminals corresponds to the grounding terminal 401 in that row of terminals, and the protrusion 501 contacts the grounding terminal 401, thereby electrically connecting the grounding plate 500 and the grounding terminal 401, which serves as a shield, reduces resonance between the differential signal terminals 402, and resists external electromagnetic and noise interference. The recess 502 of the grounding plate 500 on the inner side of each row of terminals corresponds to the signal terminal 402 in that row of terminals, and the recess 502 is separated from the signal terminal 402, thereby allowing the grounding plate 500 to avoid the signal terminal 402, preventing the grounding plate 500 from interfering with the signal terminal 402, and ensuring that the grounding plate 500 only contacts the grounding terminal 401.

[0048] The design of the protrusion 501 and the recess 502 on the grounding plate 500 facilitates the connection of the grounding plate 500 to the grounding terminal 401 and makes it easy for the grounding plate 500 to avoid the signal terminal 402. It is also convenient to install, has stable contact, and high reliability.

[0049] Meanwhile, the grounding plate 500 is located on the inside of each row of terminals, so that the space between the two rows of terminals can be used to install the grounding plate 500 without increasing the thickness of the connector.

[0050] like Figure 4 As shown, since the grounding terminal 401 and the signal terminal 402 are arranged alternately, specifically, two signal terminals 402 are arranged between every two adjacent grounding terminals 401. Therefore, as Figure 4 and Figure 10 As shown, the protrusions 501 and recesses 502 on the grounding plate 500 are also alternately arranged, so that the protrusions 501 and recesses 502 on the grounding plate 500 correspond to the grounding terminal 401 and signal terminal 402 in each row of terminals, respectively. In a specific embodiment, as... Figure 4 and Figure 10 As shown, the grounding plate 500 is wavy. Setting the grounding plate 500 to be wavy not only facilitates molding, but also ensures that the protrusion 501 of the grounding plate 500 can reliably connect with the grounding terminal 401, and ensures that the recess 502 of the grounding plate 500 can effectively avoid the signal terminal 402.

[0051] like Figure 11 and Figure 12As shown, the mounting strip 300 includes a first mounting strip 310 and a second mounting strip 320. The first mounting strip 310 and the second mounting strip 320 are arranged vertically opposite each other. Figure 6 As shown, the first row of terminals 410 and the second row of terminals 420 are respectively inserted into the first mounting strip 310 and the second mounting strip 320, and each row of terminals extends to the front end of the insertion cavity 201. In one embodiment, the terminals and mounting strips 300 are integrally formed. After a row of terminals is fixed, the corresponding mounting strips 300 are formed on the terminal block 400 by injection molding. After forming, grounding pieces 500 are installed on the inner side of each row of terminals. Then, the two mounting strips 300 are snapped together vertically to form two rows of terminals facing each other. After the mating connector is inserted into the insertion cavity 201, the two rows of terminals in the insertion cavity 201 contact and clamp the terminals of the mating connector.

[0052] like Figure 5 and Figure 9 As shown, the rear end of the terminal on the terminal block 400 is bent outward so that the rear end of the terminal is parallel to the circuit board, making it easier to solder the rear end of the terminal to the circuit board.

[0053] like Figure 4 and Figure 8 As shown, the grounding plate 500 includes a first grounding plate 510 and a second grounding plate 500. The first grounding plate 510 is installed inside the first row of terminals 410, and the second grounding plate 500 is installed inside the second row of terminals 420.

[0054] like Figure 12 As shown, each mounting strip 300 includes two side walls 301 and a connecting portion 302. The two side walls 301 are arranged opposite each other along the insertion direction (Y direction), and the connecting portion 302 connects the two side walls 301. Figure 12 As shown, each of the two side walls 301 is provided with a socket 3011, and the sockets 3011 on the two side walls 301 correspond one to one. The terminals of the terminal block 400 are inserted into the sockets 3011, thereby fixing the terminals to the mounting strip 300.

[0055] like Figure 7 As shown, the grounding piece 500 is disposed between the two sidewalls 301. Utilizing the space between the two sidewalls 301 to install the grounding piece 500 eliminates the need for additional space, which is beneficial for connector thinning.

[0056] like Figure 12As shown, the inner side of the connecting part 302 is provided with a slot 3021, and the two ends of the slot 3021 are respectively connected to the insertion holes 3011 on the two side walls 301. The inner side of the connecting part 302 refers to the side of the connecting part 302 near the other mounting strip 300. The slot 3021 on the connecting part 302 communicates with the insertion holes 3011 on the side wall 301, and the terminal can pass through the slot 3021, and the terminal can be further fixed by the connecting part 302.

[0057] like Figure 12 As shown, the connecting part 302 is a connecting rib connecting the two side walls 301. Each mounting strip 300 is provided with multiple connecting parts 302, which are spaced apart between the two side walls 301 along the length direction (X direction) of the mounting strip 300.

[0058] Continue to refer to Figure 12 The side wall 301 is provided with several locking heads 3012. The locking heads 3012 are located at the end of the side wall 301 opposite to another mounting strip 300, that is, at the end of the side wall 301. For example... Figure 12 As shown, a plurality of locking heads 3012 are spaced apart along the length direction (X direction) of the mounting strip 300, and a locking groove 3013 is formed between adjacent locking heads 3012. When two mounting strips 300 are fastened together, the locking head 3012 on one of the first mounting strip 310 and the second mounting strip 320 engages with the locking groove 3013 on the other, thereby connecting the first mounting strip 310 and the second mounting strip 320. Specifically, as... Figure 11 As shown, the clip 3012 on the first mounting strip 310 is inserted into the slot 3013 on the second mounting strip 320, and the clip 3012 on the second mounting strip 320 is also inserted into the slot 3013 on the first mounting strip 310, thus forming a stable fastening structure, so that the first mounting strip 310 and the second mounting strip 320 are tightly fastened together to form a whole.

[0059] Specifically, in one embodiment, such as Figure 12 As shown, the clip head 3012 is T-shaped, and the clip groove 3013 is an inverted T-shape, the opposite of the clip head 3012. Thus, when an inverted T-shaped groove is cut into the side wall 301 of the mounting strip 300, a T-shaped clip head 3012 can be formed between the two inverted T-shaped grooves, facilitating the engagement of the first mounting strip 310 and the second mounting strip 320. Furthermore, by setting the clip head 3012 to a T-shape and the clip groove 3013 to an inverted T-shape, the first mounting strip 310 and the second mounting strip 320 can have the same shape; simply flipping one over allows it to engage with the other. During engagement, one mounting strip 300 is inserted into the other mounting strip 300 along the insertion direction (Y direction).

[0060] refer to Figure 4In one embodiment, the protrusion 501 of the grounding plate 500 is welded to the grounding terminal 401, thereby fixing the grounding plate 500 and making the contact between the grounding plate 500 and the grounding terminal 401 more stable and firm. Preferably, laser welding is used as the welding method.

[0061] The molding and installation steps of the high-frequency connector 10 in this embodiment are as follows:

[0062] The terminal block 400 and the mounting strip 300 are integrally injection molded. Specifically, the first row of terminals 410 and the first mounting strip 310 are integrally injection molded, and the second row of terminals 420 and the second mounting strip 320 are integrally injection molded.

[0063] The grounding piece 500 is welded to the formed terminal module. Specifically, the first grounding piece 510 is welded to the inside of the first row of terminals 410, and the second grounding piece 520 is welded to the inside of the second row of terminals 420.

[0064] The first mounting strip 310 and the second mounting strip 320 of the terminal block 400 with the grounding piece 500 welded together are fastened together.

[0065] The assembled semi-finished products are then assembled into the insulating housing 200;

[0066] The semi-finished product with the insulating shell 200 assembled is then assembled into the metal shell 100, thus completing the assembly of the high-frequency connector 10 of this application embodiment.

[0067] The technical features in the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above merely illustrate the implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A high-frequency connector, characterized in that, include: Metal casing; An insulating housing is disposed within the metal outer shell, and the insulating housing is provided with a insertion cavity; The mounting strip is inserted into the rear end of the insertion cavity; A terminal block is inserted onto the mounting strip and extends to the front end of the insertion cavity. The terminal block includes two rows of terminals arranged opposite each other, and each row of terminals includes a ground terminal and a signal terminal. A grounding plate is provided on the inner side of each row of terminals. The grounding plate has a protrusion and a recess. The protrusion of the grounding plate on the inner side of each row of terminals corresponds to the grounding terminal in that row of terminals and the protrusion is in contact with the grounding terminal. The recess of the grounding plate on the inner side of each row of terminals corresponds to the signal terminal in that row of terminals and the recess is separate from the signal terminal.

2. The high-frequency connector according to claim 1, characterized in that, The protrusions and the recesses are arranged alternately in sequence.

3. The high-frequency connector according to claim 2, characterized in that, The grounding plate is wavy.

4. The high-frequency connector according to claim 1, characterized in that, The mounting strip includes a first mounting strip and a second mounting strip arranged opposite to each other, and two rows of terminals arranged opposite to each other are a first row of terminals and a second row of terminals, respectively. The first row of terminals and the second row of terminals are respectively inserted into the first mounting strip and the second mounting strip, and each row of terminals extends to the front end of the insertion cavity.

5. The high-frequency connector according to claim 4, characterized in that, Each of the mounting strips includes two side walls arranged opposite each other along the insertion direction, and a connecting portion connecting the two side walls; each of the two side walls is provided with a socket, and the terminals of the terminal block pass through the socket.

6. The high-frequency connector according to claim 5, characterized in that, The grounding plate is located between the two side walls.

7. The high-frequency connector according to claim 5, characterized in that, The inner side of the connecting part is provided with a slot, and the two ends of the slot are respectively connected to the insertion holes on the two side walls.

8. The high-frequency connector according to claim 5, characterized in that, The sidewall is provided with a plurality of clip heads, which are spaced apart along the length of the mounting strip, and a slot is formed between adjacent clip heads. In the first mounting strip and the second mounting strip, the clip on one of them engages with the slot on the other to connect the first mounting strip and the second mounting strip.

9. The high-frequency connector according to any one of claims 1-8, characterized in that, The protrusion is welded to the grounding terminal.

10. The high-frequency connector according to claim 9, characterized in that, The welding is laser welding.

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