A high speed backplane connector

Abstract

The application discloses a high-speed backboard connector, and relates to the technical field of connectors, which comprises a plastic main body and a plurality of groups of signal terminal modules arranged in the plastic main body, two groups of the signal terminal modules form a differential pair, the plastic main body is provided with a shielding unit at a position corresponding to the differential pair, the shielding unit comprises a shielding sheet, a horizontal plate, a first shielding terminal, a second shielding terminal and a contact protrusion which are integrally formed, the first shielding terminal in the shielding unit is arranged side by side with the second shielding terminal in the adjacent shielding unit, a connecting unit is connected with the outermost group of the shielding units in series, the second shielding terminal in the outermost group of the shielding units is arranged side by side with a connecting terminal, the first shielding terminal, the second shielding terminal, the connecting terminal and the electroplated plastic body together form a full-enclosing structure for the differential pair, and the application is used for improving the integrity of the connector signal, enhancing the anti-interference ability, reducing the crosstalk and improving the mechanical stability of the connection.

Description

TECHNICAL FIELD

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

[0002] The high-speed backplane connector is part of a typical electronic system in which modules are physically connected, and complex systems rely on wires, traces and connectors on the backplane to handle a large amount of high-speed data flow. The high-speed backplane connector plays an important role in communication between multiple backplane modules. Due to structural limitations in the high-speed backplane connector, crosstalk between differential signal pairs is serious, which greatly affects the transmission quality of the signal.

[0003] Traditional backplane connectors are usually simple in structure, and the shielding design is insufficient, which is easily affected by external electromagnetic interference, causing signal loss or interference. Under this background, it is particularly important to develop a connector with good shielding effect and high signal integrity. SUMMARY

[0004] To solve the defects in the prior art, the present application provides a high-speed backplane connector.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] The present application provides a high-speed backplane connector, comprising a plastic main body and a plurality of groups of signal terminal modules arranged inside the plastic main body, two groups of signal terminal modules forming a differential pair,

[0007] The plastic main body is provided with a shielding unit at a position corresponding to the differential pair, the shielding unit comprising a shielding sheet, a horizontal plate, at least one group of first shielding terminals connected to one end of the shielding sheet, at least one group of second shielding terminals connected to one end of the horizontal plate, and a contact protrusion arranged on one side of the horizontal plate;

[0008] The first shielding terminal in the shielding unit is arranged side by side with the second shielding terminal in the adjacent shielding unit;

[0009] The connection unit is connected in series with the outermost group of shielding units, and the connection unit is provided with at least one group of connection terminals on the side corresponding to the second shielding terminal;

[0010] The second shielding terminal in the outermost group of shielding units is arranged side by side with the connection terminal;

[0011] The electroplated plastic body is arranged on the plastic main body;

[0012] The first shielding terminal, the second shielding terminal, the connecting terminal and the electroplated plastic body together form a full-enclosing structure for the differential pair.

[0013] As a preferred technical solution of the present application, the adjacent two groups of shielding units are connected in series through the contact between the contact protrusions and the shielding sheets, and the outermost group of shielding units in the series of shielding units is connected in series with the connecting unit to form a grounding loop.

[0014] As a preferred technical solution of the present application, the shielding sheet comprises an integrally formed back plate and side plates arranged on both sides of the back plate, and the cross section of the shielding sheet is U-shaped.

[0015] As a preferred technical solution of the present application, the transverse plate forms a ring structure with the back plate and the side plates.

[0016] As a preferred technical solution of the present application, one group of shielding units is connected in series with the back plate of another group of shielding units through the contact between the contact protrusions.

[0017] As a preferred technical solution of the present application, the connecting unit comprises a plurality of groups of connecting sheets arranged side by side and clamping plates arranged between the connecting sheets.

[0018] The connecting terminal is fixedly arranged on one side of the connecting sheet.

[0019] As a preferred technical solution of the present application, the connecting sheet is provided with a groove at a position corresponding to the contact protrusion.

[0020] As a preferred technical solution of the present application, the first shielding terminal, the second shielding terminal and the connecting terminal are all fisheye terminals.

[0021] As a preferred technical solution of the present application, the plastic body is provided with a mounting hole, a shielding groove and a through hole at positions corresponding to the signal terminal module, the shielding unit and the connecting unit, respectively.

[0022] As a preferred technical solution of the present application, the plastic body is provided with a clamping groove at a position corresponding to the clamping plate, and the clamping plate is clamped to the plastic body.

[0023] The present application has the following advantages:

[0024] Through the synergistic effect of the shielding unit, the connecting unit and the electroplated plastic body, the signal integrity of the connector is improved, the anti-interference ability is enhanced, the crosstalk is reduced and the mechanical stability of the connection is improved. The shielding unit effectively reduces the crosstalk between adjacent signal paths, especially when multiple signals are transmitted at the same time, which can reduce the bit error rate and improve the reliability of data transmission. The connecting unit further reduces the crosstalk and optimizes the transmission efficiency of the signal. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, but are not for limiting the present application. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of the present application without electroplated plastic body.

[0028] Figure 3 It is a schematic diagram of the overall structure of the present application from another perspective.

[0029] Figure 4 It is a schematic diagram of the structure of the shielding unit.

[0030] Figure 5 It is a schematic diagram of the structure of the connecting unit and one of the shielding units.

[0031] Figure 6 It is a schematic diagram of the connection structure of two adjacent groups of shielding units.

[0032] Figure 7 It is a schematic diagram of the structure of the plastic body.

[0033] Figure 8 It is Figure 7 It is a partial enlarged view of position A in the figure.

[0034] In the figure: 1, plastic body; 11, mounting hole; 12, shielding groove; 13, through hole; 14, clamping groove; 2, signal terminal module; 3, shielding unit; 31, shielding sheet; 311, back plate; 3111, strip hole; 312, side plate; 32, cross plate; 33, first shielding terminal; 34, second shielding terminal; 35, contact protrusion; 4, connecting unit; 41, connecting sheet; 42, clamping plate; 43, groove; 5, connecting terminal; 6, electroplated plastic body. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0036] Example 1

[0037] like Figures 1-6 As shown, a high-speed backplane connector includes a plastic body 1 and several sets of signal terminal modules 2 disposed inside the plastic body 1. Two sets of signal terminal modules 2 form a differential pair. The plastic body 1 is provided with a shielding unit 3 at a position corresponding to the differential pair. The shielding unit 3 includes an integrally formed shielding sheet 31, a horizontal plate 32, at least one set of first shielding terminals 33 connected to one end of the shielding sheet 31, at least one set of second shielding terminals 34 connected to one end of the horizontal plate 32, and a contact protrusion 35 disposed on one side of the horizontal plate 32.

[0038] The first shielding terminal 33 in the shielding unit 3 and the second shielding terminal 34 in the adjacent shielding unit 3 are arranged side by side. This side-by-side arrangement improves the overall connectivity and contact strength, reduces signal transmission problems caused by poor contact, and makes the overall system more stable. (It should be noted that the two adjacent shielding units 3 in this invention are two sets of shielding units 3 in the same column, which are arranged perpendicularly along the length of the connecting unit 4, such as...) Figure 5 (As shown).

[0039] The connecting unit 4 is connected in series with the outermost set of shielding units 3, and the connecting unit 4 is provided with at least one set of connecting terminals 5 on the side corresponding to the second shielding terminal 34;

[0040] The second shielding terminal 34 in the outermost set of shielding units 3 is arranged side by side with the connecting terminal 5;

[0041] An electroplated plastic body 6 is disposed on the plastic body 1;

[0042] The first shielding terminal 33, the second shielding terminal 34, the connecting terminal 5, and the electroplated plastic body 6 together form a fully enclosed structure for the differential pair.

[0043] Two rows of terminals are provided on the outside of each differential pair, which together with the electroplated plastic body 6 form a fully enclosed structure for the differential pair. The first shielding terminal 33, the second shielding terminal 34 and the connecting terminal 5 are used to shield external interference signals and ensure the integrity of the differential signal during transmission. The electroplated plastic body 6 not only provides good mechanical strength, but also further improves electrical conductivity and enhances the shielding effect.

[0044] The fully enclosed structure effectively encloses the differential pair within the shielded terminals and electroplated plastic body 6, minimizing the impact of external interference on the signal. This protective design ensures signal quality and stability during high-frequency and high-speed data transmission. Furthermore, the fully enclosed shielding structure provides anti-crosstalk characteristics for the differential pair structure, especially when multiple signal lines are arranged close together. The fully enclosed design reduces electromagnetic interference between signal lines. In addition, the fully enclosed structure can effectively manage the heat generated during signal transmission, avoiding signal attenuation or poor connection due to excessive temperature.

[0045] In terms of connection stability, the fully enclosed structure formed by multiple terminals and 6 pairs of differential pairs of electroplated plastic body can enhance the physical stability of the connection terminal 5 and reduce the risk of poor contact caused by external forces (such as vibration, torsion, etc.). This structural design makes the connector more reliable in mechanical performance and suitable for use in harsh working environments. The fully enclosed structure design also helps to simplify the assembly process of the entire connector. Due to the combination of shielding unit 3 and connection unit 4, technicians can connect and disassemble more easily, saving maintenance time.

[0046] In detail, in this embodiment, preferably, the first shielding terminal 33 is configured as two sets, the second shielding terminal 34 is configured as one set, and the connecting terminal 5 on each connecting piece 41 in the connecting unit 4 is configured as two sets;

[0047] In this way, after connecting multiple sets of shielding units 3 and connecting units 4 in series, there are three sets of first shielding terminals 33 and two sets of second shielding terminals 34 between two adjacent sets of shielding units 3. Specifically, two sets of first shielding terminals 33 are set at both ends of one set of second shielding terminals 34. Similarly, two sets of connecting terminals 5 are set at both ends of one set of second shielding terminals 34. Thus, each differential pair has two rows of terminals on its outer side, and the number of terminals in each row is three (only two sets of first shielding terminals 33 are set on one side of the shielding unit 3 furthest from the connecting unit 4). Combined with the electroplated plastic body 6, a full-enclosure structure for the differential pair is achieved.

[0048] It should be noted that the plastic body 1 is made of highly insulating and high-temperature resistant plastic material, which provides good mechanical protection for the internal circuit and has excellent thermal stability, ensuring the stable performance of the connector during long-term use.

[0049] Furthermore, such as Figures 5-6 As shown, two adjacent sets of shielding units 3 are connected in series through the contact between the contact protrusion 35 and the shielding sheet 31. The outermost set of shielding units 3 in the series connection is connected in series with the connecting unit 4, and the multiple sets of shielding units 3 are connected in series to form a grounding loop.

[0050] Among them, the shielding unit 3 is usually made of conductive material to block electromagnetic interference (EMI) and radio frequency interference (RFI), and is connected to each other by contact protrusions 35;

[0051] The outermost set of multiple shielding units 3 is connected to the connecting unit 4 to form a complete electrical grounding loop. This grounding function is an important design to protect the entire circuit. After being converted into a grounding loop, the entire series structure can effectively guide excess current back to the grounding terminal, reducing equipment failures caused by unstable current or transient interference.

[0052] When current flows through connection unit 4, and interference signals may enter signal terminal module 2 through gaps or poor contact, the contact protrusion 35 and shield 31 will guide the interference current through shield unit 3 into the ground wire. The electrical continuity of shield unit 3 ensures the cleanliness of the signal, while the grounding loop effectively eliminates potential interference. Through this series design, the integrity of the signal is improved, and the degradation and interference faced by the signal during transmission are significantly suppressed, which is especially important for high-speed transmission and sensitive signals.

[0053] Furthermore, through the formed grounding loop, surrounding electromagnetic interference is guided to the ground and will not affect the signal passing through shielding unit 3 and connection unit 4. This effective shielding design can significantly reduce signal distortion caused by electromagnetic interference and improve the reliability and stability of the system.

[0054] Furthermore, such as Figure 4 As shown, the shielding sheet 31 includes an integrally formed back plate 311 and side plates 312 disposed on both sides of the back plate 311. The shielding sheet 31 has a U-shaped cross section. The U-shaped cross section design makes the shielding sheet 31 have stronger peel and resistance to external interference. Especially in the case of high frequency signal transmission, it greatly reduces noise interference in the transmission path. The integral manufacturing method can reduce signal attenuation caused by connection points, while improving durability and reducing the possibility of failure caused by improper assembly.

[0055] The backplate 311 has several sets of strip holes 3111. The strip holes 3111 can increase the heat dissipation performance of the backplate 311. By promoting air circulation or providing a fixing point for the heat sink, it can help reduce the temperature of electronic devices during operation. The rationally arranged strip holes 3111 can be designed to reduce crosstalk between adjacent signal lines and improve signal integrity. In high-frequency applications, the strip holes 3111 can also be used in conjunction with shielding design to further improve the anti-interference capability of the system.

[0056] The horizontal plate 32 forms a ring structure with the back plate 311 and the side plate 312. This unique geometry not only provides additional physical support but also helps to build a more effective shielding structure. The ring design aims to form a closed electromagnetic shielding cavity, avoiding interaction between the signal source and the outside world. This structure not only optimizes signal integrity but also improves the robustness of the connector to poor contact caused by vibration. In addition, the ring structure design enhances the connection strength between components, reduces mechanical failures caused by external forces, and provides higher shock resistance and durability.

[0057] Furthermore, such as Figure 6 As shown, one set of shielding units 3 contacts the back plate 311 in another set of shielding units 3 through contact protrusions 35 and forms a series connection.

[0058] The contact protrusions 35 are designed to ensure good electrical contact between adjacent shielding units 3, forming a continuous shield during signal transmission and further improving the overall shielding effectiveness. Especially during high-speed signal transmission, they can effectively eliminate transmission loss. The series-connected shielding units 3 form multiple shields. This multi-layer shielding structure can greatly reduce external electromagnetic interference, which is especially important for high-frequency signals.

[0059] Furthermore, such as Figure 5 As shown, the connecting unit 4 includes multiple sets of connecting pieces 41 arranged side by side and snap-fit ​​plates 42 disposed between the connecting pieces 41. The side-by-side arrangement of the connecting pieces 41 provides a more compact connection method, reduces the overall size of the connector, and makes it easier to achieve high-density connection in a small space. The snap-fit ​​plates 42 between the connecting pieces 41 serve as a support, ensuring that the connection does not loosen when detachable, reducing mechanical fatigue during long-term use, and increasing the long-term reliability of the connector.

[0060] The connecting terminal 5 is fixedly disposed on one side of the connecting piece 41 to ensure the connection stability of the connecting terminal 5.

[0061] Furthermore, such as Figure 5 As shown, the connecting piece 41 has a groove 43 at the position corresponding to the contact protrusion 35. The design of the groove 43 not only reduces signal loss caused by poor contact, but also makes assembly simpler and more precise during the production process, improving production efficiency. The groove 43 design can ensure good contact between the contact surface and the contact protrusion 35, reduce contact resistance, and effectively improve the stability of signal transmission.

[0062] Furthermore, such as Figure 5As shown, the first shielding terminal 33, the second shielding terminal 34, and the connecting terminal 5 are all fisheye terminals. The design of the fisheye terminal can provide a larger contact area, improve the conductivity and stability of the signal, effectively reduce signal loss during transmission, and also maintain excellent electrical performance under extreme conditions (such as high temperature and humidity). Through the application of fisheye terminals, the connector can be more wear-resistant and improve the reliability of the connection. Especially during high-speed transmission, it can effectively reduce signal divergence problems.

[0063] The terminal arm of the second shielding terminal 34 is a bent structure so as to be arranged side by side with the first shielding terminal 33;

[0064] These terminals are used for connection to external PCB boards.

[0065] Furthermore, such as Figures 7-8 As shown, the plastic body 1 has mounting holes 11, shielding grooves 12, and through holes 13 respectively at the positions corresponding to the signal terminal module 2, shielding unit 3, and connecting unit 4. The design of mounting holes 11, shielding grooves 12, and through holes 13 facilitates quick and reliable assembly, making assembly or maintenance more convenient, saving time and resources, and also facilitating the testing of connector functions.

[0066] The plastic body 1 has a slot 14 at the position corresponding to the snap-fit ​​plate 42. The snap-fit ​​plate 42 is snapped into the plastic body 1. The slot 14 provides a firm fixing mechanism for the snap-fit ​​plate 42, ensuring that the parts will not loosen during use, improving the overall reliability of the connector and facilitating reassembly. This design makes the maintenance and replacement of the connector simpler, allowing users to operate it themselves without professional tools, reducing maintenance costs and improving the user experience.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed backplane connector, comprising a plastic body (1) and a plurality of signal terminal modules (2) disposed inside the plastic body (1), wherein two sets of the signal terminal modules (2) form a differential pair, characterized in that, The plastic body (1) is provided with a shielding unit (3) at the position corresponding to the differential pair. The shielding unit (3) includes an integrally formed shielding sheet (31), a horizontal plate (32), at least one set of first shielding terminals (33) connected to one end of the shielding sheet (31), at least one set of second shielding terminals (34) connected to one end of the horizontal plate (32), and a contact protrusion (35) provided on one side of the horizontal plate (32). The first shielding terminal (33) in the shielding unit (3) is arranged side by side with the second shielding terminal (34) in the adjacent shielding unit (3); The connecting unit (4) is connected in series with the outermost set of shielding units (3), and the connecting unit (4) has at least one set of connecting terminals (5) on the side corresponding to the second shielding terminal (34). The second shielding terminal (34) in the outermost set of shielding units (3) is arranged side by side with the connecting terminal (5); the electroplated plastic body (6) is disposed on the plastic body (1); The first shielding terminal (33), the second shielding terminal (34), the connecting terminal (5), and the electroplated plastic body (6) together form a fully enclosed structure for the differential pair; The two adjacent shielding units (3) are connected in series through the contact between the contact protrusion (35) and the shielding sheet (31). The outermost shielding unit (3) in the multiple sets of shielding units (3) connected in series is connected in series with the connecting unit (4), and the multiple sets of shielding units (3) are connected in series to form a grounding loop. One set of shielding units (3) contacts the back plate (311) in another set of shielding units (3) through contact protrusions (35) and forms a series connection; The connecting unit (4) includes multiple sets of connecting pieces (41) arranged side by side and a snap-fit ​​plate (42) disposed between the connecting pieces (41). The connecting terminal (5) is fixedly disposed on one side of the connecting piece (41); The connecting piece (41) has a groove (43) at a position corresponding to the contact protrusion (35). The shielding sheet (31) includes an integrally formed back plate (311) and side plates (312) disposed on both sides of the back plate (311). The front projection of the shielding sheet (31) is U-shaped.

2. A high-speed backplane connector according to claim 1, characterized in that, The horizontal plate (32) forms a ring structure with the back plate (311) and the side plate (312).

3. A high-speed backplane connector according to claim 1, characterized in that, The first shielding terminal (33), the second shielding terminal (34), and the connecting terminal (5) are all fisheye terminals.

4. A high-speed backplane connector according to claim 3, characterized in that, The plastic body (1) has mounting holes (11), shielding grooves (12), and through holes (13) respectively at the positions corresponding to the signal terminal module (2), shielding unit (3), and connecting unit (4).

5. A high-speed backplane connector according to claim 4, characterized in that, The plastic body (1) has a slot (14) at a position corresponding to the snap-fit ​​plate (42), and the snap-fit ​​plate (42) is snapped into the plastic body (1).

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