High-speed backboard connector

Abstract

The invention discloses a high-speed backboard connector, and relates to the technical field of connectors, the high-speed backboard connector comprises a plastic main body and a plurality of groups of signal terminal modules arranged in the plastic main body, two groups of signal terminal modules form a differential pair, and 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 transverse plate, a first shielding terminal, a second shielding terminal and a contact bulge which are integrally formed; the first shielding terminal in the shielding unit and the second shielding terminal in the adjacent shielding unit are arranged side by side; the connecting unit is connected in series with the group of shielding units on the outermost side; the second shielding terminals in the group of shielding units on the outermost side and the connecting terminals are arranged side by side; the first shielding terminal, the second shielding terminal, the connecting terminal and the electroplating plastic body together form a full-surrounding structure on the differential pair; according to the invention, the signal integrity of the connector is improved, the anti-interference capability is enhanced, crosstalk is reduced, and the mechanical stability of connection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to connectors, and in particular to a high-speed backplane connector. Background Art

[0002] High-speed backplane connectors are part of a typical electronic system where modules are physically connected. Complex systems rely on wires, traces, and connectors on the backplane to handle large amounts of high-speed data streams. High-speed backplane connectors play an important role in the communication between multiple backplane modules. Due to structural limitations in high-speed backplane connectors, there is serious crosstalk between differential signal pairs, which has a great impact on the transmission quality of the signal.

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

[0004] In order to solve the defects in the prior art, the present invention provides a high-speed backplane connector.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a high-speed backplane connector, comprising a plastic body and a plurality of signal terminal modules arranged inside the plastic body, wherein two groups of the signal terminal modules form a differential pair. The plastic body is provided with a shielding unit at a position corresponding to the differential pair, and the shielding unit includes an integrally formed 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 provided on one side of the horizontal plate; 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 connected in series with the outermost group of the shielding units, wherein the connecting unit is provided with at least one group of connecting terminals on a side corresponding to the second shielding terminal; The second shielding terminals in the outermost group of shielding units are arranged side by side with the connecting terminals; An electroplated plastic body, disposed on the plastic body; The first shielding terminal, the second shielding terminal, the connecting terminal and the electroplated plastic body together form a fully surrounding structure for the differential pair.

[0006] As a preferred technical solution of the present invention, two adjacent groups of shielding units are connected in series through the contact between the contact protrusion and the shielding sheet, the outermost group of shielding units among the multiple groups of shielding units connected in series is connected in series with the connecting unit, and the multiple groups of shielding units are connected in series to form a grounding loop.

[0007] As a preferred technical solution of the present invention, the shielding sheet includes 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.

[0008] As a preferred technical solution of the present invention, an annular structure is formed between the transverse plate, the back plate and the side plates.

[0009] As a preferred technical solution of the present invention, one group of shielding units contacts with the back plates in another group of shielding units through contact protrusions to form a series connection.

[0010] As a preferred technical solution of the present invention, the connection unit includes a plurality of groups of connection sheets arranged side by side and a clamping plate arranged between the connection sheets; The connecting terminal is fixedly arranged on one side of the connecting piece.

[0011] As a preferred technical solution of the present invention, the connecting sheet is provided with a groove at a position corresponding to the contact protrusion.

[0012] As a preferred technical solution of the present invention, the first shielding terminal, the second shielding terminal and the connecting terminal are all fisheye terminals.

[0013] As a preferred technical solution of the present invention, the plastic body is provided with mounting holes, shielding grooves, and through holes at positions corresponding to the signal terminal module, the shielding unit, and the connecting unit.

[0014] As a preferred technical solution of the present invention, the plastic body is provided with a slot at a position corresponding to the snap-in plate, and the snap-in plate is snap-connected with the plastic body.

[0015] The beneficial effects of the present invention are: By setting up the synergistic effect of the shielding unit, the connecting unit and the electroplated plastic body, the integrity of the connector signal 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 simultaneously, which can reduce the bit error rate and improve the reliability of data transmission. The connecting unit can further reduce crosstalk and optimize the signal transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention without electroplated plastic body.

[0018] Figure 3 It is a schematic diagram of the overall structure of the present invention from another perspective.

[0019] Figure 4 It is a schematic diagram of the structure of the shielding unit.

[0020] Figure 5 It is a schematic diagram of the structure of the connecting unit and one column of shielding units.

[0021] Figure 6 It is a schematic diagram of the connection structure of two adjacent groups of shielding units.

[0022] Figure 7 It is a schematic diagram of the structure of the plastic body.

[0023] Figure 8 for Figure 7 A local enlarged schematic diagram of point A in the middle.

[0024] In the figure: 1. plastic body; 11. mounting hole; 12. shielding groove; 13. through hole; 14. card slot; 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. card plate; 43. groove; 5. connecting terminal; 6. electroplated plastic body. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Embodiment 1 like Figure 1-Figure 6As shown, a high-speed backplane connector comprises a plastic body 1 and a plurality of groups of signal terminal modules 2 arranged inside the plastic body 1, two groups of the 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 comprises an integrally formed shielding sheet 31, a horizontal plate 32, at least one group of first shielding terminals 33 connected to one end of the shielding sheet 31, at least one group of second shielding terminals 34 connected to one end of the horizontal plate 32, and a contact protrusion 35 arranged 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 side-by-side laying design improves the overall connectivity and contact strength, reduces the signal transmission problem caused by poor contact, and makes the overall system more stable; (It should be noted that the two adjacent groups of shielding units 3 in the present invention are two groups of shielding units 3 in the same column, which are arranged vertically along the length direction of the connecting unit 4, such as Figure 5 as shown).

[0027] A connecting unit 4 connected in series with the outermost group of the shielding units 3, wherein the connecting unit 4 is provided with at least one group of connecting terminals 5 on a side corresponding to the second shielding terminal 34; The second shielding terminals 34 in the outermost group of shielding units 3 are arranged side by side with the connecting terminals 5; The electroplated plastic body 6 is arranged 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 surrounding structure for the differential pair.

[0028] Among them, two rows of terminals are arranged on the outside of each differential pair and cooperate with the electroplated plastic body 6 to 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. The fully enclosed structure can minimize the impact of external interference on the signal by effectively wrapping the differential pair in the shielding terminal and the electroplated plastic body 6. This protective design ensures the quality and stability of the signal during high-frequency and high-speed data transmission, and the fully enclosed shielding structure can provide anti-crosstalk characteristics for the differential pair structure, especially when multiple signal lines are arranged close to each other. The fully enclosed design reduces the electromagnetic interference between the signal lines. In addition, the fully enclosed structure can also effectively manage the heat generated during the signal transmission process to avoid signal attenuation or poor connection due to excessive temperature.

[0029] In terms of connection stability, the fully enclosed structure formed by multiple terminals and 6 pairs of differential pairs of electroplated plastic bodies can enhance the physical stability of the connecting terminals 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 strict working environments. The design of the fully enclosed structure also helps to simplify the assembly process of the entire connector. Due to the combination of the shielding unit 3 and the connecting unit 4, technicians can connect and disassemble more conveniently, saving maintenance time.

[0030] In detail, in this embodiment, preferably, the first shielding terminals 33 are provided in two groups, the second shielding terminals 34 are provided in one group, and the connection terminals 5 on each connection piece 41 in the connection unit 4 are provided in two groups; In this way, after multiple groups of shielding units 3 and connecting units 4 are connected in series, the first shielding terminals 33 and the second shielding terminals 34 between two adjacent groups of shielding units 3 are both three groups. Specifically, the two groups of first shielding terminals 33 are arranged at the two ends of a group of second shielding terminals 34. Similarly, the two groups of connecting terminals 5 are arranged at the two ends of a group of second shielding terminals 34, so that two rows of terminals are arranged on the outside of each group of differential pairs, and the number of terminals in the two rows is three (only two groups of first shielding terminals 33 are arranged on one side of the shielding unit 3 farthest from the connecting unit 4), and the electroplated plastic body 6 is combined to realize a full enclosure structure of the differential pairs.

[0031] It should be noted that the plastic body 1 is made of a highly insulating, high-temperature resistant plastic material, which provides good mechanical protection for the internal circuit and has excellent thermal stability, thereby ensuring stable performance of the connector during long-term use.

[0032] Further, if Figure 5-Figure 6 As shown, two adjacent groups of shielding units 3 are connected in series through the contact between the contact protrusion 35 and the shielding sheet 31, and the outermost group of shielding units 3 among the multiple groups of shielding units 3 connected in series is connected in series with the connecting unit 4, and the multiple groups of shielding units 3 are connected in series to form a grounding loop.

[0033] The shielding units 3 are usually made of conductive material, used to block electromagnetic interference (EMI) and radio frequency interference (RFI), and are connected to each other through contact protrusions 35; The outermost group of the 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 end, reducing equipment failures caused by current instability or transient interference.

[0034] When current flows through the connecting unit 4, and interference signals may enter the signal terminal module 2 through gaps or poor contact, the contact between the contact protrusion 35 and the shielding sheet 31 will guide the interference current into the ground wire through the shielding unit 3. The electrical connectivity of the shielding unit 3 ensures the cleanliness of the signal, and 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.

[0035] In addition, through the formed ground loop, the surrounding electromagnetic interference is guided to the ground and will not affect the signal passing through the shielding unit 3 and the connecting unit 4. This effective shielding design can significantly reduce the signal distortion caused by electromagnetic interference and improve the reliability and stability of the system.

[0036] Further, if 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 cross section of the shielding sheet 31 is U-shaped. The U-shaped cross section design enables the shielding sheet 31 to have a stronger ability to peel off and resist external intrusion, especially in the case of high-frequency signal transmission, which greatly reduces the noise interference in the transmission path. The integrally formed manufacturing method can reduce the signal attenuation caused by the connection point, while improving the durability and reducing the possibility of failure caused by improper assembly; The back plate 311 is provided with a plurality of strip holes 3111, which can increase the heat dissipation performance of the back plate 311, and help the electronic device to reduce the temperature during operation by promoting air circulation or providing a fixing point for the radiator. The strip holes 3111 with a reasonable layout can be designed to reduce the crosstalk between adjacent signal lines and improve the signal integrity. In high-frequency applications, the strip holes 3111 can also cooperate with the shielding design to further improve the anti-interference ability of the system; An annular structure is formed between the horizontal plate 32 and the back plate 311 and the side plate 312. This unique geometric shape not only provides additional physical support, but also helps to build a more effective shielding structure. The annular design is committed to forming a closed electromagnetic shielding cavity to avoid interaction between the signal source and the outside world. This structure not only optimizes the integrity of the signal, but also improves the robustness of the connector against poor contact due to vibration. In addition, the annular structure design enhances the connection strength between components, reduces mechanical failures caused by external forces, and provides higher shock resistance and durability.

[0037] Further, if Figure 6 As shown, one group of the shielding units 3 contacts the back plate 311 in another group of shielding units 3 through the contact protrusions 35 to form a series connection.

[0038] Among them, by designing the contact protrusion 35, good electrical contact between adjacent shielding units 3 can be ensured, forming a continuous shield during signal transmission, further improving the effectiveness of the overall shielding layer, especially in high-speed signal transmission, which can effectively eliminate transmission losses. The shielding units 3 connected in series form multiple shields. This multi-layer shielding structure can greatly reduce external electromagnetic interference, which is particularly important for high-frequency signals.

[0039] Further, if Figure 5 As shown, the connection unit 4 includes a plurality of groups of connection pieces 41 arranged side by side and a snap-in plate 42 arranged between the connection pieces 41. The connection pieces 41 are designed to be arranged side by side, which can provide a more compact connection method, reduce the volume of the overall connector, and facilitate high-density connection in a small space. The snap-in plate 42 is provided between the connection pieces 41 as a support, which can ensure that the connection is not loose in a detachable state, reduce mechanical fatigue in long-term use, and increase the long-term reliability of the connector. 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 .

[0040] Further, if Figure 5 As shown, the connecting piece 41 is provided with a groove 43 at a position corresponding to the contact protrusion 35. The design of the groove 43 not only reduces the signal loss caused by poor contact, but also makes the assembly simpler and more precise during the production process, thereby improving the production efficiency. The design of the groove 43 can ensure good contact between the contact surface and the contact protrusion 35, reduce the contact resistance, and effectively improve the stability of signal transmission.

[0041] Further, if Figure 5 As 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, and effectively reduce the signal loss during the transmission process. At the same time, it also enables excellent electrical performance to be maintained under extreme conditions (such as high temperature and humidity). Through the application of fisheye terminals, the connector can be more wear-resistant and the reliability of the connection is improved. Especially in high-speed transmission, the signal divergence problem can be effectively reduced.

[0042] 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; These terminals are used to connect to external PCB boards.

[0043] Further, if Figure 7-Figure 8As shown, the plastic body 1 is provided with mounting holes 11, shielding grooves 12, and through holes 13 at positions corresponding to the signal terminal module 2, the shielding unit 3, and the connecting unit 4, respectively. The design of the mounting holes 11, the shielding grooves 12, and the through holes 13 facilitates quick and reliable assembly, making it more convenient during assembly or maintenance, saving time and resources, and also facilitating testing of connector functions; The plastic body 1 is provided with a card slot 14 at a position corresponding to the card plate 42. The card plate 42 is card-connected with the plastic body 1. The card slot 14 provides a firm fixing mechanism for the card plate 42, ensuring that no parts will become loose during use, thereby improving the overall reliability of the connector and facilitating reassembly. This design makes it easier to maintain and replace the connector, and users can operate it themselves without professional tools, reducing maintenance costs and improving user experience.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-speed backplane connector, comprising a plastic body (1) and a plurality of groups of signal terminal modules (2) arranged inside the plastic body (1), wherein two groups of the signal terminal modules (2) form a differential pair, and characterized in that: The plastic body (1) is provided with a shielding unit (3) at a position corresponding to the differential pair, the shielding unit (3) comprising an integrally formed shielding sheet (31), a transverse plate (32), at least one group of first shielding terminals (33) connected to one end of the shielding sheet (31), at least one group of second shielding terminals (34) connected to one end of the transverse plate (32), and a contact protrusion (35) provided on one side of the transverse plate (32); 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; A connecting unit (4) connected in series with the outermost group of the shielding units (3), wherein the connecting unit (4) is provided with at least one group of connecting terminals (5) on a side corresponding to the second shielding terminal (34); The second shielding terminals (34) in the outermost group of shielding units (3) are arranged side by side with the connecting terminals (5); An electroplated plastic body (6) is arranged 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.

2. A high-speed backplane connector according to claim 1, characterized in that: Two adjacent groups of shielding units (3) are connected in series through contact between the contact protrusions (35) and the shielding sheets (31); the outermost group of shielding units (3) in the multiple groups of shielding units (3) connected in series is connected in series with the connection unit (4); and the multiple groups of shielding units (3) are connected in series to form a grounding loop.

3. A high-speed backplane connector according to claim 2, characterized in that: The shielding sheet (31) comprises an integrally formed back plate (311) and side plates (312) arranged on both sides of the back plate (311); the cross section of the shielding sheet (31) is U-shaped.

4. A high-speed backplane connector according to claim 2, characterized in that: An annular structure is formed between the transverse plate (32), the back plate (311) and the side plate (312).

5. The high-speed backplane connector according to claim 1, characterized in that: One group of the shielding units (3) contacts the back plate (311) in another group of shielding units (3) via the contact protrusions (35) to form a series connection.

6. A high-speed backplane connector according to claim 5, characterized in that: The connection unit (4) comprises a plurality of groups of connection sheets (41) arranged side by side and a clamping plate (42) arranged between the connection sheets (41); The connecting terminal (5) is fixedly arranged on one side of the connecting piece (41).

7. A high-speed backplane connector according to claim 6, characterized in that: The connecting sheet (41) is provided with a groove (43) at a position corresponding to the contact protrusion (35).

8. The high-speed backplane connector according to claim 7, characterized in that: The first shielding terminal (33), the second shielding terminal (34) and the connecting terminal (5) are all fisheye terminals.

9. The high-speed backplane connector according to claim 8, characterized in that: The plastic body (1) is provided with a mounting hole (11), a shielding groove (12), and a through hole (13) at positions corresponding to the signal terminal module (2), the shielding unit (3), and the connecting unit (4).

10. The high-speed backplane connector according to claim 9, characterized in that: The plastic body (1) is provided with a clamping groove (14) at a position corresponding to the clamping plate (42), and the clamping plate (42) is clamped to the plastic body (1).

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