A crimped high speed connector transmission system

Abstract

This application relates to the technical field of electronic connectors and printed circuit boards (PCBs), specifically disclosing a crimp-type high-speed connector transmission system. The system includes a PCB board and a connector. The connector includes an upper row of connector pins and a lower row of connector pins, one end of which is used to connect to the PCB board. The PCB board has an upper row of holes for the upper connector pins and a lower row of holes for the lower connector pins. Both the upper and lower row of holes include 11 holes. The upper row of connector pins includes two high-speed signal groups and a low-speed signal group. The low-speed signal group includes a conversion connector. The end of the conversion connector for insertion into the PCB board is located on the side of one high-speed signal group away from the other. The end of the conversion connector for mating with an optical module is located between the two high-speed signal groups. This application effectively reduces development and board management costs.

Description

Technical Field

[0001] This application relates to the field of combined technology of electronic connectors and printed circuit boards (PCBs), and in particular to a crimp-type high-speed connector transmission system. Background Technology

[0002] With the continuous growth of communication technology and network bandwidth demands, SFP (Small Form-factor Pluggable) connectors are gradually becoming insufficient to meet the requirements of higher transmission rates. To improve transmission speeds, the industry has begun researching upgrades from single-channel SFP connectors to dual-channel DSFP (Dual-channel Small Form-factor Pluggable) connectors. Several solutions are currently available on the market, designed to achieve higher data transmission speeds and more stable signal transmission performance through improvements in connector design and technical parameters. The application of these technologies has greatly promoted the development of high-performance computing and communication equipment such as data centers, servers, and network switches, improving the overall performance and reliability of systems.

[0003] SFP and DSFP connectors differ in the number and arrangement of pins. SFP connectors have 10 pins per row, while DSFP connectors have 11 pins per row. Please refer to the attached diagram for pin arrangement details. Figure 1 With appendix Figure 2 .

[0004] Existing SFPs primarily employ a press-fit vertical ferrule structure, where the ferrule's tail end (the PCB insertion end) is a solderless fisheye structure, allowing for plug-and-play operation. While the fisheye structure facilitates installation, its width is significantly greater than that of the through-hole soldered ferrule's tail end. This results in a larger required pin diameter on the PCB compared to the through-hole soldered ferrule. To match the spacing between the other ends of each ferrule—the mating ends (the ends that mate with the optical module)—the fisheye structure's tail ends are often not arranged in a straight line (larger pin diameters lead to smaller hole spacing, compromising strength), but rather in a zigzag pattern to meet strength requirements. Simultaneously, the differential pairs need to be symmetrically arranged to amplify differential signals and suppress common-mode signals. A PCB structure compatible with the existing SFP press-fit vertical ferrule structure is shown in the attached reference. Figure 3 .

[0005] Upgrading a press-fit vertical ferrule structure involves directly replacing the SFP single-channel ferrule with the DSFP dual-channel ferrule. Due to differences in PIN hole positions and corresponding circuits on the PCB, the PCB needs to be adapted and adjusted. Redesigning and developing the PCB circuitry inevitably leads to a significant increase in costs. Therefore, how to achieve the upgrade from SFP to DSFP without significantly increasing development costs and production management complexity has become a pressing technical problem. Summary of the Invention

[0006] To overcome the above-mentioned technical problems, this application provides a crimp-type high-speed connector transmission system.

[0007] The crimp-type high-speed connector transmission system provided in this application adopts the following technical solution: A crimp-type high-speed connector transmission system includes a PCB board and a connector. The connector includes an upper row of connector pins and a lower row of connector pins. One end of the upper row of connector pins and the lower row of connector pins is used to connect to the PCB board. The PCB board has an upper row of holes for inserting the upper row of connector pins and a lower row of holes for inserting the lower row of connector pins. Both the upper row of holes and the lower row of holes include 11 holes. The upper row of connector pins includes two high-speed signal groups and a low-speed signal group. The low-speed signal group includes a conversion connector. The end of the conversion connector used to insert into the PCB board is located on the side of one high-speed signal group away from the other high-speed signal group. The end of the conversion connector used to mate with an optical module is located between the two high-speed signal groups.

[0008] By adopting the above technical solution, when upgrading an SFP connector to a DSFP connector, one of the ferrules in the low-speed signal group is adjusted to be a conversion ferrule. Since the end of the conversion ferrule used for mating with the optical module is still located between the two high-speed signal ferrules, the upper row of ferrules can be properly mated with the optical module. The end of the conversion ferrule inserted into the PCB board is located on the side of one high-speed signal group furthest from the other. With this configuration, if the conversion ferrule is removed, the remaining ferrules in the upper row will have the same PIN hole arrangement on the PCB board as the SFP connector. That is, on the existing PCB board adapted for the SFP connector, only one additional PIN hole needs to be added to one side of the existing PIN hole position to correspond to the conversion ferrule of this application, thus forming the upper row of holes in this application. The DSFP connector's lower row of insert pins and corresponding PIN holes and circuits, compared to the SFP connector's lower row of insert pins and corresponding PIN holes and circuits, only adds one PIN hole and matching circuit to the PIN hole position of the SFP connector's lower row of insert pins, without involving any adjustments to the original circuits.

[0009] By setting up a different ferrule, the original pin holes and circuits on the PCB board do not need to be adjusted. Only two additional pin holes and corresponding circuits are needed to make the DSFP connector compatible with the PCB board of the SFP connector, which greatly reduces development costs and subsequent PCB board management costs.

[0010] Optionally, the low-speed signal group further includes a low-speed signal ferrule. Both the low-speed signal ferrule and the conversion ferrule include a module segment for interoperability with the optical module and a fisheye segment for insertion into the PCB board. The low-speed signal ferrule also includes a straight section connected to its own module segment and a converging section connecting its own fisheye segment and the straight section. The converging section is inclined. The conversion ferrule also includes a first straight section for connecting to its own module segment, a second straight section for connecting to its own fisheye segment, and a jumper connecting the first straight section and the second straight section. The fisheye segment and the second straight section of the conversion ferrule are located on the side of one high-speed signal group away from the other high-speed signal group, and the first straight section of the conversion ferrule is located between the two high-speed signal groups.

[0011] By adopting the above technical solution, when adjusting the low-speed signal ferrule to a conversion ferrule, compared to breaking the inclined contraction section and connecting it with jumpers, breaking the straight section into a first and second straight section and connecting it with jumpers eliminates the need for special matching of the jumpers for the inclined contraction section. Furthermore, the inclined contraction section is designed to converge and concentrate the fisheye segments of each ferrule; therefore, connecting the jumpers to the first and second straight sections provides more operational space and facilitates jumper installation.

[0012] Optionally, the jumper is independent of the first straight segment and the second straight segment.

[0013] By adopting the above technical solution, compared with the integrated molding of the first straight segment, the second straight segment, and the jumper, since the jumper needs to cross at least one set of high-speed signal groups, the jumper, which is independent of the first and second straight segments, can be connected to the first and second straight segments after production, which can effectively reduce the difficulty of molding and assembly.

[0014] Optionally, the upper row of plugs further includes a plug plastic part, in which the fisheye section, the first straight section, and the second straight section of the change plug are all inserted. The plug plastic part has at least two connecting slots, in which the connection between the first straight section and the jumper is located in one of the connecting slots, and in which the connection between the second straight section and the jumper is located in the other connecting slot.

[0015] By adopting the above technical solution, when producing the upper row of ferrules, the ferrules of the high-speed signal group and the low-speed signal group (excluding the transformation ferrules) and the structure of the transformation ferrules (excluding the jumper wires) are first formed by stamping and other methods. Then, the ferrule plastic parts are formed on the above structure by injection molding and other methods, leaving two connecting grooves so that the connection points of the first straight section and the second straight section with the jumper wire can be exposed in the connecting grooves. The connecting grooves are used for positioning, which facilitates the connection of the jumper wire with the fisheye section and the straight section.

[0016] Optionally, the second straight segment includes a widened portion for connection with a jumper and an extension portion connected to the widened portion, wherein the length of the widened portion along the arrangement direction from the first straight segment to the second straight segment is greater than the length of the extension portion along the arrangement direction from the first straight segment to the second straight segment.

[0017] By adopting the above technical solution, compared with the jumper being directly connected to the extension, by adding a widening part, since the length of the widening part along the arrangement direction from the first straight segment to the second straight segment is greater than the length of the extension part along the arrangement direction from the first straight segment to the second straight segment, that is, the width of the widening part is greater than the extension part, the connection area between the jumper and the adapter is increased, the connection difficulty between the jumper and the adapter is simplified, and the connection reliability is increased.

[0018] Optionally, the low-speed signal group further includes two low-speed signal ferrules, with the end of the conversion ferrule used for mating with the optical module located between the ends of the two low-speed signal ferrules used for mating with the optical module.

[0019] By adopting the above technical solution, in practical applications, the end of the adapter ferrule used for mating with the optical module can be located either on one side of the two low-speed signal ferrules or between the two low-speed signal ferrules, without affecting the connection to the PCB board or signal transmission. If the end of the adapter ferrule used for mating with the optical module is located between the two low-speed signal ferrules, then after removing the adapter ferrule, the remaining ferrules are approximately centrally symmetrical along the module segment of the adapter ferrule. Compared to having the adapter ferrule located on one side of the two low-speed signal ferrules, this near-central symmetry reduces the defect rate during stamping, thus improving the yield rate of the ferrules and ensuring the structural shape of the formed ferrules as much as possible, thereby improving the product quality of the formed ferrules.

[0020] Optionally, there are two low-speed signal ferrules, and the fisheye segments of the two low-speed signal ferrules are centrally symmetrical.

[0021] By adopting the above technical solution, the high-speed signal group consists of two grounding terminals on either side and a high-speed signal terminal between them, each with a fisheye segment. Each fisheye segment of the high-speed signal group is centrally symmetrical along the centerline of the fisheye segments of the two high-speed signal terminals to form a differential pair. Three types of insert chips are required during manufacturing: one insert chip for the grounding terminals (grounding insert chip), and two insert chips for the high-speed signal terminals (signal insert chips). By setting the low-speed signal terminals in this way (differential pair), only three types of insert chips are needed during production; that is, the same insert chips can be used to form both high-speed and low-speed signal terminals. During production, the chips are arranged as follows: grounding insert chip, two types of signal insert chips, grounding insert chip, two types of signal insert chips, grounding insert chip, two types of signal insert chips, grounding insert chip, grounding insert chip, grounding insert chip, and so on. This reduces the development cost of insert chips, and the reduction in the number of types also lowers management costs.

[0022] Optionally, the high-speed signal group includes a grounding spring and at least two grounding plugs, wherein the grounding spring is electrically connected to each grounding plug within the same high-speed signal group.

[0023] By adopting the above technical solution and adding a grounding spring, impedance can be reduced and high-speed signal integrity can be optimized.

[0024] In summary, this application includes at least one of the following beneficial technical effects: By changing the setting of the ferrule, the end of the connector used for insertion into the PCB board is moved from between the two high-speed signal ferrules to the side of one high-speed signal group that is away from the other. In this way, the remaining ferrules in the low-speed signal group of the DSFP connector and the ferrules in the two high-speed signal groups can correspond to the PIN holes and circuits on the PCB board of the matching SFP connector. Only the PIN holes and circuits corresponding to the changing ferrule need to be added, which reduces development and management costs. Independent jumpers can reduce molding and assembly difficulty. By adding a widened section to connect the jumper, connecting the jumper to the straight section, and leaving two connection slots in the plug plastic part, the installation difficulty of the jumper can be further reduced. Changing the position and arrangement of the ferrules, as well as the position and arrangement of the low-speed signal ferrules, can not only improve the product quality of the molded ferrules, but also reduce the development and management costs of the ferrules. Attached Figure Description

[0025] Figure 1 This is a pin layout diagram of an SFP connector in the background art.

[0026] Figure 2 This is a pin layout diagram of a DSFP connector in the background art.

[0027] Figure 3This refers to the pin hole arrangement on the PCB board used to mate with SFP connectors in the background technology.

[0028] Figure 4 This is a structural schematic diagram of an embodiment of this application.

[0029] Figure 5 This is a schematic diagram highlighting the connector and PCB board in the embodiments of this application.

[0030] Figure 6 This is a schematic diagram of the structure of one of the connectors in this application embodiment, with the housing removed.

[0031] Figure 7 This is a schematic diagram highlighting the upper row of inserts in an embodiment of this application.

[0032] Figure 8 This is a schematic diagram highlighting the structure of the modified ferrule in the embodiments of this application.

[0033] Figure 9 This is a partial structural diagram highlighting the upper and lower hole groups in an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures: 1. PCB board; 11. Upper row of holes; 12. Lower row of holes; 2. Housing; 3. Connector; 4. Housing; 5. Upper row of ferrules; 6. Lower row of ferrules; 7. Low-speed signal group; 71. Adapter ferrule; 711. First straight section; 712. Second straight section; 7121. Widened section; 7122. Extension section; 713. Jumper wire; 72. Low-speed signal ferrule; 721. Module section; 722. Straight section; 723. Retractable section; 724. Fisheye section; 8. High-speed signal group; 81. High-speed signal ferrule; 82. Grounding ferrule; 83. Grounding spring; 9. ferrule plastic part; 91. Connecting slot; 92. Communicating slot. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 3 , 4 -9 provides further details regarding this application.

[0036] This application discloses a transmission system using a crimp-type high-speed connector 3. (Refer to...) Figure 4 , Figure 5 The crimp-type high-speed connector 3 transmission system includes a PCB board 1, a housing 2 mounted on the PCB board 1, and two sets of connectors 3 disposed inside the housing 2.

[0037] Reference Figure 5 , Figure 6Both connectors 3 are fixed on the PCB board 1. Each connector 3 includes a housing 4, two sets of upper row connector pins 5, and two sets of lower row connector pins 6. Adjacent upper row connector pins 5 and lower row connector pins 6 form a dual-channel configuration. Each upper row connector pin 5 and lower row connector pin 6 has one end for connecting to the optical module and the other end for connecting to the PCB board 1. The upper row connector pin 5 has a corresponding connector attached to the optical module connection end. Figure 3 Arranged on the right side, the lower row of ferrules 6 corresponds to the optical module connection end. Figure 3 Arranged on the left side of the middle.

[0038] Reference Figure 7 , Figure 8 The upper row of connectors 5 includes a low-speed signal group 7 for transmitting low-speed signals, two high-speed signal groups 8 for transmitting high-speed signals, and connector plastic parts 9 for fixing the low-speed signal group 7 and the high-speed signal group 8. The high-speed signal group 8 includes two high-speed signal connectors 81 for transmitting signals, two grounding connectors 82 for grounding, and grounding springs 83 fixed on the two grounding connectors 82. The two high-speed signal connectors 81 are located between the two grounding connectors 82, and the grounding springs 83 are electrically connected to both grounding connectors 82 to optimize SI (high-speed signal integrity) performance.

[0039] Reference Figure 7 , Figure 8 The low-speed signal group 7 includes a conversion ferrule 71 and two low-speed signal ferrules 72, which are located between the two high-speed signal groups 8. The low-speed signal ferrule 72, the high-speed signal ferrule 81, and the grounding ferrule 82 each include a sequentially connected and integrally formed module segment 721, straight segment 722, retractable segment 723, and fisheye segment 724. The module segment 721 is used for interoperability with optical modules, the fisheye segment 724 is used for insertion into the PCB board 1, the straight segment 722 extends in a straight line, and the retractable segment 723 connects the straight segment 722 and the fisheye segment 724. The retractable segment 723 is tilted to adjust the position of the fisheye segment 724 and the module segment 721, achieving retraction adjustment.

[0040] Reference Figure 8 In the high-speed signal group 8, the fisheye segments 724 of the two high-speed signal ferrules 81 and the two grounding ferrules 82 are centrally symmetrical about the centerline of the two high-speed signal ferrules 81 to form a differential pair. The fisheye segments 724 of the two low-speed signal ferrules 72 are centrally symmetrical about their centerlines, and the two low-speed signal ferrules 72 and the adjacent grounding ferrules 82 also form a differential pair.

[0041] Reference Figure 8The transformation socket 71 also includes a module segment 721 and a fisheye segment 724, consistent with the low-speed signal socket 72, high-speed signal socket 81, and grounding socket 82. The transformation socket 71 also includes a first straight segment 711, a second straight segment 712, and a jumper 713 connecting the first straight segment 711 and the second straight segment 712. The first straight segment 711 is connected to the module segment 721 and integrally formed with it. The second straight segment 712 is connected to the fisheye segment 724 and integrally formed with it. The jumper 713 is independent of the first straight segment 711 and the second straight segment 712; that is, the jumper 713 is not integrally formed with either the first straight segment 711 or the second straight segment 712. The jumper 713 is fixed and electrically connected to the first straight segment 711 and the second straight segment 712 by soldering or other methods. Depending on the overall length of the adapter 71, a longer adapter 71 may also include an inclined tapering section 723 to connect the second straight section 712 and the fisheye section 724, such as... Figure 8 As shown, the second straight section 712 of the shorter transformation ferrule 71 can be directly connected to the fisheye section 724.

[0042] Reference Figure 8 The module segment 721 and the first straight segment 711 of the converter ferrule 71 are located between the two low-speed signal ferrules 72. The second straight segment 712 and the fisheye segment 724 of the converter ferrule 71 are located on the side of one high-speed signal group 8 away from the other high-speed signal group 8. The second straight segment 712 includes a widened portion 7121 for connection with the jumper 713 and an extension portion 7122 integrally formed on the side of the widened portion 7121 near the fisheye segment 724. The widened portion 7121, the extension portion 7122, and the fisheye segment 724 are integrally formed. The length of the widened portion 7121 along the arrangement direction from the first straight segment 711 to the second straight segment 712 is greater than the length of the extension portion 7122 along the arrangement direction from the straight segment 722 to the fisheye segment 724 of the change plug 71. That is, the width of the widened portion 7121 is greater than that of the extension portion 7122. The jumper wire 713 is fixed on the widened portion 7121 and electrically connected to the widened portion 7121.

[0043] Reference Figure 7 , Figure 8 The upper row of connectors 5 has two connector plastic parts 9, both of which are injection molded onto the high-speed signal connector 81, ground connector 82, low-speed signal connector 72, and the transformation connector 71 except for the jumper 713. One connector plastic part 9 is connected to the module section 721, and the other connector plastic part 9 is connected to the straight section 722, the first straight section 711, the second straight section 712, the contraction section 723, and the fisheye section 724.

[0044] Reference Figure 7 , Figure 8The insert plastic part 9, which connects to the straight section 722, the first straight section 711, and the second straight section 712, has two connecting slots 91 and a connecting slot 92 connecting the two connecting slots 91. The connection between the first straight section 711 and the jumper 713 is located in one of the connecting slots 91, and the connection between the widened part 7121 and the jumper 713 is located in the other connecting slot 91. The main body of the jumper 713 is located in the connecting slot 92, and the two ends of the jumper 713 are located in different connecting slots 91.

[0045] Reference Figure 9 The PBC board has an upper row hole group 11 corresponding to the upper row of plugs 5 and a lower row hole group 12 corresponding to the lower row of plugs 6. Both the upper row hole group 11 and the lower row hole group 12 include 11 holes. Each fisheye segment 724 of the upper row plug 5 is inserted into the hole of the corresponding upper row hole group 11, and each fisheye end of the lower row plug 6 is inserted into the corresponding hole of the lower row hole group 12.

[0046] The implementation principle of the crimp-type high-speed connector 3 transmission system in this application embodiment is as follows: By changing the ferrule 71, the ferrule arrangement of the upper row of ferrules 5 and the optical module connection end can be adjusted. Specifically, the fisheye segment 724 of a ferrule used for transmitting low-speed signals is moved out between the two high-speed signal ferrules 81 and moved to one side of the two high-speed signal ferrules 81. In this way, the original PIN holes and circuits of the PCB board 1 adapted to the SFP connector 3 do not need to be adjusted. Only two PIN holes and corresponding circuits need to be added to adapt to the DSFP connector 3, which greatly reduces the development cost and the subsequent management cost of the PCB board 1.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A crimp-type high-speed connector transmission system, comprising a PCB board (1) and a connector (3), wherein the connector (3) comprises an upper row of inserts (5) and a lower row of inserts (6), one end of the upper row of inserts (5) and the lower row of inserts (6) being used for connection with the PCB board (1), characterized in that: The PCB board (1) has an upper row of holes (11) for inserting the upper row of inserts (5) and a lower row of holes (12) for inserting the lower row of inserts (6). Both the upper row of holes (11) and the lower row of holes (12) have 11 holes. The upper row of inserts (5) includes two high-speed signal groups (8) and a low-speed signal group (7). The low-speed signal group (7) includes a conversion insert (71). The end of the conversion insert (71) used to insert into the PCB board (1) is located on the side of one of the high-speed signal groups (8) away from the other high-speed signal group (8). The end of the conversion insert (71) used to mate with the optical module is located between the two high-speed signal groups (8).

2. The crimp-type high-speed connector transmission system according to claim 1, characterized in that: The low-speed signal group (7) further includes a low-speed signal ferrule (72). Both the low-speed signal ferrule (72) and the conversion ferrule (71) include a module segment (721) for interoperability with the optical module and a fisheye segment (724) for insertion into the PCB board (1). The low-speed signal ferrule (72) also includes a straight section (722) connected to its own module segment (721) and a retractable section (723) connecting its own fisheye segment (724) and the straight section (722). The retractable section (723) is inclined. The conversion ferrule (721)... 1) It also includes a first straight segment (711) for connecting to its own module segment (721), a second straight segment (712) for connecting to its own fisheye segment (724), and a jumper (713) connecting the first straight segment (711) and the second straight segment (712). The fisheye segment (724) and the second straight segment (712) of the transformation plug (71) are located on the side of one of the high-speed signal groups (8) away from the other high-speed signal group (8), and the first straight segment (711) of the transformation plug (71) is located between the two high-speed signal groups (8).

3. The crimp-type high-speed connector transmission system according to claim 2, characterized in that: The jumper (713) is independent of the first straight segment (711) and the second straight segment (712).

4. The high-speed crimp connector transmission system according to claim 3, characterized in that: The upper row of plugs (5) also includes a plug plastic part (9), in which the fisheye section (724), the first straight section (711) and the second straight section (712) are inserted. The plug plastic part (9) has at least two connecting slots (91). The connection between the first straight section (711) and the jumper (713) is located in one of the connecting slots (91), and the connection between the second straight section (712) and the jumper (713) is located in the other connecting slot (91).

5. The high-speed crimp connector transmission system according to claim 2, characterized in that: The second straight segment (712) includes a widened portion (7121) for connection with a jumper wire (713) and an extension portion (7122) connected to the widened portion. The length of the widened portion (7121) along the arrangement direction from the first straight segment (711) to the second straight segment (712) is greater than the length of the extension portion (7122) along the arrangement direction from the first straight segment (711) to the second straight segment (712).

6. The high-speed crimp connector transmission system according to claim 1, characterized in that: The low-speed signal group (7) also includes two low-speed signal ferrules (72), and the end of the conversion ferrule (71) used for mating with the optical module is located between the ends of the two low-speed signal ferrules (72) used for mating with the optical module.

7. The high-speed crimp connector transmission system according to claim 2, characterized in that: Two low-speed signal ferrules (72) are provided, and the fisheye segments (724) of the two low-speed signal ferrules (72) are centrally symmetrical.

8. The high-speed crimp connector transmission system according to claim 1, characterized in that: The high-speed signal group (8) includes a grounding spring (83) and at least two grounding plugs (82), and the grounding spring (83) is electrically connected to each grounding plug (82) in the same high-speed signal group (8).

Images