Shielding sheet, terminal module, occupation module and backboard connector

Abstract

The invention provides a shielding sheet, a terminal module, an occupying module and a backboard connector, and belongs to the field of connecting devices. The shielding sheet comprises a sheet body and a grounding fisheye arranged at the edge of one side of the sheet body, the grounding fisheye close to the near edge end is a large-specification grounding fisheye, and the grounding fisheye close to the far edge end is a small-specification grounding fisheye. The occupying module comprises an occupying insulator and a shielding plate arranged in the occupying insulator, one side edge of the shielding plate is provided with a grounding fisheye, the grounding fisheye close to the near edge end is a large-specification grounding fisheye, and the grounding fisheye close to the far edge end is a small-specification grounding fisheye. The terminal module comprises the shielding sheet. The backboard connector comprises the terminal module and the occupation module. The connection strength between the backboard connector and the printed board is high, and the backboard connector is not easy to loosen from the printed board.

Description

Technical Field

[0001] This invention belongs to the field of connection devices, and in particular relates to shielding sheets, terminal modules, spacer modules, and backplane connectors. Background Technology

[0002] Backplane connectors are typically press-fitted onto printed circuit boards (PCBs) using a fisheye nozzle. The fisheye nozzle maintains a certain holding force with the PCB, preventing the connector from detaching. However, as the signal terminals in backplane connectors become increasingly densely packed, the size of the fisheye nozzles on these connectors is decreasing.

[0003] Small-sized fisheye connectors are inherently weaker, resulting in a weaker connection with the printed circuit board (PCB). This increases the risk of the backplane connector detaching from the PCB under vibration or external force. See appendix. Figure 8 In the prior art, some backplane connectors 9 are equipped with a housing 10, and a connecting lug 11 that can be locked to the printed circuit board by bolts is provided on the housing 10. While this arrangement can prevent the backplane connector from coming loose, it also leads to higher cost and more complicated assembly of the backplane connector. In addition, the housing of the backplane connector will also occupy space on the printed circuit board, which may lead to insufficient available space on the printed circuit board in some cases. Summary of the Invention

[0004] The purpose of this invention is to provide a shielding sheet to solve the technical problem in the prior art where the backplane connector is not strong enough after being pressed onto the printed circuit board and is easy to loosen from the printed circuit board. Another object of the present invention is to provide a terminal module to solve the above-mentioned technical problems; Another object of the present invention is to provide a placeholder module to solve the above-mentioned technical problems; Another object of the present invention is to provide a backplane connector to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution for the placeholder module provided by this invention is as follows: The spacer module includes a spacer insulator and a shield plate disposed within the spacer insulator. One side edge of the shield plate is provided with a grounding eye for crimping with a grounding hole on a printed circuit board. The area of ​​the shield plate where the grounding eye is provided is the crimping area. The crimping area has a near-edge end for approaching the edge of the printed circuit board and a far-edge end for approaching the center of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near-edge end is a large-size grounding eye, and the grounding eye near the far-edge end is a small-size grounding eye.

[0006] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0007] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0008] The beneficial effects are as follows: The placeholder module provided by this invention belongs to the category of inventions that change the relationship between elements. This invention increases the size of the grounding fisheye near the edge of the printed circuit board on the placeholder module, which increases the strength of this part of the grounding fisheye and enhances the reliability of the connection with the printed circuit board. This, in turn, enhances the overall reliability of the connection between the backplane connector and the printed circuit board, preventing the backplane connector from detaching from the printed circuit board. At the same time, the grounding fisheye far from the edge of the printed circuit board remains a small-sized grounding fisheye. This helps to control the overall weight of the backplane connector as much as possible, and also allows for a smaller size of the corresponding grounding mating hole on the printed circuit board, preventing it from occupying excessive space on the printed circuit board.

[0009] To achieve the above objectives, the technical solution for the shielding sheet provided by this invention is as follows: The shielding sheet includes a sheet body for fixing to one side of a terminal insulator and a grounding eye provided on one side edge of the sheet body for crimping with a grounding hole on a printed circuit board. The area of ​​the sheet body where the grounding eye is provided is a crimping area. The crimping area has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the center of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near edge end is a large-size grounding eye, and the grounding eye near the far edge end is a small-size grounding eye.

[0010] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0011] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0012] As a further improvement, a large-size grounding fisheye is integrated onto the shielding sheet.

[0013] As a further improvement, a large-size grounding fisheye is fixedly mounted on the shielding sheet by welding.

[0014] The beneficial effects are as follows: The shielding sheet provided by this invention is an invention that alters the relationship between elements. This invention increases the size of the grounding fisheyes near the edge of the printed circuit board on the shielding sheet, which increases the strength of these grounding fisheyes and enhances the reliability of their connection with the printed circuit board. This, in turn, enhances the overall reliability of the connection between the backplane connector and the printed circuit board, preventing the backplane connector from detaching from the printed circuit board. Simultaneously, the grounding fisheyes farther from the edge of the printed circuit board remain small-sized. This helps to control the overall weight of the backplane connector and also allows for smaller sizes of the corresponding grounding mating holes on the printed circuit board, minimizing the space occupied on the board.

[0015] To achieve the above objectives, the technical solution for the terminal module provided by this invention is as follows: A terminal module includes a terminal insulator. At least one side of the terminal insulator is fixedly provided with a shielding sheet. The shielding sheet includes a sheet body for fixing to one side of the insulator of the terminal module and a grounding eye provided at one edge of the sheet body for crimping with a grounding hole on a printed circuit board. The area of ​​the sheet body where the grounding eye is provided is a crimping area. The crimping area has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the center of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near edge end is a large-size grounding eye, and the grounding eye near the far edge end is a small-size grounding eye.

[0016] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0017] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0018] As a further improvement, a large-size grounding fisheye is integrated onto the shielding sheet.

[0019] As a further improvement, a large-size grounding fisheye is fixedly mounted on the shielding sheet by welding.

[0020] The beneficial effects are as follows: The terminal module provided by this invention is an improvement on the prior art. This invention increases the size of the grounding fisheyes near the edge of the printed circuit board on the shielding sheet, which increases the strength of these grounding fisheyes and enhances the reliability of the connection with the printed circuit board. This, in turn, enhances the overall reliability of the connection between the backplane connector and the printed circuit board, preventing the backplane connector from detaching from the printed circuit board. At the same time, the grounding fisheyes farther from the edge of the printed circuit board remain small-sized. This helps to control the overall weight of the backplane connector and also allows for smaller sizes of the corresponding grounding mating holes on the printed circuit board, minimizing the space occupied on the board.

[0021] To achieve the above objectives, the technical solution for the backplane connector provided by this invention is as follows: A backplane connector includes an insulating shell, on which a terminal module is mounted. The terminal module includes a terminal insulator. At least one side of the terminal insulator is fixedly provided with a shielding plate. The shielding plate includes a sheet body for fixing to one side of the insulator of the terminal module and a grounding eye provided at one edge of the sheet body for crimping with a grounding hole on a printed circuit board. The area of ​​the sheet body where the grounding eye is provided is a crimping area. The crimping area has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the center of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near edge end is a large-size grounding eye, and the grounding eye near the far edge end is a small-size grounding eye.

[0022] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0023] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0024] As a further improvement, a large-size grounding fisheye is integrated onto the shielding sheet.

[0025] As a further improvement, a large-size grounding fisheye is fixedly mounted on the shielding sheet by welding.

[0026] As a further improvement, the insulating shell is also equipped with the aforementioned placeholder modules, which are arranged alternately with the terminal modules.

[0027] The beneficial effects are as follows: The backplane connector provided by this invention is an improvement on the prior art. This invention increases the size of the grounding fisheye near the edge of the printed circuit board on the shielding sheet, which increases the strength of this part of the grounding fisheye and enhances the reliability of the connection with the printed circuit board. This, in turn, enhances the overall reliability of the connection between the backplane connector and the printed circuit board, preventing the backplane connector from detaching from the printed circuit board. At the same time, the grounding fisheye further away from the edge of the printed circuit board remains a small-sized grounding fisheye. This helps to control the overall weight of the backplane connector as much as possible, and also allows for a smaller size of the corresponding grounding mating hole on the printed circuit board, preventing excessive space occupation on the printed circuit board.

[0028] To achieve the above objectives, the technical solution for the terminal module provided by this invention is as follows: A terminal module includes a terminal insulator and a shielding sheet fixed to at least one side of the terminal insulator. The shielding sheet includes a sheet body and a small-sized grounding eye disposed on one side edge of the sheet body. A large-sized grounding eye is inserted and fixed or integrally injection molded on the insulator. The large-sized grounding eye is electrically connected to the shielding sheet. The side edge of the terminal module where the grounding eye is disposed has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the middle of the printed circuit board away from the edge of the printed circuit board. The large-sized grounding eye is disposed near the near edge end, and the small-sized grounding eye is disposed near the far edge end.

[0029] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0030] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0031] The beneficial effects are as follows: The terminal module provided by this invention is a pioneering invention. This invention replaces the grounding fisheyes near the edge of the printed circuit board (PCB) on the terminal module with larger-sized grounding fisheyes. This increases the strength of these grounding fisheyes and enhances the reliability of the connection with the PCB, thereby improving the overall reliability of the connection between the backplane connector and the PCB and preventing the backplane connector from detaching from the PCB. Simultaneously, the grounding fisheyes further from the edge of the PCB remain small-sized. This helps to control the overall weight of the backplane connector and also allows for smaller sizes of the corresponding grounding mating holes on the PCB, minimizing the space occupied on the PCB.

[0032] To achieve the above objectives, the technical solution for the backplane connector provided by this invention is as follows: A backplane connector includes an insulating shell on which a terminal module is mounted. The terminal module includes a terminal insulator and a shield fixed to at least one side of the terminal insulator. The shield includes a sheet body and a small grounding eye located at one edge of the sheet body. A large grounding eye is inserted into or integrally injection molded onto the insulator. The large grounding eye is electrically connected to the shield. The side edge of the terminal module where the grounding eye is located has a near edge for approaching the edge of the printed circuit board and a far edge for approaching the center of the printed circuit board away from the edge of the printed circuit board. The large grounding eye is located near the near edge, and the small grounding eye is located near the far edge.

[0033] As a further improvement, at least two large-size grounding fisheyes are provided, and the size of each large-size grounding fisheye gradually increases in the direction from the far end to the near end.

[0034] As a further improvement, at least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

[0035] As a further improvement, the insulating shell is also equipped with the aforementioned placeholder modules, which are arranged alternately with the terminal modules.

[0036] The beneficial effects are as follows: The backplane connector provided by this invention is an improvement on the prior art. This invention replaces the grounding fisheye near the edge of the printed circuit board on the terminal module with a larger-sized grounding fisheye. This increases the strength of this part of the grounding fisheye and enhances the reliability of the connection with the printed circuit board, thereby enhancing the overall reliability of the connection between the backplane connector and the printed circuit board and preventing the backplane connector from detaching from the printed circuit board. At the same time, the grounding fisheye further away from the edge of the printed circuit board remains a small-sized grounding fisheye. This helps to control the overall weight of the backplane connector as much as possible, and also allows for a smaller size of the corresponding grounding mating hole on the printed circuit board, preventing excessive space occupation on the printed circuit board. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the backplate connector in this invention; Figure 2 This is a schematic diagram of the terminal module in Embodiment 1 of the backplane connector of the present invention; Figure 3 This is a schematic diagram of the shielding sheet in Embodiment 1 of the backplane connector of the present invention; Figure 4 This is a schematic diagram of the spacer module in Embodiment 1 of the backplane connector of the present invention; Figure 5 This is a side view of Embodiment 1 of the backplate connector in this invention; Figure 6 This is a top view of Embodiment 1 of the backplate connector in this invention; Figure 7 This is a diagram showing the stress state of the backplate connector during use in Embodiment 1 of the present invention. Figure 8 This is a schematic diagram of the existing technology.

[0038] Explanation of reference numerals in the attached figures: 1. Insulating shell; 2. Terminal module; 21. Terminal insulator; 211. Plastic protrusion; 22. Signal terminal; 221. Signal spring; 222. Signal fisheye; 23. Shielding plate; 231. Connecting hole; 232. Plate body; 233. Shielding grounding fisheye; 3. Placeholder module; 31. Placeholder insulator; 32. Shielding plate; 33. Placeholder grounding fisheye; 4. Fixing plate; 5. Positioning buckle plate; 8. Printed circuit board; 9. Backplane connector; A. Near-side end; B. Far-side end; C. Large fisheye area; D. Small fisheye area; E. Large-size grounding fisheye; F. Small-size grounding fisheye. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the embodiments.

[0040] Specific embodiment 1 of the backplane connector provided by the present invention: A backplane connector, see attached Figure 1 The backplane connector includes an insulating shell 1 and terminal modules 2 and spacer modules 3 mounted on the insulating shell 1. It also includes a fixing piece 4 and a positioning buckle 5. Terminal modules 2 and spacer modules 3 are arranged alternately. Terminal modules 2 are used to transmit signals, and spacer modules 3 are used to occupy space and provide electromagnetic shielding between adjacent terminal modules 2. In this embodiment, the direction in which the backplane connector and the adapter connector are inserted is considered the front-rear direction, and the end of the backplane connector inserted into the adapter connector is considered its front end. The arrangement direction of the terminal modules 2 in the backplane connector is considered the left-right direction, and the direction perpendicular to both the front-rear and left-right directions is considered the top-bottom direction. The two ends of the backplane connector in the top-bottom direction are the top and bottom ends, respectively. The bottom end of the backplane connector is pressed against the printed circuit board.

[0041] See appendix Figure 2 Terminal module 2 includes terminal insulator 21, signal terminal 22, and shielding plate 23. The signal terminal 22 is fixed to the terminal insulator 21 by integral injection molding. One end of the signal terminal 22 extends from the front end of the terminal insulator 21 and forms a signal spring 221 for insertion with the signal contact on the adapter connector. The other end of the signal terminal 22 extends from the bottom end of the terminal insulator 21 and forms a signal fisheye 222. All signal springs 221 and all signal fisheyes 222 have the same specifications to ensure better transmission of differential signals.

[0042] A plastic protrusion 211 is provided on the terminal insulator 21, and a connecting hole 231 is provided on the shielding sheet 23 for the plastic protrusion 211 to pass through. After the plastic protrusion 211 passes through the connecting hole 231, the end of the plastic protrusion 211 is formed into a mushroom head structure by secondary hot riveting, thereby fixing the shielding sheet 23 to the insulator. See Appendix Figure 3The shielding sheet 23 includes a sheet body 232 and a grounding eye. A connection hole 231 is provided on the sheet body 232, and the grounding eye is provided at the bottom edge of the sheet body 232 and arranged along the edge.

[0043] See appendix Figure 4 The placeholder module 3 includes a placeholder insulator 31 and a shielding plate 32 integrally injection molded within the placeholder insulator 31. A grounding eye is also provided at the bottom edge of the shielding plate 32. The grounding eye on the shielding plate 23 is a shielding grounding eye 233, and the grounding eye on the shielding plate 32 is a placeholder grounding eye 33. The shape of the placeholder insulator 31 in the placeholder module 3 is similar to that of the terminal insulator 21 in the terminal module 2. Both the placeholder module 3 and the terminal module 2 can cooperate with the fixing plate 4 and the positioning buckle 5. However, the placeholder module 3 does not contain a signal terminal 22, nor does it have a spring or pin at its front end. The placeholder module 3 only serves as a placeholder and a shield.

[0044] Both the grounding fisheye and signal fisheye 222 are used for crimping with the printed circuit board. In this embodiment, the area on the backplane connector where the grounding fisheye and signal fisheye 222 are located is designated as the crimping area. After the backplane connector is crimped onto the printed circuit board, the front end of the crimping area is close to the edge of the printed circuit board, and the rear end of the crimping area is away from the edge of the printed circuit board and close to the center of the printed circuit board. The front end of the crimping area is designated as the near-side end A, and the rear end of the crimping area is designated as the far-side end B. For a single terminal module 2, placeholder module 3, and shielding sheet 23, there is also a crimping area, and its crimping area also has a near-side end A and a far-side end B. The crimping area, near-side end A, and far-side end B of these components correspond to the crimping area, near-side end A, and far-side end B of the backplane connector, respectively.

[0045] See appendix Figure 5 and attached Figure 6 The crimping area includes a large fisheye area C and a small fisheye area D. The large fisheye area C is located near the near-side end A, while the small fisheye area D is located near the far-side end B. The grounding fisheye in the large fisheye area C is a large-size grounding fisheye E, and the grounding fisheye in the small fisheye area D is a small-size grounding fisheye F. The size of the large-size grounding fisheye E is larger than that of the small-size grounding fisheye F.

[0046] The specifications of the grounding fisheye refer to at least one of its width and thickness. In this embodiment, the width of the large-size grounding fisheye E is greater than the width of the small-size grounding fisheye F, the height of the large-size grounding fisheye E is greater than the height of the small-size grounding fisheye F, and the thickness of the large-size grounding fisheye E is equal to the thickness of the small-size grounding fisheye F. In other embodiments, the thickness of the large-size grounding fisheye E can be made greater than the thickness of the small-size grounding fisheye F by extrusion deformation. The specifications of the grounding connection hole 231 on the printed circuit board corresponding to the large-size grounding fisheye E are also larger than the specifications of the grounding connection hole 231 corresponding to the small-size grounding fisheye F. The grounding connection hole 231 and the grounding fisheye have a corresponding and well-known specification matching relationship, which will not be elaborated further.

[0047] The large-size grounding fisheye E has greater structural strength than the small-size grounding fisheye F, and it is less prone to deformation. At the same time, the connection strength between the large-size grounding fisheye E and the printed circuit board after being pressed in is also greater than that between the small-size grounding fisheye F and the printed circuit board after being pressed in. Thus, the large-size grounding fisheye E is also less likely to come off the printed circuit board.

[0048] The backplane connector is press-fitted onto the printed circuit board as follows: Figure 7 As shown, the front end of the backplane connector 9 extends beyond the printed circuit board 8, making the backplane connector 9 susceptible to damage during insertion and removal. Figure 7 The force F acting in the direction indicated by the middle arrow will cause vibration to the backplane connector 9 during use. Figure 7 The equivalent force F in the direction indicated by the middle arrow causes the backplane connector 9 to tend to rotate around point O under the drive of this force F. At this time, the load borne by each grounding fisheye is different. The grounding fisheye closer to the edge of the printed circuit board 8 has a greater load. Therefore, the key to maintaining the stability of the backplane connector 9 lies in the strength of the grounding fisheyes close to the edge of the printed circuit board 8.

[0049] This invention enlarges the size of the grounding fisheye near the edge of the printed circuit board on the backplane connector. This increases the strength of this grounding fisheye and enhances the reliability of the connection with the printed circuit board, thereby improving the overall reliability of the connection between the backplane connector and the printed circuit board and preventing the backplane connector from detaching from the printed circuit board. Meanwhile, the grounding fisheye in the small fisheye area D remains a small-sized grounding fisheye F. This helps to control the overall weight of the backplane connector and also allows for a smaller size of the corresponding grounding mating hole on the printed circuit board, minimizing its space occupation.

[0050] The lighter the weight of the backplane connector, the weaker its inertial effect and the less affected it is by vibration. Under the same connection strength, a lighter backplane connector is less likely to detach from the printed circuit board. This invention retains the small-sized grounding fisheye F in the small fisheye area D, which avoids unnecessary weighting of the backplane connector, thereby making the backplane connector more stable.

[0051] The grounding mating hole on the printed circuit board that mates with the grounding fisheye in the small fisheye area D is small in size, which ensures that the grounding mating hole occupies less space on the printed circuit board, which is beneficial for wiring with the printed circuit board corresponding to the compact backplane connector.

[0052] In this embodiment, see Appendix Figure 3 and attached Figure 4 The shielding plate 23 has two large-sized grounding fisheyes E in its large fisheye area C, and the placeholder module 3 has two pairs of large-sized grounding fisheyes E in its large fisheye area C. The two large-sized grounding fisheyes E on the shielding plate 23 have different dimensions, with the larger one closer to the near edge A being larger. Similarly, the pair of large-sized grounding fisheyes E on the placeholder module 3 that is closer to the near edge A is slightly larger than the other pair of large-sized grounding fisheyes E.

[0053] This configuration allows for variations in the pressing force applied to the large-size grounding fisheye E onto the printed circuit board. Specifically, the closer to the edge A, the greater the pressing force. Grounding fisheyes with greater pressing force also exhibit greater retention force on the printed circuit board. This aligns with the load conditions borne by each grounding fisheye under lateral forces during backplane connector use, while also preventing significant abrupt changes in pressing force between the large fisheye area C and the small fisheye area D. Significant abrupt changes in pressing force between the large fisheye area C and the small fisheye area D could potentially cause the grounding fisheye in the large fisheye area C to buckle and deform during pressing.

[0054] Specific embodiment 2 of the backplane connector provided by the present invention: This embodiment is based on Embodiment 1, but differs in that the dimensions of all large-sized grounding fisheyes in the large fisheye area and the dimensions of all small-sized grounding fisheyes in the small fisheye area are the same. Compared to Embodiment 1, the grounding fisheyes in this embodiment only require two types of molds for production, making manufacturing more convenient.

[0055] Specific embodiment 3 of the backplane connector provided by the present invention: This embodiment is based on Embodiment 1, but differs in that the size of all grounding fisheyes on the shielding sheet gradually increases from the far end to the near end. Therefore, in this embodiment, there are no obvious large and small fisheye areas on the shielding sheet; the grounding fisheyes near the near end are large-sized, and the grounding fisheyes near the far end are small-sized. The grounding fisheyes on the placeholder module are arranged in a similar manner to those on the shielding sheet.

[0056] Compared to Implementation Method 1, the size variation between the large-size and small-size grounding fisheyes in this implementation method is small, and the change in the pressing force of the grounding fisheyes is also small, making it less likely for the grounding fisheyes to kneel down and deform.

[0057] Specific embodiment 4 of the backplane connector provided by the present invention: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the backplane connector in this embodiment only includes a terminal module and does not have a placeholder module.

[0058] Specific embodiment 5 of the backplane connector provided by the present invention: This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the large-size grounding fisheye is processed separately and then fixed on the terminal insulator of the terminal module. The corresponding position on the shielding sheet in the terminal module is no longer processed with a large-size grounding fisheye.

[0059] Specifically, the large-size grounding fisheye in this embodiment includes a crimping part and a connecting part, wherein the crimping part is the main body of the fisheye, and the connecting part is a plate integrally formed with the crimping part.

[0060] In the terminal module, the connecting portion is located at the bottom end of the terminal insulator and is integrally injection molded inside the terminal insulator during injection molding. The thickness direction of the connecting portion is parallel to the front-rear direction of the backplane connector, that is, the thickness direction of the connecting portion is perpendicular to the thickness direction of the terminal insulator. In other embodiments of this implementation, the connecting portion may also be interference-fitted into the terminal insulator.

[0061] Meanwhile, the large-sized grounding fisheye and the shielding plate need to make contact and conduction with the shielding plate to shorten the return current path. The shielding plate is provided with insertion notches for insertion with the connecting part. During assembly, the two ends of the connecting part in the left and right directions are respectively inserted into the grounding notches on the corresponding shielding plates, thereby achieving contact and conduction between the connecting part and the shielding plate.

[0062] Specific embodiments of the terminal module provided by this invention: This terminal module is the same as the terminal module in the above-described backplane connector embodiment, and will not be described again.

[0063] Specific implementation of the placeholder module provided by this invention: This placeholder module is the placeholder module in the above-described implementation of the backplane connector, and will not be described again.

[0064] Specific embodiments of the shielding sheet provided by the present invention: The shielding plate is the same as the shielding plate in the above-described embodiment of the backplane connector, and will not be described again.

[0065] 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 make modifications to the technical solutions described in the foregoing embodiments without creative effort, 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 placeholder module, characterized in that, It includes a spacer insulator (31) and a shielding plate (32) disposed within the spacer insulator (31). One side edge of the shielding plate (32) is provided with a grounding eye for crimping with a grounding hole on the printed circuit board. The area of ​​the shielding plate (32) where the grounding eye is provided is the crimping area. The crimping area has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the middle of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near edge end is a large-size grounding eye, and the grounding eye near the far edge end is a small-size grounding eye.

2. The placeholder module according to claim 1, characterized in that, There are at least two large-size grounding fish eyes, and the size of each large-size grounding fish eye gradually increases from the far end to the near end.

3. The placeholder module according to claim 2, characterized in that, At least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

4. A shielding sheet, characterized in that, It includes a sheet (232) for fixing to one side of the terminal insulator and a grounding eye provided on one side edge of the sheet (232) for crimping with a grounding hole on the printed circuit board. The area of ​​the sheet (232) where the grounding eye is provided is a crimping area. The crimping area has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the middle of the printed circuit board away from the edge of the printed circuit board. The grounding eye near the near edge end is a large-size grounding eye, and the grounding eye near the far edge end is a small-size grounding eye.

5. The shielding sheet according to claim 4, characterized in that, There are at least two large-size grounding fish eyes, and the size of each large-size grounding fish eye gradually increases from the far end to the near end.

6. The shielding sheet according to claim 5, characterized in that, At least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

7. The shielding sheet according to any one of claims 4-6, characterized in that, A large-scale grounding fisheye is integrated on the shielding sheet (23).

8. The shielding sheet according to any one of claims 4-6, characterized in that, Large-sized grounding fisheyes are fixedly installed on the shielding sheet (23) by welding.

9. A terminal module, including a terminal insulator (21), characterized in that, At least one side of the terminal insulator (21) is fixedly provided with a shielding sheet (23) as described in any one of claims 4-8.

10. A backplane connector, including an insulating shell (1), characterized in that, The insulating shell (1) is equipped with the terminal module (2) as described in claim 9.

11. The backplane connector according to claim 10, characterized in that, The insulating shell (1) is also equipped with a occupant module (3) as described in any one of claims 1-3, and the occupant module (3) and the terminal module (2) are arranged alternately.

12. A terminal module, characterized in that, The terminal module (2) includes a terminal insulator (21) and a shield (23) fixed to at least one side of the terminal insulator (21). The shield (23) includes a sheet body (232) and a small grounding eye provided on one side edge of the sheet body (232). A large grounding eye is inserted and fixed or integrally injection molded on the insulator. The large grounding eye is electrically connected to the shield (23). The side edge of the terminal module (2) where the grounding eye is provided has a near edge end for approaching the edge of the printed circuit board and a far edge end for approaching the middle of the printed circuit board away from the edge of the printed circuit board. The large grounding eye is provided near the near edge end, and the small grounding eye is provided near the far edge end.

13. The terminal module according to claim 12, characterized in that, There are at least two large-size grounding fish eyes, and the size of each large-size grounding fish eye gradually increases from the far end to the near end.

14. The terminal module according to claim 13, characterized in that, At least two small-sized grounding fish eyes are provided, and each small-sized grounding fish eye gradually increases in size from the far end to the near end, so that all grounding fish eyes gradually increase in size from the far end to the near end.

15. A backplane connector, including an insulating housing, characterized in that, The insulating shell (1) is equipped with a terminal module (2) as described in any one of claims 12-14.

16. The backplane connector according to claim 15, characterized in that, The insulating shell (1) is also equipped with a occupant module (3) as described in any one of claims 1-3, and the occupant module (3) and the terminal module (2) are arranged alternately.

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