CN109830849B - Module structure for high-speed connector and high-speed connector - Google Patents
Module structure for high-speed connector and high-speed connector Download PDFInfo
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- CN109830849B CN109830849B CN201910251888.9A CN201910251888A CN109830849B CN 109830849 B CN109830849 B CN 109830849B CN 201910251888 A CN201910251888 A CN 201910251888A CN 109830849 B CN109830849 B CN 109830849B
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- 230000008054 signal transmission Effects 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
The application discloses a module structure for a high-speed connector and the high-speed connector, wherein the module structure comprises a signal transmission module and a shielding component arranged on the signal transmission module, differential signal terminals are arranged in the signal transmission module at intervals, differential pair pins are arranged in the differential signal terminals, and the vertical distance A between the shielding component and the differential signal terminals in the signal transmission module and the center distance B between the shielding component and the differential pair pins satisfy the following conditions: a is less than B/8. The application ensures that the impedance change of the differential pair is as small as possible by limiting the distance between the shielding component and the signal wiring, thereby improving the performance of the connector.
Description
Technical Field
The application relates to the technical field of high-speed connectors, in particular to a module structure for a high-speed connector and the high-speed connector.
Background
The high-speed connector is widely applied to communication technology, is a connector commonly used for large-scale communication equipment, ultra-high performance servers, supercomputers, industrial computers and high-end storage equipment, and mainly has the functions of connecting a single board with a back board, forming a 90-degree vertical structure between the single board and the back board, transmitting high-speed differential signals or single-ended signals and transmitting large current.
With the continuous improvement of communication technology, the requirements on data transmission rate and transmission quality are also increasing. The existing high-speed connector has serious crosstalk between signals due to the limitation of various structures in the connector, and the transmission quality of data is affected.
On the other hand, because the fitting of the parts is not tight enough, the parts can be shifted in the plugging process of the connector, and the consistency of the impedance of the differential pair is affected.
Disclosure of Invention
The application aims to provide a module structure for a high-speed connector and the high-speed connector, which solve the problem that the impedance consistency of a differential pair is affected due to the fact that parts are not tightly matched and displacement among the parts possibly occurs in the process of plugging the connector.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a modular structure for high-speed connector, includes signal transmission module and sets up the shielding subassembly on signal transmission module, is provided with differential signal terminal in the aforesaid signal transmission module at intervals, has the differential pair pin in the aforesaid differential signal terminal, and the perpendicular distance A and the differential pair pin centre-to-centre spacing B of the aforesaid shielding subassembly and the differential signal terminal in the aforesaid signal transmission module satisfy: a is less than B/8.
Preferably, the signal transmission module and the shielding assembly are subjected to plastic packaging through a secondary plastic sealing plate, a plurality of T-shaped columns are arranged on the secondary plastic sealing plate, and through holes matched with the T-shaped columns are formed in the signal transmission module and the shielding assembly.
Preferably, the differential signal terminals are arranged in pairs at intervals and are encapsulated in a plastic encapsulation shell, and a cavity is formed in the plastic encapsulation shell along the routing path of the differential signal terminals and exposes the differential signal terminals.
Preferably, the shielding assemblies on adjacent signal transmission modules are in contact with each other, wherein the shielding assembly on one signal transmission module is provided with an elastic structure protruding towards the shielding assembly on the adjacent signal transmission module, and the shielding assembly on the adjacent signal transmission module is provided with a ground wire structure overlapped with the elastic structure.
Preferably, the shielding assembly includes a first shielding member and a second shielding member, the second shielding member is fixed on the first shielding member through a guide post, the elastic structure is disposed on the second shielding member, the ground routing structure is disposed on the first shielding member, and a Y-shaped connection structure is formed between the second shielding member and the ground routing structure of the first shielding member.
Preferably, the first shielding member includes a shielding member body adapted to the size of the signal transmission module and a ground tail portion disposed at one side of the shielding member body, the ground trace structure and the ground tail portion are respectively disposed at two adjacent sides of the shielding member body, the ground trace structure includes a plurality of contact terminals disposed at intervals, and the contact terminals are disposed between adjacent differential signal terminals.
Preferably, the second shield is mounted above the ground trace structure of the first shield, and the number of the elastic structures is identical to and corresponds to the number of the contact terminals of the ground trace structure one by one.
Preferably, two second elastic structures with the same extending direction are further arranged on one side of each elastic structure on the second shielding piece, and the two second elastic structures are respectively located in different strip-shaped through grooves.
Preferably, a protruding frame is provided at a side edge of the second shield member, the protruding frame is in contact with a side edge of the second shield member in the adjacent shield assembly, and the protruding frame mounting positions on the adjacent shield assemblies are opposite.
A high-speed connector comprises a mounting base and the module structure inserted in the mounting base.
Compared with the prior art, the application has the beneficial effects that:
the signal transmission module and the shielding component are tightly combined together in a secondary plastic packaging mode, so that the distance between the shielding component and the signal wiring is ensured, and the consistency of the impedance of the wiring area is ensured; on the other hand, the distance between the shielding component and the signal wiring is limited, so that the impedance change of the differential pair is ensured to be as small as possible, and the performance of the connector is improved.
The application adopts the shielding component formed by combining the first shielding component and the second shielding component, and the elastic structure and the ground wiring structure are arranged at corresponding positions in the shielding component, and the elastic structure on the shielding component is mutually overlapped with the ground wiring structure on the adjacent shielding component, so that the reflux path is shortened as much as possible, and the crosstalk between differential pairs is improved.
Drawings
Fig. 1 is a schematic structural view of the present application.
Fig. 2 is a schematic diagram of a stacked arrangement of the module structure of the present application.
Fig. 3 is a schematic view of a single module structure of the present application.
Fig. 4 is a schematic diagram illustrating a distance between a shielding component and a signal trace according to the present application.
Fig. 5 is a schematic structural diagram of a signal transmission module according to the present application.
Fig. 6 is a schematic structural view of a secondary plastic sealing plate according to the present application.
Fig. 7 is a positional relationship diagram between adjacent shield assemblies of the present application.
Fig. 8 is a side view of the application between adjacent shield assemblies.
Fig. 9 is a cross-sectional view taken along line B-B in fig. 8 in accordance with the present application.
Fig. 10 is a schematic structural view of a shielding assembly according to the present application.
Fig. 11 is a schematic structural view of the first shield of the present application.
Fig. 12 is a schematic structural view of the second shield of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Fig. 1 shows a schematic diagram of a combined structure of a module structure and a mounting base in the high-speed connector, in which the module structure is plugged into the interior of the mounting base 40, and the module structure is mounted in the mounting base 40 to serve as a female connector of the high-speed connector, and the female connector is then plugged and matched with a male connector to finally form a complete connector structure.
Fig. 2 and 3 show a module structure for use in the high-speed connector, in which a signal transmission module 10, a shielding assembly 20 and a secondary plastic board 30 are included, differential signal terminals 101 are disposed in the middle of the signal transmission module 10, and the differential signal terminals 101 are arranged in pairs at intervals and are plastic-sealed inside a plastic-sealed housing 102, and in the differential signal terminals 101 appearing in pairs, differential pair pins 104, a differential pair body 105 and differential pair contact tails 106 are included, the differential pair pins 104 and the differential pair contact tails 106 are disposed at both ends of the differential pair body 105, respectively, and the differential pair pins 104 are plugged with the male-end connector structure;
the paths covered by the differential signal terminals 101 are differential signal wires, in order to ensure the distance between the shielding component 20 and the differential signal wires and ensure the impedance consistency of the wire area, the signal transmission module 10 and the shielding component 20 are encapsulated together through the secondary plastic encapsulation plate 30, and in order to ensure that the impedance change of the differential pair is as small as possible, the vertical distance a between the shielding component 20 and the differential signal terminals 101 in the signal transmission module 10 and the center distance B between the differential pair pins satisfy the following conditions: a is less than B/8; refer to the distance diagram of the shielding assembly and the signal trace in fig. 4.
Referring to the schematic structural diagram of the secondary plastic sealing plate in fig. 6, in order to increase the bonding force between the signal transmission module 10 and the shielding assembly 20 during the secondary plastic sealing process, a plurality of T-shaped columns 301 are disposed on the secondary plastic sealing plate 30, and through holes 11,12 adapted to the T-shaped columns 301 are disposed on the signal transmission module 10 and the shielding assembly 20.
In addition, fig. 5 shows a schematic structural diagram of the signal transmission module, and the plastic package 102 is provided with a cavity 103 along the routing path of the differential signal terminal 101, and exposes the differential signal terminal 101. The plastic package shell 102 is provided with the cavity along the wiring path of the differential signal terminal, so that raw materials can be saved, and the module strength can be increased; meanwhile, the cavity exposes the wiring, so that air isolation can be performed to match impedance, and the signal transmission performance of the connector is improved.
With further reference to fig. 7 to 9, the shielding members 20 on adjacent ones of the above-mentioned signal transmission modules 10 are in contact with each other, wherein the shielding member 20 on one of the signal transmission modules 10 is provided with an elastic structure 201 protruding toward the shielding member 20 on the adjacent signal transmission module 10, and the shielding member 20 on the adjacent signal transmission module 10 has a ground trace structure 202 overlapping with the elastic structure 201, by which a return path can be shortened as much as possible, and crosstalk between differential pairs can be improved.
As shown in fig. 10, the shielding assembly 20 includes a first shielding member 21 and a second shielding member 22, the second shielding member 22 is fixed on the first shielding member 21 by a guide post 23, and in order to make the positional relationship between the second shielding member 22 and the first shielding member 21 more stable, the relative position size between the first shielding member and the second shielding member is satisfied, and the contact portion between the first shielding member 21 and the second shielding member 22 is further provided with two or more evenly arranged connection points 24. The connection mode is not limited to laser welding, and can be performed by adopting ultrasonic friction welding, flip riveting technology and the like, so that the relative position between two parts can be positioned with high precision.
The first shielding member 21 comprises a shielding member main body 211 which is matched with the size of the signal transmission module 10 and a grounding tail 212 which is arranged on one side of the shielding member main body 211, the grounding wire structure 202 and the grounding tail 212 are respectively positioned on two adjacent sides of the shielding member main body 211, the second shielding member 22 is fixedly arranged on the shielding member main body 211 of the first shielding member 21, the elastic structure 201 in the shielding assembly 20 is arranged on the second shielding member 22, and meanwhile, the second shielding member 22 in each shielding assembly 20 and the grounding wire structure 202 of the first shielding member 21 form a Y-shaped structure from the side, so that the backflow path is more shortened, and the crosstalk between differential pairs of signals is reduced.
As shown in fig. 11, a schematic structural view of the first shield member 21 in the shield assembly 20 is shown, in which first shield member 21 the ground trace structure 202 includes a plurality of contact terminals 213 arranged at intervals, and when the shield assembly is mounted on the signal transmission module, the contact terminals 213 on the first shield member 21 are positioned between adjacent signal terminals 101, that is, the signal terminals 101 and the contact terminals 213 on the first shield member 21 are sequentially arranged at intervals to intersect.
The second shielding member 22 is mounted above the ground trace structure 202 of the first shielding member 21, the second shielding member 22 is divided into two parts, one part is a connection part with the first shielding member 21, the connection part is positioned at the upper part of the second shielding member 22, the other part is a contact part provided with an elastic structure 201 for making contact with other structures, the contact part is positioned at the lower part of the second shielding member 22, and the connection part and the contact part are not in the same plane; the upper part of the second shield 22 is fixed to the shield main body 211 of the first shield 21 by fixing posts and other connection means, which may be laser welding, ultrasonic friction welding, a flip-rivet process, etc., and the lower part of the second shield 22, i.e., the contact part, is located above the ground trace structure 202 of the first shield 21, while the number of elastic structures 201 on the second shield 22 is identical to and corresponds to the number of contact terminals 213 of the ground trace structure 202 in the adjacent shield assembly one by one.
As shown in fig. 12, a plurality of strip-shaped through grooves 221 are disposed at intervals on the contact portion of the second shielding member 22, one end of the elastic structure 201 is connected to the edge of the strip-shaped through groove 221, and the other end of the elastic structure 201 faces and contacts the contact terminal 213 of the corresponding ground wire structure 202, so as to achieve the purposes of shortening the reflow path and improving crosstalk between differential pairs.
In order to further shorten the return path and reduce crosstalk between differential pairs, two second elastic structures 223 with the same extending direction are further arranged on one side of each elastic structure 201 on the second shielding member 22, and the two second elastic structures 223 are respectively located in different strip-shaped through grooves 221; with respect to the second elastic structure, when the shielding assembly is applied to a connector, the second elastic structure 223 can contact with the U-shaped shielding member in the male terminal base, so as to contact with the U-shaped shielding member in the male terminal base, shorten the reflow path and reduce the signal crosstalk, and the protruding direction of the second elastic structure 223 on the second shielding member 22 is opposite to the protruding direction of the elastic structure 201 on the second shielding member 22.
In addition, a protruding frame 222 is provided at a side edge of the second shielding member 22, the protruding frame 222 is in contact with a side edge of the second shielding member 22 in the adjacent shielding member 20, and the protruding frame 222 on the adjacent shielding member 20 is installed in a reverse position, which mainly acts to shorten the reflow path and reduce crosstalk between signals, while also increasing the strength of the structure.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application as broadly described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the application.
Although the application has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.
Claims (10)
1. A modular structure for a high-speed connector, characterized by: the shielding assembly comprises a signal transmission module (10) and a shielding assembly (20) arranged on the signal transmission module (10), wherein differential signal terminals (101) are arranged in the middle of the signal transmission module (10), differential pair pins (104) are arranged in the differential signal terminals (101), and the vertical distance A between the shielding assembly (20) and the differential signal terminals (101) in the signal transmission module (10) and the center distance B between the differential pair pins meet the following conditions: a is less than B/8.
2. The modular structure for a high-speed connector according to claim 1, wherein: the signal transmission module (10) and the shielding assembly (20) are subjected to plastic package through a secondary plastic sealing plate (30), a plurality of T-shaped columns (301) are arranged on the secondary plastic sealing plate (30), and through holes (11, 12) matched with the T-shaped columns (301) are formed in the signal transmission module (10) and the shielding assembly (20).
3. The modular structure for a high-speed connector according to claim 1, wherein: the differential signal terminals (101) are arranged in pairs at intervals and are molded in a plastic package shell (102), and cavities (103) are formed in the plastic package shell (102) along the wiring paths of the differential signal terminals (101) and expose the differential signal terminals (101) to the outside.
4. The modular structure for a high-speed connector according to claim 1, wherein: the shielding assemblies (20) on adjacent signal transmission modules (10) are in contact with each other, wherein the shielding assembly (20) on one signal transmission module (10) is provided with an elastic structure (201) protruding towards the shielding assembly (20) on the adjacent signal transmission module (10), and the shielding assembly (20) on the adjacent signal transmission module (10) is provided with a ground wiring structure (202) overlapped with the elastic structure (201).
5. The modular structure for a high-speed connector as recited in claim 4, wherein: the shielding assembly (20) comprises a first shielding piece (21) and a second shielding piece (22), the second shielding piece (22) is fixed on the first shielding piece (21) through a guide post (23), the elastic structure (201) is arranged on the second shielding piece (22), the ground routing structure (202) is arranged on the first shielding piece (21), and a Y-shaped connecting structure is formed between the second shielding piece (22) and the ground routing structure (202) of the first shielding piece (21).
6. The modular structure for a high-speed connector as recited in claim 5, wherein: the first shielding piece (21) comprises a shielding piece main body (211) which is matched with the size of the signal transmission module (10) and a grounding tail part (212) which is arranged on one side of the shielding piece main body (211), the grounding wire structure (202) and the grounding tail part (212) are respectively positioned on two adjacent sides of the shielding piece main body (211), the grounding wire structure (202) comprises a plurality of contact terminals (213) which are arranged at intervals, and the contact terminals (213) are positioned between adjacent differential signal terminals (101).
7. The modular structure for a high-speed connector as recited in claim 6, wherein: the second shielding piece (22) is arranged above the ground wire structure (202) of the first shielding piece (21), and the number of the elastic structures (201) is consistent with and corresponds to the number of the contact terminals (213) of the ground wire structure (202) one by one.
8. The modular structure for a high-speed connector as recited in claim 5, wherein: two second elastic structures (223) with the same extending direction are further arranged on one side of each elastic structure (201) on the second shielding piece (22), and the two second elastic structures (223) are respectively located in different strip-shaped through grooves (221).
9. The modular structure for a high-speed connector as recited in claim 5, wherein: a raised frame (222) is arranged at the side edge of the second shielding piece (22), the raised frame (222) is in contact with the side edge of the second shielding piece (22) in the adjacent shielding assembly (20), and the installation positions of the raised frames (222) on the adjacent shielding assemblies (20) are opposite.
10. A high-speed connector, characterized by: a module structure according to any one of claims 1 to 9, comprising a mounting base (40) and a plug-in connection in the mounting base (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251888.9A CN109830849B (en) | 2019-03-29 | 2019-03-29 | Module structure for high-speed connector and high-speed connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251888.9A CN109830849B (en) | 2019-03-29 | 2019-03-29 | Module structure for high-speed connector and high-speed connector |
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| Publication Number | Publication Date |
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| CN109830849A CN109830849A (en) | 2019-05-31 |
| CN109830849B true CN109830849B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910251888.9A Active CN109830849B (en) | 2019-03-29 | 2019-03-29 | Module structure for high-speed connector and high-speed connector |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563784B (en) * | 2019-09-26 | 2022-09-16 | 庆虹电子(苏州)有限公司 | Connector and transmission piece thereof |
| CN212162125U (en) * | 2019-11-14 | 2020-12-15 | 华为技术有限公司 | Differential pair module, connector, communication device and shielding assembly |
| CN114665330B (en) * | 2020-12-22 | 2023-01-06 | 华为技术有限公司 | Connector, function board and board level framework |
| CN113471776B (en) * | 2021-02-09 | 2022-07-29 | 中航光电科技股份有限公司 | High-speed orthogonal connector |
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| CN109830849A (en) | 2019-05-31 |
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