Disclosure of Invention
The application aims to provide a high-speed differential signal connector with a shielding effect, which solves the problems that in the existing high-speed differential signal connector, a return flow path between signal pairs is large and crosstalk is easy to occur between the signal pairs because a female-end signal transmission module is not provided with a shielding plate.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a take high-speed differential signal connector of shielding effect, including mutual grafting complex public end connector and female end connector, above-mentioned female end connector includes female end base and a plurality of female end signal transmission module of pegging graft side by side on female end base, above-mentioned female end signal transmission module includes signal transmission module and fixes the metal shield board on signal transmission module, the interval is provided with the protruding structure more than two on the side of above-mentioned metal shield board, and the top of above-mentioned protruding structure is provided with the bump, above-mentioned protruding structure is protruding towards the outside of metal shield.
Preferably, when the metal shielding plate is mounted on the signal transmission module, the protruding structure is located between adjacent differential signal pairs of the signal transmission module.
Preferably, the female-end signal transmission module comprises a module housing, a signal transmission reed and a plastic package module, wherein a plurality of concave cavities are formed in the module housing, the signal transmission reed is arranged in the concave cavities, and the plastic package module covers the concave cavities and seals the concave cavities, so that the signal transmission reed forms a sealed signal channel.
Preferably, the plastic package modules are in one-to-one correspondence with the concave cavities, the adjacent plastic package modules on the concave cavities are connected into a whole through transverse ribs, and the vicinity of two end parts of the plastic package modules is connected with the transverse ribs.
Preferably, the two transverse ribs at two ends of the plastic package module are arranged in a 90-degree direction, and the module shell is provided with grooves matched with the transverse ribs.
Preferably, a pressing plate is arranged at a side edge of the module shell, which is provided with concave cavities, at intervals, the pressing plate is positioned between the adjacent concave cavities, a square boss is arranged on the pressing plate, and a gap is reserved between a transverse rib close to the pressing plate and the pressing plate.
Preferably, the concave cavities are distributed according to the differential signal routing paths of the signal transmission reeds, and the cavity edges of the concave cavities are spaced from the differential routing edges of the differential signal transmission reeds.
Preferably, the two signal transmission reeds form differential pairs and are arranged in the same concave cavity, and the two signal transmission reeds in each differential pair are symmetrically arranged.
Preferably, the surface of the module case is covered with a plating layer.
Preferably, the male connector includes a male base and a male signal transmission module inserted in parallel on the male base, and when the male connector and the female connector are inserted, the male signal transmission module and the female signal transmission module are inserted and matched with each other.
Compared with the prior art, the application has the beneficial effects that at least one of the following is adopted:
1. according to the application, the metal shielding plate is arranged on the signal transmission module, and more than two protruding structures are arranged on the metal shielding plate, and after the metal shielding plate is fixed with the female end signal transmission modules, the plurality of female end signal transmission modules are arranged in parallel, so that the metal shielding plate is communicated with shielding shells of the adjacent female end signal transmission modules at multiple points, and the reflux path is shortened. Meanwhile, the convex structure can form ground holes around the signal holes in the signal transmission module and is positioned between every two signal differential pairs, so that crosstalk between signals is reduced.
2. According to the application, the plurality of concave cavities are arranged on the module shell in the female end signal transmission module of the high-speed differential signal connector, the cavities are distributed according to the differential wiring paths, and the signal transmission reeds are fixed in the concave cavities, so that a closed signal channel is formed, and finally, the concave cavities are distributed on three sides around the transmitted differential signals in an electroplating way, so that the mutual interference between differential signal pairs can be reduced.
3. The application limits the structure of the plastic package module, and the arrangement of the transverse ribs is used for the convenience of installation on one hand, and on the other hand, the differential pair formed by the signal transmission reeds can be better fixed, so that the signal crosstalk between the differential pairs is further reduced.
4. According to the application, the pressing plate and the square boss are arranged on the module shell, the square boss has elasticity, insufficient contact caused by uneven boss heights in all directions among a plurality of components can be avoided, meanwhile, a gap is reserved between the plastic package module and the pressing plate, and the boss in the direction of the end face of the packaging pressing plate has elasticity.
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.
Referring to fig. 1 to 4, an overall structure schematic diagram of a high-speed differential connector is shown in fig. 1, and the high-speed differential signal connector includes a male end connector and a female end connector which are mutually inserted and matched, the female end connector includes a female end base 400 and a plurality of female end signal transmission modules which are inserted and connected on the female end base 400 in parallel, the high-speed differential signal connector can realize stable transmission of signals through the insertion and matching of the male end connector and the female end connector, the female end signal transmission module includes a signal transmission module 100 and a metal shielding plate 200 fixed on the signal transmission module 100, the metal shielding plate 200 is mounted on the signal transmission module and can shield differential signals, and through the arrangement of the metal shielding plate, when the plurality of female end signal transmission modules are arranged in parallel, the metal shielding plate can realize multi-point communication with the adjacent female end signal transmission modules, so that a backflow path of differential signals is further shortened.
As shown in fig. 2, female-end module fixing grooves 402 for placing female-end signal transmission modules are respectively provided on the female-end base, and inserting grooves 401 for extending differential pairs are also provided in the female-end base 400 along the array, and in the inserting grooves 401, contact terminals of signal transmission reeds of the female-end signal transmission modules are mutually matched with pins of the male-end signal transmission modules in the male-end connector.
Fig. 4 shows a schematic structural view of a metal shielding plate according to the present application, in which two or more protruding structures 206 are disposed at intervals on one side of the metal shielding plate 200, and protruding points 207 are disposed above the protruding structures 206, and the protruding structures 206 protrude toward the outside of the metal shielding plate 200. The bump structure 206 is a bump formed on one side of the shield plate body 200 and extending upward on the side, and the bump is used for contacting with an adjacent signal transmission module. In this embodiment, after the metal shielding plate is fixed to the male pin or the female signal transmission module, the plurality of signal transmission modules are arranged in parallel, and the protruding structure 206 can enable the metal shielding plate to be in multipoint communication with the shielding shell of the adjacent signal transmission module, so that the reflow path is shortened.
When the metal shield 200 is mounted on the signal transmission module, the bump structure 206 is located between adjacent differential signal pairs of the signal transmission module. As shown in fig. 5, when the bump structure 207 on the metal shielding plate is mounted on the signal transmission module, the ground hole 208 is formed between the differential signal pairs 301, so the bump structure should be located between the adjacent differential signal pairs of the signal transmission module, thereby reducing crosstalk between signals.
In addition, more than two bridge structures 201 are arranged on the metal shielding plate 200 at intervals, and the bridge structures 201 are protruded towards the outer side of the metal shielding plate 200. The bridge structure 201 on the metal shielding plate 200 is an arch bridge structure protruding from the metal shielding plate 200, and the purpose of arranging more than two bridge structures 201 on the metal shielding plate 200 is that after the metal shielding plate 200 is fixed with the signal transmission modules, the plurality of signal transmission modules are arranged in parallel, so that the metal shielding plate 200 and the shielding shells of the adjacent signal transmission modules can be communicated in multiple points, and the backflow path is shortened.
Further, for another embodiment of the present application, on the basis of the above embodiment, more than two bridge structures 201 face the same direction of the metal shielding plate 200, and the bridge structures face the same direction, so that the stress angle is consistent when the stress is applied, the stability of the structure is convenient, and a strip-shaped through groove 202 is arranged at the position, corresponding to the bridge structures 201, on the metal shielding plate 200, two ends of the bridge structures 201 are respectively and movably connected to two ends of the strip-shaped through groove 202, the strip-shaped through groove 202 is a hollow groove body with two closed ends, and the strip-shaped through groove is arranged to facilitate the connection of the bridge structures, and also to enable the shielding plate to be in more stable multi-point communication with the signal transmission module; on the other hand, the bridge structure 201 is movably connected to two ends of the strip-shaped through groove 202, that is, the bridge structure 201 can rotate at a certain angle, so that a hinged mode can be adopted for realizing the structure. Through simulation analysis of mechanics, the bridge structure has smaller stress and equivalent stress when being rotated at a certain angle compared with the fixed connection of the bridge structure, namely, stronger interaction force can be born in a movable connection mode, so that the whole structure is more stable.
The two or more bridge structures 201 are uniformly arranged according to the diagonal manner, that is, the center points of the two or more bridge structures 201 are distributed on the same diagonal, that is, the metal shielding plates 200 are uniformly arranged according to the diagonal direction, and through the arrangement manner, a plurality of communication points of the metal shielding plates 200 and the signal transmission module are uniformly distributed on different transverse lines or longitudinal lines, so that the multi-point communication of different positions between the metal shielding plates 200 and the shielding shells of the signal transmission module is further realized, and the backflow path is shortened.
The signal transmission module 100 comprises a module shell 101, a signal transmission reed 102 and a plastic package module 103, wherein a plurality of concave cavities 104 are formed in the module shell 101, the signal transmission reed 102 is arranged in the concave cavities 104, and the plastic package module 103 covers the concave cavities 104 and seals the concave cavities 104, so that the signal transmission reed 102 forms a sealed signal channel; for the female-end signal transmission module in the embodiment, through the structure, the concave cavities are plated and distributed on three surfaces around the transmission differential signal, so that interference between differential signal pairs can be reduced.
The surfaces of the module case 101 are covered with plating layers. The electroplated layer can be an electroplated nickel, gold, silver, copper and other conductive metal materials; in addition, the module housing 101 may be made of any suitable material that can make the module housing 101 conductive, such as adding metal fiber and graphite into the module housing; after the surface of the module shell 101 is electroplated, concave cavities are electroplated on three surfaces around the transmission differential signal, so that signal interference between differential signal pairs is shielded; in addition, due to the skin effect of the metal in the signal transmission process, the module housing 101 can be approximately regarded as metal after being electroplated and surrounds the differential signal to serve as a differential signal reflux path, so that interference between the differential signal pair is reduced, and the signal reflux path is shortened.
Meanwhile, in order to mate the male and female connectors, the male connector includes a male base 300 and a male signal transmission module 600 inserted in parallel to the male base 300, like the female connector, and the male signal transmission module 600 and the female signal transmission module 100 are inserted and mated with each other when the male and female connectors are inserted.
Fig. 7 shows a schematic structural view of the module case 101, and according to the display of the module case 101, a concave cavity 104 is provided on the surface of the module case 101, and the concave cavity 104 takes a curved groove shape, and the concave cavity 104 extends from one side of the module case 101 toward an adjacent side.
Fig. 8 shows a schematic structural view of the signal transmission reed 102 mounted on the module case 101, and the signal transmission reed 102 is mounted along the direction of the concave cavity 104 when the signal transmission reed 102 is mounted in the concave cavity 104. During installation, the plastic package module 103 is divided into two blocks, each two signal transmission reeds 102 form a differential pair, and one signal transmission reed 102 is installed to cover one plastic package module 103, so that the two signal transmission reeds 102 between the same differential pair form a distance, and are convenient to form fit with the contact pin in the male signal transmission module.
Further, according to another embodiment of the present application, on the basis of the above embodiment, the plastic package modules 103 are in one-to-one correspondence with the concave cavities 104, the plastic package modules 103 on adjacent concave cavities 104 are connected into a whole through transverse ribs 107, and the vicinity of two end portions of the plastic package modules 103 are connected with the transverse ribs 107. To the horizontal muscle 107 on this plastic envelope module 103, all be provided with on each spill cavity 104 with the plastic envelope module of this spill cavity 104 looks adaptation, in order to embody the stability after the structure equipment, consequently link as an organic wholely the plastic envelope module on each spill cavity 104 through horizontal muscle 107 to all be provided with horizontal muscle near the both ends of plastic envelope module 103 and connect fixedly, conveniently stabilize the difference pair that signal transmission reed 102 constitutes and fix, realize the convenience of structure installation and overall structure's steadiness simultaneously.
Further, according to another embodiment of the present application, on the basis of the above embodiment, two transverse ribs 107 at two ends of the plastic package module 103 are disposed in a 90 degree direction, and a groove 108 adapted to the transverse ribs 107 is disposed on the module housing 101. In fig. 9, the connection structure of the plastic package module 103 and the transverse ribs 107 is shown, and as seen in fig. 9, in this embodiment, three plastic package modules 103 are respectively arranged corresponding to three concave cavities 104, the plastic package modules 103 are connected into a whole through two transverse ribs 107 arranged in a 90-degree direction on the plastic package modules 103, and when in installation, only the plastic package modules 103 connected into a whole through the transverse ribs 107 need to be covered on the concave cavities 104 according to corresponding positions, so that the structure is stable and convenient to install, and meanwhile, in order to enable the transverse ribs 107 to be attached to the module housing 101 more, grooves 108 matched with the transverse ribs 107 are formed on the module housing 101; in addition, in order to minimize the mutual interference between the differential signal pairs by using all the grooves or concave cavities, it is preferable to set the two transverse ribs 107 on the plastic package module 103 in a 90 degree direction, so as to avoid any slotting to affect the crosstalk between signals.
Further, according to another embodiment of the present application, on the basis of the above embodiment, a pressing plate 109 is disposed at a side edge of the module housing 101 where the concave cavity 104 is formed at intervals, the pressing plate 109 is located between adjacent concave cavities, a square boss 1091 is disposed on the pressing plate, and a gap is formed between a transverse rib 107 near the pressing plate 109 and the pressing plate. Through setting up clamp plate 109 and set up square boss 1091 in the outside of clamp plate 109, square boss 1091 has elasticity, can avoid the contact inadequately that each square boss height is uneven to lead to between a plurality of subassemblies, has the clearance simultaneously between horizontal muscle 107 department on plastic module 103 and clamp plate 109 can guarantee that the square boss of clamp plate terminal surface has elasticity.
Further, for another embodiment of the present application, on the basis of the above embodiment, the two signal transmission reeds 102 are installed in the same concave cavity 104 as each other to form a differential pair, and the two signal transmission reeds 102 in each differential pair are symmetrically arranged. In this embodiment, in order to mate with the pin of the male signal transmission module in the male connector, two signal transmission reeds 102 need to be fixed in the same concave cavity 104, and the two signal transmission reeds 102 form a differential pair for mating with the pin of the male signal transmission module, and the contact terminals of the signal transmission reeds 102 mated with the pin of the male signal transmission module are in opposite wavy bending arrangement and perform signal transmission with the pin of the male signal transmission module.
Further, for another embodiment of the present application, based on the above embodiment, the concave cavity 104 is distributed according to the differential signal routing paths of the signal transmission reed 102, and a cavity edge of the concave cavity 104 and a differential routing edge of the differential signal transmission reed 102 have a space. In this embodiment, the cavities are distributed according to differential paths, so that on one hand, the return paths are shortened as much as possible, and the crosstalk between differential signals is reduced, and on the other hand, the concave cavities are at a certain distance from the differential signals, so as to perform impedance matching better.
The differential routing path extends from one side of the module case 101 to an adjacent side of the module case 101, and the contact terminal 1021 of the signal transmission reed 102 extends to the outside of the module case 101. In this embodiment, the paths of the differential wires are defined, and since the signal transmission reed 102 is to transmit signals, both ends of the signal transmission reed 102 may transmit signals with other structures, so according to the transmission principle of the signal connector, the signal transmission reed 102 is in an arc-shaped curved arrangement, and therefore the paths of the differential wires extend from one side of the module housing 101 to the adjacent side of the module housing 101, so that the contact terminal 1021 of the signal transmission reed 102 is matched with the male pin, and the contact terminal 1021 of the signal transmission reed 102 extends to the outside of the module housing 101.
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.