CN109546388B - Backboard connector - Google Patents

Abstract

The application discloses a backboard connector, which comprises a male end base and a female end base, wherein the female end base is inserted on the male end base, a non-deflectable odd-even module is arranged on the female end base, the first wiring group and the second wiring group both comprise a differential pair and a reflux piece arranged on one side of the differential pair, a through groove is formed in a second connecting part of the reflux piece, a plurality of communication bridges are arranged in the through groove and divide the through groove into a plurality of sections, the male end base comprises a shell, the bottom of the shell is a substrate, a plurality of contact pin slots are formed in the substrate, the contact pins are arranged in the contact pin slots, the differential pair and the reflux piece are connected with corresponding contact pins, the bottom of the substrate is inwards recessed to form a groove body, an end protection piece is arranged in the groove body, through holes are formed in the end protection piece, and the plug ends of the contact pins penetrate through the through holes. The beneficial effects of the application are as follows: the device has the advantages of short reflux path, impedance matching, high structural strength and low crosstalk.

Description

Backboard connector

Technical Field

The present application relates to electrical connectors, and in particular to backplane connectors.

Background

Besides meeting the general performance requirements, the electric connector is required to meet the requirements of good contact, reliable work and convenient maintenance.

The high-speed connector is used for large-scale communication equipment, ultra-high performance servers, supercomputers, industrial computers, high-end storage equipment and the like, and the market scale of the high-speed connector is rapidly growing along with the rapid development of the communication industry, the electronic industry and the internet industry.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provide the backboard connector with short reflux path and stable structure.

The aim of the application is achieved by the following technical scheme: the back board connector comprises a male end base and a female end base, wherein the female end base is inserted on the male end base, a non-deflectable odd-even module is arranged on the female end base, the odd-even module comprises an odd module and an even module which are mutually clung, a second wiring group is arranged on the odd module, a first wiring group is arranged on the even module, the first wiring group and the second wiring group both comprise a differential pair and a reflux piece arranged on one side of the differential pair, a through groove is formed in a second connecting part of the reflux piece, a plurality of communication bridges are arranged in the through groove, the through groove is divided into a plurality of sections by the communication bridges, the male end base comprises a shell, the bottom of the shell is a substrate, a plurality of contact pin slots are formed in the substrate, the contact pins are arranged in the contact pin slots, the differential pair and the reflux piece are connected with corresponding contact pins, a groove body is concavely formed at the bottom of the substrate, an end protection piece is arranged in the groove body, a through hole is formed in the end protection piece, and the plug end of the contact pins penetrate through the through hole.

Preferably, the odd module is provided with a plurality of odd module differential wiring cavities for arranging the second wiring group, the even module is provided with a plurality of even module differential wiring cavities for arranging the first wiring group, the odd module differential wiring cavities and the even module differential wiring cavities are distributed in a staggered manner, the even module opposite to the odd module differential wiring cavities is provided with a first bump, the first bump is matched in the odd module differential wiring cavities, the odd module opposite to the even module differential wiring cavities is provided with a second bump, the second bump is matched in the even module differential wiring cavities, the back of the first bump is provided with a first groove, the wall thickness of the first groove is uniform, the back of the second bump is provided with a second groove, and the wall thickness of the second groove is uniform.

Preferably, the odd module differential wiring cavities are three, and are divided into a fourth differential wiring cavity, a fifth differential wiring cavity and a sixth differential wiring cavity from short to long in sequence, second bumps are arranged on odd modules positioned on two sides of the fourth differential wiring cavity, the fifth differential wiring cavity and the sixth differential wiring cavity, the even module differential wiring cavities are also three, and are divided into a first differential wiring cavity, a second differential wiring cavity and a third differential wiring cavity from short to long in sequence, first bumps are arranged on even modules positioned on two sides of the first differential wiring cavity, the second differential wiring cavity and the third differential wiring cavity, and at least one connecting part is arranged in the first differential wiring cavity, the second differential wiring cavity, the third differential wiring cavity, the fourth differential wiring cavity, the fifth differential wiring cavity and the sixth differential wiring cavity.

Preferably, the substrate is provided with a plurality of air pockets, the air pockets are blind holes, the air pockets are also distributed in rows, the row where the air pockets are located is located between the rows where the adjacent pin slots are located, each pin slot comprises a grounding slot and a differential pair pin slot, the grounding slots in the same row separate each differential pair pin slot, and the connecting lines in the row direction between the adjacent differential pair pin slots in two adjacent rows intersect with the air pockets.

Preferably, the even module is provided with a first positioning column and a second positioning column which are staggered, the odd module is provided with a first positioning hole corresponding to the first positioning column, and the odd module is provided with a second positioning hole corresponding to the second positioning column.

Preferably, the differential pair comprises a first contact, a first connecting part and a first plug connector, wherein the first contact is connected with one end of the first connecting part, the other end of the first connecting part is connected with the first plug connector, the reflux piece further comprises a second contact and a second plug connector, the second contact is connected with one end of the second connecting part, and the other end of the second connecting part is connected with the second plug connector.

Preferably, the female end base is provided with a mounting groove for mounting the odd-even module, the rear side wall of the mounting groove extends upwards to form a rear side plate, the rear side plate is provided with a first limiting hole, the front side wall of the mounting groove is provided with a second limiting hole, the front side walls of the odd module and the even module are aligned and provided with wedge-shaped positioning blocks, the wedge-shaped positioning blocks are mounted in the second limiting holes, the even module is provided with elastic hooks mounted in the first limiting holes, and the left side wall and the right side wall of the mounting groove extend upwards to form a rib separating wall.

Preferably, a plurality of strip-shaped grooves are formed in the bottom of the substrate, the strip-shaped grooves are located on the central line between the rows of adjacent contact pin slots, a plurality of reinforcing columns are arranged on the strip-shaped grooves, the bottom surfaces of the reinforcing columns do not protrude out of the bottom surface of the shell, limiting columns are arranged in the grooves, U-shaped notches matched with the limiting columns are formed in the end portions of the end protection sheets, positioning holes matched with the reinforcing columns are formed in the end protection sheets, and the bottom surfaces of the end protection sheets do not protrude out of the bottom surface of the shell.

Preferably, a plurality of slots are formed in the front side wall of the female end base, positioning convex blocks are formed in the rear side wall of the female end base, a U-shaped groove for installing the female end base is formed in the male end base, an inserting block is arranged on the front inner side wall of the U-shaped groove, a positioning groove is formed in the rear side wall of the U-shaped groove, the inserting block is matched with and installed in the corresponding slot, and the positioning convex blocks are matched with and installed in the positioning groove.

Preferably, the insertion ends of the pin slots are in a shape like a Chinese character 'yi', the insertion ends of the pin slots without the side wires are in a shape like a Chinese character 'yi', the insertion ends of the pin slots with the side wires are in a shape like a cross, the cross slots are formed by orthogonal combination of wide slots and narrow slots, the width of the wide slots is larger than that of the narrow slots, the width and the length of the narrow slots are consistent with those of the Chinese character 'yi', the Chinese character 'yi' slots are distributed at one end heads of the pin slots in the row, and the ends of the pin slots in the adjacent row are opposite.

The application has the following advantages:

1. the through grooves are formed in the reflow parts, so that impedance matching is realized, the material requirements of the reflow parts are reduced, and the production cost is reduced;

2. the communication bridge shortens the reflow path, effectively reduces crosstalk and increases the structural strength of the reflow element;

3. the odd-even module changes the transmission medium in the area around the wires of the first wire group and the second wire group from air into an insulator with a cavity formed by the odd module, the first bump and the even module and the second bump through the first bump and the second bump, and the dielectric constant of the air is lower than that of plastic, so that the dielectric constant of the transmission medium in the wire area is changed, and impedance matching is realized;

4. the back of the first lug is provided with a first groove, the back of the second lug is provided with a second groove, a cavity formed by the first groove and the second groove is an air cavity, and the dielectric constant of air in the air cavity is lower than that of plastic, so that the dielectric constant of a transmission medium is changed, and the air cavity formed by the first groove and the second groove can be used for adjusting impedance to enable the impedance of the odd-even module to be matched;

5. the odd-even module realizes front and back side positioning of the odd-even module through the elastic hooks and the wedge-shaped positioning blocks, and the odd-even module is further prevented from deflecting by arranging the rib separating wall, so that the positive position of the terminal of the product pressed on the PCB is ensured to meet the requirements.

6. The plastic medium is arranged around the straight slot, so that matching impedance can be realized; providing a cross slot that allows the pin to be partially in contact with air, which has a lower dielectric constant than plastic, thereby enhancing the electrical isolation of the pin inserted into the cross slot;

7. each group of differential pair pins share one air pocket, an air channel formed by the air pocket reduces dielectric constant, electrical isolation between the differential pair pins of adjacent columns is enhanced, differential signal pairs of the adjacent columns are distributed in a staggered manner, and the distance between the adjacent differential pair pins is increased, so that mutual interference between the differential pair pins is reduced, and signal crosstalk is reduced;

8. the air pocket is the blind hole, compares with current through-hole, and the structural strength of its basement is higher, is provided with bar groove and spliced pole moreover, under the light low consumable condition of guaranteeing public end base, can furthest's increase air pocket to the area proportion of the basement that the air pocket occupied is big, thereby the air channel grow that forms has strengthened the electrical isolation between the adjacent contact pin of being listed as, has reduced signal crosstalk.

9. The end protection sheet is arranged, so that the plug end of the contact pin passes through the end protection sheet, and after the contact pin cuts the connecting skin, the plate with the contact pin notch not electroplated is protected by the end protection sheet, so that the plate at the contact pin notch is not exposed in the air, and the service life of the contact pin is ensured.

Drawings

FIG. 1 is a schematic diagram of a parity module;

FIG. 2 is a schematic diagram of an exploded view of a parity module;

FIG. 3 is a schematic diagram of the structure of an odd module;

FIG. 4 is a schematic diagram of the structure of an even module;

FIG. 5 is a schematic diagram of a configuration in which a first trace group is mounted to an even module;

FIG. 6 is a schematic diagram of a structure in which the odd module is mounted with a second trace group;

FIG. 7 is a schematic diagram showing the distribution of the first grooves;

FIG. 8 is a schematic diagram showing the distribution of the second grooves;

FIG. 9 is a schematic diagram of a first trace set;

FIG. 10 is a schematic front view of the first trace group;

FIG. 11 is a schematic diagram of the structure of the present application;

FIG. 12 is a schematic view of the structure of the female base;

FIG. 13 is a schematic view of the installation of an elastic hanger;

FIG. 14 is a schematic view of the structure of the present application;

FIG. 15 is a schematic view of a male end base;

FIG. 16 is a second schematic structural view of the male end base;

FIG. 17 is a schematic diagram of the distribution of cavitation;

FIG. 18 is a schematic diagram of the distribution of the in-line slots and cross slots;

FIG. 19 is a schematic view of the structure of the end shield;

FIG. 20 is a schematic view of a cross slot configuration;

FIG. 21 is a schematic view of a pin configuration;

in the figure: : 1-even module, 2-odd module, 3-first wiring group, 4-second wiring group, 5-first bump, 6-second bump, 7-connecting part, 8-odd module differential wiring cavity, 9-even module differential wiring cavity, 11-first differential wiring cavity, 12-second differential wiring cavity, 13-third differential wiring cavity, 21-fourth differential wiring cavity, 22-fifth differential wiring cavity, 23-sixth differential wiring cavity, 41-first positioning column, 42-first positioning hole, 43-second positioning column, 44-second positioning hole, 51-first groove, 61-second groove, 31-differential pair, 32-reflow element, 311-first contact, 312-first connecting part, 313-first plug connector, 321-second contact, 322-second connection part, 323-communication bridge, 324-through slot, 325-second plug connector, 100-female terminal base, 101-mounting slot, 102-partition wall, 103-first limit hole, 104-rear side plate, 105-second limit hole, 106-elastic hook, 107-odd-even module, 108-wedge-shaped positioning block, 140-male terminal base, 141-U-shaped slot, 142-plug connector, 143-positioning slot, 144-slot, 145-positioning lug, 201-through hole, 202-end guard, 203-positioning hole, 204-limit post, 205-U-shaped notch, 206-slot body, 207-plug terminal, 208-plug pin, 301-housing, 302-base, 303-pin slots, 304-air pockets, 305-reinforcement posts, 306-bar slots, 307-straight slots, 308-cross slots, 331-ground slots, 332-differential pair pin slots, 333-wide slots, 334-narrow slots.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the terms "upper," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship conventionally put in use of the inventive product, only for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-21, the back board connector comprises a male end base 140 and a female end base 100, the female end base 100 is inserted on the male end base 140, a plurality of slots 144 are formed in the front side wall of the female end base 100, the slots 144 are arranged side by side at intervals, a rib is formed between two adjacent slots 144 after the slots 144 are formed, the rib can ensure the structural strength of the female end base 100, as shown in fig. 13, a positioning lug 145 is formed in the rear side wall of the female end base 100, as shown in fig. 15, a U-shaped groove 141 for installing the female end base 100 is formed in the male end base 140, an inserting block 142 is formed in the front inner side wall of the U-shaped groove 141, a positioning groove 143 is formed in the rear side wall of the U-shaped groove 141, the inserting block 142 is matched and installed in the corresponding slot 144, the inserting block 142 is in interference fit with the slot 144, further, an opening wedge-shaped opening is formed in the inserting end of the slot 144, the positioning lug 145 is matched and installed in the positioning groove 143, the positioning lug is matched and is matched with the positioning groove, the positioning lug 145 is matched and is matched with the positioning lug, and the positioning lug 145 is matched with the positioning lug, so that the female end base 100 can not be installed in the female end base 100, and the female end base 100 can be quickly installed, and the female end base 100 can not be installed quickly, and the female end base 100 can be installed quickly, and the end base 100 can be installed quickly and the end base can be easily and the end base can be installed.

In this embodiment, the female end base 100 is provided with a non-deflectable odd-even module 107, as shown in fig. 1, the odd-even module 107 includes an odd module 2 and an even module 1 that are mutually clung, as shown in fig. 2, 3 and 4, a first positioning column 41 and a second positioning column 43 that are staggered are provided on the even module 1, a first positioning hole 42 corresponding to the first positioning column 41 is provided on the odd module 2, and a second positioning hole 44 corresponding to the second positioning column 43 is provided on the odd module 2, preferably, the first positioning column 41 is provided at the upper right corner of the even module 1, and the second positioning columns 43 are plural and are provided at the bottom of the even module 1, further, the second positioning hole 44 is a blind hole, the connection between the first positioning column 41 and the first positioning hole 42 is an interference fit, and the connection between the second positioning column 43 and the second positioning hole 44 is also an interference fit, when the first positioning column 41 and the first positioning column 42 and the second positioning column 43 are well matched with the second positioning hole 44, and the edges of the even module are flush with each other.

In this embodiment, the odd module 2 is provided with the second wire group 4, the even module 1 is provided with the first wire group 3, as shown in fig. 2 to 6, the odd module 2 is provided with a plurality of odd module differential wire cavities 8 for arranging the second wire group 4, the even module 1 is provided with a plurality of even module differential wire cavities 9 for arranging the first wire group 3, in this embodiment, as shown in fig. 3, the odd module differential wire cavities 8 are three and are sequentially divided into fourth differential wire cavities 21, fifth differential wire cavities 22 and sixth differential wire cavities 23 from short to long, further, the fourth differential wire cavities 21 are located at the inner sides of the odd module 2, the sixth differential wire cavities 23 are located at the outer sides of the odd module 2, as shown in fig. 4, the even module differential wire cavities 9 are also three, and are sequentially divided into first differential wire cavities 11, second differential wire cavities 12 and third differential wire cavities 13 from short to long, the further differential wire cavities 11 are located at the inner sides of the third differential wire cavities 13, and the third differential wire cavities 13 are located at the outer sides of the third differential wire cavities 13, and the fourth differential wire cavities 21 are located at the outer sides of the third differential wire cavities 13, and the fourth differential wire cavities 13 are further located at the inner sides of the differential wire cavities 13.

In this embodiment, as shown in fig. 2-6, a first bump 5 is disposed on an even module 1 facing an odd module differential wiring cavity 8, the first bump 5 is matched in the odd module differential wiring cavity 8, a second bump 6 is disposed on an odd module 2 facing an even module differential wiring cavity 9, the second bump 6 is matched in the even module differential wiring cavity 9, through the matching of the first bump 5 and the odd module differential wiring cavity 8 and the matching of the second bump 6 and the even module differential wiring cavity 9, the odd module 2 and the even module 1 are convenient to install, the installation stability of the odd module 2 and the even module 1 and the structural strength of the odd module are improved, the odd module and the even module are not easy to deform, materials for manufacturing the odd module and the even module are saved, the production cost is reduced, and in particular, the second bumps 6 are disposed on the odd module 2 at two sides of a fourth differential wiring cavity 21, a fifth differential wiring cavity 22 and a sixth differential wiring cavity 23, the even modules 1 positioned at the two sides of the first differential wiring cavity 11, the second differential wiring cavity 12 and the third differential wiring cavity 13 are respectively provided with a first bump 5, the even module differential wiring cavity 9 of the first wiring group 3 and the odd module differential wiring cavity 8 of the second wiring group 4 are formed into a cavity through the first bumps 5 and the second bumps 6, the transmission medium in the peripheral area of the wires of the first wiring group 3 and the second wiring group 4 is changed from air into an insulator with cavities formed by the odd modules 2, the first bumps 5 and the even modules 1 and the second bumps 6, the first bumps 5 and the second bumps 6 are made of plastics made of high polymer materials, the dielectric constant of the air is lower than that of the plastics, the dielectric constant of the transmission medium in the wiring area is changed, impedance matching can be achieved.

In this embodiment, at least one connecting portion 7 is disposed in the first differential routing cavity 11, the second differential routing cavity 12, the third differential routing cavity 13, the fourth differential routing cavity 21, the fifth differential routing cavity 22, and the sixth differential routing cavity 23, and the connecting portion 7 can increase structural stability of the odd module 2 and the even module 1, so that stability of installation of the first routing group 3 and the second routing group 4 is ensured.

In this embodiment, as shown in fig. 7 and 8, the back of the first bump 5 is provided with the first groove 51, the groove wall thickness of the first groove 51 is uniform, the back of the second bump 6 is provided with the second groove 61, the groove wall thickness of the second groove 61 is uniform, the cavity formed by the first groove 51 and the second groove 61 is an air cavity, the dielectric constant of air in the air cavity is lower than that of plastic, so that the dielectric constant of a transmission medium is changed, therefore, the air cavity formed by the first groove 51 and the second groove 61 can be used for adjusting impedance, so that the odd-even module is matched with the impedance, and the arrangement of the first groove 51 and the second groove 61 also reduces the weight of the odd-even module, reduces the consumption material and saves the production cost.

In this embodiment, as shown in fig. 9 and 10, the first routing group 3 and the second routing group 4 each include a differential pair 31 and a reflow element 32 disposed on one side of the differential pair 31, the differential pair 31 includes a first contact 311, a first connection portion 312 and a first connector 313, the first contact 311 is connected with one end of the first connection portion 312, the other end of the first connection portion 312 is connected with the first connector 313, further, the reflow element 32 includes a second contact 321, a second connection portion 322 and a second connector 325, the second contact 321 is connected with one end of the second connection portion 322, the other end of the second connection portion 322 is connected with the second connector 325, the first contact 311 and the second contact 321 are in close contact with the contact pin 208, the second connector 325 and the first connector 313 are mounted on the back plate, the first connection portion 312 is used for connecting the first contact 311 and the first connector 313, the other end of the first connection portion 312 is used for connecting the second contact 321 and the second connector 325, in a specific use process, the second contact 321 and the second connector 322 can be changed according to the actual requirement, the length of the first connection portion 312 and the second connector 325 is changed, and the first connector 325 is arranged in parallel with the first connector 32, and the first connector is arranged in a convenient way.

In this embodiment, the second connecting portion 322 of the reflow element 32 is provided with the through groove 324, the through groove 324 reduces the area of the reflow element 32, impedance matching is achieved, and the through groove 324 can reduce the requirement of the reflow element 32 on consumable materials, so that the production cost is saved, a plurality of communication bridges 323 are arranged in the through groove 324, the communication bridges 323 divide the through groove 324 into a plurality of sections, and the communication bridges 323 are used for enabling the reflow paths to be communicated for multiple times, shortening the reflow paths and effectively reducing crosstalk.

In this embodiment, as shown in fig. 11 to 13, a mounting groove 101 for mounting the parity module 107 is formed in the female end base 100, the rear side wall of the mounting groove 101 extends upward to form a rear side plate 104, a first limiting hole 103 is formed in the rear side plate 104, a second limiting hole 105 is formed in the front side wall of the mounting groove 101, wedge-shaped positioning blocks 108 are aligned on the front side walls of the odd module 2 and the even module 1, the wedge-shaped positioning blocks 108 are mounted in the second limiting holes 105, elastic hooks 106 mounted in the first limiting holes 103 are formed in the even module 1, the front end and the rear end of the parity module 107 are fixed through the elastic hooks 106 and the wedge-shaped positioning blocks 108, the parity module 107 cannot turn back and forth, the parity module 107 shares one elastic hook 106, accordingly consistency of contact pieces at the pressing plate positions between the parity modules 107 is guaranteed, the left side wall and the right side wall of the mounting groove 101 extend upward to form a rib separating wall 102, the parity module 107 cannot move left and right, accordingly position fixing of the parity module 107 is achieved, and the PCB products of the parity module 107 cannot meet the positive and negative press connection requirements.

In this embodiment, as shown in fig. 16, the bottom of the housing 301 is a base 302, a plurality of pin slots 303 are formed on the base 302, the pin slots 303 are distributed in rows, the pin slots 303 are in a straight shape, and the straight-shaped pin slots can be used for fixing the pins 208, so that the pins will not shake after being plugged, further, as shown in fig. 17, the pin slots 303 include a grounding slot 331 and a differential pair pin slot 332, the grounding pins are plugged into the grounding slot 331, the differential pair pin slots 332 are plugged into the differential pair pin slot, the grounding slots 331 in the same row separate each group of differential pair pin slots 332, and further, the grounding slots 331 and the differential pair pin slots 332 in adjacent rows are all staggered, so that the top of one row of pin slots 303 is started with the grounding slot 331, and the top of two rows of pin slots 3 adjacent to the row is started with the differential pair pin slot 332.

In this embodiment, as shown in fig. 17, a plurality of air pockets 304 are formed on the substrate 302, the air pockets 304 are blind holes, the air pockets 304 are also distributed in rows, the row in which the air pockets 304 are located is located between the rows in which the adjacent pin slots 303 are located, and the line between adjacent differential pair pin slots 332 in the adjacent rows intersects with the air pockets 304, so that air channels formed by the air pockets 304 are formed between the adjacent differential pair pin slots 332 in the adjacent rows, the dielectric constant of the transmission medium of the signals of the differential pair pins is reduced, signal crosstalk is reduced, further, the air pockets 304 and the insertion ends of the pin slots 303 are regular rectangular holes, four corners of the rectangular holes are rounded corners, further, the row in which the air pockets 304 are located is located on the central line between the rows in which the adjacent pin slots 303 are located, preferably, each group of the differential pair pin slots 332 is opposite to one of the air pockets 304, each set of differential pair pin slots 332 is made up of two differential pair pin slots 332, i.e., the center of the two differential pair pin slots 332 is equidistant from the line of the center of the corresponding air pocket 304, such that one set of differential pair pin slots 332 share one air pocket 304, since the ground slots 331 on adjacent columns and the differential pair pin slots 332 are staggered, such that the air pockets 304 of adjacent columns are also staggered, an air channel is formed through the air pocket 304, thereby changing the transmission medium of the differential pair pin signals, from plastic to air, the transmission medium dielectric constant of the differential pair pin signals is reduced due to the air having a lower dielectric constant than plastic, such that the air channel enhances the electrical isolation of the pins of one differential pair in one column from the adjacent pins of the differential pair in the adjacent column, and since each set of differential pair pin slots 332 are separated by the ground slots 331, therefore, the other side of the differential pair pins is adjacent to the grounding pins, the grounding pins provide shielding effect, and the differential pair pins of adjacent columns are distributed in a staggered manner, so that the distance between the differential pair pins is increased, the mutual interference between the differential pair pins is reduced, the signal crosstalk is increased, and the shielding effect of the adjacent differential pair pins is enhanced.

In this embodiment, as shown in fig. 18, the insertion end of the pin slot 303 with the side wire is a slot 307, the insertion end of the pin slot 303 with the side wire is a cross slot 308, the width and length of the slot 307 are the same as the width and length of the insertion end of the pin slot 303, so that the periphery of the pin inserted into the slot 307 is plastic, the impedance is high, and the impedance can be matched, the insertion end of the pin slot 303 with the side wire is a cross slot 308, further, as shown in fig. 20, the cross slot 308 is orthogonally combined by a wide slot 333 and a narrow slot 334, the width of the wide slot 333 is larger than the width of the narrow slot 334, and the width and length of the narrow slot 334 are consistent with the width and length of the slot 307, and when the pin 208 is inserted into the cross slot 308, the pin 208 is not in contact with the wide slot 333 locally, so that the pin 208 is in contact with air, and the air has a dielectric constant lower than that of the plastic, thereby enhancing the electrical isolation of the pin inserted into the cross slot 308.

In this embodiment, after the connecting skin is cut off, the plate material in the notch of the pin is exposed, if the plate material is not protected, the service life of the pin is affected, as shown in fig. 16, the bottom of the substrate 302 is concaved inwards to form a groove 206, an end protecting piece 202 is installed in the groove 206, a through hole 201 is formed in the end protecting piece 202, as shown in fig. 16 and 21, the plug end 207 of the pin 208 passes through the through hole 201, and after the connecting skin is cut off by the pin 208, the plate material in the notch of the pin 208 is protected by the end protecting piece, so that the plate material in the notch of the pin is not exposed in the air, thereby ensuring the service life of the pin 208.

In this embodiment, as shown in fig. 18, a plurality of strip-shaped grooves 306 are formed at the bottom of the substrate 302, and the strip-shaped grooves 306 are located on the central line between the columns of adjacent pin slots 303, and the strip-shaped grooves 306 are formed, so that the consumable and the weight of the substrate 302 can be reduced, and the production cost and the weight of the substrate 301 can be reduced, and the structural strength of the substrate 302 can be ensured, compared with the existing through holes, the structural strength of the substrate 302 is higher, and the area of the air cavity 304 can be enlarged while the structural strength of the substrate 302 is ensured, so that the area proportion of the air cavity 304 on the substrate is improved, and further, a plurality of reinforcing columns 305 are arranged on the strip-shaped grooves 306, the bottom surfaces of the reinforcing columns 305 are not protruded out of the bottom surface of the housing 301, preferably, the bottom surfaces of the reinforcing columns 305 are flush with the bottom surface of the housing 301, the structural strength of the substrate 302 is further increased, so that when pins are installed, the housing 301 is not deformed, the reliability of the male end base is improved, the stability of the pin connection is further, the reinforcing columns 305 are distributed, and the same in the number of the reinforcing columns 305, and the reliability of the housing 301 is ensured, and the service life is further ensured.

In this embodiment, a limiting post 204 is disposed in the groove 206, and a U-shaped notch 205 that is matched with the limiting post 204 is formed at the end of the end protection plate 202, and when the end protection plate is installed, the limiting post 204 is clamped in the U-shaped notch 205, so that the end protection plate 202 cannot move towards the direction of the limiting post 204.

In this embodiment, as shown in fig. 19, the end protection sheet 202 is provided with a positioning hole 203 that is matched with the reinforcing column 305, the bottom surface of the end protection sheet 202 does not protrude out of the bottom surface of the housing 301, and the bottom surface of the end protection sheet 202 is flush with the bottom surface of the housing 301, so that the contact area of the bottom surface of the housing 301 is increased, the mounting of the housing 301 is facilitated, and the end protection sheet 202 cannot move back and forth and left and right through the positioning hole 203 and the positioning matching of the reinforcing column 305, so that the position of the contact pin 208 is not interfered by the end protection sheet 202 in the use process, and the mounting stability of the contact pin 208 and the stability of signal transmission are ensured.

In this embodiment, as shown in fig. 18, the linear grooves 307 are distributed at one end of the pin grooves 303 in the row, and the ends of the pin grooves 303 in the adjacent row are opposite, i.e., the top of the insertion end of the pin groove 303 in one row is the linear groove 307, while the bottom is the cross groove 308, the top of the insertion end of the pin groove 303 in the row adjacent to the row is the cross groove 308, and the bottom is the linear groove 307.

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 (3)

1. Backboard connector, its characterized in that: the needle plug-in type connector comprises a male end base (140) and a female end base (100), wherein the female end base (100) is inserted on the male end base (140), a non-deflectable odd-even module (107) is arranged on the female end base (100), the odd-even module (107) comprises an odd module (2) and an even module (1) which are mutually clung, a second wiring group (4) is arranged on the odd module (2), a first wiring group (3) is arranged on the even module (1), the first wiring group (3) and the second wiring group (4) both comprise a differential pair (31) and a reflux member (32) arranged on one side of the differential pair (31), a through groove (324) is formed in the second connecting portion (322) of the reflux member (32), a plurality of communication bridges (323) are arranged in the through groove (324), the communication bridges (323) divide the through groove (324) into a plurality of sections, the male end base (140) comprises a shell (301), the bottom of the shell (301) is provided with pins (208) which are distributed in the corresponding plug-in the differential pair (31) and the pin plug-in grooves (303), the bottom of the base (302) is concaved inwards to form a groove body (206), an end protection sheet (202) is arranged in the groove body (206), a through hole (201) is formed in the end protection sheet (202), a plug end (207) of a plug pin (208) penetrates through the through hole (201), a plurality of odd module differential wiring cavities (8) for arranging a second wiring group (4) are formed in an odd module (2), a plurality of even module differential wiring cavities (9) for arranging a first wiring group (3) are formed in an even module (1), the odd module differential wiring cavities (8) and the even module differential wiring cavities (9) are distributed in a staggered mode, first bumps (5) are arranged on the even module (1) facing the odd module differential wiring cavities (8), the first bumps (5) are matched in the odd module differential wiring cavities (8), a plurality of even module differential wiring cavities (2) for arranging a second bump (6) are arranged on the odd module differential wiring cavities (2), the second bumps (6) are matched with the even module differential wiring cavities (6), the second bumps (6) are uniformly distributed on the groove walls (61) of the even module differential wiring cavities (6), the second bumps (61) are formed in the groove walls (61), the substrate (302) is provided with a plurality of air pockets (304), the air pockets (304) are blind holes, the air pockets (304) are also distributed in rows, the row in which the air pockets (304) are positioned is located between the rows in which the adjacent pin slots (303) are positioned, the pin slots (303) comprise a grounding slot (331) and a differential pair pin slot (332), each group of differential pair pin slots (332) are separated by the grounding slot (331) in the same row, a connecting line between adjacent differential pair pin slots (332) in the adjacent row in the row direction is intersected with the air pockets (304), a first positioning column (41) and a second positioning column (43) which are staggered are arranged on the even module (1), a first positioning hole (42) corresponding to the first positioning column (41) is formed on the odd module (2), a second positioning hole (44) corresponding to the second positioning column (43) is formed on the odd module (2), the differential pair pin slots (332) are connected with the first connecting part (312) and the first connecting part (312) of the first connecting part (312) and the second connecting part (313), the reflow element (32) further comprises a second contact (321) and a second plug connector (325), the second contact (321) is connected with one end of the second connecting portion (322), the other end of the second connecting portion (322) is connected with the second plug connector (325), the female end base (100) is provided with an installing groove (101) for installing the odd-even module (107), the rear side wall of the installing groove (101) extends upwards to form a rear side plate (104), the rear side plate (104) is provided with a first limiting hole (103), the front side wall of the installing groove (101) is provided with a second limiting hole (105), the front side walls of the odd-even module (2) and the even-even module (1) are provided with wedge-shaped positioning blocks (108) in alignment, the wedge-shaped positioning blocks (108) are installed in the second limiting hole (105), the even-even module (1) is provided with elastic hooks (106) installed in the first limiting hole (103), the left side wall and the right side wall of the installing groove (101) extend upwards to form a plurality of strip-shaped grooves (306), the strip-shaped grooves (306) are arranged on the bottom of the adjacent strip-shaped grooves (306), the bottom surface of strengthening post (305) does not bulge the bottom surface of casing (301), be provided with spacing post (204) in cell body (206), tip of end guard (202) seted up with spacing post (204) complex U type breach (205), set up on end guard (202) with strengthening post (305) complex locating hole (203), just the bottom surface of end guard (202) does not bulge the bottom surface of casing (301), the insertion end of contact pin slot (303) all is a font, and the side does not have the contact pin slot (303) insert the end and be a word groove (307), the side has the contact pin slot (303) insert the end and be cross groove (308), cross groove (308)) by wide groove (333) and narrow groove (334) quadrature combination, the width of wide groove (333) is greater than the width of narrow groove (334), just width and the length of narrow groove (334) with the width of a word groove (307) and the width of contact pin slot (303) are the same in the width of a word groove (307) and the contact pin slot (303) insert the opposite one end and the contact pin slot (303).

2. The backplane connector of claim 1, wherein: the three-phase differential wiring cavities (8) are divided into a fourth differential wiring cavity (21), a fifth differential wiring cavity (22) and a sixth differential wiring cavity (23) from short to long in sequence, second bumps (6) are arranged on the odd modules (2) on two sides of the fourth differential wiring cavity (21), the fifth differential wiring cavity (22) and the sixth differential wiring cavity (23), the even module differential wiring cavities (9) are also three, the even module differential wiring cavities are divided into a first differential wiring cavity (11), a second differential wiring cavity (12) and a third differential wiring cavity (13) from short to long in sequence, the even modules (1) on two sides of the first differential wiring cavity (11), the second differential wiring cavity (12) and the third differential wiring cavity (13) are respectively provided with a first bump (5), and the first differential wiring cavity (11), the second differential wiring cavity (12), the third differential wiring cavity (13), the fourth differential wiring cavity (21) and the fifth differential wiring cavity (23) are connected with at least one first differential wiring cavity (7).

3. The backplane connector of claim 1, wherein: a plurality of slots (144) are formed in the front side wall of the female end base (100), positioning lugs (145) are formed in the rear side wall of the female end base (100), U-shaped grooves (141) for installing the female end base (100) are formed in the male end base (140), plug-in blocks (142) are arranged on the front inner side walls of the U-shaped grooves (141), positioning grooves (143) are formed in the rear side walls of the U-shaped grooves (141), the plug-in blocks (142) are matched and installed in the slots (144), and the positioning lugs (145) are matched and installed in the positioning grooves (143).