CN109546389B

CN109546389B - Backboard connector

Info

Publication number: CN109546389B
Application number: CN201910049578.9A
Authority: CN
Inventors: 赵鹏; 代秀云; 何洪; 张洺诚; 邱雪梅
Original assignee: Sichuan Huafeng Technology Co Ltd
Current assignee: Sichuan Huafeng Technology Co Ltd
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2023-11-03
Anticipated expiration: 2039-01-18
Also published as: CN109546389A

Abstract

The application discloses a backboard connector, which comprises a female end base, an odd-even module and a male end base, wherein the female end base is spliced on the male end base, the odd-even module is arranged on the female end base, the male end base comprises a shell, the bottom of the shell is a substrate, a plurality of pin slots are arranged on the substrate, the pin slots are distributed in a row, the inserting ends of the pin slots are all in a straight shape, the inserting ends of the pin slots without a ground wire at the side are straight slots, the inserting ends of the pin slots with a ground wire at the side are cross slots, the bottom of the substrate is inwards concave to form a mounting slot, an end protection sheet is arranged in the mounting slot, a through hole is arranged on the end protection sheet, and the inserting ends of the pins penetrate through the through hole. The beneficial effects of the application are as follows: plastic mediums are all around the straight slot and can be used for matching impedance to realize impedance matching; the cross grooves enhance the electrical isolation of the pins, and the backboard connector has high structural strength.

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 backboard 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 grown along with the rapid development of the communication, electronic and internet industries.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provides a back board connector.

The aim of the application is achieved by the following technical scheme: the back board connector comprises a female end base, an odd-even module and a male end base, wherein the female end base is inserted on the male end base, the odd-even module is installed on the female end base, the male end base comprises a shell, the bottom of the shell is a substrate, a plurality of pin slots are formed in the substrate, the pin slots are distributed in rows, each pin slot comprises a grounding slot and a differential pair pin slot, each differential pair pin slot in the same row is separated by the grounding slot, a plurality of air pockets are formed in the substrate, the air pockets are blind holes, the air pockets are distributed in rows, the row where the air pockets are located is located between the rows where the adjacent pin slots are located, and a connecting line in the row direction between the adjacent differential pair pin slots in the two adjacent rows is intersected with the air pockets.

Preferably, the insertion ends of the pin slots are all in a straight shape, the insertion ends of the pin slots without the side ground wires are in a straight slot, and the insertion ends of the pin slots with the side ground wires are in a cross slot.

Preferably, the bottom of the substrate is concaved inwards to form a mounting groove, an end protecting piece is mounted in the mounting groove, a through hole is formed in the end protecting piece, and the plug end of the contact pin penetrates through the through hole.

Preferably, each set of differential pair pin slots is directly opposite one air pocket.

Preferably, the grounding slots and the differential pair pin slots on the adjacent columns are all staggered.

Preferably, a plurality of strip-shaped grooves are formed in the bottom of the substrate, and the strip-shaped grooves are located on a central line between columns where adjacent pin slots are located.

Preferably, the bar-shaped groove is provided with a plurality of reinforcing columns, and the bottom surfaces of the reinforcing columns do not protrude out of the bottom surface of the shell.

Preferably, a limit post is arranged in the mounting groove, and a U-shaped notch matched with the limit post is formed in the end part of the end protection piece.

Preferably, the end protection sheet is provided with a positioning hole matched with the reinforcing column, and the bottom surface of the end protection sheet does not protrude out of the bottom surface of the shell.

Preferably, the cross grooves are formed by orthogonal combination of wide grooves and narrow grooves, the width of the wide grooves is larger than that of the narrow grooves, and the width and the length of the narrow grooves are consistent with those of the straight grooves.

Preferably, the straight grooves are distributed at one end of the pin slots in the row, and the ends of the pin slots in the adjacent row are opposite.

Preferably, the female end base is provided with a groove body, the odd-even module is arranged in the groove body, the groove body extends upwards to form a rib partition wall, and the rib partition wall enables the odd-even module not to deflect left and right.

The application has the following advantages:

1. the plastic medium is arranged around the straight slot, and can be used for adjusting impedance to realize impedance matching; the cross grooves are formed, so that the pins are in contact with air locally, and the air has a dielectric constant lower than that of plastic, thereby enhancing the electrical isolation of the pins inserted into the cross grooves and ensuring the integrity of the pins inserted into the cross grooves;

2. 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;

3. 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.

4. 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.

5. The groove body and the rib separating wall are arranged, so that the odd-even module is not deflected left and right, and the positive position of the terminal of the product, which is crimped on the PCB, is ensured to meet the requirements.

Drawings

FIG. 1 is a schematic diagram of a male end base;

FIG. 2 is a schematic diagram of a male end base;

FIG. 3 is a schematic diagram of the distribution of cavitation;

FIG. 4 is a schematic diagram of the distribution of the linear grooves and cross grooves;

FIG. 5 is a schematic view of the structure of the end shield;

FIG. 6 is a schematic view of a cross slot;

FIG. 7 is a schematic view of a pin configuration;

FIG. 8 is a schematic diagram of the structure of the present application;

FIG. 9 is a schematic view of the structure of the female base;

in the figure: 1-shell, 2-substrate, 3-pin slot, 4-air cavity, 5-reinforcement column, 6-bar slot, 7-straight slot, 8-cross slot, 31-ground slot, 32-differential pair pin slot, 33-wide slot, 34-narrow slot, 201-through hole, 202-end guard, 203-positioning hole, 204-limit column, 205-U-shaped notch, 206-mounting slot, 207-plug end, 208-pin, 100-female end base, 200-male end base, 101-slot body, 102-partition wall, 103-odd-even module.

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. 8 and 9, the back board connector comprises a female end base 100, an odd-even module 103 and a male end base 200, wherein the female end base 100 is inserted into the male end base 200, the odd-even module 103 is mounted on the female end base 100, in this embodiment, a groove body 101 is formed on the female end base 100, the odd-even module 103 is mounted in the groove body 101, the groove body 101 extends upwards to form a rib separating wall 102, the rib separating wall 102 enables the odd-even module 103 not to deflect left and right, and the positive position of a terminal of a product pressed on a PCB board is ensured to meet the requirements.

In this embodiment, as shown in fig. 1 and 2, the male end base 200 includes a housing 1, the bottom of the housing 1 is a substrate 2, a plurality of pin slots 3 are formed on the substrate 2, the pin slots 3 are distributed in rows, the insertion ends of the pin slots 3 are all in a straight line shape, the straight line-shaped insertion ends can be used for fixing pins, so that the pins will not shake after being inserted, further, as shown in fig. 3, the pin slots 3 include a grounding slot 31 and a differential pair pin slot 32, grounding pins are inserted into the grounding slot 31, differential pair pins are inserted into the differential pair pin slot 32, the grounding slot 31 in the same row separates each group of differential pair pin slots 32, and further, the grounding slot 31 and the differential pair pin slot 32 in adjacent rows are all staggered, so that the top of one row of pin slots 3 starts with the grounding slot 31, and the top of two rows of pin slots 3 adjacent to the row starts with the differential pair pin slot 32.

In this embodiment, as shown in fig. 3, a plurality of air pockets 4 are formed on the substrate 2, the air pockets 4 are blind holes, the air pockets 4 are also distributed in rows, the rows of the air pockets 4 are located between the rows of the adjacent pin slots 3, and the line between the adjacent differential pair pin slots 32 in the adjacent rows intersects with the air pockets 4, so that the adjacent differential pair pin slots 32 in the adjacent rows have air channels formed by the air pockets 4, the dielectric constant of the transmission medium of the differential pair pin signals is reduced, the signal crosstalk is reduced, further, the outlet ends of the air pockets 4 and the pin slots 3 are regular rectangular holes, and four corners of the rectangular holes are rounded corners, further, the rows of the air pockets 4 are located on the central line between the rows of the adjacent pin slots 3, preferably, each group of differential pair pin slots 32 is opposite to one air pocket 4, each group of differential pair pin slots 32 is composed of two differential pair signal slots 32, namely, the connection line between the centers of the two differential pair pin slots 32 and the centers of the corresponding air pockets 4 is equal, so that one air pocket 4 is shared by one group of differential pair pin slots 32, the grounding slots 31 and the differential pair pin slots 32 on the adjacent columns are staggered, so that the air pockets 4 on the adjacent columns are also staggered, an air channel is formed through the air pocket 4, the transmission medium of the differential pair pin signals is changed, the plastic is changed into air, the dielectric constant of the transmission medium of the differential pair pin signals is reduced because the air has lower dielectric constant than the plastic, the air channel enhances the electrical isolation between the pins of one differential pair in one column and the pins in the adjacent columns, and because each group of differential pair pin slots 32 are separated by the grounding slots 31, therefore, the other side of the differential pair pins is adjacent to the ground wire pins, the ground wire 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 reduced, and the shielding effect of the adjacent differential pair pins is enhanced.

In this embodiment, as shown in fig. 2, the insertion end of the pin slot 3 with the side wire is a slot 7, the insertion end of the pin slot 3 with the side wire is a cross slot 8, the width and length of the slot 7 are the same as those of the insertion end of the pin slot 3, so that the periphery of the pin inserted into the slot 7 is plastic, impedance matching can be adjusted, impedance matching is achieved, the insertion end of the pin slot 3 with the side wire is a cross slot 8, further, as shown in fig. 6, the cross slot 8 is orthogonally combined by a wide slot 33 and a narrow slot 34, the width of the wide slot 33 is larger than the width of the narrow slot 34, and the width and length of the narrow slot 34 are consistent with those of the slot 7, and when the pin 208 is inserted into the cross slot 8, the pin 208 is not in contact with the wide slot 33 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 8.

In this embodiment, after the connecting skin is cut off, the plate inside the notch of the pin is exposed, if the plate is not protected, the service life of the pin is affected, as shown in fig. 1, the bottom of the substrate 2 is concavely formed into a mounting groove 206, an end protecting piece 202 is mounted in the mounting groove 206, as shown in fig. 5, a through hole 201 is formed in the end protecting piece 202, as shown in fig. 1 and 7, 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, which is not electroplated, at the notch of the pin 208 is protected by the end protecting piece, so that the plate at the notch of the pin is not exposed in the air, thereby ensuring the service life of the pin 208.

In this embodiment, a plurality of strip-shaped grooves 6 are formed in the bottom of the substrate 2, the strip-shaped grooves 6 are located on the central line between the columns of adjacent pin slots 3, and the strip-shaped grooves 6 are formed, so that the consumable and the weight of the substrate 2 can be reduced, and the production cost and the weight of the substrate 2 are reduced, and as the air pocket 4 is a blind hole, the structural strength of the substrate 2 can be ensured, compared with the existing through hole, the structural strength of the substrate is higher, the area of the air pocket 4 can be enlarged while the structural strength of the substrate 2 is ensured, so that the area proportion of the air pocket 4 on the substrate is improved, further, a plurality of reinforcing columns 5 are arranged on the strip-shaped grooves 6, the bottom surfaces of the reinforcing columns 5 do not protrude out of the bottom surface of the housing 1, preferably, the bottom surfaces of the reinforcing columns 5 are flush with the bottom surface of the housing 1, the structural strength of the substrate 2 is further increased, so that when the pins are installed, the housing 1 is not deformed, the reliability of the male end base is improved, and the stability of the pin connection is further, the reinforcing columns 5 are distributed, and the number of the reinforcing columns 5 are the same, and the reliability of the housing 2 is ensured within the same in the local range, and the service life of the housing is further ensured.

In this embodiment, a limiting post 204 is disposed in the mounting 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 mounting groove is mounted, 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, the positioning hole 203 matched with the reinforcing column 5 is formed on the end protection sheet 202, and the bottom surface of the end protection sheet 202 does not protrude out of the bottom surface of the housing 1, so that the contact area of the bottom surface of the housing 1 is increased, the mounting of the housing 1 is facilitated, and the positioning hole 203 is matched with the reinforcing column 5, so that the end protection sheet 202 cannot move back and forth and left and right, 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, the linear slots 7 are distributed at one end of the pin slots 3 in the row, and the ends of the pin slots 3 in the adjacent row are opposite, i.e. the top of the insertion end of the pin slot 3 in one row is the linear slot 7, while the bottom is the cross slot 8, the top of the insertion end of the pin slot 3 in the row adjacent to the row is the cross slot 8, and the bottom is the linear slot 7.

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

1. Backboard connector, its characterized in that: the plug-in type connector comprises a female end base (100), an odd-even module (103) and a male end base (200), wherein the female end base (100) is plugged into the male end base (200), the odd-even module (103) is installed on the female end base (100), the male end base (200) comprises a shell (1), the bottom of the shell (1) is a substrate (2), a plurality of plug-in pin slots (3) are formed in the substrate (2), the plug-in pin slots (3) are distributed in a row, the plug-in pin slots (3) comprise a grounding slot (31) and a differential pair plug-in pin slot (32), each group of the differential pair plug-in pin slots (32) are separated by the grounding slot (31) in the same row, a plurality of air pockets (4) are formed in the substrate (2), the air pockets (4) are blind holes, the air pockets (4) are also distributed in rows, the rows of the air pockets (4) are located between the rows of adjacent plug-in pin slots (3), the adjacent plug-in slots (3) are arranged in the row, the adjacent to each other plug-in slot (3) is a line (7) and the plug-in slot is adjacent to the plug-in slot (3), the bottom of the base (2) is concavely formed into a mounting groove (206), an end protection plate (202) is mounted in the mounting groove (206), a through hole (201) is formed in the end protection plate (202), a plug end (207) of a contact pin (208) penetrates through the through hole (201), a plurality of strip-shaped grooves (6) are formed in the bottom of the base (2), the strip-shaped grooves (6) are positioned on a central line between columns of adjacent contact pin slots (3), a plurality of reinforcing columns (5) are arranged on the strip-shaped grooves (6), the bottom surface of each reinforcing column (5) does not protrude out of the bottom surface of the shell (1), a limit column (204) is arranged in the mounting groove (206), a U-shaped notch (205) matched with the limit column (204) is formed in the end part of the end protection plate (202), a locating hole (203) matched with each reinforcing column (5) is formed in the end protection plate (202), the bottom surface of the end protection plate (202) does not protrude out of the bottom surface of the shell (1), a base (101) extends upwards, a base (101) is formed in the base (101), the rib separating wall (102) prevents the odd-even module (103) from deflecting left and right.

2. The backplane connector of claim 1, wherein: the cross groove (8) is formed by orthogonally combining a wide groove (33) and a narrow groove (34), the width of the wide groove (33) is larger than that of the narrow groove (34), and the width and the length of the narrow groove (34) are consistent with those of the straight groove (7).

3. The backplane connector of claim 2, wherein: the straight grooves (7) are distributed at one end of the pin slots (3) in the row, and the ends of the pin slots (3) in the adjacent row are opposite.