CN113285260B

CN113285260B - Electric connector

Info

Publication number: CN113285260B
Application number: CN202110550346.9A
Authority: CN
Inventors: 尹新剑; 马陆飞; 袁俊峰; 周国奇; 李麟麟
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2022-05-13
Anticipated expiration: 2041-05-18
Also published as: CN113285260A

Abstract

An electric connector comprises an insulator, signal pins and grounding pins, wherein the signal pins and the grounding pins are inserted into the insulator, the signal pins and the grounding pins are arranged on the insulator into a plurality of rows of arrays, and the signal pins and the grounding pins of each row of arrays are distributed at intervals. Compared with the prior art, the invention has the advantages that: the width of two adjacent grounding pins in the first direction not only ensures the requirements of high density and miniaturization, but also can realize higher transmission rate, is easy to realize integral common ground and easy to install, and has good product performance.

Description

Electric connector

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to an electric connector.

Background

The connector structure of the existing product is as follows: the connector comprises an insulator, a contact and a solder ball, wherein the contact comprises signal pins and grounding pins, G represents the grounding pins, S represents the signal pins, the contact is arranged in a G-S-S-G-S-S-G mode, and the signal pins and the grounding pins are alternately arranged as shown in figures 1-1 to 1-3. The grounding pin is not easy to install and realize integral common grounding, and the shielding function of the grounding pin is influenced; the width of the adjacent grounding pin can not realize the requirements of high density and miniaturization, and can not realize higher transmission rate, thereby influencing the overall performance of the product.

Disclosure of Invention

The invention provides an electric connector aiming at the technical problem of poor performance of the electric connector.

The purpose of the invention is realized by adopting the following technical scheme. The invention provides an electric connector which comprises an insulator, signal pins and grounding pins, wherein the signal pins and the grounding pins are inserted into the insulator, the signal pins and the grounding pins are arranged on the insulator into a plurality of rows of arrays, and the signal pins and the grounding pins in each row of arrays are distributed at intervals.

Furthermore, the signal pin comprises a contact area I, a linear area I and a pin area I; the grounding pin comprises a contact area II, a linear area II and a pin area II; the front surface of the insulator is provided with a plurality of convex ribs, two sides of each rib are provided with a groove I for accommodating the contact area I and a groove II for accommodating the contact area II, the grooves I correspond to the contact areas I one by one, and the grooves II correspond to the contact areas II one by one; a linear area I arranged at the tail end of the contact area I and a linear area II arranged at the tail end of the contact area II extend towards the back of the insulator, and a pin area I at the tail end of the linear area I and a pin area II at the tail end of the linear area II are inserted into corresponding insertion holes in the insulator; the interference points I and II on the two sides of the pin area I and the pin area II are clamped in corresponding inserting holes on the insulator.

Further, the maximum width of the outer sides of the contact areas I of the differential pairs formed by two adjacent signal pins in the first direction is smaller than the maximum width of the outer sides of the contact areas II of two adjacent grounding pins in the partition wall row in the first direction, and the projection of the outer sides of the contact areas I of the two adjacent signal pins in the second direction falls within the range of the outer sides of the contact areas II of the two adjacent grounding pins in the partition wall row.

Further, the maximum width in the first direction of the outer side of the linear region II of the differential pair composed of two adjacent signal pins is L1, the width in the first direction of the gap between the linear regions II of two adjacent ground pins in the partition row is L2, and the width in the first direction of the outer side of the linear region II of two adjacent ground pins is L3, and the relationship among the three is: l2 is more than or equal to 2T and less than L1, L3 is more than L1, the projection of L1 in the second direction falls into the range of L3, and T is the material thickness of the signal pin and the grounding pin.

Furthermore, the width of one side of the straight line area II of the grounding pin, which is close to the contact area II, is smaller than the width of the side close to the pin area II.

Furthermore, the maximum width of the outer sides of the pin areas I of the differential pairs formed by the two adjacent signal pins in the first direction is smaller than the maximum width of the outer sides of the pin areas II of the two adjacent grounding pins in the partition row in the first direction, and the projection of the outer sides of the pin areas I of the two adjacent signal pins in the second direction falls into the range of the outer sides of the pin areas II of the two adjacent grounding pins in the partition row.

Furthermore, a solder ball is arranged in the pin area I of the signal pin.

Furthermore, the edge of the front face of the insulator is provided with a guide groove and a guide post which are convenient for positioning and inserting with another connector.

Furthermore, a positioning column for mounting the connector is arranged on the back surface of the insulator.

Furthermore, a plurality of bulges are arranged on the back surface of the insulator and positioned between the rows of the arrays.

Compared with the prior art, the invention has the advantages that: the width of two adjacent grounding pins in the first direction not only ensures the requirements of high density and miniaturization, but also can realize higher transmission rate, and is easy to realize integral common ground and easy to install, and has good product performance.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1-1 is a front view of a prior art backplane connector;

FIG. 1-2 is a side view of FIG. 1-1;

FIGS. 1-3 are partial cross-sectional views of FIGS. 1-1;

FIG. 2-1 is a front view of one embodiment of an electrical connector of the present invention;

FIG. 2-2 is a side view of FIG. 2-1;

FIG. 2-3 is a partial cross-sectional view of FIG. 2-1;

fig. 2-4 is a perspective view of the signal pin of fig. 2-1;

fig. 2-5 are perspective views of the grounding pin of fig. 2-1;

FIG. 2-6-1 is a perspective view of the insulator of FIG. 2-1;

fig. 2-6-2 is a perspective view of the insulator of fig. 2-1 from another perspective;

fig. 2-6-3 are perspective views of the insulator of fig. 2-1 from another perspective;

FIGS. 2-6-4 are enlarged partial views of the insulator A of FIGS. 2-6-3;

2-6-5 are cross-sectional views of the insulator of FIG. 2-1;

FIGS. 2-6-6 are partial views of the insulator of FIG. 2-1;

FIG. 2-7 is a partial view of FIG. 2-1;

2-8 are schematic local contact distance diagrams of FIG. 2-1;

fig. 2-9 are schematic views of the contact of fig. 2-1 prior to installation.

[ reference numerals ]

1-insulator of prior art, 2-signal pin of prior art, 3-grounding pin of prior art, 4-solder ball of prior art, 5-insulator, 501-guide groove, 502-guide post, 503-rib, 504-groove I, 505-groove II, 506-positioning post, 507-protrusion, 508-spacing region I, 509-spacing region II, 510-fixing region, 511-avoiding region I, 512-avoiding region II, 513-boss I, 514-boss II, 515-insertion hole, 516-guide structure, 6-signal pin, 601-contact region I, 602-linear region I, 603-pin region I, 604-interference point I, 7-grounding pin, 701-contact region II, 702-linear region II, 703-pin area II, 704-interference point II, 8-solder ball, 9-material belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

One embodiment of an electrical connector of the present invention, as shown in fig. 2-1 to 2-9, includes an insulator 5, a contact, and a solder ball 8, wherein the contact includes a signal pin 6 and a ground pin 7. The insulator 5 is a rectangular plate in overall shape, the length direction of the insulator 5 is a first direction, the width direction thereof is a second direction, the mating surface of the connector is a front surface, the other surface of the connector is a back surface, a contact fitting portion of the contact and another electrical connector is a head portion, and the other end of the contact is a tail portion.

The insulator 5 is fixed with a signal pin 6 and a grounding pin 7, the signal pin 6 and the grounding pin 7 form a multi-row array, each row of the array is parallel to the first direction, the signal pin 6 and the grounding pin 7 of each row of the array are distributed at intervals, at least 5 rows of the array are arranged in the second direction of the insulator 5, and in the embodiment, 7 rows of the array are arranged. S represents the signal pin 6, G represents the ground pin 7, and the distribution rule of the signal pin 6 and the ground pin 7 in each row queue is as follows: G-S-G- … …, to achieve the need for high density, miniaturization and thus higher transmission rates. Solder balls 8 are welded at the tail parts of the signal pins 6 and the grounding pins 7, the solder balls 8 are in contact with the PCB, heated and cooled to realize the conduction connection of the signal pins 6 and the PCB, and meanwhile, the grounding pins 7 and the common grounding piece are in conduction connection.

The insulator 5 is provided with a boss I513 at each of two edges in the first direction, the boss I513 is elongated and has a length equal to that of the insulator 5, and the boss I513 is disposed on the front surface of the insulator 5. A guide groove 501 is formed in the middle of the boss I513 on one side of the insulator 5, the guide groove 501 is a rectangular groove, one side of the guide groove 501 is communicated with the outer surface of the boss I513 facing the inner side, and the other side of the guide groove 501 is communicated with the upper surface of the boss I513; the positions of the boss I513 on the same side, which are close to the two ends, are respectively provided with a guide column 502, the guide columns 502 are cuboid, the lower surfaces of the guide columns are fixed on the insulator 5, and one side surface of the guide columns is fixed on the inner side surface of the boss I513. The position of boss I513 on the other side of insulator 5 near both ends is opened with guide way 501, one side of guide way 501 here is through with the lateral surface of boss I513, the intermediate position of boss I513 here is provided with guide post 502, guide post 502 sets up on the lateral surface of boss I513, its bottom surface is fixed on the outside surface that extends of insulator 5, when this connector is inserted with another electric connector, guide post 502 and guide way 501 with the corresponding guide way of another electric connector, guide post are pegged graft, play the effect of location direction.

The edge of the second direction on the back of the insulator 5 is provided with two positioning columns 506, the two positioning columns 506 are respectively close to two ends of the first direction of the insulator 5, the positioning columns 506 are cylinders perpendicular to the insulator 5, and the positioning columns 506 play a positioning role in mounting the electric connector on a PCB. The tail end of the positioning column 506 is provided with a guiding structure 516, and the guiding structure 516 is positioned at the tail end of the guiding column 506 and is a gradually narrowed circular table for convenient insertion.

Two edges of the insulator 5 along the second direction are respectively provided with a boss II514, and the bosses on the periphery of the insulator 5 enclose the middle position of the front surface of the insulator 5 into a groove. A plurality of ribs 503 extending in the first direction are provided in the groove at the center of the front surface of the insulator 5, and in the present embodiment, there are four ribs 503 in total. The two ends of each rib 503 are connected with bosses II514 at two sides, the rib 503 at one edge is connected with a boss I513 at the edge of the insulator 5, the cross section of the rib 503 is convex, the two sides of the rib 503 along the first direction are both provided with a groove I504 for inserting the signal pin 6 and a groove II505 for inserting the grounding pin 7, the rib 503 at the edge contacting with the boss I513 is only provided with a groove I and a groove II on the inner side, and the width of the groove II505 is larger than that of the groove I504.

The bottom of the groove I504 and the groove II505 and the insulator 5 at the corresponding position are provided with an insertion hole 515 penetrating through the insulator 5, the insertion hole 515 is divided into a fixed area 510, an avoiding area I511 and an avoiding area II512, the avoiding area I511 is positioned at the bottom of the groove I504 and the groove II505, the fixed area 510 and the avoiding area I511 are positioned on the insulator 5 between the rib 503 and the rib 503, the widths of the avoiding area I511 and the avoiding area II512 are equal in the first direction, the width of the fixed area 510 is greater than that of the avoiding area I511 and the avoiding area II512 and is slightly smaller than that of the corresponding groove I504 or groove II505, and the fixed area 510 is positioned between the avoiding area I511 and the avoiding area II 512. The avoidance area I511 and the avoidance area II512 corresponding to the slot II505 are close to the adjacent slot I504. Two side walls of the avoiding area II512 are limiting areas for limiting the position of the tail of the contact element, the limiting area for limiting the signal pin 6 is a limiting area I508, and the limiting area for limiting the grounding pin 7 is a limiting area II 509. Every four adjacent insertion holes 515 in the same row are divided into a group, two adjacent insertion holes 515 in the middle of the group are used for inserting the signal pins 6, and two insertion holes 515 on the outer sides are respectively used for inserting the corresponding two ground pins 7.

On the back of the insulator 5, a protrusion 507 is provided between each row of the insertion holes 515, the protrusion 507 extends to the edge of the insulator 5, when the electrical connector is pressed on a PCB, the protrusion 507 increases the distance between the electrical connector and the PCB, and it is ensured that the solder ball 8 is not flattened.

The signal pin 6 includes a contact area I601, a straight area I602, and a pin area I603. The signal pin 6 is made of a strip-shaped plate, and the main body of the signal pin is a linear area I603. The contact area I601 is located at the head of the signal pin 6, is in the extending direction of the linear area I602, and is convex to one side. The other extending direction of the straight line region I602 is a pin region I603, the pin region I603 is located at the tail of the signal pin 6, the end of the pin region is tilted, and the tilting direction is the same as the protruding direction of the contact region I601. An interference point I604 is arranged at a position, close to the pin area I603, of the linear area I602, the interference point I604 is located on end surfaces of two sides of the linear area I602, and two small short strips which are flush with the linear area I602 are respectively arranged on two sides of the linear area I602 and used for being clamped at the fixing area 510, so that the position of the signal pin 6 is fixed.

The grounding pin 7 comprises a contact area II701, a straight line area II702 and a pin area II 703. The straight line region II702 is provided with an interference point II704 near the pin region II 703. The whole grounding pin 7 has the same structure as the signal pin 6, and the difference is that the width of the side of the linear region II702 of the grounding pin 7 close to the contact region II701 is smaller than the width of the side close to the pin region II 703. The grounding pins 7 on two sides of two adjacent signal pins 6 are a pair of grounding pins 7, the side faces, facing the outside, of the linear areas II702 of the pair of grounding pins 7 are provided with steps, and the steps are used as the transition between the wider part and the narrower part of the linear areas II 702. The interference point II704 at the tail end of the grounding pin 7 is inserted into the corresponding fixing area 510 and is used for fixing the grounding pin 7.

The signal pin 6 and the grounding pin 7 are inserted into the insulator 5 at the corresponding positions. The contact area II601 of the signal pin 6 is positioned in the groove I504, and the contact area II701 of the grounding pin 7 is positioned in the groove II505 and is used for being in contact conduction connection with the signal pin and the grounding pin of another electric connector. The interference point I604 on the signal pin 6 and the interference point II704 on the ground pin 7 are clamped in the corresponding fixing area 510, the protruding directions of the contact area II601 of the signal pin 6 and the contact area II701 of the ground pin 7 face outwards, the pin area II603 of the signal pin 6 and the pin area II703 of the ground pin 7 are located in the corresponding avoiding area I511 and the avoiding area II512, and then the solder balls 8 are soldered at the corresponding positions of the pin area II603 of the signal pin 6 and the pin area II703 of the ground pin 7.

Two adjacent signal pins 6 form a differential pair, the maximum width in the first direction between the outer sides of the contact areas I601 of one differential pair is smaller than the maximum width in the first direction of the outer sides of the contact areas of two adjacent grounding pins 7 of the adjacent group in the same row, and is smaller than the maximum width in the first direction of the outer sides of the contact areas of two adjacent grounding pins 7 of the adjacent group in the partition wall row, and the projection in the second direction of the outer sides of the contact areas II601 of two adjacent signal pins 6 falls within the range of the outer sides of the contact areas II701 of two grounding pins 7 in the partition wall row.

The maximum width in the first direction of the outer side of the straight section II602 of one differential pair is L1, the width in the first direction of the gap between the straight sections of two adjacent grounding pins 7 in the same row or the next-door row is L2, and the width in the first direction of the outer side of the straight sections of two adjacent grounding pins 7 is L3, and the relationship among the three is: l2 is more than or equal to 2T and less than L1, L3 is more than L1, the projection of L1 in the second direction falls in the range of L3, and T is the contact piece material thickness.

The maximum width of the outer sides of the pin areas II603 of one differential pair in the first direction is smaller than the maximum width of the outer sides of the pin areas II703 of two adjacent ground pins 7 in the first direction, and is smaller than the maximum width of the outer sides of the pin areas II703 of two ground pins 7 in the partition row in the first direction, and the projection of the outer sides of the pin areas of two signal pins 6 in the second direction falls within the range of the outer sides of the pin areas 703 of two ground pins 7 in the partition row.

According to the position arrangement of the signal pins 6 and the grounding pins 7, the grounding pins 7 are arranged around each differential pair to shield interference signals.

The width of two grounding pins 7 in the first direction not only ensures the requirements of high density and miniaturization, but also can realize higher transmission rate, and has good product performance.

Before the contact elements are inserted, the signal pins 6 and the grounding pins 7 used in one row are positioned on the same strip 9, and during processing, the signal pins 6 and the grounding pins 7 required in one row are still positioned on the same strip 9. The S-S spacing (A1), the S-G spacing (A2), the G-G spacing (A3) and the pitch (A4) of the finished connector are respectively kept the same as the S-S spacing (B1), the S-G spacing (B2), the G-G spacing (B3) and the pitch (B4) designed on the tape. During assembly, the material belt 9 is adopted for one-time whole-line assembly, and after the assembly is in place, the tail connecting material is shaken and broken off; the technology can finish product assembly by only assembling for a plurality of times, greatly improves the assembly efficiency and can also ensure the true position of the product.

Taking a 292pin connector as an example, if conventional assembly is adopted, one grounding pin is installed at a time, or a pair of signal pins is installed at a time, and the whole assembly can be completed by 146 times, for example, if the design that the distance between the material belt 9 and a product is the same is adopted, and the assembly can be completed by 7 times of assembly when the whole row of assembly is performed, the assembly time can be saved by about 95%.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electric connector, includes insulator (5), signal needle (6), earth pin (7), and signal needle (6), earth pin (7) cartridge are on insulator (5), its characterized in that: the signal pins (6) and the grounding pins (7) are arranged on the insulator (5) to form a multi-row queue, the signal pins (6) are defined as S, the grounding pins (7) are defined as G, and the distribution rule of the signal pins (6) and the grounding pins (7) in each row queue is as follows: G-G-S-S-G-G- … …; the signal pin (6) comprises a contact area I (601), a linear area I (602) and a pin area I (603), and the grounding pin (7) comprises a contact area II (701), a linear area II (702) and a pin area II (703); the length direction of the insulator (5) is defined as a first direction, the width direction is defined as a second direction, the extension direction of the array is parallel to the first direction, the maximum width of the outer side of a contact area I (601) of a differential pair formed by two adjacent signal pins (6) in the first direction is smaller than the maximum width of the outer side of a contact area II (701) of two adjacent grounding pins (7) in a partition wall row in the first direction, and the projection of the outer side of the contact area I (601) of the two adjacent signal pins (6) in the second direction falls within the range of the outer side of the contact area II (701) of the two adjacent grounding pins (7) in the partition wall row.

2. An electrical connector as defined in claim 1, wherein: the front surface of the insulator (5) is provided with a plurality of convex ribs (503), two sides of each rib (503) are provided with a groove I (504) for accommodating the contact area I (601) and a groove II (505) for accommodating the contact area II (701), the grooves I (504) and the contact areas I (601) are in one-to-one correspondence, and the grooves II (505) and the contact areas II (701) are in one-to-one correspondence; a linear area I (602) arranged at the tail end of the contact area I (601) and a linear area II (702) arranged at the tail end of the contact area II (701) extend towards the back of the insulator (5), and a pin area I (603) at the tail end of the linear area I (602) and a pin area II (703) at the tail end of the linear area II (702) are inserted into corresponding insertion holes (515) in the insulator (5); the interference points I (604) on the two sides of the pin area I (603) and the interference points II (704) on the two sides of the pin area II (703) are clamped in the corresponding insertion holes (515) on the insulator (5).

3. An electrical connector as defined in claim 2, wherein: the maximum width of the outer side of the linear area I (602) of the differential pair formed by two adjacent signal pins (6) in the first direction is L1, the width of the gap between the linear areas II (702) of two adjacent grounding pins (7) in the next row in the first direction is L2, the width of the outer side of the linear area II (702) of two adjacent grounding pins (7) in the first direction is L3, and the relationship among the three is that: l2 is more than or equal to 2T and less than L1, L3 is more than L1, the projection of L1 in the second direction falls into the range of L3, and T is the material thickness of the signal pin (6) and the grounding pin (7).

4. An electrical connector as defined in claim 3, wherein: the width of one side of the straight line area II (702) of the grounding pin (7) close to the contact area II (701) is smaller than that of the side close to the pin area II (703).

5. An electrical connector as defined in claim 2, wherein: the maximum width of the outer sides of the pin areas I (603) of the differential pairs formed by two adjacent signal pins (6) in the first direction is smaller than the maximum width of the outer sides of the pin areas II (703) of two adjacent grounding pins (7) in the partition line in the first direction, and the projection of the outer sides of the pin areas I (603) of two adjacent signal pins (6) in the second direction falls within the range of the outer sides of the pin areas II (703) of two adjacent grounding pins (7) in the partition line.

6. An electrical connector as claimed in claim 2 or 5, wherein: and a solder ball (8) is arranged in a pin area I (603) of the signal pin (6).

7. An electrical connector as defined in claim 1, wherein: the edge of the front surface of the insulator (5) is provided with a guide groove (501) and a guide post (502) which are convenient for positioning and inserting with another connector.

8. An electrical connector as defined in claim 1, wherein: and a positioning column (506) for mounting the connector is arranged on the back surface of the insulator (5).

9. An electrical connector as defined in claim 1, wherein: the back of the insulator (5) is provided with a plurality of protrusions (507), and the protrusions (507) are positioned between each row of the arrays.