High density connector

Abstract

The utility model provides a high-density connector which comprises a flat-plate-shaped insulation body, a cross-shaped separation belt is arranged in the middle of the insulation body, the insulation body is further provided with contact areas distributed in four areas of the cross-shaped separation belt, each contact area is provided with densely-distributed containing grooves penetrating through the top face and the bottom face of the insulation body, and a metal terminal is fixedly arranged in each containing groove. The insulation body is in a rectangular flat plate shape, and a material digging structure is arranged on a separation belt in the length direction of a cross separation belt of the insulation body. The high-density connector can effectively prevent poor warpage of the insulating body.

Description

Technical Field

[0001] The utility model belongs to the field of connectors, and in particular relates to a high-density connector. Background Art

[0002] LGA connectors (Land Grid Array connectors) are mostly used for CPU chip module connections. The traditional structure of LGA connectors is that the terminal contact point at the upper end of the metal terminal contacts the contact surface of the CPU chip module, and the welding point at the lower end of the metal terminal is welded to the PCB motherboard pad through a solder ball. However, high-density welding points may have poor welding, which may lead to abnormal circuit breaking.

[0003] In order to solve the problem of poor welding, the LGA type connector has been improved. The welding point at the bottom of the metal terminal is not welded to the PCB main board pad through the solder ball, but is in contact with the contact surface of the PCB like the terminal contact point at the top of the metal terminal, and the contact conduction is replaced by welding conduction. In this way, the metal terminal of the LGA type connector does not need to be welded, which can reduce the abnormal circuit breakage caused by poor welding of high-density welding points. However, the improved LGA type connector is prone to warping. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a high-density connector to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution used in this utility model is:

[0006] A high-density connector includes a flat-plate-shaped insulating body, a cross-dividing strip in the middle of the insulating body, and contact areas distributed in four areas of the cross-dividing strip. Each contact area has densely distributed receiving grooves that penetrate the top and bottom surfaces of the insulating body. Metal terminals are fixed in each receiving groove. The insulating body is in the shape of a rectangular flat plate, and a material-cutting structure is provided on the dividing strip in the length direction of the cross-dividing strip of the insulating body.

[0007] Furthermore, both ends of the insulating body in the length direction are fixed ends, the dividing strip of the cross dividing strip parallel to the two fixed ends is a fixed dividing strip, and the dividing strip of the cross dividing strip perpendicular to the two fixed ends is a non-fixed dividing strip. The excavation structure on the non-fixed dividing strip on both sides of the fixed dividing strip is a hole, and the number of holes on the non-fixed dividing strip on each side of the fixed dividing strip is at least one, and the hole is a through hole that passes through the top and bottom surfaces of the insulating body, or a blind hole that does not pass through the top and bottom surfaces of the insulating body.

[0008] Furthermore, the holes on the non-fixed dividing strip on each side of the fixed dividing strip are composed of a plurality of square holes, and the square holes are arranged in at least one row, and the arrangement direction of the square holes is perpendicular to the fixed dividing strip.

[0009] Furthermore, each of the fixed ends and the fixed dividing strips is respectively provided with at least one screw fixing hole, and the screw fixing holes on the two fixed ends and the fixed dividing strips are arranged on the same straight line.

[0010] Furthermore, each of the fixed ends and the fixed dividing strip is provided with a positioning column, and the positioning column on the fixed dividing strip is offset from the positioning columns on the two fixed ends.

[0011] Furthermore, the positioning posts on the two fixed ends are located on the same side of the non-fixed dividing strip, and the positioning posts on the fixed dividing strip are located on the other side of the non-fixed dividing strip.

[0012] Furthermore, the top surface and the bottom surface of the insulating body are both provided with the positioning posts, and each positioning post on the top surface of the insulating body corresponds to each positioning post on the bottom surface of the insulating body.

[0013] Furthermore, the metal terminal includes a retaining portion and an upper arm which first extends upwardly at an angle from the retaining portion and then bends downward and extends, and a lower arm which first extends downwardly at an angle from the retaining portion and then bends upward and extends, the inclined high end of the upper arm and the inclined low end of the lower arm are both contact ends which are crimped with the chip module and the circuit board, respectively, and the bent end of the upper arm and the bent end of the lower arm are in contact with each other when the contact ends of the upper arm and the lower arm are crimped with the chip module and the circuit board, respectively.

[0014] Furthermore, it also includes an upper cover and a lower cover, wherein the upper cover, chip module, insulating body, circuit board and lower cover are arranged in sequence from top to bottom and the upper cover, chip module, insulating body, circuit board and lower cover are fixedly connected.

[0015] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: by providing a hollowing structure on the dividing strip and on the non-fixed dividing strips on both sides of the fixed dividing strip, the insulating body can be effectively prevented from warping; the positioning column is adopted to facilitate the alignment and installation of the insulating body, thereby improving the installation efficiency; the screw fixing hole is adopted to directly connect the installation through the screw, thereby improving the installation efficiency; the contact end of the metal terminal is contacted and conducted with the chip module and the circuit board by crimping, and the metal terminal does not need to be welded, thereby reducing the circuit breaking abnormality caused by poor welding of high-density welding points. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional exploded schematic diagram of the high-density connector of the utility model;

[0017] Figure 2 Schematic diagram of the combination of the insulating body and the metal terminal Figure 1 ;

[0018] Figure 3 Schematic diagram of the combination of the insulating body and the metal terminal Figure 2 ;

[0019] Figure 4 It is a cross-sectional view of the combination of the insulating body and the metal terminal;

[0020] Figure 5 for Figure 4 A magnified view of position A is shown. DETAILED DESCRIPTION

[0021] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-5 As shown, the high-density connector includes an insulating body 1 in the shape of a rectangular flat plate, with a cross dividing strip 11 in the middle of the insulating body 1, and the insulating body 1 also has contact areas 12 distributed in four areas of the cross dividing strip 11, and each contact area 12 has densely distributed receiving grooves 13 that penetrate the top and bottom surfaces of the insulating body 1, and each receiving groove 13 holds a metal terminal 2.

[0023] Both ends of the insulating body 1 in the length direction are fixed ends 14, the dividing strips of the cross dividing strip 11 parallel to the two fixed ends 14 are fixed dividing strips 111, and the dividing strips of the cross dividing strip 11 perpendicular to the two fixed ends 14 are non-fixed dividing strips 112, which are arranged along the length direction of the insulating body 1. The non-fixed dividing strips 112 on both sides of the fixed dividing strip 111 are provided with a material-cutting structure 113, which is a through hole that passes through the top and bottom surfaces of the insulating body 1. The material-cutting structure 113 on the non-fixed dividing strip 112 on each side of the fixed dividing strip 111 is composed of a plurality of square holes, which are arranged in a row, and the arrangement direction of the square holes is perpendicular to the fixed dividing strip 111.

[0024] Each of the fixed ends 14 and the fixed dividing strip 111 is provided with a screw fixing hole 15 and a positioning column 16. The positioning column 16 on the fixed dividing strip 111 is offset from the positioning columns 16 on the two fixed ends 14. The screw fixing holes 15 on the fixed dividing strip 111 and the screw fixing holes 15 on the two fixed ends 14 are arranged on the same straight line, and the holes next to each screw fixing hole 15 are material digging holes. The positioning columns 16 on the two fixed ends 14 are located on the same side of the non-fixed dividing strip 112, and the positioning columns 16 on the fixed dividing strip 111 are located on the other side of the non-fixed dividing strip 112. The positioning columns 16 are provided on the top and bottom surfaces of the insulating body 1. Each positioning column 11 on the top surface of the insulating body 1 corresponds to each positioning column 16 on the bottom surface of the insulating body 1, and these positioning columns 16 are integrally formed with the insulating body 1.

[0025] The metal terminal 2 includes a retaining portion 21 and an upper arm 22 which first extends upwardly at an angle and then bends downward from the retaining portion 21, and a lower arm 23 which first extends downwardly at an angle and then bends upward from the retaining portion 21. The inclined high end of the upper arm 22 and the inclined low end of the lower arm 23 are both contact ends 2a which are crimped to the chip module 100 and the circuit board 200 respectively. The bent end of the upper arm 22 and the bent end of the lower arm 23 contact each other when the contact ends 2a of the upper arm 22 and the lower arm 23 are crimped to the chip module 100 and the circuit board 200 respectively.

[0026] The high-density connector further comprises an upper cover 3 and a lower cover 4. The lower cover 4 is in the shape of a flat plate. The lower surface of the upper cover 3 is concave upward and the upper surface is convex upward to form a concave cavity. The chip module 100 is accommodated in the concave cavity. The circuit board 200 is located between the insulating body 1 and the lower cover 4. The upper cover 3 is expanded outward at the periphery of the convexity to form a fixed edge 31. The chip module 100 has an extended edge a corresponding to the fixed edge 31. The screw fixing hole 15 of the fixed end 14 passes through the fixed edge 31, the extended edge a, the circuit board 200 and the lower cover 4, and they are connected by screws 5 at the screw fixing hole 15. The screw fixing hole 15 of the fixed dividing strip 111 passes through the upper cover 3, the chip module 100, the circuit board 200 and the lower cover 4, and they are also connected by screws 5 at the screw fixing hole 15. Through the action of the upper cover 3 and the lower cover 4, the chip module 100 and the circuit board 200 are pressed and contacted with the contact ends 2a of the upper arm 22 and the lower arm 23.

[0027] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: by providing a hollowing structure 113 on the dividing strip and on the non-fixed dividing strip 112 on both sides of the fixed dividing strip 111, the insulating body 1 can be effectively prevented from warping; the positioning column 11 is adopted to facilitate the alignment installation of the insulating body 1 and improve the installation efficiency; the screw fixing hole 15 is adopted to directly install and connect through the screw 5, thereby improving the installation efficiency; the contact end 2a of the metal terminal 2 is contacted and connected with the chip module 100 and the circuit board 200 in a crimping contact manner, and the metal terminal 2 does not need to be welded, which can reduce the circuit breaking abnormality caused by poor welding of high-density welding points.

[0028] In other embodiments, the hollowing structure 113 on the non-fixed dividing strips 112 on both sides of the fixed dividing strip 111 is a long through hole that passes through the top and bottom surfaces of the insulating body 1. The number of long through holes on the non-fixed dividing strip 112 on each side of the fixed dividing strip 111 is one, and the two ends of each long through hole are respectively connected to the fixed dividing strip 111 and the fixed end 14.

[0029] In other embodiments, the excavation structure 113 on the non-fixed dividing strips 112 on both sides of the fixed dividing strip 111 is a long through hole that passes through the top and bottom surfaces of the insulating body 1. The number of long through holes on the non-fixed dividing strip 112 on each side of the fixed dividing strip 111 is two, and the two long through holes on the non-fixed dividing strip 112 on each side are parallel, and the two ends of each long through hole are respectively connected to the fixed dividing strip 111 and the fixed end 14.

[0030] In other embodiments, the material-cutting structure 113 on the non-fixed dividing strip 112 on each side of the fixed dividing strip 111 is composed of a plurality of square holes, which are arranged in two rows, and the arrangement direction of the square holes is perpendicular to the fixed dividing strip 111 .

[0031] In other embodiments, the hollowing structure 113 is a blind hole that does not penetrate the top and bottom surfaces of the insulating body 1 .

[0032] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A high-density connector, comprising a flat insulating body, a cross-shaped dividing strip in the middle of the insulating body, and contact areas distributed in four areas of the cross-shaped dividing strip. Each contact area has a densely distributed receiving groove that penetrates both the top and bottom surfaces of the insulating body, and each receiving groove has a metal terminal fixed therein, characterized in that: The insulating body is in the shape of a rectangular flat plate, and a cutout structure is provided on the dividing strips in the length direction of the cross dividing strips of the insulating body.

2. The high-density connector according to claim 1, characterized in that: Both ends of the insulating body in the length direction are fixed ends, the dividing strip of the cross dividing strip parallel to the two fixed ends is a fixed dividing strip, and the dividing strip of the cross dividing strip perpendicular to the two fixed ends is a non-fixed dividing strip. The excavation structure on the non-fixed dividing strip on both sides of the fixed dividing strip is a hole, and the number of holes on the non-fixed dividing strip on each side of the fixed dividing strip is at least one, and the hole is a through hole that passes through the top and bottom surfaces of the insulating body, or a blind hole that does not pass through the top and bottom surfaces of the insulating body.

3. The high-density connector according to claim 2, characterized in that: The holes on the non-fixed dividing strip on each side of the fixed dividing strip are composed of a plurality of square holes, which are arranged in at least one row, and the arrangement direction of the square holes is perpendicular to the fixed dividing strip.

4. The high-density connector according to claim 2 or 3, characterized in that: Each of the fixed ends and the fixed dividing strips is respectively provided with at least one screw fixing hole, and the screw fixing holes on the two fixed ends and the fixed dividing strips are arranged on the same straight line.

5. The high-density connector according to claim 2 or 3, characterized in that: A positioning column is respectively arranged on each of the fixed ends and the fixed dividing strip, and the positioning column on the fixed dividing strip is offset from the positioning columns on the two fixed ends.

6. The high-density connector according to claim 5, characterized in that: The positioning posts on the two fixed ends are located on the same side of the non-fixed dividing strip, and the positioning posts on the fixed dividing strip are located on the other side of the non-fixed dividing strip.

7. The high-density connector according to claim 5, characterized in that: The top surface and the bottom surface of the insulating body are both provided with the positioning posts, and each positioning post on the top surface of the insulating body corresponds to each positioning post on the bottom surface of the insulating body.

8. The high-density connector according to any one of claims 1 to 3, characterized in that: The metal terminal includes a retaining portion and an upper arm which first extends upwardly at an angle from the retaining portion and then bends downward and extends, and a lower arm which first extends downwardly at an angle from the retaining portion and then bends upward and extends, the inclined high end of the upper arm and the inclined low end of the lower arm are both contact ends which are crimped with the chip module and the circuit board respectively, and the bent end of the upper arm and the bent end of the lower arm are in contact with each other when the contact ends of the upper arm and the lower arm are respectively crimped with the chip module and the circuit board.

9. The high-density connector according to claim 8, characterized in that: It also includes an upper cover and a lower cover, wherein the upper cover, chip module, insulating body, circuit board and lower cover are arranged in sequence from top to bottom and the upper cover, chip module, insulating body, circuit board and lower cover are fixedly connected.

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