Straight socket connector structure

Abstract

The invention relates to the technical field of connectors, in particular to a straight socket connector structure which comprises a metal shell. The base assembly is arranged in the metal shell, the base assembly comprises a plastic base, a plurality of jack contact pieces and a plurality of shielding pieces, the plastic base and the plurality of shielding pieces are installed and matched to form a core body frame which is arranged in the metal shell, and the plurality of jack contact pieces are accommodated in the core body frame; in an installation state, the plurality of shielding sheets are closely arranged along the length direction of the plastic base and form independent spaces which are distributed at equal intervals and shield each other, and every two jack contact elements are assembled into a group and are arranged in one independent space to form an independent unit. Two contact pieces are combined into a differential pair for signal transmission, each differential pair is fixed to the corresponding position of the base to form an independent body, the independent units are shielded through the metal sheets, full-link isolation between the independent units is achieved, the shielding effect is good, and the size is small.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, in particular to a straight socket connector structure. Background Art

[0002] With the vigorous development of my country's commercial aerospace and low-altitude economic fields, more and more commercial satellites, launch vehicles, drones, ground monitoring stations, etc. have been put into use. Therefore, the demand for large-capacity storage, high-precision cameras, high-precision image processors, big data calculators and other equipment is becoming more and more vigorous, driving the technological development of various components to advance rapidly towards miniaturization, high transmission rate, low cost, and high reliability. As a result, the demand for miniaturization, high reliability, and low cost of key components (connectors) for data interconnection between internal boards and external modules of equipment is becoming more and more urgent.

[0003] At present, many high-speed connectors have been widely used in the military field due to their high reliability performance, meeting the use requirements of components in various complex external environments. However, military high-speed products are usually designed with machined parts, which do not have advantages in product cost and process assembly efficiency. In addition, the structure of the connector is relatively complex, the process is difficult, and it is not suitable for mass production.

[0004] In the civilian field, miniaturized high-speed connectors are usually made of plastic parts and metal shrapnel, and are formed by mold processing. The products are more suitable for mass production, and have great advantages in manufacturing costs and connector weight and volume. However, the overall reliability of such products is relatively low, and the connectors often have low mechanical environmental indicators such as resistance to strong vibration and impact.

[0005] Therefore, in order to meet the special needs of miniaturization, high reliability and low cost of docking plug-ins in the commercial aerospace and low-altitude economic fields, it is urgent to develop a type of high-speed connector with metal shell reinforcement, compact structure, reliable contact and low cost. Summary of the invention

[0006] The present invention aims at solving the problems in the prior art and provides a straight socket connector structure. The specific technical solution is as follows:

[0007] Straight socket connector structure, including:

[0008] Metal housing;

[0009] and a base assembly installed in the metal shell, the base assembly comprising a plastic base, a plurality of socket contacts and a plurality of shielding sheets, the plastic base and the plurality of shielding sheets are installed and matched to form a core frame installed in the metal shell, and the plurality of socket contacts are accommodated in the core frame;

[0010] In the installed state, multiple shielding sheets are closely arranged along the length of the plastic base to form independent spaces that are evenly distributed and shielded from each other. Every two socket contacts are assembled as a group and arranged in an independent space to form an independent unit.

[0011] As a further technical solution of the present invention, the plastic base is a rectangular structure as a whole, and a plurality of mounting holes corresponding to the socket contacts are opened on one end surface, wherein two mounting holes form a group, and the plurality of groups of mounting holes are arranged in parallel, and a plurality of step holes are arranged on the other end surface of the plastic base, and step grooves are distributed on both sides thereof, and the step holes are connected to the mounting holes;

[0012] The socket contact is a straight cylindrical structure, and includes a docking area at the front end, a barb structure and a positioning step in the middle, and a connecting portion at the rear end;

[0013] In the installed state, the butt joint area of ​​the socket contact protrudes from the mounting hole on the base, and the barbs and positioning steps of the socket contact are located in the mounting hole and the step hole on the base.

[0014] As a further technical solution of the present invention, a plurality of narrow square grooves are further provided on the end surface where the mounting holes are located in the plastic base, and the plurality of narrow square grooves are interspersed between the plurality of mounting holes, and a plurality of narrow through grooves, steps and square grooves are provided in the middle position on the other end surface of the plastic base, and the narrow through grooves and the narrow square grooves are connected to each other for accommodating the shielding sheet;

[0015] The shielding sheet includes a main body and an extension part, wherein the main body includes a narrow plate and a wide back plate for shielding, a support step for supporting a base, a bending wall for conducting and limiting, and a material connection position for connecting a material strip; the extension part includes two bending walls arranged opposite to each other, wherein the bending wall is a thin-walled structure extending vertically from the edge of the main body to the far end, including a cantilever beam small spring piece extending to the front end and a joint extending to the rear end, wherein a supporting convex bump and a small step for supporting are punched at the middle far end;

[0016] After the plastic base and the shielding sheet are installed, the main part of the shielding sheet is installed in the groove on the plastic base, wherein the narrow plate is located in the narrow square groove, the wide back plate is located in the narrow through groove, and the bent wall of the extended part of the shielding sheet is installed on both sides of the plastic base, wherein the small spring sheet is located in the square groove, and the small step is located in the step.

[0017] As a further technical solution of the present invention, the socket contact and its connecting portion are an integrated structure, the connecting portion is a welding end, and in the installed state, the socket contact is welded to the printed circuit board through its connecting portion, and the cross-sectional shape of the connecting portion is circular or rectangular;

[0018] The joint is a square cantilever beam welding terminal.

[0019] As a further technical solution of the present invention, the socket contact and its connecting part are detachable structures, the connecting part is a crimping terminal, including a cylindrical needle structure in the head area, a supporting shoulder structure in the middle area and a fisheye structure at the tail end, and the connecting end of the socket contact and the connecting part is provided with a four-petal groove. In the installed state, the cylindrical needle is inserted into the four-petal groove, and the supporting shoulder is inserted into the petal groove, and the fisheye is press-fitted with the printed circuit board; after the socket contact and the plastic base are installed, the supporting shoulder on the socket contact is located in the step groove, playing an axial supporting role;

[0020] The connector is a crimping terminal with a fisheye structure.

[0021] As a further technical solution of the present invention, the metal shell is a rectangular structure, one end of the metal shell has a docking cavity, one side of the docking cavity has two positioning grooves, a positioning boss is designed in the docking cavity, the other end of the metal shell has a mounting cavity connected to the docking cavity, the mounting cavity has limiting grooves on both sides, and the connection end between the plastic base and the metal shell has a positioning step;

[0022] When installed, the positioning step fits with the positioning boss, the shielding plate axially supports the plastic base and the supporting bulge on it is stuck in the limiting groove, the docking area of ​​the socket contact is located in the docking cavity, the crimping terminals of the shielding plate are located at both ends of the socket contact, and the small spring sheets on the shielding plate fit with the inner wall of the metal shell to form a connection.

[0023] As a further technical solution of the present invention, it also includes a nut attachment, which is a cylindrical structure, one end of which has an extended step and a milling plane, and the other end of which is provided with a riveted thin-walled structure;

[0024] The metal shell is also provided with two square grooves symmetrically distributed on both sides of the docking cavity, and the square grooves have circular mounting through holes extending downward to the bottom;

[0025] In the installed state, the nut attachment is inserted into the circular installation through hole, wherein the step is pressed into the square groove, and the milled surface fits on the wall of the square groove to prevent rotation.

[0026] As a further technical solution of the present invention, the other end of the metal shell has a support step extending outward, and a transition chamfer is arranged inside the support step at a position corresponding to the mouth of the through hole.

[0027] The beneficial effects of the present invention are as follows:

[0028] In the present application, the contact piece adopts a tiny jack contact piece, and two contact pieces are combined into a differential pair for signal transmission. Each differential is fixed at the corresponding position of the base to form an independent body. The independent units are shielded by metal sheets from each other, thereby achieving full-link isolation between each other. It has the characteristics of good shielding effect, small size, and high transmission performance.

[0029] In the present application, the base is firmly fixed in the metal shell through multiple stamped shielding sheet structures. At the same time, the connector is designed as a virtual modular structure. The shielding sheet and the shell cooperate to form a full shielding distribution around the differential contact pairs. The connector has the characteristics of miniaturization, compact structure, low cost and high transmission rate. It is particularly suitable for high-speed signal transmission in narrow spaces inside a chassis or inside a module. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The overall structure diagram of the straight soldering socket connector is shown;

[0031] Figure 2 The overall structure diagram of the straight crimping type socket connector is shown;

[0032] Figure 3 A schematic structural diagram of a base assembly in a straight soldering type socket connector is shown;

[0033] Figure 4 A schematic diagram showing the structure of a base assembly in a straight crimp-type socket connector is shown;

[0034] Figure 5 A schematic diagram of the structure of a plastic base is shown;

[0035] Figure 6 A schematic diagram showing the structure of a socket contact in a straight soldering type socket connector is shown;

[0036] Figure 7 A schematic diagram showing the structure of a socket contact in a straight crimp-type socket connector is shown;

[0037] Figure 8 A schematic diagram showing the structure of a shielding sheet in a straight soldering type socket connector is shown;

[0038] Fig. 9 A schematic diagram showing the structure of a shielding sheet in a straight crimp-type socket connector is shown;

[0039] Fig.10 A schematic diagram of the structure of the assembled plastic base and shielding sheet in a straight soldering socket connector is shown;

[0040] Fig.11A schematic diagram of the structure of the assembled plastic base and shielding sheet in the straight crimping socket connector is shown;

[0041] Fig.12 A schematic structural diagram of a base assembly in a straight soldering type socket connector is shown;

[0042] Fig.13 A schematic diagram of the structure of a metal shell is shown;

[0043] Fig.14 A schematic diagram of the cross-sectional structure of a straight crimp-type socket connector is shown;

[0044] Fig.15 A schematic diagram showing the structure of a straight soldering socket connector in application;

[0045] Fig.16 A schematic diagram showing the structure of a straight crimp-type socket connector in application;

[0046] Fig.17 A schematic diagram of the structure of the nut attachment is shown. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0048] In the present application, two straight socket connector structures are provided, which are divided into a straight soldering type socket connector and a straight crimping type socket connector according to the structural difference of the base assembly 16 .

[0049] Figure 1-Figure 4The present application provides a straight socket connector structure, including a metal shell 10, a base assembly 16 installed in the metal shell 10 and two nut attachments 14 installed on the metal shell 10; wherein the base assembly 16 includes a plastic base 11, a plurality of socket contacts 12 and a plurality of shielding sheets 13, the plastic base 11 and the plurality of shielding sheets 13 are installed and matched to form a core frame installed in the metal shell 10, and the plurality of socket contacts 12 are located between the plastic base 11 and the plurality of shielding sheets 13 and are confined in the core frame; the plurality of shielding sheets are closely arranged along the length of the plastic base 11 to form independent spaces that are equidistantly distributed and shielded from each other, and each two socket contacts are arranged as a group in an independent space to form an independent Unit, thereby forming a virtual modular structure; the base is firmly fixed in the metal shell through multiple stamped shielding sheet structures, and the connector is designed as a virtual modular structure. The shielding sheet and the shell cooperate to form a full shielding distribution around the jack contact. The connector has the characteristics of miniaturization, compact structure, low cost, and high transmission rate, and is particularly suitable for high-speed signal transmission in a narrow space inside a chassis or inside a module; and, since the plastic base 11, the multiple jack contacts 12, and the multiple shielding sheets 13 can be pre-installed into a base assembly 16, the base assembly 16 can be assembled separately as an independent unit, and finally the assembly is formed and then installed as a whole into the metal shell 10, making the assembly steps more flexible and changeable.

[0050] Figure 1 and Figure 2 , twelve differential unit connectors are shown. High-speed connectors of different specifications differ in the number of cores and size, but are basically the same in structure and high-speed transmission performance.

[0051] Figure 5-Figure 9 In the figure, the plastic base 11 is injection molded by a precision mold and is a rectangular structure as a whole; the jack contact 12 is a straight cylindrical structure and is formed by turning; the welding shielding sheet 13 is punched and formed by a precision metal stamping die, and the shielding sheet 13 is a thin sheet structure as a whole.

[0052] A plurality of mounting holes 1101 corresponding to the socket contact 12 are provided on one end surface 110 of the plastic base 11, wherein two mounting holes 1101 form a group, and the plurality of groups of mounting holes 1101 are arranged in parallel. A plurality of step holes 1120 for assembling and limiting the contact are provided on the other end surface of the plastic base 11, and step grooves 1121 are distributed on both sides thereof. The step holes 1120 are connected to the mounting holes 1101, and can be used for limiting and assembling the socket contact 22; the socket contact 12 includes a docking area 120 at the front end, a barb 121 structure in the middle, and a plurality of mounting holes 1101 in the middle. and a positioning step 122 and a connecting portion 123 at the tail. In the installed state, every two jack contacts 12 are located in a group of mounting holes 1101 in the base 11 as a differential signal pair, wherein the docking area 120 of the jack contact 12 protrudes from the mounting hole 1101 on the base 11, and can be used for subsequent docking with the docking end connector, and the barb 121 and the positioning step 122 of the jack contact 12 are located in the mounting hole 1101 and the step hole 1120 on the base 11, which can ensure that the axial position of the jack contact in the base 11 is fixed.

[0053] A plurality of narrow square grooves 1102 are also provided on the end surface where the mounting holes 1101 in the plastic base 11 are located, and the plurality of narrow square grooves 1102 are interspersed between the plurality of mounting holes 1101, forming a virtual modular structure, a plurality of narrow through grooves 1110, steps 1111 and square grooves 1112 are provided in the middle position on the other end surface of the plastic base 11, and the narrow through grooves 1110 and the narrow square grooves 1102 are connected to each other, for accommodating the shielding sheet 13, thereby fixing the position of the shielding sheet, and at the same time distributed around every two contact members; the shielding sheet 13 includes a main body part and an extension part, the main body part includes a narrow plate 130 and a wide back plate 132 for shielding function, a support step 131 for supporting the base, a bending wall 133 for conduction and limiting, and a connecting position 134 for connecting the material strip; the extension part includes two The bent wall 133 is a thin-walled structure extending vertically from the edge of the main body to the distal end, including a cantilever beam small spring piece 1331 extending to the front end and a joint 1334 extending to the rear end, wherein a supporting convex bump 1333 and a small step 1332 for supporting are punched out at the middle distal end; after the plastic base 11 and the shielding sheet 13 are installed, the main part of the shielding sheet 13 is installed in the groove on the plastic base 11, wherein the narrow plate 130 is located in the narrow square groove 1102, and the wide back plate 132 is located in the narrow through groove 1110; the bent wall 133 of the extended part of the shielding sheet 13 is installed on both sides of the plastic base 11, wherein the small spring piece 1331 is located in the square groove 1112, which plays a avoiding function, and the small step 1332 is located in the step 1111, which plays a supporting function for the base 11 upward.

[0054] Figure 5-Figure 12In the figure, the assembly process of the shielding sheet 13 and the plastic base 11 is as follows: the shielding sheet 13 is assembled into the corresponding grooves one by one from the tail end of the plastic base 11, and then the connecting position 134 on the shielding sheet 13 is broken to complete the quick assembly of the shielding sheet. After the shielding sheet is assembled, the main body is installed in the groove on the plastic base 11, that is, the narrow plate 130 on the shielding sheet is located in the narrow square groove 1102, and the wide back plate 132 is located in the narrow through groove 1110. The extended bending walls 133 of the welding shielding sheet 13 and the crimping shielding sheet 23 are installed on both sides of the plastic base 11, that is, the small spring sheet 1331 on the shielding sheet is located in the square groove 1112, which plays a avoidance function, and the small step 1332 on the shielding sheet is located in the step 1111, which plays a supporting function for the base 11 upward. After the shielding sheet is assembled to the plastic base 11, a combination is formed. The shielding sheet is located in the corresponding slot on the plastic base 11. The shielding sheet 13 is distributed on both sides of each pair of differential contacts, and then cooperates with the metal shell 10 to form a full shielding structure around the jack contact 12 to achieve a better shielding effect. After the shielding sheet is assembled to the base 11, the connector 1334 on the shielding sheet forms two rows of neat grounding pins, which are located at both ends of every two signal pins. Every two grounding pins and two signal pins are grouped as a differential transmission unit.

[0055] After the welding-type jack contact 12, the shielding sheet 13 and the base 11 are assembled, every two jack contacts 12 are located in the mounting hole 1101 in the base 11 and are used as a differential signal pair; the wide back plate 132 on the shielding sheet 13 is located in the narrow through groove 1110 on the base 11, and the bending wall 132 is located on both sides of the base 11. The shielding sheet 13 evenly distributes the base 11 to form a plurality of virtual units. Because the plurality of shielding sheets 13 are complementary in shielding, the differential signal pairs are isolated from each other, and thus have better anti-interference capability.

[0056] In the above description, the connection portion 123 of the jack contact 12 and the connector 1334 of the shielding sheet 13 are both connected to the printed circuit board, and the connection here can be welding or detachable connection, as described below.

[0057] In one embodiment, that is, a straight welding type socket connector; the jack contact 12 and its connecting portion 123 are an integrated structure, and the connecting portion 123 is a welding end. In the installed state, the jack contact 12 is welded to the printed circuit board through its connecting portion 123, and the cross-sectional shape of the connecting portion 123 is circular or rectangular; the joint 1334 is a square cantilever beam welding terminal, which can be welded to the PCB board. In this way, the jack contact 12 can be welded to the printed circuit board by using the connecting portion 123 as a welding end.

[0058] In another embodiment, that is, a straight crimp-type socket connector; the jack contact 12 and its connecting portion 123 are detachable structures, the connecting portion 123 is a crimping terminal, which is formed by stamping with a metal mold, and its structure includes three parts, including a cylindrical needle 1232 structure in the head area, a supporting shoulder 1231 structure in the middle area, and a fisheye 1234 structure at the tail end, and the connecting end of the jack contact 12 and the connecting portion 123 is provided with a four-petal groove 1233. In the installed state, the cylindrical needle 1232 is inserted into the four-petal groove 1233, and the supporting shoulder 1231 is inserted in the petal groove, and the fisheye 1234 is press-fitted with the printed circuit board; after the jack contact 12 and the plastic base 11 are installed, the supporting shoulder 1231 on the jack contact 12 is located in the step groove 1120, playing an axial support role; the connector 1334 is a crimping terminal of the fisheye structure.

[0059] Fig.10 , Fig.13 , Fig.14 In the embodiment, the metal shell 10 is a rectangular structure, which is formed by milling or die casting. One end of the metal shell 10 has a docking cavity 100, and one side of the docking cavity 100 has two positioning grooves 1001. The two positioning grooves 1001 are set to have a special shape so as to have anti-reverse insertion and anti-skew insertion and removal functions during docking. A positioning boss 1002 is designed in the docking cavity 1001. The other end of the metal shell 10 has an installation cavity 103 connected to the docking cavity 100. The two sides of the installation cavity 103 are provided with limiting grooves 1031. The plastic A positioning step 1103 is provided on the connecting end of the base 11 and the metal shell 10; in the installed state, the positioning step 1103 fits with the positioning boss 1002, the shielding sheet 13 axially supports the plastic base 11 and the supporting convex bump 1333 thereon is stuck in the limiting groove 1031, the docking area of ​​the socket contact 12 is located in the docking cavity, the crimping terminals 1334 of the shielding sheet 13 are located at both ends of the socket contact 12, and the small spring pieces 1331 on the shielding sheet 13 fit with the inner wall of the metal shell 11 to form a connection, thereby providing a complete "ground" loop for the differential signal pair.

[0060] The base assembly 16 is assembled from the rear end face of the metal shell 10 to the installation cavity 103. After assembly, the positioning step 1103 on the plastic base 11 fits with the positioning boss 1002 on the metal shell 10, limiting the forward movement of the base assembly. At the same time, the shielding sheet 13 axially supports the base 11 and the supporting convex bump 1333 structure thereon is stuck in the limiting groove 1031 in the inner cavity of the metal shell 10, so that the crimping base assembly 16 cannot move backward or be dragged out; after assembly, the docking area of ​​the jack contact 12 is located in the docking cavity of the metal shell 10, and the crimping terminals 1334 of the shielding sheet 13 are located at both ends of the jack assembly 22; after assembly, the small spring piece 1331 on the shielding sheet 23 fits with the inner wall of the metal shell 11 to form a connection, providing a complete "ground" loop for the differential signal pair.

[0061] Fig.17 Combination Fig.10 The metal shell 10 is also provided with two square grooves 101 symmetrically distributed on both sides of the docking cavity 100. The square groove 101 has a circular mounting through hole 1010 extending downward to the bottom. The nut attachment 14 is a cylindrical structure 141, which is formed by machining or die casting, and has an internal thread 140 structure for locking inside. One end of the nut attachment 14 has an extended step 142 and a milling plane 1420, and the other end is provided with a riveted thin-walled structure 143. In the installed state, the nut attachment 14 is inserted into the circular mounting through hole 1010, wherein the step 142 is pressed into the square groove 101, and the milling plane 1420 fits on the wall of the square groove 101 to stop rotation; the two square grooves 101 can be on the metal shell 10 A step surface is formed on the metal shell 11, which is used to limit the step 142 of the nut attachment 14. The nut attachment 14 has an anti-rotation function inside it so that the bolt can rotate relatively when inserted; the other end of the metal shell 10 has a support step 102 extending outward, which can increase the support area of ​​the connector and the PCB board and improve stability; a transition chamfer 1021 is provided at the mouth of the through hole 1010 corresponding to the support step 102; the nut attachment 14 is installed into the mounting through hole 1010 from the front end face of the metal shell 11, and its front end face is fitted with the square groove 101 through the milling plane 1420 to achieve the anti-rotation function, and its rear end face is riveted along the transition chamfer 1021 through the thin-walled structure 143 to achieve the axial fixing function.

[0062] In this embodiment, the internal thread 140 inside the nut attachment 14 is a through thread, the front half of which is mainly used to lock with the screw attachment of the mating connector, and the rear half is mainly used to lock with the screws of the locking PCB board.

[0063] Fig.16 and Fig.17In the process, the connector is first pressed onto the printed circuit board 16 by tooling or welding to achieve signal conduction between the contact and the printed circuit board 16, and then the accessory 15 is installed by multiple screws to lock it with the printed circuit board 16 to achieve reliable fixation between them.

[0064] After the socket connector is fixed to the printed circuit board 16, it is docked with the docking end plug 3 and locked with the nut attachment 14 by means of the screw locking attachment 31 to achieve fixation and connection between the head and the socket.

[0065] The straight socket connector structure involved in the present invention firmly fixes the base in the metal shell through multiple punched shielding sheet structures. At the same time, the connector is designed as a virtual modular structure. The shielding sheet and the shell cooperate to form a full shielding distribution around the differential contact pair. The connector has the characteristics of miniaturization, compact structure, low cost and high transmission rate, and is particularly suitable for high-speed signal transmission in narrow spaces inside a chassis or inside a module.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A straight socket connector structure, characterized in that: include: Metal housing; and a base assembly installed in the metal shell, the base assembly comprising a plastic base, a plurality of socket contacts and a plurality of shielding sheets, the plastic base and the plurality of shielding sheets are installed and matched to form a core frame installed in the metal shell, and the plurality of socket contacts are accommodated in the core frame; In the installed state, multiple shielding sheets are closely arranged along the length of the plastic base to form independent spaces that are evenly distributed and shielded from each other. Every two socket contacts are assembled as a group and arranged in an independent space to form an independent unit.

2. The straight socket connector structure according to claim 1, characterized in that: The plastic base is a rectangular structure as a whole, and a plurality of mounting holes corresponding to the socket contacts are provided on one end surface, wherein two mounting holes form a group, and the plurality of groups of mounting holes are arranged in parallel, and a plurality of step holes are provided on the other end surface of the plastic base, and step grooves are distributed on both sides thereof, and the step holes are connected to the mounting holes; The socket contact is a straight cylindrical structure, and includes a docking area at the front end, a barb structure and a positioning step in the middle, and a connecting portion at the rear end; In the installed state, the butt joint area of ​​the socket contact protrudes from the mounting hole on the base, and the barbs and positioning steps of the socket contact are located in the mounting hole and the step hole on the base.

3. The straight socket connector structure according to claim 2, characterized in that: A plurality of narrow square grooves are also arranged on the end surface where the mounting holes are located in the plastic base, and the plurality of narrow square grooves are interspersed between the plurality of mounting holes, and a plurality of narrow through grooves, steps and square grooves are arranged in the middle position on the other end surface of the plastic base, and the narrow through grooves and the narrow square grooves are connected to each other for accommodating the shielding sheet; The shielding sheet includes a main body and an extension part, wherein the main body includes a narrow plate and a wide back plate for shielding, a support step for supporting a base, a bending wall for conducting and limiting, and a material connection position for connecting a material strip; the extension part includes two bending walls arranged opposite to each other, wherein the bending wall is a thin-walled structure extending vertically from the edge of the main body to the far end, including a cantilever beam small spring piece extending to the front end and a joint extending to the rear end, wherein a supporting convex bump and a small step for supporting are punched at the middle far end; After the plastic base and the shielding sheet are installed, the main part of the shielding sheet is installed in the groove on the plastic base, wherein the narrow plate is located in the narrow square groove, the wide back plate is located in the narrow through groove, and the bent wall of the extended part of the shielding sheet is installed on both sides of the plastic base, wherein the small spring sheet is located in the square groove, and the small step is located in the step.

4. The straight socket connector structure according to claim 3, characterized in that: The socket contact and its connecting portion are an integrated structure, the connecting portion is a welding end, and in the installed state, the socket contact is welded to the printed circuit board through its connecting portion, and the cross-sectional shape of the connecting portion is circular or rectangular; The joint is a square cantilever beam welding terminal.

5. The straight socket connector structure according to claim 3, characterized in that: The socket contact and its connecting part are detachable structures. The connecting part is a crimping terminal, including a cylindrical needle structure in the head area, a supporting shoulder structure in the middle area, and a fisheye structure at the tail end. The connecting end of the socket contact and the connecting part is provided with a four-petal groove. In the installed state, the cylindrical needle is inserted into the four-petal groove, and the supporting shoulder is inserted into the petal groove, and the fisheye is press-fitted with the printed circuit board. After the socket contact and the plastic base are installed, the supporting shoulder on the socket contact is located in the step groove, playing an axial supporting role. The connector is a crimping terminal with a fisheye structure.

6. The straight socket connector structure according to claim 4 or 5, characterized in that: The metal shell is a rectangular structure, one end of the metal shell has a docking cavity, one side of the docking cavity has two positioning grooves, a positioning boss is designed in the docking cavity, the other end of the metal shell has a mounting cavity connected to the docking cavity, both sides of the mounting cavity are provided with limiting grooves, and the connection end of the plastic base and the metal shell has a positioning step; When installed, the positioning step fits with the positioning boss, the shielding plate axially supports the plastic base and the supporting bulge on it is stuck in the limiting groove, the docking area of ​​the socket contact is located in the docking cavity, the crimping terminals of the shielding plate are located at both ends of the socket contact, and the small spring sheets on the shielding plate fit with the inner wall of the metal shell to form a connection.

7. The straight socket connector structure according to claim 6, characterized in that: It also includes a nut attachment, which is a cylindrical structure, one end of which has an extended step and a milling plane, and the other end of which is provided with a riveted thin-wall structure; The metal shell is also provided with two square grooves symmetrically distributed on both sides of the docking cavity, and the square grooves have circular mounting through holes extending downward to the bottom; In the installed state, the nut attachment is inserted into the circular installation through hole, wherein the step is pressed into the square groove, and the milled surface fits on the wall of the square groove to prevent rotation.

8. The straight socket connector structure according to claim 7, characterized in that: The other end of the metal shell is provided with a support step extending outward, and a transition chamfer is arranged inside the support step at a position corresponding to the mouth of the through hole.

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