Plug-in matching type signal connector for PCB, adapter and printed board socket

Abstract

A plug-in matching type signal connector for a PCB comprises an external plug, an adapter and a printed board socket which are sequentially arranged in a left-right plug-in matching mode, the printed board socket is welded and fixed to the PCB, one axial end of the adapter penetrates through a panel opening of a case cabinet and is connected with the printed board socket in the case cabinet in a plug-in mode, and the other end of the adapter is connected with the external plug in a plug-in mode. The plug-in matching type signal connector for the PCB is simple in structure, small in size and convenient to assemble, reliable connection and stable fixation among a plurality of components can be completed only through simple plug-in connection of the whole signal connector, the problems that manual assembly is tedious in operation, easy to assemble mistakenly and difficult to operate are solved, automatic assembly can be achieved, and production efficiency is improved. And reliable connection and transmission of electric signals from the outside of the case cabinet to the PCB in the case cabinet can be realized conveniently, quickly and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB connectors, in particular to a plug-in matching signal connector, a switching component and a printed board socket for PCB. Background Art

[0002] In order to transmit the electrical signal from the outside of the chassis cabinet to the PCB inside the chassis cabinet, as shown in the attached Figure 1 As shown, the method adopted in the prior art is: a wire or cable 27 is welded on a conventional connector 26 and then passed through an opening in a panel 4 on a chassis cabinet, and then the end of the wire or cable is fixed to the PCB by a terminal or a screw 28.

[0003] This existing electrical signal connection transmission method has the following significant defects:

[0004] 1. When assembling the connector components on the chassis cabinet, the operation is cumbersome and requires workers to assemble them manually, which is inefficient and has the risk of assembly errors;

[0005] 2. Usually, the internal space of the chassis cabinet is relatively small, and the bending radius of the wire or cable is also small, which cannot meet the requirements of use;

[0006] 3. The tail of the wire or cable needs to be fixed on the PCB, which is difficult to operate and cannot meet the automated assembly requirements.

[0007] Therefore, how to improve the structure of the existing PCB connector assembly so that it can conveniently, quickly and efficiently realize the connection and transmission of electrical signals from the outside of the chassis cabinet to the PCB inside the chassis cabinet is a problem that needs to be solved urgently in this field. Utility Model Content

[0008] The technical purpose of the utility model is to provide a plug-in signal connector, an adapter and a printed circuit board socket for PCB, which have a compact overall structure and are easy to assemble. Reliable connection and firm fixation between multiple components can be completed only through simple plug-in connection, and automatic assembly can be realized, thereby improving space utilization and assembly efficiency, and meeting the quality consistency requirements of assembly.

[0009] The utility model adopts the following technical solution to solve the above technical problems: a plug-in matching signal adapter for PCB, comprising an insulating support assembly and a transfer contact arranged through the insulating support assembly, the insulating support assembly comprising an insulator I located at a plug-in front end and an insulator II located at a plug-in rear end, the insulator I can be inserted into a panel opening of a chassis cabinet, one axial end of the transfer contact extends out of the front end face of the insulator I for plugging and connecting with a printed circuit board socket connected to the PCB, a plug-in guide for guiding the transfer member to be plugged and connected with the printed circuit board socket is also extended outwardly on the front end face of the insulator I, and the other axial end of the transfer contact extends out of the rear end face of the insulator II so that the transfer member can be plugged and connected with an external plug.

[0010] Furthermore, the insulating support assembly also includes a supporting shell covering the outside of insulator I and insulator II, and the plug-in front end of the supporting shell is provided with a shell support ring for passing through the opening of the chassis cabinet panel, insulator I is sleeved in the shell support ring, and the front end face of insulator I exceeds the outer end face of the shell support ring.

[0011] Furthermore, the support shell is provided with a guide keyway on the plugging interface for mating connection with the external plug.

[0012] Furthermore, a boss for being inserted into a printed circuit board socket is arranged on the front end surface of the insulator I, and the transfer contact and the insertion guide are both arranged on the boss.

[0013] Furthermore, an anti-rotation key slot is provided on the insulator I, and a positioning key is provided in the shell support ring. The cooperation between the positioning key and the anti-rotation key slot can realize the anti-rotation fixation of the insulator I in the shell support ring.

[0014] Furthermore, the transfer contact comprises two double-ended pins arranged symmetrically on the left and right, and a creepage groove for increasing the creepage distance between the two double-ended pins is provided on the front end surface of the insulator I at a position between the two double-ended pins.

[0015] Furthermore, the longitudinal section of the inserting guide is fan-shaped, and a supporting rib extending along the axial direction of the inserting guide is provided at the bottom of the fan-shaped structure.

[0016] A plug-in matching printed circuit board socket for PCB comprises a socket insulator, a socket contact and a cover plate. One end of the socket contact is a socket structure sleeved in the socket insulator for plugging and connecting with an adapter, and the other end is a welding end extending out of the socket insulator for welding and fixing with the PCB. A spring claw for matching with the PCB and fixing the entire printed circuit board socket on the PCB is arranged on the outer wall surface of the socket insulator. The cover plate is buckled and fixed to the tail end of the socket insulator for buckling and limiting the socket contact inside the socket insulator.

[0017] Furthermore, a guide cavity is provided on the plug-in interface of the socket insulator, and the guide cavity can cooperate with the plug-in guide provided on the adapter to provide floating guidance when the adapter is plugged and connected with the printed circuit board socket. A chamfered structure is provided at the opening of the guide cavity, and a guide column I for guiding the entire printed circuit board socket to be assembled and fixed on the PCB is also provided on the outer wall surface of the socket insulator;

[0018] The cover plate is provided with an assembly groove for accommodating the welding end of the socket contact, and the cover plate is also provided with a guide column II, which can cooperate with the preset guide hole on the socket insulator to achieve the buckling and fixing of the cover plate on the tail end of the socket insulator.

[0019] A plug-in signal connector for PCB includes an external plug, an adapter and a printed circuit board socket which are sequentially plugged and matched on the left and right sides. The printed circuit board socket is welded and fixed on the PCB. One axial end of the adapter passes through the panel opening of the chassis cabinet and is plugged and connected with the printed circuit board socket in the chassis cabinet, and the other end is plugged and connected with the external plug.

[0020] Beneficial effects:

[0021] 1. The utility model is a plug-in signal connector for PCB, which has a simple structure, a compact size and is easy to assemble. The signal connector as a whole can complete the reliable connection and firm fixation between multiple components only through simple plug-in connection, avoiding the problems of cumbersome manual assembly operation, easy assembly errors and difficult operation, and can realize automatic assembly, and can conveniently, quickly and efficiently realize the reliable connection and transmission of electrical signals from the outside of the chassis cabinet to the PCB inside the chassis cabinet.

[0022] 2. The utility model provides a plug-in signal connector, adapter and printed circuit board socket for PCB. The printed circuit board socket is small in size, which solves the problem of too small cable bending radius in the prior art and improves the utilization rate of space. The printed circuit board socket can be welded to the PCB through an automated procedure, and the adapter is plugged and fixed with the printed circuit board socket during assembly, which can realize automated assembly and improve production efficiency. The problems of assembly efficiency and installation difficulty in the prior art are solved. At the same time, the automated assembly also meets the quality consistency requirements of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the connection method in the prior art;

[0024] Figure 2 This is a schematic diagram of the overall structure of the utility model before plugging;

[0025] Figure 3 This is a schematic diagram of the overall structure of the utility model after plugging;

[0026] Figure 4 is a schematic diagram of the structure of the adapter;

[0027] Figure 5 The exploded diagram of the structure of the adapter is shown;

[0028] Figure 6 It is a structural schematic diagram of the front end surface of the adapter;

[0029] Figure 7 It is a schematic diagram of the structure before and after the adapter is plugged into the printed circuit board socket;

[0030] Figure 8 It is a structural schematic diagram of the rear end surface of the adapter;

[0031] Fig. 9 It is a structural diagram of a printed circuit board socket;

[0032] Fig.10 The exploded diagram of the structure of the printed circuit board socket is shown;

[0033] Fig.11 The exploded diagram of the structure of the printed circuit board socket is shown;

[0034] Description of the drawings: 1. Transfer contact, 2. Insulator I, 3. Insulator II, 4. Panel, 5. PCB, 6. Insertion guide, 7. External plug, 8. Support shell, 9. Shell support ring, 10. Guide keyway, 11. Boss, 12. Anti-rotation keyway, 13. Positioning key, 14. Creepage groove, 15. Support rib, 16. Socket insulator, 17. Socket contact, 18. Cover plate, 19. Spring claw, 20. Guide cavity, 21. Guide column I, 22. Assembly groove, 23. Guide column II, 24. Guide hole, 25. Step, 26. Connector, 27. Cable, 28. Screw, 29. Rubber ring, 30. Rubber pad. DETAILED DESCRIPTION

[0035] The technical solution of the utility model is further elaborated and illustrated in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0038] As shown in the figure, in order to achieve the technical purpose of transmitting electrical signals from the outside of the chassis cabinet to the PCB inside the chassis cabinet, the utility model designs a signal connector with three components plugged in left and right in sequence to achieve this technical purpose.

[0039] like Figure 2 , Figure 3 As shown, a plug-in signal connector for PCB of the utility model comprises an external plug 7, an adapter and a printed circuit board socket which are sequentially plugged and matched on the left and right sides. The printed circuit board socket is welded and fixed on the PCB 5. One axial end of the adapter passes through the opening of the panel 4 of the chassis cabinet and is plugged and connected with the printed circuit board socket in the chassis cabinet, and the other end is plugged and connected with the external plug 7.

[0040] When assembling the signal connector, after the printed circuit board socket is welded to the PCB 5, the PCB component consisting of the printed circuit board socket and the PCB is installed as a whole into the chassis cabinet, and then the adapter is assembled to the opening of the chassis cabinet panel 4. During the assembly process, the adapter is plugged into the printed circuit board socket, and finally the external plug 7 is plugged into the adapter to form the entire link, and the electrical signal is transmitted to the PCB through the connector plug, the adapter and the printed circuit board socket.

[0041] In the signal connector structure, the printed circuit board socket is small in size, which solves the problem of too small cable bending radius in the prior art and improves the utilization rate of space. The printed circuit board socket can be automatically welded to the PCB, and the adapter can be plugged into the printed circuit board socket during assembly, so that automated assembly can be achieved and production efficiency can be improved. The problem of assembly efficiency in the prior art is solved. At the same time, automated assembly also meets the quality consistency requirements of assembly.

[0042] like Figures 4 to 8As shown, a plug-in signal adapter for PCB of the utility model comprises an insulating support assembly and a transfer contact 1 arranged through the insulating support assembly, the insulating support assembly comprises an insulator Ⅰ2 located at the front end of the plug-in and an insulator Ⅱ3 located at the rear end of the plug-in, the insulator Ⅰ2 is passed through the opening of the panel 4 of the chassis cabinet, one axial end of the transfer contact 1 extends out of the front end face of the insulator Ⅰ2, and is plugged and connected with the printed circuit board socket connected to the PCB5, and a plug-in guide 6 for guiding the transfer member to be plugged and connected with the printed circuit board socket is also extended outward on the front end face of the insulator Ⅰ2, and the other axial end of the transfer contact 1 extends out of the rear end face of the insulator Ⅱ3, so that the transfer member can be plugged and connected with the external plug 7.

[0043] Furthermore, the insulating support assembly also includes a supporting shell 8 covering the outside of insulator I2 and insulator II3, and the plug-in front end of the supporting shell 8 is provided with a shell support ring 9 for passing through the opening of the chassis cabinet panel 4, and the insulator I2 is sleeved in the shell support ring 9, and the front end face of the insulator I2 exceeds the outer end face of the shell support ring 9.

[0044] Furthermore, the support housing 8 is provided with a guide keyway 10 on the plugging interface for mating with the external plug 7 .

[0045] Furthermore, a boss 11 for being inserted into a printed circuit board socket is provided on the front end surface of the insulator Ⅰ 2 , and the transfer contact 1 and the plug-in guide 6 are both provided on the boss 11 .

[0046] Furthermore, an anti-rotation key slot 12 is provided on the insulator Ⅰ2, and a positioning key 13 is provided in the shell support ring 9. The cooperation between the positioning key 13 and the anti-rotation key slot 12 can realize the anti-rotation fixation of the insulator Ⅰ2 in the shell support ring 9.

[0047] Furthermore, the transfer contact 1 comprises two double-ended pins symmetrically arranged on the left and right, and a creepage groove 14 for increasing the creepage distance between the two double-ended pins is provided on the front end surface of the insulator Ⅰ2 and located between the two double-ended pins.

[0048] Furthermore, the longitudinal section of the plug-in guide 6 is fan-shaped, where the longitudinal section direction is perpendicular to the plug-in direction of the plug-in guide 6 , and a support rib 15 extending axially along the plug-in guide 6 is provided at the bottom of the fan-shaped structure.

[0049] In the above-mentioned adapter structure, if Figure 5As shown, the adapter mainly includes a rubber ring 29, a supporting shell 8, a shell supporting ring 9, a rubber pad 30, an insulator II3, a transfer contact 1 and an insulator I2. The rubber ring plays a waterproof role after the external plug 7 and the adapter are plugged in. The supporting shell 8 plays a role in supporting the entire adapter. The insulator I2 and the insulator II3 play a role in fixing the transfer contact 1 and providing an insulating environment for the transfer contact 1. The rubber pad plays a sealing role. The transfer contact 1 plays a role in transmitting electrical signals.

[0050] like Figure 4 As shown, the printed circuit board socket connection end of the adapter is provided with a housing support ring 9, which passes through the opening of the panel 4 during installation to support the entire adapter. A transfer contact 1 is provided inside the housing support ring 9, which serves to transmit electrical signals. The transfer contact 1 is a double-ended pin structure.

[0051] An insertion guide 6 is provided on the front end surface of the insulator Ⅰ2, and the function of the insertion guide 6 is to guide and align the adapter and the printed circuit board socket when they are plugged into each other.

[0052] like Figure 6 As shown, on the front end face of the adapter, two pins are arranged in the horizontal direction, and in the vertical direction, an anti-rotation key slot 12, a boss 11, a creepage groove 14 and an insertion guide 6 are arranged sequentially from bottom to top. Because two pins are arranged in the horizontal direction, there is no space for the anti-rotation key slot 12 and the positioning key 13 in the horizontal direction. Therefore, the anti-rotation key slot 12 is arranged in the vertical direction, which helps to improve the space utilization of the connector.

[0053] Among them, the function of the anti-rotation key slot 12 is to set the anti-rotation key slot 12 on the insulator Ⅰ2, and the positioning key 13 should be correspondingly set on the supporting shell 8. After the anti-rotation key slot 12 and the positioning key 13 are assembled together, they can play the role of preventing rotation and fixing the insulator Ⅰ2.

[0054] like Figure 7 As shown, the function of the boss 11 is that after the adapter and the printed circuit board socket are plugged together, the boss on the adapter can cooperate with the step of the printed circuit board socket to wrap the entire adapter contact 1 extending from the entire front end surface of the adapter into the socket insulator 16 of the printed circuit board socket, thereby playing a safety role.

[0055] The function of the creepage groove 14 is to increase the creepage distance between the two pins to meet safety requirements. If there is a creepage groove 14, the creepage will be carried out along the edge of the creepage groove 14, and if there is no creepage groove 14, the creepage will be carried out along the surface. Obviously, the creepage distance of the structure with the creepage groove 14 is greater than that of the structure without the creepage groove 14.

[0056] The longitudinal section of the plug-in guide 6 is designed to be fan-shaped, with the plug-in direction perpendicular to the plug-in guide 6. During the plug-in process between the adapter and the printed circuit board socket, the plug-in guide 6 first contacts the cavity of the printed circuit board socket to play a guiding role. When the plug-in guide 6 guides the cavity of the printed circuit board socket, the plug-in guide 6 will be subjected to a radial force. In order to improve the strength of the plug-in guide 6, a support rib 19 is axially arranged at the bottom of the plug-in guide 6 to improve the strength of the plug-in guide 6. The main reason for setting the support rib 15 to the bottom in the vertical direction is to balance the horizontal force during plug-in.

[0057] like Figure 8 As shown, on the plugging interface of the external plug 7 connecting end of the adapter located outside the chassis, two pins are arranged in the horizontal direction, and two guide key slots 10 are arranged in the vertical direction. During the plugging process between the adapter and the external plug 7, the two guide key slots 10 cooperate with the two plugging guide keys on the external plug 7 for guidance. The main reason for setting the two guide key slots 10 in the vertical direction is to achieve a reasonable layout on the plugging interface and avoid excessive crowding in the horizontal direction.

[0058] like Figures 9 to 11 As shown, a plug-in matching printed circuit board socket for PCB of the utility model comprises a socket insulator 16, a socket contact 17 and a cover plate 18. The socket contact 17 is an L-shaped structure. One end of the L-shaped structure is a socket structure sleeved in the socket insulator 16, which is used for plugging and connecting with the adapter, and the other end is a welding end. The welding end is a cylindrical tail rod extending out of the socket insulator 16, which is used for welding and fixing with the PCB5. A spring claw 19 is provided on the outer wall surface of the socket insulator 16 for matching with the PCB5 to fix the entire printed circuit board socket on the PCB5. The cover plate 18 is buckled and fixed to the tail end of the socket insulator 16, which is used for buckling and limiting the socket contact 17 inside the socket insulator 16.

[0059] Furthermore, a guide cavity 20 is provided on the plug-in interface of the socket insulator 16, and the guide cavity 20 can cooperate with the plug-in guide 6 provided on the adapter to provide floating guidance when the adapter is plugged and connected with the printed circuit board socket. A chamfered structure is provided at the opening of the guide cavity 20, and a guide column I 21 for guiding the entire printed circuit board socket to be assembled and fixed on the PCB 5 is also provided on the outer wall surface of the socket insulator 16;

[0060] The cover plate 18 is provided with an assembly groove 22 for accommodating the cylindrical tail rod of the socket contact 17. The cover plate 18 is also provided with a guide column II 23, which can cooperate with a preset guide hole 24 on the socket insulator 16 to achieve the buckling and fixing of the cover plate 18 on the tail end of the socket insulator 16.

[0061] like Fig.10and Fig.11 As shown, the printed circuit board socket mainly includes a socket insulator 16, a socket contact 17 and a cover plate 18. The main function of the socket insulator 16 is to support and fix the entire printed circuit board socket and guide it when plugging with the adapter.

[0062] The socket contact 17 is L-shaped, with a socket at one end and a cylindrical tail rod at the other end. The socket end is plugged into the pin of the adapter, and the tail rod is welded to the PCB.

[0063] The main function of the cover plate 18 is to fix the socket contact 17 and cover the tail of the entire printed circuit board socket to ensure that the main body of the socket contact 17 except the welding end is not exposed, which plays a role in safety. The main body of the cover plate 18 is an L-shaped structure with an opening facing downward. The cover plate 18 is provided with an assembly groove 22 for accommodating the cylindrical tail rod of the socket contact 17. The cover plate 18 is also provided with a guide column II 23. Among the three guide columns II 23, the guide column II 23 located in the middle is a cylindrical structure, and the two guide columns II 23 on both sides are rectangular columnar structures. During the assembly process of the cover plate 18, the three guide columns II 23 can cooperate with the three guide holes 24 preset on the socket insulator 16 to realize the buckling and fixing of the cover plate 18 at the tail end of the socket insulator 16.

[0064] like Fig. 9 As shown, a step 25 is provided on the printed circuit board socket. The function of the step 25 is that when the printed circuit board socket and the adapter are plugged in, the step 25 cooperates with the boss 11 on the adapter to ensure that the entire adapter contact 1 is not exposed, thereby playing a safety role.

[0065] A guide cavity 20 is provided on the printed circuit board socket, and the edges of the guide cavity 20 are chamfered. When the printed circuit board socket is plugged into the adapter, there is a gap between the plug-in guide 6 on the adapter and the guide cavity 20 at the end of the printed circuit board, so that it can play a guiding and floating role during the plug-in process.

[0066] The socket contacts 17 in the printed circuit board socket play a role in transmitting electrical signals.

[0067] The outer surface of the socket insulator 16 of the printed circuit board socket is provided with a U-shaped spring claw 19, which serves to fix the entire printed circuit board socket when the printed circuit board socket is assembled on the PCB. The guide column I 21 on the outer surface of the socket insulator 16 serves to guide the socket when it is assembled on the PCB.

[0068] The tail end of the L-shaped socket contact 17 is welded to the PCB to transmit electrical signals.

[0069] The utility model provides a plug-in matching signal connector, a switching piece and a printed board socket for PCB. The overall structure of the device is simple, the installation is convenient, the use is safe and reliable, and the use effect is good.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the entire content of the utility model. When the actual product is used, corresponding adjustments are made according to the connector, charging socket structure and vehicle body layout. Although the utility model has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to make formal modifications to the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. All formal modifications, equivalent replacements, etc. made within the scope of the idea of ​​the utility model should be included in the scope of protection of the utility model.

Claims

1. A plug-in signal adapter for a PCB, comprising an insulating support component and a transfer contact (1) disposed through the insulating support component, characterized in that: The insulating support assembly comprises an insulator I (2) located at the front end of the plug-in connection and an insulator II (3) located at the rear end of the plug-in connection. The insulator I (2) can be inserted into an opening of a panel (4) of a chassis cabinet. One axial end of the adapter contact (1) extends out of the front end surface of the insulator I (2) for plugging and connecting with a printed circuit board socket connected to a PCB (5). A plug-in guide (6) for guiding the adapter to be plugged and connected with the printed circuit board socket is also extended outwardly from the front end surface of the insulator I (2). The other axial end of the adapter contact (1) extends out of the rear end surface of the insulator II (3) so that the adapter can be plugged and connected with an external plug (7).

2. The plug-in signal adapter for PCB according to claim 1, characterized in that: The insulating support assembly further comprises a support shell (8) covering the outside of the insulator I (2) and the insulator II (3); the plug-in front end of the support shell (8) is provided with a shell support ring (9) for passing through an opening of a chassis cabinet panel (4); the insulator I (2) is sleeved in the shell support ring (9), and the front end face of the insulator I (2) exceeds the outer end face of the shell support ring (9).

3. The plug-in signal adapter for PCB according to claim 2, characterized in that: The support shell (8) is provided with a guide keyway (10) on a plugging interface for mating connection with the external plug (7).

4. A plug-in signal adapter for PCB according to claim 1 or 2, characterized in that: A boss (11) for being inserted into a printed circuit board socket is arranged on the front end surface of the insulator I (2), and the transfer contact (1) and the insertion guide (6) are both arranged on the boss (11).

5. The plug-in signal adapter for PCB according to claim 2, characterized in that: The insulator I (2) is provided with an anti-rotation key slot (12), and a positioning key (13) is provided in the housing support ring (9). The positioning key (13) cooperates with the anti-rotation key slot (12) to achieve anti-rotation fixation of the insulator I (2) in the housing support ring (9).

6. The plug-in signal adapter for PCB according to claim 1, characterized in that: The transfer contact (1) comprises two double-ended pins arranged symmetrically on the left and right, and a creepage groove (14) for increasing the creepage distance between the two double-ended pins is provided on the front end surface of the insulator I (2) at a position between the two double-ended pins.

7. The plug-in signal adapter for PCB according to claim 1, characterized in that: The longitudinal section of the insertion guide (6) is fan-shaped, and a support rib (15) extending axially along the insertion guide (6) is provided at the bottom of the fan-shaped structure.

8. A plug-in matching printed circuit board socket for PCB, characterized in that: The invention comprises a socket insulator (16), a socket contact piece (17) and a cover plate (18); one end of the socket contact piece (17) is a socket structure sleeved in the socket insulator (16) and used for plugging and connecting with the adapter; the other end is a welding end extending out of the socket insulator (16) and used for welding and fixing with the PCB (5); a spring claw (19) is provided on the outer wall surface of the socket insulator (16) and used for cooperating with the PCB (5) to fix the entire printed circuit board socket on the PCB (5); the cover plate (18) is buckled and fixed to the rear end of the socket insulator (16) and used for buckling and limiting the socket contact piece (17) inside the socket insulator (16).

9. The plug-in matching printed circuit board socket for PCB according to claim 8, characterized in that: A guide cavity (20) is provided on the plug-in interface of the socket insulator (16), and the guide cavity (20) can cooperate with a plug-in guide (6) provided on the adapter to provide floating guidance when the adapter is plugged and connected to the printed circuit board socket. A chamfered structure is provided at the opening of the guide cavity (20), and a guide column I (21) for guiding the entire printed circuit board socket to be assembled and fixed on the PCB (5) is also provided on the outer wall surface of the socket insulator (16); The cover plate (18) is provided with an assembly groove (22) for accommodating the welding end of the socket contact piece (17), and the cover plate (18) is also provided with a guide column II (23), which can cooperate with a guide hole (24) preset on the socket insulator (16) to achieve the buckling and fixing of the cover plate (18) on the rear end of the socket insulator (16).

10. A plug-in signal connector for PCB, characterized in that: It comprises an external plug (7), an adapter and a printed circuit board socket which are sequentially plugged and matched on the left and right sides. The printed circuit board socket is welded and fixed on the PCB (5). One axial end of the adapter passes through an opening of a panel (4) of a chassis cabinet and is plugged and connected to the printed circuit board socket in the chassis cabinet. The other end is plugged and connected to the external plug (7).

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