Plug for insertion between PCBs, socket for insertion between PCBs, and connector

Abstract

The invention provides a plug for insertion between PCBs, a socket for insertion between PCBs, and a connector. The plug inserted between the PCBs comprises a plastic shell and an elastic piece assembly, the plastic shell comprises a first plastic base and a plastic cover plate which are connected, the first plastic base is provided with a plurality of limiting grooves, and one side of the first plastic base is provided with a hollow groove; the elastic piece assembly comprises a plastic fixing seat, a bent elastic piece and a first welding block, the plastic fixing seat is connected with the first plastic base and the plastic cover plate, a part of structure of the bent elastic piece is located in the plastic fixing seat, one end of the bent elastic piece correspondingly penetrates through the limiting groove, and the other end of the bent elastic piece is located in the first welding block. One end of the bending elastic piece is connected with a hollow groove, so that the bending elastic piece is connected with a contact pin of a socket in an inserted mode, the other end of the bending elastic piece is connected with the corresponding first welding block, and the first welding block is located in the hollow groove and used for being welded to a bonding pad of a first circuit board.

Description

Technical Field

[0001] The present disclosure relates to the field of connectors, and in particular to a plug for inter-PCB board insertion, a socket for inter-PCB board insertion, a connector and a connector. Background Art

[0002] Electronic equipment connectors, also known as connectors, are the most basic mechanical electrical connection devices that achieve detachable connections between circuit devices, components or assemblies. Connectors usually consist of plugs and sockets. The plug is one end that connects to the circuit or device, and the socket is the end that accepts the plug.

[0003] In traditional technology, connectors generally use metal shell structures to improve structural strength. The metal shell has a good protection function for other internal parts, but the metal shell often increases the weight and cost of the connector. In order to reduce the weight and cost of the connector, manufacturers replace metal shells with plastic shells. For example, Chinese patent application number CN202121260382.3 discloses a plug connector whose shell is made of plastic material. However, the cable assembly of the above-mentioned plug connector is enclosed in a plastic shell. When the plug shakes during use, the connection between the cable assembly and the plug end of the socket is not stable enough. On the other hand, the stability of the welding between the cable assembly enclosed in the plastic shell and the external vertically arranged PCB board is difficult to ensure, that is, the contact stability of the above-mentioned plug connector is poor, which leads to unstable signal transmission.

[0004] Therefore, there is an urgent need for a connector with a lighter structure and higher connection stability. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a plug for inter-PCB board insertion, a socket for inter-PCB board insertion, a connector and a connector with a lighter structure and higher connection stability.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A plug for inter-PCB board insertion, comprising:

[0008] A plastic shell, the plastic shell comprising a first plastic base and a plastic cover, the plastic cover is mounted on the end of the first plastic base, the first plastic base is provided with a plurality of limit grooves, one side of the first plastic base is provided with a hollow groove, and the outer peripheral wall of the first plastic base is convexly provided with a welding column, the welding column is used for welding with the first circuit board;

[0009] A guide sleeve, the guide sleeve is installed on the first plastic base, and the guide sleeve is used for the guide column of the socket to pass through;

[0010] A spring element assembly, the spring element assembly includes a plastic fixing seat, a plurality of bent spring elements and a plurality of first welding blocks, the plastic fixing seat is respectively connected to the first plastic base and the plastic cover plate, the bent spring elements and the first welding blocks are arranged in a one-to-one correspondence, a partial structure of each of the bent spring elements is located in the plastic fixing seat and connected to the plastic fixing seat, one end of the bent spring element extends to the outside of the plastic fixing seat and passes through the limiting groove accordingly, so that the bent spring element is plugged into the pin of the socket, the other end of the bent spring element is bent and extends to the outside of the plastic fixing seat and is connected to the corresponding first welding block, the first welding block is located in the hollow groove, and the first welding block is used to be welded to the pad of the first circuit board.

[0011] In one embodiment, the plastic fixing seat is respectively clamped with the first plastic base and the plastic cover.

[0012] In one embodiment, a first clamping groove is formed on the bottom wall of the first plastic base, a second clamping groove is formed on a side of the plastic cover adjacent to the first plastic base, the plastic fixing seat has a first side surface and a second side surface perpendicular to each other, a first clamping boss is convexly formed on the first side surface, the first clamping boss is located in the first clamping groove, a second clamping boss is convexly formed on the second side surface, the second clamping boss is located in the second clamping groove, so that the plastic fixing seat is clamped with the first plastic base and the plastic cover respectively; and / or,

[0013] The first plastic base includes a front end plug-in area, a middle installation area and a rear end fixing area connected in sequence, the plastic cover is installed in the rear end fixing area, and the middle installation area is provided with a mounting end surface at one end adjacent to the front end plug-in area. Each of the limit grooves includes a first limit groove body and a second limit groove body that are connected to each other. The first limit groove body is opened in the front end plug-in area, the second limit groove body is opened in the mounting end surface, and the hollow groove is opened on one side of the middle installation area.

[0014] In one embodiment, each of the bent spring pieces includes an elastic contact portion, a fixing portion, a bending portion and a mounting portion connected in sequence, the elastic contact portion is used to be plugged with a pin of the socket, the fixing portion is partially located in the first limiting groove body and the second limiting groove body, the bending portion is used to be bent and then covered in the plastic fixing seat, so that a preset angle exists between the elastic contact portion and the mounting portion, and the mounting portion is connected to the first welding block; and / or,

[0015] An embedding groove is formed at the end of the mounting portion, and the first welding block is partially located in the embedding groove.

[0016] In one embodiment, the plug also includes a locking screw, a connecting hole is opened at the end of the first plastic base, the connecting hole includes a connecting groove body, a limiting hole body and a screw hole body which are sequentially connected along the width direction of the first plastic base, the guide sleeve includes a guide body and a limiting body which are connected to each other, the guide body passes through the guide groove body so that the limiting body is located in the limiting hole body, a threaded structure is provided at the end of the limiting body away from the guide body, the locking screw passes through the screw hole body and is screwed to the threaded structure, a guide channel is opened in the guide body, and the guide channel is used to be plugged into the guide column of the socket.

[0017] A socket for inter-PCB board insertion, the socket for inter-PCB board insertion comprising a second plastic base, a pin assembly and a guide column, the outer peripheral wall of the second plastic base is convexly provided with a support column, the support column is used to connect with the second circuit board, the pin assembly comprises a plurality of pins and a plurality of second welding blocks, the plurality of pins are connected with the second plastic base, each of the pins is arranged in parallel with the second plastic base, the pins and the second welding blocks are arranged in a one-to-one correspondence, one end of the pin is connected with the second welding block, the other end of the pin away from the second welding block is used for plugging with a bent elastic piece, each of the second welding blocks is exposed outside the second plastic base, so that the second welding block is welded to the pad of the second circuit board;

[0018] The guide column is installed on the second plastic base, and the guide column is used to pass through the guide sleeve of the plug.

[0019] In one embodiment, the second plastic base includes a base body and a plug-in body, the plug-in body is connected to a side surface of the base body, the base body is provided with a third clamping groove, the plug-in body is provided with a fourth clamping groove, the third clamping groove is communicated with the fourth clamping groove, one end of the plug-in pin passes through the third clamping groove and is located in the fourth clamping groove, so that the plug-in pin is plugged with the bent elastic piece; and / or,

[0020] The plug pin includes a plug-in portion, a convex clamping portion and a connecting portion connected in sequence, the plug-in portion is located in the fourth clamping groove and plugged with the bent spring piece, the convex clamping portion is interference clamped in the third clamping groove, and the connecting portion is located on the outside of the base body and connected to the second welding block.

[0021] In one embodiment, the second welding block includes a welding body and a clamping boss, the connecting portion is provided with a fifth clamping groove, the clamping boss is located in the fifth clamping groove, so that the second welding block is clamped with the pin, and the welding body is used for welding with a circuit board; and / or,

[0022] A limiting hook is convexly provided on the side surface of the junction between the convex clamping portion and the connecting portion, and the limiting hook is located outside the third clamping groove to enable the insertion pin to be clamped with the second plastic base.

[0023] In one embodiment, the second plastic base is provided with a mounting hole, the inner side surface of the second plastic base is provided with a limiting step, the limiting step is arranged corresponding to the mounting hole, the guide column comprises a guide column body, a limiting boss and a mounting seat, the guide column body is fixedly connected to the mounting seat, the limiting boss is sleeved at the junction where the guide column body and the mounting seat are connected, the mounting seat is located in the mounting hole, the limiting boss is engaged with the limiting step, and the guide column body is used to pass through the guide sleeve of the plug; and / or,

[0024] A guiding bevel is arranged at one end of the guide column body away from the limiting step, and an alignment plane is arranged on the side surface of the guide column body.

[0025] A connector comprises a plug for inter-PCB board insertion as described in any of the above embodiments and a socket for inter-PCB board insertion as described in any of the above embodiments, wherein the plug for inter-PCB board insertion is connected to the socket for inter-PCB board insertion, the plug for inter-PCB board insertion is used to connect to a first circuit board, and the socket for inter-PCB board insertion is used to connect to a second circuit board.

[0026] Compared with the prior art, the present invention has at least the following advantages:

[0027] 1. In the above-mentioned plug inserted between PCB boards, the bent spring piece part structure is installed in the plastic fixing seat, and the plastic fixing seat is respectively connected to the first plastic base and the plastic cover plate. One end of the bent spring piece passes through the limiting groove so that the limiting groove limits and fixes the bent spring piece. The other end of the bent spring piece is connected to the first welding block, and the first welding block is located in the hollow groove and welded to the first circuit board to further fix the bent spring piece and realize signal transmission. In this way, by limiting and fixing the bent spring piece at multiple places, the pin connection stability of the socket inserted between the bent spring piece and the PCB board is higher, which is more conducive to signal transmission.

[0028] 2. The shell of the above-mentioned plug inserted between PCB boards is made of plastic material, which effectively reduces the weight of the overall structure and the production cost compared with the traditional metal shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of a plug for inter-PCB board insertion according to an embodiment;

[0031] Figure 2 for Figure 1 The structural exploded diagram of the plug inserted between the PCB boards shown;

[0032] Figure 3 for Figure 1 A schematic structural diagram of a first plastic base of a plug inserted between PCB boards shown;

[0033] Figure 4 for Figure 1 A schematic diagram of the structure of a spring assembly of a plug inserted between PCB boards shown;

[0034] Figure 5 for Figure 1 Another structural schematic diagram of the spring assembly of the plug inserted between PCB boards shown;

[0035] Figure 6 for Figure 1 A schematic structural diagram of a bent spring piece of a plug inserted between PCB boards is shown;

[0036] Figure 7 for Figure 1 Another structural schematic diagram of a plug inserted between PCB boards shown;

[0037] Figure 8 An exploded view of the structure of a socket for inter-PCB board insertion according to an embodiment;

[0038] Fig. 9 for Figure 8 A schematic structural diagram of a second plastic base of a socket for inter-PCB board insertion shown;

[0039] Fig.10 for Figure 8 A schematic diagram of the structure of a pin assembly of a socket inserted between PCB boards shown;

[0040] Fig.11 for Figure 8 Another structural schematic diagram of the pin assembly of the socket for inter-PCB board insertion shown;

[0041] Fig.12 for Figure 8 A schematic diagram of the structure of the guide column of the socket for inter-PCB board insertion shown;

[0042] Fig.13 A schematic structural diagram of a connector according to an embodiment;

[0043] Fig.14 for Fig.13 The schematic diagram of the structure of the connector connected to the circuit board is shown. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0047] The present invention discloses a plug for inter-PCB board insertion, comprising a plastic shell, a guide sleeve and a spring assembly, wherein the plastic shell comprises a first plastic base and a plastic cover plate, wherein the plastic cover plate is installed at the end of the first plastic base, wherein the first plastic base is provided with a plurality of limit grooves, wherein a hollow groove is provided at one side of the first plastic base, wherein a welding column is convexly provided on the outer peripheral wall of the first plastic base, wherein the welding column is used for welding with the first circuit board; wherein the guide sleeve is installed at the first plastic base, wherein the guide sleeve is used for the guide column of the socket to pass through; wherein the spring assembly comprises a plastic fixing seat, a plurality of bent spring pieces and a plurality of first welding blocks, wherein the guide sleeve is provided with a plurality of guide sleeves and a plurality of first welding blocks; ... The plastic fixing seat is connected to the first plastic base and the plastic cover respectively, the bent spring piece is arranged in a one-to-one correspondence with the first welding block, and a partial structure of each bent spring piece is located in the plastic fixing seat and connected to the plastic fixing seat, one end of the bent spring piece extends to the outside of the plastic fixing seat and passes through the limiting groove accordingly, so that the bent spring piece is plugged into the pin of the socket, and the other end of the bent spring piece is bent and extends to the outside of the plastic fixing seat and is connected to the corresponding first welding block, the first welding block is located in the hollow groove, and the first welding block is used to be welded to the pad of the first circuit board.

[0048] In the above-mentioned plug inserted between PCB boards, the bent spring piece part structure is installed in the plastic fixing seat, and the plastic fixing seat is respectively connected to the first plastic base and the plastic cover plate, one end of the bent spring piece passes through the limiting groove so that the limiting groove limits and fixes the bent spring piece, and the other end of the bent spring piece is connected to the first welding block, and the first welding block is located in the hollow groove and welded to the circuit board to further fix the bent spring piece and realize signal transmission. In this way, by limiting and fixing the bent spring piece at multiple places, the pin connection stability of the socket inserted between the bent spring piece and the PCB board is higher, which is more conducive to signal transmission; since the shell is made of plastic material, compared with the traditional metal shell, the weight and production cost of the overall structure are effectively reduced.

[0049] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0050] like Figures 1 to 4As shown, a plug 10a for inter-PCB board insertion in an embodiment includes a plastic shell 100, a spring assembly 200 and a guide sleeve 800, wherein the spring assembly 200 is installed on the plastic shell 100, and the plastic shell 100 includes a first plastic base 110 and a plastic cover 120, wherein the plastic cover 120 is installed on the end of the first plastic base 110, the first plastic base 110 is provided with a plurality of limiting grooves 111, and a hollow groove 112 is provided on one side of the first plastic base 110, and a welding column 117 is convexly provided on the outer peripheral wall of the first plastic base 110, wherein the welding column 117 is used for welding with the first circuit board 10c, so as to fix the first plastic base 110 with the first circuit board 10c, thereby improving the connection stability between the first plastic base 110 and the first circuit board 10c, and the guide sleeve 800 is installed on the first plastic base 110, and the guide sleeve 800 is used for the guide column of the socket to pass through, so as to play a guiding role.

[0051] Furthermore, the spring assembly 200 includes a plastic fixing seat 210, a plurality of bent spring pieces 220 and a plurality of first welding blocks 230, the plastic fixing seat 210 is respectively connected to the first plastic base 110 and the plastic cover 120, the bent spring pieces 220 and the first welding blocks 230 are arranged one by one, and a partial structure of each of the bent spring pieces 220 is located in the plastic fixing seat 210 and connected to the plastic fixing seat 210, and one end of the bent spring piece 220 extends to the outside of the plastic fixing seat 210 and passes through the limiting groove 111 accordingly, so that the bent spring piece 220 and the PCB board are connected. The pin 610 of the indirect plug-in socket 10b is plugged in, and the other end of the bent spring piece 220 is bent and extends to the outside of the plastic fixing seat 210 and is connected to the corresponding first welding block 230, that is, the two ends of the bent spring piece 220 have a preset angle, that is, the plug 10a for indirect plug-in between the PCB boards is a bent plug to adapt to the high-speed signal interconnection between vertical PCB boards inside a miniaturized chassis or modular components. The first welding block 230 is located in the hollow groove 112, and the first welding block 230 is used to weld with the first circuit board 10c, so that the bent spring piece 220 is conductive with the first circuit board 10c through the first welding block 230.

[0052] In the present embodiment, the plastic fixing seat 210 is made of plastic material, the middle part of the bent spring piece 220 is located in the plastic fixing seat 210 and connected to the plastic fixing seat 210, and the plastic fixing seat 210 is respectively connected and fixed to the first plastic base 110 and the plastic cover 120, so that the fixing effect of the plastic fixing seat 210 is better, the front end of the bent spring piece 220 extends to the outside of the plastic fixing seat 210 and passes through the limiting groove 111 in the first plastic base 110, and the limiting groove 111 plays a limiting and fixing role. The front end of the bent spring piece 220 is located in the limiting groove 111 and is correspondingly plugged with the pin 610 of the socket 10b inserted between the PCB board, so that the plug 10a inserted between the PCB board and the socket 10b inserted between the PCB board are connected, and the end of the bent spring piece 220 After being bent, it extends outside the plastic fixing seat 210, so that the two ends of the bent spring piece 220 have a preset angle, that is, the bent spring piece 220 is not arranged horizontally, so that the plug is suitable for high-speed signal interconnection between vertical PCB boards inside a miniaturized chassis or a modular component, and the end of the bent spring piece 220 is connected to the first welding block 230, and the first welding block 230 is located in the hollow groove 112. When the plug 10a inserted between the PCB boards is assembled with the first circuit board 10c, part of the structure of the first circuit board 10c is located in the hollow groove 112, and the first circuit board 10c and the plug 10a inserted between the PCB boards are arranged vertically to each other. The first welding block 230 is welded to the pad of the first circuit board 10c to achieve conduction between the first circuit board 10c and the plug 10a inserted between the PCB boards. In this embodiment, the first welding block 230 is a tin block.

[0053] In the above-mentioned plug 10a for inter-PCB board insertion, the bent spring piece 220 part of the structure is installed in the plastic fixing seat 210, and the plastic fixing seat 210 is respectively connected to the first plastic base 110 and the plastic cover 120, one end of the bent spring piece 220 passes through the limiting groove 111, so that the limiting groove 111 limits and fixes the bent spring piece 220, and the other end of the bent spring piece 220 is connected to the first welding block 230, and the first welding block 230 is located in the hollow groove 112 and welded to the first circuit board 10c, so as to further fix the bent spring piece 220 and realize signal transmission. In this way, by limiting and fixing the bent spring piece 220 at multiple locations, the connection stability of the bent spring piece 220 and the pin 610 of the socket 10b for inter-PCB board insertion is higher, which is more conducive to signal transmission; because the shell is made of plastic material, compared with the traditional metal shell, the weight and production cost of the overall structure are effectively reduced.

[0054] In one embodiment, the plastic fixing seat 210 is respectively snap-fitted with the first plastic base 110 and the plastic cover 120 , so that the assembly of the plastic fixing seat 210 is more convenient and the fixing effect of the plastic fixing seat 210 is better.

[0055] like Figure 3 , Figure 4 and Figure 5 As shown, in one embodiment, a first snap-in groove 114 is formed on the bottom wall of the first plastic base 110, a second snap-in groove 121 is formed on a side of the plastic cover 120 adjacent to the first plastic base 110, and the plastic fixing seat 210 has a first side surface and a second side surface perpendicular to each other, a first snap-in boss 211 is convexly formed on the first side surface, and the first snap-in boss 211 is located in the first snap-in groove 114, a second snap-in boss 212 is convexly formed on the second side surface, and the second snap-in boss 212 is located in the second snap-in groove 121, so that the plastic fixing seat 210 is snap-into the first plastic base 110 and the plastic cover 120 respectively. In this embodiment, the plastic fixing seat 210 is a rectangular thin sheet structure, the first side surface of the plastic fixing seat 210 is located at the bottom, the first side surface is convexly provided with a first clamping boss 211, the first clamping boss 211 is clamped with the first clamping groove 114, and the second side surface perpendicular to the first side surface is convexly provided with a second clamping boss 212, the second clamping boss 212 is clamped with the second clamping groove 121, so that the plastic fixing seat 210 is clamped and fixed with the middle installation area 110b and the plastic cover 120 respectively.

[0056] like Figure 3 As shown, in one embodiment, the first plastic base 110 includes a front end plug-in area 110a, a middle installation area 110b and a rear end fixing area 110c connected in sequence, the plastic cover 120 is installed in the rear end fixing area 110c, and the middle installation area 110b is adjacent to the front end plug-in area 110a. One end is provided with a mounting end surface 113, and each of the limiting grooves 111 includes a first limiting groove limiting body 111a and a second limiting groove body 111b that are connected, the first limiting groove limiting body 111a is opened in the front end plug-in area 110a, and the second limiting groove body 111b is opened in the mounting end surface 113, and the hollow groove 112 is opened on one side of the middle installation area 110b. In this embodiment, a plug-in cavity is provided in the middle of the front end plug-in area 110a, and the plug-in cavity is used for plugging with the socket 10b. The first limit groove limiting body 111a is provided on the cavity wall of the plug-in cavity. The front end of the bent spring piece 220 passes through the first limit groove limiting body 111a and the second limit groove body 111b in sequence and is located in the front end plug-in area 110a, so that when the plug 10a inserted between the PCB board and the socket 10b inserted between the PCB board are plugged, the pin 610 of the socket 10b inserted between the PCB board is plugged with the bent spring piece 220, and the plastic cover 120 is installed in the rear end fixing area 110c. The plastic cover 120 and the middle installation area 110b jointly play a role in limiting and fixing the plastic fixing seat 210.

[0057] like Figure 3As shown, in one embodiment, a heat dissipation square hole 115 is provided on the groove wall of the first clamping groove 114. It can be understood that the bent spring piece 220 is partially located in the first plastic base 110, and the bent spring piece 220 generates heat during the signal transmission process, so that the internal temperature of the first plastic base 110 increases. By providing a heat dissipation square hole 115 on the groove wall of each first clamping groove 114, the first clamping groove 114 can be connected with the first clamping boss 211, and the heat dissipation square hole 115 can also dissipate heat inside the first plastic base 110, so that the installation space of the first plastic base 110 is fully utilized, so that the structure of the plug 10a inserted between the PCB boards is more compact.

[0058] like Figure 2 As shown, in one embodiment, the plug 10a for inter-PCB board insertion further includes a pin 400, the plastic cover 120 is provided with a first connection hole 122, the rear end fixing area 110c is provided with a second connection hole, and the pin 400 sequentially passes through the first connection hole 122 and the second connection hole to connect the plastic cover 120 with the rear end fixing area 110c. In this embodiment, the front end of the pin 400 is a cylindrical structure, and the rear end is provided with a barb, the front end is used to pass through the first connection hole 122 on the plastic cover 120 and then riveted to achieve the function of fixing the plastic cover 120, and the rear end barb is used to fix the pin 400 with the rear end fixing area 110c. After the plastic cover 120 is installed, the second clamping groove 121 on the plastic cover 120 cooperates with the second clamping boss 212 of the plastic fixing seat 210 to achieve the multi-directional limit of the bent spring piece 220.

[0059] like Figure 5 and Figure 6As shown, in one embodiment, each of the bent spring pieces 220 includes an elastic contact portion 221, a fixing portion 222, a bending portion 223 and a mounting portion 224 connected in sequence, the elastic contact portion 221 is used to be plugged into the pin 610 of the socket 10b plugged in between the PCB board, the fixing portion 222 is partially located in the first limiting groove limiting body 111a and the second limiting groove body 111b, the bending portion 223 is used to be bent and then covered in the plastic fixing seat 210, so that there is a preset angle between the elastic contact portion 221 and the mounting portion 224, and the mounting portion 224 is connected to the first welding block 230. In this embodiment, the bending portion 223 is bent and then integrally injection molded with the plastic fixing seat 210 through a mold, so that the plastic fixing seat 210 and the bent elastic piece 220 are an integrally molded structure, that is, the plastic fixing seat 210 and the bent elastic piece 220 are a whole, and the elastic contact portion 221, the fixing portion 222 and the mounting portion 224 are all located outside the plastic fixing seat 210. Furthermore, the bending portion 223 is bent 90 degrees so that the extended mounting portion 224 is located in the hollow groove 112, and the first welding block 230 is connected to the mounting portion 224, that is, the first welding block 230 is also located in the hollow groove 112. When the first circuit board 10c is assembled, it is vertically arranged on the plastic fixing seat 210, and part of the first circuit board 10c is located in the hollow groove 112. When the plug 10a is welded to the first circuit board 10c through a high-temperature reflow soldering process, the first welding block 230 melts, so that the mounting portion 224 is welded to the pad on the first circuit board 10c through the first welding block 230, and then the bent spring piece 220 and the wiring on the first circuit board 10c are connected to form an electrical path, thereby realizing the signal transmission function. Furthermore, the bending portion 223 is bent 90 degrees and connected to the first welding block 230, and the first welding block 230 is welded to the first circuit board 10c perpendicular to the plastic fixing seat 210. In this way, after the first circuit board 10c is assembled, the first circuit board 10c and the elastic contact portion 221 are arranged in parallel to adapt to the interconnection of high-speed signals between vertical PCB boards inside a miniaturized chassis or modular components.

[0060] like Figure 5 and Figure 6As shown, in one embodiment, an embedding groove 2241 is provided at the end of the mounting portion 224, and a portion of the first welding block 230 is located in the embedding groove 2241. In this embodiment, the first welding block 230 is a cubic H-shaped tin block, which is formed by die stamping, and has two symmetrical groove structures distributed at both ends. The grooves at both ends are used to cooperate with the embedding groove 2241 of the mounting portion 224, so that the first welding block 230 is embedded in the embedding groove 2241, thereby making the connection between the first welding block 230 and the mounting portion 224 more stable. Furthermore, after the first welding block 230 is assembled with the mounting portion 224, the bent spring piece 220 and the first welding block 230 become a unit for subsequent installation and connection.

[0061] like Figure 2 As shown, in one embodiment, the plug 10a for inter-PCB board insertion further includes a locking assembly 300, the locking assembly 300 includes a nut 310 and a screw connection 320, the first plastic base 110 is provided with an assembly hole, the nut 310 is located in the assembly hole, and the screw connection 320 is used to pass through the first circuit board 10c and the nut 310, so that the first circuit board 10c and the first plastic base 110 are connected. In this embodiment, the nut 310 is pressed into the assembly hole by a tool, and the screw connection 320 passes through the first circuit board 10c and the nut 310, so that the plug 10a for inter-PCB board insertion is fixed on the first circuit board 10c, further improving the stability of the plug 10a for inter-PCB board insertion and the first circuit board 10c.

[0062] like Figure 2 and Figure 7As shown, in one embodiment, the plug also includes a locking screw 900, a connecting hole 116 is opened at the end of the first plastic base 110, and the connecting hole 116 includes a connecting groove body, a limiting hole body and a screw hole body which are sequentially connected along the width direction of the first plastic base 100, and the guide sleeve 800 includes a connected guide body 810 and a limiting body 820, and the guide body 810 passes through the guide groove body so that the limiting body 820 is located in the limiting hole body, and a threaded structure is provided at the end of the limiting body 820 away from the guide body 810, and the locking screw 900 passes through the screw hole body and is screwed with the threaded structure, and a guide channel is opened in the guide body 810, and the guide channel is used to be plugged with the guide column of the socket. In this embodiment, the first plastic base 110 is provided with a guide sleeve 800 in the connection hole 116. The guide sleeve 800 is inserted when the guide column 700 approaches to play a guiding role, thereby making the bending spring piece 220 and the plug pin 610 more accurately inserted. Specifically, the limiting body 820 of the guide sleeve 800 is a square structure, and the limiting hole body is a square hole. After the guide body 810 passes through the guide groove body, the limiting body 820 is located in the limiting hole body, so that the guide sleeve 800 will not rotate relative to the first plastic base 110 when locked, and plays a limiting role. Then the locking screw 900 passes through the screw hole body and is screwed with the threaded structure at the rear end of the limiting body 820 to lock and fix the guide sleeve 800 and the first plastic base 110. When the guide column 700 passes through the guide channel of the guide body 810, it plays a guiding role.

[0063] like Figure 8 and Fig. 9 As shown, the present application also provides a socket 10b for inter-PCB board insertion, the socket 10b for inter-PCB board insertion includes a second plastic base 500, a pin assembly 600 and a guide column 700, the outer peripheral wall of the second plastic base 500 is convexly provided with a support column 550, the support column 550 is used to connect with the second circuit board 10d, specifically, the support column 550 abuts against the second circuit board 10d to play a supporting role, the pin assembly 600 includes a plurality of pins 610 and a plurality of second welding blocks 620, the plurality of pins 610 are all connected to the second plastic base 500 is connected, each of the pins 610 is arranged in parallel with the second plastic base 500, that is, the socket 10b inserted between the PCB boards is a straight socket, the pins 610 and the second welding blocks 620 are arranged in a one-to-one correspondence, one end of the pin 610 is connected to the second welding block 620, and the other end of the pin 610 away from the second welding block 620 is used for plugging with the bent spring piece 220, and each of the second welding blocks 620 is exposed outside the second plastic base 500 so that the second welding block 620 can be welded to the second circuit board 10d.

[0064] like Figure 8 and Fig. 9 As shown, in this embodiment, the shell of the socket 10b for inter-PCB board insertion is the second plastic base 500, that is, the shell of the socket 10b for inter-PCB board insertion is made of plastic material, which further reduces the overall weight and production cost of the connector 10. The middle part of each pin 610 is fixed in the second plastic base 500, the front end of the pin 610 passes through the second plastic base 500 for plugging on the bent elastic piece 220, and the rear end of the pin 610 passes through the second plastic base 500 and is connected to the second welding block 620. The second welding block 620 is a tin block. The second welding block 620 is connected to the second circuit board 10d through a high-temperature reflow soldering process. During the high-temperature process, the second welding block 620 melts, so that the second welding block 620 is fused with the pad on the second circuit board 10d, and then the pin 610 and the wiring on the second circuit board 10d are connected to form an electrical path to achieve the signal transmission function. Further, the pin 610 and the second welding block 620 are located on the same horizontal plane, the second circuit board 10d is vertically arranged on the second plastic base 500 and welded to the second welding block 620, so that the second circuit board 10d is also vertically arranged on the pin 610, and because the bending portion 223 in the plug 10a inserted between the PCB boards is bent 90 degrees and then extends to the outside of the first plastic base 110 and is connected to the first welding block 230, the first welding block 230 is welded to the first circuit board 10c perpendicular to the plastic fixing seat 210, so that the first circuit board 10c is arranged in parallel with the elastic contact portion 221 of the plug 10a inserted between the PCB boards, so that after the first circuit board 10c and the second circuit board 10d are assembled, the first circuit board 10c and the second circuit board 10d are arranged perpendicular to each other at right angles, thereby making the connector 10 suitable for interconnection of high-speed signals between vertical PCB boards in miniaturized chassis or modular components. Further, the guide column is installed on the second plastic base, and the guide column is used to pass through the guide sleeve of the plug. The guide post is used to pass through the guide sleeve when the plug and the socket are close to each other, so as to play a guiding role, so that the plugging of the plug and the socket is more accurate.

[0065] like Figure 8 and Fig. 9As shown, in one embodiment, the second plastic base 500 includes a base body 510 and a plug-in body 520, the plug-in body 520 is connected to a side of the base body 510, the base body 510 is provided with a third snap-in groove 511, the plug-in body 520 is provided with a fourth snap-in groove 521, the third snap-in groove 511 is communicated with the fourth snap-in groove 521, one end of the plug-in pin 610 passes through the third snap-in groove 511 and is located in the fourth snap-in groove 521, so that the plug-in pin 610 is plugged into the bent spring piece 220. In this embodiment, the plug body 520 is a hollow rectangular structure, and the fourth clamping groove 521 is distributed on both sides of the middle of the plug body 520, so that the front end of the pin 610 is located in the fourth clamping groove 521. The plug body 520 is used to be plugged with the front plugging area 110a of the plug 10a plugged between the PCB board. When the plug 10a plugged between the PCB board and the socket 10b plugged between the PCB board are plugged, the bent spring piece 220 abuts against the plug 10a plugged between the PCB board, thereby achieving conduction. Further, a third clamping groove 511 is opened in the middle of the base body 510, and the third clamping groove 511 is connected to the fourth clamping groove 521. Part of the pin 610 is interference-connected in the third clamping groove 511, so that the pin 610 is fixed on the base body 510. Further, the outer edge of the base body is two reinforcing arms, which are mainly used to prevent the second plastic base 500 from deforming in the length direction.

[0066] like Fig. 9 As shown, in one embodiment, both ends of the plug body 520 are further provided with plug guide keys 522, and the front plug area 110a of the first plastic base 110 is provided with a guide groove, and when the plug 10a plugged between the PCB board and the socket 10b plugged between the PCB board are plugged, the plug guide keys 522 are correspondingly penetrated in the guide groove. In this embodiment, the plug guide keys 522 play a guiding role, and when the plug body 520 is plugged with the front plug area 110a of the plug 10a plugged between the PCB board, the plug guide keys 522 are correspondingly penetrated in the guide groove to play a docking guiding role.

[0067] like Fig.10 and Fig.11As shown, in one embodiment, the plug pin 610 includes a plug-in portion 611, a convex clamping portion 612 and a connecting portion 613 connected in sequence, the plug-in portion 611 is located in the fourth clamping groove 521 and is plugged into the bent spring piece 220, the convex clamping portion 612 is interference-locked in the third clamping groove 511, and the connecting portion 613 is located on the outside of the base body 510 and is connected to the second welding block 620. It can be understood that the plug-in portion 611 is located in the fourth snap-in groove 521, so that when the plug 10a inserted between the PCB boards is plugged into the plug pin 610, the plug-in portion 611 is plugged into the bent spring piece 220 to achieve signal transmission, and the convex snap-in portion 612 is interference-engaged in the third snap-in groove 511 to fix the plug pin 610 to the second plastic base 500, and the connecting portion 613 is located outside the second plastic base 500 and connected to the second welding block 620, and the second welding block 620 is welded to the second circuit board 10d perpendicular to the second plastic base 500 to achieve signal transmission.

[0068] like Fig.11 As shown, in one embodiment, a chamfer structure 6111 is provided at one end of the plug-in portion 611 away from the convex clamping portion 612. In this embodiment, the chamfer structure 6111 has an arc surface, so that when the plug-in pin 610 is plugged into the bent spring piece 220, the plug-in pin 610 plugs into the bent spring piece 220 along the arc surface, thereby making the plug-in of the plug-in pin 610 and the bent spring piece 220 more convenient.

[0069] like Fig.11 As shown, in one embodiment, the second welding block 620 includes a welding body 621 and a third clamping boss 622, the connecting portion 613 is provided with a fifth clamping groove 6131, the third clamping boss 622 is located in the fifth clamping groove 6131, so that the second welding block 620 is clamped with the pin 610, and the welding body 621 is used for welding with a circuit board. In this embodiment, the second welding block 620 is in a convex shape and is formed by mold stamping. When the second welding block 620 is assembled with the plug pin 610, the third clamping boss 622 passes through the fifth clamping groove 6131 of the connecting portion 613, so that the welding body 621 is flush with the connecting portion 613, and then the third clamping boss 622 protruding from the connecting portion 613 is vertically extruded by the tooling, so that the third clamping boss 622 extends in all directions, so as to realize the clamping fixation of the second welding block 620 and the connecting portion 613, thereby forming the second welding block 620 and the plug pin 610 into a whole for subsequent installation on the second plastic base 500.

[0070] like Fig.11As shown, in one embodiment, a limiting barb 614 is convexly provided on the side of the junction between the convex clamping portion 612 and the connecting portion 613, and the limiting barb 614 is located outside the third clamping groove 511, so that the plug pin 610 is clamped with the second plastic base 500. In this embodiment, a limiting barb 614 is convexly provided on the side of the junction between the convex clamping portion 612 and the connecting portion 613, so that when the plug pin 610 is inserted into the third clamping groove 511 of the second plastic base 500, the convex clamping portion 612 is interference-engaged in the third clamping groove 511, and the limiting barb 614 is located outside the third clamping groove 511, so as to achieve the limiting fixation of the plug pin 610, thereby making the fixing effect of the plug pin 610 better.

[0071] like Fig. 9 and Fig.12As shown, in one embodiment, the second plastic base 500 is provided with a mounting hole 530, and the inner side surface of the second plastic base 500 is provided with a limiting step 540, and the limiting step 540 is arranged corresponding to the mounting hole 530. The guide column 700 includes a guide column body 710, a limiting boss 720 and a mounting seat 730. The guide column body 710 is fixedly connected with the mounting seat 730, and the limiting boss 720 is sleeved at the junction where the guide column body 710 and the mounting seat 730 are connected. The mounting seat 730 is located in the mounting hole 530, and the limiting boss 820 is clamped with the limiting step 540. The guide column body 710 is used to pass through the guide sleeve 800 of the plug. . In this embodiment, a mounting hole 530 is provided at the end of the second plastic base 500, and a limiting step 540 is further provided on the inner side surface of the second plastic base 500. The limiting step 540 is correspondingly arranged at the mounting hole 530. The guide column 700 includes a guide column body 710, a limiting boss 720 and a mounting seat 730. The guide column body 710 is fixedly connected to the mounting seat 730. The limiting boss 720 is sleeved at the junction where the guide column body 710 and the mounting seat 730 are connected. When the guide column 700 is assembled, the mounting seat 730 passes through the mounting hole 530, and the limiting boss 720 is located in the limiting step 540, so that the guide column 700 is clamped and fixed to the second plastic base 500, and at the same time, the guide column 700 is prevented from rotating during the locking process. The guide column body 710 passes through the guide hole 116 of the first plastic base 110, so that the pin 610 is correspondingly plugged into the bent spring piece 220 to play a guiding role. Furthermore, the mounting seat 730 is provided with a protruding clamping rib 731 around it, so that when the mounting seat 730 enters the mounting hole 530, the clamping rib 731 is located in a slot communicating with the mounting hole 530, thereby making the connection between the mounting seat 730 and the second plastic base 500 more stable. Furthermore, the bottom of the mounting seat 730 is provided with a screw hole 732, and the screw hole 732 is used for screws to pass through. When the mounting seat 730 and the second plastic base 500 are assembled, the screws pass through the second circuit board 10d and the mounting seat 730, so that the second circuit board 10d and the second plastic base 500 are fixed.

[0072] like Fig.12As shown, in one embodiment, the guide column body 710 is a cylindrical structure, and a guide bevel 711 is provided at one end of the guide column body 710 away from the limiting step 540, and an alignment plane 712 is provided on the side of the guide column body 710. In this embodiment, the wire bevel at the end of the guide column body 710 is used to enter along the inclined surface of the guide bevel 711 when entering the guide hole 116, so that the guide column body 710 is more convenient to insert into the guide hole 116, and the guide hole 116 is in the shape of a special-shaped hole, and part of the guide hole 116 is a plane. Accordingly, when the guide column body 710 enters the guide hole 116, the alignment plane 712 is used to identify the direction, so that the guide column body 710 can be plugged more accurately.

[0073] like Fig.13 and Fig.14 As shown, the present application also provides a connector 10, including a plug 10a for inter-PCB board insertion as described in any of the above embodiments and a socket 10b for inter-PCB board insertion as described in any of the above embodiments, wherein the plug 10a for inter-PCB board insertion is connected to the socket 10b for inter-PCB board insertion, the plug 10a for inter-PCB board insertion is used to connect to a first circuit board 10c, and the socket 10b for inter-PCB board insertion is used to connect to a second circuit board 10d. In this embodiment, the first circuit board 10c and the second circuit board 10d are arranged perpendicular to each other, the plug and the first circuit board 10c are installed at right angles and fixed by SMT welding, after installation, the plug end of the plug is parallel to the first circuit board 10c, the socket and the second circuit board 10d are installed vertically and fixed by SMT welding, after installation, the plug end of the socket is vertically distributed with the second circuit board 10d, which is better adapted to the reliable interconnection of high-speed signals between PCB boards inside a miniaturized chassis or functional module.

[0074] Compared with the prior art, the present invention has at least the following advantages:

[0075] 1. In the above-mentioned plug 10a for inter-PCB board insertion, the bent spring piece 220 is partially installed in the plastic fixing seat 210, and the plastic fixing seat 210 is respectively connected to the first plastic base 110 and the plastic cover 120. One end of the bent spring piece 220 passes through the limiting groove 111, so that the limiting groove 111 limits and fixes the bent spring piece 220. The other end of the bent spring piece 220 is connected to the first welding block 230, and the first welding block 230 is located in the hollow groove 112 and welded to the circuit board to further fix the bent spring piece 220 and transmit signals. In this way, by limiting and fixing the bent spring piece 220 at multiple locations, the connection stability between the bent spring piece 220 and the pin 610 of the socket 10b for inter-PCB board insertion is higher, which is more conducive to signal transmission.

[0076] 2. The housing of the plug 10a inserted between the PCB boards is made of plastic material, which effectively reduces the weight of the overall structure and the production cost compared to the traditional metal housing.

[0077] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the attached claims.

Claims

1. A plug for inter-PCB board insertion, characterized in that: include: A plastic shell, the plastic shell comprising a first plastic base and a plastic cover, the plastic cover is mounted on the end of the first plastic base, the first plastic base is provided with a plurality of limit grooves, one side of the first plastic base is provided with a hollow groove, and the outer peripheral wall of the first plastic base is convexly provided with a welding column, the welding column is used for welding with the first circuit board; A guide sleeve, the guide sleeve is installed on the first plastic base, and the guide sleeve is used for the guide column of the socket to pass through; A spring element assembly, the spring element assembly includes a plastic fixing seat, a plurality of bent spring elements and a plurality of first welding blocks, the plastic fixing seat is respectively connected to the first plastic base and the plastic cover plate, the bent spring elements and the first welding blocks are arranged in a one-to-one correspondence, a partial structure of each of the bent spring elements is located in the plastic fixing seat and connected to the plastic fixing seat, one end of the bent spring element extends to the outside of the plastic fixing seat and passes through the limiting groove accordingly, so that the bent spring element is plugged into the pin of the socket, the other end of the bent spring element is bent and extends to the outside of the plastic fixing seat and is connected to the corresponding first welding block, the first welding block is located in the hollow groove, and the first welding block is used to be welded to the pad of the first circuit board.

2. The plug for inter-PCB board connection according to claim 1, characterized in that: The plastic fixing seat is respectively clamped with the first plastic base and the plastic cover.

3. The plug for inter-PCB board connection according to claim 2, characterized in that: A first clamping groove is formed on the bottom wall of the first plastic base, a second clamping groove is formed on a side of the plastic cover plate adjacent to the first plastic base, the plastic fixing seat has a first side surface and a second side surface perpendicular to each other, a first clamping boss is convexly formed on the first side surface, the first clamping boss is located in the first clamping groove, a second clamping boss is convexly formed on the second side surface, and the second clamping boss is located in the second clamping groove, so that the plastic fixing seat is clamped with the first plastic base and the plastic cover plate respectively; and / or, The first plastic base includes a front end plug-in area, a middle installation area and a rear end fixing area connected in sequence, the plastic cover is installed in the rear end fixing area, and the middle installation area is provided with a mounting end surface at one end adjacent to the front end plug-in area. Each of the limit grooves includes a first limit groove body and a second limit groove body that are connected to each other. The first limit groove body is opened in the front end plug-in area, the second limit groove body is opened in the mounting end surface, and the hollow groove is opened on one side of the middle installation area.

4. The plug for inter-PCB board connection according to claim 3, characterized in that: Each of the bent spring pieces comprises an elastic contact portion, a fixing portion, a bending portion and a mounting portion connected in sequence, the elastic contact portion is used to be plugged with a pin of the socket, the fixing portion is partially located in the first limiting groove body and the second limiting groove body, the bending portion is used to be bent and then covered in the plastic fixing seat, so that a preset angle exists between the elastic contact portion and the mounting portion, and the mounting portion is connected to the first welding block; and / or, An embedding groove is formed at the end of the mounting portion, and the first welding block is partially located in the embedding groove.

5. The plug for inter-PCB board connection according to claim 1, characterized in that: The plug also includes a locking screw. A connecting hole is provided at the end of the first plastic base. The connecting hole includes a connecting groove body, a limiting hole body and a screw hole body that are sequentially connected along the width direction of the first plastic base. The guide sleeve includes a connected guide body and a limiting body. The guide body passes through the guide groove body so that the limiting body is located in the limiting hole body. A threaded structure is provided at the end of the limiting body away from the guide body. The locking screw passes through the screw hole body and is screwed to the threaded structure. A guide channel is provided in the guide body, and the guide channel is used to be plugged into the guide column of the socket.

6. A socket for inter-PCB board connection, characterized in that: It comprises a second plastic base, a pin assembly and a guide column, the outer peripheral wall of the second plastic base is convexly provided with a support column, the support column is used to connect with the second circuit board, the pin assembly comprises a plurality of pins and a plurality of second welding blocks, the plurality of pins are connected with the second plastic base, each of the pins is arranged in parallel with the second plastic base, the pins and the second welding blocks are arranged one by one, one end of the pin is connected with the second welding block, the other end of the pin away from the second welding block is used to be plugged with the bent spring piece, each of the second welding blocks is exposed outside the second plastic base, so that the second welding block is welded with the pad of the second circuit board; The guide column is installed on the second plastic base, and the guide column is used to pass through the guide sleeve of the plug.

7. The socket for inter-PCB board connection according to claim 6, characterized in that: The second plastic base includes a base body and a plug-in body, the plug-in body is connected to a side surface of the base body, the base body is provided with a third clamping groove, the plug-in body is provided with a fourth clamping groove, the third clamping groove is communicated with the fourth clamping groove, one end of the plug-in pin passes through the third clamping groove and is located in the fourth clamping groove, so that the plug-in pin is plugged with the bent elastic piece; and / or, The plug pin includes a plug-in portion, a convex clamping portion and a connecting portion connected in sequence, the plug-in portion is located in the fourth clamping groove and plugged with the bent spring piece, the convex clamping portion is interference clamped in the third clamping groove, and the connecting portion is located on the outside of the base body and connected to the second welding block.

8. The socket for inter-PCB board connection according to claim 7, characterized in that: The second welding block comprises a welding body and a clamping boss, the connecting portion is provided with a fifth clamping groove, the clamping boss is located in the fifth clamping groove, so that the second welding block is clamped with the pin, and the welding body is used for welding with the circuit board; and / or, A limiting hook is convexly provided on the side surface of the junction between the convex clamping portion and the connecting portion, and the limiting hook is located outside the third clamping groove to enable the insertion pin to be clamped with the second plastic base.

9. The socket for inter-PCB board connection according to claim 7, characterized in that: The second plastic base is provided with a mounting hole, the inner side surface of the second plastic base is provided with a limiting step, the limiting step is arranged corresponding to the mounting hole, the guide column comprises a guide column body, a limiting boss and a mounting seat, the guide column body is fixedly connected to the mounting seat, the limiting boss is sleeved at the junction where the guide column body and the mounting seat are connected, the mounting seat is located in the mounting hole, the limiting boss is clamped with the limiting step, and the guide column body is used to pass through the guide sleeve of the plug; and / or, A guiding bevel is arranged at one end of the guide column body away from the limiting step, and an alignment plane is arranged on the side surface of the guide column body.

10. A connector, characterized in that: It comprises a plug for inter-PCB board insertion according to any one of claims 1 to 5 and a socket for inter-PCB board insertion according to any one of claims 6 to 9, wherein the plug for inter-PCB board insertion is connected to the socket for inter-PCB board insertion, the plug for inter-PCB board insertion is used to connect to a first circuit board, and the socket for inter-PCB board insertion is used to connect to a second circuit board.

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