Connector-based multi-board stack connection structure

Abstract

The application discloses a connector-based multi-board stacking connection structure, comprising: a printed board, which is provided with positioning holes and welding holes; a socket, which is installed on one side of the printed board and is provided with socket welding columns and socket positioning columns on the side connected with the printed board; and a plug, which is installed on the other side of the printed board and is provided with plug welding columns and plug positioning columns on the side connected with the printed board; when the socket and the plug on the two sides of the same printed board are connected, the positioning holes on the printed board simultaneously accommodate the socket positioning columns and the plug positioning columns which penetrate from the two sides, and the welding holes accommodate the socket welding columns or the plug welding columns which penetrate from one side; and a plurality of printed boards are coaxially stacked through the plug and the socket. The positioning holes shared by the two sides of the printed board are arranged, the socket and the plug installed on the same printed board are uniformly positioned, the socket and the plug are kept coaxial in the stacking direction of the printed board, and the mispositioning of the printed board stacking caused by the surface mounting of the socket and the plug is avoided.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and particularly relates to a multi-board stacked connection structure based on connectors. Background Technology

[0002] As military equipment becomes increasingly functional and performs better, the integration density and number of contacts of its components are also constantly increasing. However, this increase in components and contacts leads to more complex equipment structures, larger sizes, and greater weight, making it difficult to meet the development requirements of equipment integration, lightweighting, and miniaturization.

[0003] In recent years, some equipment manufacturers have achieved equipment miniaturization by using a multi-board parallel stacking connection method to make the internal structure of the equipment more compact, reduce the size and space occupation of the equipment. For example, Chinese patent application No. 201810321040.4 describes a connector for stacked PCBs, in which the male and female connectors are inserted to form a complete connector, and the two PCBs are physically connected and electrical signals are transmitted through the connector.

[0004] However, in practical applications, although this type of connector for stacked PCBs can meet the stacked connection of two PCBs, in some special application scenarios, it is not only used to realize the stacked connection of two or three PCBs, but also to set the two sides of the PCB to stack and connect seven or more PCBs and install them in the corresponding housing or cavity.

[0005] In the aforementioned application environment, since the connectors on both sides of the PCB need to be installed and fixed separately, multiple PCBs of the same size stacked through the connectors may not be completely aligned in the vertical connection direction. In particular, the misalignment between the top and bottom layers will be very significant. Once the PCBs stacked through the connectors are misaligned, on the one hand, it will be inconvenient to install them in the pre-designed limited space. On the other hand, the pre-drilled fixing holes on the misaligned PCBs will not be aligned with the pre-drilled holes in the housing or cavity, thus making it impossible to fix the PCBs. Summary of the Invention

[0006] To address the problems of existing technical requirements, this invention proposes the following technical solution: A multi-board stacking connection structure based on connectors includes: A printed circuit board having positioning holes and soldering holes; A socket is mounted on one side of a printed circuit board, and the side of the socket connected to the printed circuit board has a socket welding post and a socket positioning post; A plug is installed on the other side of the printed circuit board, and the side of the plug that connects to the printed circuit board has plug soldering posts and plug positioning posts; When a socket and a plug are connected to both sides of the same printed circuit board, the positioning holes on the printed circuit board simultaneously accommodate socket positioning posts and plug positioning posts that extend from both sides, and the soldering holes accommodate socket soldering posts or plug soldering posts that extend from one side; multiple printed circuit boards are coaxially stacked by plug and socket connection.

[0007] Preferably, at least two socket positioning posts and at least two plug positioning posts are provided.

[0008] Preferably, there are two socket positioning posts, and the two socket positioning posts are located at both ends of the socket length direction; there are two plug positioning posts, and the two plug positioning posts are located at both ends of the plug length direction.

[0009] Preferably, the socket positioning post includes a circular positioning post and an irregularly shaped positioning post, and the plug positioning post includes a circular positioning post and an irregularly shaped positioning post.

[0010] Preferably, the socket has two socket welding posts, which are located diagonally opposite each other; the plug has two plug welding posts, which are located diagonally opposite each other; and the printed circuit board has four welding holes, which are used to accommodate two plug welding posts and two socket welding posts when the socket and plug are connected on both sides of the same printed circuit board.

[0011] Preferably, the socket has a socket welding post and a first clearance area in the width direction, and the plug has a plug welding post and a second clearance area in the width direction; when the socket and the plug are connected to both sides of the same printed circuit board, the first clearance area exposes the plug welding post, and the second clearance area exposes the socket welding post.

[0012] Preferably, the printed circuit board has pads on the surface where it connects to the socket and / or plug, and the socket and / or plug has a connector inside. When the socket and / or plug are connected to both sides of the same printed circuit board, the connector is surface-mount soldered to the pads for conductivity.

[0013] The beneficial effects of this invention are as follows: by setting up positioning holes shared on both sides of the printed circuit board, the sockets and plugs that are fixed on the front and back sides of the same printed circuit board are positioned in a consistent manner, so that the sockets and plugs are kept coaxial in the stacking direction of the printed circuit board, avoiding the problem of misalignment of the printed circuit board due to the mounting of the sockets and plugs, and the problem that the misalignment of the printed circuit board stacking further leads to the inconvenience of installation in the pre-designed limited space and the inability of the pre-reserved fixing holes on the printed circuit board to align with the pre-reserved holes in the housing or cavity. Attached Figure Description

[0014] Figure 1 The diagram shows the mating structure between the connector and the PCB board. Figure 2 What is shown is Figure 1 A magnified view of a section at point A in the middle; Figure 3 The diagram shows the overall structure where the socket and plug are installed on both sides of the same printed circuit board. Figure 4 The diagram shows a schematic of the structure where the socket and plug are installed at the solder holes on both sides of the same printed circuit board. Figure 5 The diagram shows a structural schematic of a socket and plug being installed simultaneously on the front and back of the same printed circuit board at the positioning holes. Figure 6 The diagram shown is a structural schematic of the socket; Figure 7 The diagram shown is a structural schematic of the socket housing 15; Figure 8 The diagram shown is a structural schematic of plug 2; Figure 9 The diagram shown is a structural schematic of the plug housing 25; Figure 10 The diagram shows a stacked configuration of several printed circuit boards 3 connected to a socket 1 and a plug 2. Icon descriptions: 1. Socket; 11. Socket positioning post; 12. Socket welding post; 13. Socket connector; 14. First clearance zone; 15. Socket housing; 16. Socket base; 17. First mounting hole; 2. Plug; 21. Plug positioning post; 22. Plug soldering post; 23. Plug connector; 24. Second clearance area; 25. Plug housing; 26. Plug base; 27. Second mounting hole; 3. Printed circuit board; 31. Positioning hole; 32. Soldering hole; 33. Solder pad. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Figure 1 The diagram shows the mating structure of the connector and the PCB board. The diagram includes a socket 1, a plug 2, and a printed circuit board (PCB board) 3. The socket 1 and the plug 2 are fixedly mounted on opposite sides of the printed circuit board 3.

[0017] Figure 2 for Figure 1 See the enlarged view of a section at point A in the middle. Figure 2The printed circuit board 3 is provided with positioning holes 31 and soldering holes 32. The connection surface between the socket 1 and the printed circuit board 3 is provided with protruding socket soldering posts 12. The number of socket soldering posts 12 is usually not one, but can be two, three or more, depending on the design requirements. In this embodiment, the socket soldering posts 12 are set as a pair (two). There are also two corresponding soldering holes 32 that cooperate with the socket soldering posts 12. When the socket 1 is connected to the printed circuit board 3, the socket soldering posts 12 penetrate into the soldering holes 32, and the socket 1 is soldered and fixed to the printed circuit board 3 by welding.

[0018] Additionally, see Figure 2 On the connection surface between the socket 1 and the printed circuit board 3, a protruding socket positioning post 11 is provided. The positioning hole 31 on the printed circuit board 3 mates with the socket positioning post 11. When the socket 1 is connected to the printed circuit board 3, the socket positioning post 11 is inserted into the positioning hole 31 for mating. Unlike the mating of the socket soldering post 12 and the soldering hole 32, the mating dimensions of the socket positioning post 11 and the positioning hole 31 are more precise. The mating tolerance meets the requirements of electrical connection and conduction after the socket 1 and the printed circuit board 3 are connected. The socket soldering post 12 and the soldering hole 32 are used to solder and fix the socket 1 to the printed circuit board 3. In order to improve the soldering firmness, the mating gap between the socket soldering post 12 and the soldering hole 32 is relatively large to accommodate the solder to cover the socket soldering post 12.

[0019] Figure 2 In the circuit, the connector 2 and the printed circuit board 3 are provided with protruding connector soldering posts 22. The number of connector soldering posts 22 is usually not one, but two, three or more, depending on the design requirements. In this embodiment, the connector soldering posts 22 are set as a pair (two). There are also two corresponding soldering holes 32 that cooperate with the connector soldering posts 22. When the connector 2 is connected to the printed circuit board 3, the connector soldering posts 22 are inserted into the soldering holes 32, and the connector 2 is soldered and fixed to the printed circuit board 3 by welding.

[0020] See also Figure 2 On the connection surface between the plug 2 and the printed circuit board 3, a protruding plug positioning post 21 is provided. The printed circuit board 3 has a positioning hole 31 that mates with the plug positioning post 21. When the socket 1 is connected to the printed circuit board 3, the plug positioning post 21 is inserted into the positioning hole 31 for mating. Unlike the mating of the plug soldering post 22 and the soldering hole 32, the mating dimensions of the plug positioning post 21 and the positioning hole 31 are more precise. The mating tolerance meets the requirements for electrical connection and conduction after the plug 2 and the printed circuit board 3 are connected. The plug soldering post 22 and the soldering hole 32 are used to solder and fix the plug 2 to the printed circuit board 3. In order to improve the soldering firmness, the mating gap between the plug soldering post 22 and the soldering hole 32 is relatively large to accommodate the solder covering the plug soldering post 22.

[0021] Figure 2In the circuit board 3, pads 33 are provided on both sides. A socket connector 13 is provided on the connection surface between the socket 1 and the printed circuit board 3. The socket 1 and the printed circuit board 3 are fixed and electrically connected after contact and soldering with the pads 33 through the socket connector 13. A plug connector 23 is provided on the connection surface between the plug 2 and the printed circuit board 3. The plug 2 and the printed circuit board 3 are fixed and electrically connected after contact and soldering with the pads 33 through the plug connector 23.

[0022] Figures 3-5 The diagram shows a structure in which socket 1 and plug 2 are installed on both sides of the same printed circuit board 3. Figure 3 This is a schematic diagram of the overall state. Figure 4 This is a structural diagram of weld hole 32. Figure 5 This is a schematic diagram of the structure at positioning hole 31.

[0023] Combination Figures 1-5 The positioning hole 31 on the printed circuit board 3 is shared on both sides. That is, the socket positioning post 11 on the socket 1 and the plug positioning post 21 on the plug 2 are inserted into the same positioning hole 31. The socket 1 and plug 2, which are installed and fixed on the front and back of the same printed circuit board 3, are positioned in a consistent manner through the same positioning hole 31, so that the socket 1 and plug 2 are kept coaxial in the stacking direction of the printed circuit board 3. Multiple printed circuit boards 3 connected by socket 1 and plug 2 can avoid misalignment caused by the mounting of socket 1 and plug 2 after stacking. This avoids the problem that the stacked PCB board is not easy to install in the pre-designed limited space, and the problem that the reserved fixing holes on the misaligned PCB board cannot be aligned with the reserved holes in the shell or cavity, which would result in the PCB board not being able to be fixed. This addresses a specific issue; simultaneously, the coaxiality of socket 1 and plug 2 in the stacking direction of printed circuit board 3 ensures that when two printed circuit boards 3 are connected via socket 1 and plug 2, the force applied to socket 1 or plug 2 is always concentrated on socket 1 or plug 2, preventing the force from being distributed on the misaligned portion of printed circuit board 3 due to misalignment. This avoids damage to printed circuit board 3 caused by external forces, especially when multiple printed circuit boards 3 are stacked. The misalignment between socket 1 or plug 2 on the topmost printed circuit board 3 and socket 1 or plug 2 on the bottommost printed circuit board 3 becomes more pronounced. The force applied to socket 1 or plug 2 on the topmost printed circuit board 3 may be suspended on the bottommost printed circuit board 3 (i.e., no socket 1 or plug 2 below), which could easily damage the printed circuit board 3.

[0024] Combination Figures 1-3The socket 1 has two socket welding posts 12, which are located diagonally opposite to the socket 1. The plug 2 also has two plug welding posts 22, which are also located diagonally opposite to the plug 2. When the socket 1 and plug 2 are placed in the same position (the connection surface of the socket 1 and the printed circuit board 3 is facing down, and the connection surface of the plug 2 and the printed circuit board 3 is also facing down), the diagonal setting of the socket welding posts 12 on the socket 1 and the plug welding posts 22 on the plug 2 is consistent, and their positional relationship is also consistent. The corresponding soldering holes 32 on the printed circuit board 3 are set to four. When the socket 1 and plug 2 are installed on the two sides of the printed circuit board 3 respectively (the plug 2 is installed at the bottom), after the plug 2 is flipped over, the setting of the plug welding posts 22 on the plug 2 is exactly the opposite of the socket welding posts 12 on the socket 1. That is, the two socket welding posts 12 on the socket 1 and the two plug welding posts 22 on the plug 2 are inserted into the four soldering holes 32.

[0025] Typically, the socket 1 and plug 2 of a connector are modular in design. Therefore, the housings of the socket 1 and plug 2 can be customized. That is, the housings of the socket 1 and plug 2 are designed with the same specifications according to the design requirements of the printed circuit boards 3 to be stacked. The reserved soldering holes 32 are designed on all printed circuit boards 3. Then, the required signal channels are designed according to the functional requirements of different printed circuit boards 3. This modular design can ensure a simplified positioning and connection structure between the socket 1, plug 2 and printed circuit board 3. At the same time, it can also achieve coaxiality after the socket 1 and plug 2 on both sides of the same printed circuit board 3 are installed, thereby avoiding the misalignment problem after multiple printed circuit boards 3 are stacked.

[0026] See Figures 3-5 Since the socket welding posts 12 on the socket 1 are located diagonally, and the socket welding posts 12 are offset on one side, the socket welding posts 12 and the first clearance area 14 are provided on the width of the socket 1. The socket welding posts 12 are solid structures, and the first clearance area 14 is a recessed structure relative to the socket welding posts 12. This allows the first clearance area 14 to correspond with the welding holes 32 of the unwelded socket welding posts 12 after the socket 1 is installed on the printed circuit board 3, exposing the welding holes 32. In this way, when the plug 2 is installed on the printed circuit board 3, the first clearance area 14 can easily weld the plug welding posts 22 to the welding holes 32. Similarly, the plug welding posts 22 and the second clearance area 24 are provided on the width of the plug 2. This allows the second clearance area 24 to easily weld the socket welding posts 12 to the welding holes 32 when the socket 1 is installed on the printed circuit board 3.

[0027] Figure 6 The diagram shown is a structural schematic of socket 1. Figure 5The diagram shows the structure of the socket housing 15. The socket 1 has a modular design and includes a socket housing 15, a socket base 16, a socket positioning post 11, a socket welding post 12, and a socket connector 13. The socket connector is inserted into the hole of the socket base 16, and then the socket connector 13 and the socket base 16 are embedded in the socket housing 15 and potted for fixation. The socket housing 15 has a first mounting hole 17, and the socket welding post 12 is fixed in the first mounting hole 17.

[0028] Typically, the socket soldering post 12 and the first mounting hole 17 are connected and fixed by means other than threaded assembly; while the socket connector 13 will be set with different arrangement and number according to the requirements of the electrical connection to be achieved, so as to obtain sockets 1 with different core numbers. The corresponding solder pads 33 on the printed circuit board 3 will also be set to be consistent with the socket connector 13.

[0029] See Figure 7 There are two socket positioning posts 11 on the connection surface between the socket 1 and the printed circuit board 3. The two socket positioning posts 11 are located at both ends of the length direction of the socket 1, and the two socket positioning posts 11 have different shapes. The positioning holes 31 on the printed circuit board 3 correspond to the shape and size of the socket positioning posts 11. One of the socket positioning posts 11 is a cylindrical positioning post, and the other socket positioning post 11 is an irregularly shaped positioning post, including rhombus, triangle, hexagon and other irregular shapes. The purpose of designing two socket positioning posts 11 with different shapes is to achieve the purpose of preventing reverse installation when the socket 1 is connected to the printed circuit board 3. Since the two socket positioning posts 11 have different shapes, the cylindrical positioning post cannot be inserted into the irregularly shaped positioning hole 31, thus playing the role of preventing reverse installation.

[0030] Figure 8 The diagram shown is a structural schematic of plug 2. Figure 9 The diagram shows the structure of the plug housing 25. The plug 2 has a modular design and includes a plug housing 25, a plug base 26, a plug positioning post 21, a plug welding post 22, and a plug connector 23. The plug connector 23 is inserted into the hole of the plug base 26. Then, the plug connector 23 and the plug base 26 are embedded in the plug housing 25 and potted and fixed. The plug housing 25 has a second mounting hole 27, and the plug welding post 22 is fixed in the second mounting hole 27.

[0031] Typically, the plug soldering post 22 and the second mounting hole 27 are connected and fixed by means other than threaded assembly; while the plug connector 23 will be set with different arrangement and number according to the requirements of the electrical connection to be achieved, so as to obtain plugs 2 with different core numbers, and the corresponding solder pads 33 on the printed circuit board 3 will also be set to be consistent with the plug connector 23.

[0032] See Figure 9There are two plug positioning posts 21 on the connection surface between the plug 2 and the printed circuit board 3. The two plug positioning posts 21 are located at both ends of the length direction of the plug 2, and the two plug positioning posts 21 have different shapes. The positioning holes 31 on the printed circuit board 3 correspond to the shape and size of the plug positioning posts 21. One plug positioning post 21 is a cylindrical positioning post, and the other plug positioning post 21 is an irregularly shaped positioning post, including rhombus, triangle, hexagon and other irregular shapes. The purpose of designing two plug positioning posts 21 with different shapes is to achieve the purpose of preventing reverse installation when the plug 2 is connected to the printed circuit board 3. Since the two plug positioning posts 21 have different shapes, the cylindrical positioning post cannot be inserted into the irregularly shaped positioning hole 31, thus playing the role of preventing reverse installation.

[0033] Figure 10 The diagram shows a stacked configuration of several printed circuit boards 3 connected to a socket 1 and a plug 2.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A multi-board stacked connection structure based on connectors, characterized in that, include: A printed circuit board having positioning holes and soldering holes; A socket is mounted on one side of a printed circuit board, and the side of the socket connected to the printed circuit board has a socket welding post and a socket positioning post; A plug is installed on the other side of the printed circuit board, and the side of the plug that connects to the printed circuit board has plug soldering posts and plug positioning posts; When a socket and a plug are connected to both sides of the same printed circuit board, the positioning holes on the printed circuit board simultaneously accommodate socket positioning posts and plug positioning posts that extend from both sides, and the soldering holes accommodate socket soldering posts or plug soldering posts that extend from one side; multiple printed circuit boards are coaxially stacked by plug and socket connection. The socket has two socket welding posts, which are located diagonally opposite each other. The plug has two plug welding posts, which are located diagonally opposite each other. The printed circuit board has four welding holes. When the socket and plug are connected on both sides of the same printed circuit board, the four welding holes are used to accommodate the two plug welding posts and the two socket welding posts. The socket has a socket welding post and a first clearance area in the width direction, and the plug has a plug welding post and a second clearance area in the width direction; When a socket and a plug are connected to both sides of the same printed circuit board, the first clearance area exposes the plug soldering post, and the second clearance area exposes the socket soldering post.

2. The connector-based multi-board stacking connection structure according to claim 1, characterized in that, The socket positioning post is provided with at least two, and the plug positioning post is provided with at least two.

3. The connector-based multi-board stacking connection structure according to claim 2, characterized in that, The socket positioning posts are provided in two positions, and the two socket positioning posts are located at both ends of the socket length direction; the plug positioning posts are provided in two positions, and the two plug positioning posts are located at both ends of the plug length direction.

4. The connector-based multi-board stacking connection structure according to claim 3, characterized in that, The socket positioning post includes a circular positioning post and an irregularly shaped positioning post, and the plug positioning post includes a circular positioning post and an irregularly shaped positioning post.

5. The connector-based multi-board stacking connection structure according to any one of claims 1 to 4, characterized in that, The printed circuit board has pads on the surface where it connects to the socket and / or plug. The socket and / or plug has a connector inside. When the socket and / or plug are connected to both sides of the same printed circuit board, the connector is surface-mounted and soldered to the pads for conductivity.

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