Printed circuit board connection structure
By using metal conductive structural parts to electrically and mechanically fix the main PCB board and the module PCB board in the printed circuit board connection structure, the problem of difficulty in taking into account both high current electrical connection and mechanical fixation in the prior art is solved, and the large-scale production and model management of the main PCB board are achieved.
Patent Information
- Application Number
- CN202422002266.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-19
AI Technical Summary
When the prior art realizes the electrical connection between the main PCB board and the daughter board module, it is difficult to take into account the electrical connection and mechanical fixation of the large current. Due to the changes in the specifications of the module PCB board, the main PCB board model is complex, the management cost is high, and the crimp connector is large in size and has weak vibration resistance.
The metal conductive structural member is electrically connected to the module PCB board through its first connecting surface, electrically connected to the main PCB board through its second connecting surface, and fixedly connected to the screw holes of the module PCB board and the main PCB board through screws to realize electrical connection and mechanical fixation.
It realizes efficient electrical connection and mechanical fixation between the main PCB board and the module PCB board, reduces cost and volume, simplifies the model management of the main PCB board, improves the production scale effect, and reduces the board area of the module PCB board on the main PCB board.
Smart Images
Figure CN222981750U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of printed circuit boards, and in particular relates to a printed circuit board connection structure. Background Art
[0002] In order to reduce the board area and make full use of the space on the PCB board, some functional circuits are usually modularized by using sub-boards to improve the reuse rate of mature circuits and reduce design and production costs. Sub-board modules may have different specifications due to different needs. It is feasible to achieve different parameters through the same interface in production. Therefore, although there are different needs, the specifications of the main PCB board can still be consistent, and its output can be accumulated to achieve cost reduction brought by large-scale production. Usually, the electrical connection between the sub-board module and the main PCB board is achieved through a connector, and the electrical connection is achieved by welding or crimping. For the welding method, it is generally completed at one time during the production process, but if the sub-board module needs to be installed due to different specifications, it is necessary to use the method of repair welding, especially when manual welding is necessary, which will greatly increase the market cost; if different main PCB board models are used to adapt to the selection of sub-board module specifications, although the cost increase caused by secondary welding of sub-board modules can be avoided, a large number of main PCB boards with similar specifications and models will lead to increased management costs and reduced economies of scale. In this regard, although the crimping method can avoid the secondary welding problem caused by the welding method, the connector used for crimping is large in size, especially when the current flowing through is large, the volume is a big problem; on the other hand, the crimping connector must consider the impact of vibration, and the anti-vibration ability of the contact crimping connector is relatively weak, and generally requires additional screws to meet the vibration detection requirements of the product. Therefore, it is necessary to design a new printed circuit board connection structure to better improve the scale effect of the main PCB board production. Utility Model Content
[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a printed circuit board connection structure that takes into account both high-current electrical connection and mechanical fixation and is conducive to large-scale production of main PCB boards.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] The utility model provides a printed circuit board connection structure, comprising a main PCB board, at least one module PCB board and a plurality of conductive structural members respectively connected to the main PCB board and the module PCB board, any of the conductive structural members comprising a first connection surface and a second connection surface, the conductive structural member being electrically connected to the module PCB board via the first connection surface and being electrically connected to the main PCB board via the second connection surface.
[0006] In one embodiment, the component side of the module PCB board is perpendicular to the component side of the main PCB board, and the first connection surface and the second connection surface of the conductive structure are perpendicular to each other.
[0007] In one embodiment, the conductive structure is located on the side of the module PCB board where the components have a higher height.
[0008] In one embodiment, the conductive structure is a rectangular parallelepiped metal part, and the length extension direction of the conductive structure is the height extension direction or the length extension direction of the module PCB board.
[0009] In one embodiment, the conductive structure is connected to the module PCB board by welding or detachably, and the conductive structure is detachably connected to the main PCB board.
[0010] In one embodiment, a first screw hole and a second screw hole that do not interfere with each other are provided on any one of the conductive structures, and a plurality of screw holes are respectively provided on the module PCB board and the main PCB board corresponding to the plurality of conductive structures. The conductive structure is fixedly connected to the module PCB board through a screw and the first screw hole, and at the same time, is fixedly connected to the main PCB board through a screw and the second screw hole.
[0011] In one embodiment, a positioning pin protrudes from the first connection surface of the conductive structure, and a positioning hole is recessed on the module PCB board opposite to the positioning pin.
[0012] In one embodiment, two of the positioning pins protrude from the first connection surface of the conductive structure.
[0013] In one embodiment, an insulating positioning member is further included. The insulating positioning member includes a positioning surface parallel to the component side of the module PCB board and a plurality of insertion through holes opened in a direction perpendicular to the positioning surface. A limiting pin protrudes from the positioning surface, and a limiting hole is recessed on the module PCB board opposite to the limiting pin. The conductive structures are inserted into the insertion through holes one by one and keep the first connection surface electrically connected to the module PCB board.
[0014] In one embodiment, the screw is a conductive screw, and the nut of the screw and the conductive structure are on different sides of the circuit board.
[0015] Compared with the prior art, the beneficial effect of the utility model is that the electrical connection and fixed installation of the main PCB board and the module PCB board are realized by using the metal conductive structural parts. The conductive structural parts can not only complete the large-current electrical connection, but also take into account the mechanical fixation. A single pin can pass a larger current, ensuring the electrical connection without the need for additional mechanical fixing measures, thus meeting the vibration resistance requirements. Compared with the traditional crimping connector, the cost is lower and the volume is smaller. The problem that the model of the main PCB board is complicated and difficult to manage due to the change in the specifications of the module PCB board can be solved, and the large-scale production of the main PCB board is realized, and the scale effect of the main PCB board production is improved. In addition, by arranging the component surface of the module PCB board to be perpendicular to the component surface of the main PCB board, the board area occupied by the module PCB board on the main PCB board can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of an embodiment of a printed circuit board connection structure of the utility model;
[0017] Figure 2 A schematic diagram of the structure for assembling the module PCB board and the conductive structural parts;
[0018] Figure 3 It is a partial structural schematic diagram of another embodiment of a printed circuit board connection structure of the utility model;
[0019] Figure 4 for Figure 3 A schematic diagram of the structure from another angle.
[0020] Explanation of the accompanying drawings: 1 main PCB board, 2 module PCB board, 21 positioning hole, 23 limiting hole, 25 screw hole, 3 conductive structural part, 31 first screw hole, 33 second screw hole, 35 positioning pin, 4 insulating positioning part, 41 positioning surface, 43 plug-in through hole, 45 limiting pin. DETAILED DESCRIPTION
[0021] like Figure 1As shown in the figure, this embodiment provides a printed circuit board connection structure, which includes a main PCB board 1, at least one module PCB board 2, and a number of conductive structural members 3 that are detachably connected to the main PCB board 1 and the module PCB board 2 respectively. The module PCB board is a power module. The component surface of the module PCB board 2 is perpendicular to the component surface of the main PCB board 1. Any conductive structural member 3 includes a first connection surface and a second connection surface that are perpendicular to each other. The conductive structural member 3 is electrically connected to the module PCB board 2 through the first connection surface and is electrically connected to the main PCB board 1 through the second connection surface. The conductive structural member 3 is a rectangular parallelepiped metal part. A first screw hole 31 and a second screw hole 33 that do not interfere with each other are provided on any conductive structural member 3. A number of screw holes 25 corresponding to a number of conductive structural members 3 are respectively provided on the module PCB board 2 and the main PCB board 1. The conductive structural member 3 is fixedly connected to the module PCB board 2 through screws and the first screw hole 31, and at the same time, is fixedly connected to the main PCB board 1 through screws and the second screw hole 33.
[0022] One conductive structural member 3 can act as a pin between the main PCB board 1 and the module PCB board 2 when assembled on the main PCB board 1 and the module PCB board 2 with the cooperation of two screws. The screw perpendicular to the main PCB board 1 on the conductive structural member 3 realizes the fixation of the main PCB board 1 and the conductive structural member 3. The second connection surface of the conductive structural member 3 is closely attached to the surface of the main PCB board 1 to achieve electrical connection and the flow of large currents. The screw perpendicular to the module PCB board 2 on the conductive structural member 3 realizes the fixation of the module PCB board 2 and the conductive structural member 3. The first connection surface of the conductive structural member 3 is closely attached to the surface of the module PCB board 2 to achieve electrical connection and the flow of large currents.
[0023] In actual production, the number of module PCB boards 2 and the number of conductive structural members 3 installed on one main PCB board 1 are determined according to specific functional requirements and parameter requirements. The shape of the conductive structural member 3 can be customized according to installation and current-carrying needs, as long as the two threaded holes on the conductive structural member 3 do not interfere with each other.
[0024] In this embodiment, the component side of the module PCB board 2 is perpendicular to the component side of the main PCB board 1, the first connection surface and the second connection surface of the conductive structure member 3 are perpendicular to each other. The vertical arrangement of the module PCB board 2 can reduce the occupied area of the module PCB board 2 on the main PCB board 1. The conductive structure member 3 is in the shape of a cuboid, which can minimize the occupied area of the module PCB board 2 as much as possible on the premise of meeting the vibration and current-carrying requirements. Designing the conductive structure member 3 on the same side of the components with a higher height on the module PCB board 2 can further reduce the occupied area of the module PCB board 2 on the main PCB board 1. Moreover, arranging the length extension direction of the cuboid conductive structure member 3 along the height extension direction or the length extension direction of the module PCB board 2 can minimize the overall thickness after the module PCB board 2 and the conductive structure member 3 are assembled, and can further reduce the occupied area of the module PCB board 2 on the main PCB board 1.
[0025] During installation, the conductive structure member 13 is first assembled with the module PCB board 2 and then with the main PCB board 1. In this way, as long as the electrical interfaces of the module PCB board 2 remain unchanged, the diverse application of its model specifications will not affect the mass production of the main PCB board 1. The component side of the module PCB board 2 is perpendicular to the component side of the main PCB board 1, which can effectively reduce the area of the module PCB board 2 occupying the main PCB board 1 and make overall use of the space perpendicular to the module PCB board 2. Although the assembly of the conductive structure member 3 on the module PCB board 2 (the number of pins of the power module is generally only a few) will increase a certain amount of assembly cost, this part of the assembly cost can be offset by the increase in the mass production quantity of the main PCB board 1. Compared with the thin PIN pins used in the traditional crimping method, the conductive structure member 3 is more suitable for the on-board situation with a larger flowing current, improving the mass production of the main PCB board 1.
[0026] In this embodiment, to ensure the flatness of the contact surfaces of the conductive structure member 13 with the module PCB board 2 and the main PCB board 1, as Figure 2 shown, two positioning pins 35 protrude from the first connection surface of the conductive structure member 3, and corresponding positioning holes 21 are recessed on the module PCB board 2 opposite to the positioning pins 35. Through the cooperation of the positioning pins 35 and the positioning holes 21, the horizontal direction consistency of the contact surfaces of all the conductive structure members 3 on the module PCB board 2 and the main PCB board 1 can be ensured.
[0027] As Figure 3 and Figure 4As shown in the figure, the horizontal consistency of the contact surfaces between all the conductive structural members 3 on the module PCB board 2 and the main PCB board 1 can also be ensured by the insulating positioning member 4. The insulating positioning member 4 includes a positioning surface 41 parallel to the component surface of the module PCB board 2 and a plurality of insertion through holes 43 opened in a direction perpendicular to the positioning surface 41. A limiting pin 45 protrudes from the positioning surface 41, and a limiting hole 23 is recessed on the module PCB board 2 opposite to the limiting pin 45. The conductive structural members 3 are inserted into the insertion through holes 43 one by one and maintain electrical connection between the first connection surface and the module PCB board 2. The conductive structural members 3 are embedded in the insulating positioning member 4 to ensure the planar consistency of the pins, and then the limiting pin 45 on the insulating positioning member 4 and the limiting hole 23 on the module PCB board 2 are used to ensure the planar consistency between the module PCB board 2 and the main PCB board 1.
[0028] In other embodiments, the screws on the conductive structural member 3 can also be conductive screws, and the nuts of the screws and the conductive structural member 3 are on different sides of the circuit board. Specifically, the conductive screws perpendicular to the module PCB board 2 on the conductive structural member 3 are used to fix the module PCB board 2 and the conductive structural member 3. The first connection surface of the conductive structural member 3 is in close contact with one surface of the module PCB board 2 to achieve electrical connection and the flow of large current, and the nut of the conductive screw is in close contact with the other surface of the module PCB board 2 to achieve electrical connection. The conductive screws perpendicular to the main PCB board 1 on the conductive structural member 3 are used to fix the main PCB board 1 and the conductive structural member 3. The second connection surface of the conductive structural member 3 is in close contact with the surface of the main PCB board 1 to achieve electrical connection and the flow of large current, and the nut of the conductive screw is in close contact with the other surface of the main PCB board 1 to achieve electrical connection. In other embodiments, the conductive structural member 3 and the module PCB board 2 can also be connected by welding. During production, a plurality of conductive structural members 3 are first welded to the corresponding positions on the module PCB board 2, and then the module PCB board 2 welded with the conductive structural members 3 is connected to the main PCB board. In addition to screw connection, the conductive structural member 3 can also be detachably connected to the main PCB board 1 by non-rivet riveting, and only the riveting parts corresponding to the conductive structural members 3 need to be pre-installed on the main PCB board 1.
[0029] Different from the existing electrical connection method through PIN pin crimping, the printed circuit board connection structure of this embodiment uses metal conductive structural parts to realize the electrical connection and fixed installation of the main PCB board and the module PCB board. The conductive structural parts can not only complete the high-current electrical connection, but also take into account the mechanical fixation. A single pin can pass a larger current to ensure the electrical connection without the need for additional mechanical fixing measures, thereby meeting the vibration resistance requirements. Compared with the traditional crimping connector, it has lower cost and smaller size, and can solve the problem of complex and difficult management of the main PCB board model caused by the change in the specifications of the module PCB board, thereby realizing the large-scale production of the main PCB board and improving the scale effect of the main PCB board production. In addition, by arranging the component surface of the module PCB board to be perpendicular to the component surface of the main PCB board, the board area occupied by the module PCB board on the main PCB board can be effectively reduced.
[0030] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.
[0031] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.
Claims
1. A printed circuit board connection structure, characterized in that: The invention comprises a main PCB board (1), at least one module PCB board (2), and a plurality of conductive structural members (3) respectively connected to the main PCB board (1) and the module PCB board (2), wherein any one of the conductive structural members (3) comprises a first connection surface and a second connection surface, and the conductive structural member (3) is electrically connected to the module PCB board (2) via the first connection surface and is electrically connected to the main PCB board (1) via the second connection surface.
2. The printed circuit board connection structure according to claim 1, characterized in that: The component surface of the module PCB (2) is perpendicular to the component surface of the main PCB (1), and the first connection surface and the second connection surface of the conductive structure (3) are perpendicular to each other.
3. The printed circuit board connection structure according to claim 2, characterized in that: The conductive structure (3) is located on a side of the module PCB (2) where the components are higher.
4. The printed circuit board connection structure according to claim 2, characterized in that: The conductive structure (3) is a rectangular metal part, and the length extension direction of the conductive structure (3) is the height extension direction or the length extension direction of the module PCB board (2).
5. The printed circuit board connection structure according to claim 1, characterized in that: The conductive structure (3) is connected to the module PCB (2) by welding or is detachably connected, and the conductive structure (3) is detachably connected to the main PCB (1).
6. The printed circuit board connection structure according to claim 1, characterized in that: Any of the conductive structural parts (3) is provided with a first screw hole (31) and a second screw hole (33) that do not interfere with each other, and the module PCB board (2) and the main PCB board (1) are provided with a plurality of screw holes corresponding to the plurality of the conductive structural parts (3), respectively; the conductive structural part (3) is fixedly connected to the module PCB board (2) via screws and the first screw holes (31), and is fixedly connected to the main PCB board (1) via screws and the second screw holes (33).
7. The printed circuit board connection structure according to any one of claims 1 to 6, characterized in that: A positioning pin (35) is convexly provided on the first connection surface of the conductive structure (3), and a positioning hole (21) is concavely provided on the module PCB board (2) opposite to the positioning pin (35).
8. The printed circuit board connection structure according to claim 7, characterized in that: Two positioning pins (35) are protrudingly provided on the first connecting surface of the conductive structure (3).
9. The printed circuit board connection structure according to any one of claims 1 to 6, characterized in that: The invention also comprises an insulating positioning member (4), wherein the insulating positioning member (4) comprises a positioning surface (41) parallel to the component surface of the module PCB board (2) and a plurality of plug-in through holes (43) opened in a direction perpendicular to the positioning surface (41); a limiting pin (45) is convexly provided on the positioning surface (41); a limiting hole (23) is concavely provided on the module PCB board (2) opposite to the limiting pin (45); the conductive structural members (3) are plugged into the plug-in through holes (43) one by one and keep the first connection surface electrically connected to the module PCB board (2).
10. The printed circuit board connection structure according to claim 6, characterized in that: The screw is a conductive screw, and the screw nut and the conductive structural component (3) are located on different sides of the circuit board.