High-precision multilayer PCB circuit board

Abstract

The utility model relates to the technical field of multilayer PCB (Printed Circuit Board), and particularly relates to a high-precision multilayer PCB, which comprises two groups of circuit boards, grooves are formed on the two sides of each group of circuit boards, and plug-in boards are fixed in the grooves; plug-in blocks are arranged at the bottom of the grooves; the plug-in boards comprise connecting plates and connecting shafts fixed to the outer sides of the connecting plates; connecting shafts are fixed to the outer side walls of one end of the connecting plates and the plug-in blocks; connecting pads are sleeved on the outer sides of the connecting shafts; locking nuts are sleeved on the outer sides of the connecting pads; the plug-in blocks and the connecting plates are connected by plugging; the fastening effect of the locking nuts can enhance the tightness of the overall connection; the insulating rubber pads can also have a good insulating and isolating effect, which can avoid electric leakage interference between the circuits, disperse the stress during locking, reduce the extrusion damage to the circuit boards, and ensure the high-precision performance and use stability of the PCB (Printed Circuit Board) by taking into account the connection stability, insulating safety and assembly rationality of the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of multilayer PCB circuit board technology, and specifically to a high-precision multilayer PCB circuit board. Background Technology

[0002] With the rapid development of the electronic information industry, electronic devices are increasingly demanding higher precision and integration from PCB circuit boards. Multilayer PCB circuit boards are widely used in high-end fields such as communications, aerospace, and precision instruments due to their advantages such as high-density wiring and space saving.

[0003] However, existing multilayer PCBs often face numerous technical challenges in interlayer connections: traditional soldering connections are not only cumbersome to operate, but the high temperatures of soldering can also damage precision components on the PCB, making disassembly difficult during later maintenance and hindering PCB repair and replacement; some connections using direct bolt fixing are prone to uneven stress, leading to deformation or damage at the PCB edges, and lack effective insulation structures, easily causing interlayer leakage, signal interference, and other problems that affect equipment stability; furthermore, the interlayer connections lack stability, and after vibrations during equipment operation or long-term use, the connections are prone to loosening, resulting in poor contact, and in severe cases, even affecting the normal operation of the entire electronic system. Simultaneously, existing connection structures have poor adaptability, making it difficult to achieve precise fit with PCBs of different heights, and the balance and reliability of the connections are difficult to guarantee. These problems all restrict the further application of multilayer PCBs in high-precision scenarios. Utility Model Content

[0004] Technical problems to be solved

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-precision multilayer PCB circuit board, which can effectively solve the problems in the existing technology.

[0006] Technical solution

[0007] This utility model provides a high-precision multilayer PCB circuit board, including two sets of circuit boards. Each set of circuit boards has a groove on both sides, and an insert plate is fixed in the groove. An insert block is provided at the bottom of the groove. The insert plate includes a connecting plate and a connecting shaft fixed to the outside of the connecting plate. The connecting shaft is fixed on the outer wall of one end of the connecting plate and the insert block. A connecting pad is sleeved on the outside of the connecting shaft. A locking nut is sleeved on the outside of the connecting pad. The insert block and the connecting plate are inserted and connected.

[0008] Furthermore, a socket is fixed to the inner side of the top of the connecting plate, and a plug head is fixed to the outer side wall of the plug block. The socket and the plug head are connected by insertion.

[0009] Furthermore, multiple sets of the plug-in blocks and plug-in boards are equidistantly arranged at both ends of the two sets of circuit boards.

[0010] Furthermore, multiple through grooves are provided at the four corners of the connecting pad, a threaded structure is provided at the end of the connecting shaft, and the locking nut is fixed on the outside of the connecting pad.

[0011] Furthermore, the connecting plate is an inverted L-shaped structure, and the length of the connecting plate is adapted to the height of the circuit board.

[0012] Furthermore, the connecting pad is made of insulating rubber sheet material.

[0013] Beneficial effects

[0014] In this invention, the insertion of plugs and connecting plates, along with the precise alignment of sockets and plug heads, enables the stable assembly of two circuit boards. Multiple equidistant plugs and plates further enhance the balance and reliability of the connection, ensuring the multi-layered structure is less prone to loosening during use. The inverted L-shaped connecting plate is height-matched to the circuit board, ensuring a snug fit and effectively protecting the circuit board edges. The threaded structure at the end of the connecting shaft, combined with a locking nut and an insulating rubber connecting pad, not only strengthens the overall connection's tightness through the locking nut's tightening action, but the insulating rubber pad also provides excellent insulation, preventing leakage interference between circuits. Furthermore, the multiple through-grooves at the four corners of the connecting pad help disperse stress during locking, reducing pressure damage to the circuit board. The overall structure balances connection stability, insulation safety, and assembly rationality, effectively guaranteeing the high precision performance and operational stability of the PCB circuit board. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0017] Figure 2 This is the second structural schematic diagram of the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure at point A;

[0019] Figure 4 This is a structural exploded view of the insert block and insert plate in this utility model.

[0020] The labels in the diagram represent: 1. Circuit board; 2. Insert board; 21. Connecting board; 22. Connecting shaft; 23. Socket; 3. Insert block; 31. Insert head; 4. Connecting pad; 41. Locking nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example: A high-precision multilayer PCB circuit board, as shown in the attached figure. Figure 1 - Appendix Figure 4 The circuit board 1 includes two sets of circuit boards 1. Each set of circuit boards 1 has slots on both sides, and insert plates 2 are fixed in the slots. Insert blocks 3 are provided at the bottom of the slots. The insert plates 2 include a connecting plate 21 and a connecting shaft 22 fixed to the outside of the connecting plate 21. The connecting shaft 22 is fixed on the outer side wall of one end of the connecting plate 21 and the insert block 3. A connecting pad 4 is sleeved on the outside of the connecting shaft 22. A locking nut 41 is sleeved on the outside of the connecting pad 4. The insert block 3 and the connecting plate 21 are inserted and connected.

[0024] A socket 23 is fixed to the inner top of the connecting plate 21, and a plug head 31 is fixed to the outer side of the plug block 3. The socket 23 and the plug head 31 are connected by insertion. Multiple sets of plug blocks 3 and plug plates 2 are equidistantly arranged at both ends of the two sets of circuit boards 1. Through the insertion connection of the plug block 3 and the connecting plate 21, and the precise docking of the socket 23 and the plug head 31, the two sets of circuit boards 1 can be stably assembled. The multiple sets of equidistant plug blocks 3 and plug plates 2 further improve the balance and reliability of the connection, ensuring that the multi-layer structure is not easy to loosen during use. The inverted L-shaped connecting plate 21 is height-matched with the circuit board 1, which not only ensures the fit of the connection, but also provides effective protection for the edges of the circuit board 1.

[0025] The connecting pad 4 has multiple through slots at each of its four corners. The end of the connecting shaft 22 has a threaded structure, and the locking nut 41 is fixed to the outside of the connecting pad 4. The connecting pad 4 is made of insulating rubber. The connecting plate 21 has an inverted L-shaped structure, and the length of the connecting plate 21 is adapted to the height of the circuit board 1. The threaded structure at the end of the connecting shaft 22, combined with the locking nut 41 and the insulating rubber connecting pad 4, not only enhances the tightness of the overall connection through the tightening effect of the locking nut 41, but the insulating rubber pad also provides good insulation and isolation, preventing leakage interference between circuits. At the same time, the multiple through slots at the four corners of the connecting pad 4 help to disperse the stress during locking, reducing the squeezing damage to the circuit board 1. The overall structure takes into account the connection stability, insulation safety, and assembly rationality, effectively ensuring the high precision performance and operational stability of the PCB circuit board 1.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision multilayer PCB circuit board, characterized in that, The circuit board includes two sets of circuit boards (1). Each set of circuit boards (1) has a slot on both sides, and a plug plate (2) is fixed in the slot. A plug block (3) is provided at the bottom of the slot. The plug plate (2) includes a connecting plate (21) and a connecting shaft (22) fixed to the outside of the connecting plate (21). The connecting shaft (22) is fixed on the outer side wall of one end of the connecting plate (21) and the plug block (3). A connecting pad (4) is sleeved on the outside of the connecting shaft (22). A locking nut (41) is sleeved on the outside of the connecting pad (4). The plug block (3) and the connecting plate (21) are connected by insertion.

2. The high-precision multilayer PCB circuit board according to claim 1, characterized in that, A socket (23) is fixed to the inner side of the top of the connecting plate (21), and a plug head (31) is fixed to the outer side wall of the plug block (3). The socket (23) and the plug head (31) are connected by insertion.

3. The high-precision multilayer PCB circuit board according to claim 1, characterized in that, The plug (3) and plug plate (2) are arranged in multiple sets at equal intervals at both ends of the two sets of circuit boards (1).

4. The high-precision multilayer PCB circuit board according to claim 1, characterized in that, The four corners of the connecting pad (4) are provided with multiple through grooves, the end of the connecting shaft (22) is provided with a threaded structure, and the locking nut (41) is fixed on the outside of the connecting pad (4).

5. The high-precision multilayer PCB circuit board according to claim 4, characterized in that, The connecting plate (21) is an inverted L-shaped structure, and the length of the connecting plate (21) is adapted to the height of the circuit board (1).

6. The high-precision multilayer PCB circuit board according to claim 1, characterized in that, The connecting pad (4) is made of insulating rubber sheet.

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