Multilayer printed circuit board

Abstract

The utility model relates to a multilayer printed circuit board comprising a multilayer circuit board main body, the multilayer circuit board main body comprises a first circuit board, a second circuit board and a third circuit board, and corners of the first circuit board, the second circuit board and the third circuit board are all provided with grooves. Through holes are formed in the positions, provided with the grooves, of the first circuit board, the second circuit board and the third circuit board in a penetrating mode, the two-way threaded cylinders are located in the through holes respectively, metal rings are arranged on the outer sides of the two-way threaded cylinders, threaded holes are formed in the surfaces of the metal rings, and the nuts are arranged on the outer sides of the two-way threaded cylinders respectively. According to the technical scheme, the grooves are formed in the corners of the circuit boards, and the circuit boards are connected through cooperation of the bidirectional threaded cylinders and the nuts, so that workers can conduct tidy butt joint installation operation on the circuit boards, the tidy installation operation process is more convenient and rapid, meanwhile, the overall space occupancy rate is smaller, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a multi-layer printed circuit board. Background Art

[0002] A multilayer printed circuit board is a circuit board made up of multiple conductive layers and insulating layers stacked alternately. It can achieve more circuit connections in a smaller space, improving circuit integration and performance. However, since existing multilayer circuit boards generally use glue and hydraulic bonding to fix them, it is not conducive to the maintenance and replacement of the circuit boards in the future.

[0003] my country's public patent: "A multi-layer printed circuit board", application number: "202223538601.7", this patent has the advantage of easy connection through the setting of a connecting mechanism, which facilitates the subsequent removal, replacement and maintenance of one side of the multi-layer, reducing the difficulty of maintenance.

[0004] Although the above patent is more conducive to the connection between multi-layer circuit boards by setting up a connection mechanism and reducing the difficulty of maintenance, the connection structure between each circuit board occupies a large space, and during the installation process, it is difficult to achieve neat docking between the layers of printed circuit boards, which causes inconvenience in the docking installation process. Utility Model Content

[0005] Based on the above description, the present invention provides a multi-layer printed circuit board to solve the problem that the mounting structure between traditional multi-layer printed circuit boards occupies a large space and is inconvenient to install neatly.

[0006] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a multi-layer printed circuit board, comprising a multi-layer circuit board main body, the multi-layer circuit board main body comprising circuit board one, circuit board two and circuit board three, grooves being provided at the corners of circuit board one, circuit board two and circuit board three, through holes being provided through the positions of the grooves of circuit board one, circuit board two and circuit board three, a plurality of bidirectional threaded cylinders being respectively located in the plurality of through holes, a metal ring being provided on the outer side of the bidirectional threaded cylinder, a threaded hole being provided on the surface of the metal ring, and a plurality of nuts being respectively provided on the outer sides of the plurality of bidirectional threaded cylinders.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the groove is opened as a rectangular groove, the metal ring is located in the groove, and the metal ring is designed as a circular ring.

[0009] Furthermore, a rubber ring is sleeved on the outer side of the bidirectional threaded barrel, and a plurality of the rubber rings are respectively located between the multilayer circuit board body and a plurality of nuts.

[0010] Furthermore, a guide member is provided at one end of several of the bidirectional threaded barrels, and the guide member includes a connecting plate, a protrusion and a connecting rod. The connecting rod is arranged on one side of the connecting plate and connected to the bidirectional threaded barrel, and the protrusion is arranged on the other side.

[0011] Furthermore, the protrusion is designed as a conical structure, and the surface of the protrusion is set to be a smooth surface.

[0012] Furthermore, the tip of the protrusion is designed to be rounded.

[0013] Furthermore, the connecting rod is a threaded rod, and the connecting rod is threadedly connected to the inner side of the bidirectional threaded barrel.

[0014] Furthermore, the outer sides of the metal ring and the connecting plate are engraved with anti-slip patterns.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] By setting grooves at the corners of each circuit board and connecting each circuit board with a two-way threaded barrel and a nut, it is more convenient for workers to neatly dock and install each layer of circuit boards. The neat installation operation process is more convenient and quick, avoiding the inconvenience of the installation process caused by the difficulty in aligning the multi-layer circuit boards during the installation process. At the same time, the overall space occupancy rate is smaller and the practicality is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure between the first circuit board and the bidirectional threaded barrel of the utility model;

[0019] Figure 3 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the bidirectional threaded barrel of the utility model;

[0021] Figure 5 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Multi-layer circuit board body; 10. Groove; 100. Through hole; 11. Circuit board one; 12. Circuit board two; 13. Circuit board three; 2. Bidirectional threaded barrel; 21. Metal ring; 211. Threaded hole; 3. Nut; 4. Rubber ring; 5. Guide; 51. Connecting plate; 52. Protrusion; 53. Connecting rod. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0026] This embodiment provides a multi-layer printed circuit board, which is more conducive to achieving neat docking installation between each layer of the circuit board. Specifically, Figure 1-5 As shown, it includes a multi-layer circuit board body 1, multiple bidirectional threaded barrels 2 and multiple nuts 3. The multi-layer circuit board body 1 includes a circuit board 11, a circuit board 2 12 and a circuit board 3 13. Grooves 10 are provided on both sides of the circuit board 11, the circuit board 2 12 and the circuit board 3 13 and near the corners. Through holes 100 are provided at the positions of the grooves 10 provided on the circuit board 11, the circuit board 2 12 and the circuit board 3 13. The multiple bidirectional threaded barrels 2 are respectively located in the multiple through holes 100, and the top ends of the multiple bidirectional threaded barrels 2 protrude to the circuit board 11, the circuit board 2 and the circuit board 3. Above the first 11, the second circuit board 12 and the third circuit board 13, a metal ring 21 is provided on the outside of the bidirectional threaded barrel 2, and a threaded hole 211 is provided on the bottom surface of the metal ring 21. The threaded hole 211 is communicated with the inner cavity of the bidirectional threaded barrel 2, and multiple nuts 3 are respectively arranged on the outside of the protruding ends of the multiple bidirectional threaded barrels 2, so as to effectively utilize the protruding ends of the bidirectional threaded barrel 2 to achieve the guiding effect of each circuit board, effectively realize the neat docking operation of each circuit board, and be more conducive to the assembly operation. At the same time, the overall space occupancy rate is smaller, the practicality is stronger, and it is more conducive to popularization and use.

[0027] like Figure 1-3As shown, in this embodiment, the groove 10 is opened as an equilateral rectangular groove, and the metal ring 21 is located in the groove 10. The metal ring 21 is designed as a circular ring structure. The outer side of the metal ring 21 contacts the surface of each circuit board through the groove 10, so that the metal ring 21 can be effectively utilized to achieve the supporting and protective effect of the corners of each circuit board, avoiding accidental collision and damage at the corners during disassembly or use.

[0028] like Figure 1-3 As shown, in this embodiment, a rubber ring 4 is sleeved on the outer side of the bidirectional threaded barrel 2, and multiple rubber rings 4 are respectively located between the multi-layer circuit board body 1 and multiple nuts 3. The top surface and bottom surface of the rubber ring 4 are in close contact with the multiple nuts 3 and the surface of each circuit board, respectively, so that the connection between the nuts 3 and the bidirectional threaded barrel 2 and each circuit board is more stable, and at the same time, it can also avoid wear caused by direct contact between the nuts 3 and the circuit board.

[0029] like Figure 1-3 As shown, in this embodiment, one end of multiple bidirectional threaded barrels 2 is provided with a guide member 5, and the guide member 5 includes a connecting plate 51, a protrusion 52 and a connecting rod 53. The connecting rod 53 is arranged on one side of the connecting plate 51 and is connected to the bidirectional threaded barrel 2. The protrusion 52 is arranged on the other side of the connecting plate 51. The protrusion 52 is designed as a conical structure, and the horizontal cross-section gradually increases from top to bottom. The surface of the protrusion 52 is set to a smooth surface, and the tip of the protrusion 52 is designed to be smooth, which is more conducive to the staff to put each circuit board through the through hole 100 on the outside of the bidirectional threaded barrel 2, thereby improving the efficiency of neat docking of each circuit board.

[0030] like Figure 3 As shown, in this embodiment, the connecting rod 53 is a threaded rod, and the connecting rod 53 is threadedly connected to the inner side of the bidirectional threaded barrel 2, so that the guide member 5 located above the circuit board 3 13 can be disassembled separately, reducing the overall space occupancy.

[0031] like Figure 1-5 As shown, in this embodiment, the outer sides of the metal ring 21 and the connecting plate 51 are engraved with anti-slip grooves, making it easier and more convenient for the staff to grab, press and rotate when they need to disassemble the guide member 5 or the bidirectional threaded cylinder 2.

[0032] When the above-mentioned multi-layer printed circuit boards need to be docked, first, multiple bidirectional threaded barrels 2 are inserted one by one into the through holes 100 opened in the circuit board 11, so that one end of the bidirectional threaded barrel 2 protrudes above the circuit board 11, and then the nut 3 is used to connect to the outer side of the protruding end of the bidirectional threaded barrel 2, so that the top surface of the metal ring 21 contacts the surface of the circuit board at the corresponding position. At this time, the top end of the bidirectional threaded barrel 2 protrudes above the circuit board 11, and then, another bidirectional threaded barrel 2 can be again sleeved into the through hole 100 opened in the circuit board 2 12 according to the above steps, and connected to the protruding end of the bidirectional threaded barrel 2 close to the circuit board 11, and the nut 3 is used again to connect to the protruding end of the bidirectional threaded barrel 2 close to the circuit board 2 12, and finally the circuit board 3 13 can be connected using the above operation to complete the neat docking between the multi-layer circuit boards.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multilayer printed circuit board, comprising a multilayer circuit board body (1), characterized in that: The multilayer circuit board body (1) comprises a circuit board 1 (11), a circuit board 2 (12) and a circuit board 3 (13); grooves (10) are provided at the corners of the circuit board 1 (11), the circuit board 2 (12) and the circuit board 3 (13); and through holes (100) are provided through the positions of the grooves (10) provided on the circuit board 1 (11), the circuit board 2 (12) and the circuit board 3 (13); A plurality of bidirectional threaded cylinders (2) are respectively located in a plurality of the through holes (100); a metal ring (21) is provided on the outer side of the bidirectional threaded cylinder (2); and a threaded hole (211) is opened on the surface of the metal ring (21); A plurality of nuts (3) are respectively arranged on the outsides of a plurality of bidirectional threaded cylinders (2).

2. A multilayer printed circuit board according to claim 1, characterized in that: The groove (10) is formed as a rectangular groove, the metal ring (21) is located in the groove (10), and the metal ring (21) is designed as a circular ring.

3. The multilayer printed circuit board according to claim 1, wherein: A rubber ring (4) is sleeved on the outer side of the bidirectional threaded barrel (2), and a plurality of the rubber rings (4) are respectively located between the multilayer circuit board body (1) and a plurality of nuts (3).

4. The multilayer printed circuit board according to claim 1, wherein: A guide member (5) is provided at one end of each of the bidirectional threaded cylinders (2). The guide member (5) includes a connecting plate (51), a protrusion (52) and a connecting rod (53). The connecting rod (53) is provided on one side of the connecting plate (51) and is connected to the bidirectional threaded cylinder (2). The protrusion (52) is provided on the other side.

5. A multilayer printed circuit board according to claim 4, characterized in that: The protrusion (52) is designed as a conical structure, and the surface of the protrusion (52) is set as a smooth surface.

6. The multilayer printed circuit board according to claim 4, characterized in that: The tip of the protrusion (52) is designed to be rounded.

7. The multilayer printed circuit board according to claim 4, characterized in that: The connecting rod (53) is a threaded rod, and the connecting rod (53) is threadedly connected to the inner side of the bidirectional threaded cylinder (2).

8. The multilayer printed circuit board according to claim 4, characterized in that: The outer sides of the metal ring (21) and the connecting plate (51) are both engraved with anti-slip lines.

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