Printed circuit board (PCB) with blind buried holes

Abstract

The utility model discloses a PCB circuit board with blind buried holes, relates to the circuit board field, and comprises a butt joint top plate and a fixing assembly, the middle lower end of the butt joint top plate is provided with a positioning column, the bottom end of the positioning column is provided with a blind hole, and the fixing assembly used for stable installation is arranged at the end of the blind hole. The fixing assembly comprises a fixing frame, a reset spring, a blocking piece and a fixing column, the reset spring is installed at the end of the fixing frame, the blocking piece is arranged at the end of the reset spring, and the fixing column is installed at the end of the blocking piece. According to the PCB with the blind and buried holes, the positioning columns can be installed in the blind holes through the fixing assemblies, the PCB main body can be better fixed in a clamping mode, and the through holes are fixed through bolts, so that the tightness of connection between the through holes can be ensured; and parts of the circuit board are not convenient to damage due to middle installation, meanwhile, the circuit board is convenient to disassemble and maintain, and the convenience of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, in particular to a PCB circuit board with blind buried holes. Background Art

[0002] PCB Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, the support of electronic components, and the carrier of electrical connection of electronic components. PCB multi-layer circuit board refers to a printed circuit board with more than two layers. It is composed of connecting wires on several layers of insulating substrates and pads for assembling and welding electronic components. It has the function of conducting each layer of lines and insulating each other. The blind hole of the circuit board is a type of via that connects the inner layer of the PCB with the surface layer of the PCB. This hole does not penetrate the entire board. Buried hole: Buried hole is a type of via that only connects the lines between the inner layers, so it cannot be seen from the surface of the PCB.

[0003] When installing existing circuit boards, most of them are directly connected to the housing by bolts. During the installation process, if the bolts are tightened too much, it is easy to cause damage to the PCB circuit board, while if they are tightened too loosely, the installation will be affected, which brings inconvenience to the installer.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a PCB circuit board with blind buried vias is provided. Summary of the invention

[0005] The purpose of the utility model is to provide a PCB circuit board with blind buried vias to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PCB circuit board with blind buried holes, comprising a docking top plate and a fixing component, a positioning column is installed at the lower end of the middle part of the docking top plate, and a blind hole is opened at the bottom end of the positioning column, the fixing component for stable installation is arranged at the end of the blind hole, and the fixing component comprises a fixing frame, a reset spring, a baffle and a fixing column, a reset spring is installed at the end of the fixing frame, and a baffle is arranged at the end of the reset spring, and a fixing column is installed at the end of the baffle.

[0007] Furthermore, a through hole is provided at the upper end of the docking top plate, and fixing ears are provided at both ends of the docking top plate.

[0008] Furthermore, a first heat sink is disposed below the docking top plate, and a circuit board body is disposed below the first heat sink.

[0009] Furthermore, a second heat sink is provided below the circuit board body, and the second heat sink has the same shape as the first heat sink.

[0010] Furthermore, a docking base plate is provided below the second heat dissipation plate, and heat dissipation components for efficient heat dissipation are provided at both ends of the docking base plate.

[0011] Furthermore, the heat dissipation component includes a connecting slot and a heat-absorbing metal plate, and the heat-absorbing metal plate is arranged on the right side of the connecting slot.

[0012] Furthermore, the heat dissipation assembly also includes a connecting block and a heat sink. The upper end of the heat-absorbing metal plate is provided with a connecting block, and the right end of the heat-absorbing metal plate is provided with a heat sink.

[0013] Furthermore, four groups of fixing ears are provided, and the fixing ears and the docking top plate are fixedly connected.

[0014] The utility model provides a PCB circuit board with blind buried vias, which has the following beneficial effects:

[0015] 1. The utility model is provided with a fixing assembly, which can install the positioning column into the blind hole, and can better fix the PCB circuit board body by means of a clip-on method. The through hole is fixed with bolts to ensure the tightness of the connection. The installation in the middle is not easy to cause damage to the parts of the circuit board, and it is easy to disassemble and repair it, which can increase the convenience of the device.

[0016] 2. The utility model can increase the heat exchange between the heat generated by the circuit board body and the external air by providing the first heat sink and the second heat sink, thereby increasing the heat dissipation efficiency. The use of the heat-absorbing metal plate and the connecting card block can better accelerate the heat dissipation of the device, which is beneficial to the normal use of the PCB circuit board and effectively prolongs the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a PCB circuit board with blind buried vias according to the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of a PCB circuit board with blind buried vias according to the utility model;

[0019] Figure 3 The utility model is a PCB circuit board with blind buried holes Figure 2 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. docking top plate; 2. positioning column; 3. blind hole; 4. fixing component; 401. fixing frame; 402. return spring; 403. baffle; 404. fixing column; 5. first heat sink; 6. through hole; 7. fixing ear; 8. circuit board body; 9. second heat sink; 10. docking bottom plate; 11. heat dissipation component; 1101. connecting card slot; 1102. heat-absorbing metal plate; 1103. connecting card block; 1104. heat sink. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] like Figure 1 As shown, a PCB circuit board with blind buried holes includes a docking top plate 1 and a fixing assembly 4, a through hole 6 is opened at the upper end of the docking top plate 1, and fixing ears 7 are arranged at both ends of the docking top plate 1, and the through hole 6 is fixed by bolts to ensure the tightness of the connection between them, and it is convenient to disassemble and repair it, which can increase the convenience of the device. A first heat sink 5 is arranged below the docking top plate 1, and a circuit board body 8 is arranged below the first heat sink 5, and a second heat sink 9 is arranged below the circuit board body 8, and the second heat sink 9 and the first heat sink 5 have the same shape. By arranging the first heat sink 5 and the second heat sink 9, the heat exchange between the heat generated by the circuit board body 8 and the external air can be increased, thereby increasing the heat dissipation efficiency. A docking base plate 10 is provided, and heat dissipation components 11 for efficient heat dissipation are provided at both ends of the docking base plate 10. The heat dissipation component 11 includes a connecting card slot 1101 and a heat-absorbing metal plate 1102, and a heat-absorbing metal plate 1102 is provided on the right side of the connecting card slot 1101. The heat dissipation component 11 also includes a connecting card block 1103 and a heat sink 1104. The upper end of the heat-absorbing metal plate 1102 is provided with a connecting card block 1103, and the right end of the heat-absorbing metal plate 1102 is provided with a heat sink 1104. The use of the heat-absorbing metal plate 1102 and the connecting card block 1103 can better accelerate the heat dissipation of the device, which is beneficial to the normal use of the PCB circuit board and effectively prolongs the service life of the device. Four groups of fixing ears 7 are provided, and the fixing ears 7 and the docking top plate 1 are fixedly connected.

[0023] like Figure 2 and Figure 3As shown, a positioning column 2 is installed at the lower end of the middle part of the docking top plate 1, and a blind hole 3 is opened at the bottom end of the positioning column 2, and a fixing component 4 for stable installation is arranged at the end of the blind hole 3, and the fixing component 4 includes a fixing frame 401, a return spring 402, a baffle 403 and a fixing column 404, a return spring 402 is installed at the end of the fixing frame 401, and a baffle 403 is arranged at the end of the return spring 402, and a fixing column 404 is installed at the end of the baffle 403. By providing the fixing component 4, the positioning column 2 can be installed in the blind hole 3, and the PCB circuit board body 8 can be better fixed by snapping.

[0024] In summary, the PCB circuit board with blind buried vias is first based on Figure 1-Figure 3 In the structure shown in the figure, the first heat sink 5 and the second heat sink 9 are fixed on both sides of the circuit board body 8, the docking top plate 1 and the docking bottom plate 10 are docked through a simple clamping structure, the positioning column 2 on the docking top plate 1 is inserted into the blind hole 3, and the positioning column 2 can be fixed under the fixation of the fixing column 404 driven by the reset spring 402, and the PCB circuit board body 8 can be better fixed by clamping, and the through hole 6 is fixed by bolts to ensure the tightness of the connection between them. During use, the first heat sink 5 and the second heat sink 9 can increase the heat generated by the circuit board body 8 to exchange with the external air, and the connecting card block 1103 on the heat-absorbing metal plate 1102 is inserted into the connecting card slot 1101 to complete the installation of the heat sink 1104, which is beneficial to improve the heat dissipation efficiency of the device, is beneficial to the normal use of the PCB circuit board, and effectively extends the service life of the device.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A PCB circuit board with blind buried vias, comprising a docking top plate (1) and a fixing component (4), characterized in that: A positioning column (2) is installed at the lower middle end of the docking top plate (1), and a blind hole (3) is opened at the bottom end of the positioning column (2). The fixing component (4) for stable installation is arranged at the end of the blind hole (3), and the fixing component (4) comprises a fixing frame (401), a return spring (402), a baffle (403) and a fixing column (404). The end of the fixing frame (401) is installed with a return spring (402), and the end of the return spring (402) is provided with a baffle (403), and the end of the baffle (403) is installed with a fixing column (404).

2. A PCB circuit board with blind buried vias according to claim 1, characterized in that: A through hole (6) is provided at the upper end of the docking top plate (1), and fixing ears (7) are provided at both ends of the docking top plate (1).

3. A PCB circuit board with blind buried vias according to claim 1, characterized in that: A first heat dissipation plate (5) is arranged below the docking top plate (1), and a circuit board body (8) is arranged below the first heat dissipation plate (5).

4. A PCB circuit board with blind buried vias according to claim 3, characterized in that: A second heat dissipation plate (9) is provided below the circuit board body (8), and the second heat dissipation plate (9) and the first heat dissipation plate (5) have the same shape.

5. A PCB circuit board with blind buried vias according to claim 4, characterized in that: A docking base plate (10) is provided below the second heat dissipation plate (9), and heat dissipation components (11) for efficient heat dissipation are provided at both ends of the docking base plate (10).

6. A PCB circuit board with blind buried vias according to claim 5, characterized in that: The heat dissipation component (11) comprises a connecting slot (1101) and a heat-absorbing metal plate (1102), and the heat-absorbing metal plate (1102) is arranged on the right side of the connecting slot (1101).

7. A PCB circuit board with blind buried vias according to claim 6, characterized in that: The heat dissipation assembly (11) further comprises a connection block (1103) and a heat sink (1104); the connection block (1103) is arranged at the upper end of the heat-absorbing metal plate (1102), and the heat sink (1104) is arranged at the right end of the heat-absorbing metal plate (1102).

8. A PCB circuit board with blind buried vias according to claim 2, characterized in that: Four groups of fixing ears (7) are provided, and the fixing ears (7) and the docking top plate (1) are fixedly connected.

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