Multifunctional adjustable PCB

Abstract

The utility model discloses a multifunctional adjustable PCB, which comprises a hard board, a flexible board and an expansion connector hole site, the hard board and the flexible board are arranged at intervals, the hard board comprises an aviation plug, an aviation plug fixing support and a hard board auxiliary board, and the main hard board main board can be switched through an expansion connector; a plurality of mounting holes are formed in the hard board main board and are used for mounting and dismounting aviation plugs; the expansion connector hole site can be used for installing an expansion connector to be connected with an expansion hard board, and can be used for expanding the number of signals to cope with system upgrading and reduce upgrading cost. The flexible board between the hard board main board and the hard board auxiliary board is adjusted so as to adjust the position relation between the hard boards, and reasonable installation is achieved through a limited space. The design is mainly used for dealing with high-speed signal transmission of aerospace crafts and aircrafts in severe impact vibration and low-pressure environments, the reliability and the service life of the PCB in a severe environment are improved, meanwhile, signal expansion deals with later system upgrading, and the upgrading cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and more specifically, discloses a multifunctional adjustable PCB board. Background Technology

[0002] During flight, especially in low-pressure environments, electrical safety clearances are a primary consideration. The lower the air pressure, the wider the electrical safety clearances need to be, which reduces the number of traces on the PCB. Because the copper foil on the PCB is very thin, it is highly susceptible to oxidation and mold growth under these environmental conditions. In such cases, the transmission performance of the PCB will drop sharply, potentially leading to signal interruption.

[0003] Traditional crimping methods cannot solve the problems of low air pressure, mold, salt spray, and humid environments; they can only address vibration environments because they cannot achieve a complete seal. Traditional terminal block wiring methods increase the number of connection points between boards, and from a reliability perspective, the more connection points there are, the greater the potential for risk.

[0004] Furthermore, unlike conventional aircraft, aircraft avionics systems require continuous upgrades. Existing avionics transmission boards do not account for future upgrades. When the avionics system's hardware and software no longer meet current requirements, upgrades are necessary, rendering the existing signal transmission boards obsolete. Currently used signal transmission boards are adjustable PCBs combining rigid and flexible boards, which are expensive. Therefore, the PCB mounting board's expandability needs to be considered to broaden its applicability while simultaneously reducing upgrade costs.

[0005] A search revealed CN201922024496.7, which discloses a flexible connection kit between PCB boards. The kit includes a first PCB board and a second PCB board. Each PCB board has a fourth fixing hole at its edge. A flexible conductive sheet is positioned between the first and second PCB boards. The flexible conductive sheet includes a first protective film, a second protective film, and copper foil. A protective structure is provided on the flexible conductive sheet, and this protective structure is connected to the fourth fixing holes of the first and second PCB boards via a fastening structure. This fastening device ensures a tighter and more stable fit between the flexible conductive sheet and the circuit board, guaranteeing normal conductivity of the flexible conductive sheet and preventing direct contact between the flexible conductive sheet and the connector, thus avoiding tearing or damaging the flexible conductive sheet during handling or installation.

[0006] The aforementioned existing patents do not address the issues of low air pressure, mold, salt spray, humid and hot environments, or sealing problems; nor do they address the issue of PCB mounting board expandability.

[0007] Therefore, the disclosure of a multifunctional adjustable PCB board suitable for use in low-pressure, moldy, salt spray, and humid environments under sealed conditions ensures reliable use and is of great significance for practical applications. Utility Model Content

[0008] This invention addresses the shortcomings of existing technologies by providing a multifunctional adjustable PCB board that combines a rigid board and a flexible board, enabling efficient installation within limited space. Simultaneously, the rigid board features expansion connector mounting holes, allowing for connection or expansion as needed, increasing the PCB board's compatibility. It is compatible with various devices and interfaces, adapting to different work and life scenarios, and enhancing its flexibility and convenience.

[0009] Meanwhile, the flexible board connection allows the angles of each rigid board to be adjusted to the required installation position. Furthermore, the PCB board has a long service life and is less prone to damage under conditions of severe vibration.

[0010] Furthermore, the multifunctional adjustable PCB board of this utility model connects the rigid board and the flexible board as a whole to form a completely sealed connection surface. The rigid board and the flexible board are then sealed again with high-performance silicone to ensure that the signal transmission lines between the rigid board and the flexible board are not affected by the corrosion of the signal lines caused by oxidation and mold in the external low air pressure, salt spray, and mold environment, as well as the electrical safety hazards caused by high-density wiring in the low air pressure environment.

[0011] The above-mentioned objectives of this utility model are achieved through the following technical solutions:

[0012] A multifunctional adjustable PCB board is disclosed, comprising a rigid board and a flexible board. The rigid board is provided with a mounting position for mounting an aviation plug, and one side of the rigid board is provided with an expansion connector mounting hole, which can be used to install one or N signal transmission sub-boards for system upgrades and expansions. The rigid board and the flexible board are spaced apart to adjust the positional relationship between the rigid boards.

[0013] The adjustable PCB board of this invention combines a rigid board and a flexible board, and improves the bonding performance of the entire board through hot melt pressing; and the aviation plug is set to be detachably connected to the PCB board, making the installation of the aviation plug more stable and suitable for vibration conditions. The vibration and impact resistance of the entire PCB board connection is stronger, and the signal transmission is continuous and stable.

[0014] Furthermore, the rigid board includes a main rigid board for mounting the aviation connector and a secondary rigid board disposed on one side of the main rigid board. The mounting position includes a plurality of mounting holes on the main rigid board for reinforcing the installation and removal of the aviation connector. The mounting holes are through holes, and groups of mounting holes surround the same circumference of the aviation connector, with the center of the connecting line between the centers of the mounting holes being the same as the center of the aviation connector. By fixing the aviation connector with screws, the entire aviation connector is more securely mounted on the PCB board, making it more suitable for use in harsh aviation environments compared to existing methods that solder the aviation connector to the PCB board.

[0015] Aviation connectors, through the installation of reinforced brackets and rigid motherboards, play a reliable role in harsh impact and vibration environments.

[0016] Furthermore, the rigid board motherboard includes a rigid board body and a transition plate connected to one side of the rigid board body. A stepped opening is provided at the connection between the rigid board body and the transition plate to provide clearance for installation.

[0017] Furthermore, both the rigid plate body and the transition plate are rectangular plates, and the transition plate is staggered on one side of the rigid plate body.

[0018] Furthermore, the aviation connector is equipped with a reinforced bracket and a rigid motherboard to improve its reliability under harsh shock and vibration environments.

[0019] Furthermore, the rigid motherboard is also provided with aviation plug soldering holes, and the aviation plug is connected to the aviation plug soldering holes for wave soldering.

[0020] Furthermore, the expansion connector mounting hole is located on the side away from the aviation plug; both the rigid motherboard and the rigid subboard are equipped with signal transmission subboards, and adjacent signal transmission subboards are symmetrically distributed on both sides of the flexible board.

[0021] Furthermore, the rigid board and the flexible board are joined together by heat fusion, forming a completely sealed connection surface. The flexible board uses multiple layers of insulating material, which are then butt-fitted to the edges of the rigid board and subjected to high-temperature extrusion, followed by sealing with adhesive at the joint. This pressing and complete sealing of the rigid and flexible boards ensures that the entire PCB board is free from oxidation and air leakage, resulting in excellent performance. The overall connection forms a completely sealed connection surface, and the rigid and flexible boards are further sealed with high-performance silicone, ensuring that the signal transmission lines between the rigid and flexible boards are not affected by oxidation or mold growth caused by external low-pressure, salt spray, or mold environments, thus protecting electrical transmission and mitigating electrical safety hazards caused by high-density wiring in low-pressure environments.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] The multifunctional adjustable PCB disclosed in this utility model combines a rigid board and a flexible board, making reasonable installation in a limited space; at the same time, the rigid board is provided with expansion connector mounting holes, which can be connected or expanded according to the needs of use, increasing the compatibility of the PCB board, enabling it to be compatible with a variety of devices and interfaces, adapting to different work and life scenarios, and improving the flexibility and convenience of use.

[0024] Furthermore, this utility model's multifunctional adjustable PCB board forms a completely sealed connection surface between the rigid board and the flexible board, and a secondary seal is achieved between the rigid board and the flexible board using high-performance silicone. This ensures that the signal transmission lines between the rigid board and the flexible board are not affected by oxidation or mold growth caused by external low-pressure, salt spray, or moldy environments, thus protecting electrical transmission and mitigating electrical safety hazards caused by high-density wiring in low-pressure environments. It is particularly suitable for harsh conditions with strong vibrations and low air pressure.

[0025] The expansion connector holes can be used to install expansion connectors and connect them to expansion rigid boards, increasing the number of signals and reducing upgrade costs for system upgrades. The flexible board between the rigid board motherboard and the rigid board sub-board can be adjusted to regulate the positional relationship between the rigid boards. Combining the rigid board and the flexible board allows for efficient installation within limited space; simultaneously, the rigid board's irregular shape allows for adjustments to its structure to accommodate different installation positions of other components, creating various avoidance configurations; the flexible board connection allows the angles of each rigid board to be adjusted to the required installation position. Furthermore, this design primarily addresses high-speed signal transmission in aerospace vehicles and aircraft under severe impact vibrations and low-pressure environments, improving the reliability and lifespan of the PCB board in harsh environments, while also providing signal expansion capabilities to support future system upgrades and reduce upgrade costs. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0027] Figure 1 This is a schematic diagram of the overall structure of the multifunctional adjustable PCB board described in this utility model.

[0028] Figure 2 This is a side view of the multifunctional adjustable PCB board described in this utility model.

[0029] Among them, 1-rigid board, 11-rigid board main board, 111-rigid board body, 112-transition board, 12-rigid board sub-board, 2-flexible board, 5-aviation plug, 51-base, 52-fixed socket, 53-reinforcement bracket, 54-screw, 6-step opening, 7-aviation plug soldering hole, 9-signal transmission sub-board. Detailed Implementation

[0030] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims. Example 1

[0031] like Figures 1-2 As shown, the multifunctional adjustable PCB board of this embodiment includes a rigid board 1 and a flexible board 2, which are spaced apart. The rigid board 1 includes a main rigid board 11 for mounting aviation connectors 5 and a secondary rigid board 12 disposed on one side of the main rigid board 11. The main rigid board 11 has several mounting holes for mounting and removing the aviation connectors 5. The secondary rigid board 12 is rectangular. The rigid board 1 has mounting positions for mounting the aviation connectors 5, and one side of the rigid board 1 has an expansion connector mounting hole, which can be used to install one or more signal transmission sub-boards 9 for system upgrades and expansion. In this embodiment, there are two signal transmission sub-boards 9, which are placed on the main rigid board 11 and the secondary rigid board 12 respectively. The expansion connector mounting hole is located on the side away from the aviation connectors 5. Signal transmission sub-boards 9 are mounted on both the main rigid board 11 and the secondary rigid board 12, and adjacent signal transmission sub-boards 9 are symmetrically distributed on both sides of the flexible board 2. The positional relationship between the rigid boards is adjusted by adjusting the flexible board 2 between the main rigid board 11 and the secondary rigid board 12.

[0032] The aviation plug 5 includes a base 51 located near the hardboard motherboard 11, and a fixed socket 52 located above the base 51 for connecting electromechanical components of external electrical circuits.

[0033] In this embodiment, the rigid board 1 and the flexible board 2 are joined together by heat fusion. Specifically, the flexible board 2 is made of multiple layers of insulating material, which are then joined to the edge of the rigid board 1 and subjected to high-temperature extrusion, followed by sealing and potting at the joint. The pressing and full sealing of the rigid board 1 and the flexible board 2 ensures that the entire PCB board does not oxidize or leak air, resulting in excellent performance.

[0034] In this embodiment, the rigid motherboard 11 has a rectangular structure, and the mounting holes are distributed in groups on the surface of the rigid motherboard 11; generally, three or four are grouped together. The center of the connecting line of the centers of the groups of mounting holes surrounding the same aviation plug 5 is the same as the center of the aviation plug 5. A reinforcing bracket 53 adapted to the mounting holes is provided on the edge of the base 51, and the reinforcing bracket 53 is arranged coaxially with the mounting holes in the longitudinal direction. Screws 54 are provided at the top of the reinforcing bracket 53 to fix the aviation plug 5, so that the base 51 of the aviation plug 5 is arranged parallel to the rigid motherboard 11.

[0035] Using screw 54 to secure the aviation connector 5 makes the entire aviation connector more securely mounted on the PCB board, which is more suitable for use in harsh aviation environments compared to the existing solution of soldering the aviation connector to the PCB board.

[0036] To ensure the rigid motherboard is securely fixed and connected to other related components, and to enhance the overall stability of the PCB board installation, this embodiment preferably includes a rigid motherboard 11 comprising a rigid body 111 and a transition plate 112 connected to one side of the rigid body. A stepped opening 6 is provided at the connection between the rigid body 111 and the transition plate 112 to provide clearance for installation. Both the rigid body 111 and the transition plate 112 are rectangular plates, and the transition plate 112 is staggered on one side of the rigid body 111. In this embodiment, one side of the stepped opening 6 has an L-shaped structure, and the other side is a combination of folded sections.

[0037] The rigid motherboard 1 in this embodiment is also provided with aviation plug soldering hole 7. The aviation plug 5 is connected to the aviation plug soldering hole 7 and is soldered by wave soldering.

[0038] This utility model's multifunctional adjustable PCB board utilizes a hot-melt rigid board and flexible board connection method that avoids traditional crimping or terminal cable connection methods. Traditional crimping methods cannot solve the problems of low air pressure, mold, salt spray, and humid environments; they can only address vibration environments because they cannot achieve a complete seal. Traditional terminal cable connection methods increase the number of connection points between boards, and the more connection points, the greater the risk. The hot-melt rigid board and flexible board connection method perfectly avoids the shortcomings of traditional connection boards, greatly improving product reliability and lifespan. Furthermore, the number of signal transmissions can be increased by expanding the soldering holes, significantly reducing usage and upgrade costs.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the present utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of the present utility model.

Claims

1. A multi-functional adjustable PCB board comprising a hard plate (1) and a soft plate (2), characterized in that, The hard board (1) is provided with a mounting position of the aviation plug (5), and one side of the hard board (1) is provided with an expansion connector mounting hole, which can be used for mounting system upgrade expansion to add one or N signal transmission sub-boards (9) for expansion; the hard board (1) and the soft board (2) are arranged at intervals to adjust the positional relationship between the hard boards.

2. The multi-functional adjustable PCB board according to claim 1, wherein, The hard board (1) comprises a hard board main board (11) provided with the aviation plug (5) and a hard board sub-board (12) arranged on one side of the hard board main board (11); the mounting position comprises a plurality of mounting holes (3) arranged on the hard board main board (11) and used for reinforcing mounting and dismounting the aviation plug (5).

3. The multi-functional adjustable PCB board according to claim 2, wherein, The hard board main board (11) comprises a hard board main body (111) and a transition plate (112) connected to one side of the hard board main body, and a stepped opening (6) is arranged at the connection position of the hard board main body (111) and the transition plate (112) to provide a space for installation.

4. The multi-functional adjustable PCB board according to claim 3, wherein, The hard board main body (111) and the transition plate (112) are both rectangular plates, and the transition plate (112) is arranged on one side of the hard board main body (111) in a staggered manner.

5. The multi-functional adjustable PCB board according to claim 4, wherein, The aviation plug (5) is connected to the hard board main board (1) through a mounting reinforcing support (53) to improve the reliability in a harsh impact and vibration environment.

6. The multi-functional adjustable PCB board according to claim 5, wherein, The hard board main board (1) is further provided with an aviation plug welding hole (7), the aviation plug (5) is connected to the aviation plug welding hole (7), and welding is performed through a wave crest.

7. The multi-functional adjustable PCB board according to claim 6, wherein, The expansion connector mounting hole is arranged on the side away from the aviation plug (5); the hard board main board (11) and the hard board sub-board (12) are both provided with the signal transmission sub-boards (9), and the adjacent signal transmission sub-boards (9) are symmetrically distributed on both sides of the soft board (2).

8. The multi-functional adjustable PCB board according to any one of claims 1-7, wherein, The hard board (1) and the soft board (2) are connected as a whole through hot melting, and the overall connection forms a completely sealed connection surface.

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