Adjustable PCB

Abstract

The utility model relates to the technical field of circuit boards, in particular to an adjustable PCB (printed circuit board), which comprises a hard board and a flexible board, the hard board and the flexible board are arranged at an interval, and the hard board comprises a hard board main board provided with an aviation plug and a hard board auxiliary board arranged on one side of the hard board main board; a plurality of mounting holes are formed in the hard board main board and are used for mounting and dismounting aviation plugs; the hard board auxiliary board at least comprises a special-shaped structure, and 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. The hard board and the flexible board are combined, and reasonable installation is achieved by utilizing a limited space; meanwhile, the hard board is arranged to be of a special-shaped structure, the structure of the hard board can be adjusted according to different installation positions of other structures, and different avoiding structures are formed; through the connection of the flexible plates, the angle of each hard plate can be adjusted to a state required by installation. Moreover, under the condition of violent vibration, the service life of the PCB is long, and the PCB is not easy to damage.

Description

Technical Field

[0001] This utility model relates to the field of high-speed signal transmission circuit board technology, and more specifically, to an adjustable PCB board. Background Technology

[0002] The structural characteristics of a PCB mainly include its layered structure and the functions of each component. The basic structure of a PCB typically includes conductive layers, insulating layers, and vias. Conductive layers are usually made of copper foil and are responsible for conducting electricity; insulating layers are made of non-conductive materials, such as FR-4 (epoxy fiberglass board), and are used to isolate the conductive layers; vias are used to connect circuits on different layers.

[0003] Aviation connectors are electromechanical components used to connect electrical circuits. Contact pressure is a crucial indicator in aviation connectors, directly affecting contact resistance and wear on the contact pairs. Aviation connectors generally consist of a plug and a socket; the plug is also called a free-end aviation connector, and the socket is called a fixed aviation connector. Connecting and disconnecting circuits is achieved through the plug and socket's engagement and disengagement. Currently, the connection between existing aviation connectors and PCB boards is typically soldered as a single unit. If one component fails, the entire electrical connection must be replaced, resulting in waste.

[0004] The current aerospace industry is highly developed, and aircraft utilize a large number of integrated circuits. The reliability of the connections between these integrated circuits is a critical concern, as the failure of even a single electrical connection could lead to a flight accident. It is well known that aircraft generate significant impact vibrations during takeoff and landing, and are also subject to severe vibrations from airflow during flight. Therefore, ensuring shock and vibration protection for circuit connections is a primary issue that must be considered and addressed.

[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] CN202111348669.6 discloses a servo motor, a cryogenic servo motor controller, and a small-space asymmetric PCB structure thereof. The PCB structure includes multiple rigid circuit boards, which are sequentially connected by flexible circuit boards. The flexible circuit boards between adjacent rigid circuit boards are bent to stack the rigid circuit boards and space them apart. The rigid circuit boards are relatively fixed by mounting components. The above PCB structure adopts a rigid-flex composite structure. Compared with the existing pure rigid circuit board bonding method, the structure can reduce bonding wires, solder joints, and labor time, save installation time, and reduce weight. By installing them as a single component, the crossover of signal lines between boards is reduced, which greatly reduces the possibility of worker errors during bonding operations.

[0007] The connection between the flexible link and the rigid circuit board in the above structure is not reliable enough and is not suitable for use in the limited space conditions required for aviation plug installation. Furthermore, it does not address the issue of shock and vibration resistance for the circuit connections.

[0008] Existing aviation connectors are generally used in environments with strong vibration and low air pressure. They are typically connected by plugging, welding, or bolting between flexible and rigid boards. Under conditions of large amplitude and high frequency of vibration, they are prone to loosening, and their reliability cannot be guaranteed.

[0009] Therefore, disclosing an adjustable PCB board that effectively connects a rigid circuit board and a flexible conductive board, ensuring reliability in use, is of great significance to actual production. Utility Model Content

[0010] This invention addresses the shortcomings of existing technologies by providing an adjustable PCB board that combines rigid and flexible boards, enabling efficient installation within limited space. Furthermore, the rigid board's irregular shape allows for adjustment based on the installation position of other components, creating various clearance structures. The flexible board connection allows for adjustment of the angles of each rigid board to the desired installation position. Moreover, the PCB board exhibits a long service life and is less prone to damage even under severe vibration.

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

[0012] An adjustable PCB board is disclosed, comprising a rigid board and a flexible board, wherein the rigid board and the flexible board are spaced apart. The rigid board comprises a main rigid board for mounting aviation connectors and a secondary rigid board disposed on one side of the main rigid board. The main rigid board has a plurality of mounting holes for mounting and dismounting the aviation connectors. The secondary rigid board includes at least one irregularly shaped structure. Adjusting the flexible board between the main rigid board and the secondary rigid board adjusts 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, a completely sealed connection surface is formed, with the rigid board and flexible board joined together by heat fusion. 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.

[0015] Furthermore, the rigid motherboard has an overall rectangular structure, and the mounting holes are distributed in groups on the surface of the rigid motherboard.

[0016] Furthermore, the mounting holes are through holes, and a group of mounting holes surrounds the same circumference of the aviation connector. The center of the connecting line between the centers of the mounting holes in the same group is 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 solutions that solder the aviation connector to the PCB board.

[0017] Furthermore, the aviation plug includes a base located near the hardboard motherboard, and a fixed socket is provided above the base for connecting electromechanical components of external electrical circuits.

[0018] Furthermore, the base is a rectangular plate with a through hole in the center, and the base is arranged parallel to the rigid motherboard. This structure enables effective cable connection, and its aviation plug structure is adjustable as needed, making it more versatile.

[0019] Furthermore, the base has support studs on its edge that mate with the mounting holes, and these support studs are longitudinally coaxial with the mounting holes. This structural design effectively secures the aviation connector, making the entire aviation connector more firmly mounted on the PCB board. Compared to existing solutions that solder the aviation connector to the PCB board, this design is more suitable for use in harsh aviation environments.

[0020] Furthermore, a positioning groove is provided on one side of the rigid motherboard. This groove is for fixing the rigid motherboard and connecting it with other related components, thus enhancing the overall stability of the PCB board installation.

[0021] Furthermore, the rigid sub-board includes a first side end connected to the flexible board, and a second side end is provided on the opposite side of the first side end. The width of the first side end is greater than the width of the second side end. The connection between the first side end and the second side end is composed of a combination of straight edge segments and inclined edge segments. This structure allows the rigid sub-board to be configured as an irregularly shaped avoidance structure, which does not interfere with the connection and use of other electrical components.

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

[0023] The adjustable PCB board disclosed in this utility model combines a rigid board and a flexible board, and improves the bonding performance of the entire board through hot melt pressing; and sets the aviation plug 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.

[0024] The adjustable PCB board disclosed in this utility model serves as an insulating mounting plate, supporting and positioning the contacts to ensure insulation performance between them. Its mounting holes provide mechanical protection, ensuring alignment of the aviation plug and socket during mating and securing the connector to the equipment. It has a wide range of applications, especially suitable for harsh environments with strong vibrations and low air pressure. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the overall structure of the adjustable PCB board described in this utility model.

[0027] Figure 2 This is a schematic diagram showing the connection between the rigid board and the flexible board of the adjustable PCB board described in this utility model.

[0028] Among them, 1-rigid board, 11-rigid board main board, 12-rigid board secondary board, 2-flexible board, 21-side end one, 22-side end two, 3-mounting hole, 5-aviation plug, 51-base, 52-fixed socket, 53-support stud, 54-screw, 6-positioning groove. Detailed Implementation

[0029] 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

[0030] like Figures 1-2As shown, the 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 an aviation connector 5 and a secondary rigid board 12 disposed on one side of the main rigid board 11. The main rigid board 11 is provided with a plurality of mounting holes 3 for mounting and dismounting the aviation connector 5. The secondary rigid board includes at least one irregularly shaped structure. The positional relationship between the rigid boards can be adjusted by adjusting the flexible board 2 between the main rigid board 11 and the secondary rigid board 12.

[0031] 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.

[0032] 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 pressed together with the edge of the rigid board 1 under high temperature, and then sealed with glue at the joint. The pressing and full sealing of the rigid board 1 and the flexible board 3 ensures that the entire PCB board does not oxidize or leak air, resulting in good performance. The overall connection forms a completely sealed connection surface, and the rigid board and the flexible board are further sealed with high-performance silicone, ensuring that the transmission signal lines between the rigid board and the flexible board are not affected by oxidation or mold caused by external low air pressure, salt spray, or mold environments, thus protecting the electrical transmission and preventing electrical safety hazards caused by high-density wiring in low air pressure environments.

[0033] In this embodiment, the rigid motherboard 11 has a rectangular structure, and the mounting holes 3 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 3 surrounding the same aviation plug 5 is the same as the center of the aviation plug 5. The edge of the base 51 is provided with support studs 53 that are adapted to the mounting holes 3, and the support studs 53 are arranged coaxially with the mounting holes 3 in the longitudinal direction. Screws 54 are provided at the top of the support studs 53 to fix the aviation plug 5, so that the base 51 of the aviation plug 5 is parallel to the rigid motherboard 11. The aviation plug 5 is mounted on the rigid motherboard 1 through the mounting reinforcement bracket 53, which plays a reliable role in harsh impact and vibration environments; the pins of the aviation plug 5 are connected to the aviation plug soldering holes on the rigid motherboard 1 and are soldered by wave soldering.

[0034] 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.

[0035] To ensure the rigid motherboard is securely fixed and connected to other related components, and to enhance the overall stability of the PCB board, a positioning groove 6 is provided on one side of the rigid motherboard 11. This means that the positioning groove 6 can be provided as needed on any edge of the non-flexible board mounting surface.

[0036] In this embodiment, the rigid main board 11 is preferably a rectangular structure. The rigid secondary board 12 includes a side end 21 connected to the flexible board 2, and a side end 22 is provided on the opposite side of the side end 21. The width of the side end 21 is greater than the width of the side end 22. The connection between the side end 21 and the side end 22 is composed of a straight edge segment and a beveled edge segment 23. In this embodiment, the width of the side end 21 is greater than the width of the connection end between the rigid main board 11 and the flexible board 2. The connection segment between the side end 21 and the side end 22 has a straight edge segment on one side and a combination of a straight edge segment and a beveled edge segment 23 on the other side. The straight edge segment and the beveled edge segment 23 form a clearance structure, which can avoid interfering with the connection and use of other electrical components. The beveled edge segment 23 can also be a curved surface segment.

[0037] The adjustable PCB board disclosed in this utility model serves as an insulating mounting plate, supporting and positioning the contacts to ensure insulation performance between them. Its mounting holes provide mechanical protection, ensuring alignment of the aviation plug and socket during mating and securing the connector to the equipment. It has a wide range of applications, especially suitable for harsh environments with strong vibrations and low air pressure.

[0038] 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. An adjustable PCB board comprising a hard plate (1) and a soft plate (2), said hard plate (1) and soft plate (2) being arranged at a distance, characterized in that, The hard board (1) comprises a hard board main plate (11) on which the aviation plug (5) is mounted and a hard board auxiliary plate (12) arranged on one side of the hard board main plate (11); the hard board main plate (11) is provided with a plurality of mounting holes (3) for mounting and dismounting the aviation plug (5); the hard board auxiliary plate comprises at least one special-shaped structure, and the position relationship between the hard board main plate (11) and the hard board auxiliary plate (12) is adjusted by adjusting the flexible plate (2) between the hard board main plate (11) and the hard board auxiliary plate (12).

2. The adjustable PCB board of claim 1, wherein, A completely sealed connecting surface is formed between the hard board and the flexible plate, and the hard board and the flexible plate are integrated by hot melting.

3. The adjustable PCB board of claim 2, wherein, The hard board main plate (11) is in a rectangular structure, and the mounting holes (3) are distributed in groups on the surface of the hard board main plate (11).

4. The adjustable PCB board of claim 3, wherein, The mounting holes (3) are through holes, and the mounting holes (3) in the same group are circumferentially surrounded by the same aviation plug (5), and the center of the connecting line of the centers of the mounting holes (3) in the same group is the same as the center of the aviation plug (5).

5. The adjustable PCB board of claim 4, wherein, The aviation plug (5) comprises a base (51) arranged on the side close to the hard board main plate (11), and a fixed socket (52) is arranged above the base (51) for connecting the electrical elements of the mechanical and electrical elements.

6. The adjustable PCB board of claim 5, wherein, The base (51) is a rectangular plate with a through hole arranged at the center, and the base (51) is arranged in parallel with the hard board main plate (11).

7. The adjustable PCB board of claim 6, wherein, The edge of the base (51) is provided with a supporting stud (53) matched with the mounting hole (3), and the supporting stud (53) is arranged in longitudinal coaxial with the mounting hole (3).

8. The adjustable PCB board according to any one of claims 1-7, wherein, The side of the hard board main plate (11) is provided with a positioning groove (6).

9. The adjustable PCB board of claim 8, wherein, The hard board auxiliary plate (12) comprises a side edge end one (21) connected with the flexible plate (2), a side edge end two (22) arranged on the opposite side of the side edge end one (21), and the width of the side edge end one (21) is greater than the width of the side edge end two (22); the side edge end one (21) and the side edge end two (22) are combined by a straight edge segment and an inclined edge segment.

Images