CN217509112U - FPC circuit board - Google Patents

Abstract

The utility model discloses a FPC circuit board relates to circuit board technical field, including circuit board main part, circuit board main part top can be dismantled and be connected with the shield, the inserted bar is all installed to the four corners department of roof in the shield, circuit board main part top surface four corners department all installs the inserted block, the slot has been seted up to the inside of inserted block, the inserted bar is pegged graft in the inside of slot, the shield middle part is equipped with the gas vent, the internally mounted of gas vent has radiator fan, the all global and the equal cladding in bottom surface of circuit board main part have heat conduction insulation layer. The utility model discloses in, can derive the heat dissipation with the heat that produces when circuit board main part moves, and possess ventilation cooling and exhaust radiating function, improved the radiating efficiency, satisfy circuit board heat dissipation demand, the easy access personnel overhauls the circuit board simultaneously.

Description

An FPC circuit board

technical field

The utility model relates to the technical field of circuit boards, in particular to an FPC circuit board.

Background technique

FPC, also known as flexible circuit board, is favored for its excellent characteristics such as light weight, thin thickness, and free bending and folding. It is made of polyester film or polyimide as a base material with high reliability. , The printed circuit with excellent flexibility, by embedding the circuit design on the flexible thin plastic sheet, in order to avoid the installed components from being affected by dust, dust-proof treatment is often required, but the dust-proof treatment of the existing device is neither convenient Loading and unloading will cause the processing elements to be unable to quickly dissipate heat in a closed state.

The existing patent (announcement number: CN211352946U) proposes an FPC circuit board, which includes a circuit board main body, assembly blocks are glued on both sides of the circuit board main body, and an assembly guide groove is opened inside the assembly block. The inner upper surface is injection-molded with a fastening threaded column, and the top of the assembly block is slidably connected with a dust-proof and heat-dissipating guard plate structure. The clamping frame, the cooling fan and the charging lead-in end, the two ends of the dust-proof top cover are stamped and formed with extended assembly wing guards, and the interior of the dust-proof top cover is provided with a plurality of positioning and assembly holes, the top and bottom of the positioning and assembly holes are both A matching clamping frame is clamped. The utility model adds a dust-proof and heat-dissipating guard plate on the circuit board, which is easy to assemble and disassemble, so that the device can reduce the aging caused by the dust contacting the circuit and the components, and can help the main components to rapidly dissipate heat and cool down.

The above circuit boards have the following disadvantages in use: the dust-proof top cover is connected by bolts, which is inconvenient to disassemble. When the circuit board needs to be repaired, it is inconvenient for the maintenance personnel to disassemble the dust-proof top cover, which reduces the maintenance efficiency, and Only through the cooling fan for heat dissipation, there is a problem of low heat dissipation efficiency, and it is difficult to meet the heat dissipation requirements of the circuit board. To this end, we propose an FPC circuit board to solve the above problems.

Utility model content

The utility model provides an FPC circuit board, which solves the problem that the dust-proof top cover is connected by bolts and is inconvenient to disassemble. When the circuit board needs to be repaired, it is inconvenient for the maintenance personnel to disassemble the dust-proof top cover, which reduces the maintenance efficiency. , and the heat dissipation is only carried out by the heat dissipation fan, which has the problem of low heat dissipation efficiency and the technical problem that it is difficult to meet the heat dissipation requirements of the circuit board.

In order to solve the above technical problems, the utility model provides an FPC circuit board, comprising a circuit board main body, the top of the circuit board main body is detachably connected with a dust cover, and the four corners of the inner top wall of the dust cover are installed with Inserting rod, inserting blocks are installed at the four corners of the top surface of the main body of the circuit board, a slot is opened inside the inserting block, the inserting rod is inserted into the interior of the slot, and a row is arranged in the middle of the dust cover The air outlet is provided with a cooling fan inside the air outlet, and the surrounding surface and the bottom surface of the circuit board main body are covered with a thermally conductive insulating layer.

Preferably, the front and rear side walls of the thermally conductive insulating layer and the inside of the circuit board main body are provided with through grooves that communicate with each other, which reduces the overall weight of the thermally conductive insulating layer and the circuit board main body, and realizes the lightweight design of the circuit board main body. The groove can make the ventilation effect of the thermally conductive insulating layer and the main body of the circuit board better, facilitate the air circulation, and then achieve the effect of ventilation and heat dissipation.

Preferably, a dust-proof net is fixedly installed inside the exhaust port, and the dust-proof net is arranged above the cooling fan to play a dust-proof effect and prevent dust from invading.

Preferably, both sides of the top of the dust cover are provided with buckle grooves, and the two buckle grooves are arranged symmetrically, which is convenient for maintenance personnel to pull the dust cover to move upward, thereby facilitating the disassembly of the dust cover.

Preferably, an elastic pad is installed on the inner wall of the slot, the elastic pad is made of rubber, and the rubber material has a certain elastic deformation ability, which can squeeze the insertion rod and prevent the insertion rod from shaking inside the slot. At the same time, the friction force between the insertion rod and the slot can be increased, and the stability of the insertion of the insertion rod can be improved.

Preferably, a first magnet is fixedly installed on the bottom of the insertion rod, a second magnet is fixedly installed on the inner bottom wall of the slot, the first magnet and the second magnet are magnetically attracted, and the first magnet and the second magnet are fixedly installed. The magnetic attraction of the magnet can improve the stability of the connection between the insertion rod and the insertion block.

Preferably, a thermally conductive silicone grease layer is provided between the main body of the circuit board and the thermally conductive insulating layer, the thickness of the thermally conductive silicone grease layer is 0.2 cm, the thermally conductive silicone grease is commonly known as thermally conductive grease, and the thermally conductive silicone grease is mainly made of silicone , Add materials with excellent heat resistance and thermal conductivity to make a thermally conductive silicone grease-like compound, which can dissipate the heat generated by the main body of the circuit board for heat dissipation, thereby ensuring the stability of the electrical performance of the main body of the circuit board.

Preferably, the thermally conductive insulating layer is bonded and fixed to the main body of the circuit board through an adhesive.

Compared with the related art, the FPC circuit board provided by the utility model has the following beneficial effects:

2. In this utility model, the heat-conducting insulating layer and the heat-conducting silicone grease layer are arranged to play a good passive heat dissipation effect, and the heat generated when the main body of the circuit board is running can be dissipated and dissipated. The overall weight of the main body of the circuit board realizes the lightweight design of the main body of the circuit board. At the same time, the opening of the through groove can make the thermal insulation layer and the main body of the circuit board better ventilate, facilitate air circulation, and then achieve the effect of ventilation and heat dissipation. The fan can quickly discharge the heat of the circuit board body, improve the heat dissipation efficiency, and meet the heat dissipation requirements of the circuit board.

. In the present utility model, the dust cover can be fixed by inserting the rod into the slot, which facilitates the installation of the dust cover, and the buckle grooves provided on the dust cover are convenient for maintenance personnel to pull the dust cover and install it. It is convenient for the disassembly of the dust cover, so as to facilitate the maintenance personnel to repair the main body of the circuit board.

Description of drawings

Fig. 1 is the structural representation of a kind of FPC circuit board;

Fig. 2 is a kind of cross-sectional structure schematic diagram of FPC circuit board;

3 is a schematic structural diagram of a thermally conductive insulating layer in a FPC circuit board;

FIG. 4 is an enlarged view of the result at A in FIG. 2 .

Labels in the figure: 1. Thermal insulation layer; 2. Main body of circuit board; 3. Thermal grease layer; 4. Through slot; 5. Dust cover; 6. Buckle slot; 7. Exhaust port; 9. Dust filter; 10. Insert rod; 11. Insert block; 12. Slot; 13. First magnet; 14. Second magnet.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper" and "lower" are involved , "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise" The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation is therefore not to be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Disconnect the connection, or connect it in one piece. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Embodiment 1, as shown in Figures 1-4, an FPC circuit board, including a circuit board main body 2, a dust cover 5 is detachably connected to the top of the circuit board main body 2, and the dust cover 5 is installed at the four corners of the inner top wall. There are inserting rods 10, and inserting blocks 11 are installed at the four corners of the top surface of the circuit board main body 2. The interior of the inserting block 11 is provided with a slot 12, the inserting rod 10 is inserted into the interior of the slot 12, and the middle of the dust cover 5 is provided with The exhaust port 7 is provided with a cooling fan 8 inside the exhaust port 7 , and the surrounding surface and the bottom surface of the circuit board main body 2 are covered with a thermally conductive insulating layer 1 .

In the second embodiment, on the basis of the first embodiment, the front and rear side walls of the thermally conductive insulating layer 1 and the inside of the circuit board main body 2 are provided with through grooves 4 that communicate with each other, which reduces the overall weight of the thermally conductive insulating layer 1 and the circuit board main body 2 and realizes The lightweight design of the circuit board body 2 and the opening of the through grooves 4 at the same time can improve the ventilation effect between the thermally conductive insulating layer 1 and the circuit board body 2, facilitate air circulation, and thus achieve the effect of ventilation and heat dissipation.

Embodiment 3, on the basis of Embodiment 1, a dustproof net 9 is fixedly installed inside the exhaust port 7, and the dustproof net 9 is arranged above the cooling fan 8, which has a dustproof effect and prevents dust from invading.

Embodiment 4, on the basis of Embodiment 1, both sides of the top of the dust cover 5 are provided with buckle grooves 6, and the two buckle grooves 6 are symmetrically arranged, which is convenient for maintenance personnel to pull the dust cover 5 to move upward, and then it is convenient for Remove the dust cover 5.

Embodiment 5, on the basis of Embodiment 1, an elastic pad is installed on the inner wall of the slot 12, the elastic pad is made of rubber, and the rubber material has a certain elastic deformation ability, which can squeeze the insertion rod 10 and prevent the insertion rod 10 When shaking occurs inside the slot 12 , the friction force between the insertion rod 10 and the slot 12 can be increased, and the stability of the insertion of the insertion rod 10 can be improved.

Embodiment 6, on the basis of Embodiment 1, a first magnet 13 is fixedly installed on the bottom of the insertion rod 10, a second magnet 14 is fixedly installed on the inner bottom wall of the slot 12, and the first magnet 13 and the second magnet 14 are magnetic The magnetic attraction of the first magnet 13 and the second magnet 14 can improve the stability of the connection between the insertion rod 10 and the insertion block 11 .

Embodiment 7, on the basis of Embodiment 1, a thermally conductive silicone grease layer 3 is provided between the circuit board main body 2 and the thermally conductive insulating layer 1, and the thickness of the thermally conductive silicone grease layer 3 is 0.2 cm. The silicone grease uses silicone as the main raw material, and adds materials with excellent heat resistance and thermal conductivity to make a thermally conductive silicone grease-like compound, which can dissipate the heat generated by the circuit board main body 2 during operation, thereby ensuring the circuit board. The electrical performance of the main body 2 is stable.

In the eighth embodiment, on the basis of the first embodiment, the thermally conductive insulating layer 1 is bonded and fixed to the circuit board main body 2 through an adhesive.

Working principle: The thermally conductive insulating layer 1 and the thermally conductive silicone grease layer 3 have a good passive heat dissipation effect, which can dissipate the heat generated when the circuit board main body 2 is running. The overall weight of 1 and the circuit board body 2 realizes the lightweight design of the circuit board body 2. At the same time, the opening of the through slot 4 can make the ventilation effect of the thermal insulation layer 1 and the circuit board body 2 better, which is convenient for air circulation. The effect of heat dissipation, by starting the heat dissipation fan 8, the heat of the circuit board body 2 can be quickly discharged, which improves the heat dissipation efficiency and meets the heat dissipation requirements of the circuit board. The dust cover 5 can prevent external dust from adhering to the circuit board body 2. In order to achieve a good dustproof effect, reduce the aging caused by dust contacting the circuit and components, the dustproof cover 5 can be fixed by inserting the rod 10 into the interior of the slot 12, which facilitates the installation of the dustproof cover 5. The buckle groove 6 provided on the dust cover 5 is convenient for maintenance personnel to pull the dust cover 5 and apply force, which facilitates the disassembly of the dust cover 5, and further facilitates maintenance personnel to perform maintenance on the circuit board main body 2. and the second magnet 14 are magnetically attracted, which can improve the stability of the connection between the insertion rod 10 and the insertion block 11. The elastic pad provided on the inner wall of the slot 12 can squeeze the insertion rod 10 to prevent the insertion rod 10 from being stuck in the slot 12. When the inside is shaken, the friction force between the insertion rod 10 and the socket 12 can be increased at the same time, and the stability of the insertion of the insertion rod 10 can be improved.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. An FPC circuit board, comprising a circuit board main body (2), characterized in that a dust cover (5) is detachably connected to the top of the circuit board main body (2), and an inner top of the dust cover (5) is detachably connected. Inserting rods (10) are installed at the four corners of the wall, inserting blocks (11) are installed at the four corners of the top surface of the circuit board main body (2), and slots (12) are opened inside the inserting blocks (11). , the insertion rod (10) is inserted into the interior of the slot (12), the dust cover (5) is provided with an exhaust port (7) in the middle, and a heat dissipation port (7) is installed inside the exhaust port (7). In the fan (8), the peripheral surface and the bottom surface of the circuit board main body (2) are covered with a thermally conductive insulating layer (1). 2 . The FPC circuit board according to claim 1 , wherein the front and rear side walls of the thermally conductive insulating layer ( 1 ) and the interior of the circuit board main body ( 2 ) are provided with interconnected through grooves ( 4 ). 3 . 3. A kind of FPC circuit board according to claim 1, is characterized in that, the inside of described exhaust port (7) is fixedly installed with dustproof net (9), and described dustproof net (9) is arranged in the heat dissipation Above the fan (8). 4. A FPC circuit board according to claim 1, characterized in that, both sides of the top of the dust cover (5) are provided with buckle grooves (6), and the two buckle grooves (6) are Symmetrical settings. 5 . The FPC circuit board according to claim 1 , wherein an elastic pad is installed on the inner wall of the slot ( 12 ), and the elastic pad is made of rubber. 6 . 6 . The FPC circuit board according to claim 1 , wherein a first magnet ( 13 ) is fixedly installed at the bottom of the insertion rod ( 10 ), and the inner bottom wall of the slot ( 12 ) is fixedly installed. 7 . A second magnet (14) is installed, and the first magnet (13) magnetically attracts the second magnet (14). 7 . The FPC circuit board according to claim 1 , wherein a thermally conductive silicone grease layer (3) is provided between the circuit board main body (2) and the thermally conductive insulating layer (1), and the thermally conductive silicon The thickness of the lipid layer (3) was 0.2 cm. 8 . The FPC circuit board according to claim 1 , wherein the thermally conductive insulating layer ( 1 ) is bonded and fixed to the circuit board main body ( 2 ) through an adhesive. 9 .

Images