Flame-retardant circuit board

Abstract

The utility model relates to the technical field of circuit boards. More specifically, the utility model relates to a flame-retardant circuit board, which comprises a frame, a first circuit board, a second circuit board, a square frame, a rubber ring, a liquid injection unit and a gas injection unit. A first circuit board is fixedly connected to the frame. A second circuit board is fixedly connected to the frame. The frame is fixedly connected with at least two square frames; rubber rings are fixedly connected among all the square frames; after any position of the circuit board I and the circuit board II is burnt through to form the through hole, the flame-retardant liquid flows out from the through hole to extinguish flame, and meanwhile, the rubber ring expands towards the inner side to apply thrust to the flame-retardant liquid, so that the speed of the flame-retardant liquid flowing out from the through hole is increased, the fire extinguishing effect is enhanced, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, and more specifically, to a flame retardant circuit board. Background Art

[0002] Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] Due to the rapid development of power electronics technology, the integration of high-power components is getting higher and higher, the power density is getting higher and higher, and the heat generated during operation is also getting higher and higher. When multiple components are overloaded for a long time, the heat dissipation mechanism on the circuit board chassis cannot dissipate the heat in time, causing the circuit board to spontaneously combust, posing a huge safety hazard. Utility Model Content

[0004] In order to overcome the disadvantage that the heat dissipation mechanism on the circuit board chassis cannot dissipate the heat in time, resulting in the circuit board spontaneous combustion and posing a great safety hazard, the utility model provides a flame retardant circuit board.

[0005] Technical solution: A flame-retardant circuit board, comprising a frame, circuit board one, circuit board two, a square frame, a rubber ring, a liquid injection unit and a gas injection unit; circuit board one is fixedly connected to the frame; circuit board two is fixedly connected to the frame; at least two square frames are fixedly connected to the frame; a rubber ring is commonly fixedly connected between all the square frames; circuit board one is connected to a liquid injection unit, the liquid injection unit is used to inject liquid into the gap between circuit board one and circuit board two; the frame is connected to a gas injection unit, the gas injection unit is used to inject gas into the inner side of the frame.

[0006] Furthermore, the gas injection unit includes a pipeline 1 and a one-way valve 1; the pipeline 1 is passed through the frame; and the one-way valve 1 is installed on the pipeline 1.

[0007] Furthermore, the liquid injection unit includes a second pipe and a second one-way valve; the second pipe is passed through the first circuit board; and the second one-way valve is installed on the second pipe.

[0008] Furthermore, it also includes a limiting frame; each square frame is fixedly connected to a limiting frame.

[0009] Furthermore, it also includes a cylinder; a plurality of cylinders are fixedly connected between the circuit board 1 and the circuit board 2.

[0010] Furthermore, it also includes a connecting block; at least two connecting blocks are fixedly connected to the frame.

[0011] The beneficial effects are:

[0012] 1. After the through holes are formed at any positions of the circuit board 1 and the circuit board 2, the flame retardant liquid flows out from the through hole, thereby extinguishing the flame. At the same time, the pressure on the inner side of the rubber ring due to the flame retardant liquid is reduced, so that the inert gas inside the frame pushes the rubber ring from the outside to move, thereby expanding the rubber ring inward, applying thrust to the flame retardant liquid, and accelerating the speed at which the flame retardant liquid flows out of the through hole, thereby enhancing the fire extinguishing effect and improving safety;

[0013] 2. The expanded rubber ring is limited by a limit frame to prevent the expanded rubber ring from contacting the first circuit board and the second circuit board, thereby preventing the through hole from being blocked and further preventing the flame retardant liquid from flowing out;

[0014] 3. Circuit board 1 and circuit board 2 are reinforced by cylinders to prevent circuit board 1 and circuit board 2 from being bulged and deformed due to excessive pressure from the flame retardant liquid, which is beneficial to improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure diagram of the flame retardant circuit board of the utility model is shown;

[0016] Figure 2 The structure diagram of the circuit board 2 of the utility model is shown;

[0017] Figure 3 The schematic diagram of the structure of the gas injection unit and the liquid injection unit combination of the utility model is shown;

[0018] Figure 4 The schematic diagram of the structure of the cylinder of the utility model is shown.

[0019] Figure numbers: 1-frame, 2-circuit board 1, 3-circuit board 2, 4-square frame, 5-rubber ring, 6-pipeline 1, 7-check valve 1, 8-pipeline 2, 9-check valve 2, 10-limiting frame, 11-cylinder, 12-connecting block. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] A flame retardant circuit board, such as Figure 1-Figure 4As shown, it includes a frame 1, a circuit board 1 2, a circuit board 2 3, a square frame 4, a rubber ring 5, a liquid injection unit and a gas injection unit; the circuit board 1 2 is bolted to the frame 1, and the frame 1 is set to be an alloy material; the circuit board 2 3 is bolted to the frame 1; two square frames 4 are fixed to the frame 1; a rubber ring 5 is commonly fixed between all the square frames 4; the circuit board 1 2 is connected to the liquid injection unit, and the liquid injection unit is used to inject liquid into the gap between the circuit board 1 2 and the circuit board 2 3; the frame 1 is connected to the gas injection unit, and the gas injection unit is used to inject gas into the inner side of the frame 1.

[0023] The gas injection unit includes a pipeline 6 and a one-way valve 7; a pipeline 6 is passed through the frame 1, and gas is input into the inner side of the frame 1 through the pipeline 6; a one-way valve 7 is installed on the pipeline 6.

[0024] The liquid injection unit includes a pipe 28 and a one-way valve 29; a pipe 28 is provided on the circuit board 1 2, and liquid is input into the gap between the circuit board 1 2 and the circuit board 2 3 through the pipe 28; a one-way valve 29 is installed on the pipe 28.

[0025] It also includes a limiting frame 10; each square frame 4 is welded with a limiting frame 10, and the expanding rubber ring 5 is limited by the limiting frame 10.

[0026] It also includes a cylinder 11; a plurality of cylinders 11 are fixedly connected between the circuit board 1 2 and the circuit board 2 3, and the cylinders 11 are used to reinforce the circuit board 1 2 and the circuit board 2 3.

[0027] It also includes a connecting block 12; two connecting blocks 12 are welded on the frame 1.

[0028] First, connect the external gas pipe to pipeline 1 6, connect the external liquid pipe to pipeline 2 8, deliver inert gas to pipeline 1 6 through the external gas pipe, the inert gas flows into the inside of frame 1 through one-way valve 1 7, deliver flame retardant liquid to pipeline 2 8 through the external liquid pipe, the flame retardant liquid flows into the gap between circuit board 1 2 and circuit board 2 3 through one-way valve 2 9, at this time, the inner side of rubber ring 5 is subjected to the pressure of flame retardant liquid, the outer side of rubber ring 5 is subjected to the pressure of inert gas, and the two pressure values ​​tend to balance When the circuit board 1 2 and the circuit board 2 3 spontaneously combust, after any position of the circuit board 1 2 and the circuit board 2 3 is burned through to form a through hole, the flame retardant liquid flows out from the through hole position, thereby extinguishing the flame. At the same time, the pressure on the inner side of the rubber ring 5 due to the flame retardant liquid is reduced, so that the inert gas on the inner side of the frame 1 pushes the rubber ring 5 from the outside to move, so that the rubber ring 5 expands inward, applies thrust to the flame retardant liquid, and accelerates the speed at which the flame retardant liquid flows out of the through hole, thereby enhancing the fire extinguishing effect and helping to improve safety.

[0029] If the through hole formed by burning is close to the edge of circuit board 1 2 or circuit board 2 3, the rubber ring 5 will block the through hole after expansion, thereby interfering with the outflow of the flame retardant liquid. Therefore, the expanded rubber ring 5 is limited by the limit frame 10 to prevent the expanded rubber ring 5 from contacting circuit board 1 2 and circuit board 2 3, thereby avoiding blocking the through hole and further avoiding interfering with the outflow of the flame retardant liquid.

[0030] When circuit board 1 2 and circuit board 2 3 are in normal use, the cylinder 11 reinforces circuit board 1 2 and circuit board 2 3 to prevent circuit board 1 2 and circuit board 2 3 from being bulged and deformed due to excessive pressure from the flame retardant liquid, which is beneficial to improving stability.

[0031] During installation, the connection block 12 can be fixed to the chassis using bolts to achieve convenient installation.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flame retardant circuit board, characterized in that: The invention comprises a frame (1), a circuit board 1 (2), a circuit board 2 (3), a square frame (4), a rubber ring (5), a liquid injection unit and a gas injection unit; the frame (1) is fixedly connected to the circuit board 1 (2); the frame (1) is fixedly connected to the circuit board 2 (3); the frame (1) is fixedly connected to at least two square frames (4); a rubber ring (5) is commonly fixedly connected between all the square frames (4); the circuit board 1 (2) is connected to the liquid injection unit, and the liquid injection unit is used to inject liquid into the gap between the circuit board 1 (2) and the circuit board 2 (3); the frame (1) is connected to the gas injection unit, and the gas injection unit is used to inject gas into the inner side of the frame (1).

2. The flame retardant circuit board according to claim 1, characterized in that: The gas injection unit comprises a pipeline (6) and a one-way valve (7); the pipeline (6) is passed through the frame (1); and the one-way valve (7) is installed on the pipeline (6).

3. The flame retardant circuit board according to claim 2, characterized in that: The liquid injection unit comprises a second pipe (8) and a second one-way valve (9); the second pipe (8) is passed through the first circuit board (2); and the second one-way valve (9) is installed on the second pipe (8).

4. The flame retardant circuit board according to claim 3, characterized in that: It also includes a limiting frame (10); each square frame (4) is fixedly connected to a limiting frame (10).

5. The flame retardant circuit board according to claim 4, characterized in that: It also includes a cylinder (11); a plurality of cylinders (11) are fixedly connected between the circuit board 1 (2) and the circuit board 2 (3).

6. A flame retardant circuit board according to any one of claims 3 to 5, characterized in that: It also includes a connecting block (12); at least two connecting blocks (12) are fixedly connected to the frame (1).

Images