High-temperature-resistant PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCBs (printed circuit boards), in particular to a high-temperature-resistant PCB which comprises a main frame used for mounting the PCB, a ventilation opening is formed in the end face of the main frame, the PCB is detachably connected to the ventilation opening through a quick release part, and a heat conduction silica gel pad is arranged between the PCB and the ventilation opening. According to the utility model, the PCB circuit board or the heat conduction silica gel pad can be quickly disassembled and assembled through the fixing piece, so that the normal use of the PCB board can be prevented from being influenced due to inconvenience in disassembly and assembly after the PCB board is used for a long time, the service life of the PCB board is prolonged, and the service life of the PCB board is prolonged. And dust can be adsorbed by utilizing an electrostatic dust collection plate, the heat dissipation efficiency of the PCB is improved in a disguised manner by reducing dust accumulation, the collected dust can be cleaned, and the PCB heat dissipation device is simple in structure, easy and convenient to operate and high in practicability.

Description

Technical Field

[0001] The utility model relates to the field of PCB circuit boards, in particular to a high temperature resistant PCB circuit board. Background Art

[0002] PCB circuit board is a basic material for installing and connecting electronic components. It is usually made of insulating materials such as fiberglass, epoxy resin or polyimide, covered with conductive copper foil to form a pattern of circuit connections. PCB circuit board plays a vital role in electronic devices. It can provide mechanical support, electrical connection and thermal management of electronic components.

[0003] In order to enable the PCB circuit board to work normally in a high temperature environment, a high temperature resistant PCB circuit board is needed. For example, the prior art Chinese patent announcement number "CN213462724U" discloses a high temperature resistant PCB board that is easy to remove dust, including a main frame and a connecting block, the four corners of the outer wall of the main frame are welded with limiting blocks, and the middle of the limiting block is penetrated with a limiting hole, the main frame and the fixing sleeve are fixed by fixing screws, and a positioning block is fixed at one end of the fixing sleeve close to the horizontal central axis of the main frame, the connecting block is fused to the inner left and right ends of the positioning block, and the outer wall of the connecting block is fitted with a thermal conductive silicone pad; and the prior art Chinese patent announcement number "CN213847113U" discloses a high temperature resistant PCB board, including a main board and an anti-collision mechanism.

[0004] In actual use, the PCB circuit board and the thermal conductive silicone pad need to be replaced or maintained after long-term use, so the PCB circuit board needs to be disassembled. Similar circuit boards are fixed by bolts and cannot be quickly disassembled and assembled, and there are no measures to clean the collected dust. The long-term accumulation of dust affects the normal use of the dust collecting plate and increases the difficulty of subsequent dust cleaning. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings of the prior art that it is inconvenient to disassemble and assemble the PCB circuit board and clean the dust, and to propose a high temperature resistant PCB circuit board.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high temperature resistant PCB circuit board is designed, comprising a main frame for mounting the PCB circuit board, an end surface of the main frame is provided with a vent, and the PCB circuit board is detachably connected to the vent through a quick release part, and a thermal conductive silicone pad is provided between the PCB circuit board and the vent;

[0008] Wherein, the end surface of the main frame is also provided with a dust removal component for collecting dust.

[0009] Furthermore, the quick-release component includes a step portion formed by extending inwardly from the inner wall of the vent, an extension portion is provided on the end face of the main frame located at the bottom side of the vent, an installation cavity is formed between the step portion and the extension portion, and the PCB circuit board is arranged in the installation cavity, and two sides of one end thereof are respectively in conflict with the step portion and the extension portion.

[0010] Furthermore, a fixing piece is slidably connected to the top of the main frame via a pair of guide columns, a limiting protrusion is fixedly installed on the other end of the guide column and is sleeved with a spring, both ends of the spring are respectively fixedly connected to the limiting protrusion and the side of the fixing piece, and the fixing piece can fix the other end of the PCB circuit board.

[0011] Furthermore, the dust removal component includes a mounting frame fixedly mounted on the end surface of the main frame, one end of the mounting frame is provided with a dust outlet and is plugged with a dust box, and deformation grooves are provided on both sides of the open end of the dust box.

[0012] Furthermore, a plurality of electrostatic dust collecting plates are provided in the installation frame through support rods, a connecting rod is slidably connected in the dust collecting box, one end of the connecting rod is fixedly connected to a rubber scraper, and the rubber scraper is tightly fitted to the inner wall of the installation frame.

[0013] Furthermore, the rubber scraper is provided with an avoidance groove at the center point, and is slidably connected to the support rod through the avoidance groove, and a sponge is provided on the inner wall of the avoidance groove.

[0014] The utility model proposes a high temperature resistant PCB circuit board, which has the beneficial effects that: the utility model can quickly disassemble and assemble the PCB circuit board or the thermal conductive silicone pad through the fixing part, which can prevent the normal use of the PCB board from being affected due to the inconvenience of disassembly and assembly after a long period of use, and can absorb dust by using the electrostatic dust collecting plate, thereby improving the heat dissipation efficiency of the PCB board in disguised form by reducing dust accumulation, and can also clean the collected dust, and has a simple structure, easy operation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the quick-release part of the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of area A;

[0018] Figure 4 It is a cross-sectional view of the dust removal component of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the installation frame of the utility model.

[0020] In the figure: 1. PCB circuit board; 2. main frame; 3. vent; 4. quick release part; 41. step part; 42. extension part; 43. guide column; 44. fixing part; 45. spring; 5. thermal conductive silicone pad; 6. dust removal part; 61. installation frame; 62. dust collection box; 63. deformation groove; 64. support rod; 64. support rod; 65. electrostatic dust collecting plate; 66. connecting rod; 67. rubber scraper. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A high temperature resistant PCB circuit board comprises a main frame 2 for mounting a PCB circuit board 1, a vent 3 is provided on the end surface of the main frame 2, and the PCB circuit board 1 is detachably connected to the vent 3 through a quick release part 4, and a thermal conductive silicone pad 5 is provided between the PCB circuit board 1 and the vent 3;

[0023] The end surface of the main frame 2 is also provided with a dust removal component 6 for collecting dust.

[0024] Furthermore, the quick-release component 4 includes a step portion 41 formed by extending inwardly from the inner wall of the vent 3, and an extension portion 42 is provided on the end surface of the main frame 2 located at the bottom side of the vent 3. An installation cavity is formed between the step portion 41 and the extension portion 42. The PCB circuit board 1 is arranged in the installation cavity, and the two sides of one end thereof are respectively in conflict with the step portion 41 and the extension portion 42.

[0025] It should be added that the thermally conductive silicone pad 5 is a prior art, and after being powered on, it cooperates with the vent 3 to dissipate heat for the PCB circuit board 1 through the effect of cooling and heat conduction, and the thermally conductive silicone pad 5 is arranged at the step portion 41, and is clamped and fixed by the step portion 41 and the PCB circuit board 1;

[0026] Wherein, a cooling fan can be arranged at the vent 3 according to actual conditions to improve the heat dissipation efficiency of the PCB circuit board.

[0027] Furthermore, the top of the main frame 2 is slidably connected to a fixing member 44 via a pair of guide columns 43. The other end of the guide column 43 is fixedly installed with a limiting protrusion and is sleeved with a spring 45. The two ends of the spring 45 are respectively fixedly connected to the limiting protrusion and the side of the fixing member 44. The fixing member 44 can fix the other end of the PCB circuit board 1.

[0028] It is worth mentioning that the fixing member 44 is in an L-shaped structure, and a rubber pad is provided on the side of one bent end thereof, and a lifting portion for pushing the fixing member 44 to move is extended from the other end of the fixing member 44 .

[0029] In more detail, the dust removal component 6 includes a mounting frame 61 fixedly mounted on the end surface of the main frame 2, one end of the mounting frame 61 is provided with an ash outlet and is plugged with a dust box 62, and the dust box 62 is provided with deformation grooves 63 on both sides of the open end.

[0030] It should be noted that the dust box 62 is made of elastic plastic, which is deformed to a certain extent by external force and can return to its original shape after the external force is removed. The material is, for example, silicone rubber, chloroprene rubber or thermoplastic elastomer.

[0031] The opening area of ​​the dust box 62 is slightly larger than the volume of the installation frame 61. When the dust box 62 is plugged in, the dust box 62 is affected by the interference and clamps the installation frame 61 under the action of the deformation groove 63 to achieve a fixing effect.

[0032] In general, a plurality of electrostatic dust collecting plates 65 are provided in the installation frame 61 through a support rod 64, a connecting rod 66 is slidably connected in the dust collecting box 62, one end of the connecting rod 66 is fixedly connected to a rubber scraper 67, and the rubber scraper 67 fits tightly against the inner wall of the installation frame 61.

[0033] Finally, the rubber scraper 67 is provided with an avoidance groove at the center point, and is slidably connected to the support rod 64 through the avoidance groove, and a sponge is provided on the inner wall of the avoidance groove.

[0034] Specifically, the electrostatic dust collecting plate 65 is an electrostatic precipitator or an electrostatic filter in the prior art, and a cavity is provided inside the support rod 64, and the electrostatic dust collecting plate 65 is connected to a power source by using the cavity;

[0035] The electrostatic dust collecting plate 65 absorbs dust to prevent dust accumulation, thereby improving the heat dissipation capacity of the PCB circuit board 1 in disguised form. The dust in the electrostatic dust collecting plate 65 and the mounting frame 61 is cleaned by pulling the rubber scraper 67.

[0036] In addition, the hole through which the dust box 62 and the connecting rod 66 slide has enough space to prevent the dust box 62 from falling off when the connecting rod 66 slides due to the tight contact with the connecting rod 66.

[0037] It should be noted that the bottom of the mounting frame 61 is connected to the main frame 2 via a convex ridge, and an inverted convex structure is formed between the mounting block 61 and the convex ridge. The advantage is that it provides a plug-in space for the dust box 62 to prevent the dust box 62 from conflicting with the main frame 2.

[0038] Working mode: When working, the PCB circuit board 1 is placed in the installation cavity, and the two sides of its bottom are abutted by the step portion 41 and the extension portion 42. In addition, after the fixing member 44 is loosened, the fixing member 44 slides with the guide column 43 under the support of the spring 45 to clamp the other side of the PCB circuit board 1, thereby completing the fixing;

[0039] After the electrostatic dust collecting plate 65 is powered on, the electrostatic dust collecting plate 65 absorbs the dust in the air, and then pulls the connecting rod 66 to drive the rubber scraper 67 to move, so as to clean the dust in the electrostatic dust collecting plate 65 and the mounting frame 61;

[0040] Then pull out the dust box 62 to clean the dust inside the box.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistant PCB circuit board, comprising a main frame (2) for mounting the PCB circuit board (1), characterized in that: The end surface of the main frame (2) is provided with a ventilation hole (3), and the PCB circuit board (1) is detachably connected to the ventilation hole (3) via a quick-release part (4), and a heat-conducting silicone pad (5) is provided between the PCB circuit board (1) and the ventilation hole (3); Wherein, the end surface of the main frame (2) is also provided with a dust removal component (6) for collecting dust.

2. A high temperature resistant PCB circuit board according to claim 1, characterized in that: The quick-release component (4) comprises a step portion (41) formed by extending inwardly from the inner wall of the vent (3); an extension portion (42) is provided on the end surface of the main frame (2) located at the bottom side of the vent (3); a mounting cavity is formed between the step portion (41) and the extension portion (42); the PCB circuit board (1) is arranged in the mounting cavity, and two sides of one end thereof are respectively in contact with the step portion (41) and the extension portion (42).

3. A high temperature resistant PCB circuit board according to claim 2, characterized in that: The top of the main frame (2) is slidably connected to a fixing member (44) via a pair of guide columns (43); a limiting protrusion is fixedly mounted on the other end of the guide column (43) and is sleeved with a spring (45); the two ends of the spring (45) are respectively fixedly connected to the limiting protrusion and the side of the fixing member (44); the fixing member (44) is capable of fixing the other end of the PCB circuit board (1).

4. The high temperature resistant PCB circuit board according to claim 1, characterized in that: The dust removal component (6) comprises a mounting frame (61) fixedly mounted on the end surface of the main frame (2); one end of the mounting frame (61) is provided with a dust outlet and is plugged with a dust collecting box (62); and deformation grooves (63) are provided on both sides of the open end of the dust collecting box (62).

5. A high temperature resistant PCB circuit board according to claim 4, characterized in that: A plurality of electrostatic dust collecting plates (65) are arranged in the installation frame (61) via a support rod (64); a connecting rod (66) is slidably connected in the dust collecting box (62); one end of the connecting rod (66) is fixedly connected to a rubber scraper (67); and the rubber scraper (67) is tightly fitted to the inner wall of the installation frame (61).

6. A high temperature resistant PCB circuit board according to claim 5, characterized in that: The rubber scraper (67) is provided with an escape groove at the center point and is slidably connected to the support rod (64) through the escape groove. A sponge is provided on the inner wall of the escape groove.

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