Rapid heat dissipation assembly of flexible circuit board

Abstract

The utility model discloses a rapid heat dissipation assembly of a flexible circuit board, which relates to the technical field of circuit boards and comprises a flexible circuit board, and an upper heat conduction silica gel pad and a lower heat conduction silica gel pad are respectively attached to the upper surface and the lower surface of the flexible circuit board. Three sets of fixing assemblies distributed at equal intervals are arranged between the upper heat conduction silica gel pad and the lower heat conduction silica gel pad, each fixing assembly comprises a bottom plate, the bottom plates are movably attached to the bottom of the lower heat conduction silica gel pad, and connecting rods are fixedly arranged at the two ends of each bottom plate. According to the utility model, through the installation of the fixing assembly, the top rod and the bottom plate tightly press the upper heat-conducting silica gel pad and the lower heat-conducting silica gel pad on the flexible circuit board, thereby preventing the upper heat-conducting silica gel pad and the lower heat-conducting silica gel pad from falling off, and solving the problems that when the existing flexible circuit board is used on an unmanned aerial vehicle or an airplane data recorder, the vibration is easy to generate in the use process; therefore, the heat-conducting silica gel pad on the flexible circuit board is easy to fall off during vibration, and the heat dissipation of the flexible circuit board is affected.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a fast heat dissipation component for flexible circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCs) are highly reliable and extremely flexible printed circuit boards made from polyimide or polyester film as the substrate. They are characterized by high wiring density, light weight, thinness, and good bendability. Flexible circuits offer excellent electrical performance, meet the design requirements of smaller and higher-density installations, and also help reduce assembly steps and enhance reliability, so they are widely used in drones.

[0003] The existing patent publication number is CN218959178U, which discloses a heat dissipation flexible circuit board for 5G communication equipment. This utility model is a heat dissipation circuit board that uses thermally conductive silicone pads, strip heat dissipation fins and phase change material protrusions to quickly absorb and release heat from the circuit board body. It also uses a blower heat dissipation component and a blower, blower pipe, U-shaped air guide cavity and ventilation holes in the heat dissipation structure to quickly dissipate heat. This not only meets the heat dissipation requirements, but also allows the entire flexible circuit board to retain its flexibility through the U-shaped sleeve made of soft silicone material.

[0004] However, when the flexible circuit board disclosed in the above patent is used in drones or aircraft data recorders, it is prone to vibration during use, which can cause the thermal conductive silicone pad on the flexible circuit board to fall off during vibration, affecting the heat dissipation of the flexible circuit board. To address this issue, we propose a fast heat dissipation component for flexible circuit boards. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a fast heat dissipation component for flexible circuit boards, which can solve the problem that when existing flexible circuit boards are used in drones or aircraft data loggers, vibrations easily occur during use, causing the thermal conductive silicone pads on the flexible circuit boards to easily fall off during vibrations, thus affecting the heat dissipation of the flexible circuit boards.

[0007] To solve the above technical problems, this utility model provides a fast heat dissipation component for flexible circuit boards, which adopts the following technical solution: it includes a flexible circuit board, and an upper thermally conductive silicone pad and a lower thermally conductive silicone pad are respectively attached to the upper and lower surfaces of the flexible circuit board. Three sets of fixing components are arranged at equal intervals between the upper and lower thermally conductive silicone pads.

[0008] The fixing assembly includes a base plate that is movably fitted to the bottom of the lower thermally conductive silicone pad. Connecting rods are fixedly installed at both ends of the base plate. An adjustment groove is fixedly installed inside each connecting rod. An insert rod is slidably installed inside each adjustment groove. A top rod is fixedly connected between the upper ends of the two insert rods. The lower surface of the top rod and the upper surface of the upper thermally conductive silicone pad are in contact with each other. A slot is fixedly opened on the side of each insert rod. A movable groove is provided on the side of the adjustment groove. A movable plate is slidably installed inside the movable groove. A spring is fixedly connected between the movable plate and the end of the movable groove. A retaining ball is fixedly installed on the side of the movable plate away from the spring. The retaining ball extends into the adjustment groove, and the retaining ball and the retaining groove engage with each other.

[0009] Preferably, the card slots are arranged at equal intervals in the vertical direction, and there are several of them.

[0010] Preferably, a handle is fixedly provided at the middle of the top of the top rod.

[0011] Preferably, a fixing plate is fixedly provided at the bottom of the side of the connecting rod.

[0012] Preferably, the two sets of fixing components are located at the front and rear ends of the upper thermally conductive silicone pad, respectively, and an auxiliary component is provided on the fixing component at the front end.

[0013] Preferably, the auxiliary component includes an L-shaped plate, which is fixedly mounted on the side of one of the connecting rods. A blower is fixedly mounted on the L-shaped plate, and an air duct is fixedly connected to the air outlet of the blower. The air duct has a rectangular structure, and several evenly distributed branch pipes are fixedly mounted on the outer ring of the air duct. The air outlets of the branch pipes face the flexible circuit board.

[0014] Preferably, an elastic clip is fixedly provided on the side of the connecting rod away from the upper thermally conductive silicone pad, and the air duct is clipped onto the elastic clip.

[0015] In summary, this utility model has at least one of the following beneficial effects:

[0016] 1. By installing the fixing components, the top rod and the bottom plate press the upper and lower thermal conductive silicone pads firmly onto the flexible circuit board, thereby preventing them from falling off. This solves the problem that when the existing flexible circuit board is used in drones or aircraft data recorders, vibrations can easily occur during use, causing the thermal conductive silicone pads on the flexible circuit board to fall off during vibrations, which affects the heat dissipation of the flexible circuit board.

[0017] 2. The front and rear fixing components are located at the front and rear ends of the upper thermal conductive silicone pad, respectively, so as to press the two ends of the thermal conductive silicone pad tightly and prevent the ends of the thermal conductive silicone pad from lifting up and reducing the heat dissipation performance of the flexible circuit board.

[0018] 3. The position of the insertion rod inside the adjustment groove is adjustable, thereby adjusting the distance between the top rod and the bottom plate. This facilitates the clamping of thermally conductive silicone pads of different thicknesses, expanding the applicability of the device.

[0019] 4. By installing the auxiliary components and starting the blower, the external cold air is blown onto the flexible circuit board through the air duct and branch pipe, thereby accelerating the heat dissipation of the flexible circuit board and further improving its heat dissipation performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a fast heat dissipation component for a flexible circuit board according to the present invention.

[0022] Figure 2 This is a schematic diagram showing the disassembled structure of the flexible circuit board and thermally conductive silicone pad of this utility model;

[0023] Figure 3 This is a schematic diagram of the three sets of fixing components of this utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the fixing component of this utility model;

[0025] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A;

[0026] Figure 6 This is a three-dimensional structural diagram of the fixing component located at the front end of this utility model.

[0027] Explanation of reference numerals in the attached diagram: 1. Flexible circuit board; 2. Upper thermally conductive silicone pad; 3. Lower thermally conductive silicone pad; 4. Base plate; 5. Connecting rod; 6. Insert rod; 7. Top rod; 8. Slot; 9. Movable slot; 10. Spring; 11. Movable plate; 12. Ball catch; 13. Handle; 14. Fixing plate; 15. L-shaped plate; 16. Blower; 17. Air duct; 18. Branch pipe; 19. Elastic clip. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 This utility model provides an embodiment of a fast heat dissipation component for flexible circuit boards, comprising a flexible circuit board 1, with an upper thermally conductive silicone pad 2 and a lower thermally conductive silicone pad 3 respectively attached to the upper and lower surfaces of the flexible circuit board 1. The arrangement of the upper and lower thermally conductive silicone pads 2 and 3 facilitates heat dissipation from the flexible circuit board 1, solving the problem that existing flexible circuit boards 1 do not have a good heat dissipation structure, resulting in slow temperature rise during long-term use and affecting work efficiency.

[0030] Considering that the flexible circuit board 1 is prone to vibration during use when used in drones or aircraft data recorders, which can cause the thermal conductive silicone pads on the flexible circuit board 1 to easily fall off and affect the heat dissipation of the flexible circuit board 1, this utility model provides three sets of equidistantly arranged fixing components between the upper thermal conductive silicone pad 2 and the lower thermal conductive silicone pad 3. The fixing components include a base plate 4, which is movably attached to the bottom of the lower thermal conductive silicone pad 3. Connecting rods 5 are fixedly provided at both ends of the base plate 4, and adjusting grooves are fixedly provided inside the connecting rods 5. The adjusting grooves are slidably designed... A rod 6 is provided, and a top rod 7 is fixedly connected between the upper ends of the two rods 6. A handle 13 is fixedly provided in the middle of the top of the top rod 7. The lower surface of the top rod 7 and the upper surface of the upper thermal conductive silicone pad 2 are in contact with each other. A slot 8 is fixedly opened on the side of the rod 6. A movable slot 9 is provided on the side of the adjustment slot. A movable plate 11 is slidably provided inside the movable slot 9. A spring 10 is fixedly connected between the end of the movable plate 11 and the movable slot 9. A retaining ball 12 is fixedly provided on the side of the movable plate 11 away from the spring 10. The retaining ball 12 extends into the interior of the adjustment slot, and the retaining ball 12 and the slot 8 are engaged with each other.

[0031] Specifically, place the base plate 4 at the bottom of the lower thermal conductive silicone pad 3, hold the handle 13, and insert the two insert rods 6 on the top rod 7 into the adjustment slots inside the two connecting rods 5 respectively. When the slot 8 passes through the retaining ball 12, the spring 10 returns to its elasticity, pushing the movable plate 11 and the retaining ball 12 outward, thereby locking the retaining ball 12 inside the slot 8, thus fixing the position of the insert rod 6. This allows the top rod 7 and the base plate 4 to press the upper thermal conductive silicone pad 2 and the lower thermal conductive silicone pad 3 firmly onto the flexible circuit board 1, thus preventing them from falling off. This solves the problem that when the existing flexible circuit board 1 is used in drones or aircraft data recorders, it is prone to vibration during use, causing the thermal conductive silicone pad on the flexible circuit board 1 to easily fall off during vibration, affecting the heat dissipation of the flexible circuit board 1.

[0032] In addition, the front and rear fixing components are located at the front and rear ends of the upper thermal conductive silicone pad 2, respectively. This arrangement presses the two ends of the thermal conductive silicone pad tightly, preventing the ends of the thermal conductive silicone pad from lifting up and reducing the heat dissipation performance of the flexible circuit board 1.

[0033] Furthermore, there are several slots 8 arranged at equal intervals in the vertical direction. This arrangement allows the position of the insertion rod 6 inside the adjustment slot to be adjusted, thereby adjusting the distance between the top rod 7 and the bottom plate 4. This facilitates the pressing of thermally conductive silicone pads of different thicknesses, expanding the applicability of the device.

[0034] Furthermore, a fixing plate 14 is fixedly installed on the bottom side of the connecting rod 5. The installation of the fixing plate 14 makes it easy to fix the fixing plate 14 and the drone or aircraft data recorder with bolts.

[0035] To further improve the heat dissipation performance of the flexible circuit board 1, an auxiliary component is provided on the fixed component at the front end. The auxiliary component includes an L-shaped plate 15, which is fixedly installed on the side of one of the connecting rods 5. A blower 16 is fixedly installed on the L-shaped plate 15, and an air duct 17 is fixedly connected to the air outlet of the blower 16. The air duct 17 has a rectangular structure, and several evenly distributed branch pipes 18 are fixedly installed on the outer ring of the air duct 17. The air outlets of the branch pipes 18 face the flexible circuit board 1.

[0036] Specifically, when the blower 16 is started, the external cold air passes through the air duct 17 and the branch pipe 18 and blows onto the flexible circuit board 1, thereby accelerating the heat dissipation of the flexible circuit board 1 and further improving the heat dissipation performance of the flexible circuit board 1.

[0037] Furthermore, an elastic clip 19 is fixedly installed on the side of the connecting rod 5 away from the upper thermal conductive silicone pad 2. The air duct 17 is clipped onto the elastic clip 19, and the air duct 17 is supported by the installation of the elastic clip 19.

[0038] It should be noted that there is a distance between the three sets of fixing components of this utility model, and the air duct 17 is made of flexible hose material, so as not to affect the bending and use of the flexible circuit board 1.

[0039] Working principle: When using this utility model, place the base plate 4 at the bottom of the lower thermally conductive silicone pad 3, hold the handle 13, and insert the two insert rods 6 on the top rod 7 into the adjustment slots inside the two connecting rods 5 respectively. When the slot 8 passes through the retaining ball 12, the spring 10 returns to its elasticity, pushing the movable plate 11 and retaining ball 12 outward, thereby locking the retaining ball 12 inside the slot 8, thus fixing the position of the insert rod 6. This allows the top rod 7 and the base plate 4 to press the upper thermally conductive silicone pad 2 and the lower thermally conductive silicone pad 3 tightly onto the flexible circuit board 1, thus preventing them from falling off. Then, use bolts to fix the fixing plate 14 to the drone or aircraft data recorder. In addition, when the flexible circuit board 1 overheats, start the blower 16. The external cold air blows onto the flexible circuit board 1 after passing through the air duct 17 and the branch pipe 18, thereby accelerating the heat dissipation of the flexible circuit board 1 and ensuring the working performance of the flexible circuit board 1.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A fast heat dissipation assembly for a flexible circuit board, comprising a flexible circuit board (1), characterized in that: The upper and lower surfaces of the flexible circuit board (1) are respectively fitted with an upper thermally conductive silicone pad (2) and a lower thermally conductive silicone pad (3), and three sets of equidistantly arranged fixing components are provided between the upper thermally conductive silicone pad (2) and the lower thermally conductive silicone pad (3). The fixing assembly includes a base plate (4), which is movably fitted to the bottom of the lower thermally conductive silicone pad (3). Connecting rods (5) are fixedly installed at both ends of the base plate (4). An adjustment groove is fixedly installed inside each connecting rod (5), and an insert rod (6) is slidably installed inside the adjustment groove. A top rod (7) is fixedly connected between the upper ends of the two insert rods (6). The lower surface of the top rod (7) and the upper surface of the upper thermally conductive silicone pad (2) are in contact with each other. (6) has a slot (8) fixedly opened on the side, and a movable slot (9) is provided on the side of the adjustment slot. A movable plate (11) is slidably arranged inside the movable slot (9). A spring (10) is fixedly connected between the end of the movable plate (11) and the movable slot (9). A ball (12) is fixedly arranged on the side of the movable plate (11) away from the spring (10). The ball (12) extends into the interior of the adjustment slot, and the ball (12) and the slot (8) are engaged with each other.

2. The rapid heat dissipation assembly for a flexible circuit board according to claim 1, characterized in that: The slots (8) are arranged at equal intervals in the vertical direction, and there are several of them.

3. The rapid heat dissipation assembly for a flexible circuit board according to claim 1, characterized in that: A handle (13) is fixedly installed at the middle of the top of the top rod (7).

4. The rapid heat dissipation assembly for a flexible circuit board according to claim 1, characterized in that: A fixing plate (14) is fixedly installed at the bottom of the side of the connecting rod (5).

5. The rapid heat dissipation assembly for a flexible circuit board according to claim 1, characterized in that: The two sets of fixing components are located at the front and rear ends of the upper thermally conductive silicone pad (2), respectively, and the fixing component at the front end is provided with an auxiliary component.

6. The rapid heat dissipation assembly for a flexible circuit board according to claim 5, characterized in that: The auxiliary component includes an L-shaped plate (15), which is fixedly mounted on the side of one of the connecting rods (5). A blower (16) is fixedly mounted on the L-shaped plate (15). A duct (17) is fixedly connected to the air outlet of the blower (16). The duct (17) has a rectangular structure. Several evenly distributed branch pipes (18) are fixedly mounted on the outer ring of the duct (17). The air outlets of the branch pipes (18) face the flexible circuit board (1).

7. A rapid heat dissipation assembly for a flexible circuit board according to claim 6, characterized in that: An elastic clip (19) is fixedly installed on the side of the connecting rod (5) away from the upper thermally conductive silicone pad (2), and the air duct (17) is clipped on the elastic clip (19).

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