A PCB circuit board with high heat dissipation

Abstract

The application discloses a high-efficiency heat-dissipation PCB (Printed Circuit Board), and belongs to the technical field of the PCB, which solves the problem of poor heat-dissipation effect of the traditional PCB; the high-efficiency heat-dissipation PCB specifically comprises an upper frame and a lower frame, and a PCB is clamped between the upper frame and the lower frame; a plurality of connector sockets are arranged on the front end of the PCB, and the connector sockets are plugged with connector plugs; a plurality of motor drivers are integrated on the PCB, and a heat-dissipation structure is arranged on the top of the motor drivers; the heat-dissipation structure comprises a driver protection plate, and a heat-conducting silica gel sheet is arranged between each motor driver and the driver protection plate; and a driver protection tantalum plate is mounted on the top of the driver protection plate.In the application, the motor drivers generate heat when working as heat-generating devices, the heat-conducting silica gel sheet can fill the tiny gaps on the heat-generating devices, eliminates the air layer, and plays a heat-conducting effect, and meanwhile, the driver protection tantalum plate is used for realizing high-efficiency heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of PCB circuit board technology, and in particular to a PCB circuit board with high-efficiency heat dissipation. Background Technology

[0002] PCB circuit boards serve as the support for electronic components and the carrier for electrical connections. With the miniaturization and increasing performance of electronic devices, the density of electronic components on PCB circuit boards is constantly increasing; simultaneously, the power of some electronic components is also increasing, leading to increasingly serious heat accumulation problems during PCB circuit board use. Traditional PCB circuit board heat dissipation methods mainly rely on auxiliary equipment such as heat sinks and fans. While these methods are effective, they increase the complexity of the circuit board and the overall size of the circuit, thus preventing miniaturization.

[0003] Furthermore, the connection and fixing methods of PCB circuit boards also have shortcomings. Traditional PCB circuit boards are connected and fixed with screws, which requires precise alignment, is not easy to disassemble, and is prone to damage after repeated disassembly and assembly. Therefore, there is an urgent need to design a new PCB circuit board that can achieve efficient heat dissipation of electronic components and rapid circuit connection. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a PCB circuit board with high-efficiency heat dissipation, which solves the problem of poor heat dissipation of traditional PCB circuit boards.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A high-efficiency heat dissipation PCB circuit board includes an upper frame and a lower frame, with the PCB board sandwiched between the upper and lower frames; the front end of the PCB board is provided with several connector sockets, which are connected to connector plugs; several motor drivers are integrated on the PCB board, and a heat dissipation structure is provided on the top of the motor drivers; two power modules are installed on the top of the upper frame, and a protective plate is installed between the two power modules.

[0007] In this solution, the upper and lower frames are used to support and fix the PCB board and heat dissipation structure. The fixing method is compact and firm, and the installation is simple. The connector plug is inserted into the connector socket to realize the circuit connection. The motor driver generates heat when it works as a heat-generating device, and the heat dissipation structure can accelerate the dissipation of heat.

[0008] Furthermore, the heat dissipation structure includes a driver protection plate, which is mounted on the groove wall of the front end of the upper frame with screws; several motor drivers are arranged side by side below the driver protection plate, and a thermally conductive silicone pad is provided between each motor driver and the driver protection plate; the side of the thermally conductive silicone pad closest to the motor driver is the adhesive side, which is adhered to the motor driver; several driver protection tantalum plates are mounted on the top of the driver protection plate with screws, and each driver protection tantalum plate corresponds to one motor driver.

[0009] In this design, the thermally conductive silicone pad has adhesive on one side and no adhesive on the other. The adhesive side adheres tightly to the motor driver, filling tiny gaps in the driver and eliminating air pockets for better heat conduction. The pressure exerted by the screws between the thermally conductive silicone pad and the driver protection plate transfers heat to the protection plate. The driver protection tantalum plate on the protection plate is used for heat dissipation. Utilizing the high thermal conductivity, high temperature resistance, and corrosion resistance of tantalum, efficient heat dissipation is achieved through a heat conduction mechanism. The heat dissipation structure is simple and easy to install.

[0010] Furthermore, two guide sleeves are respectively provided on both sides of the connector socket on the PCB board, and the guide sleeves have flared inner holes; two guide pins are respectively provided on both sides of the connector plug, and the ends of the guide pins are tapered; the guide pins are inserted into the inner holes of the guide sleeves.

[0011] In this solution, the inner hole inside the guide sleeve is used to guide the insertion of the guide pin, thereby guiding the mating of the connector socket and the connector plug; the inner hole of the guide sleeve matches the outer diameter of the guide pin to ensure the accuracy and stability during mating, enabling quick and accurate connection of PCB circuit boards, with a stable connection and easy installation.

[0012] Furthermore, two locking strips are provided on each side of the upper frame; the locking strips are fixed by locking screws, which pass through the through holes of the lower frame, PCB board and upper frame edge from bottom to top, and are threadedly connected to the locking strips.

[0013] In this design, the locking strip connects the lower frame, PCB board, and upper frame into a single unit, making installation simple, sturdy, durable, and resistant to damage.

[0014] Furthermore, the locking bar includes a central shaft, one end of which is fixedly connected to a fixed block, and the other end of which is fitted with a movable block; several trapezoidal blocks are fitted on the shaft between the fixed block and the movable block on the central shaft, with adjacent trapezoidal blocks arranged in opposite directions, and the waists of adjacent trapezoidal blocks contacting each other; both the fixed block and the movable block are right-angled trapezoidal structures, with the waist of the fixed block contacting the waist of the first trapezoidal block, and the waist of the movable block contacting the waist of the last trapezoidal block;

[0015] A fastening bolt is threaded to one end of the central shaft near the movable block, and a spring is installed between the bolt head of the fastening bolt and the central shaft;

[0016] The bottom of the trapezoidal block has a strip-shaped through hole along the direction of the central axis. The locking screw passes through the strip-shaped through hole and is threaded into the threaded hole at the bottom of the central axis.

[0017] In this design, when installing the locking strip, tightening the fastening bolts pushes the movable block to move closer to the trapezoidal block, thereby causing the trapezoidal blocks to press against each other. Under the action of the inclined surface at the waist of the trapezoidal block, adjacent trapezoidal blocks are staggered vertically, making the entire locking strip thicker in the vertical direction, thus pressing and fixing the upper frame, PCB board, and lower frame. This design is simple to install, not only enabling rapid fixing of the PCB board, but also allowing for flexible adjustment of the locking strip's thickness, making it compatible with various fixing spaces.

[0018] Furthermore, the upper frame has an upward-protruding fence around its edge, and the power module is located inside the fence. A power protection plate is installed above the power module. The power protection plate is fixed by positioning screws, which pass through through holes on the edge of the power protection plate and are threaded to the top of the fence.

[0019] Furthermore, a power protection tantalum plate is bonded to the power protection board using an adhesive.

[0020] Furthermore, the protective plate is mounted on the upper frame with screws.

[0021] The beneficial effects of this invention are:

[0022] The high-efficiency heat dissipation PCB circuit board provided by this invention uses a guide pin insertion method to guide the connector socket and connector plug to connect quickly and accurately, ensuring a stable connection and easy installation. The upper and lower frames are fixed to the top and bottom of the PCB board by locking strips, enabling quick PCB board fixation, simple installation, durability, and resistance to damage, while also offering some compatibility in terms of fixing space. A thermally conductive silicone pad is adhered to the motor driver for better heat conduction; the pressure contact between the thermally conductive silicone pad and the driver protective plate transfers heat to the driver protective plate; the driver protective tantalum plate on the driver protective plate is used for heat dissipation, achieving efficient heat dissipation through a heat conduction mechanism. The heat dissipation structure is simple and compact, realizing the miniaturization of the circuit structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a high-efficiency heat dissipation PCB circuit board according to the present invention;

[0024] Figure 2This is an exploded view of a high-efficiency heat dissipation PCB circuit board according to the present invention;

[0025] Figure 3 This is a cross-sectional view of the heat dissipation structure in this invention;

[0026] Figure 4 This is a schematic diagram of the structure of the guide sleeve, guide pin, and connector plug in this invention;

[0027] Figure 5 This is a partial cross-sectional view of a PCB circuit board with high-efficiency heat dissipation according to the present invention.

[0028] Figure 6 This is a cross-sectional view of the locking strip in a relaxed state in this invention.

[0029] Figure 7 This is a cross-sectional structural diagram of the locking strip in a tensioned state in this invention.

[0030] Figure label:

[0031] 1. PCB board; 10. Connector socket; 11. Connector plug; 12. Guide sleeve; 13. Guide pin; 2. Upper frame; 21. Fence; 3. Lower frame; 4. Power module; 5. Motor driver; 6. Protective plate; 71. Thermal conductive silicone sheet; 72. Driver protective plate; 73. Driver protective tantalum plate; 8. Power protective plate; 81. Positioning screw; 82. Power protective tantalum plate; 9. Locking strip; 91. Locking screw; 92. Trapezoidal block; 93. Fixing block; 94. Fastening bolt; 95. Moving block; 96. Spring; 97. Central shaft. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various modifications are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides a high-efficiency heat dissipation PCB circuit board. This high-efficiency heat dissipation PCB circuit board adopts a novel connection and fixing method and a simple heat dissipation structure, achieving rapid connection and efficient heat dissipation; moreover, it has a simple structure and small size; specifically, it includes:

[0034] PCB board 1, upper frame 2, lower frame 3, power module 4, motor driver 5, protective plate 6, heat dissipation structure, locking strip 9, connector socket 10 and connector plug 11;

[0035] The upper frame 2 and the lower frame 3 hold a PCB board 1. Several connector sockets 10 are provided at the front end of the PCB board 1, and the connector sockets 10 are connected to connector plugs 11. Several motor drivers 5 are integrated on the PCB board 1, and a heat dissipation structure is provided on the top of each motor driver 5. The motor drivers 5 generate heat when working as heat-generating devices, and the heat dissipation structure accelerates heat dissipation. Two power modules 4 are installed on the top of the upper frame 2, and a protective plate 6 is installed between the two power modules 4.

[0036] like Figure 3 As shown, the heat dissipation structure includes a thermally conductive silicone pad 71, a driver protection plate 72, and a driver protection tantalum plate 73. The driver protection plate 72 is mounted on the groove wall of the front end recess of the upper frame 2 using M1.6×5 Phillips head screws. Several motor drivers 5 are arranged side by side below the driver protection plate 72, and a thermally conductive silicone pad 71 is placed between each motor driver 5 and the driver protection plate 72. The side of the thermally conductive silicone pad 71 closest to the motor driver 5 is adhesive and is adhered to the motor driver 5. Several driver protection tantalum plates 73 are mounted on the top of the driver protection plate 72 using M1.6×3 Phillips head screws, with each driver protection tantalum plate 73 corresponding to a motor driver 5. The adhesive side of the thermally conductive silicone pad 71 tightly adheres to the motor driver 5, filling the tiny gaps on the motor driver 5, eliminating air layers, and achieving better heat conduction. The thermally conductive silicone pad 71 and the driver protection plate 72 are squeezed together by the screw force, which can transfer heat to the driver protection plate 72. The driver protection tantalum plate 73 on the driver protection plate 72 is used for heat dissipation. It utilizes the material properties of tantalum metal, such as high thermal conductivity, high temperature resistance and corrosion resistance, to achieve efficient heat dissipation through heat conduction mechanism. The heat dissipation structure is simple and easy to install.

[0037] As a preferred embodiment, the motor driver 5 is a driver with model number LMD18200-2D / 883.

[0038] like Figure 4As shown, two guide sleeves 12 are respectively arranged on both sides of the connector socket 10 on the PCB board 1. The guide sleeves 12 have flared inner holes. Two guide pins 13 are respectively arranged on both sides of the connector plug 11. The ends of the guide pins 13 are tapered. The guide pins 13 are inserted into the inner holes of the guide sleeves 12. The inner holes of the guide sleeves 12 are used to guide the insertion of the guide pins 13, thereby guiding the mating of the connector socket 10 and the connector plug 11. The inner diameter of the guide sleeves 12 matches the outer diameter of the guide pins 13 to ensure the accuracy and stability during mating. This allows for quick and accurate connection of the PCB board, with a stable connection and easy installation.

[0039] As a preferred embodiment, the connector socket 10 and the connector plug 11 are VPX crimp connectors of model C1410189-3.

[0040] like Figure 5 As shown, two locking strips 9 are respectively provided on both sides of the upper frame 2; the locking strips 9 are fixed by locking screws 91, which pass through the through holes of the lower frame 3, PCB board 1 and upper frame 2 from bottom to top, and are threadedly connected to the locking strips 9. The design of the locking strips 9 connects the lower frame 3, PCB board 1 and upper frame 2 into a whole, which is simple to install, sturdy and durable and not easily damaged.

[0041] like Figure 6 As shown, the locking bar 9 includes a trapezoidal block 92, a fixed block 93, a fastening bolt 94, a movable block 95, a spring 96, and a central shaft 97. One end of the central shaft 97 is fixedly connected to the fixed block 93, and the other end is fitted with the movable block 95. Several trapezoidal blocks 92 are fitted onto the shaft of the central shaft 97 located between the fixed block 93 and the movable block 95. Adjacent trapezoidal blocks 92 are arranged in opposite directions, with their waists in contact with each other. Both the fixed block 93 and the movable block 95 are right-angled trapezoidal structures. The waist of the fixed block 93 contacts the waist of the first trapezoidal block 92, and the waist of the movable block 95 contacts the waist of the last trapezoidal block 92. A fastening bolt 94 is threadedly connected to the end of the central shaft 97 near the movable block 95, and a spring 96 is positioned between the bolt head of the fastening bolt 94 and the central shaft 97. The bottom of the trapezoidal block 92 has a strip-shaped through hole along the direction of the central axis 97. The locking screw 91 passes through the strip-shaped through hole and is threaded into the threaded hole at the bottom of the central axis 97. When installing the locking strip 9, tighten the fastening bolt 94. The fastening bolt 94 pushes the movable block 95 to move closer to the trapezoidal block 92, thereby pushing the trapezoidal blocks 92 to press against each other. Under the action of the inclined surface of the waist of the trapezoidal block 92, the two adjacent trapezoidal blocks 92 are staggered vertically, making the entire locking strip 9 thicker in the vertical direction, thus pressing and fixing the upper frame 2, PCB board 1 and lower frame 3.

[0042] like Figure 6 As shown, Figure 6 When all trapezoidal blocks 92 of the locking bar 9 are at the same height, the locking bar 9 is in a relaxed state. Figure 7 As shown, Figure 7 The trapezoidal blocks 92 of the central locking bar 9 are staggered vertically, and the locking bar 9 is in a tensioned state at this time.

[0043] Preferably, the locking screw 91 is an M2.5×10 Phillips head countersunk screw.

[0044] The upper frame 2 has an upward-protruding fence 21 around its edge. The power module 4 is installed inside the fence 21, and the four corners of the power module 4 are fixed to the upper frame 2 with M2×12 Phillips head countersunk screws. A power protection plate 8 is installed above the power module 4. The power protection plate 8 is fixed by positioning screws 81, which pass through the through holes on the edge of the power protection plate 8 and are threaded to the top of the fence 21.

[0045] Preferably, the positioning screw 81 is an M2×4 Phillips countersunk screw.

[0046] A power protection tantalum plate 82 is bonded to the power protection plate 8 with an adhesive.

[0047] The protective plate 6 is installed on the upper frame 2 using M2×3 Phillips head countersunk screws.

[0048] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention and should be understood as not limiting the scope of protection of the invention to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed herein without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of the invention.

Claims

1. A high-efficiency heat dissipation PCB circuit board, characterized in that: The device includes an upper frame (2) and a lower frame (3), with a PCB board (1) sandwiched between the upper frame (2) and the lower frame (3); a connector socket (10) is provided at the front end of the PCB board (1), and the connector socket (10) is plugged into a connector plug (11); a motor driver (5) is integrated on the PCB board (1), and a heat dissipation structure is provided on the top of the motor driver (5); two power modules (4) are installed on the top of the upper frame (2), and a protective plate (6) is installed between the two power modules (4); The heat dissipation structure includes a driver protection plate (72), which is mounted on the groove wall of the front end of the upper frame (2) by screws; the motor drivers (5) are arranged side by side below the driver protection plate (72), and a thermally conductive silicone pad (71) is provided between each motor driver (5) and the driver protection plate (72); the side of the thermally conductive silicone pad (71) near the motor driver (5) is an adhesive side, which is attached to the motor driver (5); a driver protection tantalum plate (73) is mounted on the top of the driver protection plate (72) by screws, and the driver protection tantalum plate (73) corresponds one-to-one with the motor driver (5); Two guide sleeves (12) are respectively provided on the PCB board (1) at the positions on both sides of the connector socket (10), and the guide sleeves (12) are provided with flared inner holes; two guide pins (13) are respectively provided on both sides of the connector plug (11), and the ends of the guide pins (13) are tapered; the guide pins (13) are inserted into the inner holes of the guide sleeves (12); Two locking strips (9) are provided on both sides of the upper frame (2); the locking strips (9) are fixed by locking screws (91), and the locking screws (91) pass through the through holes of the lower frame (3), the PCB board (1) and the edge of the upper frame (2) from bottom to top, and are threadedly connected to the locking strips (9). The locking bar (9) includes a central shaft (97), one end of which is fixedly connected to a fixed block (93), and the other end of which is sleeved with a movable block (95); a trapezoidal block (92) is sleeved on the shaft between the fixed block (93) and the movable block (95) on the central shaft (97), and two adjacent trapezoidal blocks (92) are arranged in opposite directions, with the waists of the two adjacent trapezoidal blocks (92) in contact with each other; both the fixed block (93) and the movable block (95) are right-angled trapezoidal structures, the waist of the fixed block (93) is in contact with the waist of the first trapezoidal block (92), and the waist of the movable block (95) is in contact with the waist of the last trapezoidal block (92); A fastening bolt (94) is threaded to one end of the central shaft (97) near the movable block (95), and a spring (96) is provided between the bolt head of the fastening bolt (94) and the central shaft (97). The bottom of the trapezoidal block (92) is provided with a strip-shaped through hole along the direction of the central axis (97). The locking screw (91) passes through the strip-shaped through hole and is threaded into the threaded hole at the bottom of the central axis (97). When installing the locking strip (9), tighten the fastening bolt (94). The fastening bolt (94) pushes the movable block (95) to move closer to the trapezoidal block (92), thereby pushing the trapezoidal blocks (92) to squeeze each other. Under the action of the inclined surface of the waist of the trapezoidal block (92), the two adjacent trapezoidal blocks (92) are staggered vertically, making the entire locking strip (9) thicker in the vertical direction, and squeezing and fixing the upper frame (2), PCB board (1) and lower frame (3).

2. The high-efficiency heat dissipation PCB circuit board according to claim 1, characterized in that: The upper frame (2) has an upward-protruding fence (21) on its edge, and the power module (4) is set inside the fence (21); a power protection plate (8) is set above the power module (4), and the power protection plate (8) is fixed by a positioning screw (81). The positioning screw (81) passes through the through hole on the edge of the power protection plate (8) and is threaded to the top of the fence (21).

3. The high-efficiency heat dissipation PCB circuit board according to claim 2, characterized in that: A power protection tantalum plate (82) is bonded to the power protection plate (8) by an adhesive.

4. The high-efficiency heat dissipation PCB circuit board according to claim 1, characterized in that: The protective plate (6) is mounted on the upper frame (2) by screws.

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