A high stability circuit board

Abstract

The present application discloses a high-stability circuit board, including a circuit board body, a plurality of shielding cover units and a heat dissipation unit, wherein the shielding cover unit is installed at the circuit board body. In the circuit board of the present application, the shielding cover unit itself does not need to be fixed, and after the heat dissipation unit is disassembled, the shielding cover unit can be easily taken in and out, so that the installation and placement of the shielding cover unit is convenient. The shielding cover unit itself has heat dissipation fins and heat dissipation holes to increase the passive heat dissipation effect, and a heat dissipation unit is added to actively dissipate heat for all shielding cover units, resulting in a better heat dissipation effect. The heat dissipation unit forms a plurality of shielding cover units into a whole, thereby enhancing the integrity and strength of the circuit board as a whole. It is more convenient to maintain the heat dissipation unit itself, and when maintaining the circuit board, it is more convenient to check and maintain the dust inside the external air cooling pipe and the internal air cooling pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit boards, and more specifically, to a high-stability circuit board. Background Art

[0002] A circuit board is a fixed substrate that connects electronic components. Circuit boards can connect more circuits and components in a limited space, improving the compactness and performance of electronic equipment. Circuit boards are widely used in various electronic devices and play a vital role in the electronics industry.

[0003] There are many electronic components installed on the circuit board with high integration. Electronic components such as processors that require heat dissipation or electromagnetic shielding are often installed. Traditional circuit boards only use shielding covers to provide electromagnetic shielding. The installation and removal of shielding covers are inconvenient, and frequent removal and installation may also cause damage or loosening of the shielding covers, affecting the electromagnetic shielding effect. In addition, the heat dissipation effect of using shielding covers alone is not good. Especially in high-density and high-power consumption application scenarios, the heat dissipation area and heat dissipation efficiency that the shielding covers can provide are far from meeting the requirements. This will cause the temperature of electronic components to be too high, performance to decline, and even cause failures. The traditional circuit board design is also insufficient in overall strength. Due to the lack of effective connection and support between the components, the circuit board is prone to deformation or damage when subjected to external forces such as vibration and impact, affecting the stability and reliability of the equipment. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provide a high-stability circuit board.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circuit board, comprising a circuit board body, a plurality of shielding cover units and a heat dissipation unit, wherein the shielding cover unit is installed on the circuit board body, the heat dissipation unit comprises a covering unit, a lower inner half tube and a lower outer half tube, the covering unit comprises an upper inner half tube, an upper outer half tube and a heat conducting portion connecting the upper outer half tube and the upper inner half tube, all the shielding cover units abut against the heat conducting portion, the upper outer half tube and the lower outer half tube can be spliced ​​into an outer air-cooling tube, and the upper inner half tube and the lower inner half tube can be spliced ​​into an inner air-cooling tube.

[0006] Furthermore, the cross-section of the internal channel of the external air cooling pipe is rectangular.

[0007] Furthermore, the cross-section of the internal channel of the internal air-cooling pipe is rectangular.

[0008] Furthermore, each shielding cover unit covers components installed on the circuit board body.

[0009] This achieves shielding and heat dissipation for components.

[0010] Furthermore, the shielding cover units are three and distributed in an L shape. The shielding cover units include a cover plate, a plurality of side plates connected to the cover plate, and a plurality of positioning columns connected to the cover plate. The ends of the positioning columns are bonded with elastic pads, and the circuit board body has a plurality of positioning blind holes that cooperate with the positioning columns.

[0011] Therefore, the installation and positioning of the shielding cover unit is more accurate, and it is ensured that the shielding cover unit abuts against the heat conducting unit.

[0012] Furthermore, each cover plate is connected to four positioning columns; the circuit board body is provided with three shielding cover installation areas, and each shielding cover installation area is provided with four positioning blind holes.

[0013] Furthermore, the heat conduction part includes three heat conduction plates, which correspond to three shielding cover units one by one, respectively, and each heat conduction plate abuts against the cover plate of a shielding cover unit, and the heat conduction plate has a strip-shaped through groove; the three shielding cover units are located between the lower inner half-tube and the lower outer half-tube; the upper inner half-tube, the upper outer half-tube, the lower inner half-tube and the lower outer half-tube each include two straight half-tubes and an arc-shaped half-tube connecting the two straight half-tubes; the two ends of the lower inner half-tube are respectively connected to the inner air inlet end tube and the inner air outlet end tube, and the two ends of the lower outer half-tube are respectively connected to the outer air inlet end tube and the outer air outlet end tube; the inner air inlet end tube, the inner air outlet end tube, the outer air inlet end tube and the outer air outlet end tube are all connected on both sides with side convex plates, and the side convex plates have bolt through holes, and the inner air inlet end The tube, the inner air outlet end tube, the outer air inlet end tube and the outer air outlet end tube each correspond to a strip mounting seat fixed to the circuit board body, the strip mounting seat has a accommodating groove and two threaded holes, and the side convex plate is fixedly connected to the threaded holes of the strip mounting seat by bolts; the upper inner half tube is connected to an inner arc convex plate, and the upper outer half tube is connected to an outer arc convex plate, and the inner arc convex plate and the outer arc convex plate both have bolt through holes, and the circuit board body is installed with an inner arc seat and an outer arc seat, the inner arc seat has an inner arc groove and a threaded hole, the outer arc seat has an outer arc groove and a threaded hole, the inner arc convex plate is fixedly connected to the threaded hole of the inner arc seat by bolts, and the outer arc convex plate is fixedly connected to the threaded hole of the outer arc seat by bolts.

[0014] Furthermore, the inner air inlet end pipe, the inner air outlet end pipe, the outer air inlet end pipe and the outer air outlet end pipe are all installed in the accommodating grooves of the corresponding strip-shaped mounting seats.

[0015] Therefore, the installation of the inner air inlet end pipe, the inner air outlet end pipe, the outer air inlet end pipe and the outer air outlet end pipe is more stable.

[0016] Furthermore, the lower inner half pipe is installed at the inner arc-shaped groove, and the lower outer half pipe is installed at the outer arc-shaped groove.

[0017] Thereby, the installation of the lower inner half pipe and the lower outer half pipe is more stable and the positioning is more accurate.

[0018] Furthermore, each heat conducting plate has two strip-shaped through grooves.

[0019] Therefore, the strip-shaped through grooves can achieve passive heat dissipation.

[0020] Furthermore, the inner arc-shaped convex plate and the outer arc-shaped convex plate each have two bolt through holes.

[0021] Furthermore, the cover plate of each shielding cover unit has heat dissipation fins located in the strip-shaped through grooves of the corresponding heat conducting plate, and the cover plate of the shielding cover unit also has heat dissipation holes not covered by the corresponding heat conducting plate.

[0022] Thereby, the heat dissipation fins and heat dissipation holes can increase the effect of passive heat dissipation.

[0023] Furthermore, the upper outer half tube and the upper inner half tube both have a first step portion, and the lower outer half tube and the lower inner half tube both have a second step portion that matches the first step portion.

[0024] Thereby, the upper outer half tube and the lower outer half tube can be better spliced ​​together, and the upper inner half tube and the lower inner half tube can be better spliced ​​together.

[0025] Further, it also includes a dust detection unit, which includes a U-shaped plate and an insert plate connected to both ends of the U-shaped plate, and the insert plate is connected to a strip test unit; the end of the inner air inlet end tube close to the lower inner half tube and the end of the outer air inlet end tube close to the lower outer half tube both have a first groove, one end of the upper inner half tube and one end of the upper outer half tube both have a second groove, and the corresponding first groove and second groove form an insertion channel inserted by the insert plate, and the U-shaped plate has a notch and a plurality of limiting holes; a locking unit is installed at the circuit board body, and the locking unit includes a fixed seat fixedly connected to the circuit board body, a rotating seat hinged to the fixed seat, a guide rod fixedly connected to the rotating seat, a card block inserted by the guide rod and capable of being inserted into the notch, a connecting plate fixedly connected to the card block, and a plurality of limiting protrusions connected to the connecting plate and capable of being inserted into the limiting holes, the card block has a guide hole matched with the guide rod, and a tension spring surrounding the guide rod is connected between the card block and the rotating seat.

[0026] Furthermore, the strip-shaped test unit is a strip-shaped test paper or a strip-shaped test cloth.

[0027] Therefore, the strip test paper or strip test cloth can adhere to dust to realize the detection of dust accumulation, and the strip test paper or strip test cloth is flexible and does not affect the flow of heat dissipation airflow.

[0028] Furthermore, the U-shaped plate includes two end plates and a strip plate connecting the two end plates.

[0029] Furthermore, the connecting plate has four limiting protrusions, and the U-shaped plate has four limiting holes; the rotating seat is connected to two guide rods, and the clamping block has two guide holes.

[0030] Furthermore, the U-shaped plate has two circular holes.

[0031] Thus, the circular hole portion is used to avoid the bolts at the inner air inlet end pipe and the bolts at the outer air inlet end pipe.

[0032] Furthermore, a processor unit, an interface unit and a memory card slot unit are installed on the circuit board body.

[0033] Beneficial effects:

[0034] 1. In the circuit board of the present application, the shielding cover unit itself does not need to be fixed. After the heat dissipation unit is disassembled, the shielding cover unit can be easily removed and placed, so that the installation and placement of the shielding cover unit is convenient.

[0035] 2. The circuit board of the present application, the shielding cover unit itself has heat dissipation fins and heat dissipation holes, thereby increasing the passive heat dissipation effect and allowing the heat to be dissipated faster.

[0036] 3. The circuit board of the present application is provided with a heat dissipation unit, which has an active heat dissipation effect on all shielding cover units, thus helping to extend the service life of electronic components.

[0037] 4. The circuit board of the present application can realize both passive heat dissipation and active heat dissipation, with greater heat dissipation selectivity and better heat dissipation effect.

[0038] 5. In the circuit board of the present application, the heat dissipation unit forms multiple shielding cover units into a whole, thereby enhancing the integrity and strength of the circuit board as a whole, and the structure of the external air cooling pipe and the internal air cooling pipe allows the thickness of the circuit board to remain relatively thin.

[0039] 6. The circuit board of the present application is more convenient for the maintenance of the heat dissipation unit itself, and when maintaining the circuit board, it is more convenient to check and maintain the dust inside the external air cooling pipe and the internal air cooling pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a diagram of the separation of components on a circuit board;

[0041] Figure 1A This is an enlarged view of area 1A;

[0042] Figure 1B This is an enlarged view of area 1B;

[0043] Figure 2 A schematic diagram of installing the shielding cover unit on the circuit board body;

[0044] Figure 2A This is an enlarged view of area 2A;

[0045] Figure 2B This is an enlarged view of area 2B;

[0046] Figure 3 Schematic diagram for installing the lower outer half pipe and the lower inner half pipe;

[0047] Figure 4 Schematic diagram of installation covering unit;

[0048] Figure 5 A schematic diagram of the process of fixing the dust detection unit using the locking unit;

[0049] Figure 6 This is a schematic diagram of fixing the dust detection unit with the locking unit.

[0050] Description of reference numerals: circuit board body 1; blind positioning hole 1.1; processor unit 1.2; plug-in interface unit 1.3; memory card slot unit 1.4; shielding cover unit 2; cover plate 2.1; side plate 2.2; positioning column 2.3; elastic pad 2.4; heat dissipation fin 2.5; heat dissipation hole 2.6; upper inner half pipe 3; inner arc convex plate 3.1; upper outer half pipe 4; outer arc convex plate 4.1; heat conducting plate 5; strip-shaped through groove 5.1; lower inner half pipe 6; inner air inlet end pipe 6.1; inner air outlet end pipe 6.2; lower outer half pipe 7; outer air inlet end pipe 7.1 ; Outgoing air end pipe 7.2; Side convex plate 8; Strip mounting seat 9; Accommodating groove 9.1; Inner arc seat 10; Inner arc groove 10.1; Outer arc seat 11; Outer arc groove 11.1; U-shaped plate 12.1; Insert plate 12.2; Strip test unit 12.3; Notch portion 12.4; Limiting hole 12.5; Circular hole portion 12.6; First groove 13; Second groove 14; Fixed seat 15.1; Rotating seat 15.2; Guide rod 15.3; Block 15.4; Connecting plate 15.5; Limiting protrusion 15.6; Tension spring 15.7. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0052] As shown in the figure, a high stability circuit board includes a circuit board body 1, a plurality of shielding cover units 2 and a heat dissipation unit, wherein the shielding cover unit 2 is installed at the circuit board body 1, the heat dissipation unit includes a covering unit, a lower inner half pipe 6 and a lower outer half pipe 7, the covering unit includes an upper inner half pipe 3, an upper outer half pipe 4 and a heat conducting portion connecting the upper outer half pipe 4 and the upper inner half pipe 3, all shielding cover units abut the heat conducting portion, the upper outer half pipe 4 and the lower outer half pipe 7 can be spliced ​​into an outer air cooling pipe, and the upper inner half pipe 3 and the lower inner half pipe 6 can be spliced ​​into an inner air cooling pipe. The shielding cover units 2 have three and are distributed in an L shape, the shielding cover units include a cover plate 2.1, a plurality of side plates 2.2 connected to the cover plate 2.1 and a plurality of positioning columns 2.3 connected to the cover plate 2.1, the ends of the positioning columns 2.3 are bonded with elastic pads 2.4, and the circuit board body 1 has a plurality of positioning blind holes 1.1 that cooperate with the positioning columns 2.3.

[0053] The heat conduction part includes three heat conduction plates 5, which correspond to the three shielding cover units 2 one by one, and each heat conduction plate 5 abuts against the cover plate 2.1 of a shielding cover unit 2. The heat conduction plate 5 has a strip-shaped through groove 5.1; the three shielding cover units 2 are located between the lower inner half-tube 6 and the lower outer half-tube 7; the upper inner half-tube 3, the upper outer half-tube 4, the lower inner half-tube 6 and the lower outer half-tube 7 each include two straight half-tubes and an arc-shaped half-tube connecting the two straight half-tubes; the lower inner half-tube 6 The two ends are respectively connected with the inner air inlet end pipe 6.1 and the inner air outlet end pipe 6.2, and the two ends of the lower outer half pipe 7 are respectively connected with the outer air inlet end pipe 7.1 and the outer air outlet end pipe 7.2; the inner air inlet end pipe 6.1, the inner air outlet end pipe 6.2, the outer air inlet end pipe 7.1 and the outer air outlet end pipe 7.2 are connected with side convex plates 8 on both sides, and the side convex plates 8 have bolt through holes, and the inner air inlet end pipe 6.1, the inner air outlet end pipe 6.2, the outer air inlet end pipe 7. 1 and the outgoing wind end pipe 7.2 each correspond to a strip-shaped mounting seat 9 fixed to the circuit board body 1, the strip-shaped mounting seat 9 has a receiving groove 9.1 and two threaded holes, the side convex plate 8 is fixedly connected to the threaded holes of the strip-shaped mounting seat 9 by bolts (the bolts are not shown in the figure); the upper inner half pipe 3 is connected to an inner arc-shaped convex plate 3.1, the upper outer half pipe 4 is connected to an outer arc-shaped convex plate 4.1, the inner arc-shaped convex plate 3.1 and the outer arc-shaped convex plate 4.1 both have Bolt through hole, the circuit board body 1 is installed with an inner arc seat 10 and an outer arc seat 11, the inner arc seat 10 has an inner arc groove 10.1 and a threaded hole, the outer arc seat 11 has an outer arc groove 11.1 and a threaded hole, the inner arc convex plate 3.1 is fixedly connected to the threaded hole of the inner arc seat 10 by bolts (the bolts are not drawn in the figure), and the outer arc convex plate 4.1 is fixedly connected to the threaded hole of the outer arc seat 11 by bolts (the bolts are not drawn in the figure).

[0054] The cover plate 2.1 of each shielding cover unit 2 has a heat dissipation fin 2.5 located in the strip-shaped through groove 5.1 of the corresponding heat conducting plate 5, and the cover plate 2.1 of the shielding cover unit 2 also has a heat dissipation hole 2.6 not covered by the corresponding heat conducting plate 5. The upper outer half tube 4 and the upper inner half tube 3 both have a first step portion, and the lower outer half tube 7 and the lower inner half tube 6 both have a second step portion matched with the first step portion. The circuit board also includes a dust detection unit, which includes a U-shaped plate 12.1 and an insert plate 12.2 connected to both ends of the U-shaped plate 12.1, and the insert plate 12.2 is connected to a strip test unit 12.3, and the strip test unit is a strip test paper or a strip test cloth; the end of the inner air inlet end tube 6.1 close to the lower inner half tube 6 and the end of the outer air inlet end tube 7.1 close to the lower outer half tube 7 both have a first groove 13, one end of the upper inner half tube 3 and one end of the upper outer half tube 4 both have a second groove 14, and the corresponding first groove and second groove form an insertion channel inserted by the insert plate 12.2, and the U-shaped plate 12.1 is It has a notch 12.4 and a plurality of limiting holes 12.5; a locking unit is installed at the circuit board body 1, and the locking unit includes a fixed seat 15.1 fixedly connected to the circuit board body 1, a rotating seat 15.2 hinged to the fixed seat 15.1, a guide rod 15.3 fixedly connected to the rotating seat 15.2, a block 15.4 inserted by the guide rod and capable of being inserted into the notch, a connecting plate 15.5 fixedly connected to the block, and a plurality of limiting protrusions 15.6 connected to the connecting plate and capable of being inserted into the limiting holes, the block 15.4 has a guide hole matched with the guide rod, and a tension spring 15.7 surrounding the guide rod is connected between the block 15.4 and the rotating seat 15.2. The connecting plate has 4 limiting protrusions, and the U-shaped plate 12.1 has 4 limiting holes; the rotating seat 15.2 is connected to 2 guide rods, and the block has 2 guide holes. The circuit board body 1 is provided with a processor unit 1.2, an interface unit 1.3 and a memory card slot unit 1.4.

[0055] Working principle: As shown in the figure, the circuit board of the present application has three shielding cover units, which can provide shielding and heat dissipation for more components. When the shielding cover unit is installed, the positioning column and the elastic pad will be inserted into the positioning blind hole. Since the elastic pad has a certain elasticity and the shielding cover unit and the heat dissipation unit are in contact, the shielding cover unit can be stably installed, and the elastic pad can ensure that the shielding cover unit is better in contact with the heat conduction plate, so as to better transfer the heat of the shielding cover unit to the heat conduction plate. By fixing the lower outer half pipe and the lower inner half pipe, and then installing the covering unit, the installation and fixing of the three shielding cover units can be achieved. In addition, the outer air cooling pipe and the inner air cooling pipe are closer to the circuit board body relative to the heat conduction plate, so that the outer air cooling pipe and the inner air cooling pipe are actually at the same height as the shielding cover unit, so that the overall thickness of the circuit board is smaller, and the heat dissipation unit will not increase too much additional thickness. After the covering unit of the present application is installed, the inner air cooling pipe and the outer air cooling pipe are in the device for installing the circuit board, and the strip through grooves, heat dissipation fins and heat dissipation holes can achieve passive heat dissipation. At the same time, internal and external air cooling pipes can also be used to achieve active heat dissipation, which provides more heat dissipation options and better heat dissipation effects.

[0056] And when installing the dust detection unit, the plug plate is inserted into the insertion channel, so that the strip detection cloth or strip detection paper (the strip detection cloth or strip detection paper is flexible) will not affect the flow of the heat dissipation airflow (when in use, the outer air inlet end tube and the inner air inlet end tube need to be connected to the airflow generating unit, for example, connected to the fan through a pipeline). When locking the dust detection unit, turn the card block outward, then press down the U-shaped plate, and then reset the card block so that the limiting protrusion and the limiting hole cooperate, and loosen the U-shaped plate to achieve the fixation of the dust detection unit. After using it for a period of time, when maintaining the device, the dust accumulation inside the outer air cooling pipe and the inner air cooling pipe can be judged according to the dust on the surface of the strip detection cloth or the strip detection paper, and it can be judged whether it is necessary to open the covering unit to clean the outer air cooling pipe and the inner air cooling pipe. When cleaning, the lower outer half pipe and the lower inner half pipe do not need to be disassembled, and only the covering unit needs to be disassembled, that is, the dust inside the outer air cooling pipe and the inner air cooling pipe can be cleaned, and the covering unit can be installed after cleaning.

[0057] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A high stability circuit board, characterized in that: It includes a circuit board body, a plurality of shielding cover units and a heat dissipation unit, wherein the shielding cover unit is installed at the circuit board body, the heat dissipation unit includes a covering unit, a lower inner half tube and a lower outer half tube, the covering unit includes an upper inner half tube, an upper outer half tube and a heat conduction portion connecting the upper outer half tube and the upper inner half tube, all the shielding cover units abut against the heat conduction portion, the upper outer half tube and the lower outer half tube can be spliced ​​into an outer air cooling tube, and the upper inner half tube and the lower inner half tube can be spliced ​​into an inner air cooling tube; The shielding cover units are provided in three pieces and are distributed in an L shape. The shielding cover units include a cover plate, a plurality of side plates connected to the cover plate, and a plurality of positioning posts connected to the cover plate. The ends of the positioning posts are bonded with elastic pads. The circuit board body has a plurality of positioning blind holes that cooperate with the positioning posts. The heat conduction part includes three heat conduction plates, which correspond to three shielding cover units one by one, each heat conduction plate abuts against the cover plate of a shielding cover unit, and the heat conduction plate has a strip-shaped through groove; the three shielding cover units are located between the lower inner half-tube and the lower outer half-tube; the upper inner half-tube, the upper outer half-tube, the lower inner half-tube and the lower outer half-tube each include two straight half-tubes and an arc-shaped half-tube connecting the two straight half-tubes; the two ends of the lower inner half-tube are respectively connected to the inner air inlet end tube and the inner air outlet end tube, and the two ends of the lower outer half-tube are respectively connected to the outer air inlet end tube and the outer air outlet end tube; the inner air inlet end tube, the inner air outlet end tube, the outer air inlet end tube and the outer air outlet end tube are all connected on both sides with side convex plates, and the side convex plates have bolt through holes, and the inner air inlet end tube, the inner air outlet end tube, the outer air inlet end tube and the outer air outlet end tube are The air outlet end tube, the external air inlet end tube and the external air outlet end tube each correspond to a strip mounting seat fixed to the circuit board body, the strip mounting seat has a accommodating groove and two threaded holes, and the side convex plate is fixedly connected to the threaded holes of the strip mounting seat by bolts; the upper inner half tube is connected to an inner arc convex plate, and the upper outer half tube is connected to an outer arc convex plate, and the inner arc convex plate and the outer arc convex plate both have bolt through holes, and the circuit board body is installed with an inner arc seat and an outer arc seat, the inner arc seat has an inner arc groove and a threaded hole, the outer arc seat has an outer arc groove and a threaded hole, the inner arc convex plate is fixedly connected to the threaded hole of the inner arc seat by bolts, and the outer arc convex plate is fixedly connected to the threaded hole of the outer arc seat by bolts.

2. The high stability circuit board according to claim 1, characterized in that: The cover plate of each shielding cover unit is provided with heat dissipation fins located in the strip-shaped through grooves of the corresponding heat conducting plate, and the cover plate of the shielding cover unit is also provided with heat dissipation holes not covered by the corresponding heat conducting plate.

3. The high stability circuit board according to claim 1, characterized in that: The upper outer half pipe and the upper inner half pipe both have a first step portion, and the lower outer half pipe and the lower inner half pipe both have a second step portion matched with the first step portion.

4. The high stability circuit board according to claim 1, characterized in that: The invention also includes a dust detection unit, which includes a U-shaped plate and a plug-in plate connected to both ends of the U-shaped plate, and the plug-in plate is connected to a strip test unit, which is a strip test paper or a strip test cloth; the end of the inner air inlet end tube close to the lower inner half tube and the end of the outer air inlet end tube close to the lower outer half tube are both provided with a first groove, one end of the upper inner half tube and one end of the upper outer half tube are both provided with a second groove, and the corresponding first groove and second groove form an insertion channel inserted by the plug-in plate, and the U-shaped plate has a notch and a plurality of limiting holes; a locking unit is installed at the circuit board body, and the locking unit includes a fixed seat fixedly connected to the circuit board body, a rotating seat hinged to the fixed seat, a guide rod fixedly connected to the rotating seat, a card block inserted by the guide rod and capable of being inserted into the notch, a connecting plate fixedly connected to the card block, and a plurality of limiting protrusions connected to the connecting plate and capable of being inserted into the limiting hole, the card block has a guide hole matched with the guide rod, and a tension spring surrounding the guide rod is connected between the card block and the rotating seat.

5. The high stability circuit board according to claim 4, characterized in that: The connecting plate is provided with four limiting protrusions, and the U-shaped plate is provided with four limiting holes; the rotating seat is connected with two guide rods, and the clamping block is provided with two guide holes.

6. The high stability circuit board according to claim 4, characterized in that: The circuit board body is provided with a processor unit, an interface unit and a memory card slot unit.

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