A solder resist electrostatically sprayed circuit board

Abstract

The utility model discloses a kind of anti-welding electrostatic spraying circuit board, it is related to circuit board field, including circuit board main body, component and device are welded in the outer wall of circuit board main body, the outer wall of circuit board main body is equipped with fixed base, the outer wall of circuit board main body is equipped with anti-static mechanism, the anti-static mechanism includes the anti-static coating of being arranged in the outer wall of circuit board main body, the outer wall of circuit board main body is fixedly installed with conducting block, and conducting block outer wall slidingly connected with placing block, and placing block outer wall fixedly installed with the limiting block of being slidably connected with fixed base, the outer wall of limiting block is equipped with wire, the outer wall of fixed base is equipped with the fixed mechanism for limiting circuit board main body. The anti-welding electrostatic spraying circuit board, by being provided with anti-static mechanism, greatly improve the electrostatic protection capability of circuit board, effectively protect the component and device that have been welded to be not electrostatic damage, significantly improve the stability and reliability of circuit board in welding and use process.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to an anti-soldering electrostatic spraying circuit board. Background Technology

[0002] Circuit boards are important electronic components and serve as the carriers for electrical connections between electronic components such as resistors, capacitors, and chips. Spray coating of circuit boards typically refers to covering the surface of the circuit board with a protective or decorative layer. This can protect the circuit board from environmental influences, while also improving its aesthetics and recognizability. Spray coating of circuit boards can also achieve higher circuit board integration, increasing the density and reliability of the circuit board.

[0003] In the prior art, Chinese Patent Publication No. CN222073464U discloses a circuit board, including: a core layer structure, which includes a first insulating dielectric layer and a first conductive line layer and a second conductive line layer disposed on both sides of the first insulating dielectric layer; the second conductive line layer includes a first electrode and a second electrode disposed at intervals; at least one resistor, one end of which is connected to the first electrode and the other end of which is connected to the second electrode, wherein the projection of the at least one resistor overlaps with the projections of the first electrode and the second electrode in the thickness direction of the circuit board. By providing at least one resistor that overlaps with the first electrode and the second electrode in the thickness direction of the circuit board to achieve electrical connection between the first electrode and the second electrode, the reliability of the circuit board product with buried resistor is improved.

[0004] Based on the above information, it is known that static electricity is generated on the surface of the circuit board during the welding process of existing technologies. This static electricity is conducted along the printed circuits on the surface of the circuit board, causing damage to the welded components. Therefore, we propose an anti-soldering electrostatic spraying circuit board. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-soldering electrostatic spraying circuit board to solve the problem mentioned in the background art that static electricity is generated on the surface of the circuit board during the soldering process, and the static electricity is conducted along the printed lines on the surface of the circuit board, causing damage to the soldered components.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solder-resistant electrostatic spray-coated circuit board, comprising a circuit board body, components welded to the outer wall of the circuit board body, a fixing seat provided on the outer wall of the circuit board body, and an antistatic mechanism for discharging static electricity from the surface of the circuit board body. The antistatic mechanism comprises an antistatic coating disposed on the outer wall of the circuit board body, a conductive block fixedly installed on the outer wall of the circuit board body, a placement block slidably connected to the outer wall of the conductive block, and a slider slidably connected to the fixing seat fixedly installed on the outer wall of the placement block. A wire is provided on the outer wall of the slider, and a fixing mechanism for limiting the position of the circuit board body is provided on the outer wall of the fixing seat.

[0007] Furthermore, a conductive copper foil layer is provided between the circuit board body and the antistatic coating, and the antistatic layer is a composite material of carbon nanotubes and conductive polymers.

[0008] Furthermore, the conductive block is cylindrical in shape and made of copper, and the conductive blocks are evenly distributed at the bottom of the circuit board body.

[0009] Furthermore, the placement block is provided corresponding to the conductive block, and the outer wall of the placement block is provided with a placement groove corresponding to the conductive block. The slider is designed in a dovetail shape, and the outer wall of the fixing seat is provided with a sliding groove corresponding to the slider. The length of the sliding groove is provided corresponding to the sliding range of the placement block. Both the placement block and the slider are made of copper.

[0010] Furthermore, the wire is provided correspondingly to the slider, and the outer wall of the fixed base is provided with a through groove for the wire to pass through, so as to discharge static electricity.

[0011] Furthermore, the fixing mechanism includes a bidirectional threaded rod rotatably mounted on the outer wall of the fixing seat, and a limit block is threadedly mounted on the outer wall of the bidirectional threaded rod. A clamping block is fixedly mounted on the outer wall of the limit block, and a buffer pad is provided on the outer wall of the clamping block. A handle is fixedly mounted on the end of the bidirectional threaded rod.

[0012] Furthermore, two sets of limiting blocks are symmetrically arranged on the outer wall of the bidirectional threaded rod, and the outer wall of the fixed seat is provided with a limiting groove corresponding to the limiting block, and the length of the limiting groove is set to correspond to the movement range of the clamping plate.

[0013] Furthermore, the clamping block is designed with an angled surface on the side close to the main body of the circuit board, and the buffer pad is located on the outer wall of the angled side of the clamping block, and the buffer pad is made of rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This anti-static spray-coated circuit board, through the setting of an anti-static mechanism, greatly enhances the electrostatic protection capability of the circuit board. The anti-static coating uses a composite material of carbon nanotubes and conductive polymers, which can effectively gather the static electricity generated on the surface of the circuit board. The conductive blocks are evenly distributed on the bottom of the circuit board. When static electricity is conducted to this point, it can be quickly guided to the conductor through the sliding connection between the placement block and the conductive block. The conductor passes through the through groove on the outer wall of the fixing base, which can smoothly conduct the static electricity to the external grounding device, thereby preventing the static electricity from being conducted along the printed circuit on the surface of the circuit board. This effectively protects the soldered components from electrostatic damage and significantly improves the stability and reliability of the circuit board during soldering and use.

[0016] 2. Furthermore, the installation of a fixing mechanism enables convenient and stable fixation of the circuit board body. Rotating the bidirectional threaded rod allows the limiting blocks, which are symmetrically arranged on the outer wall of the bidirectional threaded rod and cooperate with the limiting groove on the outer wall of the fixing seat, to move the clamping blocks synchronously. The clamping blocks are designed with an inclined surface on the side close to the circuit board body, which can more accurately position circuit boards of different specifications. The rubber buffer pad can prevent the clamping blocks from damaging the circuit board body during clamping. This not only facilitates the adjustment of the clamping block spacing to adapt to circuit board bodies of different sizes, but also improves the safety and applicability of the circuit board body during welding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the circuit board of this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the antistatic mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixing base of this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the clamping block of this utility model.

[0023] In the diagram: 1. Circuit board body; 2. Components; 3. Antistatic coating; 4. Conductive block; 5. Fixing base; 501. Slide groove; 502. Limiting groove; 6. Placement block; 601. Slider; 602. Wire; 603. Placement groove; 7. Clamping block; 701. Limiting block; 702. Buffer pad; 8. Bidirectional threaded rod; 801. Handle. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figure 1-6 This utility model provides the following technical solution: an anti-soldering electrostatic sprayed circuit board, comprising a circuit board body 1, components 2 welded to the outer wall of the circuit board body 1, a fixing seat 5 provided on the outer wall of the circuit board body 1, and an anti-static mechanism for discharging static electricity from the surface of the circuit board body 1. The anti-static mechanism includes an anti-static coating 3 disposed on the outer wall of the circuit board body 1, a conductive block 4 fixedly installed on the outer wall of the circuit board body 1, and a placement block 6 slidably connected to the outer wall of the conductive block 4. A slider 601 slidably connected to the fixing seat 5 is fixedly installed on the outer wall of the placement block 6. A wire 602 is provided on the outer wall of the slider 601. A conductive copper foil layer is provided between the circuit board body 1 and the anti-static coating 3, and the anti-static coating is provided. The layer is a composite material of carbon nanotubes and conductive polymers. The conductive block 4 is cylindrical in shape and made of copper. The conductive blocks 4 are evenly distributed at the bottom of the circuit board body 1. The placement block 6 is set corresponding to the conductive block 4. The outer wall of the placement block 6 has a placement groove 603 corresponding to the conductive block 4. The slider 601 is dovetail-shaped. The outer wall of the fixing seat 5 has a sliding groove 501 corresponding to the slider 601. The length of the sliding groove 501 is set corresponding to the sliding range of the placement block 6. Both the placement block 6 and the slider 601 are made of copper. The wire 602 is set corresponding to the slider 601. The outer wall of the fixing seat 5 has a through groove for the wire 602 to pass through, which is used to discharge static electricity.

[0026] During the electrostatic spraying process of the circuit board, the circuit board body 1 generates static electricity due to welding and other operations. At this time, the antistatic coating 3 plays a key role. The micro-conductive network formed by its carbon nanotubes and conductive polymer composite material can quickly capture and gather the static electricity on the surface of the circuit board body 1. The static electricity is conducted along the conductive network to the conductive blocks 4 evenly distributed at the bottom of the circuit board body 1. The placement block 6 is slidably connected to the conductive block 4 through the placement groove 603 opened in the outer wall. Since both the placement block 6 and the conductive block 4 are made of copper, they have good conductivity, and the static electricity can be quickly transferred from the conductive block 4 to the placement block 6. The wire 602 fixed on the outer wall of the placement block 6 leads out the static electricity. The wire 602 passes through the through groove on the outer wall of the fixing seat 5 and finally safely conducts the static electricity to the external grounding device, thereby cutting off the path of static electricity conduction along the printed circuit on the surface of the circuit board body 1 and realizing electrostatic protection for the soldered components 2.

[0027] Example 2: Based on Example 1, a fixing mechanism is also disclosed, the specific structure of which is as follows: The outer wall of the fixing base 5 is provided with a fixing mechanism for limiting the circuit board body 1. The fixing mechanism includes a bidirectional threaded rod 8 rotatably installed on the outer wall of the fixing base 5, and a limiting block 701 is threadedly installed on the outer wall of the bidirectional threaded rod 8. A clamping block 7 is fixedly installed on the outer wall of the limiting block 701. A buffer pad 702 is provided on the outer wall of the clamping block 7. A handle 801 is fixedly installed at the end of the bidirectional threaded rod 8. Two sets of limiting blocks 701 are symmetrically arranged on the outer wall of the bidirectional threaded rod 8. A limiting groove 502 corresponding to the limiting block 701 is opened on the outer wall of the fixing base 5. The length of the limiting groove 502 is set to correspond to the movement range of the clamping plate. The clamping block 7 is designed with an inclined surface on the side close to the circuit board body 1. The buffer pad 702 is located on the outer wall of the inclined side of the clamping block 7. The buffer pad 702 is made of rubber.

[0028] When the circuit board body 1 is welded and fixed, the operator rotates the handle 801 at the end of the bidirectional threaded rod 8. The symmetrically arranged limiting blocks 701 on the outer wall will move towards or away from each other along the limiting groove 502 on the outer wall of the fixing seat 5. The limiting blocks 701 drive the clamping blocks 7 to move synchronously. The inclined design of the clamping blocks 7 close to the side of the circuit board body 1 allows for automatic calibration and positioning of circuit board bodies 1 of different specifications based on its inclined angle when close to the circuit board body 1, ensuring precise fit to the edge of circuit board bodies 1 of different specifications. The rubber buffer pad 702 is located on the outer wall of the inclined side of the clamping block 7. During the clamping process of the clamping block 7 clamping the circuit board body 1, the buffer pad 702 plays a buffering role, avoiding scratches, squeezing and other damage to the circuit board body 1 caused by rigid contact. In this way, the operator can easily adjust the spacing of the clamping blocks 7 to adapt to circuit board bodies 1 of different sizes, meet the needs of stable fixation of the circuit board during welding and other operations, and improve the safety and applicability of the operation process.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solder-resistant electrostatic spray-coated circuit board, comprising a circuit board body (1), wherein components (2) are welded to the outer wall of the circuit board body (1), a fixing seat (5) is provided on the outer wall of the circuit board body (1), and an antistatic mechanism for discharging static electricity from the surface of the circuit board body (1) is provided on the outer wall of the circuit board body (1), characterized in that: The antistatic mechanism includes an antistatic coating (3) on the outer wall of the circuit board body (1), a conductive block (4) is fixedly installed on the outer wall of the circuit board body (1), and a placement block (6) is slidably connected to the outer wall of the conductive block (4), and a slider (601) slidably connected to the fixing seat (5) is fixedly installed on the outer wall of the placement block (6). The slider (601) is provided with a wire (602) on the outer wall, and the fixing seat (5) is provided with a fixing mechanism for limiting the circuit board body (1) on the outer wall.

2. The anti-soldering electrostatic spraying circuit board according to claim 1, characterized in that: A conductive copper foil layer is provided between the circuit board body (1) and the antistatic coating (3), and the antistatic layer is a composite material of carbon nanotubes and conductive polymers.

3. The anti-soldering electrostatic spraying circuit board according to claim 1, characterized in that: The conductive block (4) is cylindrical in shape and made of copper. The conductive blocks (4) are evenly distributed at the bottom of the circuit board body (1).

4. The anti-soldering electrostatic spraying circuit board according to claim 1, characterized in that: The placement block (6) is provided in correspondence with the conductive block (4), and the outer wall of the placement block (6) is provided with a placement groove (603) corresponding to the conductive block (4). The slider (601) is designed in a dovetail shape, and the outer wall of the fixing seat (5) is provided with a sliding groove (501) corresponding to the slider (601). The length of the sliding groove (501) is provided in correspondence with the sliding range of the placement block (6). Both the placement block (6) and the slider (601) are made of copper.

5. The anti-soldering electrostatic spray coating circuit board according to claim 1, characterized in that: The wire (602) is provided correspondingly to the slider (601), and the outer wall of the fixing base (5) is provided with a through groove for the wire (602) to pass through, so as to discharge static electricity.

6. The anti-soldering electrostatic spraying circuit board according to claim 1, characterized in that: The fixing mechanism includes a bidirectional threaded rod (8) rotatably mounted on the outer wall of the fixing seat (5), and a limit block (701) is threadedly mounted on the outer wall of the bidirectional threaded rod (8), and a clamping block (7) is fixedly mounted on the outer wall of the limit block (701). A buffer pad (702) is provided on the outer wall of the clamping block (7), and a handle (801) is fixedly mounted on the end of the bidirectional threaded rod (8).

7. The anti-soldering electrostatic spray-coated circuit board according to claim 6, characterized in that: Two sets of limiting blocks (701) are symmetrically arranged on the outer wall of the bidirectional threaded rod (8), and the outer wall of the fixing seat (5) is provided with a limiting groove (502) corresponding to the limiting block (701), and the length of the limiting groove (502) is set to correspond to the movement range of the clamping plate.

8. The anti-soldering electrostatic spray coating circuit board according to claim 6, characterized in that: The clamping block (7) is designed with an inclined surface on one side close to the circuit board body (1), and the buffer pad (702) is located on the outer wall of the inclined surface of the clamping block (7), and the buffer pad (702) is made of rubber.

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