PCBA (printed circuit board assembly) anti-static structure

Abstract

The utility model provides an anti-static structure of a PCBA board, and belongs to the technical field of PCBA boards. Comprising a circuit board and further comprises an anti-static assembly, the anti-static assembly comprises a mounting plate fixed to the circuit board, a protective cover is fixed to the top of the mounting plate, two rotating discs are rotationally connected to the top of the mounting plate, the two rotating discs are electrically connected with the circuit board, and a plurality of protrusions are fixed to the side faces of the rotating discs. According to the utility model, the rotating disc and the bulges are arranged, the rotating disc and the bulges are rotationally connected in the mounting plate and the protective cover, and the rotating disc and the bulges are connected with the circuit board through the wires, so that when the circuit board generates static electricity, charges are conducted to the rotating disc and the bulges through the wires, and static electricity consumption is carried out by utilizing discharge gaps between the adjacent bulges; as the service time is prolonged, carbon deposits are formed on the surfaces of the protrusions, the discharge performance is affected, at the moment, the rotating disc is rotated to drive the protrusions to rotate, the adjacent protrusions form effective discharge gaps again, the discharge capacity is recovered, and continuous and stable protection on the circuit board is ensured.

Description

Technical Field

[0001] This utility model relates to the field of PCBA board technology, and in particular to an anti-static structure for PCBA boards. Background Technology

[0002] PCBA boards are finished boards made by soldering electronic components onto printed circuit boards (PCBs) using surface mount technology (SMT) or through-hole technology (THT). They consist of PCBs, electronic components, and soldering materials. The anti-static structure of a PCBA board typically uses two lead-in terminals, utilizing a discharge gap between them to achieve electrostatic protection. When static electricity is generated on the PCBA board, the lead-in terminals attract the static electricity and dissipate it through the discharge gap, thus protecting the circuit board. However, in dry environments, the amount of static electricity generated increases significantly, requiring continuous discharge from the lead-in terminals. Prolonged operation can lead to carbon buildup on the surface of the lead-in terminals, reducing their discharge capacity and weakening the protective effect on the PCBA board. Existing anti-static structures still need optimization in achieving stable protection. Therefore, this application provides an anti-static structure for PCBA boards to meet this requirement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an anti-static structure for PCBA boards to solve the problem that long-term operation will cause carbon deposits to form on the surface of the leads, resulting in a decrease in their discharge capacity and thus weakening the protective effect on the PCBA board.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] An anti-static structure for a PCBA board includes a circuit board and further includes:

[0006] An antistatic assembly includes a mounting plate fixed on a circuit board, a protective cover fixed on the top of the mounting plate, two rotating disks rotatably connected to the top of the mounting plate, both rotating disks being electrically connected to the circuit board, several protrusions fixed on the sides of the rotating disks, and discharge gaps formed between adjacent protrusions, with a cylindrical top of the rotating disks movably penetrating through the protective cover.

[0007] Preferably, a handle is fixed to the end of the top cylinder of the rotating disk, and the handle is hollowed out.

[0008] Preferably, the top of the handle is provided with a marking line, which corresponds to the protrusion.

[0009] Preferably, the protrusion is a square pyramid shape, and the top and bottom planes of the protrusion are inclined planes.

[0010] Preferably, two symmetrically arranged friction blocks are fixed to the top of the inner wall of the protective cover and the top of the mounting plate. After the protective cover is fixed, the bottom of the friction block on the protective cover is attached to the top of the friction block on the mounting plate. The opposite surfaces of the friction blocks are provided with inclined surfaces two. The inclination angles of inclined surfaces one and two are the same, and inclined surfaces two are attached to the surface of inclined surfaces one.

[0011] Preferably, the friction block has an arc-shaped chamfer at its edge.

[0012] Compared with the prior art, this utility model has at least the following beneficial effects:

[0013] In the above solution, a rotating disk and protrusions are rotatably connected inside the mounting plate and protective cover. The rotating disk and protrusions are connected to the circuit board via wires. When the circuit board generates static electricity, the charge is conducted to the rotating disk and protrusions through the wires. The static electricity is dissipated by the discharge gap between adjacent protrusions. As the usage time increases, carbon deposits will form on the surface of the protrusions, affecting the discharge performance. At this time, rotating the rotating disk will drive the protrusions to rotate, so that the adjacent protrusions can re-form an effective discharge gap, restore the discharge capability, and ensure continuous and stable protection of the circuit board.

[0014] By setting a handle and marking lines, the top of the handle is wider than the bottom, which increases the contact area with the hand, making it easier for the operator to adjust the position of the rotating disk and the protrusions. Since the marking lines correspond to the positions of the protrusions, the operator can quickly judge whether adjacent protrusions are aligned by using the marking lines, thus making it easier to adjust the position of the protrusions on the rotating disk.

[0015] By setting up inclined plane one, friction block and inclined plane two, the upper and lower friction blocks are attached to the raised surface and apply friction force, so that the rotating disk and the raised surface are not easy to rotate at will when the circuit board is in use, which improves the stability of the raised surface, ensures its discharge capability, and achieves stable protection for the circuit board. At the same time, the friction blocks attached to the raised surface can clean the carbon deposits on its surface, restore the raised surface's discharge capability, and enhance the durability of the device. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the antistatic component of this utility model;

[0019] Figure 3 This is a cross-sectional view of the protective cover of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the rotating disk of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the friction block of this utility model.

[0022] In the diagram: 1. Circuit board; 2. Antistatic components; 3. Mounting plate; 4. Protective cover; 5. Rotating disc; 6. Protrusion; 7. Surface 1; 8. Handle; 9. Marking line; 10. Friction block; 11. Surface 2.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0024] The following is a detailed description of an anti-static structure for a PCBA board provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0025] like Figures 1-5 As shown, an embodiment of this utility model provides an anti-static structure for a PCBA board, including a circuit board 1, and further comprising:

[0026] The anti-static component 2 includes a mounting plate 3 fixed to the circuit board 1. A protective cover 4 is fixed to the top of the mounting plate 3. Two rotating disks 5 are rotatably connected to the top of the mounting plate 3, and both rotating disks 5 are electrically connected to the circuit board 1. Several protrusions 6 are fixed to the sides of the rotating disks 5, and discharge gaps are formed between adjacent protrusions 6. The cylindrical top of the rotating disk 5 moves through the protective cover 4. The mounting plate 3 and the protective cover 4 provide installation and protection space for the rotating disks 5 and the protrusions 6, preventing external interference. When the circuit board 1 generates static electricity, the charge is conducted to the rotating disks 5 and the protrusions 6 through the wires. The static electricity is released using the discharge gaps between adjacent protrusions 6, thus achieving electrostatic protection for the circuit board 1. With use, when carbon buildup on the surface of the protrusions 6 affects the discharge performance, rotating the rotating disks 5 allows adjacent protrusions 6 to reform an effective discharge gap, ensuring the continuity and stability of the protection.

[0027] like Figures 1-3As shown, in this embodiment, a handle 8 is fixed to the end of the top cylinder of the rotating disk 5. The handle 8 is hollowed out, and the top width of the hollowed-out handle 8 is greater than the bottom width, which increases the contact area with the hand, making it easier for the operator to hold and rotate the rotating disk 5 more easily and effortlessly, thereby adjusting the position of the protrusion 6. This facilitates timely adjustment when carbon accumulates on the protrusion 6, maintains the effectiveness of the discharge gap, and ensures electrostatic protection of the circuit board 1.

[0028] like Figures 1-5 As shown, in this embodiment, the top of the handle 8 is provided with a marking line 9, which corresponds to the position of the protrusion 6. The operator can quickly determine whether the adjacent protrusion 6 is in a suitable alignment position by observing the marking line 9, avoid blind rotation, improve adjustment efficiency, accurately adjust the position of the protrusion 6 on the rotating disk 5, ensure the effective discharge gap, and guarantee the anti-static effect.

[0029] like Figure 4 As shown, in this embodiment, the protrusion 6 is a square pyramid shape, and the top and bottom planes of the protrusion 6 are inclined surfaces 7. The square pyramid shape of the protrusion 6 makes the ends pointed, which is conducive to static electricity release. The design of the inclined surface 7 allows the protrusion 6 to fit tightly with the inclined surface 11 of the friction block 10. On the one hand, the friction force restricts the rotation of the rotating disk 5 and the protrusion 6, ensuring the stability of the discharge gap; on the other hand, during the friction process, it is convenient for the friction block 10 to clean the carbon deposits on the surface of the protrusion 6 and restore its discharge capacity.

[0030] like Figures 3-5 As shown, in this embodiment, two symmetrically arranged friction blocks 10 are fixed to the top of the inner wall of the protective cover 4 and the top of the mounting plate 3. After the protective cover 4 is fixed, the bottom of the friction block 10 on the protective cover 4 is attached to the top of the friction block 10 on the mounting plate 3. The opposite surfaces of the friction blocks 10 are provided with inclined surfaces 11. The inclined surfaces 11 and 7 have the same inclination angle. The inclined surfaces 11 are attached to the surface of the inclined surfaces 17. The friction blocks 10, which are symmetrically arranged and whose inclined surfaces 11 are attached to the inclined surfaces 17, apply a stable friction force to the protrusion 6, restricting the rotating disk 5 and the protrusion 6 from rotating freely during the use of the circuit board 1, ensuring the stability of the discharge gap of the protrusion 6, and achieving stable protection for the circuit board 1. At the same time, during the friction process, the friction blocks 10 can effectively clean the carbon deposits on the surface of the protrusion 6, restore its discharge performance, and extend the service life of the device.

[0031] like Figure 5 As shown, in this embodiment, the edge of the friction block 10 is provided with an arc-shaped chamfer. The arc-shaped chamfer design of the edge of the friction block 10 reduces the wear between the protrusion 6 and the edge of the friction block 10 when the protrusion 6 enters between the two friction blocks 10, reduces the risk of generating debris due to friction, ensures the safety and stability of the device operation, and helps the friction block 10 and the protrusion 6 to fit and rub smoothly, thus improving the effect of cleaning carbon deposits.

[0032] Working principle: When the circuit board 1 generates static electricity, the charge is conducted through the wire to the rotating disk 5 electrically connected to the circuit board 1 and the protrusion 6 fixed on its side. The static electricity is consumed by the discharge gap between adjacent protrusions 6. With use, carbon deposits form on the surface of the protrusions 6, affecting the discharge performance. The operator holds the hollow handle 8 at the top cylindrical end of the rotating disk 5 and rotates the rotating disk 5, which drives the protrusions 6 to rotate, so that the adjacent protrusions 6 can re-form an effective discharge gap. Since the marking line 9 set on the top of the handle 8 corresponds to the position of the protrusions 6, the operator can quickly judge whether the adjacent protrusions 6 are aligned by the marking line 9, or align them by the transparent protective cover 4, so as to accurately adjust the position of the protrusions 6 on the rotating disk 5.

[0033] During the use of circuit board 1, friction blocks 10, which are symmetrically arranged on the top of the inner wall of the protective cover 4 and the top of the mounting plate 3, are attached to the surface of the protrusion 6. The inclined surface 11 of the opposite side of the friction block 10 has the same inclination angle as the inclined surface 7 of the top and bottom planes of the protrusion 6 and is attached to each other. By applying friction, the rotating disk 5 and the protrusion 6 are restricted from rotating freely, thereby improving the stability of the protrusion 6 and ensuring its discharge capability. At the same time, during the contact process with the protrusion 6, the friction block 10 can clean the carbon deposits on the surface of the protrusion 6 and restore its discharge capability, ensuring that the antistatic component 2 continuously and stably protects the circuit board 1.

[0034] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An anti-static structure for a PCBA board, comprising a circuit board (1), characterized in that, Also includes: The antistatic assembly (2) includes a mounting plate (3) fixed on the circuit board (1), a protective cover (4) fixed on the top of the mounting plate (3), two rotating disks (5) rotatably connected to the top of the mounting plate (3), both rotating disks (5) being electrically connected to the circuit board (1), a number of protrusions (6) fixed on the side of the rotating disks (5), a discharge gap being formed between adjacent protrusions (6), and the top cylinder of the rotating disks (5) movably penetrating the protective cover (4).

2. The PCBA board anti-static structure according to claim 1, characterized in that, The top cylindrical end of the rotating disk (5) is fixed with a handle (8), which is hollowed out.

3. The PCBA board anti-static structure according to claim 2, characterized in that, The top of the handle (8) is provided with a marking line (9), which corresponds to the position of the protrusion (6).

4. The PCBA board anti-static structure according to claim 1, characterized in that, The protrusion (6) is a square pyramid shape, and the top and bottom planes of the protrusion (6) are inclined planes (7).

5. The PCBA board anti-static structure according to claim 1, characterized in that, The top of the inner wall of the protective cover (4) and the top of the mounting plate (3) are both fixed with two symmetrically arranged friction blocks (10). After the protective cover (4) is fixed, the bottom of the friction block (10) on the protective cover (4) is attached to the top of the friction block (10) on the mounting plate (3). The opposite surfaces of the friction blocks (10) are provided with inclined surfaces two (11). The inclined surfaces one (7) and the inclined surfaces two (11) have the same inclination angle. The inclined surfaces two (11) are attached to the surface of the inclined surfaces one (7).

6. The PCBA board anti-static structure according to claim 5, characterized in that, The friction block (10) has an arc-shaped chamfer at its edge.

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