An electromagnetic shielding type anti-interference circuit board

Abstract

The utility model relates to circuit board technical field especially an electromagnetic shield type anti -interference circuit board, including circuit board main part, the top of circuit board main part is provided with a plurality of symmetrical electronic components of setting, the top of circuit board main part is fixedly installed with bottom frame through bolt, the utility model has the advantages of: when needing to overhaul electronic components, press the arc spring piece to make it separate from the clamping groove of electromagnetic shield frame, pull up electromagnetic shield top cap, make the plug -in rod pull out from the plug -in hole, can directly overhaul the electronic components in the frame, if need more comprehensive overhaul, can pull the draw plate, drive the slide plate compression spring through the connecting rod, make the clamping plate separate from the locking plate, take out electromagnetic shield frame upwards, further convenient overhaul operation. This operation step passes through the clamping structure of arc spring piece and clamping groove, has realized the quick disassembly of electromagnetic shield top cap, need not to disassemble frame to directly overhaul electronic components.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to an electromagnetic shielding anti-interference circuit board. Background Technology

[0002] Electromagnetic shielded anti-interference circuit boards are electronic circuit boards that integrate electromagnetic shielding structures. They are mainly used in various electronic devices sensitive to electromagnetic environments (such as communication equipment, medical instruments, and precision measuring instruments) to reduce the impact of external electromagnetic interference on the normal operation of the circuit, while preventing the electromagnetic signals generated by the circuit board itself from radiating outwards, thus ensuring stable operation of the equipment. Based on an insulating substrate, conductive lines and electronic components (such as chips, resistors, and capacitors) are arranged on the surface, and electromagnetic shielding covers areas susceptible to or prone to interference. The shielding covers are usually made of metallic materials (such as copper, aluminum, and iron alloys), utilizing the reflection and absorption of electromagnetic waves by the metal to form an electromagnetic isolation space.

[0003] Currently, common electromagnetically shielded anti-interference circuit boards have significant drawbacks in terms of ease of maintenance. The most prominent issue is the cumbersome disassembly process of the electromagnetic shielding cover, which affects the efficiency of electronic component repair. In existing technologies, electromagnetic shielding covers are mostly secured to the circuit board substrate or equipment housing with multiple bolts. These bolts are evenly distributed along the edges or corners of the shielding cover to ensure a tight fit between the cover and the substrate, guaranteeing the electromagnetic shielding effect. However, when electronic components on the circuit board malfunction and require repair, operators must use tools to unscrew all the fixing bolts one by one to remove the shielding cover. After repair, the bolt holes must be realigned and each bolt tightened again. The entire process involves numerous steps and is time-consuming. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide an electromagnetically shielded anti-interference circuit board to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides an electromagnetically shielded anti-interference circuit board, including a circuit board body. A plurality of symmetrically arranged electronic components are disposed on the top of the circuit board body. A base frame is fixedly mounted to the top of the circuit board body by bolts. Two symmetrically arranged locking plates are inserted into the top of the base frame. An electromagnetic shielding frame is fixedly connected to the top of the two locking plates. The bottom surface of the electromagnetic shielding frame is in contact with the top surface of the base frame. Slide grooves are provided on both the front and rear sides of the base frame. A support plate is fixedly connected to the inner wall of each slide groove. The inner wall of the slide is slidably connected to a slide plate. Two symmetrically arranged springs are fixedly connected between the slide plate and two support plates. The side of the slide plate away from the springs is in contact with a locking plate. Two snap-fit ​​plates are fixedly connected to the side of the slide plate away from the springs. Both snap-fit ​​plates are snapped into the locking plate. Several symmetrically arranged plug rods are inserted into the top surface of the electromagnetic shielding frame. An electromagnetic shielding top cover is fixedly connected to the top of the plug rods. Arc-shaped spring pieces are fixedly connected to both sides of the electromagnetic shielding top cover. The arc-shaped spring pieces are snapped into the electromagnetic shielding frame.

[0007] Preferably, in any of the above embodiments, a blocking ring is fixedly connected to the inner wall of the electromagnetic shielding frame, and the bottom surface of the electromagnetic shielding top cover is in contact with the top surface of the blocking ring.

[0008] The top surface of the electromagnetic shielding frame has several symmetrically arranged insertion holes, and several insertion rods are respectively inserted into the several insertion holes.

[0009] The top surface of the electromagnetic shielding frame is fixedly connected with several linear array positioning plates, and the positioning plates are all inserted into the top of the bottom frame.

[0010] Two symmetrically arranged connecting rods are fixedly connected to the side of the skateboard near the spring. Pull plates are fixedly connected to the side of the two connecting rods away from the skateboard. The two connecting rods are slidably connected to two support plates respectively.

[0011] The top of the bottom frame is provided with a locking groove that communicates with the sliding groove, and both locking plates are slidably connected to the bottom frame through the locking groove.

[0012] The electromagnetic shielding frame has slots on both the left and right sides, and several of the arc-shaped spring pieces are engaged with the electromagnetic shielding frame through the slots.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. To improve ease of maintenance and shorten the maintenance time for electronic components, the specific operating steps are as follows: When electronic components need maintenance, press the arc-shaped spring to disengage it from the slot of the electromagnetic shielding frame, pull the electromagnetic shielding top cover upwards to allow the plug-in rod to be pulled out of the plug-in hole, and the electronic components inside the frame can be directly inspected. For more comprehensive maintenance, pull the pull plate, which, through the connecting rod, drives the sliding plate to compress the spring, causing the snap-fit ​​plate to disengage from the locking plate, and the electromagnetic shielding frame can be removed upwards, further facilitating maintenance operations. This operating procedure, through the snap-fit ​​structure of the arc-shaped spring and the slot, enables the rapid disassembly of the electromagnetic shielding top cover, allowing direct maintenance of electronic components without disassembling the frame. This reduces the cumbersome steps required by traditional bolt connections, greatly shortens maintenance time, and improves maintenance efficiency.

[0015] 2. To facilitate individual replacement of damaged components and reduce maintenance costs, the specific operating steps are as follows: If the electromagnetic shielding top cover is damaged, press the arc-shaped spring to disengage it from the slot, and pull out the plug rod to remove the top cover for replacement; if the electromagnetic shielding frame is damaged, pull the pull plate to disengage the snap plate from the locking plate, and remove the frame for replacement; if the bottom frame is damaged, unscrew the bolts fixing the bottom frame to the circuit board body for individual replacement. This detachable design allows the electromagnetic shielding frame, bottom frame, and electromagnetic shielding top cover to be disassembled and replaced independently. When one component is damaged, it is not necessary to replace the entire shielding structure of the circuit board; only the damaged component needs to be replaced, reducing unnecessary material waste, lowering maintenance costs, and simplifying the replacement process. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the assembly of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the electromagnetic shielding frame of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the electromagnetic shielding frame of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the base frame of this utility model;

[0021] Figure 6 This is a schematic diagram of the locking plate of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the electromagnetic shielding top cover of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure at point A of this utility model.

[0024] In the diagram: 1-Circuit board body, 2-Electronic components, 3-Bottom frame, 4-Locking plate, 5-Electromagnetic shielding frame, 6-Slide groove, 7-Support plate, 8-Slide plate, 9-Spring, 10-Snap-on plate, 11-Plug-in rod, 13-Electromagnetic shielding top cover, 14-Arc-shaped spring, 15-Blocking ring, 16-Plug-in hole, 17-Positioning plate, 18-Connecting rod, 19-Pull plate, 20-Locking groove, 21-Snap-in slot. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0026] like Figures 1 to 8 As shown, an electromagnetic shielding anti-interference circuit board includes a circuit board body 1. Several symmetrically arranged electronic components 2 are disposed on the top of the circuit board body 1. A base frame 3 is fixedly mounted to the top of the circuit board body 1 by bolts. Two symmetrically arranged locking plates 4 are inserted into the top of the base frame 3. An electromagnetic shielding frame 5 is fixedly connected to the top of the two locking plates 4. The bottom surface of the electromagnetic shielding frame 5 is in contact with the top surface of the base frame 3. Slide grooves 6 are provided on both the front and rear sides of the base frame 3. A support plate 7 is fixedly connected to the inner wall of each slide groove 6, and a sliding plate 8 is slidably connected to the inner wall of the slide groove 6. Two symmetrically arranged springs 9 are fixedly connected between the slide plate 8 and the two support plates 7. The side of the slide plate 8 away from the springs 9 is in contact with the locking plate 4. Two snap-fit ​​plates 10 are fixedly connected to the side of the slide plate 8 away from the springs 9. Both snap-fit ​​plates 10 are snapped into the locking plate 4. Several symmetrically arranged plug rods 11 are inserted into the top surface of the electromagnetic shielding frame 5. An electromagnetic shielding top cover 13 is fixedly connected to the top of the plug rods 11. Arc-shaped spring pieces 14 are fixedly connected to both sides of the electromagnetic shielding top cover 13. The arc-shaped spring pieces 14 are snapped into the electromagnetic shielding frame 5.

[0027] As an optional technical solution of this utility model, the inner wall of the electromagnetic shielding frame 5 is fixedly connected with a blocking ring 15, and the bottom surface of the electromagnetic shielding top cover 13 is in contact with the top surface of the blocking ring 15. The blocking ring 15 provides effective support and limit for the electromagnetic shielding top cover 13, ensuring close contact between the top cover and the frame, reducing gaps, thereby improving the electromagnetic shielding effect and preventing external electromagnetic interference from entering or internal electromagnetic signals from leaking out.

[0028] As an optional technical solution of this utility model, the top surface of the electromagnetic shielding frame 5 is provided with a number of symmetrically arranged insertion holes 16, and a number of insertion rods 11 are respectively inserted into the insertion holes 16. The insertion of the insertion rods 11 into the insertion holes 16 can quickly determine the relative position of the top cover and the frame, avoid the shielding gap caused by the top cover being installed crookedly, and enhance the stability of the connection between the two, ensuring that the shielding structure remains intact during equipment operation.

[0029] As an optional technical solution of this utility model, the top surface of the electromagnetic shielding frame 5 is fixedly connected with a number of linear array positioning plates 17. The positioning plates 17 are all inserted into the top of the bottom frame 3. The positioning plates 17 can quickly calibrate their position relative to the bottom frame 3 when the frame is installed, ensuring that the relative position of the frame and the circuit board body 1 is accurate, avoiding the shielding effect on the electronic components 2 due to frame offset, and enhancing the connection strength of the overall structure.

[0030] As an optional technical solution of this utility model, two symmetrically arranged connecting rods 18 are fixedly connected to the side of the slide plate 8 near the spring 9, and a pull plate 19 is fixedly connected to the side of the two connecting rods 18 away from the slide plate 8. The two connecting rods 18 are slidably connected to the two support plates 7 respectively. Pulling the pull plate 19 can drive the slide plate 8 to compress the spring 9 through the connecting rods 18, so that the snap plate 10 is disengaged from the locking plate 4, which facilitates the quick disassembly of the electromagnetic shielding frame 5. Compared with the traditional bolt connection, it saves the step of tightening the bolts one by one and improves the operation efficiency during maintenance.

[0031] As an optional technical solution of this utility model, the top of the bottom frame 3 is provided with a locking groove 20 that communicates with the sliding groove 6. Both locking plates 4 are slidably connected to the bottom frame 3 through the locking groove 20. The locking groove 20 restricts the movement trajectory of the locking plate 4, ensuring that it slides smoothly when installing or disassembling the electromagnetic shielding frame 5, avoiding the failure of the locking plate 4 due to offset, and ensuring that the locking plate 4 and the locking plate 10 are precisely matched, thereby enhancing the reliability of the connection.

[0032] As an optional technical solution of this utility model, slots 21 are provided on both the left and right sides of the electromagnetic shielding frame 5. Several arc-shaped spring pieces 14 are engaged with the electromagnetic shielding frame 5 through the slots 21. The arc-shaped spring pieces 14 are embedded in the slots 21 to form a stable engagement structure, which prevents the top cover from loosening and falling off during equipment vibration or transportation. At the same time, it is convenient to quickly disassemble the top cover for maintenance, taking into account both shielding effect and maintenance convenience.

[0033] An electromagnetically shielded anti-interference circuit board, the working principle of which is as follows:

[0034] 1): When it is necessary to repair electronic components 2, press the arc-shaped spring 14 to disengage it from the slot 21 of the electromagnetic shielding frame 5, and pull the electromagnetic shielding top cover 13 upward to pull the plug rod 11 out of the plug hole 16.

[0035] 2) If a more comprehensive inspection is required, the pull plate 19 can be pulled, and the connecting rod 18 can drive the slide plate 8 to compress the spring 9, so that the snap plate 10 can be disengaged from the locking plate 4, and the electromagnetic shielding frame 5 can be taken out upwards, which further facilitates the inspection operation.

[0036] 3) If the electromagnetic shielding top cover 13 is damaged, press the arc-shaped spring piece 14 to disengage it from the slot 21, and pull out the plug rod 11 to remove the top cover for replacement; if the electromagnetic shielding frame 5 is damaged, pull the pull plate 19 to disengage the snap plate 10 from the locking plate 4, and remove the frame for replacement.

[0037] In summary, when the electronic component 2 needs to be repaired, the arc-shaped spring piece 14 is pressed to disengage it from the slot 21 of the electromagnetic shielding frame 5, and the electromagnetic shielding top cover 13 is pulled upward to pull out the plug rod 11 from the plug hole 16, allowing direct repair of the electronic component 2 within the frame. For more comprehensive repair, the pull plate 19 can be pulled, which, through the connecting rod 18, drives the slide plate 8 to compress the spring 9, causing the snap plate 10 to disengage from the locking plate 4, and the electromagnetic shielding frame 5 can be removed upward, further facilitating the repair operation. This operating procedure, through the snap-fit ​​structure of the arc-shaped spring piece 14 and the slot 21, enables the rapid disassembly of the electromagnetic shielding top cover 13. Electronic components 2 can be directly inspected without disassembling the frame, reducing the cumbersome steps required by traditional bolt connections, significantly shortening inspection time and improving efficiency. If the electromagnetic shielding top cover 13 is damaged, press the arc-shaped spring piece 14 to disengage it from the slot 21, and pull out the plug rod 11 to remove the top cover for replacement. If the electromagnetic shielding frame 5 is damaged, pull the pull plate 19 to disengage the snap-fit ​​plate 10 from the locking plate 4, and remove the frame for replacement. If the bottom frame 3 is damaged, unscrew the bolts fixing the bottom frame 3 to the circuit board body 1 for individual replacement. This detachable design allows the electromagnetic shielding frame 5, bottom frame 3, and electromagnetic shielding top cover 13 to be disassembled and replaced independently. When one component is damaged, it is not necessary to replace the entire circuit board shielding structure; only the damaged component needs to be replaced, reducing unnecessary material waste, lowering maintenance costs, and simplifying the replacement process.

Claims

1. An electromagnetically shielded anti-interference circuit board, characterized in that: The circuit board includes a main body (1), on which several symmetrically arranged electronic components (2) are arranged. A bottom frame (3) is fixedly installed on the top of the main body (1) by bolts. Two symmetrically arranged locking plates (4) are inserted into the top of the bottom frame (3). An electromagnetic shielding frame (5) is fixedly connected to the top of the two locking plates (4). The bottom surface of the electromagnetic shielding frame (5) is in contact with the top surface of the bottom frame (3). Slide grooves (6) are provided on both the front and rear sides of the bottom frame (3). A support plate (7) is fixedly connected to the inner wall of each slide groove (6). A sliding plate (8) is slidably connected to the inner wall of the slide groove (6). The sliding plate (8) is connected to the two support plates. Two symmetrically arranged springs (9) are fixedly connected between the support plates (7). The side of the slide plate (8) away from the springs (9) is in contact with the locking plate (4). Two snap-fit ​​plates (10) are fixedly connected to the side of the slide plate (8) away from the springs (9). Both snap-fit ​​plates (10) are snapped into the locking plate (4). Several symmetrically arranged plug rods (11) are inserted into the top surface of the electromagnetic shielding frame (5). An electromagnetic shielding top cover (13) is fixedly connected to the top of the plug rods (11). Arc-shaped spring pieces (14) are fixedly connected to the left and right sides of the electromagnetic shielding top cover (13). Several arc-shaped spring pieces (14) are snapped into the electromagnetic shielding frame (5).

2. The electromagnetic shielding anti-interference circuit board according to claim 1, characterized in that: The inner wall of the electromagnetic shielding frame (5) is fixedly connected with a blocking ring (15), and the bottom surface of the electromagnetic shielding top cover (13) is in contact with the top surface of the blocking ring (15).

3. The electromagnetic shielding anti-interference circuit board according to claim 2, characterized in that: The top surface of the electromagnetic shielding frame (5) is provided with a number of symmetrically arranged insertion holes (16), and a number of insertion rods (11) are respectively inserted into the number of insertion holes (16).

4. The electromagnetic shielding anti-interference circuit board according to claim 3, characterized in that: The top surface of the electromagnetic shielding frame (5) is fixedly connected with a number of linear array positioning plates (17), and the number of positioning plates (17) are all inserted into the top of the bottom frame (3).

5. The electromagnetic shielding anti-interference circuit board according to claim 4, characterized in that: Two symmetrically arranged connecting rods (18) are fixedly connected to the side of the slide plate (8) near the spring (9). A pull plate (19) is fixedly connected to the side of the two connecting rods (18) away from the slide plate (8). The two connecting rods (18) are slidably connected to two support plates (7) respectively.

6. The electromagnetic shielding anti-interference circuit board according to claim 5, characterized in that: The top of the bottom frame (3) is provided with a locking groove (20) that communicates with the slide groove (6), and both locking plates (4) are slidably connected to the bottom frame (3) through the locking groove (20).

7. The electromagnetic shielding anti-interference circuit board according to claim 6, characterized in that: The electromagnetic shielding frame (5) has slots (21) on both the left and right sides, and several of the arc-shaped spring pieces (14) are engaged with the electromagnetic shielding frame (5) through the slots (21).

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