An anti-interference multilayer circuit board

Abstract

This utility model discloses an anti-interference multilayer circuit board, relating to the field of circuit board technology. The utility model includes a protective shell, within which multiple circuit board bodies are fixedly connected. Shielding components are arranged between adjacent circuit board bodies. Each shielding component includes a first side plate, with U-shaped seats fixedly connected to the front and rear ends of one outer wall of the first side plate. A heat dissipation component is also provided on the other outer wall of the protective shell. This utility model uses a moving frame and a drive rack to rotate a clamping plate, thereby clamping the shielding plate onto the first side plate. This facilitates the installation and removal of the shielding plate, solving the problem of inconvenient installation and removal of existing shielding structures. Simultaneously, a rotating shaft within the heat dissipation shell rotates a rotating plate relative to a fixed plate, causing misalignment of the through holes on the fixed and rotating plates, changing the heat dissipation area, and solving the problem of inconvenient adjustment of the heat dissipation area in existing systems.

Description

Technical Field

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

[0002] Circuit boards are one of the core components of electronic devices. They are electronic components that form conductive lines on an insulating substrate through processes such as printing and etching. They are used for mechanical support and electrical connection of electronic components. According to the number of layers, they can be divided into three types: single-sided boards, double-sided boards, and multi-layer boards. Among them, multi-layer circuit boards have advantages such as high-density wiring, optimized signal integrity, enhanced heat dissipation, improved mechanical strength, simplified design complexity, and adaptability to high-speed or high-frequency applications. They are widely used in computer hardware, communication equipment, automotive electronics, industrial control, aerospace and other fields.

[0003] The existing patent announcement number CN222582635U discloses an anti-interference multilayer circuit board, including a protective box, a circuit board partition device on the right side of the protective box, and a dustproof and ventilated device at the top of the protective box; the circuit board partition device includes a fixing cover plate, a mounting buckle, a U-shaped slot strip one, a U-shaped slot strip two, a circuit board, and an anti-interference frame; the dustproof and ventilated device includes a heat dissipation vent, a fixing strip, a frame, a dustproof and ventilated mesh, a threaded hole, a second fixing strip, and a threaded nail, and the anti-interference mesh can be placed in the gap of the U-shaped slot strip two;

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The anti-interference multilayer circuit board mentioned above enhances the anti-interference capability of the circuit board through the anti-interference frame. However, during use, it is not convenient to install and remove the anti-interference frame, which makes it inconvenient to inspect and replace the anti-interference frame, thereby affecting the anti-interference capability between circuit boards.

[0006] 2. The anti-interference multilayer circuit board mentioned above dissipates heat from the circuit board inside the protective box through heat dissipation vents. However, the area of ​​the heat dissipation vents is fixed during use, making it inconvenient to adjust the heat dissipation area according to actual needs. As a result, when heat dissipation is not required, the large heat dissipation area leads to more dust falling into the protective box.

[0007] To address these issues, we provide an anti-interference multilayer circuit board. Utility Model Content

[0008] The purpose of this invention is to provide an anti-interference multilayer circuit board. By moving the frame and driving the rack, the clamping plate is rotated, thereby clamping the shielding plate onto the first side plate. This facilitates the installation and removal of the shielding plate and solves the problem of the inconvenience of installing and removing the shielding structure in existing systems. At the same time, the rotating shaft inside the heat sink drives the rotating plate to rotate relative to the fixed plate, thereby causing the through holes on the fixed plate and the rotating plate to be misaligned, changing the heat dissipation area and solving the problem of the inconvenience of adjusting the heat dissipation area in existing systems.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model relates to an anti-interference multilayer circuit board, comprising a protective shell, with multiple circuit board bodies fixedly connected at equal intervals inside the protective shell. Shielding components are arranged between adjacent circuit board bodies. Each shielding component includes a first side plate fixedly connected to one outer wall of the protective shell. U-shaped seats are fixedly connected to both the front and rear ends of one outer wall of the first side plate. The U-shaped seats extend into the interior of the protective shell and engage with a shielding plate. One side of the shielding plate penetrates the first side plate and is fixedly connected to a panel. A retaining plate is rotatably connected to the other outer wall of the first side plate, with its upper and lower ends abutting against the panel. The first side plate is movable. A movable frame is connected, and multiple drive racks for driving the card plate to rotate are fixedly connected at equal intervals on the top inner side of the movable frame. A heat dissipation assembly is also provided on the outer wall of the other side of the protective shell. The heat dissipation assembly includes a second side plate fixedly connected to the outer wall of the other side of the protective shell. A filter screen is fixedly connected in the heat dissipation hole on the outer wall of the second side plate. A heat dissipation shell is fixedly connected to the air outlet end of the heat dissipation hole on the outer wall of the second side plate. A fixed plate is fixedly connected to the air inlet end of the heat dissipation shell. A rotating shaft is rotatably passed through the center of the outer wall of the fixed plate. A rotating plate is fixedly connected to the rotating shaft. The rotating plate is attached to the outer wall of the fixed plate located inside the heat dissipation shell.

[0011] A further feature of this invention is that the interior of the protective shell is fixedly connected to multiple mounting frames via a first L-shaped plate, and the circuit board body is snapped into the interior of each mounting frame.

[0012] A further feature of this invention is that a first lug is welded to one side of the outer wall of the protective shell, and a second lug is welded to the upper and lower sides of the front and rear ends of the first side plate. The first and second lugs that are adjacent to each other are fixedly connected by double-headed bolts.

[0013] A further feature of this invention is that positioning posts are welded to all four sides of the outer wall of one side of the protective shell, and positioning holes that cooperate with the positioning posts are opened on all four sides of the outer wall of the first side plate.

[0014] A further feature of this invention is that: multiple mounting rods are rotatably connected at equal intervals along the longitudinal direction to the center of the outer wall of the other side of the first side plate; the ends of the mounting rods away from the first side plate are all fixedly connected to the clamping plate; and drive gears are fixedly connected to the outer walls of the mounting rods, with the drive gears meshing below the drive rack.

[0015] A further feature of this invention is that a first mounting base is fixedly connected to the rear end of the outer wall of the other side of the first side plate, a sliding rod is movably inserted through the first mounting base, the front end of the sliding rod is fixedly connected to the rear end face of the movable frame, and the rear end of the sliding rod is fixedly connected to a limiting plate.

[0016] A further feature of this invention is that a second mounting base is fixedly connected to the front end of the outer wall of the other side of the first side plate, a threaded rod is threadedly connected to the second mounting base, the rear end of the threaded rod is fixedly connected to the front end face of the movable frame, and a first knob is fixedly connected to the front end of the threaded rod.

[0017] A further feature of this invention is that: a mounting bracket is fixedly connected to the air inlet end of the heat sink, one end of the rotating shaft located inside the heat sink is rotatably connected to the mounting bracket, and a first bevel gear is fixedly connected to the other end of the rotating shaft located outside the heat sink.

[0018] A further feature of this invention is that a drive rod is rotatably connected to the outer wall of the heat sink via a third mounting base, a second knob is fixedly connected to the top of the drive rod, and a second bevel gear is fixedly connected to the outer wall of the drive rod, with the second bevel gear meshing above the first bevel gear.

[0019] A further feature of this invention is that a second L-shaped plate is fixedly connected to both the front and rear ends of the heat sink, and the longitudinal support arms of the second L-shaped plate are fixedly connected to the second side plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model, by setting up a shielding component, rotates the first knob, which drives the threaded rod to rotate synchronously. The threaded rod drives the moving frame and the drive rack to move. The drive rack drives the mounting rod and the clamping plate to rotate through the drive gear, thereby separating the clamping plate from the panel and applying external force to the panel, thereby separating the shielding plate from the first side plate. This facilitates the inspection and replacement of the shielding plate, thus ensuring the anti-interference capability of the multilayer circuit board.

[0022] 2. This utility model, by setting up a heat dissipation component, rotates the second knob, which drives the drive rod to rotate synchronously. The drive rod drives the rotating shaft to rotate through the meshing connection between the first bevel gear and the second bevel gear. The rotating shaft drives the rotating plate to rotate relative to the fixed plate, thereby causing the through holes on the fixed plate and the rotating plate to be misaligned, thus realizing the adjustment of the heat dissipation area of ​​the heat sink, which is convenient for adjusting the heat dissipation capacity of the multilayer circuit board according to the actual situation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the protective shell of this utility model.

[0026] Figure 3 This is a schematic diagram of the circuit board body of this utility model.

[0027] Figure 4 This is a schematic diagram of the shielding component of this utility model.

[0028] Figure 5 This is a structural disassembly diagram of the card plate of this utility model.

[0029] Figure 6 This is a schematic diagram of the structure of the movable frame of this utility model.

[0030] Figure 7 This is a schematic diagram of the heat dissipation component of this utility model.

[0031] Figure 8 This is a structural disassembly diagram of the heat dissipation shell of this utility model.

[0032] Figure 9 This is a schematic diagram of the structure of the rotating plate of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1-Protective shell; 101-Circuit board body; 101a-First L-shaped plate; 101b-Mounting frame; 102-First lug; 103-Double-ended bolt; 104-Positioning post; 2-Shielding assembly; 201-First side plate; 201a-Second lug; 201b-Positioning hole; 201c-U-shaped seat; 202-Shielding plate; 202a-Panel; 203-Clamping plate; 203a-Mounting rod; 203b-Drive gear; 204-Moving frame; 204a-First mounting base; 204b-Sliding rod. 204c - Limiting plate, 205 - Drive rack, 206 - Threaded rod, 206a - Second mounting base, 206b - First knob, 3 - Heat dissipation assembly, 301 - Second side plate, 302 - Filter screen, 303 - Heat dissipation shell, 303a - Second L-shaped plate, 303b - Mounting bracket, 304 - Fixing plate, 305 - Rotating plate, 305a - Rotating shaft, 305b - First bevel gear, 306 - Drive rod, 306a - Third mounting base, 306b - Second knob, 306c - Second bevel gear. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0036] Example 1

[0037] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this is the first embodiment of the present invention. This embodiment provides an anti-interference multilayer circuit board, including a protective shell 1 in which multiple circuit board bodies 101 are fixedly connected at equal intervals. Shielding components 2 are arranged between adjacent circuit board bodies 101. The shielding components 2 include a first side plate 201, a shielding plate 202, a locking plate 203, a moving frame 204, and a driving rack 205. The moving frame 204 and the driving rack 205 drive the locking plate 203 to rotate, thereby locking the shielding plate 202 onto the first side plate 201 through the locking plate 203. This facilitates the installation and disassembly of the shielding plate 202 and solves the problem of the inconvenience of installing and disassembling the existing shielding structure.

[0038] Specifically, the first side plate 201 is fixedly connected to one outer wall of the protective shell 1. U-shaped seats 201c are fixedly connected to both the front and rear ends of one outer wall of the first side plate 201. The U-shaped seats 201c extend into the interior of the protective shell 1 and engage with a shielding plate 202. One side of the shielding plate 202 penetrates the first side plate 201 and is fixedly connected to a panel 202a. A retaining plate 203 is rotatably connected to the other outer wall of the first side plate 201. The upper and lower ends of the retaining plate 203 are both attached to the panel 202a. A movable frame 204 is movably connected to the first side plate 201. The inner top of the movable frame 204, etc. Multiple drive racks 205 are fixedly connected at intervals. The first side plate 201 is used to install the shielding plate 202 and other structures inside the protective shell 1. The U-shaped seat 201c is used to connect the shielding plate 202 to the first side plate 201. The shielding plate 202 is used to provide electromagnetic shielding between multiple circuit board bodies 101. The panel 202a and the clamping plate 203 are used to fix the shielding plate 202 on the first side plate 201. The moving frame 204 is used to drive the drive racks 205 to move. The drive racks 205 are used to drive the clamping plate 203 to rotate.

[0039] Furthermore, the interior of the protective shell 1 is fixedly connected to multiple mounting frames 101b via the first L-shaped plate 101a, and the circuit board body 101 is snapped into the interior of the mounting frame 101b.

[0040] A first ear seat 102 is welded to one side of the outer wall of the protective shell 1. A second ear seat 201a is welded to the upper and lower sides of the front and rear end faces of the first side plate 201. The first ear seat 102 and the second ear seat 201a that are adjacent to each other are fixedly connected by double-headed bolts 103.

[0041] Positioning posts 104 are welded around the outer wall of one side of the protective shell 1, and positioning holes 201b that cooperate with the positioning posts 104 are opened around the outer wall of the first side plate 201.

[0042] Multiple mounting rods 203a are rotatably connected longitudinally at equal intervals to the center of the outer wall of the other side of the first side plate 201. The end of the mounting rod 203a away from the first side plate 201 is fixedly connected to the clamping plate 203. A drive gear 203b is fixedly connected to the outer wall of the mounting rod 203a. The drive gear 203b is meshed below the drive rack 205.

[0043] A first mounting base 204a is fixedly connected to the rear end of the outer wall of the other side of the first side plate 201. A slide rod 204b is movably passed through the first mounting base 204a. The front end of the slide rod 204b is fixedly connected to the rear end surface of the movable frame 204, and the rear end of the slide rod 204b is fixedly connected to a limit plate 204c.

[0044] A second mounting base 206a is fixedly connected to the front end of the outer wall of the other side of the first side plate 201. A threaded rod 206 is threadedly connected to the second mounting base 206a. The rear end of the threaded rod 206 is fixedly connected to the front end face of the movable frame 204. A first knob 206b is fixedly connected to the front end of the threaded rod 206.

[0045] The operation process of this embodiment is as follows: Rotate the first knob 206b, the first knob 206b drives the threaded rod 206 to rotate synchronously, the threaded rod 206 drives the moving frame 204 and the driving rack 205 to move, and the driving rack 205 drives the mounting rod 203a and the clamping plate 203 to rotate through the driving gear 203b, thereby causing the clamping plate 203 to separate from the panel 202a, and applying external force to the panel 202a, thereby causing the shielding plate 202 to separate from the first side plate 201.

[0046] Example 2

[0047] Please see Figure 1 , Figure 7 , Figure 8 and Figure 9 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that a heat dissipation assembly 3 is also provided on the outer wall of the other side of the protective shell 1. The heat dissipation assembly 3 includes a second side plate 301, a filter screen 302, a heat dissipation shell 303, a fixing plate 304, and a rotating plate 305. The rotating plate 305 is driven to rotate relative to the fixing plate 304 by the rotating shaft 305a in the heat dissipation shell 303, thereby causing the through holes on the fixing plate 304 and the rotating plate 305 to be misaligned, changing the heat dissipation area and solving the problem of the existing inconvenience in adjusting the heat dissipation area.

[0048] Specifically, the second side plate 301 is fixedly connected to the outer wall of the other side of the protective shell 1. A filter screen 302 is fixedly connected to the heat dissipation holes on the outer wall of the second side plate 301. A heat dissipation shell 303 is fixedly connected to the air outlet end of the heat dissipation holes on the outer wall of the second side plate 301. A fixing plate 304 is fixedly connected to the air inlet end of the heat dissipation shell 303. A rotating shaft 305a is rotatably passed through the center of the outer wall of the fixing plate 304. A rotating plate 305 is fixedly connected to the rotating shaft 305a. The rotating plate 305 is attached to the fixing plate 304 and located inside the heat dissipation shell 303. On the outer wall, the second side plate 301 is used to seal the inside of the protective shell 1. The heat dissipation holes on the second side plate 301 are used to dissipate heat from the inside of the protective shell 1. The filter screen 302 is used to prevent dust from entering the protective shell 1. The heat dissipation shell 303 is used to install structures such as the fixing plate 304. The fixing plate 304 and the rotating plate 305 are used to adjust the heat dissipation area of ​​the heat dissipation shell 303. The rotating shaft 305a is used to install the rotating plate 305 and drive the rotating plate 305 to rotate.

[0049] Furthermore, the air inlet end of the heat sink 303 is fixedly connected to the mounting bracket 303b, one end of the rotating shaft 305a located inside the heat sink 303 is rotatably connected to the mounting bracket 303b, and the other end of the rotating shaft 305a located outside the heat sink 303 is fixedly connected to the first bevel gear 305b.

[0050] A drive rod 306 is rotatably connected to the outer wall of the heat sink 303 via a third mounting base 306a. A second knob 306b is fixedly connected to the top of the drive rod 306. A second bevel gear 306c is fixedly connected to the outer wall of the drive rod 306. The second bevel gear 306c meshes with the top of the first bevel gear 305b.

[0051] The front and rear ends of the heat sink 303 are fixedly connected to the second L-shaped plate 303a, and the longitudinal support arms of the second L-shaped plate 303a are fixedly connected to the second side plate 301.

[0052] The rest of the structure is the same as in Example 1.

[0053] The operation process of this embodiment is as follows: Rotate the second knob 306b, which drives the drive rod 306 to rotate synchronously. The drive rod 306 drives the rotating shaft 305a to rotate through the meshing connection between the first bevel gear 305b and the second bevel gear 306c. The rotating shaft 305a drives the rotating plate 305 to rotate relative to the fixed plate 304, thereby causing the through holes on the fixed plate 304 and the rotating plate 305 to be misaligned, thus realizing the adjustment of the heat dissipation area of ​​the heat sink 303.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An anti-interference multilayer circuit board, comprising a protective housing (1), characterized in that: The protective shell (1) has multiple circuit board bodies (101) fixedly connected at equal intervals inside, and shielding components (2) are provided between adjacent circuit board bodies (101). The shielding components (2) include a first side plate (201) fixedly connected to the outer wall of one side of the protective shell (1), and U-shaped seats (201c) are fixedly connected to the front and rear ends of the outer wall of one side of the first side plate (201). The U-shaped seats (201c) extend into the interior of the protective shell (1) and are snapped with a shielding plate (202). One side of the shielding plate (202) penetrates the first side plate (201) and is fixedly connected to a panel (202a). A retaining plate (203) is rotatably connected to the outer wall of the other side of the first side plate (201), and the upper and lower ends of the retaining plate (203) are attached to the panel (202a). A movable frame (204) is movably connected to the first side plate (201), and the movable frame ( Multiple drive racks (205) for driving the card plate (203) to rotate are fixedly connected at equal intervals on the top inner side of the protective shell (1). A heat dissipation assembly (3) is also provided on the outer wall of the other side of the protective shell (1). The heat dissipation assembly (3) includes a second side plate (301) fixedly connected to the outer wall of the other side of the protective shell (1). A filter screen (302) is fixedly connected in the heat dissipation hole on the outer wall of the second side plate (301). A heat dissipation shell (303) is fixedly connected to the air outlet end of the heat dissipation hole on the outer wall of the second side plate (301). A fixed plate (304) is fixedly connected to the air inlet end of the heat dissipation shell (303). A rotating shaft (305a) is rotatably passed through the center of the outer wall of the fixed plate (304). A rotating plate (305) is fixedly connected to the rotating shaft (305a). The rotating plate (305) is attached to the outer wall of the fixed plate (304) located inside the heat dissipation shell (303). A first mounting base (204a) is fixedly connected to the rear end of the outer wall of the other side of the first side plate (201), and a sliding rod (204b) is movably passed through the first mounting base (204a). The front end of the sliding rod (204b) is fixedly connected to the rear end face of the movable frame (204), and the rear end of the sliding rod (204b) is fixedly connected to a limiting plate (204c). The air inlet end of the heat sink (303) is fixedly connected to a mounting bracket (303b), and one end of the rotating shaft (305a) located inside the heat sink (303) is rotatably connected to the mounting bracket (303b). The one end of the rotating shaft (305a) located outside the heat sink (303) is fixedly connected to a first bevel gear (305b). A drive rod (306) is rotatably connected to the outer wall of the heat sink (303) via a third mounting base (306a), and a second knob (306b) is fixedly connected to the top of the drive rod (306). A second bevel gear (306c) is fixedly connected to the outer wall of the drive rod (306), and the second bevel gear (306c) meshes with the top of the first bevel gear (305b). The front and rear ends of the heat sink (303) are fixedly connected to the second L-shaped plate (303a), and the longitudinal support arms of the second L-shaped plate (303a) are fixedly connected to the second side plate (301).

2. The anti-interference multilayer circuit board according to claim 1, characterized in that, The protective shell (1) has multiple mounting frames (101b) fixedly connected inside by a first L-shaped plate (101a), and the circuit board body (101) is snapped into the inside of the mounting frame (101b).

3. The anti-interference multilayer circuit board according to claim 1, characterized in that, The protective shell (1) has a first ear seat (102) welded on one side of the outer wall, and a second ear seat (201a) is welded on the upper and lower sides of the front and rear end faces of the first side plate (201). The first ear seat (102) and the second ear seat (201a) that are adjacent to each other are fixedly connected by double-headed bolts (103).

4. The anti-interference multilayer circuit board according to claim 3, characterized in that, The protective shell (1) has positioning posts (104) welded around its outer wall on one side, and the outer wall of the first side plate (201) has positioning holes (201b) that cooperate with the positioning posts (104) around its outer wall.

5. The anti-interference multilayer circuit board according to claim 1, characterized in that, Multiple mounting rods (203a) are rotatably connected at equal intervals along the longitudinal direction on the center of the outer wall of the other side of the first side plate (201), and the end of the mounting rod (203a) away from the first side plate (201) is fixedly connected to the clamping plate (203). A drive gear (203b) is fixedly connected to the outer wall of the mounting rod (203a), and the drive gear (203b) is meshed below the drive rack (205).

6. The anti-interference multilayer circuit board according to claim 1, characterized in that, A second mounting base (206a) is fixedly connected to the front end of the outer wall of the other side of the first side plate (201), and a threaded rod (206) is threadedly connected to the second mounting base (206a). The rear end of the threaded rod (206) is fixedly connected to the front end face of the movable frame (204), and a first knob (206b) is fixedly connected to the front end of the threaded rod (206).

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