Electromagnetic interference shielding structure of circuit board

Abstract

The utility model relates to the technical field of circuit boards, in particular to a circuit board electromagnetic interference shielding structure which comprises a positioning installation strip block and a circuit board body, a limiting sliding groove is formed in the side wall of the positioning installation strip block, and a clamping driving assembly is installed in the limiting sliding groove. A first clamping and positioning strip block and a second clamping and positioning strip block are installed on the clamping driving assembly, the first clamping and positioning strip block and the second clamping and positioning strip block are connected to the two sides of the circuit board body in a clamped mode and used for clamping and fixing the circuit board body, and installation sliding grooves are formed in the tops of the first clamping and positioning strip block and the second clamping and positioning strip block correspondingly; a movable adjusting assembly is installed in the installation sliding groove, a U-shaped shielding plate is installed on the movable adjusting assembly, and the circuit board body is covered with the U-shaped shielding plate. The position of the U-shaped shielding plate can be flexibly adjusted according to the size of the circuit board body, comprehensive coverage is ensured, electromagnetic interference is effectively shielded, meanwhile, circuit board bodies of different sizes can be stably installed, and practicability is higher.

Description

Technical Field

[0001] The utility model specifically relates to a circuit board electromagnetic interference shielding structure, belonging to the technical field of circuit boards. Background Art

[0002] A circuit board is a substrate used to connect and support electronic components in an electronic device. By connecting electronic components and circuits together, it realizes functions such as the layout design of complex circuits and the transmission of electrical signals. The circuit board is easily affected by interference signals, which can affect the normal operation of the circuit board through conduction or radiation, resulting in signal distortion, increased noise, and even damage to the device. It is necessary to use a circuit board electromagnetic interference shielding structure to reduce or eliminate the impact of electromagnetic interference on the circuit board. However, in the process of use, the existing circuit board electromagnetic interference shielding structure is usually fixed on the circuit board and cannot be installed on circuit boards of different sizes. It cannot achieve full coverage for circuit boards of different sizes, and the effect of preventing electromagnetic interference is not good. There are certain drawbacks in the use process.

[0003] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0004] The purpose of the present utility model is to provide a circuit board electromagnetic interference shielding structure to solve the above problems. It has the advantage of firmly clamping the circuit board body, ensuring stable installation and adapting to circuit boards of different sizes; at the same time, it can flexibly adjust the position of the U-shaped shielding plate according to the size of the circuit board body to ensure full coverage and effectively shield electromagnetic interference.

[0005] The present utility model realizes the above purpose through the following technical solutions. A circuit board electromagnetic interference shielding structure includes a positioning and mounting strip block and a circuit board body. A limiting sliding groove is opened on the side wall of the positioning and mounting strip block, and a clamping driving component is installed in the limiting sliding groove. The first clamping and positioning strip block and the second clamping and positioning strip block are installed on the clamping driving component. The first clamping and positioning strip block and the second clamping and positioning strip block are clamped on both sides of the circuit board body to clamp and fix the circuit board body. Installation sliding grooves are opened at the tops of the first clamping and positioning strip block and the second clamping and positioning strip block, and a moving and adjusting component is installed in the installation sliding grooves. A U-shaped shielding plate is installed on the moving and adjusting component. The U-shaped shielding plate covers the circuit board body. Embedding card slots are opened at both ends of the U-shaped shielding plate cover, and an extended shielding plate is installed in the embedding card slots, and the extended shielding plate is fixedly connected to the U-shaped shielding plate through a positioning bolt.

[0006] Further, in order to enable the bidirectional lead screw to rotate in the limit sliding groove through the first rotating joint, the clamping drive assembly includes the bidirectional lead screw, and the bidirectional lead screw is rotatably installed on the inner wall of one end of the limit sliding groove through the first rotating joint.

[0007] Further, in order to enable the bidirectional lead screw to rotate through the first screwing head, the first screwing head is fixedly installed at one end of the bidirectional lead screw after the bidirectional lead screw rotates through the positioning and mounting strip.

[0008] Further, in order to enable the connecting slider to slide in the limit sliding groove by controlling the rotation of the bidirectional lead screw, the connecting slider is threadedly installed on the bidirectional lead screw, and the connecting slider is slidably clamped in the limit sliding groove.

[0009] Further, in order to enable the two connecting sliders to slide synchronously in the limit sliding groove in opposite directions through the bidirectional lead screw, so as to adjust the distance between the first clamping and positioning strip and the second clamping and positioning strip, the number of connecting sliders is two, and the two connecting sliders are respectively located at the reverse thread ends of the bidirectional lead screw, and the first clamping and positioning strip and the second clamping and positioning strip are respectively fixed on the two connecting sliders.

[0010] Further, in order to enable the adjusting threaded rod to rotate in the installation sliding groove through the second rotating joint by controlling the second screwing head, the moving and adjusting assembly includes the adjusting threaded rod, the adjusting threaded rod is rotatably installed on the inner wall of one end of the installation sliding groove through the second rotating joint, and the second screwing head is fixedly installed at one end of the adjusting threaded rod after the adjusting threaded rod rotates through the first clamping and positioning strip and the second clamping and positioning strip.

[0011] Further, in order to enable the threaded slider to slide in the installation sliding groove by controlling the rotation of the adjusting threaded rod, so as to adjust the position of the U-shaped shielding plate, the threaded slider is installed on the adjusting threaded rod, the threaded slider is slidably clamped in the installation sliding groove, and the U-shaped shielding plate is fixed on the threaded slider.

[0012] Further, in order to achieve good shielding performance, both the U-shaped shielding plate and the extended shielding plate are made of aluminum.

[0013] Technical effects and advantages of the present utility model: The circuit board body is firmly clamped by the clamping drive assembly to ensure stable installation and adapt to circuit boards of different sizes; the position of the U-shaped shielding plate can be flexibly adjusted by the moving adjustment assembly, and the position of the U-shaped shielding plate can be flexibly adjusted according to the size of the circuit board body to ensure full coverage and effectively shield electromagnetic interference; the combined design of the U-shaped shielding plate and the extended shielding plate not only enhances the shielding effect but also provides good scalability to cope with circuit boards of different sizes or additional shielding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure of the clamping drive assembly of the present utility model;

[0016] Figure 3 is a schematic diagram of the installation structure of the U-shaped shielding plate of the present utility model;

[0017] Figure 4 is a schematic diagram of the structure of the moving adjustment assembly of the present utility model;

[0018] Figure 5 is a schematic diagram of the connection structure between the extended shielding plate and the U-shaped shielding plate of the present utility model;

[0019] In the figure: 1, positioning installation strip block; 2, circuit board body; 3, clamping drive assembly; 301, bidirectional lead screw; 302, first rotating joint; 303, first screwing head; 304, connecting slider; 4, first clamping positioning strip block; 5, second clamping positioning strip block; 6, moving adjustment assembly; 601, adjusting threaded rod; 602, second rotating joint; 603, second screwing head; 604, threaded slider; 7, U-shaped shielding plate; 8, extended shielding plate; 9, positioning bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5As shown in the figure, an electromagnetic interference shielding structure for a circuit board includes a positioning and mounting strip 1 and a circuit board body 2. A limiting sliding groove is formed on the side wall of the positioning and mounting strip 1, and a clamping driving component 3 is installed in the limiting sliding groove. A first clamping and positioning strip 4 and a second clamping and positioning strip 5 are installed on the clamping driving component 3. The first clamping and positioning strip 4 and the second clamping and positioning strip 5 are clamped on both sides of the circuit board body 2 to clamp and fix the circuit board body 2. The clamping driving component 3 in the limiting sliding groove is flexible and reliable, driving the first clamping and positioning strip 4 and the second clamping and positioning strip 5 to accurately clamp the circuit board body 2, realizing the stable installation of the circuit board body 2 and ensuring the stability of the circuit board body 2 during operation. Installation sliding grooves are formed at the tops of the first clamping and positioning strip 4 and the second clamping and positioning strip 5, and a moving and adjusting component 6 is installed in the installation sliding grooves. A U-shaped shielding plate 7 is installed on the moving and adjusting component 6. The U-shaped shielding plate 7 covers the circuit board body 2. Embedding card slots are formed at both ends of the U-shaped shielding plate 7, and an extended shielding plate 8 is installed in the embedding card slots. Moreover, the extended shielding plate 8 is fixedly connected to the U-shaped shielding plate 7 through a positioning bolt 9. The moving and adjusting component 6 in the installation sliding groove enables users to flexibly adjust the position of the U-shaped shielding plate 7 according to the size of the circuit board body 2, ensuring full coverage and effectively shielding electromagnetic interference. In addition, the embedding card slot design at both ends of the U-shaped shielding plate 7 is ingenious, facilitating the installation of the extended shielding plate 8 and being firmly connected through the positioning bolt 9, further enhancing the shielding effect and providing more comprehensive and reliable electromagnetic protection for the circuit board.

[0022] The clamping driving component 3 includes a bidirectional lead screw 301. The bidirectional lead screw 301 is rotationally installed on the inner wall of one end of the limiting sliding groove through a first rotating joint 302. One end of the bidirectional lead screw 301 rotates through the positioning and mounting strip 1 and is fixedly installed with a first screwing head 303. Connecting sliders 304 are threadedly installed on the bidirectional lead screw 301. The connecting sliders 304 are slidably clamped in the limiting sliding groove. The number of connecting sliders 304 is two, and the two connecting sliders 304 are respectively located at the reverse thread ends of the bidirectional lead screw 301. The first clamping and positioning strip 4 and the second clamping and positioning strip 5 are respectively fixed on the two connecting sliders 304. The bidirectional lead screw 301 is stably installed in the limiting sliding groove through the first rotating joint 302 to ensure smooth rotation without obstruction. One end of the bidirectional lead screw 301 extends to the outside of the positioning and mounting strip 1 and is fixedly installed with a first screwing head 303, facilitating user operation. The reverse thread section designed on the bidirectional lead screw 301 is threadedly connected to the two connecting sliders 304 respectively, realizing synchronous but opposite-direction movement. This design enables the two connecting sliders 304 to automatically move closer to or separate from the center when the first screwing head 303 is rotated, thereby driving the first clamping and positioning strip 4 and the second clamping and positioning strip 5 to accurately clamp or release the circuit board body 2, with simple and efficient operation.

[0023] The mobile adjustment component 6 includes an adjustment screw rod 601. The adjustment screw rod 601 is rotatably installed on the inner wall of one end of the installation chute through a second rotating joint 602. One end of the adjustment screw rod 601 rotatably passes through the first clamping and positioning strip 4 and the second clamping and positioning strip 5 and is fixedly installed with a second screwing head 603. A threaded slider 604 is installed on the adjustment screw rod 601. The threaded slider 604 is slidably clamped in the installation chute. The U-shaped shielding plate 7 is fixed on the threaded slider 604. Both the U-shaped shielding plate 7 and the extended shielding plate 8 are made of aluminum. The adjustment screw rod 601 is stably installed in the installation chute through the second rotating joint 602, and one end of it extends to the outside and is fixed with a second screwing head 603, which is convenient for users to operate. As the second screwing head 603 rotates, the adjustment screw rod 601 drives the threaded slider 604 thereon to slide smoothly in the installation chute, and the position of the U-shaped shielding plate 7 is finely adjusted according to the position of the circuit board body 2. Both the U-shaped shielding plate 7 and the extended shielding plate 8 are made of high-quality aluminum, which can effectively shield electromagnetic interference, and also have the characteristics of light weight and corrosion resistance, ensuring the stable operation of the circuit board in a complex environment, guaranteeing both the shielding effect and taking into account the convenience of use and the durability of the material.

[0024] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0025] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A circuit board shielding electromagnetic interference structure, comprising a positioning and mounting strip (1) and a circuit board body (2), characterized in that: A limiting slot is provided on the side wall of the positioning and mounting strip (1), a clamping drive assembly (3) is installed in the limiting slot, a first clamping and positioning strip (4) and a second clamping and positioning strip (5) are installed on the clamping and driving assembly (3), the first clamping and positioning strip (4) and the second clamping and positioning strip (5) are clamped on both sides of the circuit board body (2) for clamping and fixing the circuit board body (2), a mounting slot is provided on the top of the first clamping and positioning strip (4) and the second clamping and positioning strip (5), a moving adjustment assembly (6) is installed in the mounting slot, a U-shaped shielding plate (7) is installed on the moving adjustment assembly (6), the U-shaped shielding plate (7) is covered on the circuit board body (2), both ends of the U-shaped shielding plate (7) are provided with embedded slots, an extended shielding plate (8) is installed in the embedded slot, and the extended shielding plate (8) is fixedly connected to the U-shaped shielding plate (7) by positioning bolts (9).

2. The circuit board shielding electromagnetic interference structure according to claim 1, characterized in that: The clamping drive assembly (3) comprises a bidirectional lead screw (301), and the bidirectional lead screw (301) is rotatably mounted on the inner wall of one end of the limiting sliding groove via a first rotating joint (302).

3. The circuit board electromagnetic interference shielding structure according to claim 2, characterized in that: One end of the bidirectional lead screw (301) rotates through the positioning installation block (1) to be fixedly installed with a first screwing head (303).

4. The circuit board electromagnetic interference shielding structure according to claim 3, characterized in that: A connecting slider (304) is threadedly mounted on the bidirectional lead screw (301), and the connecting slider (304) is slidably engaged in the limiting sliding groove.

5. The circuit board electromagnetic interference shielding structure according to claim 4, characterized in that: There are two connecting sliders (304), and the two connecting sliders (304) are respectively located at the reverse thread ends of the bidirectional lead screw (301), and the first clamping and positioning strip block (4) and the second clamping and positioning strip block (5) are respectively fixed on the two connecting sliders (304).

6. The circuit board electromagnetic interference shielding structure according to claim 1, characterized in that: The movable adjustment component (6) comprises an adjusting threaded rod (601), and the adjusting threaded rod (601) is rotatably mounted on the inner wall of one end of the mounting slide groove via a second rotating joint (602); one end of the adjusting threaded rod (601) is rotated through the first clamping and positioning strip block (4) and the second clamping and positioning strip block (5) to be fixedly mounted with a second screwing head (603).

7. The circuit board electromagnetic interference shielding structure according to claim 6, characterized in that: A threaded slider (604) is installed on the adjusting threaded rod (601), the threaded slider (604) is slidably engaged in the installation sliding groove, and the U-shaped shielding plate (7) is fixed on the threaded slider (604).

8. The circuit board electromagnetic interference shielding structure according to claim 7, characterized in that: The U-shaped shielding plate (7) and the extended shielding plate (8) are both made of aluminum.

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