A circuit board with anti-interference structure

Abstract

The utility model discloses a circuit board with an anti-interference structure, comprising a main body and a shielding mesh cover installed on the top of the main body, wherein seat blocks are fixed at both ends of the bottom of the shielding mesh cover, and two side seats are symmetrically fixed to the top surface of the main body, and the two seat blocks are respectively fitted with the two side seats, and a limiting clip strip is rotatably installed on the top of the side seat, and a clamping limiting structure is arranged between the limiting clip strip and the side seat, a positioning block is fixed on the inner surface of the side seat, and a positioning groove corresponding to the positioning block is opened on the bottom end surface of the seat block; the utility model improves the circuit board in the prior art, and designs a seat block, a side seat, a limiting clip strip, a strip-shaped clip groove and a clamping limiting structure between the shielding mesh cover and the main body, which can greatly improve the convenience of disassembly and assembly of the shielding mesh cover, bring convenience to the early installation and subsequent disassembly of the shielding mesh cover, and improve the convenience of later maintenance of the entire circuit board.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit boards, and in particular relates to a circuit board with an anti-interference structure. Background Art

[0002] A circuit board is also called a printed circuit board, which is used to carry and connect various electrical components. For example, a display motherboard is set inside a display. This display motherboard is a common circuit board. In order to prevent electromagnetic interference, some circuit boards will install a shielding mesh cover on the circuit board. For example, the existing patent with publication number CN205793609U discloses "an electromagnetic interference-proof circuit board structure, including a circuit board body, the upper surface and the lower surface of the circuit board body are both provided with grooves corresponding to the position, the groove is provided with a through hole penetrating the circuit board body, the bottom surface of the upper surface groove and the lower surface groove and the inner wall of the through hole are covered with a conductive layer, and the conductive layer of the upper surface groove and the lower surface groove is provided with an insulating layer". It can be seen that the application describes a common electromagnetic interference-proof circuit board;

[0003] However, when the electromagnetic interference protection circuit board in the above patent is actually used, the shielding mesh cover thereon is generally fixed on the top of the circuit board body by a plurality of screws and other structures, resulting in that the shielding mesh cover is not convenient to disassemble and assemble. If the electronic components on the circuit board need to be inspected and maintained at a later time, these screws need to be removed one by one, and it will take a lot of time to remove the shielding mesh cover, which reduces the overall maintenance convenience of the circuit board. Therefore, the present invention needs to improve and optimize the existing circuit board with an anti-interference structure. Utility Model Content

[0004] The utility model aims to provide a circuit board with an anti-interference structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board with an anti-interference structure, comprising a main body and a shielding mesh cover installed on the top of the main body, the bottom ends of the shielding mesh cover are fixed with seat blocks, the top surface of the main body is symmetrically fixed with two side seats, the two seat blocks are respectively fitted with the two side seats, the top of the side seat is rotatably installed with a limit card strip, the outer surface of the seat block is provided with a strip card slot corresponding to the limit card strip, the end of the limit card strip is screwed into the inner side of the strip card slot, the limit card strip and the side seat A locking limit structure is arranged between the two, a positioning block is fixed on the inner surface of the side seat, a positioning groove corresponding to the positioning block is opened on the bottom surface of the seat block, and the positioning block slides into the positioning groove, and the locking limit structure comprises an inner groove, a spring, a telescopic bead and a limiting groove, the inner groove is opened inside the side seat, the telescopic bead is movably installed in the inner groove by the spring, and a limiting groove corresponding to the telescopic bead is opened on the bottom surface of the limiting card strip, and the top end of the telescopic bead pops out to the top of the side seat and is locked into the limiting groove.

[0006] Preferably, a T-shaped shaft is fixed to the top surface of the side seat, and the limiting clamping strip is rotatably sleeved on the T-shaped shaft.

[0007] Preferably, the bottom end of the spring is fixed to the inner wall of the inner groove, and the top end of the spring is fixed to the bottom end surface of the telescopic bead by welding.

[0008] Preferably, an auxiliary positioning structure is also provided between the positioning block and the positioning groove, the auxiliary positioning structure includes a rubber inner pad, a positioning protrusion and a positioning slot, the inner wall of the positioning slot is fixed with a rubber inner pad, the surface of the rubber inner pad is provided with a positioning protrusion, the surface of the positioning block is provided with a positioning slot corresponding to the positioning protrusion, the positioning protrusion is embedded in the positioning slot, the interior of the rubber inner pad is provided with an elliptical cavity whose position corresponds to the positioning protrusion, and the rubber inner pad and the positioning protrusion are an integrated structure.

[0009] Preferably, reserved mounting holes are provided at the four corners of the main body, and the reserved mounting holes are circular.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model improves the circuit board in the prior art, and designs a seat block, a side seat, a limit clip, a bar slot and a snap-in limit structure between the shielding mesh cover and the main body, which can greatly improve the convenience of disassembly and assembly of the shielding mesh cover, and brings convenience to the early installation and subsequent disassembly of the shielding mesh cover, thereby making it convenient for later operators to remove the shielding mesh cover to inspect and maintain the electronic components on the main body, thereby improving the convenience of later maintenance of the entire circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1It is a three-dimensional diagram of the utility model;

[0012] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A area;

[0013] Figure 3 It is a cross-sectional view of the connection between the limit clamping strip and the seat block of the utility model;

[0014] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle B area;

[0015] In the figure: 1. main body; 2. seat block; 21. positioning groove; 22. rubber inner pad; 23. positioning protrusion; 3. shielding mesh cover; 4. side seat; 41. positioning block; 42. positioning slot; 5. limiting card strip; 6. strip card slot; 7. T-shaped shaft rod; 81. inner groove; 82. spring; 83. telescopic card bead; 84. limiting card slot. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example 1

[0018] See also Figures 1 to 3, which is the first embodiment of the utility model, and this embodiment provides a technical solution: a circuit board with an anti-interference structure, comprising a main body 1 and a shielding mesh cover 3 installed on the top of the main body 1, the shielding mesh cover 3 is a mesh structure woven by conductive metal, has a good shielding effect, and can effectively shield external electromagnetic radiation interference in the high frequency range, the bottom ends of the shielding mesh cover 3 are welded and fixed with seat blocks 2, the top surface of the main body 1 is symmetrically fixed with two side seats 4, the two seat blocks 2 are respectively fitted with the two side seats 4, and the top of the side seat 4 is rotatably installed with a limiting card strip 5, the outer surface of the seat block 2 is provided with a strip card groove 6 corresponding to the limiting card strip 5, the end of the limiting card strip 5 is screwed into the inner side of the strip card groove 6, and the seat block 2 can be limited in the vertical direction, and a clamping limiting structure is provided between the limiting card strip 5 and the side seat 4, which is used to limit the limiting card strip 5 itself, and the inner surface of the side seat 4 is welded and fixed with a fixed The bottom surface of the seat block 2 is provided with a positioning groove 21 corresponding to the positioning block 41. The positioning block 41 slides into the positioning groove 21, so that when the seat block 2 moves down to one side of the side seat 4, the positioning block 41 will slide into the inner side of the positioning groove 21, thereby limiting the seat block 2 in the horizontal direction to ensure the installation stability of the seat block 2. The engaging and limiting structure includes an inner groove 81, a spring 82, a telescopic card bead 83 and a limiting card groove 84. The inner groove 81 is provided inside the side seat 4, and the telescopic card bead 83 is movably installed in the inner groove 81 by the spring 82. The bottom surface of the limiting card strip 5 is provided with a limiting card groove 84 corresponding to the telescopic card bead 83. The top end of the telescopic card bead 83 pops out to the top of the side seat 4 and is inserted into the limiting card groove 84, so that the limiting card strip 5 can be engaged and limited, ensuring that the limiting card strip 5 can stably limit the seat block 2 in daily use, and ensuring the installation stability of the seat block 2 and the shielding mesh cover 3.

[0019] A T-shaped shaft rod 7 is fixed to the top surface of the side seat 4 , and the limit clamping strip 5 is rotatably sleeved on the T-shaped shaft rod 7 , so that the limit clamping strip 5 can rotate smoothly.

[0020] The bottom end of the spring 82 is fixed to the inner wall of the inner groove 81 , and the top end of the spring 82 is welded and fixed to the bottom end surface of the telescopic bead 83 to ensure the installation stability of the spring 82 .

[0021] Among them, reserved installation holes are opened at the four corners of the main body 1, and the reserved installation holes are circular.

[0022] Example 2

[0023] See also Figures 1 to 4, which is the second embodiment of the utility model. This embodiment is based on the previous embodiment, and the difference is that an auxiliary positioning structure is further provided between the positioning block 41 and the positioning groove 21, and the auxiliary positioning structure includes a rubber inner pad 22, a positioning protrusion 23 and a positioning card groove 42. The inner wall of the positioning groove 21 is glued and fixed with a rubber inner pad 22, and the surface of the rubber inner pad 22 is provided with a positioning protrusion 23. The surface of the positioning block 41 is provided with a positioning card groove 42 corresponding to the positioning protrusion 23, and the positioning protrusion 23 is embedded in the positioning card groove 42, so that when the seat block 2 is pressed down for installation, the positioning block 41 will slide into the positioning groove 21, and the positioning protrusion 23 will be squeezed into the positioning card groove 42, thereby playing a certain auxiliary positioning effect on the seat block 2, and facilitating subsequent operations. The personnel screw the end of the limit card strip 5 into the inner side of the strip slot 6, and perform a certain auxiliary positioning effect on the seat block 2 when the limit card strip 5 has not yet been screwed into the inner side of the strip slot 6. If the shielding mesh cover 3 needs to be removed later, it is only necessary to push the limit card strip 5 with force to make the limit card strip 5 rotate around the T-shaped shaft rod 7, and make the top of the telescopic card bead 83 gradually squeezed into the inner groove 81 until the top of the telescopic card bead 83 is squeezed out of the limit card slot 84, and the end of the limit card strip 5 can be smoothly screwed out from the inner side of the strip slot 6, thereby releasing the limit on the seat block 2. At this time, the shielding mesh cover 3 can be lifted to make the positioning block 41 move out of the positioning slot 21, and the shielding mesh cover 3 can be smoothly removed, thereby improving the convenience of disassembly and assembly of the shielding mesh cover 3.

[0024] The rubber inner pad 22 has an elliptical cavity corresponding to the positioning protrusion 23, so that the positioning protrusion 23 has sufficient deformation space when squeezed. The rubber inner pad 22 and the positioning protrusion 23 are an integrated structure, and both are made of rubber material.

[0025] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board with an anti-interference structure, comprising a main body (1) and a shielding mesh cover (3) mounted on the top of the main body (1), characterized in that: A seat block (2) is fixed at both ends of the bottom of the shielding mesh cover (3); two side seats (4) are symmetrically fixed on the top surface of the main body (1); the two seat blocks (2) are respectively fitted with the two side seats (4); a limit clamping strip (5) is rotatably installed on the top of the side seat (4); a strip-shaped clamping groove (6) corresponding to the limit clamping strip (5) is opened on the outer surface of the seat block (2); the end of the limit clamping strip (5) is screwed into the inner side of the strip-shaped clamping groove (6); a clamping limit structure is arranged between the limit clamping strip (5) and the side seat (4); a positioning block (41) is fixed on the inner surface of the side seat (4); a positioning groove (21) corresponding to the positioning block (41) is opened on the bottom end surface of the seat block (2); the positioning block (41) slides into the positioning groove (21).

2. The circuit board with an anti-interference structure according to claim 1, characterized in that: A T-shaped shaft rod (7) is fixed to the top surface of the side seat (4), and the limit clamping strip (5) is rotatably sleeved on the T-shaped shaft rod (7).

3. The circuit board with an anti-interference structure according to claim 1, characterized in that: The engaging limiting structure comprises an inner groove (81), a spring (82), a telescopic card bead (83) and a limiting card groove (84); the inner groove (81) is arranged inside the side seat (4); the telescopic card bead (83) is movably installed in the inner groove (81) through the spring (82); a limiting card groove (84) corresponding to the telescopic card bead (83) is arranged on the bottom surface of the limiting card strip (5); the top end of the telescopic card bead (83) pops out to the top of the side seat (4) and is inserted into the limiting card groove (84).

4. The circuit board with an anti-interference structure according to claim 3, characterized in that: The bottom end of the spring (82) is fixed to the inner wall of the inner groove (81), and the top end of the spring (82) is welded and fixed to the bottom end surface of the telescopic clamping bead (83).

5. The circuit board with an anti-interference structure according to claim 1, characterized in that: An auxiliary positioning structure is also provided between the positioning block (41) and the positioning groove (21), and the auxiliary positioning structure comprises a rubber inner pad (22), a positioning protrusion (23) and a positioning slot (42).

6. The circuit board with an anti-interference structure according to claim 5, characterized in that: A rubber inner pad (22) is fixed to the inner wall of the positioning groove (21), a positioning protrusion (23) is arranged on the surface of the rubber inner pad (22), a positioning slot (42) corresponding to the positioning protrusion (23) is opened on the surface of the positioning block (41), and the positioning protrusion (23) is embedded in the positioning slot (42).

7. The circuit board with an anti-interference structure according to claim 6, characterized in that: An elliptical cavity is provided inside the rubber inner pad (22) and its position corresponds to the positioning protrusion (23). The rubber inner pad (22) and the positioning protrusion (23) are an integrated structure.

8. The circuit board with an anti-interference structure according to claim 1, characterized in that: The four corners of the main body (1) are all provided with reserved installation holes, and the reserved installation holes are circular.

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