PCB fixing structure

Abstract

The utility model discloses a PCB (printed circuit board) fixing structure which comprises a bottom plate, a guide mechanism is arranged on the front side of the bottom plate, the guide mechanism is used for guiding the movement of a PCB from front to back, elastic pressing mechanisms are symmetrically and fixedly arranged on the left side and the right side of the bottom plate, and the elastic pressing mechanisms are used for pressing the PCB from front to back. Supporting blocks are arranged at the positions, located at the bottoms of the inner sides of the elastic pressing mechanisms, of the bottom plate, the PCB is elastically pressed on the supporting blocks through the elastic pressing mechanisms, and a limiting plate higher than the supporting blocks is fixedly arranged at the position, located between the rear ends of the two elastic pressing mechanisms, of the bottom plate. The device has the advantages of being simple in structure, convenient to operate, easy to mount and dismount, high in product stability and reliability and convenient to use by people.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB boards, in particular to a PCB board fixing structure. Background Art

[0002] PCB (Printed Circuit Board), also known as printed circuit board, is a basic component used to support and connect electronic components. It plays a key role in electronic devices such as computers, mobile phones, and televisions. With the rapid development of science and technology, the application of PCB boards in various industries has continued to expand. In order to better cope with various application scenarios, higher requirements are placed on the fixing method of PCB boards. The fixing method needs to ensure the firmness of the PCB board to prevent loosening or damage during use. At the same time, the characteristics of easy installation and disassembly have also become crucial to repair and update electronic equipment.

[0003] At present, PCB boards are generally fixed by screws, or by bonding and fixing the PCB boards with EVA (Ethylene VinylAcetate) double-sided adhesive tape. However, the existing screw fixing method is relatively complicated and the process is cumbersome, and the EVA double-sided adhesive tape has strong adhesion, which makes disassembly difficult and easily causes damage to the PCB board during maintenance or rework. Therefore, the existing PCB board fixing method is inconvenient to operate, installation and disassembly are not flexible enough, and the product stability and reliability are not high, which is not convenient for people to use. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a PCB board fixing structure with simple structure and convenient operation, which is easy to install and disassemble, has high product stability and reliability, and is convenient for people to use.

[0005] A PCB board fixing structure comprises a bottom plate, wherein a guide mechanism is arranged on the front side of the bottom plate, the guide mechanism is used to guide the movement of the PCB board from front to back, elastic clamping mechanisms are symmetrically fixedly arranged on the left and right sides of the bottom plate, a support block is arranged on the bottom of the bottom plate at the inner side of the elastic clamping mechanism, the elastic clamping mechanism elastically presses the PCB board on the support block, and a limit plate with a height higher than the support block is fixedly arranged on the bottom plate between the rear ends of the two elastic clamping mechanisms.

[0006] The elastic clamping mechanism includes a fixing seat and a clamping spring sheet fixedly arranged on the bottom plate, the clamping spring sheet includes a fixing portion, a connecting portion and an arc-shaped clamping portion, the fixing portion is horizontally fixedly arranged on the top of the fixing seat, the connecting portion is integrally extended inwardly and arranged at the two inner ends of the fixing portion, the arc-shaped clamping portion is integrally arranged at the two ends of the connecting portion and is concave downward, and the arc-shaped clamping portion elastically clamps the PCB board on the supporting block. The downward concave design of the arc-shaped clamping portion makes the clamping effect more stable, helps to prevent the PCB board from moving or loosening at the connection part, improves the reliability and stability of the connection, and at the same time can improve the maintainability of the connection part, facilitate the replacement or repair of the PCB board, and can better adapt to PCB boards of different specifications.

[0007] The fixing part is fixedly connected to the top of the fixing seat by fixing screws. By fixing the fixing part to the top of the fixing seat by fixing screws, the PCB board can be accurately positioned, and unnecessary displacement of the PCB board in the device can be effectively prevented, thereby simplifying the assembly process of the PCB board, reducing assembly errors caused by inaccurate positioning, and improving production efficiency.

[0008] The guide mechanism is a guide block, and the inner side of the guide block is provided with a guide groove in the front-to-back direction, the height of which corresponds to the top of the support block, and the front end of the support block is provided with a guide slope whose height increases from front to back. The PCB board passes through the guide groove and the guide slope and moves to the limit plate to prevent the position from shifting. The guide groove is used to further fix the PCB board. The design of the guide slope provides a guiding function, making it easier to accurately position the PCB board during assembly, and also avoiding the risk of damage to the PCB board caused by hard contact, which is more flexible.

[0009] The upper parts of both ends of the limit plate are protruding forward and are provided with baffles, and the baffles are used to block the rear end of the PCB from moving upward. The baffles help to ensure the stability of the PCB when fixed, and can prevent the PCB from loosening or falling off due to external forces, thereby improving the reliability of the connection. During installation, the baffles can serve as a guide to help correctly position the PCB, making installation easier and faster.

[0010] Furthermore, it also includes a grounding part, the clamping spring is a conductive metal sheet, the rear end of the fixing part is integrally bent downward to form a connecting section, the bottom of the connecting section is bent backward and fixedly connected to the front end of the grounding part and the bottom plate through a mounting nut, and the rear end of the grounding part is bent upward to form a grounding mounting sheet for fixed connection with an external metal shell. The grounding part can effectively reduce noise, prevent external signal interference, and ensure the stability and safety of the PCB board during signal transmission and processing.

[0011] A guide bar is arranged upward on the rear edge of the bottom plate, a groove is provided on the guide bar, and the bottom of the grounding part extends into the groove and is electrically connected to the bottom of the groove.

[0012] Furthermore, the material of the compression spring is manganese steel. Manganese steel has a certain elasticity after processing. The contact point between the PCB board and the compression spring is metal and not insulated. The compression spring is grounded by designing the structure of the grounding part to prevent interference.

[0013] Compared with the prior art, the utility model has the advantages that the movement of the PCB board from front to back is guided by the guide mechanism, the PCB board is moved to the limit plate, and the elastic clamping mechanism is used to fix the PCB board on the support block, so as to achieve the purpose of fixed limit, the fixing effect is greatly enhanced, and the assembly and disassembly sequence is more flexible; at the same time, when the staff is soldering, the PCB board will not move, which avoids the situation that the soldering position of the tin point is skewed due to the movement of the PCB board when the staff is performing the soldering work, reduces the risk of PCB board movement, ensures the quality of the PCB board, has high product stability and reliability, and is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model inserted into the PCB board;

[0015] Figure 2 This is a structural schematic diagram of another angle of the utility model inserted into the PCB board;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model without inserting the PCB board;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model from another angle when the PCB board is not inserted;

[0018] Figure 5 This is a schematic diagram of the structure of the compression spring and the grounding part of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the compression spring piece of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Embodiment 1: A PCB board fixing structure includes a base plate 1, a guide mechanism is arranged on the front side of the base plate 1, the guide mechanism is a guide block 2, and a guide groove 21 is opened on the inner side of the guide block 2 along the front-to-back direction, and the height position corresponds to the top of the support block 4. The guide mechanism is used to guide the movement of the PCB board 6 from front to back.

[0022] Elastic clamping mechanisms 3 are symmetrically fixed on the left and right sides of the base plate 1, a support block 4 is arranged on the inner bottom of the elastic clamping mechanism 3 on the base plate 1, the elastic clamping mechanism 3 elastically presses the PCB board 6 on the support block 4, and a limit plate 5 with a height higher than the support block 4 is fixedly arranged between the rear ends of the two elastic clamping mechanisms 3 on the base plate 1.

[0023] The elastic clamping mechanism 3 includes a fixing seat 31 fixedly arranged on the base plate 1 and a clamping spring 32, and the clamping spring 32 includes a fixing portion 321, a connecting portion 322 and an arc-shaped clamping portion 323; the fixing portion 321 is horizontally fixedly arranged on the top of the fixing seat 31, and is fixedly connected to the top of the fixing seat 31 by a fixing screw, the connecting portion 322 extends inwardly and is integrally arranged at the two inner ends of the fixing portion 321, the arc-shaped clamping portion 323 is integrally arranged at the two ends of the connecting portion 322 and is recessed downward, and the arc-shaped clamping portion 323 elastically presses the PCB board 6 onto the supporting block 4.

[0024] The front end of the support block 4 is provided with a guide slope 41 whose height increases from front to back. The PCB board 6 passes through the guide groove 21 and the guide slope 41 and moves to the limit plate 5 to prevent the position from shifting. The guide groove 21 is used to further fix the PCB board 6.

[0025] Furthermore, a PCB board fixing structure also includes a grounding portion 33, the clamping spring 32 is a conductive metal sheet, the rear end of the fixing portion 321 is integrally bent downward to form a connecting section 324, the bottom of the connecting section 324 is bent backward and fixedly connected to the front end and the bottom plate of the grounding portion 33 through a mounting nut, and the rear end of the grounding portion 33 is bent upward to form a grounding mounting sheet 331 for fixedly connecting to an external metal shell.

[0026] A guide bar 11 is disposed upwardly at the rear edge of the bottom plate 1 . A groove 111 is formed on the guide bar 11 . The bottom of the grounding portion 33 extends into the groove 111 and is electrically connected to the bottom of the groove 111 .

[0027] Specifically, the material of the pressing spring piece 32 is manganese steel.

[0028] Embodiment 2: The rest is the same as Embodiment 1, except that the upper parts of both ends of the limiting plate 5 are protruding forward and provided with blocking pieces 51, which are used to block the rear end of the PCB board from moving upward.

[0029] The invention discloses an installation process of a PCB board fixing structure. During installation, the PCB board is first easily inserted into a limit plate through a guide block, placed on a support plate, and then a clamping spring is fixed on a fixing seat. The installation process is stable and reliable. The design of the guide block provides a guiding function and avoids the risk of damage to the PCB board caused by a hard impact. At the same time, the structural design of the grounding part avoids interference with the PCB board during operation and reduces noise.

Claims

1. A PCB board fixing structure, comprising a bottom plate, characterized in that A guide mechanism is provided on the front side of the base plate, and the guide mechanism is used to guide the movement of the PCB board from front to back. Elastic clamping mechanisms are symmetrically fixedly provided on the left and right sides of the base plate, and a support block is provided on the base plate at the inner bottom of the elastic clamping mechanism. The elastic clamping mechanism elastically presses the PCB board onto the support block, and a limit plate with a height higher than the support block is fixedly provided on the base plate between the rear ends of the two elastic clamping mechanisms.

2. A PCB board fixing structure according to claim 1, characterized in that The elastic clamping mechanism includes a fixing seat and a clamping spring fixedly arranged on the bottom plate, the clamping spring includes a fixing portion, a connecting portion and an arc-shaped clamping portion, the fixing portion is horizontally fixedly arranged on the top of the fixing seat, the connecting portion is integrally extended inwardly and arranged at the two inner ends of the fixing portion, the arc-shaped clamping portion is integrally arranged at the two ends of the connecting portion and is recessed downward, and the arc-shaped clamping portion elastically presses the PCB board onto the supporting block.

3. A PCB board fixing structure according to claim 2, characterized in that The fixing part is fixedly connected to the top of the fixing seat by means of fixing screws.

4. The PCB board fixing structure according to any one of claims 1 to 3, characterized in that The guide mechanism is a guide block, the inner side of which is provided with a guide groove along the front-to-back direction, the height position of which corresponds to the top of the support block, and the front end of the support block is provided with a guide slope whose height increases from front to back.

5. A PCB board fixing structure according to claim 1, characterized in that The upper parts of the two ends of the limiting plate are protruding forward and are provided with blocking pieces, and the blocking pieces are used to block the rear end of the PCB board from moving upward.

6. A PCB board fixing structure according to claim 2, characterized in that It also includes a grounding part, the clamping spring is a conductive metal sheet, the rear end of the fixing part is bent downward as a whole to form a connecting section, the bottom of the connecting section is bent backward and fixedly connected to the front end of the grounding part and the bottom plate through a mounting nut, and the rear end of the grounding part is bent upward to form a grounding mounting plate for fixedly connecting to an external metal shell.

7. A PCB board fixing structure according to claim 6, characterized in that A guide bar is arranged upward on the rear edge of the bottom plate, a groove is provided on the guide bar, and the bottom of the grounding part extends into the groove and is electrically connected to the bottom of the groove.

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