PCB circuit board

Abstract

The utility model relates to the technical field of PCBs, in particular to a PCB which comprises a protective shell and a circuit board body, the protective shell is arranged in a rectangular box with an opening, the bottom in the protective shell is provided with a containing groove used for containing the circuit board body, the middle of the containing groove is concavely arranged, and the circuit board body is arranged in the containing groove. The circuit board comprises a circuit board body and a protective shell, the circuit board body is provided with an object placing groove, the object placing groove is connected with positioning columns, the positioning columns are arranged in the direction perpendicular to the object placing groove, the four positioning columns are arranged on the four fixed edges of the object placing groove respectively, the circuit board body is provided with positioning grooves matched with the positioning columns, and the protective shell is internally provided with a fixing assembly used for clamping the circuit board body and buffering vibration. The PCB fixing structure has the advantages that the problems that the PCB is easily damaged due to uneven stress when the PCB is fixed by screws, and electronic elements are easily damaged due to collision and vibration of the PCB are solved.

Description

Technical Field

[0001] The utility model relates to the field of PCB circuit board technology, in particular to a PCB circuit board. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum base board, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc.

[0003] Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Generally, PCBs are installed on the mounting surface by screws that pass directly through the mounting holes of the PCBs. However, the PCBs are often damaged due to uneven force on the mounting holes. At the same time, when the PCBs are used, a large number of electronic components are installed on the top, which makes them very easy to be damaged in collisions and vibrations. Utility Model Content

[0004] In order to improve the problem that the PCB circuit board is easily damaged due to uneven force when the screws are fixed, and the PCB circuit board is easily damaged by electronic components due to collision and vibration, the present application provides a PCB circuit board.

[0005] The PCB circuit board provided in this application adopts the following technical solution:

[0006] A PCB circuit board comprises a protective shell and a circuit board body, wherein the protective shell is arranged in an open rectangular box, a storage slot for placing the circuit board body is arranged at the bottom of the protective shell, the middle of the storage slot is arranged inwardly concave, a positioning column is connected to the storage slot, the positioning column is arranged in a direction perpendicular to the storage slot, one of the positioning columns is arranged on each of the four fixed sides of the storage slot, a positioning slot adapted for the positioning column is opened on the circuit board body, and a fixing component for clamping the circuit board body and absorbing shock is arranged in the protective shell.

[0007] Preferably, the fixing assembly includes a mounting tube, a sealing cover, a pull rod, a slider, a fixing block and a spring, the mounting tube being connected to the protective shell, the mounting tube being arranged in a direction perpendicular to the protective shell, the mounting tube being provided with four corresponding positioning columns, the sealing cover being connected to the tube mouth of the mounting tube, the pull rod passing through the sealing cover and being arranged in the mounting tube, the axis of the pull rod and the axis of the mounting tube being arranged colinearly, the slider being connected to the end of the pull rod located in the mounting tube, the side wall of the slider slidingly fits the inner wall of the mounting tube, the spring being sleeved on the rod body of the pull rod located in the mounting tube, one end of the spring abuts against the slider, and the other end abuts against the sealing cover, the fixing block being connected to the end of the pull rod that does not penetrate into the mounting tube, the fixing block and the pull rod being arranged perpendicular to each other, the fixing block can be pressed against the circuit board body, and the fixing block is provided with a guide hole for the positioning column to pass through.

[0008] Preferably, the slider is in a disc shape, and the inner cavity of the mounting tube is adapted to fit the slider.

[0009] Preferably, the mounting cylinder is filled with damping oil, and the sliding block is provided with oil holes for the damping oil to pass through, and a plurality of the oil holes are evenly arranged along the circumference of the sliding block.

[0010] Preferably, a first shock-absorbing pad is attached to the fixing block, and the first shock-absorbing pad is located on the surface of the fixing block facing the circuit board body.

[0011] Preferably, a second shock-absorbing pad is attached to the storage slot, and the second shock-absorbing pad is located on the surface of the storage slot facing the circuit board body.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] The utility model provides a PCB circuit board, comprising a protective shell, a circuit board body, a storage slot, a positioning column and a fixing component. During installation, the circuit board body is placed on the storage slot, and the positioning column is used to limit the circuit board body, which is beneficial to improving the installation efficiency on the one hand, and preventing the circuit board body from sliding on the storage slot on the other hand. The center of the storage slot is concavely arranged to prevent the storage slot from contacting the circuit board body with solder in the opposite direction, which affects the subsequent fixing effect. Then, the fixing component is used to clamp and fix the circuit board body on the storage slot. At the same time, the fixing component can also play a shock-absorbing role on the circuit board body, thereby achieving the effect of improving the problem that the PCB circuit board is easily damaged due to uneven force when the screw is fixed, and the problem that the PCB circuit board is easily damaged due to collision and vibration of the PCB circuit board is easy to damage electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a PCB circuit board in an embodiment of the present application;

[0015] Figure 2 It is a schematic diagram used to reflect the fixing component in the embodiment of the present application.

[0016] Explanation of the reference numerals: 1. Protective shell; 2. Circuit board body; 21. Positioning slot; 3. Storage slot; 31. Positioning column; 32. Second shock-absorbing pad; 4. Fixing assembly; 41. Mounting cylinder; 42. Sealing cover; 43. Pull rod; 44. Slider; 441. Oil hole; 45. Fixing block; 451. First shock-absorbing pad; 46. Spring. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the scheme of the utility model, the scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiment is only an embodiment of a part of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two original components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The present application embodiment discloses a PCB circuit board. Figure 1 and Figure 2The PCB circuit board includes a protective shell 1 and a circuit board body 2. The protective shell 1 is arranged in an open rectangular box. A storage slot 3 for placing the circuit board body 2 is provided at the bottom of the protective shell 1. The middle of the storage slot 3 is concave. A positioning column 31 is connected to the storage slot 3. The positioning column 31 is arranged in a direction perpendicular to the storage slot 3. The positioning column 31 is respectively provided on the four fixed sides of the storage slot 3. A positioning slot 21 adapted to the positioning column 31 is opened on the circuit board body 2. A fixing component 4 for clamping the circuit board body 2 and absorbing shock is provided in the protective shell 1.

[0020] During installation, the circuit board body 2 is placed on the storage slot 3, and the positioning column 31 is used to limit the circuit board body 2. On the one hand, it is beneficial to improve the installation efficiency, and on the other hand, it prevents the circuit board body 2 from sliding on the storage slot 3. The center of the storage slot 3 is concave to prevent the storage slot 3 and the circuit board body 2 from reverse solder contact, which affects the subsequent fixing effect. Then, the circuit board body 2 can be clamped and fixed on the storage slot 3 using the fixing component 4. At the same time, the fixing component 4 can also play a shock-absorbing role for the circuit board body 2.

[0021] The fixing assembly 4 includes a mounting tube 41, a sealing cover 42, a pull rod 43, a slider 44, a fixing block 45 and a spring 46. The mounting tube 41 is connected to the protective shell 1. The mounting tube 41 is arranged in a direction perpendicular to the protective shell 1. The mounting tube 41 is provided with four corresponding positioning columns 31. The sealing cover 42 is connected to the tube mouth of the mounting tube 41. The pull rod 43 passes through the sealing cover 42 and is arranged in the mounting tube 41. The axis of the pull rod 43 is arranged in a colinear manner with the axis of the mounting tube 41. The slider 44 is connected to the end of the pull rod 43 located in the mounting tube 41. The side wall of the slider 44 slides and fits the mounting tube 41. 1, a spring 46 is sleeved on the rod body of the pull rod 43 located in the installation tube 41, one end of the spring 46 abuts against the slider 44, and the other end abuts against the sealing cover 42, a fixing block 45 is connected to the end of the pull rod 43 that does not penetrate into the installation tube 41, the fixing block 45 and the pull rod 43 are arranged perpendicular to each other, the fixing block 45 can be pressed against the circuit board body 2, a guide hole for the positioning column 31 to pass through is opened on the fixing block 45, and the fixing block 45 is passed on the positioning column 31, so that the fixing block 45 will not move left and right due to vibration during the clamping process, thereby improving the stability of clamping the circuit board body 2.

[0022] The slider 44 is in a disc shape, and the inner cavity of the mounting tube 41 is adapted to fit the slider 44 , so as to facilitate the rotation of the fixing block 45 when fixing the circuit board.

[0023] When fixing the circuit board body 2, first pull the fixing block 45 upward and rotate the fixing block 45 to make the fixing block 45 away from the storage slot 3 to prevent the fixing block 45 from affecting the installation of the circuit board body 2. Then place the circuit board body 2 on the storage slot 3, then pull the fixing block 45 and rotate it to reset the fixing block 45, and then release the fixing block 45 after passing the fixing block 45 through the positioning column 31, and use the spring 46 to push the slider 44 through the pull rod 43 to drive the fixing block 45 to squeeze and contact the top of the circuit board body 2.

[0024] The mounting tube 41 is filled with damping oil, and the slider 44 is provided with oil holes 441 for the damping oil to pass through. A number of oil holes 441 are evenly arranged along the circumference of the slider 44. By arranging the damping oil in the mounting tube 41, when the slider 44 moves, the damping oil flows from one side of the slider 44 to the other side through the oil holes 441 on the slider 44. The resistance generated in this process acts on the elastic force of the spring 46, which can make the spring 46 quickly restore stability, which is beneficial to improving the shock absorbing effect.

[0025] A first shock-absorbing pad 451 is attached to the fixing block 45, and the first shock-absorbing pad 451 is located on the surface of the fixing block 45 facing the circuit board body 2. A second shock-absorbing pad 32 is attached to the storage slot 3, and the second shock-absorbing pad 32 is located on the surface of the storage slot 3 facing the circuit board body 2. By arranging the first shock-absorbing pad 451 and the second shock-absorbing pad 32, on the one hand, direct contact between the circuit board body 2 and the fixing block 45 and the storage slot 3 is avoided, which can protect the circuit board body 2, and on the other hand, it can further play a shock-absorbing role.

[0026] The implementation principle of a PCB circuit board in the embodiment of the present application is as follows: during installation, first pull the fixing block 45 upward and rotate the fixing block 45 to make the fixing block 45 away from the storage slot 3 to prevent the fixing block 45 from affecting the installation of the circuit board body 2, then place the circuit board body 2 on the storage slot 3 and clamp it between the positioning columns 31, then pull the fixing block 45 and rotate it to reset the fixing block 45, and release the fixing block 45 after the fixing block 45 passes through the positioning columns 31, and use the spring 46 to push the slider 44 to drive the fixing block 45 to squeeze and contact the top of the circuit board body 2 through the pull rod 43. When the circuit board body 2 is vibrated by external force, the first shock-absorbing pad 451 and the second shock-absorbing pad 32 are first used to play a preliminary shock-absorbing role on the vibration, and then the vibration on the circuit board body 2 acts on the fixing block 45, so that the fixing block 45 drives the slider 44 to shake up and down, thereby compressing the spring 46, generating elastic force for shock absorption, and the resistance generated by the damping oil during the up and down movement of the slider 44 further plays a shock-absorbing role.

[0027] Finally, it should be noted that the above is only the preferred implementation of the utility model, and the protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A PCB circuit board, characterized in that: The invention comprises a protective shell (1) and a circuit board body (2), wherein the protective shell (1) is arranged in an open rectangular box, a storage groove (3) for placing the circuit board body (2) is arranged at the bottom of the protective shell (1), the middle of the storage groove (3) is arranged inwardly concave, a positioning column (31) is connected to the storage groove (3), the positioning column (31) is arranged in a direction perpendicular to the storage groove (3), and one of the positioning columns (31) is respectively arranged on four fixed sides of the storage groove (3), a positioning groove (21) adapted to the positioning column (31) is opened on the circuit board body (2), and a fixing component (4) for clamping the circuit board body (2) and absorbing vibration is arranged in the protective shell (1).

2. A PCB circuit board according to claim 1, characterized in that: The fixing assembly (4) comprises a mounting tube (41), a sealing cover (42), a pull rod (43), a slider (44), a fixing block (45) and a spring (46); the mounting tube (41) is connected to the protective shell (1); the mounting tube (41) is arranged in a direction perpendicular to the protective shell (1); the mounting tube (41) is provided with four corresponding positioning columns (31); the sealing cover (42) is connected to the tube mouth of the mounting tube (41); the pull rod (43) passes through the sealing cover (42) and is arranged in the mounting tube (41); the axis of the pull rod (43) is arranged colinearly with the axis of the mounting tube (41); the slider (44) is connected to the pull rod (43) and the fixing block (45) is connected to the fixing block (46); The rod (43) is located at the end portion inside the mounting tube (41), the side wall of the slider (44) slides in contact with the inner wall of the mounting tube (41), the spring (46) is sleeved on the rod body of the pull rod (43) located inside the mounting tube (41), one end of the spring (46) abuts against the slider (44), and the other end abuts against the sealing cover (42), the fixing block (45) is connected to the end portion of the pull rod (43) that does not penetrate into the mounting tube (41), the fixing block (45) and the pull rod (43) are arranged perpendicular to each other, the fixing block (45) can be pressed against the circuit board body (2), and a guide hole for the positioning column (31) to pass through is opened on the fixing block (45).

3. A PCB circuit board according to claim 2, characterized in that: The sliding block (44) is arranged in a disc shape, and the inner cavity of the mounting cylinder (41) is adapted to fit the sliding block (44).

4. A PCB circuit board according to claim 2, characterized in that: The mounting cylinder (41) is filled with damping oil, and the slider (44) is provided with oil holes (441) for the damping oil to pass through. A plurality of the oil holes (441) are evenly arranged along the circumference of the slider (44).

5. A PCB circuit board according to claim 2, characterized in that: A first shock-absorbing pad (451) is attached to the fixing block (45), and the first shock-absorbing pad (451) is located on the surface of the fixing block (45) facing the circuit board body (2).

6. A PCB circuit board according to claim 1, characterized in that: A second shock-absorbing pad (32) is attached to the storage groove (3), and the second shock-absorbing pad (32) is located on the surface of the storage groove (3) facing the circuit board body (2).

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