Fixing device of PCB (Printed Circuit Board)

Abstract

The utility model provides a fixing device of a PCB circuit board, which comprises a shell, a first fixing assembly, a second fixing assembly and a movable assembly, the first fixing assembly and the second fixing assembly have the same structure, the first fixing assembly is arranged on one side of the shell, the second fixing assembly is fixedly connected to one side of the movable assembly, and the movable assembly is arranged on the shell. The side, away from the second fixing assembly, of the movable assembly can movably extend into the shell, an outer side plate is separated from one side of the shell, after the outer side plate is completely pulled out, an upper movable plate and a lower movable plate can slide in a movable groove due to the elastic force of a spring, and then the upper movable plate is connected with the upper end of the shell through an upper movable assembly; the lower movable plate and the shell are connected through the lower movable assembly, the area of the whole device is increased through the pulled-out upper movable plate and the pulled-out lower movable plate, the whole device can adapt to different PCBs, and the practicability of the whole device is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board fixing equipment, in particular to a fixing device for a PCB circuit board. Background Technique

[0002] PCB, namely printed circuit board, is one of the important components of the electronics industry. Almost every electronic device, from small electronic watches and calculators to large computers, communication electronic devices, and military weapon systems, as long as there are electronic components such as integrated circuits, in order to achieve electrical interconnection between each component, printed circuit boards are used. The printed circuit board consists of an insulating base plate, connecting wires, and pads for assembling and soldering electronic components, and has the dual functions of a conductive circuit and an insulating base plate. It can replace complex wiring to achieve electrical connection between components in the circuit, not only simplifying the assembly and soldering work of electronic products, reducing the wiring workload in the traditional way, greatly reducing the labor intensity of workers, but also reducing the overall volume of the machine, lowering the product cost, and improving the quality and reliability of electronic devices. The printed circuit board has good product consistency, can be designed in a standardized manner, which is conducive to the realization of mechanization and automation in the production process. At the same time, the whole printed circuit board after assembly and debugging can be used as an independent spare part, which is convenient for the interchange and maintenance of the whole machine product. At present, printed circuit boards have been extremely widely used in the production and manufacturing of electronic products. In the existing installation methods for PCB circuit boards, one is to fix the PCB circuit board on the PCB fixing bracket by screws. Generally, there are multiple fixing holes for the PCB circuit board on the PCB fixing bracket. After placing the PCB circuit board on the fixing bracket, bolts are passed through the mounting holes on the PCB and installed inside the fixing holes on the PCB fixing bracket. However, since the size of the PCB fixing bracket is fixed, and the sizes of PCB circuit boards include large ones and small ones, different specifications of PCB fixing brackets need to be used when fixing different PCB circuit boards, which reduces the overall practicability to a certain extent.

[0003] Therefore, it is necessary to provide a new fixing device for a PCB circuit board to solve the above technical problems. Content of the Utility Model

[0004] To solve the above technical problems, the present utility model provides a fixing device for a PCB circuit board. The fixing device for a PCB circuit board provided by the present utility model includes a housing, a first fixing component, a second fixing component, and a movable component. The structures of the first fixing component and the second fixing component are the same. The first fixing component is arranged on one side of the housing. The second fixing component is fixedly connected to one side of the movable component. One side of the movable component away from the second fixing component can be movably extended into the interior of the housing. The movable component includes an outer side plate, an upper movable plate, a lower movable plate, an upper engaging component, and a lower engaging component. The outer side plate is arranged on one side of the housing. The outer side plate is detachably connected to one side of the housing by bolts. One side of the outer side plate away from the housing is fixedly connected to the second fixing component. Two activity slots are arranged opposite to each other up and down on one side of the outer side plate close to the housing. The upper movable plate and the lower movable plate are movably connected to the interior of the activity slots. A plurality of connecting springs are fixedly connected between the upper movable plate and the lower movable plate. One side of the upper movable plate and the lower movable plate away from the outer side plate can be movably extended into the interior of the housing. One end of the upper movable plate close to the interior of the housing is fixedly connected to the upper engaging component. One end of the lower movable plate close to the interior of the housing is fixedly connected to the lower engaging component.

[0005] Preferably, the PCB circuit board can be installed above the housing.

[0006] Preferably, two sets of the first fixing component and the second fixing component are provided. The first fixing component includes a connecting plate, a threaded rod, and a clamping plate. The connecting plate is L-shaped. The L-shaped bottom end of the connecting plate is fixedly connected to one side of the housing. One end of the threaded rod movably passes through the clamping plate. One end of the threaded rod close to the clamping plate is movably extended into the interior of the connecting plate.

[0007]

[0008] ​Preferably, four sets of upper engaging components are provided. The upper engaging component includes an upper movable column and an engaging block. Four uniformly arranged L-shaped fixing grooves are formed above the housing. The upper movable column and the engaging block can extend into the fixing grooves movably. One end of the upper movable column away from the housing is movably connected to one end of the upper movable plate away from the outer plate. Preferably, four sets of lower engaging components are provided. The engaging component includes a lower movable column and a limiting member. One end of the lower movable column is fixedly connected to one end of the lower movable plate away from the outer plate. A positioning hole is formed on one side of the lower movable column away from the lower movable plate. A first spring is fixedly connected to the inner bottom wall of the positioning hole. One end of the first spring away from the inner bottom wall of the positioning hole is fixedly connected to one side of the limiting member. Four uniformly arranged positioning grooves and four limiting holes for limiting the limiting member are formed on the bottom side of the housing. One end of the lower movable column away from the lower movable plate can extend into the positioning groove movably.

[0009] Preferably, the limiting member is a fixing block. One end of the fixing block is movably connected to the inside of the positioning hole formed on one side of the lower movable column away from the lower movable plate. One end of the fixing block close to the positioning hole is fixedly connected to one end of the first spring.

[0010] Preferably, the shape of the fixing block is square.

[0011] Preferably, the shape of the fixing block is arc-shaped.

[0012] Compared with the related art, the fixing device for PCB circuit boards provided by the present utility model has the following Beneficial effects

[0013] By separating the outer plate from one side of the housing and pulling out the outer plate completely, the upper movable plate and the lower movable plate are connected by a connecting spring. After the outer plate is pulled out completely, due to the elastic force of the spring, the upper movable plate and the lower movable plate will slide inside the movable groove. Then, the upper movable plate is connected to the upper end of the housing through the upper movable component, and the lower movable plate is connected to the housing through the lower movable component. By pulling out the upper movable plate and the lower movable plate, the area of the whole device is increased, so that the whole device can adapt to different PCB circuit boards, and the practicability of the whole device is increased. Description of the drawings

[0014] FIG. 1 is a schematic structural diagram of a first preferred embodiment of the fixing device for PCB circuit boards provided by the present utility model;

[0015] Structural schematic diagram;

[0016] FIG. 2 is a schematic diagram of the movable component of the first embodiment provided by the present utility model;

[0017] Figure 3 is a schematic diagram of the upper end of the housing of the first embodiment provided by the present utility model;

[0018] Figure 4 is a schematic diagram of the position of the connecting spring of the first embodiment provided by the present utility model;

[0019] Figure 5 is a cross-sectional view of the lower movable column of the first embodiment provided by the present utility model;

[0020] Figure 6 is a schematic diagram of one side of the housing of the first embodiment provided by the present utility model;

[0021] Figure 7 is a schematic diagram of the first fixing component of the first embodiment provided by the present utility model;

[0022] Figure 8 is a schematic diagram of the lower movable column of the first embodiment provided by the present utility model;

[0023] Figure 9 is a schematic diagram of the lower movable column of the second embodiment provided by the present utility model.

[0024] Reference numerals in the figure: 1, housing; 2, PCB circuit board; 3, clamping plate; 4, outer plate; 5, connecting plate;

[0025] 6, upper movable plate; 7, lower movable plate; 8, connecting spring; 9, upper movable column; 10, lower movable column; 11,

[0026] fixed block; 12, first spring; 13, threaded rod; 14, fixed groove; 15, positioning groove; 16, limiting hole;

[0027] 17, engaging block. Detailed implementation manners

[0028] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] Please refer to FIGS. 1-9 in combination. Among them, FIG. 1 is a schematic structural diagram of a preferred first embodiment of the fixing device for the PCB circuit board provided by the present utility model; FIG. 2 is a schematic diagram of the movable component of the first embodiment provided by the present utility model

[0030] ; FIG. 3 is a schematic diagram of the upper end of the housing of the first embodiment provided by the present utility model;

[0031] FIG. 4 is a schematic diagram of the position of the connecting spring of the first embodiment provided by the present utility model; FIG. 5 is a cross-sectional view of the lower movable column of the first embodiment provided by the present utility model; FIG. 6 is a schematic diagram of one side of the housing of the first embodiment provided by the present utility model; FIG. 7 is a schematic diagram of the first fixing component of the first embodiment provided by the present utility model; FIG. 8 is a schematic diagram of the lower movable column of the first embodiment provided by the present utility model; FIG. 9 is a schematic diagram of the lower movable column of the second embodiment provided by the present utility model. Embodiment

[0032] As shown in Figures 1 - 8, a fixing device for a PCB circuit board 2 includes a housing 1, a first fixing component, a second fixing component, and a movable component. The structures of the first fixing component and the second fixing component are the same. The first fixing component is disposed on one side of the housing 1, and the second fixing component is fixedly connected to one side of the movable component. The side of the movable component away from the second fixing component can extend into the interior of the housing 1 in a movable manner. The movable component includes an outer side plate 4, an upper movable plate 6, a lower movable plate 7, an upper engaging component, and a lower engaging component. The outer side plate 4 is disposed on one side of the housing 1. The outer side plate 4 is detachably connected to one side of the housing 1 by bolts. The side of the outer side plate 4 away from the housing 1 is fixedly connected to the second fixing component. Two vertically opposite movable slots are formed on the side of the outer side plate 4 close to the housing 1. The upper movable plate 6 and the lower movable plate 7 are movably connected inside the movable slots. A plurality of connecting springs 8 are fixedly connected between the upper movable plate 6 and the lower movable plate 7. The sides of the upper movable plate 6 and the lower movable plate 7 away from the outer side plate 4 can extend into the interior of the housing 1 in a movable manner. The end of the upper movable plate 6 close to the interior of the housing 1 is fixedly connected to the upper engaging component, and the end of the lower movable plate 7 close to the interior of the housing 1 is fixedly connected to the lower engaging component. The PCB circuit board 2 can be installed above the housing 1. There are two sets of the first fixing component and the second fixing component respectively. The first fixing component includes a connecting plate 5, a threaded rod 13, and a clamping plate 3. The connecting plate 5 is L-shaped. The L-shaped bottom end of the connecting plate 5 is fixedly connected to one side of the housing 1. One end of the threaded rod 13 movably passes through the clamping plate 3, and the end of the threaded rod 13 close to the clamping plate 3 extends into the interior of the connecting plate 5 in a movable manner. There are four sets of upper engaging components. The upper engaging component includes an upper movable column 9 and an engaging block 17. Four uniformly arranged L-shaped fixing slots 14 are formed above the housing 1.

[0033] The upper movable column 9 and the engaging block 17 can extend into the interior of the fixing slot 14 in a movable manner. The end of the upper movable column 9 away from the housing 1 is movably connected to the end of the upper movable plate 6 away from the outer side plate 4. There are four sets of lower engaging components. The engaging component includes a lower movable column 10 and a limiting member. One end of the lower movable column 10 is fixedly connected to the end of the lower movable plate 7 away from the outer side plate 4. A positioning... is formed on the side of the lower movable column 10 away from the lower movable plate 7

[0034] A hole is provided, and a first spring 12 is fixedly connected to the inner bottom wall of the positioning hole. One end of the first spring 12 away from the inner bottom wall of the positioning hole is fixedly connected to one side of the limiting member. Four uniformly arranged positioning grooves 15 and four limiting holes 16 for limiting the limiting member are provided on the bottom side of the housing 1. One end of the lower movable column 10 away from the lower movable plate 7 can be movably extended into the interior of the positioning groove 15. The limiting member is a fixed block 11. One end of the fixed block 11 is movably connected to the interior of a positioning hole provided on one side of the lower movable column 10 away from the lower movable plate 7. One end of the fixed block 11 close to the positioning hole is fixedly connected to one end of the first spring 12. The shape of the fixed block 11 is square. When a PCB circuit board 2 with a larger area needs to be installed, the outer plate 4 is separated from one side of the housing 1. After the outer plate 4 is completely pulled out, the upper movable plate 6 and the lower movable plate 7 are connected by a connecting spring

[0035] 8. Then, after the outer plate 4 is completely pulled out, due to the elastic force of the spring, the upper movable plate 6 and the lower movable plate 7 will slide inside the movable groove. Subsequently, the upper movable column 9 is aligned with the fixing groove 14 provided above the housing 1. By sending the upper movable column 9 into the fixing groove 14, the fixing groove 14 is L-shaped. Rotating the upper movable column 9, the engaging block 17 can be engaged with the L-shaped port of the fixing groove 14. At the same time, the fixed block 11 of the lower movable column 10 is pressed into the positioning hole on the lower movable column 10. Subsequently, the lower movable column 10 is sent into the limiting hole 16, so that the fixed block 11 is engaged with the limiting hole 16 at the bottom of the housing 1, realizing the fixation of the upper movable plate 6 and the lower movable plate 7 to the housing 1. By pulling out the upper movable plate 6 and the lower movable plate 7, the area of the overall device is increased, enabling the overall device to adapt to different PCB circuit boards 2, and increasing the

[0036] practicality of the overall device. Embodiment

[0037] As shown in FIG. 9, following the same structure detailed in Embodiment 1, different from Embodiment 1, the shape of the fixed block 11 is arc-shaped, and the angle of the arc is relatively curved, making the resistance smaller when the lower movable column 10 enters the positioning groove 15 and entering more smoothly.

[0038] The working principle provided by the present utility model is as follows: When a PCB circuit board 2 with a relatively large area needs to be installed, the outer plate 4 is separated from one side of the housing 1. After the outer plate 4 is completely pulled out, the upper movable plate 6 and the lower movable plate 7 are connected by a connecting spring 8. Then, after the outer plate 4 is completely pulled out, due to the elastic force of the spring, the upper movable plate 6 and the lower movable plate 7 will slide inside the movable groove. Subsequently, the upper movable column 9

[0039] is aligned with the fixing groove 14 opened above the housing 1. By sending the upper movable column 9 into the fixing groove 14, the fixing groove 14 is L-shaped. By rotating the upper movable column 9, the engaging block 17 fixedly connected to one side of the upper movable column 9 can be engaged with the L-shaped port of the fixing groove 14. At the same time, the fixing block 11 of the lower movable column 10 is pressed into the positioning hole on the lower movable column 10. Then, the lower movable column 10 is sent into the limiting hole 16, and the fixing block 11 rebounds due to the elastic force of the first spring 12, so that the fixing block 11 is engaged in the limiting hole 16 at the bottom of the housing 1.

[0040] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A fixing device for a PCB circuit board, characterized in that: The invention comprises a housing (1), a first fixing component, a second fixing component and a movable component, wherein the first fixing component and the second fixing component have the same structure, the first fixing component is arranged on one side of the housing (1), the second fixing component is fixedly connected to one side of the movable component, and a side of the movable component away from the second fixing component can be movably extended to the interior of the housing (1); The movable assembly comprises an outer plate (4), an upper movable plate (6), a lower movable plate (7), an upper clamping assembly and a lower clamping assembly. The outer plate (4) is arranged on one side of the shell (1). The outer plate (4) is detachably connected to one side of the shell (1) by bolts. The side of the outer plate (4) away from the shell (1) is fixedly connected to the second fixing assembly. The side of the outer plate (4) close to the shell (1) is provided with two movable grooves arranged opposite to each other in an upper and lower direction. The upper movable plate (6) and the lower movable plate (7) are movably connected to the inside of the movable grooves. A plurality of connecting springs (8) are fixedly connected between the upper movable plate (6) and the lower movable plate (7). The sides of the upper movable plate (6) and the lower movable plate (7) away from the outer plate (4) can be movably extended to the inside of the shell (1). One end of the upper movable plate (6) close to the inside of the shell (1) is fixedly connected to the upper clamping assembly. One end of the lower movable plate (7) close to the inside of the shell (1) is fixedly connected to the lower clamping assembly. Components are fixedly connected.

2. The fixing device for a PCB circuit board according to claim 1, characterized in that: The PCB circuit board (2) can be installed above the housing (1).

3. The fixing device for a PCB circuit board according to claim 2, characterized in that: The first fixing assembly and the second fixing assembly are both provided with two groups, the first fixing assembly comprising a connecting plate (5), a threaded rod (13) and a clamping plate (3), the connecting plate (5) being L-shaped, the L-shaped bottom end of the connecting plate (5) being fixedly connected to one side of the housing (1), one end of the threaded rod (13) being movably arranged through the clamping plate (3), and one end of the threaded rod (13) close to the clamping plate (3) being movably extended to the interior of the connecting plate (5).

4. The fixing device for a PCB circuit board according to claim 3, characterized in that: The upper engaging components are provided in four groups, and the upper engaging components include upper movable columns (9) and engaging blocks (17). Four evenly arranged L-shaped fixing grooves (14) are provided above the shell (1). The upper movable columns (9) and the engaging blocks (17) can be movably extended into the interior of the fixing grooves (14). One end of the upper movable column (9) away from the shell (1) is movably connected to one end of the upper movable plate (6) away from the outer plate (4).

5. The fixing device for a PCB circuit board according to claim 4, characterized in that: The lower engaging assembly is provided with four groups, and the engaging assembly includes a lower movable column (10) and a limiting member. One end of the lower movable column (10) is fixedly connected to one end of the lower movable plate (7) away from the outer plate (4). A positioning hole is provided on the side of the lower movable column (10) away from the lower movable plate (7). A first spring (12) is fixedly connected to the inner bottom wall of the positioning hole. One end of the first spring (12) away from the inner bottom wall of the positioning hole is fixedly connected to one side of the limiting member. Four evenly arranged positioning grooves (15) and four limiting holes (16) for limiting the limiting member are provided on the bottom side of the shell (1). One end of the lower movable column (10) away from the lower movable plate (7) can be movably extended to the inside of the positioning groove (15).

6. The fixing device for a PCB circuit board according to claim 5, characterized in that: The limiting member is a fixed block (11), one end of the fixed block (11) is movably connected to the inside of a positioning hole opened on the side of the lower movable column (10) away from the lower movable plate (7), and one end of the fixed block (11) close to the positioning hole is fixedly connected to one end of the first spring (12).

7. The fixing device for a PCB circuit board according to claim 6, characterized in that: The fixed block (11) is currently in a square shape.

8. The fixing device for a PCB circuit board according to claim 6, characterized in that: The fixing block (11) is in an arc shape.

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