Fixing device for circuit board of fire-fighting product

Abstract

The utility model relates to the technical field of installation, and provides a fire-fighting product circuit board fixing device which comprises a shell, the inner wall of the shell is fixedly connected with a first clamping block, the side, away from the first clamping block, of the shell is movably sleeved with a threaded rod, and the side, close to the threaded rod, of the shell is movably sleeved with two sliding rods. One side, close to the interior of the shell, of each sliding rod is fixedly connected with a second clamping block, the multiple fixing rods are further included, the outer surfaces of the multiple fixing rods are movably sleeved with clamps, and the outer surfaces of the multiple clamps are fixedly connected with two positioning rods, so that after all chucks are attached to a circuit board, the clamping blocks are fixed to the clamping blocks, and the clamping blocks are fixed to the clamping blocks. According to the circuit board clamping device, the circuit board can be clamped only by rotating the positioning plates, the circuit board clamping device can adapt to different shapes of the circuit board, the problem that clamping force is unstable due to the fact that springs are used is solved, meanwhile, the multiple positioning plates can be fixed in the box body, bolts are prevented from being used, corresponding installation tools are prevented from being selected, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation, in particular to a fixing device for a circuit board of a fire protection product. Background Art

[0002] Fire protection product circuit boards are circuit boards used to control and manage fire protection equipment. They are usually used in fire alarm systems, automatic sprinkler systems, smoke detectors, fire control panels and other fire protection facilities. As the core component of electronic equipment, circuit boards carry signal transmission, data processing and control functions.

[0003] In the prior art, such as the Chinese patent number: CN216414874U, "A fixing device for a circuit board of a fire protection product", includes a mounting base, and the top of the mounting base is respectively provided with a buffer spring, a telescopic rod and a heat dissipation fan, the top of the buffer spring and the telescopic rod are connected to a heat sink, the top of the heat sink is provided with thermal conductive silicone, and the top of the thermal conductive silicone is provided with a circuit board body. The utility model is provided with a torsion spring, a clamp, a slot, a reset spring and a connecting block. When it is necessary to disassemble the circuit board body and the fixing device, the staff applies pressure on the top of the clamp, thereby deforming the torsion spring. With the connecting shaft as a fulcrum, the other end of the clamp is disengaged from the slot, and then the reset spring pushes the connecting block to move, thereby causing the limit plate to retract into the mounting cavity. The circuit board can be taken out from the mounting base without the limit of the limit plate, which is simple to operate and convenient to disassemble.

[0004] Although the above scheme has the above advantages, the disadvantage of the above scheme is that because a spring is used in the clamping, the spring's resilience may be affected by external factors and change, resulting in instability of the clamping force, which may have a negative impact on the accuracy and reliability of the clamping mechanism. When fixing the fixed circuit board in the box, bolts are still required. Installation with bolts usually requires more time and effort. The bolts need to be installed one by one and tightened with a wrench or other tools, which may cause the installation process to be relatively slow and reduce the installation efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that, because a spring is used in clamping, the resilience of the spring may be affected by external factors and change, resulting in instability of the clamping force, which may have a negative impact on the accuracy and reliability of the clamping mechanism. When fixing the fixed circuit board in the box, bolts are still required. Installation using bolts usually requires more time and effort. The bolts need to be installed one by one and tightened with a wrench or other tools, which may cause the installation process to be relatively slow and reduce the installation efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing device for a circuit board of a fire protection product, comprising: a shell, the inner wall of the shell is fixedly connected to a clamping block 1, a side of the shell away from the clamping block 1 is movably sleeved with a threaded rod, a side of the shell close to the threaded rod is movably sleeved with two sliding rods, and the two sliding rods are fixedly connected to a clamping block 2 on the side close to the inside of the shell, and also includes: multiple fixing rods, the outer surfaces of the multiple fixing rods are movably sleeved with clamps, the outer surfaces of the multiple clamps are fixedly connected to two positioning rods, the outer surfaces of the multiple positioning rods are movably sleeved with chucks, the inner surface of the shell close to the clamping block 1 is fixedly connected to a partition, and the multiple chucks are movably embedded in the outer surfaces of the multiple clamps, thereby avoiding the problem of unstable clamping force caused by the use of springs.

[0007] As a preferred embodiment, the inner wall of the shell is provided with a plurality of slide grooves, the inner surfaces of the plurality of slide grooves are movably embedded with slide rods, the slide rods are fixedly connected with a rotating disk on one side away from the plurality of slide grooves, the outer surface of the rotating disk is provided with a plurality of positioning grooves 1, the inner surfaces of the plurality of positioning grooves 1 are movably embedded with slide blocks 1, thereby avoiding the use of bolts and the need to select corresponding installation tools, thereby improving installation efficiency.

[0008] As a preferred embodiment, multiple fixing rods are fixedly connected to the outer surfaces of the clamping block one and the clamping block two, multiple clamps are movably embedded in the outer surfaces of the clamping block one and the clamping block two, the two sliding rods are fixedly connected to the limiting blocks on one side away from the clamping block two, and the outer surfaces of multiple chucks are fixedly connected with gaskets, and the fixing rods can limit the movement trajectory of the clamps.

[0009] As a preferred embodiment, the bottom outer surfaces of the plurality of sliders are fixedly connected with connecting rods 1, and the bottom outer surfaces of the plurality of connecting rods 1 are fixedly connected with working rods, and connecting rods 1 can fix the positioning plate to the external box through the working rods.

[0010] As a preferred embodiment, an operating rod is fixedly connected to the outer surface of the rotating disk, an operating groove is opened on the side of the shell close to the operating rod, and the operating rod is movably embedded in the inner surface of the operating groove, and the operating groove can limit the movement trajectory of the operating rod.

[0011] As a preferred embodiment, the bottom outer surfaces of the plurality of working rods are fixedly connected with connecting rod 2, and the bottom outer surfaces of the plurality of connecting rods 2 are fixedly connected with sliding block 2. Connecting rod 2 can transfer the kinetic energy of the working rod to sliding block 2.

[0012] As a preferred embodiment, the outer surfaces of the plurality of working rods are fixedly connected with positioning plates, a positioning column is movably embedded at the bottom center of the rotating disk, and the positioning column is fixedly connected to the bottom inner surface of the shell, and the positioning column can repeatedly limit the rotation of the rotating disk.

[0013] As a preferred embodiment, a plurality of positioning grooves 2 are provided on the inner surface of the bottom of the shell, and a plurality of sliders 2 are movably embedded in the inner surfaces of the plurality of positioning grooves 2, and the positioning grooves 2 can limit the movement trajectory of the sliders 2.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. The utility model places the circuit board in the middle position of multiple clamps, and then manually rotates the threaded rod, the threaded rod retracts toward the inside of the shell, and pushes the clamping block 2, so that the clamping block 2 drives the two sliding rods to slide, and the clamping block 2 drives two of the clamps forward, and the two clamps drive multiple clamps forward. When the multiple clamps contact the circuit board, they will push the circuit board to approach the other two clamps on the clamping block 1. When the circuit board hits the multiple clamps on the other two clamps, because the outline of the circuit board is an irregular shape, after the circuit board hits the clamps on the other two clamps, a clamp on one of the clamps is rotated around the corresponding positioning rod. When this clamp is completely fitted with the circuit board, the clamp corresponding to this clamp will make an arc motion with the fixed rod as the center, so that the other clamp on this clamp is close to the circuit board, and finally this clamp is completely fitted with the circuit board. In this way, when all the clamps are fitted with the circuit board, the circuit board can be clamped, and it can adapt to different shapes of the circuit board, avoiding the problem of unstable clamping force caused by the use of springs.

[0016] 2. According to the utility model, after the circuit board is fixed on the shell, the operating rod is rotated to make the operating rod move on the inner surface of the operating groove, and the operating rod drives the rotating disk to make a circular motion with the positioning column as the center, so that the multiple positioning grooves 1 on the rotating disk rotate, and the multiple positioning grooves 1 have sliders 1 inside, so the multiple sliders 1 will also move with the rotation of the rotating disk. Because of the movement of the multiple sliders 1, the multiple connecting rods 1 drive the multiple working rods to perform telescopic motion. The movement of the multiple working rods causes the multiple sliders 2 to move on the inner surface of the multiple positioning grooves 2 through the multiple connecting rods 2, and the telescopic motion of the multiple working rods causes the multiple positioning plates to extend out of the shell, and the sliding rod can move on the inner surface of the sliding groove, thereby providing a good working environment for the rotating disk and improving the service life of the rotating disk. In this way, the multiple positioning plates can be fixed in the box, avoiding the use of bolts and the need to select corresponding installation tools, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic diagram of the main structure of a fixing device for a circuit board of a fire protection product provided by the utility model;

[0018] Figure 2 A schematic diagram of the position structure of a rotating disk of a fixing device for a circuit board of a fire protection product provided by the utility model;

[0019] Figure 3 A schematic diagram of the second position structure of the positioning groove of a fixing device for a circuit board of a fire protection product provided by the utility model;

[0020] Figure 4 A fixing device for a circuit board of a fire protection product provided by the utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Legend:

[0022] 1. Shell; 2. Clamping block 1; 3. Threaded rod; 4. Clamping block 2; 5. Fixed rod; 6. Clamp; 7. Positioning rod; 8. Chuck; 9. Partition; 10. Slide; 11. Slide rod; 12. Rotating disk; 13. Positioning slot 1; 14. Sliding block 1; 15. Connecting rod 1; 16. Working rod; 17. Connecting rod 2; 18. Sliding block 2; 19. Positioning slot 2; 20. Operating rod; 21. Operating slot; 22. Positioning plate; 23. Positioning column; 24. Sliding rod; 25. Limit block; 26. Gasket. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4The utility model provides a technical solution: a fixing device for a circuit board of a fire protection product, comprising: a shell 1, a clamping block 2 is fixedly connected to the inner wall of the shell 1, a threaded rod 3 is movably sleeved on the side of the shell 1 away from the clamping block 2, and two sliding rods 24 are movably sleeved on the side of the shell 1 close to the threaded rod 3, and the two sliding rods 24 are fixedly connected to the clamping block 4 on the side close to the inside of the shell 1, and also comprising: a plurality of fixing rods 5, the outer surfaces of the plurality of fixing rods 5 are movably sleeved with clamps 6, the outer surfaces of the plurality of clamps 6 are fixedly connected with two positioning rods 7, the outer surfaces of the plurality of positioning rods 7 are movably sleeved with clamps 8, the inner surface of the shell 1 is fixedly connected with a partition plate 9 on the side close to the clamping block 2, and the plurality of clamps 8 are movably embedded in the outer surfaces of the plurality of clamps 6. In this way, when all the clamps 8 are in contact with the circuit board, the circuit board can be clamped, and can adapt to different shapes of the circuit board, avoiding the problem of unstable clamping force caused by the use of springs.

[0025] like Figure 1-4 As shown, the inner wall of the shell 1 is provided with a plurality of slide grooves 10, and the inner surfaces of the plurality of slide grooves 10 are movably embedded with slide rods 11, and the plurality of slide rods 11 are fixedly connected with a rotating disk 12 on one side away from the plurality of slide grooves 10, and the outer surface of the rotating disk 12 is provided with a plurality of positioning grooves 13, and the inner surfaces of the plurality of positioning grooves 13 are movably embedded with slide blocks 14, so that the plurality of positioning plates 22 can be fixed in the box body, avoiding the use of bolts, the need to select corresponding installation tools, and improving the installation efficiency.

[0026] like Figure 1-4 As shown, a plurality of fixing rods 5 are fixedly connected to the outer surfaces of the clamping block 1 2 and the clamping block 2 4, a plurality of clamps 6 are movably embedded in the outer surfaces of the clamping block 1 2 and the clamping block 2 4, two sliding rods 24 are fixedly connected to the limiting blocks 25 on one side away from the clamping block 2 4, and a plurality of chucks 8 are fixedly connected to the outer surfaces with gaskets 26, and the fixing rod 5 can limit the movement trajectory of the clamp 6, so that the clamp 6 always makes a circular motion with the fixing rod 5 as the center.

[0027] like Figure 1-4 As shown, the bottom outer surfaces of multiple sliders 14 are fixedly connected with connecting rods 15, and the bottom outer surfaces of multiple connecting rods 15 are fixedly connected with working rods 16. The connecting rods 15 can fix the positioning plate 22 to the external box through the working rods 16, thereby improving the conditions for fixing the shell 1 inside the external box.

[0028] like Figure 1-4 As shown, an operating rod 20 is fixedly connected to the outer surface of the rotating disk 12, and an operating groove 21 is opened on the side of the shell 1 close to the operating rod 20. The operating rod 20 is movably embedded in the inner surface of the operating groove 21. The operating groove 21 can limit the movement trajectory of the operating rod 20, thereby preventing the operating rod 20 from derailing and affecting the use of the equipment.

[0029] like Figure 1-4 As shown, the bottom outer surfaces of the multiple working rods 16 are fixedly connected with connecting rod 2 17, and the bottom outer surfaces of the multiple connecting rods 17 are fixedly connected with slider 2 18. Connecting rod 2 17 can transfer the kinetic energy of the working rods 16 to slider 2 18, so that slider 2 18 moves on the inner surface of positioning groove 2 19.

[0030] like Figure 1-4 As shown, the outer surfaces of the multiple working rods 16 are fixedly connected with positioning plates 22, and a positioning column 23 is movably embedded at the bottom center of the rotating disk 12. The positioning column 23 is fixedly connected to the bottom inner surface of the shell 1. The positioning column 23 can repeatedly limit the rotation of the rotating disk 12, so that the rotating disk 12 always makes a circular motion with the positioning column 23 as the center.

[0031] like Figure 1-4 As shown, a plurality of positioning grooves 19 are provided on the inner surface of the bottom of the shell 1, and a plurality of sliders 18 are movably embedded in the inner surface of the plurality of positioning grooves 19. The positioning grooves 19 can limit the movement trajectory of the sliders 18 to avoid derailment of the sliders 18 and affect the use of the equipment.

[0032] Working principle: When using the fixing device for the circuit board of fire protection products, place the circuit board in the middle position of multiple clamps 8, then manually rotate the threaded rod 3, the threaded rod 3 will extend and retract into the shell 1, and push the clamping block 2 4, so that the clamping block 2 4 drives the two sliding rods 24 to slide, and the two limit blocks 25 can limit the maximum distance of movement of the sliding rods, and the clamping block 2 4 drives two of the clamps 6 forward, and two of the clamps 6 drive multiple clamps 8 forward. When the multiple clamps 8 come into contact with the circuit board, they will push the circuit board to the other two clamps 6 on the clamping block 2. When the circuit board touches the multiple clamps 6 on the other two clamps 6 After the clamp 8 is attached, because the outline of the circuit board is an irregular shape, after the circuit board hits the clamps 8 on the other two clamps 6, a clamp 8 on one of the clamps 6 is rotated around the corresponding positioning rod 7. When this clamp 8 is completely fitted with the circuit board, the clamp 6 corresponding to this clamp 8 will make an arc motion with the fixed rod 5 as the center, so that the other clamp 8 on this clamp 6 is close to the circuit board. Finally, this clamp 8 is completely fitted with the circuit board. The partition 9 can support the clamping block 2 4 and provide a good working environment for the clamping block 2 4. The gasket 26 can protect the circuit board from being damaged when the clamp 8 clamps the circuit board. In order to prevent the circuit board from being damaged due to excessive clamping force, when all the clamps 8 are in contact with the circuit board, the circuit board can be clamped and can adapt to different shapes of the circuit board, avoiding the problem of unstable clamping force caused by the use of springs. When the circuit board is fixed on the housing 1, the operating rod 20 is rotated to move the operating rod 20 on the inner surface of the operating groove 21. The operating rod 20 drives the rotating disk 12 to make a circular motion with the positioning column 23 as the center, so that the multiple positioning grooves 13 on the rotating disk 12 rotate, and there are sliders 14 inside the multiple positioning grooves 13, so the multiple sliders 14 will also rotate with the rotation of the rotating disk 12. Movement, because the movement of multiple sliders 14 makes multiple connecting rods 15 drive multiple working rods 16 to perform telescopic movement, the movement of multiple working rods 16 makes multiple sliders 2 18 move on the inner surface of multiple positioning grooves 2 19 through multiple connecting rods 2 17, and the telescopic movement of multiple working rods 16 makes multiple positioning plates 22 extend out of the shell 1, and the slide rod 11 can move on the inner surface of the slide groove 10, providing a good working environment for the rotating disk 12 and improving the service life of the rotating disk 12, so that the multiple positioning plates 22 can be fixed in the box, avoiding the use of bolts, the need to select corresponding installation tools, and improving the installation efficiency.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fixing device for a circuit board of a fire protection product, characterized in that: include: A shell (1), wherein the inner wall of the shell (1) is fixedly connected with a clamping block (2), a threaded rod (3) is movably sleeved on the side of the shell (1) away from the clamping block (2), and two sliding rods (24) are movably sleeved on the side of the shell (1) close to the threaded rod (3), and the two sliding rods (24) are fixedly connected with a clamping block (4) on the side close to the inside of the shell (1), and further comprising: a plurality of fixed rods (5), the outer surfaces of the plurality of fixed rods (5) are movably sleeved with clamps (6), the outer surfaces of the plurality of clamps (6) are fixedly connected with two positioning rods (7), the outer surfaces of the plurality of positioning rods (7) are movably sleeved with chucks (8), the inner surface of the shell (1) is fixedly connected with a partition (9) on the side close to the clamping block (2), and the plurality of chucks (8) are movably embedded in the outer surfaces of the plurality of clamps (6).

2. A fixing device for a circuit board of a fire protection product according to claim 1, characterized in that: The inner wall of the shell (1) is provided with a plurality of slide grooves (10), the inner surfaces of the plurality of slide grooves (10) are all movably embedded with slide rods (11), the plurality of slide rods (11) are fixedly connected with a rotating disk (12) on the side away from the plurality of slide grooves (10), the outer surface of the rotating disk (12) is provided with a plurality of positioning grooves (13), the inner surfaces of the plurality of positioning grooves (13) are all movably embedded with sliders (14).

3. The fixing device for a circuit board of a fire protection product according to claim 1, characterized in that: The plurality of fixing rods (5) are fixedly connected to the outer surfaces of the clamping block one (2) and the clamping block two (4); the plurality of clamps (6) are movably embedded in the outer surfaces of the clamping block one (2) and the clamping block two (4); the sides of the two sliding rods (24) away from the clamping block two (4) are fixedly connected to the limiting blocks (25); and the outer surfaces of the plurality of clamps (8) are fixedly connected to gaskets (26).

4. The fixing device for a circuit board of a fire protection product according to claim 2, characterized in that: The bottom outer surfaces of the plurality of sliding blocks (14) are all fixedly connected to connecting rods (15), and the bottom outer surfaces of the plurality of connecting rods (15) are all fixedly connected to working rods (16).

5. The fixing device for a circuit board of a fire protection product according to claim 2, characterized in that: An operating rod (20) is fixedly connected to the outer surface of the rotating disk (12); an operating groove (21) is provided on a side of the housing (1) close to the operating rod (20); and the operating rod (20) is movably embedded in the inner surface of the operating groove (21).

6. A fixing device for a circuit board of a fire protection product according to claim 4, characterized in that: The bottom outer surfaces of the plurality of working rods (16) are fixedly connected to connecting rod 2 (17), and the bottom outer surfaces of the plurality of connecting rods 2 (17) are fixedly connected to sliding blocks 2 (18).

7. A fixing device for a circuit board of a fire protection product according to claim 4, characterized in that: The outer surfaces of the plurality of working rods (16) are fixedly connected with positioning plates (22), a positioning column (23) is movably embedded at the bottom center of the rotating disk (12), and the positioning column (23) is fixedly connected to the bottom inner surface of the shell (1).

8. The fixing device for a circuit board of a fire protection product according to claim 6, characterized in that: The bottom inner surface of the housing (1) is provided with a plurality of second positioning grooves (19), and the plurality of second sliding blocks (18) are movably embedded in the inner surfaces of the plurality of second positioning grooves (19).

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