Output sampling circuit of AC-DC converter

Abstract

The utility model relates to an AC / DC converter output sampling circuit, which comprises a shell, a circuit board is arranged at the top of the shell, four supporting holes are formed in the top surface of the circuit board, four supporting rods are fixedly connected to the inner bottom wall of the shell, supporting plates are fixedly connected to the top surfaces of the four supporting rods, and the supporting plates are fixedly connected to the bottom wall of the shell. The top faces of the four supporting plates are fixedly connected with connecting rods, the four connecting rods penetrate through the four supporting holes correspondingly and extend to the top of the circuit board, and four fixing plates are placed on the top face of the circuit board. According to the output sampling circuit of the alternating-current and direct-current converter, the circuit board is fixed under the action of the fixing plate, operation of workers is facilitated, the fixing plate is supported through cooperation between the rubber block and the fixing groove, the stability of the fixing plate is improved, meanwhile, the circuit board is supported under the action of the supporting plate, and the stability of the circuit board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of AC / DC converters, in particular to an AC / DC converter output sampling circuit. Background Art

[0002] The AC / DC converter is a device that converts AC power into equivalent DC power. The sampling circuit has an analog signal input, a control signal input and an analog signal output. The function of this circuit is to receive the input voltage at a certain specified time and maintain the voltage at the output until the next sampling begins. The sampling circuit usually consists of an analog switch, a holding capacitor and a common-phase circuit with a unit gain of 1.

[0003] Chinese patent CN217354859U discloses a circuit board for a high-speed turbine blower. The patent discloses a technical solution with a compact structure and reasonable layout, which solves the problem that most existing circuit boards have unreasonable layouts, resulting in the circuit boards being large in size while ensuring high power density and high efficiency, and being unable to meet usage requirements.

[0004] When the device is in use, the DC signal is converted into an AC signal through the action of the DC-AC converter, and the AC signal is sent to the motor by the output copper column. However, the circuit board is generally fixed on the shell by bolts, and the threaded connection is easily affected by external factors, resulting in thread slippage and rust, etc., which makes it inconvenient for staff to disassemble and assemble the circuit board. Therefore, an AC-DC converter output sampling circuit is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an AC / DC converter output sampling circuit, which has the advantage of convenient disassembly and assembly, and solves the problem that when the device is in use, a DC signal is converted into an AC signal under the action of the DC / AC converter, and the AC signal is sent to the motor by the output copper column. However, the circuit board is generally fixed to the housing by bolts, and the threaded connection is easily affected by external factors, resulting in thread slippage and rust, etc., making it inconvenient for staff to disassemble and assemble the circuit board.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an AC / DC converter output sampling circuit, comprising a shell, a circuit board is placed on the top of the shell, four support holes are opened on the top surface of the circuit board, and four support rods are fixedly connected to the inner bottom wall of the shell.

[0007] The top surfaces of the four support rods are fixedly connected to support plates, the top surfaces of the four support plates are fixedly connected to connecting rods, the four connecting rods respectively penetrate the four support holes and extend to the top of the circuit board, four fixing plates are placed on the top surface of the circuit board, the bottom surfaces of the four fixing plates are fixedly connected to rubber blocks, fixing grooves are opened all around the top surface of the circuit board, and the four rubber blocks respectively extend to the inside of the four fixing grooves.

[0008] The four connecting rods are each provided with a supporting assembly for supporting the fixing plate.

[0009] The four connecting rods are each provided with a limiting assembly for limiting the supporting assembly.

[0010] Furthermore, the top surfaces of the four support plates are all in contact with the bottom surface of the circuit board, and the four connecting rods are respectively gap-matched with the four support holes.

[0011] Furthermore, the bottom surfaces of the four fixing plates are all in contact with the top surface of the circuit board, and the rubber block is in contact with the fixing groove.

[0012] Furthermore, the support assembly includes a mounting groove, which is opened inside the connecting rod, and the fixing plate extends to the inside of the mounting groove, and the inside of the mounting groove is fixedly connected with a mounting plate, and the left side and the right side of the mounting plate are fixedly connected with a telescopic rod, and the side of the two telescopic rods away from the mounting plate are fixedly connected with a connecting plate, the connecting plate and the fixing plate are fixedly connected, and the outer peripheral walls of the two telescopic rods are respectively provided with springs fixedly connected to the mounting plate and the connecting plate.

[0013] Furthermore, the installation slot is a through slot, and the two connecting plates are both fitted with the installation slot.

[0014] Furthermore, the telescopic rod is composed of a sleeve and a moving rod, one end of the moving rod penetrates and extends into the interior of the sleeve, the outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve, and one side of the sleeve is provided with a through hole adapted to the moving rod.

[0015] Furthermore, the limit assembly includes four sliders, which are respectively fixedly connected to the top and bottom surfaces of the two connecting plates. Two sliding grooves are opened inside the connecting rod. The sliders extend into the inside of the sliding grooves. The front and back sides of the four sliders are fixedly connected with rubber pads.

[0016] Furthermore, the sliding block is slidably connected to the sliding groove, and the rubber pad is fitted to the sliding groove.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The AC / DC converter output sampling circuit fixes the circuit board through the action of the fixing plate, which is convenient for the staff to operate. The fixing plate is supported by the cooperation between the rubber block and the fixing groove to improve the stability of the fixing plate. At the same time, the circuit board is supported by the action of the supporting plate to improve the stability of the circuit board;

[0019] 2. The AC / DC converter output sampling circuit supports the connecting plate through the action of the spring to improve the stability of the fixed plate. The connecting plate is supported through the sliding connection between the slider and the slide groove to improve the stability of the connecting plate. At the same time, the slider is supported through the fit between the rubber pad and the slide groove to improve the stability of the slider, which is more convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 for Figure 1 A is a schematic diagram of the structure enlargement;

[0022] Figure 3 It is a three-dimensional schematic diagram of the connecting plate in the structure of the utility model.

[0023] In the figure: 1 housing, 2 support rod, 3 support plate, 4 connecting rod, 5 circuit board, 6 support hole, 7 fixing groove, 8 rubber block, 9 fixing plate, 10 connecting plate, 11 slider, 12 rubber pad, 13 slide groove, 14 mounting groove, 15 mounting plate, 16 telescopic rod, 17 spring. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1: Please refer to Figure 1-3 In this embodiment, an AC / DC converter output sampling circuit includes a shell 1, a circuit board 5 is placed on the top of the shell 1, four supporting holes 6 are opened on the top surface of the circuit board 5, and four supporting rods 2 are fixedly connected to the inner bottom wall of the shell 1.

[0026] The top surfaces of the four support rods 2 are fixedly connected to the support plates 3, the top surfaces of the four support plates 3 are fixedly connected to the connecting rods 4, the four connecting rods 4 respectively pass through the four support holes 6 and extend to the top of the circuit board 5, four fixing plates 9 are placed on the top surface of the circuit board 5, the bottom surfaces of the four fixing plates 9 are fixedly connected to rubber blocks 8, the top surface of the circuit board 5 is provided with fixing grooves 7 all around, and the four rubber blocks 8 extend to the inside of the four fixing grooves 7 respectively.

[0027] Among them, the top surfaces of the four support plates 3 are all in contact with the bottom surface of the circuit board 5, the four connecting rods 4 are respectively fitted with the four support holes 6, the bottom surfaces of the four fixing plates 9 are all in contact with the top surface of the circuit board 5, and the rubber block 8 is in contact with the fixing groove 7.

[0028] Specifically, the circuit board 5 is pushed to fit the circuit board 5 and the support plate 3, the connecting rod 4 passes through the support hole 6, the fixing plate 9 is located on the top of the circuit board 5, the support plate 3 supports the circuit board 5, the fixing plate 9 is reset, the circuit board 5 squeezes the rubber block 8 to deform the rubber block 8, the fixing plate 9 and the circuit board 5 fit together, the rubber block 8 enters the inside of the fixing groove 7, and then restricts the fixing plate 9, and then fixes the circuit board 5.

[0029] Example 2: Please refer to Figure 1-3 In this embodiment, on the basis of the first embodiment, four connecting rods 4 are provided with support components, the support components include a mounting groove 14, the mounting groove 14 is opened inside the connecting rod 4, the fixing plate 9 extends to the inside of the mounting groove 14, the inside of the mounting groove 14 is fixedly connected with a mounting plate 15, the left side and the right side of the mounting plate 15 are fixedly connected with a telescopic rod 16, the side of the two telescopic rods 16 away from the mounting plate 15 are fixedly connected with a connecting plate 10, the connecting plate 10 and the fixing plate 9 are fixedly connected, and the outer peripheral walls of the two telescopic rods 16 are respectively provided with springs 17 fixedly connected to the mounting plate 15 and the connecting plate 10.

[0030] Among them, the installation groove 14 is a through groove, and the two connecting plates 10 are both in contact with the installation groove 14. The telescopic rod 16 is composed of a sleeve and a moving rod. One end of the moving rod passes through and extends to the interior of the sleeve. The outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve, and a through hole matching the moving rod is opened on one side of the sleeve.

[0031] Specifically, the fixing plate 9 is pushed to move the fixing plate 9, which drives the connecting plate 10 to move, squeezes the telescopic rod 16 and the spring 17 to shrink the telescopic rod 16 and the spring 17, and allows the fixing plate 9 to enter the interior of the mounting groove 14. The fixing plate 9 is located on the top of the circuit board 5. The fixing plate 9 is loosened, and the fixing plate 9 is pushed to reset under the action of the spring 17.

[0032] Example 3: Please refer to Figure 1-3In this embodiment, on the basis of the first and second embodiments, the four connecting rods 4 are provided with limit assemblies, the limit assemblies include four sliders 11, the four sliders 11 are respectively fixedly connected to the top and bottom surfaces of the two connecting plates 10, two slide grooves 13 are opened inside the connecting rod 4, the sliders 11 extend to the inside of the slide grooves 13, and the front and back sides of the four sliders 11 are fixedly connected with rubber pads 12.

[0033] The slider 11 is slidably connected to the slide groove 13 , and the rubber pad 12 is fitted to the slide groove 13 .

[0034] Specifically, the connecting plate 10 is supported by the sliding connection between the slider 11 and the slide groove 13 to improve the stability of the connecting plate 10 , and the slider 11 is supported by the fit between the rubber pad 12 and the slide groove 13 to improve the stability of the slider 11 .

[0035] The working principle of the above embodiment is:

[0036] The fixing plate 9 is pushed to move the fixing plate 9, drive the connecting plate 10 to move, squeeze the telescopic rod 16 and the spring 17, shrink the telescopic rod 16 and the spring 17, and make the fixing plate 9 enter the interior of the mounting groove 14, support the connecting plate 10 through the sliding connection between the slider 11 and the slide groove 13, improve the stability of the connecting plate 10, support the slider 11 through the fit between the rubber pad 12 and the slide groove 13, improve the stability of the slider 11, push the circuit board 5, make the circuit board 5 and the support plate 3 fit, the connecting rod 4 passes through the supporting hole 6, the fixing plate 9 is located at the top of the circuit board 5, the support plate 3 supports the circuit board 5, loosen the fixing plate 9, and push the fixing plate 9 to reset under the action of the spring 17, the circuit board 5 squeezes the rubber block 8 to deform the rubber block 8, the fixing plate 9 and the circuit board 5 fit, the rubber block 8 enters the interior of the fixing groove 7, and then restricts the fixing plate 9, and then fixes the circuit board 5.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An AC / DC converter output sampling circuit, comprising a housing (1), characterized in that: A circuit board (5) is placed on the top of the housing (1), four supporting holes (6) are opened on the top surface of the circuit board (5), and four supporting rods (2) are fixedly connected to the inner bottom wall of the housing (1); The top surfaces of the four support rods (2) are fixedly connected to support plates (3), the top surfaces of the four support plates (3) are fixedly connected to connecting rods (4), the four connecting rods (4) respectively penetrate the four support holes (6) and extend to the top of the circuit board (5), four fixing plates (9) are placed on the top surface of the circuit board (5), the bottom surfaces of the four fixing plates (9) are fixedly connected to rubber blocks (8), the top surface of the circuit board (5) is provided with fixing grooves (7) all around, and the four rubber blocks (8) respectively extend to the inside of the four fixing grooves (7); The four connecting rods (4) are each provided with a supporting assembly, and the four connecting rods (4) are each provided with a limiting assembly.

2. The AC / DC converter output sampling circuit according to claim 1, characterized in that: The top surfaces of the four support plates (3) are all in contact with the bottom surface of the circuit board (5), and the four connecting rods (4) are respectively clearance-matched with the four support holes (6).

3. The AC / DC converter output sampling circuit according to claim 2, characterized in that: The bottom surfaces of the four fixing plates (9) are all in contact with the top surface of the circuit board (5), and the rubber block (8) is in contact with the fixing groove (7).

4. The AC / DC converter output sampling circuit according to claim 1, characterized in that: The support assembly comprises a mounting groove (14), wherein the mounting groove (14) is arranged inside the connecting rod (4), the fixing plate (9) extends into the mounting groove (14), the mounting groove (14) is fixedly connected to the inside of the mounting groove (14), the left side and the right side of the mounting plate (15) are fixedly connected to telescopic rods (16), the side of the two telescopic rods (16) away from the mounting plate (15) are fixedly connected to the connecting plate (10), the connecting plate (10) and the fixing plate (9) are fixedly connected, and the outer peripheral walls of the two telescopic rods (16) are respectively provided with springs (17) fixedly connected to the mounting plate (15) and the connecting plate (10).

5. The AC / DC converter output sampling circuit according to claim 4, characterized in that: The installation groove (14) is a through groove, and the two connecting plates (10) are both fitted with the installation groove (14).

6. The AC / DC converter output sampling circuit according to claim 5, characterized in that: The telescopic rod (16) is composed of a sleeve and a moving rod, one end of the moving rod penetrates and extends into the sleeve, the outer side of the moving rod is fixedly connected to a limiting block located inside the sleeve, and one side of the sleeve is provided with a through hole adapted to the moving rod.

7. The AC / DC converter output sampling circuit according to claim 4, characterized in that: The limit assembly comprises four sliders (11), the four sliders (11) are respectively fixedly connected to the top surface and the bottom surface of the two connecting plates (10), the connecting rod (4) is provided with two slide grooves (13) inside, the sliders (11) extend into the inside of the slide grooves (13), and the front and back surfaces of the four sliders (11) are fixedly connected with rubber pads (12).

8. The AC / DC converter output sampling circuit according to claim 7, characterized in that: The sliding block (11) and the sliding groove (13) are slidably connected, and the rubber pad (12) and the sliding groove (13) are in close contact with each other.

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