Current detection device of alternating current frequency converter

Abstract

The utility model discloses a current detection device of an AC frequency converter, comprising a main housing, one side of the front end of the bottom of the main housing is provided with a current input port, the front end of a main control circuit board is provided with a Hall element, and the bottom end of the main housing is provided with a winding assembly convenient for winding an overlong wire harness. According to the current detection device for the alternating-current frequency converter, by arranging the side supporting plates, the top fixing plate, the winding rods, the side edge anti-falling plates and the separation rings, when the current detection device is used, the two sets of winding rods facilitate winding of wires of different specifications, supporting is provided to prevent connector loosening caused by traction, the side edge anti-falling plates can prevent the wires from falling off from one side, and the service life of the wires is prolonged. The separating ring separates the input wire and the output wire, the input wire and the output wire are prevented from being tangled, the side supporting plate and the top fixing plate provide physical support for installation and fixation of the wire winding rod, the function of conveniently winding and bearing the wire harness is achieved, and the problem that the device does not have the function of conveniently winding and bearing the wire harness is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of current detection instruments, in particular to an AC inverter current detection device. Background Art

[0002] AC inverter is a common power equipment. It can convert AC power into DC power, and then use electronic components to switch the DC power to convert it into AC power. A current detection device is generally installed inside the AC inverter to maintain real-time monitoring of the input current.

[0003] Currently, most common current detection devices on the market are similar in structure. They are mainly composed of Hall elements, signal processing circuits and output circuits. They judge the current by measuring the potential difference. In actual use, there are some functional deficiencies and there is room for improvement. For example, the input and output wiring is generally plugged in the front or bottom of the device, and usually about one meter of long wires are reserved to facilitate subsequent replacement of connectors or other operations. Excessively long wiring harnesses are usually rolled into coils and suspended under the connector. The weight of the coil itself can easily cause pulling on the connector. Long-term pulling will increase the chance of the connector loosening, and it does not have the function of facilitating the reeling of the load-bearing wiring harness.

[0004] Now, a new type of AC inverter current detection device is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an AC inverter current detection device to solve the problem that the device has no function of facilitating the winding of the load-bearing wire harness as mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an AC inverter current detection device, comprising a main shell, a current input port is arranged on one side of the bottom front end of the main shell, a current output port is arranged on the other side of the bottom front end of the main shell, an operation panel is installed on one side of the front end of the main shell, a main control circuit board is fixedly connected to the rear end inside the main shell, a Hall element is installed on the front end of the main control circuit board, a rear mounting plate is fixedly connected to the rear end of the main shell, mounting screw eyes are respectively arranged at the four corners of the front end of the rear mounting plate, and a winding assembly for facilitating winding up of overlong wire harnesses is arranged at the bottom end of the main shell.

[0007] The winding assembly includes a side support plate, which is arranged on one side below the main shell, the top of the side support plate is fixedly connected to a top fixing plate, and the bottom of one side of the side support plate is transversely fixedly connected to two groups of winding rods.

[0008] Preferably, the top end of the top fixing plate is connected to the bottom end of the main shell, and one side of the side supporting plate is flush with one side of the main shell.

[0009] Preferably, the top of the winding rod is lower than the bottom of the current input port and the current output port, and there is a distance between the two groups of winding rods.

[0010] Preferably, a side anti-slip plate is fixedly connected to one side of the winding rod, and a separating ring is fixedly connected to the middle position of the outside of the winding rod.

[0011] Preferably, a buzzer is installed on the other side of the front end of the main shell, and a secondary circuit board is fixedly connected to one side of the front end inside the main shell.

[0012] Preferably, a temperature sensor is installed at the rear end of the auxiliary circuit board, and the buzzer, the auxiliary circuit board and the temperature sensor are electrically connected.

[0013] Preferably, the upper and lower ends of the rear surface of the rear installation plate are respectively evenly coated with adhesive tape, and the upper and lower ends of the rear surface of the rear installation plate are respectively applied with release paper.

[0014] Preferably, reserved grooves are respectively arranged inside both sides of the front end of the release paper, and the positions and sizes of the mounting screw eyes and the reserved grooves correspond one to one.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the AC inverter current detection device not only realizes the function of facilitating the winding of the load-bearing wire harness, but also realizes the function of alarming for abnormal internal temperature and the function of pre-fixing during installation;

[0016] (1) By providing a side support plate, a top fixing plate, a winding rod, a side anti-slip plate and a separating ring, when in use, the input line is connected to the current input port, and the output line is connected to the current output port. The Hall element measures the input current in real time and feeds back to the operation panel. During the wiring process, the excess wire harness can be directly wound on the winding rod. The two sets of winding rods facilitate the winding of wires of different specifications and provide support to prevent the joints from loosening due to pulling. The side anti-slip plate can prevent the wires from slipping from one side. The separating ring separates the input line and the output line to prevent the two from being entangled. The side support plate and the top fixing plate provide physical support for the installation and fixation of the winding rod, realizing the function of facilitating the winding and carrying of the wire harness;

[0017] (2) By providing a buzzer, a sub-circuit board and a temperature sensor, when in use, the temperature of the main control circuit board will rise during operation. The temperature sensor on the sub-circuit board monitors the operating temperature of the main control circuit board in real time. When the temperature exceeds a preset threshold, the buzzer sounds to remind the staff to turn off the power for inspection, thereby realizing the function of an abnormal internal temperature alarm;

[0018] (3) By providing the adhesive label, release paper and reserved groove, when in use, the rear mounting plate is fixed to the inner side of the AC inverter case, and the bolts are driven in from the mounting screw holes. Before driving the bolts in, the release paper on the back of the rear mounting plate is torn off, and then the surface with the adhesive label is pressed on the installation position, so that the rear mounting plate is directly adhered to the inside of the inverter, and then the bolts are driven in. No hand support is required when driving the bolts, which is more convenient to operate and realizes the function of pre-fixing the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;

[0020] Figure 2 This is a schematic diagram of the top view of the winding assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the rear cross-sectional structure of the main housing of the utility model;

[0022] Figure 4 It is a rear view structural schematic diagram of the rear mounting plate of the utility model.

[0023] In the figure: 1. Main housing; 2. Current input port; 3. Current output port; 4. Side support plate; 5. Top fixing plate; 6. Winding rod; 7. Side anti-slip plate; 8. Separation ring; 9. Operation panel; 10. Main control circuit board; 11. Hall element; 12. Buzzer; 13. Auxiliary circuit board; 14. Temperature sensor; 15. Rear mounting plate; 16. Mounting screw eye; 17. Self-adhesive label; 18. Release paper; 19. Reserved slot. 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 1-4 , an AC inverter current detection device, comprising a main housing 1, a current input port 2 is arranged on one side of the bottom front end of the main housing 1, a current output port 3 is arranged on the other side of the bottom front end of the main housing 1, an operation panel 9 is installed on one side of the front end of the main housing 1, a main control circuit board 10 is fixedly connected to the rear end of the main housing 1, a Hall element 11 is installed on the front end of the main control circuit board 10, a rear mounting plate 15 is fixedly connected to the rear end of the main housing 1, four corners of the front end of the rear mounting plate 15 are respectively provided with mounting screw eyes 16, and a reeling assembly for reeling in an overlong wire harness is arranged at the bottom end of the main housing 1;

[0026] See also Figure 1-4 , an AC inverter current detection device also includes a winding assembly, the winding assembly includes a side support plate 4, the side support plate 4 is arranged on one side below the main housing 1, the top of the side support plate 4 is fixedly connected to a top fixing plate 5, and the bottom of one side of the side support plate 4 is transversely fixedly connected to two sets of winding rods 6;

[0027] The top of the top fixing plate 5 is connected to the bottom of the main housing 1, one side of the side support plate 4 is flush with one side of the main housing 1, the top of the winding rod 6 is lower than the bottom of the current input port 2 and the current output port 3, there is a distance between the two sets of winding rods 6, one side of the winding rod 6 is fixedly connected to a side anti-slip plate 7, and a separation ring 8 is fixedly connected to the middle position of the outside of the winding rod 6, which is convenient for winding up excessively long wires and provides support to prevent the joints from loosening due to pulling;

[0028] Specifically, Figure 1 and Figure 2 As shown, two sets of winding rods 6 facilitate the winding of wires of different specifications, the side anti-slip plates 7 can prevent the wires from slipping off from one side, the dividing ring 8 separates the input line and the output line to prevent the two from getting entangled, and the side support plates 4 and the top fixing plates 5 provide physical support for the installation and fixation of the winding rod 6.

[0029] Embodiment 2: A buzzer 12 is installed on the other side of the front end of the main housing 1, a sub-circuit board 13 is fixedly connected to one side of the front end inside the main housing 1, a temperature sensor 14 is installed on the rear end of the sub-circuit board 13, and the buzzer 12, the sub-circuit board 13, and the temperature sensor 14 are electrically connected, so that the temperature inside the device can be monitored in real time;

[0030] Specifically, Figure 1 and Figure 3 As shown, the temperature sensor 14 on the auxiliary circuit board 13 monitors the working temperature of the main control circuit board 10 in real time. When the temperature exceeds a preset threshold, the buzzer 12 beeps to remind the staff to turn off the power for inspection.

[0031] Embodiment 3: The upper and lower ends of the rear of the rear mounting plate 15 are evenly coated with adhesive 17, and the upper and lower ends of the rear of the rear mounting plate 15 are respectively applied with release paper 18. The inside of the two sides of the front end of the release paper 18 are respectively provided with reserved grooves 19. The position and size of the mounting screw eye 16 and the reserved groove 19 correspond to each other, which plays a role of pre-fixation during installation and facilitates the insertion of bolts;

[0032] Specifically, Figure 1 and Figure 4 As shown, the release paper 18 on the back of the rear mounting plate 15 is torn off, and then the surface where the adhesive label 17 is located is pressed on the mounting position so that the rear mounting plate 15 is directly adhered to the inside of the inverter, and then the bolts are driven in. No hand support is required when driving the bolts, and the operation is more convenient.

[0033] Working principle: When the utility model is in use, first, the input line is connected to the current input port 2, and the output line is connected to the current output port 3. The Hall element 11 measures the input current in real time and feeds back to the operation panel 9. During the wiring process, the extra wire harness can be directly wound on the winding rod 6. The two sets of winding rods 6 are convenient for winding wires of different specifications. The side anti-slip plate 7 can prevent the wire from slipping from one side. The separation ring 8 separates the input line and the output line to prevent the two from getting entangled. The side support plate 4 and the top fixing plate 5 provide physical support for the installation and fixation of the winding rod 6. The temperature of the main control circuit board 10 will increase during operation. The temperature sensor 14 on the auxiliary circuit board 13 monitors the working temperature of the main control circuit board 10 in real time. When the temperature exceeds the preset threshold, the buzzer 12 beeps to remind the staff to turn off the power for inspection. The rear mounting plate 15 is fixed to the inner side of the AC inverter case, and the bolts are driven in from the mounting screw eyes 16. Before driving the bolts in, the release paper 18 on the back of the rear mounting plate 15 is torn off, and then the surface where the adhesive 17 is located is pressed on the installation position so that the rear mounting plate 15 is directly adhered to the inside of the inverter, and then the bolts are driven in. No hand support is required when driving the bolts, and the operation is more convenient.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An AC inverter current detection device, comprising a main housing (1), characterized in that: A current input port (2) is provided on one side of the front end of the bottom of the main housing (1), a current output port (3) is provided on the other side of the front end of the bottom of the main housing (1), an operation panel (9) is installed on one side of the front end of the main housing (1), a main control circuit board (10) is fixedly connected to the rear end of the main housing (1), a Hall element (11) is installed at the front end of the main control circuit board (10), a rear mounting plate (15) is fixedly connected to the rear end of the main housing (1), four corners of the front end of the rear mounting plate (15) are respectively provided with mounting screw eyes (16), and a reeling assembly for facilitating the reeling of an overlong wire harness is provided at the bottom end of the main housing (1); The winding assembly comprises a side support plate (4), the side support plate (4) being arranged on one side below the main housing (1), the top of the side support plate (4) being fixedly connected to a top fixing plate (5), and the bottom of one side of the side support plate (4) being laterally fixedly connected to two groups of winding rods (6).

2. The AC inverter current detection device according to claim 1, characterized in that: The top end of the top fixing plate (5) is connected to the bottom end of the main shell (1), and one side of the side supporting plate (4) is flush with one side of the main shell (1).

3. The AC inverter current detection device according to claim 1, characterized in that: The top of the winding rod (6) is lower than the bottom of the current input port (2) and the current output port (3), and there is a distance between the two groups of winding rods (6).

4. The AC inverter current detection device according to claim 1, characterized in that: A side anti-slip plate (7) is fixedly connected to one side of the winding rod (6), and a separation ring (8) is fixedly connected to the middle position of the outside of the winding rod (6).

5. The AC inverter current detection device according to claim 1, characterized in that: A buzzer (12) is installed on the other side of the front end of the main housing (1), and a secondary circuit board (13) is fixedly connected to one side of the front end inside the main housing (1).

6. The AC inverter current detection device according to claim 5, characterized in that: A temperature sensor (14) is installed at the rear end of the auxiliary circuit board (13), and the buzzer (12), the auxiliary circuit board (13) and the temperature sensor (14) are electrically connected.

7. The AC inverter current detection device according to claim 1, characterized in that: The upper and lower ends of the rear of the rear installation plate (15) are respectively evenly coated with adhesive tape (17), and the upper and lower ends of the rear of the rear installation plate (15) are respectively applied with release paper (18).

8. The AC inverter current detection device according to claim 7, characterized in that: Reserved grooves (19) are respectively arranged inside the two sides of the front end of the release paper (18), and the positions and sizes of the mounting screw eyes (16) and the reserved grooves (19) correspond to each other.

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