Positioning structure for power unit control panel of low-power high-voltage frequency converter

Abstract

The utility model relates to the technical field of frequency converters, in particular to a low-power high-voltage frequency converter power unit control panel positioning structure, which comprises a positioning frame, four wire pressing structures are arranged on the outer surface of the positioning frame, and each wire pressing structure comprises a lower pressing plate; side columns are fixedly installed on the two sides of the outer surfaces of the four lower pressing plates, the outer surfaces of the four side columns are sleeved with upper pressing plates, through the positioning frame, the control panel body and the line pressing structure, when the control panel body is installed and fixed, the control panel body is fixed in the positioning frame, then wiring is conducted on the control panel body, and after wiring is completed, the control panel body is fixed to the positioning frame. The fastening bolts on the two sides of the upper pressing plate are unscrewed, at the moment, the first spring releases force to bounce the upper pressing plate upwards, at the moment, after one end of the wiring penetrates through the wire hooping groove, the pressing handle is pressed downwards, the upper pressing plate makes contact with the lower pressing plate again to hoop the wiring, then the wiring is fixed through the fastening bolts on the two sides, and therefore the purposes of fixing the wiring conveniently and avoiding winding of the wiring are achieved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a positioning structure for a power unit control board of a low-power high-voltage frequency converter. Background Technology

[0002] A frequency converter (VFD) is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of its power supply. A VFD mainly consists of a rectification unit (AC to DC), a filter, an inverter (DC to AC), a braking unit, a drive unit, a detection unit, and a microprocessor unit. The VFD adjusts the voltage and frequency of the output power supply by switching its internal IGBTs (Insulated Gate Bipolar Transistors), providing the required power voltage according to the actual needs of the motor, thereby achieving energy saving and speed regulation. In addition, VFDs have many protection functions, such as overcurrent, overvoltage, and overload protection. With the continuous improvement of industrial automation, VFDs have been widely used.

[0003] The existing positioning of the power unit control board inside the frequency converter has certain shortcomings during installation and fixation: the existing unit control board is usually directly fixed inside the frequency converter with screws during installation, which makes it inconvenient to organize the wiring of the internal components of the control board, resulting in messy and tangled wiring inside the frequency converter. Based on the shortcomings of the existing technology, this utility model designs a positioning structure for the power unit control board of a low-power high-voltage frequency converter. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a positioning structure for the power unit control board of a low-power high-voltage frequency converter, which has the advantages of facilitating the fixing of wiring and preventing it from becoming tangled.

[0005] This utility model provides the following technical solution: a positioning structure for a power unit control board of a low-power high-voltage frequency converter, including a positioning frame, four pressure wire structures on the outer surface of the positioning frame, each pressure wire structure including a lower pressure plate; side columns are fixedly installed on both sides of the outer surface of the four lower pressure plates, upper pressure plates are sleeved on the outer surface of the four side columns, a first spring is fixedly installed on the top of the four lower pressure plates, one end of the top of the four first springs is fixedly connected to the upper pressure plate, a pressing handle is fixedly installed on the top of the four upper pressure plates, fastening bolts are threaded on both sides of the four upper pressure plates, and three sets of hoop grooves are opened inside the four lower pressure plates and the four upper pressure plates, with gaskets arranged inside the three sets of hoop grooves.

[0006] As a preferred embodiment of this utility model, two limiting plates are fixedly installed inside the positioning frame, and a control plate body is placed between the two limiting plates.

[0007] As a preferred embodiment of this utility model, four connecting plates are fixedly installed on the outer surface of the positioning frame, and heat dissipation vents are provided on both sides of the interior of the positioning frame.

[0008] As a preferred technical solution of this utility model, clamping plate structures are fixedly installed on both sides of the outer surface of the positioning frame, and the two clamping plate structures include a circular hole plate and a fixing sleeve.

[0009] As a preferred technical solution of this utility model, two circular hole plates are fixed inside the positioning frame, and a second spring is fixedly installed on one side of the two circular hole plates, and a first fixing plate is fixedly installed on one end of the two second springs.

[0010] As a preferred embodiment of this utility model, a knob is rotatably mounted on one side of each of the two first fixing plates, side blocks are fixedly mounted on both sides of the two knobs, and a handle is fixedly mounted on one side of the outer surface of each knob.

[0011] As a preferred embodiment of this utility model, a pressure rod is fixedly installed on one side of the first fixing plate, and a second fixing plate is fixedly installed on one end of the pressure rod.

[0012] As a preferred technical solution of this utility model, the fixing sleeve is fitted onto the outer surface of the throttle, the top two sides of the fixing sleeve are provided with slots, and the inside of the fixing sleeve is provided with an inner groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This positioning structure for the power unit control board of a low-power high-voltage frequency converter, consisting of a positioning frame, a control board body, and a wire clamping structure, allows for easy installation and fixing of the control board body. The control board body is fixed inside the positioning frame, and then wires are connected. After wiring, the fastening bolts on both sides of the upper pressure plate are loosened. The first spring releases its force, causing the upper pressure plate to spring upwards. One end of the wire is then passed through the wire clamping groove, and the pressing handle is pressed downwards to bring the upper and lower pressure plates into contact again, clamping the wire. The wire is then secured by the fastening bolts on both sides. This design facilitates wire fixing and prevents tangling.

[0015] 2. This positioning structure for the power unit control board of a low-power high-voltage frequency converter uses a clamping plate structure. By placing the control board body between two limiting plates and then pressing the knob inward, the second spring is compressed, causing the pressure rod to drive the second fixing plate to clamp the side of the control board body. When the pressure rod moves to its maximum extent, by holding the handle and rotating it 90°, the side block is locked inside the inner groove, fixing the knob. When it needs to be removed, the knob is rotated in the opposite direction to make the side block pop out of the slot. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the heat dissipation port structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the pressing handle structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the hoop groove structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model;

[0021] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Positioning frame; 2. Control panel body; 3. Pressure wire structure; 31. Lower pressure plate; 32. Side column; 33. Upper pressure plate; 34. Press handle; 35. Fastening bolt; 36. First spring; 37. Hoop groove; 4. Clamping plate structure; 41. Round hole plate; 42. Second spring; 43. First fixing plate; 44. Knob; 45. Side block; 46. Turn handle; 47. Fixing sleeve; 48. Inner groove; 49. Slot; 410. Pressure rod; 411. Second fixing plate; 5. Connecting plate; 6. Limiting plate; 7. Heat dissipation vent. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 A positioning structure for a power unit control board of a low-power high-voltage frequency converter includes a positioning frame 1. Four pressure wire structures 3 are provided on the outer surface of the positioning frame 1. Each pressure wire structure 3 includes a lower pressure plate 31. Side posts 32 are fixedly installed on both sides of the outer surface of the four lower pressure plates 31. Upper pressure plates 33 are sleeved on the outer surface of the four side posts 32. First springs 36 are fixedly installed on the top of the four lower pressure plates 31. One end of the top of each of the four first springs 36 is fixedly connected to the upper pressure plate 33. Press handles 34 are fixedly installed on the top of the four upper pressure plates 33. Fastening bolts 35 are threaded onto both sides of the four upper pressure plates 33. Three sets of wire grooves 37 are formed inside the four lower pressure plates 31 and the four upper pressure plates 33. Gaskets are provided inside the three sets of wire grooves 37.

[0025] Please see Figure 1-2 The positioning frame 1 has two limiting plates 6 fixedly installed inside, and the control board body 2 is placed between the two limiting plates 6. Four connecting plates 5 are fixedly installed on the outer surface of the positioning frame 1, and heat dissipation vents 7 are provided on both sides of the inside of the positioning frame 1.

[0026] The control board body 2 can be limited by the limiting plate 6. The positioning frame 1 can be fixed inside the frequency converter by the four connecting plates 5. The control board body 2 inside the positioning frame 1 can be cooled by the heat dissipation vent 7.

[0027] Please see Figure 5-6 The positioning frame 1 has two clamping plate structures 4 fixedly installed on both sides of its outer surface. Each clamping plate structure 4 includes a perforated plate 41 and a fixing sleeve 47. The two perforated plates 41 are fixed inside the positioning frame 1. A second spring 42 is fixedly installed on one side of each perforated plate 41, and a first fixing plate 43 is fixedly installed at one end of each second spring 42. A knob 44 is rotatably installed on one side of each first fixing plate 43. Side blocks 45 are fixedly installed on both sides of each knob 44, and a handle 46 is fixedly installed on one side of the outer surface of each knob 44. A pressure rod 410 is fixedly installed on one side of each first fixing plate 43, and a second fixing plate 411 is fixedly installed at one end of the pressure rod 410.

[0028] By placing the control panel body 2 between the two limiting plates 6, and then pressing the knob 44 inward, the second spring 42 is compressed, causing the pressure rod 410 to drive the second fixing plate 411 to clamp the side of the control panel body 2. When the pressure rod 410 moves to its maximum extent, by holding the handle 46 and rotating it 90°, the side block 45 is locked inside the inner groove 48, fixing the knob 44. When it needs to be removed, rotate the knob 44 in the opposite direction to make the side block 45 pop out of the slot 49.

[0029] Working principle: When using the positioning structure of a power unit control board for a low-power high-voltage frequency converter, first place the control board body 2 between the two limit plates 6, then press the knob 44 inwards. At this time, the second spring 42 is compressed, causing the pressure rod 410 to drive the second fixing plate 411 to clamp the side of the control board body 2. When the pressure rod 410 moves to its maximum extent, hold the handle 46 and rotate it 90° to make the side block 45 lock inside the inner groove 48, thus fixing the knob 44. Then, wire the control board body 2. After the wiring is completed, loosen the fastening bolts 35 on both sides of the upper pressure plate 33. At this time, the first spring 36 releases the force and makes the upper pressure plate 33 spring upwards. Then, pass one end of the wire through the wire clamping groove 37 and press down the pressing handle 34 to make the upper pressure plate 33 contact the lower pressure plate 31 again to clamp the wire. Then, fix it by the fastening bolts 35 on both sides.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning structure for a power unit control board of a low-power high-voltage frequency converter, comprising a positioning frame (1), characterized in that: The outer surface of the positioning frame (1) is provided with four pressure line structures (3), and the four pressure line structures (3) include a lower pressure plate (31). Side posts (32) are fixedly installed on both sides of the outer surface of the four lower pressure plates (31). Upper pressure plates (33) are sleeved on the outer surface of the four side posts (32). First springs (36) are fixedly installed on the top of the four lower pressure plates (31). One end of the top of the four first springs (36) is fixedly connected to the upper pressure plate (33). Press handles (34) are fixedly installed on the top of the four upper pressure plates (33). Fastening bolts (35) are threaded on both sides of the four upper pressure plates (33). Three sets of hoop grooves (37) are opened inside the four lower pressure plates (31) and the four upper pressure plates (33). Gaskets are provided inside the three sets of hoop grooves (37).

2. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 1, characterized in that: Two limiting plates (6) are fixedly installed inside the positioning frame (1), and a control plate body (2) is placed between the two limiting plates (6).

3. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 1, characterized in that: Four connecting plates (5) are fixedly installed on the outer surface of the positioning frame (1), and heat dissipation vents (7) are provided on both sides of the inside of the positioning frame (1).

4. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 1, characterized in that: The positioning frame (1) has clamping structures (4) fixedly installed on both sides of its outer surface. The two clamping structures (4) include a round hole plate (41) and a fixing sleeve (47).

5. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 4, characterized in that: Two circular hole plates (41) are fixed inside the positioning frame (1). A second spring (42) is fixedly installed on one side of the two circular hole plates (41), and a first fixing plate (43) is fixedly installed on one end of the two second springs (42).

6. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 5, characterized in that: A knob (44) is rotatably mounted on one side of each of the two first fixing plates (43), and a side block (45) is fixedly mounted on both sides of the two knobs (44). A handle (46) is fixedly mounted on one side of the outer surface of each knob (44).

7. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 5, characterized in that: A pressure rod (410) is fixedly installed on one side of the first fixing plate (43), and a second fixing plate (411) is fixedly installed on one end of the pressure rod (410).

8. The positioning structure of the power unit control board of a low-power high-voltage frequency converter according to claim 4, characterized in that: The fixing sleeve (47) is fitted on the outer surface of the throttle (46). The fixing sleeve (47) has slots (49) on both sides of the top, and an inner groove (48) is formed inside the fixing sleeve (47).

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