Frequency converter grounding structure and frequency converter device

Abstract

The utility model relates to the technical field of frequency converter auxiliary components, in particular to a frequency converter grounding structure and a frequency converter device, which comprise a quick release component, a pushing component and a connecting piece, the top of the quick release component is connected to the bottom of the pushing component, and the bottom of the quick release component is connected to the top of the connecting piece; the pushing assembly comprises a U-shaped plate, a guide hole is formed in the top of the U-shaped plate, and the hole wall of the guide hole is connected to the side portion of a guide rod in a sliding and sleeving mode. According to the utility model, the spring I rebounds and pushes the moving block to move towards the grounding insertion block, so that the moving block pushes the grounding insertion block out of the through groove, the grounding insertion block is separated from the fixed block, the grounding wire is disconnected from the frequency converter body, and the frequency converter body is convenient to maintain and replace; and a worker does not need to manually pull the grounding insertion block, so that the safety of the worker is guaranteed, and the grounding insertion block is more convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter auxiliary components, in particular to a frequency converter grounding structure and a frequency converter device. Background Art

[0002] A frequency converter (VFD) is a power control device that utilizes frequency conversion and microelectronics technology to control AC motors by varying the motor's operating power supply frequency. It primarily consists of a rectifier, filter, inverter, brake unit, drive unit, detection unit, and microprocessor unit. To ensure the safety of power electronic equipment, various protection circuits are typically incorporated into the main circuit input. These protection circuits must be grounded to prevent damage to the power electronic equipment due to static electricity.

[0003] Application No.: CN202322482344.8 During the use of the "inverter grounding structure", after the ground wire terminal block is installed on the inverter circuit board, the grounding plug block and the grounding wire are detachably electrically connected to the ground wire terminal block by vertically sliding cooperation with the installation slot of the ground wire terminal block and horizontally sliding cooperation with the limit rod and the limit hole. When the grounding plug block and the installation slot are specifically matched, since the spring is in a pre-stretched state and the inner end of the limit rod is in contact with the limit hole, the elastic force of the spring during pre-stretching can press the limit rod against the limit hole, and then press the grounding plug block against the inner wall of the installation slot in contact, thereby ensuring that the grounding plug block is in good contact with the ground wire terminal block and can conduct electricity smoothly. The fixed combination method of the grounding plug block, the grounding wire and the ground wire terminal block is simple and easy to operate, which is convenient for The grounding plug and grounding wire are quickly fixed to the grounding terminal block and then grounded for use. At the same time, it replaces the compression fixing method of adding screws to avoid damage to the wire end. At the same time, the length of the grounding wire should be able to make the fixing plate contact the ground. The lower end of the grounding wire should be securely fixed to the ground by adding bolts to the ground through the fixing plate, so as to achieve good grounding of the frequency converter circuit board. Subsequently, you only need to hold the handle and pull the limit rod out of the limit hole to make the grounding plug vertically out of the installation slot and remove the grounding plug and grounding wire from the grounding terminal block. The method of disassembling the grounding plug and grounding wire from the grounding terminal block is simple and easy to operate, which is convenient for the smooth inspection and replacement of the grounding wire after removing the grounding plug and grounding wire. It should be noted that before removing the grounding plug, the power supply of the frequency converter circuit board should be completely cut off to ensure safe operation.

[0004] If the installation slot and the grounding plug in the above-mentioned inverter grounding structure fit tightly, the grounding plug may not be able to naturally fall out of the installation slot, which requires the staff to manually pull the grounding plug out of the installation slot. If the equipment forgets to turn off the power, it increases the danger to the staff, and also makes it inconvenient to remove the grounding plug. Utility Model Content

[0005] The purpose of the present utility model is to provide a frequency converter grounding structure and a frequency converter device, which do not require staff to manually pull the grounding plug, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an inverter grounding structure, comprising a quick-release assembly, a pushing assembly, and a connecting piece, wherein the top of the quick-release assembly is connected to the bottom of the pushing assembly, and the bottom of the quick-release assembly is connected to the top of the connecting piece;

[0007] In which, the pushing assembly includes: a U-shaped plate, a guide hole is opened on the top of the U-shaped plate, the hole wall of the guide hole is slidably sleeved on the side of the guide rod, the top end of the guide rod is fixedly connected to the bottom of the limit plate, the bottom end of the guide rod is fixedly connected to the top of the moving block, the side of the guide rod is slidably inserted into the inner ring of spring one, and the two ends of the spring one are supported between the moving block and the U-shaped plate.

[0008] Preferably, the quick-release assembly includes a fixing block, a side portion of which is fixedly mounted on the outside of a frequency conversion circuit board, and the frequency conversion circuit board is fixedly mounted in a frequency converter body.

[0009] Preferably, a through groove is provided inside the fixing block, and the top of the fixing block is fixedly connected to the two ends of the bottom of the U-shaped plate.

[0010] Preferably, the groove wall of the through groove is slidably sleeved on the side of the movable block, and the side of the fixed block is provided with a through hole.

[0011] Preferably, the hole wall of the through hole is slidably sleeved on the outside of one end of the positioning rod, and the other end of the positioning rod is fixedly connected to the outside of the pull ring.

[0012] Preferably, the outer portion of the positioning rod is slidably inserted into the inner portion of one side of the U-shaped frame, and the outer portion of the positioning rod is also fixedly connected to the inner ring of the circular plate.

[0013] Preferably, a second spring is provided between the circular plate and the U-shaped frame, and the inner ring of the second spring is slidably sleeved on the outside of the positioning rod.

[0014] Preferably, the connecting member comprises a grounding plug, the outer portion of the grounding plug is slidably plugged into the slot wall of the through slot, and a grounding wire is welded to the bottom of the grounding plug.

[0015] Preferably, a positioning groove is provided on the side of the grounding plug, and the groove wall of the positioning groove is slidably sleeved on the outside of one end of the positioning rod.

[0016] A frequency converter device comprises any one of the frequency converter grounding structures described above.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model uses a spring to rebound and push the moving block to move in the direction of the grounding plug block, so that the moving block pushes the grounding plug block out of the through slot, thereby realizing the separation of the grounding plug block from the fixed block, and then disconnecting the ground wire from the inverter body, so as to facilitate the inspection and replacement of the inverter body. At the same time, during the disconnection process, there is no need for workers to manually pull the grounding plug block, which ensures the safety of workers and makes it more convenient to disassemble the grounding plug block.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a schematic diagram of the structure of the propulsion component of the present utility model;

[0022] Figure 3 This is a schematic diagram of the quick-release assembly structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the connector structure of the present invention.

[0024] In the figure: 1. Pushing assembly; 11. Limiting plate; 12. Guide rod; 13. Spring 1; 14. U-shaped plate; 15. Moving block; 2. Quick release assembly; 22. Fixed block; 23. Through slot; 24. Through hole; 25. Positioning rod; 26. Round plate; 27. Spring 2; 28. U-shaped frame; 29. ​​Pull ring; 3. Connector; 31. Positioning slot; 32. Grounding plug; 33. Grounding wire; 4. Frequency conversion circuit board; 5. Frequency converter body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4The utility model provides a technical solution: an inverter grounding structure, including a quick-release component 2, a pushing component 1, and a connecting member 3. The top of the quick-release component 2 is connected to the bottom of the pushing component 1, and the bottom of the quick-release component 2 is connected to the top of the connecting member 3.

[0027] like Figure 2 As shown, the pushing assembly 1 includes: a U-shaped plate 14, a guide hole is opened at the top of the U-shaped plate 14, the hole wall of the guide hole is slidably sleeved on the side of the guide rod 12, the top end of the guide rod 12 is fixedly connected to the bottom of the limit plate 11, the bottom end of the guide rod 12 is fixedly connected to the top of the moving block 15, the side of the guide rod 12 is slidably inserted into the inner ring of the spring 13, and the two ends of the spring 13 are supported between the moving block 15 and the U-shaped plate 14.

[0028] Further, such as Figure 2 As shown, when one end of the positioning rod 25 is pulled out from the positioning slot 31 on the side of the grounding plug 32, the spring 13 rebounds and pushes the movable block 15 to move in the direction of the grounding plug 32, thereby causing the movable block 15 to push the grounding plug 32 out of the through slot 23, thereby achieving the separation of the grounding plug 32 from the fixed block 22, and then disconnecting the grounding wire 33 from the inverter body 5, so as to facilitate the inspection and replacement of the inverter body 5. At the same time, during the disconnection process, there is no need for the staff to manually pull the grounding plug 32, which ensures the safety of the staff and makes the grounding plug 32 more convenient to disassemble.

[0029] like Figure 3 As shown, the quick-release assembly 2 includes a fixed block 22, the side of which is fixedly mounted on the outside of the frequency conversion circuit board 4, which is fixedly mounted in the frequency converter body 5. A through slot 23 is provided inside the fixed block 22, and the top of the fixed block 22 is fixedly connected to the two ends of the bottom of the U-shaped plate 14. The groove wall of the through slot 23 is slidably mounted on the side of the movable block 15, and a through hole 24 is formed on the side of the fixed block 22. The hole wall of the through hole 24 is slidably mounted on the outside of one end of the positioning rod 25, and the other end of the positioning rod 25 is fixedly connected to the outside of the pull ring 29. The outside of the positioning rod 25 is slidably inserted into the inside of one side of the U-shaped frame 28, and the outside of the positioning rod 25 is also fixedly connected to the inner ring of the circular plate 26. A spring 27 is provided between the circular plate 26 and the U-shaped frame 28, and the inner ring of the spring 27 is slidably mounted on the outside of the positioning rod 25.

[0030] Further, such as Figure 3As shown, when it is necessary to disconnect the inverter body 5 from the ground wire, it is only necessary to pull the pull ring 29 in the direction away from the U-shaped frame 28. The pull ring 29 drives the positioning rod 25 to move, so that one end of the positioning rod 25 is pulled out from the positioning groove 31 on the side of the grounding plug 32, so that the grounding plug 32 can be separated from the through groove 23, thereby achieving the disconnection of the grounding wire 33 from the inverter body 5; wherein, the U-shaped frame 28, the positioning rod 25 and the pull ring 29 are all made of insulating materials to ensure contact safety.

[0031] Further, such as Figure 3 As shown, when the grounding plug 32 needs to be connected to the fixed block 22, it is only necessary to insert the grounding plug 32 into the through slot 23. Before insertion, the end of the positioning rod 25 should be pulled away from the through slot 23 to prevent the grounding plug 32 from obstructing the end of the positioning rod 25 from inserting into the through slot 23. During the insertion of the grounding plug 32 into the through slot 23, the grounding plug 32 will push the movable block 15 to move in the direction of the spring 13, thereby causing the movable block 15 to compress the spring 13; when the positioning slot 31 on the side of the grounding plug 32 moves to align with the through hole 24, the spring 27 pushes the circular plate 26, and the circular plate 26 drives the positioning rod 25, so that one end of the positioning rod 25 is inserted into the positioning slot 31, so that the grounding plug 32 and the fixed block 22 are fixedly connected, and the entire connection process is simple and convenient.

[0032] The connector 3 includes a grounding plug 32 . The outer portion of the grounding plug 32 is slidably plugged into the slot wall of the through slot 23 . A grounding wire 33 is welded to the bottom of the grounding plug 32 .

[0033] A positioning slot 31 is defined on the side of the grounding plug 32 , and a slot wall of the positioning slot 31 is slidably sleeved onto the outside of one end of the positioning rod 25 .

[0034] A frequency converter device includes a frequency converter grounding structure.

[0035] Working principle: During use, when it is necessary to disconnect the inverter body 5 from the ground wire, it is only necessary to pull the pull ring 29 in the direction away from the U-shaped frame 28. The pull ring 29 drives the positioning rod 25 to move, so that one end of the positioning rod 25 is pulled out from the positioning slot 31 on the side of the grounding plug 32. At this time, the spring 13 rebounds and pushes the moving block 15 to move in the direction of the grounding plug 32, so that the moving block 15 pushes the grounding plug 32 out of the through slot 23, thereby realizing the separation of the grounding plug 32 from the fixed block 22, and then disconnecting the grounding wire 33 from the inverter body 5, so as to facilitate the inspection and replacement of the inverter body 5. At the same time, during the disconnection process, there is no need for the staff to manually pull the grounding plug 32, which ensures the safety of the staff and makes the disassembly of the grounding plug 32 more convenient.

[0036] When the grounding plug 32 needs to be connected to the fixed block 22, it is only necessary to insert the grounding plug 32 into the through slot 23. Before insertion, the end of the positioning rod 25 should be pulled away from the through slot 23 to prevent the end of the positioning rod 25 from being blocked from inserting the grounding plug 32 into the through slot 23. During the insertion of the grounding plug 32 into the through slot 23, the grounding plug 32 will push the movable block 15 to move in the direction of the spring 13, thereby causing the movable block 15 to compress the spring 13; when the positioning slot 31 on the side of the grounding plug 32 moves to align with the through hole 24, the spring 27 pushes the circular plate 26, and the circular plate 26 drives the positioning rod 25, so that one end of the positioning rod 25 is inserted into the positioning slot 31, so that the grounding plug 32 and the fixed block 22 are fixedly connected, and the entire connection process is simple and convenient.

[0037] On the other hand, this embodiment provides a frequency converter device, which includes a frequency converter grounding structure.

[0038] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frequency converter grounding structure, comprising a quick-release assembly (2), characterized in that: It also includes a pushing component (1) and a connecting piece (3), wherein the top of the quick-release component (2) is connected to the bottom of the pushing component (1), and the bottom of the quick-release component (2) is connected to the top of the connecting piece (3); The pushing assembly (1) comprises a U-shaped plate (14), a guide hole is provided at the top of the U-shaped plate (14), the hole wall of the guide hole is slidably sleeved on the side of the guide rod (12), the top end of the guide rod (12) is fixedly connected to the bottom of the limit plate (11), the bottom end of the guide rod (12) is fixedly connected to the top of the moving block (15), the side of the guide rod (12) is slidably inserted into the inner ring of the spring (13), and the two ends of the spring (13) are supported between the moving block (15) and the U-shaped plate (14).

2. The inverter grounding structure according to claim 1, characterized in that: The quick-release assembly (2) comprises a fixed block (22), the side of which is fixedly mounted on the outside of a frequency conversion circuit board (4), and the frequency conversion circuit board (4) is fixedly mounted in a frequency converter body (5).

3. The inverter grounding structure according to claim 2, characterized in that: A through slot (23) is provided inside the fixing block (22), and the top of the fixing block (22) is fixedly connected to both ends of the bottom of the U-shaped plate (14).

4. The inverter grounding structure according to claim 3, characterized in that: The groove wall of the through groove (23) is slidably sleeved on the side of the movable block (15), and a through hole (24) is provided on the side of the fixed block (22).

5. The inverter grounding structure according to claim 4, characterized in that: The hole wall of the through hole (24) is slidably sleeved on the outside of one end of the positioning rod (25), and the other end of the positioning rod (25) is fixedly connected to the outside of the pull ring (29).

6. The inverter grounding structure according to claim 5, characterized in that: The outer portion of the positioning rod (25) is slidably inserted into the inner portion of one side of the U-shaped frame (28), and the outer portion of the positioning rod (25) is also fixedly connected to the inner ring of the circular plate (26).

7. The inverter grounding structure according to claim 6, characterized in that: A second spring (27) is provided between the circular plate (26) and the U-shaped frame (28), and the inner ring of the second spring (27) is slidably sleeved on the outside of the positioning rod (25).

8. The inverter grounding structure according to claim 3, characterized in that: The connecting member (3) comprises a grounding plug (32), the outer portion of the grounding plug (32) is slidably plugged into the slot wall of the through slot (23), and a grounding wire (33) is welded to the bottom of the grounding plug (32).

9. The inverter grounding structure according to claim 8, characterized in that: A positioning groove (31) is provided on the side of the grounding plug (32), and the groove wall of the positioning groove (31) is slidably sleeved on the outside of one end of the positioning rod (25).

10. A frequency converter device, characterized in that: The invention comprises a frequency converter grounding structure as described in any one of claims 1 to 9.

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