A frequency converter with a multi-liquid crystal operation keyboard

Abstract

The utility model discloses a kind of frequency converter with multiple liquid crystal operation keyboard, it is related to frequency converter technical field.The utility model includes frequency converter cabinet and the frequency converter box door of being set in the rear side of frequency converter cabinet, several fixed screws are provided in the frequency converter box door, further include: fixed part, the fixed part is installed in the frequency converter box door;Limiting portion, the limiting portion is set in the frequency converter box door;The fixed part includes installation component, and the installation component is installed in the frequency converter box door;Positioning assembly, the positioning assembly is set in the frequency converter box door.The utility model is set by fixed part, solved the existing frequency converter in use process, it is inconvenient to disassemble and maintain multiple liquid crystal operation keyboard, lead to when needing maintenance, staff needs to disassemble entire frequency converter, this not only time-consuming and labor-consuming, but also easy to damage multiple liquid crystal operation keyboard, affect subsequent maintenance work problem.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter technology, and in particular relates to a frequency converter with multiple LCD operation keyboards. Background Technology

[0002] As a core piece of equipment in the industrial drive sector, frequency converters are widely used in various production scenarios, playing a role in motor speed regulation and operation control. Traditional operating components have a single display format, which is difficult to adapt to the needs of parameter viewing and multi-location control under complex working conditions. Multi-LCD operating keyboards, with their advantages of multi-screen display and zoned control, can simultaneously present operating data, parameter information and fault prompts, greatly improving the ease of operation. This type of supporting structure also has certain requirements for basic maintenance work such as daily equipment inspection and fault diagnosis, and requires regular daily maintenance.

[0003] However, existing frequency converters are not convenient to disassemble and maintain with their multi-LCD operation keyboards during use. This means that when maintenance is needed, the entire frequency converter must be disassembled by the staff, which is not only time-consuming and labor-intensive, but also easily damages the multi-LCD operation keyboards and affects subsequent maintenance work. Utility Model Content

[0004] The purpose of this utility model is to provide a frequency converter with a multi-LCD operation keyboard. By setting a fixing part, the problem of the inconvenience of disassembling and maintaining the multi-LCD operation keyboard in the existing frequency converter during use is solved. When maintenance is required, the staff has to disassemble the entire frequency converter, which is not only time-consuming and laborious, but also easy to damage the multi-LCD operation keyboard and affect subsequent maintenance work.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a frequency converter with a multi-LCD operation keyboard, comprising a frequency converter chassis and a frequency converter door located on the rear side of the chassis. The frequency converter door contains a plurality of fixing screws and further comprises: a fixing part installed inside the frequency converter door; a limiting part located inside the frequency converter door; the fixing part includes a mounting assembly installed inside the frequency converter door; and a positioning assembly located inside the frequency converter door. The mounting assembly includes a plurality of bolts located inside the frequency converter door, each bolt having a cover plate on its front side, and each bolt having a first nut and a second nut. The first nuts and the second nuts are respectively adapted to the respective bolts.

[0006] Furthermore, the limiting part includes a connecting component installed on the front side of the cover plate; and a snap-fit ​​component, wherein two snap-fit ​​components are provided, both of which are located on the front side of the cover plate and are mirror images of each other.

[0007] Furthermore, the positioning component includes an operating keyboard protective shell fixedly connected to the rear of several bolts. A positioning element is provided inside the operating keyboard protective shell, which is located on the rear side of the inverter box door. The positioning element includes a positioning plate fixedly connected to the inner wall of the operating keyboard protective shell, and a positioning groove is provided on the inner wall of the positioning plate.

[0008] Furthermore, the connection component includes a multi-LCD operation keypad disposed on the rear side of the cover plate, and the front side of the multi-LCD operation keypad has two receiving slots, which are mirror images of each other.

[0009] Furthermore, the snap-fit ​​assembly includes an elastic sheet fixedly connected to the inner wall of the receiving groove. A handle is fixedly connected to the front side of the elastic sheet. A limiting element is provided on the elastic sheet. The elastic sheet is made of elastic material. The limiting element includes several slots opened on the side of the elastic sheet away from the multi-LCD operation keyboard. The several slots are arranged in an array and are all adapted to the inverter box door.

[0010] This utility model has the following beneficial effects: 1. By setting a fixing part, during use, bolts are passed through the inverter box door and the operation keyboard protective shell, and the bolts are fastened to the inverter box door with the matching nut one. The cover plate is set on the front side of the bolt, and the cover plate is fixed with the matching nut two. The positioning component is supported by the operation keyboard protective shell. The positioning plate and positioning groove on the inner wall of the shell form a positioning fit for the multi-LCD operation keyboard. All components work together to complete the overall assembly and positioning, which can provide positioning constraints for the multi-LCD operation keyboard, so that the operation keyboard protective shell and the inverter box door can be stably assembled, ensuring the accurate installation position of the multi-LCD operation keyboard. At the same time, its modular components with detachable bolt and nut structure can facilitate the disassembly and assembly of the multi-LCD operation keyboard, providing convenient operating conditions for subsequent maintenance work. 2. By setting a limiting part, during the installation process, the connecting component connects the cover plate and the multi-LCD operation keyboard. The elastic plates of the two mirror-set snap-fit ​​components are fixed to the inner wall of the receiving groove of the multi-LCD operation keyboard. The slots on the elastic plates are adapted to the inverter box door and form a snap-fit. The handle is fixed to the front side of the elastic plate, which can drive the elastic plate to bend in the receiving groove to release the slot from the inverter box door. This can achieve snap-fit ​​limiting and initial fixation of the multi-LCD operation keyboard, prevent it from shifting and loosening during the tightening of the nut, improve the overall assembly stability, and further facilitate subsequent disassembly and maintenance operations.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This utility model Figure 1 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the overall structure of the cover plate of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of B in the diagram; Figure 6 This is a partial structural diagram of the snap-fit ​​assembly of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 101. Inverter chassis; 102. Inverter door; 103. Fixing screw; 2. Fixing part; 21. Mounting assembly; 211. Bolt; 212. Cover plate; 213. Nut 1; 214. Nut 2; 22. Positioning assembly; 221. Keyboard protective shell; 222. Positioning plate; 223. Positioning groove; 3. Limiting part; 31. Connecting assembly; 311. Multi-LCD keyboard; 312. Receiving groove; 32. Snap-fit ​​assembly; 321. Elastic sheet; 322. Handle; 323. Slot. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-6As shown, this utility model is a frequency converter with multiple LCD operation keyboards, including a frequency converter chassis 101 and a frequency converter door 102 disposed on the rear side of the frequency converter chassis 101. The frequency converter door 102 is provided with a plurality of fixing screws 103. It also includes: a fixing part 2, which is installed inside the frequency converter door 102; and a limiting part 3, which is disposed inside the frequency converter door 102.

[0017] The fixing part 2 includes a mounting assembly 21, which is installed inside the inverter enclosure door 102; and a positioning assembly 22, which is also located inside the inverter enclosure door 102. The mounting assembly 21 includes a plurality of bolts 211 located inside the inverter enclosure door 102. A cover plate 212 is provided on the front side of each bolt 211. Nut 213 and nut 214 are provided on the outside of each bolt 211. Nut 213 and nut 214 are respectively adapted to each bolt 211. The positioning assembly 22 includes a protective shell 221 for the operating keyboard fixedly connected to the rear side of the bolts 211. The keyboard protective shell 221 is equipped with a positioning component. The keyboard protective shell 221 is located on the rear side of the inverter box door 102. The positioning component includes a positioning plate 222 fixedly connected to the inner wall of the keyboard protective shell 221. The inner wall of the positioning plate 222 is provided with a positioning groove 223. By setting the fixing part 2, the positioning constraint of the multi-LCD operation keyboard 311 can be provided, so that the keyboard protective shell 221 and the inverter box door 102 can be stably assembled, ensuring that the installation position of the multi-LCD operation keyboard 311 is accurate. At the same time, its modular components, combined with the detachable bolts 211 and nut structure, can facilitate the disassembly and assembly of the multi-LCD operation keyboard 311, providing convenient operating conditions for subsequent maintenance work.

[0018] The limiting part 3 includes a connecting component 31, which is installed on the front side of the cover plate 212; and a locking component 32, of which two are provided, both located on the front side of the cover plate 212 and mirror images of each other. The connecting component 31 includes a multi-LCD operation keyboard 311 located on the rear side of the cover plate 212. The front side of the multi-LCD operation keyboard 311 has two receiving slots 312, which are mirror images of each other. The locking component 32 includes an elastic piece 321 fixedly connected to the inner wall of the receiving slot 312. A handle 322 is fixedly connected to the front side of the device. A limiting component is provided on the elastic sheet 321. The elastic sheet 321 is made of elastic material. The limiting component includes several slots 323 opened on the side of the elastic sheet 321 away from the multi-LCD operation keyboard 311. The slots 323 are arranged in an array and are all adapted to the inverter box door 102. By setting the limiting part 3, the multi-LCD operation keyboard 311 can be snapped and initially fixed to prevent it from shifting and loosening during the tightening of the nut, thereby improving the overall assembly stability and further facilitating subsequent disassembly and maintenance operations.

[0019] A specific application of this embodiment is as follows: During assembly, the bolts 211 can be inserted into the inverter box door 102 through the operation keyboard protective shell 221. Then, several nuts 213 can be screwed onto the bolts 211 and tightened. The multi-LCD operation keyboard 311 can be aligned with the operation keyboard protective shell 221 and then inserted into the inverter box door 102. It is positioned by the positioning plate 222 and the positioning groove 223. During the process of inserting the multi-LCD operation keyboard 311 into the inverter box door 102, several slots 323 on the elastic sheet 321 will lock the inverter box door 102, thereby completing the initial fixation. After positioning, the cover plate 212 can be placed on the multi-LCD operation keyboard 311, and several nuts 214 can be screwed onto several bolts 211 respectively, thereby completing the fixation of the cover plate 212, which in turn completes the fixation of the multi-LCD operation keyboard 311. After it is fixed, the inverter box door 102 can be placed on the inverter chassis 101 and fixed with several fixing screws 103; When maintenance is required on the multi-LCD operation keypad 311, the inverter box door 102 can be removed, and the second nut 214 can be unscrewed to pull out the cover plate 212. Then, the two handles 322 can be pressed to make the elastic sheet 321 bend in the receiving groove 312. Then the multi-LCD operation keypad 311 can be pulled out for maintenance. After maintenance, the reverse operation can be performed to complete the reset. After the reset is completed, the multi-LCD operation keypad 311 can be operated through the operation keypad protective shell 221 to control the inverter box 101.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A frequency converter with multiple LCD operation keyboards, comprising a frequency converter chassis and a frequency converter door disposed on the rear side of the frequency converter chassis, wherein a plurality of fixing screws are disposed inside the frequency converter door, characterized in that, Also includes: The fixing part is installed inside the inverter enclosure door; A limiting part is provided inside the inverter enclosure door; The fixing part includes a mounting assembly, which is installed inside the inverter enclosure door; as well as A positioning component, wherein the positioning component is disposed inside the inverter enclosure door; The installation assembly includes several bolts installed inside the inverter box door, a cover plate is provided on the front side of the several bolts, a nut one is provided on the outside of the several bolts, and a nut two is provided on the outside of the several bolts. Among them, several nuts are matched with several bolts, and several nuts are matched with several bolts.

2. The frequency converter with multiple LCD operation keyboards according to claim 1, characterized in that, The limiting part includes a connecting component, which is installed on the front side of the cover plate; as well as The snap-fit ​​assembly has two components, both of which are located on the front side of the cover plate; The two card-connecting components are mirror images of each other.

3. The frequency converter with multiple LCD operation keyboards according to claim 1, characterized in that, The positioning component includes a keyboard protective shell fixedly connected to the rear of several bolts, and a positioning element is provided inside the keyboard protective shell; The control keyboard protective cover is located on the back side of the inverter enclosure door.

4. A frequency converter with multiple LCD operation keyboards according to claim 2, characterized in that, The connection assembly includes a multi-LCD operation keyboard disposed on the rear side of the cover plate, and two receiving slots are provided on the front side of the multi-LCD operation keyboard. The two receiving slots are mirror images of each other.

5. A frequency converter with multiple LCD operation keyboards according to claim 2, characterized in that, The snap-fit ​​assembly includes an elastic sheet fixedly connected to the inner wall of the receiving groove, a handle fixedly connected to the front side of the elastic sheet, and a limiting element provided on the elastic sheet; The elastic sheet is made of an elastic material.

6. A frequency converter with multiple LCD operation keyboards according to claim 3, characterized in that, The positioning component includes a positioning plate fixedly connected to the inner wall of the keyboard protective shell, and the inner wall of the positioning plate is provided with a positioning groove.

7. A frequency converter with multiple LCD operation keyboards according to claim 5, characterized in that, The limiting component includes several slots formed on the side of the elastic sheet away from the multi-LCD operation keyboard; Among them, several of the card slots are arranged in an array and are all adapted to the inverter box door.

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