A protective cover for frequency converters

Abstract

This utility model relates to the field of frequency converter technology, and in particular to a protective cover for frequency converters. It includes a frequency converter body with several terminals fixedly mounted on it. Two sets of side plates are symmetrically arranged on both sides of the frequency converter body, and the side plates are fixedly connected to the frequency converter body. A top cover and a bottom cover are installed between the two sets of side plates, and both the top and bottom covers are rotatably connected to the side plates. This application, through the cooperation of the sealing cap of the top cover, the sealing strip of the bottom cover, and the sealing seat, forms a multi-layer sealing structure, which can effectively prevent dust, moisture, etc., from entering the frequency converter, protecting key components such as the terminals, greatly improving the protection performance of the frequency converter, and reducing the probability of failure caused by external factors. Both the top and bottom covers are rotatably connected to the side plates.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to a protective cover for frequency converters. Background Technology

[0002] In modern industrial production and the operation of various electrical equipment, the frequency converter, as a core device capable of precisely regulating motor speed, achieving efficient and energy-saving operation, and optimizing equipment control performance, is of paramount importance. From drive systems in large industrial production lines to ventilation and air conditioning control systems in intelligent buildings, frequency converters are widely used in various fields, providing crucial support for the stable operation and intelligent control of equipment.

[0003] Traditional frequency inverters have significant shortcomings in terms of protection performance. Many protective covers only provide basic shielding and are insufficient to effectively prevent the intrusion of external pollutants such as dust and moisture. In some industrial production environments, such as cement plants and coal mines, the air is filled with a large amount of dust particles. These fine dust particles can easily enter the inside of the frequency inverter through gaps and holes in the protective covers, gradually accumulating on critical components such as wiring terminals and circuit boards. They are particularly detrimental to wiring connections, frequently causing disconnections. Utility Model Content

[0004] This utility model solves the problems in related technologies and proposes a protective cover for frequency converters.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A protective cover for a frequency converter includes a frequency converter body, on which several wiring terminals are fixedly installed. Two sets of side plates are symmetrically arranged on both sides of the frequency converter body. The side plates are fixedly connected to the frequency converter body. A top cover and a bottom cover are installed between the two sets of side plates. The top cover and the bottom cover are rotatably connected to the side plates. Several sealing seats are installed on the bottom cover. The sealing seats are engaged and fixed with the bottom cover. Several pressure-holding rods that cooperate with the bottom cover are provided at the head of the top cover. The pressure-holding rods are fixedly connected to the top cover.

[0007] As a preferred embodiment, the inverter body is provided with a positioning shell for installing wiring terminals. The positioning shell is fixedly connected to the inverter body, and the upper surface of the positioning shell is evenly provided with a number of operating slots corresponding to the wiring terminals.

[0008] As a preferred embodiment, the top cover includes a top flip cover and a connecting sleeve. A sealing cap corresponding to the operating groove is fixedly installed on the lower end face of the top flip cover. The connecting sleeve is located at the rear end of the top flip cover and is integrally formed with the top flip cover. A positioning shaft for rotating the connecting sleeve is provided on the inner side of the side plate.

[0009] As a preferred embodiment, the pressure rod assembly includes a vertical rod and a rubber pressure pad, the vertical rod being fixedly installed on the top flip cover, and the rubber pressure pad being fixedly installed on the lower end face of the vertical rod.

[0010] As a preferred embodiment, the bottom cover includes a bottom flip cover and a connecting shaft. The connecting shaft is symmetrically installed on both sides of the bottom flip cover and is fixedly connected to the bottom flip cover. The inner side of the side plate is provided with positioning holes for the installation of the connecting shaft.

[0011] As a preferred embodiment, the upper surface of the bottom flap is provided with a vertical groove and a side groove for installing the sealing seat, and a sealing strip is also fixedly installed on the inner side of the bottom flap.

[0012] As a preferred embodiment, the sealing seat includes a U-shaped rubber seat and side wing strips that cooperate with the side groove. The side wing strips are symmetrically installed on both sides of the U-shaped rubber seat, and the side wing strips are integrally formed with the U-shaped rubber seat.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This application forms a multi-layer sealing structure through the cooperation of the sealing cap of the top cover, the sealing strip of the bottom cover, and the sealing seat. This effectively prevents dust, moisture, etc., from entering the inverter, protecting key components such as wiring terminals, greatly improving the inverter's protection performance, and reducing the probability of failures caused by external factors. Both the top and bottom covers are rotatably connected to the side plates, allowing users to easily open and close the protective covers, facilitating wiring, maintenance, and repair operations of the inverter. Simultaneously, the corresponding design of the operating groove on the positioning shell and the sealing cap makes wiring operations more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 yes Figure 1 Side view of the device shown;

[0016] Figure 3 This is a perspective view of the top cover and the pressure rod assembly in an embodiment of the present utility model.

[0017] Figure 4 yes Figure 3 Side view of the device shown;

[0018] Figure 5This is a perspective view of the bottom cover in an embodiment of this utility model;

[0019] Figure 6 This is a perspective view of the sealing seat in an embodiment of this utility model.

[0020] In the diagram: 1. Inverter body; 11. Terminal block; 12. Side plate; 13. Positioning housing; 131. Operating slot; 2. Top cover; 21. Top flip cover; 211. Sealing cap; 22. Connecting sleeve; 3. Bottom cover; 31. Bottom flip cover; 311. Vertical slot; 312. Side slot; 313. Sealing bar; 32. Connecting shaft; 4. Sealing seat; 41. U-shaped rubber seat; 42. Side wing strip; 5. Pressure rod assembly; 51. Vertical rod; 52. Rubber pressure pad. Detailed Implementation

[0021] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] Reference Figure 1 , Figure 2 and Figure 3As shown, a protective cover for a frequency converter includes a frequency converter body 1. Several terminals 11 are fixedly installed on the frequency converter body 1. Two sets of side plates 12 are symmetrically arranged on both sides of the frequency converter body 1, and the side plates 12 are fixedly connected to the frequency converter body 1. A top cover 2 and a bottom cover 3 are installed between the two sets of side plates 12, and both the top cover 2 and the bottom cover 3 are rotatably connected to the side plates 12. Several sealing seats 4 are installed on the bottom cover 3, and the sealing seats 4 are engaged and fixedly fixed to the bottom cover 3. Several pressure-holding rod groups 5 that cooperate with the bottom cover 3 are provided at the head of the top cover 2, and the pressure-holding rod groups 5 are fixedly connected to the top cover 2. By providing side plates 12 on the frequency converter body 1 and installing rotatable top and bottom covers 2 and 3 between the side plates 12, it is convenient to protect and operate the frequency converter. When protection is required, the top cover 2 and bottom cover 3 can be flipped and snapped together, thus effectively protecting the terminals. The sealing seat 4 on the bottom cover 3 cooperates with the pressure rod assembly 5 on the top cover 2 to enhance the sealing performance of the protective cover, effectively preventing dust, moisture, etc. from entering the inverter, protecting key components such as the terminals 11, and extending the service life of the inverter. The inverter body 1 is provided with a positioning shell 13 for installing the terminals 11. The positioning shell 13 is fixedly connected to the inverter body 1, and the upper surface of the positioning shell 13 is evenly provided with several operating grooves 131 corresponding to the terminals 11. The positioning shell 13 provides a stable installation position for the terminals 11, and the operating grooves 131 facilitate wiring operations on the terminals 11. It also facilitates the cooperation between the sealing cap 211 and the operating grooves 131 to further improve the sealing effect and ensure the safety of the terminals 11.

[0028] Reference Figure 3 and Figure 4As shown, the top cover 2 includes a top flip cover 21 and a connecting sleeve 22. A sealing cap 211 corresponding to the operating slot 131 is fixedly installed on the lower end face of the top flip cover 21. The connecting sleeve 22 is located at the rear end of the top flip cover 21 and is integrally formed with the top flip cover 21. A positioning shaft for rotating the connecting sleeve 22 is provided on the inner side of the side plate 12. The top cover 2 adopts a structure design of a top flip cover 21 and a connecting sleeve 22. The sealing cap 211 on the lower end face of the top flip cover 21 corresponds to the operating slot 131, sealing the operating slot 131 and preventing dust and moisture from entering. The connecting sleeve 22 is rotatably connected to the positioning shaft on the side plate 12, allowing the top flip cover 21 to rotate flexibly, facilitating the opening and closing of the protective cover and convenient maintenance and repair of the frequency converter. The pressure rod assembly 5 includes a vertical rod 51 and a rubber pressure pad 52. The vertical rod 51 is fixedly installed on the top flip cover 21, and the rubber pressure pad 52 is fixedly installed on the lower end face of the vertical rod 51. The vertical rod 51 of the pressure rod assembly 5 is fixed to the top flip cover 21, and the rubber pressure pad 52 is installed on the lower end face of the vertical rod 51. When the top cover 2 is closed, the rubber pressure pad 52 can press tightly against the cable of the bottom cover 3, enhancing the sealing effect on the cable. At the same time, the rubber pressure pad 52 has a certain elasticity, which can buffer the pressure and avoid damage to the cable.

[0029] Reference Figure 5 As shown, the bottom cover 3 includes a bottom flip cover 31 and a connecting shaft 32. The connecting shaft 32 is symmetrically installed on both sides of the bottom flip cover 31 and is fixedly connected to the bottom flip cover 31. Positioning holes for installing the connecting shaft 32 are provided on the inner side of the side plate 12. The bottom cover 3 adopts a structure of bottom flip cover 31 and connecting shaft 32. The connecting shaft 32 cooperates with the positioning holes on the side plate 12, allowing the bottom flip cover 31 to rotate around the connecting shaft 32, facilitating the opening and closing of the bottom cover 3. This structural design facilitates the protection and operation of the bottom of the frequency converter, while also ensuring the stability of the bottom cover 3. The upper end face of the bottom flip cover 31 has a vertical groove 311 and a side groove 312 for installing the sealing seat 4, and a sealing crossbar 313 is also fixedly installed on the inner side of the bottom flip cover 31. The vertical groove 311 and side groove 312 on the upper end face of the bottom flip cover 31 are used to install the sealing seat 4, accurately fixing the position of the sealing seat 4 and improving the installation stability of the sealing seat 4. The sealing strip 313 further enhances the sealing performance of the bottom cover 3, preventing dust and moisture from entering the inverter from the bottom.

[0030] Reference Figure 6As shown, the sealing seat 4 includes a U-shaped rubber seat 41 and side wing strips 42 that cooperate with the side groove 312. The side wing strips 42 are symmetrically installed on both sides of the U-shaped rubber seat 41, and the side wing strips 42 and the U-shaped rubber seat 41 are integrally formed. The U-shaped rubber seat 41 and the side wing strips 42 of the sealing seat 4 are integrally formed. The U-shaped rubber seat 41 can tightly wrap the wiring cable. The side wing strips 42 cooperate with the side groove 312, which further enhances the tightness of the connection between the sealing seat 4 and the bottom cover 3, improves the overall sealing effect, and effectively protects the inverter's wiring terminals 11 and the corresponding connecting cables.

[0031] In this embodiment, when wiring operations are required for the frequency converter, the top cover 2 and the bottom cover 3 are rotated to open them, and the wiring terminals 11 are connected through the operating groove 131 on the positioning housing 13. After wiring is completed, the cable is passed through the U-shaped rubber seat 41 in the bottom cover 3, and then the top cover 2 and the bottom cover 3 are closed. At this time, the sealing cap 211 of the top cover 2 is tightly fitted with the operating groove 131, and the rubber pressure pad 52 of the pressure rod assembly 5 presses on the cable on the U-shaped rubber seat 41. The sealing seat 4 and the sealing crossbar 313 further enhance the sealing effect, effectively preventing dust, moisture, etc. from entering the inside of the frequency converter and protecting the normal operation of the frequency converter.

[0032] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A protective cover for a frequency converter, comprising a frequency converter body (1), characterized in that: The inverter body (1) is fixedly installed with several terminals (11), and two sets of side plates (12) are symmetrically arranged on both sides of the inverter body (1). The side plates (12) are fixedly connected to the inverter body (1). A top cover (2) and a bottom cover (3) are installed between the two sets of side plates (12). The top cover (2) and the bottom cover (3) are rotatably connected to the side plates (12). Several sealing seats (4) are installed on the bottom cover (3). The sealing seats (4) are engaged and fixed with the bottom cover (3). Several pressure rod groups (5) that cooperate with the bottom cover (3) are provided at the head of the top cover (2). The pressure rod groups (5) are fixedly connected to the top cover (2).

2. The protective cover for a frequency converter according to claim 1, characterized in that: The inverter body (1) is provided with a positioning shell (13) for mounting the wiring terminal (11). The positioning shell (13) is fixedly connected to the inverter body (1), and the upper surface of the positioning shell (13) is evenly provided with a plurality of operating slots (131) corresponding to the wiring terminal (11).

3. A protective cover for a frequency converter according to claim 2, characterized in that: The top cover (2) includes a top flip cover (21) and a connecting sleeve (22). A sealing cap (211) corresponding to the operating groove (131) is fixedly installed on the lower end face of the top flip cover (21). The connecting sleeve (22) is located at the rear end of the top flip cover (21) and is integrally formed with the top flip cover (21). A positioning shaft for the connecting sleeve (22) to be rotatably installed is provided on the inner side of the side plate (12).

4. A protective cover for a frequency converter according to claim 3, characterized in that: The pressure rod assembly (5) includes a vertical rod (51) and a rubber pressure pad (52). The vertical rod (51) is fixedly installed on the top flip cover (21), and the rubber pressure pad (52) is fixedly installed on the lower end face of the vertical rod (51).

5. A protective cover for a frequency converter according to claim 4, characterized in that: The bottom cover (3) includes a bottom flip cover (31) and a connecting shaft (32). The connecting shaft (32) is symmetrically installed on both sides of the bottom flip cover (31) and is fixedly connected to the bottom flip cover (31). The inner side of the side plate (12) is provided with positioning holes for the connecting shaft (32) to be installed.

6. A protective cover for a frequency converter according to claim 5, characterized in that: The upper surface of the bottom flap (31) is provided with a vertical groove (311) and a side groove (312) for installing the sealing seat (4), and a sealing crossbar (313) is also fixedly installed on the inner side of the bottom flap (31).

7. A protective cover for a frequency converter according to claim 6, characterized in that: The sealing seat (4) includes a U-shaped rubber seat (41) and a side wing strip (42) that cooperates with the side groove (312). The side wing strip (42) is symmetrically installed on both sides of the U-shaped rubber seat (41), and the side wing strip (42) and the U-shaped rubber seat (41) are integrally formed.

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