Upper cover structure of frequency converter

Abstract

The utility model relates to the technical field of frequency converters, and discloses an upper cover structure of a frequency converter. The upper cover is composed of a middle shell, a left cover shell and a right cover shell, and the middle shell is connected with a first hook, a second hook and a mounting hole in a fixed end of the left cover shell and a third hook and a plug pin of the right cover shell in a matched mode through a connecting part, an interval long groove, a hook groove, a connecting column and a screw hole. Crisscrossed reinforcing ribs are arranged on the bottom surface of the middle shell; the hook I, the hook II and the hook III are formed by a plurality of thin plates and are connected through hook parts. The structure has the advantages that convenient assembly is achieved, three components can be fixed only through one bolt, the installation process is simplified, and the production efficiency is improved; use of bolts is reduced, and raw material and labor cost is reduced; the bolt is hidden, so that the appearance attractiveness and safety are improved; and the split design is adopted, so that later maintenance is facilitated, the maintenance cost is reduced, and the equipment maintainability is improved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency converter cover structure. Background Technology

[0002] In the current field of frequency converter equipment, its housing structure plays a crucial role in the protection of the equipment, the installation of internal components, and the overall aesthetics. Traditional frequency converter cover structures, such as the common form consisting of a bottom shell and a top cover directly fitted onto the bottom shell, have revealed many problems in practical applications.

[0003] Most existing structures consist of multiple components, and the connections between these components typically rely on a large number of bolts for fixing. This connection method not only makes the installation process cumbersome and consumes a lot of manpower and time, but also detracts from the overall aesthetics of the equipment. Furthermore, in some applications where appearance is a critical factor, exposed bolts may pose safety hazards, such as easily snagging on foreign objects, causing equipment damage or personal injury.

[0004] As market demands for inverter equipment in terms of structural optimization, cost control, and aesthetics increase, developing an inverter cover structure that is simple in structure, easy to assemble and disassemble, low in cost, and effectively conceals bolts has become an urgent problem to be solved. This invention is based on this background, aiming to overcome the shortcomings of existing technologies and provide a completely new inverter cover structure. Utility Model Content

[0005] In view of the shortcomings in the prior art, this utility model provides a frequency converter cover structure.

[0006] The technical solution adopted by this utility model is: a frequency converter top cover structure, including a bottom shell and a top cover covering the bottom shell, wherein the top cover includes a middle shell, a left cover shell and a right cover shell;

[0007] A connecting part is provided on the inner side of the upper edge of the left end of the middle shell, and multiple rows of spaced long grooves are provided on the front and rear sides of the middle shell. A hook groove is provided on the upper wall of the right end of the middle shell, and a connecting post is provided on the inner side of the middle part of the middle shell. A screw hole is provided in the connecting post.

[0008] The left end of the left cover is provided with a hook 1 that connects to the connecting part, and the right end of the left cover is provided with hook 2 that connects to the spaced long grooves on both sides. The right end of the left cover extends with fixed ends on both sides, one of which is provided with a mounting hole corresponding to the screw hole, and the right end face of the left cover is provided with multiple pin slots.

[0009] The left end of the right cover is provided with a plug pin that can be inserted into the aforementioned plug slot, and the front and rear side walls of the right cover are provided with hooks that connect to the aforementioned hook slots.

[0010] Furthermore, the bottom surface of the inner shell is provided with several crisscrossing reinforcing ribs.

[0011] Furthermore, the hook is composed of multiple thin plates integrally formed on the inner wall of the left shell, and each thin plate has a hook at the bottom that connects with the connecting part.

[0012] Furthermore, both hook two and hook three are composed of multiple thin plates, and each thin plate has a hook part two at its bottom that can connect with the spaced long groove and the hook groove, the hook part two connecting multiple thin plates into one.

[0013] Furthermore, the right cover has a slot for setting the hook three, and the outer side of the multiple thin plates of the hook three is provided with a connecting plate to connect the multiple thin plates, and the connecting plate is provided with multiple transverse grooves.

[0014] Furthermore, a lower surrounding plate is provided on the outer side of the fixed end, and upper surrounding plates that mate with the lower surrounding plate are provided on both sides of the left end of the right cover.

[0015] Furthermore, a baffle is provided on the middle shell on the left side of the pin slot, and an elastic rubber block is provided on the baffle. After the pin is inserted into the pin slot, it can be pressed tightly onto the elastic rubber block.

[0016] The beneficial effects of this utility model are:

[0017] Firstly, regarding ease of connection and stability, unlike traditional cover structures that require numerous bolts, this patented cover consists of a middle shell, a left cover shell, and a right cover shell, requiring only one bolt to securely fix all three. Through cleverly designed connecting parts, hooks, and inserts, the installation process is greatly simplified, installation time is significantly shortened, and production assembly efficiency is improved.

[0018] Secondly, from a cost perspective, on the one hand, the reduced number of bolts and other connectors directly lowers the cost of raw material procurement; on the other hand, the simplified installation process means a significant reduction in labor costs. Whether in the production and assembly stage or in the later maintenance and replacement of parts, a large amount of manpower can be saved, thereby reducing the overall production cost.

[0019] Furthermore, in terms of aesthetics and safety, the use of only one bolt, which can be effectively concealed, makes the inverter's appearance more concise and streamlined, avoiding the damage to the overall aesthetics caused by numerous exposed bolts, and meeting the needs of various application scenarios with high requirements for equipment appearance.

[0020] Finally, the top cover structure of this patent adopts a split design, with each component being relatively independent. When a component is damaged, only the damaged component needs to be replaced, unlike an integrated top cover which requires the entire unit to be replaced. This further reduces maintenance costs and improves the maintainability of the equipment.

[0021] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the explosion of the top cover.

[0024] Figure 3 This is a schematic diagram of the right cover shell.

[0025] Figure 4 This is a schematic diagram of the left cover.

[0026] Figure 5 This is a schematic diagram of the left cover shell from another perspective.

[0027] Figure 6 This is a schematic diagram of the middle shell structure.

[0028] Figure 7 This is a schematic diagram of the middle shell from another perspective.

[0029] Figure 1-7 Components: 1. Bottom shell; 2. Top cover; 3. Middle shell; 4. Left cover; 5. Right cover; 6. Connecting part; 7. Spacing groove; 8. Hook groove; 9. Connecting post; 10. Screw hole; 11. Hook one; 12. Hook two; 13. Fixed end; 14. Mounting hole; 15. Pin groove; 16. Pin; 17. Hook three; 18. Reinforcing rib; 19. Hook one; 20. Hook two; 21. Groove; 22. Connecting plate; 23. Horizontal groove; 24. Lower surround plate; 25. Upper surround plate; 26. Baffle; 27. Elastic rubber block. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] This utility model provides a structure for the top cover of a frequency converter.

[0033] In this embodiment, refer to Figure 1-7 The inverter cover structure includes a bottom shell 1 and an upper cover 2 that covers the bottom shell 1. The upper cover includes a middle shell 3, a left cover 4 and a right cover 5.

[0034] A connecting part 6 is provided on the inner side of the upper edge of the left end of the middle shell. Multiple rows of spaced long grooves 7 are provided on the front and rear sides of the middle shell 3. A hook groove 8 is provided on the upper wall of the right end of the middle shell. A connecting post 9 is provided on the inner side of the middle part of the middle shell. A screw hole 10 is provided in the connecting post.

[0035] The left end of the left cover is provided with a hook 11 that connects to the connecting part, and the right end of the left cover is provided with hooks 12 that connect to the spaced long grooves on both sides. The right end of the left cover extends with fixed ends 13 on both sides. One of the fixed ends is provided with a mounting hole 14 corresponding to the screw hole, and the right end face of the left cover is provided with multiple pin slots 15.

[0036] The left end of the right cover is provided with a plug pin 16 that can be inserted into the aforementioned plug slot, and the front and rear side walls of the right cover are provided with hooks 17 that connect to the aforementioned hook slots.

[0037] In the above technical solution, the inverter top cover adopts a split design, consisting of a middle housing, a left cover, and a right cover. The middle housing is connected to the left cover's hook one, hook two, and mounting holes on the fixed end, as well as the right cover's hook three and plug-in pin, through specific connecting parts, spaced long slots, hook slots, connecting posts, and screw holes. The ingenious connection method between the components forms a stable overall structure, enabling convenient assembly of the top cover. Only one bolt is needed to fix the three components, greatly simplifying the installation process and improving production efficiency. At the same time, the split design facilitates later maintenance; when a component is damaged, it can be replaced individually, reducing maintenance costs. In addition, this connection method allows the bolts to be hidden under the right cover, improving the product's aesthetic appearance.

[0038] The multiple spaced long slots can be used for heat dissipation and can be directly connected to hook two, eliminating the need for a separate connection slot for connecting to hook two, thus simplifying the structure and reducing processing costs.

[0039] The specific assembly principle of the top cover in this application is as follows:

[0040] 1. Initial connection between the left cover and the middle shell: Align the hook on the left end of the left cover with the connecting part on the inner side of the upper edge of the left end of the middle shell to achieve the initial positioning of the left cover and the middle shell.

[0041] 2. Adjust and fix the position of the left cover: Press down the hooks on both sides of the right end of the left cover to correspond with the spaced long grooves on the front and rear sides of the middle cover, so that the hooks at the bottom of the hooks are tightly connected to the spaced long grooves. At this time, the horizontal position of the left cover is determined. Then, align the side with the mounting hole of the fixed end extending from both sides of the right end of the left cover with the connecting post on the inner side of the middle of the middle cover. Screw the bolt through the mounting hole into the screw hole in the connecting post to firmly fix the left cover and the middle cover. 3. Connect the right cover with the left cover and the middle cover: Align the plug pin on the left end of the right cover with the plug pin groove on the right end face of the left cover and insert it to achieve the initial connection between the right cover and the left cover. Next, align the hooks on the front and rear side walls of the right cover with the hook grooves on the upper right wall of the middle cover. Snap the hooks at the bottom of the hooks into the hook grooves to complete the connection between the right cover and the middle cover. At this point, the three parts of the upper cover are assembled and form a stable whole.

[0042] Specifically, the bottom surface of the inner shell is provided with several crisscrossing reinforcing ribs 18.

[0043] In this embodiment, crisscrossing reinforcing ribs are provided on the bottom surface of the middle shell. These reinforcing ribs increase the structural strength of the middle shell, enabling it to evenly distribute the pressure when subjected to external pressure and reduce the situation of excessive local stress.

[0044] Specifically, the hook is composed of multiple thin plates integrally formed on the inner wall of the left shell, and each thin plate has a hook 19 at the bottom that connects with the connecting part.

[0045] In this embodiment, the hook is composed of multiple thin plates integrally formed on the inner wall of the left shell, and the hook portion at the bottom of each thin plate is used to connect with the connecting part of the middle shell. This design of multiple thin plates increases the flexibility and adaptability of the hook, enabling it to better fit with the connecting part.

[0046] Specifically, both hook two and hook three are composed of multiple thin plates, and each thin plate has a hook part 20 at the bottom that can connect with the spaced long groove and the hook groove, and the hook part 2 connects the multiple thin plates into one piece.

[0047] In this embodiment, both hook two and hook three are composed of multiple thin plates. Hook two at the bottom of the thin plates connects the multiple thin plates into one piece, and hook two is connected to the spaced-out long groove and hook groove respectively. This structural design ensures that when the hook is connected to the corresponding groove, it can not only ensure the tightness of the connection, but also enhance the overall strength of the hook through multiple thin plates.

[0048] Specifically, the right cover has a slot 21 for setting the hook three, and the outer side of the multiple thin plates of the hook three is provided with a connecting plate 22 for connecting the multiple thin plates, and the connecting plate is provided with multiple horizontal grooves 23.

[0049] In this embodiment, the slot on the right cover is used to install hook three. The connecting plate on the outside of hook three connects multiple thin plates, and the transverse groove on the connecting plate further enhances the structural strength of hook three. Through this design, hook three can better withstand forces from all directions.

[0050] Specifically, a lower surrounding plate 24 is provided on the outer side of the fixed end, and upper surrounding plates 25 are provided on both sides of the left end of the right cover to mate with the lower surrounding plate.

[0051] In this embodiment, the lower surrounding plate on the outside of the fixed end is mated with the upper surrounding plates on both sides of the left end of the right cover. This mating structure not only makes the connection more flat and beautiful in appearance, but also prevents dust, debris and other objects from entering the connection part to a certain extent.

[0052] Specifically, a baffle 26 is provided on the middle shell on the left side of the pin slot, and an elastic rubber block is provided on the baffle. After the pin is inserted into the pin slot, it can be pressed against the elastic rubber block 27.

[0053] In this embodiment, the baffle on the left side of the middle housing and the elastic rubber block on the baffle will press the elastic rubber block tightly when the plug pin of the right cover is inserted into the plug slot. The elasticity of the elastic rubber block can buffer and further fix the plug pin, improving the connection stability between the left and right cover shells.

[0054] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A frequency converter cover structure, comprising a bottom shell and a top cover fitted onto the bottom shell, characterized in that: The upper cover includes a middle shell, a left cover shell, and a right cover shell; A connecting part is provided on the inner side of the upper edge of the left end of the middle shell, and multiple rows of spaced long grooves are provided on the front and rear sides of the middle shell. A hook groove is provided on the upper wall of the right end of the middle shell, and a connecting post is provided on the inner side of the middle part of the middle shell. A screw hole is provided in the connecting post. The left end of the left cover is provided with a hook 1 that connects to the connecting part, and the right end of the left cover is provided with hook 2 that connects to the spaced long grooves on both sides. The right end of the left cover extends with fixed ends on both sides, one of which is provided with a mounting hole corresponding to the screw hole, and the right end face of the left cover is provided with multiple pin slots. The left end of the right cover is provided with a plug pin that can be inserted into the aforementioned plug slot, and the front and rear side walls of the right cover are provided with hooks that connect to the aforementioned hook slots.

2. The inverter cover structure according to claim 1, characterized in that: The bottom surface of the inner shell is provided with several crisscrossing reinforcing ribs.

3. The inverter cover structure according to claim 1, characterized in that: The hook is composed of multiple thin plates integrally formed on the inner wall of the left shell, and each thin plate has a hook at the bottom that connects with the connecting part.

4. The inverter cover structure according to claim 1, characterized in that: Both hook two and hook three are composed of multiple thin plates, and each thin plate has a hook part two at the bottom that can connect with the spaced long groove and the hook groove, and the hook part two connects the multiple thin plates into one.

5. The inverter cover structure according to claim 4, characterized in that: It also includes a connecting plate. The right cover has a slot for setting the hook three, and the outer side of the multiple thin plates of the hook three is provided with a connecting plate to connect the multiple thin plates. The connecting plate is provided with multiple transverse grooves.

6. The inverter cover structure according to claim 1, characterized in that: A lower surrounding plate is provided on the outer side of the fixed end, and upper surrounding plates that mate with the lower surrounding plate are provided on both sides of the left end of the right cover.

7. The inverter cover structure according to claim 1, characterized in that: A baffle is provided on the middle shell on the left side of the pin slot, and an elastic rubber block is provided on the baffle. After the pin is inserted into the pin slot, it can be pressed against the elastic rubber block.

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