A frequency converter control cabinet with a dustproof and waterproof structure

Abstract

This utility model relates to a frequency converter control cabinet with a dustproof and waterproof structure, belonging to the technical field of control cabinets. The frequency converter control cabinet with a dustproof and waterproof structure includes: a cabinet body and a protective sealing mechanism. A wire frame is fixedly connected to the top of the cabinet body by bolts, and the top of the wire frame has a mounting hole. The protective sealing mechanism includes a mounting frame inserted into the mounting hole, a threaded sleeve fixedly connected to the inner side of the mounting frame, and a locking nut that contacts the wire frame is threadedly connected to the outer side of the threaded sleeve. Through the controllable radial contraction of the hourglass-shaped sealing ring under the pressure of the threaded tube, it adaptively wraps around wire harnesses of different outer diameters, providing excellent dustproof and waterproof sealing. At the same time, the fluororubber material ensures weather resistance and durability, effectively solving the technical problems of traditional sealing plugs having stringent requirements on cable outer diameter dimensions and being prone to sealing failure due to minor deviations.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, and in particular to a frequency converter control cabinet with a dustproof and waterproof structure. Background Technology

[0002] The inverter control cabinet with a dustproof and waterproof structure achieves a high level of protection through components such as compression-sealed wire harness plugs. This component utilizes a mechanical compression principle to provide excellent dustproof and waterproof sealing performance while integrating cable clamping functionality, effectively improving operational reliability in harsh environments.

[0003] However, the most significant limitation of this sealing plug lies in its stringent requirements for the outer diameter of the cable. Even a slight deviation can lead to seal failure, thus posing a potential risk to installation and application. Utility Model Content

[0004] Therefore, it is necessary to address the issue that the compression-sealed wire harness sealing plugs in inverter control cabinets have stringent requirements on the outer diameter of the cables and a narrow range of applications, and to provide an inverter control cabinet with a dustproof and waterproof structure.

[0005] A frequency converter control cabinet with a dustproof and waterproof structure includes: a cabinet body and a protective sealing mechanism. A wire frame is fixedly connected to the top of the cabinet body by bolts, and the top of the wire frame is provided with mounting holes.

[0006] In one embodiment, the protective sealing mechanism includes a mounting frame inserted into the inner side of the mounting hole, a threaded sleeve fixedly connected to the inner side of the mounting frame, a locking nut that contacts the wire frame being threadedly connected to the outer side of the threaded sleeve, a bearing ring fixedly connected to the inner side of the threaded sleeve, a sealing ring fixedly connected to the top of the bearing ring, the sealing ring being hourglass-shaped and made of fluororubber material, and a threaded tube that contacts the sealing ring being threadedly connected to the inner side of the threaded sleeve.

[0007] In one embodiment, the local horizontal cross-sectional shape of the contact area between the mounting hole and the mounting frame is a matching rectangle, and the vertical cross-sectional shape of the mounting frame is an inverted convex shape.

[0008] In one embodiment, the maximum diameter of the mounting frame positioned above the mounting hole is greater than the inner diameter of the mounting hole, and the maximum diameter of the top of the locking nut is greater than the inner diameter of the mounting hole.

[0009] In one embodiment, a guide ring is fixedly connected to the top of the sealing ring, and the bottom of the threaded tube contacts the guide ring.

[0010] In one embodiment, a protective ring is fixedly connected to the outer side of the threaded tube, and the protective ring is slidably connected to the outer side of the threaded tube.

[0011] In one embodiment, the horizontal cross-sectional shape of the outer side of the protective ring is a regular hexagon.

[0012] In one embodiment, a flexible protective ring is fitted around the outside of the threaded tube, and the two ends of the flexible protective ring are in contact with the wire frame and the protective ring sleeve, respectively.

[0013] In one embodiment, the flexible protective ring has a cavity inside, and the flexible protective ring is a fluororubber material component.

[0014] Beneficial effects 1. The frequency converter control cabinet with the above-mentioned dustproof and waterproof structure uses an hourglass-shaped sealing ring to controllably shrink radially under the pressure of the threaded tube, adaptively wrapping wire harnesses of different outer diameters, providing excellent dustproof and waterproof sealing. At the same time, the fluororubber material ensures weather resistance and durability, effectively solving the technical problems of traditional sealing plugs having strict requirements on the outer diameter of the cable and being prone to sealing failure due to slight deviations.

[0015] 2. Through the flexible protective ring and its cavity design, a second flexible sealing barrier is formed between the conductor frame and the protective ring sleeve. It can absorb vibration and compensate for deformation, maintain sealing stability, further prevent dust and liquid intrusion, and improve the long-term operational reliability and protection effect of the frequency converter control cabinet in harsh environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the wire frame and the protective sealing mechanism in the assembled state of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram showing the arrangement of the protective sealing mechanism and mounting holes in this utility model; Figure 5 This is an exploded view of the protective sealing mechanism in this utility model.

[0018] Figure label: 100. Cabinet; 200. Wire frame; 210. Mounting hole; 300. Protective sealing mechanism; 310. Mounting frame; 320. Threaded sleeve; 330. Locking nut; 340. Bearing ring; 350. Sealing ring; 360. Threaded tube; 370. Guide ring; 380. Protective ring sleeve; 390. Flexible protective ring; 391. Cavity. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The following is combined with Figure 1 - Figure 5 This invention describes a frequency converter control cabinet with a dustproof and waterproof structure.

[0021] In one embodiment, a frequency converter control cabinet with a dustproof and waterproof structure includes: a cabinet body 100 and a protective sealing mechanism 300. A wire frame 200 is fixedly connected to the top of the cabinet body 100 by bolts, and the top of the wire frame 200 is provided with a mounting hole 210.

[0022] Cabinet 100, as the core structure that carries internal components such as frequency converters, adopts a robust rectangular cabinet form. Its interior is equipped with a mounting base plate and guide rails for fixing electrical components, and the cabinet door is surrounded by sealing strips to enhance basic protection.

[0023] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the protective sealing mechanism 300 includes a mounting frame 310 inserted into the mounting hole 210. A threaded sleeve 320 is fixedly connected to the inner side of the mounting frame 310. The threaded sleeve 320, as the core connecting and bearing component, connects the mounting frame 310, the bearing ring 340, and the locking nut 330 into a whole. It is the core component for bearing and transmitting the forces of each part. At the same time, its inner thread cooperates with the threaded tube 360 ​​to convert the rotational motion into linear motion, which is the key driving basis for realizing the sealing function. The outer threaded connection of the screw sleeve 320 is a locking nut 330 that contacts the wire frame 200. The locking nut 330 engages with the threaded outer thread of the screw sleeve 320 and clamps the wire frame 200 with the mounting frame 310 from top to bottom, achieving quick and secure installation of the entire mechanism, facilitating disassembly and maintenance. The inner side of the screw sleeve 320 is fixedly connected to a bearing ring 340, which provides a stable and reliable mounting platform for the sealing ring 350, ensuring uniform stress and controllable deformation of the seal. The top of the bearing ring 340 is fixedly connected to a sealing ring. The sealing ring 350 is hourglass-shaped, a shape that is its core advantage. When pressed down, it undergoes controllable radial contraction deformation, tightly wrapping around wire harnesses of different outer diameters. This achieves wide adaptability to wire diameters, overcoming the limitations of traditional fixed-diameter sealing plugs. Simultaneously, while achieving a seal, the clamping force generated on the wire harness after contraction also acts as a cable clamp, preventing accidental cable pull-out and improving reliability. The sealing ring 350 is made of fluororubber material, which possesses… It has excellent weather resistance, high temperature resistance and chemical stability, and can provide a high level of dustproof and waterproof seal for a long time. The inner thread of the threaded sleeve 320 is connected to a threaded tube 360 ​​that contacts the sealing ring 350. The threaded tube 360 ​​acts as an active adjustment component, which directly controls the pressure on the sealing ring 350 by screwing it in or out. It is the "switch" to start or stop the sealing state. At the same time, its hollow tube provides a passage for the wire harness to pass through. It is screwed to the highest position at the beginning of installation to leave ample space for wire threading and facilitate operation.

[0024] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the local horizontal cross-sectional shapes of the contact area between the mounting hole 210 and the mounting frame 310 are all matched rectangles, while the vertical cross-sectional shape of the mounting frame 310 is an inverted convex shape. This rectangular horizontal cross-section design effectively prevents the entire mechanism from rotating during installation and locking, ensuring accurate installation orientation and facilitating operation. The inverted convex vertical cross-section and the design of its maximum diameter being larger than the inner diameter of the mounting hole 210 allow it to lock onto the mounting hole 210 from above, cooperating with the locking nut 330 below to achieve initial and reliable mechanical fixation of the mechanism on the guide frame 200. The mounting frame 310 is positioned above the mounting hole 210 with a maximum vertical diameter of [missing information]. The diameter of the locking nut 330 is greater than the inner diameter of the mounting hole 210, and the maximum diameter of the top of the locking nut 330 is greater than the inner diameter of the mounting hole 210. This structure together achieves the initial and reliable mechanical fixation and limitation of the mechanism on the guide frame 200. The top of the sealing ring 350 is fixedly connected to the guide ring 370. The guide ring 370 acts as an intermediary between the threaded tube 360 ​​and the sealing ring 350. It can convert the concentrated force of the threaded tube 360 ​​downward into a more uniform circumferential pressure on the top of the sealing ring 350, guide it to shrink and deform evenly and symmetrically, avoid unilateral twisting, and extend the life of the seal. The bottom of the threaded tube 360 ​​is in contact with the guide ring 370.

[0025] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a protective ring 380 is fixedly connected to the outer side of the threaded tube 360. The protective ring 380 is slidably connected to the outer side of the threaded sleeve 320. The protective ring 380 effectively covers the mating threads between the threaded sleeve 320 and the threaded tube 360, preventing dust accumulation and moisture intrusion, protecting the threads and ensuring smooth long-term operation of the mechanism. The horizontal cross-sectional shape of the outer side of the protective ring 380 is a regular hexagon. This regular hexagonal shape facilitates tightening with standard wrenches and other tools, providing greater torque and making locking and sealing more effortless and reliable. The threaded tube 360... A flexible protective ring 390 is fitted on the outer side, covering the outside of the threaded tube 360. Its two ends contact the guide frame 200 and the protective ring sleeve 380 respectively, forming a second flexible sealing barrier for the upper part of the mechanism, further preventing the entry of dust and liquid. At the same time, the internal cavity 391 structure enhances its flexibility and elasticity, which can not only absorb vibration, but also compensate for the slight deformation of the mechanism due to temperature changes or stress, maintaining the stability of the seal. The two ends of the flexible protective ring 390 contact the guide frame 200 and the protective ring sleeve 380 respectively.

[0026] The flexible protective ring 390 has an internal cavity 391, which enhances the flexibility and elasticity of the flexible protective ring 390. It can not only absorb vibration, but also compensate for the slight deformation of the mechanism due to temperature changes or stress, and maintain the stability of the seal. The flexible protective ring 390 is a fluororubber component. The use of fluororubber ensures its durability and can provide a high level of dustproof and waterproof seal for a long time.

[0027] Working principle: When installing the protective sealing mechanism 300, first insert the mounting frame 310 into the mounting hole 210 and ensure it is properly inserted. Then, use the locking nut 330 to lock the threaded sleeve 320 and the rest of the structure onto the wire frame 200 to achieve initial fixation of the mechanism. Subsequently, rotate the threaded tube 360 ​​to its highest position so that the sealing ring 350 is not under pressure, thus reserving a spacious channel for the wire harness to pass through. The user can then extend the wire harness inside the cabinet 100 to the outside of the cabinet 100 in sequence through the threaded sleeve 320, the sealing ring 350, and the threaded tube 360. This design facilitates operation. After the wire harness is arranged... The user then rotates the threaded tube 360 ​​downwards. As the threaded tube 360 ​​spirals downwards, it presses the sealing ring 350 horizontally through the guide ring 370, causing the hourglass-shaped sealing ring 350 to shrink and deform, tightly wrapping the wire harness in the middle. This structure can adapt to wire harnesses with different outer diameters, overcoming the limitations of traditional sealing plugs that have strict requirements on cable outer diameter and are prone to sealing failure due to small deviations. After the threaded tube 360 ​​moves down into place, the mechanism provides dustproof and waterproof sealing performance for the wire harness and integrates cable clamping function, thereby improving the operational reliability and protection effect of the frequency converter control cabinet in harsh environments.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A frequency converter control cabinet with a dustproof and waterproof structure, characterized in that, include: The cabinet (100) has a wire frame (200) fixedly connected to its top by bolts, and the top of the wire frame (200) has a mounting hole (210). The protective sealing mechanism (300) includes a mounting frame (310) inserted into the inner side of the mounting hole (210). A threaded sleeve (320) is fixedly connected to the inner side of the mounting frame (310). A locking nut (330) that contacts the wire frame (200) is threadedly connected to the outer side of the threaded sleeve (320). A bearing ring (340) is fixedly connected to the inner side of the threaded sleeve (320). A sealing ring (350) is fixedly connected to the top of the bearing ring (340). The sealing ring (350) is hourglass-shaped and is made of fluororubber material. A threaded tube (360) that contacts the sealing ring (350) is threadedly connected to the inner side of the threaded sleeve (320).

2. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 1, characterized in that, The local horizontal cross-sectional shape of the contact area between the mounting hole (210) and the mounting frame (310) is a matching rectangle, and the vertical cross-sectional shape of the mounting frame (310) is an inverted convex shape.

3. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 1, characterized in that, The maximum diameter of the mounting frame (310) above the mounting hole (210) is greater than the inner diameter of the mounting hole (210), and the maximum diameter of the top of the locking nut (330) is greater than the inner diameter of the mounting hole (210).

4. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 1, characterized in that, The top of the sealing ring (350) is fixedly connected to a guide ring (370), and the bottom of the threaded tube (360) is in contact with the guide ring (370).

5. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 1, characterized in that, A protective ring (380) is fixedly connected to the outside of the threaded tube (360), and the protective ring (380) is slidably connected to the outside of the threaded sleeve (320).

6. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 5, characterized in that, The horizontal cross-sectional shape of the outer side of the protective ring (380) is a regular hexagon.

7. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 5, characterized in that, The outer side of the threaded tube (360) is fitted with a flexible protective ring (390), and the two ends of the flexible protective ring (390) are in contact with the wire frame (200) and the protective ring sleeve (380) respectively.

8. The frequency converter control cabinet with a dustproof and waterproof structure according to claim 7, characterized in that, The flexible protective ring (390) has a cavity (391) inside, and the flexible protective ring (390) is a fluororubber material component.

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