Wire outlet structure for fan electric appliance box cover

Abstract

The utility model relates to the field of wire outlet structures of electric appliance box covers, in particular to a wire outlet structure for a fan electric appliance box cover. Comprising an electric appliance box cover body, an annular wire outlet hole is formed in the electric appliance box cover body, a cable is led out of the wire outlet hole, an annular groove is formed in the wire outlet hole, a rubber sealing ring is embedded in the annular groove, a wire outlet hole cover is arranged on the wire outlet hole, and an oval groove is formed in the electric appliance box cover body. A fixing clamping plate is arranged on the electric appliance box cover body, the fixing clamping plate and the electric appliance box cover body are screwed and fixed, and a cable is arranged between a cable outlet portion of the fixing clamping plate and the oval groove. Through a triple sealing system of the rubber sealing ring, the wire outlet hole cover and the pouring sealant, dust, water vapor and other impurities can be more powerfully prevented from invading the interior of the electric appliance box, the protection grade of the electric appliance box is greatly improved, a more excellent and stable working environment is created for electric appliance elements, the service life of a fan is remarkably prolonged, and the service life of the fan is prolonged. And the equipment maintenance cost is further reduced.

Description

A cable outlet structure for a fan electrical box cover Technical Field

[0001] This utility model relates to the field of wiring structure for electrical box covers, and more particularly to a wiring structure for a fan electrical box cover. Background Technology

[0002] In many areas of modern industrial production and daily life, fans, as crucial ventilation and energy conversion devices, are widely used. With the rapid development of technology and continuous social progress, the application scenarios of fans are becoming increasingly complex and diverse. In actual operation, if a fan malfunctions, it is highly likely that the equipment will be damaged due to overheating, thus affecting the smooth operation of the entire production process. In this process, the wiring outlet of the electrical box cover is always a key factor affecting the performance and stability of the equipment. However, the currently common wiring methods have many drawbacks:

[0003] 1. The sealing mechanism between the outlet hole and the cable has an inherent defect, allowing dust, moisture, and other impurities to easily penetrate the electrical box. This intrusion severely interferes with the normal operation of electrical components, leading not only to short circuits and corrosion, but also significantly shortening the fan's lifespan and reliability, increasing equipment maintenance costs and downtime risks.

[0004] 2. Traditional wind turbine electrical box cover cable outlet structure often requires operators to perform complex operations in a confined space when installing cables, such as aligning the cable outlet hole, fixing the cable, and installing sealing components. The operation process is cumbersome and consumes a lot of time and labor costs.

[0005] 3. During wind turbine operation, due to equipment vibration, cable weight, and potential external tensile forces, the cables are prone to significant stress at the outlet, making them highly susceptible to damage from external pulling, leading to frequent wind turbine failures. These problems severely hinder the improvement of wind turbine performance and the expansion of application scenarios, making the development of new cable outlet structures an urgent priority.

[0006] Therefore, it is particularly important to design a cable outlet structure for the fan electrical box cover that provides good sealing at the outlet, is easy to install and maintain, can improve the protection performance of the fan electrical box, simplify the cable installation and maintenance process, and significantly enhance the reliability and durability of the cables. Summary of the Invention

[0007] This application provides a wiring structure for a fan electrical box cover, employing the following technical solution:

[0008] A cable outlet structure for a fan electrical box cover includes an electrical box cover body, an annular cable outlet hole on the electrical box cover body for cable outlet, an annular groove on the cable outlet hole, a rubber sealing ring embedded in the annular groove, a cable outlet hole cover on the cable outlet hole, and an elliptical groove on the electrical box cover body; a fixing clamp on the electrical box cover body, the fixing clamp being tightened and fixed to the electrical box cover body, and the cable being disposed between the cable outlet portion of the fixing clamp and the elliptical groove.

[0009] Optionally, the cable outlet is a semi-circular groove, and the position of the cable outlet corresponds to the elliptical groove.

[0010] Optionally, the fixing plate is provided with several bolt holes, and corresponding bolt holes are provided on the main body of the electrical box cover.

[0011] Optionally, two elliptical grooves are provided.

[0012] Optionally, a potting hole is provided on the fixing clamp, and the potting compound is slowly and evenly injected into the potting hole by an external potting device.

[0013] Optionally, the main body of the electrical box cover and the fixing plate are integrally injection molded.

[0014] Optionally, the rubber sealing ring is formed using a compression molding process.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. Sealing Performance: A triple-sealing system consisting of a rubber sealing ring, a cable outlet cover, and potting compound, combined with an elliptical groove design on the edge of the cable outlet precisely matching the cable's outer diameter, creates an extremely efficient and robust protective barrier. The tight fit of the rubber sealing ring, the reinforced blocking effect of the cable outlet cover, the filling of tiny gaps and voids by the potting compound, and the tight fit created by the elliptical groove effectively prevent dust, moisture, and other impurities from entering the electrical box. This significantly improves the box's protection level, creating a superior and stable working environment for electrical components, substantially extending the fan's lifespan, and further reducing equipment maintenance costs.

[0017] 2. Convenient Installation and Maintenance: The ingenious design of the cable outlet cover keeps the cable outlet closed when not in use, reducing dust accumulation and lowering maintenance frequency. When installing cables, simply open the cable outlet cover, thread the cable through, and quickly install the sealing and fixing components according to standardized operating procedures. Finally, inject potting compound through the potting hole. The operation is simple and smooth, greatly improving installation efficiency. When maintaining cables, the fixing components and cable outlet cover can be easily removed, and the sealing plug of the potting hole can be opened to check the internal sealing condition. If aging of the rubber sealing ring, sealant, or potting compound is found, local re-potting or replacement of the entire sealing component can be performed through the potting hole, reducing maintenance time and labor costs. The matching design of the electrical box body and the edge of the cable outlet of the cover facilitates accurate alignment and installation of related components during installation and maintenance, further enhancing operational convenience.

[0018] 3. Reliable cable protection: The fixing plates of the cable fixing assembly are symmetrically arranged, and the inner cable outlet is adapted to the cable. The electrical box cover body is connected by bolts to clamp the cable and prevent displacement damage, which greatly improves the reliability and service life of the cable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0020] Figure 1 is an overall structural diagram of this utility model.

[0021] Figure 2 is a schematic diagram of the main body of the electrical box cover of this utility model.

[0022] Figure 3 is a structural diagram of the cable outlet cover of this utility model.

[0023] Figure 4 is a structural diagram of the fixing clamp of this utility model.

[0024] Figure 5 is a schematic diagram of the back structure of the fixing clamp of this utility model.

[0025] In the diagram: 1. Main body of the electrical box cover; 101. Annular groove; 102. Elliptical groove; 103. Cable outlet cover; 2. Fixing clamp; 201. Cable outlet; 202. Glue filling hole; 203. Bolt hole. Detailed Implementation

[0026] The technical solutions of various 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 embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] An embodiment of this utility model provides a wiring structure for a fan electrical box cover.

[0030] Example: A cable outlet structure for a fan electrical box cover includes an electrical box cover body 1, an annular cable outlet hole on the electrical box cover body 1 for cable outlet, an annular groove 101 on the cable outlet hole, a rubber sealing ring embedded in the annular groove, and a cable outlet hole cover 103 on the cable outlet hole. Two elliptical grooves 102 are provided on the electrical box cover body 1, and the elliptical grooves 102 can hold cables.

[0031] A fixing plate 2 is provided on the main body 1 of the electrical box cover. The fixing plate 2 is fixedly tightened to the main body 1 of the electrical box cover. A cable outlet part 201 is provided on the fixing plate 2. The cable outlet part 201 is a semi-circular groove. The position of the cable outlet part 201 corresponds to the elliptical groove 102. The cable outlet part 201 and the elliptical groove 102 form a cable outlet component. At the same time, a number of bolt holes 203 are provided on the fixing plate 2. Corresponding bolt holes are provided on the main body 1 of the electrical box cover. The fixing plate 2 and the main body 1 of the electrical box cover are fixedly tightened by the cooperation of the bolts and the bolt holes 203.

[0032] A potting hole 202 is provided on the fixed clamp 2. The potting compound is slowly and evenly injected into the potting hole 202 through an external potting device. During the potting process, the potting condition inside is observed with the assistance of an endoscope to ensure that the potting compound fully fills the gap between the cable outlet and the cable, as well as the surrounding small gaps. After the potting is completed, the potting compound is allowed to cure according to the specified curing time and temperature conditions.

[0033] Working Principle: During installation, carefully insert the rubber sealing ring into the annular groove 101 on the edge of the cable outlet hole of the electrical box cover body 1, and open the cable outlet cover 2. Use the external guide device to pass the cable through the cable outlet hole, adjust the cable position so that it is centered in the cable outlet hole, and ensure that the cable passes smoothly through the elliptical groove 102 on the edge of the cable outlet hole of the electrical box cover body 1, ensuring that the two are compatible. Assemble the fixing plate 2 with the electrical box cover body 1 according to the set pattern, align the cable outlet part 201 on the fixing plate 2 with the elliptical groove 102, and ensure a tight fit. At this time, the cable accurately falls into the cable outlet part 201 on the inner side of the fixing plate 2. Then use bolts to tightly connect the fixing plate 2 to the electrical box cover body 1. During the bolt tightening process, pay attention to the tight fit between the groove and the cable to avoid damaging the cable. After tightening, use a potting device to slowly and evenly inject epoxy resin potting compound into the potting hole 202. During the potting process, closely observe the cable exit hole to ensure that the potting compound fully fills the gap between the exit hole and the cable, as well as any surrounding small voids. This can be aided by using a transparent viewing window or endoscope to observe the potting process. After potting is complete, allow the potting compound to cure according to the specified curing time and temperature conditions.

[0034] When cable maintenance is required, first use appropriate tools to unscrew the bolts on the fixing clamp 2 and carefully remove the fixing clamp 2 from the electrical box cover body 1. During disassembly, take care to protect the electrical box cover and bolts to avoid damage. Open the cable outlet cover 103 and carefully observe the sealing condition of the rubber sealing ring, cable outlet cover 103, and potting compound. If the rubber sealing ring is found to be aged or the cable outlet cover 103 and potting compound are ineffective, local re-potting can be performed through the potting hole 202. If the sealing problem is severe, the entire sealing assembly needs to be replaced, following the installation procedure. During inspection, also pay attention to the wear condition of the elliptical groove 102 on the edge of the cable outlet of the electrical box body 1 and the cover; repair or replace relevant parts if necessary. Check the wear condition of the fixing clamp 2 and bolts, and replace them if necessary. After completing the cable maintenance, reinstall the components in reverse order of the installation process to ensure accurate installation and good sealing of all parts.

[0035] The electrical box cover of this device is made of materials with corresponding chemical corrosion resistance, high temperature resistance, and low temperature resistance, taking into account environmental factors. For example, high-strength engineering plastics such as polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS) alloy material (PC / ABS) are selected. PC / ABS alloy material combines the high toughness and heat resistance of PC with the good processing performance and surface gloss of ABS. Its high strength characteristics can withstand the mechanical vibration during the operation of the fan and possible external impacts, effectively protecting the internal electrical components; good insulation performance ensures the safety of the internal circuit of the electrical box; at the same time, PC / ABS material has good weather resistance, can adapt to long-term use under different environmental conditions, and is not easily aged or deformed by factors such as ultraviolet radiation and temperature changes, ensuring the long-term reliability of the electrical box cover.

[0036] The electrical box cover of this device is manufactured using injection molding. Based on the designed main mold for the electrical box cover, PC / ABS alloy material granules are added to the injection molding machine barrel. The injection molding machine melts the material through heating and injects the molten material into the mold cavity under a certain pressure. After holding pressure and cooling, the mold is opened, and the formed electrical box cover body is removed. During the injection molding process, parameters such as injection temperature, pressure, and time need to be strictly controlled to ensure the dimensional accuracy and surface quality of the electrical box cover body. After injection molding, the electrical box cover body undergoes deburring, grinding, and other post-processing steps to remove surface defects and excess plastic scraps.

[0037] The rubber sealing rings used are formed using a compression molding process. Silicone rubber raw materials are mixed evenly with vulcanizing agents and other additives, and then placed into a rubber sealing ring mold. Under specific temperature and pressure conditions, the silicone rubber undergoes a vulcanization reaction, molding into the desired shape of the rubber sealing ring. During the compression molding process, temperature, pressure, and vulcanization time must be precisely controlled to ensure the physical properties and dimensional accuracy of the rubber sealing ring. The molded rubber sealing rings undergo quality inspections, such as visual inspection, dimensional measurement, hardness testing, and sealing performance testing, and can only be used after passing these tests.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and not restrictive in all respects. The scope of this invention is defined by the appended claims, not by the foregoing description, and is therefore intended to encompass all variations falling within the meaning and scope of equivalents of the claims. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable outlet structure for a fan electrical box cover, characterized in that: The device includes an electrical box cover body, an annular cable outlet hole, a rubber sealing ring embedded in the annular groove, a cable outlet hole cover, and an elliptical groove on the electrical box cover body. A fixing plate is also provided on the electrical box cover body, and the fixing plate is tightened to the electrical box cover body. The cable is positioned between the cable outlet portion of the fixing plate and the elliptical groove.

2. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: The cable exit section is a semi-circular groove, and the position of the cable exit section corresponds to the elliptical groove.

3. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: The fixing plate has several bolt holes, and the electrical box cover body has corresponding bolt holes.

4. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: There are two elliptical grooves.

5. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: A potting hole is provided on the fixed clamp, and the potting compound is slowly and evenly injected into the potting hole through an external potting device.

6. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: The main body of the electrical box cover and the fixing plate are made by injection molding.

7. The cable outlet structure for a fan electrical box cover according to claim 1, characterized in that: The rubber sealing ring is formed using a compression molding process.

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