An electric fan cover

Abstract

The utility model discloses an electric fan cover, including front cover, rear cover, clamp device, the front cover includes two or two or more than front fan -shaped cover body piece, and the complete front cover is formed to the radial adjacent splicing between the front fan -shaped cover body piece, the detachable between the front fan -shaped cover body piece, and the radial split formation of front fan -shaped cover body piece in the front cover, the rear cover includes two or two or more than rear fan -shaped cover body piece, and the complete rear cover is formed to the radial adjacent splicing between the rear fan -shaped cover body piece, the detachable between the rear fan -shaped cover body piece, and the radial split formation of rear fan -shaped cover body piece in the rear cover, and the detachable fixed connection through clamp device between the front fan -shaped cover body piece and rear fan -shaped cover body piece, the electric fan cover of this product is stacked after splitting and packs, and the compression packing volume reduces the packing box size, and the energy -conserving packing material reduces the pollution to the environment, and the body strength of packing box is strengthened, and it is not so easy to be flattened, and the electric fan cover is more effectively protected from being crushed, and the packing box manufacturing cost can be saved.

Description

Technical Field

[0001] This utility model relates to electric fan components, and more particularly to an electric fan cover. Background Technology

[0002] 1. Chinese Patent Publication No.: CN220354075U discloses a silent industrial fan, including a base (1), a support rod (2) and a cover (3). The base (1) is placed on the ground. The two ends of the support rod (2) are connected to the base (1) and the cover (3). The cover (3) is provided with motor-driven fan blades. The fan blades include a hub (4) and several blades (5) connected to the hub (4). The hub (4) is connected to the output shaft of the motor. The blades (5) are evenly distributed circumferentially. The number of blades (5) is set to five or more. The blades (5) are all inclined and the angle between the blades (5) and the vertical plane is 10-30°. The speed of the motor is 500-1000 revolutions per minute. Several inclined connecting pieces (6) are arranged circumferentially on the hub (4). The blades (5) and the connecting pieces (6) correspond one-to-one and are riveted and fixed.

[0003] The aforementioned industrial fan housing (3) is integrally formed, with a large diameter and volume. The housing (3) is also hollow, requiring more space and area for storage during production and assembly, thus increasing storage costs. It also requires larger packaging boxes for shipping, resulting in smaller cargo capacity on container trucks and higher transportation costs. The packaging boxes are generally made of cardboard. Due to the large diameter and volume of the housing (3), the center of the packaging box needs to be softer. If heavy goods are stacked on top of the housing when loading the container truck, it is easy to deform the housing (3) and damage the cardboard box.

[0004] 2. Chinese Patent Publication No. CN106523408A discloses a large industrial fan with an integrated motor and fan blade, comprising: a fan support frame and a fan assembly. The fan assembly is mounted on the fan support frame and includes a fan cover, a central rotating device, and an automatic eccentric rotating device. The central rotating device is provided with a fan motor fixing flange and is welded to the inside of the fan cover through the fan motor fixing flange. The upper and lower ends of the fan cover are provided with rotary bearings, which are respectively an upper rotary bearing and a lower rotary bearing. An upper central shaft is installed in the upper rotary bearing, and an upper rotary bearing fastening plate is threaded to the end of the upper central shaft. A lower central shaft is installed in the lower rotary bearing, and a lower rotary bearing fastening plate is threaded to the end of the lower central shaft. The automatic eccentric rotating device is located at the lower end of the fan head. An electrical control box is also provided at the outer end of the fan cover, and the electrical control box is electrically connected to the central rotating device.

[0005] The fan guards of the aforementioned industrial fans are molded in one piece, and their large diameter requires a lot of space and area for storage during production and assembly, increasing storage costs. Larger packaging boxes are also needed for shipping, resulting in smaller cargo capacity on container trucks and higher transportation costs. Cardboard boxes are typically used for packaging, but due to the large diameter and volume of the fan guards, the center of the box needs to be softer. If heavy goods are stacked on top of the fan guards when loading container trucks, they can easily deform the fan guards and damage the cardboard boxes.

[0006] 3. Chinese Patent Publication No.: CN219993962U discloses an industrial fan with bidirectional rotation adjustment, including a bracket (10) and a fan assembly (20) disposed on the bracket (10). The fan assembly (20) includes at least an annular frame (210) and a fan cover (220). The left and right sides of the annular frame (210) are respectively provided with first rotating members (30), which are rotatably disposed on the bracket (10). The upper and lower sides of the annular frame (210) are respectively rotatably disposed with second rotating members (40), and the upper and lower sides of the fan cover (220) are respectively fixedly installed on the second rotating members (40).

[0007] The fan cover (220) of the aforementioned industrial fan is a single, inseparable cover with a large diameter. During production and assembly, the fan cover requires a lot of space and area for storage, increasing storage costs. The fan cover also requires a large packaging box for shipping, resulting in a small cargo capacity on the container truck and high transportation costs. The packaging box is generally made of cardboard. Due to the large diameter and volume of the fan cover, the center of the packaging box needs to be softer. If heavy goods are stacked on top of the fan cover when loading the container truck, it is easy to deform the fan cover and damage the cardboard box. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides a fan cover with a reasonable structural design. The front and rear covers of the fan cover are made of multiple detachable and assembleable pieces. The fan cover can be disassembled into several modules during packaging to compress the packaging volume, and then reassembled when in use.

[0009] The solution to the above technical problem is as follows:

[0010] An electric fan cover includes a front cover, a rear cover, and a clamping device. The front cover comprises two or more front fan-shaped cover blocks, which are radially adjacent to each other to form a complete front cover. The front fan-shaped cover blocks are detachable. The front fan-shaped cover blocks are formed by radially splitting the front cover. The rear cover comprises two or more rear fan-shaped cover blocks, which are radially adjacent to each other to form a complete rear cover. The rear fan-shaped cover blocks are detachable. The rear fan-shaped cover blocks are formed by radially splitting the rear cover. The front fan-shaped cover blocks and the rear fan-shaped cover blocks are detachably and fixedly connected by the clamping device.

[0011] The beneficial effects of this electric fan cover are as follows: This product disassembles a large-diameter electric fan cover into two or more fan-shaped cover blocks. After disassembly, the size of the fan cover body can be greatly reduced, and the volume of the fan cover can be significantly compressed. The fan-shaped cover blocks are stacked and packaged, and the packaging box of the electric fan cover is also greatly reduced in size. The smaller packaging size can save energy on packaging materials (e.g., plastic or paper products), reduce environmental pollution, and is more low-carbon and environmentally friendly. It also greatly reduces the packaging volume. The smaller packaging box has a smaller width and length, and its body strength is strengthened, making it less easily flattened and more effectively protecting the electric fan cover from damage. It can also save on packaging box manufacturing costs. The smaller packaging box volume can store more goods in the same space volume, and can also increase the loading capacity and reduce transportation costs. Especially in export ocean transportation, it can greatly reduce transportation costs and improve enterprise competitiveness. Attached Figure Description

[0012] Figure 1 , Figure 2 This is a split view of the front and rear covers of the product of this utility model, which are both divided into two equal parts and spliced ​​together.

[0013] Figure 3 This is a perspective view of the electric fan cover of this utility model product;

[0014] Figure 4 This is a schematic diagram of the product of this utility model after the front cover and the rear cover are divided into two equal parts and stacked together.

[0015] Figure 5 , Figure 6 This is a split view of the front and rear covers of the product of this utility model, which are both divided into two equal parts and spliced ​​together.

[0016] Figure 7 This is a perspective view of the electric fan cover of this utility model product;

[0017] Figure 8 This is a schematic diagram of the product of this utility model after the front cover and the rear cover are divided into two equal parts and stacked together.

[0018] Figure 9 , Figure 10This is a split view of the front and rear covers of the product of this utility model, which are each divided into three equal parts and spliced ​​together.

[0019] Figure 11 This is a perspective view of the electric fan cover of this utility model product;

[0020] Figure 12 This is a schematic diagram of the product of this utility model after the front cover and rear cover are divided into three equal parts and stacked.

[0021] Figure 13 , Figure 14 This is a split view of the front and rear covers of the product of this utility model, which are each divided into three equal parts and spliced ​​together.

[0022] Figure 15 This is a perspective view of the electric fan cover of this utility model product;

[0023] Figure 16 This is a schematic diagram of the product of this utility model after the front cover and rear cover are divided into three equal parts and stacked.

[0024] Figure 17 , Figure 18 This is a split view of the front and rear covers of the product of this utility model, which are each divided into four equal parts and spliced ​​together.

[0025] Figure 19 This is a perspective view of the electric fan cover of this utility model product;

[0026] Figure 20 This is a schematic diagram of the product of this utility model after the front cover and rear cover are divided into four equal parts and stacked.

[0027] Figure 21 , Figure 22 This is a split view of the front and rear covers of the product of this utility model, which are each divided into four equal parts and spliced ​​together.

[0028] Figure 23 This is a perspective view of the electric fan cover of this utility model product;

[0029] Figure 24 This is a schematic diagram of the product of this utility model after the front cover and rear cover are divided into four equal parts and stacked.

[0030] Figure 25 This is a perspective view of a universal flat front or rear cover for the present invention, divided into two equal parts.

[0031] Figure 26 yes Figure 25 A schematic diagram of the stacked state after splitting;

[0032] Figure 27 yes Figure 25 A diagram illustrating the breakdown;

[0033] Figure 28This is a three-dimensional view of a general-purpose flat front or rear cover for this utility model product, divided into three equal parts.

[0034] Figure 29 yes Figure 28 A schematic diagram of the stacked state after splitting;

[0035] Figure 30 yes Figure 28 A diagram illustrating the breakdown;

[0036] Figure 31 This is a perspective view of a universal flat front or rear cover for the product of this utility model, divided into four equal parts.

[0037] Figure 32 yes Figure 31 A schematic diagram of the stacked state after splitting;

[0038] Figure 33 yes Figure 31 A diagram illustrating the breakdown;

[0039] Figure 34 This is a perspective view of a universal flat front or rear cover for the product of this utility model, divided into four equal parts.

[0040] Figure 35 yes Figure 34 A schematic diagram of the stacked state after splitting;

[0041] Figure 36 yes Figure 34 A breakdown diagram.

[0042] Front cover 1, front fan-shaped cover block 11, front fastening connecting piece 101, front inner end common connector 11A, front inner end common connector ring metal piece 11A1, front fastening hole 1A1, front fastening piece 1A2, front radial radius metal strip 11B, front outer end common connector strip 11C, front insert pin 1C1, front pin 1C2, front middle common connector strip 11D, front support ear 1D1, front support ear hole 1D2, rear cover 2, rear fan-shaped cover block 21, rear Fastening connecting piece 201, rear inner end common connector 21A, rear inner end common connector ring metal piece 21A1, rear fastening hole 2A1, rear fastening piece 2A2, rear radial radius metal strip 21B, rear outer end common connector strip 21C, rear insert pin 2C1, rear pin shank hole 2C2, rear middle common connector strip 21D, rear support ear 2D1, rear support ear hole 2D2, clamp device 3, circular wrapping soft strip 31, ring-type wrapping groove 311, screw 32. Detailed Implementation

[0043] like Figures 1 to 24The image shows an electric fan cover, comprising a front cover 1, a rear cover 2, and a clamping device 3. The front cover 1 comprises two or more front fan-shaped cover blocks 11, which are radially adjacent to each other to form a complete front cover 1; the front fan-shaped cover blocks 11 are detachable; the front fan-shaped cover blocks 11 are formed by radial splitting of the front cover 1. The rear cover 2 comprises two or more rear fan-shaped cover blocks 21, which are radially adjacent to each other to form a complete rear cover 2; the rear fan-shaped cover blocks 21 are detachable; the rear fan-shaped cover blocks 21 are formed by radial splitting of the rear cover 2; the front fan-shaped cover blocks 11 and the rear fan-shaped cover blocks 21 are detachably fixedly connected by the clamping device 3. The front cover 1 and the rear cover 2 are made of stainless steel, iron, aluminum, or plastic. The front fan-shaped cover blocks and the rear fan-shaped cover blocks are divided into the same number of equal parts. The front cover 1 and rear cover 2 have a protective paint layer for a smooth and aesthetically pleasing finish. This product is mainly suitable for large-sized electric fans, such as commercial or industrial fans. These fan covers typically have a large diameter, for example, 1 to 3 meters. During factory packaging, the large-diameter front cover 1 and rear cover 2 are disassembled into two or more corresponding front fan-shaped cover blocks 11 and 21. This disassembly significantly reduces the size of the fan cover body, greatly compressing its volume. The front fan-shaped cover blocks 11 and 21 are stacked in the packaging, further reducing the size of the fan cover's box. Smaller packaging sizes save on packaging materials (e.g., ...). For example, plastic or paper products reduce environmental pollution, are more low-carbon and environmentally friendly, and greatly reduce packaging volume. The smaller the packaging box, the narrower and longer the box, the stronger the box itself, making it less easily crushed and more effectively protecting the fan cover from damage. It also saves on packaging box manufacturing costs. With a smaller packaging box, more goods can be stored in the same space, increasing the loading capacity and reducing transportation costs. This is especially true for export ocean shipping, which greatly reduces transportation costs and enhances the competitiveness of enterprises.

[0044] In use, the disassembled front fan-shaped cover blocks 11 are radially adjacent to form a complete front cover 1, and the disassembled rear fan-shaped cover blocks 21 are radially adjacent to form a complete rear cover 2. Then, the front cover 1 and the rear cover 2 are joined together and fixed by clamping the joint between the front cover 1 and the rear cover 2 with clamping device 3. The front fan-shaped cover blocks 11 and the rear fan-shaped cover blocks 21 are also fixedly connected by clamping device 3 to form a complete electric fan cover. The clamping device 3 is detachable. During packaging, the complete electric fan cover is disassembled into the front cover 1 and the rear cover 2, and then the front cover 1 and the rear cover 2 are disassembled into several front fan-shaped cover blocks 11 and rear fan-shaped cover blocks 21 respectively. After disassembly, they are stacked in corresponding layers, thereby compressing the volume for easy packaging.

[0045] Preferably, the front cover 1 includes two equally divided front fan-shaped cover blocks 11; the rear cover 2 includes two equally divided rear fan-shaped cover blocks 21; the number of blocks is set according to the actual situation, and the appropriate distribution position and direction are set.

[0046] Preferably, the front cover 1 is divided into two equal front fan-shaped cover blocks 11 by a diameter boundary, and the front fan-shaped cover blocks 11 are spliced ​​together adjacently between the diameters to form a complete front cover 1; the rear cover 2 is divided into two equal rear fan-shaped cover blocks 21 by a diameter boundary, and the rear fan-shaped cover blocks 21 are spliced ​​together adjacently between the diameters to form a complete rear cover 2; the equal division into half and the setting of suitable distribution positions and directions can compress the volume by about 50%, and the compression of the main body volume is relatively obvious, and the compression of the packaging volume is relatively obvious.

[0047] Preferably, the front cover 1 comprises three, four, five, six, seven, or eight equally divided front fan-shaped cover blocks 11; the rear cover 2 comprises three, four, five, six, seven, or eight equally divided rear fan-shaped cover blocks 21; the number of equal divisions of the front fan-shaped cover blocks 11 and the rear fan-shaped cover blocks 21 is the same. A suitable equal division is provided; the number of front fan-shaped cover blocks 11 and rear fan-shaped cover blocks 21 in this product is determined according to the diameter of the electric fan cover or according to actual needs; larger diameters can be divided into more fan-shaped cover blocks, and smaller diameters can be divided into fewer fan-shaped cover blocks. This can approximately compress the volume by a corresponding multiple, with a significant reduction in the volume of the main body and the packaging.

[0048] For example, 1: the front cover 1 is divided into two front fan-shaped cover blocks 11, and the rear cover 2 is also divided into two rear fan-shaped cover blocks 21, forming a total of four fan-shaped cover blocks. During packaging, the four fan-shaped cover blocks are stacked together to compress the packaging space.

[0049] For example 2: the front cover 1 is divided into three front fan-shaped cover blocks 11, and the rear cover 2 is also divided into three rear fan-shaped cover blocks 21, forming a total of six fan-shaped cover blocks. During packaging, the six fan-shaped cover blocks are stacked together to compress the packaging space.

[0050] For example, 3: the front cover 1 is divided into four front fan-shaped cover blocks 11, and the rear cover 2 is also divided into four rear fan-shaped cover blocks 21, forming a total of eight fan-shaped cover blocks. During packaging, the eight fan-shaped cover blocks are stacked together to compress the packaging space.

[0051] Preferably, the front cover 1 comprises three or more equally divided front fan-shaped cover blocks 11; the rear cover 2 comprises three or more equally divided rear fan-shaped cover blocks 21; the front fan-shaped cover blocks 11 are joined together radii apart to form a complete front cover 1; the rear fan-shaped cover blocks 21 are joined together radii apart to form a complete rear cover 2. Appropriate allocation positions and directions are set to facilitate splicing, and the cover blocks are divided based on a circular center, maximizing the volume of the front cover 1 or rear cover 2 when disassembled and compressed.

[0052] Preferably, the front fan-shaped cover block 11 and the rear fan-shaped cover block 21 are in the form of a grid mesh cover; the front fan-shaped cover block 11 includes a front inner common connector 11A, a plurality of front radial radius metal strips 11B, and a front outer common connector 11C. The front outer common connector 11C extends circumferentially, and the plurality of front radial radius metal strips 11B are arranged radially and in a ring. The inner ends of the plurality of front radial radius metal strips 11B are welded and fixedly connected to the front inner common connector 11A, and the outer ends of the plurality of front radial radius metal strips 11B are welded and fixedly connected to the front outer common connector 11C; two adjacent front fan-shaped cover blocks 11 are joined together by butt joints between adjacent front inner common connectors 11A, front radial radius metal strips 11B, and front outer common connectors 11C; the number of front radial radius metal strips 11B is generally ten to twenty, depending on the size.

[0053] Two adjacent front fan-shaped cover blocks 11 are joined together by a butt joint between adjacent front inner end common connector 11A, or several front radial radius metal strips 11B, or front outer end common connector 11C; that is: two front fan-shaped cover blocks 11 are joined together and fixed by butt joint between adjacent front inner end common connector 11A, or two front fan-shaped cover blocks 11 are joined together and fixed by butt joint between adjacent front radial radius metal strips 11B, or two front fan-shaped cover blocks 11 are joined together and fixed by butt joint between adjacent front outer end common connector 11C, or two front fan-shaped cover blocks 11 are joined together by butt joint between adjacent front inner end common connector 11A, between adjacent front radial radius metal strips 11B, and between adjacent front outer end common connector 11C, with suitable butt joint positions and splicing points set.

[0054] The front inner common connector 11A is a front inner common connector ring metal sheet 11A1, for example, an iron or steel metal sheet; the front radial radius metal strip 11B is an iron or steel metal strip; the front outer common connector 11C is an iron or steel metal strip.

[0055] One end of the two adjacent front inner end common connectors 11A is provided with a front fastening hole 1A1, and the other end extends to connect with a front fastening piece 1A2. When the two adjacent front fan-shaped cover blocks 11 are spliced, the front fastening piece 1A2 is inserted into the front fastening hole 1A1 for fixed connection, so that the front cover 1 is fixedly connected in the middle. The front fastening piece 1A2 and the front fastening hole 1A1 can be disassembled; however, it is not limited to the above-mentioned connection structure of the front fastening hole 1A1 and the front fastening piece 1A2, but can be other connection and fixing structures.

[0056] The rear fan-shaped cover block 21 includes a rear inner common connector 21A, several rear radial radius metal strips 21B, and a rear outer common connector 21C. The rear outer common connector 21C extends circumferentially, and the several rear radial radius metal strips 21B are arranged radially and in a ring. The inner ends of the several rear radial radius metal strips 21B are welded and fixedly connected to the rear inner common connector 21A, and the outer ends of the several rear radial radius metal strips 21B are welded and fixedly connected to the rear outer common connector 21C. Adjacent rear fan-shaped cover blocks 21 are butt-jointed and spliced ​​between adjacent rear inner common connectors 21A, rear radial radius metal strips 21B, and rear outer common connectors 21C. The number of rear radial radius metal strips 21B is generally ten to twenty, depending on the size.

[0057] Two adjacent rear fan-shaped cover blocks 21 are butt-jointed and spliced ​​between adjacent rear inner end common connectors 21A, or between several rear radial radius metal strips 21B, or between rear outer end common connectors 21C; that is: two rear fan-shaped cover blocks 21 are butt-jointed and spliced ​​together and fixed between adjacent rear inner end common connectors 21A, or two rear fan-shaped cover blocks 21 are butt-jointed and spliced ​​together and fixed between adjacent rear radial radius metal strips 21B, or two rear fan-shaped cover blocks 21 are butt-jointed and spliced ​​together and fixed between adjacent rear radial radius metal strips 21C. The two rear fan-shaped cover blocks 21 are connected and fixed by butt joint splicing between each other, or by butt joint splicing between each other between adjacent rear inner common connectors 21A and rear outer common connectors 21C, or by butt joint splicing between each other between adjacent rear inner common connectors 21A, between adjacent rear radial radius metal strips 21B, and between adjacent rear outer common connectors 21C, with appropriate butt joint positions and splicing points set.

[0058] The rear inner common connector 21A is a rear inner common connector ring metal sheet 21A1, for example, an iron or steel metal sheet; the rear radial radius metal strip 21B is an iron or steel metal strip; the rear outer common connector strip 21C is an iron or steel metal strip.

[0059] One end of the two adjacent rear inner end common connectors 21A is provided with a rear fastening hole 2A1, and the other end extends to connect with a rear fastening piece 2A2. When the two adjacent rear fan-shaped cover blocks 21 are spliced, the rear fastening piece 2A2 is inserted into the rear fastening hole 2A1 for fixed connection, so that the middle of the rear cover 2 is fixedly connected. The rear fastening piece 2A2 and the rear fastening hole 2A1 can be disassembled; however, it is not limited to the above-mentioned connection structure of the rear fastening hole 2A1 and the rear fastening piece 2A2, but can be other connection and fixing structures.

[0060] The above describes the specific structure of the front fan-shaped cover block 11 and the rear fan-shaped cover block 21. This structure is reasonably designed, simple in structure, has low wind resistance, and good ventilation. The front fan-shaped cover block 11 and the rear fan-shaped cover block 21 are made of the same material.

[0061] Preferably, the middle section of each of the plurality of front radial radius metal strips 11B is circumferentially fixedly connected with a front central common connecting strip 11D, which is used to enhance the overall strength and hardness of the cover and prevent the single front radial radius metal strip 11B from being too soft; the middle section of each of the plurality of rear radial radius metal strips 21B is circumferentially fixedly connected with a rear central common connecting strip 21D, which is used to enhance the overall strength and hardness of the cover and prevent the single rear radial radius metal strip 21B from being too soft.

[0062] Preferably, the fan cover is made of metal and is circular.

[0063] Preferably, the clamp device 3 includes a circular wrapping strip 31 and a screw 32. The circular wrapping strip 31 is made of metal sheet or plastic strip. The inner wall of the circular wrapping strip 31 has an annular wrapping groove 311. The common edge between the front fan-shaped cover block 11 and the rear fan-shaped cover block 21 is embedded in the annular wrapping groove 311. The two ends of the circular wrapping strip 31 are connected and tightened by the screw 32. The circular wrapping strip 31 can be disassembled by loosening the screw 32. The whole device is easy to assemble and disassemble, with low cost and easy assembly and disassembly.

[0064] Preferably, the front fan-shaped cover blocks 11 are connected and fixedly joined by screw assemblies, fasteners, male-female interlocking components, hook components, ropes, cable ties, or fastening connecting pieces, or any combination thereof; the rear fan-shaped cover blocks 21 are connected and fixedly joined by screw assemblies, fasteners, male-female interlocking components, hook components, ropes, cable ties, or fastening connecting pieces, or any combination thereof; the overall connection is reinforced and stable, and the assembled fan cover has better strength and hardness.

[0065] For example 1: Both ends of the front central common connecting strip 11D are connected to front support lugs 1D1. The front support lugs 1D1 have front support lug holes 1D2. When two adjacent front fan-shaped cover blocks 11 are spliced ​​together, the front support lugs 1D1 are stacked and joined together. Screws are screwed through the front support lug holes 1D2 of the two front support lugs 1D1 to connect and fix the two adjacent front central common connecting strips 11D. This makes the two adjacent front fan-shaped cover blocks 11 spliced ​​and fixed, so that there will be no misalignment and the connection is more firm and stable.

[0066] For example 2: Both ends of the rear central common connecting strip 21D are connected to rear support lugs 2D1. The rear support lugs 2D1 have rear support lug holes 2D2. When two adjacent rear fan-shaped cover blocks 21 are spliced ​​together, the rear support lugs 2D1 are stacked and joined together. Screws are screwed through the rear support lug holes 2D2 of the two rear support lugs 2D1 to connect and fix the two adjacent rear central common connecting strips 21D. This makes the two adjacent rear fan-shaped cover blocks 21 spliced ​​and fixed, so that there will be no misalignment and the connection is more firm and stable.

[0067] For example 3: A front fastening connecting piece 101 is welded to the edge of the cover between adjacent front fan-shaped cover blocks 11. The front fastening connecting piece 101 has screw holes. The screw assembly is screwed through the screw holes of both to tighten and fix the connection, so that the two adjacent front fan-shaped cover blocks 11 are spliced ​​and fixed.

[0068] For example 4: After welding and connecting the rear fan-shaped cover blocks 21 to the edge of the cover, the rear fastening connecting piece 201 is provided with screw holes. The screw assembly is screwed through the screw holes of both to tighten and fix the connection, so that the two adjacent front fan-shaped cover blocks 11 are spliced ​​and fixed.

[0069] For example 5: One end of the front outer common connecting strip 11C extends with a front insert rod 1C1, and the other end has a front insert rod hole 1C2. When two adjacent front fan-shaped cover blocks 11 are spliced, the front insert rod 1C1 between the two adjacent front outer common connecting strips 11C is inserted into the front insert rod hole 1C2 for connection and fixation. This makes positioning easier and prevents misalignment. The connection is more secure and stable, simple and beautiful, and also seamless.

[0070] For example, in case 6: one end of the rear outer common connecting strip 21C extends with a rear insert rod 2C1, and the other end has a rear needle rod hole 2C2. When two adjacent rear fan-shaped cover blocks 21 are spliced, the rear insert rod 2C1 between the two adjacent rear outer common connecting strips 21C is inserted into the rear needle rod hole 2C2 for connection and fixation. This makes positioning easier and prevents misalignment. The connection is more secure and stable, simple and beautiful, and also seamless.

[0071] Preferably, the front fan-shaped cover block 11 is an L-shaped fan-shaped cover block, an arc-shaped (arched) fan-shaped cover block, or a flat fan-shaped cover block, etc.

[0072] Preferably, the definition of "splicing" in this product includes, but is not limited to, the following splicing connection structures, such as those described in examples 1 to 6 above:

[0073] 1. Direct-connection structure: Direct-connection structure is a simple and direct splicing method; it connects components directly together by means of bolts, screws, welding or rivets; it has the advantages of easy assembly and low cost.

[0074] 2. Plug-in structure: The plug-in structure is a structure that is spliced ​​together by pre-designed interfaces on the fan-shaped cover block; the components are connected to each other by means of pins, slots, holes, etc., to form a solid structural system; it has the advantages of reliable connection and easy disassembly and assembly.

[0075] 3. Snap-fit ​​structure: The snap-fit ​​structure is a splicing method that fixes two fan-shaped cover blocks 1A together by snap-fit ​​components; the snap-fit ​​components are flexible and can be easily assembled and disassembled; the advantages of the snap-fit ​​structure are simple connection and easy adjustment.

[0076] Rope structure: A splicing method in which two fan-shaped cover blocks 1A can be fixed together by rope binding or wrapping.

Claims

1. A fan cover, comprising a front cover, a rear cover, and a clamping device, characterized in that: The front cover includes two or more front fan-shaped cover blocks, which are radially adjacent to each other to form a complete front cover; the front fan-shaped cover blocks are detachable; the front fan-shaped cover blocks are formed by radially splitting the front cover. The rear cover includes two or more rear fan-shaped cover blocks, which are radially adjacent to each other to form a complete rear cover; the rear fan-shaped cover blocks are detachable; the rear fan-shaped cover blocks are formed by radially splitting the rear cover. The front and rear fan-shaped cover blocks are detachably and fixedly connected by a clamp device.

2. The electric fan cover according to claim 1, characterized in that: The front cover comprises two equally divided front fan-shaped cover blocks; the rear cover comprises two equally divided rear fan-shaped cover blocks.

3. The electric fan cover according to claim 2, characterized in that: The front cover is divided into two equal front fan-shaped cover blocks by a diameter boundary. The front fan-shaped cover blocks are spliced ​​together adjacently between the diameters to form a complete front cover. The rear cover is divided into two equal fan-shaped cover blocks by a diameter boundary. The fan-shaped cover blocks are spliced ​​together adjacently between the diameters to form a complete rear cover.

4. The electric fan cover according to claim 1, characterized in that: The front cover comprises three, four, five, six, seven, or eight equally divided front fan-shaped cover blocks; the rear cover comprises three, four, five, six, seven, or eight equally divided rear fan-shaped cover blocks; the number of equal divisions of the front and rear fan-shaped cover blocks is the same.

5. A fan cover according to claim 4, characterized in that: The front fan-shaped cover blocks are joined together with their inner ends centered on the radius to form a complete front cover. The rear fan-shaped cover blocks are joined together with their inner ends centered on the radius to form a complete rear cover.

6. A fan cover according to any one of claims 1 to 5, characterized in that: The front fan-shaped cover block includes a front inner common connector, several front radial radius metal strips, and a front outer common connector. The front outer common connector extends circumferentially, and the several front radial radius metal strips are arranged radially and in a ring. The inner ends of the several front radial radius metal strips are fixedly connected to the front inner common connector, and the outer ends of the several front radial radius metal strips are fixedly connected to the front outer common connector. Adjacent front fan-shaped cover blocks are joined together by butt jointing between adjacent front inner common connectors, front radial radius metal strips, and front outer common connectors. The rear fan-shaped cover block includes a rear inner common connector, several rear radial radius metal strips, and a rear outer common connector. The rear outer common connector extends circumferentially, and the several rear radial radius metal strips are arranged radially and in a ring. The inner ends of the several rear radial radius metal strips are fixedly connected to the rear inner common connector, and the outer ends of the several rear radial radius metal strips are fixedly connected to the rear outer common connector. Two adjacent rear fan-shaped cover blocks are joined together by butt joints between adjacent rear inner common connectors, rear radial radius metal strips, and rear outer common connectors.

7. A fan cover according to claim 6, characterized in that: The middle sections of the plurality of front radial radius metal strips are circumferentially fixedly connected to a common front central connecting strip; the middle sections of the plurality of rear radial radius metal strips are circumferentially fixedly connected to a common rear central connecting strip.

8. A fan cover according to any one of claims 1 to 5, characterized in that: The fan cover is made of metal; the fan cover is circular.

9. A fan cover according to any one of claims 1 to 5, characterized in that: The clamping device includes a circular wrapping strip and a screw. The inner wall of the circular wrapping strip has an annular wrapping groove. The common edge between the front fan-shaped cover block and the rear fan-shaped cover block is embedded in the annular wrapping groove. The two ends of the circular wrapping strip are tightened and fixedly connected by the screw. The circular wrapping strip can be disassembled by loosening the screw.

10. A fan cover according to any one of claims 1 to 5, characterized in that: The front fan-shaped cover blocks are connected and fixedly joined by screw assemblies, fasteners, male and female interlocking components, hook components, ropes, cable ties, or fastening connecting pieces. The rear fan-shaped cover blocks are connected and fixed by means of screw assemblies, fasteners, male and female interlocking components, hook components, ropes, cable ties, or fastening connecting pieces.

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