Fan chassis and fan

Abstract

The utility model relates to a fan base plate and a fan, the fan base plate comprises a plate body, the plate body comprises a first plate body and a second plate body which are located on the two sides of a splitting line, and the first plate body and the second plate body are connected in a matched mode; the area occupied by the first disc body on the disc body is large, the area occupied by the second disc body on the disc body is small, and the first disc body is used for being connected with a fan body in a matched mode. Thus, the disc bodies are asymmetrically split, then a fan body can be installed on the first disc body, acting force generated when the head of the fan body swings is borne mainly through the large-area disc body, and the situation that the fan body transmits excessive acting force to the splitting line, and consequently the assembling strength between the first disc body and the second disc body is affected is prevented. And meanwhile, the packaging size can be reduced, and the packaging and transporting cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of fan technology, and in particular to fan chassis and fans. Background Technology

[0002] As living standards improve, people have increasingly higher demands for fans, which are now essential household appliances.

[0003] Generally, a fan consists of a fan chassis and a fan body. The fan body is mounted on the fan chassis, which supports it, and the fan body delivers airflow. The fan chassis typically employs either a one-piece design or a split design. A one-piece design increases the size of the packaging box, raising transportation costs. While a split design reduces packaging size to some extent, the joints are prone to loosening and deformation, weakening the chassis's support strength. This is especially true when the fan body oscillates left and right, as misalignment at the joints can occur, affecting the stability of the device. Therefore, traditional fan chassis cannot simultaneously address both transportation costs and operational stability. Utility Model Content

[0004] Therefore, it is necessary to provide a fan chassis and fan that address the problem that traditional fan chassis cannot balance packaging and transportation costs with operational stability.

[0005] A fan chassis includes a chassis body, the chassis body including a first chassis body and a second chassis body located on both sides of a split line, the first chassis body and the second chassis body being mated to each other, the first chassis body occupying a larger area on the chassis body, the second chassis body occupying a smaller area on the chassis body, and the first chassis body being mated to the fan body.

[0006] The splitting line includes at least two sub-splitting lines, and at least two of the sub-splitting lines have an included angle between them.

[0007] In the aforementioned fan chassis, the chassis is divided into a first chassis and a second chassis along a split line, with one chassis having a larger area and the other a smaller area. This asymmetrical split allows the fan body to be mounted on the larger chassis. The larger chassis primarily bears the force exerted by the fan body's head movement, preventing excessive force from being transmitted to the split line and affecting the assembly strength between the first and second chassis. This ensures the reliable support of the fan chassis and also reduces packaging size and transportation costs. In short, by asymmetrically splitting the chassis, both packaging and transportation costs and operational stability can be balanced.

[0008] In some embodiments, the disc body has a geometric center, and the sub-split lines adjacent to the geometric center are configured to curve toward the side that is offset from the geometric center and closer to the second disc body.

[0009] In some embodiments, the head of the fan body swings relative to the disk in a direction parallel to the circumference of the disk, and the projection of the swing range of the fan body head toward the disk is located on the first disk.

[0010] In some embodiments, the first disc body includes a central mounting portion and a first outer ring connected to each other, and the second disc body includes a second outer ring; the central mounting portion is used to mate with the fan body, the first outer ring surrounds a portion of the outer periphery of the central mounting portion, and the second outer ring surrounds another portion of the outer periphery of the central mounting portion and mates with the first outer ring.

[0011] In some embodiments, the included angle between the two opposite ends of the first outer ring along the circumferential direction is greater than 180 degrees, and the included angle between the two opposite ends of the second outer ring along the circumferential direction is less than 180 degrees; and / or

[0012] The first outer ring and the second outer ring are joined together to form a ring surrounding the central mounting portion.

[0013] In some embodiments, the central mounting portion includes a first portion and a second portion connected to each other, the first outer ring being disposed around the outer periphery of the first portion, the second portion protruding relative to the first outer ring, and the second outer ring being disposed around the outer periphery of the second portion;

[0014] At least a portion of the inner peripheral wall of the second outer ring abuts against at least a portion of the outer peripheral wall of the second portion along the radial limit of the second outer ring.

[0015] In some embodiments, a limiting groove is formed at the edge of the second part, and the second disc body also includes a protrusion disposed on the second outer ring. The protrusion is disposed on the inner peripheral wall of the second outer ring and is embedded in the limiting groove.

[0016] In some embodiments, the two opposite ends of the first outer ring along its own circumference are both first outer peripheral ends, and the two opposite ends of the second outer ring along its own circumference are both second outer peripheral ends. The first outer peripheral ends and the second outer peripheral ends are mutually limited and abutted against each other along the circumference of the first outer ring and are mutually engaged.

[0017] In some embodiments, a buckle is provided on one of the first outer peripheral end and the second outer peripheral end, and a fastening position is provided on the other of the first outer peripheral end and the second outer peripheral end, wherein the buckle engages with the fastening position.

[0018] In some embodiments, the second portion protrudes relative to the first outer peripheral end, and an included angle region is defined between the second portion and the first outer peripheral end;

[0019] The first disc body further includes a reinforcing portion, which is connected to the second portion and extends into the included angle region.

[0020] In some embodiments, the reinforcing portion is integrally formed with the second portion and connected to the first portion; and / or the reinforcing portion is connected to the first outer peripheral end.

[0021] In some embodiments, along the thickness direction of the disc body, the bottom end of the reinforcing part is connected to the second part at least, and there is an installation gap between the top end of the reinforcing part and the second part and the first outer peripheral end. The second outer peripheral end is sleeved on the reinforcing part and at least partially extends into the installation gap.

[0022] In some embodiments, at least one of the outer peripheral wall of the second portion and the inner peripheral wall of the second outer ring is provided with a rib that abuts against the other, and at least one of the first outer peripheral end and the second outer peripheral end is provided with a rib that abuts against the other.

[0023] A fan includes a fan body and a fan chassis, wherein the fan body is mounted on the fan chassis. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the fan chassis from one perspective in some embodiments of this application;

[0025] Figure 2 This is an exploded view of the fan chassis in some embodiments of this application;

[0026] Figure 3 This is a structural schematic diagram of the fan chassis from another perspective in some embodiments of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the first disk body in some embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the second disk body in some embodiments of this application;

[0029] Figure 6 This is a cross-sectional schematic diagram of the fan chassis in some embodiments of this application;

[0030] Figure 7 This is a schematic diagram of the fan chassis structure in some other embodiments of this application;

[0031] Figure 8This is a structural schematic diagram of the first disk body from one viewpoint in some other embodiments of this application;

[0032] Figure 9 This is a schematic diagram of the structure of the second disk body in other embodiments of this application;

[0033] Figure 10 This is a structural schematic diagram of the first disk body from another perspective in some other embodiments of this application;

[0034] Figure 11 This is a cross-sectional schematic diagram of the fan chassis in some other embodiments of this application;

[0035] Figure 12 for Figure 11 A partially enlarged view of the cross-sectional schematic diagram of the fan chassis shown.

[0036] Explanation of reference numerals in the attached drawings: 100, fan chassis; 10, disc body; 11, geometric center; 20, split line; 21, sub-split line; 30, first disc body; 32, central mounting part; 321, first part; 323, second part; 33, limiting groove; 34, first outer ring; 341, first outer peripheral end; 343, fastener; 50, second disc body; 52, second outer ring; 521, second outer peripheral end; 523, snap fastener; 54, protrusion; 60, included angle area; 70, reinforcing part; 80, installation gap; 90, rib. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 invention 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 invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] See Figure 1 According to some embodiments of this application, this application provides a fan, including a fan chassis 100 and a fan body. The fan body is mounted on the fan chassis 100 and supported by the fan chassis 100. The fan body delivers air through its head, and the head can also oscillate left and right to increase the air delivery range.

[0044] See Figures 1-5According to some embodiments of this application, the fan chassis 100 includes a disc body 10, which includes a first disc body 30 and a second disc body 50 located on both sides of a split line 20. The first disc body 30 and the second disc body 50 can be mated together under external force. One of the first disc body 30 and the second disc body 50 occupies a larger area on the disc body 10, while the other occupies a smaller area. The one with the larger area on the disc body 10 is used to mate with the fan body.

[0045] In other words, the disc 10 is split into a first disc 30 and a second disc 50 along the split line 20, with one of the first disc 30 and the second disc 50 having a larger area and the other having a smaller area. This asymmetrical split of the disc 10 allows the fan body to be installed on the larger of the first disc 30 and the second disc 50. The larger area is mainly used to bear the force of the fan body when its head swings, preventing the fan body from transmitting too much force to the split line 20 and affecting the assembly strength between the first disc 30 and the second disc 50. This ensures the reliability of the fan disc 10 and also reduces the packaging size and lowers packaging and transportation costs.

[0046] According to some embodiments of this application, the first disc 30 occupies a larger area on the disc 10, while the second disc 50 occupies a smaller area on the disc 10. That is, the first disc 30 has a larger area, while the second disc 50 has a smaller area. The first disc 30 is used to mate with the fan body.

[0047] Thus, the disc 10 is divided into a first disc 30 and a second disc 50 along the split line 20, with the first disc 30 having a larger area and the second disc 50 having a smaller area. This asymmetrical split of the disc 10 allows the fan housing to be installed on the first disc 30. The larger disc 30 primarily bears the force exerted by the fan housing during head oscillation, preventing excessive force from being transmitted to the split line 20 and affecting the assembly strength between the first and second discs 30. This ensures the reliable support of the fan disc 10 and also reduces packaging size and transportation costs. In other words, by asymmetrically splitting the disc 10, both packaging and transportation costs and operational stability can be balanced.

[0048] Furthermore, the split line 20 includes at least two sub-split lines 21, and at least two of the sub-split lines 21 within the split line 20 have an included angle. By setting multiple sub-split lines 21 with included angles, the split line 20 can be constructed into a non-linear shape, allowing for a larger division of the area of ​​the first disc body 30, thereby increasing the area of ​​the first disc body and enhancing the support stability of the fan chassis. Optionally, there may be an included angle between the first and last sub-split lines 21 within the split line 20, or between two adjacent sub-split lines 21 within the split line; this is not limited.

[0049] According to some embodiments of this application, the disc body 10 has a geometric center 11, and the sub-split line 21 of the split line 20 adjacent to the geometric center 11 is configured to bend toward the side that is away from the geometric center 11 and closer to the second disc body 50. This can increase the area of ​​the first disc body 30 near the geometric center 11 and increase the area of ​​the central region of the first disc body 30, which is convenient for mounting the fan body on the first disc body 30, and at the same time improves the overall stability of the fan chassis 100.

[0050] According to some embodiments of this application, the head of the fan body swings relative to the disc 10 in a direction parallel to the circumference of the disc 10, and the projection of the swing range of the fan body head toward the disc 10 is located on the first disc 30. In this way, the fan body will not pass over the split line 20 during the swing of the head, preventing the center of gravity projection of the fan body from covering the split line 20 during the operation of the fan, and preventing the fan body from exerting force on the split line 20, which would affect the reliable connection between the first disc 30 and the second disc 50, thereby improving the strength and support stability of the chassis.

[0051] According to some embodiments of this application, the first disc body 30 includes a central mounting portion 32 and a first outer ring 34 connected to each other, and the second disc body 50 includes a second outer ring 52. The central mounting portion 32 is used to mate with the fan housing, the first outer ring 34 surrounds a portion of the outer periphery of the central mounting portion 32, and the second outer ring 52 surrounds another portion of the outer periphery of the central mounting portion 32 and mates with the first outer ring 34.

[0052] In this way, the fan body is connected to the central mounting portion 32 on the first disc body 30. The fan body is only mounted on the first disc body 30 and has no assembly relationship with the second disc body 50. Therefore, it will not cover the split line 20 and directly affect the connection between the first disc body 30 and the second disc body 50. Furthermore, the first disc body 30 includes a first outer ring 34, and the second disc body 50 includes a second outer ring 52. The first outer ring 34 and the second outer ring 52 are connected and surround the central mounting portion 32. Thus, the first outer ring 34 and the second outer ring 52 support the central mounting portion 32, making the overall structure of the chassis more stable.

[0053] Optionally, the included angle between the two opposite ends of the first outer ring 34 along the circumferential direction is greater than 180 degrees, and the included angle between the two opposite ends of the second outer ring 52 along the circumferential direction is less than 180 degrees. In this way, the area of ​​the first outer ring 34 is larger and the area of ​​the second outer ring 52 is smaller, so that the first disk 30 as a whole has a larger area.

[0054] Alternatively, the first outer ring 34 and the second outer ring 52 can be joined together to form a ring around the central mounting part 32, so that the chassis formed is circular in shape, which is convenient for placement.

[0055] According to some embodiments of this application, the central mounting portion 32 includes a first portion 321 and a second portion 323 connected to each other. A first outer ring 34 is disposed around the outer periphery of the first portion 321. The second portion 323 protrudes relative to the first outer ring 34, and a second outer ring 52 is disposed around the outer periphery of the second portion 323. At least a portion of the inner peripheral wall of the second outer ring 52 and at least a portion of the outer peripheral wall of the second portion 323 are radially limited and abutted against each other.

[0056] In other words, the second part 323 on the central mounting part 32 protrudes from the first outer ring 34 but is not surrounded by the first outer ring 34, while the second outer ring 52 just surrounds the second part 323. Thus, after the second outer ring 52 and the first outer ring 34 are engaged, they can surround the entire central mounting part 32, making the overall structure of the chassis more balanced. Furthermore, at least a portion of the inner peripheral wall of the second outer ring 52 and at least a portion of the outer peripheral wall of the second part 323 are radially restrained and abutted against each other. Thus, through the cooperation of the second outer ring 52 and the second part 323, the second disc body 50 and the first disc body 30 are radially restrained and assembled.

[0057] Furthermore, a limiting groove 33 is formed at the edge of the second part 323, and the second disc 50 also includes a protrusion 54 disposed on the second outer ring 52. The protrusion 54 is disposed on the inner peripheral wall of the second outer ring 52 and is embedded in the limiting groove 33. In this way, the cooperation between the protrusion 54 and the limiting groove 33 is used to initially position the installation position of the second disc 50 and the first disc 30, so as to facilitate the subsequent mating of the first disc 30 and the second disc 50.

[0058] See Figures 2-6 According to some embodiments of this application, the two opposite ends of the first outer ring 34 along its own circumference are both first outer peripheral ends 341, and the two opposite ends of the second outer ring 52 along its own circumference are both second outer peripheral ends 521. The first outer peripheral ends 341 and the second outer peripheral ends 521 are mutually limited and abutted and fastened to each other along the circumference of the first outer ring 34. In this way, the first outer peripheral ends 341 and the second outer peripheral ends 521 of the first outer ring 34 and the second outer ring 52 are fastened to achieve the mating of the first outer ring 34 and the second outer ring 52.

[0059] Furthermore, a buckle 523 is provided on one of the first outer peripheral end 341 and the second outer peripheral end 521, and a fastening position 343 is provided on the other of the first outer peripheral end 341 and the second outer peripheral end 521. The buckle 523 and the fastening position 343 are engaged to connect the first outer peripheral end 341 and the second outer peripheral end 521 through the cooperation of the buckle 523 and the fastening position 343.

[0060] Optionally, the second outer peripheral end 521 is provided with a buckle 523, and the first outer peripheral end 341 is provided with a recessed fastening position 343. During installation, the second disc body 50 is sleeved on one side of the first disc body 30, and the buckle 523 of the second outer peripheral end 521 extends into the fastening position 343 of the first outer peripheral end 341 to realize the mating of the first disc body 30 and the second disc body 50.

[0061] See Figures 7-9 According to some embodiments of this application, the second portion 323 protrudes relative to the first outer peripheral end 341, and an included angle region 60 is defined between the second portion 323 and the first outer peripheral end 341. The first disc body 30 also includes a reinforcing portion 70, which is connected to the second portion 323 and extends into the included angle region 60. The reinforcing portion 70 connected to the second portion 323 is thus provided so that the second portion 323 does not protrude independently, and the reinforcing portion 70 extends into the included angle region 60. In this way, when the second portion 323 is subjected to external force, the force can be transmitted to the reinforcing portion 70 in the included angle region 60. The reinforcing portion 70 distributes the external force on the second portion 323, thereby increasing the strength of the second portion 323 and preventing damage to the second portion 323.

[0062] See Figures 8-10 Furthermore, the reinforcing part 70 is integrally formed with the second part 323 and connected to the first part 321. In this way, the reinforcing part 70 and the second part 323 are integrally formed, and the reinforcing part 70 and the second part 323 are integrated into one, so that the whole formed by the second part 323 and the reinforcing part 70 is connected to the first part 321. The whole formed by the integral forming of the second part 323 and the reinforcing part 70 has a large area, which can provide good support and force, and the overall force is more uniform, preventing the existence of obvious weak areas and improving the overall strength of the first disc 30.

[0063] Furthermore, the reinforcing part 70 is connected to the first outer peripheral end 341. Thus, the reinforcing part 70 protrudes from the second part 323 to the included angle region 60 and extends to connect with the first outer peripheral end 341, so that the reinforcing part 70 connects and covers the included angle region 60 between the second part 323 and the first outer peripheral end 341, so that the first outer peripheral end 341 and the second part 323 are connected to each other, preventing the first outer peripheral end 341 and the second part 323 from being suspended, and improving the strength of the first outer peripheral end 341 and the second part 323.

[0064] According to some embodiments of this application, along the thickness direction of the disc body 10, the bottom end of the reinforcing part 70 is at least connected to the second part 323, and there is an installation gap 80 between the top end of the reinforcing part 70, the second part 323, and the first outer peripheral end 341. The second outer peripheral end 521 is sleeved on the reinforcing part 70 and at least partially extends into the installation gap 80. In this way, on the one hand, the bottom end of the reinforcing part 70 is connected to the first outer peripheral end 341 and the second part 323 to connect the first outer peripheral end 341 and the second part 323, thereby enhancing the overall strength; on the other hand, there is an installation gap 80 between the top end of the reinforcing part 70, the second part 323, and the first outer peripheral end 341, and the second outer peripheral end 521 of the second disc body 50 can be sleeved on the top end of the reinforcing part 70 and at least partially extends into the installation gap 80, so that the reinforcing part 70 and the second disc body 50 avoid each other, and the second outer peripheral end 521 of the second disc body 50 can still be mated with the first outer peripheral end 341.

[0065] Specifically, the second outer ring 52 includes a second outer ring 52 body and sidewalls surrounding the outer periphery of the second outer ring 52 body. The sidewalls of the second outer ring 52 can extend into the installation gap 80 to achieve the fitting assembly of the second outer ring 52 and the reinforcing part 70. Furthermore, a snap fastener 523 is formed at the sidewall of the second outer ring 52 body. When the sidewall of the second outer ring 52 extends into the installation gap 80, the snap fastener 523 also extends into the installation gap 80 and engages with the snap position 343 of the first outer peripheral end 341.

[0066] See Figure 8 and Figures 11-12 According to some embodiments of this application, at least one of the outer peripheral wall of the second portion 323 and the inner peripheral wall of the second outer ring 52 is provided with a rib 90 that abuts against the other. This causes the rib 90 to be pressed between the second portion 323 and the second outer ring 52, increasing the friction between the second portion 323 and the second outer ring 52 and improving the installation reliability of both. Additionally, at least one of the first outer peripheral end 341 and the second outer peripheral end 521 is provided with a rib 90 that abuts against the other. This causes the rib 90 to be pressed between the second portion 323 and the second outer ring 52, increasing the friction between the first outer peripheral end 341 and the second outer peripheral end 521 and improving the installation reliability of both.

[0067] In this way, when the first disc 30 and the second disc 50 are mated, a rib 90 is provided at the mating position. After the first disc 30 and the second disc 50 are mated, the rib 90 abuts between the first disc 30 and the second disc 50 to increase the friction between the first disc 30 and the second disc 50 and improve the installation reliability of the two.

[0068] According to some embodiments of this application, the fan chassis 100 also includes fasteners that pass through the tabs 54 on the second disc 50 and the center mounting portion 32 on the first disc 30 to further securely connect the first disc 30 and the second disc 50.

[0069] According to some embodiments of this application, this application also provides a fan chassis 100 as described in any of the above embodiments. The fan chassis 100 includes a chassis 10, which includes a first chassis 30 and a second chassis 50 located on both sides of a split line 20, and the first chassis 30 and the second chassis 50 are mated together. One of the first chassis 30 and the second chassis 50 occupies a larger area on the chassis 10, while the other occupies a smaller area. The one with the larger area on the chassis 10 is used to mate with the fan body.

[0070] In other words, the disc 10 is divided into a first disc 30 and a second disc 50 along the split line 20, with one disc 30 having a larger area and the other a smaller area. This asymmetrical split of the disc 10 allows the fan housing to be mounted on the larger disc 30. The larger disc 50 primarily bears the force exerted by the fan housing during head oscillation, preventing excessive force from being transmitted to the split line 20 and affecting the assembly strength between the first disc 30 and the second disc 50. This ensures the reliable support of the fan disc 10 and also reduces packaging size and transportation costs. In short, by asymmetrically splitting the disc 10, both packaging and transportation costs and operational stability can be balanced.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fan chassis, characterized in that, The device includes a disc body, which includes a first disc body and a second disc body located on both sides of a split line. The first disc body and the second disc body are connected to each other, and the first disc body occupies a larger area on the disc body, while the second disc body occupies a smaller area on the disc body. The first disc body is used to connect with the fan body. The splitting line includes at least two sub-splitting lines, and at least two of the sub-splitting lines have an included angle between them.

2. The fan chassis according to claim 1, characterized in that, The disc has a geometric center, and the sub-split lines adjacent to the geometric center are configured to bend toward the side that is off-center from the geometric center and closer to the second disc.

3. The fan chassis according to claim 1, characterized in that, The head of the fan body swings relative to the disc in a direction parallel to the circumference of the disc, and the projection of the swing range of the head of the fan body toward the disc is located on the first disc.

4. The fan chassis according to claim 1, characterized in that, The first disc body includes a central mounting portion and a first outer ring connected to each other, and the second disc body includes a second outer ring; the central mounting portion is used to mate with the fan body, the first outer ring surrounds a portion of the outer periphery of the central mounting portion, and the second outer ring surrounds another portion of the outer periphery of the central mounting portion and mates with the first outer ring.

5. The fan chassis according to claim 4, characterized in that, The included angle between the two opposite ends of the first outer ring along the circumferential direction is greater than 180 degrees, and the included angle between the two opposite ends of the second outer ring along the circumferential direction is less than 180 degrees; and / or The first outer ring and the second outer ring are joined together to form a ring surrounding the central mounting portion.

6. The fan chassis according to claim 4, characterized in that, The central mounting portion includes a first portion and a second portion that are connected to each other. The first outer ring is arranged around the outer periphery of the first portion, and the second portion protrudes relative to the first outer ring, and the second outer ring is arranged around the outer periphery of the second portion. At least a portion of the inner peripheral wall of the second outer ring abuts against at least a portion of the outer peripheral wall of the second portion along the radial limit of the second outer ring.

7. The fan chassis according to claim 6, characterized in that, A limiting groove is formed at the edge of the second part, and the second disc body also includes a protrusion on the second outer ring. The protrusion is located on the inner peripheral wall of the second outer ring and is embedded in the limiting groove.

8. The fan chassis according to claim 6, characterized in that, The two opposite ends of the first outer ring along its own circumference are both first outer peripheral ends, and the two opposite ends of the second outer ring along its own circumference are both second outer peripheral ends. The first outer peripheral ends and the second outer peripheral ends are mutually limited and abutted against each other along the circumference of the first outer ring and are mutually engaged.

9. The fan chassis according to claim 8, characterized in that, A buckle is provided on one of the first outer peripheral end and the second outer peripheral end, and a fastening position is provided on the other of the first outer peripheral end and the second outer peripheral end, and the buckle engages with the fastening position.

10. The fan chassis according to claim 8, characterized in that, The second part protrudes relative to the first outer peripheral end, and an angled region is defined between the second part and the first outer peripheral end; The first disc body further includes a reinforcing portion, which is connected to the second portion and extends into the included angle region.

11. The fan chassis according to claim 10, characterized in that, The reinforcing part is integrally formed with the second part and connected to the first part; and / or the reinforcing part is connected to the first outer peripheral end.

12. The fan chassis according to claim 10, characterized in that, Along the thickness direction of the disc body, the bottom end of the reinforcing part is connected to the second part at least, and there is an installation gap between the top end of the reinforcing part, the second part, and the first outer peripheral end. The second outer peripheral end is sleeved on the reinforcing part and at least partially extends into the installation gap.

13. The fan chassis according to any one of claims 8-12, characterized in that, At least one of the outer peripheral wall of the second part and the inner peripheral wall of the second outer ring is provided with a rib that abuts against the other, and at least one of the first outer peripheral end and the second outer peripheral end is provided with a rib that abuts against the other.

14. A fan, characterized in that, It includes a fan body and a fan chassis as described in any one of claims 1-13, wherein the fan body is mounted on the fan chassis.

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