Fan assembly and neck fan

Abstract

The utility model relates to fan technical field discloses a fan assembly and neck-hung fan, this fan assembly includes stator subassembly, rotor subassembly, fixed support subassembly and fan blade, the stator subassembly includes stator core, the stator core is equipped with the center hole, the rotor subassembly includes rotor shell, magnet and pivot, the magnet fixedly arranged in the inside of rotor shell, one end of pivot is fixedly connected with rotor shell, the fan blade is arranged in the outside of rotor shell, the fixed support subassembly is used for fixing stator subassembly, the other end of pivot passes through the center hole of stator core and is rotatably connected with fixed support subassembly. Through above -mentioned mode, the utility model realizes the fan motor structure more compact, under same fan blade diameter, the wheel disc is smaller, and the blade width is bigger, and the air volume is effectively increased.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a fan assembly and a neck fan. Background Technology

[0002] Currently, with the improvement of living standards, people have put forward higher requirements for the comfort and convenience of life. Especially when engaging in outdoor activities in the hot summer, people usually wear neck fans to output cold energy to cool down their body parts.

[0003] However, due to the compact space and limited fan size, the fan motor is constrained by the plastic central fixing column structure. The silicon steel sheet needs to be fitted onto the fixing column, resulting in a large overall diameter. Consequently, the width of the fan blades is also difficult to increase, resulting in a smaller air volume and a poor blowing sensation. Summary of the Invention

[0004] In view of the above problems, this utility model provides a fan assembly and a neck fan to solve the problem of small blade width and small air volume caused by the large size of the fan motor in the prior art.

[0005] According to one aspect of the present invention, a fan assembly is provided, the fan assembly including a stator assembly, a rotor assembly, a fixed support assembly, and blades; The stator assembly includes a stator core, and the stator core has a central hole; The rotor assembly includes a rotor housing, a magnet, and a rotating shaft; the magnet is fixedly disposed on the inner side of the rotor housing; one end of the rotating shaft is fixedly connected to the rotor housing; and the blades are disposed on the outer side of the rotor housing. The fixed support assembly is used to fix the stator assembly; the other end of the rotating shaft passes through the central hole of the stator core and is rotatably connected to the fixed support assembly.

[0006] In one alternative embodiment, the fixed support assembly includes a base on which a hollow cylinder is disposed; the hollow cylinder is embedded in the central hole of the stator core and is fixedly connected to the central hole; the other end of the rotating shaft passes through the hollow cylinder and is rotatably connected to the base.

[0007] In one alternative embodiment, the fixed support assembly further includes a first bushing and a second bushing disposed within the hollow cylinder; the first bushing and the second bushing are respectively fitted onto the upper end and the lower end of the rotating shaft.

[0008] In one alternative embodiment, the fixed support assembly further includes a limiting member connected to one end of the rotating shaft near the base to axially limit the rotating shaft.

[0009] In one alternative embodiment, the stator core includes a silicon steel sheet and a coil wound on the silicon steel sheet, the silicon steel sheet including a central portion and a silicon steel portion; the central portion is provided with a central hole that extends vertically. The outer surface of the central part is provided with a plurality of silicon steel sections along the circumferential direction, and the coil is wound around the silicon steel sections.

[0010] In one alternative embodiment, the rotor housing is a cylindrical structure with one end open, the rotor housing includes a bottom and a cylindrical wall arranged circumferentially along the bottom, and the rotating shaft is disposed at the center of the rotor housing; the stator assembly is sleeved inside the rotor housing; one end of the rotating shaft is fixedly connected to the bottom of the cylinder, and the other end passes through the central hole and is rotatably connected to the fixed support assembly.

[0011] In one alternative embodiment, the fan blade includes a fixed housing and a plurality of blades; the plurality of blades are arranged circumferentially around the fixed housing, and a first fixing hole is provided on the mounting surface of the fixed housing; a second fixing hole corresponding to the first fixing hole is provided at the bottom of the cylindrical structure; a fixing member is provided through the first fixing hole and the second fixing hole to fix the fixed housing to the rotor housing.

[0012] In one alternative embodiment, the ratio of the diameter of the rotor housing to the diameter of the fan blade is in the range of 0.25-0.4.

[0013] In one alternative embodiment, the rotor housing is further provided with at least one heat dissipation hole, which extends through the bottom of the cylinder.

[0014] In one alternative embodiment, a height ring is provided inside the rotor housing, the height ring being attached to the inner surface of the cylinder wall, and the height ring being located between the magnet and the bottom of the cylinder.

[0015] According to another aspect of the present utility model, a neck fan is provided, comprising: a housing, the housing including a neck hanging part and two handle parts respectively connected to both ends of the neck hanging part, the neck hanging part and the two handle parts together forming a wearing space; the housing including an inner housing facing the wearing space and an outer housing facing away from the wearing space; and an air inlet and an air outlet are provided on the housing; Each of the two handle portions is provided with the fan assembly.

[0016] In one alternative embodiment, the neck fan further includes a support bracket; The housing has a receiving cavity, and the support bracket is fixedly disposed within the receiving cavity; The fixed support assembly is fixed to the support bracket.

[0017] The fan assembly of this utility model embodiment includes a stator assembly, a rotor assembly, a fixed support assembly, and fan blades. The stator assembly includes a stator core with a central hole. The rotor assembly includes a rotor housing, a magnet, and a shaft. The magnet is fixedly disposed inside the rotor housing. One end of the shaft is fixedly connected to the rotor housing. The fan blades are disposed outside the rotor housing. The fixed support assembly is used to fix the stator assembly. The other end of the shaft passes through the central hole of the stator core and is rotatably connected to the fixed support assembly. By setting the shaft in the central hole, the intermediate fixing column mechanism of the prior art is eliminated, making the stator core structure more compact and space utilization higher. This allows for a larger blade width, resulting in increased airflow and effectively improving the fan's blowing effect.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This diagram illustrates the three-dimensional state of the fan assembly provided in this embodiment of the present invention and the state in which the motor and blades are separated. Figure 2 An exploded view of the motor of the fan assembly provided in an embodiment of the present invention is shown; Figure 3 A perspective view of the rotor housing and blades of the fan assembly provided in an embodiment of the present invention is shown at another angle. Figure 4 A schematic diagram of the neck fan provided in an embodiment of this utility model is shown.

[0020] The reference numerals in the detailed embodiments are as follows: Fan assembly 00, motor 10, blades 20, first fixing hole 21, circuit board 100, rotor housing 110, rotating shaft 120, magnet 130, height ring 140, second fixing hole 1101, heat dissipation hole 1102, stator core 210, base 310, hollow cylinder 320, through hole 330, second bushing 340, first bushing 350, limiting member 360, first gasket 370, second gasket 380, inner housing 410, outer housing 420, support bracket 430. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0022] Please see Figures 1-3 , Figure 1 A perspective view of an embodiment of the fan assembly 00 of the present invention is shown. The fan assembly includes a motor 10 and fan blades. The fan blades are fixed to the motor 10 to form the fan assembly 00.

[0023] In this embodiment, the motor 10 includes a stator assembly, a rotor assembly, and a fixed support assembly.

[0024] Among them, such as Figure 2 As shown, the stator assembly includes a stator core 210, which has a central hole. In this embodiment, the stator core 210 may include a silicon steel sheet and a coil wound on the silicon steel sheet. Wherein, as... Figure 2 As shown, the silicon steel sheet includes a central part and silicon steel parts; the central part is provided with a central hole that runs through the top and bottom; the outer surface of the central part is provided with a plurality of silicon steel parts along the circumferential direction, and the coil is wound around the silicon steel parts.

[0025] In this embodiment, the rotor assembly includes a rotor housing 110, a magnet 130, and a rotating shaft 120. The magnet 130 is fixedly disposed on the inner side of the rotor housing 110. One end of the rotating shaft 120 is fixedly connected to the rotor housing 110. The fixed connection of one end of the rotating shaft 120 to the rotor housing 110 allows for positioning of the rotor housing 110 relative to the stator assembly. The fan blades are disposed on the outside of the rotor housing 110. Due to the gap between the magnet and the bottom of the rotor housing, a height ring 140 is provided inside the rotor housing to prevent displacement of the magnet 130 within the housing. The height ring is attached to the inner surface of the cylinder wall and is located between the magnet and the bottom of the cylinder.

[0026] The fixed support assembly is used to fix the stator assembly; the other end of the rotating shaft 120 passes through the central hole of the stator core 210 and is rotatably connected to the fixed support assembly.

[0027] This embodiment of the invention features a rotating shaft 120 housed in a central hole. By placing the fan 20 outside the rotor housing 110, and using a fixed support assembly to provide axial support and fixation for the stator and rotor assemblies, the invention eliminates the need for the intermediate fixing column mechanism found in existing technologies. This overcomes the problem of excessive size caused by the stator assembly being fitted onto an external fixing column in the prior art. The stator core structure is more compact, with higher space utilization, allowing for a wider fan blade, resulting in increased airflow and effectively improving the fan's blowing effect.

[0028] Specifically, in one embodiment of this utility model, the rotor housing 110 can be configured as a cylindrical structure with one open end. The rotor housing 110 includes a cylindrical bottom and a cylindrical wall arranged circumferentially along the cylindrical bottom. The rotating shaft 120 is disposed at the center of the rotor housing 110, that is, at the center of the cylindrical bottom. The stator assembly is disposed inside the rotor housing 110. One end of the rotating shaft 120 is fixedly connected to the cylindrical bottom, and the other end passes through the central hole and is rotatably connected to the fixed support assembly. With this arrangement, the rotor housing 110 houses the stator assembly inside, and the two are rotatably connected and positioned by the rotating shaft 120. The fixed support assembly provides fixation and support for the rotor assembly and the rotating shaft 120 at the bottom. Furthermore, by setting the fan 20 outside the rotor housing 110, the size of the motor is greatly reduced, so that the fan blades can occupy a larger area relative to the motor in a smaller space, realizing a large air volume fan in a smaller space, thereby allowing more air to be drawn in and more air to be blown out at the same rotation speed.

[0029] like Figure 3As shown, the fan blade includes a fixed shell and multiple blades 20 arranged circumferentially around the fixed shell. The fixed shell has a first fixing hole 21; the bottom of the cylinder has a second fixing hole 1101 corresponding to the first fixing hole 21. Fixing members are inserted through the first fixing hole 21 and the second fixing hole 1101 to fix the fixed shell to the rotor shell. To provide a more secure connection, this embodiment can have three first fixing holes 21 and three second fixing holes 1101 corresponding to the center circumference of the bottom of the cylinder, and are fixed with screws. It can be understood that the fixed shell can also be a cylindrical structure with one open side. Therefore, the fixed shell can be fitted onto the rotor shell 110 along the opening direction, and the outer surface of the bottom of the rotor shell 110 is in contact with the inner surface of the fixed shell. The multiple blades 20 are inclinedly arranged on the outer surface of the fixed shell along its circumference. This arrangement allows for a larger blade width within the same space, where the blade width is the dimension of the blade along the radial direction of the fixed shell. In one embodiment of this utility model, the ratio of the diameter of the rotor housing to the diameter of the fan blade can be in the range of 0.25-0.4. It can be seen that, compared with the motors in the prior art, the rotor housing of the motor of this utility model has a smaller radial dimension, thereby allowing the width of the blades to be further increased.

[0030] The fixed support assembly includes a base 310, on which a hollow cylinder 320 is provided. The hollow cylinder 320 includes a through hole 330 extending vertically, with the bottom of the through hole 330 penetrating the center of the base. The hollow cylinder 320 is embedded in the central hole of the stator core 210 and is fixedly connected to the central hole. The other end of the rotating shaft 120 passes through the hollow cylinder 320 and is rotatably connected to the base 310. By setting the hollow cylinder 320 to be embedded in the central hole of the stator core 210, the size of the motor can be minimized while the fixed support assembly can achieve better fixation and support positioning of the stator and rotor assemblies.

[0031] In this embodiment, to provide radial support for the rotating shaft 120 and ensure rotational coaxiality, a first bushing 350 and a second bushing 340 are provided within the through hole 330 of the hollow cylinder. The first bushing 350 and the second bushing 340 are respectively fitted onto the upper and lower ends of the rotating shaft 120, which are opposite ends of the rotating shaft 120, thereby achieving radial support for the rotating shaft 120. Simultaneously, this avoids wear caused by direct contact between the rotating shaft 120 and the metal hollow cylinder 320. Furthermore, to prevent the rotating shaft 120 from axially detaching from the fixed support assembly, the fixed support assembly in this embodiment also includes a limiting member 360. The limiting member 360 is connected to the end of the rotating shaft 120 near the base 310 to axially limit the rotating shaft 120. Specifically, after the other end of the rotating shaft 120 passes through the through hole 330, it extends out of the base 310 away from the rotor housing and is fixed by the limiting member 360 and the second washer 380, thereby rotatably fixing the other end of the rotating shaft 120 to one end of the base 310. The limiting member 360 can be a retaining ring. A first washer 370 is also provided at the connection point between the first bushing 350 and the rotating shaft to achieve a further tight connection.

[0032] To improve heat dissipation of the motor, at least one heat dissipation hole 1102 is provided on the rotor housing 110, and the heat dissipation hole is disposed through the bottom of the cylinder. To further improve heat dissipation and enhance structural strength, in this embodiment, the rotor housing 110 and the fixed support assembly are made of metal.

[0033] The fan assembly also includes a circuit board 100, which is electrically connected to the stator assembly, thereby enabling control of the stator assembly's rotation when the circuit board 100 is powered on. The circuit board 100 can be a hollow circuit board, allowing it to be fitted onto the hollow cylinder 320, thus effectively fixing the circuit board 100 while further reducing the size of the fan assembly's motor.

[0034] like Figure 4 As shown, this utility model embodiment also provides a neck fan, which includes a housing, the housing including a neck hanging part and two handle parts respectively connected to both ends of the neck hanging part, the neck hanging part and the two handle parts together forming a wearing space; the housing includes an inner housing 410 facing the wearing space and an outer housing 420 facing away from the wearing space; the housing is provided with an air inlet and an air outlet.

[0035] Each of the two handle portions is provided with the aforementioned fan assembly 00, and the airflow of the fan assembly 00 is connected to the air inlet and the air outlet.

[0036] The neck fan also includes a support bracket 430. A receiving cavity is provided within the housing, and the support bracket 430 is fixedly disposed within the receiving cavity. The fan assembly 00 is fixed to the support bracket 430 via its fixing support assembly.

[0037] As can be seen, by setting the rotating shaft 120 in the central hole, the fan assembly 00 of this utility model embodiment can eliminate the need for the intermediate fixing column mechanism in the prior art, making the structure of the stator core 210 more compact. This results in higher space utilization when installed in a neck fan, allowing for a wider blade width and increased airflow of the neck fan, effectively improving the fan's blowing effect.

[0038] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0039] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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 the embodiments of the present invention.

[0040] Furthermore, technical terms such as "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. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0041] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0042] In the description of this embodiment of the invention, unless otherwise expressly 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.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fan assembly, characterized in that, The fan assembly includes a stator assembly, a rotor assembly, a fixed support assembly, and fan blades; The stator assembly includes a stator core, and the stator core has a central hole; The rotor assembly includes a rotor housing, a magnet, and a rotating shaft; the magnet is fixedly disposed inside the rotor housing; one end of the rotating shaft is fixedly connected to the rotor housing; and the fan blades are disposed outside the rotor housing. The fixed support assembly is used to fix the stator assembly; the other end of the rotating shaft passes through the central hole of the stator core and is rotatably connected to the fixed support assembly.

2. The fan assembly according to claim 1, characterized in that, The fixed support assembly includes a base on which a hollow cylinder is disposed; the hollow cylinder is embedded in the central hole of the stator core and is fixedly connected to the central hole; the other end of the rotating shaft passes through the hollow cylinder and is rotatably connected to the base.

3. The fan assembly according to claim 2, characterized in that, The fixed support assembly further includes a first bushing and a second bushing disposed inside the hollow cylinder; the first bushing and the second bushing are respectively sleeved on the upper end and the lower end of the rotating shaft.

4. The fan assembly according to claim 2, characterized in that, The fixed support assembly also includes a limiting member; the limiting member is connected to one end of the rotating shaft near the base to axially limit the rotating shaft.

5. The fan assembly according to claim 1, characterized in that, The stator core includes a silicon steel sheet and a coil wound on the silicon steel sheet. The silicon steel sheet includes a central part and a silicon steel part. The central part is provided with a central hole that runs through the top and bottom. The outer surface of the central part is provided with a plurality of silicon steel sections along the circumferential direction, and the coil is wound around the silicon steel sections.

6. The fan assembly according to any one of claims 1-5, characterized in that, The rotor housing is a cylindrical structure with one end open. The rotor housing includes a bottom and a cylindrical wall arranged circumferentially along the bottom. The rotating shaft is located at the center of the rotor housing. The stator assembly is located inside the rotor housing. One end of the rotating shaft is fixedly connected to the bottom of the cylinder, and the other end passes through the central hole and is rotatably connected to the fixed support assembly.

7. The fan assembly according to claim 6, characterized in that, The fan blade includes a fixed shell and multiple blades; the multiple blades are arranged circumferentially around the fixed shell, and the fixed shell is provided with a first fixing hole; the bottom of the cylinder is provided with a second fixing hole corresponding to the first fixing hole; a fixing member is provided through the first fixing hole and the second fixing hole to fix the fixed shell to the rotor shell.

8. The fan assembly according to claim 7, characterized in that, The ratio of the diameter of the rotor housing to the diameter of the fan blade is in the range of 0.25-0.

4.

9. The fan assembly according to claim 7, characterized in that, The rotor housing is also provided with at least one heat dissipation hole, which is disposed through the bottom of the cylinder.

10. The fan assembly according to claim 6, characterized in that, A height ring is provided inside the rotor housing. The height ring is attached to the inner surface of the cylinder wall and is located between the magnet and the bottom of the cylinder.

11. A neck fan, characterized in that, The neck fan includes a housing, which includes a neck hanging part and two handle parts respectively connected to both ends of the neck hanging part. The neck hanging part and the two handle parts together form a wearing space. The housing includes an inner housing facing the wearing space and an outer housing facing away from the wearing space. An air inlet and an air outlet are provided on the housing. Each of the two handle portions is provided with a fan assembly as described in any one of claims 1-10.

12. The neck fan according to claim 11, characterized in that, The neck fan also includes a support bracket; The housing has a receiving cavity, and the support bracket is fixedly disposed within the receiving cavity; The fixed support assembly is fixed to the support bracket.

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