Neck-hung fan and fan assembly

Abstract

The utility model provides a neck-hanging fan which is characterized by comprising a shell, a fan body, a fan cover and a fan cover, and the shell comprises an air inlet and an air outlet which are communicated with the interior of the shell; the fan assembly is contained in the shell, the fan assembly sucks airflow into the shell from the air inlet, and then the airflow is blown out from the air outlet; wherein the fan assembly comprises an installation part, fan blades and a motor, and after the installation part, the fan blades and the motor are fixed in a nested mode, the installation part is fixedly connected to the shell. According to the fan assembly, the fan blades and the motor which are tightly combined are firstly installed together through the installation part, so that the fan assembly is formed, the fan assembly can be flexibly installed, disassembled, replaced, maintained, cleaned, transported and the like, the structure is integrated, the assembling efficiency is improved, and quality control is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and particularly to a neck-mounted fan with flexible components. Background Art

[0002] In existing neck-mounted fans, the motor and the fan blade are usually installed on the housing in sequence, and then the housing is assembled. However, if the fan blade or the motor is damaged during transportation, or during later use, if it is necessary to replace the fan blade or the motor, then the fan blade and the motor need to be removed one by one, and reassembled after replacement.

[0003] The existing motor and fan blade are two independent parts, but their structural relationship is very close, and operations such as installation, disassembly, replacement, and maintenance are very troublesome. Summary of the Invention

[0004] In view of this, the present application provides a neck-mounted fan, in which the fan blade and the motor with a close relationship are first installed together through a mounting member to form a fan assembly. The fan assembly can be flexibly installed, disassembled, replaced, maintained, cleaned, transported, etc. The structure is integrated, the assembly efficiency is improved, and quality control is facilitated.

[0005] The present application provides a neck-mounted fan, including: a housing including an air inlet and an air outlet communicating with the inside of the housing; a fan assembly received in the housing, the fan assembly sucking air flow from the air inlet into the housing and then blowing it out from the air outlet; wherein, the fan assembly includes a mounting member, a fan blade and a motor, and after the mounting member, the fan blade and the motor are nested and fixed together, the mounting member is fixedly connected to the housing.

[0006] Further, the mounting member includes a substrate and a hollow shaft cylinder protruding and extending from the substrate. The motor includes a stator assembly and a rotor assembly. The rotor assembly includes a rotating shaft, a bearing and a magnetic ring. The rotating shaft and the bearing are inserted into the shaft cylinder, the bearing is disposed between the rotating shaft and the shaft cylinder, the stator assembly is disposed on the radial outer side of the shaft cylinder, and the magnetic ring is disposed on the radial outer side of the stator assembly.

[0007] Further, the rotating shaft and the magnetic ring are first fixed to the fan blade, the rotating shaft is inserted into the bearing, and at the same time, the magnetic ring and the fan blade are sleeved outside the stator assembly.

[0008] Further, the housing includes a joint portion. The joint portion includes a first part, a second part and a plurality of connecting portions. The plurality of connecting portions connect the first part and the second part, and a plurality of the air inlets are provided between the plurality of connecting portions; the mounting member is fixedly connected to the first part, and the cross-sectional area of the mounting member is smaller than the cross-sectional area of the first part.

[0009] Further, the wind blade is a centrifugal wind blade, which includes a wheel housing, a blade part and a plurality of arm parts. The plurality of arm parts connect the wheel housing and the blade part, and ventilation openings are formed between the plurality of arm parts. The wheel housing covers the motor, and the magnetic ring is arranged on the radial inner side of the wheel housing.

[0010] Further, the difference between the cross-sectional diameter of the wheel housing and the cross-sectional diameter of the first part is less than 5 mm. The inner edge diameter of the blade part is smaller than the inner edge diameter of the second part, and the outer edge diameter of the blade part is larger than the inner edge diameter of the second part.

[0011] Further, the housing includes an air inlet plate, which is oppositely arranged with respect to the joint part, and a plurality of air inlets are provided on the air inlet plate.

[0012] Further, the first part includes a bottom wall and a side wall connected to each other. The bottom wall and the side wall are concave towards the fan assembly, and the mounting member is received in the first part; the bottom wall and the side wall are convex away from the fan assembly, and the surface of the side wall away from the receiving cavity is an arc-shaped inclined surface.

[0013] Further, the housing includes a joint part, which fixes the mounting member, thereby fixing the fan assembly. The wind blade is an axial-flow wind blade or a mixed-flow wind blade. The wind blade includes a wheel housing and a blade part. The blade part is directly connected to the outer side surface of the wheel housing. The motor is received on the radial inner side of the wheel housing, or the motor is arranged between the wheel housing and the mounting member; the housing includes an air inlet plate, and a plurality of air inlets are provided on the air inlet plate. Airflow enters the housing from the air inlets, flows through the wind blade and the mounting member, and finally blows out from the air outlet.

[0014] The present application also provides a fan assembly for a neck-mounted fan, including: a mounting member, a wind blade and a motor. The neck-mounted fan includes a housing. After the mounting member, the wind blade and the motor are nested and fixed together, the mounting member is fixedly connected to the housing. At least two fan assemblies are provided in the housing, and a power supply member is also provided in the housing. The power supply member is electrically connected to the fan assembly.

[0015] Compared with the prior art, the neck-mounted fan of the present application has the following beneficial effects: The wind blade and the motor with a close relationship are first installed together through the mounting member to form the fan assembly. The fan assembly can be flexibly installed, disassembled, replaced, repaired, cleaned, transported, etc. The structure is integrated, the assembly efficiency is improved, and the quality control is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a partial exploded view of a neck-mounted fan according to an embodiment of the present application;

[0017] Figure 2 is a perspective view of a fan assembly according to an embodiment of the present application;

[0018] Figure 3 is a partial cross-sectional view of a neck fan according to an embodiment of the present application;

[0019] Figure 4 is a partial cross-sectional view of the neck fan from another angle according to an embodiment of the present application;

[0020] Figure 5 is an exploded view of a neck fan according to another embodiment of the present application;

[0021] Figure 6 is a perspective view of a fan assembly according to another embodiment of the present application. Detailed Embodiments

[0022] For better understanding of the purpose, structure, features, and functions of the present application, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] It should be noted that 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 intermediate element present at the same time.

[0024] In the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0025] In the description of the present application, the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0026] In one embodiment, as Figure 1 shown, is a schematic diagram of a neck fan of the present application. The neck fan includes a housing 1 and a fan assembly 2. The housing 1 includes an air inlet 11 and an air outlet 12 that communicate with the inside of the housing 1. The fan assembly 2 is housed in the housing 1. The fan assembly 2 sucks air flow into the housing 1 from the air inlet 11 and then blows it out from the air outlet 12. Among them, as Figure 1 and Figure 2As shown, the fan assembly 2 includes a mounting member 3, a blade 4, and a motor 5. After the mounting member 3, the blade 4, and the motor 5 are nested and fixed together, the mounting member 3 is fixedly connected to the housing 1. The blade 4 and the motor 5 with a close relationship are first installed together through the mounting member 3 to form the fan assembly 2. The fan assembly 2 can be flexibly installed, disassembled, replaced, repaired, cleaned, transported, etc. The structure is integrated, improving the assembly efficiency and facilitating quality control.

[0027] It should be understood that the way the mounting member 3 fixes the housing 1 includes, but is not limited to, one or more of fixing methods such as snap fixing, screw fixing, and adhesive fixing. In this embodiment, the mounting member 3 is fixed to the housing 1 by snaps and screws to ensure the stability of the fan assembly 2.

[0028] In one embodiment, as Figures 2 to 4 shown, the mounting member 3 includes a base plate 31 and a hollow shaft cylinder 32 protruding and extending from the base plate 31. The motor 5 includes a stator assembly 51 and a rotor assembly 52. The rotor assembly 52 includes a rotating shaft 521, a bearing 522, and a magnetic ring 523. The rotating shaft 521 and the bearing 522 are inserted into the shaft cylinder 32. The bearing 522 is disposed between the rotating shaft 521 and the shaft cylinder 32. The stator assembly 51 is disposed radially outside the shaft cylinder 32. The magnetic ring 523 is disposed radially outside the stator assembly 51, and the magnetic ring 523 is disposed radially inside the blade 4.

[0029] As Figures 2 to 4 shown, the rotating shaft 521 and the magnetic ring 523 are first fixed to the blade 4. The blade 4 includes a wheel housing 41. The rotating shaft 521 is fixed to the center of the wheel housing 41. The magnetic ring 523 is fixed to the radial inside of the wheel housing 41. The rotating shaft 521 is inserted into the bearing 522. At the same time, the magnetic ring 523 and the blade 4 are sleeved outside the stator assembly 51. It should be understood that after the rotating shaft 521 is inserted into the bearing 522, if no other problems are found upon inspection, a limiting member 524 can be installed at one end of the rotating shaft 521 facing away from the blade 4 on the side of the shaft cylinder 32 facing away from the blade 4 to prevent the blade 4 and the rotating shaft 521 from disengaging from the bearing 522.

[0030] In one embodiment, as Figures 2 to 4As shown, the housing 1 includes a coupling portion 13. The coupling portion 13 includes a first part 131, a second part 132, and a plurality of connecting portions 133. The plurality of connecting portions 133 connect the first part 131 and the second part 132, and a plurality of air inlets 11 are provided between the plurality of connecting portions 133. The mounting member 3 is fixedly connected to the first part 131, and the cross-sectional area of the mounting member 3 is smaller than the cross-sectional area of the first part 131. Thus, the air entering from the air inlets 11 between the connecting portions 133 will not be blocked by the mounting member 3 and can smoothly flow into the interior of the housing 1.

[0031] In one embodiment, as Figures 2 to 4 shown, the impeller 4 is a centrifugal impeller. The impeller 4 includes a hub 41, a blade portion 42, and a plurality of arm portions 43. The plurality of arm portions 43 connect the hub 41 and the blade portion 42, and a ventilation opening 431 is formed between the plurality of arm portions 43. The hub 41 covers the motor 5, and the magnetic ring 523 is disposed on the radial inner side of the hub 41. By using the internal space of the hub 41 of the impeller 4, the structure of the motor 5 is reasonably accommodated, making the overall structure compact and reasonable, and the overall volume small.

[0032] In one embodiment, as Figures 2 to 4 shown, the cross-sectional diameter of the hub 41 is less than 5 mm smaller than the cross-sectional diameter of the first part 131. The difference between the cross-sectional diameter of the hub 41 and the cross-sectional diameter of the first part 131 is relatively small. Thus, the air entering from the air inlets 11 between the connecting portions 133 can smoothly flow to the outer surface of the hub 41. The inner edge diameter of the blade portion 42 is smaller than the inner edge diameter of the second part 132, and the outer edge diameter of the blade portion 42 is larger than the inner edge diameter of the second part 132. Then, at least a part of the axial projection of the blade portion 42 is located on the air inlets 11 of the connecting portions 133.

[0033] In one embodiment, as Figures 2 to 4 shown, the first part 131 includes a bottom wall 1311 and a side wall 1312 connected to each other. The bottom wall 1311 and the side wall 1312 are concave toward the fan assembly 2, and the mounting member 3 is received in the first part 131; the bottom wall 1311 and the side wall 1312 are convex away from the fan assembly 2, and the surface of the side wall 1312 away from the fan assembly 2 is an arc-shaped inclined surface, guiding the air flow to smoothly flow into the air inlets 11 of the connecting portions 133.

[0034] In one embodiment, as Figures 2 to 4As shown, the blade part 42 includes two axially distributed layers of blades. The housing 1 includes an air inlet plate 14. The air inlet plate 14 is disposed opposite to the joint part 13. The air inlet plate 14 is also provided with a plurality of the air inlets 11. Then, air can enter from both opposite sides of the wind blade 4 in the axial direction. Most of the air flow entering from the air inlet 11 of the connecting part 133 flows into one layer of blades close to the side of the connecting part 133; most of the air flow entering from the air inlet 11 of the air inlet plate 14 flows into the other layer of blades close to the side of the air inlet plate 14. It should be understood that the ventilation opening 431 can buffer the air flows colliding from both sides and reduce the impact of the air flow on the wind blade 4 itself. In another embodiment, it may also be that only the connecting parts 133 are provided with the air inlets 11. Then, a part of the air flow entering from the air inlet 11 of the connecting part 133 flows into one layer of blades after flowing between the wheel housing 41 and the blade part 42; a part of the air flow entering from the air inlet 11 of the connecting part 133 flows into the other layer of blades after flowing between the wheel housing 41 and the blade part 42 and passing through the ventilation opening 431. In other embodiments, the blade part 42 may also be provided with only one layer of blades.

[0035] It should be understood that, in order to prevent dust, hair, and impurities from entering the housing 1, covers (not labeled) can be provided outside the air inlets 11 of the connecting part 133 and outside the air inlets 11 of the air inlet plate 14.

[0036] In one embodiment, as Figure 5 and Figure 6 shown, the housing 1 includes a joint part 13. The joint part 13 fixes the mounting member 3, thereby fixing the fan assembly 2. The wind blade 4 is an axial flow wind blade or a mixed flow wind blade. The wind blade 4 includes a wheel housing 41 and a blade part 42. The blade part 42 is directly connected to the outer side surface of the wheel housing 41. The motor 5 is received inside the wheel housing 41 in the radial direction. The housing 1 includes an air inlet plate 14. The air inlet plate 14 is provided with a plurality of the air inlets 11. Air flows into the housing 1 from the air inlets 11, flows through the wind blade 4 and the mounting member 3, and finally blows out from the air outlet 12. In other embodiments, the motor 5 may also be disposed between the wheel housing 41 and the mounting member 3.

[0037] As Figure 1 and Figure 5As shown in the figure, two blower assemblies 2 are provided inside the housing 1. The housing 1 is generally in a "C" shape. The two blower assemblies 2 are symmetrically arranged inside the housing 1, and the blower assemblies 2 are arranged at positions close to the ends of the housing 1. A power supply member 6 is also provided inside the housing 1. The power supply member 6 is electrically connected to the blower assemblies 2 to supply power to the blower assemblies 2 and drive the blower assemblies 2 to operate. Of course, in other embodiments, the blower assemblies 2 may also be arranged at positions close to the middle of the housing 1. In other embodiments, more than two blower assemblies 2 may also be provided inside the housing 1.

[0038] The above detailed description is only for the description of the preferred embodiments of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent technical changes made by using the content of this creative specification and drawings are included in the patent scope of this creation.

Claims

1. A neck hanging fan, characterized in that: include: A housing, comprising an air inlet and an air outlet communicated with the interior of the housing; A fan assembly is housed in the housing, and the fan assembly sucks air into the housing from the air inlet and blows air out from the air outlet; Wherein, the fan assembly includes a mounting part, a fan blade and a motor. After the mounting part, the fan blade and the motor are nested and fixed, the mounting part is fixedly connected to the shell.

2. The neck hanging fan according to claim 1, characterized in that: The mounting member includes a base plate and a hollow shaft cylinder protruding from the base plate, the motor includes a stator assembly and a rotor assembly, the rotor assembly includes a rotating shaft, a bearing and a magnetic ring, the rotating shaft and the bearing are inserted into the shaft cylinder, the bearing is arranged between the rotating shaft and the shaft cylinder, the stator assembly is arranged on the radial outside of the shaft cylinder, the magnetic ring is arranged on the radial outside of the stator assembly, and the magnetic ring is arranged on the radial inside of the fan blade.

3. The neck hanging fan according to claim 2, characterized in that: The rotating shaft and the magnetic ring are first fixed to the fan blades, the rotating shaft is inserted into the bearing, and the magnetic ring and the fan blades are sleeved outside the stator assembly.

4. The neck hanging fan according to claim 2, characterized in that: The shell includes a combining portion, which includes a first portion, a second portion and a plurality of connecting portions, wherein the plurality of connecting portions connect the first portion and the second portion, and a plurality of air inlets are provided between the plurality of connecting portions; the mounting member is fixedly connected to the first portion, and a cross-sectional area of ​​the mounting member is smaller than a cross-sectional area of ​​the first portion.

5. The neck hanging fan according to claim 4, characterized in that: The fan blade is a centrifugal fan blade, which includes a wheel shell, a blade portion and a plurality of arm portions. The plurality of arm portions connect the wheel shell and the blade portion, and vents are formed between the plurality of arm portions. The wheel shell covers the motor, and the magnetic ring is arranged on the radial inner side of the wheel shell.

6. The neck hanging fan according to claim 5, characterized in that: The cross-sectional diameter of the wheel shell differs from that of the first portion by less than 5 mm, the inner edge diameter of the blade portion is smaller than the inner edge diameter of the second portion, and the outer edge diameter of the blade portion is larger than the inner edge diameter of the second portion.

7. The neck hanging fan according to claim 5, characterized in that: The shell includes an air inlet plate, which is arranged opposite to the connecting portion and is provided with a plurality of air inlets.

8. The neck hanging fan according to claim 4, characterized in that: The first part includes a bottom wall and side walls connected to each other, the bottom wall and the side walls are recessed toward the fan assembly, and the mounting member is accommodated in the first part; the bottom wall and the side walls are convex facing away from the fan assembly, and the surface of the side wall facing away from the fan assembly is an arc-shaped slope.

9. The neck hanging fan according to claim 2, characterized in that: The shell includes a joint portion, which fixes the mounting member, thereby fixing the fan assembly. The fan blade is an axial flow fan blade or a mixed flow fan blade. The fan blade includes a wheel shell and a blade portion. The blade portion is directly connected to the outer side of the wheel shell. The motor is accommodated on the radial inner side of the wheel shell, or the motor is arranged between the wheel shell and the mounting member; the shell includes an air inlet plate, and the air inlet plate is provided with a plurality of air inlets. The airflow enters the shell from the air inlets, flows through the fan blades and the mounting member, and is finally blown out from the air outlet.

10. A fan assembly for a neck hanging fan, characterized in that: include: A mounting part, a fan blade and a motor, the neck hanging fan comprises a shell, after the mounting part, the fan blade and the motor are nested and fixed, the mounting part is fixedly connected to the shell, at least two fan assemblies are arranged in the shell, a power supply is also arranged in the shell, and the power supply is electrically connected to the fan assembly.

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