A fan assembly and a portable temperature conditioning device

Abstract

The application provides a fan assembly and a portable temperature adjusting device. The fan assembly comprises: a fan blade; a motor in driving connection with the fan blade, the motor comprising a stator, a rotor rotatable relative to the stator, and a rotating shaft, the rotor is arranged opposite to the stator, the rotor is connected with the rotating shaft, and one end of the rotating shaft is connected with the fan blade; a shaft sleeve integrated in the motor, the rotating shaft is arranged in the shaft sleeve, a bearing is further arranged in the shaft sleeve, the bearing is sleeved on the rotating shaft and located between the rotating shaft and the shaft sleeve; and a base, the base is formed with an accommodating space, the motor and the shaft sleeve are arranged in the accommodating space, the base is connected with the shaft sleeve, and the base and the shaft sleeve are formed separately. The fan assembly in the application integrates the shaft sleeve in the motor body, and the shaft sleeve and the base are formed separately, which significantly improves the coaxiality of each bearing mounting hole in the shaft sleeve, thereby improving the setting stability and rotating stability of the motor in the fan assembly.

Description

[0001] This application claims priority to Chinese patent application No. 202521568293.3, filed on July 24, 2025, entitled “A Fan Assembly and a Portable Temperature Control Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of electronic equipment technology, and in particular to a fan assembly and a portable temperature control device. Background Technology

[0003] In the sweltering summer, electric fans and air conditioners are the most commonly used cooling devices. However, these devices can only be used indoors and are not portable. When people go out or rest outdoors, they can only rely on fans or natural wind to cool themselves down, but often there is no natural wind, and using a fan can be tiring. To address this, various portable temperature-regulating devices have appeared on the market, allowing users to use them outdoors by hand or by hanging them around their necks for cooling.

[0004] In portable temperature control devices of related technologies, a fan assembly is included. The motor shaft of the fan assembly passes through a bushing, and a bearing is fitted into the bushing to ensure the stability of the shaft's rotation. However, in these related technologies, the coaxiality deviation between the various bearing mounting holes in the bushing is relatively large, which can lead to unstable motor rotation. This, in turn, can cause quality problems in portable temperature control devices such as excessive noise, reduced product lifespan, and rapid deterioration of the user experience.

[0005] Therefore, how to reduce the technical problem of unstable motor rotation in portable temperature control devices has become an urgent issue to be addressed. Utility Model Content

[0006] This invention provides a fan assembly and a portable temperature control device to solve the technical problem of reducing motor instability in portable temperature control devices.

[0007] This utility model is implemented as follows: It provides a fan assembly and a portable temperature control device. The assembly includes: a fan blade; a motor driven and connected to the fan blade, the motor comprising a stator, a rotor rotatable relative to the stator, and a rotating shaft, the rotor being disposed opposite to the stator and connected to the rotating shaft, one end of the rotating shaft being connected to the fan blade; a bushing integrated into the motor, the rotating shaft passing through the bushing, a bearing also provided within the bushing, the bearing being sleeved on the rotating shaft and located between the rotating shaft and the bushing; and a base forming an accommodating space, the motor and the bushing being disposed within the accommodating space, the base being connected to the bushing, and the base and the bushing being separately formed.

[0008] Furthermore, the bushing includes a first connecting portion and a second connecting portion connected to the first connecting portion, the rotating shaft passes through the first connecting portion, the first connecting portion is provided with a bearing sleeved on the rotating shaft, and the second connecting portion includes at least one first mounting hole; the base includes at least one second mounting hole, the second mounting hole being correspondingly provided with the first mounting hole; the fan assembly further includes at least one connector, the connector passing through the first mounting hole and the second mounting hole.

[0009] Furthermore, there are multiple second mounting holes, the second connecting part is sleeved on the first connecting part, and the multiple second mounting holes are arranged around the first connecting part.

[0010] Furthermore, the number of the second mounting holes is two to four.

[0011] Furthermore, the number of the second mounting holes is one, and the second connecting part is located at the end of the first connecting part facing the base.

[0012] Furthermore, a buffer is provided between the first mounting hole and the second mounting hole, and the buffer is sleeved on the connector.

[0013] Furthermore, the connector is a screw, bolt, rivet, or pin.

[0014] Furthermore, in the height direction of the fan assembly, the second connecting portion is spaced apart from the rotor, and the second mounting hole and the rotor form a wiring space in the height direction of the fan assembly.

[0015] Furthermore, the fan blade includes a hub and a plurality of blades connected to the surface of the hub, the shaft is sleeved inside the hub, the total outer diameter of the fan blade is a first outer diameter, the outer diameter of the hub is a second outer diameter, and the ratio of the second outer diameter to the first outer diameter is 0.4 to 0.6.

[0016] On the other hand, the present invention also provides a portable temperature control device, which includes the fan assembly described in any of the above claims.

[0017] The fan assembly of this utility model significantly improves the coaxiality between the various bearing mounting holes in the bushing by integrating the bushing into the motor body and separately molding the bushing and the base. This improves the stability of the motor in the fan assembly and its rotation, thereby reducing the noise of the portable temperature control device, increasing its service life, and enhancing the user experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a fan assembly provided in one embodiment of the present invention from one angle; Figure 2 This is an exploded structural diagram of a fan assembly provided in one embodiment of the present invention; Figure 3 This is a perspective view of the bearing arrangement in a fan assembly according to an embodiment of the present invention; Figure 4 This is an exploded structural diagram of the base and motor in a fan assembly provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of the integrated structure of the motor and bushing in a fan assembly provided in one embodiment of the present invention; Figure 6 This is an exploded structural diagram of the motor and bushing in a fan assembly provided in one embodiment of the present invention; Figure 7 This is a schematic diagram of the integrated structure of the motor and bushing in a fan assembly provided in another embodiment of the present invention; Figure 8 This is an exploded view of the motor in a fan assembly provided in another embodiment of the present invention; Figure 9 This is a schematic diagram of the fan blade structure in a fan assembly provided in one embodiment of the present invention; Figure 10 This is a schematic diagram of the fan blade structure in a fan assembly provided in another embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of a portable temperature control device provided in one embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a portable temperature control device provided in another embodiment of the present invention.

[0020] Key component symbols: 100, Fan assembly; 200, Fan housing; 300, Handle; 400, Wearing bracket; 410, Neckband; 420, Handle part; 10, Fan blade; 20, Motor; 30, Bushing; 40, Base; 50, Accommodation space; 60, Connector; 70, Buffer; 80, Bearing; 90, Cable routing space; 11, Hub; 12, Blade; 21, Stator; 22, Rotor; 23, Shaft; 31, First connecting part; 32, Second connecting part; 321, First mounting hole; 401, Second mounting hole; D1, First outer diameter; D2, Second outer diameter. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] 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 one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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 utility model according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] The accompanying drawings provided in this application are schematic diagrams, and some elements are not shown in the drawings. Their purpose is to clearly describe the technical solution and highlight the key features of the utility model. They are not intended to limit the technical solution to exclude these unshown elements. That is to say, the drawings are merely examples and do not represent a limitation on the specific form of the fan assembly 100.

[0028] like Figures 1 to 10 As shown, the fan assembly 100 provided in this embodiment of the present invention includes: fan blades 10, a motor 20, a bushing 30, and a base 40. The motor 20 is driven by the fan blades 10 and is used to drive the fan blades 10 to rotate. The motor 20 includes a stator 21, a rotor 22, and a shaft 23. The stator 21 generates a rotating magnetic field when energized, causing the rotor 22 to rotate under the influence of the stator 21's magnetic field. The shaft 23 is connected to the rotor 22 and can rotate under the drive of the rotor 22, transmitting torque. One end of the shaft 23 is connected to the fan blades 10, driving the fan blades 10 to rotate, so that when the rotor 22 rotates, the rotor 22 can drive the fan blades 10 to rotate via the shaft 23. The bushing 30 is integrated into the motor 20, and the shaft 23 passes through the bushing 30. Bearings 80 are also provided inside the bushing 30, and each bearing 80 is sleeved on the shaft 23, with the bearings 80 located between the shaft 23 and the bushing 30. The number of bearings 80 can be one or more.

[0029] The base 40 forms an accommodating space 50, within which the motor 20 and bushing 30 are housed. The base 40 is connected to the bushing 30, and the base 40 and bushing 30 are also separately formed. The base 40 provides mechanical support and a mounting base for the entire fan assembly 100 (motor 20, bushing 30, internal wiring, etc.). The base 40 also forms an accommodating space 50 to protect internal components from external environmental influences (dust, foreign objects) and provides a certain degree of safety protection.

[0030] Thus, the fan assembly 100 of this utility model, by integrating the bushing 30 into the motor 20 body and separately molding the bushing 30 and the base 40, significantly improves the coaxiality between the various bearing mounting holes within the bushing 30. It can be understood that integrating the bushing 30 into the motor 20 allows the holes for mounting the bearings 80 within the bushing 30 to be precisely machined during the manufacturing stage, using the core components such as the motor 20's shaft 23 as a reference. This ensures the precision of the bearing mounting holes within the bushing 30 and improves the coaxiality between the various bearing mounting holes within the bushing 30. Simultaneously, the separate molding of the bushing 30 and the base 40 allows for separate manufacturing of the bushing 30 and the base 40, improving the precision of the bushing 30's manufacturing. This enables the holes for mounting the bearings 80 within the bushing 30 to be individually machined with high precision (such as precision turning or grinding), ensuring the roundness, cylindricity, and dimensional tolerances of the bushing 30's inner holes, and improving the coaxiality between the various bearings 80. In addition, the separate molding of the bushing 30 and the base 40 effectively isolates the bushing 30 from the shrinkage, deformation and mounting surface errors that may occur during the molding or processing of the base 40. This avoids the shrinkage, deformation or processing errors of the base 40 during molding from directly affecting the accuracy of the bushing 30, which would make it difficult to ensure strict concentricity of the bearing mounting holes, as is the case in traditional one-piece structures.

[0031] Therefore, the fan assembly 100 of this invention, by integrating the bushing 30 into the motor 20 body and separately molding the bushing 30 and the base 40, significantly improves the coaxiality between the various bearing mounting holes within the bushing 30. This enhances the stability of the motor 20's setup and rotation within the fan assembly 100, thereby reducing noise, extending the lifespan of the portable temperature control device, and improving the user experience. Furthermore, during maintenance of the fan assembly 100, both the bushing 30 and the base 40 can be replaced independently. If the bearing 80, the support portion of the shaft 23, or the base 40 is damaged, it is not necessary to replace the entire base 40; only the individual structure needs to be replaced, significantly reducing subsequent maintenance costs.

[0032] It is understood that, in this application, the bearing mounting hole refers to the hole position inside the bushing 30 for mounting the bearing 80. Each time a bearing 80 is installed, holes are formed at both ends of the bearing 80 inside the bushing 30, and installing one bearing 80 can create two bearing mounting holes.

[0033] Specifically, the bushing 30 and the motor 20 can be integrated by direct die casting or CNC machining.

[0034] Specifically, the motor 20 can be an outer rotor 22 motor 20 with the rotor 22 surrounding the periphery of the stator 21, or the motor 20 can be an outer stator 21 motor 20 with the rotor 22 surrounding the periphery of the stator 21. In this embodiment of the present invention, the motor 20 is described as an outer stator 21 motor 20 with the rotor 22 surrounding the periphery of the stator 21.

[0035] like Figure 5 As shown, in some embodiments, the bushing 30 and the motor 20 are integrally formed. This can further improve the fit between the motor 20 shaft 23 and the bushing 30, and further improve the coaxiality between the various bearing mounting holes within the bushing 30.

[0036] In one possible implementation, the bushing 30 is made of metal. By making the bushing 30 a metal component, the precision of its manufacturing can be improved, thereby enhancing the coaxiality of the bearing mounting holes within the bushing 30. This further improves the stability of the motor 20 within the fan assembly 100, reducing excessive noise in the portable temperature control device, extending its lifespan, and improving the user experience. It is understood that metal possesses high rigidity and excellent resistance to deformation. By making the bushing 30 a metal component, it is less prone to elastic deformation during processing, clamping, and assembly, thus better maintaining shape accuracy and improving the coaxiality of the bearing mounting holes within the bushing 30.

[0037] For example, the bushing 30 can be an aluminum alloy bushing 30, a stainless steel bushing 30, a copper bushing 30, an aluminum bushing 30, a copper alloy bushing 30, etc., and is not limited here.

[0038] like Figure 2 as well as Figures 5 to 8As shown, in one possible embodiment, the bushing 30 includes a first connecting portion 31 and a second connecting portion 32 connected to the first connecting portion 31. The rotating shaft 23 passes through the first connecting portion 31, and a bearing 80 sleeved on the rotating shaft 23 is provided in the first connecting portion 31. The second connecting portion 32 includes at least one first mounting hole 321. The base 40 includes at least one second mounting hole 401, which is correspondingly provided with the first mounting hole 321. The fan assembly 100 also includes at least one connector 60, which passes through the first mounting hole 321 and the second mounting hole 401. Thus, by providing a connector 60 that passes through the first mounting hole 321 of the bushing 30 and the second connecting hole of the base 40, the fan assembly 100 of this utility model can avoid connecting the motor 20 and the base 40 through interference fit. This avoids squeezing the bushing 30 during the interference fit process, thereby further reducing the coaxiality deviation of the bushing 30 and improving the coaxiality between the various bearing mounting holes. This enhances the stability of the motor 20 in the fan assembly 100 and its rotational stability, thereby reducing the noise of the portable temperature control device, increasing its service life, and improving the user experience.

[0039] Understandably, in related technologies, the connection between the motor 20 and the base 40 is achieved through interference fit. The interference fit assembly process compresses the bushing 30, which can cause arbitrary deformation or displacement of the mounting holes of the bearing 80 inside the bushing 30, further compromising the coaxiality of the mounting holes of the various bearings in the bushing 30.

[0040] In this application, the motor 20 and the base 40 are connected by a connector 60 through a mounting hole, which avoids the situation where the bushing 30 would be squeezed due to the interference fit connection method. This further improves the coaxiality between the mounting holes of each bearing in the bushing 30, thereby improving the setting stability and rotational stability of the motor 20 in the fan assembly 100. This can reduce the noise of the portable temperature control device, improve the service life of the portable temperature control device, and enhance the user experience of the portable temperature control device.

[0041] Secondly, the connection between the motor 20 and the base 40 via the mounting hole through the connector 60 allows for fine-tuning of the position of the bushing 30 relative to the base 40 (even a very small translation or angular adjustment) before the connector 60 is finally fixed. This compensates for minor deviations in the manufacturing or installation process caused by various components, improving the fit between the bushing 30 and the shaft 23 or other components of the motor 20. Furthermore, the connection via the connector 60 facilitates the installation of the motor 20 and the base 40, making the connection detachable and relatively simple. This facilitates subsequent maintenance, replacement, or adjustment without the high risks and difficulties of destructive disassembly or interference fit separation, significantly improving the maintainability and service life of the fan assembly 100.

[0042] Specifically, the bushing 30 includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 is the main body of the bushing 30, and the rotating shaft 23 passes through the first connecting portion 31. The second connecting portion 32 is the connecting portion of the bushing 30, and the second connecting portion 32 is provided with at least one first mounting hole 321. The base 40 is provided with at least one second mounting hole 401. When connecting the motor 20 to the base 40, the connecting member 60 can pass through the first mounting hole 321 and the second mounting hole 401 to connect the motor 20 to the base 40. Furthermore, the first mounting hole 321 and the second mounting hole 401 are correspondingly arranged, so that when the bushing 30 is placed in a predetermined position on the base 40, the first mounting hole 321 on the bushing 30 should be accurately aligned with one of the second mounting holes 401 on the base 40.

[0043] Furthermore, the number of the first mounting hole 321, the second mounting hole 401, and the connector 60 can be the same, and the first mounting hole 321, the second mounting hole 401, and the connector 60 are correspondingly arranged. The connector 60 connects the corresponding first mounting hole 321 and the second mounting hole 401 by passing through, thereby firmly fixing the bushing 30 and the motor 20 to the base 40.

[0044] For example, the connector 60 may be a screw, bolt, rivet, pin, etc.; the first mounting hole 321 and the second mounting hole 401 may be threaded holes with threaded structures or smooth holes without threaded structures, without limitation.

[0045] like Figure 2 as well as Figures 5 to 8As shown, in one possible implementation, there are multiple second mounting holes 401. The second connecting portion 32 is sleeved on the first connecting portion 31, and the multiple second mounting holes 401 are arranged around the first connecting portion 31. Thus, by having the second connecting portion 32 sleeved on the first connecting portion 31 and the multiple second mounting holes 401 arranged around the first connecting portion 31, the contact area between the bushing 30 and the base 40 can be increased, thereby improving the installation stability of the bushing 30. This, in turn, improves the installation stability of the motor 20 in the fan assembly 100, extends the service life of the portable temperature control device, and enhances the user experience. Furthermore, the bushing 30 and the base 40 are connected by multiple connectors 60, further increasing the connection stability between the bushing 30 and the base 40, thereby further improving the installation stability of the motor 20 in the fan assembly 100.

[0046] Specifically, the number of second mounting holes 401 can be set to multiple, and correspondingly, the number of connectors 60 and first mounting holes 321 can also be set to multiple. This improves the connection stability between the bushing 30 and the base 40, and consequently improves the stability of the motor 20 in the fan assembly 100.

[0047] Furthermore, the second connecting part 32 is sleeved on the first connecting part 31, and the second connecting part 32 is sleeved on the outside of the first connecting part 31 in an annular or cylindrical structure. This allows a double-layer cylindrical reinforcing structure to be formed between the first connecting part 31 and the second connecting part 32, which can effectively improve the ability of the rotating shaft 23 and bearing 80 located in the first connecting part 31 to resist external impacts, thereby improving the stability of the motor 20 in the fan assembly 100.

[0048] like Figure 5 As shown, in one possible implementation, the second connecting portion 32 is spaced apart from the rotor 22 in the height direction of the fan assembly 100, and the second connecting portion 32 and the rotor 22 form a wiring space 90 in the height direction of the fan assembly 100. Thus, by positioning the second connecting portion 32 around the end of the first connecting portion 31 facing the base 40, sufficient wiring space 90 can be reserved for the motor 20, optimizing the internal spatial layout of the fan assembly 100, facilitating centralized wiring and fixing, and making the structural arrangement of the fan assembly 100 more rational.

[0049] like Figure 2 as well as Figures 5 to 8As shown, the second connecting portion 32 is further arranged around the end of the first connecting portion 31 facing the base 40. It is understood that in this embodiment, the second connecting portion 32 is specifically arranged around the end of the first connecting portion 31 facing the base 40 so that the second connecting portion 32 does not obstruct the wiring of the motor 20. In the thickness direction of the fan assembly 100, a sufficiently wide physical isolation zone can be formed between the second connecting portion 32 and the rotor 22, avoiding direct contact between wires or cables and rotating components (such as the rotor 22), reducing wire wear or breakage caused by friction, compression, or vibration, thereby extending wire life and improving safety. Moreover, the arrangement of the second connecting portion 32 around the end of the first connecting portion 31 facing the base 40 allows the motor 20 to reserve sufficient wiring space 90, fully utilizing the compact design of the fan assembly 100, avoiding wiring from occupying other functional areas (such as airflow channels), and improving the overall reliability of the fan assembly 100.

[0050] like Figure 5 and Figure 6 As shown, in one possible implementation, the number of second mounting holes 401 is two to four. Exemplarily, the number of second mounting holes 401 can be two, three, or four.

[0051] It is understandable that increasing the number of second mounting holes 401 can indeed increase the contact area between the bushing 30 and the base 40, increase the connection stability between the bushing 30 and the base 40, and thus improve the installation stability of the motor 20 in the fan assembly 100. However, increasing the number of second mounting holes 401 will correspondingly increase the manufacturing cost and difficulty of the bushing 30 and the base 40, as well as the installation difficulty and steps of the bushing 30 and the motor 20. When the number of second mounting holes 401 is greater than 4, it will lead to excessively high installation difficulty and manufacturing cost of the bushing 30. Therefore, by setting the number of second mounting holes 401 to 2 to 4, it is possible to ensure that the motor 20 and the bushing 30 can be firmly installed on the base 40 while reducing the installation difficulty and manufacturing cost of the bushing 30, thus avoiding excessively high installation difficulty and manufacturing cost of the motor 20 and the bushing 30.

[0052] Furthermore, the number of second mounting holes 401 is 2 to 4, the number of first mounting holes 321 is 2 to 4, and the number of connectors 60 is 2 to 4. It can be understood that increasing the number of connectors 60 will increase the weight of the fan assembly 100, which in turn will increase the number of portable temperature control devices. At the same time, an excessive number of second mounting holes 401, first mounting holes 321, and connectors 60 will correspondingly increase the manufacturing cost and difficulty of the bushing 30 and base 40, as well as the installation difficulty and steps of the bushing 30 and motor 20. Therefore, by setting the number of first mounting holes 321, second mounting holes 401, and connectors 60 to 2 to 4, it is possible to ensure that the motor 20 and bushing 30 can be securely mounted on the base 40 while reducing the installation difficulty and manufacturing cost of the motor 20 and bushing 30, thus avoiding excessively high installation difficulty and manufacturing costs for the motor 20 and bushing 30.

[0053] like Figure 7 As shown, in one possible implementation, there is one second mounting hole 401, and the second connecting part 32 is located at the end of the first connecting part 31 facing the base 40. Thus, by setting the number of second mounting holes 401 to one, the motor 20 and the bushing 30 can be securely mounted while reducing the difficulty and cost of mounting and manufacturing the bushing 30.

[0054] It can be understood that the bushing 30 and the base 40 can also be connected via a single hole. The second connecting part 32 has a second mounting hole 401, and the connection is made via a single connector 60. This allows for a stable connection between the motor 20 and the base 40 while reducing the number of connectors 60. Furthermore, only one mounting hole needs to be created when manufacturing the bushing 30 and the base 40, thus reducing the manufacturing cost of the fan assembly 100. Compared to a structure with multiple mounting holes on the base 40 and bushing 30, by using only one first mounting hole 321 and one second mounting hole 401, the motor 20 and base 40 can be installed simply by aligning one set of the first mounting holes 321 and the second mounting hole 40. This significantly reduces the installation cost of the fan assembly 100 and improves the ease of installation and portability of the fan assembly.

[0055] Furthermore, by providing the second connecting part 32 at the end of the first connecting part 31 facing the base 40, the second connecting part 32 can have the dual functions of limiting the bearing 80 and connecting with the base 40.

[0056] In one possible implementation, a buffer 70 is provided between the first mounting hole 321 and the second mounting hole 401, and the buffer 70 is sleeved on the connector 60. Thus, the buffer 70 between the first mounting hole 321 and the second mounting hole 401 can prevent hard contact between the bushing 30 and the base 40, reducing vibration between the bushing 30 and the base 40 when the motor 20 is operating. This improves the stability of the motor 20 in the fan assembly 100, reduces excessive noise in the portable temperature control device, extends the service life of the portable temperature control device, and enhances the user experience of the portable temperature control device.

[0057] like Figure 2 As shown, the buffer 70 is specifically disposed between a first mounting hole 321 and a second mounting hole 401, and the connecting member 60 passes through the buffer 70 when the bushing 30 and the base 40 are connected. The buffer 70, disposed between the first mounting hole 321 and the second mounting hole 401, can play a buffering role between the first mounting hole 321 and the second mounting hole 401, avoiding hard contact between the bushing 30 and the base 40.

[0058] For example, the buffer 70 may be a silicone block buffer 70, a nylon block buffer 70, an air cushion buffer 70, a PET buffer 70, a soft rubber buffer 70, etc., and is not limited here.

[0059] like Figure 2 , Figure 9 and Figure 10 As shown, in one possible embodiment, the fan blade 10 includes a hub 11 and a plurality of blades 12 connected to the surface of the hub 11. The bushing 30 is disposed inside the hub 11. The total outer diameter of the fan blade 10 is a first outer diameter D1, and the outer diameter of the hub 11 is a second outer diameter D2. The ratio of the second outer diameter D2 to the first outer diameter D1 is 0.4 to 0.6.

[0060] The fan assembly 100 of this invention avoids connecting the motor 20 and the base 40 via interference fit. Therefore, when manufacturing the fan blades 10, the hub 11 does not need to reserve space for interference fit of the motor 20. This allows the size of the hub 11 to be reduced while keeping the overall volume of the fan blades 10 unchanged, and the area of ​​the blades 12 to be increased accordingly to increase the sweeping area, thereby improving the wind speed and air volume of the fan assembly 100.

[0061] It is understood that in this application, the motor 20 and the base 40 are connected by the connector 60 through the mounting hole. This avoids the need for sufficient compression fitting allowance on the inner wall of the hub 11, which is required for the interference fit connection method. This allows for more space to be reserved for the blades 12 while keeping the total volume of the fan blades 10 unchanged. As a result, the blades 12 can provide a larger sweeping area, thereby increasing the wind speed and sweeping volume of the fan assembly 100, and thus improving the user experience of the portable temperature control device.

[0062] For example, the ratio of the second outer diameter D2 to the first outer diameter D1 is 0.4 to 0.6, such as 0.4, 0.42, 0.43, 0.45, 0.48, 0.5, 0.52, 0.55, 0.58, or 0.6.

[0063] It can be understood that when the ratio of the second outer diameter D2 to the first outer diameter D1 is less than 0.4, the physical dimensions of the hub 11 are insufficient to provide enough support area, resulting in stress concentration at the root of the blade 12. This increases the risk of blade 12 breakage or deformation, reducing the service life of the fan assembly 100. When the ratio of the second outer diameter D2 to the first outer diameter D1 is greater than 0.6, the area of ​​the blade 12 in the fan blade 10 is insufficient, resulting in the blade 12 failing to provide sufficient sweeping area, leading to insufficient wind speed and airflow in the fan assembly 100.

[0064] Therefore, in this application, the ratio of the second outer diameter D2 to the first outer diameter D1 is set to 0.4 to 0.6. This can increase the wind speed and sweep volume of the fan assembly 100 while ensuring that the physical dimensions of the hub 11 can provide sufficient support area, reducing the risk of blade breakage or deformation, and improving the stability of the fan assembly 100.

[0065] Please see Figure 11 and Figure 12 This utility model embodiment also provides a portable temperature control device, which may include the fan assembly 100 in this utility model embodiment. Specifically, the portable temperature control device may be a handheld fan, a neck fan, etc.

[0066] like Figure 11 As shown, when the portable temperature control device is a handheld fan, the portable temperature control device includes a fan housing 200 and a handle 300. The handle 300 is connected to the fan housing 200, and the fan assembly 100 is disposed inside the fan housing 200.

[0067] like Figure 12As shown, when the portable temperature control device is a neck fan, the portable temperature control device includes a wearing bracket 400. The wearing bracket 400 includes a neck part 410 and a handle part 420 respectively connected to both ends of the neck part 410. The neck part 410 and the handle part 420 together form a wearing space, and the fan assembly 100 is disposed in the wearing bracket 400.

[0068] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Furthermore, the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fan assembly, characterized in that, The fan assembly includes: fan blades; A motor connected to the fan blades, the motor including a stator, a rotor rotatable relative to the stator and a shaft, the rotor being disposed opposite to the stator, the rotor being connected to the shaft, and one end of the shaft being connected to the fan blades; A bushing integrated into the motor, a rotating shaft passing through the bushing, and a bearing inside the bushing, the bearing being sleeved on the rotating shaft and located between the rotating shaft and the bushing; A base having an accommodating space, in which the motor and the bushing are disposed, the base being connected to the bushing, and the base and the bushing being separately formed.

2. The fan assembly according to claim 1, characterized in that, The bushing includes a first connecting part and a second connecting part connected to the first connecting part. The rotating shaft passes through the first connecting part. The first connecting part is provided with a bearing sleeved on the rotating shaft. The second connecting part includes at least one first mounting hole. The base includes at least one second mounting hole, which is provided corresponding to the first mounting hole; The fan assembly further includes at least one connector that passes through the first mounting hole and the second mounting hole.

3. The fan assembly according to claim 2, characterized in that, The number of second mounting holes is multiple, the second connecting part is sleeved on the first connecting part, and the multiple second mounting holes are arranged around the first connecting part.

4. The fan assembly according to claim 3, characterized in that, The number of the second mounting holes is 2 to 4.

5. The fan assembly according to claim 2, characterized in that, The number of the second mounting holes is one, and the second mounting hole is located on the side of the first connecting part facing the base.

6. The fan assembly according to any one of claims 2 to 5, characterized in that, A buffer is provided between the first mounting hole and the second mounting hole, and the buffer is sleeved on the connector.

7. The fan assembly according to any one of claims 2 to 5, characterized in that, The connecting component is a screw, bolt, rivet, or pin.

8. The fan assembly according to claim 7, characterized in that, In the height direction of the fan assembly, the second connecting portion is spaced apart from the rotor, the second connecting portion is arranged around the end of the first connecting portion facing the base, and the second mounting hole and the rotor form a wiring space in the height direction of the fan assembly.

9. The fan assembly according to any one of claims 1 to 5, characterized in that, The fan blades include a hub and a plurality of blades connected to the surface of the hub. The shaft is sleeved inside the hub. The total outer diameter of the fan blades is a first outer diameter, and the outer diameter of the hub is a second outer diameter. The ratio of the second outer diameter to the first outer diameter is 0.4 to 0.

6.

10. A portable temperature control device, characterized in that, The portable temperature control device includes a fan assembly as described in any one of claims 1 to 9.

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