Neck-hung fan

Abstract

The utility model provides a neck-hanging fan. The neck-hanging fan comprises a first fan main body and a second fan main body connected with the first fan main body. Wherein the first fan main body and the second fan main body are used for blowing towards a user respectively, the first fan main body and the second fan main body are provided with control switches respectively, and the control switches are used for controlling work of the first fan main body and / or the second fan main body.

Description

Technical Field

[0001] This utility model relates to the field of fans, and in particular to a neck-hanging fan. Background Technology

[0002] As a portable cooling device, the fan body has received widespread attention and application in the hot season in recent years, especially the neck fan, which is both portable and frees up the hands, and is loved by many users.

[0003] However, as people continue to pursue a more comfortable experience, their expectations for the performance of neck fans are also gradually increasing. In the sweltering summer, users hope to achieve a faster and more direct cooling effect in high-temperature environments, a need that traditional neck fan designs have failed to fully meet.

[0004] To address this issue, this invention provides a neck-hanging fan that directs and concentrates airflow onto the user, providing a more comfortable experience in hot environments. This design enhances the cooling effect while maintaining portability, meeting the growing demand from users for personalized and efficient cooling devices. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a neck-hanging fan.

[0006] One embodiment of this utility model provides a neck fan, which includes: a first fan body; and a second fan body connected to the first fan body, wherein the first fan body and the second fan body are used to blow air toward the user respectively, and the first fan body and the second fan body are each provided with a control switch, the control switch being used to control the operation of the first fan body and / or the second fan body.

[0007] In one embodiment, the second fan body and the first fan body are disposed opposite to each other and are respectively disposed on both sides of the user's neck; the second fan body and the first fan body have the same structure.

[0008] In one embodiment, the first fan body further includes a first fan assembly, a first power supply assembly, and a first switch. The first body portion has a first mounting cavity. The first power supply assembly is disposed in the first mounting cavity and electrically connected to the first fan assembly. The first power supply assembly includes a first battery and a first circuit board. The first switch and the first battery are both electrically connected to the first circuit board. The first circuit board is provided with a first main control module. The first switch is mounted on the first body and electrically connected to the first main control module. The first switch is used to start or stop the first fan assembly.

[0009] In one embodiment, the first fan body further includes a first charging interface and a first charging control module, the first charging interface and the first charging control module being used to charge the first battery; the first fan body further includes a first charging interface, and the first fan body further includes a first status indicator module, the first status indicator module being used to display at least one of the following: the start status, the off status, the charging status, and the output wind speed level of the first fan body or the neck fan.

[0010] In one embodiment, the first fan body further includes a first battery protection module, which is electrically connected to the first main control module and the first charging control module, and is used to protect the first battery from charging.

[0011] In one embodiment, the first switch includes a continuously variable adjustment key, which is used to control the rotational speed of the first fan body; the continuously variable adjustment key is a potentiometer or encoder with variable resistance.

[0012] In one embodiment, the stepless adjustment key includes a plurality of connection terminals and at least one adjustment pin, one of the plurality of connection terminals is grounded, and the at least one adjustment pin is used for user operation to cause the other connection terminals to output corresponding stepless adjustment signals.

[0013] In one embodiment, the first fan body further includes a first boost module, the first switch is used to send a first fan working signal, and the first main control module is used to drive the first boost module to receive and increase the output voltage of the first battery when receiving the first fan working signal, so as to drive the first fan assembly to work. The first main control module is also used to control the output voltage of the first boost module to control the speed of the first fan assembly.

[0014] In one embodiment, the first boost module includes an inductor and a switching element. The control terminal of the MCU of the first main control module is connected to the control terminal of the switching element. The first conducting terminal of the switching element is connected to the first battery via the inductor, and the second conducting terminal of the switching element is grounded. The first conducting terminal of the switching element is connected to the first fan assembly. The MCU of the first main control module controls the switching element to turn on and off, thereby controlling the voltage from the first battery to be boosted through the inductor, and the boosted voltage is provided to the first fan assembly to drive the first fan assembly to blow air.

[0015] In one embodiment, the second fan body further includes a second fan body, a second fan assembly, a second power supply assembly, and a second switch. The second power supply assembly includes a second battery and a second circuit board. The second switch and the second battery are both electrically connected to the second circuit board. A second main control module is provided on the second circuit board. The second switch is mounted on the second body and electrically connected to the second main control module. The second switch is used to start or stop the fan body. The second fan body also includes a second boost module. The second switch is used to send a second fan operating signal. When the second main control module receives the second fan operating signal, it drives the second boost module to receive and increase the output voltage of the second battery to drive the second fan assembly to work. The first main control module is also used to control the output voltage of the second boost module to control the speed of the second fan assembly.

[0016] In one embodiment, the first main body portion is provided with a first conductive terminal, and the second main body portion is provided with a second conductive terminal. When the first fan body and the second fan body are connected as one unit, the first conductive terminal and the second conductive terminal are connected in communication. Consequently, the first switch is electrically connected to both the first main control module and the second main control module, and the second switch is electrically connected to both the first main control module and the second main control module, enabling at least one of the first and second switches to emit a third fan operating signal. The first main control module is used to receive the third fan operating signal and drive the first boost module to increase the output voltage of the first battery to drive the first fan assembly to operate. The second main control module is used to receive the third fan operating signal and drive the second boost module to increase the output voltage of the second battery to drive the second fan assembly to operate.

[0017] In one embodiment, the first fan body and the second fan body are manufactured independently, and then assembled and connected into one unit through an assembly process.

[0018] In one embodiment, the first fan body and the second fan body are detachably connected, so that the first fan body and the second fan body can work and be used independently.

[0019] In one embodiment, the neck fan further includes a connector, the connector including a flexible connecting portion, the flexible connecting portion having at least one mounting hole, the at least one mounting hole being used to fit and fix one end of the first fan body and one end of the second fan body, such that the first fan portion and the second fan portion are connected through the flexible connecting portion.

[0020] In one embodiment, the inner wall of the at least one mounting hole is provided with a first anti-detachment structure and a second anti-detachment structure. The first anti-detachment structure is used to engage with a first snap-fit ​​on the outer surface of one end of the first fan body, and the second anti-detachment structure is used to engage with a second snap-fit ​​on one end of the second fan body. At least one of the first anti-detachment structure and the first snap-fit ​​includes a plurality of protrusions and recesses arranged sequentially along the extending direction.

[0021] In one embodiment, the first anti-detachment structure includes a plurality of first slots arranged along the extension direction of the connector, for engaging with a plurality of protrusions of the first buckle arranged along the extension direction; the second anti-detachment structure includes a plurality of second slots arranged along the extension direction, for engaging with a plurality of protrusions of the second buckle arranged along the extension direction; the first anti-detachment structure is detachably connected to the first buckle, and the second anti-detachment structure is detachably connected to the second buckle; the flexible connection portion further includes a first fixing structure and a second fixing structure, the first fixing structure and the second fixing structure being respectively disposed at both ends of the flexible connection portion, the first fixing structure being connected to a third fixing structure of one end of the first fan body, and the second fixing structure being connected to a fourth fixing structure at one end of the second fan body; the first fixing structure is detachably connected to the third fixing structure, and the second fixing structure is detachably connected to the fourth fixing structure.

[0022] In one embodiment, the connector further includes at least one neck brace connected to the flexible connector on the inner side near the human neck, the at least one neck brace forming at least one air intake gap with the first fan portion or the second fan portion, so that air from the first fan portion or the second fan portion can enter the air intake gap.

[0023] In one embodiment, the first fan body includes: a first main body portion, the first main body portion having an arcuate structure, including a concave first air guide path disposed on one side surface of the first main body portion and extending along the extension direction of the arcuate structure; the first fan assembly disposed at one end of the first main body portion and used to blow air toward the first air guide path, the first air guide path being used to guide the air of the first fan assembly to one side of the first main body portion and the end of the first main body portion away from the first fan assembly.

[0024] In one embodiment, the first fan assembly includes a first fan housing, a first motor, and a first fan blade mounted on the shaft of the first motor. The first motor and the first fan blade are both disposed in the first fan housing. The first fan housing includes a housing body and an air outlet shroud. The air outlet shroud is disposed on one side of the housing body. The air outlet shroud includes a plurality of wind-gathering rings and an annular wall structure connected to the periphery of the plurality of wind-gathering rings. A plurality of air outlet holes are defined between the plurality of wind-gathering rings. The wind-gathering rings are used to pressurize the air from the housing body and blow it out after cooperating with the inner surface of the annular wall structure.

[0025] In one embodiment, the inner surface of the annular wall structure is an inclined surface or an arc-shaped surface, such that the inner diameter of the annular wall structure gradually decreases along the direction from the housing body to the air outlet hood; the housing body includes an annular side wall structure, a mounting portion located at one end of the side wall structure, and an air guide portion connecting the mounting portion and the side wall structure. The air guide portion includes a plurality of spaced air guide blades for directing air from the first fan blade in a preset direction. The first fan blade and the first motor are disposed within the side wall structure and located on one side of the mounting portion, and the first motor is mounted on the mounting portion; the first fan housing also includes a metal mesh, which is disposed on the side of the side wall structure away from the air outlet hood. The metal mesh has a plurality of air inlets, each with an inner diameter between 0.5 mm and 4 mm; the air inlets are regular hexagonal, and two adjacent air inlets share the same enclosure wall, the width of which is between 0.05 mm and 2 mm.

[0026] The beneficial effects of this utility model are as follows: This utility model provides a neck fan, including two fan bodies, each with a control switch, which facilitates user control of the neck fan and improves user experience. Furthermore, the two fan bodies can form a modular design, which not only facilitates assembly but also reduces assembly and maintenance costs. Users can also disassemble, assemble, store, and DIY their own fans, further enhancing the user experience. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1This is a schematic diagram of the overall structure of the neck fan according to Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of the neck fan according to another perspective of Embodiment 1 of this utility model;

[0031] Figure 3 This is a cross-sectional view of the neck fan according to Embodiment 1 of this utility model;

[0032] Figure 4 This is an exploded view of the neck fan according to Embodiment 1 of this utility model;

[0033] Figure 5 for Figure 3 Enlarged view of the middle V section

[0034] Figure 6 for Figure 4 A magnified view of a section VI;

[0035] Figure 7 This is a block diagram illustrating the principle of the neck fan according to Embodiment 1 of this utility model;

[0036] Figure 8 This is the circuit diagram of the first charging interface of the neck fan of this utility model;

[0037] Figure 9 This is the circuit diagram of the first charging control module of the neck fan of this utility model;

[0038] Figure 10 This is the circuit diagram of the first battery of the neck fan of this utility model;

[0039] Figure 11 This is the circuit diagram of the first main control module of the neck-hanging fan of this utility model;

[0040] Figure 12 This is a circuit diagram of the first boost module and the first motor of the neck fan of this utility model;

[0041] Figure 13 This is a circuit diagram of the first main control module, the first boost module, and the first motor of a modified embodiment of the neck fan of this utility model;

[0042] Figure 14 This is a circuit diagram of the first main control module, the first boost module, and the first motor of another modified embodiment of the neck fan of this utility model;

[0043] Figure 15 This is a circuit diagram of the first main control module, the first boost module, and the first motor of another modified embodiment of the neck fan of this utility model.

[0044] Figure 16This is a schematic diagram of the overall structure of Embodiment 2 of the neck-hanging fan of this utility model;

[0045] Figure 17 This is a schematic diagram of the first main body of the second embodiment of the neck fan of this utility model;

[0046] Figure 18 This is a schematic diagram of the second main body of the neck fan according to Embodiment 2 of this utility model;

[0047] Figure 19 This is a schematic diagram of the overall structure of Embodiment 3 of the neck-hanging fan of this utility model;

[0048] Figure 20 This is an exploded view of a third embodiment of the neck fan of this utility model;

[0049] Figure 21 This is another exploded view of Embodiment 3 of the neck-hanging fan of this utility model;

[0050] Figure 22 This is a cross-sectional view of a third embodiment of the neck-hanging fan of this utility model;

[0051] Figure 23 This is an exploded view of the main body of the fan of this utility model;

[0052] Figure 24 yes Figure 23 Another angle of the exploded view;

[0053] Figure 25 yes Figure 23 A schematic diagram of the outer side of the first main body of the fan body shown;

[0054] Figure 26 yes Figure 23 A schematic diagram of the inner side of the first outer cover of the fan body shown;

[0055] Figure 27 This is a schematic diagram of the metal mesh structure of the first fan assembly in a modified embodiment of the fan body of this utility model. Detailed Implementation

[0056] Example 1

[0057] refer to Figures 1 to 13A neck-hanging fan includes a neck-hanging body 1 and a first fan assembly 3. The lower end of the neck-hanging body 1 has a protruding cylindrical first air guide cavity 2. The first air guide cavity 2 includes a first air inlet 22 disposed at the lower end of the neck-hanging body 1 and a first air outlet 23 disposed opposite to the first air inlet 22. The neck-hanging body 1 includes an inner end 11 that contacts the neck of the user, and the first air outlet 23 is disposed facing the inner end 11. The first fan assembly 3 is located within the first air guide cavity 2 and is used to drive airflow from the first air inlet 22 through the first air outlet 23 to the inner end 11. With this structure, because the first air guide cavity 2 is cylindrical, the neck-hanging fan forms a vertically blowing direct-flow fan. The first fan assembly 3 can drive airflow from the first air inlet 22 through the first air outlet 23 to the inner end 11, greatly improving the blowing efficiency. Users can more directly feel the cool airflow blowing directly onto their neck when using the neck-hanging fan, improving the overall performance of the fan. Furthermore, since the first air guide cavity 2 is a straight cylindrical cavity that is integrally formed and protrudes from the neck hanger body 1, this design enhances the overall aesthetics and design of the product, and helps to improve the wearing comfort of the neck hanger fan, thereby improving the overall quality of the product and the user experience.

[0058] In this embodiment, the neckband body 1 is a U-shaped neckband body 1, which includes a first main body portion 101, a second main body portion 102, and a connector 103. The first main body portion 101 and the second main body portion 102 are detachably connected by the connector 103. The connector 103 is a flexible connector, specifically, it can be a silicone connector, a plastic connector, a rubber connector, etc. The first fan assembly 3 is disposed on the first main body portion 101.

[0059] In this embodiment, the neck fan (such as the first main body 101) has a recessed first air guide 12, which extends from the first air outlet 23 to the inner end 11. The first fan assembly 3 drives airflow to exit from the first air outlet 23 and blow it along the first air guide 12 toward the inner end 11. Furthermore, the inner end 11 is connected to a flexible first neck support 111, and a first air inlet gap 121 is formed between the first neck support 111 and the inner end 11. The first fan assembly 3 drives airflow to exit from the first air outlet 23 and blow it along the first air guide 12 toward the first air inlet gap 121. The first neck support 111 can be a silicone neck support, a plastic neck support, a rubber neck support, etc. With the above structure, when the airflow is blown out from the first air outlet 23, under the guidance of the concave first air guide 12, the airflow will blow along the first air guide 12 toward the inner end 11. And due to the first air inlet gap 121, the airflow can be blocked in the gap, so that when the user wears the neck fan, he / she can feel the airflow at the inner end 11 more strongly, which enhances the heat dissipation effect. In addition, the flexible neck support provides the user with a more comfortable support effect, improving the user experience.

[0060] In this embodiment, the width of the first air guide path gradually decreases towards the inner end of the first air outlet; the width of the first air guide path ranges from 1 to 5 cm; the length of the first air guide path ranges from 8 to 16 cm; and the depth of the first air guide path ranges from 0 to 3 cm.

[0061] In this embodiment, the first main body 101 includes a first outer shell 1011 and a first inner shell 1012. A first air guide 12 is disposed in the first inner shell 1012, and the first inner shell 1012 and the first outer shell 1011 are detachably connected by a snap-fit. It can be understood that the above structural design allows users to easily open and install the first main body 101, facilitating user maintenance.

[0062] In this embodiment, the diameter of the first air inlet 22 is in the range of 30mm-60mm, and the diameter of the first air outlet 23 is in the range of 30mm-60mm. This appropriate diameter range helps to achieve a balanced airflow, allowing the fan to provide sufficient airflow to maintain a high cooling effect. It also contributes to a more rational overall structure, making it easier to carry and use.

[0063] In this embodiment, the lower end of the neck fan is further provided with a cylindrical second air guide cavity 4. The second air guide cavity 4 includes a second air inlet 42 disposed at the lower end of the neck body 1 and a second air outlet 43 disposed opposite to the second air inlet 42. The second air outlet 43 is disposed towards the inner end 11. The neck fan also includes a second fan assembly 5 disposed in the second air guide cavity 4. The second fan assembly 5 is used to drive airflow from the second air inlet 42 through the second air outlet 43 to the inner end 11. With the above structure, since the second air guide cavity 4 is cylindrical, the neck fan forms a vertically blowing direct-blowing fan, which allows the second fan assembly 5 to drive airflow from the second air inlet 42 through the second air outlet 43 to the inner end 11, greatly improving the blowing efficiency. Users can more directly feel the cool airflow when using the neck fan, improving the overall performance of the fan. Furthermore, since the second air guide cavity 4 is a straight cylindrical cavity integrally formed and protruding from the neckband body 1, this design enhances the overall aesthetics and design sense of the product, and helps to improve the wearing comfort of the neckband fan, thereby improving the overall quality and user experience of the product. It can be understood that the second fan assembly 5 is disposed in the second body portion 102.

[0064] In this embodiment, the neck fan (such as the second main body 102) has a recessed second air guide 13, which extends from the second air outlet 43 to the inner end portion 11. The second fan assembly 5 drives airflow to exit from the second air outlet 43 and blow it along the second air guide 13 toward the inner end portion 11. Furthermore, the inner end portion 11 is connected to a flexible second neck support 112, and a second air inlet gap 131 is formed between the second neck support 112 and the inner end portion 11. The second fan assembly 5 drives airflow to exit from the second air outlet 43 and blow it along the second air guide 13 toward the second air inlet gap 131. The second neck support 112 can be a silicone neck support, a plastic neck support, a rubber neck support, etc. With the above structure, when the airflow is blown out from the second air outlet 43, under the guidance of the concave second air guide 13, the airflow will blow along the second air guide 13 to the inner end 11. And due to the second air inlet gap 131, the airflow can be blocked in the gap, so that when the user wears the neck fan, he / she can feel the airflow at the inner end 11 more strongly, which enhances the heat dissipation effect. In addition, the flexible neck support provides the user with a more comfortable support effect, improving the user experience.

[0065] In this embodiment, the second main body 102 includes a second outer shell 1021 and a second inner shell 1022. The second air guide 13 is disposed in the second inner shell 1022, and the second inner shell 1022 and the second outer shell 1021 are detachably connected by a snap-fit. This allows the user to easily open and install the second main body 102, facilitating user maintenance.

[0066] This embodiment also includes a first power supply component 8, located within the neckband body 1. The first power supply component 8 is electrically connected to the first fan assembly 3 to supply power to the first fan assembly 3. The first power supply component 8 includes a first battery 81 and a first circuit board 82, with the first battery 81 electrically connected to the first circuit board 82 to supply power to the first circuit board 82. It also includes a second power supply component 9, located within the neckband body 1. The second power supply component 9 is electrically connected to the second fan assembly 5 to supply power to the second fan assembly 5. The second power supply component 9 includes a second battery 91 and a second circuit board 92, with the second battery 91 electrically connected to the second circuit board 92 to supply power to the second circuit board 92. With this structure, placing the first power supply component 8 within the neckband body 1 improves the overall aesthetics of the neckband fan and effectively supplies power to the first fan assembly 3, ensuring product reliability. Similarly, placing the second power supply component 9 within the neckband body 1 also improves the overall aesthetics of the neckband fan and effectively supplies power to the second fan assembly 5, ensuring product reliability.

[0067] In this embodiment, the first fan assembly 3 includes a first fan housing 31, a first motor 32 fixedly installed inside the first fan housing 31, and a first fan blade 33 mounted on the shaft of the first motor 32. The first fan housing 31 is provided with a third air inlet 311, a first air duct 312, and a third air outlet 313. The first air inlet 22, the third air inlet 311, the first air duct 312, the third air outlet 313, the first air guide cavity 2, and the first air outlet 23 are sequentially connected. Through the above structural design, the first fan assembly 3 in this embodiment has an independent outer shell, which facilitates the individual installation and replacement of the fan.

[0068] In another embodiment, the first fan assembly 3 includes a first motor 32 and a first fan blade 33 mounted on the shaft of the first motor 32; a first air inlet 22 is connected to a first air inlet cover 221, the first air inlet cover 221 having a plurality of first air inlet holes 222; a first air outlet 23 is connected to a first air outlet cover 231, the first air outlet cover 231 having a plurality of first air outlet holes 232. With the above structure, this configuration eliminates the need for a fan housing, saving costs, and effectively directs airflow. The design of the first air inlet cover 221 and the first air outlet cover 231 helps prevent other debris, such as hair and paper scraps, from being sucked into the fan, thus contributing to the fan's safety.

[0069] In this embodiment, the second fan assembly 5 includes a second fan housing 51, a second motor 52 fixedly installed inside the second fan housing 51, and a second fan blade 53 mounted on the shaft of the second motor 52. The second fan housing 51 is provided with a fourth air inlet 42, a second air duct 512, and a fourth air outlet 513. The second air inlet 42, the fourth air inlet 511, the second air duct 512, the fourth air outlet 513, the second air guide cavity 4, and the first air outlet 23 are sequentially connected. Through the above structural design, the first fan assembly 3 in this embodiment has an independent outer shell, which facilitates the individual installation and replacement of the fan.

[0070] In other embodiments, the second fan assembly 5 includes a second motor 52 and a second fan blade 53 mounted on the shaft of the second motor 52; a second air inlet shroud 421 is connected to the second air inlet 42 and the fourth air inlet 511, and the second air inlet shroud 421 is provided with a plurality of second air inlet holes 422; a second air outlet shroud 431 is connected to the second air outlet 43 and the fourth air outlet 513, and the second air outlet shroud 431 is provided with a plurality of second air outlet holes 432. With the above structure, the design of the fan housing is omitted, saving costs, and the airflow direction is effectively realized. The design of the second air inlet shroud 421 and the second air outlet shroud 431 helps to prevent other debris, such as hair and paper scraps, from being sucked into the fan, thus helping to maintain the safety of the fan.

[0071] In this embodiment, the connector 103 has a mounting hole 1031, the first main body 101 has a first connecting end 1013 connected to the connector 103, the first connecting end 1013 is detachably inserted into one end of the mounting hole 1031, and the second main body 102 has a second connecting end 1023 connected to the connector 103, the second connecting end 1023 is detachably inserted into the other end of the mounting hole 1031.

[0072] Furthermore, the first connecting end 1013 is provided with a first buckle 10131 with a concave-convex shape, the connector 103 is provided with a first slot 1032 that engages with the first buckle 10131, the second connecting end 1023 is provided with a second buckle 10331 with a concave-convex shape, and the connector 103 is provided with a second slot 10231 that engages with the second buckle 10331. With the above structure, the connector 103 is a flexible silicone connector. After the connector 103 is bent to a certain angle, the first main body 101 and the second main body 102 can be easily inserted into the mounting hole 1031. The first main body 101 is engaged with the first slot 1032 on the inner wall of the connector 103 through the concave-convex shape of the first buckle 10131 provided at the first connecting end 1013. The second main body 102 is engaged with the second slot 10231 on the inner wall of the connector 103 through the concave-convex shape of the second buckle 10331 provided at the second connecting end 1023. This allows the first main body 101 and the second main body 102 to be easily installed and connected to form a complete neck fan.

[0073] like Figures 3-6 As shown, the connector 103 can be divided into a flexible connecting portion 103a, which may have at least one mounting hole 1031. The at least one mounting hole 1031 extends along an extension direction D1 from the first connecting end 1013 of the first main body portion 101 to the second connecting end 1023 of the second main body portion 102, and is used to fit and fix to the first connecting end 1013 and the second connecting end 1023, so that the first main body portion 101 and the second main body portion 102 are connected through the flexible connecting portion 103a. Connecting the first main body portion 101 and the second main body portion 102 through the flexible connecting portion 103a creates a flexible connection between them, thereby facilitating user wear.

[0074] In this embodiment, the flexible connecting part 103a has a through mounting hole, that is, a through mounting hole provided along the extension direction D1. The two ends of the mounting hole 103a are respectively used to fit and fix the first connecting end 1013 and the second connecting end 1023. Using a single through mounting hole is simple and provides flexible assembly space. However, in a modified embodiment, the flexible connecting part 103a may also have two oppositely arranged blind holes (i.e., non-through holes), which are respectively used to fit and fix the first connecting end 1013 and the second connecting end 1023.

[0075] In one embodiment, the inner wall of the at least one mounting hole 1031 is provided with a first anti-detachment structure (such as a second slot 1023a) and a second anti-detachment structure (such as a second slot 1023b). The first anti-detachment structure is used to engage with a first buckle 10131 on the outer surface of the first connecting end 1013, and the second anti-detachment structure is used to engage with a second buckle 10331 on the outer surface of the second connecting end 1023. At least one of the first anti-detachment structure and the first buckle 10131 includes a plurality of protrusions and recesses arranged sequentially along the extension direction D1.

[0076] Specifically, in this embodiment, the first anti-detachment structure includes a plurality of second slots 1023a arranged along the extension direction for engaging with a plurality of protrusions of the first buckle 10131 arranged along the extension direction; the second anti-detachment structure includes a plurality of second slots 1023b arranged along the extension direction for engaging with a plurality of protrusions of the second buckle 10331 arranged along the extension direction; the first anti-detachment structure is detachably connected to the first buckle 10131, and the second anti-detachment structure is detachably connected to the second buckle 10331.

[0077] In one embodiment, the flexible connection portion 103a is arc-shaped and has an inner side for approaching the human neck and an outer side for away from the human neck. The first anti-detachment structure is disposed on the inner sidewall adjacent to the outer side at one end of the at least one mounting hole 1031; the second anti-detachment structure is disposed on the inner sidewall adjacent to the outer side at the other end of the at least one mounting hole 1031.

[0078] In one embodiment, the flexible connecting portion 103a is further provided with a first fixing structure 103b and a second fixing structure 103c. The first fixing structure 103b and the second fixing structure 103c are respectively disposed at both ends of the flexible connecting portion 103a. The first fixing structure 103b is used to connect with the third fixing structure 1013a of the first connecting end 1013, and the second fixing structure 103c is used to connect with the fourth fixing structure 1023a of the second connecting end 1023. The first fixing structure 103b is used to be detachably connected with the third fixing structure 1013a, and the second fixing structure 103c is used to be detachably connected with the fourth fixing structure 1023a.

[0079] In one embodiment, one of the first fixing structure 103b and the third fixing structure 1013a is a first fixing post 141, and one of the first fixing structure 103b and the third fixing structure 1013a is a first fixing hole 142; one of the second fixing structure 103c and the fourth fixing structure 1023a is a second fixing post 143, and one of the second fixing structure 103c and the fourth fixing structure 1023a is a second fixing hole 144; the first fixing structure 103b extends along a first tangential direction perpendicular to the extension direction (D2), and the second fixing structure extends along a second tangential direction perpendicular to the extension direction (D3).

[0080] In one embodiment, the first fixing post 141 includes a first post body 1411 and a first hook portion 1412 connected to the end of the first post body 1411 away from the flexible connecting portion 103a. The outer diameter of the first hook portion 1412 is larger than the outer diameter of the first post body 1411 to prevent the first fixing post 141 from disengaging from the first fixing hole 142. The second fixing post 143 includes a second post body 1431 and a second hook portion 1432 connected to the end of the second post body 1431 away from the flexible connecting portion 103a. The outer diameter of the second hook portion 1432 is larger than the outer diameter of the second post body 1431 to prevent the second fixing post 143 from disengaging from the second fixing hole 144.

[0081] In one embodiment, the first fixing hole 142 includes a first portion 1421 corresponding to the first column 1411 and a second portion 1422 corresponding to the first hook portion 1412, wherein the diameter of the second portion 1422 is larger than the diameter of the first portion 1421; the second fixing hole 144 includes a third portion 1441 corresponding to the second column 1431 and a fourth portion 1442 corresponding to the second hook 1432, wherein the diameter of the fourth portion 1442 is larger than the diameter of the third portion 1441.

[0082] In one embodiment, the connector 103 may also be provided with at least one neck support (such as a first neck support 111 and a second neck support 112). The at least one neck support is connected to the inner side of the flexible connector 103a that is close to the human neck. The at least one neck support is used to form at least one air inlet gap with the first main body 101 or the second main body 102, so that the air from the first main body 101 or the second main body 102 can enter the air inlet gap (such as 121, 131), thereby avoiding the situation where the human neck is in direct contact with the first main body 101 or the second main body 102, resulting in the air not being able to be provided to the surface of the neck skin.

[0083] As previously shown, in this embodiment, the at least one neck support includes a first neck support 111 and a second neck support 112. The first neck support 111 is disposed adjacent to the first main body portion 101 and is used to form a first air inlet gap 121 between itself and the first main body portion 101. The second neck support 112 is disposed adjacent to the second main body portion 102 and is used to form a second air inlet gap 131 between itself and the second main body portion 102.

[0084] In one embodiment, the surfaces of the first neck brace 111 and the second neck brace 112 away from the flexible connection portion 103a also have a plurality of protrusions 103m. The plurality of protrusions 103m are used to create a gap between the at least one neck brace and the skin of the human neck, and also to prevent the human neck from directly contacting the first main body portion 101 or the second main body portion 102, which would prevent wind from being delivered to the surface of the neck skin.

[0085] It can be seen that the surfaces of the first neck support 111 and the second neck support 112 away from the flexible connecting part 103a are arc-shaped surfaces, and the size of the plurality of protrusions 103b can gradually decrease from the middle to both ends along the vertical direction D4 perpendicular to the extension direction D1, thereby achieving a more comfortable wearing effect.

[0086] In this embodiment, the flexible connecting part 103a, the first neck support part 111 and the second neck support part 112 are all made of flexible materials. If they are all made of the same flexible material (such as flexible silicone material) and are integrally molded, a more comfortable wearing effect can be achieved.

[0087] Further, the flexible connection portion 103a includes a main body portion 103d, a first extension portion 103e, and a second extension portion 103f. The main body portion 103d has at least one mounting hole 1031. The first extension portion 103e and the second extension portion 103f are respectively connected to the two ends of the main body portion 103d, and the first extension portion 103e and the second extension portion 103f protrude from the main body portion 103d along the extension direction D1. The first extension portion 103e and the second extension portion 103f are respectively used to cover the inner surface of the first connection end 1013 and the inner surface of the second connection end 1023 that are close to the neck of the human body. The first fixing structure and the second fixing structure are respectively disposed in the first extension 103e and the second extension 103f, so that the first fixing structure and the second fixing structure are close to the inner side of the human neck, and the first anti-detachment structure and the second anti-detachment structure are located on the outer side away from the human neck. The inner and outer cooperation can make the connector 103 reliably connect the first main body 101 and the second main body 102, and prevent the connection from easily detaching.

[0088] In this embodiment, the first air guide cavity 2 is located inside the first main body portion 101, and the first main body portion 101 is also provided with a first mounting cavity 1014, and the first power supply component 8 is located inside the first mounting cavity 1014; the second air guide cavity 4 is located inside the second main body portion 102, and the second main body portion 102 is also provided with a second mounting cavity 1024, and the second power supply component 9 is located inside the second mounting cavity 1024.

[0089] In this embodiment, the first main body 101 is further provided with a first switch 1015, a first charging interface 1016, and a first indicator module 1017, all of which are electrically connected to the first power supply component 8. The second main body 102 is further provided with a second switch 1025, a second charging interface 1026, and a second indicator module 1027, all of which are electrically connected to the second power supply component 9. With the above structure, the first switch 1015 and the second switch 1025 are used to start or stop the neck fan, the first charging interface 1016 and the second charging interface 1026 are used to charge the first battery 81 and the second battery 91, respectively, and the first indicator module 1017 and the second indicator module 1027 can respectively indicate whether the fan is on or off, and can also display the fan output wind speed level.

[0090] In this embodiment, as Figures 7-13As shown, the neck fan also includes a first charging control module 811, a first battery protection module 812, a first charging indicator module 813, a first main control module 814, and a first boost module 815; the first charging control module 811, the first battery protection module 812, the first charging indicator module 813, the first main control module 814, and the first boost module 815 can all be disposed on the first circuit board 82.

[0091] The first charging interface 1016 and the first charging control module 811 are both electrically connected to the first battery 81. The first charging indicator module 813 is connected to the first charging control module 811. The first charging interface 1016 and the first charging control module 811 are used to charge the first battery 81. The first charging indicator module 813 is used to display the charging status. The first battery protection module 812 is electrically connected to the first charging control module 811 and the first battery 81 to protect the first battery 81.

[0092] The first main control module 814, the first boost module 815, and the first motor 32 are all electrically connected to the first battery 81. The first switch 1015 and the first indicator module 1017 are electrically connected to the first main control module 814. The first indicator module 1017 is used to indicate whether the neck fan is on or off. It can be understood that the first indicator module 1017 and the first charging indicator module 813 constitute a first status indicator module, used to display at least one of the following: the start-up status, the off status, the charging status, and the output wind speed level of the first fan body or the neck fan. In this embodiment, both the first indicator module 1017 and the first charging indicator module 813 are indicator light modules. However, in other embodiments, the first status indicator module can also be one or more displays, such as an LED display, a liquid crystal display, or an electronic ink display.

[0093] In this embodiment, the neck fan further includes a second charging control module 921, a second battery protection module 922, a second charging indicator module 923, a second main control module 924, and a second boost module 925. The second charging control module 921, the second battery protection module 922, the second charging indicator module 923, the second main control module 924, and the second boost module 925 can all be mounted on the second circuit board 92.

[0094] The second charging interface 1026 and the second charging control module 921 are both electrically connected to the second battery 91. The second charging indicator module 923 is connected to the second charging control module 921. The second charging interface 1026 and the second charging control module 921 are used to charge the second battery 91. The second charging indicator module 923 is used to display the charging status. The second battery protection module 922 is electrically connected to the second charging control module 921 and the second battery 91 to protect the second battery 91.

[0095] The second main control module 924, the second boost module 925, and the second motor 52 are all electrically connected to the second battery 91. The second switch 1025 and the second indicator module 1027 are electrically connected to the second main control module 924. The second indicator module 1027 is used to indicate whether the neck fan is on or off. It can be understood that the second indicator module 1027 and the second charging indicator module 923 constitute a first status indicator module, used to display at least one of the following: the start-up status, the off status, the charging status, and the output wind speed level of the second fan body or the neck fan. In this embodiment, both the second indicator module 1027 and the second charging indicator module 923 are indicator light modules. However, in other embodiments, the second status indicator module can also be one or more displays, such as an LED display, a liquid crystal display, or an electronic ink display.

[0096] In this embodiment, the first main body 101 is provided with a first conductive terminal 1018, and the second main body 102 is provided with a second conductive terminal 1019. The first conductive terminal 1018 and the second conductive terminal 1019 are connected. The first switch 1015 is electrically connected to the first main control module 814 and the second main control module 924 respectively. The second switch 1025 is electrically connected to the first main control module 814 and the second main control module 924 respectively. The first switch 1015 or the second switch 1025 is used to send a third fan working signal.

[0097] The first main control module 814 is used to receive the working signal of the third fan and drive the first boost module 815 to receive and increase the output voltage of the first battery 81 so as to drive the first motor 32 to work.

[0098] The second main control module 924 is used to receive the working signal of the third fan and drive the second boost module 925 to receive and increase the output voltage of the second battery 91 to drive the second motor 52 to work.

[0099] Understandable, such as Figure 14 As shown, in one embodiment, the operation of either the first switch 1015 or the second switch 1025 by the user can generate a third fan operating signal, causing both the first motor 32 and the second motor 52 to operate. Specifically, the first conductive terminal 1018 of the first main body portion 101 may have a connector J1 for connection with the connector J1 of the second conductive terminal 1019 of the second main body portion 102, thereby realizing the electrical connection between the first main control module 814 and the second main control module 924, and thus enabling the operation of either the first switch 1015 or the second switch 1025 by the user to generate a third fan operating signal. Specifically, the connector J1 may have two signal terminals, but is not limited to the above.

[0100] It is understood that when there is no connection between the connector J1 of the first conductive end 1018 of the first main body 101 and the connector J1 of the second conductive end 1019 of the second main body 102, that is, when the first main body 101 and the second main body 102 are independent, the first switch 1015 and the second switch 1025 can independently control the operation of the two fan assemblies, and the two do not affect each other.

[0101] Furthermore, in some other embodiments, through preset program control, the control of the two fan assemblies can be dominated by either the first switch 1015 or the second switch 1025 as needed. Specifically, in another embodiment, a third fan operating signal is issued only when one of the first switch 1015 and the second switch 1025 (such as the first switch) is operated by the user, so that the first motor 32 and the second motor 52 operate simultaneously.

[0102] Specifically, such as Figure 13 and Figure 14 As shown, the first switch 1015 and the second switch 1025 may include a push-button switch S1. In other embodiments, such as Figure 15 As shown, the first switch 1015 and the second switch 1025 may further include a stepless adjustment key P1 (such as a knob or slide adjustment key) that can be steplessly adjusted. The stepless adjustment key P1 can control the speed of the fan assembly, thereby controlling the wind force. The stepless adjustment key P1 includes, but is not limited to, stepless adjustment devices such as potentiometers with variable resistance and encoders. In one embodiment, the stepless adjustment key P1 may have multiple connection terminals and at least one adjustment pin. One of the multiple connection terminals can be grounded, and at least one adjustment pin can be operated by the user to cause the other connection terminals to output corresponding stepless adjustment signals. In other embodiments, multiple stepless adjustment pins can be provided to increase the adjustment range and functions. It can be understood that the stepless adjustment key P1 allows users to control the wind force of the neck fan according to their own needs, improving the user experience.

[0103] In this embodiment, the first main body 101 and the second main body 102 can be regarded as a neck fan formed by two independent fans electrically connected together, wherein the circuit diagrams of the various circuit modules contained in the two independent fans are the same.

[0104] Through the above structure, the first main body 101 and the second main body 102 are combined to form a complete U-shaped neck fan. At this time, the first conductive end 1018 and the second conductive end 1019 are connected. Regardless of whether the user presses the first switch 1015 or the second switch 1025, a third fan working signal can be emitted. After receiving the third fan working signal, the first main control module 814 drives the first boost module 815 to receive and increase the output voltage of the first battery 81, thereby driving the first motor 32 to work. The rotation of the first motor 32 can drive the first fan blade 33 to rotate, realizing the blowing effect of the first fan assembly. After receiving the third fan working signal, the second main control module 924 drives the second boost module 925 to receive and increase the output voltage of the second battery 91, thereby driving the second motor 52 to work. The rotation of the second motor 52 can drive the second fan blade 53 to rotate, realizing the blowing effect of the second fan assembly.

[0105] Understandable. Figure 11 The first main control module 814 shown and Figure 12 The first boost module 815 and related circuits shown can also be implemented in other modified ways, such as... Figure 13 As shown, in one modified embodiment, the boost control chip U2 of the first boost module 815 can be omitted. Specifically, the first boost module 815 may include an inductor L1 and a switching element Q2. The control terminal of the MCU of the first main control module 814 is connected to the control terminal of the switching element Q2. The first conducting terminal of the switching element Q2 is connected to the battery BAT via the inductor L1, and the second conducting terminal of the switching element Q2 is grounded. The first conducting terminal of the switching element Q2 is connected to the first motor MG1. Specifically, the first conducting terminal of the switching element Q2 is connected to the first motor MG1 via the diode D4. The switching of the MCU of the first main control module 814 controls the voltage from the battery BAT to be boosted through the inductor L1, and the boosted voltage is provided to the first motor MG1 to drive the first fan blade 33 to rotate. As mentioned above, the second main control module 924 and the second boost module 925 can also be adopted. Figure 13 The circuit with the same structural principle shown provides the boosted voltage to the second motor to drive the second fan blade 53 to rotate, which will not be described again here.

[0106] Example 2

[0107] refer to Figures 16 to 18 The difference between Embodiment 2 and Embodiment 1 is that the first main body 101 and the second main body 102 of the neck fan are disassembled to form two independent fans. The first main body 101 and the second main body 102 are two small fans that can work independently.

[0108] In this embodiment, the first main body 101 includes a first charging control module 811, a first battery protection module 812, a first charging indicator module 813, a first main control module 814, and a first boost module 815, which are electrically connected to the first circuit board 82.

[0109] The first charging interface 1016, the first charging control module 811, and the first charging indicator module 813 are all electrically connected to the first battery 81. The first charging interface 1016 and the first charging control module 811 are used to charge the first battery 81, and the first charging indicator module 813 is used to display the power level of the first battery 81. The first battery protection module 812 is electrically connected to the first charging control module 811 and the first battery 81 to protect the first battery 81.

[0110] The first main control module 814, the first boost module 815, and the first motor 32 are all electrically connected to the first battery 81. The first switch 1015 and the first indicator module 1017 are electrically connected to the first main control module 814. The first switch 1015 is used to send a first fan working signal. The first main control module 814 is used to receive the first fan working signal and drive the first boost module 815 to receive and increase the output voltage of the first battery 81 to drive the first motor 32 to work. The first indicator module 1017 is used to display whether the neck fan is on or off.

[0111] With the above structure, the first charging interface 1016 is used to charge the first battery 81, the first charging control module 811 is used to control the charging of the first battery 81, and when the first switch 1015 is turned on, a first fan working signal is emitted. When the first fan working signal is received, the first main control module 814 is used to drive the first boost module 815 to receive and increase the output voltage of the first battery 81 so as to drive the first motor 32 to work. The first main control module 814 can also adjust the speed of the first motor 32 by controlling the output voltage of the first boost module 815.

[0112] In this embodiment, the second main body 102 includes a second charging control module 921, a second battery protection module 922, a second charging indicator module 923, a second main control module 924, and a second boost module 925, which are electrically connected to the second circuit board 92.

[0113] The second charging interface 1026, the second charging control module 921, and the second charging indicator module 923 are all electrically connected to the second battery 91. The second charging interface 1026 and the second charging control module 921 are used to charge the second battery 91, and the second charging indicator module 923 is used to display the power level of the second battery 91. The second battery protection module 922 is electrically connected to the second charging control module 921 and the second battery 91 to protect the second battery 91.

[0114] The second main control module 924, the second boost module 925, and the second motor 52 are all electrically connected to the second battery 91. The second switch 1025 and the second indicator module 1027 are electrically connected to the second main control module 924. The second switch 1025 is used to send a second fan working signal. The second main control module 924 is used to receive the second fan working signal and drive the second boost module 925 to receive and increase the output voltage of the second battery 91 to drive the second motor 52 to work. The second indicator module 1027 is used to display whether the neck fan is on or off.

[0115] With the above structure, the second charging interface 1026 is used to charge the second battery 91, and the second charging control module 921 is used to control the charging of the second battery 91. When the second switch 1025 is turned on, it sends a second fan operating signal. When the second fan operating signal is received, the second main control module 924 drives the second boost module 925 to receive and increase the output voltage of the second battery 91 to drive the second motor 52. The second main control module 924 can also adjust the speed of the second motor 52 by controlling the output voltage of the second boost module 925. The above structural design effectively achieves the effect that after the neck fan is disassembled, the individual part can be used as an independent fan, bringing more flexibility and allowing users to choose the appropriate usage method according to specific needs.

[0116] Example 3

[0117] refer to Figures 19 to 26 This embodiment three provides a neck fan. It can be understood that the above descriptions of embodiments one and two can be basically applied to the neck fan of embodiment three. The following mainly describes the key parts of embodiment three and the differences from embodiments one and two.

[0118] The neck fan includes a neck body 1, which includes a first main body portion 101, a second main body portion 102, a connector 103 connecting the first main body portion 101 and the second main body portion 102, a first fan assembly 3 disposed at one end of the first main body portion 101 away from the connector 103, and a second fan assembly 5 disposed at one end of the second main body portion 102 away from the connector 103.

[0119] The connector 103 is detachably connected to both the first main body part 101 and the second main body part 102. The first main body part 101 is detachably connected to the first fan assembly 3, and the second main body part 102 is detachably connected to the second fan assembly 5. Thus, all five parts of the neck fan are detachably connected, forming a modular design. This not only facilitates assembly but also reduces assembly and maintenance costs. Furthermore, users can disassemble, assemble, store, and DIY their own devices, improving the user experience.

[0120] The first main body portion 101 has an arc-shaped structure, including a concave first air guide 12 disposed on one side surface of the first main body portion 101 and extending along the extension direction of the arc-shaped structure. The first fan assembly 3 is disposed at one end of the first main body portion 101 and is used to blow air toward the first air guide 12. The first air guide 12 is used to guide the air from the first fan assembly 3 to one side of the first main body portion 101 (i.e., the side of the user's neck) and the end of the first main body portion 101 away from the first fan assembly 3 (such as the back of the user's neck).

[0121] The second main body portion 102 has an arc-shaped structure, including a concave second air guide 13 disposed on one side surface of the second main body portion 102 and extending along the extension direction of the arc-shaped structure. The second fan assembly 5 is disposed at both ends of the second main body portion 102 and is used to blow air toward the second air guide 13. The second air guide 13 is used to guide the air from the second fan assembly 5 to one side of the second main body portion 102 (i.e., the other side of the user's neck) and the end of the second main body portion 102 away from the second fan assembly 5 (such as the back of the user's neck).

[0122] Furthermore, the first main body 101 and the first fan assembly 3 can also be assembled into one unit to form the first fan body, and the second main body 102 and the second fan assembly 5 can also be assembled into one unit to form the second fan body. Thus, a neck fan can be disassembled into two fan bodies for use according to the user's needs. It can be understood that when used as a neck fan, the fan body and the other fan body are respectively positioned on either side of the user's neck. Disassembling a neck fan into two fan bodies according to the user's needs enriches usage scenarios, facilitates storage, and enhances the user experience.

[0123] In some embodiments, the first fan body and the second fan body are manufactured independently and then assembled together using an assembly process. This configuration allows the two fan bodies to form a modular design, which not only facilitates assembly but also reduces assembly and maintenance costs. Furthermore, users can disassemble, assemble, repair, store, and even design their own fans, thus improving the user experience.

[0124] The first fan assembly 3 includes a cylindrical first fan housing 31, which is detachably connected to the neck hanger body 1 and located in the first receiving cavity 15. The first fan housing 31 has a third air inlet 311 and a third air outlet 313.

[0125] With the above structure, since the first fan housing 31 is cylindrical, the neck fan forms a vertically blowing direct-blowing fan. The first fan assembly 3 can drive airflow from the third air inlet 311 through the third air outlet 313 along the first air guide path 12 to the user's neck, greatly improving the blowing efficiency. When using the neck fan, the user can more directly feel the cool air blowing directly onto their neck, improving the overall performance of the fan. Furthermore, since the first fan housing 31 and the neck hanger body 1 can be disassembled and assembled, they can be processed and assembled separately during the production process, improving production efficiency, reducing production costs, and facilitating storage and transportation, thus improving the product's portability.

[0126] In this embodiment, the first main body portion 101 of the neckband body 1 has a plurality of connecting slots 151 on its inner side near the first receiving cavity 15, and the outer wall of the first fan housing 31 has a plurality of connecting buckles 315 that match and engage with the connecting slots 151. The first fan housing 31 and the neckband body 1 are detachably connected by the buckles. Specifically, the connecting slots 151 are symmetrically distributed on the inner side of the neckband body 1, with six sets of connecting slots 151, and two connecting slots 151 in each set; the connecting buckles 315 are symmetrically distributed on the outer wall of the first fan housing 31, with six sets of connecting buckles 315, and two connecting buckles 315 in each set. With the above structure, the user can manually install or remove the first fan housing 31 from the neckband body 1. The six sets of buckle engagement structure ensure the firmness of the splicing and prevent the first fan housing from detaching during wear and use, thus improving the safety and convenience of the neckband fan.

[0127] In this embodiment, the first main body portion 101 of the neck hanger body 1 is detachably connected to the outer side away from the first receiving cavity 15 with a first outer cover 16. Similar to Embodiment 1, the first main body portion 101 of the neck hanger body is provided with a first mounting cavity 1014, the first power supply component 8 is located in the first mounting cavity 1014, the first mounting cavity 1014 has an opening, and the first outer cover 16 is detachably closed with the opening.

[0128] In this embodiment, the first fan assembly 3 further includes a first motor 32 and a first fan blade 33 mounted on the shaft of the first motor 32.

[0129] The first fan housing 31 may include a housing body 31a, an air inlet cover 31b, a metal mesh 3111, and an air outlet cover 31c.

[0130] The first fan blade 33 and the first motor 32 are both installed in the housing body 31a. Specifically, the housing body 31a includes a cylindrical side wall structure 310a, a mounting part 310b located at one end of the side wall structure 310a, and an air guide part 310c connecting the mounting part 310b and the side wall structure 310a. The first fan blade 33 and the first motor 32 are disposed in the side wall structure 310a and located on one side of the mounting part 310b. The first motor 32 is mounted on the mounting part 310b.

[0131] The air guide section 310c includes multiple spaced air guide blades 310d, used to guide the air from the first fan blade 33 in a preset direction. Specifically, the thickness of each air guide blade 310d can gradually increase along the direction from the first fan blade 33 to the third air outlet 313, thereby achieving a better air guiding effect. The air inlet cover 31b can be annular, and the air inlet cover 31b can be sleeved on one end of the housing body 31a. Specifically, the outer side of one end of the housing body 31a can have a stepped groove 31f, and the air inlet cover 31b is sleeved and installed in the stepped groove 31f, so that after installation, the outer side of the air inlet cover 31b is flush with the outer side of the housing body 31a. The metal mesh 3111 can be installed on the inner side of the air inlet cover 31b.

[0132] The third air inlet 311 is provided on the metal mesh 3111. The third air inlet 311 includes multiple air inlet holes 311a, each of which can be circular, and the diameter of the multiple air inlet holes 311a can be the same. The diameter of each air inlet hole 311a can be in the range of 0.5mm to 4mm. This size can prevent hair or other objects from getting into the first fan assembly 3. It can be understood that the metal mesh 3111 is thin and lightweight, which is beneficial to the miniaturization and weight reduction of the product. In addition, since it is made of metal, the size of the air inlet holes of the metal mesh 3111 can be set to be small, thereby effectively preventing foreign objects from entering the first fan assembly 3.

[0133] The third air outlet 313 includes a plurality of air outlet holes 3130 disposed on the air outlet shroud 31c. Specifically, the air outlet shroud 31c includes an annular wall structure 31g, a mounting structure 31h, and a plurality of air-concentrating ring plates 3131. The plurality of air-concentrating ring plates 3131 are connected between the annular wall structure 31g and the mounting structure 31h, and the plurality of air outlet holes 3130 are defined between the plurality of air-concentrating ring plates 3131.

[0134] The inner surface of the annular wall structure 31g is an inclined or arc-shaped surface, so that the inner diameter of the annular wall structure 31g gradually decreases along the direction from the third air inlet 311 to the third air outlet 313, thereby pressurizing the blown air and increasing the air outlet intensity. The mounting structure 31h includes an annular mounting wall 31i, a cover plate 31j connecting the mounting wall 31i, and a mounting post 31k connecting the inner side of the cover plate 31j. The mounting post 31k connects to the mounting part 310b. Specifically, the mounting post 31k can be detachably inserted into the mounting hole of the mounting part 310b, so that the air outlet cover 31c and the housing body 31a form a detachable connection. The cover plate 31j is circular and located in the middle of the plurality of air outlets 3130. The outer surface of the cover plate 31j may have a groove for converging the air outlet.

[0135] The mounting structure 31h is further provided with a first alignment structure 31m, and the mounting part 310b has a second alignment structure 31n. The first alignment structure 31m and the second alignment structure 31n cooperate to realize the alignment assembly of the housing body 31a and the air outlet hood 31c. The first alignment structure 31m and the second alignment structure 31n can be one, two or more. Specifically, one of the first alignment structure 31m and the second alignment structure 31n can be an alignment hole, and the other can be an alignment post that mates with the alignment hole.

[0136] The metal mesh 3111 prevents hair or debris from being sucked into the first fan housing, avoiding damage to the fan assembly and reducing the fan's airflow. The concentrator ring 3131 concentrates the airflow directed towards the neck, improving airflow performance.

[0137] The first main body 101 also includes at least one air guide 101h, which is disposed in the first air guide path 12 and adjacent to the first fan assembly 3, for guiding the airflow of the first fan assembly 3.

[0138] In this embodiment, there are two air guide vanes 101h, which are respectively arranged on both sides of the first air guide path 12, and the distance between the two air guide vanes 101h gradually increases along the air outlet direction of the first air guide path 12.

[0139] In this embodiment, a first conductive through hole 152 is provided on the inner side of the neckband body near the first receiving cavity 15. The first conductive through hole 152 is used for the wires of the first fan assembly 3 to pass through and communicate with the first power supply assembly 8. The mounting part 310b may have an opening 310e, through which the wires connecting the motor can extend and then be connected to the first power supply assembly 8 via the first conductive through hole 152.

[0140] With the above structure, when it is necessary to assemble the neck fan, firstly open the first outer cover 16, then pass the wire of the first fan assembly 3 through the first conductive through hole 152 and connect it to the first power supply assembly 8 in the first mounting cavity 1014. Then close the first outer cover 16. After the wire of the first fan assembly 3 is connected, connect the first fan housing to the neck body through the connection buckle 315 and the connection slot 151. Finally, a direct-blowing neck fan that is conductive to the neck body 1 and easy to install is obtained.

[0141] In this embodiment, the lower end of the second main body portion 102 of the neck hanger body is further recessed into a second receiving cavity 17 on the side opposite to the first receiving cavity 15; it also includes a second fan assembly 5, which includes a cylindrical second fan housing 51. The second fan housing 51 is detachably connected to the neck hanger body and located within the second receiving cavity 17. The second fan housing 51 has a fourth air inlet 511 and a fourth air outlet 513. The second fan assembly 5 is used to drive airflow from the fourth air inlet 511 through the fourth air outlet 513 to the inner end. Through the above structure, similarly, since the second fan housing 51 is cylindrical, the neck hanger fan forms a vertically blowing direct-blowing fan. The second fan assembly can drive airflow from the fourth air inlet 511 through the fourth air outlet 513 to the inner end 11, greatly improving the blowing efficiency. When using the neck hanger fan, the user can more directly feel the cool wind blowing directly to the neck, improving the overall performance of the fan. Furthermore, since the second fan housing 51 and the neck hanger body 1 can be disassembled and assembled, they can be processed and assembled separately during the production process, which improves production efficiency, reduces production costs, and facilitates storage and transportation, thus improving the portability of the product.

[0142] In this embodiment, the second main body portion 102 of the neck hanger body is provided with a plurality of connecting slots 151 on the inner side near the second receiving cavity 17, and the outer wall of the second fan housing 51 is provided with a plurality of connecting buckles 315 that match and engage with the connecting slots 151. The second fan housing 51 and the neck hanger body 1 are detachably connected by the buckles. Specifically, the connecting slots 151 are symmetrically distributed on the inner side of the second main body portion 102 of the neck hanger body, and there are six sets of connecting slots 151, with two connecting slots 151 in each set; the connecting buckles 315 are symmetrically distributed on the outer wall of the first fan housing, and there are six sets of connecting buckles 315, with two connecting buckles 315 in each set.

[0143] In this embodiment, a second outer cover 18 is detachably connected to the outer side of the second main body portion 102 of the neck hanger body away from the second receiving cavity 17. Similar to Embodiment 1, the second main body portion 102 of the neck hanger body 1 is provided with a second mounting cavity 1024, the second power supply component 9 is located in the second mounting cavity 1024, the second mounting cavity 1024 has an opening, and the second outer cover 18 is detachably closed with the opening.

[0144] Furthermore, the specific structure of the second fan assembly 5 can be the same as that of the first fan assembly 3, including a second motor 52 and a second fan blade 53 mounted on the shaft of the second motor; the structure of the second fan housing 51 can be basically the same as that of the first fan housing 31, such as including a housing body 31a, an air inlet cover 31b, a metal mesh 3111, and an air outlet cover 31c, wherein the fourth air inlet 511 can also include multiple air inlet holes 311a disposed on the metal mesh 3111 of the second fan housing 51. The fourth air outlet can also include multiple air outlet holes 3130 disposed on the air outlet cover 31c of the second fan housing 51. The specific structure of the second main body part 102 can be the same as that of the first main body part 101, and the second main body part 102 and the first main body part 101 can be symmetrically arranged, and the second fan assembly 5 and the first fan assembly 3 can also be symmetrically arranged, and the specific structure of the second fan housing 51 and the second main body part 102 will not be described again here.

[0145] In this embodiment, a second conductive through hole 171 is provided on the inner side of the neck hanger body near the second receiving cavity 17. The second conductive through hole 171 is used for the wires of the second fan assembly 5 to pass through and to communicate with the second power supply assembly 9.

[0146] With the above structure, after assembling the first fan housing 31, the second fan housing 51 is installed in the same way. First, the second outer cover 18 is opened, and then the wires of the second fan assembly 5 are passed through the second conductive through hole 171 and connected to the second power supply assembly 9 in the second mounting cavity 1024. Then, the second outer cover 18 is closed. After the wires of the second fan assembly 5 are connected, the second fan housing 51 is spliced ​​to the neck hanger body 1 by the snap-fit ​​of the connecting buckle 315 and the connecting slot 151, and finally a direct-blowing neck hanger fan that is conductive to the neck hanger body 1 and easy to install is obtained.

[0147] It is understood that the inner sides of the first outer cover 16 and the second outer cover 18 have at least one first fastener 160, and the outer sides of the first main body 101 and the second main body 102 have at least one second fastener 1010. The first fastener 160 and the second fastener 1010 engage to achieve the assembly of the first outer cover 16 and the first main body 101, as well as the assembly of the second outer cover 18 and the second main body 102. Specifically, there can be multiple first fasteners 160 and second fasteners 1010, such as 160a, 160b, 160c, 160d and 101a, 101b, 101c, 101d. The structures of the multiple first fasteners 160a, 160b, 160c, 160d can be different, and the multiple second fasteners 101a, 101b, 101c, 101d are structures that engage with the multiple first fasteners.

[0148] It is understood that both the first fan assembly 3 and the second fan assembly 5 are direct-blowing fan assemblies with air intake and exhaust on the same axis. In the first fan assembly 3, the air intake cover 31b, the first fan blade 33, the first motor 32, the housing body 31a, and the air outlet cover 31c are all arranged in a straight line. In the second fan assembly 5, the air intake cover 31b, the second fan blade 53, the first motor 32, the housing body 31a, and the air outlet cover 31c are all arranged in a straight line. This allows the first fan assembly 3 and the second fan assembly 5 to have greater airflow and better airflow effect.

[0149] Furthermore, as can be seen from Embodiment 1 and Embodiment 2, the fan body and the other fan body can each have corresponding and independent switches 1015 and 1025, so that the opening and closing of the fan body and the other fan body are independently controlled by the corresponding switches 105 and 1025.

[0150] Furthermore, such as Figure 27As shown, in a modified embodiment of Example 3, the air inlet 3110 of the metal mesh 311 can also be a regular hexagon, with multiple air inlets 3110 forming a honeycomb pattern. Adjacent air inlets 3110 share the same enclosure wall 311a. This design maximizes the air intake area of ​​the metal mesh 311, minimizes its weight, reduces wind resistance, and maximizes the air intake volume. Specifically, the width of the enclosure wall is in the range of 0.05mm-2mm.

[0151] The above description provides one or more embodiments in conjunction with specific content, but it is not intended that the specific implementation of this utility model is limited to these descriptions. Any methods or structures that are similar to or identical to those of this utility model, or any technical deductions or substitutions made based on the concept of this utility model, should be considered within the scope of protection of this utility model.

Claims

1. A neck fan, characterized in that, The neck fan includes: The main body of the first fan; and The second fan body is connected to the first fan body. The first fan body and the second fan body are used to blow air towards the user, and the first fan body and the second fan body are respectively equipped with a control switch, which is used to control the operation of the first fan body and / or the second fan body.

2. The neck fan as described in claim 1, characterized in that, The second fan body and the first fan body are disposed opposite each other and are respectively disposed on both sides of the user's neck; the second fan body and the first fan body have the same structure.

3. The neck fan as described in claim 1, characterized in that, The first fan body further includes a first fan assembly, a first power supply assembly, and a first switch. The first body portion has a first mounting cavity. The first power supply assembly is disposed in the first mounting cavity and electrically connected to the first fan assembly. The first power supply assembly includes a first battery and a first circuit board. The first switch and the first battery are both electrically connected to the first circuit board. A first main control module is provided on the first circuit board. The first switch is mounted on the first body and electrically connected to the first main control module. The first switch is used to start or stop the first fan assembly. The first fan body further includes a first charging interface and a first charging control module. The first charging interface and the first charging control module are used to charge the first battery. The first fan body also includes a first status indicator module. The first status indicator module is used to display at least one of the following: start status, stop status, charging status, and output wind speed level of the first fan body or the neck fan.

4. The neck fan as described in claim 3, characterized in that, The first fan body further includes a first battery protection module, which is electrically connected to the first main control module and the first charging control module for charging protection of the first battery; the first switch includes a stepless adjustment key, which is used to control the speed of the first fan body; the stepless adjustment key is a potentiometer or encoder with variable resistance; the stepless adjustment key includes multiple connection terminals and at least one adjustment pin, one of the multiple connection terminals is grounded, and at least one adjustment pin is used for user operation to cause the other connection terminals to output corresponding stepless adjustment signals.

5. The neck fan as described in claim 3, characterized in that, The first fan body also includes a first boost module. The first switch is used to send a first fan working signal. When the first fan working signal is received, the first main control module is used to drive the first boost module to receive and increase the output voltage of the first battery to drive the first fan assembly to work. The first main control module is also used to control the output voltage of the first boost module to control the speed of the first fan assembly.

6. The neck fan as described in claim 5, characterized in that, The first boost module includes an inductor and a switching element. The control terminal of the MCU of the first main control module is connected to the control terminal of the switching element. The first conducting terminal of the switching element is connected to the first battery via the inductor, and the second conducting terminal of the switching element is grounded. The first conducting terminal of the switching element is connected to the first fan assembly. The MCU of the first main control module controls the switching element to turn on and off, thereby controlling the voltage from the first battery to be boosted through the inductor, and the boosted voltage is provided to the first fan assembly to drive the first fan assembly to blow air. The second fan body also includes a second fan body, a second fan assembly, a second power supply assembly, and a second switch. The second power supply assembly includes a first... The first main control module is provided on the second circuit board, which contains two batteries and a second circuit board. The second switch and the second battery are electrically connected to the second circuit board. The second main control module is mounted on the second main body and electrically connected to the second main control module. The second switch is used to start or stop the fan body. The second fan body also includes a second boost module. The second switch is used to send a second fan working signal. When the second fan working signal is received, the second main control module is used to drive the second boost module to receive and increase the output voltage of the second battery to drive the second fan assembly to work. The first main control module is also used to control the output voltage of the second boost module to control the speed of the second fan assembly.

7. The neck fan as described in claim 6, characterized in that, The first main body is provided with a first conductive terminal, and the second main body is provided with a second conductive terminal. When the first fan body and the second fan body are connected as one unit, the first conductive terminal and the second conductive terminal are connected in communication. Thus, the first switch is electrically connected to the first main control module and the second main control module respectively, and the second switch is electrically connected to the first main control module and the second main control module respectively, so that at least one of the first switch and the second switch can send a third fan working signal. The first main control module is used to receive the third fan working signal and drive the first boost module to increase the output voltage of the first battery to drive the first fan assembly to work. The second main control module is used to receive the third fan working signal and drive the second boost module to increase the output voltage of the second battery to drive the second fan assembly to work.

8. The neck fan as described in claim 1, characterized in that, The first fan body and the second fan body are manufactured independently and then assembled together using an assembly process. The first fan body and the second fan body are detachably connected, allowing them to work and be used independently. The neck fan also includes a connector, which includes a flexible connecting part. The flexible connecting part has at least one mounting hole, which is used to fit and fix one end of the first fan body and one end of the second fan body, so that the first fan part and the second fan part are connected through the flexible connecting part. The inner sidewall of the at least one mounting hole is provided with a first anti-detachment structure and a second anti-detachment structure. The first anti-detachment structure is used to engage with a first snap-fit ​​on the outer surface of one end of the first fan body, and the second anti-detachment structure is used to engage with a second snap-fit ​​on one end of the second fan body. At least one of the first anti-detachment structure and the first snap-fit ​​includes a plurality of protruding and concave structures arranged sequentially along the extension direction.

9. The neck fan according to claim 8, characterized in that, The first anti-detachment structure includes a plurality of first slots arranged along the extension direction of the connector, for engaging with a plurality of protrusions arranged along the extension direction of the first buckle; the second anti-detachment structure includes a plurality of second slots arranged along the extension direction, for engaging with a plurality of protrusions arranged along the extension direction of the second buckle; the first anti-detachment structure is detachably connected to the first buckle, and the second anti-detachment structure is detachably connected to the second buckle; the flexible connecting part also includes a first fixing structure and a second fixing structure, the first fixing structure and the second fixing structure are respectively arranged at both ends of the flexible connecting part, the first fixing structure is connected to a third fixing structure of one end of the first fan body, and the second fixing structure is connected to a fourth fixing structure of one end of the second fan body; the first fixing structure is detachably connected to the third fixing structure, and the second fixing structure is detachably connected to the fourth fixing structure; the connector also includes at least one neck support, the at least one neck support is connected to the inner side of the flexible connecting part near the human neck, the at least one neck support is used to form at least one air inlet gap between itself and the first fan part or the second fan part, so that the air from the first fan part or the second fan part can enter the air inlet gap.

10. The neck fan as described in claim 3, characterized in that, The first fan body includes: a first main body portion, the first main body portion having an arc-shaped structure, including a concave first air guide path disposed on one side surface of the first main body portion and extending along the extension direction of the arc-shaped structure; a first fan assembly disposed at one end of the first main body portion and used to blow air toward the first air guide path, the first air guide path being used to guide the airflow of the first fan assembly to one side of the first main body portion and the end of the first main body portion away from the first fan assembly; the first fan assembly includes a first fan housing, a first motor, and a first fan blade mounted on the shaft of the first motor, the first motor and the first fan blade being disposed in the first fan housing, the first fan housing including a housing body and an air outlet shroud, the air outlet shroud being disposed on one side of the housing body, the air outlet shroud including a plurality of air-gathering rings and an annular wall structure connected to the periphery of the plurality of air-gathering rings, the plurality of air-gathering rings defining a plurality of... The air outlet, wherein the air-gathering ring plate is used to pressurize the air from the housing body and blow it out in conjunction with the inner surface of the ring wall structure; the inner surface of the ring wall structure is an inclined surface or an arc surface, such that the inner diameter of the ring wall structure gradually decreases along the direction from the housing body to the air outlet cover; the housing body includes a ring-shaped side wall structure, a mounting part located at one end of the side wall structure, and an air guide part connecting the mounting part and the side wall structure, the air guide part including a plurality of spaced air guide blades for directing the air from the first fan blade in a preset direction, the first fan blade and the first motor being disposed within the side wall structure and located on one side of the mounting part, the first motor being mounted on the mounting part; the first fan housing also includes a metal mesh, the metal mesh being disposed on the side of the side wall structure away from the air outlet cover, the metal mesh having a plurality of air inlets, each air inlet having an inner diameter in the range of 0.5mm to 4mm; The air inlet is a regular hexagon, and two adjacent air inlets share the same enclosure, the width of which is in the range of 0.05mm-2mm.

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