Waist hanging fan

Abstract

The waist hanging fan comprises a shell, a fan assembly, a control assembly, a battery and a port assembly, and the battery is electrically connected with the control assembly; the port assembly is electrically connected with the control assembly and comprises a first port and a second port, and the first port is used for being connected with first external equipment so as to supply power to and / or charge the waist hanging fan; and the second port is used for being connected with second external equipment so as to supply power to the second external equipment and / or charge the second external equipment. Compared with the prior art, the waist-hanging fan is provided with a first port and a second port, and the first port is used for being connected with first external equipment so as to supply power to and / or charge the waist-hanging fan; the second port is used for being connected with a second external device so as to supply power to and / or charge the second external device, so that the waist hanging fan has the external charging and power supply functions, the user experience is good, and the market competitiveness is high.

Description

Technical Field

[0001] This application relates to the field of fan technology, and in particular to a waist-mounted fan. Background Technology

[0002] In recent years, people have increasingly pursued a more convenient lifestyle. To meet the demand for practical fans in outdoor activities and other daily life scenarios, various portable fans have emerged on the market, such as handheld fans and neck-hanging fans. Handheld fans require holding the hand, which is inconvenient for users when they need to hold other objects, such as when riding the subway or making a phone call. Neck-hanging fans can solve the limitations of handheld fans, but they are not very friendly to people with cervical spine problems, causing neck discomfort. Waist-hanging fans have comprehensively solved the above problems, but currently, most waist-hanging fans on the market have simple functions and cannot meet the personalized needs of modern people, resulting in poor sales in the waist-hanging fan market. Utility Model Content

[0003] The main purpose of this application is to propose a waist-hanging fan that aims to improve the user experience of waist-hanging fans.

[0004] To achieve the above objectives, this application provides a waist-mounted fan, including a housing, a fan assembly, a control assembly, a battery, and a port assembly. The battery is electrically connected to the control assembly; the port assembly is electrically connected to the control assembly and includes a first port and a second port. The first port is used to connect to a first external device to supply power and / or charge the waist-mounted fan; the second port is used to connect to a second external device to supply power and / or charge the second external device.

[0005] Compared with the prior art, the embodiments of this application provide a waist-hanging fan with a first port and a second port. The first port is used to connect a first external device to supply power and / or charge the waist-hanging fan; the second port is used to connect a second external device to supply power and / or charge the second external device, so that the waist-hanging fan has the function of charging and supplying power to external devices, resulting in a better user experience and stronger market competitiveness. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0007] Figure 1 This is a perspective view of the waist-mounted fan according to an embodiment of this application.

[0008] Figure 2 This is a perspective view of the waist-mounted fan according to an embodiment of this application from another angle.

[0009] Figure 3 This is a perspective view of the waist-mounted fan according to another embodiment of this application.

[0010] Figure 4 This is an exploded view of the waist-mounted fan according to an embodiment of this application.

[0011] Figure 5 This is an exploded view of the waist-mounted fan according to an embodiment of this application from another angle.

[0012] Figure 6 This is a perspective view of the main housing of the waist-mounted fan according to an embodiment of this application.

[0013] Figure 7 This is a perspective view of the main housing of the waist-mounted fan according to an embodiment of this application.

[0014] Figure 8 This is a cross-sectional view of the waist-mounted fan according to an embodiment of this application.

[0015] Figure 9 This is a schematic diagram of the support state of the waist-mounted fan according to an embodiment of this application.

[0016] Figure 10 This is a schematic diagram of the charging and discharging management circuit and overvoltage protection circuit of the waist-mounted fan according to an embodiment of this application;

[0017] Figure 11 This is a schematic diagram of the main control circuit of the waist-mounted fan according to an embodiment of this application;

[0018] Figure 12 This is a schematic diagram of the first light-emitting element of the light-emitting assembly of the waist-mounted fan according to an embodiment of this application;

[0019] Figure 13 This is a schematic diagram of the fan control circuit of the waist-mounted fan according to an embodiment of this application;

[0020] Figure 14 This is a schematic diagram of the indicator light circuit of the waist-mounted fan according to an embodiment of this application.

[0021] Figure 15 This is a schematic diagram of the battery protection circuit of the waist-mounted fan according to an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figures 1 to 7 This utility model provides a waist-mounted fan 1, which includes a housing 10, a fan assembly 20, a light-emitting assembly 30, and a control assembly 40. The housing 10 has a storage cavity 11, an air inlet 12 communicating with the storage cavity 11, and an air outlet 13 communicating with the storage cavity 11; the fan assembly 20 is located in the storage cavity 11 and is used to guide the air from the air inlet 12 to the air outlet 13; the control assembly 40 is electrically connected to the light-emitting assembly 30 and is used to control the light-emitting assembly 30 to emit different colors of dazzling light and / or flashing light for warning purposes.

[0024] It is understandable that users can use the waist-mounted fan 1 to cool down and improve comfort during hot weather. The fan assembly 20 of the waist-mounted fan 1 is located in the storage cavity 11, which is a semi-enclosed space. During the process of the fan assembly 20 guiding the air from the air inlet 12 to the air outlet 13, the air guiding path of the fan assembly 20 is not affected by the outside air, making the air guiding more concentrated, thereby improving the air output effect, accelerating the cooling speed, and saving energy. At the same time, the waist-mounted fan 1 in this embodiment is also equipped with the light-emitting component 30, which can emit different colors of dazzling light under the control of the control component 40, making the waist-mounted fan 1 cooler and meeting the personalized needs of modern people, increasing the entertainment value of the waist-mounted fan 1. In addition, the light-emitting component 30 can also emit flashing lights for warning under the control of the control component 40, so that users can use the waist-mounted fan 1 to warn others when they are in danger or in special situations, ensuring their own safety. The waist-mounted fan 1 in this embodiment, by setting the light-emitting component 30, allows users to control the waist-mounted fan 1 to emit different colors of dazzling light and / or flashing light for warning in different usage scenarios, making the waist-mounted fan 1 more widely used, while meeting users' personalized usage needs, improving user experience, and increasing market demand.

[0025] Specifically, the different colored dazzling lights include a first color light, a second color light, and / or a marquee effect light. The first color light and the second color light are different and are both single-color lights. The marquee effect light includes flashing light that continuously switches colors according to a predetermined program or set data. It can be understood that when a user uses the waist-mounted fan 1, they can control the waist-mounted fan 1 to flash the first color light, or flash the second color light, or control the first and second color lights to switch and flash according to a certain pattern, making the waist-mounted fan 1 more entertaining and personalized, meeting the consumption needs of different groups.

[0026] Furthermore, the light-emitting component 30 includes at least one first light-emitting element 31, which is located in the storage cavity 11. The outer shell 10 has a light-transmitting area 14 corresponding to the at least one first light-emitting element 31. The light from the at least one first light-emitting element 31 is emitted from the outer shell 10 through the light-transmitting area 14, thereby forming the dazzling light of different colors.

[0027] Specifically, the at least one first light-emitting element 31 includes a light source assembly 311 capable of emitting multiple different colors of light. The light source assembly 311 includes at least two sub-light sources 312 of different colors, each individually controlled and switched. Each sub-light source 312 emits one color of light, thus enabling the light source assembly 311 to emit multiple different colors of light. The number of the at least one first light-emitting element 31 is multiple, with each first light-emitting element 31 including a light source assembly 311 capable of emitting multiple different colors of light. These multiple first light-emitting elements 31 are arranged sequentially along a preset direction. By setting one first light-emitting element 31 corresponding to one light source assembly 311, and each light source assembly 311 including multiple individually controllable sub-light sources 312, and with multiple first light-emitting elements 31, the fault tolerance of the light-emitting assembly 30 is enhanced. When one first light-emitting element 31 fails, it does not affect the operation of other first light-emitting elements 31, and the overall function of the light-emitting assembly 30 remains normal, thus extending the lifespan of the waist-mounted fan 1 and providing a better user experience.

[0028] Further, the outer casing 10 includes a main casing 15 with an opening 151, the light-transmitting area 14 is located in the opening 151, and the light-transmitting area 14 includes a lampshade 141 mounted in the opening 151; the lampshade 141 is a semi-transparent cover; the lampshade 141 includes a cover portion 142 located in the opening 151 and a mounting portion 143 connecting the cover portion 142 near at least one first light-emitting element 31, the light-emitting assembly 30 also includes a light-emitting element circuit board 313, the at least one first light-emitting element 31 is disposed on the surface of the light-emitting element circuit board 313 near the lampshade 141; the mounting portion 143 and the light-transmitting area 151 are connected in a semi-transparent manner. The light-emitting element circuit board 313 is connected; the mounting part 143 and the cover part 142 form a stepped part 144, the main housing 15 is locked to the stepped part 144, so that the cover part 142 is fixed in the opening 151, and the mounting part 143 contacts the inner surface of the main housing 15; one of the mounting part 143 and the light-emitting element circuit board 313 has a first fixing part 87, and the other of the mounting part 143 and the light-emitting element circuit board 313 has a second fixing part 314, the first fixing part 87 and the second fixing part 314 are fixedly connected so that the mounting part 143 is fixed to the light-emitting element circuit board 313. In this embodiment, the cover portion 142 of the lampshade 141 is inserted into the opening 151 of the main housing 15, so that the cover portion 142 is fixed in the opening 151. The main housing 15, the mounting portion 143 and the cover portion 142 form the stepped portion 144 for locking, so that the lampshade 141 is stably fixed on the main housing 15. At the same time, the mounting portion 143 and the light-emitting element circuit board 313 are fixed by the first fixing portion 87 and the second fixing portion 314, so that the installation of the entire light-emitting assembly 30 is simple, compact and stable and firm.

[0029] Furthermore, the light-emitting component 30 also includes a second light-emitting element 32, which is used to emit the flashing light for warning in the first light-emitting mode; the second light-emitting element 32 is also used to emit illumination light in the second light-emitting mode; the flashing light for warning is a white flashing light, and the illumination light is a white light; at least one first light-emitting element 31 is disposed on a first side of the housing 10, and the second light-emitting element 32 is disposed on a second side of the housing 10 different from the first side; the first side and the second side are opposite sides. It can be understood that the waist-mounted fan 1 also has illumination and warning functions. When a user needs to use the waist-mounted fan 1 for illumination, the waist-mounted fan 1 can be set to enter the second light-emitting mode, thereby causing the second light-emitting element 32 to continuously emit white illumination light. When a user is in a special environment and needs to attract or alert others, the waist-mounted fan 1 can be set to enter the first light-emitting mode, thereby causing the second light-emitting element 32 to flash white light. By setting the second light-emitting element 32, in conjunction with setting the first and second light-emitting modes, the waist-mounted fan 1 can have both illumination and warning functions, making it more practical.

[0030] Further, the control component 40 includes a first control key 41 and a main circuit board 42. The first control key 41 is disposed on the housing 10 and electrically connected to the main circuit board 42. The main circuit board 42 is electrically connected to the light-emitting component 30. The first control key 41 is operated by a user to control the light emission of the light-emitting element. When the first control key 41 performs a first operation, a first control signal is generated. The main circuit board 42 controls the on / off state or the light emission color of at least one first light-emitting element 31 according to the first control signal. When the first control key 41 performs a second operation, a second control signal is generated. The main circuit board 42 controls the on / off state or the light emission mode of the second light-emitting element 32 according to the second control signal. One of the first operation and the second operation is a short press operation with a first operation time, and the other of the first operation and the second operation is a long press operation with a second operation time, wherein the second operation time is longer than the first operation time. In this embodiment, the first operation and the second operation can be distinguished by the pressing time of the first control key 41. The first operation is a long press operation with a second operation time, and the second operation is a short press operation with a first operation time. Specifically, the short press operation with the first operation time is a short press operation of 1 second, and the long press operation with the second operation time is a long press operation of 1 to 3 seconds.

[0031] It is understood that when a user uses the waist-mounted fan 1, they can press and hold the first control button 412 seconds for about 2 seconds. At this time, at least one first light-emitting element 31 is turned on, and at the same time, the sub-light source 312 of one color emits light of that color. Press and hold the first control button 412 again for about 2 seconds. At this time, the sub-light source 312 of the other color is turned on and emits light of another color. Press and hold the first control button 412 again for about 2 seconds. At this time, both sub-light sources 312 of the two colors are turned on and flash light alternately to form the marquee effect. Press and hold the first control button 412 again for about 2 seconds. All sub-light sources 312 of all colors are turned off, and at least one first light-emitting element 31 does not emit light. The above is the operation description of the first light-emitting element 31 with two different colors of light in this embodiment. The first light-emitting element 31 can also have more than two colors. Its operation is similar to the above embodiment and will not be described again here. When a user needs to use the waist-mounted fan 1 for lighting, they can quickly press the first control button 41. At this time, the second light-emitting element 32 enters the second light-emitting mode and turns on, continuously emitting white light. When a user needs to use the waist-mounted fan 1 for warning purposes, they can quickly press the first control button 41 again. This time, the second light-emitting element 32 switches to the first light-emitting mode, flashing white light to warn nearby others. When the user quickly presses the first control button 41 again, the second light-emitting element 32 turns off and does not emit light. By setting the first control button 41 and using long and short presses to turn the first and second light-emitting elements 31 and 32 on and off, and select their light-emitting state and mode, the operation is simple, fast, and provides a better user experience.

[0032] Furthermore, the control component 40 also includes a second control key 43, which is disposed on the housing 10 and electrically connected to the main circuit board 42. The second control key 43 is operated by the user to control the opening, closing, or rotation speed of the fan assembly 20. The first control key 41 includes a first trigger portion 411 disposed on the main circuit board 42, and the second control key 43 includes a second trigger portion 431 disposed on the main circuit board 42. The first control key 41 and the second control key 43 share the same operation key plate 44. The housing 10 has a button hole 16, and the operation key plate 44 is mounted in the button hole 16. The first end 441 of the operation key plate 44 corresponds to the first trigger portion 411, and the second end 442 of the operation key plate 44 corresponds to the second trigger portion 431. When the first end 441 is operated, the first trigger portion 411 is triggered, thereby emitting the first control signal. When the second end 442 is operated, the second trigger portion 431 is triggered, thereby emitting the second control signal. It is understood that when using the waist-mounted fan 1 for fanning, the user can press the second control key 43 to control the fan assembly 20 to turn on, off, or adjust its speed. By setting the first control key 41 and the second control key 43, the user can independently operate the fan assembly 20 and the first light-emitting element 31 and the second light-emitting element 32 when using the waist-mounted fan 1. That is, the user can operate the light-emitting function of the waist-mounted fan 1 to turn on, off, or switch modes without affecting the fan function of the fan assembly 20, and can also operate the fan assembly 20 to turn on, off, or adjust its speed without affecting the light-emitting state of the first light-emitting element 31 and the second light-emitting element 32. The operation is more convenient and simple. Moreover, the first control key 41 and the second control key 43 share the same operation keypad 44, making the structure of the waist-mounted fan 1 simpler and more compact, making the operation more convenient for the user, and providing a better user experience.

[0033] Further, the outer casing 10 includes a top plate 17, a bottom plate 18, and a side plate structure 19 connecting the top plate 17 and the bottom plate 18. The first control key 41 and the second control key 43 are both disposed on the side plate structure 19. The main circuit board 42 is disposed adjacent to the side plate structure 19 and extends along the direction from the bottom plate 18 to the top plate 17. The second light-emitting element 32 is disposed on the side plate structure 19. The waist-mounted fan 1 also includes a port assembly 50, which is exposed via an opening 81 on the outer casing 10 for connection to other electronic devices via an external data cable. The port assembly 50, the second light-emitting element 32, the first control key 41, and the second control key 43 are all disposed on the same side of the side plate structure 19. The port assembly 50, the second light-emitting element 32, and the operation keypad 44 are arranged in the direction from the bottom plate 18 to the top plate 17. The outer casing 10 also has a recess 82, and the opening 81 is disposed in the recess 82. The waist-mounted fan 1 also includes a sealing element 61. The sealing member 61 is movably connected to the housing 10 and is used to switch between a sealed state located in the recess 82 and an open state detached from the recess 82. In the sealed state, the sealing member 61 covers the recess 82 to cover the opening 81. In the open state, the port assembly 50 is exposed through the opening 81. The waist-mounted fan 1 also includes a battery 62 electrically connected to the main circuit board 42. The waist-mounted fan 1 also includes a display assembly 63 electrically connected to the main circuit board 42. The display assembly 63 is used to display the wind speed level of the fan assembly 20 and / or the remaining power of the battery 62. At least a portion of the display assembly 63 is exposed through a display opening 83 on the housing 10. The display assembly 63 includes a display element 64 connected to the main circuit board 42 and a light-transmitting plate 65 mounted on the display opening 83. The display element 64 emits display light through the light-transmitting plate 65. The display opening 83 is located on the top plate 17. The sealing member 61 is made of a flexible material. By setting the groove portion 82 and the sealing element 61, dust and moisture can be isolated, protecting the port component 50 for safe use, while not affecting the integrity of the overall structure of the waist-mounted fan 1. In addition, by setting the display component 63, users can monitor the current usage status of the waist-mounted fan 1, resulting in a better user experience.

[0034] Furthermore, the outer casing 10 includes a main casing 15 and an air outlet 85 connected to the main casing 15. The air outlet 85 includes an annular inner wall 851 surrounding the air outlet 13. The annular inner wall 851 extends along the air outlet 13's air outlet direction, which is the direction from the air inlet 12 to the air outlet 13. The air inlet 12 and the air outlet 13 are arranged opposite to each other. The fan assembly 20 is located between the air inlet 12 and the air outlet 13. The fan assembly 20 is an axial flow fan assembly 20 and is arranged in the direction from the air inlet 12 to the air outlet 13. By setting the fan assembly 20 to an axial flow fan assembly 20, and arranging the air outlet 13, the air inlet 12, and the fan assembly 20 on the same axis, the waist-mounted fan 1 can generate a larger airflow and achieve higher airflow efficiency.

[0035] Further, please refer to Figure 8 As shown, the fan assembly 20 includes a fan housing 21 and a fan blade assembly 22. The fan housing 21 has a cavity 211, and the fan blade assembly 22 is located in the cavity 211 and installed in the fan housing 21. The fan housing 21 includes a circumferential sidewall structure 212 and a top wall 213 connected to the sidewall structure 212. The top wall 213 has a plurality of first air-concentrating plates 214 arranged in a ring, and a plurality of first air outlets 215 are formed between the plurality of first air-concentrating plates 214. The fan assembly 20 also includes an air-concentrating element 221, which is disposed on the top wall 213. The air-concentrating element 221 includes a plurality of second air-concentrating plates 222 arranged in a ring, and a plurality of second air outlets 223 are formed between the plurality of first air-concentrating plates 214. The wind concentrator 221 further includes a wind concentrator protrusion 224 protruding 941 towards the side away from the fan housing 21, the outer surface of the wind concentrator protrusion 224 being a partially spherical surface with an arc-shaped cross-section; the fan assembly 20 further includes a pressure booster 225, the pressure booster 225 being disposed on the side of the air outlet 13 near the fan blade assembly 22, the inner diameter of the pressure booster 225 gradually decreasing along the air outlet 13 air outlet direction; the pressure booster 225 is connected between the air outlet 85 and the wind concentrator 221; the inner diameter of the end of the pressure booster 225 near the air outlet 85 is equal to the inner diameter of the portion of the air outlet 85 near the pressure booster 225, so that the inner surface of the pressure booster 225 and the inner surface of the air outlet 85 are smoothly connected. By setting the top wall 213, the air concentrator 221, and the pressure booster 225, the air from the fan assembly 20 can pass through the first air outlet 215 and the second air outlet 223, and then be pressurized and blown out at the pressure booster 225. This enhances the airflow while reducing the temperature of the airflow, achieving a rapid cooling effect. This makes the airflow from the waist-mounted fan 1 stronger, quickly improves human comfort, increases airflow efficiency, and provides a better user experience.

[0036] Furthermore, the air outlet 85 also includes a top annular wall 852 connecting the inner annular wall 851 and an outer wall 853 connecting the top annular wall 852 and surrounding the inner annular wall 851. The outer wall 853 is connected to the main housing 15. The top annular wall 852 has annular patterns 854, and the outer wall 853 protrudes from the inner annular wall 851 along the air outlet direction of the air outlet 85. The inner diameter of the inner annular wall 851 is between 1.5 cm and 5 cm. By setting the structure of the inner annular wall 851, the top annular wall 852 with annular patterns 854, and the outer wall 853 of the air outlet 85, the airflow of the waist-mounted fan 1 can be made smoother, and the airflow at the air outlet 13 can be concentrated, improving airflow efficiency and achieving the effect of quickly improving human comfort.

[0037] Furthermore, the main housing 15 also has a first lanyard hole 152 for connecting a first lanyard; the main housing 15 also has a second lanyard hole 153 for connecting a second lanyard; the first lanyard hole 152 and the second lanyard hole 153 are both located on the side of the air outlet 13 of the outer casing 10, and the first lanyard hole 152 and the second lanyard hole 153 are respectively located on both sides of the air outlet. It is understood that the first lanyard hole 152 and the second lanyard hole 153 of the waist-hanging fan 1 provide users with multiple ways to hang the fan, allowing users to wear the waist-hanging fan 1 in different ways. For example, by hanging the lanyard in one of the first lanyard hole 152 or the second lanyard hole 153, the waist-hanging fan 1 can be hung around the neck or arm for easy carrying. Alternatively, both lanyards can be hung in the first lanyard hole 152 and the second lanyard hole 153 respectively, allowing the waist-hanging fan 1 to be hung around the neck or waist for easy carrying, while also serving as a neck-hanging fan or a waist-hanging fan, freeing up the hands. By setting the first lanyard hole 152 and the second lanyard hole 153, the waist-hanging fan 1 is not only easy to carry, but also provides users with multiple usage methods, making it more flexible and convenient to use, and providing a better user experience.

[0038] Furthermore, the waist-hanging fan 1 also includes a first clamping member 91, and the outer shell 10 includes a clamping member fixing hole 88. The first clamping member 91 includes a fixing end 911, a connecting part 912 connecting the fixing end 911, and a clamping part 913 connecting the connecting part 912. The clamping part 913 and the fixing end 911 are arranged opposite to each other. The clamping part 913 is used to form a first clamping space with the outer shell 10 to clamp a first external object. The waist-hanging fan 1 also includes a support member 92. The support member 92 is rotatably connected to the first clamping member 91, so that the support member 92 can switch between a storage state that is stacked relative to the first clamping member 91 and a support state that is at a preset angle relative to the first clamping member 91. In the support state, the support member 92 and the outer shell 10 together support the waist-hanging fan 1 on the external object. It is understood that the first clamping member 91 can clamp a first external object, connecting the waist-mounted fan 1 to the first external object. For example, the first clamping member 91 can be clamped onto a belt, thus fixing it around the waist to provide airflow to the user. It can also be clamped onto a collar or other location to provide airflow to the user. In addition, the support member 92 can be in a supporting state at a preset angle relative to the first clamping member 91. Therefore, the user can rotate the support member 92 relative to the first clamping member 91 to a preset angle to make the support member 92 in a supporting state. Figure 9 As shown, the fan can be placed on a flat surface such as a desktop for support. When not in use, the support member 92 and the outer shell 10 together support the waist-hanging fan 1 on an external object. The support member 92 rotates and overlaps relative to the first clamping member 91, so that the support member 92 is in a stored state, which is convenient for storage or clamping. By setting the first clamping member 91 and the support member 92, the waist-hanging fan 1 can also be clamped to or supported on an external object, expanding the application range of the waist-hanging fan 1 and making the product more competitive.

[0039] Furthermore, the first clamping member 91 is made of metal, and the bracket member 92 is made of metal; the waist-mounted fan 1 also includes a second clamping member 93, which is connected to the side of the outer shell 10 away from the first clamping member 91. The second clamping member 93 is used to form a second clamping space with the outer shell 10 to clamp a second external object; the clamping directions of the first clamping space and the second clamping space are opposite; the second clamping member 93 and the part of the outer shell 10 connected to the second clamping member 93 are made of the same material and are integrally formed, or the part of the second clamping member 93 and the part of the outer shell 10 connected to the second clamping member 93 are separately formed and then connected as one piece. It is understood that the second clamping member 93 of the waist-hanging fan 1 and the outer shell 10 form a second clamping space for clamping a second external object, and the clamping direction of the first clamping space of the first clamping member 91 is opposite. Therefore, it can be clamped on a second external object with a different direction from the first external object, so that the air outlet 13 of the waist-hanging fan 1 can still face the user, further expanding the application range of the waist-hanging fan 1 and improving the user experience. By setting the second clamping member 93, the waist-hanging fan 1 can also be clamped on a second external object, delivering air from a direction opposite to the clamping direction of the first clamping member 91, expanding the application range of the waist-hanging fan 1 and making it more flexible and convenient for the user. At the same time, the second clamping member 93 and the part of the outer shell 10 that connects to the second clamping member 93 are made of the same material and are integrally formed, or the part of the second clamping member 93 and the part of the outer shell 10 that connects to the second clamping member 93 are separately formed and then connected as one piece, making the overall structure of the waist-hanging fan 1 simple and compact.

[0040] Furthermore, the waist-hanging fan 1 also includes a flexible protective sleeve 94, which is fitted onto the outer surface 86 of the outer casing 10. The outer surface 86 includes a main surface 861 and a recessed surface 862 that connects to the main surface 861 and is recessed inward. The flexible protective sleeve 94 is disposed in the groove 863 of the recessed surface 862, and the outer surface 86 of the flexible protective sleeve 94 is flush with the main surface 861. An embedding hole 864 is also formed on the recessed surface 862, and a protrusion 941 is provided on the inner side of the flexible protective sleeve 94, which extends into the embedding hole 864. By providing the flexible protective sleeve 94, the waist-hanging fan 1 can be effectively protected in case of accidents such as falling, and it can also play a certain role in preventing slippage, making it easier for users to grip the waist-hanging fan 1.

[0041] Further, the outer casing 10 includes a first casing 154 and a second casing 155, which are disposed opposite to each other and form the storage cavity 11. The first casing 154 and the second casing 155 are fixedly connected together by a snap fastener 891 and / or a screw (not shown). When the first casing 154 and the second casing 155 are fixed together by the screw, the screw hole 893 is disposed on the groove surface 862 and is covered by the flexible protective sleeve 94. In this embodiment, the screw hole 893 can be integrated with part of the embedding hole 864. That is, after the first casing 154 and the second casing 155 are fixed by the screw, the protrusion 941 of the flexible protective sleeve 94 extends into the embedding hole 864, which not only fixes the flexible protective sleeve 94 but also covers the screw hole 893. By setting the first housing 154 and the second housing 155, and fixing the first housing 154 and the second housing 155 together with the buckle 891 and / or screws, the waist-hanging fan 1 is easy to disassemble and install during production, maintenance and other processes. At the same time, the screw holes 893 of the screws are covered by the flexible protective sleeve 94, which not only makes the waist-hanging fan 1 more beautiful, but also protects the screws.

[0042] Furthermore, the port assembly 50 of the waist-hanging fan 1 includes a first port 51 and a second port 52. The first port 51 is used to connect a first external device to supply power and / or charge the waist-hanging fan 1; the second port 52 is used to connect a second external device to supply power and / or charge the second external device. By setting the first port 51 and the second port 52, the waist-hanging fan 1 can supply power and / or charge the first external device and the second external device through the first port 51 and the second port 52, thereby increasing the functionality of the waist-hanging fan 1, expanding its application range, and improving its product competitiveness.

[0043] Further, please refer to Figure 10-15As shown, the control component 40 includes a charge / discharge management circuit 71, which includes a power input terminal, a battery 62 (e.g., BAT) charging terminal, and a discharging terminal. The power input terminal is connected to the first port 51 (e.g., USB1) to receive external voltage, and the discharging terminal is connected to the second port 52 to supply power and / or charge the second external device through the second port 52 (e.g., USB2). The battery 62 charging terminal is connected to the battery 62 of the waist-mounted fan 1. The control component 40 also includes an overvoltage protection circuit 72, the feedback terminal of which is connected to the first port 51, and the input terminal of the overvoltage protection circuit 72 is connected to the first port 51. The input terminal is connected to the battery 62 to obtain the operating voltage; the light-emitting component 30 includes a plurality of first light-emitting elements 31, which are connected in series to form a series circuit; each first light-emitting element 31 includes a power supply pin, an input pin, an output pin, and a ground pin; the power supply pin of the plurality of first light-emitting elements 31 is used to receive the power supply voltage, the input pin of the first light-emitting element 31 located at one end of the series circuit also receives the power supply voltage, the output pin of each first light-emitting element 31 is connected to the input pin of the next adjacent first light-emitting element 31, and the output pin of the first light-emitting element 31 located at the other end of the series circuit is floating.

[0044] Furthermore, the control component 40 also includes a fan control circuit 73, a boost circuit 74, and a main control circuit 75. The battery 62 is electrically connected to the fan assembly 20 through the boost circuit 74. The fan control circuit 73 includes a first switch 731, the first conducting terminal of which is connected to the boost circuit 74, the second conducting terminal of which is grounded, and the control terminal of which is connected to the main control circuit 75. The main control circuit 75 is used to output a PWM control signal to the control terminal of the first switch 731. The control component 40 also includes an indicator light circuit 76. The indicator light circuit 76 is connected between the battery 62 and ground. The indicator light circuit 76 includes an indicator light D4 and a second switch Q6 connected in series with the indicator light D4. The control terminal of the second switch Q6 is connected to the main control circuit 75. The control component 40 also includes a battery protection circuit 77, which includes a third switch Q8 and a fourth switch Q9. The two conducting terminals of the third switch Q8 are respectively connected between the battery 62 and the first port 51. The control terminal of the third switch Q8 is grounded through the fourth switch Q9. The control terminal of the fourth switch Q9 is connected to the main control circuit 75.

[0045] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A waist-mounted fan, characterized in that, include: The outer casing has a storage cavity, an air inlet communicating with the storage cavity, and an air outlet communicating with the storage cavity; A fan assembly, located in the receiving cavity, is used to direct the air from the air inlet to the air outlet; Control components; The battery is electrically connected to the control component; as well as The port assembly, electrically connected to the control assembly, includes a first port and a second port. The first port is used to connect a first external device to power and / or charge the waist-mounted fan; the second port is used to connect a second external device to power and / or charge the second external device.

2. The waist-mounted fan as described in claim 1, characterized in that, The waist-mounted fan also includes a light-emitting component, which includes a first light-emitting element and a second light-emitting element. The control component includes a first control key and a main circuit board. The first control key is disposed on the housing and is electrically connected to the main circuit board. The main circuit board is electrically connected to the light-emitting component. The first control key is operated by the user to control the light emission of the light-emitting component. When the first control key performs a first operation, a first control signal is generated. The main circuit board controls the on / off state or the light emission color of at least one of the first light-emitting elements according to the first control signal. When the first control key performs a second operation, a second control signal is generated. The main circuit board controls the on / off state or the light emission mode of the second light-emitting element according to the second control signal. One of the first operation and the second operation is a short press operation with a first operation time, and the other of the first operation and the second operation is a long press operation with a second operation time, wherein the second operation time is longer than the first operation time.

3. The waist-mounted fan as described in claim 2, characterized in that, The control component further includes a second control key, which is disposed on the housing and electrically connected to the main circuit board. The second control key is operated by the user to control the fan assembly to turn on, off, or rotate. The first control key includes a first trigger portion disposed on the main circuit board, and the second control key includes a second trigger portion disposed on the main circuit board. The first and second control keys share the same operation keypad. The housing has button holes, and the operation keypad is mounted in the button holes. A first end of the operation keypad corresponds to the first trigger portion, and a second end of the operation keypad corresponds to the second trigger portion. When the first end is operated, the first trigger portion is triggered to emit the first control signal. When the second end is operated, the second trigger portion is triggered to emit the second control signal.

4. The waist-mounted fan as described in claim 3, characterized in that, The housing includes a top plate, a bottom plate, and a side plate structure connected between the top plate and the bottom plate. The first control key and the second control key are both disposed on the side plate structure. The main circuit board is disposed adjacent to the side plate structure and extends in the direction from the bottom plate to the top plate. The second light-emitting element is disposed on the side plate structure. The port assembly is exposed through an opening in the housing to facilitate connection to other electronic devices via an external data cable.

5. The waist-mounted fan as described in claim 4, characterized in that, The port assembly, the second light-emitting element, the first control key, and the second control key are all located on the same side of the side panel structure. The port assembly, the second light-emitting element, and the operation keypad are arranged in the direction from the bottom plate to the top plate. The outer casing also has a recessed portion, and the opening is located in the recessed portion. The waist-mounted fan also includes a sealing member, which is movably connected to the outer casing and is used to switch between a sealed state located in the recessed portion and an open state detached from the recessed portion. In the sealed state, the sealing member covers the recessed portion to cover the opening. In the open state, the port assembly is exposed through the opening. The battery is electrically connected to the main circuit board.

6. The waist-mounted fan as described in claim 5, characterized in that, The waist-mounted fan also includes a display component electrically connected to the main circuit board. The display component is used to display the fan speed setting and / or the remaining battery power. At least a portion of the display component is exposed through a display opening on the housing. The display component includes a display element connected to the main circuit board and a light-transmitting plate mounted on the display opening. The display element emits display light through the light-transmitting plate. The display opening is located on the top plate. The sealing element is made of a flexible material.

7. The waist-mounted fan as described in claim 2, characterized in that, The control component includes a charge / discharge management circuit, which includes a power input terminal, a battery charging terminal, and a discharging terminal. The power input terminal is connected to the first port to receive external voltage, and the discharging terminal is connected to the second port to supply power and / or charge the second external device through the second port. The battery charging terminal is connected to the battery of the waist-mounted fan.

8. The waist-mounted fan as described in claim 7, characterized in that, The control component further includes an overvoltage protection circuit, the feedback terminal of which is connected to the first port, and the input terminal of which is connected to the battery to obtain the operating voltage. The light-emitting component includes a plurality of first light-emitting elements, which are connected in series to form a series circuit. Each first light-emitting element includes a power supply pin, an input pin, an output pin, and a ground pin. The power supply pin of the plurality of first light-emitting elements is used to receive the power supply voltage, and the input pin of the first light-emitting element located at one end of the series circuit also receives the power supply voltage. The output pin of each first light-emitting element is connected to the input pin of the next adjacent first light-emitting element, and the output pin of the first light-emitting element located at the other end of the series circuit is floating.

9. The waist-mounted fan as described in claim 8, characterized in that, The control assembly further includes a fan control circuit, a boost circuit, and a main control circuit. The battery is electrically connected to the fan assembly through the boost circuit. The fan control circuit includes a first switch. The first conducting terminal of the first switch is connected to the boost circuit, the second conducting terminal of the first switch is grounded, and the control terminal of the first switch is connected to the main control circuit. The main control circuit is used to output a PWM control signal to the control terminal of the first switch.

10. The waist-mounted fan as described in claim 9, characterized in that, The control component further includes an indicator light circuit connected between the battery and ground. The indicator light circuit includes an indicator light and a second switch connected in series with the indicator light. The control terminal of the second switch is connected to the main control circuit. The control component also includes a battery protection circuit, which includes a third switch and a fourth switch. The two conducting terminals of the third switch are respectively connected between the battery and the first port. The control terminal of the third switch is grounded via the fourth switch. The control terminal of the fourth switch is connected to the main control circuit.

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