Waist hanging fan

Abstract

The utility model provides a waist hanging fan and a fan assembly. The waist hanging fan comprises a shell, a fan assembly, a power supply assembly and a first clamping device. The shell is provided with a containing cavity, an air inlet and an air outlet, and the air outlet, at least part of the containing cavity and the air inlet are sequentially communicated in the first preset direction. The fan assembly is located in the containing cavity and located between the air inlet and the air outlet and used for driving airflow to flow from the air inlet to the air outlet. The power supply assembly is located in the containing cavity, the power supply assembly and the projection of the fan assembly are staggered in the first preset direction, and the power supply assembly is electrically connected with the fan assembly so as to supply power to the fan assembly. The first clamping device is connected with one side of the shell and used for forming a clamping space for clamping an external object with the shell so that the waist hanging fan can be fixed to the external object.

Description

Technical Field

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

[0002] A fan is a household appliance that uses an electric motor to drive blades to rotate, thereby accelerating air circulation. It is primarily used for cooling and air circulation, and is widely used in homes, classrooms, offices, shops, hospitals, and hotels. Traditional fans are relatively large and inconvenient to carry. With scientific advancements, improved fans have become increasingly smaller. However, waist-mounted fans on the market still have shortcomings. For example, people cannot always hold a fan while working outdoors, thus failing to achieve the goal of using a fan for cooling while working. Therefore, there is an urgent need for a waist-mounted fan that can provide cooling while freeing up the hands, offering users a more convenient and comfortable experience. Furthermore, improving fan efficiency and increasing portability are also important issues in the fan industry. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a waist-mounted fan that can free up the hands while providing cooling and is easy for users to carry. This utility model also provides a fan assembly with higher airflow efficiency to improve the airflow efficiency of the waist-mounted fan using the aforementioned fan assembly.

[0004] In a first aspect, one embodiment of the present invention provides a waist-mounted fan, comprising: a housing having a receiving cavity, an air inlet, and an air outlet, wherein the air outlet, at least a portion of the receiving cavity, and the air inlet are sequentially connected along a first preset direction; a fan assembly located in the receiving cavity and between the air inlet and the air outlet, for driving airflow from the air inlet to the air outlet; a power supply assembly located in the receiving cavity, the power supply assembly being projected offset from the fan assembly along the first preset direction, and the power supply assembly being electrically connected to the fan assembly to supply power to the fan assembly; and a first clamping device connected to one side of the housing and for forming a clamping space with the housing for clamping an external object, thereby fixing the waist-mounted fan to the external object.

[0005] In one embodiment, the housing has a first side, a second side, and a third side, the first side and the second side are disposed opposite to each other, the air outlet is disposed on the first side, the air inlet is disposed on the second side, the third side is located between the first side and the second side and is adjacent to both the first side and the second side, and the first clamping device extends along the first preset direction and is connected to the third side of the housing.

[0006] In one embodiment, the housing further has a fourth side, a fifth side, and a sixth side, the fourth side being disposed opposite to the third side, the fifth side being disposed opposite to the sixth side, the direction from the fifth side to the sixth side being a second preset direction, and the fan assembly and the power supply assembly being arranged sequentially along the second preset direction.

[0007] In one embodiment, the waist-mounted fan further includes a second clamping device, characterized in that the second clamping device is connected to the fourth side of the housing, and the second clamping device is also used to form a clamping space with the housing to clamp an external object, so as to fix the waist-mounted fan to the external object; the first clamping device is connected to the third side of the housing near the air outlet, the second clamping device is connected to the fourth side of the housing near the air inlet, and the second clamping device extends in the opposite direction to the first clamping device.

[0008] In one embodiment, the direction from the third side to the fourth side is a third preset direction, and the maximum diameter of the housing along the second preset direction is greater than the maximum diameter of the housing along the third preset direction; a first hook is also provided at the end of the fifth side of the housing near the air outlet, and both ends of the first hook are connected to the fifth side of the housing and form a first hook hole with the housing; a second hook is also provided at the end of the sixth side of the housing near the air outlet, and both ends of the second hook are connected to the sixth side of the housing and form a second hook hole with the housing.

[0009] In one embodiment, the fan assembly is provided with at least one first latching member, and the inner side of the housing is provided with at least one second latching member. The at least one first latching member and the at least one second latching member cooperate to fix the fan assembly in the receiving cavity of the housing. The number of the at least one first latching member is multiple, and the number of the at least one second latching member is multiple. The multiple first latching members are respectively provided on both sides of the fan assembly. The first latching member is one of a protrusion and a groove, and the second latching member is the other of a protrusion and a groove. The protrusion includes a hook portion.

[0010] In one embodiment, the fan assembly includes a motor, a fan blade, and an output shaft, the fan blade is mounted on the output shaft, the fan assembly is an axial flow fan assembly, and the output shaft is arranged along the first preset direction.

[0011] In one embodiment, the fan assembly further includes a fan housing, which includes a housing body, an air outlet shroud, and a mesh screen. The motor and fan blades are both disposed in the housing body. The air outlet shroud is disposed on one side of the housing body and has multiple air outlet holes. The air outlet shroud is also located at the air outlet. The mesh screen is disposed on the other side of the housing body. The air outlet shroud includes multiple wind-gathering rings and an annular wall structure connected to the periphery of the multiple wind-gathering rings. The mesh screen includes multiple air inlets. Multiple air outlet holes are defined between the multiple wind-gathering rings. The multiple 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.

[0012] In one embodiment, the inner surface of the annular wall structure is an inclined surface or an arc-shaped surface, so that the inner diameter of the annular wall structure gradually decreases along the first preset direction; the mesh is a metal mesh, and the metal mesh is provided with multiple air inlets, the inner diameter of each air inlet being in the range of 0.5mm to 4mm.

[0013] In one embodiment, 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.

[0014] In one embodiment, the air outlet shroud further includes an installation structure connecting the plurality of air-gathering rings. The installation structure includes an annular installation wall, a cover plate connected to the installation wall, and a first installation post connected to the inner side of the cover plate. The installation post is installed corresponding to the installation holes of the housing body. The cover plate is located in the middle of the plurality of air outlet holes, and the outer surface of the cover plate has a groove. The installation structure is also provided with a first alignment structure, and the housing body has a second alignment structure. The first alignment structure and the second alignment structure cooperate to realize the alignment assembly of the housing body and the air outlet shroud.

[0015] In one embodiment, the housing body includes a circumferential sidewall structure, a mounting portion located at one end within the sidewall structure, and an air guide portion connected between the mounting portion and the sidewall structure. The air guide portion includes a plurality of spaced-apart air guide blades for directing airflow from the blades in a preset direction. The blades and the motor are disposed within the sidewall structure and located on one side of the mounting portion. The motor is mounted on the mounting portion. The mounting portion has an opening through which a wire connecting the motor extends out through the opening and then out through the gap between the housing body and the air outlet shroud to connect to the control component.

[0016] In one embodiment, the mounting portion further includes a blind hole facing the motor, the opening of the blind hole facing the side where the motor is located, and the blind hole is used to store the oil required for the rotation of the output shaft; the mounting portion includes a mounting plate and a second mounting post connected to the mounting plate and extending toward the partition, the blind hole being disposed on the second mounting post; the motor has a motor mounting hole, the motor mounting hole being fitted onto the second mounting post so that the motor is mounted on the second mounting post, the blind hole also being provided with a fixing post with a through hole and a limiting ring, and the output shaft including a main shaft connected to the fan blade. The device includes a body and a limiting part connecting the body. The output shaft passes through the fixed post and the limiting ring, and the limiting part is located at the end of the limiting ring away from the fixed post. The limiting part includes a rod and a limiting end connecting the rod to the end away from the blade. The diameter of the limiting end gradually decreases in the direction away from the blade. The outer surface of the rod, the limiting end, and the body form a limiting groove. The limiting ring has a limiting hole with a diameter greater than the diameter of the rod and smaller than the diameter of the body and the diameter of the limiting end, so that the limiting ring is limited in the limiting groove.

[0017] In one embodiment, the first fan housing further includes an air inlet cover, the mesh is installed inside the air inlet cover, the air inlet cover is disposed at the end of the housing body away from the air outlet cover, the air inlet cover is annular, and the air inlet cover is sleeved on one end of the housing body; the outer side of one end of the housing body may have a stepped groove, the air inlet cover is sleeved on the stepped groove, and the outer side of the air inlet cover is flush with the outer side of the housing body.

[0018] In one embodiment, the housing includes a first part and a second part, the first part and the second part being arranged sequentially along a second preset direction, the edge of the first part being provided with a plurality of first clips, the edge of the second part being provided with a plurality of second clips, the plurality of first clips and the plurality of second clips engaging to connect the first part and the second part together.

[0019] In one embodiment, the housing includes a first part, a second part, and a mounting housing. The first part, the mounting housing, and the second part are arranged sequentially along a second preset direction. The edge of the first part is provided with a plurality of first clips, and the edge of the second part is provided with a plurality of second clips. The mounting housing is provided with a plurality of third clips that engage with the plurality of first clips and a plurality of fourth clips that engage with the plurality of second clips, so that the inner housing, the first part, and the second part are connected as a whole.

[0020] In one embodiment, the inner side of the housing further includes a plurality of air guide plates corresponding to the air inlet. The plurality of air guide plates are located between the air inlet and the fan assembly. Each air guide plate extends along the first preset direction, and the plurality of air guide plates are arranged sequentially along the direction from the third side to the fourth side.

[0021] In one embodiment, the housing includes an outer shell and a mounting housing located within the outer shell. The mounting housing includes a partition plate, and the fan assembly and the power supply assembly are located on opposite sides of the partition plate. The first clamping device is connected to the mounting housing and integrally formed with the mounting housing. The outer shell has a slot, and the portion of the first clamping device connected to the mounting housing is fixed in the slot.

[0022] In one embodiment, the power supply component includes a battery, and the mounting housing further includes at least one limiting fastener that connects to the partition plate and extends toward the battery, the at least one limiting fastener being arranged around the periphery of the battery and fixing the battery; the portable fan further includes a control component located in the receiving cavity and including control buttons and a circuit board electrically connecting the control buttons and the battery, the third side of the housing having a button hole, and the control buttons being provided corresponding to the button hole.

[0023] Secondly, another embodiment of the present invention also provides a fan assembly, including a fan housing, a motor, and a fan blade connected to the motor. The fan blade is disposed in the first fan housing. The fan housing includes a housing body, an air outlet shroud, and a partition. The air outlet shroud is disposed on one side of the housing body and has an air outlet hole. The partition is disposed on the other side of the housing body. The partition includes a plurality of air inlet holes for reducing wind resistance and increasing air intake. 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 plurality of 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.

[0024] The beneficial effects of this utility model are as follows: In the waist-hanging fan provided by this utility model, by setting the power supply component to be offset from the projection of the fan component along the first preset direction, the fan component and the power supply component can be arranged side by side in the receiving cavity of the housing, making the positional layout of the fan component and the power supply component in the housing more reasonable and compact, which is conducive to the miniaturization of the waist-hanging fan and increases its portability. Moreover, the air path formed by the fan component can also be offset from the power supply component, avoiding the situation where the power supply component affects the airflow efficiency of the fan component, so that the waist-hanging fan has higher airflow efficiency, higher airflow force, and better cooling effect. Attached Figure Description

[0025] 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.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a perspective view of the waist-mounted fan according to the first embodiment of this utility model.

[0028] Figure 2 yes Figure 1 The exploded view of the waist-mounted fan shown.

[0029] Figure 3 yes Figure 1 The image shows a cross-sectional view of a waist-mounted fan.

[0030] Figure 4 yes Figure 1 The diagram shows the mounting housing of the waist-mounted fan.

[0031] Figure 5 yes Figure 1 The image shown is a three-dimensional view of the waist-mounted fan from another angle.

[0032] Figure 6 This is a perspective view of the waist-mounted fan according to the second embodiment of this utility model.

[0033] Figure 7 yes Figure 6 The image shown is a 3D view of the waist-mounted fan from another angle.

[0034] Figure 8 yes Figure 6 The exploded view of the waist-mounted fan shown.

[0035] Figure 9 yes Figure 6 The image shown is an exploded view of the waist-mounted fan from another angle.

[0036] Figure 10 yes Figure 6 The image shows a cross-sectional view of a waist-mounted fan.

[0037] Figure 11 yes Figure 6 An exploded view of the fan assembly of the waist-mounted fan shown.

[0038] Figure 12 yes Figure 11 An exploded view of the fan assembly from another angle.

[0039] Figure 13 This is a perspective view of the mesh of the fan assembly of the waist-mounted fan according to the third embodiment of this utility model.

[0040] Figure 14 This is an exploded view of the waist-mounted fan according to the fourth embodiment of this utility model.

[0041] Figure 15 This is an exploded view of the waist-mounted fan according to the fifth embodiment of this utility model.

[0042] Figure 16 This is an exploded view of the waist-mounted fan according to the sixth embodiment of this utility model.

[0043] Figure 17 yes Figure 16 An exploded view of the fan assembly of the waist-mounted fan shown.

[0044] Figure 18 yes Figure 17 An exploded view of the fan assembly from another angle.

[0045] Figure 19 yes Figure 16 The diagram shows a cross-sectional view of the output shaft and blades of the waist-mounted fan in the first limiting position.

[0046] Figure 20 yes Figure 16 The image shows a cross-sectional view of the output shaft and blades of the waist-mounted fan in the second limit position.

[0047] Figure 21 yes Figure 19 Enlarged view of point A in the middle. Detailed Implementation

[0048] refer to Figures 1 to 5 The first embodiment of this utility model provides a waist-mounted fan, which includes a housing 1, a fan assembly 2, a power supply assembly 3, and a mounting housing 4.

[0049] The outer casing 1 is provided with a first air inlet 11, an air outlet 12 and a first air guide cavity 13, and the first air inlet 11, the first air guide cavity 13 and the air outlet 12 are connected in sequence.

[0050] The fan assembly 2 is used to drive airflow from the first air inlet 11 to the air outlet 12.

[0051] The power supply component 3 is electrically connected to the fan assembly 2 to supply power to the fan assembly 2.

[0052] The mounting housing 4 is connected to the outer shell 1. The mounting housing 4 includes a first mounting part 41 and a second mounting part 42. The first mounting part 41 and the second mounting part 42 are integrally formed. The first mounting part 41 is used to mount the fan assembly 2, and the second mounting part 42 is used to mount the power supply assembly 3.

[0053] With the above structure, when the user starts the fan, with the power support of the power supply component 3, the fan component 2 draws air from the first air inlet 11 and blows it towards the human body through the first air guide cavity 13 and the air outlet 12. This design is simple and efficient, which can improve the blowing efficiency. Furthermore, since the mounting housing 4 for the power supply component 3 and the fan component 2 is an integrally molded design, the internal structure of the fan is relatively stable, which greatly reduces the manufacturing cost and enables the mass production of this waist-hanging fan, thus greatly improving production efficiency.

[0054] In this embodiment, a lighting device 5 is also included, and a power supply component 3 is electrically connected to the lighting device 5 to supply power to it. Specifically, the lighting device 5 includes an LED light 51, and the upper end of the mounting housing 4 is provided with a mounting groove 52, in which the LED light 51 is located. This structure enables the waist-mounted fan to have a lighting function, allowing users to enjoy the fan's blowing function while working outdoors on hot summer nights, as well as using the LED light for searching for items or in emergency situations. This increases the multi-functionality of the waist-mounted fan and improves the user experience.

[0055] In this embodiment, the upper end of the first mounting part 41 is provided with an air outlet cover 411, which is connected to the upper end of the outer shell 1. The air outlet cover 411 is provided with a plurality of air outlet holes 412, which are connected to the air outlet 12. Further, the first mounting part 41 is provided with a second air guide cavity 413 and a second air inlet 414, which are sequentially connected to the second air inlet 414, the second air guide cavity 413, and the air outlet holes 412. Specifically, the fan assembly 2 is disposed in the second air guide cavity 413, and the fan assembly 2 is used to drive the gas to pass sequentially through the first air inlet 11, the first air guide cavity 13, the second air inlet 414, the second air guide cavity 413, and the air outlet holes 412 to form a blowing airflow. With the above structure, the fan assembly 2 effectively drives the gas from the first air inlet 11 of the outer shell 1, through the first air guide cavity 13 of the outer shell 1, and then into the second air inlet 414 of the first mounting part 41. After passing through the second air guide cavity 413, the gas is finally blown out of the outer shell 1 through the air outlet 412 and the air outlet 12. This design makes the air inlet and the air outlet in the same direction, which greatly increases the blowing efficiency of the fan and improves the performance of the waist-mounted fan.

[0056] In this embodiment, the fan assembly 2 includes a motor 21, a fan blade 22, and an output shaft 23, with the fan blade 22 connected to the output shaft 23. Through this structure, the motor 21 drives the fan blade 22 to rotate, and the output shaft 23 drives the fan blade 22 to draw in air and blow it onto the human body, effectively realizing the fan's blowing function and improving blowing efficiency.

[0057] In this embodiment, an air inlet cover 6 is also included. The air inlet cover 6 is connected to the lower end of the outer shell 1. The air inlet cover 6 is provided with a plurality of air inlet holes 61, which are connected to the first air inlet 11. With the above structure, the design of the air inlet cover 6 helps to prevent other debris, such as hair, paper scraps and other debris, from being sucked into the fan, which helps to maintain the safety of the fan.

[0058] In this embodiment, a spacer 43 is provided between the first mounting part 41 and the second mounting part 42. The spacer 43 is composed of a plurality of evenly distributed partitions 431. Through this structure, since a plurality of evenly distributed partitions 431 are provided, and since the fan assembly 2 is mounted on the first mounting part 41 and the power supply assembly 3 is mounted on the second mounting part 42, a certain space is provided between the fan assembly 2 and the power supply assembly 3. This prevents the heat dissipated by the battery in the power supply assembly 3 from affecting the fan assembly 2, thus improving the service life of the fan.

[0059] In this embodiment, the second mounting part 42 is provided with a mounting cavity 421, the power supply component 3 includes a battery 32, and the waist-mounted fan also includes a circuit board 31. The circuit board 31 is electrically connected to the battery 32, and both the circuit board 31 and the battery 32 are placed inside the mounting cavity 421. With this structure, since both the circuit board 31 and the battery 32 are placed inside the mounting cavity 421, the structure is compact, reducing installation space, lowering production costs, and making it convenient for users to carry. The second mounting part 42 includes an arc-shaped partition plate 441 and connecting plates 442 connected to both sides of the partition plate 441. The partition plate 441 and the two connecting plates 442 form the mounting cavity 421, and a spacer 43 is disposed on the side of the partition plate 441 near the mounting cavity 421.

[0060] In this embodiment, the upper part of the outer shell 1 is provided with a slot 14, and the first mounting part 41 is provided with a limiting protrusion 415. The limiting protrusion 415 abuts against the slot 14 so that the mounting shell 4 is partially located in the first air guide cavity 13. With the above structure, the first mounting part 41 can be snapped into the outer shell 1, and the air outlet shroud 411 can be exposed at the air outlet 12, which is beneficial for the fan to blow out the air and improve the user experience.

[0061] In this embodiment, the outer shell 1 includes a front panel 101, a rear panel 102 opposite to the front panel 101, and a left panel 103 and a right panel 104 connecting the front panel 101 and the rear panel 102. The front panel 101, the rear panel 102, the left panel 103 and the right panel 104 surround to form a first air guide cavity 13.

[0062] In this embodiment, the first mounting part 41 is connected to a first clamping device 7, which is used to clamp the waist-mounted fan onto the user's clothing. Specifically, the first clamping device 7 is a first spring 71, which presses against the front panel 101 to form a first clamping space 711 between the first spring 71 and the front panel 101. The first spring 71 can be a metal spring or a plastic spring. With this structure, during use, the user can clamp the fan to their waistband or clothing pocket using the first spring 71, allowing the fan to blow air into their body. Compared to traditional handheld fans, this fan with a spring frees up the user's hands, allowing them to feel the air from the fan without holding it while working, thus achieving a cooling experience and greatly improving the product's portability and practicality.

[0063] In this embodiment, the air inlet cover 6 is connected to a second clamping device 8, and the first clamping device 7 is used to clamp the waist-mounted fan onto the user's clothing. Specifically, the second clamping device 8 is a second spring 81, which presses against the back panel 102 to form a second clamping space 811 between the second spring 81 and the back panel 102. The second spring 81 can be a metal spring or a plastic spring. With this structure, during use, after the user clamps the waistband with the first spring 71, they can clamp the second spring 81 onto the hem of the garment, thus stabilizing the fan. Even when the user needs to make large movements due to work, the fan can still be securely fixed at the waistband, greatly ensuring the fan's stability.

[0064] In this embodiment, the surface of the outer casing 1 is also provided with a first hook 105 and a second hook 106. A first hook hole 1051 is formed between the first hook 105 and the left panel 103, and a second hook hole 1061 is formed between the second hook 106 and the right panel 104. With the above structure, when it is inconvenient for the user to clamp the fan to clothing, the user can use a rope to pass through the first hook hole 1051 and the second hook hole 1061, and then hang the rope around the neck, thereby realizing the ability to carry the fan without using both hands, increasing the portability of the fan.

[0065] In this embodiment, the outer casing 1 is also provided with a control button 9, which is electrically connected to the fan assembly 2 and the power supply assembly 3. The air inlet cover 6 is connected to a button mounting part 62, which has a button mounting hole 621, and the control button 9 is located at the button mounting hole 621. The lower end of the outer casing 1 is provided with a first mounting port 15, an inwardly protruding button mounting groove 16, and a second mounting port 17. The button mounting part 62 can be snapped into the button mounting groove 16, and the first mounting port 15, the button mounting hole 621, the button mounting groove 16, and the second mounting port 17 are sequentially connected. The control button 9 is also provided with a fan speed indicator light 91 and a charging indicator light 92. With the above structure, the user can press the control button 9 to start the fan, and the speed indicator light 91 and the charging indicator light 92 are provided. This design is simple and ingenious, and easy for the user to use.

[0066] In this embodiment, the air intake shroud 6 is provided with a charging interface 63 for charging the battery 32. The charging interface 63 includes a DC charging interface or a Type-C charging interface. Through the above structure, the DC charging interface or the Type-C charging interface can meet the charging interface needs of different users, making it convenient for users to charge in a timely manner.

[0067] In this embodiment, the mounting housing 4 and the outer shell 1 are connected by snap-fit, and the air inlet cover 6 is also connected to the outer shell 1 by snap-fit; the outer wall of the outer shell 1 is provided with several anti-slip protrusions 107. Through the above structure, the snap-fit ​​connection makes the fan structure installation more stable and secure, increasing the quality and safety of the product; and the outer wall of the fan's outer shell 1 is provided with several anti-slip protrusions 107, which increases the friction when the fan is clamped at the waistband, preventing the fan from easily falling off.

[0068] Understandable, such as Figures 1 to 5 As shown, the outer shell 1 and the mounting shell 4 together form the shell 1a of the waist-mounted fan. The shell 1a has a receiving cavity 1b for accommodating the power supply component 3, the fan component 2, etc., a first air inlet 11, and an air outlet 12.

[0069] The receiving cavity 1b includes a first air guide cavity 13, an air outlet 12, at least a portion of the receiving cavity (i.e., the first air guide cavity 13), and a first air inlet 11 connected sequentially along a first preset direction XX.

[0070] The fan assembly 2 is located above the first air guide cavity 13 in the receiving cavity 1b and between the first air inlet 11 and the air outlet 12, and is used to drive the airflow from the first air inlet 11 to the air outlet 12.

[0071] The power supply component 3 is located in the receiving cavity. The power supply component 3 includes a battery 31. The battery 31 is projected off from the fan component 2 along a first preset direction XX. The power supply component 3 is electrically connected to the fan component 2 to supply power to the fan component 2.

[0072] The first clamping device 7 is connected to one side of the housing (such as the housing 4) and is used to form a clamping space with the housing 1a for clamping external objects (such as belts, pockets, backpacks, flat or plate-shaped objects) so as to fix the waist fan to the external object.

[0073] It is understandable that by setting the power supply component 3 to be offset from the projection of the fan component 2 along the first preset direction XX, the fan component and the power supply component can be arranged side by side in the housing cavity, making their positional layout within the housing more reasonable and compact. This is beneficial for the miniaturization of the waist-mounted fan and increases its portability. Moreover, the airflow path formed by the fan component can also be offset from that of the power supply component, avoiding the power supply component affecting the fan component's airflow efficiency. This results in higher airflow efficiency and stronger airflow from the waist-mounted fan, leading to better cooling performance.

[0074] Specifically, the housing 1a has a first side 111, a second side 112, a third side 113, a fourth side 114, a fifth side 115 and a sixth side 116.

[0075] The first side 111 and the second side 112 are arranged opposite to each other. The air outlet 12 is located on the first side 111, and the first air inlet 11 is located on the second side 112. The third side 113 is located between the first side 111 and the second side 112 and is adjacent to both the first side 111 and the second side 112. In this embodiment, the first clamping device 7 extends along the first preset direction XX and is connected to the third side 113 of the housing 1a. It can be understood that setting the first clamping device 7 on the third side 113 can avoid the problem of affecting the air intake and exhaust when it is set on the first side or the second side, and effectively ensure the airflow efficiency.

[0076] The fourth side 114 is positioned opposite the third side 113, and the fifth side 115 is positioned opposite the sixth side 116. The direction from the fifth side 115 to the sixth side 116 is the second preset direction YY. The fan assembly 2 and the power supply assembly 3 are arranged sequentially along the second preset direction YY. It can be understood that arranging the fan assembly 2 and the power supply assembly 3 sequentially along the second preset direction YY, while simultaneously providing the first clamping device 7 on the third side 113, makes the overall layout of the waist-mounted fan reasonable and avoids the problem of the first clamping device 7 increasing the length of the waist-mounted fan in the second preset direction YY.

[0077] The second clamping device 8 is connected to the fourth side 114 of the housing 1a. The second clamping device 8 also forms a clamping space with the housing 1a to hold external objects, thus fixing the waist-mounted fan 8 to the external object. The first clamping device 7 is connected to the end of the third side 113 of the housing 1a near the air outlet 12, and the second clamping device 8 is connected to the end of the fourth side 114 of the housing 1a near the first air inlet 11. The second clamping device 8 extends in the opposite direction to the first clamping device 7. It can be understood that the first clamping device 7 and the second clamping device 8 are respectively located on the third side 113 and the fourth side 114. The user can use one of the clamping devices as needed. Furthermore, the opposite extension directions of the first clamping device 7 and the second clamping device 8 also facilitate the user in clamping the waist-mounted fan upwards or downwards onto different external objects.

[0078] Furthermore, the direction from the third side 113 to the fourth side 114 is the third preset direction ZZ, and the maximum diameter of the housing 1a along the second preset direction YY is greater than the maximum diameter of the housing 1a along the third preset direction ZZ; the first hook 105 is disposed on the fifth side 115 of the housing 1a near the air outlet 12, and both ends of the first hook 105 are connected to the fifth side 115 of the housing 1a and form a first hook hole 1051 with the housing 1a; the second hook 106 is disposed on the sixth side 116 of the housing 1a near the air outlet 12, and both ends of the second hook 106 are connected to the sixth side 116 of the housing 1a and form a second hook hole 1061 with the housing 1a.

[0079] Furthermore, in this embodiment, the height of the first mounting part 41 along the first preset direction XX is less than the height of the partition plate 441 along the first preset direction XX, so that the partition plate 441 can block the wind from the first air inlet 11 from entering the side where the power supply component 3 is located, thereby improving the wind efficiency of the waist-mounted fan, and the overall weight of the waist-mounted fan can be smaller. However, it is understood that in a modified embodiment, the height of the first mounting part 41 along the first preset direction XX can also be basically equal to the height of the partition plate 441 along the first preset direction XX.

[0080] Furthermore, such as Figure 2 and Figure 3 As shown, the fan assembly 2 is an axial fan assembly, with the output shaft 23 set along the first preset direction XX. Together with the first air inlet 11 and air outlet 12, which are also located in the first preset direction XX, the waist-mounted fan can form a direct-blowing waist-mounted fan, which can achieve a high wind efficiency and a strong wind force.

[0081] Please see Figures 6 to 12 The second embodiment of this utility model provides a waist-mounted fan, which includes a housing 1a, a fan assembly 2, a power supply assembly 3, a control assembly 3a, a first clamping device 7, and a second clamping device 8.

[0082] The housing 1a includes an outer shell 1 and a mounting housing 4 located within the outer shell 1. The mounting housing includes a partition plate 441, with the fan assembly 2 and the power supply assembly 3 located on opposite sides of the partition plate 441. In this embodiment, the first clamping device 7 is connected to and integrally formed with the mounting housing 4. The outer shell 1 has a slot 14, and the portion of the first clamping device 7 connected to the mounting housing 4 is fixed in the slot 14.

[0083] The outer shell 1 includes a first part 1c and a second part 1d. The first part 1c, the mounting shell 4, and the second part 1d can be arranged sequentially along a second preset direction YY. The edge of the first part 1c is provided with a plurality of first clips 118, and the edge of the second part 1d is provided with a plurality of second clips 119. The mounting shell 4 is provided with a plurality of third clips 401 that engage with the plurality of first clips 118 and a plurality of fourth clips 402 that engage with the plurality of second clips 119, so that the inner shell 4, the first part 1c, and the second part 1d are connected as one unit.

[0084] The inner side of the housing 1a (such as the side of the partition plate near the fan assembly 2) also includes multiple air guide plates 117 corresponding to the air inlet 11. The multiple air guide plates 117 are located between the air inlet 11 and the fan assembly 2. Each air guide plate 117 can extend along a first preset direction XX, and the multiple air guide plates 117 can be arranged sequentially along the direction from the third side 113 to the fourth side 114. The multiple air guide plates 117 can not only guide the air intake, but also improve the appearance of the waist-mounted fan.

[0085] The partition plate 441 has an arc-shaped surface on the side facing the fan assembly 2. At least one first fastener 201 is provided on the outer side of the fan assembly 2, and at least one second fastener 108 is provided on the inner side of the housing 1a (such as the surface of the partition plate 441 near the fan assembly 2). The at least one first fastener 201 and the at least one second fastener 108 cooperate to fix the fan assembly 2 in the receiving cavity 1b of the housing 1a, i.e., on the partition plate 441. There are multiple first fasteners 201 and multiple second fasteners 108. Multiple first fasteners 201 are respectively provided on both sides of the fan assembly 2. The first fastener 201 is one of a protrusion and a groove, and the second fastener 108 is the other of a protrusion and a groove. The protrusion includes a hook portion 202.

[0086] The mounting housing 4 also includes at least one limiting fastener 443 that connects to the partition plate 441 and extends toward the battery 31. The at least one limiting fastener 443 is arranged around the periphery of the battery 31 and fixes the battery 31. In this embodiment, there are multiple limiting fasteners 443.

[0087] The control component 3a is located in the receiving cavity 1b and includes a control button 33 and a circuit board 32 that electrically connects the control button 33 and the battery 31. The fourth side 114 of the housing 1a has a button hole 1130. The control button 33 is provided corresponding to the button hole 1130 and is exposed through the button hole 1130.

[0088] The fan assembly 2 includes a motor 21, a fan blade 22 and a fan housing 24. The fan blade 22 is mounted on the output shaft 23 of the motor 21, and both the motor 21 and the fan blade 22 are located in the fan housing 24.

[0089] The fan housing 24 includes an air inlet cover 28, a housing body 25, an air outlet cover 26, and a partition net 27. The motor 21 and the fan blades 22 are both located in the housing body 25. The air outlet cover 26 is located on one side of the housing body 25 and has multiple air outlet holes 260. The air outlet cover 26 is also located at the air outlet 12 of the housing 1a. The partition net 27 is located on the other side of the housing body 25 and is used to correspond to the air inlet 11. The air outlet cover 26 includes multiple wind-gathering rings 261 and an annular wall structure 262 connected to the periphery of the multiple wind-gathering rings 261. The partition net 27 includes multiple air inlets 270. Multiple air outlet holes 263 are defined between the multiple wind-gathering rings 261. The multiple wind-gathering rings 261 are used to pressurize the air from the housing body 25 and blow it out after cooperating with the inner side of the annular wall structure 262.

[0090] The inner surface of the ring wall structure 262 is an inclined surface or an arc-shaped surface, so that the inner diameter of the ring wall structure 262 gradually decreases along the direction from the air inlet 11 to the air outlet 12, thereby giving the blown air a pressurizing effect and increasing the air outlet intensity.

[0091] Specifically, the housing body 25 includes a cylindrical side wall structure 251, a third mounting part 252 located at one end inside the side wall structure 251, and a guide part 253 connecting the third mounting part 252 and the side wall structure 251. The fan blade 22 and the motor 21 are disposed inside the side wall structure 251 and located on one side of the third mounting part 252. The motor 21 is mounted on the third mounting part 252.

[0092] The air guide section 253 includes multiple spaced-apart air guide blades 2531, used to guide the air from the fan blade 22 in a preset direction. Specifically, the thickness of each air guide blade 2531 can gradually increase along the direction from the fan blade 22 to the air outlet 12, thereby achieving a better air guiding effect. The air inlet cover 28 can be annular, and the air inlet cover 28 can be fitted onto one end of the housing body 25. Specifically, the outer side of one end of the housing body 25 can have a stepped groove 250, and the air inlet cover 28 is fitted onto the stepped groove 250, so that after installation, the outer side of the air inlet cover 28 is flush with the outer side of the housing body 25. The mesh 27 can be installed inside the air inlet cover 28. The air inlet cover 28 can be snapped together with the housing body 25.

[0093] The air outlet shroud 26 also includes a mounting structure 264 connecting multiple air-gathering rings 261. The mounting structure 264 includes an annular mounting wall 265, a cover plate 266 connecting the mounting wall 265, and a first mounting post 267 connected to the inner side of the cover plate 266. The first mounting post 267 connects to a third mounting part 252. Specifically, the first mounting post 267 can be detachably inserted into the mounting hole of the third mounting part 252, so that the air outlet shroud 26 and the housing body 25 form a detachable connection. The cover plate 266 is circular and located in the middle of the multiple air outlet holes 263. The outer surface of the cover plate 266 may have grooves for converging the air outlet.

[0094] Specifically, the inner surface of the annular wall structure 262 is an inclined surface or an arc-shaped surface, so that the inner diameter of the annular wall structure 262 gradually decreases along the first preset direction XX, thereby making the blown air pressurized and increasing the air output intensity.

[0095] The mesh 27 is a metal mesh with multiple air inlets 270. These inlets reduce wind resistance and increase airflow. Each air inlet 270 can be circular, and all inlets can have the same diameter, with an inner diameter between 0.5mm and 4mm. This size prevents foreign objects from being drawn into the fan assembly 2. The thinner and lighter mesh 27 facilitates miniaturization and weight reduction. Furthermore, being made of metal, the air inlets of the mesh 27 can be smaller, effectively preventing foreign objects from entering the fan assembly 2. The mesh 27 also has multiple fixing holes 272 along its edge. These holes correspond to fixing posts 256 on the housing body 25, which extend into the fixing holes 272 to secure the mesh 27 to the housing body 25. The mesh 27 also has multiple flanges 273, with the fixing holes 272 located on these flanges.

[0096] The third mounting section 252 also has a blind hole 254 facing the motor 21. The opening of the blind hole 254 faces the side where the motor 21 is located, and the blind hole 254 is used to store lubricating oil for the output shaft 23. Because it is a blind hole, it can improve oil leakage and extend the service life of the motor.

[0097] The third mounting part 252 has an opening 255, through which the wire 29 connecting the motor 21 extends out from the opening 255 and then from the gap 258 between the housing body 25 and the air outlet hood 26 and connects to the control component 31 (such as the connecting circuit board 31).

[0098] The mounting structure 264 is also provided with a first alignment structure 268, and the housing body 25 has a second alignment structure 257. The first alignment structure 268 and the second alignment structure 257 cooperate to realize the alignment assembly of the housing body 25 and the air outlet hood 26.

[0099] It is understood that in this embodiment, the outer shell 1 includes a first part 1c and a second part 1d. The first part 1c, the mounting housing 4, and the second part 1d can be arranged sequentially along a second preset direction YY, which allows for the assembly of the waist-mounted fan. Specifically, the fan assembly 2 and the power supply assembly 3 can be installed on both sides of the mounting housing 4, and the control assembly 3a can be installed on the other side of the mounting housing 4. The fan assembly 2, the power supply assembly 3, and the control assembly 3a can be electrically connected through wires, connectors, and other electrical connection elements. Finally, the first part 1c and the second part 1d are arranged on both sides of the mounting housing 4 along the second preset direction YY, and the first part 1c and the second part 1d are assembled with the mounting housing 4 together along the second preset direction YY. It can be seen that the above-mentioned structural arrangement of the outer shell 1 and the mounting housing 4 makes the assembly efficiency of the waist-mounted fan relatively high.

[0100] Please see Figure 13 In the third embodiment of this utility model, a waist-mounted fan is provided. In this waist-mounted fan, the air inlet 270 of the mesh 27 is a regular hexagon, and two adjacent air inlets 270 share the same enclosure 271. This design allows the metal mesh 311 to have the largest air intake area, the lightest weight, the lowest wind resistance, and the largest air intake volume. The width of the enclosure 271 can be in the range of 0.05mm-2mm.

[0101] Please see Figure 14 The fourth embodiment of this utility model provides a waist-hanging fan. The structure of the waist-hanging fan is basically the same as that of the waist-hanging fan in the second embodiment. That is to say, the description of the waist-hanging fan in the second embodiment can be basically applied to the waist-hanging fan in the fourth embodiment. The main difference between the two is that in the waist-hanging fan of the fourth embodiment, the housing 1a includes a first part 1e and a second part 1d. The first part 1e can be equivalent to the structure and function of the first part 1c and the mounting housing 4 assembled together in the second embodiment. That is, the first part 1e has an air inlet 11 and an air outlet 12, and can accommodate a fixed fan assembly 2. The fan assembly 2 can be installed in the first part 1e from the air outlet 11.

[0102] Specifically, the first part 1e and the second part 1d can be arranged sequentially along the second preset direction YY. The edge of the first part 1e is provided with a plurality of first clips 118a, and the edge of the second part 1d is provided with a plurality of second clips 119a. The plurality of first clips 118a and the plurality of second clips 119a engage with each other to connect the first part 1e and the second part 1d into one unit.

[0103] Please see Figure 15The fifth embodiment of this utility model provides a waist-hanging fan. The structure of the waist-hanging fan is basically the same as that of the waist-hanging fan in the second embodiment. That is to say, the description of the waist-hanging fan in the second embodiment can be basically applied to the waist-hanging fan in the fifth embodiment. The main difference between the two is that in the waist-hanging fan of the fifth embodiment, the housing 1a includes a first part 1c and a second part 1f. The second part 1f can be equivalent to the structure and function of the second part 1d and the mounting housing 4 assembled together in the second embodiment. That is, the first part 1c and the second part 1f together form an air inlet 11 and an air outlet 12. The fan assembly 2 is fixed in the first part 1c or the second part 1f. The side of the second part 1f facing the fan assembly 2 has a mounting groove 1g, and the power supply assembly 3 can be installed in the mounting groove 1g. During assembly, the power supply component 3 can be installed in the mounting slot 1g first, the control component 3a can be installed in the second part 1f, the fan component 2 can be installed on the first part 1c or the second part 1f, and the fan component 2, the control component 3a and the power supply component 3 can be electrically connected. Finally, the first part 1c and the second part 1f can be assembled together along the second preset direction YY.

[0104] Please see Figures 16-21 The sixth embodiment of this utility model provides a waist-hanging fan. The structure of the waist-hanging fan is basically the same as that of the waist-hanging fan in the second embodiment. That is to say, the description of the waist-hanging fan in the second embodiment can be basically applied to the waist-hanging fan in the sixth embodiment. The following mainly describes the key parts of the sixth embodiment: Specifically, the mounting part 252 includes a mounting plate 2521 and a second mounting post 2522 that connects to the mounting plate 2521 and extends toward the mesh 27. A blind hole 254 is provided on the second mounting post 2522. The motor 21 has a motor mounting hole 210, which is sleeved on the second mounting post 2522 so that the motor 21 is mounted on the second mounting post 2522.

[0105] The blind hole 254 is also provided with a fixing post 212 and a limiting ring 213 having a through hole 211. The output shaft 23 includes a main body 231 connecting to the fan blade 22 and a limiting part 232 connecting to the main body 231. The main body 231 of the output shaft 23 passes through the fixing post 212 and the limiting ring 213 in sequence, such that the limiting part 232 is located at the end of the limiting ring away from the fixing post 21. The limiting part 232 includes a rod part 2321 and a connecting rod part 2321 away from the fan blade 22. The limiting end 2322 has a diameter that gradually decreases in the direction away from the fan blade 22. The outer surface of the rod 2321, the limiting end 2322, and the main body 231 form a limiting groove 2323. The limiting ring 213 has a limiting hole 2130. The diameter of the limiting hole 2130 is larger than the diameter of the rod 2321 and smaller than the diameter of the main body 231 and smaller than the diameter of the limiting end 2322, so that the limiting ring 213 is limited in the limiting groove 2323.

[0106] The fixed post 212 can be a copper post, and the limiting ring 213 can be an elastic spring such as a torsion spring or a snap ring.

[0107] It can be understood that, through the above structural arrangement, the limiting ring 213 is limited in the limiting groove 2323, and the output shaft 23 drives the fan blade 22 to move within the length range of the limiting groove 2323 along the extension direction of the output shaft. Specifically, the output shaft 23 and the fan blade 22 respectively have Figure 19 The first limit position shown and Figure 20 The second limiting position shown makes the fan blade 22 suspended relative to the motor 21. During the rotation of the output shaft 23 and the fan blade 22, the limiting ring 213 can provide space for their movement, making the rotation of the output shaft 23 and the fan blade 22 smoother, thereby improving the service life of the fan assembly 2.

[0108] The wire 29 connecting the motor 21 can be electrically connected to the battery 31 of the power supply component 3 through the opening 100 inside the housing 1a (such as the mounting housing 4).

[0109] The fan assembly 2 may also be provided with a positioning post 200. The positioning post 200 may be located in the middle of the outer side of the fan assembly 2, and the positioning post 200 may extend into the positioning hole 400 inside the housing 1a, so as to further assemble and position with the mounting housing 4.

[0110] 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 waist-mounted fan, characterized in that, include: The housing has a receiving cavity, an air inlet, and an air outlet, wherein the air outlet, at least a portion of the receiving cavity, and the air inlet are sequentially connected along a first preset direction; A fan assembly located in the receiving cavity and between the air inlet and the air outlet, for driving airflow from the air inlet to the air outlet; A power supply component is located in the receiving cavity. The power supply component is projected off from the fan component along the first preset direction, and the power supply component is electrically connected to the fan component to supply power to the fan component. and A first clamping device is connected to one side of the housing and is used to form a clamping space with the housing to clamp an external object, so as to fix the waist-mounted fan to the external object.

2. A waist-mounted fan according to claim 1, characterized in that, The housing has a first side, a second side, and a third side. The first side and the second side are arranged opposite to each other. The air outlet is located on the first side, and the air inlet is located on the second side. The third side is located between the first side and the second side and is adjacent to both the first side and the second side. The first clamping device extends along a first preset direction and is connected to the third side of the housing. The housing also has a fourth side, a fifth side, and a sixth side. The fourth side is arranged opposite to the third side, and the fifth side is arranged opposite to the sixth side. The direction from the fifth side to the sixth side is a second preset direction. The fan assembly and the power supply assembly are arranged sequentially along the second preset direction. The waist-mounted fan further includes a second clamping device, characterized in that the second clamping device is connected to the fourth side of the housing, and the second clamping device is also used to clamp external objects with the housing. A clamping space is provided to fix the waist-mounted fan to an external object; a first clamping device is connected to the third side of the housing near the air outlet, and a second clamping device is connected to the fourth side of the housing near the air inlet, the second clamping device extending in the opposite direction to the first clamping device; the direction from the third side to the fourth side is a third preset direction, and the maximum diameter of the housing along the second preset direction is greater than the maximum diameter of the housing along the third preset direction; a first hook is also provided on the fifth side of the housing near the air outlet, both ends of the first hook are connected to the fifth side of the housing and form a first hook hole with the housing; a second hook is also provided on the sixth side of the housing near the air outlet, both ends of the second hook are connected to the sixth side of the housing and form a second hook hole with the housing.

3. A waist-mounted fan according to claim 1, characterized in that, The fan assembly is provided with at least one first latching member, and the inner side of the housing is provided with at least one second latching member. The at least one first latching member and the at least one second latching member cooperate to fix the fan assembly in the receiving cavity of the housing. There are multiple at least one first latching member and multiple at least one second latching member. The multiple first latching members are respectively provided on both sides of the fan assembly. The first latching member is one of a protrusion and a groove, and the second latching member is the other of a protrusion and a groove. The protrusion includes a hook portion.

4. A waist-mounted fan according to claim 1, characterized in that, The fan assembly includes a motor, fan blades, and an output shaft. The fan blades are mounted on the output shaft. The fan assembly is an axial flow fan assembly, and the output shaft is arranged along the first preset direction. The fan assembly also includes a fan housing, which includes a housing body, an air outlet shroud, and a mesh screen. The motor and fan blades are both disposed in the housing body. The air outlet shroud is disposed on one side of the housing body and has multiple air outlet holes. The air outlet shroud is also located at the air outlet. The mesh screen is disposed on the other side of the housing body. The air outlet shroud includes multiple wind-gathering rings and an annular wall structure connected to the periphery of the multiple wind-gathering rings. The mesh screen includes multiple air inlets. Multiple air outlet holes are defined between the multiple wind-gathering rings. The multiple 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.

5. A waist-mounted fan according to claim 4, characterized in that, The inner surface of the ring wall structure is an inclined surface or an arc-shaped surface, so that the inner diameter of the ring wall structure gradually decreases along the first preset direction; the mesh is a metal mesh, and the metal mesh is provided with multiple air inlets, the inner diameter of each air inlet being in the range of 0.5mm to 4mm; the air inlets are regular hexagons, and two adjacent air inlets share the same enclosure wall, the width of which is in the range of 0.05mm to 2mm.

6. A waist-mounted fan according to claim 4, characterized in that, The air outlet shroud also includes an installation structure connecting multiple air-gathering rings. The installation structure includes an annular installation wall, a cover plate connecting the installation wall, and a first installation post connected to the inner side of the cover plate. The first installation post is installed corresponding to the housing body. The cover plate is located in the middle of multiple air outlets, and the outer surface of the cover plate has a groove. The installation structure is also provided with a first alignment structure, and the housing body has a second alignment structure. The first alignment structure and the second alignment structure cooperate to achieve the alignment and assembly of the housing body and the air outlet shroud. The housing body includes an annular side wall structure, an installation part located at one end of the side wall structure, and a guide part connecting the installation part and the side wall structure. The guide part includes multiple spaced guide vanes for guiding the air from the vanes in a preset direction. The vanes and the motor are located inside the side wall structure and on one side of the installation part. The motor is mounted on the installation part. The installation part has an opening, and the wire connecting the motor extends through the opening and then extends out of the gap between the housing body and the air outlet shroud to connect to the control component.

7. A waist-mounted fan according to claim 6, characterized in that, The mounting portion also has a blind hole facing the motor, the opening of which faces the side where the motor is located, and the blind hole is used to store the oil required for the rotation of the output shaft; the mounting portion includes a mounting plate and a second mounting post connected to the mounting plate and extending toward the mesh, the blind hole being disposed on the second mounting post; the motor has a motor mounting hole, which is fitted onto the second mounting post so that the motor is mounted on the second mounting post; the blind hole also has a fixing post with a through hole and a limiting ring, through which the output shaft passes. The limiting part is located at the end of the limiting ring away from the fixed column. The output shaft includes a main body connected to the fan blade and a limiting part connected to the main body. The limiting part includes a rod and a limiting end connected to the end of the rod away from the fan blade. The diameter of the limiting end gradually decreases in the direction away from the fan blade. The outer surface of the rod, the limiting end, and the main body form a limiting groove. The limiting ring has a limiting hole. The diameter of the limiting hole is larger than the diameter of the rod and smaller than the diameter of the main body and the diameter of the limiting end, so that the limiting ring is limited in the limiting groove.

8. A waist-mounted fan according to claim 4, characterized in that, The first fan housing also includes an air inlet cover, the partition mesh is installed inside the air inlet cover, the air inlet cover is located at the end of the housing body away from the air outlet cover, the air inlet cover is annular, and the air inlet cover is sleeved on one end of the housing body; the outer side of one end of the housing body may have a stepped groove, the air inlet cover is sleeved on the stepped groove, and the outer side of the air inlet cover is flush with the outer side of the housing body.

9. A waist-mounted fan according to claim 2, characterized in that, The housing includes a first part and a second part, which are arranged sequentially along a second preset direction. The edge of the first part is provided with multiple first clips, and the edge of the second part is provided with multiple second clips. The multiple first clips and multiple second clips engage to connect the first part and the second part as a whole. The housing also includes a first part, a second part, and a mounting housing, which are arranged sequentially along the second preset direction. The edge of the first part is provided with multiple first clips, and the edge of the second part is provided with multiple second clips. The mounting housing is provided with multiple third clips that engage with the multiple first clips and multiple fourth clips that engage with the multiple second clips, thus connecting the inner housing, the first part, and the second part as a whole. The inner side of the housing also includes multiple air guide plates corresponding to the air inlet. The multiple air guide plates are located between the air inlet and the fan assembly. Each air guide plate extends along the first preset direction, and the multiple air guide plates are arranged sequentially from the third side to the fourth side.

10. A waist-mounted fan according to claim 1, characterized in that, The housing includes an outer shell and a mounting housing located within the outer shell. The mounting housing includes a partition plate, and the fan assembly and the power supply assembly are located on opposite sides of the partition plate. A first clamping device is connected to the mounting housing and integrally formed with the mounting housing. The outer shell has a slot, and the portion of the first clamping device connected to the mounting housing is fixed in the slot. The power supply assembly includes a battery. The mounting housing also includes at least one limiting and fixing member that connects to the partition plate and extends toward the battery. The at least one limiting and fixing member is arranged around the periphery of the battery and fixes the battery. The portable fan also includes a control assembly located in the receiving cavity and includes control buttons and a circuit board electrically connecting the control buttons and the battery. A button hole is provided on the third side of the housing, and the control buttons are provided corresponding to the button hole.

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