Fan assembly and portable fan

Abstract

A fan assembly, comprising a fan housing and a fan blade assembly. The fan housing comprises a surrounding wall structure and a plurality of first air guide vanes, wherein the surrounding wall structure encloses an air duct, one side of the air duct being provided with at least one first air inlet; the plurality of first air guide vanes are located on the other side of the air duct, and every two adjacent first air guide vanes enclose a first air outlet. The fan blade assembly is located in the air duct and configured to guide air from the at least one first air inlet to the first air outlets through the air duct. The inner diameter of at least part of the surrounding wall structure close to the first air outlets gradually decreases in the air outlet direction of the fan housing, thus pressurizing air discharged from the fan housing.

Description

A fan assembly and a portable fan Technical Field

[0001] This invention relates to the field of fans, and particularly to a fan assembly and a portable fan. Background Technology

[0002] In summer, when it's hot outside and there's no air conditioning, portable fans have emerged as a convenient way to cool down. They've become popular due to their portability and ease of use. However, their small size limits the power of their electrical components, resulting in limited airflow and poor cooling performance. While some manufacturers have incorporated traditional booster fan structures into these small portable fans to increase airflow and improve cooling (e.g., Chinese patent (authorization announcement number: CN217029352U)), these designs don't address turbulence, leading to excessive noise and negatively impacting the user experience, hindering widespread adoption. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, embodiments of the present invention provide a fan assembly and a portable fan.

[0004] A fan assembly includes a fan housing and a fan blade assembly. The fan housing includes a wall structure and a plurality of first guide vanes. The wall structure forms an air duct. One side of the air duct has at least one first air inlet. The plurality of first guide vanes are located on the other side of the air duct, and two adjacent first guide vanes form a first air outlet. The fan blade assembly is located in the air duct and is used to guide the air from the at least one first air inlet to the first air outlet via the air duct. The inner diameter of at least a portion of the wall structure near the first air outlet gradually decreases along the air outlet direction of the fan housing to pressurize the air outlet of the fan housing.

[0005] A portable fan includes the fan assembly described in the above embodiments and a housing, wherein the fan assembly is mounted on the housing.

[0006] The beneficial effects of this invention are: the airflow is pressurized and accelerated by the cooperation of the fan blade assembly and the enclosure structure, which not only greatly improves the wind speed and air delivery distance, but also achieves the effect of quiet noise reduction. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 is a perspective view of a portable fan according to the first embodiment of the present invention;

[0010] Figure 2 is an exploded view of the portable fan shown in Figure 1;

[0011] Figure 3 is a cross-sectional view of the portable fan shown in Figure 1;

[0012] Figure 4 is a schematic diagram of the mounting housing of the portable fan shown in Figure 1;

[0013] Figure 5 is a three-dimensional view of the portable fan shown in Figure 1 from another angle;

[0014] Figure 6 is a perspective view of a portable fan according to the second embodiment of the present invention;

[0015] Figure 7 is a three-dimensional view of the portable fan shown in Figure 6 from another angle;

[0016] Figure 8 is an exploded view of the portable fan shown in Figure 6;

[0017] Figure 9 is an exploded view of the portable fan shown in Figure 6 from another angle;

[0018] Figure 10 is a cross-sectional view of the portable fan shown in Figure 6;

[0019] Figure 11 is an exploded view of the fan assembly of the portable fan shown in Figure 6;

[0020] Figure 12 is an exploded view of the fan assembly shown in Figure 11 from another angle;

[0021] Figure 13 is a perspective view of the mesh of the fan assembly of the portable fan according to the third embodiment of the present invention;

[0022] Figure 14 is an exploded view of a portable fan according to the fourth embodiment of the present invention;

[0023] Figure 15 is an exploded view of a portable fan according to the fifth embodiment of the present invention;

[0024] Figure 16 is an exploded view of a portable fan according to the sixth embodiment of the present invention;

[0025] Figure 17 is an exploded view of the fan assembly of the portable fan shown in Figure 16;

[0026] Figure 18 is an exploded view of the fan assembly shown in Figure 17 from another angle;

[0027] Figure 19 is a cross-sectional view of the output shaft and fan blades of the portable fan shown in Figure 16 in the first limit position;

[0028] Figure 20 is a cross-sectional view of the output shaft and fan blades of the portable fan shown in Figure 16 in the second limiting position;

[0029] Figure 21 is an enlarged view of point A in Figure 19;

[0030] Figure 22 is an exploded view of a portable fan according to the seventh embodiment of the present invention;

[0031] Figure 23 is an exploded view of a portable fan according to the eighth embodiment of the present invention;

[0032] Figure 24 is an exploded view of a portable fan according to the ninth embodiment of the present invention;

[0033] Figure 25 is a schematic diagram of the overall structure of the neck fan according to the tenth embodiment of this application;

[0034] Figure 26 is a schematic diagram of the overall structure of the neck fan according to the tenth embodiment of this application from another perspective.

[0035] Figure 27 is a cross-sectional view of the neck fan according to the tenth embodiment of this application;

[0036] Figure 28 is an exploded view of the neck fan according to the tenth embodiment of this application;

[0037] Figure 29 is a magnified view of part V in Figure 27;

[0038] Figure 30 is a magnified view of part VI in Figure 28;

[0039] Figure 31 is a block diagram of the principle of the neck fan according to the tenth embodiment of this application;

[0040] Figure 32 is a circuit diagram of the first charging interface of the neck fan according to the tenth embodiment of this application;

[0041] Figure 33 is a circuit diagram of the first charging control module of the neck fan according to the tenth embodiment of this application;

[0042] Figure 34 is a circuit diagram of the first battery of the neck fan according to the tenth embodiment of this application;

[0043] Figure 35 is a circuit diagram of the first main control module of the neck fan according to the tenth embodiment of this application;

[0044] Figure 36 is a circuit diagram of the first boost module and the first motor of the neck fan according to the tenth embodiment of this application;

[0045] Figure 37 is a circuit diagram of the first main control module, the first boost module, and the first motor of a modified embodiment of the neck fan of the tenth embodiment of this application;

[0046] Figure 38 is a circuit diagram of the first main control module, the first boost module, and the first motor of another modified embodiment of the neck fan of this application;

[0047] Figure 39 is a circuit diagram of the first main control module, the first boost module, and the first motor of another modified embodiment of the neck fan of this application;

[0048] Figure 40 is a schematic diagram of the overall structure of the neck fan according to the eleventh embodiment of this application;

[0049] Figure 41 is a schematic block diagram of the first main body of the neck fan according to the eleventh embodiment of this application;

[0050] Figure 42 is a schematic block diagram of the second main body of the neck fan according to the eleventh embodiment of this application;

[0051] Figure 43 is a schematic diagram of the overall structure of the neck fan according to the twelfth embodiment of this application;

[0052] Figure 44 is an exploded view of the neck fan of the twelfth embodiment of this application;

[0053] Figure 45 is another exploded view of the neck fan of the twelfth embodiment of this application;

[0054] Figure 46 is a cross-sectional view of the neck fan according to the twelfth embodiment of this application;

[0055] Figure 47 is an exploded view of the main body of the neck fan according to the twelfth embodiment of this application;

[0056] Figure 48 is an exploded view of Figure 47 from another angle;

[0057] Figure 49 is a schematic diagram of the outer side of the first main body part of the fan body shown in Figure 47;

[0058] Figure 50 is a schematic diagram of the inner side of the first outer cover of the fan body shown in Figure 47;

[0059] Figure 51 is a schematic diagram of the metal mesh structure of the first fan assembly in a modified embodiment of the twelfth embodiment of the fan body of this application;

[0060] Figure 52 is a front view of the working state of the handheld fan provided in the thirteenth embodiment of this application;

[0061] Figure 53 is a front view of the handheld fan in its stored state according to the thirteenth embodiment of this application;

[0062] Figure 54 is a rear view of the handheld fan provided in this application in its working state;

[0063] Figure 55 is a side view of the working state of the handheld fan provided in the thirteenth embodiment of this application;

[0064] Figure 56 is a side view of the handheld fan in its stowed state according to the thirteenth embodiment of this application;

[0065] Figure 57 is a schematic diagram of the air inlet cover of the handheld fan provided in the thirteenth embodiment of this application;

[0066] Figure 58 is a schematic diagram of the air outlet cover of the handheld fan provided in the thirteenth embodiment of this application;

[0067] Figure 59 is a schematic diagram of the main body of the handheld fan housing according to the thirteenth embodiment of this application from one direction;

[0068] Figure 60 is a schematic diagram of the housing body of the handheld fan provided in the thirteenth embodiment of this application from another direction;

[0069] Figure 61 is a schematic diagram of the exploded structure of a handheld fan in one direction according to the thirteenth embodiment of this application;

[0070] Figure 62 is a schematic diagram of the exploded structure of the handheld fan provided in the thirteenth embodiment of this application from another direction. Detailed Implementation

[0071] First Embodiment

[0072] Referring to Figures 1 to 5, a first embodiment of the present invention provides a portable fan, which includes a storage shell and a fan assembly, wherein the fan assembly is installed inside the storage shell. In this embodiment, the storage shell includes an outer shell 1 and a mounting shell 4. The portable fan also includes a power supply component 3. It can be understood that the portable fan is a waist-mounted fan.

[0073] 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.

[0074] The fan assembly 2 is used to drive airflow from the first air inlet 11 to the air outlet 12.

[0075] The power supply component 3 is electrically connected to the fan component 2 to supply power to the fan component 2.

[0076] 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.

[0077] 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 shell 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 portable fan, thus greatly improving production efficiency.

[0078] 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 a mounting groove 52 is provided at the upper end of the mounting housing 4, with the LED light 51 located within the mounting groove 52. This structure enables the portable 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 multifunctionality of the portable fan and improves the user experience.

[0079] 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 portable fan.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] In this embodiment, the second mounting part 42 is provided with a mounting cavity 421. The power supply component 3 includes a battery 31, and the portable fan also includes a circuit board 32. The circuit board 32 is electrically connected to the battery 31, and both the circuit board 32 and the battery 31 are placed inside the mounting cavity 421. With this structure, since both the circuit board 32 and the battery 31 are placed inside the mounting cavity 421, the structure is compact, the installation space is reduced, the manufacturing cost is lowered, and it is 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.

[0084] 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 to assemble the mounting housing 4 and the outer shell 1 together. 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 to the air outlet 12, which is beneficial for the fan to blow out the air and improve the user experience. In other modified embodiments, the upper part of the outer shell 1 is provided with a limiting protrusion, and the first mounting part 41 is provided with a slot. The limiting protrusion abuts against the slot to assemble the mounting housing 4 and the outer shell 1 together. That is, the outer shell 1 may be provided with a first snap-fit ​​part (such as the slot 14), and the mounting housing 4 may be provided with a second snap-fit ​​part (such as the limiting protrusion 415). The limiting protrusion 415 in the first snap-fit ​​part and the second snap-fit ​​part is located in the slot 14 in the first snap-fit ​​part and the second snap-fit ​​part, so that the outer shell 1 and the mounting housing 4 are connected and fixed together.

[0085] 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.

[0086] In this embodiment, the first mounting part 41 is connected to a first clamping device 7, which is used to clamp the portable 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. The first spring 71 can be a metal spring or a plastic spring. With the above structure, when in use, the user can clamp the fan to the waistband or pocket of their clothing using the first spring 71, thereby allowing the fan to blow air into the user's body. Compared to traditional handheld fans, this fan with a spring frees up the user's hands, allowing them to feel the air blown from the fan without holding it while working, thus achieving a cooling experience and greatly improving the product's portability and practicality.

[0087] 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 portable fan onto the user's clothing. Specifically, the second clamping device 8 is a second spring 81, which presses against the rear panel 102 to form a second clamping space 811 between the second spring 81 and the rear 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 fan at the waist with the first spring 71, they can clamp the second spring 81 at the hem of the clothing, 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 waist, greatly ensuring the fan's stability.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] As can be understood, as shown in Figures 1 to 5, the outer shell 1 and the mounting shell 4 together form the storage shell 1a of the portable fan. The storage shell 1a has a cavity 1b for accommodating the power supply component 3, the fan component 2, etc., a first air inlet 11, and an air outlet 12.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] The first clamping device 7 is connected to one side of the housing (such as the mounting housing 4) and is used to form a clamping space with the storage housing 1a to clamp external objects (such as belts, pockets, backpacks, flat or plate-shaped objects) so as to fix the portable fan to the external object.

[0097] It is understandable that by setting the power supply component 3 to be offset from 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 miniaturizing the portable fan and increasing its portability. Furthermore, the airflow path formed by the fan component can be offset from that of the power supply component, preventing the power supply component from affecting the fan's airflow efficiency. This results in higher airflow efficiency and stronger airflow from the portable fan, leading to better cooling performance.

[0098] Specifically, the storage shell 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.

[0099] 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.

[0100] 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 portable fan reasonable and avoids the problem of the first clamping device 7 increasing the length of the portable fan in the second preset direction YY.

[0101] The second clamping device 8 is connected to the fourth side 114 of the storage shell 1a. The second clamping device 8 also forms a clamping space with the storage shell 1a to hold external objects, thus fixing the portable fan 8 to the external object. The first clamping device 7 is connected to the end of the third side 113 of the storage shell 1a near the air outlet 12, and the second clamping device 8 is connected to the end of the fourth side 114 of the storage shell 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 portable fan upwards or downwards onto different external objects.

[0102] 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 shell 1a along the second preset direction YY is greater than the maximum diameter of the storage shell 1a along the third preset direction ZZ; the first hook 105 is disposed on the fifth side 115 of the storage shell 1a near the air outlet 12, and both ends of the first hook 105 are connected to the fifth side 115 of the storage shell 1a and form a first hook hole 1051 with the storage shell 1a; the second hook 106 is disposed on the sixth side 116 of the storage shell 1a near the air outlet 12, and both ends of the second hook 106 are connected to the sixth side 116 of the storage shell 1a and form a second hook hole 1061 with the storage shell 1a.

[0103] Furthermore, in this embodiment, the height of the first mounting portion 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 air from the first air inlet 11 from entering the side where the power supply component 3 is located, thereby improving the airflow efficiency of the portable fan and reducing the overall weight of the portable fan. However, it is understood that in a modified embodiment, the height of the first mounting portion 41 along the first preset direction XX can also be approximately equal to the height of the partition plate 441 along the first preset direction XX.

[0104] Furthermore, as shown in Figures 2 and 3, 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 portable fan can be configured as a direct-blowing portable fan, achieving a high wind efficiency and strong wind force.

[0105] Second Embodiment

[0106] Please refer to Figures 6 to 12. The second embodiment of the present invention provides a portable fan, which includes a storage shell 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.

[0107] The storage shell 1a includes an outer shell 1 and a mounting shell 4 located within the outer shell 1. The mounting shell 4 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 the mounting shell 4 and integrally formed with it. The outer shell 1 has a slot 14, and the portion of the first clamping device 7 connected to the mounting shell 4 is fixed in the slot 14.

[0108] 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 mounting shell 4, the first part 1c, and the second part 1d are connected as one unit.

[0109] The inner side of the storage shell 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 portable fan.

[0110] 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 shell 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 shell 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.

[0111] 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.

[0112] 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.

[0113] In this embodiment, the fan assembly 2 includes a fan housing 24 and a fan blade assembly. The fan blade assembly includes a motor 21 and a fan blade 22. The fan blade 22 is mounted on the output shaft 23 of the motor 21. Both the motor 21 and the fan blade 22 are located within the fan housing 24. The fan housing 24 includes a wall structure 240 and a plurality of first guide vanes 2531. The wall structure 240 forms an air duct 2400. One side of the air duct 2400 has at least one first air inlet 25a. The first guide vanes 2531 are located on the other side of the air duct 2400, and two adjacent first guide vanes form a first air outlet 25b. The fan blade assembly is located within the air duct 2400 and is used to guide the air from the at least one air inlet 25a through the air duct 2400 to the first air outlet 25b.

[0114] Specifically, as shown in Figures 11-12, the fan housing 24 includes an air inlet cover 28, a housing body 25, an air outlet cover 26, and a partition 27. The motor 21 and the fan blades 22 are both disposed in the housing body 25. The air outlet cover 26 is disposed on one side of the housing body 25 and has multiple second air outlets 263. The air outlet cover 26 is also located at the third air outlet 12 of the housing 1a. The partition 27 is disposed on the other side of the housing body 25 and is used to correspond to the second air inlet 11. The air outlet cover 26 includes multiple second air guide blades 261 and an annular wall structure 262 connected to the periphery of the multiple second air guide blades 261. The partition 27 includes multiple air inlets 270. Multiple air outlets 263 are defined between the multiple second air guide blades 261. The multiple second air guide blades 261 are used to pressurize the air from the housing body 25 and blow it out in cooperation with the inner surface of the annular wall structure 262.

[0115] 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 third air outlet 12, thereby giving the blown air a pressurizing effect and increasing the air outlet intensity.

[0116] Specifically, the housing body 25 includes a cylindrical side wall structure 251, an intermediate connecting part 252 located at one end inside the side wall structure 251, and an air guide part 253 connecting the intermediate connecting 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 intermediate connecting part 252. The motor 21 is mounted on the intermediate connecting part 252.

[0117] The side wall structure 251 and the ring wall structure 262 together form a surrounding wall structure, which encloses the air duct 240. In this embodiment, the side wall structure 251 and the ring wall structure 262 are detachably connected together. In some embodiments, the surrounding wall structure can be formed as an integral structure, in which case the housing body 25 and the air outlet hood 26 are combined into an integral structure.

[0118] The air guide section 253 includes a plurality of spaced-apart first air guide blades 2531 for guiding the air from the fan blade 22 in a preset direction. Specifically, the thickness of each first 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 plurality of first air guide blades 2531 have an angle with the radial direction of the enclosure structure 240 for guiding the air outlet of the fan blade assembly. A plurality of second air guide blades 261 extend approximately along the radial direction and are used to further guide the air outlet of the plurality of first air guide blades 2531 in the air outlet direction. The air inlet cover 28 can be annular and 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.

[0119] The air outlet shroud 26 also includes a blade base 264 connecting multiple second guide vanes 261. The blade base 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 the intermediate connecting part 252. Specifically, the first mounting post 267 can be detachably inserted into the mounting hole of the intermediate connecting 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 multiple air outlet holes 263. The outer surface of the cover plate 266 may have a groove for converging the air outlet.

[0120] 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.

[0121] The first guide vane 2531 can be connected to the second guide vane 261. Multiple first guide vanes 2531 guide the rotating airflow of the fan assembly 2 towards the direction of the output shaft 23. Multiple second guide vanes 261, located on the side of the multiple first guide vanes 2531 away from the fan blades 22, further straighten the airflow from the multiple first guide vanes 2531, ensuring that the airflow direction of the fan assembly 2 is basically along the direction of the output shaft 23 (i.e., the direction of XX). Through the two layers of blades, the first guide vane 2531 and the second guide vane 261, combined with the sidewall structure 251 and the ring wall structure 262, a surrounding wall structure is formed, which can blow out high-pressure air and improve the blowing effect.

[0122] 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.

[0123] The intermediate connecting portion 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.

[0124] The intermediate connecting 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 3a (such as the connecting circuit board 32).

[0125] The blade base 264 is also provided with a first alignment structure 268, and the shell 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 shell body 25 and the air outlet shroud 26.

[0126] 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 portable 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 portable fan relatively high.

[0127] In this embodiment, the fan housing 24 includes an air inlet cover 28, a housing body 25, an air outlet cover 26, and a mesh 27. However, in a modified embodiment, the air inlet cover 28 that fixes the mesh 27 can be omitted, and the mesh 27 can be directly fixed to the housing body 25. Alternatively, in some other modified embodiments, the housing body 25 and the air outlet cover 26 can be connected as one piece, such as a one-piece molded structure, so that the side wall structure 251 and the ring wall structure 262 can be connected as one piece, and the first guide vane 2531 and the second guide vane 261 can be connected as one piece.

[0128] In this embodiment, the air inlet mesh 27 has a mesh structure and serves as the air inlet cover for the portable fan. However, in an alternative embodiment, the mesh 27 can be replaced by other air inlet covers (such as multiple radially arranged air inlet panels, where adjacent air inlet panels may have air inlets). The mesh 27 or other air inlet covers can also be fixed to the outer casing 1. Additionally, in this embodiment, the intermediate connecting portion 252 is located on the side of the housing body 25 near the air outlet cover 26. In an alternative embodiment, the intermediate connecting portion 252 can also be located on the air inlet side of the housing body 25, such as being connected to the mesh 27 or other air inlet covers.

[0129] Third Embodiment

[0130] Please refer to Figure 13. In the third embodiment of the present invention, a portable fan is provided. In the portable fan, the air inlet 270 of the fan assembly mesh 27 is a regular hexagon. Two adjacent air inlets 270 share the same enclosure 271. The width of the enclosure 271 can be in the range of 0.05mm-2mm.

[0131] Fourth embodiment

[0132] Please refer to Figure 14. The fourth embodiment of the present invention provides a portable fan. The portable fan has a structure that is basically the same as that of the portable fan in the second embodiment. That is, the description of the portable fan in the second embodiment can be basically applied to the portable fan in the fourth embodiment. The main difference between the two is that in the portable fan of the fourth embodiment, the storage shell 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 shell 4 assembled together in the second embodiment. That is, the first part 1e has a second air inlet 11 and a third air outlet 12, and can accommodate and fix the fan assembly 2. The fan assembly 2 can be installed in the first part 1e from the air outlet 11.

[0133] 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.

[0134] Fifth Embodiment

[0135] Please refer to Figure 15. The fifth embodiment of the present invention provides a portable fan. The portable fan has a structure that is basically the same as that of the portable fan in the second embodiment. That is, the description of the portable fan in the second embodiment can be basically applied to the portable fan in the fifth embodiment. The main difference between the two is that in the portable fan of the fifth embodiment, the storage shell 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 shell 4 assembled together in the second embodiment. That is, the first part 1c and the second part 1f together form a second air inlet 11 and a third 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.

[0136] Sixth Embodiment

[0137] Please refer to Figures 16-21. The sixth embodiment of the present invention provides a portable fan. The portable fan has a structure that is basically the same as that of the portable fan in the second embodiment. That is to say, the description of the portable fan in the second embodiment can be basically applied to the portable 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.

[0138] 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.

[0139] 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.

[0140] It is understood that, through the above structural design, the limiting ring 213 is limited within 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 have the first limiting position shown in Figure 19 and the second limiting position shown in Figure 20, respectively, so that the fan blade 22 is 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. It is understood that the diameter of the limiting end 2322 gradually decreases in the direction away from the fan blade 22, so that during assembly, the limiting end 2322 can pass through the through hole of the fixing post 212 and the limiting ring 213, thereby securing it with the limiting ring 213.

[0141] 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).

[0142] 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.

[0143] As shown in Figure 22, the portable fan of the seventh embodiment of this application differs from the portable fan of the embodiments shown in Figures 14 and 15 mainly in that the first part 1c and the second part 1d of the storage shell 1a are arranged along the direction ZZ from the third side to the fourth side and are snap-fitted together. Specifically, the first part 1c and the second part 1d of the storage shell 1a are snap-fitted together along the direction ZZ from the third side to the fourth side by a plurality of first clips 118 and a plurality of second clips 119.

[0144] As shown in Figure 23, the portable fan of the eighth embodiment of this application differs from the portable fan of the embodiments shown in Figures 14 and 15 mainly in that the first part 1c and the second part 1d of the storage shell 1a are arranged along the direction XX from the first side to the second side and are connected by snap-fit. Specifically, the first part 1c and the second part 1d of the storage shell 1a are connected together by multiple first clips 118 and multiple second clips 119 along the direction XX from the first side to the second side.

[0145] As shown in Figure 24, the portable fan of the ninth embodiment of this application differs from the portable fan of the embodiments shown in Figures 8 and 9 mainly in that the first part 1c and the second part 1d of the storage shell 1a are connected as one unit through the mounting shell 4 located in the middle along the direction XX from the first side to the second side. Multiple first clips 118 are engaged with multiple third clips 401 of the mounting shell 4 and multiple second clips 119 are engaged with multiple fourth clips 402 of the mounting shell 4, so that the mounting shell 4, the first part 1c and the second part 1d are connected as one unit.

[0146] It is understandable that the two parts 1c and 1d of the storage shell 1a, or multiple parts 1c and 1d, are connected by the aforementioned multiple clips 118, 119, 401, and 402. This can effectively improve assembly efficiency, reduce production costs, and facilitate disassembly, maintenance, and battery recycling, which is conducive to meeting environmental protection requirements.

[0147] Tenth Embodiment

[0148] Referring to Figures 25 to 37, this embodiment provides a portable fan, including a storage shell and at least one fan assembly installed in the storage shell. In this embodiment, the portable fan is a neckband fan, the storage shell is a neckband body 1', and the at least one fan assembly includes a first fan assembly 3'. The lower end of the neckband body 1' has a cylindrical first air guide cavity 2' protruding from it. The first air guide cavity 2' includes a first air inlet 22' disposed at the lower end of the neckband body 1' and a first air outlet 23' disposed opposite to the first air inlet 22'. The neckband body 1' includes an inner end portion 11' that contacts the neck of a human body, and the first air outlet 23' is disposed facing the inner end portion 11'. The first fan assembly 3' is located inside the first air guide cavity 2' and is used to drive airflow from the first air inlet 22' through the first air outlet 23' to the inner end portion 11'. With the above structure, since the first air guide cavity 2' is cylindrical, the neck fan forms a vertically blowing direct-blowing fan. The first fan assembly 3' can drive the airflow from the first air inlet 22' through the first air outlet 23' to the inner end 11', greatly improving the blowing efficiency. When using the neck fan, the user can more directly feel the cool air blowing directly onto the neck, improving the overall performance of the fan. Furthermore, since the first air guide cavity 2' is a cylindrical cavity integrally formed and protruding from the neck body 1', this design enhances the overall aesthetics and design of the product, and helps to improve the wearing comfort of the neck fan, improving the overall quality and user experience of the product. It can be understood that in this embodiment, the structure of the first fan assembly 3' is basically the same as that of the fan assembly 2 in the second to ninth embodiments. That is to say, the structure of the above-mentioned fan assembly 2 can also be used in neck fans or other fans (such as handheld fans or desktop fans).

[0149] Specifically, in this embodiment, the neckband body 1' is a U-shaped neckband body 1', which includes a first main body portion 101', a second main body portion 102', and a connector 103'. The first main body portion 101' and the second main body portion 102' are detachably connected by the connector 103', which is a flexible connector 103'. Specifically, the connector 103' can be a silicone connector, a plastic connector, a rubber connector, etc. The first fan assembly 3' is disposed on the first main body portion 101'.

[0150] In this embodiment, the neck fan (such as the first main body 101') has a recessed first air guide 12', which extends from the first air outlet 23' to the inner end 11'. The first fan assembly 3' drives airflow to blow out from the first air outlet 23' and along the first air guide 12' toward the inner end 11'. Furthermore, the inner end 11' is connected to a flexible first neck support 111', and the first neck support 111' and the inner end 11' form a first air inlet gap 121'. The first fan assembly 3' drives airflow to blow out from the first air outlet 23' and along the first air guide 12' toward the first air inlet gap 121'. The first neck support 111' can be a silicone neck support, a plastic neck support, a rubber neck support, etc. With the above structure, when the airflow is blown out from the first air outlet 23', under the guidance of the concave first air guide 12', the airflow will blow along the first air guide 12' to the inner end 11'. And due to the first air inlet gap 121', the airflow can be blocked in the gap, so that when the user wears the neck fan, he / she can feel the airflow at the inner end 11' more strongly, which enhances the heat dissipation effect. In addition, the flexible neck support provides the user with a more comfortable support effect, improving the user experience.

[0151] In this embodiment, the width of the first air guide path gradually decreases towards the inner end of the first air outlet; the width of the first air guide path ranges from 1 to 5 cm; the length of the first air guide path ranges from 8 to 16 cm; and the depth of the first air guide path ranges from 0 to 3 cm.

[0152] In this embodiment, the first main body 101' includes a first outer shell 1011' and a first inner shell 1012', with a first air guide 12' disposed in the first inner shell 1012'. The first inner shell 1012' and the first outer shell 1011' are detachably connected by a snap-fit. It can be understood that the above structural design allows users to easily open and install the first main body 101', facilitating user maintenance.

[0153] In this embodiment, the diameter of the first air inlet 22' is in the range of 30mm-60mm, and the diameter of the first air outlet 23' is in the range of 30mm-60mm. This appropriate diameter range helps to achieve a balanced airflow, allowing the fan to provide sufficient airflow to maintain a high cooling effect. It also contributes to a more rational overall structure, making it easier to carry and use.

[0154] In this embodiment, the lower end of the neck fan is further provided with a cylindrical second air guide cavity 4'. The second air guide cavity 4' includes a second air inlet 42' disposed at the lower end of the neck body 1' and a second air outlet 43' disposed opposite to the second air inlet 42'. The second air outlet 43' is disposed towards the inner end 11'. The at least one fan assembly also includes a second fan assembly 5', which is disposed in the second air guide cavity 4'. The second fan assembly 5' is used to drive airflow from the second air inlet 42' through the second air outlet 43' to the inner end 11'. With the above structure, since the second air guide cavity 4' is cylindrical, the neck fan forms a vertically blowing direct-blowing fan, allowing the second fan assembly 5' to drive airflow from the second air inlet 42' through the second air outlet 43' to the inner end 11', greatly improving the blowing efficiency. Users can more directly feel the cool airflow when using the neck fan, improving the overall performance of the fan. Furthermore, since the second air guide cavity 4' is a straight cylindrical cavity integrally formed and protruding from the neckband body 1', this design enhances the overall aesthetics and design sense of the product, and helps to improve the wearing comfort of the neckband fan, thereby improving the overall quality and user experience of the product. It can be understood that the second fan assembly 5' is disposed in the second body portion 102'.

[0155] In this embodiment, the neck fan (such as the second main body 102') has a recessed second air guide 13', which extends from the second air outlet 43' to the inner end 11'. The second fan assembly 5' drives airflow to blow out from the second air outlet 43' and along the second air guide 13' toward the inner end 11'. Furthermore, the inner end 11' is connected to a flexible second neck support 112', which forms a second air inlet gap 131' with the inner end 11'. The second fan assembly 5' drives airflow to blow out from the second air outlet 43' and along the second air guide 13' toward the second air inlet gap 131'. The second neck support 112' can be a silicone neck support, a plastic neck support, a rubber neck support, etc. With the above structure, when the airflow is blown out from the second air outlet 43', under the guidance of the concave second air guide 13', the airflow will blow along the second air guide 13' to the inner end 11'. And due to the second air inlet gap 131', the airflow can be blocked in the gap, so that when the user wears the neck fan, he / she can feel the airflow at the inner end 11' more strongly, which enhances the heat dissipation effect. In addition, the flexible neck support provides the user with a more comfortable support effect, improving the user experience.

[0156] In this embodiment, the second main body 102' includes a second outer shell 1021' and a second inner shell 1022', and a second air guide 13' is disposed in the second inner shell 1022'. The second inner shell 1022' and the second outer shell 1021' are detachably connected by a snap-fit. This allows the user to easily open and install the second main body 102', facilitating user maintenance.

[0157] This embodiment also includes a first power supply component 8', located within the neckband body 1'. The first power supply component 8' is electrically connected to the first fan assembly 3' to supply power to it. The first power supply component 8' includes a first battery 81' and a first circuit board 82', with the first battery 81' and the first circuit board 82' electrically connected to supply power to it. It also includes a second power supply component 9', located within the neckband body 1'. The second power supply component 9' is electrically connected to the second fan assembly 5' to supply power to it. The second power supply component 9' includes a second battery 91' and a second circuit board 92', with the second battery 91' and the second circuit board 92' electrically connected to supply power to it. By placing the first power supply component 8' within the neckband body 1', this design improves the overall aesthetics of the neckband fan and effectively supplies power to the first fan assembly 3', ensuring product reliability. The second power supply component 9' is located inside the neckband body 1'. This design can improve the overall aesthetics of the neckband fan and effectively supply power to the second fan component 5', ensuring the reliability of the product.

[0158] The structure of the first fan assembly 3' and the second fan assembly 5' in this embodiment is basically the same as that of the fan assembly 2 in the second to ninth embodiments. The description of the fan assembly 2 in the above embodiments also applies to the first fan assembly 3' and the second fan assembly 5'.

[0159] In this embodiment, the first fan assembly 3' includes a first fan housing 31', a first motor 32' fixedly installed inside the first fan housing 31', and a first fan blade 33' mounted on the shaft of the first motor 32'. The first fan housing 31' is provided with a third air inlet 311', a first air duct 312', and a third air outlet 313'. The first air inlet 22', the third air inlet 311', the first air duct 312', the third air outlet 313', the first air guide cavity 2', and the first air outlet 23' are sequentially connected. Through the above structural design, the first fan assembly 3' in this embodiment has an independent outer shell, which facilitates the individual installation and replacement of the fan.

[0160] In another embodiment, the first fan assembly 3' includes a first motor 32' and a first fan blade 33' mounted on the shaft of the first motor 32'; a first air inlet 22' is connected to a first air inlet shroud 221', the first air inlet shroud 221' having a plurality of first air inlet holes 222'; a first air outlet 23' is connected to a first air outlet shroud 231', the first air outlet shroud 231' having a plurality of first air outlet holes 232'. With the above structure, this configuration eliminates the need for a fan housing, saving costs, and effectively directs airflow. The design of the first air inlet shroud 221' and the first air outlet shroud 231' helps prevent other debris, such as hair and paper scraps, from being sucked into the fan, thus contributing to the fan's safety.

[0161] In this embodiment, the second fan assembly 5' includes a second fan housing 51', a second motor 52' ​​fixedly installed inside the second fan housing 51', and a second fan blade 53' mounted on the shaft of the second motor 52'. The second fan housing 51' is provided with a fourth air inlet 42', a second air duct 512', and a fourth air outlet 513'. The second air inlet 42', the fourth air inlet 511', the second air duct 512', the fourth air outlet 513', the second air guide cavity 4', and the first air outlet 23' are sequentially connected. Through the above structural design, the first fan assembly 3' in this embodiment has an independent outer shell, which facilitates the individual installation and replacement of the fan.

[0162] In other embodiments, the second fan assembly 5' includes a second motor 52' ​​and a second fan blade 53' mounted on the shaft of the second motor 52'; a second air inlet shroud 421' is connected to the second air inlet 42' and the fourth air inlet 511', and the second air inlet shroud 421' is provided with a plurality of second air inlet holes 422'; a second air outlet shroud 431' is connected to the second air outlet 43' and the fourth air outlet 513', and the second air outlet shroud 431' is provided with a plurality of second air outlet holes 432'. With the above structure, this configuration eliminates the need for a fan housing, saving costs, and also effectively directs the airflow. The design of the second air inlet shroud 421' and the second air outlet shroud 431' helps prevent other debris, such as hair and paper scraps, from being sucked into the fan, thus contributing to the fan's safety.

[0163] In this embodiment, the connector 103' has a mounting hole 1031', the first main body 101' has a first connecting end 1013' connected to the connector 103', the first connecting end 1013' is detachably inserted into one end of the mounting hole 1031', and the second main body 102' has a second connecting end 1023' connected to the connector 103', the second connecting end 1023' is detachably inserted into the other end of the mounting hole 1031'.

[0164] Furthermore, the first connecting end 1013' is provided with a first buckle 10131' in a concave-convex shape, the connector 103' is provided with a first groove 1032' that engages with the first buckle 10131', the second connecting end 1023' is provided with a second buckle 10331' in a concave-convex shape, and the connector 103' is provided with a second groove 10231' that engages with the second buckle 10331'. With the above structure, the connector 103' is a flexible silicone connector. After the connector 103' is bent to a certain angle, the first main body 101' and the second main body 102' can be easily inserted into the mounting hole 1031'. The first main body 101' is engaged with the first slot 1032' on the inner wall of the connector 103' by the first buckle 10131' with a concave-convex shape provided at the first connecting end 1013'. The second main body 102' is engaged with the second slot 10231' on the inner wall of the connector 103' by the second buckle 10331' with a concave-convex shape provided at the second connecting end 1023'. This allows the first main body 101' and the second main body 102' to be easily installed and connected to form a complete neck fan.

[0165] As shown in Figures 27-30, the connector 103' can be divided into a flexible connecting portion 103a', which may have at least one mounting hole 1031'. The at least one mounting hole 1031' extends along the extending direction D1' from the first connecting end 1013' of the first main body portion 101' to the second connecting end 1023' of the second main body portion 102', and is fitted and fixed to the first connecting end 1013' and the second connecting end 1023', so that the first main body portion 101' and the second main body portion 102' are connected through the flexible connecting portion 103a'. Connecting the first main body portion 101' and the second main body portion 102' through the flexible connecting portion 103a' creates a flexible connection between them, thus facilitating user wear.

[0166] In this embodiment, the flexible connecting portion 103a' has a through mounting hole, that is, a through mounting hole provided along the extending direction D1'. The two ends of the through mounting hole 103a' are respectively used to fit and fix the first connecting end 1013' and the second connecting end 1023'. Using a single through mounting hole is simple and provides flexible assembly space. However, in a modified embodiment, the flexible connecting portion 103a' may also have two oppositely arranged blind holes (i.e., non-through holes), which are respectively used to fit and fix the first connecting end 1013' and the second connecting end 1023'.

[0167] In one embodiment, the inner wall of the at least one mounting hole 1031' is provided with a first anti-detachment structure (such as a second slot 1023a') and a second anti-detachment structure (such as a second slot 1023b'). The first anti-detachment structure is used to engage with a first buckle 10131' on the outer surface of the first connecting end 1013', and the second anti-detachment structure is used to engage with a second buckle 10331' on the outer surface of the second connecting end 1023'. At least one of the first anti-detachment structure and the first buckle 10131' includes a plurality of protrusions and recesses arranged sequentially along the extension direction D1'.

[0168] Specifically, in this embodiment, the first anti-detachment structure includes a plurality of second slots 1023a' arranged along the extension direction for engaging with a plurality of protrusions of the first buckle 10131' arranged along the extension direction; the second anti-detachment structure includes a plurality of second slots 1023b' arranged along the extension direction for engaging with a plurality of protrusions of the second buckle 10331' arranged along the extension direction; the first anti-detachment structure is detachably connected to the first buckle 10131', and the second anti-detachment structure is detachably connected to the second buckle 10331'.

[0169] In one embodiment, the flexible connection portion 103a' is arc-shaped and has an inner side for approaching the human neck and an outer side for away from the human neck. The first anti-detachment structure is disposed on the inner sidewall adjacent to the outer side at one end of the at least one mounting hole 1031'. The second anti-detachment structure is disposed on the inner sidewall adjacent to the outer side at the other end of the at least one mounting hole 1031'.

[0170] In one embodiment, the flexible connecting portion 103a' further includes a first fixing structure 103b' and a second fixing structure 103c'. The first fixing structure 103b' and the second fixing structure 103c' are respectively disposed at both ends of the flexible connecting portion 103a'. The first fixing structure 103b' is used to connect with the third fixing structure 1013a' of the first connecting end 1013', and the second fixing structure 103c' is used to connect with the fourth fixing structure 1023c' of the second connecting end 1023'. The first fixing structure 103b' is detachably connected to the third fixing structure 1013a', and the second fixing structure 103c' is detachably connected to the fourth fixing structure 1023c'.

[0171] In one embodiment, one of the first fixing structure 103b' and the third fixing structure 1013a' is a first fixing post 141', and one of the first fixing structure 103b' and the third fixing structure 1013a' is a first fixing hole 142'; one of the second fixing structure 103c' and the fourth fixing structure 1023c' is a second fixing post 143', and one of the second fixing structure 103c' and the fourth fixing structure 1023c' is a second fixing hole 144'; the first fixing structure 103b' extends along a first tangential direction D2' perpendicular to the extension direction, and the second fixing structure extends along a second tangential direction D3' perpendicular to the extension direction.

[0172] In one embodiment, the first fixing post 141' includes a first post body 1411' and a first hook portion 1412' connected to one end of the first post body 1411' away from the flexible connecting portion 103a'. The outer diameter of the first hook portion 1412' is larger than the outer diameter of the first post body 1411' to prevent the first fixing post 141' from disengaging from the first fixing hole 142'. The second fixing post 143' includes a second post body 1431' and a second hook portion 1432' connected to one end of the second post body 1431' away from the flexible connecting portion 103a'. The outer diameter of the second hook portion 1432' is larger than the outer diameter of the second post body 1431' to prevent the second fixing post 143' from disengaging from the second fixing hole 144'.

[0173] In one embodiment, the first fixing hole 142' includes a first portion 1421' corresponding to the first column 1411' and a second portion 1422' corresponding to the first hook portion 1412', wherein the diameter of the second portion 1422' is larger than the diameter of the first portion 1421'; the second fixing hole 144' includes a third portion 1441' corresponding to the second column 1431' and a fourth portion 1442' corresponding to the second hook 1432', wherein the diameter of the fourth portion 1442' is larger than the diameter of the third portion 1441'.

[0174] In one embodiment, the connector 103' may also be provided with at least one neck support (such as a first neck support 111' and a second neck support 112'), the at least one neck support being connected to the inner side of the flexible connector 103a' for proximity to the human neck, the at least one neck support being used to form at least one air inlet gap with the first main body portion 101' or the second main body portion 102', so that the air from the first main body portion 101' or the second main body portion 102' can enter the air inlet gap (such as 121', 131'), thereby avoiding the situation where the human neck is in direct contact with the first main body portion 101' or the second main body portion 102', resulting in the air not being able to be provided to the surface of the neck skin.

[0175] As shown above, in this embodiment, the at least one neck support includes a first neck support 111' and a second neck support 112'. The first neck support 111' is disposed adjacent to the first main body portion 101' and is used to form a first air inlet gap 121' with the first main body portion 101'. The second neck support 112' is disposed adjacent to the second main body portion 102' and is used to form a second air inlet gap 131' with the second main body portion 102'.

[0176] In one embodiment, the surfaces of the first neck brace 111' and the second neck brace 112' away from the flexible connection 103a' also have a plurality of protrusions 103m', which are used to create a gap between the at least one neck brace and the skin of the human neck, and also to prevent the human neck from directly contacting the first main body 101' or the second main body 102', which would prevent air from being delivered to the surface of the neck skin.

[0177] It can be seen that the surfaces of the first neck support 111' and the second neck support 112' away from the flexible connecting part 103a' are arc-shaped surfaces, and the size of the plurality of protrusions 103b' can gradually decrease from the middle to both ends along the vertical direction D4' perpendicular to the extension direction D1', thereby achieving a more comfortable wearing effect.

[0178] In this embodiment, the flexible connecting part 103a', the first neck support part 111' and the second neck support part 112' are all made of flexible materials. If they are all made of the same flexible material (such as flexible silicone material) and are integrally molded, a more comfortable wearing effect can be achieved.

[0179] Further, the flexible connecting portion 103a' includes a main body portion 103d', a first extension portion 103e', and a second extension portion 103f'. The main body portion 103d' has at least one mounting hole 1031'. The first extension portion 103e' and the second extension portion 103f' are respectively connected to the two ends of the main body portion 103d', and the first extension portion 103e' and the second extension portion 103f' protrude from the main body portion 103d' along the extension direction D1'. The first extension portion 103e' and the second extension portion 103f' are respectively used to cover the inner surface of the first connecting end 1013' and the inner surface of the second connecting end 1023' that are close to the human neck. The first fixing structure and the second fixing structure are respectively disposed on the first extension 103e' and the second extension 103f', so that the first fixing structure and the second fixing structure are close to the inner side of the human neck, and the first anti-detachment structure and the second anti-detachment structure are located on the outer side away from the human neck. The inner and outer cooperation can make the connector 103' reliably connect the first main body 101' and the second main body 102', and prevent the connection from easily detaching.

[0180] In this embodiment, the first air guide cavity 2' is located inside the first main body portion 101', and the first main body portion 101' is also provided with a first mounting cavity 1014', and the first power supply component 8' is located inside the first mounting cavity 1014'; the second air guide cavity 4' is located inside the second main body portion 102', and the second main body portion 102' is also provided with a second mounting cavity 1024', and the second power supply component 9' is located inside the second mounting cavity 1024'.

[0181] In this embodiment, the first main body 101' is further provided with a first switch 1015', a first charging interface 1016', and a first indicator module 1017', all of which are electrically connected to the first power supply component 8'. The second main body 102' is further provided with a second switch 1025', a second charging interface 1026', and a second indicator module 1027', all of which are electrically connected to the second power supply component 9'. With the above structure, the first switch 1015' and the second switch 1025' are both used to start or stop the neck fan, the first charging interface 1016' and the second charging interface 1026' are respectively used to charge the first battery 81' and the second battery 91', and the first indicator module 1017' and the second indicator module 1027' can respectively indicate whether the fan is on or off, and can also display the fan's output wind speed level.

[0182] In this embodiment, as shown in Figures 31-37, the neck fan further includes a first charging control module 811', a first battery protection module 812', a first charging indicator module 813', a first main control module 814', and a first boost module 815'; the first charging control module 811', the first battery protection module 812', the first charging indicator module 813', the first main control module 814', and the first boost module 815' can all be disposed on the first circuit board 82'.

[0183] The first charging interface 1016' and the first charging control module 811' are both electrically connected to the first battery 81'. The first charging indicator module 813' is connected to the first charging control module 811'. The first charging interface 1016' and the first charging control module 811' are used to charge the first battery 81'. The first charging indicator module 813' is used to display the charging status. The first battery protection module 812' is electrically connected to the first charging control module 811' and the first battery 81' to protect the first battery 81'.

[0184] The first main control module 814', the first boost module 815', and the first motor 32' are all electrically connected to the first battery 81'. The first switch 1015' and the first indicator module 1017' are electrically connected to the first main control module 814'. The first indicator module 1017' is used to indicate whether the neck fan is on or off. It can be understood that the first indicator module 1017' and the first charging indicator module 813' constitute a first status indicator module, used to display at least one of the following: the start-up status, the off status, the charging status, and the output wind speed level of the first fan body or the neck fan. In this embodiment, both the first indicator module 1017' and the first charging indicator module 813' are indicator light modules. However, in other embodiments, the first status indicator module can also be one or more displays, such as an LED display, a liquid crystal display, or an electronic ink display.

[0185] In this embodiment, the neck fan further includes a second charging control module 921', a second battery protection module 922', a second charging indicator module 923', a second main control module 924', and a second boost module 925'. The second charging control module 921', the second battery protection module 922', the second charging indicator module 923', the second main control module 924', and the second boost module 925' can all be disposed on the second circuit board 92'.

[0186] The second charging interface 1026' and the second charging control module 921' are both electrically connected to the second battery 91'. The second charging indicator module 923' is connected to the second charging control module 921'. The second charging interface 1026' and the second charging control module 921' are used to charge the second battery 91'. The second charging indicator module 923' is used to display the charging status. The second battery protection module 922' is electrically connected to the second charging control module 921' and the second battery 91' to protect the second battery 91'.

[0187] The second main control module 924', the second boost module 925', and the second motor 52' ​​are all electrically connected to the second battery 91'. The second switch 1025' and the second indicator module 1027' are electrically connected to the second main control module 924'. The second indicator module 1027' is used to indicate whether the neck fan is on or off. It can be understood that the second indicator module 1027' and the second charging indicator module 923' constitute a first status indicator module, used to display at least one of the following: the start-up status, the off status, the charging status, and the output wind speed level of the second fan body or the neck fan. In this embodiment, both the second indicator module 1027' and the second charging indicator module 923' are indicator light modules. However, in other embodiments, the second status indicator module can also be one or more displays, such as an LED display, a liquid crystal display, or an electronic ink display.

[0188] In this embodiment, the first main body 101' is provided with a first conductive terminal 1018', and the second main body 102' is provided with a second conductive terminal 1019'. The first conductive terminal 1018' and the second conductive terminal 1019' are connected. The first switch 1015' is electrically connected to the first main control module 814' and the second main control module 924' respectively. The second switch 1025' is electrically connected to the first main control module 814' and the second main control module 924' respectively. The first switch 1015' or the second switch 1025' is used to send a third fan working signal.

[0189] The first main control module 814' is used to receive the working signal of the third fan and drive the first boost module 815' to receive and increase the output voltage of the first battery 81' so as to drive the first motor 32' to work;

[0190] The second main control module 924' is used to receive the working signal of the third fan and drive the second boost module 925' to receive and increase the output voltage of the second battery 91' to drive the second motor 52' ​​to work.

[0191] As can be understood, as shown in Figure 38, in one embodiment, the operation of either the first switch 1015' or the second switch 1025' by the user can generate a third fan operating signal, causing both the first motor 32' and the second motor 52' ​​to operate. Specifically, the first conductive terminal 1018' of the first main body portion 101' may have a connector J1' for connection with the connector J1' of the second conductive terminal 1019' of the second main body portion 102', thereby realizing the electrical connection between the first main control module 814' and the second main control module 924', and thus enabling the operation of either the first switch 1015' or the second switch 1025' by the user to generate a third fan operating signal. Specifically, the connector J1' may have two signal terminals, but is not limited to the above.

[0192] It is understood that when there is no connection between connector J1' of the first conductive end 1018' of the first main body 101' and connector J1' of the second conductive end 1019' of the second main body 102', that is, when the first main body 101' and the second main body 102' are independent, the first switch 1015' and the second switch 1025' can independently control the operation of the two fan assemblies, and the two do not affect each other.

[0193] Furthermore, in some other embodiments, through preset program control, the control of the two fan assemblies can be dominated by either the first switch 1015' or the second switch 1025' as needed. Specifically, in another embodiment, a third fan operating signal is issued only when one of the first switch 1015' and the second switch 1025' (such as the first switch) is operated by the user, so that the first motor 32' and the second motor 52' ​​operate simultaneously.

[0194] Specifically, as shown in Figures 37 and 38, the first switch 1015' and the second switch 1025' may include a push-button switch S1'. In other embodiments, as shown in Figure 39, the first switch 1015' and the second switch 1025' may also include a stepless adjustment key P1' (such as a knob or slide adjustment key) that can be infinitely adjusted. The stepless adjustment key P1' can control the speed of the fan assembly, thereby controlling the wind force. The stepless adjustment key P1' includes, but is not limited to, stepless adjustment devices such as potentiometers with variable resistance and encoders. In one embodiment, the stepless adjustment key P1 may have multiple connection terminals and at least one adjustment pin. One of the multiple connection terminals may be grounded, and at least one adjustment pin can be operated by the user to cause the other connection terminals to output corresponding stepless adjustment signals. In other embodiments, multiple stepless adjustment pins can be provided to increase the adjustment range and functions. It can be understood that the stepless adjustment key P1' allows users to control the wind force of the neck fan according to their own needs, improving the user experience.

[0195] In this embodiment, the first main body portion 101' and the second main body portion 102' can be regarded as a neck fan formed by two independent fans electrically connected together, wherein the circuit diagrams of the various circuit modules contained in the two independent fans are the same.

[0196] Through the above structure, the first main body 101' and the second main body 102' are combined to form a complete U-shaped neck fan. At this time, the first conductive end 1018' and the second conductive end 1019' are connected. Regardless of whether the user presses the first switch 1015' or the second switch 1025', a third fan working signal can be emitted. When the first main control module 814' receives the third fan working signal, it drives the first boost module 815' to receive and increase the output voltage of the first battery 81', thereby driving the first motor 32' to work. The rotation of the first motor 32' can drive the first fan blade 33' to rotate, realizing the blowing effect of the first fan assembly. When the second main control module 924' receives the third fan working signal, it drives the second boost module 925' to receive and increase the output voltage of the second battery 91', thereby driving the second motor 52' ​​to work. The rotation of the second motor 52' ​​can drive the second fan blade 53' to rotate, realizing the blowing effect of the second fan assembly.

[0197] It is understood that the first main control module 814' shown in Figure 35 and the first boost module 815' shown in Figure 36, and other related circuits, can also have other modified implementations. As shown in Figure 37, in one modified embodiment, the boost control chip U2' of the first boost module 815' can be omitted. Specifically, the first boost module 815' can include an inductor L1' and a switching element Q2'. The control terminal of the MCU of the first main control module 814' is connected to the control terminal of the switching element Q2'. The first conducting terminal of the switching element Q2' is connected to the battery BAT' via the inductor L1'. The second conducting terminal of the switching element Q2' is grounded. The first conducting terminal of the switching element Q2' is connected to the first motor MG1'. Specifically, the first conducting terminal of the switching element Q2' is connected to the first motor MG1' via the diode D4'. The first main control module 814' controls the switching element Q2' of its MCU' to turn on and off, thereby boosting the voltage from battery BAT' through inductor L1' and providing the boosted voltage to the first motor MG1' to drive the first fan blade 33' to rotate. As mentioned earlier, the second main control module 924' and the second boost module 925' can also use the same circuit structure as shown in Figure 36 to provide the boosted voltage to the second motor to drive the second fan blade 53' to rotate, which will not be described again here.

[0198] Eleventh Embodiment

[0199] Referring to Figures 40 to 42, the eleventh embodiment differs from the tenth embodiment only in that the first main body part 101” and the second main body part 102” of the neck fan are disassembled to form two independent fans. The first main body part 101” and the second main body part 102” are two small fans that can work independently.

[0200] In this embodiment, the first main body 101” includes a first charging control module 811”, a first battery protection module 812”, a first charging indicator module 813”, a first main control module 814”, and a first boost module 815”, which are electrically connected to the first circuit board 82”.

[0201] The first charging interface 1016", the first charging control module 811", and the first charging indicator module 813" are all electrically connected to the first battery 81". The first charging interface 1016" and the first charging control module 811" are used to charge the first battery 81". The first charging indicator module 813" is used to display the power level of the first battery 81". The first battery protection module 812" is electrically connected to the first charging control module 811" and the first battery 81" to protect the first battery 81".

[0202] The first main control module 814", the first boost module 815", and the first motor 32" are all electrically connected to the first battery 81". The first switch 1015" and the first indicator module 1017" are electrically connected to the first main control module 814". The first switch 1015" is used to send a first fan working signal. The first main control module 814" is used to receive the first fan working signal and drive the first boost module 815" to receive and increase the output voltage of the first battery 81" to drive the first motor 32" to work. The first indicator module 1017" is used to display whether the neck fan is on or off.

[0203] With the above structure, the first charging interface 1016” is used to charge the first battery 81”, the first charging control module 811” is used to control the charging of the first battery 81”, and when the first switch 1015” is turned on, it sends a first fan working signal. When the first fan working signal is received, the first main control module 814” is used to drive the first boost module 815” to receive and increase the output voltage of the first battery 81” to drive the first motor 32” to work. The first main control module 814” can also adjust the speed of the first motor 32” by controlling the output voltage of the first boost module 815”.

[0204] In this embodiment, the second main body 102” includes a second charging control module 921”, a second battery protection module 922”, a second charging indicator module 923”, a second main control module 924”, and a second boost module 925”, which are electrically connected to the second circuit board 92”.

[0205] The second charging interface 1026", the second charging control module 921", and the second charging indicator module 923" are all electrically connected to the second battery 91". The second charging interface 1026" and the second charging control module 921" are used to charge the second battery 91". The second charging indicator module 923" is used to display the power level of the second battery 91". The second battery protection module 922" is electrically connected to the second charging control module 921" and the second battery 91" to protect the second battery 91".

[0206] The second main control module 924", the second boost module 925", and the second motor 52 are all electrically connected to the second battery 91. The second switch 1025" and the second indicator module 1027" are electrically connected to the second main control module 924". The second switch 1025" is used to send a second fan working signal. The second main control module 924" is used to receive the second fan working signal and drive the second boost module 925" to receive and increase the output voltage of the second battery 91 to drive the second motor 52". The second indicator module 1027" is used to display whether the neck fan is on or off.

[0207] With the above structure, the second charging interface 1026” is used to charge the second battery 91”, and the second charging control module 921” is used to control the charging of the second battery 91”. When the second switch 1025” is turned on, it sends a second fan working signal. The second main control module 924” is used to drive the second boost module 925” to receive and increase the output voltage of the second battery 91” when it receives the second fan working signal, so as to drive the second motor 52” to work. The second main control module 924” can also adjust the speed of the second motor 52” by controlling the output voltage of the second boost module 925”. The above structural design effectively realizes the effect that after the neck fan is disassembled, the individual part can be used as an independent fan, bringing more flexibility and allowing users to choose the appropriate usage method according to specific needs.

[0208] Twelfth Embodiment

[0209] Referring to Figures 43 to 50, this embodiment also provides a neck fan. It can be understood that the above descriptions of the tenth and eleventh embodiments can be basically applied to the neck fan of the twelfth embodiment. The following mainly describes the key parts of the twelfth embodiment and the differences from the tenth and eleventh embodiments.

[0210] The neck-hanging fan includes a neck-hanging body 1”', which includes a first main body portion 101”', a second main body portion 102”', a connector 103”' connecting the first main body portion 101”' and the second main body portion 102”', a first fan assembly 3”' disposed at one end of the first main body portion 101”' away from the connector 103”', and a second fan assembly 5”' disposed at one end of the second main body portion 102”' away from the connector 103”'.

[0211] The connector 103”' is detachably connected to both the first main body part 101”' and the second main body part 102”'. The first main body part 101”' is detachably connected to the first fan assembly 3”', and the second main body part 102”' is detachably connected to the second fan assembly 5”'. Thus, all five parts of the neck fan can be detachably connected, forming a modular design. This not only facilitates assembly but also reduces assembly and maintenance costs. Furthermore, users can disassemble, assemble, store, and DIY their own components, improving the user experience.

[0212] The first main body portion 101”' has an arc-shaped structure, including a concave first air guide 12”' disposed on one side surface of the first main body portion 101”' and extending along the extension direction of the arc-shaped structure. The first fan assembly 3”' is disposed at one end of the first main body portion 101”' and is used to blow air toward the first air guide 12”'. The first air guide 12”' is used to guide the air from the first fan assembly 3”' to one side of the first main body portion 101”' (i.e., the side of the user's neck) and the end of the first main body portion 101”' away from the first fan assembly 3”' (such as the back of the user's neck).

[0213] The second main body portion 102”' has an arc-shaped structure, including a concave second air guide 13”' disposed on one side surface of the second main body portion 102”' and extending along the extension direction of the arc-shaped structure. The second fan assembly 5”' is disposed at both ends of the second main body portion 102”' and is used to blow air toward the second air guide 13”'. The second air guide 13”' is used to guide the air from the second fan assembly 5”' to one side of the second main body portion 102”' (i.e., the other side of the user's neck) and the end of the second main body portion 102”' away from the second fan assembly 5”' (such as the back of the user's neck).

[0214] Furthermore, the first main body portion 101”' and the first fan assembly 3”' can also be assembled into one unit to form the first fan body, and the second main body portion 102”' and the second fan assembly 5”' can also be assembled into one unit to form the second fan body. Thus, a neck fan can be disassembled into two fan bodies for use according to the user's needs. It can be understood that when used as a neck fan, the fan body and the other fan body are respectively positioned on either side of the user's neck. Disassembling a neck fan into two fan bodies according to the user's needs enriches usage scenarios, facilitates storage, and enhances the user experience.

[0215] In some embodiments, the first fan body and the second fan body are manufactured independently and then assembled together using an assembly process. This configuration allows the two fan bodies to form a modular design, which not only facilitates assembly but also reduces assembly and maintenance costs. Furthermore, users can disassemble, assemble, repair, store, and even design their own fans, thus improving the user experience.

[0216] The first fan assembly 3”' includes a cylindrical first fan housing 31”', which is detachably connected to the neck hanger body 1 and located in the first receiving cavity 15. The first fan housing 31 has a third air inlet 311 and a third air outlet 313.

[0217] With the above structure, since the first fan housing 31 is cylindrical, the neck fan forms a vertically blowing direct-blowing fan. The first fan assembly 3 can drive airflow from the third air inlet 311 through the third air outlet 313 along the first air guide path 12 to the user's neck, greatly improving the blowing efficiency. When using the neck fan, the user can more directly feel the cool air blowing directly onto their neck, improving the overall performance of the fan. Furthermore, since the first fan housing 31 and the neck hanger body 1 can be disassembled and assembled, they can be processed and assembled separately during the production process, improving production efficiency, reducing production costs, and facilitating storage and transportation, thus improving the product's portability.

[0218] In this embodiment, the first main body portion 101 of the neckband body 1 has a plurality of connecting slots 151 on its inner side near the first receiving cavity 15, and the outer wall of the first fan housing 31 has a plurality of connecting buckles 315 that match and engage with the connecting slots 151. The first fan housing 31 and the neckband body 1 are detachably connected by the buckles. Specifically, the connecting slots 151 are symmetrically distributed on the inner side of the neckband body 1, with six sets of connecting slots 151, and two connecting slots 151 in each set; the connecting buckles 315 are symmetrically distributed on the outer wall of the first fan housing 31, with six sets of connecting buckles 315, and two connecting buckles 315 in each set. With the above structure, the user can manually install or remove the first fan housing 31 from the neckband body 1. The six sets of buckle engagement structure ensure the firmness of the splicing and prevent the first fan housing from detaching during wear and use, thus improving the safety and convenience of the neckband fan.

[0219] In this embodiment, the first main body portion 101 of the neck hanger body 1 is detachably connected to the outer side away from the first receiving cavity 15 with a first outer cover 16. Similar to Embodiment 1, the first main body portion 101 of the neck hanger body is provided with a first mounting cavity 1014, the first power supply component 8 is located in the first mounting cavity 1014, the first mounting cavity 1014 has an opening, and the first outer cover 16 is detachably closed with the opening.

[0220] In this embodiment, the first fan assembly 3 further includes a first motor 32 and a first fan blade 33 mounted on the shaft of the first motor 32.

[0221] The first fan housing 31 may include a housing body 31a, an air inlet cover 31b, a metal mesh 3111, and an air outlet cover 31c.

[0222] The first fan blade 33 and the first motor 32 are both installed in the housing body 31a. Specifically, the housing body 31a includes a cylindrical side wall structure 310a, a mounting part 310b located at one end of the side wall structure 310a, and an air guide part 310c connecting the mounting part 310b and the side wall structure 310a. The first fan blade 33 and the first motor 32 are disposed in the side wall structure 310a and located on one side of the mounting part 310b. The first motor 32 is mounted on the mounting part 310b.

[0223] The air guide section 310c includes a plurality of spaced first air guide blades 310d, used to guide the air from the first fan blade 33 in a preset direction. Specifically, the thickness of each first air guide blade 310d can gradually increase along the direction from the first fan blade 33 to the third air outlet 313, thereby achieving a better air guiding effect. The air inlet cover 31b can be annular, and the air inlet cover 31b can be sleeved on one end of the housing body 31a. Specifically, the outer side of one end of the housing body 31a can have a stepped groove 31f, and the air inlet cover 31b is sleeved and installed in the stepped groove 31f, so that after installation, the outer side of the air inlet cover 31b is flush with the outer side of the housing body 31a. The metal mesh 3111 can be installed on the inner side of the air inlet cover 31b.

[0224] The third air inlet 311 is provided on the metal mesh 3111. The third air inlet 311 includes multiple air inlet holes 311a, each of which can be circular, and the diameter of the multiple air inlet holes 311a can be the same. The diameter of each air inlet hole 311a can be in the range of 0.5mm to 4mm. This size can prevent hair or other objects from getting into the first fan assembly 3. It can be understood that the metal mesh 3111 is thin and lightweight, which is beneficial to the miniaturization and weight reduction of the product. In addition, since it is made of metal, the size of the air inlet holes of the metal mesh 3111 can be set to be small, thereby effectively preventing foreign objects from entering the first fan assembly 3.

[0225] The third air outlet 313 includes a plurality of air outlet holes 3130 disposed on the air outlet shroud 31c. Specifically, the air outlet shroud 31c includes an annular wall structure 31g, a mounting structure 31h, and a plurality of air-concentrating ring plates 3131. The plurality of air-concentrating ring plates 3131 are connected between the annular wall structure 31g and the mounting structure 31h, and the plurality of air outlet holes 3130 are defined between the plurality of air-concentrating ring plates 3131.

[0226] The inner surface of the annular wall structure 31g is an inclined or arc-shaped surface, so that the inner diameter of the annular wall structure 31g gradually decreases along the direction from the third air inlet 311”' to the third air outlet 313”', thereby pressurizing the blown air and increasing the air outlet intensity. The mounting structure 31h”' includes an annular mounting wall 31i”', a cover plate 31j”' connecting the mounting wall 31i”', and a mounting post 31k”' connecting the inner side of the cover plate 31j”'. The mounting post 31k”' connects to the mounting part 310b”'. Specifically, the mounting post 31k”' can be detachably inserted into the mounting hole of the mounting part 310b”', so that the air outlet cover 31c”' and the housing body 31a”' form a detachable connection. The cover plate 31j”' is circular and located in the middle of the plurality of air outlets 3130”'. The outer surface of the cover plate 31j”' may have a groove for converging the air outlet.

[0227] The mounting structure 31h”' is further provided with a first alignment structure 31m”', and the mounting part 310b”' has a second alignment structure 31n”'. The first alignment structure 31m”' and the second alignment structure 31n”' cooperate to realize the alignment assembly of the housing body 31a”' and the air outlet hood 31c”'. The first alignment structure 31m”' and the second alignment structure 31n”' can be one, two or more. Specifically, one of the first alignment structure 31m”' and the second alignment structure 31n”' can be an alignment hole, and the other can be an alignment post that mates with the alignment hole.

[0228] The metal mesh 3111” prevents hair or debris from being sucked into the first fan housing, avoiding damage to the fan assembly and reducing the fan's airflow. The concentrator ring 3131” focuses the airflow directed toward the neck, improving airflow performance.

[0229] The first main body 101”' also includes at least one air guide 101h”', which is disposed in the first air guide 12”' and adjacent to the first fan assembly 3”', for guiding the airflow of the first fan assembly 3”'.

[0230] In this embodiment, there are two air guide vanes 101h”', which are respectively arranged on both sides of the first air guide path 12”', and the distance between the two air guide vanes 101h”' gradually increases along the air outlet direction of the first air guide path 12”'.

[0231] In this embodiment, a first conductive through hole 152”’ is provided on the inner side of the neckband body near the first receiving cavity 15”’. The first conductive through hole 152”’ is used for the wires of the first fan assembly 3”’ to pass through and communicate with the first power supply assembly 8”’. The mounting part 310b”’ may have an opening 310e”’, through which the wires connecting the motor can extend and then be connected to the first power supply assembly 8”’ via the first conductive through hole 152”’.

[0232] With the above structure, when assembling the neck fan, first open the first outer cover 16”', then pass the wire of the first fan assembly 3”' through the first conductive through hole 152”' and connect it to the first power supply assembly 8”' in the first mounting cavity 1014”', then close the first outer cover 16”'. After the wire of the first fan assembly 3”' is connected, assemble the first fan housing with the neck body through the snap-fit ​​of the connecting buckle 315”' and the connecting slot 151”', and finally obtain a direct-blowing neck fan that is conductive to the neck body 1”' and easy to install.

[0233] In this embodiment, the lower end of the second main body portion 102”' of the neck hanger body is further recessed into a second receiving cavity 17”' on the side opposite to the first receiving cavity 15”'; it also includes a second fan assembly 5”', the second fan assembly 5”' including a cylindrical second fan housing 51”', the second fan housing 51”' being detachably connected to the neck hanger body and located in the second receiving cavity 17”', the second fan housing 51”' having a fourth air inlet 511”' and a fourth air outlet 513”', the second fan assembly 5”' being used to drive airflow from the fourth air inlet 511”' through the fourth air outlet 513”' towards the inner end. Similarly, due to the cylindrical shape of the second fan housing 51”', the neck fan forms a vertically blowing direct-flow fan. The second fan assembly can drive airflow from the fourth air inlet 511”' through the fourth air outlet 513”' to the inner end 11”', greatly improving the blowing efficiency. Users can more directly feel the cool airflow blowing directly onto their neck when using the neck fan, improving the overall performance of the fan. Furthermore, since the second fan housing 51”' and the neck hanger body 1”' can be disassembled and assembled, they can be processed and assembled separately during the production process, improving production efficiency, reducing production costs, and facilitating storage and transportation, thus improving the product's portability.

[0234] In this embodiment, the inner side of the second main body portion 102”' near the second receiving cavity 17”' of the neck hanger body is provided with a plurality of connecting slots 151”', and the outer wall of the second fan housing 51”' is provided with a plurality of connecting buckles 315”' that match and engage with the connecting slots 151”'. The second fan housing 51”' and the neck hanger body 1”' are detachably connected by the buckles. Specifically, the connecting slots 151”' are symmetrically distributed on the inner side of the second main body portion 102”' of the neck hanger body, and there are six sets of connecting slots 151”', with two connecting slots 151”' in each set; the connecting buckles 315”' are symmetrically distributed on the outer wall of the first fan housing, and there are six sets of connecting buckles 315”', with two connecting buckles 315”' in each set.

[0235] In this embodiment, a second outer cover 18”’ is detachably connected to the outer side of the second main body portion 102”’ away from the second receiving cavity 17”’. Similar to Embodiment 1, the second main body portion 102”’ of the neck hanger body 1”’ has a second mounting cavity 1024”’, the second power supply component 9”’ is located in the second mounting cavity 1024”’, the second mounting cavity 1024”’ has an opening, and the second outer cover 18”’ is detachably closed with the opening.

[0236] Furthermore, the specific structure of the second fan assembly 5”' can be the same as that of the first fan assembly 3”', including the second motor 52”' and the second fan blade 53”' mounted on the a rotating shaft; the structure of the second fan housing 51”' can be basically the same as that of the first fan housing 31”', such as including the housing body 31a”', the air inlet cover 31b”', the metal mesh 3111”' and the air outlet cover 31c”', wherein the fourth air inlet 511”' can also include multiple air inlet holes 3110”' provided on the metal mesh 3111”' of the second fan housing 51”'. The fourth air outlet may also include multiple air outlet holes 3130"' disposed on the air outlet cover 31c"' of the second fan housing 51"'. The specific structure of the second main body 102"' and the first main body 101"' may be the same, and the second main body 102"' and the first main body 101"' may be symmetrically arranged. The second fan assembly 5"' and the first fan assembly 3"' may also be symmetrically arranged. The specific structure of the second fan housing 51"' and the second main body 102"' will not be described again here.

[0237] In this embodiment, a second conductive through hole 171”’ is provided on the inner side of the neck hanger body near the second receiving cavity 17”’. The second conductive through hole 171”’ is used for the wires of the second fan assembly 5”’ to pass through and communicate with the second power supply assembly 9”’.

[0238] With the above structure, after assembling the first fan housing 31”', the second fan housing 51”' is installed in the same way. First, the second outer cover 18”' is opened, and then the wire of the second fan assembly 5”' is passed through the second conductive through hole 171”' and connected to the second power supply assembly 9”' in the second mounting cavity 1024”'. Then, the second outer cover 18”' is closed. After the wire of the second fan assembly 5”' is connected, the second fan housing 51”' is spliced ​​with the neck hanger body 1”' by the snap-fit ​​of the connecting buckle 315”' and the connecting slot 151”', and finally a direct-blowing neck hanger fan that is conductive to the neck hanger body 1”' and easy to install is obtained.

[0239] It is understood that the inner sides of the first outer cover 16”' and the second outer cover 18”' have at least one first fastener 160”', and the outer sides of the first main body 101”' and the second main body 102”' have at least one second fastener 1010”'. The first fastener 160”' and the second fastener 1010”' engage to achieve the assembly of the first outer cover 16”' and the first main body 101”' as well as the assembly of the second outer cover 18”' and the second main body 102”'. Specifically, there can be multiple first fasteners 160”' and second fasteners 1010”', such as 16a”', 16b”', 16c”', 16d”' and 101a”', 101b”', 101c”', 101d”', and the structures of the multiple first fasteners 16a”', 16b”', 16c”', 16d”' can be different, and the multiple second fasteners 101a”', 101b”', 101c”', 101d”' are structures that cooperate with the multiple first fasteners.

[0240] It is understood that both the first fan assembly 3”' and the second fan assembly 5”' are direct-blowing fan assemblies with air intake and exhaust on the same axis. In the first fan assembly 3”', the air intake cover 31b”', the first fan blade 33”', the first motor 32”', the housing body 31a”', and the air outlet cover 31c”' are all arranged in a straight line. In the second fan assembly 5”', the air intake cover 31b”', the second fan blade 53”', the second motor 52”', the housing body 31a”', and the air outlet cover 31c”' are all arranged in a straight line. This arrangement allows the first fan assembly 3”' and the second fan assembly 5”' to have greater airflow and better airflow performance.

[0241] Furthermore, as can be seen from the tenth and eleventh embodiments, the fan body and the other fan body may each have corresponding and independent switches 1015”' and 1025”, so that the opening and closing of the fan body and the other fan body are independently controlled by the corresponding switches 105”' and 1025”.

[0242] Furthermore, as shown in Figure 51, in a modified embodiment of Example Twelve, the air inlet 3110"' of the metal mesh 311"' can also be a regular hexagon, with multiple air inlets 3110"' forming a honeycomb pattern. Adjacent air inlets 3110"' share the same enclosure wall 311a"'. This design maximizes the air intake area of ​​the metal mesh 311"', minimizes its weight, reduces wind resistance, and maximizes the air intake volume. Specifically, the width of the enclosure wall is in the range of 0.05mm-2mm.

[0243] Thirteenth Embodiment

[0244] Please refer to Figures 52-62. This embodiment provides a portable fan, which is a handheld fan. It includes a fan body 10”” and a fan head 20”” connected to the fan body 10””. A connecting component 30”” installed on the fan body 10”” has a storage space 31”””, which is located in the axial direction of the fan body 10””. The fan head 20”” is rotatably connected to the connecting component 30””. In the working state, the fan head 20”” rotates in the radial direction of the fan body 10”” within the storage space 31””. In the stored state, the fan head 20”” is stored in the storage space 31””.

[0245] In this embodiment, the fan head 20”” is rotatably connected to the connecting component 30””, and has two usage states. In the working state, the fan head 20”” rotates in the storage space 31”” around the radial direction of the fan body 10”” to adjust the angle between the fan head 20”” and the fan body 10””, thereby adjusting the air outlet angle of the handheld fan. In the storage state, the fan head 20”” is stored in the storage space 31”” for storage. Specifically, the connecting component 30”” includes two connecting arms 32””, which are axially mounted on the fan body 10””. The two connecting arms 32”” are symmetrically arranged, and the fan head 20”” is movably connected to the free ends of the two connecting arms 32””” to ensure that the fan head 20”” is subjected to balanced force and rotates better. The two connecting arms 32””” and one end of the fan body 10”” form the storage space 31””. In this embodiment, the storage space 31”” can simultaneously allow the fan head 20”” to rotate and be stored, optimizing the design. Furthermore, the storage space 31”” is located in the axial direction of the fan body 10””, further ensuring a compact structure and reducing the space occupied by the handheld fan. Additionally, one of the fan head 20”” and the connecting component 30”” is provided with a connecting shaft in the radial direction, and the other is provided with a connecting hole. The connecting shaft is rotatably mounted on the connecting hole, enabling a rotatable connection between the fan head 20”” and the connecting component 30””.

[0246] Please refer to Figures 52 to 55. The fan head 20”” is provided with a first air inlet 21”” and a second air outlet 22”” which communicates with the first air inlet 21””. In the stored state, the first air inlet 21””, the second air outlet 22”” and the fan body 10”” are located on the same axis. The first air inlet 21”” is close to the fan body 10””, and the second air outlet 22”” is far away from the fan body 10””. The first air inlet 21””, the second air outlet 22”” and the fan body 10”” are located on the same axis, that is, the fan body 10”” and the fan head 20”” form a 0-degree angle, thereby ensuring that the fan occupies less space after storage and is convenient for storage and placement. Furthermore, in the working state, the angle between the fan body 10”” and the fan head 20”” is in the range of 0 degrees (excluding) to 90 degrees. In the folded state, the first air inlet 21” is close to the fan body 10”, and the second air outlet 22” is far from the fan body 10”, which can prevent dust from accumulating in the first air inlet 21”. Understandably, based on actual needs, the angle between the fan body 10” and the fan head 20” can be greater than 90 degrees.

[0247] The fan head 20”” has a structure that is basically the same as the fan assembly 2 in the previously described embodiment. Specifically, the fan head 20”” includes a fan housing 20a and a fan blade assembly 27a”” disposed within the fan housing 20a. The fan housing 20a includes a wall structure 24a”” and a plurality of first guide vanes 253””. The wall structure 24a”” forms an air duct 24b. One side of the air duct 24b has at least one first air inlet 21””. The first guide vanes 253”” are located on the other side of the air duct 24b, and two adjacent first guide vanes 253”” form a first air outlet 25b. The fan blade assembly 27a”” is located in the air duct 24b and is used to guide the air from the at least one air inlet 25a through the air duct 24b to the first air outlet 25b. Specifically, as shown in Figures 67-68, the fan housing 20a includes an air inlet cover 23””, a housing body 25”” connected to the air inlet cover 23””, and an air outlet cover 24”” connected to the housing body 25””. The air inlet cover 23”” is located at the first air inlet 21””, and the first air outlet 22”” is located at the first air outlet 25b of the air outlet cover 24””. In this example, the fan head 20”” is split into the air inlet cover 23””, the housing body 25””, and the air outlet cover 24”””, so as to facilitate the assembly after installing the fan blade assembly in the fan head 20””, reducing the assembly difficulty, improving the assembly efficiency, and reducing the manufacturing cost.

[0248] Please refer to Figures 52 to 55 and 58. The air outlet shroud 24”” includes an annular wall structure 24”” and a blade base 242””. The annular wall structure 24”” is hollow. The blade base 242”” is located inside the annular wall structure 24””. The second guide blade 243”” is connected between the blade base 242”” and the annular wall structure 241”””. The blade base 242””, the annular wall structure 241”” and two adjacent second guide blades 243””” form a second air outlet 22””. In this embodiment, the annular wall structure 241”” is hollow to house the blade base 242””. The blade base 242””, the annular wall structure 241”” and two adjacent second guide blades 243””” form a second air outlet 22””, which can ensure the normal air intake of the handheld fan and also reduce the weight of the handheld fan.

[0249] Please refer to Figures 52 to 55, 59, and 60. The "shell body 25" includes a side wall structure 251" and a middle connecting part 252". The side wall structure 251" is hollow, and the middle connecting part 252" is located inside the side wall structure 251". The middle connecting part 252" and the side wall structure 251" are connected by several first air guide vanes 253". The middle connecting part 252" and the side wall structure 251" and two adjacent first air guide vanes 243" form a first air outlet 25b. The second air outlet 22" on the air outlet cover 24" corresponds one-to-one with the first air outlet 25b on the shell body 25". In this embodiment, by setting the air inlet cover 23" and the air outlet cover 24" and the shell body 25", the entire shell is divided into multiple parts, which facilitates manufacturing and assembly. The middle connecting part 252””, the side wall structure 251”” and the two adjacent first air guides 253”” form a first air outlet 25b, which can ensure the normal air intake of the handheld fan and also reduce the weight of the handheld fan.

[0250] Please refer to Figures 58 to 60. The fan blade assembly 27a is provided with a blade fixing post. The surface of the blade base 242”” extends towards the intermediate connecting part 252”” to form a second fixing member 2421””. The intermediate connecting part 252”” is provided with a third fixing hole 2521””. The second fixing member 2421”” passes through the third fixing hole 2521””. The blade fixing post passes through the third fixing hole 2521”” and connects with the second fixing member 2421””. In this embodiment, the second fixing member 2421”” passes through the third fixing hole 2521”” and connects with the second fixing member 2421””, so as to assemble the housing body 25””, the air outlet shroud 24”” and the fan blade assembly together, which is simple to assemble.

[0251] The blade base 242” is provided with a second positioning component 2422”, and the intermediate connecting part 252” is provided with a third positioning component 2522”. The second positioning component 2422” is inserted into the third positioning component 2522” to restrict the axial rotation of the second inner shell 242” relative to the intermediate connecting part 252”. In this embodiment, the second positioning component 2422” is inserted into the third positioning component 2522” to assemble the shell body 25” and the air outlet hood 24” together, which is simple to assemble. Furthermore, the second fixing member 2421” is inserted into the third fixing hole 2521” to assemble the shell body 25” and the air outlet hood 24” together first. However, at this time, the shell body 25” and the air outlet hood 24” can rotate axially. By the second positioning component 2422” being inserted into the third positioning component 2522”, the rotation of the shell body 25” and the air outlet hood 24” relative to the axis is restricted, so as to achieve stable assembly.

[0252] The second positioning component 2422”” includes two second positioning elements 2423”””, which are symmetrically arranged on both sides of the second fixing element 2421””. In this embodiment, the symmetrical arrangement of the two second positioning elements 2423”” can ensure balanced force distribution, avoid local stress concentration, improve the overall stability and durability of the air outlet hood 24”” and the housing body 25””, and further improve the processing quality of the product.

[0253] The second positioning member 2423”” is U-shaped, and the opening of the second positioning member 2423”” faces the second fixing member 2421””. In this embodiment, the U-shaped second positioning member 2423”” has high strength, good rigidity, small deformation, and is easy to install. Specifically, the second positioning member 2423”” includes a second bottom plate 2424”” connected to the inner wall of the second inner shell 242””, and two second side plates 2425”” installed at both ends of the second bottom plate 2424””. The two second side plates 2425””” and the second bottom plate 2424”” form the U-shaped second fixing member 2421””.

[0254] The third positioning component 2522”” includes two third positioning elements 2523”””, which are symmetrically arranged on both sides of the third fixing hole 2521””. In this embodiment, the symmetrical arrangement of the two third positioning elements 2523”” can ensure balanced force distribution, avoid local stress concentration, improve the overall stability and durability of the air outlet hood 24”” and the housing body 25””, and further improve the processing quality of the product.

[0255] The second outer shell 241”” is provided with a second step, and the third outer shell 251”” is provided with a third protrusion. The second step and the third protrusion cooperate to connect the second outer shell 241”” and the third outer shell 251””.

[0256] Please refer to Figures 58 to 60. The third positioning member 2523”” is U-shaped, with its opening facing the third inner shell 252””. In this embodiment, the U-shaped third positioning member 2523”” has high strength, good rigidity, small deformation, and is easy to install. Specifically, the third positioning member 2523”” includes a third base plate 2524”” and two third side plates 2525””, one side of the two third side plates 2525”” is connected to the third base plate 2524””, and the other side is connected to the third inner shell 252””.

[0257] The second side plate 2425”” is connected to the second inner shell 242”” via the second positioning block 2426””. The third inner shell 252 is provided with a clearance notch 2526”””, which is used for assembling the second positioning block 2426””. In this embodiment, the second positioning block 2426”” extends along the inner wall of the second inner shell 242”” toward the second fixing member 2421. The clearance notch 2526”” is used for assembling the second positioning block 2426””, which can ensure better assembly stability. Specifically, the third inner shell 252”” is provided with a third platform. The edge of the third platform protrudes toward the air outlet hood 24”” to form a third inner boss. A notch is provided at the position corresponding to the third positioning member 2523”” to form the clearance notch 2526””. In this embodiment, the second positioning member 2423”” and the third positioning member 2523”” cooperate, and the second positioning block 2426”” and the clearance notch 2526”” cooperate, which can better fix the air hood 24”” and the housing body 25””.

[0258] Please refer to Figures 57 and 60. The third outer shell 251”” has a plurality of serrations 251”” on the side facing the air inlet cover 23””. The air inlet cover 23”” has a first through hole 231”” that mates with the serrations 251”””. The serrations 2511”” are engaged with the first through hole 231””. In this embodiment, the serrations 251””” and the first through hole 231””” mate with each other, allowing for quick engagement of the outer shell body 25”” and the air inlet cover 23”””, facilitating assembly.

[0259] Please refer to Figure 58. A mesh 26" is provided on the air inlet cover 23", located at the first air inlet 21". A first protrusion is provided on the inner wall of the air inlet cover 23", and the mesh 26" is installed between the first protrusion and the housing body 25". In this embodiment, by providing the mesh 26", the handheld fan can be protected from external objects entering the fan and interfering with its operation. It also protects the user from direct contact with the fan blade assembly inside the fan head 20", preventing injury. The mesh 26" is a metal grid with multiple air inlets. These inlets reduce wind resistance and increase airflow. Each air inlet can be circular, and the diameters of all inlets can be the same, with an inner diameter between 0.5mm and 4mm. This size prevents foreign objects from being drawn into the fan blade assembly. It is understandable that the 26” isolation net is thinner and lighter, which is conducive to the miniaturization and weight reduction of the product; in addition, since it is made of metal, the size of the air inlet of the 26” isolation net can be set to be smaller, thereby effectively preventing foreign objects from entering the fan head.

[0260] Please refer to Figure 55. Compared to Figure 52, the handheld fan in this embodiment further includes a support member 40””. The support member 40”” is rotatably connected to one end of the fan body 10”” and is positioned away from the fan head 20””. In the working state, the support member 40”” cooperates with the fan body 10”” to fix the handheld fan. In the storage state, the support member 40”” is attached to the surface of the handheld fan. In the working state, the support member 40”” cooperates with the fan body 10””, with the free end of the support member 40”” and the end of the fan body 10”” serving as two support points to support the handheld fan and fix it on a flat surface. In the storage state, the support member 40”” is attached to the surface of the handheld fan, ensuring that the overall volume of the handheld fan is small in the storage state. Two ways of placing it on a flat surface are achieved: firstly, the handheld fan can be placed on a flat surface using the fan body 10””; secondly, the handheld fan can be placed on a flat surface using both the fan body 10”” and the support member 40””.

[0261] Please refer to Figure 55. The side of the support member 40” connected to the fan body 10”” has a support opening 41””. In the working state, the unfolding direction of the support member 40”” corresponds to the direction of the first air inlet 21”” of the fan head 20””, and the bottom of the support opening 41”” abuts against the fan body 10””. A support opening 41”” is formed at the end of the support member 40””. The support member 40”” is movably connected to the fan body 10”” near the inner wall of the support opening 41””, facilitating rotation of the support member 40””. The unfolding direction of the support member 40”” corresponds to the direction of the first air inlet 21”” of the fan head 20””, which helps to lower the center of gravity of the handheld fan and improve its stability in the working state. The cross-section of the support member 40”” is at least partially the same as the cross-section of the fan body 10””. In this embodiment, the cross-section of the support member 40”” is at least partially the same as the cross-section of the fan body 10””. Therefore, in the folded state, the support member 40”” fits snugly against the fan body 10””, ensuring a better user experience and minimizing the overall space occupied by the handheld fan. Furthermore, the cross-section of the support member 40”” is arc-shaped, and at least partially the cross-section of the fan body 10”” is arc-shaped, resulting in an aesthetically pleasing overall appearance for the handheld fan.

[0262] Please refer to Figures 52, 61, and 62. A switch button 11 is provided on the fan body 10". In this embodiment, the fan body 10 is hollow, used to install a power supply component 50 and a circuit board 51 connected to the power supply component 50". The circuit board 51 is connected to the switch button 11 to receive an on signal from the switch button 11, causing the motor 27 of the fan blade assembly to rotate, thereby causing the fan blades 28 to rotate. Receiving an off signal from the switch button 11 stops the motor 27 of the fan blade assembly from rotating, thereby stopping the fan blades 28 from rotating. The wires connecting the motor 27 can be electrically connected to the power supply component 50 through an opening in the fan head.

[0263] Please refer to Figures 52 and 54. The side of the fan body 10”” opposite to the fan head 20”” forms a concave surface 12””; the concave surface 12”” allows at least a portion of the fan head 20”” to pass through. In this embodiment, the concave surface 12”” is formed on the surface of the fan body 10”” opposite to the fan head 20””. When the fan head 20”” rotates, at least a portion of the fan head 20”” passes through the concave surface 12””. While ensuring normal rotation of the fan head 20””, the axial gap between the fan head 20”” and the fan body 10”” is as small as possible, making the height of the handheld fan as low as possible, ensuring minimal space occupation and easy portability. Specifically, the diameter of the fan head 20”” is not greater than the diameter of the concave surface 12””.

[0264] The above descriptions provide one or more embodiments in conjunction with specific details, but do not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered within the scope of protection of the present invention.

Claims

1. A fan assembly comprising: The fan housing includes a wall structure and a plurality of first guide vanes. The wall structure forms an air duct. One side of the air duct has at least one first air inlet. The plurality of first guide vanes are located on the other side of the air duct and two adjacent first guide vanes form a first air outlet. A fan blade assembly, located in the air duct and used to guide the air from the at least one first air inlet to the first air outlet via the air duct; Wherein, at least a portion of the inner diameter of the enclosure structure near the first air outlet gradually decreases along the air outlet direction of the fan housing in order to pressurize the air outlet of the fan housing.

2. The fan assembly as claimed in claim 1, characterized in that, The enclosure structure includes a side wall structure and an annular wall structure. The side wall structure forms the air duct. The plurality of first guide vanes are connected to the inner side of the side wall structure. The annular wall structure is connected to the air outlet side of the side wall structure. At least a portion of the inner diameter of the annular wall structure gradually decreases along the air outlet direction to pressurize the air outlet of the fan housing.

3. The fan assembly as claimed in claim 2, characterized in that, The fan housing also includes a plurality of second guide vanes, which are connected to the inner side of the annular wall structure. A second air outlet is formed between two adjacent second guide vanes, and the plurality of second guide vanes are used to guide the airflow from the plurality of first guide vanes.

4. The fan assembly as claimed in claim 3, characterized in that, The inner diameter of the portion of the annular wall structure connected to the second guide vane gradually decreases along the air outlet direction to pressurize the air outlet of the fan housing.

5. The fan assembly as claimed in claim 3, characterized in that, A plurality of first guide vanes are connected to an intermediate connection, and the fan blade assembly is mounted on the intermediate connection; the enclosure structure has a gap configured to allow wires to pass through to electrically connect the fan blade assembly in the enclosure structure to a control assembly located outside the fan housing.

6. The fan assembly as claimed in claim 1, characterized in that, The fan housing also includes an air inlet cover and a partition net. The partition net is disposed at the first air inlet, and the air inlet cover fixes the partition net to the air inlet end of the enclosure structure.

7. A fan assembly comprising: The fan housing includes a wall structure, a plurality of first guide vanes and a plurality of second guide vanes. The wall structure forms an air duct. One side of the air duct has at least one first air inlet. The plurality of second guide vanes and the plurality of first guide vanes are arranged sequentially along the air outlet direction. Two adjacent first guide vanes form a first air outlet. A fan blade assembly, located in the air duct and used to guide the air from the at least one first air inlet to the first air outlet via the air duct; The plurality of first guide vanes are at an angle to the radial direction of the enclosure structure to guide the airflow from the fan blade assembly, and the plurality of second guide vanes extend approximately along the radial direction and are used to further guide the airflow from the plurality of first guide vanes to the airflow direction.

8. A portable fan, comprising At least one fan assembly as claimed in claim 1; and A storage housing, on which the fan assembly is mounted.

9. The portable fan as described in claim 8, characterized in that, It includes a power supply component and a first clamping device. The storage shell has a receiving cavity, and the first air inlet, at least a portion of the receiving cavity, and the first air outlet are connected. The fan assembly is located in the receiving cavity. The power supply component is located in the receiving cavity and is electrically connected to the fan assembly to supply power to the fan assembly. The first clamping device is connected to one side of the storage shell and is used to form a clamping space with the storage shell to clamp an external object, so as to fix the portable fan to the external object.

10. The portable fan as described in claim 9, characterized in that, The storage shell includes a first part and a second part, which are arranged sequentially and cooperate to form the receiving cavity. The edge of the first part is provided with a plurality of first latches, and the edge of the second part is provided with a plurality of second latches. Multiple first clips and multiple second clips engage to connect the first part and the second part into one unit, or multiple first clips engage with multiple third clips of the mounting housing and multiple second clips engage with multiple fourth clips of the mounting housing, so that the mounting housing, the first part and the second part are connected into one unit.

11. The portable fan as described in claim 10, characterized in that, The plurality of first cards extend toward the side where the plurality of second cards are located; the plurality of second cards extend toward the side where the plurality of first cards are located; each first card engages with a corresponding second card or third card, and each second card engages with a corresponding first card or fourth card.

12. The portable fan as described in claim 8, characterized in that, The number of the at least one fan assembly is two. The housing includes a first main body part and a second main body part connected to each other. The two fan assemblies are respectively disposed in the first main body part and the second main body part. Each of the first main body part and the second main body part includes an inner surface for approaching the human neck. The inner surface is recessed to form an air guide groove on the side away from the human neck. The air guide groove is used to guide the air outlet of the fan assembly to the human neck. The depth of at least a portion of the air guide groove gradually decreases in the direction away from the fan assembly.

13. The portable fan as described in claim 12, characterized in that... The storage shell also includes a connector connected between the first main body portion and the second main body portion. The connector includes a connecting portion and at least one neck support portion. The at least one neck support portion is connected to the inner side of the connecting portion for proximity to the human neck. The at least one neck support portion is used to form at least one air inlet gap with at least one of the first main body portion and the second main body portion, so that air from the first main body portion and the second main body portion can enter the air inlet gap.

14. The portable fan as described in claim 8, characterized in that, The storage shell includes a main body and at least one connecting arm connected to the main body. The at least one connecting arm and the main body form a storage space. The fan assembly is disposed in the storage space and can rotate within the storage space. The fan assembly includes a storage state and a working state. In the storage state, at least a portion of the fan assembly is stored within the storage space. The fan assembly can also rotate relative to the storage shell in the storage state to enter the working state. In the working state, the fan assembly can blow air outward.

15. The portable fan as described in claim 14, characterized in that, The number of at least one connecting arm is two, the two connecting arms are arranged opposite each other and respectively connected to the main body, the storage space is located between the two main body, and the fan assembly is rotatably connected to both connecting arms; the fan assembly has a rotational angle of not less than 180 degrees relative to the storage shell; the main body is cylindrical, the fan assembly is arranged on one side of the main body along the central axis of the cylinder, the storage shell also includes a support member, the support member is rotatably connected to the end of the main body away from the fan assembly, the support member has a working state and a storage state, in the working state, the support member cooperates with the main body to support the portable fan; in the storage state, the support member is attached to the surface of the main body; the main body is provided with a receiving groove for accommodating the support member; in the storage state, the support member is stored in the receiving groove and is attached to the surface of the main body.

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