Neck fan

Abstract

A neck fan, comprising a fan assembly (1), a neck-mounted component (2) and at least one connection module (3), wherein the fan assembly (1) comprises a fan body (11) and a mounting portion (12); the neck-mounted component (2) comprises a first end portion (21), a second end portion (22) and an intermediate arc-shaped main body (23) and is filled with a heat-absorbing medium (4), and at least one of the first end portion (21) and the second end portion (22) has a mounting hole (5); and the connection module (3) comprises a first portion (31) and a second portion (32), the first portion (31) being detachably connected to the neck-mounted component (2), the second portion (32) being detachably connected to the fan assembly (1), and the first portion (31) being provided with a mounting column (6) and at least partially passing through the mounting hole (5). The fan has a simple structure and a low cost, achieves good ventilation and a good cooling effect, and is power-saving and environmentally friendly.

Description

Neck fan

[0001] This application claims priority to Chinese patent application No. 202420170178.X filed on January 23, 2024. The contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] The present disclosure relates to a neck hanging fan. Background Art

[0003] Fans accelerate air circulation by rotating blades, providing cooling and relief from the heat. Traditional fans are large and difficult to port. As living standards improve, more and more people are engaging in outdoor sports and recreation, leading to a growing demand for portable fans.

[0004] A neck-hanging fan is a portable fan worn around the neck. One known neck-hanging fan features multiple fans mounted on the neck-contacting part, blowing air at multiple locations around the user's neck. However, this type of neck-hanging fan requires complex air inlet and outlet ducts, which is costly. Furthermore, the airflow from a neck-hanging fan is at ambient temperature. Outdoors in high summer temperatures, the airflow from a neck-hanging fan is also high in temperature, resulting in a poor cooling effect.

[0005] In order to improve the cooling effect, it is known to provide a semiconductor cooling chip on the neck strap component for active cooling. However, the power of the semiconductor cooling chip is relatively high, resulting in increased power consumption.

[0006] Therefore, there is a need for a neck hanging fan that can achieve good ventilation and cooling effects with a simple structure and low cost, and is energy-saving and environmentally friendly.

[0007] Summary of the Invention

[0008] In response to the above-mentioned problems and needs, the present disclosure proposes a new neck-hanging fan, which solves the above-mentioned problems and brings other technical effects by adopting the following technical features.

[0009] On the one hand, the present disclosure provides a neck-hanging fan, comprising: a fan assembly, comprising a fan body and a mounting portion arranged on one side of the fan body; a neck-hanging component for being worn on the neck of a human body, the neck-hanging component being filled with a heat-absorbing medium, the neck-hanging component comprising a first end portion, a second end portion and an arc-shaped main body between the first end portion and the second end portion which are sealed to each other, and at least one of the first end portion and the second end portion being provided with a mounting hole; and at least one connecting module, the at least one connecting module connecting the fan assembly and the neck-hanging component, wherein the at least one connecting module comprises a first part and a second part, the first part being detachably connected to the neck-hanging component, and the second part being detachably connected to the mounting portion of the fan assembly, wherein the first part is provided with a mounting column and at least partially passes through the mounting holes of the first end portion and / or the second end portion.

[0010] In some examples, the at least one connection module is formed by two shell halves, at least one of the two shell halves is provided with a mounting column at the first portion and a connecting portion at the second portion, configured to be detachably connected to the mounting portion of the fan assembly.

[0011] In some examples, the mounting hole is a through hole, and the mounting post passes through the through hole and cooperates with an inner wall of the through hole.

[0012] In some examples, the mounting hole is a stepped hole structure, including a first countersunk portion, a second countersunk portion, and a through-hole portion between the first countersunk portion and the second countersunk portion, wherein the diameter of the through-hole portion is smaller than the diameter of the first countersunk portion and the second countersunk portion to form a flange between the through-hole portion and the first countersunk portion and / or the second countersunk portion, wherein the mounting post abuts against at least one surface of the flange, or wherein the mounting post passes through the through-hole portion.

[0013] In some examples, one of the connecting portion and the mounting portion is provided with a connecting rod, an end of the connecting rod is provided with a spherical connector, and the other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connector, wherein the neck hanging fan further includes a locking structure, the spherical connector and the spherical cavity are locked or unlocked with each other by the locking structure, and wherein, when locked, the spherical connector is fixed in the spherical cavity, and when unlocked, the spherical connector can rotate in the spherical cavity or can be separated from the spherical cavity.

[0014] In some examples, the locking structure includes an external thread that at least partially surrounds the spherical cavity and a nut that cooperates with the external thread. The spherical connector is accommodated in the spherical cavity and can be engaged and locked with the external thread by the nut, wherein the external thread has a plurality of grooves distributed along the circumference, and the plurality of grooves extend in the axial direction, so that when locking, the external thread is radially tightened to fix the spherical connector in the spherical cavity.

[0015] In some examples, the mounting portion is provided with the connecting rod, the connecting portion is provided with the spherical cavity, the connecting portion is provided with a slide groove and a slider movable in the slide groove along the axial direction, and the slider is capable of moving between a locked position and an unlocked position, wherein, in the locked position, the slider is capable of engaging with the spherical connector of the connecting rod and preventing the spherical connector from separating from the spherical cavity; wherein, in the unlocked position, the slider is capable of separating from the spherical connector of the connecting rod, and the spherical connector is capable of rotating in the spherical cavity or is capable of separating from the spherical cavity.

[0016] In some examples, the locking structure includes a magnet disposed in a spherical cavity, and the spherical connector is made of an iron material, wherein the spherical connector is installed in the spherical cavity and magnetically attracted to the magnet in the spherical cavity.

[0017] In some examples, one of the connecting portion and the mounting portion is provided with a connecting rod, an end of the connecting rod is provided with a spherical connector, and the other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connector, wherein the spherical connector and the spherical cavity are interference fit or joined by soft glue.

[0018] In some examples, the heat absorbing medium is a phase change material, a gel material, or oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0020] FIG1 shows a front view of a neck-hanging fan according to at least one embodiment of the present disclosure;

[0021] FIG2 shows a perspective view of a neck-hanging fan according to at least one embodiment of the present disclosure;

[0022] FIG3 illustrates a front view of a halter component according to at least one embodiment of the present disclosure;

[0023] FIG4 shows a partial cross-sectional view taken along line AA of FIG3 ;

[0024] FIG5 shows a partial view of the halter fan shown in FIG1 ;

[0025] FIG6 shows a cross-sectional view taken along line BB of FIG5 ;

[0026] FIG7 illustrates a side view of a halter fan according to at least one embodiment of the present disclosure, wherein the halter component is omitted;

[0027] FIG8 shows a cross-sectional view taken along line CC of FIG7 , which shows an embodiment of the locking mechanism, when the slider is in the unlocked position;

[0028] FIG9 shows two positions of the slider of the embodiment shown in FIG8 , wherein the slider shown in solid lines is in an unlocked position, and the slider shown in dotted lines is in a locked position;

[0029] FIG10 shows a perspective view of a fan assembly according to at least one embodiment of the present disclosure;

[0030] FIG11 shows a side view of the embodiment shown in FIG10 ;

[0031] FIG12 shows another perspective view of the embodiment shown in FIG10 , in which the outer shell portion of the fan body is omitted;

[0032] FIG13 shows a front view of a neck-hanging fan according to another embodiment of the present disclosure;

[0033] FIG14 shows a partial cross-sectional view taken along line DD of FIG13;

[0034] FIG15 shows a partial side view of the embodiment shown in FIG13;

[0035] FIG16 shows a part diagram of the second housing of the embodiment shown in FIG13 ;

[0036] FIG17 shows a partial perspective view of a neck-hanging fan according to another embodiment of the present disclosure;

[0037] FIG18 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0038] FIG19 shows a cross-sectional view taken along line EE of FIG18;

[0039] FIG20 shows a partial perspective view of a neck-hanging fan according to yet another embodiment of the present disclosure;

[0040] FIG21 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0041] FIG22 shows a cross-sectional view taken along line FF of FIG21;

[0042] FIG23 shows a partial perspective view of a neck-hanging fan according to another embodiment of the present disclosure;

[0043] FIG24 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0044] FIG25 shows a cross-sectional view taken along line GG of FIG24;

[0045] FIG26 shows a partial perspective view of a neck-hanging fan according to yet another embodiment of the present disclosure;

[0046] FIG27 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0047] FIG28 shows a cross-sectional view taken along line HH of FIG27;

[0048] FIG29 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0049] FIG30 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0050] FIG31 shows a cross-sectional view taken along line II of FIG30;

[0051] FIG32 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0052] FIG33 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0053] FIG34 shows a cross-sectional view taken along line JJ of FIG33;

[0054] FIG35 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0055] FIG36 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0056] FIG37 shows a cross-sectional view taken along line KK of FIG36 ;

[0057] FIG38 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0058] FIG39 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0059] FIG40 shows a cross-sectional view taken along line LL of FIG39;

[0060] FIG41 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0061] FIG42 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0062] FIG43 shows a cross-sectional view taken along line MM of FIG42;

[0063] FIG44 shows a partial perspective view of a halter fan according to yet another embodiment of the present disclosure;

[0064] FIG45 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0065] FIG46 shows a cross-sectional view taken along line NN of FIG45;

[0066] FIG47 shows a partial perspective view of a halter fan according to yet another embodiment of the present disclosure;

[0067] FIG48 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0068] FIG49 shows a cross-sectional view taken along line OO of FIG48;

[0069] FIG50 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0070] FIG51 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0071] FIG52 shows a cross-sectional view taken along line PP of FIG51;

[0072] FIG53 shows a partial perspective view of a halter fan according to another embodiment of the present disclosure;

[0073] FIG54 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0074] FIG55 shows a cross-sectional view taken along line QQ of FIG54;

[0075] FIG56 shows a partial perspective view of a halter fan according to yet another embodiment of the present disclosure;

[0076] FIG57 shows a partial side view of a halter fan according to yet another embodiment of the present disclosure;

[0077] FIG58 shows a cross-sectional view taken along line RR of FIG57. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0079] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0080] The preferred embodiments of the neck hanging fan according to the present disclosure will be described in detail below with reference to the accompanying drawings.

[0081] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, without departing from the concept of the present disclosure, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0082] A neck-hanging fan is a portable fan worn around the neck. One known neck-hanging fan features multiple fans mounted on the neck-contacting part, blowing air at multiple locations around the user's neck. However, this type of neck-hanging fan requires complex air inlet and outlet ducts, which is costly. Furthermore, the airflow from a neck-hanging fan is at ambient temperature. Outdoors in high summer temperatures, the airflow from a neck-hanging fan is also high in temperature, resulting in a poor cooling effect.

[0083] Furthermore, in order to improve the cooling effect, it is known to provide a semiconductor cooling plate on the neck member for active cooling. However, the power of the semiconductor cooling plate is relatively high, resulting in increased power consumption.

[0084] Elements filled with heat-absorbing media, such as phase change materials, gel materials or oil, can absorb heat through the transformation of solid-liquid properties or their own high specific heat capacity. Such heat-absorbing elements can be attached to the human body to cool down and provide a refreshing effect.

[0085] To address the shortcomings of existing technologies, the present disclosure proposes a novel neck-hanging fan. This design detachably connects a neck-hanging component filled with a heat-absorbing medium to a fan. This simple structure and low cost achieve excellent ventilation and cooling effects, while also being energy-efficient and environmentally friendly. The following describes exemplary embodiments of the neck-hanging fan proposed in the present disclosure with reference to the accompanying drawings.

[0086] Figures 1 to 6 illustrate a neck-hanging fan according to at least one embodiment of the present disclosure. As shown in Figure 1, the neck-hanging fan includes a fan assembly 1, a neck-hanging component 2, and at least one connection module 3 connecting the fan assembly 1 and the neck-hanging component 2. In the embodiment shown in Figures 1 and 2, two fan assemblies 1 and two corresponding connection modules 3 are shown. The number of fan assemblies and connection modules can be more or less, and the present disclosure is not limited to this. The connection module 3 can detachably connect the fan assembly 1 and the neck-hanging component 2 together.

[0087] The neck strap 2 is formed into an arcuate shape that fits snugly around the neck, allowing it to be worn comfortably and closely to the skin. It is made of a polymer material, such as polyurethane (TPU), and is filled with a heat-absorbing medium. This heat-absorbing medium can be, for example, a phase change material, a gel, or oil.

[0088] Phase change materials (PCMs) are substances that change form with temperature and can generate latent heat. The process by which a PCM changes from solid to liquid or vice versa is called a phase change, during which the PCM absorbs or releases a significant amount of latent heat. Water is the most common PCM. When the temperature drops below 0°C, water changes from liquid to solid (freezing). When the temperature rises above 0°C, water changes from solid to liquid (melting). During the freezing process, it absorbs and stores a significant amount of cold energy, while during the melting process, it absorbs a significant amount of heat energy. For this embodiment, in addition to water, the preferred phase change material can be a solid-liquid phase change material with a phase change temperature (or freezing point) around room temperature (16°C to 33°C), such as higher aliphatic hydrocarbons (n-hexadecane, n-octadecane, paraffin, etc.), fatty acids and their esters (stearic acid, palmitic acid, etc.), crystalline hydrated salts (Na2SO4·10H2O, Mn(NO3)2·6H2O, etc.), molten salts (LiF, NaF, CaF2, etc.), metals and alloys (lead-tin alloy, etc.) and polymers (polyethylene glycol, etc.).

[0089] During actual use, the neck halter 2 filled with phase change material can be stored at a low temperature for a period of time and then removed. At this time, the phase change material is in a solid state. The neck halter 2 is then connected to the fan assembly 1 via the connection module 3, so that it can be hung around the human neck for cooling and ventilation. Because the neck halter 2 and the connection module 3 are detachable, when the temperature of the phase change material in the neck halter 2 approaches room temperature and the cooling effect becomes poor, the neck halter 2 can be removed and replaced with a new neck halter 2 that has been stored at a low temperature, making replacement convenient.

[0090] How to removably connect the halter component 2 to the connection module 3 in a simple and cost-effective manner is a technical challenge that needs to be solved. First, TPU filled with phase change material is difficult to form a connection shell on its own. A separate external shell is required to enclose the TPU material, and additional elastic components are required to provide compliance and flexibility. This leads to a complex structure and higher costs. Furthermore, since TPU material does not directly adhere to human skin, its cooling effect is also affected.

[0091] Therefore, the present disclosure provides a new connection method, by providing a mounting hole on at least one end of the neck hanging component, and connecting the end to the connection module through a hole-column joint. This connection method is simple and cost-effective, and does not require an additional shell or connector to be provided on the neck hanging component.

[0092] In addition, the present disclosure also provides a process for manufacturing such a halter component, which may include the following steps:

[0093] S1. Providing a hollow TPU material with at least one end being open;

[0094] S2, injecting heat absorbing medium into TPU material;

[0095] S3, pressing the open ends of the TPU material tightly and fusing them together using ultrasonic welding;

[0096] S4. Processing through holes in the fused parts.

[0097] It should be noted that the neck hanging component may not be provided with a mounting hole, but instead an adhesive or glue may be used to connect the neck hanging component to the connection module.

[0098] Figures 3 and 4 further illustrate the structure of the mounting hole 5 of the neck halter 2. As shown in Figure 4, the mounting hole 5 may have a stepped hole structure, including a first countersunk portion 51, a second countersunk portion 52, and a through-hole portion 53 between the first countersunk portion 51 and the second countersunk portion 52. The diameter of the through-hole portion 53 is smaller than the diameters of the first countersunk portion 51 and the second countersunk portion 52, thereby forming a flange 54 between the through-hole portion 53 and the first countersunk portion 51 and / or the second countersunk portion 52. For example, the first countersunk portion 51 and the second countersunk portion 52 may be symmetrically arranged relative to the through-hole portion 53.

[0099] Returning to the embodiments of Figures 1 to 6, the connection module 3 includes a first part 31 and a second part 32 along the axial direction, which are respectively used to connect the neck hanging part 2 and the fan assembly 1. The first part 31 is detachably connected to the neck hanging part 2, and the second part 32 is detachably connected to the fan assembly 1.

[0100] As shown in the cross-sectional view of Figure 6 , the connection module 3 is comprised of two housing halves, referred to as the first housing 33 and the second housing 34 . Each housing 33 , 34 includes a cover and a main body provided with mounting posts 61 , 62 . The cover and main body can be connected, for example, using a snap-fit ​​connection. In the embodiment shown in Figure 6 , the first mounting post 61 abuts against one surface of the flange 54 of the mounting hole 5 , while the second mounting post 62 abuts against the opposite surface of the flange 54 of the mounting hole 5 .

[0101] FIG. 6 shows two optional embodiments of the mounting post 6 .

[0102] The sidewall of the first mounting post 61 of the first housing 33 has an arcuate surface that mates with the first countersunk portion 51 and / or the second countersunk portion 52 of the first end 21 or second end 22 of the neck halter 2. The end of the first mounting post 61 that contacts the flange 54 has a diameter that is substantially equal to that of the flange 54, and the opposite end is open. A cover can seal this opening.

[0103] The sidewall of the second mounting post 62 of the second housing 34 may also have an arcuate surface that mates with the first countersunk portion 51 and / or the second countersunk portion 52 of the first end 21 or second end 22 of the neck member 2, and the end of the second mounting post 62 that contacts the flange 54 also has a diameter that is substantially equal to that of the flange 54. The difference lies in that the second mounting post 62 has a through-hole structure that is coaxial with the second mounting post 62 and accommodates a third mounting post 63 provided on the mating cover. The third mounting post 63 passes through the through-hole structure of the second mounting post 62 and, together with the end of the second mounting post 62, abuts against a surface of the flange 54. Preferably, the first mounting post 61, the second mounting post 62, the third mounting post 63, and the through-hole portion 53 are coaxial with each other.

[0104] The above two structures of mounting posts 6 can be used in combination or separately. Preferably, when the two structures of mounting posts 6 are used in combination, two mirror-symmetrical connection modules 3 can reuse the mounting posts 6 of the two structures. The only difference is that the order of the two structures is swapped. Accordingly, the order of the first shell 33 and the second shell 34 is also swapped. This can save mold manufacturing costs and all parts for the two connection modules 3 can be produced with a single set of molds.

[0105] When installing the neck hanger 2, the first countersunk portion 51 of the first end portion 21 or the second end portion 22 of the neck hanger 2 is first engaged with the first mounting post 61 of the first housing 33, then the second mounting post 62 of the second housing 34 is engaged with the second countersunk portion 52, and finally the third mounting post 63 of the cover of the second housing 34 is inserted into the through-hole structure of the second mounting post 62, and the flange 54 is pressed against it. Conversely, when disassembling the neck hanger 2, the cover of the second housing 34 and its third mounting post 63 are first pulled out of the through-hole structure of the second mounting post 62, and then the second mounting post 62 is separated from the second countersunk portion 52. This allows the first end portion 21 or the second end portion 22 of the neck hanger 2 to be separated from the first housing 33.

[0106] In an alternative embodiment, the mounting hole 5 may be configured as a through hole, and the mounting post 6 directly passes through the through hole and cooperates with the inner wall of the through hole.

[0107] In addition to connecting the end of the neck halter assembly to the connection module, the present disclosure also proposes various connection methods for the fan assembly to the connection module, which will be described in detail later in conjunction with the accompanying drawings. It should be noted that those skilled in the art may adopt one or more, or a combination of, the connection methods disclosed in this disclosure.

[0108] 7 to 12 exemplarily illustrate a neck-hanging fan according to at least one embodiment of the present disclosure, which illustrate an optional connection method between the fan assembly and the connection module.

[0109] As shown in Figures 10 to 12, the fan assembly 1 may include a fan body 11 and a mounting portion 12 arranged on one side of the fan body. The fan body 11 has a roughly cylindrical profile, on which an air inlet 13 and an air outlet 14 are arranged. The air inlet 13 is arranged on the opening of the top surface of the fan body 11 and can be surrounded by an upper cover 15 that partially covers the opening. There is a gap between the upper cover 15 and the opening on the top surface of the fan body 11, and air can enter the fan body 11 through the gap. The air outlet 14 is arranged around the circumferential side wall of the fan body 11, and is preferably facing the neck or face of the human body. Exemplarily, the air outlet 14 includes a plurality of through slots arranged in parallel along the circumferential side wall.

[0110] As shown in Figure 12, a fan blade assembly 111 and a drive motor 112 are provided in the fan body 11. The drive motor 112 is used to drive the fan blade assembly 111 to rotate, thereby generating airflow and continuously outputting airflow for the human body. In order to facilitate the discharge of air from the side wall of the fan body 11, the fan blade assembly 111 is non-concentric with the fan body 11, and it is preferred to set the distance from the edge of the fan blade assembly 11 to the inner wall of the fan body 11 to be involute distribution, and reach the maximum distance at the air outlet 14. For the sake of simplicity of description, the present disclosure omits other elements of the fan assembly 1 that are less relevant to the concept of the present disclosure, such as batteries, control circuit boards, wires and other common elements of fan assemblies. Those skilled in the art can adjust and set them according to actual needs.

[0111] 8 and 10 , the mounting portion 12 is provided with a connecting rod 7, which extends from the side wall of the fan body 11 and has a spherical connector 71 at its end. As shown in the cross-sectional view of FIG8 , a screw hole can be provided at the bottom of the connecting rod 7 for mounting on the fan body 11 by screws.

[0112] As shown in Figure 7, a connecting portion 35 is provided at the second part 32 of the connecting module 3. The side of the connecting portion 35 has an opening and is provided with a spherical cavity 8 for accommodating the spherical connector 71. The size of the spherical cavity 8 basically matches the spherical connector 71. The spherical connector 7 can enter the spherical cavity 8 from the side opening of the connecting portion 35 to allow the spherical connector 7 to rotate freely along the surface of the spherical cavity 8, so that the spatial angle of the fan assembly 1 relative to the connecting module 3 can be flexibly adjusted to adjust the appropriate air outlet angle blowing towards the human body.

[0113] In order to fix the position of the spherical connector 71, the neck hanging fan further includes a locking structure 9, and the spherical connector 71 and the spherical cavity 8 are locked or unlocked with each other through the locking structure 9. Specifically, when locked, the spherical connector 71 is fixed in the spherical cavity 8; when unlocked, the spherical connector 71 can rotate in the spherical cavity 8 or can be separated from the spherical cavity 8.

[0114] It should be noted that "the spherical connector 71 is fixed in the spherical cavity 8" can include the following two situations: one is that the spherical connector 71 is completely fixed in the spherical cavity 8, at this time the spherical connector 71 cannot move or rotate relative to the spherical cavity 8; the other is that the spherical connector 71 cannot be separated from the spherical cavity 8, but can rotate at a certain angle.

[0115] Figures 8 and 9 illustrate an embodiment of the locking structure 9. The connecting portion 35 is provided with a slide groove 921 along the axial direction and a slider 922 movable within the slide groove 921. The slider 922 is movable between a locked position and an unlocked position. In this embodiment, the slider 922 is provided above the opening on the side of the connecting portion 35.

[0116] 8 , the slider 922 is separated from the spherical connector 71 of the connecting rod 7 , and the spherical connector 71 can be separated from the spherical cavity 8 . In other words, the spherical connector 71 can also be installed into the spherical cavity 8 in the unlocked position.

[0117] After the spherical connector 71 is inserted into the spherical cavity 8, it can be moved downward in the axial direction (in the direction of the arrow in FIG. 9 ) by a distance d. At this point, the slider 922 reaches the downward limit position in the slide groove (indicated by the dotted line in FIG. 9 ), and the locking structure 9 is in the locked position. In the locked position, the slider 922 can engage with the spherical connector 71 of the connecting rod 7 and prevent the spherical connector 71 from being separated from the spherical cavity 8. In particular, due to the restriction of the slider 922, the spherical connector 71 cannot be removed from the opening on the side of the connecting portion 35.

[0118] Figures 13 to 16 exemplarily illustrate another embodiment of a neck-hanging fan of the present disclosure. For the sake of brevity, the following will mainly describe the differences between this embodiment and the previous embodiment. The structure of the undescribed parts can be referred to the previous embodiment and will not be repeated here. This description method is also applicable to all embodiments described below.

[0119] In this embodiment, the locking structure 9 includes an external thread 911 that at least partially surrounds the spherical cavity 8 and a nut 912 that cooperates with the external thread 911. The spherical connector 71 is accommodated within the spherical cavity 8 and can be locked by the nut 912 in meshing engagement with the external thread 911. The external thread 911 has a plurality of grooves 913 distributed along the circumference. The grooves 913 extend in the axial direction, allowing the external thread 911 to move a certain amount in the radial direction. Therefore, when locked, the external thread 911 can be radially tightened to secure the spherical connector 71 within the spherical cavity 8. The external thread 911 can be made of, for example, a hard plastic with a certain degree of elasticity.

[0120] Optionally, the groove 913 may also be formed by splicing two half grooves of the two shell halves 33 , 34 , as shown in FIG. 15 .

[0121] The fan assembly 1 can be connected to the connection module 3 by following the following steps. First, unscrew the nut 912 from the external thread 911 and insert it onto the connecting rod 7. Then, insert the spherical connector 71 of the fan assembly 1 into the spherical cavity 8. Finally, screw the nut 912 into the external thread 911, tightening the external thread 911 radially to secure the spherical connector 71 in the spherical cavity 8. Conversely, unscrew the nut 912 from the external thread 911 to remove the spherical connector 71 from the spherical cavity 8.

[0122] Furthermore, in this embodiment, a protrusion 64 can be provided at the end of the second mounting post 62 of the second housing 34. The cross-section of the protrusion 64 can be, for example, cross-shaped, hexagonal, or straight-shaped. The protrusion 64 passes through the through-hole portion 53 of the mounting hole 5 and engages with the inner wall of the through-hole portion 53, as shown in Figures 14 and 16.

[0123] Figures 17 to 19 illustrate another embodiment of a neck-hanging fan according to the present disclosure. Unlike the previous embodiment, this embodiment's locking mechanism 9 includes a magnet 931 positioned within the spherical cavity 8, and the spherical connector 71 is made of iron. Therefore, the spherical connector 71 fits within the spherical cavity 8 and magnetically engages with the magnet 931 within the cavity 8. To remove the fan, simply apply external force to overcome the magnetic force and the spherical connector 71 can be removed.

[0124] In the embodiments of Figures 17 to 19, the connecting portion 35 of the connecting module 3 is provided with a connecting rod 7, an end of which is provided with a spherical connector 71, and the mounting portion 12 of the fan assembly 1 is provided with a spherical cavity 8 for accommodating the spherical connector 71.

[0125] Figures 20 to 22 exemplarily illustrate another embodiment of a neck-hanging fan of the present disclosure. Unlike the previous embodiment, the spherical cavity 8 of this embodiment is provided in the connecting portion 35 of the connecting module 3, and the connecting rod 7 and the spherical connector 71 are provided in the mounting portion 12 of the fan assembly 1.

[0126] Figures 23 to 25 exemplarily illustrate a neck-hanging fan according to another embodiment of the present disclosure. Unlike the aforementioned embodiment, the spherical connector 71 and the spherical cavity 8 of this embodiment are connected by soft glue 941. The soft glue 941 is a type of deformable and plastic rubber, gel or plastic product. For example, the soft glue 941 can be fixedly arranged on the inner wall of the spherical cavity 8. When the spherical connector 71 contacts and engages with the soft glue 941, the soft glue 941 is deformed to wrap the spherical connector 71. The surface of the soft glue 941 has a certain friction force, which can fix the spherical connector 71 in a given position. When disassembly is required, the spherical connector 71 can be pulled out by overcoming the friction force.

[0127] In the embodiments of Figures 23 to 25, the connecting portion 35 of the connecting module 3 is provided with a connecting rod 7, an end of which is provided with a spherical connector 71, and the mounting portion 12 of the fan assembly 1 is provided with a spherical cavity 8 for accommodating the spherical connector 71.

[0128] Figures 26 to 28 illustrate another embodiment of a neck-hanging fan according to the present disclosure. Unlike the previous embodiment, the spherical cavity 8 of this embodiment is provided at the connection portion 35 of the connection module 3, and the connecting rod 7 and the spherical connector 71 are provided at the mounting portion 12 of the fan assembly 1.

[0129] Figures 29 to 31 illustrate another embodiment of a neck-hanging fan according to the present disclosure. Unlike the previous embodiment, this embodiment employs an interference fit between the spherical connector 71 and the spherical cavity 8. To achieve this interference fit, for example, a hard plastic material 942 may be fixed to the inner wall of the spherical cavity 8. This interference fit secures the spherical connector 71 in a given position. During disassembly, the spherical connector 71 can be removed by overcoming the interference fit resistance.

[0130] In the embodiments of Figures 29 to 31, the connecting portion 35 of the connecting module 3 is provided with a connecting rod 7, the end of which is provided with a spherical connector 71, and the mounting portion 12 of the fan assembly 1 is provided with a spherical cavity 8 for accommodating the spherical connector 71.

[0131] Figures 32 to 34 illustrate another embodiment of a neck-hanging fan according to the present disclosure. Unlike the previous embodiment, the spherical cavity 8 of this embodiment is provided at the connection portion 35 of the connection module 3, and the connecting rod 7 and the spherical connector 71 are provided at the mounting portion 12 of the fan assembly 1.

[0132] Figures 35 to 37 illustrate exemplary embodiments of a neck-hanging fan according to another embodiment of the present disclosure. Unlike the aforementioned embodiments, this embodiment further includes an intermediate connector 95 having a substantially cylindrical body and disposed between the connecting portion 35 and the mounting portion 12. One end of the intermediate connector 95 is provided with a pair of hinged portions 952 opposed to each other, defining a mounting gap between the pair of hinged portions 952 and a pin hole extending along a first axis A perpendicular to the axial direction. The other end of the intermediate connector 95 is provided with a connecting portion mounting hole 953 extending along a second axis B parallel to the axial direction for accommodating the connecting portion.

[0133] In this embodiment, the connecting portion 35 is provided with a connecting rod 7, which can be inserted into the connecting portion mounting hole 953 and rotated along the second axis B. The connecting rod 7 can be provided with a locking structure, which is configured to prevent the connecting rod 7 from being separated from the connecting portion mounting hole 953 after the connecting rod 7 is inserted into the connecting portion mounting hole 953. In this embodiment, the locking structure may include a protrusion 72 provided on a circumferential side wall of the connecting rod 7, and the inner wall of the connecting portion mounting hole 953 is provided with an annular groove 951 that cooperates with the protrusion 72.

[0134] Correspondingly, the connecting portion 35 is provided with a rotating portion 96, which is inserted into the installation gap and is provided with a through hole along the first axis A. The rotating portion 96 and a pair of hinged portions 952 are connected by a pin 961, so that the rotating portion 96 can rotate along the first axis A relative to the intermediate connecting member 95.

[0135] When connecting the fan assembly 1 and the connection module 3, the rotating portion 96 is first installed into the installation gap between the pair of hinged portions 952, and then the two are connected using the pin 961. The connecting rod 7 of the fan assembly 1 can then be inserted into the connection portion mounting hole 953. When installed in place, the protrusion 72 snaps into the annular groove 951, making it difficult to separate the connecting rod 7 from the connection portion mounting hole 953. The above steps can also be reversed, that is, the connecting rod 7 is first inserted into the connection portion mounting hole 953, and then the rotating portion 96 is installed into the installation gap between the pair of hinged portions 952.

[0136] After installation, the fan assembly 1 and the connecting module 3 can be rotated around the first axis A by adjusting the rotating part 96 and a pair of hinged parts 952, or rotated around the second axis B by adjusting the connecting rod 7, so that the spatial angle between the fan assembly 1 and the connecting module 3 can be flexibly adjusted in the degrees of freedom of the two axes.

[0137] 38 to 40 exemplarily illustrate another embodiment of a neck-hanging fan of the present disclosure. Unlike the previous embodiment, the connecting rod 7 of this embodiment is provided on the connecting portion 35 of the connecting module 3, and the rotating portion 96 is provided on the mounting portion 12 of the fan assembly 1.

[0138] Figures 41 to 43 exemplarily illustrate a neck-hanging fan according to another embodiment of the present disclosure. Unlike the aforementioned embodiment, the locking structure includes at least one through-hole provided on the circumferential side wall of the connecting rod 7, at least one steel ball 76 capable of passing through the through-hole, and a reset elastic member 73 connected to the at least one steel ball 76, and the reset elastic member 73 applies an elastic force protruding from the through-hole to the steel ball 76. In this embodiment, the locking structure includes two steel balls 76, and the reset elastic member 73 can be a leaf spring, a disc spring, a ring spring or a rubber elastic ring, etc., with its two ends respectively connected to the two steel balls 76. The diameter of the through-hole is preferably smaller than the diameter of the steel ball 76 and larger than half the diameter of the steel ball 76, and the depth of the through-hole is also smaller than the diameter of the steel ball 76, so as to allow at least a portion of the steel ball 76 to be exposed from the circumferential side wall of the connecting rod 7.

[0139] Correspondingly, an annular groove 951 is provided on the inner wall of the connection portion mounting hole 953 to cooperate with the steel ball 76 .

[0140] When it is necessary to connect the fan assembly 1 and the connection module 3, the connecting rod 7 is first inserted into the connection portion mounting hole 953. The steel ball 76 is retracted into the circumferential side wall of the connecting rod 7 under the constraint of the connection portion mounting hole 953, and the connecting rod 7 is installed in place. At this time, the steel ball 76 cooperates with the annular groove 951 and is stuck in the annular groove 951. Due to the elastic force applied to the steel ball 76 by the reset elastic member 73, the steel ball 76 is retained in the annular groove 951, thereby preventing the connecting rod 7 from sliding out of the connection portion mounting hole 953. The steps of installing the rotating portion 96 at the other end into the installation gap between the pair of hinged portions 952 are the same as those in the previous embodiment and will not be repeated here.

[0141] In this embodiment, the rotating portion 96 is provided on the connecting portion 35 of the connecting module 3 , and the connecting rod 7 is provided on the mounting portion 12 of the fan assembly 1 .

[0142] 44 to 46 exemplarily illustrate another embodiment of a neck-hanging fan of the present disclosure. Unlike the previous embodiment, the connecting rod 7 of this embodiment is provided on the connecting portion 35 of the connecting module 3, and the rotating portion 96 is provided on the mounting portion 12 of the fan assembly 1.

[0143] Figures 47 to 49 illustrate another embodiment of a neck-hanging fan according to the present disclosure. Unlike the aforementioned embodiments, the locking structure includes a buckle 74 disposed on the circumferential sidewall of the connecting rod 7, and the inner wall of the connecting portion mounting hole 953 is provided with an annular groove 951 that cooperates with the buckle 74. Furthermore, an unlocking button 75 is provided on the side of the buckle 74 away from the connecting portion mounting hole 953. The unlocking button 75 is connected to the buckle 74 so that when the unlocking button 75 is pressed, the buckle 74 is radially tightened to allow the buckle 74 to separate from the annular groove 951.

[0144] In the embodiments shown in FIG. 47 to FIG. 49 , the rotating portion 96 is provided on the connecting portion 35 of the connecting module 3 , and the connecting rod 7 is provided on the mounting portion 12 of the fan assembly 1 .

[0145] 50 to 52 exemplarily illustrate another embodiment of a neck-hanging fan of the present disclosure. Unlike the previous embodiment, the connecting rod 7 of this embodiment is disposed on the connecting portion 35 of the connecting module 3 , and the rotating portion 96 is disposed on the mounting portion 12 of the fan assembly 1 .

[0146] Figures 53 to 55 exemplarily illustrate a neck hanging fan according to another embodiment of the present disclosure. Unlike the aforementioned embodiment, the locking structure includes a magnet 931 provided at the end of the connecting rod 7, and the bottom wall of the connecting portion mounting hole 953 is provided with another magnet 932 having a magnetic pole opposite to that of the magnet 931. Alternatively, the bottom wall of the connecting portion mounting hole 953 may be provided with an iron block or other iron element. Therefore, the end of the connecting rod 7 and the bottom wall of the connecting portion mounting hole 953 are attracted by magnetic force. When disassembly is required, the connecting rod 7 and the connecting portion mounting hole 953 can be separated by overcoming the magnetic force.

[0147] The following clauses provide examples of the halter fan disclosed herein.

[0148] Item 1: A neck hanging fan, comprising:

[0149] The fan assembly comprises a fan body and a mounting portion arranged on one side of the fan body;

[0150] a neck halter component, configured to be worn around a human neck, the neck halter component being filled with a heat-absorbing medium, the neck halter component comprising a first end portion and a second end portion sealed to each other, and an arc-shaped body between the first end portion and the second end portion, at least one of the first end portion and the second end portion being provided with a mounting hole; and

[0151] At least one connecting module, the at least one connecting module connecting the fan assembly and the neck hanging component, wherein the at least one connecting module includes a first part and a second part, the first part is detachably connected to the neck hanging component, and the second part is detachably connected to the mounting portion of the fan assembly,

[0152] The first portion is provided with a mounting post and at least partially passes through the mounting hole of the first end portion and / or the second end portion.

[0153] Item 2: The neck-hanging fan as described in Item 1, wherein the at least one connection module is formed by two shell halves, at least one of the two shell halves is provided with a mounting column at the first part, and a connecting part is provided at the second part, which is configured to be detachably connected to the mounting part of the fan assembly.

[0154] Item 3: The neck hanging fan as described in Item 1 or 2, wherein the mounting hole is a through hole, and the mounting post passes through the through hole and cooperates with the inner wall of the through hole.

[0155] Clause 4: The neck hanging fan according to Clause 1 or 2, wherein the mounting hole is a stepped hole structure, including a first countersunk portion, a second countersunk portion, and a through-hole portion between the first countersunk portion and the second countersunk portion, wherein the diameter of the through-hole portion is smaller than the diameters of the first countersunk portion and the second countersunk portion, so as to form a flange between the through-hole portion and the first countersunk portion and / or the second countersunk portion.

[0156] wherein the mounting post abuts against at least one surface of the flange, or

[0157] Wherein, the mounting post passes through the through hole portion.

[0158] Clause 5: The neck hanging fan according to Clause 2, wherein one of the connecting portion and the mounting portion is provided with a connecting rod, an end of the connecting rod is provided with a spherical connector, and the other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connector.

[0159] In which, the neck-hanging fan also includes a locking structure, and the spherical connector and the spherical cavity are locked or unlocked with each other through the locking structure, and in which, when locked, the spherical connector is fixed in the spherical cavity, and when unlocked, the spherical connector can rotate in the spherical cavity or can be separated from the spherical cavity.

[0160] Clause 6: The neck hanging fan according to Clause 5, wherein the locking structure includes an external thread at least partially surrounding the spherical cavity and a nut cooperating with the external thread, the spherical connector is accommodated in the spherical cavity and can be locked by engaging with the external thread through the nut.

[0161] The external thread has a plurality of grooves distributed along the circumferential direction, and the plurality of grooves extend along the axial direction, so that when locking, the external thread is tightened in the radial direction to fix the spherical connector in the spherical cavity.

[0162] Clause 7: The neck hanging fan according to Clause 5, wherein the mounting portion is provided with the connecting rod, the connecting portion is provided with the spherical cavity, the connecting portion is provided with a slide groove and a slider movable in the slide groove along the axial direction, and the slider is movable between a locked position and an unlocked position.

[0163] wherein, in the locked position, the slider is capable of engaging with the spherical connector of the connecting rod and preventing the spherical connector from being separated from the spherical cavity;

[0164] Wherein, in the unlocking position, the slider can be separated from the spherical connector of the connecting rod, and the spherical connector can rotate in the spherical cavity or can be separated from the spherical cavity.

[0165] Clause 8: The neck-hanging fan as described in Clause 5, wherein the locking structure includes a magnet disposed in a spherical cavity, and the spherical connector is made of an iron material, wherein the spherical connector is installed in the spherical cavity and is magnetically attracted to the magnet in the spherical cavity.

[0166] Clause 9: The neck hanging fan according to Clause 2, wherein one of the connecting portion and the mounting portion is provided with a connecting rod, an end of the connecting rod is provided with a spherical connector, and the other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connector.

[0167] The spherical connector and the spherical cavity are interference-fitted or joined by soft glue.

[0168] Item 10: The neck-hanging fan as described in Item 1, wherein the heat-absorbing medium is a phase change material, a gel material or oil.

[0169] Clause 11: The neck hanging fan according to Clause 2 further includes: an intermediate connecting member, the intermediate connecting member having a substantially cylindrical body and being disposed between the connecting portion and the mounting portion, one end of the intermediate connecting member being provided with a pair of hinged portions opposed to each other, a mounting gap being defined between the pair of hinged portions, and a pin hole penetrating along a first axis perpendicular to the axial direction, and the other end of the intermediate connecting member being provided with a connecting portion mounting hole along a second axis parallel to the axial direction for accommodating the connecting portion,

[0170] wherein one of the connecting portion and the mounting portion is provided with a connecting rod, the connecting rod being capable of being inserted into the connecting portion mounting hole and rotating along the second axis, the connecting rod being provided with a locking structure, the locking structure being configured to prevent the connecting rod from being separated from the connecting portion mounting hole after the connecting rod is inserted into the connecting portion mounting hole;

[0171] Among them, the other of the connecting part and the mounting part is provided with a rotating part, the rotating part is installed in the mounting gap, and is provided with a through hole along the first axis. The rotating part and the pair of hinged parts are connected by pins, so that the rotating part can rotate along the first axis relative to the intermediate connecting member.

[0172] Clause 12: The neck hanging fan according to Clause 11, wherein the locking structure includes a protrusion provided on the circumferential side wall of the connecting rod, and the inner wall of the connecting portion mounting hole is provided with an annular groove that cooperates with the protrusion.

[0173] Clause 13: A neck-hanging fan as described in Clause 11, wherein the locking structure includes at least one through hole arranged on the circumferential side wall of the connecting rod, at least one steel ball capable of passing through the through hole, and a reset elastic member connected to the at least one steel ball, the inner wall of the connecting portion mounting hole is provided with an annular groove cooperating with the at least one steel ball, and the reset elastic member applies an elastic force protruding from the through hole to the steel ball so that the at least one steel ball cooperates with the annular groove when installed in place.

[0174] Clause 14: A neck-hanging fan as described in Clause 11, wherein the locking structure includes a buckle arranged on the circumferential side wall of the connecting rod, and the inner wall of the connecting part mounting hole is provided with an annular groove that cooperates with the buckle, and wherein an unlocking button is also provided on the side of the buckle away from the connecting part mounting hole, and the unlocking button is connected to the buckle so that when the unlocking button is pressed, the buckle is tightened radially to allow the buckle to separate from the annular groove.

[0175] Item 15: The neck hanging fan according to Item 11, wherein the locking structure includes a magnet provided at the end of the connecting rod, and the bottom wall of the connecting portion mounting hole is provided with an iron block or another magnet with opposite magnetic poles.

[0176] While exemplary implementations of the neck-hanging fan proposed in the present disclosure have been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that various modifications and variations may be made to the aforementioned specific embodiments without departing from the principles of the present disclosure. Furthermore, various combinations of the various technical features and structures proposed in various aspects of the present disclosure may be made without departing from the scope of protection of the present disclosure, which is determined by the appended claims.

[0177] List of reference numerals 1 Fan assembly 11 Fan body 111 Blade assembly 112 Drive motor 12 Mounting portion 13 Air inlet 14 Air outlet 15 Upper cover 2 Neck component 21 First end portion 22 Second end portion 23 Arc-shaped body 3 Connection module 31 First portion 32 Second portion 33 First shell 34 Second shell 35 Connection portion 4 Heat absorbing medium 5 Mounting hole 51 First countersunk portion 52 Second countersunk portion 53 Through-hole portion 54 Flange 6 Mounting column 61 First mounting column 62 Second mounting column 63 Third mounting column 7 Connecting rod 71 Spherical connector 72 Protrusion 73 Reset elastic member 74 Buckle 75 Unlocking button 76 Steel ball 8 Spherical cavity 9 Locking structure 911 External thread 912 Nut 913 Groove 921 Slide groove 922 Slide blocks 931, 932 Magnet 941 Soft glue 942 Hard plastic 95 Intermediate connecting member 951 Annular groove 952 Hinge portion 953 Connecting portion mounting hole 96 Rotating portion 961 Pin A First axis B Second axis

Claims

1. A neck fan, characterized in that, Comprising: A fan assembly, including a fan body and a mounting portion provided on one side of the fan body; A neck-wearing member for wearing around a human neck, the neck-wearing member being filled with a heat-absorbing medium, the neck-wearing member including a first end portion, a second end portion that are hermetically sealed from each other, and an arcuate body between the first end portion and the second end portion, at least one of the first end portion and the second end portion being provided with a mounting hole; and At least one connecting module that connects the fan assembly and the neck-wearing member, wherein the at least one connecting module includes a first part and a second part, the first part being detachably connected to the neck-wearing member, and the second part being detachably connected to the mounting portion of the fan assembly, wherein the first part is provided with a mounting post and at least partially passes through the mounting hole of the first end portion and / or the second end portion.

2. The neck fan according to claim 1, wherein, The at least one connecting module is formed by enclosing two half-shells, and at least one of the two half-shells is provided with a mounting post at the first part and a connecting portion at the second part, configured to be detachably connected to the mounting portion of the fan assembly.

3. The neck-hanging fan according to claim 1 or 2, characterized in that, The mounting hole is a through hole, and the mounting post passes through the through hole and mates with the inner wall of the through hole.

4. The neck fan according to claim 1 or 2, characterized in that, The mounting hole has a stepped hole structure, including a first counterbore portion, a second counterbore portion, and a through hole portion between the first counterbore portion and the second counterbore portion, the diameter of the through hole portion being smaller than the diameters of the first counterbore portion and the second counterbore portion, so as to form a flange between the through hole portion and the first counterbore portion and / or the second counterbore portion, wherein the mounting post abuts against at least one surface of the flange, or wherein the mounting post passes through the through hole portion.

5. The neck fan according to claim 2, wherein One of the connecting portion and the mounting portion is provided with a connecting rod, and a spherical connecting head is provided at an end of the connecting rod, and the other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connecting head, wherein the neck-wearing fan further includes a locking structure, the spherical connecting head and the spherical cavity are locked or unlocked with each other through the locking structure, and wherein, when locked, the spherical connecting head is fixed in the spherical cavity, and when unlocked, the spherical connecting head can rotate in the spherical cavity or can be separated from the spherical cavity.

6. The neck-hanging fan according to claim 5, characterized in that, The locking structure includes an external thread that at least partially surrounds the spherical cavity and a nut that mates with the external thread, the spherical connecting head is accommodated in the spherical cavity, and can be locked by meshing the nut with the external thread, wherein the external thread has a plurality of grooves distributed circumferentially, and the plurality of grooves extend in the axial direction, such that when locked, the external thread contracts radially to fix the spherical connecting head in the spherical cavity.

7. The neck-hanging fan according to claim 5, wherein, The mounting portion is provided with the connecting rod, the connecting portion is provided with the spherical cavity, the connecting portion is provided with a chute in the axial direction and a slider movable in the chute, and the slider can move between a locking position and an unlocking position, wherein, in the locking position, the slider can engage with the spherical connecting head of the connecting rod and prevent the spherical connecting head from separating from the spherical cavity; wherein, in the unlocking position, the slider can separate from the spherical connecting head of the connecting rod, and the spherical connecting head can separate from the spherical cavity.

8. The neck fan according to claim 5, wherein, The locking structure includes a magnet disposed in the spherical cavity. The spherical connector is made of iron material. Among them, the spherical connector is inserted into the spherical cavity and magnetically attracted to the magnet in the spherical cavity.

9. The neck fan according to claim 2, wherein One of the connecting portion and the mounting portion is provided with a connecting rod, and a spherical connector is provided at an end of the connecting rod. The other of the connecting portion and the mounting portion is provided with a spherical cavity for accommodating the spherical connector. Among them, an interference fit exists between the spherical connector and the spherical cavity or they are joined by soft glue.

10. The neck-hanging fan according to claim 1, wherein, The heat absorbing medium is a phase change material, a gel material or oil.

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