CN216381921U

CN216381921U - Hang neck fan

Info

Publication number: CN216381921U
Application number: CN202122619683.7U
Authority: CN
Inventors: 李享福; 郑观正; 谢佳航; 阳应该
Original assignee: Shenzhen Jisu Technology Co Ltd
Current assignee: Shenzhen Jisu Technology Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-26
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a neck hanging fan; the method comprises the following steps: the arc-shaped shell comprises a wearing part matched with the neck and air supply parts on two sides of the wearing part, the air supply parts are provided with accommodating spaces, and air inlets and air outlets are formed in the air supply parts; the fan assembly is arranged in the air supply part and used for leading out air entering from the air inlet through the air outlet uniformly. Make the air current reach far away distance through fan assembly, the air-out does not produce the turbulent flow, and the air-out is even, and this can let the human body feel even blowing, and long-time blowing can not feel tired or uncomfortable.

Description

Hang neck fan

Technical Field

The utility model relates to the technical field of neck hanging fans, in particular to a neck hanging fan.

Background

The neck-hanging fan generally guides air to the air outlet through an air guide structure in the neck-hanging fan, and the air is blown out from the air outlet.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a neck hanging fan and solves the problem of uneven air outlet of the neck hanging fan.

In order to solve the above technical problem, one technical solution adopted by the present invention is to provide a neck hanging fan, including: the arc-shaped shell comprises a wearing part matched with the neck and air supply parts on two sides of the wearing part, the air supply parts are provided with accommodating spaces, and air inlets and air outlets are formed in the air supply parts; and the fan assembly is arranged in the air supply part and used for leading out the air entering from the air inlet uniformly through the air outlet.

Preferably, the wearing part is movably connected with the air supply part, and the air supply part rotates relative to the wearing part.

Preferably, the wearing part and the air supply part are movably connected by a connecting assembly, so that the air supply part rotates relative to the wearing part; the connecting assembly comprises a first connecting sub-assembly and a second connecting sub-assembly, and the first connecting sub-assembly is sleeved on the outer side of the second connecting sub-assembly and rotates relatively; the first connecting sub-piece is arranged at the lower end of the wearing part, and the second connecting sub-piece is arranged at the upper end of the air supply part.

Preferably, the junction of first connecting sub-piece and second connecting sub-piece is provided with the gear subassembly, and the gear subassembly is used for injecing the rotational position of air supply part for wearing the portion, and the gear subassembly is protruding and a plurality of gear recess including at least one gear, gear arch and gear recess adaptation.

Preferably, the junction of first connecting sub-spare and second connecting sub-spare is provided with spacing subassembly, and spacing subassembly is used for injecing the turned angle of wearing portion relative to the air supply portion, and spacing subassembly includes spacing arch and spacing recess, spacing arch and spacing recess adaptation.

Preferably, the fan assembly is a cross-flow fan assembly, and the cross-flow fan assembly comprises a volute, an impeller and a motor for driving the impeller to rotate.

Preferably, the wearing part is detachably connected with the air supply part.

Preferably, the lower part of the wearing part is provided with a first magnetic part, the upper part of the air supply part is provided with a second magnetic part, and the first magnetic part and the second magnetic part are adsorbed to be detachably connected with the wearing part and the air supply part.

Preferably, the air supply part is also internally provided with a control panel, the control panel is connected with a synchronizing piece, the synchronizing piece is mechanically or communicatively connected with the fan assembly in the other air supply part, and the synchronizing piece is used for enabling the fan assemblies in the two air supply parts to be synchronously started or closed.

Preferably, an air deflector for guiding the wind direction is arranged at the air outlet; and a driving component for driving the air guide plate to swing is also arranged in the air supply part, and drives the air guide plate to swing.

The utility model has the beneficial effects that: make the air current reach far away distance through fan assembly, the air-out does not produce the turbulent flow, and the air-out is even, and this can let the human body feel even blowing, and long-time blowing can not feel tired or uncomfortable.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a neck hanging fan according to the utility model;

FIG. 2 is a schematic cross-sectional view of a first embodiment of a muffler fan according to the present invention;

FIG. 3 is a schematic cross-sectional view of a second embodiment of a muffler fan according to the present invention;

FIG. 4 is an exploded view of a second embodiment of the neckhanging fan in accordance with the present invention;

FIG. 5 is a schematic view of a first connecting sub of the first embodiment of the neckhanging fan in accordance with the present invention;

FIG. 6 is a schematic view of a second connecting sub-assembly of the first embodiment of the neckhanging fan in accordance with the present invention;

FIG. 7 is a schematic bottom view of a first connecting sub-assembly of a second embodiment of the neckhanging fan in accordance with the present invention;

FIG. 8 is a schematic view of a second connecting sub-assembly of a second embodiment of the neckhanging fan in accordance with the present invention;

FIG. 9 is a schematic view of the second embodiment of the neck hanging fan with the first and second magnetic members;

FIG. 10 is a schematic view of a second embodiment of a neck fan with a connecting assembly according to the present invention in partial cross-section;

FIG. 11 is a schematic structural diagram of a cross-flow fan assembly and a driving assembly according to an embodiment of the utility model;

fig. 12 is a partial structural diagram of a driving assembly of the neck hanging fan according to an embodiment of the present invention.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1, 2, 3 and 4 show an embodiment of a neck hanging fan of the present invention, comprising: the air supply part 102 is provided with an accommodating space, and the air supply part 102 is provided with an air inlet 1021 and an air outlet 1022; and the fan assembly is arranged in the air supply part 102 and is used for uniformly guiding air entering from the air inlet 1021 out through the air outlet 1022.

The fan assembly may be an axial flow fan assembly or a cross flow fan assembly, and preferably, the fan assembly is a cross flow fan assembly 20, the cross flow fan assembly 20 comprises an impeller 201, a volute 202 and a motor 203, and the cross flow fan assembly 20 can enable airflow to reach a long distance, simultaneously has no turbulence and uniform air outlet, and can enable a human body to feel uniform air blowing, and people can not feel fatigue or discomfort after long-time air blowing.

Preferably, the cross flow fan assembly 20 is vertically disposed, and the incoming air is blown out in parallel by the cross flow fan assembly 20, thereby enabling the wind to be uniformly blown out. And the air is blown out in parallel, and does not need to be guided by an air guide structure in the neck-hanging fan in the flowing process, so that the loss of the air quantity in the flowing process is avoided, and the generation of air noise is reduced.

The air outlet 1022 of the neck hanging fan is usually fixedly arranged and directionally blows towards the human body, and the position of the air outlet 1022 cannot be flexibly changed according to the requirement.

In order to solve the above problem, the wearing unit 101 is movably connected to the air blowing unit 102, and the air blowing unit 102 rotates with respect to the wearing unit 101.

A protruding snap ring 1012 may be provided on the wearing portion 101 or the air blowing portion 102, a snap groove 3011 adapted to the snap ring 1012 may be provided in a corresponding recess on the air blowing portion 102 or the wearing portion 101, and the air blowing portion 102 may be rotated with respect to the wearing portion 101 by the engagement of the snap ring 1012 and the snap groove 3011.

Preferably, as shown in fig. 2, 3 and 4, the wearing part 101 and the air supply part 102 are movably connected by the connection assembly 30, and the air supply part 102 is rotated with respect to the wearing part 101.

Preferably, the connecting assembly 30 includes a first connecting sub 301 and a second connecting sub 302, the first connecting sub 301 being disposed outside the second connecting sub 302. The first connection sub-member 301 is provided at the lower end of the wearing part 101, and the second connection sub-member 302 is provided at the upper end of the blowing part 102.

The first connecting sub-piece 301 and the second connecting sub-piece 302 are both hollow and cylindrical, the diameter of the first connecting sub-piece 301 is larger than that of the second connecting sub-piece 302, the lower part of the first connecting sub-piece 301 protrudes outwards, and a clamping groove 3011 is arranged in the middle of the outwards protruding position of the first connecting sub-piece 301.

Preferably, the lower end of the wearing portion 101 has a groove 1011 fitting with the first connecting sub-piece 301, a snap ring 1012 protrudes from the inner wall of the groove 1011, a snap groove 3011 fitting with the snap ring 1012 is disposed on the outer wall of the first connecting sub-piece 301, and the first connecting sub-piece 301 is connected with the wearing portion 101 through the snap ring 1012 and the snap groove 3011, so that the first connecting sub-piece 301 can rotate to a certain extent relative to the wearing portion 101.

The second connection sub-member 302 may be fixed to the upper end of the blowing part 102. Or may be formed integrally with the casing of the blower unit 102.

As shown in fig. 2, 5 and 6, the first connection sub 301 and the second connection sub 302 may be connected by a snap 3021. The upper end of the inner wall of the first connector sub-piece 301 is provided with a snap slot 3012, and the upper end of the second connector sub-piece 302 extends out of a snap 3021 along the radial direction. The fastener 3021 can be locked in the fastener slot 3012, and the first connector sub 301 is prevented from separating from the second connector sub 302 by the fastener 3021, so that only relative rotation can be performed.

Therefore, the movable connection between the wearing part 101 and the air supply part 102 through the connection assembly 30 enables the air supply part 102 to rotate relative to the wearing part 101, and the air outlet 1022 is arranged on the air supply part 102, so that the position of the air outlet 1022 changes along with the rotation of the air supply part 102, and the direction of the outlet air is changed. The air outlet requirements of different users are met.

Further, as shown in fig. 5, 6, 7 and 8, a gear assembly is provided at the connection of the first connecting sub 301 and the second connecting sub 302, and is used for defining the rotation position of the air supply part 102 relative to the wearing part 101.

Preferably, the gear position assembly comprises at least one gear position protrusion 3031 and a plurality of gear position recesses 3032, and the gear position protrusion 3031 is matched with the gear position recesses 3032.

As shown in fig. 5 and 6, the shift position protrusions 3031 are disposed on the outer wall of the second connection sub-member 302, and the shift position recesses 3032 are correspondingly disposed on the inner wall of the first connection sub-member 301. As shown in fig. 7 and 8, alternatively, the gear projections 3031 are disposed on the upper end of the second connection sub-member 302 and the gear recesses 3032 are correspondingly disposed on the lower end of the first connection sub-member 301. The gear notch 3032 can also be arranged on the outer wall of the second connecting sub-piece 302, and the gear protrusion 3031 is correspondingly arranged on the inner wall of the first connecting sub-piece 301; or the gear position recess 3032 is arranged at the upper end of the second connecting sub-member 302, and the gear position projection 3031 is correspondingly arranged at the lower end of the first connecting sub-member 301. When the blower part 102 rotates, the protrusion on the first coupling sub-member 301 slides from the first shift notch 3032 to the second shift notch 3032 according to the rotation position. Thereby defining the rotational position of the blowing part 102.

The air supply part 102 can be limited by the gear assembly, so that the direction of the outlet air is limited. One groove 1011 corresponds to one gear, each gear corresponds to one air outlet direction, and the change angle of the air outlet 1022 is 1-20 degrees, preferably 10 degrees when each gear is changed. When the air supply part 102 is rotated, the gear position protrusion 3031 on the air supply part 102 rotates along with the rotation, so that the first gear position protrusion 3031 rotates out of the first gear position groove 3032 and rotates into the other gear position groove 3032, and the gear position can be changed in different gear positions.

The gear protrusions 3031 and the gear recesses 3032 may have an arc-shaped cross section. This facilitates the shifting of the gear projection 3031 into different gear recesses 3032.

Preferably, the gear protrusions 3031 and the gear recesses 3032 are hemispherical. So as to be rotated and to define the rotational positions of the wearing part 101 and the blowing part 102 after being rotated.

Further, as shown in fig. 5, 6, 7 and 8, a limit component is arranged at the connection position of the first connecting sub-element 301 and the second connecting sub-element 302, and is used for limiting the rotation angle of the wearing part 101 relative to the air supply part 102.

Preferably, the position-limiting component includes a position-limiting protrusion 3041 and a position-limiting groove 3042, and the position-limiting protrusion 3041 is matched with the position-limiting groove 3042. The limiting protrusion 3041 can slide in the groove 1011, and the moving position of the limiting protrusion 3041 is limited by the limiting groove 3042, so as to limit the rotation angle of the air supplying part 102, and avoid the excessive rotation of the air supplying part 102.

Preferably, the limit protrusion 3041 may be disposed at the lower end of the first connecting sub-element 301, the limit groove 3042 is correspondingly disposed at the lower end of the second connecting sub-element 302, the limit protrusion 3041 can move in the limit groove 3042, and the rotation angle of the air supplying part 102 can be limited by the length of the limit groove 3042.

Preferably, the stopping protrusion 3041 has a cylindrical shape and the stopping groove 3042 has an arc shape.

The above-mentioned content is the scene of setting gear subassembly and spacing subassembly in coupling assembling 30 department, and when air supply part 102 and wearing portion 101 rotate to be connected and do not have coupling assembling 30, can the adaptability set gear subassembly and spacing subassembly in the junction of air supply part 102 and wearing portion 101, do not describe again.

The existing neck hanging fan is usually in an integrated structure, so that the inconvenience in maintaining the neck hanging fan is caused, and the integrated structure occupies more space and is inconvenient to store and transport when being stored.

In order to solve the above problem, the wearing unit 101 is detachably connected to the air blowing unit 102. The wearing part 101 and the blowing part 102 can be detached by the snap 3021 connection.

Preferably, as shown in fig. 3, 4, 9 and 10, the wearing unit 101 and the air blowing unit 102 are detachable by magnetic attraction. The lower part of the wearing part 101 is provided with a first magnetic piece 305, the upper part of the air supply part 102 is provided with a second magnetic piece 306, and the first magnetic piece 305 and the second magnetic piece 306 are detachably connected with the wearing part 101 and the air supply part 102 in an adsorption way.

Preferably, a mounting groove 3013 adapted to the first magnetic member 305 may be provided on the upper surface of the first connection sub-member 301, and the first magnetic member 305 may be disposed in the mounting groove 3013. The second magnetic member 306 may be disposed at a lower side of the top of the blowing part 102.

Preferably, the first magnetic member 305 and the second magnetic member 306 are both circular in shape.

The first magnetic member 305 and the second magnetic member 306 may be both magnetic magnets, or the first magnetic member 305 or the second magnetic member 306 may be magnets, and the corresponding second magnetic member 306 or the first magnetic member 305 may be a magnetically attractable metal such as iron or an iron alloy.

Adsorb detachable through first magnetism spare 305 and second magnetism spare 306 and be connected wearing portion 101 and air supply portion 102, make wearing portion 101 and the dismantlement that air supply portion 102 can be swift, be convenient for maintain the cross-flow fan subassembly 20 in the air supply portion 102, wearing portion 101 and air supply portion 102 can be placed respectively, reduce the occupation space of wearing portion 101 and air supply portion 102, be convenient for deposit and transport etc.. And the air supply part 102 can be detached and rotated relative to the wearing part 101 through the magnetic adsorption connection. That is, when the connection is performed by magnetic attraction, the rotation of the air supply unit 102 can be realized without using the engagement between the hook 3021 and the hook groove 3012.

Furthermore, as shown in fig. 2, 3, 4, 11 and 12, batteries 40 are disposed in each of the air supply parts 102, the batteries 40 are respectively connected to the driving assembly 80 and the cross-flow fan assembly 20, a control panel 50 is disposed in one air supply part 102, the control panel 50 is further connected to a synchronizing member 60, the synchronizing member 60 is mechanically or communicatively connected to the driving mechanism in the other air supply part 102 and the cross-flow fan assembly 20, and the synchronizing member 60 is used for synchronously starting or stopping the driving mechanisms in the two air supply parts 102 and/or the cross-flow fan assembly 20.

When the synchronizer 60 is mechanically connected to the cross flow fan assembly 20, the on-off button of the cross flow fan assembly 20 on the other side is touched by mechanical transmission to synchronously start or stop the cross flow fan assembly 20 on the other side. For example: synchronizing member 60 includes the control motor and installs in the flexible rope of control motor output, the end of flexible rope forms the arch on its radial direction, during control motor non-operating condition, the arch corresponds the setting with the switch that is used for controlling the cross-flow fan assembly 20 of opposite side, flexible rope rotation during control motor operating condition drives protruding and the contact of the switch of cross-flow fan assembly 20 of opposite side, and then starts the cross-flow fan assembly 20 of opposite side, flexible rope can be wire or other rectangular rope forms etc..

The synchronizer 60 is communicatively connected to the crossflow fan assembly 20, including wired communication connections, which may be connected using wires, and wireless communication connections. When the wireless communication connection is performed, a wireless module, such as a bluetooth module or an infrared module, may be used for the connection.

Preferably, the synchronization element 60 is a wired communication link.

As shown in fig. 2, when the wearing unit 101 and the air blowing unit 102 are integrally formed and are not detachable, the synchronizing member 60 includes a connection line 601, and in this case, one end of the connection line 601 is connected to the control board 50, and the other end of the connection line 601 is connected to the driving mechanism and the cross flow fan assembly 20 in the other air blowing unit 102. The control board 50 is connected to a switch button 501, and when the switch button 501 is pressed, the driving mechanisms in the two blowing units 102 and/or the cross flow fan assembly 20 are synchronously turned on or off.

As shown in fig. 3, 4 and 10, when the wearing part 101 is detachably connected to the blowing part 102, the synchronizing member 60 further includes a connecting piece 602, and the connecting piece 602 is disposed at an end of the blowing part 102 adjacent to the wearing part 101. One end of the blowing part 102 adjacent to the wearing part 101 is provided with a coupling groove 1023 to be fitted with the coupling piece 602. The coupling piece 602 is disposed within the coupling groove 1023.

Preferably, the connection piece 602 has a connection contact 603 protruding therefrom, one end of the connection contact 603 is inserted into the top of the air supply part 102, the top of the air supply part 102 is connected to the control board 50, the other end of the connection contact 603 is inserted into the first connection sub-member 301, and the first connection sub-member 301 is connected to one end of the connection line 601. The connection piece 602 in the other air supply part 102 is similarly arranged, so that the control board 50 can be connected with the connection line 601 through the connection contact 603, the wearing part 101 and the air supply part 102 can be conveniently detached, and the control board 50 can be quickly connected with the connection line 601. The drive mechanisms in the two blowing sections 102 and/or the cross flow fan assembly 20 are synchronously turned on or off.

It is also possible to provide the connection piece 602 at the end of the air blowing part 102 adjacent to the wearing part 101 and the connection contact 603 at the end of the wearing part 101 adjacent to the air blowing part 102. The connecting contact 603 protrudes from the wearing portion 101, a groove is formed in the connecting piece 602, and the connecting contact 603 can be inserted into the groove in the connecting piece 602. The connection contact 603 is brought into contact with the connection pad 602 to transmit a signal.

It is also possible to provide the connection piece 602 at the end of the wearing portion 101 adjacent to the air blowing portion 102 and the connection contact 603 at the end of the air blowing portion 102 adjacent to the wearing portion 101. The connecting contact 603 protrudes from the wearing portion 101, a groove is formed in the connecting piece 602, and the connecting contact 603 can be inserted into the groove in the connecting piece 602. The connection contact 603 is brought into contact with the connection pad 602 to transmit a signal.

The connection contact 603 may have a telescopic structure. For example, when the connection contacts 603 are disposed on the wearing portion 101, a receiving groove for receiving the connection contacts 603 may be disposed on the wearing portion 101, a spring plate or a spring may be disposed in the receiving groove, the connection contacts 603 are fixedly connected to the spring plate or the spring, the connection contacts 603 may slide in the receiving groove, and the spring plate or the spring presses the connection contacts 603 into the groove of the connection piece 602. The socket may further include a sleeve for receiving the connection contact 603, the sleeve may further include a spring plate or a spring, the connection contact 603 is disposed in the sleeve and fixedly connected to the spring plate or the spring, and the connection contact 603 may slide in the sleeve. Whereby the spring or spring can also press the connection contact 603 into the recess of the connection piece 602. The connection contact 603 is brought into contact with the connection pad 602 to transmit a signal.

Preferably, the connecting piece 602 is arc-shaped.

The connection 601 may be used for conducting electricity, and a battery 40 may be provided in only one of the air blowing parts 102 having the control board 50, and the battery 40 may not be provided in the other air blowing part 102, and electricity and a transmission synchronization signal may be simultaneously transmitted to the other air blowing part 102 through the connection 601, so that the driving mechanisms in the two air blowing parts 102 and/or the cross flow fan assembly 20 may be synchronously turned on or off.

Preferably, as shown in fig. 1, 4 and 11, a wind deflector 70 for guiding a wind direction is disposed at the wind outlet 1022.

The air guiding plate 70 includes a plurality of square plates, so that the air outlet 1022 is a plurality of strip-shaped holes arranged at intervals. The hanging screen fan can have a larger air outlet coverage area.

Preferably, the air deflector 70 is rotatably connected to the air supply part 102, a driving assembly 80 for driving the air deflector 70 to swing is further disposed in the air supply part 102, the driving assembly 80 includes a driving motor 801 and a gear set 802, and the gear set 802 is connected to the air deflector 70 to drive the air deflector 70 to swing.

The driving component 80 drives the air deflector 70 to swing, so that the air sweeping range can be enlarged, multi-directional air sweeping is performed, and the comfort level of the fan during use is improved.

Preferably, as shown in fig. 11 and 12, the gear set 802 includes a driving gear 8021 and a driven gear 8022, the driving gear 8021 is connected to the driving motor 801, the driving gear 8021 is engaged with the driven gear 8022, and the driven gear 8022 is connected to an eccentric 8023. The eccentric wheel 8023 drives the air deflector 70 to swing.

Preferably, a neck support 90 is provided at a lower portion of the blowing part 102.

Therefore, the cross-flow fan assembly can enable the air flow to reach a longer distance, meanwhile, turbulence is avoided, the air outlet is uniform, a human body can feel uniform air blowing, and fatigue or discomfort can not be felt by long-time air blowing. The air supply part can rotate relative to the wearing part through the movable connection between the wearing part and the air supply part, and the air outlet is arranged on the air supply part, so that the position of the air outlet changes along with the rotation of the air supply part, and the direction of air outlet is changed. The driving assembly drives the air guide plate to swing, so that the air sweeping range can be enlarged, multi-directional air sweeping is performed, and the comfort level of the fan during use is improved. Adsorb detachable through first magnetic member and second magnetic member and be connected wearing portion and air supply portion, make wearing portion and the dismantlement that air supply portion can be swift, be convenient for maintain the cross-flow fan assembly in the air supply portion, wear portion and air supply portion and can place respectively, reduce the occupation space who wears portion and air supply portion, be convenient for deposit and transport etc..

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims

1. A neck hanging fan is characterized by comprising:

the arc-shaped shell comprises a wearing part matched with the neck and air supply parts on two sides of the wearing part, the air supply parts are provided with accommodating spaces, and air inlets and air outlets are formed in the air supply parts;

and the fan component is arranged in the air supply part and used for leading out the air entering from the air inlet through the air outlet uniformly.

2. The neck hanging fan as claimed in claim 1, wherein the wearing part is movably connected to the air supply part, and the air supply part rotates relative to the wearing part.

3. The neck hanging fan as claimed in claim 2, wherein the wearing part and the air supply part are movably connected by a connecting assembly, so that the air supply part can rotate relative to the wearing part; the connecting assembly comprises a first connecting sub-assembly and a second connecting sub-assembly, and the first connecting sub-assembly is sleeved on the outer side of the second connecting sub-assembly and can rotate relatively; the first connecting sub-piece is arranged at the lower end of the wearing part, and the second connecting sub-piece is arranged at the upper end of the air supply part.

4. The neck fan of claim 3, wherein a shift assembly is disposed at a connection position of the first connecting sub-member and the second connecting sub-member, the shift assembly is used for limiting a rotation position of the air supply portion relative to the wearing portion, the shift assembly includes at least one shift protrusion and a plurality of shift grooves, and the shift protrusion is adapted to the shift grooves.

5. The hanging neck fan as claimed in claim 3, wherein a limiting component is arranged at the joint of the first connecting sub-piece and the second connecting sub-piece, the limiting component is used for limiting the rotation angle of the wearing part relative to the air supply part, the limiting component comprises a limiting protrusion and a limiting groove, and the limiting protrusion is matched with the limiting groove.

6. The muffler fan of claim 1, wherein the fan assembly is a cross flow fan assembly, the cross flow fan assembly including a volute, an impeller, and a motor for driving the impeller to rotate.

7. The neck hanging fan as claimed in claim 1, wherein the wearing part is detachably connected to the air supplying part.

8. The neck fan as claimed in claim 7, wherein a first magnetic member is disposed at a lower portion of the wearing portion, a second magnetic member is disposed at an upper portion of the air supply portion, and the first magnetic member and the second magnetic member are detachably attached to the wearing portion and the air supply portion.

9. The hanging neck fan as claimed in any one of claims 1 to 8, wherein a control panel is further provided in the air supply part, the control panel is connected with a synchronizing member, the synchronizing member is mechanically or communicatively connected with the fan assembly in the other air supply part, and the synchronizing member is used for synchronously starting or stopping the fan assemblies in the two air supply parts.

10. The neck hanging fan according to any one of claims 1-8, wherein an air deflector for guiding the wind direction is arranged at the air outlet; and a driving assembly for driving the air deflector to swing is further arranged in the air supply part, and the driving assembly drives the air deflector to swing.