Air discharging component and portable fan

Abstract

An air discharging component (100), comprising a housing (1), a fan (9), and a motor (8). The housing (1) comprises a first section (11) and a second section (12). The first section (11) is provided with an air outlet, and the second section (12) is provided with a plurality of air inlets (121). The fan (9) is arranged in the first section (11). The fan (9) comprises a hub (91) and a plurality of blades (92) arranged at intervals around the hub (91). The motor (8) is arranged in the first section (11). The motor (8) drives the fan (9) to rotate. An air intake cavity is formed between the fan (9) and an end portion of the second section (12) away from the first section (11).

Description

Air outlet component and portable fan TECHNICAL FIELD

[0001] The present application relates to the fan technical field, particularly relates to an air outlet component with large air inlet and a portable fan. BACKGROUND

[0002] At present, the size of daily electronic products is increasingly reduced, and the size and portability of the fan are also increasingly required. In the existing portable fan, the air duct space is limited, and the setting of the motor and the fan usually occupies a large internal space, and the air outlet effect is poor.

[0003] How to reasonably arrange each component in the portable fan with limited volume, optimize the air duct structure, and increase the air outlet volume is urgent to be solved. SUMMARY

[0004] The main purpose of the present application is to provide an air outlet component, which comprises a shell, a fan and a motor, the shell comprises a first section and a second section, the first section is provided with an air outlet, and the second section is provided with a plurality of air inlets; the fan is arranged in the first section, the fan comprises a hub and a plurality of blades arranged around the hub; the motor is arranged in the first section, and the motor drives the fan to rotate; wherein the fan and the end of the second section away from the first section form an air inlet cavity. The setting of the air inlet cavity increases the air inlet volume, enhances the wind power, and to a certain extent, buffers the impact of the air inlet, reduces the noise. BRIEF DESCRIPTION OF DRAWINGS

[0005] The embodiments of the present application will be described with reference to the accompanying drawings. The drawings of the present application are only used for describing the embodiments for the purpose of demonstration. Those skilled in the art can easily make other embodiments according to the steps described below without deviating from the principles of the present application.

[0006] Fig. 1-1 is a perspective view of a handheld fan according to an embodiment of the present application;

[0007] Fig. 1-2 is an exploded view of a handheld fan according to an embodiment of the present application;

[0008] Fig. 1-3 is a sectional view of a handheld fan according to an embodiment of the present application;

[0009] Fig. 1-4 is a sectional view of a driving assembly according to an embodiment of the present application;

[0010] Fig. 1-5 is another sectional view of a driving assembly according to an embodiment of the present application;

[0011] Fig. 1-6 is an exploded view of a driving assembly according to an embodiment of the present application;

[0012] Fig. 1-7 is an exploded view of a shell and a support frame according to an embodiment of the present application;

[0013] Fig. 1-8 is an assembled view of a housing, a support frame, a first connecting member and a handgrip of one embodiment of the present application;

[0014] Fig. 1-9 is a cross-sectional view of Fig. 1-8;

[0015] Fig. 1-10 is a cross-sectional view of a housing, a support frame, a first connecting member and a handgrip of another embodiment of the present application;

[0016] Fig. 1-11 is a perspective view of a rechargeable battery of one embodiment of the present application;

[0017] Fig. 1-12 is an exploded view of a rechargeable battery of one embodiment of the present application;

[0018] Fig. 1-13 is a cross-sectional view of a rechargeable battery of one embodiment of the present application;

[0019] Fig. 2-1 is a perspective view of a portable fan of the present application;

[0020] Fig. 2-2 is a perspective view of a portable fan of the present application with a mouthpiece and a first magnetic member removed;

[0021] Fig. 2-3 is a partially exploded view of a portable fan of the present application;

[0022] Fig. 2-4 is a cross-sectional view of a portable fan of the present application at one angle;

[0023] Fig. 2-5 is a cross-sectional view of a portable fan of the present application at another angle;

[0024] Fig. 2-6 is an exploded view of a portion of an air inlet assembly of a portable fan of the present application;

[0025] Fig. 2-7 is a perspective view of a flow guide of the present application;

[0026] Fig. 2-8 is a perspective view of a second sound absorbing assembly of the present application;

[0027] Fig. 2-9 is a cross-sectional view of a cylinder, a motor and a fan of the present application;

[0028] Fig. 2-10 is a perspective view of a switch assembly of the present application;

[0029] Fig. 2-11 is a perspective view of a portable fan of the present application with another mouthpiece. DETAILED DESCRIPTION

[0030] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be explained that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0031] The terms "first", "second", and the like in the present application are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0032] In the description of the present application, the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Scheme one

[0035] As shown in FIG. 1-1, a handheld fan of the present application includes an air outlet component 100 and a handheld part 200, and the air outlet component 100 is connected with the handheld part 200.

[0036] As shown in FIG. 1-1 to FIG. 1-3, in one embodiment, the handheld part 200 comprises a hand shell 10, and a rechargeable battery 20 and a control assembly 60 are arranged in the hand shell 10. The air outlet part 100 comprises a shell 1 and a driving assembly arranged in the shell 1, the driving assembly comprises a motor 8 and a fan 9, and the control assembly 60 controls the rechargeable battery 20 to supply power to the motor 8, and the motor 8 drives the fan 9 to rotate to generate wind.

[0037] As shown in FIG. 1-3, FIG. 1-4 and FIG. 1-6, in one embodiment, the driving assembly comprises a cylinder 7, a fan 9 and a motor 8. The cylinder 7 comprises an outer ring part 71, an inner ring part 72, and a plurality of connecting leaves 73 connecting the outer ring part 71 and the inner ring part 72. The fan 9 is accommodated in the outer ring part 71 and arranged at the back side of the inner ring part 72. The motor 8 comprises a stator assembly 81 and a rotor assembly 82, the outer diameter of the motor 8 is smaller than the inner diameter of the inner ring part 72, and the motor 8 is installed on the inner side of the inner ring part 72. Among them, the rear end of the fan 9 exceeds the rear end of the outer ring part 71, which is beneficial to the fan 9 to suck and cut the airflow at the back side of the cylinder 7, thereby forming stronger wind. In this embodiment, the outer side of the cylinder 7 is also wrapped with a buffer sleeve (not numbered, same below), of course, in other embodiments, the buffer sleeve can also not be arranged.

[0038] As shown in FIG. 1-3, FIG. 1-4 and FIG. 1-6, in one embodiment, the fan 9 comprises a hub 91 and a plurality of blades 92 arranged around the hub 91. The outer diameter of the motor 8 is smaller than the maximum inner diameter of the hub 91, so part of the motor 8 can also be accommodated on the inner side of the hub 91. In this embodiment, the hub 91 increases radially from back to front, the inner ring part 72 is radially constant from back to front, the maximum diameter of the hub 91 is equal to the diameter of the inner ring part 72, and the wind generated by the rotation of the fan 9 can smoothly flow to the outer side of the inner ring part 72, reducing wind resistance and wind loss. Of course, in other embodiments, the maximum diameter of the hub 91 and the diameter of the inner ring part 72 differ by less than 2mm, which can also achieve the effect of reducing wind resistance and wind loss.

[0039] As shown in FIG. 1-3 to FIG. 1-6, in one embodiment, the front edge of each of the blades 92 is provided with a plurality of first serrations 921, and the rear edge of each of the connecting blades 73 is provided with a plurality of second serrations 731. The ratio of the width of the first serration 921 to the length of the front edge of the blade 92 ranges from 0.05 to 0.2, the ratio of the interval between two adjacent first serrations 921 to the width of the first serration 921 ranges from 0 to 1, and the ratio of the depth of the first serration 921 to the width of the first serration 921 ranges from 0.5 to 2. The ratio of the width of the second serration 731 to the length of the rear edge of the connecting blade 73 ranges from 0.05 to 0.2, the ratio of the interval between two adjacent second serrations 731 to the width of the second serration 731 ranges from 0 to 1, and the ratio of the depth of the second serration 731 to the width of the second serration 731 ranges from 0.5 to 2. In this embodiment, there is an interval between two adjacent first serrations 921 and an interval between two adjacent second serrations 731. In other embodiments, there can be no interval between two adjacent first serrations 921 or between two adjacent second serrations 731. In this embodiment, the first serration 921 and the second serration 731 are approximately triangular in shape. In other embodiments, the first serration 921 and the second serration 731 can be trapezoidal, circular, circular-arc, or the like. In this embodiment, the front edge of the blade 92 and the rear edge of the connecting blade 73 are provided with serrations. In other embodiments, the rear edge of the blade 92 can also be provided with serrations, and the front edge of the connecting blade 73 can also be provided with serrations. In this embodiment, the first serration 921 is provided on the entire front edge of the blade 92, and the second serration 731 is provided on the entire rear edge of the connecting blade 73. In other embodiments, the first serration 921 can be provided only on part of the front edge of the blade 92, and the second serration 731 can be provided only on part of the rear edge of the connecting blade 73.

[0040] The plurality of first serrations 921 and the plurality of second serrations 731 can effectively eliminate pressure concentration in the airflow, thereby making the internal pressure of the airflow more uniform, reducing turbulence, improving wind efficiency, and reducing the noise of the airflow.

[0041] As shown in FIG. 1-3 to FIG. 1-5, in one embodiment, the blade 92 rotates clockwise from back to front, and the connecting blade 73 rotates counterclockwise from back to front and then extends straight forward. The adjacent areas of the blade 92 and the connecting blade 73 extend in opposite directions. The counterclockwise rotating part of the connecting blade 73 can comb and straighten the airflow generated by the rotation of the blade 92, reducing turbulence and noise.

[0042] As shown in FIG. 1-3 to FIG. 1-6, in one embodiment, the inner ring part 72 is provided with a mounting part 721. The motor 8 further comprises a bearing seat 83, which is mounted on the mounting part 721. In this embodiment, the bearing seat 83 is made of metal, and the mounting part 721 is made of plastic. The bearing seat 83 is mounted on the mounting part 721 by one or more of the following methods: in-mold injection, ultrasonic welding, hot melting, glue, tight fit and pressure insertion. In other embodiments, the bearing seat 83 can also be made of plastic, and the bearing seat 83 is mounted on the mounting part 721, or the bearing seat 83 and the mounting part 721 are integrally formed by injection molding.

[0043] As shown in FIG. 1-3 to FIG. 1-6, in one embodiment, the rotor assembly 82 comprises a rotating shaft 821, a bearing assembly 822, a magnetic ring 823 and a yoke 824. The bearing assembly 822 is arranged in the bearing seat 83, and one end of the rotating shaft 821 is fixed in the bearing seat 83 through the bearing assembly 822. The magnetic ring 823 is fixed to the radially inner side of the yoke 824, the yoke 824 is fixedly connected to the rotating shaft 821, and the yoke 824 and the magnetic ring 823 are arranged on the radially outer side of the bearing seat 83. The stator assembly 81 is arranged between the bearing seat 83 and the magnetic ring 823, and the other end of the rotating shaft 821 is fixedly connected to the fan 9. That is, the magnetic ring 823 is arranged on the radially outer side of the stator assembly 81, and the motor 8 is an external rotor motor 8. Moreover, the magnetic ring 823 is fixed to the radially inner side of the yoke 824, and the yoke 824 is fixedly connected to the rotating shaft 821. Therefore, when the stator assembly 81 drives the magnetic ring 823 to rotate, the magnetic ring 823 drives the yoke 824, and the yoke 824 drives the rotating shaft 821 to rotate. Therefore, the magnetic ring 823 or the yoke 824 does not need to be connected to the fan 9. The fan 9 is fixedly connected to the other end of the rotating shaft 821, and the rotating shaft 821 drives the fan 9 to rotate.

[0044] As shown in FIG. 1-4 and FIG. 1-6, in one embodiment, the yoke 824 comprises an outer side wall 8241, an inner side wall 8242 and a connecting wall 8243, and the connecting wall 8243 connects the outer side wall 8241 and the inner side wall 8242. The inner side wall 8242 is arranged on the inner side of the outer side wall 8241, and the inner side wall 8242 is fixedly connected to the rotating shaft 821. The inner side wall 8242 is shorter than the outer side wall 8241, so that the bearing assembly 822 can be arranged on the part of the rotating shaft 821 in front of the inner side wall 8242. In this embodiment, the connecting wall 8243 penetrates a plurality of through holes 8244, so that the internal part of the motor 8 can be cooled. In other embodiments, the connecting wall 8243 can not be provided with the through holes 8244.

[0045] As shown in FIG. 1-3 and FIG. 1-4, in one embodiment, the bearing assembly 822 includes a first bearing 8221 located at the front, a second bearing 8222 located at the back, and a buffer 8223 arranged between the first bearing 8221 and the second bearing 8222. The front end of the inner side wall 8242 directly abuts the second bearing 8222, or an elastic member (not numbered, same below) is arranged between the front end of the inner side wall 8242 and the second bearing 8222. The buffer 8223 can be a single spring, or can be composed of a spring and a rubber sleeve, or other elastic materials. The elastic member can be a spring, or other elastic materials.

[0046] As shown in FIG. 1-3, FIG. 1-4 and FIG. 1-6, in one embodiment, the motor 8 is a three-phase high-speed motor, and the motor 8 further includes a driving board 84. The inner ring part 72 is internally provided with a fixing hole 722, the driving board 84 is provided with a fixing port 841, and the fixing member 44 passes through the fixing port 841 and is fixed to the fixing hole 722, so as to fix the driving board 84 to the inner ring part 72.

[0047] As shown in FIG. 1-1 to FIG. 1-3, in one embodiment, the housing 1 includes a first section 11 and a second section 12 connected to each other, and the second section 12 is located at the back of the first section 11. The driving assembly is arranged in the first section 11, that is, the cylinder 7, the motor 8 and the fan 9 are arranged in the first section 11. Among them, the side surface of the second section 12 is annularly provided with a plurality of air inlets 121, and the first section 11 is air outlet. It should be understood that in the present embodiment, a plurality of air inlets 121 are only arranged on the side surface of the second section 12, but in other embodiments, a plurality of air inlets 121 can also be arranged on the side surface and the back of the second section 12. In the present embodiment, the radially inner side of a plurality of air inlets 121 is further provided with a filtering device 34, so that the blown air is cleaner. Of course, in other embodiments, the radially inner side of a plurality of air inlets 121 can also not be provided with the filtering device 34.

[0048] As shown in FIG. 1-1 to FIG. 1-3, in one embodiment, the length of the first section 11 is greater than the length of the second section 12. In other embodiments, the length of the first section 11 can also be equal to the length of the second section 12. Each of a plurality of air inlets 121 is a circular hole, and the diameter of each air inlet 121 is 0.8-2mm. In other embodiments, each of a plurality of air inlets 121 can also be a regular polygonal hole, or part of a plurality of air inlets 121 is a circular hole, and part of a plurality of air inlets 121 is a regular polygonal hole.

[0049] As shown in FIG. 1-2, FIG. 1-3 and FIG. 1-7, in one embodiment, the air outlet component 100 further comprises a support frame 2, which is received in the housing 1. The support frame 2 comprises a first support portion 21 and a second support portion 22 connected in front and back, the first support portion 21 is received in the first section 11, the second support portion 22 is received in the second section 12, and the driving assembly is received in the first support portion 21.

[0050] As shown in FIG. 1-2, FIG. 1-3 and FIG. 1-7, in one embodiment, the first support portion 21 is provided with a plurality of first matching portions 211 and a plurality of first guide portions 212 on the outside, and the housing 1 is correspondingly provided with a plurality of second matching portions 111 and a plurality of second guide portions 112 on the inside. The plurality of first guide portions 212 and the plurality of second guide portions 112 are matched and guided to slide the support frame 2 into the housing 1. The plurality of first matching portions 211 and the plurality of second matching portions 111 are correspondingly matched to fix the support frame 2 in the housing 1. In this embodiment, the plurality of first guide portions 212 are sliding grooves, and the plurality of second guide portions 112 are sliding blocks. In other embodiments, the plurality of first guide portions 212 can be sliding blocks, and the plurality of second guide portions 112 can be sliding grooves. The plurality of first guide portions 212 and the plurality of second guide portions 112 are not only in a guiding relationship, but also in a positioning relationship. In this embodiment, the plurality of first matching portions 211 are hooks, and the plurality of second matching portions 111 are slots. In other embodiments, the plurality of first matching portions 211 can be slots, and the plurality of second matching portions 111 can be hooks. The plurality of first matching portions 211 and the plurality of second matching portions 111 are matched and fixed, and at the same time limit the relative position between the support frame 2 and the housing 1.

[0051] As shown in FIG. 1-2, FIG. 1-3 and FIG. 1-7, in one embodiment, the air outlet component 100 further comprises a fixing frame 3, a functional component 4 and a fixing ring 5. The second support part 22 has a smaller diameter than the first support part 21, and comprises a connecting part 221 connected to the first support part 21, a plate part 222 at the back side, and a plurality of first columns 223 connecting the connecting part 221 and the plate part 222. The fixing frame 3 is arranged at the radial outer side of the second support part 22 and at the inner side of the housing 1, and comprises a first ring 31, a second ring 32, and a plurality of second columns 33 connecting the first ring 31 and the second ring 32. The first ring 31 is arranged at the outer side of the connecting part 221, and the plurality of second columns 33 are arranged at the outer side of the plurality of first columns 223. The functional component 4 is mounted at the back side of the plate part 222, and the second ring 32 is arranged at the outer side of the functional component 4. The fixing ring 5 comprises a first side wall 51 and a second side wall 52 arranged concentrically, and a third side wall 53 connecting the first side wall 51 and the second side wall 52. The fixing ring 5 is mounted from back to front at the back side of the housing 1, the first side wall 51 is in abutment with the housing 1, the second side wall 52 is in abutment with the functional component 4, and the first side wall 51, the second side wall 52 and the third side wall 53 are arranged around the second ring 32. On the basis of the support frame 2 being fixed to the housing 1, the fixing frame 3, the functional component 4 and the fixing ring 5 are fixed to the housing 1 and the support frame 2.

[0052] As shown in FIG. 1-2 and FIG. 1-3, in one embodiment, the functional component 4 is a lamp. The functional component 4 comprises a light source assembly and a fixing member 44, and the fixing member 44 is fixed to the plate part 222 through the light source assembly to fix the functional component 4 to the plate part 222. The light source assembly comprises a circuit board 41, an LED light emitting member 42 arranged on the circuit board 41, and a light-transmitting member 43 arranged at the outer side of the circuit board 41 and the LED light emitting member 42. The circuit board 41 is connected to the control assembly 60, and the control assembly 60 can control the switching of the LED light emitting member 42. Of course, in other embodiments, the functional component 4 can also be other components, such as an IP component, a humidifier, a heater, a semiconductor refrigerator, etc., without being limited by way of example.

[0053] As shown in FIG. 1-2, FIG. 1-7, FIG. 1-8 and FIG. 1-9, in one embodiment, the air outlet component 100 further comprises a first connecting member 6. The housing 1 comprises a first opening 13 arranged on the first section 11 and the second section 12, and the support frame 2 comprises a second opening 23 arranged on the first support part 21 and the second support part 22, the second opening 23 at least partially overlaps the first opening 13. The first connecting member 6 passes through the second opening 23 and the first opening 13 from the inside of the support frame 2 to the outside of the housing 1. The handheld component 200 further comprises a second connecting member 70, which is connected to the upper side of the hand housing 10, at least part of the second connecting member 70 is exposed upward and is fixedly connected with the first connecting member 6.

[0054] As shown in FIG. 1-10 and FIG. 1-13, in one embodiment, the first connecting member 6 is integrally formed with the support frame 2, the housing 1 comprises the first opening 13 arranged on the first section 11 and the second section 12, and part of the first connecting member 6 is exposed downward through the first opening 13. The second connecting member 70 is integrally formed with the hand housing 10. The bottom of the hand housing 10 is provided with a first ventilation port 1021, and the second connecting member 70 is provided with a second ventilation port 701. When the fan 9 rotates, the main air flow path is from the plurality of air inlets 121 into the air outlet component 100, and finally blows out from the front end of the housing 1; the auxiliary air flow path is from the first ventilation port 1021 into the hand housing 10, and then enters the air outlet component 100 through the second ventilation port 701 and the first opening 13, and finally blows out from the front end of the housing 1. By arranging the first ventilation port 1021 on the bottom of the hand housing 10, the second ventilation port 701 on the second connecting member 70, and the first opening 13 on the support frame 2 to connect the hand housing 10 and the air outlet component 100, not only the air inlet area is widened and the air inlet amount is increased, but also the heat generated by the rechargeable battery 20 and the control assembly 60 can be taken away.

[0055] As shown in FIG. 1-11 to FIG. 1-13, in one embodiment, the rechargeable battery 20 comprises a holding frame 30, a battery pack 40 and a controller 50. The holding frame 30 comprises an upper side frame 301 and a lower side frame 302, and the upper side frame 301 and the lower side frame 302 correspondingly and fixedly form a containing cavity 303. The battery pack 40 comprises at least two battery cells 401, the battery pack 40 is fixed in the containing cavity 303, and the plurality of battery cells 401 in the battery pack 40 are electrically connected. The positive and negative poles of the control board 501 are respectively electrically connected with the positive and negative poles of the battery pack 40.

[0056] As shown in FIGS. 1-11 to 1-13, in one embodiment, the battery pack 40 includes three of the battery cells 401. The three of the battery cells 401 are arranged in an isosceles triangle, of course, in other embodiments, the three of the battery cells 401 can also be arranged side by side. The battery cells 401 are of the model 18650 or 21700. In the present embodiment, the three of the battery cells 401 are connected in series, and the working voltage after series connection is 11.1-12.6V, and the three of the battery cells 401 are directly powered to the motor 8 in series. In other embodiments, the three of the battery cells 401 can also be connected in parallel, and the working voltage after parallel connection is 3.7-4.2V. After the three of the battery cells 401 are arranged in parallel, the working voltage is increased to 11.1-12.6V through a boost circuit, and then the motor 8 is powered after boosting. It should be understood that these voltage values are rated values, i.e. standard values, but in actual use, they will fluctuate due to constant voltage or constant current problems.

[0057] As shown in FIGS. 1-11 to 1-13, in one embodiment, the upper side frame 301 includes a top wall 3011, and a plurality of first tabs 3013 extending downward from the top wall 3011, and the plurality of first tabs 3013 form a plurality of first compartments 3016. The lower side frame 302 includes a bottom wall 3021, and a plurality of second tabs 3023 extending upward from the bottom wall 3021, and the plurality of second tabs 3023 form a plurality of second compartments 3026. The plurality of first compartments 3016 and the plurality of second compartments 3026 together constitute a plurality of the containing compartments 303, and the plurality of first compartments 3016 receive a part of the plurality of the battery cells 401, and the plurality of second compartments 3026 receive another part of the plurality of the battery cells 401. The plurality of first tabs 3013 is provided with a plurality of first fixing portions 3015, and the plurality of second tabs 3023 is provided with a plurality of second fixing portions 3025, and the upper side frame 301 and the lower side frame 302 are correspondingly combined, and the plurality of first fixing portions 3015 and the plurality of second fixing portions 3025 are correspondingly fixed, so as to fix and receive the plurality of the battery cells 401 in the plurality of the containing compartments 303.

[0058] As shown in FIGS. 1-11 to 1-13, in one embodiment, the positive electrode of each of the battery cells 401 faces the same direction as the negative electrode of the adjacent battery cell 401, and the positive and negative electrodes of the adjacent two battery cells 401 are connected in series through the conductive member 402. Alternatively, in other embodiments, the positive electrodes of a plurality of the battery cells 401 face the same direction, and the positive electrodes of the adjacent two battery cells 401 are connected in parallel through the conductive member 402, and the negative electrodes of the adjacent two battery cells 401 are connected in parallel through the conductive member 402. The top wall 3011 is provided with a plurality of first grooves 3012, and the bottom wall 3021 is provided with a plurality of second grooves 3022, and a plurality of the conductive members 402 are arranged in the plurality of first grooves 3012 and the plurality of second grooves 3022.

[0059] As shown in FIGS. 1-11 to 1-13, in one embodiment, the controller 50 is arranged above the top wall 3011. The positive electrode of the battery pack 40 is electrically connected to the positive electrode of the control board 501 through the positive electrode connecting piece 403, and the negative electrode of the battery pack 40 is electrically connected to the negative electrode connecting piece 404 of the control board 501. The first connecting piece 3013 is provided with a plurality of third grooves 3014, and the second connecting piece 3023 is provided with a plurality of fourth grooves 3024, and the plurality of third grooves 3014 and the plurality of fourth grooves 3024 are in one-to-one correspondence. The positive electrode connecting piece 403 or the negative electrode connecting piece 404 is electrically connected to the negative electrode or the positive electrode of the control board 501 from one of the second grooves 3022, through one of the fourth grooves 3024 and one of the third grooves 3014. It should be understood that the plurality of first connecting pieces 3013 and the plurality of second connecting pieces 3023 are substantially arc-shaped, thereby fixing and limiting the plurality of battery cells 401. The remaining third grooves 3014 and the remaining fourth grooves 3024 can be used for ventilation and heat dissipation inside the battery pack 40.

[0060] As shown in FIGS. 1-1, 1-11 to 1-13, in one embodiment, the length of the hand-held portion 200 is 52-62 mm, the width of the hand-held portion 200 is 25.5-35.5 mm, and the height of the hand-held portion 200 is 96.6-106.6 mm. The part of each of the battery cells 401 is arranged tangentially to the hand-held portion 200. The volume of the hand-held portion 200 is relatively small as a whole, and the hand-held portion 200 is convenient for the user to hold.

[0061] As shown in FIGS. 1-11 to 1-13, in one embodiment, the hand-held portion 200 includes a side cover 101 and a bottom cover 102, that is, the hand shell 10 includes a side cover 101 and a bottom cover 102. The bottom cover 102 is detachably connected to the side cover 101, and the bottom cover 102 is provided with the first ventilation opening 1021.

[0062] Scheme two

[0063] As shown in FIG. 2-1 to FIG. 2-4, the portable fan of the present application is shown. In the present embodiment, the portable fan is a handheld fan, which comprises an air outlet component 100 and a handheld component 200 connected together. The air outlet component 100 comprises a housing 1, a cylinder 2, a motor 3 and a fan 4. The housing 1 has an air inlet at the back and an air outlet at the front, and the cylinder 2 is fixed in the housing 1. The motor 3 is fixed to the cylinder 2, and the fan 4 is fixed to the cylinder 2 and the motor 3, and at least partially accommodated in the cylinder 2.

[0064] As shown in FIG. 2-1 to FIG. 2-4, in one embodiment, the air outlet component 100 further comprises a nozzle 5. The nozzle 5 is fixed to the front end of the housing 1, and the front end of the housing 1 is provided with a first magnetic attraction member 11, and the nozzle 5 is provided with a second magnetic attraction member 51 corresponding to the first magnetic attraction member 11, and the housing 1 and the nozzle 5 are magnetically attracted and fixed by the first magnetic attraction member 11 and the second magnetic attraction member 51. The housing 1 cooperates with the nozzle 5, so that different blowing functions can be achieved by using different specifications of the nozzle 5.

[0065] Compared with the existing buckle fixing or screw fixing connection mode, the magnetic attraction connection mode only needs to align the nozzle 5 with the air outlet 13 of the housing 1, and the two can be automatically attracted and fixed, without the complex screwing or buckling operation of the traditional buckle type nozzle 5, and the installation can be completed in a few seconds. When disassembling, the nozzle 5 can be removed by gently pulling, which facilitates users to quickly replace the nozzle 5 according to different modeling needs. In addition, the nozzle 5 fixed by magnetic attraction is more firmly connected with the housing 1 due to the magnetic attraction effect, and is not easy to fall off during use. Even when the air outlet component 100 is waved or moved quickly, the nozzle 5 can remain stable, avoiding the situation that the traditional nozzle 5 is worn, loose or even falls off due to frequent replacement or long use time, thereby improving the safety of use and reducing the adverse effects on equipment or other effects caused by the falling of the nozzle 5. The magnetic component also has strong anti-magnetic force decay ability, which ensures that the nozzle 5 can still maintain good attraction effect after being installed and disassembled for many times, thereby prolonging the service life of the nozzle 5. In addition, a series of different nozzles 5 can be provided, so as to realize different functions according to actual needs, for example, the nozzle 5 for blowing dust, the nozzle 5 for modeling design, without limitation by way of example. In addition, due to the detachable design of the magnetic nozzle 5, it is convenient for users to clean it individually, which helps to maintain the cleanliness and good performance of the air outlet component 100.

[0066] As shown in FIG. 2-3, FIG. 2-4, FIG. 2-5 and FIG. 2-7, in one embodiment, the portable fan comprises a flow guide 6, which comprises an inner wall 62 and an outer wall 61. A plurality of connecting walls 63 connects the inner wall 62 and the outer wall 61, and the outer wall 61 is fixed to the front end of the outer shell 1. The outer side of the outer wall 61 is formed with a fixing portion 64, and the first magnetic member 11 is fixed to the fixing portion 64. In this embodiment, the first magnetic member 11 is fixed to the fixing portion 64 by screwing, and in other embodiments, other fixing methods can also be used. The fixing portion 64 and the radially inner side of the front end of the outer shell 1 together form a groove 65, and the first magnetic member 11 is accommodated in the groove 65. By forming the groove 65, the first magnetic member 11 can also be limited between the outer shell 1 and the flow guide 6, the axial movement of the first magnetic member 11 is limited by the fixing portion 64, and the radial movement of the first magnetic member 11 is limited by the groove 65 wall, thereby achieving stable fixation of the first magnetic member 11.

[0067] As shown in FIG. 2-3, FIG. 2-5 and FIG. 2-7, in one embodiment, at least one of the first magnetic member 11 and the second magnetic member 51 is annular, and at least one of the first magnetic member 11 and the second magnetic member 51 is a magnet. The annular magnet can generate a very uniform magnetic field, and the magnetic field strength is consistent throughout the exposed annular magnet surface. And the magnetic flux path of the annular magnet is closed, the magnetic field is closed, and the magnetic flux almost does not leak out of the magnet, thereby improving the utilization rate of the magnetic field, enhancing the magnetic attraction force, and also reducing the magnetic interference to the surrounding environment. In this embodiment, the material of the first magnetic member 11 is iron, and the material of the second magnetic member 51 is a magnet. In other embodiments, the material of the first magnetic member 11 can be a magnet, and the material of the second magnetic member 51 can be iron; or the material of the first magnetic member 11 and the second magnetic member 51 can both be a magnet.

[0068] Generally speaking, under the same conditions, the attraction of the magnet to the iron is smaller than the attraction of the magnet to the magnet, because the iron is not a permanent magnet, and the magnetic domains inside the iron will partially or completely align with the magnetic field of the magnet under the action of the magnetic field of the magnet, thereby generating an attractive force, but this attractive force is not as large as the attractive force generated by the alignment of the opposite poles of the magnet to the magnet. However, when the magnet attracts the iron, the attraction is relatively stable and does not fluctuate greatly due to the alignment of the magnetic poles as when the magnet attracts the magnet. As long as the ferrous object is within the magnetic field range of the magnet, the magnet will generate a certain attractive force, and this attractive force changes relatively smoothly within a certain distance range. When the magnetic poles of the magnet are not completely aligned, the attractive force will be greatly reduced when the magnet attracts the magnet. However, when the opposite poles of the two magnets are close to each other and completely aligned, the attractive force between them is very strong. In this case, the magnetic domains inside the magnet are aligned in the same direction, which can generate the maximum magnetic flux, thereby generating a strong attractive force.

[0069] In the present embodiment, at least one of the first magnetic attraction member 11 and the second magnetic attraction member 51 is a magnet, wherein the material of the magnet is neodymium iron boron strong magnet. Neodymium iron boron (Nd-Fe-B) permanent magnet material is currently the highest magnetic permanent magnet material, the main raw materials include rare earth metal neodymium, metal element iron, non-metallic element boron, and a small amount of dysprosium, niobium, copper and other elements. Further, the material of the magnet is N52 neodymium iron boron strong magnet, which is a high-performance rare earth magnet with a maximum magnetic energy product of 52 MGOe (Mega Gauss-Oersted). This means that it can generate a very strong magnetic force; and it is light in weight but strong in magnetic force, which can meet the design requirements of miniaturization and light weight. In addition, N52 neodymium iron boron strong magnet also has high residual magnetism, high coercive force, working temperature range up to 80-100 degrees Celsius, corrosion resistance and other excellent properties, so it has a wide range of applications in many fields. It is one of the strongest magnets on the market. Of course, in other embodiments, the material of the magnet can also be other neodymium iron boron strong magnets or other magnetic materials.

[0070] As shown in FIG. 2-2, FIG. 2-4, FIG. 2-5 and FIG. 2-7, in one embodiment, the first magnetic attraction element 11 protrudes forward from the outer wall 61 and the outer shell 1, and the second magnetic attraction element 51 is fixed to the rear side of the nozzle 5, and the inner diameter of the rear end of the nozzle 5 matches the outer diameter of the first magnetic attraction element 11. Since the first magnetic attraction element 11 protrudes forward from the front end of the outer wall 61 and the front end of the outer shell 1, the first magnetic attraction element 11 can normally magnetically attract the second magnetic attraction element 51. The inner diameter of the rear end of the nozzle 5 matches the outer diameter of the first magnetic attraction element 11, so the rear end of the nozzle 5 can cover part or all of the outer side of the first magnetic attraction element 11, making it more aesthetically pleasing. It should be understood that the first magnetic attraction element 11 and the second magnetic attraction element 51 can directly contact and magnetically attract each other, or can be spaced apart by a plastic shell wall or other element to indirectly magnetically attract each other, as long as it does not affect the magnetic attraction connection between the first magnetic attraction element 11 and the second magnetic attraction element 51.

[0071] As shown in FIG. 2-1, FIG. 2-3 and FIG. 2-4, the nozzle 5 includes a first nozzle 5a, which is radially reduced from rear to front, and the front end of the first nozzle 5a is oval-shaped, and a bristle 52 is fixed to the front end of the first nozzle 5a, and the bristle 52 is arranged side by side with the blowing port of the first nozzle 5a. The first nozzle 5a has a dust blowing function, and the bristle 52 can further remove dust. Of course, the bristle 52 can also be directly arranged at the blowing port of the first nozzle 5a, and the wind blows out from the gap between the bristles 52. The axial length of the first nozzle 5a is 31-35.9mm, and the axial length of the first nozzle 5a is relatively short, which reduces wind loss and improves blowing efficiency.

[0072] As shown in FIG. 2-11, the nozzle 5 includes a second nozzle 5b, which is radially reduced from rear to front, and the inner diameter of the rear end of the second nozzle 5b is 23-40mm, and the front end of the second nozzle 5b is circular-shaped, and the inner diameter of the front end of the second nozzle 5b is 14-18mm, so it can be seen that the second nozzle 5b has a strong wind gathering function. Moreover, the axial length of the second nozzle 5b is 60-64.7mm, and the axial length of the second nozzle 5b is relatively long, and the wind pressure and blowing distance are further improved.

[0073] As shown in FIG. 2-2, FIG. 2-4 and FIG. 2-5, in one embodiment, the housing 1 is formed with an air inlet cavity 14 at the rear end of the fan 4, and an air inlet assembly is detachably mounted to the air inlet cavity 14 from the rear. The air inlet assembly is detachably mounted from the rear, so as to facilitate user cleaning and maintenance, and the user can remove the air inlet assembly for certain personalized customization operation. The detachable air inlet assembly can also be better fixed in design, reducing the risk of loosening and falling off due to vibration and other reasons during use. The air inlet assembly includes a first sound absorption assembly 7 and a rear cover assembly 9. The first sound absorption assembly 7 includes a first support part 71 and a filter device 72. The first sound absorption assembly 7 is arranged at the rear inner side of the housing 1, and the filter device 72 is arranged between the first support part 71 and the housing 1 in the radial direction. The first support part 71 and the housing 1 are hard elements, which can better play a supporting and shaping role. Therefore, the filter device 72 is arranged between the first support part 71 and the housing 1, which is more secure and stable.

[0074] In this embodiment, the material of the filter device 72 is metal material. Metal material has good sound insulation and sound absorption performance, which can effectively reduce the propagation and reflection of sound. In other embodiments, the material of the filter device 72 can be organic fiber material, inorganic fiber material, cotton, foamed plastic, sponge, perforated plate, leather, rubber, plastic, etc.

[0075] As shown in FIG. 2-2, FIG. 2-4, FIG. 2-5 and FIG. 2-6, in one embodiment, a plurality of first sound-damping holes 711 are formed through the first supporting part 71, a plurality of first micropores (not shown, same below) are formed on the filtering device 72, and a plurality of side air inlets 121 are formed through the shell 1 corresponding to the first supporting part 71. The first supporting part 71, the filtering device 72 and the shell 1 corresponding to the first supporting part 71 are all provided with through holes. However, the first sound-damping holes 711 and the first micropores are arranged in a staggered manner, the first micropores and the side air inlets 121 are arranged in a staggered manner, and the first sound-damping holes 711 and the side air inlets 121 are arranged in a staggered manner. It should be understood that the staggered arrangement not only refers to the misalignment of positions, but also refers to the staggered arrangement caused by the different sizes of the apertures of the first sound-damping holes 711, the first micropores and the side air inlets 121. The first sound-damping holes 711, the first micropores and the side air inlets 121 are all arranged in a staggered manner, which can effectively prevent dust, impurities, hair and the like from entering the air inlet cavity 14. In addition, when the portable fan is started, air flows at a high speed, and the staggered arrangement of the air inlet structure can avoid the strong impact of high-speed fluid, increase the stability of the structure, guide the high-speed fluid to tilt in, increase the total area of the air inlet in a limited space, and further improve the air suction amount; the staggered arrangement also helps to make the entering air more evenly distributed in the air inlet cavity 14, avoid the occurrence of local airflow that is too strong or too weak, achieve more accurate airflow control, reduce turbulence, reduce energy loss, and make the air flow more stable.

[0076] As shown in FIG. 2-2, FIG. 2-4, FIG. 2-5 and FIG. 2-6, in one embodiment, the rear side of the first supporting part 71 is provided with a mounting part 712, and the rear cover assembly 9 is mounted on the mounting part 712. The rear cover assembly 9 includes a rear frame 91, the rear frame 91 and the first supporting part 71 sandwiching the air inlet net 15, the rear frame 91 corresponding to the air inlet net 15 is provided with a rear air inlet 122, and the air inlet net 15 is provided with a plurality of second micropores (not shown, same below), and the aperture of the second micropore is 0.225-1mm. The second micropore has a small aperture, good filtering effect, prevents foreign matter from entering, good safety performance, reduces airflow speed and uniformly distributes airflow, and enhances airflow stability. The air inlet 12 includes the side air inlet 121 and the rear air inlet 122, adopts air inlet channels in two directions of the rear and the side, provides multi-angle air inlet, thereby forming a three-dimensional and large-air-volume air inlet mode, so that the portable fan can obtain stable and large air volume. The axial length of the side air inlet 121 accounts for 1 / 4-2 / 3 of the axial length of the shell 1, preferably 1 / 3-1 / 2, thereby ensuring sufficient air inlet area and ensuring the final air outlet effect.

[0077] As shown in FIGS. 2-4 to 2-6, in one embodiment, the filter device 72 is fixed to the rear frame 91, and the housing 1 and the filter device 72 have a space therebetween, and the filter device 72 and the first support part 71 have a space therebetween. By the fixing of the rear frame 91, the housing 1, the filter device 72 and the first support part 71 are adjacent to each other and form a space therebetween, thereby forming the side air inlet 121, the space between the housing 1 and the filter device 72, the space between the first micro hole and the filter device 72, the first sound-damping hole 711, and the air flow passage. Of course, in other embodiments, the filter device 72 can also be fixed to the first support part 71.

[0078] As shown in FIGS. 2-4 to 2-6, in one embodiment, the first sound-damping hole 711 has a larger diameter than the side air inlet 121, and the side air inlet 121 has a larger diameter than the first micro hole. By setting different diameters, the misalignment is further enhanced, and the appearance of the technology is enhanced. The diameter of the first sound-damping hole 711 is 1.9-2.7 mm, the diameter of the side air inlet 121 is 0.9-1.7 mm, and the diameter of the first micro hole is 0.4-0.8 mm.

[0079] As shown in FIGS. 2-4, 2-5, 2-6 and 2-8, the housing 1 contains a sound-absorbing assembly, which is arranged between the cylinder 2 and the air inlet 12 and / or between the cylinder 2 and the air outlet 13. In this embodiment, the sound-absorbing assembly is arranged between the cylinder 2 and the air inlet 12 and between the cylinder 2 and the air outlet 13. The sound-absorbing assembly includes a first sound-absorbing assembly 7 and a second sound-absorbing assembly 8, the first sound-absorbing assembly 7 is arranged between the cylinder 2 and the air inlet 12, and the second sound-absorbing assembly 8 is arranged between the cylinder 2 and the air outlet 13. The sound-absorbing assembly is arranged before entering the cylinder 2 and after leaving the cylinder 2, which can effectively absorb and block the noise generated by the operation of the fan 4 and the motor 3. This double sound-absorbing design can reduce the scattering and propagation of noise, especially when the motor 3 is running at high speed, the noise reduction effect is more obvious. In addition, the arrangement of the sound-absorbing assembly optimizes the air inlet and outlet, which can make the air flow more stable, reduce the turbulence and resistance of the air flow. This optimization not only reduces the noise, but also improves the heat dissipation efficiency.

[0080] As shown in FIG. 2-4 to FIG. 2-6, in one embodiment, the air inlet 12 comprises a first air inlet area and a second air inlet area, the rear end of the housing 1 forms the first air inlet area, and the side wall of the housing 1 corresponding to the first support part 71 forms the second air inlet area. The rear air inlet 122 corresponds to the first air inlet area, and the side air inlet 121 corresponds to the second air inlet area. The rear air inlet can provide straight flow, and the side air inlet can reduce the direct impact of airflow. The combination of the rear air inlet and the side air inlet can provide good air inlet performance and facilitate the provision of sufficient effective air inlet area in a small portable fan.

[0081] As shown in FIG. 2-4, FIG. 2-5 and FIG. 2-8, in one embodiment, the second sound absorption assembly 8 comprises a bracket 81 and a sound absorption piece 82. The bracket 81 is arranged on the inner front side of the housing 1, the sound absorption piece 82 is arranged between the bracket 81 and the housing 1, and the bracket 81 is provided with a plurality of second sound absorption holes 811.

[0082] As shown in FIG. 2-2, FIG. 2-4, FIG. 2-5 and FIG. 2-7, in one embodiment, the flow guide piece 6 is mounted from front to back on the inner front side of the housing 1, and at least part of the flow guide piece 6 is arranged on the front side of the bracket 81. The radial inner side of the outer wall 61 is provided with a first flow guide surface 611, at least part of the first flow guide surface 611 radially increases from back to front. The radial outer side of the inner wall 62 is provided with a second flow guide surface 621, at least part of the second flow guide surface 621 radially decreases from back to front, and the front end of the first flow guide surface 611 exceeds the front end of the second flow guide surface 621. At least part of the inner side surface of the bracket 81 radially decreases from back to front, at least part of the first flow guide surface 611 radially increases from back to front, and the inner side surface of the bracket 81 is smoothly connected with the first flow guide surface 611. In this embodiment, the second flow guide surface 621 radially increases first and then decreases from back to front, and the part of the second flow guide surface 621 radially increasing corresponds to the part of the bracket 81 radially decreasing from back to front; the part of the second flow guide surface 621 radially decreasing corresponds to the part of the first flow guide surface 611 radially increasing. That is, the second flow guide surface 621, the inner side surface of the bracket 81 and the first flow guide surface 611 form a flow channel which decreases first and then increases from back to front.

[0083] This design of first reducing and then increasing is a common aerodynamic optimization strategy, which is usually called the application of "Venturi Effect". This design converts part of the static pressure into kinetic energy, and then partially restores the kinetic energy to static pressure, thereby optimizing the flow characteristics of the airflow. In the narrowing section, the air flow rate increases, which can more efficiently exhaust air, especially suitable for scenarios that require rapid ventilation; in the expanding section, the airflow speed gradually decreases, and the pressure recovers, thereby reducing energy loss and improving the overall efficiency of the system; by optimizing the flow characteristics of the airflow, reducing turbulence and impact of the airflow, thereby reducing the noise during operation of the system; better control of airflow distribution, making the airflow more evenly diffuse to the target area, reducing vortex and resistance of the airflow near the air outlet 13.

[0084] Of course, in other embodiments, the second flow guide surface 621 can also increase radially from back to front, or first increase radially from back to front and then remain unchanged radially from back to front, without being limited by the examples.

[0085] As shown in FIGS. 2-4, 2-5, 2-6 and 2-8, in one embodiment, the axial length of the first sound absorption assembly 7 is greater than the axial length of the second sound absorption assembly 8, and the axial length ratio of the first sound absorption assembly 7 to the second sound absorption assembly 8 is 2-4. The airflow speed and pressure at the air inlet are usually higher than at the air outlet, so a longer first sound absorption assembly 7 is needed to handle high-energy airflow, and the longer first sound absorption assembly 7 can reduce airflow resistance while reducing noise through reasonable design of the structure (such as a multi-layer staggered air inlet structure). The noise at the air outlet is mainly caused by mechanical vibration of the motor 3 and the fan 4 and secondary disturbance of the airflow, so the design of the second sound absorption assembly 8 at the air outlet focuses more on absorbing high-frequency noise. In this embodiment, the sound absorption member 82 in the second sound absorption assembly 8 is sound absorption cotton, which has good noise absorption effect. Of course, in other embodiments, the second sound absorption assembly 8 can be organic fiber material, inorganic fiber material, cotton, foamed plastic, sponge, perforated plate, leather, rubber, plastic, metal, etc. Designing the axial length of the second sound absorption assembly 8 to be 1 / 4-1 / 2 of the axial length of the first sound absorption assembly 7 can reduce the overall axial length of the air outlet component 100, thereby reducing the overall volume of the portable fan.

[0086] As shown in FIG. 2-3 to FIG. 2-5, in one embodiment, the housing 1 is provided with a second support part 101. The second support part 101 is radially arranged between the cylinder 2 and the housing 1, the first support part 71 is arranged from the rear side of the housing 1 to the front, the first support part 71 blocks the second support part 101, the rear end of the second support part 101 exceeds or is flush with the rear end of the fan 4. The second support part 101 radially fixes the cylinder 2 and axially blocks the first support part 71, thereby forming the air inlet cavity 14 and the cylinder 2 area. The second support part 101 exceeds or is flush with the rear end of the fan 4, so that the fan 4 does not excessively affect the fluid of the air inlet cavity 14. The second support part 101 also blocks the rear end of the cylinder 2, so that the cylinder 2 and the first support part 71 are not dislocated or displaced.

[0087] As shown in FIG. 2-4 to FIG. 2-6, in one embodiment, the inner diameter of the first support part 71 is 25.5-29.8mm, and the inner diameter of the bracket 81 is 25.9-28.4mm. The cylinder 2 includes an outer ring part 21, an inner ring part 22, and a plurality of connecting leaves 23 connecting the outer ring part 21 and the inner ring part 22. The ratio of the inner diameter of the outer ring part 21 to the inner diameter of the first sound absorption assembly 7 is 0.8-1.2, and the ratio of the inner diameter of the outer ring part 21 to the inner diameter of the second sound absorption assembly 8 is 0.8-1.2. The inner diameter of the first sound absorption assembly 7, i.e. the inner diameter of the first support part 71, the inner diameter of the second sound absorption assembly 8, i.e. the inner diameter of the bracket 81. That is, the inner diameters of the first support part 71, the outer ring part 21 and the bracket 81 are approximately equal or not much different, so that the overall air duct is more smooth. And the inner diameters of the first support part 71, the outer ring part 21 and the bracket 81 are relatively small, so that the overall volume of the air outlet part 100 is small, which is convenient for users to carry.

[0088] As shown in FIG. 2-9, in one embodiment, the barrel 2 further comprises a buffer sleeve 24 made of soft rubber, which is fixed to the outer side of the outer ring portion 21 to better fix the barrel 2 in the second support portion 101. Of course, in other embodiments, the buffer sleeve 24 can not be provided. As shown in FIG. 2-4, FIG. 2-5 and FIG. 2-9, the motor 3 is an outer rotor motor, which comprises a stator assembly 31 and a rotor assembly 32. The rotor assembly 32 comprises a rotating shaft 321, a bearing 322, a magnetic ring 323 and a housing 324. The fan 4 comprises a hub 41 and a plurality of blades 42 arranged at the radial outer side of the hub 41. One end of the rotating shaft 321 is fixed to the inner side of the inner ring portion 22, and the other end of the rotating shaft 321 is fixed to the hub 41. The bearing 322 is arranged at the outer side of the rotating shaft 321 and is also fixed to the inner side of the inner ring portion 22. The magnetic ring 323 is fixed to the radial inner side of the housing 324 and is arranged at the radial outer side of the stator assembly 31. The housing 324 is directly fixed to the rotating shaft 321, so that the rotating shaft 321, the housing 324 and the magnetic ring 323 can rotate synchronously. By providing the motor 3 in the form of an outer rotor, the fan 4 is directly driven to rotate, and the motor 3 is reasonably arranged in the space.

[0089] As shown in FIG. 2-4 and FIG. 2-10, in one embodiment, the handheld portion 200 is provided with a rechargeable battery 201, which is used to drive the motor 3. The handheld portion 200 is provided with a switch assembly 202, which comprises a stepless adjusting member 2021, a pressing member 2022 and an adjusting plate 2023. The stepless adjusting member 2021 and the pressing member 2022 are electrically connected with the adjusting plate 2023. It should be understood that the stepless adjusting member 2021 is also matched with an encoder 2024, which is connected with an air volume adjusting circuit. When the stepless adjusting member 2021 is rolled, the encoder 2024 outputs a digital signal, so as to realize stepless adjustment of the air volume of the portable fan.

[0090] The handheld portion 200 is provided with a main circuit board 203, which is electrically connected with the rechargeable battery 201, the adjusting plate 2023 and one or more circuit boards in the air outlet component 100, respectively. In this embodiment, the air outlet component 100 is provided with two circuit boards, one of which is arranged at the front end of the inner ring portion 22, and the other of which is arranged at the front end of the inner wall 62. The circuit board arranged at the front end of the inner ring portion 22 is used to connect the motor 3, so as to drive the fan 4. The circuit board arranged at the front end of the inner wall 62 is used to display the air volume, the power, the gear and the like. In front of this circuit board, a display screen (not numbered) is further arranged, which is used to display the corresponding values through light transmission.

[0091] As shown in FIG. 2-4 to FIG. 2-6, in one embodiment, the rear frame 91 is further provided with a light-transmitting portion 92, the mounting portion 712 is mounted with the light-emitting member 10, the light-emitting member 10 emits light backward through the light-transmitting portion 92. Thus, the portable fan also has the function of lighting, which enriches the function of the portable fan. The light-transmitting portion 92 is arranged at the center of the rear frame 91, the light-emitting member is also arranged at the center of the mounting portion 712, the rear air inlet 122 is arranged at the radial outer side of the light-transmitting portion 92 of the rear frame 91, and corresponds to the blade 42 of the fan 4, thus facilitating the formation of straight-flow blowing.

[0092] The above merely describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An air outlet member, wherein, The air outlet component comprises: a housing comprising a first section and a second section, the first section being provided with an air outlet, and the second section being provided with a plurality of air inlets; a fan arranged in the first section, the fan comprising a hub and a plurality of blades arranged around the hub at intervals; a motor arranged in the first section, the motor driving the fan to rotate; wherein an air inlet cavity is formed between the fan and the end of the second section away from the first section.

2. The air outlet component according to claim 1, wherein the side surface of the second section is provided with a plurality of air inlets; further comprising a support frame, the support frame being accommodated in the housing; the support frame comprises a first support portion and a second support portion, the second support portion being arranged close to the air inlets, and the first support portion being arranged close to the air outlet; the second support portion comprises a plurality of first columns arranged at intervals, so that the second support portion presents a hollow structure, and a filter device is arranged between the second support portion and the second section.

3. The air outlet component according to claim 2, wherein the projections of the plurality of air inlets in the radial direction fall within the filter device; the second support portion is a hollow structure; the air outlet component further comprises a fixing frame, the fixing frame being arranged on the radial outside of the second support portion, the fixing frame comprising a plurality of second columns arranged at intervals, and the filter device being arranged between the second columns.

4. The air outlet component according to claim 2, wherein the diameter of the second support portion is smaller than the diameter of the first support portion; the second support portion and the first support portion form a height difference region in the radial direction, and the filter device is arranged in the height difference region.

5. The air outlet component according to claim 2, wherein the second support portion comprises a plate portion, the plate portion being connected to the end surface of the first column away from the first support portion; a functional component is mounted to the back side of the plate portion; the second support portion further comprises a connecting portion, and the first column and the first support portion are connected through the connecting portion.

6. The air outlet component according to claim 2, wherein the first support portion is accommodated in the first section, the second support portion is accommodated in the second section, and the length of the first section is greater than or equal to the length of the second section.

7. The air outlet component according to claim 2, wherein the outer side of the first support portion is provided with a plurality of first matching portions and a plurality of first guide portions, and the inner side of the housing is provided with a plurality of second matching portions and a plurality of second guide portions; the plurality of first matching portions and the plurality of second matching portions correspondingly match, and the plurality of first guide portions and the plurality of second guide portions match.

8. The air outlet component according to claim 1, wherein further comprising a cylinder, the cylinder comprising an outer ring portion, an inner ring portion, and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion; a fan accommodated in the outer ring portion and arranged at the back side of the inner ring portion, the fan comprising a hub and a plurality of blades arranged around the hub at intervals; a motor comprising a stator assembly and a rotor assembly, the outer diameter of the motor being smaller than the inner diameter of the inner ring portion, and the motor being mounted to the inner side of the inner ring portion. The rear end of the fan extends rearward beyond the rear end of the outer ring portion.

9. The air outlet component according to claim 8, wherein, The hub increases radially from rear to front, the inner ring portion is constant radially from rear to front, and the largest diameter of the hub differs from the diameter of the inner ring portion by less than 2 mm; The blades rotate clockwise from rear to front, and the connecting blades first rotate counterclockwise from rear to front and then extend straight forward.

10. The air outlet component according to claim 8, wherein, The inner ring portion is provided with a mounting portion, and the motor further comprises a bearing seat, which is mounted on the mounting portion; The bearing seat is made of metal, and the mounting portion is made of plastic. The bearing seat is fixedly connected to the mounting portion by one or more of the following ways: in-mold injection, ultrasonic welding, hot melting, glue, and tight-fitting pressure.

11. The air outlet component according to claim 8, wherein, The rotor assembly comprises a rotating shaft, a bearing assembly, a magnetic ring, and a yoke; The bearing assembly is arranged in the bearing seat, one end of the rotating shaft is fixed in the bearing seat through the bearing assembly, the magnetic ring is fixed to the radially inner side of the yoke, the yoke is fixedly connected to the rotating shaft, and the yoke and the magnetic ring are arranged on the radially outer side of the bearing seat; The stator assembly is arranged between the bearing seat and the magnetic ring, and the other end of the rotating shaft is fixedly connected to the fan; The yoke comprises an outer side wall, an inner side wall, and a connecting wall; The connecting wall connects the outer side wall and the inner side wall, the inner side wall is arranged on the inner side of the outer side wall, the inner side wall is fixedly connected to the rotating shaft, and the connecting wall is provided with a plurality of through holes; The bearing assembly comprises a first bearing located in front, a second bearing located in rear, and a buffer arranged between the first bearing and the second bearing; The front end of the inner side wall directly abuts against the second bearing, or an elastic member is arranged between the front end of the inner side wall and the second bearing.

12. The air outlet component according to claim 1, wherein, Further comprising a cylinder and a flow guide; The cylinder is arranged in the shell, the cylinder is provided with a motor and a fan connected to the motor; The flow guide is mounted on the inner side of the front end of the shell, and the flow guide is located on the front side of the cylinder.

13. The air outlet component according to claim 12, wherein, Further comprising a first sound absorption assembly, the first sound absorption assembly comprises a first support portion and a filter device, the first support portion is arranged on the inner rear side of the shell, the filter device is arranged in the radial direction between the first support portion and the shell, and the first support portion is provided with a plurality of first sound absorption holes.

14. The air outlet component according to claim 13, wherein, The shell is provided with a second support portion arranged in the radial direction between the cylinder and the shell, the first support portion is mounted from the rear side of the shell to the front, the first support portion blocks the second support portion, and the rear end of the second support portion extends rearward beyond or is flush with the rear end of the fan.

15. The air outlet component according to claim 12, wherein, The second sound absorption assembly is arranged axially between the cylinder and the air outlet, and comprises a support having a hollow cavity; The flow guide member comprises an outer wall and an inner wall arranged in the outer wall; The inner wall is at least partially located in the hollow cavity, the support comprises an inner side surface, a second flow guide surface is arranged on the radial outer side of the inner wall, and the distance between the inner side surface and the second flow guide surface gradually decreases along the direction from the air inlet to the air outlet.

16. The air outlet component according to claim 15, wherein The support is formed with a plurality of second sound absorption holes; The second sound absorption assembly further comprises a sound absorption member arranged between the support and the shell.

17. The air outlet component according to claim 15, wherein The radial inner side of the outer wall is provided with a first flow guide surface, the distance between the first flow guide surface and the second flow guide surface gradually increases along the direction from the air inlet to the air outlet; The second sound absorption assembly and the outer wall are arranged in sequence along the direction from the air inlet to the air outlet, and the inner side surface and the first flow guide surface are smoothly connected; The diameter of the inner surface composed of the inner side surface and the first flow guide surface first decreases and then increases along the direction from the air inlet to the air outlet.

18. The air outlet component according to claim 15, wherein The outer wall and the inner wall are connected by a connecting wall; The cylinder further comprises a buffer sleeve, and the buffer sleeve and the second sound absorption assembly are arranged in sequence along the direction from the air inlet to the air outlet; The cylinder further comprises an outer ring portion, and the buffer sleeve is fixed to the outer side of the outer ring portion.

19. A portable fan, wherein, Comprise: The air outlet component according to claim 1; Further comprising a hand-held portion, and the hand-held portion is internally provided with a battery module.

20. The portable fan according to claim 19, wherein The battery module comprises a holder, a battery pack and a controller, the battery pack comprises at least two battery cells, and the battery pack is accommodated in the holder; The controller comprises a control board and a control chip arranged on the control board, and the controller is arranged on the periphery of the holder.

Images