Air supply mechanism of handheld fan and handheld fan

Abstract

The utility model belongs to the field of handheld fans, and relates to an air supply mechanism of a handheld fan and the handheld fan, and the air supply mechanism of the handheld fan comprises a shell, an air baffle and a fan part; the shell is provided with an air inlet, an air outlet, a flow guide channel, a butt joint channel and a communication opening. The wind shield is arranged in the shell, and the fan part is arranged in the flow guide channel and connected with the wind shield in a sealed mode so as to block the communication opening. The air inlet, the air outlet, the flow guide channel, the butt joint channel and the communication opening are directly formed in the shell, the upper fan part is arranged in the flow guide channel and is in sealed connection with the air baffle to block the communication opening, airflow in the flow guide channel can be prevented from flowing into the butt joint channel, and the air flow in the butt joint channel can be prevented from flowing into the air outlet. Therefore, the fan part drives the air flow to directly flow through the air inlet, the flow guide channel and the air outlet in sequence, direct inlet and direct outlet of the air flow are achieved, the length of the flow guide channel can be effectively shortened, the turbulent flow phenomenon is avoided, and the air flow speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of handheld fans, and more particularly to a handheld fan air supply mechanism and a handheld fan. BACKGROUND

[0002] The main function of a handheld fan is to generate airflow to help people lower their body temperature and feel cool. It is suitable for various occasions and environments, such as outdoor activities, offices, and home use. When traveling in summer, people are prone to heatstroke or feel hot and uncomfortable, and a handheld small fan can bring a cool feeling and effectively relieve physical discomfort.

[0003] Generally, a handheld fan includes a handheld portion, an air supply portion connected to the handheld portion, and a fan assembly installed in the handheld portion. The bottom of the handheld portion is provided with an air inlet, and the air supply portion is provided with an air outlet. The handheld portion and the air supply portion surround the flow channel to form a flow channel that connects the air inlet and the air outlet. The fan assembly drives the airflow to flow through the air inlet, the flow channel, and the air outlet in sequence to achieve air blowing. However, the above-mentioned handheld fan makes the length of the flow channel almost equal to the length of the handheld portion plus the length of the air supply portion, which makes the flow channel too long and prone to turbulence, thereby affecting the airflow speed, so it needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a handheld fan air supply mechanism to effectively shorten the length of the flow channel, avoid turbulence, and improve the airflow speed.

[0005] The present application achieves the above-mentioned purposes through the following technical solutions.

[0006] The present application provides a handheld fan air supply mechanism, which includes a housing, a wind shield, and a fan portion.

[0007] The housing is provided with an air inlet, an air outlet, a flow channel that connects the air inlet and the air outlet, a docking channel, and a communication port that connects the flow channel and the docking channel.

[0008] The wind shield is arranged in the housing, and the fan portion is arranged in the flow channel and sealingly connected to the wind shield to block the communication port.

[0009] In one embodiment, the wind shield and the housing surround the flow channel, and the outer peripheral wall of the fan portion cooperates with the inner peripheral wall of the flow channel at the position of the wind shield to block the communication port.

[0010] In one of the embodiments, the air guide channel comprises an air inlet section and an air outlet section connected in sequence from the air inlet to the air outlet, the inner diameter of the air inlet section is smaller than that of the air outlet section, the air baffle is arranged around the shell to form the air inlet section, and the outer peripheral wall of the fan part is matched with the inner peripheral wall of the air inlet section at a position close to the air outlet.

[0011] In one of the embodiments, the air baffle is provided with an extension part on the side close to the air outlet, the extension part has an extension surface which is connected in alignment with the side of the air baffle away from the docking channel, so that the extension surface is in abutment with the outer peripheral wall of the fan part.

[0012] In one of the embodiments, the side of the extension part away from the air baffle is arranged in abutment with the side of the communication opening away from the air outlet.

[0013] In one of the embodiments, the side of the extension part away from the air baffle is arranged with an arc-shaped guide surface with rounded corners, the guide surface connects the extension surface and the inner peripheral wall of the air outlet section.

[0014] In one of the embodiments, the air guide channel further comprises a connecting section connecting the air inlet section and the air outlet section, the inner diameter of the connecting section is arranged in gradual expansion from the air inlet to the air outlet.

[0015] In one of the embodiments, the fan part comprises a fan barrel, a mounting bracket and a fan assembly; wherein,

[0016] The fan barrel is arranged in the air guide channel and is sealingly connected with the air baffle to block the communication opening, the outer peripheral wall of the mounting bracket is connected with the inner peripheral wall of the fan barrel through a plurality of grates, and the fan assembly is arranged in the mounting bracket.

[0017] In one of the embodiments, one of the grates is arranged in a hollow manner to form a wire passing grate, both ends of the wire passing grate correspondingly penetrate the inner peripheral wall of the mounting bracket and the outer peripheral wall of the fan barrel.

[0018] A guide structure is arranged between the inner peripheral wall of the air guide channel and the outer peripheral wall of the fan barrel, one end of the guide structure is in communication with the communication opening, and the other end of the guide structure is in communication with the wire passing grate.

[0019] The application further provides a handheld fan, which comprises the air supply mechanism of the handheld fan as described above and a handheld part, the handheld part is connected with the shell, and the handheld part is in communication with the end of the docking channel away from the communication opening.

[0020] Compared with the prior art, the embodiment of the application has the following beneficial effects: in the application, the air inlet, the air outlet, the flow guide channel, the docking channel and the communication port are arranged on the shell directly, the upper fan part is arranged in the flow guide channel and is in sealing connection with the baffle, the communication port is blocked by the arrangement, the airflow in the flow guide channel is prevented from flowing into the docking channel, the fan part drives the airflow to flow through the air inlet, the flow guide channel and the air outlet in sequence, the airflow is straight in and straight out, the length of the flow guide channel is effectively shortened, the phenomenon of turbulence is avoided, and the airflow speed is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the scheme in the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0022] Figure 1 is a structure schematic view of the air supply mechanism of the handheld fan in the application;

[0023] Figure 2 is a structure schematic view for showing the internal structure of the shell in the application;

[0024] Figure 3 is Figure 2 is an enlarged structure schematic view of the local part A in

[0025] Figure 4 is Figure 1 is an enlarged structure schematic view of the local part B in

[0026] Figure 5 is a structure schematic view of the fan part in the application;

[0027] Figure 6 is Figure 5 is a structure schematic view of another view of

[0028] Figure 7 is a structure schematic view of the air guide cylinder in the application;

[0029] Figure 8 is a structure schematic view of the air supply mechanism of the handheld fan and the handheld part when the handheld fan and the handheld part are disassembled in the application;

[0030] Figure 9 is a structure schematic view of the air supply mechanism of the handheld fan and the handheld part when the handheld fan and the handheld part are assembled in the application.

[0031] 1000, handheld fan; 100, air supply mechanism of handheld fan; 10, shell; 101, air inlet; 102, air outlet; 103, flow guide channel; 1031, air inlet section; 1032, air outlet section; 1033, connecting section; 104, butt joint channel; 105, communication port; 106, buckle position; 107, guide groove; 11, flow guide shell; 12, butt joint shell; 20, wind shield; 21, extension; 211, extension surface; 212, guide surface; 30, fan part; 31, air guide cylinder; 311, grid; 312, buckle; 313, air outlet ring; 3131, first section; 3132, second section; 314, guide convex rib; 3141, guide inclined surface; 32, mounting bracket; 33, fan assembly; 200, handheld part. DETAILED DESCRIPTION

[0032] Unless otherwise defined, 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 application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application will be described with reference to the drawings and terminology used by a person skilled in the art. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The words "comprising," "including," "having," and the like, as used in the specification are intended to be construed as being inclusive (and therefore open-ended) rather than exclusive and (therefore, closed-ended). The terms "first," "second," and the like, as used in the description, are used for distinguishing between similar objects and do not necessarily indicate an order or sequence thereof.

[0033] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a common embodiment. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment even though it is not mentioned expressly.

[0034] The application provides an air supply mechanism of a handheld fan, which comprises a flow guide channel directly connecting an air inlet and an air outlet on a shell, a fan part arranged in the flow guide channel and sealingly connected with a wind shield, and a communication port. The fan part drives air to flow through the air inlet, the flow guide channel and the air outlet in sequence, so that the air flows straight in and straight out, the length of the flow guide channel is effectively shortened, the phenomenon of turbulence is avoided, and the air speed is improved.

[0035] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0036] Please refer toFigure 1 The embodiment of the present application provides a hand-held fan air supply mechanism 100, which comprises a shell 10, a wind baffle 20 and a fan part 30.

[0037] The shell 10 provides mounting positions for the wind baffle 20, the fan part 30 and other components. Figure 2 And Figure 3 The shell 10 has an air inlet 101, an air outlet 102, a flow guide channel 103, a docking channel 104 and a communication port 105, the flow guide channel 103 communicates the air inlet 101 and the air outlet 102, and the communication port 105 communicates the flow guide channel 103 and the docking channel 104.

[0038] It can be understood that the shapes of the air inlet 101, the air outlet 102 and the communication port 105 are various, which can be regular shapes such as circular, square, triangular and hexagonal, or irregular shapes, and the shapes of the three can be the same or different, which are not limited here.

[0039] Specifically, the air inlet 101 is provided in a plurality of forms, and the plurality of air inlets 101 are arranged in a honeycomb shape, so that the air flow can be well regulated, thereby avoiding the formation of turbulence and aerodynamic noise. Obviously, in other embodiments, the plurality of air inlets 101 can also be arranged in a ring array, a rectangular array or other regular manner, and the plurality of air inlets 101 can also be arranged irregularly, of course, only one air inlet 101 can also be provided. In addition, the end of the flow guide channel 103 away from the air inlet 101 penetrates the shell 10 to form the air outlet 102, so that the air outlet 102 is formed conveniently.

[0040] In the embodiment, the flow guide channel 103 is provided in a straight line type, so that the air flow can be straight in and straight out when the hand-held fan 1000 blows, and the blowing efficiency is improved. In other embodiments, the flow guide channel 103 can also be provided in a curved line type, a broken line type or other line types.

[0041] The docking channel 104 is used to dock and communicate with the hand-held part 200 of the hand-held fan 1000 which will be introduced below, and the specific shape of the docking channel 104 is provided with reference to the shape of the flow guide channel 103, which will not be repeated here.

[0042] By way of example, but not limitation, the length of the docking channel 104 is less than the length of the flow channel 103, for example, the length of the docking channel 104 can be half of the length of the flow channel 103, and for another example, the length of the docking channel 104 can also be one third of the length of the flow channel 103, which can effectively reduce the size of the corresponding position of the shell 10, and in turn reduce the weight of the shell 10, so as to reduce the weight of the handheld fan 1000, and facilitate the lightweight design of the handheld fan 1000.

[0043] The wind shield 20 is arranged in the shell 10. Specifically, the wind shield 20 is arranged in an integral manner with the shell 10, which can not only enhance the connection strength of the wind shield 20 and the shell 10, but also ensure the sealing of the connection between the wind shield 20 and the shell 10. In other embodiments, the wind shield 20 and the shell 10 can also be fixedly connected by adhesion, ultrasonic welding or the like.

[0044] The fan part 30 is arranged in the flow channel 103 and is sealingly connected with the wind shield 20 to block the communication port 105, so as to block the airflow in the flow channel 103 from entering the docking channel 104. The fan part 30 is used to drive the airflow to flow through the air inlet 101, the flow channel 103 and the air outlet 102 in sequence. Specifically, the fan part 30 is detachably installed in the flow channel 103 through the air outlet 10, which facilitates the assembly of the shell 10 and the fan part 30. In addition, the communication port 105 is located between the wind shield 20 and the air outlet 102, which can effectively block the communication port 105 when the fan part 30 is sealingly connected with the wind shield 20.

[0045] It is worth mentioning that the number of the wind shield 20 and the number of the fan part 30 can be one or more. For example, when the wind shield 20 and the fan part 30 are both one, they are sealingly connected to block the communication port 105. For another example, when the wind shield 20 is one and the fan part 30 is two, the two fan parts 30 are sealingly connected with the wind shield 20 to block the communication port 105. For another example, when the wind shield 20 is two and the fan part 30 is one, the fan part 30 is sealingly connected with the two wind shields 20 to block the communication port 105. Similarly, the number of the communication port 105 can also be one or more, and all the communication ports 105 can be blocked by sealingly connecting the wind shields 20 and the fan parts 30 in different combinations, which will not be limited here. Figure 1 Fig. 4 shows the case where the wind shield 20, the fan part 30 and the communication port 105 are all one.

[0046] By the technical scheme, because the fan part 30 is in sealing connection with the baffle 20, and the communication port 105 is arranged to block the communication port 105, the airflow in the guide channel 103 can be effectively prevented from flowing into the docking channel 104, so that the fan part 30 can drive the airflow to flow through the air inlet 101, the guide channel 103 and the air outlet 102 in sequence, the airflow is straight in and straight out, the length of the guide channel 103 is effectively shortened, the turbulence phenomenon is avoided, and the airflow speed is improved.

[0047] Please refer to Figures 1 to 3 Further, the shell 10 is arranged in a bent pipe shape and has the curvedly connected guide shell 11 and docking shell 12, the air inlet 101, the air outlet 102 and the guide channel 103 are arranged in the guide shell 11, the docking channel 104 is arranged in the docking shell 12, and the communication port 105 is arranged at the connection between the guide shell 11 and the docking shell 12. In this way, on the one hand, the air inlet 101, the air outlet 102, the guide channel 103, the docking channel 104 and the communication port 105 are conveniently formed, and on the other hand, the handheld fan 1000 is conveniently designed to be light and small.

[0048] Obviously, in other embodiments, the shell 10 can also be arranged in a T shape and have the vertically connected guide shell 11 and docking shell 12, and the shell 10 can also be arranged in other shapes, which will not be described one by one here.

[0049] Please refer to Figure 2 Considering that the axial length of the fan part 30 is at least equal to the distance between the communication port 105 and the air outlet 102, the fan part 30 can block the communication port 105 when the fan part 30 is in sealing connection with the baffle 20, therefore, if the distance between the communication port 105 and the air outlet 102 is shortened, the axial length of the fan part 30 can be shortened, the weight of the fan part 30 can be reduced, and the lightweight design of the fan part 30 is facilitated. In view of this, in an embodiment of the application, the communication port 105 is located on one side of the docking channel 104 radially close to the air outlet 102. In this way, the distance between the communication port 105 and the air outlet 102 can be effectively shortened.

[0050] Obviously, in other embodiments, the communication port 105 can also be located on the side of the docking channel 104 radially away from the air outlet 102, and the communication port 105 can also be located in the middle of the docking channel 104 radially.

[0051] It can be understood that the size of the communication port 105 is positively correlated with the axial length of the fan part 30, that is, the smaller the communication port 105, the smaller the axial length of the fan part 30, the lighter the weight of the fan part 30, and the more conducive to the lightweight design of the fan part 30. Specifically, the communication port 105 is arranged in a long direction, the long side of the communication port 105 is perpendicular to the axial direction of the fan part 30, and the short side of the communication port 105 is parallel to the axial direction of the fan part 30. The size of the long side of the communication port 105 is 9.0 to 10.0 mm, and the size of the short side of the communication port 105 is 8.0 to 9.0 mm. For example, the long side of the communication port 105 is 9.0 mm, and the short side of the communication port 105 is 8.69 mm. In this way, the minimization of the communication port 105 can be realized, and the lead wire can pass through the communication port 105 conveniently.

[0052] The sealing connection mode of the fan part 30 and the baffle 20 described above has many kinds. Please refer to Figures 1 to 3 In an embodiment of the present application, the baffle 20 and the shell 10 are arranged around to form part of the flow guide channel 103, and the outer peripheral wall of the fan part 30 cooperates with the inner peripheral wall of the flow guide channel 103 at the position of the baffle 20 to block the communication port 105. In this way, the sealing connection of the fan part 30 and the baffle 20 is facilitated.

[0053] Specifically, the baffle 20 is arranged in an arc shape, and the bending arc of the baffle 20 is adapted to the arc of the inner peripheral wall of the flow guide channel 103, so that the flow guide channel 103 forms a cylindrical inner peripheral wall, thereby reducing the turbulence of the airflow, improving the flow rate of the airflow, and reducing the noise.

[0054] Further, the outer peripheral wall of the fan part 30 and the inner peripheral wall of the flow guide channel 103 at the position of the baffle 20 are interference-fitted. In this way, the sealing property of the connection between the fan part 30 and the baffle 20 can be enhanced, and the fixing strength of the fan part 30 can be enhanced.

[0055] As an example but not limitation, a sealing ring (not shown) can be embedded on the outer peripheral wall of the fan part 30 or the inner peripheral wall of the flow guide channel 103 at the position of the baffle 20. When the outer peripheral wall of the fan part 30 cooperates with the inner peripheral wall of the flow guide channel 103 at the position of the baffle 20, the sealing ring is elastically extruded, so that the inner and outer peripheries of the sealing ring elastically abut against the outer peripheral wall of the fan part 30 and the inner peripheral wall of the flow guide channel 103 at the position of the baffle 20 under the action of the self-rebound force. In this way, the sealing property of the connection between the fan part 30 and the baffle 20 can be further enhanced. Further, the sealing ring can be a solid ring body made of a resilient material such as silica gel or rubber, or can be a hollow inflatable ring body. In this way, the deformation of the sealing ring under the action of external force is facilitated.

[0056] In other embodiments, the baffle 20 can also be provided with a spliced end face, and the end face of the fan part 30 is spliced with the spliced end face to achieve the sealed connection of the fan part 30 and the baffle 20.

[0057] Please refer to Figures 1 to 3 , considering that the outer peripheral wall of the fan part 30 does not need to cooperate with the entire inner peripheral wall of the flow guide channel 103, and only needs to cooperate with the inner peripheral wall of the position of the baffle 20 on the flow guide channel 103, the sealed connection of the fan part 30 and the baffle 20 can be achieved, which is beneficial to the sealed connection of the fan part 30 and the baffle 20. In view of this, in an embodiment of the present application, the flow guide channel 103 includes an air inlet section 1031 and an air outlet section 1032 connected in sequence from the air inlet to the air outlet, the inner diameter of the air inlet section 1031 is smaller than the inner diameter of the air outlet section 1032, the baffle 20 is arranged around the housing 10 to form the air inlet section 1031, and the position of the outer peripheral wall of the fan part 30 close to the air outlet 102 cooperates with the inner peripheral wall of the air inlet section 1031, and the remaining positions of the outer peripheral wall of the fan part 30 are spaced apart from the inner peripheral wall of the air outlet section 1032.

[0058] Through the above technical solution, the baffle 20 and the housing 10 are arranged around the air inlet section 1031 of the flow guide channel 103, so that the outer peripheral wall of the fan part 30 only needs to cooperate with the inner peripheral wall of the air inlet section 1031, and the sealed connection of the fan part 30 and the baffle 20 can be achieved. Moreover, by virtue of the arrangement that the inner diameter of the air inlet section 1031 is smaller than the inner diameter of the air outlet section 1032, the wall thickness of the air outlet section 1032 can be smaller than the wall thickness of the air inlet section 1031, that is, the wall thickness of the air outlet section 1032 is reduced, thereby the weight of the air outlet section 1032 can be reduced, which is beneficial to the light weight of the handheld fan 1000.

[0059] Please refer to Figure 1 , Figure 2 and Figure 4 , in order to enhance the sealing connection strength of the baffle 20 and the fan part 30, in an embodiment of the present application, the side of the baffle 20 close to the air outlet 102 is provided with an extension 21, the extension 21 has an extension surface 211, the extension surface 211 is connected in the same plane with the side of the baffle 20 away from the butt joint channel 104, so that the extension surface 211 abuts against the outer peripheral wall of the fan part 30. By virtue of the arrangement that the extension 21 is additionally arranged on the baffle 20, the abutting area of the fan part 30 and the baffle 20 can be increased, and the sealing connection strength of the baffle 20 and the fan part 30 can be enhanced.

[0060] Specifically, the extension part 21 is located below the fan part 30, so that the extension part 21 can also bear the fan part 30; and the extension part 21 is integrally formed with the air baffle 20, so as to enhance the fixing strength of the extension part 21. In other embodiments, the extension part 21 can also be located above the fan part 30; and the extension part 21 and the shell 10 can also be fixed by bonding, ultrasonic welding or the like.

[0061] Further, please refer to Figure 1 、 Figure 2 and Figure 4 In an embodiment of the present application, the side of the extension part 21 away from the air baffle 20 is adjacent to the side of the communication port 105 away from the air outlet 102, so that the communication port 105 and the air inlet section 1031 are spaced apart by the extension part 21, rather than being directly adjacent to the air inlet section 1031, thereby effectively preventing airflow from flowing to the communication port 105.

[0062] It is worth mentioning that the extension surface 211 and the communication port 105 are spaced apart in the axial direction of the communication port 105, i.e. the extension surface 211 is located above the communication port 105, so that there is a height difference between the extension surface 211 and the communication port 105, which can further prevent airflow from flowing to the communication port 105.

[0063] Obviously, in other embodiments, the side of the extension part 21 away from the air baffle 20 can also be spaced apart from the side of the communication port 105 away from the air outlet 102.

[0064] Please refer to Figure 1 、 Figure 2 and Figure 4 In order to facilitate the fan part 30 to extend from the air outlet section 1032 to the extension part 21, in an embodiment of the present application, the side of the extension part 21 away from the air baffle 20 is rounded and has an arc-shaped guide surface 212, which connects the extension surface 211 and the inner peripheral wall of the air outlet section 1032. In this way, when the fan part 30 extends from the air outlet section 1032 to the extension part 21, the guide surface 212 can guide the fan part 30, thereby achieving the purpose of facilitating the fan part 30 to extend from the air outlet section 1032 to the extension part 21.

[0065] Please refer to Figures 1 to 3, in order to facilitate the fan part 30 from the air outlet section 1032 into the air inlet section 1031, in an embodiment of the present application, the guide channel 103 further comprises a connecting section 1033 connecting the air inlet section 1031 and the air outlet section 1032, the inner diameter of the connecting section 1033 is gradually expanded from the air inlet to the air outlet, so as to form an inclined guide slope on the inner circumferential wall of the connecting section 1033, which can guide the fan part 30 when the fan part 30 is extended from the air outlet section 1032 into the air inlet section 1031, thereby achieving the purpose of facilitating the fan part 30 to extend from the air outlet section 1032 into the air inlet section 1031.

[0066] Specifically, the side of the extension part 21 facing the docking channel 104 is connected with the inner circumferential wall of the connecting section 1033, so that the extension part 21 and the inner circumferential wall of the connecting section 1033 are sealingly connected, thereby further effectively preventing airflow from flowing to the communication port 105.

[0067] Please refer to Figure 1 , Figure 2 and Figure 4 , considering that if the length of the extension part 21 in the axial direction of the guide channel 103 is increased, the abutting area of the extension surface 211 and the outer circumferential wall of the fan part 30 can be increased, and the tightness of the abutting of the extension surface 211 and the outer circumferential wall of the fan part 30 can be enhanced, thereby further effectively preventing airflow from flowing to the communication port 105, and also improving the fixing strength of the fan part 30, therefore, in an embodiment of the present application, the end of the extension part 21 away from the baffle plate 20 exceeds the connection between the connecting section 1033 and the air outlet section 1032, so as to increase the length of the extension part 21 in the axial direction of the guide channel 103.

[0068] Please refer to Figures 2 to 6 , in an embodiment of the present application, the fan part 30 comprises a guide cylinder 31, a mounting bracket 32 and a fan assembly 33, the guide cylinder 31 is arranged in the guide channel 103, and the guide cylinder 31 is sealingly connected with the baffle plate 20 to block the communication port 105, the outer circumferential wall of the mounting bracket 32 is connected with the inner circumferential wall of the guide cylinder 31 through a plurality of gratings 311, and the fan assembly 33 is arranged in the mounting bracket 32.

[0069] Specifically, the guide cylinder 31, the mounting bracket 32 and the grating 311 are integrally formed, so as to ensure the structural strength of the fan part 30. In addition, the fan assembly 33 can be mounted on the mounting bracket 32 by the above-mentioned fixed connection, or the fan assembly 33 can be mounted on the mounting bracket 32 by detachable connection such as buckle connection, threaded connection, magnetic connection, etc., which is not limited here.

[0070] Further, the outer peripheral wall of the air duct 31 is in interference fit with the inner peripheral wall of the flow guide channel 103, so that the outer peripheral wall of the air duct 31 and the inner peripheral wall of the flow guide channel 103 are formed in tight fit, thereby enhancing the fixing strength of the air duct 31.

[0071] By the above technical solution, when assembling the fan part 30 and the shell 10, first, the air duct 31 is inserted into the air outlet section 1032 from the air outlet, so that the end face of the air duct 31 abuts against the guide face 212; then, the air duct 31 is continuously pushed, so that the air duct 31 is gradually moved under the guidance of the guide face 212, until the outer peripheral wall of the air duct 31 abuts against the extension face 211; finally, the air duct 31 is continuously pushed, so that the air duct 31 is gradually moved under the guidance of the inner peripheral wall of the connecting section 1033, until the outer peripheral wall of the air duct 31 abuts against the inner peripheral wall of the air inlet section 1031, thereby completing the assembly of the fan part 30 and the shell 10. Obviously, when disassembling the fan part 30 and the shell 10, the specific disassembly steps are the reverse order of the above-mentioned assembly steps of the fan part 30 and the shell 10, which will not be described here.

[0072] In other embodiments, the air duct 31 can be detachably connected to the flow guide channel 103 by thread connection, magnetic attraction connection, etc., which will not be described here. In addition, in other embodiments, the fan part 30 can also be provided to only include the air duct 31 and the fan assembly 33, and the fan assembly 33 is directly mounted to the inner wall of the air duct 31.

[0073] Please refer to Figure 2 and Figure 7 , in order to be able to guide the airflow when the airflow flows into and out of the air duct 31, in an embodiment of the present application, the inner diameter of the air inlet end of the air duct 31 is gradually reduced from the air inlet 101 to the air outlet 102; the inner diameter of the air outlet end of the air duct 31 is gradually increased from the air inlet 101 to the air outlet 102, i.e. the inner diameter of the air outlet ring 313 in the above-mentioned embodiment is gradually increased from the air inlet 101 to the air outlet 102, so that the air inlet end and the air outlet end of the air duct 31 are both provided in a trumpet shape, thereby being able to play a guiding role when the airflow passes through, and further being able to flow into and out of the air duct 31.

[0074] Obviously, in other embodiments, only the inner diameter of the air inlet end of the air duct 31 can be provided to be gradually reduced from the air inlet 101 to the air outlet 102, or only the inner diameter of the air outlet end of the air duct 31 can be provided to be gradually increased from the air inlet 101 to the air outlet 102.

[0075] Please refer to Figure 2 , Figure 5 and Figure 6In order to enhance the fixing strength of the fan part 30, the inner circumferential wall of the guide flow channel 103 is provided with a buckle position 106 near the air outlet 102, and the outer circumferential wall of the air guide cylinder 31 is provided with a buckle 312 near the air outlet end, the buckle 312 is buckled with the buckle position 106, so as to enhance the fixing strength of the fan part 30.

[0076] Further, referring to Figure 2 、 Figure 5 and Figure 6 , the air guide cylinder 31 is provided with an air outlet end formed as an air outlet ring 313, the air outlet ring 313 has a first section 3131 and a second section 3132 connected with the first section 3131, the outer diameter of the first section 3131 is smaller than that of the second section 3132, and the end of the first section 3131 away from the second section 3132 is in abutment with the end face of the shell 10 adjacent to the air outlet 102, so that the second section 3132 is spaced from the end face of the shell 10 adjacent to the air outlet 102. In this way, when the fan part 30 is disassembled, the fingers or tools can be inserted between the second section 3132 and the end face of the shell 10 adjacent to the air outlet 102, and the second section 3132 is pried to pry out the air guide cylinder 31, thereby facilitating the prying out of the air guide cylinder 31 from the guide flow channel 103.

[0077] Referring to Figure 2 、 Figure 5 and Figure 6 , in order to realize the straight in and out of the air flow from the air guide cylinder 31, in an embodiment of the present application, the air inlet 101 is located above the docking channel 104, so that the air inlet end of the air guide cylinder 31 is directly towards the air inlet 101; the air outlet end of the air guide cylinder 31 directly extends out of the air outlet 102.

[0078] Referring to Figure 2 、 Figure 5 and Figure 6 , in order to facilitate the connection of the electrical connection part of the fan assembly 33 with the electrical connection part in the handheld part 200 to be introduced below through the wire, in an embodiment of the present application, a grid 311 is hollowly arranged to form a wire passing grid 311, both ends of the wire passing grid 311 correspond to the inner circumferential wall of the mounting bracket 32 and the outer circumferential wall of the air guide cylinder 31; a guide structure is arranged between the inner circumferential wall of the guide flow channel 103 and the outer circumferential wall of the air guide cylinder 31, one end of the guide structure is in communication with the communication port 105, and the other end of the guide structure is in communication with the wire passing grid 311.

[0079] When the electric connection part of the fan assembly 33 is connected with the electric connection part in the handheld part 200 through the wire, first, the first end of the wire is connected with the electric connection part of the fan assembly 33, second, the second end of the wire is sequentially passed through the wire grid 311, the guide structure and the communication port 105, and finally, the second end of the wire is connected with the electric connection part in the handheld part 200, so that the electric connection of the electric connection part of the fan assembly 33 and the electric connection part in the handheld part 200 is completed.

[0080] Specifically, referring to Figure 2 , Figure 5 and Figure 6 , the guide structure includes a guide groove 107 and two guide ribs 314. The guide groove 107 is arranged on the inner circumferential wall of the guide channel 103, and the side of the guide groove 107 close to the air outlet 102 is arranged through, and the side of the guide groove 107 away from the air outlet 102 is arranged through to communicate with the communication port 105. The two guide ribs 314 are arranged in parallel on the outer circumferential wall of the duct 31, and each guide rib 314 is arranged to extend along the axial direction of the duct 31, and the two guide ribs 314 correspondingly slide against the two groove walls in the width direction of the guide groove 107. In this way, on the one hand, the guide groove 107 and the two guide ribs 314 can guide the installation of the duct 31, and on the other hand, the two guide ribs 314 can form a channel for the wire to pass through.

[0081] In other embodiments, the guide structure can also be a guide groove 107 and a guide rib 314, and the guide rib 314 slides against one side wall in the width direction of the guide groove 107.

[0082] Further, referring to Figure 2 , Figure 5 and Figure 6 , the thickness of the guide rib 314 in the radial direction of the duct 31 is arranged to taper from the air outlet 102 to the air inlet 101, so that the side of the guide rib 314 away from the duct 31 forms a guide slope 3141. In this way, the guide slope 3141 can guide the guide rib 314 when it slides into the guide groove 107, thereby facilitating the sliding of the guide rib 314 into the guide groove 107.

[0083] Referring to Figure 8 and Figure 9 , the application also provides a handheld fan 1000, which includes the above-mentioned handheld fan air supply mechanism 100 and a handheld part 200. The handheld part 200 is connected with the shell 10, and the handheld part 200 communicates with the end of the docking channel 104 away from the communication port 105. The connection between the handheld part 200 and the shell 10 can be fixed connection or detachable connection as in the above-mentioned embodiments, which is not limited here.

[0084] The specific structure of the air supply mechanism 100 of the handheld fan 1000 is referred to the above-mentioned embodiments. Since the handheld fan 1000 system adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0085] Obviously, the above-described embodiments are only some of the embodiments of the present application, not all the embodiments. The preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be implemented in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacements to some of the technical features. Any equivalent structure made by using the content of the specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. An air delivery mechanism for a handheld fan, characterized in that, The air delivery mechanism of the handheld fan includes: a housing, a baffle plate, and a fan section; wherein, The housing is provided with an air inlet, an air outlet, a guide channel connecting the air inlet and the air outlet, a docking channel, and a connecting port connecting the guide channel and the docking channel; The wind baffle is located inside the housing, and the fan is located inside the airflow channel and is sealed to the wind baffle to block the communication port.

2. The air delivery mechanism of the handheld fan according to claim 1, characterized in that, The baffle plate and the housing are arranged together to form part of the flow channel. The outer peripheral wall of the fan part cooperates with the inner peripheral wall of the flow channel at the location of the baffle plate to block the communication port.

3. The air delivery mechanism of the handheld fan according to claim 2, characterized in that, The airflow channel includes an air inlet section and an air outlet section connected sequentially from the air inlet to the air outlet. The inner diameter of the air inlet section is smaller than the inner diameter of the air outlet section. The baffle plate and the housing surround the air inlet section to form the air inlet section. The outer peripheral wall of the fan unit near the air outlet is matched with the inner peripheral wall of the air inlet section.

4. The air delivery mechanism of the handheld fan according to claim 3, characterized in that, The wind deflector has an extension on the side near the air outlet. The extension has an extension surface that is flush with the side of the wind deflector facing away from the docking channel, so that the extension surface abuts against the outer peripheral wall of the fan unit.

5. The air delivery mechanism of the handheld fan according to claim 4, characterized in that, The side of the extension away from the wind deflector is adjacent to the side of the connecting opening away from the air outlet.

6. The air delivery mechanism of the handheld fan according to claim 4, characterized in that, The extension portion has a rounded corner on the side away from the wind deflector, forming an arc-shaped guide surface. The guide surface connects the extension surface and the inner peripheral wall of the air outlet section.

7. The air delivery mechanism of the handheld fan according to claim 3, characterized in that, The airflow channel also includes a connecting section that connects the air inlet section and the air outlet section. The inner diameter of the connecting section gradually expands from the air inlet to the air outlet.

8. The air delivery mechanism of the handheld fan according to claim 1, characterized in that, The fan unit includes an air guide tube, a mounting bracket, and a fan assembly; wherein... The air guide tube is disposed in the airflow channel, and the air guide tube is sealed to the wind baffle to block the communication port. The outer peripheral wall of the mounting bracket is connected to the inner peripheral wall of the air guide tube through multiple grilles. The fan assembly is disposed on the mounting bracket.

9. The air delivery mechanism of the handheld fan according to claim 8, characterized in that, The aforementioned grille is hollow to form a wire-passing grille, and the two ends of the wire-passing grille penetrate the inner peripheral wall of the mounting bracket and the outer peripheral wall of the air guide duct respectively; A guide structure is provided between the inner peripheral wall of the flow channel and the outer peripheral wall of the air guide tube. One end of the guide structure is connected to the communication port, and the other end of the guide structure is connected to the wire grid.

10. A handheld fan, characterized in that, The handheld fan includes an air delivery mechanism as described in any one of claims 1 to 9 and a handheld part, the handheld part being connected to the housing and communicating with the end of the docking channel away from the communication port.

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