Portable fan

Abstract

The portable fan comprises a main shell, an air outlet is formed in the main shell, and a bottom plate with sieve holes is arranged on the side, away from the air outlet, of the main shell; the first battery compartment cover and the second battery compartment cover respectively wrap the side wall of the main shell to form a battery compartment; wherein an air guide pipe and an air chamber are arranged in the main shell, the air guide pipe is communicated with the air chamber, the air outlet is located in the side, away from the air chamber, of the air guide pipe, a fan main machine is arranged in the air guide pipe, and a first air inlet face and a second air inlet face are arranged on the side wall of the air chamber. The first air inlet face and the second air inlet face are matched with the bottom plate to form an air inlet, and air flow flows to the air outlet from the air inlet under the rotation action of the fan main machine. And the fan main machine can obtain enough air inlet flow to ensure the air outlet efficiency of the fan main machine.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a portable fan. Background Art

[0002] In the hot summer, portable fans have become a must-have item for people to get rid of the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

[0003] The portable fan in the prior art includes: a housing and a fan assembly arranged in the housing, an air inlet and an air outlet are provided on the housing, and the fan assembly drives the airflow from the air inlet to the air outlet. The inventor of the present application found in the research that the portable fan in the prior art will be arranged with a battery compartment that occupies a large space in order to maintain a longer battery life. After the battery compartment is arranged, it is bound to occupy more space in the device, which is not conducive to the arrangement of the air inlet. Although the performance of the fan host in the prior art is already excellent enough, if the air inlet is narrow, it will not be possible to replenish a large amount of airflow to the fan host in time, which ultimately leads to poor air outlet efficiency of the fan host. Utility Model Content

[0004] The purpose of the present application is to provide a portable fan with a reasonable structural layout, which can ensure the fan's air outlet efficiency by increasing the air intake volume.

[0005] The present application provides a portable fan, comprising:

[0006] A main shell, wherein an air outlet is provided on the main shell, and a bottom plate is provided on a side of the main shell away from the air outlet, wherein a sieve hole for air intake is provided on the bottom plate;

[0007] A first battery compartment cover and a second battery compartment cover, wherein the first battery compartment cover and the second battery compartment cover respectively wrap the side wall of the main housing to form a battery compartment;

[0008] An air duct and an air chamber are provided inside the main shell body, and the air duct and the air chamber are connected to each other, and the air outlet is located on the side of the air duct away from the air chamber. A fan main unit is arranged in the air duct, and a first air inlet surface and a second air inlet surface are provided on the side wall of the air chamber. The first air inlet surface and the second air inlet surface cooperate with the bottom plate to form an air inlet, and under the rotation of the fan main unit, the air flow flows from the air inlet to the air outlet.

[0009] Optionally, the first battery compartment cover and the second battery compartment cover are connected to the side wall of the main housing by snap-fitting; and / or,

[0010] A lithium-ion battery with a soft-pack structure is placed in the battery compartment formed by the first battery compartment cover and the second battery compartment cover.

[0011] Optionally, the main housing is further provided with an electronic compartment, in which a circuit module serving as a control core is arranged, and the circuit module is respectively connected to the lithium-ion battery and the fan host through lines; and / or,

[0012] The electronic compartment is recessed inward from the main shell to form an independent open compartment structure, and line through holes connecting other compartments are provided at the corners of the electronic compartment. The lines connecting the circuit module with the lithium-ion battery and the fan host enter other compartments from the line through holes.

[0013] Optionally, the circuit module is mainly composed of two parts: a circuit board and an outer cover. The circuit board adopts a control circuit board in the prior art. The circuit board is fixed to a screw hole provided in the electronic compartment by bolts, and / or,

[0014] The outer cover is provided with a charging port, a power button and an indicator light, the circuit board is connected to the charging port, the power button and the indicator light through circuits respectively, and the outer cover as a whole is assembled on the electronic compartment by snap-fitting and nesting.

[0015] Optionally, a circular through hole is provided between the air duct and the electronic compartment, and the air duct and the electronic compartment are connected to each other through the circular through hole; and / or,

[0016] A cylindrical flexible shell is also provided inside the air duct, an inner sleeve is provided outside the fan main unit, and the fan main unit is assembled inside the flexible shell by nesting the inner sleeve.

[0017] Optionally, the outer surface of the flexible shell is raised to form a plurality of convex points, and the plurality of convex points are evenly arranged on the outer surface of the flexible shell, and the outer surface of the flexible shell is in contact with and connected to the inner wall of the air duct.

[0018] Optionally, a partition and a plurality of groups of air guide plates are provided in the air guide duct, wherein a plurality of air guide plates are distributed in a circumferential annular array along the partition, and the air guide duct cooperates with the partition and the plurality of groups of air guide plates to form an air outlet; and / or,

[0019] One end of the air guide plate is connected to the inner wall of the air guide pipe, and the other end of the air guide plate is connected to the partition plate.

[0020] Optionally, the partition has an arc-shaped surface structure facing the inner side of the air guide duct. When the fan main unit blows out air, it will blow toward the arc surface of the partition. Under the guidance of the arc surface, the airflow is dispersed to the air guide plates and leaves the air outlet along the gaps between the air guide plates.

[0021] Optionally, the first air inlet surface and the second air inlet surface are arranged on the side wall of the air chamber, and a plurality of groups of circular holes serving as air circulation channels are evenly distributed on the first air inlet surface and the second air inlet surface;

[0022] Optionally, the first air inlet surface and the second air inlet surface are arranged on non-adjacent planes of the main shell.

[0023] The beneficial effect of the embodiments of the present application is that the portable fan comprises: a main shell and a first battery compartment cover and a second battery compartment cover which respectively wrap the side walls of the main shell to form a battery compartment, and the batteries which occupy a larger area are rationally arranged so that the airflow can flow from the air inlet to the air outlet more efficiently, and an air chamber with multi-sided air intake capability is provided under the main shell, and the increased area of ​​the air chamber is utilized to increase the overall air intake volume of the device, so that the fan host can obtain sufficient air intake flow to ensure the air outlet efficiency of the fan host. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the explosion structure of a portable fan according to a specific embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of a top plan view of a portable fan according to a specific embodiment of the present application;

[0028] Figure 4 It is a cross-sectional view of the AA plane (without the inner sleeve) of a portable fan according to a specific embodiment of the present application;

[0029] Figure 5 A BB (without the inner sleeve) plane cross-sectional view of a portable fan according to a specific embodiment of the present application;

[0030] Figure 6 This is a structural schematic diagram of an inner sleeve, a flexible housing and a fan main unit according to a specific embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of the inner sleeve structure of a specific embodiment of the present application.

[0032] 100, main housing; 110, air outlet; 120, air duct; 130, electronic compartment; 140, air chamber; 141, first air inlet surface; 142, second air inlet surface; 150, bottom plate; 160, sliding cover;

[0033] 210, first battery compartment cover; 220, second battery compartment cover;

[0034] 310, grille; 320, flexible shell; 330, inner sleeve; 331, loading ring frame; 332, guide plate; 333, outer shell;

[0035] 410, circuit module; 411, circuit board; 412, outer cover; 420, fan host;

[0036] 500. Lithium-ion battery. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0039] Example 1

[0040] See also Figure 1-3 , Figure 1 This is a schematic diagram of the overall structure of the portable fan of this embodiment; Figure 2 This is a schematic diagram of the explosion structure of the portable fan in this application; Figure 3 Schematic diagram of the top plan structure of the portable fan in this embodiment.

[0041] A portable fan includes: a main housing 100, a first battery compartment cover 210 and a second battery compartment cover 220. The first battery compartment cover 210 and the second battery compartment cover 220 respectively wrap the side wall of the main housing 100 to form a battery compartment, the main housing 100 is provided with an air outlet 110, and a bottom plate 150 is provided on the side of the main housing 100 away from the air outlet 110, and the bottom plate 150 is provided with a sieve hole for air intake;

[0042] The main housing 100 is provided with an air duct 120 and an air chamber 140, the air duct 120 and the air chamber 140 are connected to each other, and the air outlet 110 is located on the side of the air duct 120 away from the air chamber 140, and the bottom plate 150 closes the end surface of the air chamber 140 away from the air duct 120, wherein the side wall of the air chamber 140 is provided with a first air inlet surface 141 and a second air inlet surface 142; the first air inlet surface 141 and the second air inlet surface 142 cooperate with the bottom plate 150 to transport fresh air into the air chamber 140;

[0043] In this embodiment, a fan assembly 420 is arranged in the air duct 120, and the outer walls on both sides of the main shell 100 serve as the bottom plates of the first battery compartment cover 210 and the second battery compartment cover 220, and cooperate with the first battery compartment cover 210 and the second battery compartment cover 220 to form two independent battery compartments. The battery compartments are distributed on both sides of the main shell 100, so that the air duct 120 and the air chamber 140 form an integral structure, which can increase the volume of the air chamber 140 and the air duct, and it is easier to arrange the air duct to increase the air inlet area of ​​the air inlet, thereby enhancing the efficiency of the portable fan; by reasonably improving the planning of the air inlet area and the battery compartment, the volume of the portable fan can be further reduced to achieve the purpose of portability;

[0044] The first battery compartment cover 210 and the second battery compartment cover 220 may also be provided with a metal clip (the corresponding structure diagram is not drawn in this application) to facilitate the use of a rope to achieve the effect of hanging around the neck or across the body; the metal clip structure is a common technical device and is not described in detail in this application, but the corresponding hook assembly improvement also falls within the protection scope of this application;

[0045] The connection between the first battery compartment cover 210 and the second battery compartment cover 220 and the side wall of the main housing 100 is mainly achieved by snap-fitting, and the contact and connection end surfaces of the first battery compartment cover 210 and the second battery compartment cover 220 and the main housing 100 are provided with sealing gaskets for isolating moisture from entering and improving the overall waterproof performance of the device. The battery compartment formed by the first battery compartment cover 210 and the second battery compartment cover 220 is provided with a soft-pack lithium-ion battery 500, and the lithium-ion battery 500 can also be placed in only one of the battery compartments as needed;

[0046] See also Figure 4 , Figure 4 This is a AA (without inner sleeve) plane cross-sectional view of the portable fan of the present application.

[0047] like Figure 4 As shown, in some embodiments, the main housing 100 is further provided with an electronic compartment 130, and a circuit module 410 as a control core is provided in the electronic compartment 130, and the circuit module 410 is connected to the lithium-ion battery 500 and the fan assembly 420 through lines respectively;

[0048] like Figure 4 Combined with Figure 2 As shown, in this embodiment, the electronic compartment 130 is recessed inward from the main shell 100 to form an independent open compartment structure, and the corners of the electronic compartment 130 are provided with circuit through holes connected to other compartments, and the circuits connecting the circuit module 410 with the lithium-ion battery 500 and the fan assembly 420 enter the other compartments from the circuit through holes; the circuit module 410 is mainly composed of two parts, a circuit board 411 and an outer cover 412. The circuit board 411 adopts the control circuit board in the prior art, and the circuit board 411 is fixed to the screw holes provided in the electronic compartment 130 by bolts as a whole, and the outer cover 412 is provided with a charging port, a power button and an indicator light, and the circuit board 411 is respectively connected to the charging port, the power button and the indicator light through the circuit, and the outer cover 412 is assembled on the electronic compartment 130 by snap-fit ​​nesting, and used as the outer cover of the electronic compartment 130;

[0049] In some embodiments, a circular through hole is provided between the air duct 120 and the electronic compartment 130, the air duct 120 and the electronic compartment 130 are interconnected through the circular through hole, the line is arranged from the circular through hole into the air duct 120, the air duct 120 is a cylindrical structure, a cylindrical flexible shell 320 is further provided inside the air duct 120, an inner sleeve 330 is provided outside the fan assembly 420, and the fan assembly 420 is nested and assembled on the inner wall of the flexible shell 320 through the inner sleeve 330;

[0050] The flexible shell 320 is specifically a silicone shell. However, the material of the flexible shell 320 is not limited thereto. Depending on the specific application scenario, in some embodiments, the material of the flexible shell 320 can be (but not limited to): engineering plastics, metal sheets. The setting of the flexible shell 320 can provide better protection for the air duct 120 and the fan assembly 420. At the same time, the larger friction coefficient on the surface of the flexible shell 320 can also make the fan assembly 420 more firmly connected to the air duct 120.

[0051] In some embodiments, the outer surface of the flexible shell 320 is raised to form a plurality of convex points, and the plurality of convex points are evenly arranged on the outer surface of the flexible shell 320. The provision of the convex points can reduce the contact area between the fan assembly 420 and the air duct 120, improve the assembly efficiency of the fan assembly 420 and the air duct 120, and at the same time, the convex points have a larger deformation space, which can adapt to a wider range of fan housing sizes.

[0052] In some embodiments, the fan assembly 420 adopts a device in the prior art, and the fan assembly 420 is mounted on the inner wall of the flexible shell 320. The fan assembly 420 forms a negative pressure area at one end of the air duct 120 close to the wind chamber 140 by rotating, so that the airflow in the wind chamber 140 gathers on one side of the air duct 120. The first air inlet surface 141 and the second air inlet surface 142 and the sieve holes on the bottom plate 150 located in the opposite direction of the wind chamber 140 allow the airflow outside the portable fan to enter the wind chamber 140 from different directions, and the fan assembly 420 sends the airflow from the air outlet 110 at one end of the air duct 120 away from the wind chamber 140 to the human body outside the air outlet 110 to meet the cooling needs;

[0053] See also Figure 5 , Figure 5 BB (without the inner sleeve) plane cross-sectional view of the portable fan in this embodiment;

[0054] In some embodiments, the first air inlet surface 141 and the second air inlet surface 142 are arranged on the side wall of the air chamber 140, and a plurality of groups of circular holes are evenly distributed on the first air inlet surface 141 and the second air inlet surface 142, and these circular holes serve as channels for air circulation;

[0055] Among the six groups of planes constituting the air chamber 140, two groups of planes serve as the outer wall of the main shell 100 and participate in constituting a part of the battery compartment. The two groups of planes are closed structures, and the plane of the air chamber 140 close to the air duct 120 is directly connected to the air duct 120, and the plane of the air chamber 140 away from the air duct 120 is the bottom plate 150, and the sieve holes provided on the bottom plate 150 serve as air passages, and the first air inlet surface 141 and the second air inlet surface 142 are the remaining two groups of planes of the air chamber 140, that is, there are three air inlet surfaces in the overall structure of the air chamber 140, which can fully meet the air intake requirements of the fan assembly 420, and by distributing the lithium-ion batteries 500 that occupy a larger volume on both sides of the main shell 100, reasonable planning enables the airflow to flow from the air inlet to the air outlet more efficiently, and the increased air intake area of ​​the air chamber 140 is used to increase the overall air intake of the device, so that the fan assembly 420 can obtain sufficient air intake flow to ensure the air outlet efficiency of the fan assembly 420;

[0056] See also Figure 6 , Figure 6 It is a schematic structural diagram of the inner sleeve, flexible shell and fan main unit of this embodiment.

[0057] like Figure 6As shown, in some embodiments, a partition and several groups of air guide plates are provided in the air guide duct 120, wherein a plurality of air guide plates are distributed in a circumferential ring array along the partition, and one end of the air guide plate is connected to the inner wall of the air guide duct 120, and the other end of the air guide plate is connected to the partition, and the air guide duct 120 cooperates with the partition and several groups of air guide plates to form an air outlet 110.

[0058] In some embodiments, the partition has a curved surface structure facing the inner side of the air guide duct 120. When the fan assembly 420 blows out air, it will blow toward the curved surface of the partition, disperse to the air guide plate under the guidance of the curved surface, and leave the device along the gap between the air guide plates. After being combed by the partition and the air guide plate, the airflow generated by the fan assembly 420 is evenly dispersed outward, reducing the discomfort caused by the direct airflow. The partition and the air guide plate are made by an integrated molding technology.

[0059] See also Figure 7 , Figure 7 This is a schematic structural diagram of an inner sleeve according to a specific embodiment of the present application.

[0060] like Figure 7 As shown, the inner sleeve 330 includes a loading ring frame 331, a plurality of groups of guide plates 332 and an outer shell 333. The loading ring frame 331 is located at one end of the outer shell 333 close to the air outlet 110. The loading ring frame 331 is a double-layer structure consisting of an inner ring and an outer ring. A bearing is arranged in the inner ring of the loading ring frame 331 to fix the shaft of the fan assembly 420, and the outer ring of the loading ring frame 331 is engaged with the outer shell of the fan assembly 420. The loading ring frame 331 and the outer shell 333 are connected through a plurality of groups of guide plates 332. The airflow generated by the fan assembly 420 leaves the inner sleeve 330 from the gap between the guide plates 332 and is blown out from the air outlet.

[0061] Several groups of guide plates 332 are bent at one end away from the air outlet 110, and the bending direction of one end of the multiple guide plates 332 is opposite to the rotation direction of the fan assembly 420. The bending direction of the guide plate 332 is opposite to the rotation direction of the fan assembly 420. When the fan assembly 420 rotates, it will drive the airflow to rotate in the same direction. At this time, the bending direction of the guide plate 332 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the guide plate 332. Due to the opposite directions, the angle between the airflow and the curved part of the guide plate 332 when they contact is greater than 90 degrees. The airflow contacts the guide plate 332 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the guide plate 332. During the contact process at a larger angle, the guide plate 332 has a significant guiding effect on the airflow, with little energy loss, which greatly improves the air outlet efficiency. The fan assembly 420 and the inner sleeve 330 used in this application are both existing technical means, and fan assemblies with other structural characteristics can also be arranged inside the flexible shell;

[0062] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not intended to be additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A portable fan, characterized in that: include: A main shell, wherein an air outlet is provided on the main shell, and a bottom plate is provided on a side of the main shell away from the air outlet, wherein a sieve hole for air intake is provided on the bottom plate; A first battery compartment cover and a second battery compartment cover, wherein the first battery compartment cover and the second battery compartment cover respectively wrap the side wall of the main housing to form a battery compartment; An air duct and an air chamber are provided inside the main shell body, and the air duct and the air chamber are connected to each other, and the air outlet is located on the side of the air duct away from the air chamber. A fan main unit is arranged in the air duct, and a first air inlet surface and a second air inlet surface are provided on the side wall of the air chamber. The first air inlet surface and the second air inlet surface cooperate with the bottom plate to form an air inlet, and under the rotation of the fan main unit, the air flow flows from the air inlet to the air outlet.

2. The portable fan according to claim 1, characterized in that: The first battery compartment cover and the second battery compartment cover are connected to the side wall of the main housing by snap-fitting; and / or, A lithium-ion battery with a soft-pack structure is placed in the battery compartment formed by the first battery compartment cover and the second battery compartment cover.

3. The portable fan according to claim 2, characterized in that: The main housing is also provided with an electronic compartment, in which a circuit module is arranged, and the circuit module is respectively connected to the lithium-ion battery and the fan host through lines; and / or, The electronic compartment is recessed inward from the main shell to form an independent open compartment structure, and line through holes connecting other compartments are provided at the corners of the electronic compartment. The lines connecting the circuit module with the lithium-ion battery and the fan host enter other compartments from the line through holes.

4. The portable fan according to claim 3, characterized in that: The circuit module is mainly composed of a circuit board and an outer cover. The circuit board adopts a control circuit board in the prior art. The circuit board is fixed to a screw hole provided in the electronic compartment by bolts, and / or, The outer cover is provided with a charging port, a power button and an indicator light, the circuit board is connected to the charging port, the power button and the indicator light through circuits respectively, and the outer cover as a whole is assembled on the electronic compartment by snap-fitting and nesting.

5. The portable fan according to claim 4, characterized in that: A circular through hole is provided between the air duct and the electronic compartment, and the air duct and the electronic compartment are connected to each other through the circular through hole; and / or, A cylindrical flexible shell is also provided inside the air duct, an inner sleeve is provided outside the fan main unit, and the fan main unit is assembled inside the flexible shell by nesting the inner sleeve.

6. The portable fan according to claim 5, characterized in that The outer surface of the flexible shell is raised to form a plurality of convex points, and the plurality of convex points are evenly arranged on the outer surface of the flexible shell. The outer surface of the flexible shell is in contact with and connected to the inner wall of the air guide duct.

7. The portable fan according to claim 6, characterized in that The air guide duct is provided with a partition and a plurality of groups of air guide plates, wherein the plurality of air guide plates are distributed in a circumferential annular array along the partition, and the air guide duct cooperates with the partition and the plurality of groups of air guide plates to form an air outlet; and / or, One end of the air guide plate is connected to the inner wall of the air guide pipe, and the other end of the air guide plate is connected to the partition plate.

8. The portable fan according to claim 7, characterized in that: The partition has an arc-shaped surface structure facing the inner side of the air guide duct. When the airflow blows out by the fan main unit, it will be blown toward the arc surface of the partition. Under the guidance of the arc surface, the airflow is dispersed to the air guide plates and leaves the air outlet along the gaps between the air guide plates.

9. The portable fan according to claim 8, characterized in that The first air inlet surface and the second air inlet surface are arranged on the side wall of the air chamber, and a plurality of groups of circular holes serving as air circulation channels are evenly distributed on the first air inlet surface and the second air inlet surface.

10. The portable fan according to claim 8, characterized in that The first air inlet surface and the second air inlet surface are arranged on non-adjacent planes of the main shell.

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