Handheld fan

Abstract

The handheld fan comprises a shell, a motor and two wind gathering structures, the shell comprises an air duct shell and a handle connected to the side portion of the air duct shell, the air duct shell is provided with an air inlet and an air outlet which are opposite to each other, and a circuit board and a battery connected with the circuit board are arranged in the handle; the motor is arranged in the air duct shell, fan blades are arranged on the motor, and the motor is electrically connected with the circuit board; the two air gathering structures are sequentially arranged at the air outlet, each air gathering structure comprises a fixed outer ring, a center part and a plurality of air guide blades connected between the fixed outer ring and the center part, and the multiple air guide blades are sequentially distributed in the circumferential direction of the center part at intervals; the air guide blades of one air gathering structure are obliquely arranged in the first circumferential direction, and the air guide blades of the other air gathering structure are obliquely arranged in the second circumferential direction opposite to the first circumferential direction. According to the technical scheme, the air outlet force can be increased, and the wind force of the handheld fan is maximized.

Description

Technical Field

[0001] The utility model relates to the field of air supply devices, in particular to a handheld fan. Background Art

[0002] With the improvement of people's living standards, many handheld fans have appeared on the market to facilitate people to cool down at any time when going out and to facilitate people to carry when going out. However, general handheld fans only have simple motors and fan blades. When used, the wind force is not concentrated, the wind force is small, and the actual use effect is not good. Utility Model Content

[0003] The main purpose of the utility model is to provide a handheld fan, aiming to increase the wind force of the wind.

[0004] To achieve the above object, the handheld fan proposed by the utility model comprises:

[0005] The housing comprises an air duct housing and a handle connected to the side of the air duct housing, wherein the air duct housing is provided with an air inlet and an air outlet opposite to each other, and the handle is provided with a circuit board and a battery connected to the circuit board;

[0006] a motor, disposed in the air duct housing, the motor being provided with fan blades, and the motor being electrically connected to the circuit board; and

[0007] Two wind gathering structures, the two wind gathering structures are arranged at the air outlet in sequence, each of the wind gathering structures includes a fixed outer ring, a central part and a plurality of wind guide blades connected between the fixed outer ring and the central part, the plurality of wind guide blades are distributed in sequence along the circumference of the central part, the wind guide blades of one of the wind gathering structures are arranged obliquely along a first circumferential direction, and the wind guide blades of the other wind gathering structure are arranged obliquely along an opposite second circumferential direction.

[0008] Optionally, among the two wind-gathering structures, the wind-guiding blades of the wind-gathering structure close to the fan blades are arranged obliquely along the first circumferential direction, and the first circumferential direction is opposite to the rotation direction of the fan blades.

[0009] Optionally, among the two wind-gathering structures, the wind-gathering structure close to the fan blades is the first wind-gathering structure, and the wind-gathering structure far from the fan blades is the second wind-gathering structure. The first wind-gathering structure is integrally formed with the air duct shell, and the second wind-gathering structure is separately formed with the air duct shell.

[0010] Optionally, the motor is fixed to the central portion of the first wind-collecting structure and is located on a side of the central portion facing the air inlet.

[0011] Optionally, the second wind-collecting structure further includes a raised portion, wherein the raised portion is located on a side of the central portion away from the fan blade, and an outer diameter of the raised portion gradually decreases in a direction away from the fan blade.

[0012] Optionally, the surface of the raised portion is a convex arc surface.

[0013] Optionally, the outer diameter of the central portion is not less than the outer diameter of the hub of the fan blade.

[0014] Optionally, the handheld fan further includes an air focusing nozzle, which is installed on a side of the two air focusing structures away from the fan blades and has an air guide hole corresponding to the air outlet, and an inner diameter of the air guide hole is gradually reduced in a direction away from the fan blades.

[0015] Optionally, the raised portion on the second wind-collecting structure at least partially extends into the wind-guiding hole.

[0016] Optionally, the circuit board is provided with a button assembly, and the button assembly is arranged on a side of the handle close to the air outlet.

[0017] Optionally, the wind gathering structure and the air duct shell are both made of plastic.

[0018] The technical solution of the utility model is to set two wind gathering structures at the air outlet of the handheld fan, and the wind guide blades of one of the wind gathering structures are set to be tilted along a first circumferential direction, and the wind guide blades of the other wind gathering structure are set to be tilted along an opposite second circumferential direction. In this way, after the fan blades introduce air from the air inlet, when passing through the two wind gathering structures, since the wind guiding directions of the two wind gathering structures are opposite, the two wind gathering structures can compress the outlet airflow, so that the outlet airflow is more concentrated and blown out more concentratedly after compression, effectively increasing the outlet wind force, so as to bring a cooler experience to the user. In addition, the outlet airflow can be used to blow away dust, accumulated snow, water stains, etc., opening up more usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the handheld fan of the utility model;

[0021] Figure 2 for Figure 1 Exploded view of a person holding a fan in the middle;

[0022] Figure 3 for Figure 1 Cross-sectional view of a handheld fan.

[0023] Description of Figure Numbers:

[0024] 10. Shell; 11. Handle; 12. Air duct shell; 121. Air duct front shell; 122. Air duct rear shell; 123. Air inlet; 124. Air outlet; 21. Motor; 22. Fan blades; 30. Wind gathering structure; 31. Fixed outer ring; 32. Center; 33. Wind guide blades; 34. Raised portion; 301. First wind gathering structure; 302. Second wind gathering structure; 40. Air gathering nozzle; 51. Battery; 52. Circuit board; 53. Charging port; 60. Button assembly.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] The utility model provides a handheld fan.

[0030] In the embodiment of the present utility model, Figures 1 to 3 As shown, the handheld fan includes a shell 10, a motor 21 and two wind gathering structures 30, the shell 10 includes an air duct shell 12 and a handle 11 connected to the side of the air duct shell 12, the air duct shell 12 is provided with a relative air inlet 123 and an air outlet 124, the handle 11 is provided with a circuit board 52 and a battery 51 connected to the circuit board 52; the motor 21 is arranged in the air duct shell 12, the motor 21 is provided with fan blades 22, and the motor 21 is electrically connected to the circuit board 52; the two wind gathering structures 30 are arranged at the air outlet 124 in sequence, each wind gathering structure 30 includes a fixed outer ring 31, a central part 32 and a plurality of wind guide blades 33 connected between the fixed outer ring 31 and the central part 32, the plurality of wind guide blades 33 are distributed in sequence along the circumference of the central part 32, the wind guide blades 33 of one wind gathering structure 30 are arranged obliquely along a first circumferential direction, and the wind guide blades 33 of the other wind gathering structure 30 are arranged obliquely along the opposite second circumferential direction.

[0031] Specifically, when two wind gathering structures 30 are sequentially arranged at the air outlet 124, that is, both wind gathering structures 30 are provided with air ducts, the air ducts of the two wind gathering structures 30 are sequentially connected along the air outlet direction, and when in use, the air outlet airflow sequentially passes through the air ducts of the two wind gathering structures 30 and is then delivered. Figure 2 direction indicated by arrow X) and the second circumferential direction (refer to Figure 2 The directions indicated by the middle arrow Y) are all directions around the rotation axis of the fan blade 22, and are in opposite directions. For example, at the same viewing angle, when the first circumferential direction is clockwise, the second circumferential direction is counterclockwise. If the first circumferential direction is counterclockwise, the second circumferential direction is clockwise.

[0032] The technical solution of the utility model is to set two wind gathering structures 30 at the air outlet 124 of the handheld fan, and the wind guide blades 33 of one of the wind gathering structures 30 are set to be tilted along the first circumferential direction, and the wind guide blades 33 of the other wind gathering structure 30 are set to be tilted along the opposite second circumferential direction. In this way, after the fan blades 22 introduce air from the air inlet 123, when passing through the two wind gathering structures 30, since the two wind gathering structures 30 have opposite wind guiding directions, the outlet airflow can be compressed by the two wind gathering structures 30, so that the outlet airflow is more concentrated and blown out more concentratedly after compression, effectively increasing the wind force of the outlet air, so as to bring a cooler experience to the user. In addition, the outlet airflow can be used to blow away dust, accumulated snow, water stains, etc., opening up more usage scenarios and making it easier for users to carry and use.

[0033] In some embodiments, of the two wind gathering structures 30, the wind guide blades 33 of the wind gathering structure 30 close to the fan blades 22 are tilted along a first circumferential direction, and the first circumferential direction is opposite to the rotation direction of the fan blades 22. In this way, the outgoing airflow is compressed between the fan blades 22 and the wind gathering structure 30 close to the fan blades 22, and then compressed again between the two wind gathering structures 30, further improving the compression effect of the outgoing airflow, thereby increasing the outgoing wind force.

[0034] For ease of explanation, the wind gathering structure 30 close to the fan blades 22 of the two wind gathering structures 30 is referred to as a first wind gathering structure 301 , and the wind gathering structure 30 far from the fan blades 22 is referred to as a second wind gathering structure 302 .

[0035] In some embodiments, the first wind gathering structure 301 is integrally formed with the air duct shell 12, and the second wind gathering structure 302 is separately formed with the air duct shell 12. In this way, the first wind gathering structure 301 and the air duct shell 12 are integrally formed, which can reduce the number of parts of the handheld fan, facilitate assembly, and also help to improve the compactness of the handheld fan structure and reduce the size of the handheld fan. Of course, in other embodiments, the first wind gathering structure 301 and the air duct shell 12 are separately formed and fixed by assembly.

[0036] Optionally, the air duct shell 12 includes a duct front shell 121 and a duct rear shell 122 that are spliced ​​together, and an air inlet 123 is provided on the side of the duct rear shell 122 away from the duct front shell 121, and the wind gathering structure 30 is provided on the side of the duct front shell 121 away from the duct rear shell 122, that is, the first wind gathering structure 301 is integrally formed with the duct front shell 121.

[0037] In some embodiments, the motor 21 is fixed to the central portion 32 of the first wind gathering structure 301 and is located on the side of the central portion 32 facing the air inlet 123. Using the central portion 32 of the first wind gathering structure 301 to install the motor 21 is beneficial to improving the compactness of the structure in the air duct housing 12 and reducing the size of the handheld fan.

[0038] In some embodiments, the second wind-collecting structure 302 further includes a protrusion 34, which is located on the side of the central portion 32 away from the blade 22, and the outer diameter of the protrusion 34 gradually decreases in the direction away from the blade 22. By arranging the protrusion 34 on the outside, the wind can be more focused, the wind flow can be compressed, the wind force can be increased, and the wind flow can be softened.

[0039] Optionally, the surface of the protrusion 34 is a convex arc surface. Specifically, the protrusion 34 is substantially ellipsoidal or spherical, which can better guide the airflow and improve the airflow compression effect. Of course, in other embodiments, the protrusion 34 can also be set to a cone shape.

[0040] In some embodiments, the outer diameter of the center portion 32 is not less than the outer diameter of the hub of the fan blade 22. In this way, the air duct area between the center portion 32 and the fixed outer ring 31 can be reduced, so that the air duct area between the center portion 32 and the fixed outer ring 31 is smaller than the area of ​​the air inlet 123, which can improve the compression effect of the outlet airflow and increase the outlet wind force.

[0041] In some embodiments, the handheld fan further includes an air collecting nozzle 40, which is installed on the side of the two air collecting structures 30 away from the fan blades 22 and has an air guide hole corresponding to the air outlet 124, and the inner diameter of the air guide hole is gradually reduced in the direction away from the fan blades 22. In this way, the air flow can be further compressed by the air collecting nozzle 40, and the wind force of the air can be further increased.

[0042] In some embodiments, the raised portion 34 on the second wind-collecting structure 302 at least partially extends into the air guide hole, so that the wind flow can be compressed by the cooperation of the wind-collecting nozzle 40 and the raised portion 34 to further increase the wind force.

[0043] In some embodiments, the circuit board 52 is provided with a button assembly 60, which is provided on the side of the handle 11 near the air outlet 124, so that it is convenient for the user to operate. Optionally, the button assembly 60 includes a power button and a wind speed adjustment button.

[0044] In some embodiments, the wind gathering structure 30 and the air duct shell 12 are both made of plastic, which facilitates the molding of the wind gathering structure 30 and the air duct shell 12 and can also reduce the weight of the handheld fan.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A handheld fan, characterized in that: include: The housing comprises an air duct housing and a handle connected to the side of the air duct housing, wherein the air duct housing is provided with an air inlet and an air outlet opposite to each other, and the handle is provided with a circuit board and a battery connected to the circuit board; a motor, disposed in the air duct housing, the motor being provided with fan blades, and the motor being electrically connected to the circuit board; and Two wind gathering structures, the two wind gathering structures are arranged at the air outlet in sequence, each of the wind gathering structures includes a fixed outer ring, a central part and a plurality of wind guide blades connected between the fixed outer ring and the central part, the plurality of wind guide blades are distributed in sequence along the circumference of the central part, the wind guide blades of one of the wind gathering structures are arranged obliquely along a first circumferential direction, and the wind guide blades of the other wind gathering structure are arranged obliquely along an opposite second circumferential direction.

2. The handheld fan according to claim 1, characterized in that: In the two wind gathering structures, the wind guide blades of the wind gathering structure close to the fan blades are arranged obliquely along the first circumferential direction, and the first circumferential direction is opposite to the rotation direction of the fan blades.

3. The handheld fan according to claim 1, characterized in that: Of the two wind-gathering structures, the wind-gathering structure close to the fan blades is the first wind-gathering structure, and the wind-gathering structure away from the fan blades is the second wind-gathering structure. The first wind-gathering structure is integrally formed with the air duct shell, and the second wind-gathering structure is separately formed with the air duct shell.

4. The handheld fan according to claim 3, characterized in that: The motor is fixed to the central portion of the first wind gathering structure and is located on a side of the central portion facing the air inlet.

5. The handheld fan according to claim 3, characterized in that: The second wind-collecting structure further includes a raised portion, which is located on a side of the central portion away from the fan blades, and an outer diameter of the raised portion gradually decreases in a direction away from the fan blades.

6. The handheld fan according to claim 5, characterized in that: The surface of the raised portion is a convex arc surface.

7. The handheld fan according to claim 1, characterized in that: The outer diameter of the central portion is not less than the outer diameter of the hub of the fan blade.

8. The handheld fan according to claim 3, characterized in that: The handheld fan also includes an air collecting nozzle, which is installed on a side of the two air collecting structures away from the fan blades and has an air guide hole corresponding to the air outlet, and the inner diameter of the air guide hole is gradually reduced in the direction away from the fan blades.

9. The handheld fan according to claim 8, characterized in that: The protrusion on the second wind gathering structure at least partially extends into the wind guiding hole.

10. The handheld fan according to any one of claims 1 to 7, characterized in that: The circuit board is provided with a button assembly, and the button assembly is arranged on a side of the handle close to the air outlet; The wind gathering structure and the air duct shell are both made of plastic.

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