Handheld fan

Abstract

The utility model discloses a handheld fan, and relates to the technical field of handheld fans. The handheld fan comprises a handheld fan body and is characterized in that the handheld fan body is arranged in a bent pipe shape, and the bent position is in arc transition; the handheld fan comprises a fan part and a handheld part, the fan part is used for supplying air, and the side circumferential face of one end of the fan part and the side circumferential face of one end of the handheld part are connected and in smooth transition. A wind shield is arranged on the fan part or the handheld part and used for preventing airflow in the fan part from entering the handheld part. According to the handheld fan adopting the technical scheme, the whole tubular fan is divided into the two cavities through the wind shield, and the fan assembly is arranged in the cavity close to the air outlet, so that the handheld fan has the advantages that the length of an air duct is shortened, and the airflow velocity is increased.

Description

Technical Field

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

[0002] In the hot summer, in people's daily life, when working, studying or entertaining in front of the computer indoors, air conditioning is one of the tools to escape the heat. In addition to air conditioning, portable handheld fans are also commonly used tools to escape the heat in people's daily life. Handheld fans, as the name suggests, are to be held by hand, and have the advantages of being easy to carry and simple to operate.

[0003] There is a handheld fan which is arranged in an inverted L-shaped tube shape, with a longer end for the user to hold and an air inlet at the bottom, and an air outlet at the shorter end for air to blow out. The fan assembly is arranged at the longer end, and the fan assembly can suck the air from the air inlet, and blow it out from the air outlet after passing through the entire L-shaped tube structure, so as to realize the blowing process of the handheld fan. However, the air duct of the handheld fan designed in this way is too long, which affects the air flow speed and easily forms turbulence. Utility Model Content

[0004] The purpose of the utility model is to provide a handheld fan in view of the defects and shortcomings of the prior art, which uses a wind shield to divide the entire tubular fan into two chambers, and arranges a fan assembly in the chamber near the air outlet, thereby shortening the length of the air duct and improving the air flow rate.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a handheld fan, which is arranged in a curved tubular shape, and the curved part has an arc-shaped transition; the handheld fan comprises a fan part and a handheld part, the fan part is used for supplying air, and the side circumference of one end of the fan part is connected to the side circumference of one end of the handheld part and smoothly transitions; a wind shield is arranged on the fan part or the handheld part, and the wind shield is used to block the airflow in the fan part from entering the handheld part.

[0006] Preferably, the bending portion is arranged on the fan portion and close to the hand-held portion, and the wind shield is arranged at the bending portion.

[0007] Preferably, the fan portion provided with the bending portion forms an elbow structure, and the hand-held portion is a straight tube structure.

[0008] Preferably, the bending angle of the elbow structure is 90°-120°, and the fan part is arranged in an inverted L shape after being connected to the handheld part.

[0009] Preferably, the fan part has an air inlet and an air outlet. An air flow channel is formed between the air inlet and the air outlet. A fan assembly is arranged in the air flow channel. The fan assembly is used to suck air flow from the air inlet and blow the air flow out from the air outlet.

[0010] Preferably, a wind guide cover is further arranged on one side of the air flow channel close to the air outlet. The wind guide cover has a cover body for installing the fan assembly and a housing that fits the inner wall surface of the air flow channel. An air flow combing opening is formed between the inner wall surface of the housing and the outer wall surface of the cover body. The air flow at the air outlet passes through the air flow combing opening.

[0011] Preferably, the inner wall surface of the housing and the outer wall surface of the cover body are connected by a plurality of grids. The grids divide the air flow combing opening into a plurality of parts.

[0012] Preferably, a control circuit board and a battery coupled to the control circuit board are arranged in the handheld part. A wire groove is formed on the wind guide cover. A through hole is formed at the position where the air flow channel fits the wind guide cover. The through hole and the wire groove are arranged correspondingly. The wire groove and the through hole cooperate to enable the fan assembly to be coupled to the control circuit board through a wire.

[0013] Preferably, the wire groove is a hollow structure of one of the grids. Both ends of the hollow structure penetrate the inner wall surface of the cover body and the outer wall surface of the housing.

[0014] Preferably, a guiding structure is arranged between the outer wall surface of the housing and the inner wall surface of the air flow channel. The communication part of the through hole and the wire groove is located in the guiding structure.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: The handheld fan includes a fan part and a handheld part. The handheld part can be held by a user. The fan part is used for blowing air. The side peripheral surface of one end of the fan part is connected to the side peripheral surface of one end of the handheld part, and the connection part has a smooth transition. The whole handheld fan is arranged in a bent tubular shape, and the bent part has an arc transition to form an inverted L-shaped handheld fan, with a beautiful appearance. A wind shield is arranged on the fan part or the handheld part. The wind shield can combine the air flow in the fan part to enter the handheld part, reduce the air flow turbulence phenomenon in the fan part, and improve the air supply efficiency. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is corresponding to Figure 1 exploded view;

[0019] Figure 3 is corresponding to Figure 2 schematic view of another perspective of the partial structure;

[0020] Figure 4 is a schematic structural view of the air guide cover of the present utility model;

[0021] Figure 5 is an exploded view of the partial structure of the present utility model.

[0022] Explanation of reference numerals in the drawings: 1. Handheld part; 11. Inner shell; 12. First clamping block; 2. Fan part; 21. Air inlet; 22. First clamping groove; 23. Second clamping block; 24. Guide groove; 25. Through hole; 26. Windshield; 3. Air guide cover; 31. Cover body; 311. Outer installation groove; 312. Inner installation groove; 313. Grille; 32. Installation post; 33. Guide edge; 34. Wiring groove; 35. Second clamping groove; 4. Fan assembly; 41. Fan head; 42. Rotor; 43. Stator; 44. Display screen; 45. Cover body; 5. Support seat; 6. Battery; 7. Button; 8. Control circuit board. Detailed implementation manners

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the Patent Law.

[0025] This embodiment relates to a handheld fan. As Figure 1 and Figure 2 shown, this handheld fan includes a fan part 2 and a handheld part 1 connected to one end of the fan part 2. The handheld part 1 is for the user to hold. A battery 6 and a control circuit board 8 coupled to the battery 6 are arranged in the handheld part 1. A button 7 is also arranged on the control circuit board 8. The fan part 2 is provided with a fan assembly 4 capable of blowing out air flow, and the fan assembly 4 is also coupled to the control circuit board 8. The user can press the button 7 to control the on / off and gear size of the fan through the control circuit board 8. At the same time, an exposed charging port is also arranged on the handheld part 1. The charging port is coupled to the control circuit board 8, and the battery 6 is a rechargeable battery 6. The user externally connects a power source to the battery 6 through the charging port to charge the battery 6.

[0026] Preferably, the side circumferential surface at one end of the handheld part 1 is connected to the side circumferential surface at one end of the handheld part 1, and the connection part has a smooth transition. The handheld fan is arranged in a bent tubular shape, and the bent part has an arc transition. In this embodiment, the bent part is arranged on the fan part 2 and is close to the handheld part 1. In other embodiments, the bent part can be arranged at the connection position between the fan part 2 and the handheld part 1, or the bent part can be arranged on the handheld part 1.

[0027] It should be added that both the fan part 2 and the handheld part 1 are arranged in a pipe shape. Since the bent part is arranged on the fan part 2, the handheld part 1 is a straight pipe structure at this time, and the fan part 2 is an elbow structure. In other embodiments, when the bent part is arranged at the connection position between the fan part 2 and the handheld part 1, both the handheld part 1 and the fan part 2 are elbow structures; or when the bent part is arranged on the handheld part 1, the handheld part 1 is an elbow structure, while the fan part 2 is a straight pipe structure.

[0028] Preferably, the bending angle of the elbow structure of the fan part 2 is 90°. Both ends of the elbow structure are open. The diameter of the opening close to the handheld part 1 is equal to the diameter of the fan part 2. After the handheld part 1 and the fan part 2 are connected, the whole handheld fan is arranged in an inverted L shape. In this embodiment, the diameters of the openings at both ends of the elbow structure are equal.

[0029] In other embodiments, the bending angle of the elbow structure is 100°, 110° or 120°. In some embodiments, the elbow structure is a variable-diameter elbow structure. The diameter of the opening of the elbow structure close to the handheld part 1 is larger than the diameter of the opening far from the handheld part 1, which can make the airflow blown out by the fan part 2 more concentrated and faster; on the contrary, when the diameter of the opening of the variable-diameter elbow structure close to the handheld part 1 is smaller than the diameter of the opening far from the handheld part 1, the airflow blown out by the fan can be more dispersed and slower.

[0030] Preferably, the opening at one end of the fan part 2 far from the handheld part 1 is the air outlet, and the air inlet 21 is arranged on one side of the bent part of the fan part 2 close to the outer corner. Therefore, the air inlet 21 and the air outlet are arranged parallel to each other in the horizontal direction, so as to improve the air inlet and air outlet efficiency; an air flow channel is formed between the air inlet 21 and the air outlet, and a fan assembly 4 is arranged in the fan part 2. When the fan assembly 4 is working, it can suck the air flow from the air inlet 21 and blow it out from the air outlet after being accelerated through the air flow channel.

[0031] As Figure 5 shown, a wind shield 26 is arranged at one end of the fan part 2 close to the handheld part 1. The wind shield 26 can separate the fan part 2 and the handheld part 1 in the connected state into two chambers, so as to prevent the air flow in the fan part 2 from entering the handheld part 1, reduce the air flow turbulence phenomenon, and thus improve the air supply efficiency of the fan assembly 4.

[0032] Preferably, the shape of the wind deflector 26 is adapted to the inner wall of the fan part 2. Specifically, the wind deflector 26 is arranged in an arc shape, and the bending radian is adapted to the inner wall surface of the air flow channel, so that the air flow channel forms a cylindrical inner side surface, further reducing the air flow turbulence phenomenon, increasing the air flow velocity, and also reducing the noise.

[0033] Preferably, the fan assembly 4 includes a fan head 41, a stator 43 and a rotor 42 of the motor. The fan head 41 has a hub and a plurality of fan blades, and the fan blades are evenly distributed at equal intervals along the circumference of the hub. At least part of the diameter of the hub gradually increases from the air inlet 21 to the air outlet direction to form a hub similar to a funnel shape, so that the air flow can form a high-pressure air flow when passing through the hub, thereby further increasing the air flow velocity.

[0034] It should be added that an installation hole is provided on one side of the hub of the fan head 41 close to the air outlet, and the rotor 42 of the motor is attached to the side wall of the installation hole. Thus, when the motor is powered on, the hub of the fan head 41 can be driven to rotate by the rotor 42, and the rotation of the hub drives the fan blades to rotate to generate an air flow.

[0035] As Figure 3 and Figure 4 shown, a wind guide cover 3 is also provided at the air outlet. The wind guide cover 3 can comb the air flow blown out of the air outlet and reduce the air flow noise. The wind guide cover 3 has a cover body 31 and a housing. The housing is arranged in a cylindrical shape, and the cover body 31 is arranged in the housing, and the central axis of the cover body 31 in the axial direction coincides with the central axis of the housing in the axial direction, so that the air flow is blown out more evenly.

[0036] It should be added that the outer wall surface of the housing fits with the inner wall surface of the air flow channel, and an air flow combing port is formed between the inner wall surface of the housing and the cover body 31, so that the air flow at the air outlet can pass through the combing of the air flow combing port. It should be added that the inner side surface of the housing and the outer side surface of the cover body 31 are connected by a plurality of grilles 313, and the grilles 313 can further comb the air flow.

[0037] Preferably, an outer installation groove 311 is provided on one side of the cover body 31 facing the air outlet, and an inner installation groove 312 is provided on one side of the cover body 31 close to the air inlet 21. It can be understood that a layer of baffle is provided between the inner installation groove 312 and the outer installation groove 311. An installation post 32 is provided on the inner installation groove 312, and the installation post 32 can be used for installing the stator 43 of the motor. A display screen 44 is provided on the outer installation groove 311, and the display screen 44 can display the gear information or power information of this handheld fan, etc. A transparent cover body 45 can be installed on the outer installation groove 311, and the cover body 45 can cover the display screen 44 to protect the display screen 44.

[0038] It should be added that a wire groove 34 is provided on the air guide cover 3, and a through hole 25 is provided at a position where the air flow channel abuts against the air guide cover 3. The through hole 25 is arranged in such a way that it can reduce the air flow in the air flow channel from entering the hand-held part 1 through the through hole 25. The through hole 25 and the wire groove 34 are arranged corresponding to each other. The wire groove 34 can cooperate with the through hole 25 to couple the fan assembly 4 and the display screen 44 to the control circuit board 8 through wires, so that the user can press the button 7 to control the fan assembly 4 and the display screen 44 through the control circuit board 8. The control contents include adjusting the wind speed and switching on / off of the fan assembly 4, and also include switching the display information of the display screen 44 or controlling the lighting and extinguishing of the display screen 44. The battery 6 can supply power to the display screen 44 and the fan assembly 4 through the control circuit board 8.

[0039] Specifically, the wire groove 34 is the hollow structure of one of the grilles 313. This hollow structure can penetrate the inner side surface of the cover body 31 and the outer side surface of the housing. The wires of the electronic components in the inner installation groove 312 and the outer installation groove 311 all pass through the wire groove 34 and are coupled to the control circuit board 8. The wire groove is specifically opened at the bottom of the baffle between the inner installation groove 312 and the outer installation groove 311.

[0040] Preferably, a guiding structure is provided between the outer wall surface of the housing and the inner wall surface of the air flow channel. The guiding structure can facilitate the alignment of the through hole 25 and the wire groove 34 when the air guide cover 3 is installed. Therefore, the connection part of the through hole 25 and the wire groove 34 is located within the guiding structure.

[0041] Specifically, the guiding structure includes guiding edges 33 provided on the outer wall surface of the air guide cover 3. There are two guiding edges 33. The two guiding edges 33 extend along the length direction of the air guide cover 3 and are arranged in parallel. The wire groove 34 is opened between the two guiding edges 33. The guiding structure also includes a guiding groove 24 provided in the air flow channel. The width of the guiding groove 24 matches the distance between the two guiding edges 33, so that the two guiding edges 33 can stably slide into the guiding groove 24. The through hole 25 is arranged at a position corresponding to the wire groove 34 in the guiding groove 24. The guiding edges 33 and the guiding groove 24 arranged in this way can reduce the air flow in the air flow channel from entering the hand-held part 1 through the through hole 25.

[0042] Preferably, the handle part has two layers of housing, including an outer shell for the user to hold and an inner shell 11 attached to the inner wall of the outer shell. A plurality of first clamping blocks 12 are provided on the outer wall surface of the inner shell 11 close to the fan part 2. A plurality of first clamping grooves 22 corresponding to the first clamping blocks 12 are provided on the fan part 2 close to the inner shell 11 to realize the connection between the inner shell 11 and the fan part 2.

[0043] It should be added that a plurality of second clamping blocks 23 are provided on the inner side surface of the air outlet, and a plurality of second clamping grooves 35 corresponding to the second clamping blocks 23 are provided on the outer side surface of the air guide cover 3, so that the air guide cover 3 can be clamped and assembled with the fan part 2. In this embodiment, a foam is filled between the outer side surface of the air guide cover 3 and the inner side surface of the air outlet to reduce the vibration noise generated between the air guide cover 3 and the fan part 2 when the fan assembly 4 rotates.

[0044] Preferably, a mounting seat can also be provided at the bottom of the handle part. The bottom of the mounting seat is in a sheet shape, and the top has a groove for the bottom of the handle part to be inserted. After the bottom of the handle part is inserted into the groove of the mounting seat, the entire handheld fan can be placed upright.

[0045] The above is only used to illustrate the technical solution of the present invention and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A handheld fan, characterized in that: The handheld fan is arranged in a curved tubular shape, and the curved portion thereof is in an arc-shaped transition; The handheld fan comprises a fan part and a handheld part, the fan part is used for blowing air, and the side circumference of one end of the fan part is connected to the side circumference of one end of the handheld part and smoothly transitions; The fan part or the hand-held part is provided with a wind shield, and the wind shield is used to block the airflow in the fan part from entering the hand-held part.

2. The handheld fan according to claim 1, characterized in that: The bending part is arranged on the fan part and close to the hand-held part, and the windshield is arranged at the bending part.

3. The handheld fan according to claim 2, characterized in that: The fan portion provided with the bending portion forms an elbow structure, and the hand-held portion is a straight tube structure.

4. The handheld fan according to claim 3, characterized in that: The bending angle of the elbow structure is 90°-120°, and the fan part is arranged in an inverted L shape after being connected to the handheld part.

5. The handheld fan according to claim 1, characterized in that: The fan unit has an air inlet and an air outlet, an air flow channel is formed between the air inlet and the air outlet, a fan assembly is arranged in the air flow channel, and the fan assembly is used to suck the air flow from the air inlet and blow the air flow out from the air outlet.

6. The handheld fan according to claim 5, characterized in that: An air guide cover is also provided on one side of the air flow channel close to the air outlet, and the air guide cover comprises a cover body for mounting the fan assembly and a shell body that fits the inner wall surface of the air flow channel; An airflow combing opening is formed between the inner wall surface of the shell and the outer wall surface of the cover body, and the airflow of the air outlet passes through the airflow combing opening.

7. The handheld fan according to claim 6, characterized in that: The inner wall surface of the shell and the outer wall surface of the cover body are connected through a plurality of grilles, and the grilles divide the airflow combing opening into a plurality of openings.

8. The handheld fan according to claim 7, characterized in that: The handheld part is provided with a control circuit board and a battery coupled to the control circuit board; The wind guide cover is provided with a wiring groove, and the air flow channel is provided with a through hole at the joint with the wind guide cover. The through hole is arranged corresponding to the wiring groove, and the wiring groove cooperates with the through hole to allow the fan assembly to be coupled to the control circuit board through a wire.

9. The handheld fan according to claim 8, characterized in that: The wiring trough is a hollow structure of one of the grilles, and two ends of the hollow structure penetrate the inner wall surface of the cover body and the outer wall surface of the shell.

10. The handheld fan according to claim 9, characterized in that: A guide structure is provided between the outer wall surface of the shell and the inner wall surface of the airflow channel, and the connecting point between the through hole and the wiring groove is located in the guide structure.

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