Handheld fan

Abstract

A handheld fan relates to the technical field of fans and comprises a fan unit and a holding unit. The fan unit comprises a fan barrel, and a first air guide structure, a second air guide structure and a fan assembly are arranged in the fan barrel; the first air guide structure comprises a plurality of first air guide blades, and the first air guide blades rotate clockwise or anticlockwise; the second air guide structure is arranged on the downstream of the first air guide structure, the second air guide structure comprises a plurality of second air guide blades, and the rotating direction of the second air guide blades is opposite to that of the first air guide blades; the fan assembly comprises a fan base, a plurality of fan blades are fixedly arranged on the periphery of the fan base, and the rotating direction of the fan blades is opposite to the rotating direction of the first air guide blades. The holding unit comprises a holding shell, and one side of the top of the holding shell is hinged to the fan barrel. And a position-adjustable hook is mounted at the bottom of the holding shell. The air outlet rate can be increased, and noise can be reduced; and meanwhile, the air outlet direction can be freely adjusted, and the use experience is improved.

Description

Technical Field

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

[0002] Handheld fans, a must-have for cooling off in the summer, have gained widespread popularity thanks to their convenience and efficiency. On scorching summer days, these small fans, with their carefully designed fan modules, provide users with a powerful yet cooling breeze. Not only are they compact and lightweight, they are also extremely portable, whether stowed in a backpack or held by hand, making them easy to use for a variety of travel needs. Consequently, handheld fans have become an indispensable part of modern life, particularly popular with consumers who value quality and practicality. With their presence, cooling is no longer confined to the home; it can be carried with you and enjoyed at any time.

[0003] In order to increase the air output speed, most current handheld fans are equipped with larger fan blades as much as possible, but this requires increasing the power of the motor to drive the fan blades to rotate, which means that the noise will increase and affect normal use. At the same time, in traditional handheld fans, the fan unit and the grip unit are fixedly connected, and the air output direction cannot be adjusted. The user can only adjust the air output direction of the fan unit by changing the angle of his or her wrist. This requires the user to keep the wrist in a fixed position all the time, which is tiring and reduces the user experience. Utility Model Content

[0004] In view of this, the technical problem to be solved by the present invention is to provide a handheld fan that can increase the air outlet speed and reduce noise; at the same time, the air outlet direction can be freely adjusted to improve the user experience.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A handheld fan, comprising a fan unit and a grip unit connected thereto;

[0007] The fan unit includes a fan cylinder, wherein a first air guide structure, a second air guide structure, and a fan assembly are coaxially arranged inside the fan cylinder; the second air guide structure and the fan assembly are respectively arranged on both sides of the first air guide structure, and the air outlet direction of the fan assembly is from the first air guide structure to the second air guide structure;

[0008] The first air guide structure includes a plurality of first air guide blades, and the plurality of first air guide blades rotate clockwise or counterclockwise toward a side close to the fan cylinder;

[0009] The second air guide structure is arranged downstream of the first air guide structure along the air flow direction, and the second air guide structure includes a plurality of second air guide blades arranged in a rotational direction, and the rotation direction of the second air guide blades is opposite to that of the first air guide blades;

[0010] The fan assembly includes a fan base driven by a power member, and a plurality of rotatable fan blades are fixedly provided on the outer periphery of the fan base, wherein the rotation direction of the fan blades is opposite to the rotation direction of the first air guide blades;

[0011] The holding unit includes a holding shell, one side of the top of the holding shell is hinged to the fan cylinder, and the fan cylinder can rotate back and forth toward one side of the holding shell; a position-adjustable hook is installed at the bottom of the holding shell.

[0012] Preferably, the first air guide structure includes a first air guide seat coaxially arranged with the fan cylinder, the first air guide blades are fixed between the first air guide seat and the fan cylinder, and a plurality of the first air guide blades are equidistantly arranged axially around the first air guide seat.

[0013] Preferably, the second air guide structure includes a second air guide seat, which is fixed on the first air guide seat and located downstream thereof along the airflow direction;

[0014] A coaxially arranged connecting sleeve is provided on the outer side of the second air guide seat, and the second air guide blade is fixedly arranged between the second air guide seat and the connecting sleeve.

[0015] Preferably, the second air guide seat is a hollow structure, and a support cover is installed at one end of the second air guide seat, and the support cover is arranged close to the first air guide seat;

[0016] The second air guide blades include main air guide blades and auxiliary air guide blades, and the main air guide blades and the auxiliary air guide blades are arranged alternately; a plurality of rotatable support blades are mounted on the support cover plate, and the positions and numbers of the support blades correspond to those of the auxiliary air guide blades one by one, and the support blades abut against the auxiliary air guide blades;

[0017] A guard plate is installed at the other end of the second air guide seat.

[0018] Preferably, an air outlet cover is installed at the air outlet end of the fan cylinder, and the connecting sleeve is snap-connected to the air outlet cover and is located inside the fan cylinder.

[0019] Preferably, an air inlet cover is installed at the air inlet end of the fan cylinder, and a plurality of air inlet grilles are arranged inside the air inlet cover, and the plurality of air inlet grilles are arranged at equal intervals along the circumference of the fan cylinder.

[0020] Preferably, the number of the fan blades is smaller than the number of the first wind guide blades, and the number of the first wind guide blades is smaller than the number of the second wind guide blades.

[0021] Preferably, the grip shell includes a left half shell and a right half shell that are buckled together, the tops of the left half shell and the right half shell are both configured to be arc-shaped, and the left half shell is hinged to the fan cylinder.

[0022] Preferably, both sides of the bottom of the grip shell are provided with sliding grooves adapted to the hooks, and the inner walls of the sliding grooves are provided with limiting protrusions.

[0023] Preferably, the hook comprises two connecting rods arranged opposite to each other, the inner side of the connecting rods is provided with a connecting boss adapted to the slide groove, and the connecting boss is provided on the top of the connecting rod and has a T-shaped structure;

[0024] The bottoms of the two connecting rods are fixed with hook bodies.

[0025] After adopting the above technical solution, the beneficial effects of the utility model are:

[0026] The handheld fan of the present application includes a fan unit and a gripping unit connected thereto; the fan unit is used to discharge air, and the gripping unit is used to hold the fan for easy handling. The fan unit includes a fan cylinder, the interior of which is provided with a first air guide structure, a second air guide structure, and a fan assembly coaxially arranged therewith; the second air guide structure and the fan assembly are provided on either side of the first air guide structure, and the air discharge direction of the fan assembly is from the first air guide structure to the second air guide structure; the airflow discharged by the fan assembly can be diverted and directed by the first air guide structure and the second air guide structure in sequence, thereby changing the direction of the airflow, thereby increasing the air discharge rate and reducing the air discharge noise.

[0027] Specifically, the first air guide structure includes a plurality of first air guide blades, and the plurality of first air guide blades rotate clockwise or counterclockwise toward the side close to the fan cylinder; the second air guide structure is arranged downstream of the first air guide structure along the air flow direction, and the second air guide structure includes a plurality of rotationally arranged second air guide blades, and the rotation direction of the second air guide blades is opposite to that of the first air guide blades; the fan assembly includes a fan seat driven by a power part, and a plurality of rotationally arranged fan blades are fixed on the outer periphery of the fan seat, and the rotation direction of the fan blades is opposite to that of the first air guide blades; when the fan blades are driven to rotate to generate airflow, the generated airflow will first pass through the first air guide blades. Since the rotation direction of the fan blades is opposite to that of the first air guide blades and the first air guide blades are rotationally arranged, the airflow will be cut and redirected. This design can enhance the rectification effect of the airflow and make the airflow more orderly, thereby reducing the turbulence and vortex of the airflow in the fan cylinder, thereby reducing noise and increasing the air outlet rate.

[0028] When the air flow passes through the first air guide blade and enters the second air guide blade, since the rotation direction of the second air guide blade is opposite to that of the first air guide blade, the air flow is cut and redirected again when passing through the second air guide blade, making it more orderly and concentrated, further improving the air outlet efficiency, optimizing the dynamic characteristics of the air flow, and making the air flow smoother when passing through the second air guide blade, reducing energy loss; moreover, the orderly air flow helps to reduce turbulence and eddy currents, thereby further reducing noise and improving the user experience.

[0029] The grip unit includes a grip housing, the top side of which is hingedly connected to the fan barrel, allowing the fan barrel to rotate back and forth toward one side of the grip housing. An adjustable hook is mounted on the bottom of the grip housing. During use, the user can adjust the angle between the fan barrel and the grip housing to change the direction of the handheld fan's airflow. This allows the user to adjust the fan unit's airflow direction without having to adjust their wrist angle, saving effort and improving the user experience. Furthermore, the hook allows the handheld fan to be hung anywhere, eliminating the need to hold it in hand, expanding its range of uses and enhancing its effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a structural diagram of a handheld fan according to an embodiment of the present utility model;

[0032] Figure 2 yes Figure 1 Exploded diagram;

[0033] Figure 3 This is an exploded view of the handheld fan according to the embodiment of the present invention from another direction;

[0034] Figure 4 yes Figure 2 Exploded view of the second wind guide structure;

[0035] Figure 5 yes Figure 3 A magnified view of part A in FIG;

[0036] In the picture:

[0037] 1. Fan unit;

[0038] 2. Grip unit;

[0039] 3. Fan cylinder; 31. Air outlet cover; 32. Air inlet cover; 33. Air inlet grille;

[0040] 4. First air guide structure; 41. First air guide blade; 42. First air guide seat;

[0041] 5. Second air guide structure; 51. Second air guide blade; 511. Main air guide blade; 512. Auxiliary air guide blade; 52. Second air guide seat; 53. Connecting sleeve; 54. Support cover; 55. Support blade; 56. Guard plate;

[0042] 6. Fan assembly; 61. Fan seat; 62. Fan blades;

[0043] 7. Grip housing; 71. Left half housing; 72. Right half housing; 73. Slide groove; 74. Limiting protrusion;

[0044] 8. Hook; 81. Connecting rod; 82. Connecting boss; 83. Hook body. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] like Figures 1 to 5 As shown together, the present invention includes a fan unit 1 and a grip unit 2 connected thereto; the fan unit 1 is used to discharge air, and the grip unit 2 is used for holding it for easy handling. The fan unit 1 includes a fan barrel 3, the interior of which is provided with a first air guide structure 4, a second air guide structure 5, and a fan assembly 6 coaxially arranged therewith; the second air guide structure 5 and the fan assembly 6 are arranged on either side of the first air guide structure 4, and the air discharge direction of the fan assembly 6 is from the first air guide structure 4 to the second air guide structure 5; the air flow discharged by the fan assembly 6 can be diverted and directed by the first air guide structure 4 and the second air guide structure 5 in turn, thereby changing the direction of the air flow, thereby increasing the air discharge rate and reducing the air discharge noise.

[0047] Specifically, the first wind guide structure 4 includes a plurality of first wind guide blades 41, and the plurality of first wind guide blades 41 rotate clockwise or counterclockwise toward the side close to the fan cylinder 3; the second wind guide structure 5 is arranged downstream of the first wind guide structure 4 along the airflow direction, and the second wind guide structure 5 includes a plurality of rotatably arranged second wind guide blades 51, and the rotation direction of the second wind guide blades 51 is opposite to that of the first wind guide blades 41; the fan assembly 6 includes a fan seat 61 driven by a power part (not shown in the figure), and a plurality of rotatably arranged fan blades 62 are fixedly provided on the outer periphery of the fan seat 61, and the rotation direction of the fan blades 62 is opposite to that of the first wind guide blades 41.

[0048] In the present application, the power component is a motor, which is mounted on the first air-guiding structure 4, and the fan seat 61 is sleeved on the power component. The structure is compact, space-saving, and easy to install and maintain. The power component directly drives the fan seat 61, which reduces the transmission links, improves the force transmission efficiency, and thus improves the overall efficiency of the fan assembly 6. The fan blades 62 are spaced apart on the peripheral wall of the fan seat 61 to ensure uniform distribution and uniform flow of airflow, reduce mutual interference of airflow between the fan blades 62, and improve the output efficiency of wind power. The motor generally includes a stator and a rotor. The fan seat 61 is sleeved on the rotor. When the rotor rotates, it drives the fan seat 61 to rotate. The specific setting of the motor can adopt conventional technology, which will not be repeated here.

[0049] When the fan blades 62 are driven to rotate and generate airflow, the generated airflow will first pass through the first air guide blade 41. Since the rotation direction of the fan blades 62 is opposite to the rotation direction of the first air guide blade 41 and the first air guide blade 41 is a rotating setting, the airflow will be cut and redirected. This design can enhance the rectification effect of the airflow and make the airflow more orderly, thereby reducing the turbulence and eddy current of the airflow in the fan barrel 3, thereby reducing noise and increasing the air outlet rate.

[0050] The grip unit 2 includes a grip housing 7, the top side of which is hingedly connected to the fan barrel 3, allowing the fan barrel 3 to reciprocate toward one side of the grip housing 7. An adjustable hook 8 is mounted on the bottom of the grip housing 7. When using the handheld fan, the user can adjust the angle between the fan barrel 3 and the grip housing 7 to change the direction of the handheld fan's airflow. This allows the user to adjust the airflow direction of the fan unit 1 without having to adjust the angle of their wrist, saving effort and improving the user experience. Furthermore, the hook 8 allows the handheld fan to be hung anywhere, eliminating the need to hold it in hand, expanding its scope of use and enhancing its effectiveness.

[0051] Preferably, the first air guide structure 4 includes a first air guide seat 42 coaxially arranged with the fan cylinder 3. First air guide blades 41 are fixedly disposed between the first air guide seat 42 and the fan cylinder 3. A plurality of first air guide blades 41 are equidistantly arranged axially around the first air guide seat 42. The power element is mounted on the first air guide seat 42. Preferably, the fan cylinder 3, the first air guide blades 41, and the first air guide seat 42 are integrally formed to enhance the overall strength of the first air guide structure 4.

[0052] The second air guide structure 5 includes a second air guide seat 52, which is fixed to the first air guide seat 42 and located downstream thereof in the airflow direction. A coaxial connecting sleeve 53 is provided on the outer side of the second air guide seat 52, and a second air guide blade 51 is fixed between the second air guide seat 52 and the connecting sleeve 53. The second air guide seat 52 is detachably connected to the first air guide seat 42, preferably by screws.

[0053] The second air guide seat 52 is a hollow structure, and a support cover plate 54 is installed at one end of the second air guide seat 52, and the support cover plate 54 is arranged close to the first air guide seat 42; the second air guide blades 51 include a main air guide blade 511 and an auxiliary air guide blade 512, and the main air guide blades 511 and the auxiliary air guide blades 512 are arranged alternately; a number of rotatably arranged support blades 55 are installed on the support cover plate 54, and the support blades 55 correspond to the position and number of the auxiliary air guide blades 512 one by one, and the support blades 55 abut against the auxiliary air guide blades 512; by installing the support cover plate 54 at one end of the second air guide seat 52, the support cover plate 54 can block the interior of the second air guide seat 52 to prevent airflow from passing through its interior and maintain the direction of airflow. At the same time, a circuit board can be installed on the side of the support cover plate 54 away from the fan assembly 6 to meet other installation requirements. Meanwhile, support blades 55 are mounted on the support cover 54. These blades support the secondary air guide blades 512, thereby increasing the overall strength of the second air guide blades 51 and improving the airflow's rectification capabilities, resulting in a more orderly airflow. A protective plate 56 is mounted on the other end of the second air guide seat 52. Preferably, a display screen is mounted on the support cover 54 to display the current gear position, battery level, or usage time. The protective plate 56 is preferably transparent to facilitate the user's immediate viewing of the displayed content.

[0054] The fan barrel 3 is mounted on the outlet end of the fan barrel 3. The connecting sleeve 53 is snap-fitted to the outlet cover 31 and located inside the fan barrel 3. The fan barrel 3 is mounted on the inlet end of the fan barrel 3. Several air inlet grilles 33 are located inside the air inlet cover 32, and are evenly spaced along the circumference of the fan barrel 3. The air inlet grilles 33 provide preliminary rectification of the airflow entering the fan barrel 3, making it more orderly and reducing airflow turbulence before entering the fan blades 62. This improves wind transmission efficiency and reduces noise caused by turbulent airflow, providing a quieter user experience.

[0055] The number of blades 62 is smaller than the number of first air guide blades 41, and the number of first air guide blades 41 is smaller than the number of second air guide blades 51. The surface area of ​​the blades 62 is the largest, and they can draw the airflow from the outside into the inside of the fan barrel 3 with the greatest intensity. At the same time, they can blow the airflow with the largest flow rate toward the first air guide blades 41. When the airflow passes between two adjacent first air guide blades 41, since the number of first air guide blades 41 is smaller than the number of second air guide blades 51, it is convenient for the airflow to pass quickly and be cut and redirected by them for preliminary cutting. When the airflow is cut and redirected for the second time by the second air guide blades 51, since the number of first air guide blades 41 is the largest, the intensity of the cutting and redirection is the greatest, and the ability to reduce turbulence and eddy currents is the highest. Therefore, in the process of being discharged to the outside, the noise reduction intensity is the highest, thereby improving the use effect.

[0056] In the present application, the grip shell 7 includes a left half shell 71 and a right half shell 72 that are buckled together. The tops of the left half shell 71 and the right half shell 72 are both set to be arc-shaped, and the left half shell 71 is hinged to the fan cylinder 3. The arc shape is set to avoid the fan cylinder 3 and optimize the overall shape.

[0057] Both sides of the bottom of the grip housing 7 are provided with slots 73 that fit over the hook 8, and the inner walls of the slots 73 are provided with stopper protrusions 74. The slots 73 are composed of two half-slots, one on the left half 71 and the other on the right half 72, which interlock to form a complete slot 73. The split design of the grip housing 7 facilitates the installation of various internal devices, including the battery, control panel, charging port, and control buttons, and also facilitates the installation of the hook 8 within the slots 73.

[0058] The hook 8 comprises two opposing connecting rods 81. The inner sides of the connecting rods 81 are provided with connecting bosses 82 that mate with the slide slots 73. The connecting bosses 82 are located at the top of the connecting rods 81 and have a T-shaped structure. A hook body 83 is fixed to the bottoms of the two connecting rods 81. The connecting bosses 82 slide within the slide slots 73. A stopper 74, positioned near the top of the slide slots 73, allows the connecting bosses 82 to be caught by the stopper 74 as they slide vertically upward, restricting their downward movement and reducing the space occupied by the hook 8 and the grip housing 7.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Handheld fan, characterized in that, It includes a fan unit and a gripping unit connected thereto; The fan unit includes a fan cylinder, wherein a first air guide structure, a second air guide structure, and a fan assembly are coaxially arranged inside the fan cylinder; the second air guide structure and the fan assembly are respectively arranged on both sides of the first air guide structure, and the air outlet direction of the fan assembly is from the first air guide structure to the second air guide structure; The first air guide structure includes a plurality of first air guide blades, and the plurality of first air guide blades rotate clockwise or counterclockwise toward a side close to the fan cylinder; The second air guide structure is arranged downstream of the first air guide structure along the air flow direction, and the second air guide structure includes a plurality of second air guide blades arranged in a rotational direction, and the rotation direction of the second air guide blades is opposite to that of the first air guide blades; The fan assembly includes a fan base driven by a power member, and a plurality of rotatable fan blades are fixedly provided on the outer periphery of the fan base, wherein the rotation direction of the fan blades is opposite to the rotation direction of the first air guide blades; The holding unit includes a holding shell, one side of the top of the holding shell is hinged to the fan cylinder, and the fan cylinder can rotate back and forth toward one side of the holding shell; a position-adjustable hook is installed at the bottom of the holding shell.

2. The handheld fan according to claim 1, wherein: The first air guide structure includes a first air guide seat coaxially arranged with the fan cylinder, the first air guide blades are fixed between the first air guide seat and the fan cylinder, and a plurality of the first air guide blades are equidistantly arranged axially around the first air guide seat.

3. The handheld fan according to claim 2, wherein: The second air guide structure includes a second air guide seat, which is fixed on the first air guide seat and located downstream of the first air guide seat along the airflow direction; A coaxially arranged connecting sleeve is provided on the outer side of the second air guide seat, and the second air guide blade is fixedly arranged between the second air guide seat and the connecting sleeve.

4. The handheld fan according to claim 3, wherein: The second air guide seat is a hollow structure, and a support cover is installed at one end of the second air guide seat, and the support cover is arranged close to the first air guide seat; The second air guide blades include main air guide blades and auxiliary air guide blades, and the main air guide blades and the auxiliary air guide blades are arranged alternately; a plurality of rotatable support blades are mounted on the support cover plate, and the positions and numbers of the support blades correspond to those of the auxiliary air guide blades one by one, and the support blades abut against the auxiliary air guide blades; A guard plate is installed at the other end of the second air guide seat.

5. The handheld fan according to claim 3, wherein: An air outlet cover is installed at the air outlet end of the fan cylinder, and the connecting sleeve is clamped on the air outlet cover and is located inside the fan cylinder.

6. The handheld fan according to claim 1, wherein: An air inlet cover is installed at the air inlet end of the fan cylinder, and a plurality of air inlet grilles are arranged inside the air inlet cover. The plurality of air inlet grilles are arranged at equal intervals along the circumference of the fan cylinder.

7. The handheld fan according to claim 1, wherein: The number of the fan blades is smaller than the number of the first wind guide blades, and the number of the first wind guide blades is smaller than the number of the second wind guide blades.

8. The handheld fan according to claim 1, wherein: The grip shell includes a left half shell and a right half shell that are buckled together. The tops of the left half shell and the right half shell are both configured to be arc-shaped. The left half shell is hinged to the fan cylinder.

9. The handheld fan according to claim 1, wherein: Both sides of the bottom of the grip shell are provided with sliding grooves adapted to the hooks, and the inner walls of the sliding grooves are provided with limiting protrusions.

10. The handheld fan according to claim 9, wherein The hook comprises two connecting rods arranged opposite to each other, the inner sides of the connecting rods are provided with connecting bosses adapted to the sliding grooves, and the connecting bosses are arranged on the tops of the connecting rods and are T-shaped structures; The bottoms of the two connecting rods are fixed with hook bodies.

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