Small desktop fan

Abstract

The utility model relates to a small desktop fan, which belongs to the technical field of fan equipment and comprises a fan base, a switch button, a fan supporting arm, a driving motor, two fan mounting nets, a fan frame, fan blades, a protection structure mounted on the outer wall of the fan base and a dustproof mounting structure mounted on the outer walls of the fan mounting nets. The protection structure comprises two friction fixing shafts which are fixedly installed on the peripheral wall of the fan base. According to the small desktop fan, a friction fixing shaft and a friction adjusting ring drive an adjusting frame and a sealing arc-shaped blocking block to adjust the angle, so that the sealing arc-shaped blocking block is adjusted and rotated up and down, a charging hole in a fan base is sealed, and the sealing arc-shaped blocking block is attached to the charging hole of the small desktop fan through the elastic effect of a telescopic spring; the charging position of the small desktop fan is protected, dust and liquid are prevented from entering the charging hole, and the service life of the small desktop fan is prolonged.

Description

Technical Field

[0001] This application relates to the field of fan equipment technology, specifically a desktop fan. Background Technology

[0002] A desktop mini fan is a portable electric fan designed to be placed on a desk or other flat surface to provide a cool breeze for personal use. They are typically small, lightweight, and easy to carry and store, making them suitable for use at home, in the office, at school, or outdoors. Desktop mini fans usually have multiple fan speed settings, and some models also feature an oscillating function to expand the airflow range. They can be powered by batteries or connected to a power source via a USB interface, are easy to operate, and are a convenient tool for improving comfort in hot weather.

[0003] In the process of developing this application, the inventors discovered that the technology has at least the following problems: desktop fans generally have a battery installed inside, so the desktop fan needs to charge the internal battery through an external charging cable, which requires a charging port. However, currently the charging port is generally exposed, and dust in the air can easily enter the charging port, affecting the charging of the desktop fan. At the same time, if the user accidentally spills liquid on the desktop, it may enter the charging port, causing the desktop fan to become unusable. Therefore, a desktop fan is proposed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a desktop mini fan, which has the advantages of improving the protection and dust prevention effect of the desktop mini fan, and solves the problem of the desktop mini fan being affected by charging and causing the desktop mini fan to become unusable.

[0005] This application provides the following technical solution: a desktop mini fan, including a fan base, a switch button, a fan support arm, a drive motor, two fan mounting nets, a fan frame, fan blades, a protective structure installed on the outer wall of the fan base, and a dustproof mounting structure installed on the outer wall of the fan mounting net;

[0006] The protective structure includes two friction fixing shafts fixedly installed on the outer peripheral wall of the fan base, a friction adjusting ring rotatably installed on the outer peripheral wall of the friction fixing shaft, an adjusting frame fixedly installed on the outer peripheral wall of the friction adjusting ring, a telescopic spring fixedly installed on the inner right side wall of the adjusting frame, a tension rod slidably connected inside the adjusting frame, a tension plate fixedly installed on the outer peripheral wall of the tension rod, a pull ring fixedly installed on the outer right side wall of the tension rod, a sealing arc-shaped plug fixedly installed on the outer left side wall of the tension rod, and two friction plates fixedly installed on the inner right side wall of the adjusting frame.

[0007] The beneficial effects of adopting the above-mentioned further solution are: by using the friction fixed shaft and friction adjusting ring to drive the adjusting frame and the sealing arc-shaped block to adjust the angle, the sealing arc-shaped block is attached to the charging port of the desktop fan by the action of the telescopic spring, the tension rod and the tension plate, thus protecting the charging port of the desktop fan and reducing the impact of external factors on the desktop fan.

[0008] Furthermore, the dustproof installation structure includes two dustproof nets movably installed on the outer wall of the right fan mounting net, a positioning mounting piece fixedly installed on the outer wall of the left side of the dustproof net, mounting seats fixedly installed on the top and bottom outer walls of the dustproof net respectively, and bolts movably installed inside the two adjacent mounting seats.

[0009] The beneficial effect of adopting the above-mentioned further solution is that it provides dustproof treatment to the air intake end of the desktop fan, reduces dust adhesion to the fan blades, and improves the performance of the desktop fan.

[0010] Furthermore, the outer peripheral wall of the fan frame has two positioning slots, the positioning mounting pieces are movably installed inside the positioning slots and are of the same size, and the outer walls of the two dustproof nets on opposite sides have arc-shaped grooves.

[0011] The beneficial effects of adopting the above-mentioned further solutions are: it facilitates the positioning and installation of dustproof nets, and improves the convenience of dustproof net installation.

[0012] Furthermore, two limiting seats are fixedly installed on the outer peripheral wall of the fan base, and the adjusting bracket is movably connected to the top of the limiting seats.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the angle of the adjusting frame to rotate to the right and down is limited by the function of the limiting seat, so as to prevent the adjusting frame from rotating too much.

[0014] Furthermore, a charging hole is provided on the right side of the fan base, and the sealing arc-shaped block is movably connected to the outer peripheral wall of the fan base and fits against the charging hole. The diameter of the charging hole is smaller than the height and length of the sealing arc-shaped block.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the charging port is sealed by the sealing arc-shaped plug, preventing dust and liquid from entering the interior of the charging port.

[0016] Furthermore, the tension rod is slidably connected inside the telescopic spring, the tension plate is movably connected to the left outer wall of the telescopic spring, and the tension rod passes through the interior of the adjustment frame and extends to the right.

[0017] The beneficial effect of adopting the above-mentioned further solution is that, through the cooperation of the tension rod, the telescopic spring and the tension plate, the sealing arc-shaped plug is elastically and tightly attached to the charging hole.

[0018] Furthermore, the outer walls of the two friction plates are provided with grooves on opposite sides, and the front and rear outer walls of the stretching plate are slidably connected inside the two grooves and are of compatible size.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the stability of the telescopic spring and the tension plate during operation is improved by the action of the friction plate.

[0020] Furthermore, the switch button is installed on the top of the fan base, the fan support arm is installed on the top of the fan base, the drive motor is installed on the top of the fan support arm, the fan frame is installed between two fan mounting meshes, the right fan mounting mesh is installed on the outer peripheral wall of the drive motor, and the fan blades are installed on the outer peripheral wall of the drive motor output shaft.

[0021] The beneficial effect of adopting the above-mentioned further solution is that it can form a complete desktop mini fan.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. This desktop mini fan uses a friction fixed shaft and friction adjusting ring to drive the adjusting bracket and the sealing arc-shaped plug to adjust the angle. This allows the sealing arc-shaped plug to rotate up and down, sealing the charging port on the fan base. The elasticity of the telescopic spring ensures that the sealing arc-shaped plug fits against the charging port of the desktop mini fan, protecting the charging port from dust and liquid entering the interior of the charging port and extending the lifespan of the desktop mini fan.

[0024] 2. This desktop mini fan uses a mounting bracket, bolts, and positioning mounting plates to attach two dust filters to the right fan mounting mesh. The dust filters are located at the air intake end of the desktop mini fan. The dust filters reduce dust adhesion to the fan blades, ensuring fresher airflow and helping the fan maintain optimal performance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This utility model Figure 1 Partial top view of the structure;

[0027] Figure 3 This is a schematic diagram of the charging port structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the fan frame installation and connection structure of this utility model;

[0029] Figure 5This is a schematic diagram of the internal fan blade structure on the left side of the fan frame of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Fan base; 2. Switch button; 3. Fan support arm; 4. Drive motor; 5. Fan mounting mesh; 6. Fan frame; 7. Dustproof mesh; 8. Positioning mounting plate; 9. Mounting base; 10. Bolt; 11. Friction fixing shaft; 12. Friction adjusting ring; 13. Adjusting bracket; 14. Telescopic spring; 15. Tension rod; 16. Tension plate; 17. Pull ring; 18. Sealing arc-shaped plug; 19. Friction plate; 20. Charging port; 21. Positioning groove; 22. Slide groove; 23. Limit seat; 24. Arc-shaped groove; 25. Fan blade. Detailed Implementation

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Please see Figure 1-5 A desktop fan in this embodiment includes a fan base 1, a switch button 2, a fan support arm 3, a drive motor 4, two fan mounting nets 5, a fan frame 6, fan blades 25, a protective structure installed on the outer wall of the fan base 1, and a dustproof mounting structure installed on the outer wall of the fan mounting net 5.

[0034] The switch button 2 is installed on the top of the fan base 1, the fan support arm 3 is installed on the top of the fan base 1, the drive motor 4 is installed on the top of the fan support arm 3, the fan frame 6 is installed between the two fan mounting nets 5, the right fan mounting net 5 is installed on the outer peripheral wall of the drive motor 4, and the fan blades 25 are installed on the outer peripheral wall of the output shaft of the drive motor 4, forming a complete desktop fan.

[0035] Please see Figures 1 to 3 The protective structure includes two friction fixing shafts 11 fixedly installed on the outer peripheral wall of the fan base 1, a friction adjusting ring 12 rotatably installed on the outer peripheral wall of the friction fixing shaft 11, and an adjusting frame 13 fixedly installed on the outer peripheral wall of the friction adjusting ring 12. Two limiting seats 23 are fixedly installed on the outer peripheral wall of the fan base 1. The adjusting frame 13 is movably connected to the top of the limiting seat 23. The limiting seat 23 limits the angle of the adjusting frame 13 to rotate to the right and down, preventing the adjusting frame 13 from rotating too much.

[0036] The protective structure also includes a telescopic spring 14 fixedly installed on the inner right side of the adjusting frame 13, a tension rod 15 slidably connected inside the adjusting frame 13, a tension plate 16 fixedly installed on the outer peripheral wall of the tension rod 15, a pull ring 17 fixedly installed on the outer right side of the tension rod 15, and a sealing arc-shaped plug 18 fixedly installed on the outer left side of the tension rod 15. A charging hole 20 is provided on the right side of the fan base 1. The sealing arc-shaped plug 18 is movably connected to the outer peripheral wall of the fan base 1 and fits against the charging hole 20. The diameter of the charging hole 20 is smaller than the height and length of the sealing arc-shaped plug 18. The sealing arc-shaped plug 18 seals the charging hole 20 to prevent dust and liquid from entering the interior of the charging hole 20.

[0037] The tension rod 15 is slidably connected inside the telescopic spring 14, and the tension plate 16 is movably connected to the left outer wall of the telescopic spring 14. The tension rod 15 passes through the interior of the adjustment frame 13 and extends to the right. Through the mutual cooperation of the tension rod 15, the telescopic spring 14 and the tension plate 16, the sealing arc-shaped block 18 is elastically and tightly attached to the charging hole 20.

[0038] The protective structure also includes two friction plates 19 fixedly installed on the inner wall of the right side of the adjusting frame 13. The outer walls of the two friction plates 19 are provided with grooves 22 on opposite sides. The outer walls of the front and rear sides of the tension plate 16 are slidably connected to the inside of the two grooves 22 and are matched in size. The friction plates 19 improve the stability of the telescopic spring 14 and the tension plate 16 during operation.

[0039] Please see Figure 1 and Figure 4 The dustproof installation structure includes two dustproof nets 7 that are movably installed on the outer wall of the right fan mounting net 5, a positioning mounting piece 8 that is fixedly installed on the outer wall of the left side of the dustproof net 7, mounting bases 9 that are fixedly installed on the top and bottom outer walls of the dustproof net 7 respectively, and bolts 10 that are movably installed inside the two adjacent mounting bases 9. The structure provides dustproof treatment for the air intake end of the desktop fan, reduces dust adhesion to the fan blades 25, and improves the performance of the desktop fan.

[0040] The outer peripheral wall of the fan frame 6 has two positioning slots 21. The positioning mounting piece 8 is movably installed inside the positioning slot 21 and is of the same size. The outer wall of the two dustproof nets 7 on opposite sides has an arc-shaped groove 24, which facilitates the positioning and installation of the dustproof nets 7 and improves the convenience of the installation of the dustproof nets 7.

[0041] In this embodiment, both the friction fixed shaft 11 and the friction adjusting ring 12 have a certain frictional force, and will not rotate unless affected by external force after the adjusting frame 13 rotates to adjust the angle.

[0042] In this embodiment, the sealing arc-shaped block 18 can completely seal the charging port 20, preventing dust and liquid from entering the interior of the charging port 20.

[0043] In this implementation case, the dustproof net 7 is installed and fixed by bolts 10, which facilitates the installation or disassembly of the dustproof net 7 and the subsequent cleaning of the dustproof net 7.

[0044] In this embodiment, the pull ring 17 facilitates the user to pull the sealing arc-shaped block 18 to the right, which makes it easier to rotate the adjustment bracket 13 to adjust the angle later.

[0045] In this embodiment, the arc-shaped groove 24 enables the dustproof net 7 to be installed and adapted to the drive motor 4.

[0046] In this implementation case, when a lot of dust adheres to the outer wall of the dustproof net 7, the two bolts 10 are removed from the inside of the mounting base 9. The two dustproof nets 7 can no longer be fixed to the outer wall of the right fan mounting net 5. Then the two dustproof nets 7 can be removed, and the dust adhering to the outer wall of the dustproof net 7 can be cleaned with water. Subsequently, the water on the outer wall of the dustproof net 7 can be removed by heating or natural drying. After cleaning and installing the dustproof net 7, not only is the overall air volume of the desktop fan improved, but the aesthetics of the desktop fan are also maintained, avoiding a dirty and messy appearance caused by dust accumulation.

[0047] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0048] The working principle of the above embodiment is:

[0049] First, install the two dustproof nets 7 on the outer wall of the right fan mounting net 5 from the front and back respectively. The positioning mounting piece 8 will be installed inside the positioning groove 21. After both dustproof nets 7 are in contact with the right fan mounting net 5, the bolts 10 are inserted through the interior of the two adjacent mounting seats 9 and fixed. At this time, the installation of the dustproof nets 7 is completed. When it is necessary to seal the charging hole 20, the user pulls the pull ring 17 to the right. At this time, the sealing arc-shaped block 18 moves to the right at the same time. Then, the adjusting bracket 13 is rotated to the lower right to adjust the angle. After the adjusting bracket 13 contacts the limit seat 23, the pull ring 17 is released. At this time, the sealing arc-shaped block 18 moves to the left by the thrust of the telescopic spring 14. The sealing arc-shaped block 18 will move to the charging hole 20 and seal it.

Claims

1. A desktop mini fan, characterized in that: Includes a fan base (1), a switch button (2), a fan support arm (3), a drive motor (4), two fan mounting nets (5), a fan frame (6), fan blades (25), a protective structure installed on the outer wall of the fan base (1), and a dustproof mounting structure installed on the outer wall of the fan mounting net (5); The protective structure includes two friction fixing shafts (11) fixedly installed on the outer peripheral wall of the fan base (1), a friction adjusting ring (12) rotatably installed on the outer peripheral wall of the friction fixing shaft (11), an adjusting frame (13) fixedly installed on the outer peripheral wall of the friction adjusting ring (12), a telescopic spring (14) fixedly installed on the inner right side of the adjusting frame (13), a tension rod (15) slidably connected inside the adjusting frame (13), a tension plate (16) fixedly installed on the outer peripheral wall of the tension rod (15), a pull ring (17) fixedly installed on the outer right side of the tension rod (15), a sealing arc-shaped plug (18) fixedly installed on the outer left side of the tension rod (15), and two friction plates (19) fixedly installed on the inner right side of the adjusting frame (13).

2. A desktop mini fan according to claim 1, characterized in that: The dustproof installation structure includes two dustproof nets (7) that are movably installed on the outer wall of the right fan mounting net (5), a positioning mounting piece (8) that is fixedly installed on the outer wall of the left side of the dustproof net (7), mounting seats (9) that are fixedly installed on the top and bottom outer walls of the dustproof net (7) respectively, and bolts (10) that are movably installed inside the two adjacent mounting seats (9).

3. A desktop mini fan according to claim 2, characterized in that: The outer peripheral wall of the fan frame (6) has two positioning slots (21), the positioning mounting piece (8) is movably installed inside the positioning slot (21) and is of the same size, and the outer wall of the two dustproof nets (7) on opposite sides has an arc-shaped groove (24).

4. A desktop mini fan according to claim 1, characterized in that: Two limiting seats (23) are fixedly installed on the outer peripheral wall of the fan base (1), and the adjusting frame (13) is movably connected to the top of the limiting seat (23).

5. A desktop mini fan according to claim 1, characterized in that: A charging hole (20) is provided on the right side of the fan base (1). The sealing arc-shaped block (18) is movably connected to the outer peripheral wall of the fan base (1) and fits against the charging hole (20). The diameter of the charging hole (20) is smaller than the height and length of the sealing arc-shaped block (18).

6. A desktop mini fan according to claim 1, characterized in that: The tension rod (15) is slidably connected inside the telescopic spring (14), the tension plate (16) is movably connected to the left outer wall of the telescopic spring (14), and the tension rod (15) passes through the interior of the adjusting frame (13) and extends to the right.

7. A desktop mini fan according to claim 1, characterized in that: The two friction plates (19) have grooves (22) on their opposite outer walls. The front and rear outer walls of the stretching plate (16) are slidably connected to the inside of the two grooves and are of the same size.

8. A desktop mini fan according to claim 1, characterized in that: The switch button (2) is installed on the top of the fan base (1), the fan support arm (3) is installed on the top of the fan base (1), the drive motor (4) is installed on the top of the fan support arm (3), the fan frame (6) is installed between two fan mounting nets (5), the right fan mounting net (5) is installed on the outer peripheral wall of the drive motor (4), and the fan blade (25) is installed on the outer peripheral wall of the output shaft of the drive motor (4).

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