A multi-purpose electric fan

Abstract

This utility model discloses a multi-purpose electric fan, including: a support assembly and a fan blowing assembly; the support assembly includes a rear support unit and a front support unit, the height and width of the front support unit are adjustable, the lower end of the front support unit is detachably connected to the rear support unit, and the fan blowing assembly is detachably connected to the upper end of the front support unit; the fan blowing assembly includes fan blades and a drive motor assembly for driving the fan blades to rotate, the drive motor assembly includes a brushless DC motor, and the fan blades are connected to the output shaft of the brushless DC motor. This utility model facilitates switching between tabletop and floor-standing fan modes, has low noise, and enriches the functionality of the electric fan.

Description

Technical Field

[0001] This utility model relates to the field of electric fan technology, and in particular to a multi-purpose electric fan that is driven by a brushless DC motor, has adjustable height and width, and integrates USB-A power supply and Bluetooth remote control functions. Background Technology

[0002] As society continues to progress, people have higher and higher requirements for electric fans, constantly pursuing more energy-efficient, convenient, and multifunctional electric fans.

[0003] Currently, most electric fans on the market have simple structures and functions, and use AC motors to drive the fan blades. The motors are not very efficient, which is not conducive to the promotion and application of electric fans. Utility Model Content

[0004] The main purpose of this utility model is to propose a multi-functional electric fan, aiming to enrich the functionality of electric fans.

[0005] To achieve the above objectives, this utility model provides a multi-purpose electric fan, including: a bracket assembly and a fan blowing assembly;

[0006] The bracket assembly includes a rear bracket and a front bracket unit. The height and width of the front bracket unit are adjustable. The lower end of the front bracket unit is detachably connected to the rear bracket. The fan blowing assembly is detachably connected to the upper end of the front bracket unit.

[0007] The fan blowing assembly includes a fan blade and a drive motor assembly for driving the fan blade to rotate. The drive motor assembly includes a brushless DC motor, and the fan blade is connected to the output shaft of the brushless DC motor.

[0008] A further technical solution of this utility model is that the rear bracket is U-shaped, and the front bracket unit includes a front bracket, a front upper bracket, and a straight passage symmetrically arranged at the two free ends of the rear bracket. The front bracket is L-shaped, and the bottom of the front bracket is detachably connected to the free end of the rear bracket, and the top of the front bracket is detachably connected to the bottom of the front upper bracket; or, the top of the front bracket is detachably connected to the bottom of the straight passage, and the top of the straight passage is detachably connected to the bottom of the front upper bracket; the fan blowing assembly is detachably connected to the top of the front upper bracket.

[0009] A further technical solution of this utility model is that at least one buckle is provided at the free end of the rear bracket, the top of the front bracket, and the top of the straight section; at least two positioning holes adapted to the buckles are provided at the bottom of the front bracket; and at least one positioning hole adapted to the buckles is provided at the bottom of the straight section and the bottom of the front upper bracket.

[0010] A further technical solution of this utility model is that the fan blowing assembly further includes a front mesh cover and a rear mesh cover, the front mesh cover is disposed in front of the rear mesh cover, the drive motor is disposed in the middle of the rear mesh cover, and the fan blades are disposed inside the front mesh cover and the rear mesh cover and connected to the output shaft of the brushless DC motor.

[0011] A further technical solution of this utility model is that the drive motor assembly further includes a front housing, an electrical box, a function display and control board, a power board, and a rear cover. The brushless DC motor is disposed inside the front housing, the front housing is disposed inside the electrical box, the function display and control board and the power board are disposed inside the electrical box, and the rear cover is disposed behind the electrical box.

[0012] A further technical solution of this utility model is that the function display control board is provided with buttons and a digital display screen.

[0013] A further technical solution of this utility model is that a Bluetooth module is provided on the function display control board.

[0014] A further technical solution of this utility model is a USB-A socket on the function display control board.

[0015] A further technical solution of this utility model is that the power board is provided with an AC socket, a transformer and power electronic devices to form an AC-DC step-down circuit, which supplies power to the brushless DC motor through the power socket.

[0016] A further technical solution of this utility model is that a DC socket is provided on the power board, and the DC socket is connected to the power supply socket through the internal circuit of the power board.

[0017] This utility model achieves the following effects through optimized design of the electric fan structure, especially the bracket and functions:

[0018] 1. The bracket width is adjustable, and the force-bearing area at the bottom of the bracket is increased, so the fan will not tip over, ensuring safe and reliable long-term use;

[0019] 2. Enables multiple power inputs; in situations where there is no mains power supply, it can be powered by batteries or power banks, adapting to various usage scenarios.

[0020] 3. The fan blades are driven by a brushless DC motor, which saves energy and reduces noise;

[0021] 4. Bluetooth APP mobile phone remote control, convenient to use;

[0022] 5. The DC socket and USB-A socket can be used as a charging station for mobile devices, increasing the fan's versatility and enabling the fan to be used for multiple purposes and with multiple functions. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a side view of the multi-purpose electric fan of this utility model when used as a tabletop fan;

[0025] Figure 2 This is a front view of the multi-purpose electric fan of this utility model when used as a tabletop fan;

[0026] Figure 3 This is a side view of the multi-purpose electric fan of this utility model when used as a floor fan;

[0027] Figure 4 This is a front view of the multi-purpose electric fan of this utility model when used as a floor fan;

[0028] Figure 5 This is an exploded structural diagram of the support assembly;

[0029] Figure 6 This is an exploded view of the fan blowing assembly;

[0030] Figure 7 This is an exploded view of the drive motor assembly;

[0031] Figure 8 This is a structural diagram of the function display control panel;

[0032] Figure 9 This is a schematic diagram of the power supply board.

[0033] Explanation of icon numbers:

[0034] Bracket Component 1:

[0035] 11. Rear bracket; 12. Front bracket; 13. Front upper bracket; 14. Straight-through; 15. Buckle; 16. Positioning hole;

[0036] Fan blowing component 2:

[0037] 21. Front grille; 22. Fan blade; 23. Rear grille; 24. Drive motor assembly; 25. Screw; 26. Washer; 27. Injection nut;

[0038] Front housing 241; Brushless DC motor 242; Electrical box 243; Function display and control board 244; Power board 245; Rear cover 246;

[0039] Function buttons 2441; Digital display screen 2442; Bluetooth module 2443; USB-A socket 2444;

[0040] AC socket 2451; Transformer 2452; Power electronic device 2453; DC socket 2454; Power supply socket 2455.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] This utility model proposes a multi-purpose electric fan. Please refer to [reference needed]. Figures 1 to 9 The preferred embodiment of this multi-purpose electric fan includes a bracket assembly 1 and a fan blowing assembly 2.

[0044] The bracket assembly 1 includes a rear bracket 11 and a front bracket unit. The height and width of the front bracket unit are adjustable. The lower end of the front bracket unit is detachably connected to the rear bracket 11. The fan blowing assembly 2 is detachably connected to the upper end of the front bracket unit.

[0045] The fan blowing assembly 2 includes a fan blade 22 and a drive motor assembly 24 for driving the fan blade 22 to rotate. The drive motor assembly 24 includes a brushless DC motor 242, and the fan blade 22 is connected to the output shaft of the brushless DC motor 242.

[0046] In this embodiment, the height of the front support unit is adjustable, thereby facilitating the switching between a tabletop fan and a floor fan. When used as a tabletop fan, the length of the front support unit is shortened; when used as a floor fan, the length is extended. Furthermore, in this embodiment, the width of the front support unit is adjustable. Increasing the width increases the bottom bearing area of ​​the front support unit, preventing the fan from tipping over and ensuring long-term safe and reliable use. Additionally, this embodiment uses a brushless DC motor 242 to drive the fan blades 22, resulting in energy saving and noise reduction.

[0047] Specifically, in this embodiment, the rear support 11 is U-shaped, and the front support unit includes a front support 12, a front upper support 13, and a straight passage 14 symmetrically arranged at the two free ends of the rear support 11. The front support 12 is L-shaped, and the bottom of the front support 12 is detachably connected to the free end of the rear support 11, and the top of the front support 12 is detachably connected to the bottom of the front upper support 13; or, the top of the front support 12 is detachably connected to the bottom of the straight passage 14, and the top of the straight passage 14 is detachably connected to the bottom of the front upper support 13; the fan blowing assembly 2 is detachably connected to the top of the front upper support 13.

[0048] When the multi-purpose electric fan needs to be used as a table fan, first connect the front bracket 12 to the rear bracket 11, then connect the upper front bracket 13, and finally install the fan blowing assembly 2 on the upper front bracket 13. When the multi-purpose electric fan needs to be used as a floor fan, first connect the front bracket 12 to the rear bracket 11, then connect the straight-through 14 to the front bracket 12, then connect the upper front bracket 13 to the straight-through 14, and finally install the fan blowing assembly 2 on the upper front bracket 13.

[0049] Furthermore, in this embodiment, at least one buckle 15 is provided at the free end of the rear bracket 11, the top of the front bracket 12, and the top of the straight passage 14; at least two positioning holes 16 adapted to the buckles 15 are provided at the bottom of the front bracket 12; and at least one positioning hole 16 adapted to the buckles 15 is provided at the bottom of the straight passage 14 and the bottom of the front upper bracket 13.

[0050] In this embodiment, the buckle 15 is connected to the corresponding positioning hole 16, which can achieve quick assembly and fixation.

[0051] Furthermore, in this embodiment, the fan blowing assembly 2 also includes a front mesh cover 21 and a rear mesh cover 23. The front mesh cover 21 is disposed in front of the rear mesh cover 23, and the front mesh cover 21 and the rear mesh cover 23 are connected by screws 25, washers 26 and injection-molded nuts 27.

[0052] The drive motor is located in the middle of the rear grille 23, and the fan blade 22 is located inside the front grille 21 and the rear grille 23 and is connected to the output shaft of the brushless DC motor 242.

[0053] The drive motor assembly 24 also includes a front housing 241, an electrical box 243, a function display and control board 244, a power board 245, and a rear cover 246. The brushless DC motor 242 is disposed inside the front housing 241, the front housing 241 is disposed inside the electrical box 243, the function display and control board 244 and the power board 245 are disposed inside the electrical box 243, and the rear cover 246 is disposed behind the electrical box 243.

[0054] The function display control board 244 is equipped with function buttons 2441 and a digital display screen 2442. In this embodiment, the function display control board 244 is composed of electronic components. The function buttons 2441 are used to turn the electric fan on and off and to select different speeds. The digital display screen 2442 displays the real-time speed of the electric fan.

[0055] The function display control board 244 is equipped with a Bluetooth module 2443, which can be remotely operated via a mobile phone APP.

[0056] The USB-A socket 2444 on the function display control board 244 supports 5V / 3A output power supply and mobile phone fast charging function.

[0057] The power board 245 is equipped with an AC socket 2451, a transformer 2452 and a power electronic device 2453 to form an AC-DC step-down circuit, which supplies power to the brushless DC motor 242 through the power socket 2455.

[0058] The power board 245 is composed of electronic components. It forms an AC-DC step-down circuit through the AC socket 2451, transformer 2452, power electronic components 2453 and other electronic components. The power supply socket 2455 supplies power to the brushless DC motor 242.

[0059] Furthermore, in this embodiment, a DC socket 2454 is provided on the power board 245, and the DC socket is connected to the power supply socket 2455 through the internal circuit of the power board 245.

[0060] In this embodiment, the DC socket 2454 is connected to the power supply socket 2455 through the internal circuit of the power board 245. When there is no AC power, a battery or power bank can be used to power the fan through the DC socket 2454. When the fan is powered by AC power, the DC socket 2454 can also be used as a DC power output to power other devices that require DC power.

[0061] This utility model achieves the following effects through optimized design of the electric fan structure, especially the bracket and functions:

[0062] 1. The bracket width is adjustable, and the force-bearing area at the bottom of the bracket is increased, so the fan will not tip over, ensuring safe and reliable long-term use;

[0063] 2. Enables multiple power inputs; in situations where there is no mains power supply, it can be powered by batteries or power banks, adapting to various usage scenarios.

[0064] 3. The fan blades are driven by a brushless DC motor, which saves energy and reduces noise;

[0065] 4. Bluetooth APP mobile phone remote control, convenient to use;

[0066] 5. The DC socket and USB-A socket can be used as a charging station for mobile devices, increasing the fan's versatility and enabling the fan to be used for multiple purposes and with multiple functions.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A multi-purpose electric fan characterized in that, include: Bracket assembly and fan / blowing assembly; The bracket assembly includes a rear bracket and a front bracket unit. The height and width of the front bracket unit are adjustable. The lower end of the front bracket unit is detachably connected to the rear bracket. The fan blowing assembly is detachably connected to the upper end of the front bracket unit. The fan blowing assembly includes a fan blade and a drive motor assembly for driving the fan blade to rotate. The drive motor assembly includes a brushless DC motor, and the fan blade is connected to the output shaft of the brushless DC motor.

2. The multi-purpose electric fan as claimed in claim 1, wherein, The rear support is U-shaped, and the front support unit includes a front support, a front upper support, and a straight passage symmetrically arranged at the two free ends of the rear support. The front support is L-shaped, and the bottom of the front support is detachably connected to the free end of the rear support, and the top of the front support is detachably connected to the bottom of the front upper support; or, the top of the front support is detachably connected to the bottom of the straight passage, and the top of the straight passage is detachably connected to the bottom of the front upper support; the fan blowing assembly is detachably connected to the top of the front upper support.

3. The multi-purpose electric fan as claimed in claim 2, wherein, The free end of the rear bracket, the top of the front bracket, and the top of the straight section are each provided with at least one buckle. The bottom of the front bracket is provided with at least two positioning holes that are adapted to the buckles. The bottom of the straight section and the bottom of the upper front bracket are each provided with at least one positioning hole that is adapted to the buckles.

4. The multi-purpose electric fan as claimed in claim 1, wherein, The fan blowing assembly also includes a front grille and a rear grille. The front grille is located in front of the rear grille, the drive motor is located in the middle of the rear grille, and the fan blades are located inside the front and rear grilles and connected to the output shaft of the brushless DC motor.

5. The multi-purpose electric fan as claimed in claim 1, wherein, The drive motor assembly also includes a front housing, an electrical box, a function display and control board, a power board, and a rear cover. The brushless DC motor is disposed inside the front housing, the front housing is disposed inside the electrical box, the function display and control board and the power board are disposed inside the electrical box, and the rear cover is disposed behind the electrical box.

6. The multi-purpose electric fan as claimed in claim 5 wherein, The function display control panel is equipped with buttons and a digital display screen.

7. The multi-purpose electric fan as claimed in claim 6 wherein, The function display control board is equipped with a Bluetooth module.

8. The multi-purpose electric fan as claimed in claim 7, wherein, The USB-A socket is located on the function display control board.

9. The multi-purpose electric fan as claimed in claim 5 wherein, The power board is equipped with an AC socket, a transformer, and power electronic devices to form an AC-DC step-down circuit, which supplies power to the brushless DC motor through the power socket.

10. The multi-purpose electric fan as claimed in claim 9, wherein, The power board is equipped with a DC socket, which is connected to the power supply socket through the internal circuitry of the power board.

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