Electric fan easy to disassemble and assemble

Abstract

The utility model relates to an electric fan easy to disassemble and assemble. The electric fan comprises fan blades, a fan cover, a connecting piece and a motor. The fan blades are arranged in the fan cover; connecting holes are formed in the fan blades; the connecting piece is clamped with the connecting hole; a first blind hole and a second blind hole are formed in the connecting piece, and the first blind hole and the second blind hole are formed in the opposite sides of the connecting piece; a driving shaft of the motor penetrates through the fan cover and is clamped with the first blind hole; wherein a positioning shaft is also arranged in the fan cover; the positioning shaft extends into the second blind hole; a first magnet is further arranged in the second blind hole to attract the driving shaft stretching into the first blind hole. According to the utility model, the motor and the connecting piece as well as the connecting piece and the fan blades are connected and fixed through clamping, so that the operation stability is guaranteed, and the disassembly and assembly steps and complexity are simplified. Through convenient disassembly and assembly, the disassembly and assembly efficiency of the electric fan easy to disassemble and assemble is improved. A user can better maintain the fan, and the maintenance cost of the fan is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an easily detachable electric fan. Background Art

[0002] Electric fans are common electrical appliances in many homes and offices. They consist of a motor, a fan housing, and fan blades.

[0003] To ensure a tight connection between the various components of the fan, enhance the overall structural stability, and enable detachability, the fan components are connected using screws. However, screw connections require tools for installation and removal, making installation complex and increasing both time and cost. Furthermore, many fans are now purchased and shipped online, arriving disassembled and requiring self-assembly by the customer. This complex installation increases the post-delivery assembly burden for the customer and increases communication costs between the merchant and the customer.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide an easily detachable electric fan to simplify the disassembly and assembly of the electric fan.

[0006] The technical solution of the utility model is as follows:

[0007] An easily detachable electric fan comprises a fan blade, a fan cover, a connecting piece and a motor; the fan blade is arranged in the fan cover; a connecting hole is provided on the fan blade; the connecting piece is engaged with the connecting hole; a first blind hole and a second blind hole are provided on the connecting piece, and the first blind hole and the second blind hole are provided on opposite sides of the connecting piece; the driving shaft of the motor passes through the fan cover and is engaged with the first blind hole; wherein a positioning shaft is also provided in the fan cover; the positioning shaft extends into the second blind hole; a first magnet is also provided in the second blind hole to attract the driving shaft extending into the first blind hole.

[0008] Its further technical solution is that the fan blade includes a blade and a sleeve; the blade and the connecting hole are arranged on the sleeve; the sleeve is provided with an annular groove on the surface close to the motor, and the annular groove surrounds the connecting hole; at least two positioning rods are provided in the wind cover and extend into the annular groove.

[0009] A further technical solution is that an extension portion is circumferentially provided on the shaft sleeve, and the annular groove is provided on the extension portion.

[0010] A further technical solution is that the wind cover and the motor are respectively provided with a second magnet; when the wind cover is connected to the motor, the wind cover and the second magnets on the motor attract each other.

[0011] A further technical solution is that the diameter of the connection hole close to the opening of the motor is the largest; and the diameter of the connection hole decreases toward the side away from the motor.

[0012] Its further technical solution is that the wind cover includes a rear mesh cover and a front mesh cover; a stop is set on the outer edge of the rear mesh cover; the stop is set toward the front mesh cover, and a bayonet is opened on the stop; the bayonet is set perpendicular to the drive shaft; a card block is set on the inner side of the front mesh cover to be locked into the bayonet.

[0013] A further technical solution is that the stop is recessed toward one side of the drive shaft to form a avoidance groove; and the avoidance groove is connected to the bayonet.

[0014] A further technical solution is that a flat portion is provided on the driving shaft; and a straight inner wall is provided in the first blind hole to match the flat portion.

[0015] A further technical solution is that a positioning hole is provided on the outer surface of the wind cover; and a positioning column is provided on the motor and extends into the positioning hole.

[0016] A further technical solution is that a limiting protrusion is provided on the outer surface of the connecting member; a limiting groove is opened on the inner wall of the connecting hole; when the connecting member is extended into the connecting hole, the limiting protrusion is locked into the limiting groove.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] (1) The easily detachable electric fan in the present invention connects the fan blades and the motor through a connector. The motor and the connector, as well as the connector and the fan blades, are all connected by snap-fit ​​connections. The snap-fit ​​connection is easy to plug and unplug, convenient for quick disassembly and assembly, and reduces the time and complexity of fan installation and maintenance. In addition, a positioning shaft is provided in the fan cover and extends into the second blind hole, and a first magnet is provided in the first blind hole. The cooperation between the positioning shaft and the second blind hole enhances the connection stability between the fan cover and the fan blades, and improves the stability of the fan blades set in the fan cover during rotation, thereby reducing vibration and noise during operation of the fan. The first magnet can adsorb the drive shaft, thereby increasing the connection strength between the connector and the drive shaft. In summary, the easily detachable electric fan ensures operational stability while simplifying the disassembly and assembly steps and complexity. By conveniently disassembling and assembling, the disassembly and assembly efficiency of the easily detachable electric fan is improved. Users can better maintain and service the fan, reducing the fan maintenance cost.

[0019] (2) Furthermore, an annular groove is provided on the shaft sleeve, and at least two positioning rods are provided on the wind shield and extend into the annular groove. When the motor drives the shaft sleeve to rotate, the positioning rods press against the position of the limiting shaft sleeve, thereby ensuring that the distance between the shaft sleeve and the wind shield remains unchanged, thereby improving the stability of the shaft sleeve during rotation.

[0020] (3) Furthermore, the diameter of the connection hole is largest near the opening of the motor, which is convenient for assembling the connector in the connection hole. And the diameter of the connection hole decreases towards the side away from the motor to limit and fix the connection hole and the connection block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model shows a three-dimensional structural schematic diagram of an easily detachable electric fan.

[0022] Figure 2 The utility model shows a vertical cross-sectional structural schematic diagram of an easily detachable electric fan.

[0023] Figure 3 The utility model shows a three-dimensional structural schematic diagram of the wind blades in the easily detachable electric fan.

[0024] Figure 4 The utility model shows a schematic diagram of the three-dimensional structure of the front mesh cover of the easily detachable electric fan.

[0025] Figure 5 The utility model shows a three-dimensional structural schematic diagram of the rear mesh cover of the easily detachable electric fan.

[0026] Figure 6 The utility model shows a three-dimensional structural diagram of the motor and the connecting parts in the easily detachable electric fan.

[0027] In the accompanying drawings:

[0028] 1. Motor; 11. Drive shaft; 111. Flat position; 12. Positioning column; 2. Connecting piece; 21. First blind hole; 22. Second blind hole; 23. First magnet; 24. Limiting protrusion; 3. Fan cover; 31. Front mesh cover; 311. Positioning shaft; 312. Block; 32. Rear mesh cover; 321. Positioning rod; 322. Positioning hole; 323. Stop; 324. Avoiding groove; 325. Bayonet; 4. Fan blade; 41. Blade; 42. Bushing; 421. Connecting hole; 422. Limiting groove; 423. Extension; 424. Annular groove. DETAILED DESCRIPTION

[0029] To make the purposes, features, and advantages of this utility model more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not intended to limit the conditions for the implementation of this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, as long as they do not affect the efficacy and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0030] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are defined as indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0031] Figure 1 The utility model shows a three-dimensional structural schematic diagram of an easily detachable electric fan. Figure 2 The utility model shows a vertical cross-sectional structural schematic diagram of an easily detachable electric fan. Figure 3 The utility model shows a three-dimensional structural schematic diagram of the wind blades in the easily detachable electric fan. Figure 4 The figure shows the three-dimensional structure of the front grille of the easily detachable electric fan of the present invention. Figure 1 、 Figure 2 、 Figure 3 and Figure 4The easily disassembled electric fan includes a fan blade 4, a fan cover 3, a connector 2 and a motor 1. The fan blade 4 is arranged in the fan cover 3. A connecting hole 421 is provided on the fan blade 4. The connector 2 is snapped into the connecting hole 421. A first blind hole 21 and a second blind hole 22 are provided on the connector 2, and the first blind hole 21 and the second blind hole 22 are provided on opposite sides of the connector 2. The drive shaft 11 of the motor 1 passes through the fan cover 3 and is snapped into the first blind hole 21. The motor 1 and the connector 2, and the connector 2 and the fan blade 4 are all connected by snapping. The snap connection is easy to plug and unplug, convenient for quick disassembly and assembly, and reduces the time and complexity of fan installation and maintenance. Among them, a positioning shaft 311 is also provided in the fan cover 3. The positioning shaft 311 extends into the second blind hole 22. A first magnet 23 is also provided in the second blind hole 22 to adsorb the drive shaft 11 extending into the first blind hole 21. The cooperation between the positioning shaft 311 and the second blind hole 22 enhances the connection stability between the fan cover 3 and the fan blades 4, and improves the stability of the fan blades 4 set in the fan cover 3 during rotation, so as to reduce the vibration and noise when the fan is working. The first magnet 23 can adsorb the drive shaft 11, thereby increasing the connection strength between the connector 2 and the drive shaft 11. In summary, the easy-to-disassemble electric fan ensures operational stability while simplifying the disassembly and assembly steps and complexity. By convenient disassembly and assembly, the disassembly and assembly efficiency of the easy-to-disassemble electric fan is improved. Users can better maintain and service the fan, reducing the fan maintenance cost.

[0032] Please refer to Figure 2 and Figure 3 The fan blade 4 includes a blade 41 and a sleeve 42. A plurality of blades 41 are equidistantly arranged around the sleeve 42. The blades 41 and the connecting hole 421 are arranged on the sleeve 42. An annular groove 424 is provided on the surface of the sleeve 42 close to the motor 1, and the annular groove 424 surrounds the connecting hole 421. At least two positioning rods 321 are provided in the wind cover 3 and extend into the annular groove 424. When the motor 1 drives the sleeve 42 to rotate, the positioning rod 321 moves along the annular groove 424. The position of the limiting sleeve 42 is limited by the cooperation between the positioning rod 321 and the annular groove 424. Ensure that the distance between the sleeve 42 and the wind cover 3 remains unchanged, and improve the stability of the sleeve 42 during rotation.

[0033] Preferably, an extension 423 is provided circumferentially on the shaft sleeve 42, and an annular groove 424 is provided on the extension 423. The extension 423 expands the area of ​​the shaft sleeve 42, allowing the annular groove 424 to have a larger radius. Correspondingly, the support rod can be further away from the drive shaft 11, thereby more stably supporting the wind shield 3.

[0034] More preferably, a second magnet is provided on the fan cover 3 and the motor 1. When the fan cover 3 is connected to the motor 1, the second magnets on the fan cover 3 and the motor 1 attract each other, thereby improving the connection strength between the fan cover 3 and the motor 1.

[0035] The blades 41 and the sleeve 42 may be formed by snap-fitting or secondary injection molding.

[0036] Figure 5 The figure shows the three-dimensional structure of the rear mesh cover of the easily detachable electric fan of the present invention. Figure 2 、 Figure 4 and Figure 5 The wind shield 3 includes a rear mesh shield 32 and a front mesh shield 31. A stopper 323 is provided on the outer edge of the rear mesh shield 32. The stopper 323 is arranged toward the front mesh shield 31 and has a latch 325 formed on the stopper 323. The latch 325 is arranged perpendicular to the drive shaft 11. A clamping block 312 is provided on the inner side of the front mesh shield 31 and engages with the latch 325. By engaging the clamping block 312 with the latch 325, the rear mesh shield 32 and the front mesh shield 31 are quickly connected.

[0037] Preferably, the stop 323 is recessed toward one side of the drive shaft 11 to form a relief groove 324. The relief groove 324 communicates with the latch 325. By aligning the relief groove 324 with the latch block 312, closing the front and rear mesh covers 31, and then rotating the angle between the front and rear mesh covers 31, the latch block 312 can be quickly snapped into the latch 325, simplifying assembly and disassembly between the front and rear mesh covers 31, 32.

[0038] Figure 6 The figure shows the three-dimensional structure of the motor and the connecting parts in the easy-to-assemble and disassemble electric fan of the present invention. Figure 2 、 Figure 4 and Figure 6 The drive shaft 11 is provided with a flat portion 111. The first blind hole 21 is provided with a straight inner wall matching the flat portion 111 to limit the angle between the drive shaft 11 and the first blind hole 21 so that the torque of the drive shaft 11 can be transmitted to the connecting member 2.

[0039] Preferably, a positioning hole 322 is provided on the outer surface of the wind hood 3. A positioning post 12 is provided on the motor 1 and extends into the positioning hole 322. Through the positioning hole 322 and the positioning post 12, the position between the wind hood 3 and the electrode can be quickly determined and limited, simplifying the installation between the wind hood 3 and the motor 1. A limiting protrusion 24 is provided on the outer surface of the connecting member 2. A limiting groove 422 is provided on the inner wall of the connecting hole 421. When the connecting member 2 extends into the connecting hole 421, the limiting protrusion 24 is snapped into the limiting groove 422. Through the cooperation between the limiting protrusion 24 and the limiting groove 422, the angle between the connecting member 2 and the connecting hole 421 is limited, so that the torque of the connecting member 2 is transmitted to the connecting hole 421.

[0040] More preferably, the diameter of the connection hole 421 is largest near the opening of the motor 1 to facilitate insertion of the connector 2 into the connection hole 421. Towards the side away from the motor 1, the diameter of the connection hole 421 decreases to increase the friction between the connector 2 and the connection hole 421, thereby fixing the position between the connector 2 and the connection hole 421.

[0041] In some embodiments, the positions of the limiting protrusion 24 and the limiting groove 422 are interchanged. That is, the limiting groove 422 is provided on the outer surface of the connector 2. The limiting protrusion 24 is provided on the inner wall of the connecting hole 421. When the connector 2 is inserted into the connecting hole 421, the limiting protrusion 24 remains engaged with the limiting groove 422, and torque can still be transmitted between the connector 2 and the connecting hole 421.

[0042] The assembly process of this utility model is as follows:

[0043] Move the rear mesh cover 32, extend the positioning column 12 into the positioning hole 322, and pass the drive shaft 11 through the rear mesh cover 32. Then fix the connecting piece 2 on the drive shaft 11, and the flat part 111 of the drive shaft 11 matches the straight inner wall of the first blind hole 21. Then put the sleeve 42 on the connecting piece 2, and the limiting protrusion 24 is snapped into the limiting groove 422. At this time, the first magnet 23 attracts the drive shaft 11. Finally, align the block 312 and the avoidance groove 324, and align the positioning shaft 311 and the second blind hole 22 at the same time. Close the front mesh cover 31 and the rear mesh cover 32. At this time, the block 312 enters the avoidance groove 324, and the positioning shaft 311 extends into the second blind hole 22. Then rotate the front mesh cover 31 until the block 312 is snapped into the bayonet 325, completing the assembly of the easily disassembled electric fan.

[0044] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. Easy-to-disassemble electric fan, characterized by: The easily detachable electric fan comprises fan blades, a fan cover, a connector and a motor; The fan blade is arranged in the fan cover; a connecting hole is provided on the fan blade; The connecting member is engaged with the connecting hole; a first blind hole and a second blind hole are formed on the connecting member, and the first blind hole and the second blind hole are arranged on opposite sides of the connecting member; The driving shaft of the motor passes through the wind cover and is engaged with the first blind hole; A positioning shaft is further provided in the wind cover; the positioning shaft extends into the second blind hole; and a first magnet is further provided in the second blind hole to attract the driving shaft extending into the first blind hole.

2. The easily detachable electric fan according to claim 1, wherein: The fan blade includes a blade and a sleeve; the blade and the connecting hole are arranged on the sleeve; an annular groove is opened on the surface of the sleeve close to the motor, and the annular groove surrounds the connecting hole; at least two positioning rods are arranged in the wind cover and extend into the annular groove.

3. The easily detachable electric fan according to claim 2, characterized in that: An extension portion is circumferentially provided on the shaft sleeve, and the annular groove is provided on the extension portion.

4. The easily detachable electric fan according to claim 1, wherein: The air hood and the motor are respectively provided with a second magnet; when the air hood is connected to the motor, the air hood and the second magnets on the motor attract each other.

5. The easily detachable electric fan according to claim 1, wherein: The aperture of the connection hole close to the opening of the motor is the largest; the aperture of the connection hole decreases toward the side away from the motor.

6. The easily detachable electric fan according to claim 1, characterized in that: The wind cover includes a rear mesh cover and a front mesh cover; a stop is set on the outer edge of the rear mesh cover; the stop is set toward the front mesh cover, and a bayonet is opened on the stop; the bayonet is set perpendicular to the drive shaft; a card block is set on the inner side of the front mesh cover to be locked into the bayonet.

7. The easily detachable electric fan according to claim 6, characterized in that: The stop is recessed toward one side of the drive shaft to form a position-avoiding groove; the position-avoiding groove is connected to the bayonet.

8. The easily detachable electric fan according to claim 1, wherein: The driving shaft is provided with a flat position; The first blind hole is provided with a straight inner wall to match the flat part.

9. The easily detachable electric fan according to claim 1, wherein: A positioning hole is provided on the outer surface of the wind cover; and a positioning column is provided on the motor and extends into the positioning hole.

10. The easily detachable electric fan according to claim 1, characterized in that: A limiting protrusion is provided on the outer surface of the connecting member; a limiting groove is provided on the inner wall of the connecting hole; when the connecting member is extended into the connecting hole, the limiting protrusion is snapped into the limiting groove.

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