A lifting mechanism for an electric fan

Abstract

The application provides a lifting mechanism for an electric fan, which comprises a lifting assembly, a base and a column assembly, the column assembly is installed above the base, and the lifting assembly is installed inside the base and the column assembly; the lifting assembly comprises a motor, a polygonal rod is connected to a transmission end of the motor, the polygonal rod is inserted into a polygonal hole in a gear box, a threaded rod is connected to another threaded hole in the gear box in a matched mode, the polygonal rod is driven to rotate by the motor, and the gear box on the polygonal rod moves up and down on the threaded rod through gear transmission; the lifting structure of the electric fan uses the motor as a power source, cooperates with the polygonal rod to drive the gear box, drives the lifting column to move when the gear box moves up and down, and the gear box can move on the polygonal rod when moving up and down on the threaded rod, so that the fan part of the electric fan realizes double action of displacement and transmission, the whole lifting assembly works more smoothly, and the structure is simple and easy to operate.

Description

Technical Field

[0001] This invention relates to the field of home appliances, and more specifically to a lifting mechanism for an electric fan. Background Technology

[0002] With economic development, electric fans have become increasingly popular in people's lives, bringing them an excellent user experience.

[0003] An electric fan is a device that uses electricity to drive airflow. The fan inside rotates when powered on, creating a natural breeze to achieve a cooling effect. To better realize its function, height adjustment is often added to the fan's airflow section. Currently, most electric fans use a manual push-pull lever for adjustment, which is inconvenient. Furthermore, existing electric adjustment mechanisms use a single screw and motor drive to move the screw up and down, with the upper end of the screw fixing the fan section. This simple structure leads to a decrease in precision of the screw's threads over time, resulting in a loss of vertical adjustment capability. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting mechanism for an electric fan, which uses a double-bar transmission method to achieve vertical adjustment of the fan section, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A lifting mechanism for an electric fan includes a lifting assembly, a base, and a column assembly, wherein the column assembly is mounted above the base, and the lifting assembly is mounted inside the base and the column assembly.

[0007] The lifting assembly includes a motor, and a polygonal rod is connected to the drive end of the motor. The polygonal rod is inserted into a polygonal hole in the gearbox. A threaded rod is connected to another threaded hole in the gearbox. A first gear and a second gear that mesh with each other are fixed to the periphery of the polygonal hole and the threaded hole, respectively. A sliding block is also fixed to the top of the gearbox. The motor drives the polygonal rod to rotate, so that the gearbox on the polygonal rod, which uses gear transmission, moves up and down on the threaded rod.

[0008] Preferably, the base includes an upper base shell and a lower base shell, which are sealed and fixed together to form a cavity. The upper base shell has a conical peak, and a support plate is fixedly provided at the top end of the conical peak. The support plate has holes.

[0009] Preferably, the column assembly includes an outer column and a lifting column, the lifting column being embedded in the outer column and capable of sliding up and down relative to the outer column, and an upper slider being installed on the top of the outer column and fixed by an upper decorative piece.

[0010] Preferably, the bottom of the outer column is fixedly connected to the support plate, and the lifting column is fixedly connected to the gearbox via a lower slider.

[0011] Preferably, the motor is mounted on the upper shell of the base and is located in the cavity formed by the sealing and fixing of the upper shell and the lower shell of the base.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The electric fan lifting structure of the present invention uses a motor as a power source and is driven by a polygonal rod through a gearbox. When the gearbox moves up and down, it drives the lifting column to move, thereby realizing the up and down movement of the fan part of the electric fan. When the gearbox moves up and down on the threaded rod, it can also move on the polygonal rod, so that the fan part of the electric fan can achieve both displacement and transmission functions, making the entire lifting assembly work more smoothly. At the same time, the structure is simple and easy to operate. Attached Figure Description

[0014] Figure 1 This is an exploded view of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the lifting component structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the gearbox of the present invention;

[0017] Figure 4 This is a schematic diagram of the overall assembly of the concealed outer column of the present invention;

[0018] Figure 5 This is a schematic diagram of the overall assembly of the present invention;

[0019] Figure 6 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Lifting assembly; 2. Base; 3. Column assembly; 11. Motor; 12. Polygonal rod; 13. Gearbox; 14. Lower slider; 15. Threaded rod; 16. Polygonal hole; 17. Threaded hole; 21. Upper shell of base; 22. Lower shell of base; 23. Support plate; 31. Lifting column; 32. Outer column; 33. Upper slider; 34. Upper decorative piece; 35. Protrusion; 36. Groove; 37. First gear; 38. Second gear. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example:

[0023] Please see Figures 1 to 6 The present invention provides a technical solution:

[0024] A lifting mechanism for an electric fan includes a lifting assembly 1, a base 2, and a column assembly 3, wherein the column assembly 3 is mounted above the base 2, and the lifting assembly 1 is mounted inside the base 2 and the column assembly 3.

[0025] The lifting assembly 1 includes a motor 11, the transmission end of which is connected to a polygonal rod 12. The polygonal rod 12 is inserted into a polygonal hole 16 in a gearbox 13. A threaded rod 15 is fitted into another threaded hole 17 in the gearbox 13. A first gear 37 and a second gear 38 are respectively fixed around the polygonal hole 16 and the threaded hole 17, respectively, and they mesh with each other. A lower slider 14 is also fixed to the top of the gearbox 13. The lower slider 14 is fixed to the gearbox 13 by bolts. The motor 11 drives the polygonal rod 12 to rotate, so that the gearbox 13, which uses gear transmission (the first gear 37 on the polygonal rod 12 and the gearbox 13 on the threaded rod 15), moves up and down on the threaded rod 15. The polygonal rod 12 and the polygonal hole 16 are adapted to each other. The first gear 37 and the second gear 38 can both rotate in the gearbox 13, and the diameter of the first gear 37 is larger than the diameter of the second gear 38.

[0026] Specifically, the base 2 includes an upper base shell 21 and a lower base shell 22, which are sealed and fixed together to form a cavity. The upper base shell 21 has a conical peak, and a support plate 23 is fixedly provided at the top end of the conical peak. The support plate 23 has a hole, and a circular opening is provided at the center of the top of the conical peak. The support plate 23 has a hole for passing through the polygonal rod 12, and one end of the threaded rod 15 is fixed to the support plate 23.

[0027] Specifically, the column assembly 3 includes an outer column 32 and a lifting column 31. The lifting column 31 is embedded in the outer column 32 and can slide up and down relative to the outer column 32. The direction of lifting is restricted by the protrusion 35 on the inner side of the outer column 32 and the groove 36 on the outer side of the lifting column 31. An upper slider 33 is installed on the top of the outer column 32 and fixed by an upper decorative piece 34. The lifting column 31 can move up and down relative to the upper slider 33 and the lifting column 31.

[0028] Specifically, the bottom of the outer column 32 is fixedly connected to the support plate 23, and the bottom of the lifting column 31 is fixedly connected to the gearbox 13 through the lower slider 14. The lifting column 31 moves up and down through the up and down movement of the gearbox 13.

[0029] Specifically, the motor 11 is mounted on the upper shell 21 of the base and is located in the cavity formed by the sealing and fixing of the upper shell 21 and the lower shell 22 of the base.

[0030] When the device rises, the motor 11 drives the polygonal rod 12 to rotate, which in turn drives the first gear 37, which is fixed to the polygonal hole 16, to rotate synchronously inside the gearbox 13. The second gear 38, which is fixed to the threaded hole 17, will also rotate. The threaded hole 17 engages with the thread on the threaded rod 15, causing the gearbox 13 to move upward. The lifting column 31, which is connected to the gearbox 13 through the lower slider 14, will then move upward, thus achieving the function of upward adjustment.

[0031] When it is necessary to lower the column, simply reverse the rotation of motor 11 to drive gearbox 13 to move lifting column 31 downward, thereby achieving the lowering adjustment function.

[0032] All other parts of this invention not described herein are the same as existing technologies, or are known technologies, or can be implemented using existing technologies, and will not be described in detail here.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting mechanism for an electric fan, characterized in that: It includes a lifting assembly (1), a base (2) and a column assembly (3), wherein the column assembly (3) is installed above the base (2), and the lifting assembly (1) is installed inside the base (2) and the column assembly (3); The lifting assembly (1) includes a motor (11), the transmission end of which is connected to a polygonal rod (12). The polygonal rod (12) is inserted into a polygonal hole (16) in a gearbox (13). A threaded rod (15) is connected to another threaded hole (17) in the gearbox (13). A first gear (37) and a second gear (38) are fixed to the periphery of the polygonal hole (16) and the threaded hole (17) respectively. A sliding block (14) is also fixed to the top of the gearbox (13). The motor (11) drives the polygonal rod (12) to rotate, so that the gearbox (13) on the polygonal rod (12) moves up and down on the threaded rod (15). The base (2) includes an upper shell (21) and a lower shell (22). The upper shell (21) and the lower shell (22) are sealed and fixed to form a cavity. The upper shell (21) is provided with a conical peak. A support plate (23) is fixed at the top end of the conical peak. The support plate (23) is provided with holes.

2. The lifting mechanism for an electric fan according to claim 1, characterized in that: The column assembly (3) includes an outer column (32) and a lifting column (31). The lifting column (31) is embedded in the outer column (32) and can slide up and down relative to the outer column (32). An upper slider (33) is installed on the top of the outer column (32) and is fixed by an upper decorative piece (34).

3. A lifting mechanism for an electric fan according to claim 2, characterized in that: The bottom of the outer column (32) is fixedly connected to the support plate (23), and the lifting column (31) is fixedly connected to the gearbox (13) through the lower slider (14).

4. A lifting mechanism for an electric fan according to claim 1, characterized in that: The motor (11) is mounted on the upper shell (21) of the base and is located in the cavity formed by the upper shell (21) of the base and the lower shell (22) of the base.

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