Waterproof structure of tower fan

Abstract

The utility model relates to tower fan technical field discloses a waterproof structure of tower fan, including the baffle, fixedly installed on the baffle and the bottom cover subassembly of open mouth upwards, the open mouth downward upper cover subassembly of being located bottom cover subassembly top and bottom cover subassembly coaxial and mutual separation, the sleeve staggered arrangement of bottom cover subassembly and upper cover subassembly forms the labyrinth passage, the water outlet of being located the labyrinth passage below, the sealing element of upper cover subassembly middle part, through setting up the labyrinth passage, utilize air resistance and the complex change direction of path many times, increase the resistance of liquid penetration, effectively prevent the direct invasion of liquid, open the water outlet on the bottom cover subassembly of forming the labyrinth passage, cooperate with the baffle and the drain of setting up obliquely, can discharge liquid in time, avoid the accumulation of liquid in the equipment inside, set up the sealing element and carry out the key plugging of motor shaft in it, prevent water from the top of upper cover subassembly along motor shaft gap and flow to the below drive motor, realize all -round waterproof.

Description

Technical Field

[0001] This utility model relates to the field of tower fan technology, and in particular to a waterproof structure for tower fans. Background Technology

[0002] Tower fans, also known as impeller fans or vertical airflow fans, are widely popular due to their small footprint, gentle airflow, and stylish appearance. They typically contain a vertically mounted cylindrical impeller, which is driven by a motor located at the bottom of the impeller via a motor shaft.

[0003] However, existing tower fans have some shortcomings in terms of waterproofing. Because the motor needs to drive the upper impeller, the motor shaft must extend upwards from the base of the tower fan and pass through the internal structure. This through-hole becomes a weak point in waterproofing. In daily use, there may be accidental liquid splashes onto the tower fan, condensation in humid environments, or water ingress during cleaning and maintenance. Once these liquids enter the tower fan, they can easily seep along the gaps in the motor shaft into the drive motor and control circuitry below, causing short circuits, burnout of the motor, or circuit failures. This not only seriously affects the product's lifespan but also poses a significant safety hazard. Utility Model Content

[0004] To address at least one of the problems existing in the prior art, this utility model provides a waterproof structure for a tower fan.

[0005] A waterproof structure for a tower fan, comprising:

[0006] partition;

[0007] The bottom cover assembly is fixedly mounted on the partition plate, with its opening facing upwards;

[0008] The upper cover assembly is located above the lower cover assembly, is coaxial with and separated from the lower cover assembly, and has its opening facing downwards;

[0009] Both the bottom cover assembly and the top cover assembly include at least one sleeve, and the sleeves of the two are staggered to form a labyrinthine channel.

[0010] The sleeve of the bottom cover assembly has several water outlets located below the labyrinthine channel;

[0011] The upper cover assembly has a sealing element in the middle.

[0012] In some embodiments, the enclosure is also included, with the partition horizontally disposed inside the enclosure and a drain outlet provided on one side of the enclosure; a drainage area is recessed at one end of the partition near the drain outlet, the drainage area is connected to the drain outlet, and the partition is inclined downward toward the drainage area.

[0013] In some embodiments, a base protrudes from the center of the partition, and the top of the base is inclined with a higher center and lower edges.

[0014] In some embodiments, a fan wheel is provided above the partition, a drive motor is provided below the partition, a mounting shell extends from the bottom of the fan wheel, a motor shaft is provided at the top of the drive motor, the motor shaft is fixedly connected to the upper cover assembly, and the motor shaft passes through the bottom cover assembly and the upper cover assembly in sequence and is fixedly connected to the mounting shell.

[0015] In some embodiments, the bottom cover assembly includes a first sleeve and a second sleeve, the first sleeve and the second sleeve being integrally connected to the base, the first sleeve being disposed on the outer ring of the second sleeve, the highest point of the first sleeve being lower than the highest point of the second sleeve, and both the first sleeve and the second sleeve having corresponding water outlets.

[0016] In some embodiments, the bottom cover assembly further includes a third sleeve that extends through the middle of the base and is integrally connected thereto. The bottom of the third sleeve has a first through hole. The highest point of the third sleeve is higher than the highest point of the second sleeve.

[0017] In some embodiments, the top cover assembly includes a fourth sleeve and a fifth sleeve. The fourth sleeve is disposed on the outer ring of the fifth sleeve and integrally connected thereto. A second through hole is formed in the middle of the fifth sleeve, and the sealing element is disposed within the second through hole. The sidewall of the fourth sleeve is located between the sidewalls of the first sleeve and the second sleeve and does not contact the base. The sidewall of the fifth sleeve is located between the sidewalls of the second sleeve and the third sleeve and does not contact the base, forming the labyrinthine channel. The height of the top layer inside the fifth sleeve is greater than the height of the top layer inside the fourth sleeve. The highest point of the first sleeve is higher than the lowest point of the fourth sleeve.

[0018] In some embodiments, the top cover assembly further includes a sixth sleeve, which is disposed at the bottom of the second through hole and integrally connected with the fifth sleeve. The top of the sixth sleeve has a third through hole with a diameter smaller than that of the second through hole. The second through hole and the sixth sleeve form an L-shaped groove, and the sealing element is disposed in the L-shaped groove.

[0019] In some embodiments, the seal is hollow in the middle and its inner side abuts against the outer periphery of the motor shaft. The top of the fifth sleeve is fixedly provided with an annular plate, and the bottom of the annular plate near the center is fitted with the top of the seal.

[0020] In some embodiments, the motor shaft side is recessed with a first limiting groove and a second limiting groove; the top of the ring plate is provided with a first limiting strip, the top of the first limiting strip abutting against the bottom of the mounting shell; the bottom of the sixth sleeve is provided with a second limiting strip, the first limiting strip is engaged in the first limiting groove, and the second limiting strip is engaged in the second limiting groove.

[0021] In some embodiments, the motor shaft passes through the second limiting strip, the first through hole, the sixth sleeve, the third through hole, the seal, the ring plate, and the first limiting strip from bottom to top, and is fixedly connected to the mounting shell.

[0022] In some embodiments, a limiting block protrudes from the inner side of the outer shell, and a groove is recessed from the outer side of the partition, the groove being fixedly connected to the limiting block.

[0023] In some embodiments, a guide ring is provided at the bottom outer side of the fourth sleeve.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] (1) Achieving efficient labyrinth waterproofing: By setting up bottom cover components and top cover components with opposite and mutually separated openings, and setting their sleeves in an interlaced manner, a tortuous labyrinth channel is formed. This labyrinth channel utilizes air resistance and multiple and complex changes in the path to greatly increase the resistance to liquid penetration, effectively preventing the direct intrusion of liquid. Even if water pressure or water mist attempts to pass through, it will be blocked, slowed down and turned back multiple times in the tortuous path of the labyrinth channel. Its kinetic energy is fully consumed, and it will ultimately be unable to overcome this "air wall", thus achieving efficient passive waterproofing.

[0026] (2) Possesses active drainage and dredging capabilities: Water outlets are opened on the bottom cover assembly that forms a labyrinthine channel, and in conjunction with the inclined baffles and drainage outlets, the small amount of liquid that successfully breaks through the labyrinthine channel or condenses can be collected in time and discharged to the outside of the equipment, avoiding the accumulation of liquid inside the equipment and eliminating the risk of water accumulation.

[0027] (3) Ensure reliable sealing of key parts: A special seal is set in the middle of the upper cover assembly to block the motor shaft that runs through it, preventing water from flowing from the top of the upper cover assembly along the gap of the motor shaft to the drive motor below, thus achieving all-round waterproofing. Attached Figure Description

[0028] Figure 1 A three-dimensional diagram of a waterproof structure for a tower fan;

[0029] Figure 2 This is a partial structural diagram of a waterproof structure for a tower fan;

[0030] Figure 3 for Figure 1 AA cross-section view;

[0031] Figure 4 for Figure 3 A magnified view of section B.

[0032] The correspondence between the reference numerals and the component names is as follows:

[0033] 1. Outer casing; 11. Drain outlet; 12. Limiting block; 13. Air inlet; 14. Air outlet;

[0034] 2. Partition; 21. Drainage area; 22. Base; 23. Groove;

[0035] 3. Wind turbine; 31. Mounting housing;

[0036] 4. Drive motor; 41. Motor shaft; 411. First limiting groove; 412. Second limiting groove;

[0037] 5. Bottom cover assembly; 51. Outlet; 52. First sleeve; 53. Second sleeve; 54. Third sleeve; 541. First through hole;

[0038] 6. Top cover assembly; 61. Fourth sleeve; 611. Flow guide ring; 62. Fifth sleeve; 621. Second through hole; 63. Sixth sleeve; 631. Third through hole; 632. Second limiting strip; 64. L-shaped groove;

[0039] 7. Maze-like passageways;

[0040] 8. Seals;

[0041] 9. Ring plate; 91. First limit bar. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0044] Some embodiments of this utility model are described below with reference to the accompanying drawings.

[0045] like Figures 1 to 4 As shown, this embodiment discloses a waterproof structure for a tower fan, including:

[0046] Partition 2 serves as the installation base for the waterproof structure;

[0047] The bottom cover assembly 5 is fixedly mounted on the partition plate 2, with its opening facing upwards;

[0048] The upper cover assembly 6 is located above the lower cover assembly 5, is coaxial with the lower cover assembly 5 and is separated from it, and its opening faces downward;

[0049] Both the bottom cover assembly 5 and the top cover assembly 6 include at least one sleeve, and the sleeves of the two are staggered, that is, the sleeve of the top cover assembly 6 is inserted into the gap of the sleeve of the bottom cover assembly 5, and the staggered layout forms a tortuous labyrinthine channel 7 between the two. The falling liquid flows along this tortuous path, and its kinetic energy and penetration ability will be greatly weakened.

[0050] The sleeve of the bottom cover assembly 5 has several water outlets 51 located below the labyrinth channel 7. Liquid that has been collected and blocked by the labyrinth channel 7 can be discharged in time through the water outlets 51 to prevent the interior from accumulating and flooding in, thereby further preventing water from flowing into the drive motor 4 below.

[0051] The upper cover assembly 6 is provided with a sealing element 8 in the middle. The sealing element 8 can be set as an O-ring for key sealing of the motor shaft 41 that passes through it, further preventing water from flowing into the drive motor 4 from the top along the gap of the motor shaft 41, thereby improving the overall waterproof performance.

[0052] Working principle:

[0053] When liquid enters above the baffle 2, it falls from above and is first blocked and turbulent by the labyrinthine channel 7 formed by the staggered sleeves, which slows down and changes its flow direction. Then, the blocked liquid is discharged onto the baffle 2 through the outlet 51, so that the water cannot flow through the labyrinthine channel 7 and flow below the baffle 2. When the liquid falling on the top of the upper cover assembly 6 flows down, it is blocked by the seal 8, which can prevent water from flowing through the motor shaft 41 to the drive motor 4. This makes the present invention form a multi-protection system of "labyrinthine blocking, orderly diversion, and key sealing".

[0054] Specifically, when liquid enters the spacer from the air inlet or outlet, after rinsing the impeller, the liquid first reaches the spacer 2. As the liquid gradually increases, most of the liquid will be blocked by the first sleeve 52 and fall into the drainage area along the inclined spacer 2, and be discharged from the drain outlet. A small portion of the liquid may enter the labyrinth channel, but then this portion of liquid will be discharged back to the spacer 2 from the outlet along the inclined base. Even if high-pressure or high-flow liquid rushes into the tower fan and enters the labyrinth channel, it will be blocked by multiple sleeves with height differences, thus preventing it from entering the innermost sleeve.

[0055] This invention utilizes a bottom cover assembly 5 and a top cover assembly 6 with opposite and separated openings, and their sleeves are staggered to form a tortuous labyrinthine channel 7. This labyrinthine channel 7, by utilizing air resistance and multiple complex changes in the path, greatly increases the resistance to liquid penetration, effectively preventing direct liquid intrusion. Even if water pressure or water mist attempts to pass through, it will be blocked, slowed down, and turned back multiple times in the tortuous path of the labyrinthine channel, and its kinetic energy will be fully consumed, ultimately unable to overcome this "air wall," achieving highly efficient passive waterproofing. A water outlet 51 is opened on the bottom cover assembly 5 that forms the labyrinthine channel 7, and in conjunction with the inclined partition 2 and drain outlet 11, it can promptly collect and discharge a small amount of liquid that successfully breaks through the labyrinthine channel or condenses outside the equipment, avoiding the accumulation of liquid inside the equipment and eliminating the risk of water accumulation. A special sealing element 8 is set in the middle of the top cover assembly 6 to focus on sealing the motor shaft 41 that passes through it, preventing water from flowing from the top of the top cover assembly 6 along the gap of the motor shaft 41 into the drive motor 4 below, achieving all-round waterproofing.

[0056] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further discloses: it also includes a housing 1, the partition 2 is horizontally disposed inside the housing 1, dividing the inner cavity into upper and lower parts, wherein the air inlet 13 and air outlet 14 of the tower fan are both disposed in the upper part, while the drive motor 4 and electrical control box and other electrical components are disposed in the lower part; a drain outlet 11 is provided on one side of the housing 1; a drainage area 21 is recessed at one end of the partition 2 near the drain outlet 11, the drainage area 21 is connected to the drain outlet 11, the partition 2 is inclined downward toward the drainage area 21, and by utilizing the principle of gravity flow of liquid, it is ensured that all liquid dripping on the partition 2 can automatically and quickly flow to the drainage area 21, and then be discharged from the drain outlet 11 outside the tower fan, effectively solving the problem of internal water accumulation, and allowing users to clean the tower fan without disassembly, directly flushing water into the interior from the air inlet or air outlet, and the wastewater will automatically be discharged from the drain outlet 11, greatly facilitating the user's cleaning needs.

[0057] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: a base 22 protrudes from the middle of the partition 2, and the top of the base 22 is inclined with a high center and low edges, which can guide the liquid dripping onto the top surface of the base 22 to flow to the surrounding edges, thereby avoiding the accumulation of liquid in the central area and further preventing the liquid from flowing into the drive motor 4 below.

[0058] like Figure 3As shown, in addition to the features of the above embodiments, this embodiment further discloses that: a windmill 3 is provided above the partition 2, a drive motor 4 is provided below the partition 2, a mounting shell 31 extends from the bottom of the windmill 3, a motor shaft 41 is provided at the top of the drive motor 4, the motor shaft 41 is fixedly connected to the upper cover assembly 6, the drive motor 4 drives the motor shaft 41 to rotate when it runs, the motor shaft 41 drives the upper cover assembly 6 and the windmill 3 to rotate synchronously, and the motor shaft 41 passes through the bottom cover assembly 5 and the upper cover assembly 6 in sequence and is fixedly connected to the mounting shell 31.

[0059] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: the bottom cover assembly 5 includes a first sleeve 52 and a second sleeve 53, the first sleeve 52 and the second sleeve 53 are integrally connected with the base 22 to ensure structural strength and sealing; the first sleeve 52 is located on the outer ring of the second sleeve 53, and the highest point of the first sleeve 52 is lower than the highest point of the second sleeve 53. The height difference design ensures that after the liquid passes over the first sleeve 52, it will first come into contact with the outer wall of the second sleeve 53, and be further guided and disturbed, increasing the waterproof effect of the labyrinth channel 7, and also preventing the liquid from accumulating in the labyrinth channel 7; both the first sleeve 52 and the second sleeve 53 are provided with corresponding outlets 51 for smoothly and timely discharge of the liquid collected between the two sleeves.

[0060] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: the bottom cover assembly 5 also includes a third sleeve 54, which penetrates the middle of the base 22 and is integrally connected to it. The bottom of the third sleeve 54 has a first through hole 541 for the motor shaft 41 to pass through, so that when the drive motor 4 is running, the motor shaft 41 can drive the fan to rotate without obstruction, ensuring the performance of the tower fan. The highest point of the third sleeve 54 is higher than the highest point of the second sleeve 53, so that liquid cannot overcome the height difference to enter the third sleeve 54.

[0061] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: the top cover assembly 6 includes a fourth sleeve 61 and a fifth sleeve 62. The fourth sleeve 61 is disposed on the outer ring of the fifth sleeve 62 and is integrally connected to it to ensure sealing. A second through hole 621 is opened in the middle of the fifth sleeve 62, and the sealing member 8 is disposed in the second through hole 621 to prevent liquid from seeping in from the second through hole 621, thereby ensuring the sealing of the top of the top cover assembly 6. The height of the top layer inside the fifth sleeve 62 is greater than the height of the top layer inside the fourth sleeve 61, further preventing liquid from exceeding this height difference to enter the third sleeve 54.

[0062] The sidewall of the fourth sleeve 61 is located between the sidewalls of the first sleeve 52 and the second sleeve 53, and does not contact the base 22. The sidewall of the fifth sleeve 62 is located between the sidewalls of the second sleeve 53 and the third sleeve 54, and also does not contact the base 22, forming the labyrinthine channel 7. The staggered sleeves form a tortuous labyrinthine channel 7, and the bottom cover assembly 5 does not affect the rotation of the top cover assembly 6. Simultaneously, the highest point of the first sleeve 52 is higher than the lowest point of the fourth sleeve 61, preventing water from directly flowing in from below the fourth sleeve 61; instead, the water is first blocked by the first sleeve 52.

[0063] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: the upper cover assembly 6 also includes a sixth sleeve 63, the sixth sleeve 63 is disposed at the bottom of the second through hole 621 and is integrally connected with the fifth sleeve 62, the top of the sixth sleeve 63 is provided with a third through hole 631, the diameter of the third through hole 631 is smaller than the diameter of the second through hole 621, the size difference causes the second through hole 621 and the sixth sleeve 63 to form an L-shaped groove 64, the sealing member 8 is disposed in the L-shaped groove 64, the L-shaped groove 64 provides a stable and reliable mounting base for the sealing member 8, preventing it from shifting due to vibration.

[0064] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further discloses that: the seal 8 has a hollow center and its inner side abuts against the outer periphery of the motor shaft 41 to achieve a rotary dynamic seal; the top of the fifth sleeve 62 is fixedly provided with an annular plate 9, and the bottom of the annular plate 9 near the center is fitted with the top of the seal 8, so that the seal 8 is pressed and positioned from top to bottom, preventing the seal 8 from loosening in the axial direction and ensuring the long-term effectiveness of the seal.

[0065] like Figure 4 As shown, in addition to the features of the above embodiments, in order to achieve reliable connection and transmission between the upper cover assembly 6 and the motor shaft 41, this embodiment further discloses: the motor shaft 41 is recessed on the side with a first limiting groove 411 and a second limiting groove 412; the top of the ring plate 9 is provided with a first limiting strip 91, the top of the first limiting strip 91 abuts against the bottom of the mounting shell 31, which can further enhance the sealing performance; the bottom of the sixth sleeve 63 is provided with a second limiting strip 632. During assembly, the first limiting strip 91 is engaged in the first limiting groove 411, and the second limiting strip 632 is engaged in the second limiting groove 412, so that the upper cover assembly 6 and the motor shaft 41 are circumferentially positioned and fixed, and can rotate synchronously.

[0066] like Figure 4As shown, in addition to the features of the above embodiments, in order to clarify the spatial positional relationship between the motor shaft 41 and other components, this embodiment further discloses that: the motor shaft 41 passes through the second limiting strip 632, the first through hole 541, the sixth sleeve 63, the third through hole 631, the seal 8, the ring plate 9, and the first limiting strip 91 from bottom to top, and is fixedly connected to the mounting shell 31.

[0067] like Figure 2 As shown, in addition to the features of the above embodiments, in order to facilitate the positioning and installation of the partition 2 in the outer shell 1, this embodiment further discloses that: a limiting block 12 is protruding on the inner side of the outer shell 1, and a groove 23 matching the limiting block 12 is recessed on the outer side of the partition 2. The groove 23 is fixedly connected to the limiting block 12, which can realize the rapid and accurate positioning and fixing of the partition 2.

[0068] like Figure 4 As shown, in addition to the features of the above embodiments, in order to optimize the drainage path, this embodiment further discloses that: a guide ring 611 is provided at the bottom of the outer side of the fourth sleeve 61. The guide ring 611 can be an outward and downward extending slope or flange, and its function is to actively guide the liquid flowing down the outer wall of the fourth sleeve 61 outward, thereby avoiding the liquid from accumulating on the inner wall.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0070] The embodiments described above are merely illustrative of several implementations of this utility model, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waterproof structure for a tower fan, characterized in that, include: Partition (2); The bottom cover assembly (5) is fixedly mounted on the partition plate (2) with its opening facing upward; The upper cover assembly (6) is located above the lower cover assembly (5), is coaxial with the lower cover assembly (5) and separated from it, and its opening faces downward; Both the bottom cover assembly (5) and the top cover assembly (6) include at least one sleeve, and the sleeves of the two are staggered to form a maze-like channel (7); The sleeve of the bottom cover assembly (5) has several water outlets (51) located below the labyrinth channel (7); The upper cover assembly (6) is provided with a sealing element (8) in the middle.

2. The waterproof structure of a tower fan according to claim 1, characterized in that, It also includes an outer shell (1), the partition (2) is horizontally disposed inside the outer shell (1), and a drain outlet (11) is provided on one side of the outer shell (1); a drainage area (21) is recessed at one end of the partition (2) near the drain outlet (11), the drainage area (21) is connected to the drain outlet (11), and the partition (2) is inclined downward toward the drainage area (21).

3. The waterproof structure of a tower fan according to claim 1, characterized in that, The partition (2) has a base (22) protruding from the middle, and the top of the base (22) is inclined with the middle being higher and the edges being lower.

4. The waterproof structure of a tower fan according to claim 1, characterized in that, A fan wheel (3) is provided above the partition (2), and a drive motor (4) is provided below the partition (2). A mounting shell (31) extends from the bottom of the fan wheel (3). A motor shaft (41) is provided at the top of the drive motor (4). The motor shaft (41) is fixedly connected to the upper cover assembly (6). The motor shaft (41) passes through the bottom cover assembly (5) and the upper cover assembly (6) in sequence and is fixedly connected to the mounting shell (31).

5. The waterproof structure of a tower fan according to claim 3, characterized in that, The bottom cover assembly (5) includes a first sleeve (52) and a second sleeve (53). The first sleeve (52) and the second sleeve (53) are integrally connected to the base (22). The first sleeve (52) is located on the outer ring of the second sleeve (53). The highest point of the first sleeve (52) is lower than the highest point of the second sleeve (53). Both the first sleeve (52) and the second sleeve (53) have corresponding water outlets (51).

6. The waterproof structure of a tower fan according to claim 5, characterized in that, The bottom cover assembly (5) also includes a third sleeve (54), which penetrates the middle of the base (22) and is integrally connected to it. The bottom of the third sleeve (54) is provided with a first through hole (541), and the highest point of the third sleeve (54) is higher than the highest point of the second sleeve (53).

7. The waterproof structure of a tower fan according to claim 4, characterized in that, The upper cover assembly (6) includes a fourth sleeve (61) and a fifth sleeve (62). The fourth sleeve (61) is disposed on the outer ring of the fifth sleeve (62) and is integrally connected with it. A second through hole (621) is opened in the middle of the fifth sleeve (62), and the sealing element (8) is disposed in the second through hole (621).

8. The waterproof structure of a tower fan according to claim 7, characterized in that, The upper cover assembly (6) also includes a sixth sleeve (63), which is located at the bottom of the second through hole (621) and is integrally connected with the fifth sleeve (62). The top of the sixth sleeve (63) is provided with a third through hole (631), the diameter of which is smaller than that of the second through hole (621). The second through hole (621) and the sixth sleeve (63) form an L-shaped groove (64), and the sealing element (8) is located in the L-shaped groove (64).

9. The waterproof structure of a tower fan according to claim 8, characterized in that, The seal (8) has a hollow center and its inner side abuts against the outer periphery of the motor shaft (41). The top of the fifth sleeve (62) is fixedly provided with a ring plate (9), and the bottom of the ring plate (9) near the center is fitted with the top of the seal (8).

10. The waterproof structure of a tower fan according to claim 9, characterized in that, The motor shaft (41) is recessed on the side with a first limiting groove (411) and a second limiting groove (412); the top of the ring plate (9) is provided with a first limiting strip (91), the top of the first limiting strip (91) abuts against the bottom of the mounting shell (31); the bottom of the sixth sleeve (63) is provided with a second limiting strip (632), the first limiting strip (91) is engaged in the first limiting groove (411), and the second limiting strip (632) is engaged in the second limiting groove (412).

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