High stepless adjusting structure of fan and fan thereof

Abstract

The application provides a height stepless adjusting structure of a fan and the fan, which comprises an upper pipe, a lower pipe and an inner pipe; the inner pipe is arranged in the upper pipe, one end of the inner pipe is slidably connected with one end of the lower pipe, the other end of the lower pipe is arranged outside one end of the upper pipe, at least one elastic mechanism is arranged at one end of the inner pipe, at least one locking part and at least one releasing part are arranged on the inner wall of the upper pipe, at least one elastic mechanism is arranged at one end of the inner pipe, when the elastic mechanism is located at the locking part, the upper pipe and the lower pipe are in a locking state, when the elastic mechanism is located at the releasing part, the upper pipe and the lower pipe are in a releasing state. The application realizes the adjustment and locking of the fan at any height in the stroke range, and realizes the blowing demand of the user at multiple heights. The application is convenient to operate without bending or squatting. The production size allowance is large, the efficiency is high, and the whole machine is stable.

Description

Technical Field

[0001] This invention relates to the field of fan technology, and in particular to a height-infinitely adjustable fan structure and the fan thereof. Background Technology

[0002] Fans are an indispensable household appliance, and with increasing demands, most modern fans now offer height adjustment. However, some fans on the market only have one blowing height, failing to meet users' needs for greater airflow. To adjust the blowing height, current technology generally employs the following methods: First, adding a detachable connecting tube allows for switching between two heights, a simple structure; second, tightening tapered threads locks the upper and lower tubes together, fixing the fan at the desired height; third, the body uses multiple nested telescopic tubes to achieve multiple height adjustments; fourth, a height-adjustable fan uses a thicker upper tube and thinner lower tube structure, with the thicker upper tube installed inside the body.

[0003] However, the first method presents the problem of storing the disconnected connecting tube, and only offers a few selectable heights, failing to meet users' needs for multi-height air blowing. The second method places the tightening sleeve on the main body, which affects the overall aesthetics of the machine and requires users to bend or squat to operate, resulting in a poor user experience. The third method has many joints, leading to large cumulative tolerances and potentially causing instability. In the fourth method, the locking device is often still located at a low point where the upper and lower tubes meet, requiring users to bend or squat to operate the locking device to fix the height when adjusting to the appropriate level, which is inconvenient.

[0004] To effectively address the aforementioned technical issues, a more flexible and comfortable height adjustment structure for the fan is needed. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a fan height stepless adjustment structure and the fan thereof, so as to effectively solve the problems existing in the background art.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A height-infinitely adjustable structure for a fan includes: an upper tube, a lower tube, and an inner tube; the inner tube is disposed inside the upper tube, one end of the inner tube is slidably connected to one end of the lower tube, the other end of the lower tube extends beyond one end of the upper tube, one end of the inner tube is provided with at least one elastic mechanism, the inner wall of the upper tube is provided with at least one locking part and at least one releasing part, one end of the inner tube is provided with at least one elastic mechanism, when the elastic mechanism is located in the locking part, the upper tube and the lower tube are in a locked state, when the elastic mechanism is located in the releasing part, the upper tube and the lower tube are in a released state.

[0008] As a further improvement of the present invention: the inner wall diameter of the locking part is smaller than the inner wall diameter of the releasing part.

[0009] As a further improvement of the present invention: the elastic mechanism includes a mounting groove and an elastic element, the mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0010] As a further improvement of the present invention: a knob is connected to the other end of the inner tube.

[0011] As a further improvement of the present invention: the knob and the inner tube are fixedly connected.

[0012] As a further improvement of the present invention: the knob and the inner tube are connected by a snap-fit.

[0013] As a further improvement of the present invention: an inner connector is provided at one end of the lower tube, and the bottom of the inner connector abuts against one end of the inner tube.

[0014] As a further improvement of the present invention: one end of the upper tube is slidably connected to the lower tube via an external connector.

[0015] As a further improvement of the present invention: the elastic element is a damping material.

[0016] As a further improvement of the present invention: the other end of the lower tube is connected to a chassis assembly.

[0017] A fan employs a stepless height adjustment structure as described in any one of the above claims, wherein the fan includes a head mounting bracket and a head assembly, the bottom of the head mounting bracket is connected to an upper tube, the head assembly is disposed above the head mounting bracket, and the head assembly is rotatably connected to the head mounting bracket.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By nesting a joint between the upper and lower tubes and pressing the elastic element with a knob, the fan can be adjusted and locked at any height within its stroke range, meeting the user's multi-height air blowing needs.

[0020] 2. When adjusting the height, users only need to lift or lower the machine head to the appropriate height and tighten the knob at the machine head position to lock and position it. There is no need to bend over or squat down, making the operation convenient.

[0021] 3. By controlling the upper and lower tubes with a single joint, the production size margin is large, the efficiency is high, and the overall machine stability is good.

[0022] 4. Compared with other stepped height locking methods, the parts in this application are simple, the processing efficiency is high, and the cost is also lower. Attached Figure Description

[0023] Figure 1 This is an exploded view of the structure of the present invention.

[0024] Figure 2 This is a schematic cross-sectional view of the structure of the present invention.

[0025] Figure 3 This is a schematic cross-sectional view of the upper part of the structure of the present invention.

[0026] Figure 4 This is a schematic cross-sectional view of the lower half of the structure of the present invention.

[0027] Figure 5 This is a schematic diagram of the inner tube structure of the present invention.

[0028] Figure 6 This is a schematic cross-sectional view of the elastic element in the relaxed state according to the present invention.

[0029] Figure 7 This is a schematic cross-sectional view of the elastic element under compression according to the present invention.

[0030] Figure 8 This is a schematic diagram of the knob structure of the present invention.

[0031] Figure 9 This is a schematic diagram of the head mounting bracket structure of the present invention.

[0032] Figure 10 This is a schematic diagram of the fan structure of the present invention.

[0033] Figure 11 This is a schematic diagram of the knob's movement position according to the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Upper tube 1; 2-Lower tube; 3-Inner tube; 5-Elastic mechanism; 11-Locking part; 12-Loosening part; 51-Mounting groove; 52-Elastic element; 6-Knob; 61-Snap ring; 31-Card; 62-Lever; 7-Inner connector; 71-Inner connection limiting surface; 32-Inner tube limiting surface; 8-Outer connector; 9-Chassis assembly; 100-Head mounting bracket; 101-Head assembly; 102-Arc section; 103-Fan; 104-Fan protective shell. Detailed Implementation

[0036] The present invention will now be further described in conjunction with the accompanying drawings and embodiments:

[0037] The following is Example 1:

[0038] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, the other end of the lower tube 2 extends out of one end of the upper tube 1, one end of the inner tube 3 is provided with at least one elastic mechanism 5, the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12, one end of the inner tube 3 is provided with at least one elastic mechanism 5, when the elastic mechanism 5 is located in the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state, when the elastic mechanism 5 is located in the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state.

[0039] In this embodiment, the upper tube 1 and lower tube 2 serve as the support structure for the fan. By adjusting the sliding distance of the lower tube 2 within the upper tube 1, the height of the fan can be adjusted. The inner tube 3 is disposed within the upper tube 1 and connected to the lower tube 2, used to enable the lower tube 2 to slide within the upper tube 1 and to lock the lower tube 2. The inner wall of the upper tube 1 is provided with a locking part 11 and a releasing part 12. When the inner tube 3 rotates, it drives the elastic mechanism 5 to move in a circumferential direction. When the elastic mechanism 5 is located at the releasing part 12, the upper tube 1 and lower tube 2 are in a released state, meaning they can slide relative to each other. At this time, the height of the fan body can be adjusted by stretching the upper and lower tubes, allowing for arbitrary height adjustment. When adjusting the height, rotating the inner tube 3 again drives the elastic mechanism 5 to the locking part 11, locking the upper tube 1 and lower tube 2 so that they cannot slide, thus completing their fixation.

[0040] In this embodiment, multiple elastic mechanisms 5 can be provided, and multiple locking parts 11 and releasing parts 12 can also be provided.

[0041] The following is Example 2:

[0042] This embodiment provides the following: Figure 1-7The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, the other end of the lower tube 2 extends out of one end of the upper tube 1, one end of the inner tube 3 is provided with at least one elastic mechanism 5, the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12, one end of the inner tube 3 is provided with at least one elastic mechanism 5, when the elastic mechanism 5 is located in the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state, when the elastic mechanism 5 is located in the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state.

[0043] Based on Embodiment 1, the structure of this embodiment will be described in further detail, as shown in the appendix. Figure 1 As shown, the inner diameter of the locking part 11 is smaller than the inner diameter of the releasing part 12. This allows the elastic mechanism 5 to reach a locking or releasing state as the space between the upper tube 1 and the lower tube 2 changes during movement.

[0044] The following is Example 3:

[0045] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, the other end of the lower tube 2 extends out of one end of the upper tube 1, one end of the inner tube 3 is provided with at least one elastic mechanism 5, the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12, one end of the inner tube 3 is provided with at least one elastic mechanism 5, when the elastic mechanism 5 is located in the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state, when the elastic mechanism 5 is located in the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state.

[0046] This embodiment is based on Embodiment 2, with optimized structure of its elastic mechanism 5, as shown in the attached figure. Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0047] In this embodiment, the mounting groove 51 is used to house the elastic element 52, which can lock the inner tube 3 through its own elastic properties. (See attached image) Figure 1As shown, specifically, the inner tube 3 is positioned between the upper tube 1 and the lower tube 2. The inner diameter of the inner wall of the upper tube 1 gradually decreases along the circumferential direction. The inner side of the elastic element 52 is attached to the lower tube 2, and its outer side is attached to the upper tube 1. By rotating the inner tube 3, it causes the elastic element 52 embedded in the mounting groove 51 to move circumferentially along the inner wall of the upper tube 1 and the outer wall of the lower tube 2. Since the inner diameter of the locking part 11 is smaller than the inner diameter of the releasing part 12, as the inner diameter gradually decreases, the elastic element 52 compresses the inner wall of the upper tube 1 and the outer wall of the lower tube 2 by means of the change in movement, thereby compressing the lower tube 2 and realizing the locking and fixing of the lower tube 2. Conversely, when the inner tube 3 is rotated in the direction that the inner diameter of the upper tube 1 gradually increases, the fixing of the lower tube 2 can be loosened. At this time, the sliding distance of the lower tube 2 in the inner tube 3 can be adjusted at will, that is, the extension and retraction of the lower tube 2 and the upper tube 1 can be adjusted at will, so as to achieve the adjustment of the fan height. After the adjustment is completed, the inner tube 3 is rotated in the opposite direction again to lock the lower tube 2.

[0048] The following is Example 4:

[0049] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, the other end of the lower tube 2 extends out of one end of the upper tube 1, one end of the inner tube 3 is provided with at least one elastic mechanism 5, the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12, one end of the inner tube 3 is provided with at least one elastic mechanism 5, when the elastic mechanism 5 is located in the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state, when the elastic mechanism 5 is located in the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state.

[0050] As attached Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0051] In this embodiment, based on Embodiment 2, the cross-section of the upper tube 1 is set to an ellipse, with the two ends of the shortest diameter of the ellipse being the locking part 11 and the two ends of the longest diameter being the releasing part 12. During rotation, if the elastic element 52 rotates towards the end with the shorter diameter, the space between the lower tube 2 and the upper tube 1 can be reduced, thereby forcing the elastic element 52 to press against both sides, thus locking the lower tube 2. Conversely, if the inner tube 3 drives the elastic element 52 towards the end with the longer diameter, the space between the lower tube 2 and the upper tube 1 can be increased, so that the elastic element 52 no longer presses against both sides. At this time, the lower tube 2 is released and can slide freely up and down, thereby adjusting its height.

[0052] The following is Example 5:

[0053] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, the other end of the lower tube 2 extends out of one end of the upper tube 1, one end of the inner tube 3 is provided with at least one elastic mechanism 5, the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12, one end of the inner tube 3 is provided with at least one elastic mechanism 5, when the elastic mechanism 5 is located in the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state, when the elastic mechanism 5 is located in the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state.

[0054] The structure of this embodiment will be described in further detail below, as shown in the appendix. Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0055] In this embodiment, the release part 11 is an arc-shaped groove. Thus, when the elastic mechanism 5 is in the position corresponding to the arc-shaped groove, i.e., the elastic element 52 is in the arc-shaped groove, it is in a released state. At this time, the lower tube 2 can slide freely to adjust the height. When locking is required, rotating the inner tube 3 pushes the elastic block, causing it to move in a circular motion along the inner wall of the upper tube 1. This allows the elastic element 52 to slide along the groove, gradually moving away from the arc surface. As the distance between the inner wall of the upper tube 1 and the outer wall of the lower tube 2 decreases, the elastic block is compressed, causing it to press against the outer wall of the lower tube 2, generating friction and thus fixing the lower tube 2. This locks the fan height within the required stroke. When readjustment is needed, simply rotate in the opposite direction. Compared to Embodiment 1, the arc-shaped groove structure of this embodiment makes the shape of the upper tube 1 more stable and less prone to deformation.

[0056] The following is Example Six:

[0057] This embodiment provides the following: Figure 1-7The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, and the other end of the lower tube 2 extends out of one end of the upper tube 1; one end of the inner tube 3 is provided with at least one elastic mechanism 5; the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12; when the elastic mechanism 5 is located at the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state; when the elastic mechanism 5 is located at the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state. The structure of this embodiment is further described in detail below. Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0058] To further facilitate the rotation of the inner tube 3, see attached... Figure 1-2 As shown in Figures 4 and 8, a knob 6 is connected to the other end of the inner tube 3. That is, a knob 6 is provided on the top of the inner tube 3, and the inner tube 3 can be rotated by rotating the knob 6.

[0059] Furthermore, the knob 6 is fixedly connected to the inner tube 3.

[0060] For example, the knob 6 can be connected to the inner tube 3 by screws, screws and threads, etc.

[0061] The following is Example 7:

[0062] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, and the other end of the lower tube 2 extends out of one end of the upper tube 1; one end of the inner tube 3 is provided with at least one elastic mechanism 5; the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12; when the elastic mechanism 5 is located at the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state; when the elastic mechanism 5 is located at the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state. The structure of this embodiment is further described in detail below. Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove is formed on the inner tube, and the elastic element is disposed in the mounting groove.

[0063] To further facilitate the rotation of the inner tube 3, see attached... Figure 1-2 As shown in Figures 4 and 8, a knob 6 is connected to the other end of the inner tube 3. That is, a knob 6 is provided on the top of the inner tube 3, and the inner tube 3 can be rotated by rotating the knob 6.

[0064] Furthermore, the knob 6 is connected to the inner tube 3 by a snap-fit ​​connection.

[0065] For details, see attached. Figure 5 , 8 As shown, the bottom of the knob 6 is provided with a buckle 61, while the top of the inner tube 3 is provided with a corresponding card 31. During installation, simply press down the knob 6 so that the card 31 is snapped into the buckle 61.

[0066] Furthermore, to facilitate the user's rotation of the knob 6, a lever 62 is provided on the knob 6, and the inner tube 3 can be rotated by rotating the lever 62.

[0067] The following is Example 8:

[0068] This embodiment provides the following: Figure 1-7 The illustrated fan height infinitely adjustable structure includes: an upper tube 1, a lower tube 2, and an inner tube 3; the inner tube 3 is disposed inside the upper tube 1, one end of the inner tube 3 is slidably connected to one end of the lower tube 2, and the other end of the lower tube 2 extends out of one end of the upper tube 1; one end of the inner tube 3 is provided with at least one elastic mechanism 5; the inner wall of the upper tube 1 is provided with at least one locking part 11 and at least one releasing part 12; when the elastic mechanism 5 is located at the locking part 11, the upper tube 1 and the lower tube 2 are in a locked state; when the elastic mechanism 5 is located at the releasing part 12, the upper tube 1 and the lower tube 2 are in a released state. The structure of this embodiment is further described in detail below. Figure 1 As shown, the inner wall diameter of the locking part 11 is smaller than the inner wall diameter of the releasing part 12. The elastic mechanism 5 includes a mounting groove 51 and an elastic element 52. The mounting groove 51 is formed on the inner tube 3, and the elastic element 52 is disposed in the mounting groove 51.

[0069] In this embodiment, furthermore, to prevent the lower tube 2 from separating from the inner tube 3 during sliding, as shown in the attached... Figure 1 As shown, one end of the lower tube 2 is provided with an inner connector 7, and the bottom of the inner connector 7 abuts against one end of the inner tube 3.

[0070] Specifically, the inner connector 7 is fixedly connected to the top of the lower tube 2 and is located inside the inner tube 3. The inner connection limiting surface 71 at the bottom of the inner connector 7 and the inner tube limiting surface 32 at the bottom of the inner tube 3 abut against each other at the maximum height, thereby preventing the inner connector 7 and the lower tube 2 from coming out of the upper tube 1.

[0071] To further ensure a stable connection between the lower pipe 2 and the upper pipe 1, as shown in the attached... Figure 2-3 As shown, one end of the upper tube 1 is slidably connected to the lower tube 2 via an external connector 8.

[0072] In this embodiment, the other end of the lower pipe 2 is connected to a chassis assembly 9, which supports the entire structure to prevent it from tipping over. The bottom of the lower pipe 2 is threaded, and it connects to the chassis assembly 9 via these threads.

[0073] In this embodiment, the elastic element 52 is a damping material.

[0074] The following is Example 9:

[0075] This embodiment provides the following: Figure 9-10 The fan shown is used in any one of the above embodiments one to six, which describes a fan height infinitely adjustable structure. The fan includes a head mounting bracket 100 and a head assembly 101. The bottom of the head mounting bracket 100 is connected to the upper tube 1. The head assembly 101 is disposed above the head mounting bracket 100. The head assembly 101 is rotatably connected to the head mounting bracket 100.

[0076] In this embodiment, the head unit mounting bracket 100 has two upwardly curved, symmetrically arranged arcs 102. The inner sides of the two arcs 102 are rotatably connected to both ends of the head unit assembly 101, allowing the head unit assembly 101 to be adjusted to any blowing angle according to the user's needs. The head unit assembly 101 is the driving component for fan blowing, including a fan 103 and a fan protective shell 104.

[0077] The center of the head mounting bracket 100 is connected to the inner tube 1, and a knob 5 is provided above it. Since the head assembly 101 is located above the head mounting bracket 100, the installation of the arc part 102 makes the two have a certain height distance. Therefore, the knob 5 is located in the middle of the two, with enough operating space to rotate the knob 5, which is convenient for the user.

[0078] Assembly process of the present invention:

[0079] First, take the upper tube 1, insert the lower side of the inner tube 1 onto the upper side of the upper tube 1, then place the elastic element 52 into the mounting groove 51 of the inner tube 1, and then insert the outer connector 8 onto the bottom side of the upper tube 1, fixing it to the upper tube 1 by means of buckles, etc., pressing the elastic element 52 to prevent it from falling out; then, take the inner connector 7 and insert it onto the upper side of the lower tube 2, fixing it to the inner tube 3 by means of buckles, etc., then insert the lower side of the lower tube 2 onto the upper side of the upper tube 1, and pass it out from the other side. The limiting surface of the inner connector 7 and the corresponding limiting surface of the inner tube 3 abut against each other at the extreme height to prevent the inner connector 7 and the lower tube 2 from coming out of the upper tube 1; finally, fix the knob 6 to the inner tube 3 by means of buckles, etc., thus completing the assembly of this structural component. The upper side of the upper tube 1 can be connected to the head assembly 101, and the lower side of the lower tube 2 can be connected to the chassis.

[0080] The process of using this invention:

[0081] As attached Figure 11 As shown, when knob 6 is in position a, the upper tube 1 and lower tube 2 are in a loose state, allowing the fan head to be pulled up to any height within its stroke. When the desired height is reached, the lever 62 of knob 6 is moved to position b. During this process, the mounting groove 51 of the inner tube 3 pushes the elastic element 52, causing it to move in a circular motion along the inner wall of the upper tube 1. This reduces the inner diameter, pushing the elastic element 52 radially inward and squeezing the outer wall of the lower tube 2, generating friction and thus fixing the lower tube 2 in place, achieving a locked position of the fan height within its stroke. When the height needs to be readjusted, knob 6 can be rotated back to position a to readjust the height and lock the fan in place again. This method eliminates the need to bend over or squat during operation, making it convenient.

[0082] The main function of this invention is to be applied to various electrical appliances that require height adjustment, especially in the field of fans. By operating the knob on the fan head and the squeezing action of the inner side of the upper tube, the damping plate is pressed and the lower tube is released, so as to achieve locking and positioning at any height within the fan stroke range, which meets the user's requirements for multiple height blowing. At the same time, this method has good overall machine stability and high production efficiency.

[0083] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described herein can be combined with each other as long as they do not conflict with each other. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus. In the description of this invention, it should be understood that the terms "upper end," "lower end," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are merely for the convenience of describing the invention and should not be construed as limiting the actual direction of use of the invention.

[0084] In summary, after reading this invention document, those skilled in the art can make various other corresponding modifications to the technical solutions and concepts based on this invention without creative mental effort, and all of these modifications fall within the scope of protection of this invention.

Claims

1. A height-infinitely adjustable structure for a fan, characterized in that, include: The system comprises an upper tube, a lower tube, and an inner tube. The inner tube is disposed inside the upper tube, with one end of the inner tube slidably connected to one end of the lower tube. The other end of the lower tube extends beyond one end of the upper tube. The inner tube is positioned between the upper and lower tubes. The inner wall of the upper tube is provided with at least one locking part and at least one releasing part. One end of the inner tube is provided with at least one elastic mechanism. When the elastic mechanism is located in the locking part, the upper and lower tubes are in a locked state. When the elastic mechanism is located in the releasing part, the upper and lower tubes are in a released state. The inner wall diameter of the locking part is smaller than that of the releasing part; the elastic mechanism includes a mounting groove and an elastic element. The mounting groove is opened on the inner tube, and the elastic element is installed in the mounting groove; a knob is connected to the other end of the inner tube. The knob is located at the top of the inner tube. Rotating the knob controls the rotation of the inner tube, thereby driving the elastic mechanism to move between the locking part and the releasing part.

2. The stepless height adjustment structure for a fan according to claim 1, characterized in that, The knob is fixedly connected to the inner tube.

3. The height-infinitely-adjustable structure for a fan according to claim 2, characterized in that, The knob is connected to the inner tube by a snap-fit ​​connection.

4. The height-infinitely-adjustable structure for a fan according to claim 1, characterized in that, One end of the lower tube is provided with an inner connector, the bottom of which abuts against one end of the inner tube.

5. The height-infinitely-adjustable structure for a fan according to claim 1, characterized in that, One end of the upper tube is slidably connected to the lower tube via an external connector.

6. The height-infinitely-adjustable structure for a fan according to claim 1, characterized in that, The other end of the lower tube is connected to a chassis assembly.

7. A fan, employing a stepless height adjustment structure as described in any one of claims 1-6, characterized in that, The fan includes a head mounting bracket and a head assembly. The bottom of the head mounting bracket is connected to the upper tube, and the head assembly is disposed on the top of the head mounting bracket. The head assembly and the head mounting bracket are rotatably connected.

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