A dual-purpose fan

Abstract

This application relates to the field of fans, and more particularly to a dual-purpose fan, comprising: a fan head assembly, a base assembly, and a vertical tube assembly; the vertical tube assembly consists of several vertical tubes, and when the multiple vertical tubes are connected end-to-end to form a first support structure, the fan head assembly and the base assembly are respectively installed at both ends of the first support structure to form a vertical fan; when the multiple vertical tubes are respectively connected to the fan head assembly to form a second support structure, the base assembly is installed on the air outlet surface of the fan head assembly to form a desktop fan. Compared with the prior art, this application breaks through the single-form limitation of traditional fans, significantly reduces the user's purchase and storage costs through component reuse, and requires no additional auxiliary components during structural conversion, ensuring the reliability and convenience of dual-mode switching.

Description

Technical Field

[0001] This application relates to the field of fan technology, and more particularly to a dual-purpose fan. Background Technology

[0002] In traditional fan products, upright fans and desktop fans typically employ independent structural designs. Upright fans rely on an integrated support rod and a heavy-duty base for stability, while desktop fans often use short legs or a fixed-height column structure. This means that a single product cannot simultaneously meet the airflow needs of large spaces for floor placement and the 360-degree surround airflow requirements of desktop scenarios. Users need to purchase two types of fans for different usage scenarios, which not only increases purchase costs but also wastes space due to the overlapping storage space of the two products. Furthermore, current technology lacks a modular design solution that allows for free switching between the two forms through component reconfiguration. Utility Model Content

[0003] This application provides a dual-purpose fan to solve the technical problem that the prior art lacks a modular design scheme that can freely switch between two forms through component reconfiguration.

[0004] This application provides a dual-purpose fan, including: a fan head assembly, a base assembly, and a vertical tube assembly; the vertical tube assembly is composed of a plurality of vertical tubes, and when the plurality of vertical tubes are connected end to end to form a first support structure, the fan head assembly and the base assembly are respectively installed at both ends of the first support structure to form a vertical fan; when the plurality of vertical tubes are respectively connected to the fan head assembly to form a second support structure, the base assembly is installed on the air outlet surface of the fan head assembly to form a desktop fan.

[0005] Furthermore, the first support structure is composed of three vertical tubes connected end to end. The three vertical tubes include a top vertical tube, a middle vertical tube, and a bottom vertical tube. One end of the top vertical tube is detachably connected to the fan head assembly, and the other end is detachably connected to the middle vertical tube. One end of the bottom vertical tube is detachably connected to the foot plate assembly, and the other end is detachably connected to the middle vertical tube.

[0006] Furthermore, the second support structure is a tripod structure, and the back of the fan head assembly is provided with several mounting holes, in which the ground tube, the middle tube, and the bottom tube are respectively installed.

[0007] Furthermore, the vertical central tube is configured the same as the vertical upper tube. The vertical central tube is provided with a female end, a first DC power socket, a first pressure cover, a first DC connector and a first male end. The female end, the first DC power socket, the first pressure cover, the first DC connector and the first male end are connected in series in the vertical central tube through connecting wires.

[0008] Furthermore, the underground pipe is equipped with a DC power socket board, a second DC power socket, a second cover, a second DC connector, and a second male terminal block. The DC power socket board, the second DC power socket, the second cover, the second DC connector, and the second male terminal block are connected in series inside the underground pipe via connecting wires.

[0009] Furthermore, the vertical base pipe is provided with a power port, which is connected to an external power adapter.

[0010] Furthermore, the footplate assembly includes a footplate base plate and an air vent grille, the air vent grille being mounted on the footplate base plate, and the bottom of the footplate base plate having a concave arc-shaped structure.

[0011] Furthermore, when the dual-purpose fan is in the form of a desktop fan, the air outlet surface of the fan head assembly faces the base plate of the footplate.

[0012] Furthermore, the fan head assembly includes a fan housing, fan blades, and a drive motor. The fan blades are installed inside the fan housing, the drive motor is installed on the back of the fan housing, the fan blades are driven by the drive motor, and the drive motor is rotatably connected to the vertical tube assembly.

[0013] Furthermore, when the dual-purpose fan is in the form of a desktop fan, the second DC connector in the vertical base tube is electrically connected to the drive motor.

[0014] The technical solution provided in this application has the following advantages compared with the prior art:

[0015] This application effectively solves the technical contradiction of traditional fans being unable to simultaneously support both vertical and desktop use through innovative structural reconfiguration of modular components. Specifically, the detachable connection of the vertical tube assembly allows it to be connected end-to-end to form a floor support structure or connected separately to form a desktop support structure. Combined with the functional conversion of the base assembly between the two modes (serving as a load-bearing base in vertical mode and as an air guide diffuser in desktop mode), a single product can simultaneously meet the differentiated needs of directional airflow in large spaces and circumferential airflow on desktops. Compared to existing technologies, this application breaks through the single-form limitation of traditional fans, significantly reducing user purchase and storage costs through component reuse, and requiring no additional auxiliary components during structural conversion, ensuring the reliability and convenience of switching between dual modes. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 A structural schematic diagram of a vertical fan form of a dual-purpose fan provided in an embodiment of this application;

[0020] Figure 2 This is a structural diagram from another perspective of the figure;

[0021] Figure 3 for Figure 1 Structural sectional view;

[0022] Figure 4 for Figure 1 Exploded view of the vertical central pipe in the middle;

[0023] Figure 5 for Figure 1 A cross-sectional view of the structure of the vertical central tube;

[0024] Figure 6 for Figure 1 Exploded view of the underground pipe in the middle;

[0025] Figure 7 for Figure 1 A cross-sectional view of the underground pipe structure in the middle;

[0026] Figure 8 A schematic diagram of a desktop fan-shaped dual-purpose fan provided in an embodiment of this application;

[0027] Figure 9 for Figure 8 Exploded view;

[0028] Figure 10 for Figure 8 A structural sectional view.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Fan head assembly; 11. Fan housing; 12. Fan blades; 13. Drive motor; 14. Mounting holes;

[0031] 2. Foot plate assembly; 21. Foot plate base plate; 22. Air outlet grille; 23. Recessed arc structure;

[0032] 3. Vertical tube assembly; 31. First support structure; 311. Vertical top tube; 312. Vertical middle tube; 3121. Female end cap; 3122. First DC power socket; 3123. First cover; 3124. First DC connector; 3125. First male end cap; 313. Vertical bottom tube; 3131. DC power socket board; 3132. Second DC power socket; 3133. Second cover; 3134. Second DC connector; 3135. Second male end cap; 3136. Power port; 314. Connecting wire; 32. Second support structure;

[0033] 4. Power adapter; 5. Remote control. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] To address the technical problem of the lack of a modular design solution in existing technologies that allows for free switching between two modes through component reconfiguration, this application provides a dual-purpose fan. This application breaks through the single-form limitation of traditional fans, significantly reduces user purchase and storage costs through component reuse, and requires no additional auxiliary components during structural conversion, ensuring the reliability and convenience of dual-mode switching.

[0038] Please see Figures 1 to 10 This application provides a dual-purpose fan, including: a fan head assembly 1, a foot plate assembly 2, and a vertical tube assembly 3; the vertical tube assembly 3 is composed of a plurality of vertical tubes. When the plurality of vertical tubes are connected end to end to form a first support structure 31, the fan head assembly 1 and the foot plate assembly 2 are respectively installed at both ends of the first support structure 31 to form a vertical fan; when the plurality of vertical tubes are respectively connected to the fan head assembly 1 to form a second support structure 32, the foot plate assembly 2 is installed on the air outlet surface of the fan head assembly 1 to form a desktop fan.

[0039] Specifically, the dual-purpose fan achieves its form conversion by adjusting the connection method of the vertical tube assembly 3. When used as a vertical fan, at least two vertical tubes are joined end-to-end to form a vertically extending first support structure 31. The fan head assembly 1 is installed on top of the first support structure 31, and the foot assembly 2 is fixed to the bottom of the first support structure 31 as a load-bearing base, forming a conventional vertical blowing mode. When converted to desktop mode, each vertical tube is individually assembled with the outer peripheral connection point of the fan head assembly 1 to form a multi-directionally extending second support structure 32 (e.g., three vertical tubes are radially distributed). At this time, the foot assembly 2 is inverted and attached to the air outlet mesh surface of the fan head assembly 1, using its internal airflow guiding structure to transform the vertical airflow into a surrounding airflow that diffuses in all directions. Through the two assembly forms of the vertical tube assembly 3 and the reuse of the foot assembly 2, a single device can be compatible with both vertical strong direct airflow and desktop surrounding airflow. At the same time, the detachable connection design of the vertical tubes allows for form switching without additional tools, making operation more convenient for users.

[0040] like Figure 2 As shown, the first support structure 31 consists of three vertical pipes connected end to end. The three vertical pipes include a top vertical pipe 311, a middle vertical pipe 312, and a bottom vertical pipe 313. One end of the top vertical pipe 311 is detachably connected to the fan head assembly 1, and the other end is detachably connected to the middle vertical pipe 312. One end of the bottom vertical pipe 313 is detachably connected to the foot plate assembly 2, and the other end is detachably connected to the middle vertical pipe 312.

[0041] Specifically, the top tube 311, middle tube 312, and bottom tube 313 of the first support structure 31 are connected sequentially via axial insertion. The top tube 311 has a threaded interface at its top that matches the fan head assembly 1, and its bottom is threadedly connected to the middle tube 312. The bottom of the middle tube 312 is connected to the bottom tube 313 via a rotation locking structure (i.e., a threaded structure). The end of the bottom tube 313 is threadedly connected to the foot assembly 2, or fixed to the foot assembly 2 via a magnetic suction device. Each tube segment interface is equipped with an anti-loosening limiting structure to ensure the stability of the vertical support. The free assembly and disassembly of the three top tubes allows for flexible adaptation to the support height requirements of different usage scenarios.

[0042] It is understood that the number of vertical tubes in this embodiment is not limited to three. The specific number can be selected according to the height requirements of the vertical fan or the stability requirements of the desktop fan, and is not limited here.

[0043] like Figure 2 and Figure 8 As shown, the second support structure 32 is a tripod structure. The back of the fan head assembly 1 is provided with several mounting holes 14. The ground tube 311, the middle tube 312, and the bottom tube 313 are respectively installed in the mounting holes 14.

[0044] Specifically, the three vertical tubes of the tripod structure (top tube 311, middle tube 312, and bottom tube 313) are connected via independent mounting holes 14 on the back of the fan head assembly 1. These mounting holes 14 are evenly distributed circumferentially on the back of the fan head. Each vertical tube has a threaded interface at its end that matches the mounting hole 14. After insertion, the tubes are fixed by a rotation locking mechanism, forming a three-point supported tripod layout. There is no direct connection between the vertical tubes; they are supported solely by being independently fixed to the fan head assembly 1. This three-point support layout significantly improves the anti-tipping capability in desktop mode, making it particularly suitable for environments with shaky desktops. Simultaneously, the independent mounting hole 14 design allows each vertical tube to be disassembled or installed individually, eliminating the need for a specific sequence and simplifying the assembly process.

[0045] like Figure 4-5 As shown, the ground-mounted central tube 312 has the same configuration as the ground-mounted central tube 311. The ground-mounted central tube 312 is equipped with a female end cap 3121, a first DC power socket 3122, a first pressure cap 3123, a first DC connector 3124, and a first male end cap 3125. The female end cap 3121, the first DC power socket 3122, the first pressure cap 3123, the first DC connector 3124, and the first male end cap 3125 are connected in series in the ground-mounted central tube 312 via a connecting wire 314.

[0046] Specifically, inside the central conduit 312, a female end cap 3121, a first DC power socket 3122, a first pressure cap 3123, a first DC connector 3124, and a first male end cap 3125 are arranged sequentially along the axial direction, and each component is connected in series via pre-embedded wires. The female end cap 3121 is located at the bottom of the conduit and is plugged into and matched with the male end cap of the bottom conduit 313; the first DC power socket 3122 is fixed to the inner side of the conduit wall for relay power transmission; the first pressure cap 3123 is threaded to secure the connection node between the first DC connector 3124 and the female end cap 3121; the first male end cap 3125 extends to the top of the conduit body and connects with the female end cap 3121 of the top conduit 311. All electrical components are arranged in a concealed cable tray isolated from the inner wall of the conduit, ensuring that mechanical connection and circuit conduction are completed simultaneously.

[0047] like Figure 6-7 As shown, the base tube 313 is equipped with a DC power socket board 3131, a second DC power socket 3132, a second pressure cap 3133, a second DC connector 3134, and a second male terminal block 3135. The DC power socket board 3131, the second DC power socket 3132, the second pressure cap 3133, the second DC connector 3134, and the second male terminal block 3135 are connected in series inside the base tube 313 via a connecting wire 314.

[0048] Specifically, the interior of the base pipe 313 contains, along its axial direction, a DC power socket plate 3131, a second DC power socket 3132, a second pressure cap 3133, a second DC connector 3134, and a second male terminal block 3135, all connected in series via pre-installed cables. The DC power socket plate 3131 is fixed to the inner wall of the pipe, while the second DC power socket 3132 protrudes from the side wall of the base pipe as an external power input port. The second pressure cap 3133 uses a snap-fit ​​structure to encapsulate the connection point between the second DC connector 3134 and the second male terminal block 3135. The second male terminal block 3135 extends to the top interface of the base pipe for docking with the female terminal block 3121 of the adjacent pipe section. The connecting cables 314 between the components utilize a concealed wiring channel, isolated and fixed from the inner wall of the pipe.

[0049] like Figure 1-2 and Figure 6 As shown, a power port 3136 is provided on the vertical base pipe 313, and the power port 3136 is connected to the external power adapter 4.

[0050] Specifically, a power port 3136 is provided on the outer wall of the base tube 313. The port has a standardized DC female connector embedded in it, and an annular sealing ring is provided around the connector. The outside of the port is covered with an openable dust cover. The power port 3136 is directly connected to the power supply line in the base tube 313 through internal wires. When the male connector of the external power adapter 4 is inserted, the dust cover automatically pops open. After insertion, it is locked by a buckle to ensure contact stability. The power supply from the adapter is directly input into the internal circuit system of the base tube 313 through the port.

[0051] like Figure 2 and Figure 10 As shown, the foot plate assembly 2 includes a foot plate base 21 and an air vent grille 22. The air vent grille 22 is installed on the foot plate base 21, and the bottom of the foot plate base 21 has a concave arc-shaped structure 23.

[0052] Specifically, the concave arc-shaped structure 23 at the bottom of the footplate 21 is integrally formed by stamping. The air outlet grille 22 is a ring-shaped grille, evenly distributed along the periphery of the footplate 21 and fixedly installed by a snap-locking structure. The lowest point of the concave arc is located at the geometric center of the footplate 21. The inner edge of the air outlet grille 22 connects with the arc edge, and the outer edge extends upward to form a surrounding structure, constituting a continuous air outlet channel around the circumference of the footplate.

[0053] like Figure 10 As shown, when the dual-purpose fan is in desktop fan mode, the air outlet surface of the fan head assembly 1 faces the base plate 21.

[0054] Specifically, when the dual-purpose fan is in desktop fan form, the foot plate assembly 2 is vertically installed on the outer side of the air outlet surface of the fan head assembly 1 via a magnetic or snap-fit ​​structure, so that the concave arc-shaped central axis of the foot plate base 21 is coaxially aligned with the air outlet direction of the fan. When the fan is running, the airflow is blown vertically from the air outlet surface of the fan head assembly 1 to the arc-shaped concave area of ​​the foot plate base 21, and after being guided by the arc-shaped surface, it diffuses evenly to the air outlet grilles 22 on both sides.

[0055] Furthermore, such as Figure 9 As shown, when the dual-purpose fan is in desktop fan mode, the remote control 5 is placed in the mounting slot in the center of the top surface of the base plate 21. The inner wall of the mounting slot is equipped with elastic clips, and the bottom of the slot is lined with an anti-slip silicone pad. The depth of the mounting slot is adapted to the thickness of the standard remote control 5. Symmetrical notches are provided on both sides of the slot for easy finger access to the remote control 5. A magnetic plate is embedded in the center of the bottom of the slot, magnetically adsorbing and fixing it to the metal plate on the back of the remote control 5, ensuring stable placement.

[0056] like Figure 2-3 As shown, the fan head assembly 1 includes a fan housing 11, fan blades 12 and a drive motor 13. The fan blades 12 are installed inside the fan housing 11, and the drive motor 13 is installed on the back of the fan housing 11. The fan blades 12 and the drive motor 13 are drivenly connected, and the drive motor 13 is rotatably connected to the vertical tube assembly 3.

[0057] Specifically, the fan housing 11 of the fan head assembly 1 is composed of a front cover and a rear cover fastened together by a snap-fit ​​structure. The fan blades 12 are directly connected to the output shaft of the drive motor 13 via a central shaft. The drive motor 13 is fixed to the inside of the rear cover by a mounting base. The connection end of the mounting base and the vertical tube assembly 3 is rotatably connected by a pivot mechanism. When the drive motor 13 is powered on, it drives the fan blades 12 to rotate and generate airflow. At the same time, the air outlet angle can be adjusted by manually rotating the head assembly around the pivot axis. The pivot has a built-in damping structure to maintain the positioning stability after the angle adjustment.

[0058] like Figure 7 and Figure 10 As shown, when the dual-purpose fan is in desktop fan form, the second DC connector 3134 in the vertical base tube 313 is electrically connected to the drive motor 13.

[0059] Specifically, when the dual-purpose fan is in desktop fan form, the second DC connector 3134 inside the base tube 313 is directly electrically connected to the drive motor 13 via an independent power supply line, while the internal electrical pathways of the middle tube 312 and the top tube 311 are disconnected, providing physical support only through a mechanical plug-in structure. The pins of the second DC connector 3134 and the interface with the drive motor 13 adopt a reverse-insertion prevention design, automatically locking the conduction circuit after plugging. At the same time, the connection end between the middle tube 312 and the top tube 311 retains a physical snap but has no electrical contacts, ensuring that power is transmitted to the motor only through the base tube, and the other tube sections only serve as structural supports.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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 components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0066] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0067] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dual-purpose fan, characterized in that, Includes: fan head assembly, base plate assembly, and floor tube assembly; The standing tube assembly consists of several standing tubes. When the multiple standing tubes are connected end to end to form a first support structure, the fan head assembly and the foot plate assembly are respectively installed at both ends of the first support structure to form a standing fan. When the multiple standing tubes are respectively connected to the fan head assembly to form a second support structure, the foot plate assembly is installed on the air outlet surface of the fan head assembly to form a desktop fan.

2. The dual-purpose fan according to claim 1, characterized in that, The first support structure consists of three vertical tubes connected end to end. The three vertical tubes include a top vertical tube, a middle vertical tube, and a bottom vertical tube. One end of the top vertical tube is detachably connected to the fan head assembly, and the other end is detachably connected to the middle vertical tube. One end of the bottom vertical tube is detachably connected to the foot plate assembly, and the other end is detachably connected to the middle vertical tube.

3. The dual-purpose fan according to claim 2, characterized in that, The second support structure is a tripod structure. The back of the fan head assembly is provided with several mounting holes, and the ground tube, the middle tube, and the bottom tube are respectively installed in the mounting holes.

4. The dual-purpose fan according to claim 2, characterized in that, The ground-mounted central tube has the same configuration as the ground-mounted central tube. The ground-mounted central tube is equipped with a female end seat, a first DC power socket, a first pressure cover, a first DC connector, and a first male end seat. The female end seat, the first DC power socket, the first pressure cover, the first DC connector, and the first male end seat are connected in series in the ground-mounted central tube via connecting wires.

5. The dual-purpose fan according to claim 2, characterized in that, The underground pipe is equipped with a DC power socket board, a second DC power socket, a second cover, a second DC connector, and a second male terminal block. The DC power socket board, the second DC power socket, the second cover, the second DC connector, and the second male terminal block are connected in series inside the underground pipe via connecting wires.

6. The dual-purpose fan according to claim 5, characterized in that, The vertical pipe is equipped with a power port, which is connected to an external power adapter.

7. The dual-purpose fan according to claim 1, characterized in that, The footplate assembly includes a footplate base plate and an air vent grille. The air vent grille is installed on the footplate base plate, and the bottom of the footplate base plate has a concave arc-shaped structure.

8. The dual-purpose fan according to claim 7, characterized in that, When the dual-purpose fan is in the form of a desktop fan, the air outlet surface of the fan head assembly faces the base plate of the footplate.

9. The dual-purpose fan according to claim 5, characterized in that, The fan head assembly includes a fan housing, fan blades, and a drive motor. The fan blades are installed inside the fan housing, and the drive motor is installed on the back of the fan housing. The fan blades are driven by the drive motor, and the drive motor is rotatably connected to the vertical tube assembly.

10. The dual-purpose fan according to claim 9, characterized in that, When the dual-purpose fan is in the form of a desktop fan, the second DC connector in the vertical base tube is electrically connected to the drive motor.

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