An electric fan

Abstract

This utility model discloses an electric fan, including a body, a first rotating mechanism, a second rotating mechanism, a power connection terminal, a support leg assembly, a base, and a locking assembly. The body includes a fixed base and a fan head. A first oscillating motor drives the fan head to oscillate left and right, and a second oscillating motor drives the fan head to oscillate up and down. The power connection terminal is located on the side of the fixed base. The support leg assembly consists of multiple rotatable legs, which support the body to form a tabletop structure when unfolded, and fit together to form a vertical support frame when folded. The base has a sleeve portion that can be fitted onto the outside of the vertical support frame to form a floor-standing structure. The locking assembly is used to fix the connection and prevent loosening. Therefore, by setting the power connection terminal on the side of the fixed base, the power supply layout is simplified, assembly difficulty is reduced, and poor electrical contact is avoided. The support legs and the base sleeve portion cooperate to achieve quick switching between tabletop and floor-standing modes, making operation convenient and the structure stable. Simultaneously, the fan head can oscillate up and down and left and right to deliver air, achieving an all-around three-dimensional air delivery effect.

Description

Technical Field

[0001] This utility model relates to the field of electric fan technology, and specifically to an electric fan. Background Technology

[0002] Existing electric fans mainly come in two structural forms: table fans and floor fans. Table fans are small in size and suitable for use on desktops or counters, but their height is fixed and their airflow range is limited, making them unsuitable for large-area air circulation; floor fans, on the other hand, achieve a larger airflow angle and range by raising the base, but they are larger in size, take up more space, and are inconvenient to carry and store.

[0003] To meet the needs of different usage scenarios, some manufacturers have proposed fan structures with adjustable height or replaceable bases. For example, different support bases can be used to switch between table and floor fan functions, or height can be adjusted using a telescopic rod. However, the above solutions generally have the following shortcomings: 1. During the structural switching process, it is usually necessary to set the first power connection terminal at the bottom of the desktop chassis, and add a power connector at the top of the extended support component to plug into it. At the same time, a second power terminal is set at the bottom of the support component and connected to the power connector through an extension cable. This multi-segment power supply structure is complex in design and cumbersome in assembly, and is prone to problems such as poor electrical contact or loose wires. In addition, an additional plug-in structure needs to be designed on the fan body, which increases manufacturing and assembly costs. 2. The telescopic rod mechanism has many parts and a complex structure, resulting in high manufacturing costs. Long-term use can easily cause shaking or jamming, leading to poor stability. 3. Replacing the base usually requires disassembling the device or using fasteners, which is cumbersome and not convenient for quick conversion.

[0004] Therefore, there is still a need for further improvement in terms of structural diversity, ease of installation, and storage flexibility of existing electric fans. Utility Model Content

[0005] To overcome the shortcomings of the prior art described above, this utility model provides an electric fan that simplifies power supply layout, reduces assembly difficulty, and avoids poor electrical contact by providing a power connection terminal on the side of the fixed base. The support legs and base sleeve cooperate to achieve quick switching between tabletop and floor-standing modes, making operation convenient and the structure stable. Simultaneously, the fan head can swing up and down and left and right to deliver air, achieving an all-around three-dimensional air delivery effect.

[0006] The technical solution adopted by this utility model to solve its problem is: An electric fan, comprising: The fuselage, including the mounting base and the fuselage head; A first rotating mechanism, the first rotating mechanism including a first oscillating motor connected to the fixed base, the first oscillating motor being used to drive the machine head to oscillate left and right; A second rotating mechanism is disposed on the first rotating mechanism. The second rotating mechanism includes a second oscillating motor, which is used to drive the machine head to oscillate up and down. A power connection terminal is located on the side of the mounting base and is used for power input; The support leg assembly includes multiple legs rotatably connected to the bottom of the fixed base; when the multiple legs are rotated and extended, they support the body to form a desktop fan structure; when the multiple legs are rotated and retracted, the multiple legs fit together to form a vertical support frame. The base has a sleeve portion arranged in a vertical direction, which can be sleeved onto the outside of the vertical support frame to form a floor fan structure. A locking component is used to lock and fix the sleeve portion after it is sleeved with the vertical support frame to prevent the sleeve portion from loosening.

[0007] Furthermore, the machine body also includes a connecting bracket, the machine head is connected to the connecting bracket, a connecting rod is connected to the fixed base, the first oscillating motor is fixed to the top of the connecting rod, the bottom of the connecting bracket is rotatably connected to the connecting rod, and the first oscillating motor is connected to the connecting bracket through a first rocker arm; When the first oscillating motor rotates, the connecting bracket can be driven to rotate left and right through the first rocker arm, thereby realizing the left and right swing of the machine head.

[0008] Furthermore, the machine head includes a drive motor, a motor housing for covering the drive motor, and fan blades connected to the output shaft of the drive motor, with a protective cover covering the fan blades. The motor housing is rotatably connected to the connecting bracket, the second oscillating motor is installed inside the motor housing, and the second oscillating motor is connected to the rotating part of the connecting bracket through the second rocker arm; When the second oscillating motor rotates, the connecting bracket can be driven to rotate up and down through the second rocker arm, thereby realizing the up and down swing of the machine head.

[0009] Furthermore, the locking component includes a push block and a locking hole that locks with the push block; One of the push block and the locking hole is disposed on the vertical support frame, and the other of the push block and the locking hole is disposed on the sleeve portion.

[0010] Furthermore, the locking hole is formed on the sleeve portion, and the push block is disposed on the outer wall of the vertical support frame and corresponds to the position of the locking hole; When the vertical support frame is inserted into the sleeve, the push block engages in the locking hole to achieve automatic locking. Pressing the push block can disengage it from the locking hole to release the lock.

[0011] Furthermore, any one of the multiple support legs is provided with the push block and a connecting block connected to the push block; The push block is provided with an elastic arm, the end of which is connected to the connecting block; when the vertical support frame is inserted into the sleeve, the elastic arm provides elastic force to the push block and makes it engage in the locking hole.

[0012] Furthermore, the support leg is provided with a mounting groove for mounting the connecting block, and the mounting groove is provided with a through hole that allows the push block to pass through, so that the push block extends to the outside of the support leg under the elastic force of the elastic arm to achieve locking.

[0013] Furthermore, the fixed base is provided with a plurality of connecting slots spaced apart along the circumference, and one end of each of the multiple legs is respectively hinged into the plurality of connecting slots; A rotating shaft is connected in the connecting groove, and one end of each leg is provided with a hinge hole that is rotatably connected to the rotating shaft; the other end of each of the multiple legs is provided with an anti-slip pad.

[0014] Furthermore, the bottom of the mounting base is provided with a boss, which is used to provide central support when the multiple legs are rotated and unfolded to form a table fan structure.

[0015] Furthermore, the fixed base is also provided with a limiting step, which is used to limit the insertion depth of the support frame after the sleeve part is inserted into place.

[0016] In summary, this utility model has the following technical effects: 1. This utility model of electric fan simplifies the power supply layout by setting a power connection terminal on the side of the fixed base, reduces internal wire connection links, lowers assembly difficulty, and effectively avoids poor contact and potential malfunctions caused by multiple electrical connections. The rotation of the support legs, combined with the sleeve connection of the base, allows for quick conversion between tabletop and floor-standing structures, offering simple operation, structural stability, and significantly improved flexibility and convenience. Simultaneously, the fan head can oscillate left and right, and up and down, via the first and second rotating mechanisms, creating a comprehensive three-dimensional airflow circulation, further enhancing the airflow effect and user comfort.

[0017] 2. When the multiple legs of this utility model are extended, the bottom or pole of the multiple legs jointly support the body, forming a stable table fan structure; when the legs are retracted, they fit together to form a vertical support frame, and the sleeve part is extended to form a floor fan structure, so that the whole machine has the advantages of compact structure, convenient storage, convenient carrying and stable support, effectively overcoming the problems of complex structure, cumbersome conversion and large space occupation in the prior art.

[0018] 3. The locking component of this electric fan ensures the stability of the sleeve section after it is connected to the vertical support frame, preventing loosening due to vibration or movement, and further improving the structural reliability and safety. Because the legs are foldable, the overall structure can significantly reduce its volume when not in use, making it easy to carry and store.

[0019] 4. The electric fan of this utility model has a simple overall structure, smooth switching, stable support and easy storage. Compared with traditional telescopic or replaceable base fans, it has significant advantages in terms of ease of operation, structural strength and cost control, and has good practical value and promotion prospects. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the table fan in the electric fan of this utility model; Figure 2 This is a schematic diagram of the structure of the electric fan of this utility model, in which multiple legs form a vertical support frame; Figure 3 This is a structural diagram of the floor-standing fan in the electric fan of this utility model; Figure 4 This is an exploded view of the push-button support leg in the electric fan of this utility model; Figure 5 This is an exploded view of the electric fan of this utility model with a support leg without a push block; Figure 6 This is a schematic diagram of the base of the electric fan of this utility model; Figure 7 This is a schematic diagram of the connecting groove in the electric fan of this utility model; Figure 8 This is a schematic diagram of the internal structure of the motor housing in the electric fan of this utility model; Figure 9 This is a schematic diagram of the connecting rod in the electric fan of this utility model.

[0021] The meanings of the reference numerals in the attached figures are as follows: 1. Body; 11. Fixed base; 12. Limiting step; 13. Connecting groove; 14. Rotating shaft; 15. Boss; 16. Power connection end; 2. Support leg; 21. Hinge hole; 22. Anti-slip foot pad; 23. Mounting groove; 24. Through hole; 25. Connecting block; 26. Reinforcing rib; 3. Press block; 31. Elastic arm; 4. Base; 41. Sleeve part; 42. Locking hole; 5. Motor housing; 51. Drive motor; 52. Fan blade; 53. Protective cover; 6. First oscillating motor; 61. First rocker arm; 7. Second oscillating motor; 71. Second rocker arm; 8. Connecting bracket; 81. Controller; 82. Bracket housing; 9. Connecting rod; 91. Bearing. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module 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 utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0025] like Figure 1-9An electric fan is shown, comprising a body 1, a first rotating mechanism, a second rotating mechanism, a power connection terminal 16, a support leg assembly, a base 4, and a locking assembly. The body 1 includes a fixed base 11 and a fan head. The first rotating mechanism includes a first oscillating motor 6 connected to the fixed base 11, which drives the fan head to oscillate left and right. The second rotating mechanism is connected to the first rotating mechanism and includes a second oscillating motor 7, which drives the fan head to oscillate up and down. The power connection terminal 16 is located on the side of the fixed base 11 and is used for power input. The support leg assembly... The component includes multiple support legs 2 rotatably connected to the bottom of the fixed base 11. The multiple support legs 2 are distributed in an umbrella shape around the central axis of the bottom of the fixed base 11. When the multiple support legs 2 are rotated and unfolded, they are used to support the body to form a table fan structure. When the multiple support legs 2 are rotated and retracted, the multiple support legs 2 fit together to form a vertical support frame. The base 4 is provided with a sleeve part 41 arranged in the vertical direction. The sleeve part 41 can be sleeved on the outside of the vertical support frame to form a floor fan structure. The locking component is used to lock and fix the sleeve part 41 after it is sleeved on the vertical support frame to prevent the sleeve part 41 from loosening.

[0026] Therefore, by setting a power connection terminal on the side of the fixed base 11, the power supply layout structure is simplified, the internal wire connection links are reduced, the assembly difficulty is reduced, and the potential for poor contact and malfunction caused by multiple electrical connections is effectively avoided.

[0027] In other embodiments, the number of outriggers 2 can be adjusted according to the size of the body 1 and the load requirements, for example, by setting it to a structure of three, four or six legs to balance support stability and folding compactness; the outriggers 2 can also be synchronously deployed and retracted through a linkage mechanism to simplify operation and improve the coordination of deployment actions.

[0028] In other embodiments, the length of the sleeve portion 41 can be designed to consist of two swivelable parts to achieve different height adjustment functions; in addition, the inner wall of the sleeve portion 41 can also be provided with a guide groove to provide a guiding and limiting function for the vertical support frame during the insertion process, thereby improving the smoothness and stability of the assembly.

[0029] In this embodiment, the sleeve portion 41 and the base 4 can also be designed as a detachable structure. By using threaded connections, snap-fit ​​engagements, or plug-in connections between the sleeve portion 41 and the base 4, they can be easily disassembled and assembled, thereby achieving separate storage of components without affecting structural strength and stability. This design not only effectively reduces the overall packaging volume and lowers transportation and storage costs, but also facilitates user disassembly and storage of the fan when not in use, further enhancing the portability and flexibility of the equipment.

[0030] In other embodiments, the detachable structure may also be combined with a positioning pin or a limiting ring to ensure that the sleeve part 41 is firmly connected to the base 4 after assembly, to avoid loosening or displacement, and to ensure the overall stability of the floor fan structure during use.

[0031] See Figure 8-9 The unit body 1 includes a connecting bracket 8, on which the unit head is mounted. A connecting rod 9 is mounted on a fixed base 11. A first oscillating motor 6 is fixed to the top of the connecting rod 9, and the bottom of the connecting bracket 8 is rotatably connected to the connecting rod 9. The first oscillating motor 6 is connected to the connecting bracket 8 via a first rocker arm 61. When the first oscillating motor 6 starts, the first rocker arm 61 drives the connecting bracket 8 to swing left and right, thereby realizing the horizontal reciprocating oscillation of the unit head to deliver air. With this structure, the left and right rotation of the unit head is more stable, the transmission path is shorter and the efficiency is higher, avoiding the shaking and noise problems that are easily generated by traditional eccentric linkage structures.

[0032] In this embodiment, a bearing 91 is provided between the connecting bracket 8 and the connecting rod 9 to achieve low-friction rotational engagement, making the machine head swing more smoothly and reliably, and improving the overall operational stability and service life.

[0033] In this embodiment, the connecting bracket 8 includes a bracket housing 82, which covers the outside of the first oscillating motor 6 and is rotatably connected to the connecting rod 9 via a bearing 91. The bracket housing 82 not only protects the first oscillating motor 6 from dust and moisture entering and causing performance degradation or damage to the first oscillating motor 6, but also the bearing 91 makes the rotation between the connecting bracket 8 and the connecting rod 9 more stable and smooth, significantly reducing frictional resistance and operating noise, and improving the reliability and service life of the oscillating mechanism.

[0034] Furthermore, the air conditioning unit includes a drive motor 51, a motor housing 5, fan blades 52, and a protective cover 53. The motor housing 5 covers the drive motor 51, the fan blades 52 are mounted on the output shaft of the drive motor 51, and the protective cover 53 covers the outside of the fan blades 52. The motor housing 5 is rotatably connected to the connecting bracket 8. The second oscillating motor 7 is installed inside the motor housing 5 and connected to the connecting bracket 8 via the second rocker arm 71. When the second oscillating motor 7 is started, the second rocker arm 71 drives the motor housing 5 to swing up and down, realizing automatic air supply adjustment of the air conditioning unit in the vertical direction, thereby forming a two-way three-dimensional air supply effect in both vertical and horizontal directions, significantly improving air circulation efficiency and comfort.

[0035] It should be noted that one end of the second rocker arm 71 is connected to the output shaft of the second oscillating motor 7, and the other end is connected to the rotating part of the connecting bracket 8 and the motor housing 5 to achieve stable transmission in the vertical direction. The rotating part may include a rotating shaft mounted on the connecting bracket 8. The motor housing 5 has a through hole rotatably connected to this rotating shaft. The rotating shaft passes through the through hole and is fixedly connected to a rotating disk. The other end of the second rocker arm 71 is connected to the rotating disk. When the second oscillating motor 7 rotates, the second rocker arm 71 drives the rotating disk to rotate, thereby causing the motor housing 5 to swing up and down around the rotating shaft, achieving vertical airflow adjustment of the machine head. This structure has a short transmission path, smooth rotation, effectively reduces mechanical wear and noise, and improves oscillation accuracy and overall machine reliability.

[0036] In this embodiment, a controller 81 is also included, which is disposed within the connecting bracket 8. The controller 81 is used to centrally control the operation of the first oscillating motor 6, the second oscillating motor 7, and the drive motor 51, and can realize automatic oscillation of the machine head, wind speed adjustment, and switching of working modes. Integrating the controller 82 into the connecting bracket 8 not only makes the wiring layout more compact and reduces the complexity of external wiring, but also effectively reduces the length of electrical connections, improves the control response speed and system stability, and enhances the protection and aesthetics of the entire machine.

[0037] In this embodiment, the coordinated arrangement of the first oscillating motor 6 with the first rocker arm 61 and the second oscillating motor 7 with the second rocker arm 71 enables the electric fan to oscillate in both vertical and horizontal directions during operation, thereby creating a multi-dimensional, three-dimensional airflow effect. This structure significantly expands the airflow coverage and improves air circulation efficiency. Regardless of whether the electric fan is in a tabletop or floor-standing configuration, it can achieve wide-angle airflow, adapting to different spaces and usage scenarios. The coordinated action of the dual rotating mechanisms not only makes the airflow more uniform and gentle, improving air circulation comfort, but also allows for flexible adjustment of the airflow angle according to user needs, offering advantages such as energy saving, high efficiency, and strong adaptability.

[0038] In other embodiments, the first rotating mechanism may adopt a gear transmission structure driven by the first oscillating motor 6 to achieve smooth left and right oscillation; the second rotating mechanism may also adopt a gear transmission structure driven by the second oscillating motor 7 or an eccentric wheel drive structure, thereby further improving the accuracy and reliability of the air supply angle adjustment while ensuring rotational flexibility.

[0039] Furthermore, the locking assembly includes a push block 3 and a locking hole 42 that locks into the push block 3; one of the push block 3 and the locking hole 42 is disposed on the vertical support frame, and the other of the push block 3 and the locking hole 42 is disposed on the sleeve portion 41. This structure enables automatic locking and convenient unlocking during the sleeve connection process, reducing manual operation steps and improving connection efficiency.

[0040] In other embodiments, the locking component may also adopt a knob lock, snap lock or spring pin structure, and be fixed by rotation, engagement or elastic positioning; different locking forms can be selected according to manufacturing process and usage habits, all of which can ensure that the connection between the sleeve part 41 and the vertical support frame is stable and easy to disassemble and assemble.

[0041] See Figure 6 In this embodiment, the locking hole 42 is formed on the sleeve portion 41, and the push block 3 is disposed on the outer wall of the vertical support frame and corresponds to the position of the locking hole 42. When the vertical support frame is inserted into the sleeve portion 41, the push block 3 automatically engages with the locking hole 42 under the action of elasticity, realizing automatic locking; pressing the push block 3 will disengage it from the locking hole 42, thereby releasing the lock so that the sleeve portion 41 can be disassembled from the vertical support frame. This structure has the advantages of reliable locking and convenient operation, which not only improves the connection stability, but also ensures the user's operational convenience when changing the form.

[0042] See Figure 4-5 In this embodiment, any one of the multiple support legs 2 is provided with a push block 3 and a connecting block 25 connected to the push block 3. The push block 3 is provided with an elastic arm 31, the end of which is connected to the connecting block 25. When the vertical support frame is inserted into the sleeve part 41, the elastic arm 31 provides elastic force to the push block 3, causing it to automatically engage in the locking hole 42 to complete the locking. This structure achieves an integrated structural design through the elastic arm 31, and has the advantages of simple manufacturing, reliable rebound, and long service life.

[0043] In other embodiments, an independent spring element can also be provided between the push block 3 and the connecting block 25. The spring force provides a reset effect for the push block 3, so that the push block 3 can be locked into the locking hole 42. This solution has a more flexible structure and is suitable for assembly requirements under different materials or injection molding conditions, further improving design adaptability.

[0044] Furthermore, the support leg 2 is provided with a mounting groove 23 for mounting the connecting block 25. The mounting groove 23 has a through hole 24 that allows the push block 3 to pass through, so that the push block 3 extends out of the support leg 2 under the elastic force of the elastic arm 31 and engages in the locking hole 42, thereby achieving a reliable lock between the vertical support frame and the sleeve part 41. This arrangement not only facilitates component installation but also effectively protects internal components from external damage.

[0045] See Figure 7 The bottom of the body 1 is provided with a fixed base 11, and multiple connecting slots 13 are provided on the fixed base 11 at intervals along the circumference. One end of each of the multiple legs 2 is hinged in the multiple connecting slots 13, so as to realize the symmetrical distribution and balanced deployment of the legs 2, and further improve the structural stability.

[0046] In other embodiments, the rotatable connection between the support leg 2 and the fixed base 11 can be achieved through a pin or ball joint hinge structure to accommodate different angles of expansion and contraction, thereby improving the flexibility and assembly adaptability of the support assembly. Furthermore, a limiting ring, limiting protrusion, or buffer washer can be added to the fixed base 11 to reduce frictional wear of the support leg 2 during rotation and improve rotational stability. The limiting ring or limiting protrusion can mechanically limit the support leg 2 when it is expanded to a predetermined angle, preventing over-expansion and structural instability; the buffer washer can absorb some of the rotational impact force, further improving the reliability and service life of the support leg 2 in supporting the body 1 when forming a desktop fan structure.

[0047] Preferably, a rotating shaft 14 is connected within the connecting groove 13, and one end of the support leg 2 has a hinge hole 21 that mates with the rotating shaft 14. This rotating connection structure allows the support leg 2 to open and close smoothly, reducing frictional resistance and extending its service life.

[0048] Furthermore, each of the multiple support legs 2 has an anti-slip pad 22 at its other end. The anti-slip pad 22 can be made of elastic material to increase friction, reduce vibration, and improve the support stability of the desktop fan structure, so that the fan can maintain stable operation on different placement surfaces.

[0049] In other embodiments, the anti-slip pad 22 may be designed as a replaceable structure to adapt to different usage scenarios, such as a soft pad for use on the floor and a hard pad for use on a desktop; the surface of the anti-slip pad 22 may also be provided with a micro-textured surface or an absorbent layer to further enhance the anti-slip performance.

[0050] In this embodiment, the support leg 2 is provided with reinforcing ribs 26. The reinforcing ribs 26 are arranged along the axial or longitudinal direction of the support leg 2 to enhance the overall rigidity and bending strength of the support leg 2. This effectively prevents the support leg 2 from deforming or loosening during long-term load-bearing or frequent unfolding and retraction when forming a tabletop or floor-standing fan structure. By setting the reinforcing ribs 26, not only is the overall structural strength and service life of the support component improved, but the overall support stability and durability of the whole machine are further improved while ensuring lightweight design.

[0051] Furthermore, the bottom of the mounting base 11 is provided with a boss 15, which provides central support when the multiple legs 2 rotate and unfold to form a tabletop fan structure, thereby further improving the force balance and overall stability of the body 1 in the tabletop state. In addition, when the multiple legs 2 rotate and retract, the boss 15 also limits and constrains the retraction angle of the legs 2, ensuring they fit together to form a vertical support frame in the retracted state. This facilitates the smooth connection of the sleeve part 41 and enables rapid conversion to a floor-standing fan structure. This structural design effectively avoids the problem of incomplete retraction of the legs 2, further improving the reliability and ease of operation of the structure.

[0052] Furthermore, the fixed base 11 is also provided with a limiting step 12. The limiting step 12 is used to limit the insertion depth of the vertical support frame after the sleeve part 41 is inserted into place, so as to prevent over-insertion from causing jamming or structural damage, and to ensure assembly accuracy and reliability of use.

[0053] In other embodiments, the limiting step 12 can be replaced by a limiting ring, a stop block, or a magnetic limiting component structure to achieve different forms of insertion limiting methods; the cooperation of the limiting component can effectively prevent the sleeve part 41 from being inserted too deeply or shaking, thereby improving the overall stability of the support.

[0054] In summary, this utility model of an electric fan simplifies the power supply layout by providing a power connection terminal 16 on the side of the fixed base 11, reduces internal wire connection links, lowers assembly difficulty, and effectively avoids poor contact and potential malfunctions caused by multiple electrical connections. The rotation of the support legs 2, combined with the engagement of the sleeve portion 41 of the base 4, allows for quick conversion between tabletop and floor-standing structures, offering simple operation, structural stability, and significantly improved flexibility and convenience. Simultaneously, the fan head can oscillate left and right, and up and down, via the first and second rotating mechanisms, creating a comprehensive three-dimensional airflow circulation, further enhancing the airflow effect and user comfort.

[0055] This utility model of electric fan enables quick switching between two usage modes: a table fan structure and a floor fan structure. The structural conversion can be achieved simply by rotating the support leg 2 and cooperating with the sleeve part 41, simplifying the operation steps and improving user convenience.

[0056] When the legs 2 are extended, the bottom or pole of the multiple legs 2 together support the body 1, forming a stable table fan structure. When the multiple legs 2 are retracted, they fit together to form a vertical support frame, and are extended by the sleeve part 41 to form a floor fan structure. This makes the whole machine have the advantages of compact structure, convenient storage, easy carrying and stable support, effectively overcoming the problems of complex structure, cumbersome conversion and large space occupation in the prior art.

[0057] The electric fan of this utility model features a locking component that ensures the stability of the sleeve part 41 after it is connected to the vertical support frame, preventing loosening due to vibration or movement, and further improving the structural reliability and safety. Since the support legs 2 can be rotated and folded, the overall structure can significantly reduce its volume when not in use, making it easy to carry and store.

[0058] This utility model electric fan has a simple overall structure, smooth switching, stable support and easy storage. Compared with traditional telescopic or replaceable base fans, it has significant advantages in terms of ease of operation, structural strength and cost control, and has good practical value and promotion prospects.

[0059] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0060] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module 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 utility model.

[0061] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An electric fan, characterized in that, include: The fuselage, including the mounting base and the fuselage head; A first rotating mechanism, the first rotating mechanism including a first oscillating motor connected to the fixed base, the first oscillating motor being used to drive the machine head to oscillate left and right; The second rotating mechanism is connected to the first rotating mechanism. The second rotating mechanism includes a second oscillating motor, which is used to drive the machine head to oscillate up and down. A power connection terminal is located on the side of the mounting base and is used for power input; The support leg assembly includes multiple legs rotatably connected to the bottom of the fixed base; when the multiple legs are rotated and extended, they support the body to form a desktop fan structure; when the multiple legs are rotated and retracted, the multiple legs fit together to form a vertical support frame. The base has a sleeve portion arranged in a vertical direction, which can be sleeved onto the outside of the vertical support frame to form a floor fan structure. A locking component is used to lock and fix the sleeve portion after it is sleeved with the vertical support frame to prevent the sleeve portion from loosening.

2. The electric fan according to claim 1, characterized in that, The machine body also includes a connecting bracket, the machine head is connected to the connecting bracket, a connecting rod is connected to the fixed base, the first oscillating motor is fixed to the top of the connecting rod, the bottom of the connecting bracket is rotatably connected to the connecting rod, and the first oscillating motor is connected to the connecting bracket through a first rocker arm; When the first oscillating motor rotates, the connecting bracket can be driven to rotate left and right through the first rocker arm, thereby realizing the left and right swing of the machine head.

3. The electric fan according to claim 2, characterized in that, The machine head includes a drive motor, a motor housing for covering the drive motor, and fan blades connected to the output shaft of the drive motor. The fan blades are covered with a protective cover. The motor housing is rotatably connected to the connecting bracket, the second oscillating motor is installed inside the motor housing, and the second oscillating motor is connected to the rotating part of the connecting bracket through the second rocker arm; When the second oscillating motor rotates, the connecting bracket can be driven to rotate up and down through the second rocker arm, thereby realizing the up and down swing of the machine head.

4. The electric fan according to claim 1, characterized in that, The locking component includes a push block and a locking hole that locks with the push block; One of the push block and the locking hole is disposed on the vertical support frame, and the other of the push block and the locking hole is disposed on the sleeve portion.

5. The electric fan according to claim 4, characterized in that, The locking hole is formed on the sleeve portion, and the push block is disposed on the outer wall of the vertical support frame and corresponds to the position of the locking hole; When the vertical support frame is inserted into the sleeve, the push block engages in the locking hole to achieve automatic locking. Pressing the push block can disengage it from the locking hole to release the lock.

6. The electric fan according to claim 5, characterized in that, Each of the multiple support legs is provided with the push block and a connecting block connected to the push block; The push block is provided with an elastic arm, the end of which is connected to the connecting block; when the vertical support frame is inserted into the sleeve, the elastic arm provides elastic force to the push block and makes it lock into the locking hole.

7. The electric fan according to claim 6, characterized in that, The support leg has a mounting groove for mounting the connecting block. The mounting groove has a through hole that allows the push block to pass through, so that the push block extends out of the support leg under the elastic force of the elastic arm to achieve locking.

8. The electric fan according to claim 1, characterized in that, The fixed base is provided with multiple connecting slots spaced apart along the circumference, and one end of each of the multiple legs is respectively hinged into the multiple connecting slots; A rotating shaft is connected in the connecting groove, and one end of each leg has a hinge hole that is rotatably connected to the rotating shaft; the other end of each of the multiple legs is provided with an anti-slip pad.

9. The electric fan according to claim 8, characterized in that, The bottom of the mounting base is provided with a boss, which is used to provide central support when the multiple legs are rotated and unfolded to form a table fan structure.

10. The electric fan according to claim 8, characterized in that, The fixed base is also provided with a limiting step, which is used to limit the insertion depth of the support frame after the sleeve part is inserted into place.

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