Head shaking driving structure and fan

Abstract

The application relates to a swing head driving structure and a fan. The swing head driving structure comprises a support assembly provided with a pivot shaft, a driving assembly arranged on the support assembly, a transmission assembly arranged on the support assembly and in transmission connection with an output shaft of the driving assembly, and a rotating assembly rotatably sleeved on the pivot shaft and in meshing transmission with the transmission assembly. The driving assembly drives the rotating assembly to reciprocating swing around the pivot shaft through the transmission assembly. Through cooperation of the pivot shaft and the rotating assembly, bearing parts can be omitted, the failure risk caused by bearing abrasion is reduced, the long-term stability and reliability of the swing head structure are greatly improved, and the overall structure is more compact and simple. In addition, the gear meshing transmission of the transmission assembly driving the rotating assembly forms a speed reduction and torque increase system, so that the driving assembly can output larger swing torque with smaller torque, the swing movement is more smooth, the angle adjusting range is wider, and various angle repeated swing can be met.

Description

Technical Field

[0001] This application relates to the field of fan technology, and in particular to an oscillating drive structure and a fan. Background Technology

[0002] Currently, there are many types of fan oscillating head drive structures on the market. Common oscillating head structures often rely on bearings for rotational support, resulting in a complex structure for the fan oscillating head drive, which leads to low installation and operation efficiency, and the fan is prone to shaking during the oscillation process. Utility Model Content

[0003] This application provides an oscillating drive structure and fan that simplifies the structure while ensuring its oscillation accuracy and stability.

[0004] Therefore, this application provides a swivel head driving structure, including:

[0005] The support assembly is equipped with a pivot;

[0006] A drive component is disposed on the support assembly;

[0007] A transmission component is disposed on the bracket assembly and is connected to the output shaft of the drive assembly in a transmission manner;

[0008] A rotating component is rotatably sleeved on the pivot and engages with the transmission component for transmission.

[0009] The drive assembly drives the rotating assembly to reciprocate around the pivot via the transmission assembly.

[0010] In some embodiments, the bracket assembly includes a mounting base with the pivot, and the mounting base has a recessed mounting groove on the side opposite to the pivot, the mounting groove containing the transmission assembly.

[0011] In some embodiments, the mounting base is further provided with a mounting groove, the mounting groove being disposed near the mounting groove, and the driving component being disposed within the mounting groove.

[0012] In some embodiments, the rotating assembly includes:

[0013] The rotating part has transmission teeth, which mesh with the transmission assembly for transmission.

[0014] A fixed column is provided at the rotating part. The fixed column has a hollow cavity that communicates with the rotating part. The pivot is embedded in the hollow cavity.

[0015] In some embodiments, the rotating part is provided with at least one protrusion, and the fixing seat is provided with a corresponding groove. The axial fixation of the bracket assembly and the rotating assembly is achieved by the cooperation of the protrusion and the groove.

[0016] In some embodiments, the pivot is provided with slots on both sides of the end opposite to the fixed base, and the fixed post is provided with corresponding locking blocks, which are engaged in the slots; the radial fixation of the bracket assembly and the rotating assembly is achieved through the cooperation of the locking blocks and the slots.

[0017] In some embodiments, each of the locking blocks is provided with an axially extending elastic rib, wherein pressing the elastic rib disengages the locking block from the locking slot.

[0018] This application also provides a fan, including:

[0019] The aforementioned head-swinging drive structure;

[0020] The fan head is located in the rotating component of the oscillating head drive structure and is driven by the drive component to oscillate back and forth.

[0021] The beneficial effects of this application are:

[0022] The oscillating head drive structure includes a support assembly, a drive assembly, a transmission assembly, and a rotating assembly; the support assembly is provided with a pivot; the drive assembly is located on the support assembly; the transmission assembly is located on the support assembly and is connected to the output shaft of the drive assembly; the rotating assembly is rotatably sleeved on the pivot and engages with the transmission assembly for transmission; wherein, the drive assembly drives the rotating assembly to oscillate back and forth around the pivot through the transmission assembly.

[0023] The support assembly serves as the foundation and support of the entire structure. The pivot is integrally formed or fixed to the support assembly, and its axis is the reference for the swing of the rotating component, ensuring the connection rigidity between the pivot and the support assembly. The drive assembly is securely mounted on the support assembly, providing the power source. The transmission assembly is mounted on the output shaft of the stepper motor, ensuring proper meshing between its output shaft and the transmission assembly to transmit the power of the drive assembly to the rotating component. Thus, the gear meshing transmission of the drive assembly to the rotating component forms a speed reduction and torque amplification system, allowing the drive assembly to output a larger swing torque with a smaller torque, resulting in smoother and more fluid oscillations and a wider angle adjustment range, thereby satisfying various angle repetitions. The oscillating head is rotatably mounted on the pivot of the support assembly. Driven by the oscillating head, it rotates synchronously around the pivot. This cooperation between the pivot and the oscillating head replaces the function of a standard bearing, eliminating the need for bearing parts and reducing the risk of failure due to bearing wear. This greatly improves the long-term stability and reliability of the oscillating head structure, while making the overall structure more compact and simple, reducing manufacturing difficulty and cost. The smaller the clearance between the pivot and the oscillating head, the less play or wobble there is during rotation, resulting in stronger pointing accuracy and stability. Combined with the forward and reverse rotation control of the drive assembly, the oscillating head achieves reciprocating oscillation, ultimately realizing the oscillating head effect. Attached Figure Description

[0024] 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.

[0025] Figure 1 An exploded view of a sway head drive structure provided in this application;

[0026] Figure 2 A cross-sectional view of a sway head drive structure provided in this application;

[0027] Figure 3 for Figure 2 A magnified view of part A in the image;

[0028] Figure 4 for Figure 2 A magnified view of part B in the image;

[0029] Figure 5 for Figure 1 A schematic diagram of the assembly of the rotating component and the support component.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Stepper motor; 11. Output shaft; 2. Pinion; 3. Bracket assembly; 31. Mounting base; 311. Mounting slot; 312. Fixing slot; 32. Pivot; 321. Slot; 4. Large gear; 41. Rotating part; 411. Transmission gear; 412. Protrusion; 42. Fixing post; 421. Locking block; 4211. Elastic rib. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] like Figures 1 to 5 As shown, a head-swinging drive structure provided in this application includes a support assembly 3, a drive assembly, a transmission assembly, and a rotating assembly; the support assembly 3 is provided with a pivot 32; the drive assembly is disposed on the support assembly 3; the transmission assembly is disposed on the support assembly 3 and is connected to the output shaft 11 of the drive assembly; the rotating assembly is rotatably sleeved on the pivot 32 and engages with the transmission assembly for transmission; wherein, the drive assembly drives the rotating assembly to reciprocate around the pivot 32 through the transmission assembly.

[0035] Among them, the support assembly 3 serves as the foundation and support of the entire structure. The pivot 32 is integrally formed or fixed on the support assembly 3, and its axis is the reference for the swing of the rotating assembly, ensuring the connection rigidity between the pivot 32 and the support assembly 3 and avoiding deviation during swing. Preferably, the drive assembly is a stepper motor 1, which is firmly installed on the support assembly 3 to provide a power source. Preferably, the transmission assembly is a pinion 2, which is installed on the output shaft 11 of the stepper motor 1 to ensure the precise position of the output shaft 11 and the pinion 2, thereby ensuring correct meshing with the rotating assembly to transmit the power of the stepper motor 1 to the rotating assembly. Preferably, the rotating assembly is a large gear 4. The large gear 4 is rotatably sleeved on the pivot 32 of the support assembly 3, and under the drive of the pinion 2, it achieves synchronous rotation around the pivot 32. Combined with the forward and reverse rotation control of the stepper motor 1, the large gear 4 achieves reciprocating swing, ultimately achieving the head-swinging effect.

[0036] When in operation, stepper motor 1 starts to rotate after receiving a control signal. The small gear 2 on the output shaft 11 of stepper motor 1 rotates accordingly. The rotating small gear 2 drives the large gear 4 that meshes with it. In this way, the large gear 4 converts the rotational motion of the small gear 2 into reciprocating oscillation around the pivot 32. That is, by changing the direction of the pulse signal input to stepper motor 1, the forward and reverse rotation of stepper motor 1 is controlled, so that the large gear 4 oscillates back and forth within a certain angle range, thereby achieving the effect of reciprocating head oscillation.

[0037] Understandably, the pivot 32, in conjunction with the large gear 4, replaces the function of a standard bearing. This eliminates the need for bearing components, reducing the risk of failure due to bearing wear and significantly improving the long-term stability and reliability of the oscillating head structure. It also makes the overall structure more compact and simpler, while reducing manufacturing difficulty and cost. Furthermore, a smaller clearance between the pivot 32 and the large gear 4 means less play or wobble during rotation, resulting in greater pointing accuracy and stability of the oscillating head. In addition, the use of a small gear 2 driving the large gear 4 forms a speed reduction and torque amplification system. Since gear transmission itself has the characteristics of precise transmission ratio, high efficiency, and compact structure, combined with the stepper motor 1, the stepper motor 1 can output a larger oscillating torque with less torque, resulting in smoother and more fluid oscillating head movement and a wider angle adjustment range, thus satisfying repeated oscillations at various angles.

[0038] In this embodiment, the bracket assembly 3 includes a fixed base 31, the fixed base 31 is provided with the pivot 32, and the fixed base 31 is recessed on the side opposite to the pivot 32 with a mounting groove 311, and the transmission assembly is provided in the mounting groove 311.

[0039] like Figures 1 to 3As shown, the mounting groove 311, integrally formed by the fixed base 31, allows for quick positioning of the transmission component (such as the pinion 2) by simply placing it into the mounting groove 311 during assembly, without the need for additional position adjustments, thus reducing assembly difficulty. Simultaneously, the design of the mounting groove 311 coordinates with the mounting position of the stepper motor 1. For example, after the stepper motor 1 is fixed, its output shaft 11 can be directly inserted into the pinion 2 within the mounting groove 311. Furthermore, combined with the simplified design concept of bearingless construction, the overall structural volume is further reduced, making the layout of each component more compact. This also effectively prevents the pinion 2 from radially shifting or twisting during movement, ensuring a uniform meshing gap between the pinion 2 and the large gear 4, and improving the smoothness and accuracy of the transmission.

[0040] like Figure 1 and Figure 4 As shown, in this embodiment, the fixing base 31 is further provided with a fixing groove 312, the fixing groove 312 is located close to the mounting groove 311, and the driving component is provided in the fixing groove 312.

[0041] The mounting slot 312 provides a dedicated installation space for drive components (such as stepper motor 1). By precisely matching the size of the slot to the shape of the stepper motor 1, and using screws and other fasteners, the stepper motor 1 can be quickly fixed within the mounting slot 312, preventing misalignment during installation. Furthermore, when the stepper motor 1 is operating, the sidewalls and bottom of the mounting slot 312 provide effective support, suppressing vibration transmission and preventing loosening or displacement of components due to vibration, thereby enhancing the operational stability of the entire oscillating head drive structure. Because the mounting slot 312 is located close to the mounting slot 311, the output shaft 11 of the stepper motor 1 can directly extend into the mounting slot 311 to connect with the pinion 2, shortening the distance between them and avoiding additional connecting parts or transmission structures. This results in a more compact overall layout and ensures the stability of the connection between the stepper motor 1 and the pinion 2.

[0042] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the rotating assembly includes a rotating part 41 and a fixed column 42; preferably, the rotating part 41 and the fixed column 42 are integrally formed to ensure connection rigidity; the rotating part 41 has a transmission tooth 411, which meshes with the transmission assembly for transmission; the fixed column 42 is disposed on the rotating part 41, and the fixed column 42 has a hollow cavity, which communicates with the rotating part 41, and the pivot 32 is embedded in the hollow cavity.

[0043] The rotating assembly converts the power of the transmission assembly into reciprocating oscillations around the pivot 32. Specifically, the rotating part 41, as the main body of the rotating assembly, receives the power from the transmission assembly and drives the fixed column 42 and the external load to oscillate. The transmission gear 411 directly meshes with the pinion 2 in the transmission assembly, forming a gear pair. When the pinion 2 rotates, the meshing force drives the rotating part 41 to rotate around the pivot 32. Preferably, the rotating part 41 is usually configured as a sector-shaped transmission gear 411 or a complete circular transmission gear 411, depending on the required oscillation angle range. It should be noted that if it is a complete circular gear, its reciprocating oscillation will be achieved by driving the stepper motor 1 to rotate forward and backward. The fixed column 42 provides a stable rotational support point for the rotating part 41 and also serves as an interface for connecting the external load. The hollow cavity runs through the entire fixed column 42 and communicates with the central area of ​​the rotating part 41. The rotating assembly is rotatably mounted on the pivot 32 through this hollow cavity, thus replacing the traditional bearing and making the structure simpler.

[0044] During operation, stepper motor 1 drives pinion 2 to rotate. Pinion 2 meshes with transmission teeth 411 on rotating part 41, and the force generated by the meshing drives rotating part 41 to start rotating. The rotational motion of rotating part 41 is transmitted through its integrally formed fixed column 42. The hollow cavity of fixed column 42 is fitted onto pivot 32 of bracket assembly 3. In this way, the hollow cavity of fixed column 42 directly serves as the rotational contact surface of pivot 32, eliminating the need for traditional bearings, further simplifying the structure, reducing costs and failure risks, and providing good rotational stability while ensuring machining accuracy. As rotating part 41 rotates, fixed column 42 also rotates synchronously around pivot 32. The external load that needs to swing is installed on fixed column 42. Finally, the rotation of fixed column 42 drives the swing of external load, thereby realizing the oscillation effect of the entire device. The reciprocating oscillation of the entire rotating assembly is achieved by controlling the forward and reverse rotation of the drive motor.

[0045] like Figure 3As shown, in this embodiment, the rotating part 41 is provided with at least one protrusion 412, and the fixed seat 31 is provided with a corresponding groove. The axial fixation of the bracket assembly 3 and the rotating assembly is achieved through the cooperation of the protrusion 412 and the groove. Specifically, the protrusion 412 of the rotating part 41 is embedded in the groove of the fixed seat 31, and the sidewall of the groove blocks the protrusion 412. Thus, the cooperation of the protrusion 412 and the groove forms an axial limiting structure to restrict the displacement of the rotating assembly along the axial direction, ensuring that the rotating assembly always rotates around the fixed position of the pivot 32, avoiding gear meshing misalignment, swing angle deviation, or structural collision caused by axial movement. Furthermore, the cooperation of the protrusion 412 and the groove not only restricts axial displacement but also reduces radial wobble of the rotating assembly during rotation through clearance or transition fit. That is, by engaging the protrusion 412 of the rotating part 41 with the groove of the fixed seat 31, the relative displacement between the two is reduced, the overall rigidity of the structure is enhanced, and the axial fixation of the bracket assembly 3 and the rotating assembly is achieved, thereby limiting the displacement of the rotating assembly along the axis of the pivot 32, while not affecting its rotational motion around the pivot 32, thus ensuring the stability of the swing.

[0046] like Figure 4 As shown, in this embodiment, the pivot 32 has slots 321 on both sides of its end facing away from the fixed base 31, and the fixed post 42 has corresponding locking blocks 421. The locking blocks 421 are engaged in the slots 321. Through the cooperation of the locking blocks 421 and the slots 321, the radial fixation of the bracket assembly 3 and the rotating assembly is achieved. After the locking blocks 421 are engaged in the slots 321, the sidewalls of the slots 321 form a rigid block against the locking blocks 421, restricting the rotation of the rotating assembly along the direction perpendicular to the axis of the pivot 32. This prevents changes in the gear center distance due to radial offset, avoids excessive meshing clearance, gear biting, or transmission jamming, thus directly ensuring the meshing accuracy of the transmission teeth 411 of the rotating part 41 and the pinion 2, reducing gear wear, and improving transmission smoothness. The engagement of the slot 321 and the locking block 421 acts as an additional guiding and positioning structure, ensuring that the fixed column 42 always rotates around the central axis of the pivot 32, preventing eccentric swaying. Combined with the bearingless design, this engagement compensates for any minor gaps that might exist in a direct shaft-hole fit, resulting in a more regular sway trajectory and more precise angle control for the rotating component. In other words, the engagement of the slot 321 on the pivot 32 and the locking block 421 on the fixed column 42 precisely achieves radial fixation of the bracket assembly 3 and the rotating component, limiting the displacement and eccentric swaying of the rotating component perpendicular to the axis of the pivot 32, while not affecting the reciprocating swaying function, further enhancing structural stability.

[0047] Understandably, the simple structure of the card block 421 and the card slot 321 solves the radial positioning problem under the bearingless design, and complements the axial fixing structure of the protrusion 412 and the groove, thus constructing a two-way fixing system that prevents axial movement and radial deviation. In this way, the connection between the rotating component and the bracket component 3 is more secure through two-way fixing, which not only enhances the transmission accuracy and structural stability, but also maintains the compactness of the overall design and extends the overall structural life.

[0048] like Figure 4 As shown, in this embodiment, each of the locking blocks 421 is provided with an axially extending elastic rib 4211. By pressing the elastic rib 4211, the locking block 421 is disengaged from the locking groove 321. When the elastic rib 4211 is pressed, it elastically contracts, causing the engaging portion of the locking block 421 to exit from the locking groove 321. This allows for easy removal of the rotating assembly from the pivot 32 without force. Specifically, the elastic rib 4211 maintains its original shape in its natural state (when not pressed), and the locking block 421 fits tightly against the locking groove 321. The elastic preload of the rib enhances the engagement stability, ensuring that the rotating assembly will not accidentally disengage during operation and guaranteeing the reliability of radial fixation. When disassembly is required, only a small pressing force is needed to deform and unlock the rib, achieving a balance that allows for disassembly when needed and secure operation.

[0049] In other words, by setting an axially extending elastic rib 4211 on the locking block 421, the deformable characteristics of the elastic rib 4211 are utilized to achieve convenient disengagement of the locking block 421 from the locking slot 321. In this way, without damaging the structure, the rotating component can be disassembled without damage and conveniently through elastic deformation. This makes the separation of the rotating component from the bracket component 3 more flexible and efficient, which not only improves the maintainability and assembly efficiency of the product, but also maintains the advantages of structural simplicity and low cost, further improving the practicality of the oscillating head drive structure.

[0050] This application also provides a fan, including the aforementioned oscillating drive structure and fan head; the fan head is disposed on the rotating component of the oscillating drive structure and is driven by the drive component to oscillate back and forth. This fan achieves stable and precise oscillation of the fan head by connecting the fan head to the rotating component of the aforementioned oscillating drive structure, utilizing the power transmission of the drive component. It also inherits the advantages of the oscillating drive structure in terms of simplicity, reliability, and low cost, improving the overall practicality of the fan. Specifically, the drive component drives the rotating component to oscillate via gear transmission. After the fan head is fixed to the rotating component, it synchronously receives the oscillating power, eliminating the need for additional intermediate transmission components and minimizing power loss. This gear transmission allows for precise control of the fan head oscillation angle, meeting the airflow range requirements of different usage scenarios. Furthermore, the bearingless design reduces oscillation jamming. Combined with gear meshing and a bidirectional fixing structure, the fan head oscillates more smoothly, avoiding shaking during airflow and reducing oscillation failures (such as jamming, abnormal noise, and oscillation angle deviation) during long-term use, thus extending the fan's service life. In addition, the compact design does not take up too much space inside the fan head and can be adapted to various fan types such as small table fans, wall-mounted fans, and mini fans without affecting the installation of the fan blades or the overall appearance.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 head-swinging drive structure, characterized in that, include: The support assembly is equipped with a pivot; A drive component is disposed on the support assembly; A transmission component is disposed on the bracket assembly and is connected to the output shaft of the drive assembly in a transmission manner; A rotating component is rotatably sleeved on the pivot and engages with the transmission component for transmission. The drive assembly drives the rotating assembly to reciprocate around the pivot via the transmission assembly.

2. The oscillating head drive structure according to claim 1, characterized in that, The bracket assembly includes a fixed base, the fixed base having the pivot, and the fixed base having a recessed mounting groove on the side opposite to the pivot, the mounting groove having the transmission assembly disposed therein.

3. The oscillating head drive structure according to claim 2, characterized in that, The mounting base is also provided with a mounting groove, which is located close to the mounting groove, and the drive component is located in the mounting groove.

4. The oscillating head drive structure according to claim 2, characterized in that, The rotating assembly includes: The rotating part has transmission teeth, which mesh with the transmission assembly for transmission. A fixed column is provided at the rotating part. The fixed column has a hollow cavity that communicates with the rotating part. The pivot is embedded in the hollow cavity.

5. The oscillating head drive structure according to claim 4, characterized in that, The rotating part is provided with at least one protrusion, and the fixed seat is provided with a corresponding groove. The axial fixation of the bracket assembly and the rotating assembly is achieved by the cooperation of the protrusion and the groove.

6. The oscillating head drive structure according to claim 5, characterized in that, The pivot is provided with slots on both sides of the end opposite to the fixed base, and the fixed column is provided with corresponding locking blocks. The locking blocks are engaged in the slots. The radial fixation of the bracket assembly and the rotating assembly is achieved through the cooperation of the locking blocks and the slots.

7. The oscillating head drive structure according to claim 6, characterized in that, Each of the locking blocks is provided with an axially extending elastic rib, wherein pressing the elastic rib causes the locking block to disengage from the locking slot.

8. A fan, characterized in that, include: The oscillating head drive structure as described in any one of claims 1 to 7; The fan head is located on the rotating component of the oscillating head drive structure and is driven by the rotating component to oscillate back and forth.

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