A fan head and a fan

Abstract

The utility model relates to a fan head and fan, including installation frame and be located in its air duct's air -blowing module, the base of air -blowing module is integrated with fan body, battery, circuit board and speed regulation element, the base rotatably sets up a drive ring, this drive ring is engaged with the drive gear on the speed regulation element through the inside tooth ring, thereby the rotation movement of drive ring is transmitted to the speed regulation element to realize the stepless control to the fan body rotating speed, the utility model realizes the high integration of speed regulation mechanism and fan head, has compact structure, the advantage that operation is direct and intuitive, speed regulation fine.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical appliances, and more specifically, to a fan head and a fan. Background Technology

[0002] Currently, most portable fans on the market typically consist of a mounting bracket (or base) for support and a fan head rotatably mounted on the mounting bracket, as shown in patents CN202020218339.X and CN202320367344.0. In these designs, only the fan head body is installed in the fan head. The adjustment components for controlling the fan speed, such as adjustment buttons, are generally located on the handle of the mounting bracket or on the base.

[0003] This design, which separates the control functions from the fan head, limits the integration and innovation of the overall product structure. The fan head is forced to be designed as a single-function air outlet component, making it difficult to achieve a more compact and aesthetically pleasing highly integrated design. At the same time, this separation also increases the internal wiring from the bracket to the fan head, making the structure more complex, increasing assembly difficulty, and increasing potential points of failure.

[0004] Furthermore, existing adjustment buttons located on stands or bases are mostly push-button or rotary switches, typically offering only three fixed speeds: high, medium, and low. This fails to meet users' needs for fine-tuned and personalized fan speed adjustments. For example, in a quiet office environment, users might require a "micro" setting, which is even weaker than "low"; while in a stuffy environment, users might desire a fan speed between "medium" and "high." Existing solutions cannot achieve either, significantly diminishing the user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fan head that addresses the above-mentioned deficiencies of the prior art.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: On one hand, this utility model provides a fan head, which includes a mounting frame with an air duct in the mounting frame; a blowing module is fixedly mounted inside the air duct; the blowing module includes an inner ring and a base fixedly disposed inside the inner ring, forming an airflow channel communicating with the air duct between the base and the inner ring; a fan body is rotatably mounted on the base; a circuit board, a battery electrically connected to the circuit board, and a speed regulating element electrically connected to the circuit board are also mounted on the base; a drive ring is rotatably mounted on the base; a drive gear is fixedly connected to the speed regulating element, and a gear ring meshing with the drive gear is provided on the inner side of the drive ring; the speed regulating element is used to receive the mechanical rotation of the drive gear and convert it into an electrical signal output to the circuit board to control the speed of the fan body.

[0007] In the fan head of this utility model, the base is located at the rear end of the inner ring, and at least a portion of the rear end of the base protrudes beyond the rear end of the inner ring so that the drive ring can be rotatably sleeved on the base.

[0008] In the fan head of this utility model, the front surface of the base and the inner front surface of the inner ring form a first receiving groove; the fan body is rotatably mounted in the first receiving groove via a rotating assembly.

[0009] The fan head of this utility model has a second receiving groove on the rear surface of the base corresponding to the first receiving groove; the circuit board, the battery and the speed regulating element are installed in the second receiving groove; the first receiving groove and the second receiving groove are connected through a central wire hole.

[0010] The fan head of this utility model includes at least one partition in the middle of the second receiving groove to divide the second receiving groove into a battery mounting cavity and a component mounting cavity; the central wire hole is located in the battery mounting cavity; the component mounting cavity is also provided with a positioning component for positioning and fixing the circuit board, and a positioning hole for fixing the speed regulating component; the positioning hole is connected to the first receiving groove.

[0011] The fan head of this utility model includes a drive ring comprising a base arranged in a ring shape; the end of the base facing the fan body has a first opening, and the end facing away from the fan body has a second opening corresponding to the first opening; the toothed ring is located between the first opening and the second opening; the inner diameter of the toothed ring is smaller than the inner diameter of the second opening.

[0012] The fan head of this utility model further includes an upper cover that matches the second opening; the upper cover has a plurality of connecting posts extending toward the base on one side surface facing the first opening; the connecting posts can be fixedly connected to the base by screws; when the upper cover and the base are assembled in place, all the connecting posts pass through the drive ring and are connected to the base, and the upper cover abuts against the toothed ring.

[0013] The fan head of this utility model includes a plurality of air guide plates in the airflow channel that connect the base and the inner ring; the first end of the air guide plate connected to the base is higher than the second end connected to the inner ring, and the end faces of the first ends of the plurality of air guide plates are connected to form a limiting surface that supports the drive ring.

[0014] The fan head of this utility model includes a plurality of positioning blocks circumferentially arranged on the inner sidewall of the mounting frame; the two ends of the positioning blocks extend toward the front and rear ends of the mounting frame respectively; a limiting ring is provided at the rear end of the inner ring; a plurality of positioning strips extending toward the front end of the inner ring are circumferentially arranged on the outer sidewall of the inner ring on one side of the limiting ring; the positioning strips are provided with guide grooves for the positioning blocks to be inserted; after the mounting frame and the inner ring are assembled in place, the two are connected and fixed by a snap-fit ​​assembly.

[0015] On the other hand, the present invention also provides a fan, which includes a bracket, wherein the bracket is rotatably mounted with a fan head as described above via an angle adjustment component.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model integrates the fan body, power supply, speed control element, and transmission mechanism all onto the base of the fan head, achieving a high degree of integration between the speed control function and the fan head. This completely changes the traditional fan design where the control components are separated and placed on the bracket or base. This not only makes the overall structure of the product more compact and aesthetically pleasing, but also significantly simplifies internal wiring, reduces assembly complexity and potential failure points, and improves the reliability and design of the product.

[0017] 2. Users can directly adjust the wind speed by rotating the drive ring on the fan head, making the operation more intuitive and convenient. By using a drive ring wheel to drive the drive gear meshing transmission in conjunction with the speed adjustment element, stepless or more precise multi-level wind speed adjustment can be achieved. This breaks through the limitation of existing push-button controls, which generally only have three levels. It can meet users' personalized and precise wind speed needs in different scenarios such as offices and bedrooms, greatly improving the user experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of a fan head in Embodiment 1 of this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of a fan head in Embodiment 1 of this utility model. Figure 2 .

[0020] Figure 3 This is a three-dimensional exploded view of a fan head according to Embodiment 1 of this utility model. Figure 1 .

[0021] Figure 4 This is a three-dimensional exploded view of a fan head according to Embodiment 1 of this utility model. Figure 2 .

[0022] Figure 5 yes Figure 4 Enlarged view of point A in the image. Detailed Implementation

[0023] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Reference Figures 1-5 This utility model provides a specific embodiment of a fan head. The fan head includes a mounting frame 11, which is the outer shell structure of the entire fan head. Its shape and size can be designed according to actual needs. In this embodiment, the mounting frame 11 is preferably a cylindrical frame. An air duct is formed axially through the interior of the mounting frame 11. One end of the mounting frame 11 has an air outlet 12 with a protective net. The other end of the mounting frame 11 has an opening for a blower module 13 to pass through. The blower module 13 is fixedly installed inside the air duct; this blower module 13 is the core functional component for generating airflow.

[0029] In this embodiment, the blower module 13 mainly includes an inner ring 131, a base 132 fixedly disposed inside the inner ring 131, a fan body 134 rotatably disposed on the base 132, and a circuit board 135, a battery 136, a speed regulating element 137 and a drive ring 138 integrated on the base 132.

[0030] The inner ring 131 is approximately circular, and the base 132 is fixedly disposed on the inner side of the inner ring 131. An annular airflow channel 133 is formed between the base 132 and the inner ring 131, and this airflow channel 133 is connected to the air duct of the mounting frame 11. To optimize airflow and enhance structural stability, multiple guide plates 140 are evenly arranged within the airflow channel 133. The two ends of each guide plate 140 are fixedly connected to the outer circumferential surface of the base 132 and the inner circumferential surface of the inner ring 131, respectively. In this embodiment, the guide plate 140 is preferably an arc-shaped plate structure that guides the airflow within the air duct smoothly towards the air outlet of the fan head; its number can be set according to actual needs. These guide plates 140 not only effectively guide the airflow, reducing turbulence and noise when the airflow passes through the airflow channel 133, but also enhance the connection strength between the base 132 and the inner ring 131, improving the structural stability of the entire blower module 13. In this embodiment, the fan body 134 base faces the air outlet 12, and the drive ring 138 is located on the side of the base opposite to the air outlet 12.

[0031] To securely install the blower module 13 within the mounting frame 11, this embodiment employs a combination of positioning and snap-fit ​​methods. Specifically, the inner sidewall of the mounting frame 11 is provided with multiple positioning blocks 111 circumferentially. Correspondingly, the outer rear end edge of the inner ring 131 is provided with a limiting ring 1311, and its outer sidewall is also provided with multiple forward-extending positioning strips 1312 circumferentially. Each positioning strip 1312 has a guide groove 1313 for the positioning block 111 to be inserted. During assembly, the positioning block 111 is first aligned and inserted into the guide groove 1313, and the inner ring 131 is pushed axially until the positioning block 111 is inserted into place. At this point, the two can be finally locked and fixed by a preset snap-fit ​​assembly; this snap-fit ​​assembly can use existing slots and elastic snaps for locking, and the structure will not be described in detail.

[0032] The base 132 is the load-bearing center of the entire fan head, located at the rear end of the inner ring. At least a portion of the rear end of the base 132 protrudes beyond the rear end of the inner ring 131, forming a "neck" for easy operation, allowing the drive ring 138 to be rotatably fitted onto the base 132, thereby enabling subsequent manual adjustment of the fan speed. Preferably, the first end of the air guide plate 140 connected to the base 132 is higher than its second end connected to the inner ring 131, so that the end faces of the first ends of multiple air guide plates 140 can collectively form a flat supporting and limiting surface for axially limiting the drive ring 138.

[0033] The base 132 is cleverly divided into multiple functional areas. Specifically, the front surface of the base 132 and the inner front surface of the inner ring 131 enclose each other to form a first receiving groove 1321. The fan body 134 is rotatably mounted in the first receiving groove 1321 via a rotating assembly. The fan body 134 is the direct component that generates wind power, and its blade shape and number can be designed according to actual needs. The fan body 134 includes fan blades, a hub, and a drive motor; in modern portable fans, the drive motor is preferably a DC brushless motor, which has advantages such as high efficiency, low noise, long service life, and precise control, making it very suitable for scenarios requiring fine speed adjustment; the rotating assembly can adopt a common rotating structure in the fan field in the prior art, including a hollow connecting shaft set in the first receiving groove, and a central wire hole 1323 on the hollow connecting shaft; the connecting shaft and the base 132 can be integrally formed, and an oil-impregnated bearing (not shown in the figure) is sleeved on the connecting shaft. The oil-impregnated bearing has self-lubricating properties, which can effectively reduce friction and noise when the fan body 134 rotates. The central hub of the fan body 134 is press-fitted or clearance-fitted with the inner ring of the oil-impregnated bearing, allowing for smooth rotation around the connecting shaft. To prevent the fan body 134 from axially shifting and falling off during rotation, a retaining ring is typically provided at the end of the connecting shaft. During assembly, the oil-impregnated bearing and the fan body 134 are first sequentially fitted onto the connecting shaft, and then the retaining ring is snapped into the retaining groove at the end of the connecting shaft to axially lock the fan body 134. The drive motor wires on the fan body 134 can pass through the central wire hole 1323 on the connecting shaft and be led to the rear of the base 132, allowing for easy electrical connection between the wires and the circuit board 135. Through this "internal wiring" design, when the fan body 134 rotates at high speed, its motor wires remain stationary, fundamentally eliminating the risk of wire entanglement, wear, or even breakage, greatly improving product safety and service life.

[0034] The rear surface of the base 132 is recessed inward to form a second receiving groove 1322 corresponding to the first receiving groove 1321. The first receiving groove 1321 and the second receiving groove 1322 are coaxially arranged. In order to achieve precise control of the speed of the fan body 134, the second receiving groove 1322 is also provided with the circuit board 135, the battery 136 electrically connected to the circuit board 135, and the speed regulating element 137 electrically connected to the circuit board 135. Among them, the battery 136 provides the electrical energy required for the operation of the entire fan head, and the speed regulating element 137 adjusts the speed of the fan body 134 according to the received control signal.

[0035] To achieve functional partitioning and electromagnetic shielding, the second receiving slot 1322 is provided with at least one partition 1324 in the middle, dividing it into a battery mounting cavity 1325 and a component mounting cavity 1326. The battery 136 is placed separately in the battery mounting cavity 1325; the circuit board 135 and the speed control element 137 are installed in the component mounting cavity 1326. The components in the two mounting cavities do not interfere with each other, the functional partitioning is clear, and the use is safer. The battery mounting cavity 1325 is connected to the first receiving slot 1321 through the central wire hole 1323, which facilitates the passage of the fan body's wires.

[0036] The component mounting cavity 1326 is equipped with positioning components for fixing the circuit board 135, such as two opposing fasteners, to ensure that the circuit board 135 will not easily shift. The component mounting cavity 1326 also has a positioning hole for fixing the speed regulating element 137. The speed regulating element 137 and the battery 136 are both electrically connected to the circuit board 135, which in turn is electrically connected to the fan body 134, forming a complete control circuit. In this embodiment, the speed regulating element 137 is preferably a rotary potentiometer as used in the prior art.

[0037] Furthermore, the drive ring 138 is a key component for transmitting driving force. The drive ring 138 includes an annular base 1382. The end of the base 1382 facing the fan body has a first opening 1383, and the end facing away from the fan body has a second opening 1384. Between the first opening 1383 and the second opening 1384, a toothed ring 1381 is integrally formed on the inner side of the base 1382. The control end of the speed regulating element 137 is fixedly connected to a drive gear 139, which meshes with the toothed ring 1381 on the inner side of the drive ring 138. Therefore, when the user rotates the drive ring 138, the drive gear 139 on the speed regulating element 137 can be rotated through the meshing transmission of the gear ring 1381. The speed regulating element 137 receives the mechanical rotation signal of the drive gear 139 and converts it into an electrical signal, which is then transmitted to the circuit board 135. The circuit board 135 changes the voltage or PWM signal output to the fan body 134 to control the stepless or multi-speed adjustment of the fan body 134.

[0038] To achieve overall encapsulation and axial fixation, the fan head also includes an upper cover 14. The shape of the upper cover 14 matches the shape of the second opening 1384 of the drive ring 138. The upper cover 14 has multiple connecting posts 141 on its surface facing the base 132. During assembly, the upper cover 14 is placed on the drive ring 138, allowing all connecting posts 141 to pass through the second opening 1384 of the drive ring 138, and then fixedly connected to the base 132 with screws to the pre-set screw holes. After the upper cover 14 and base 132 are assembled, the inner end face of the upper cover 14 abuts against the end face of the gear ring 1381, thereby axially locking the drive ring 138 to prevent it from falling off, while not affecting its circumferential rotation. Simultaneously, the upper cover 14 can also cooperate with the base 132 to seal and fix components such as the battery, circuit board, and speed control element in the second receiving groove 1322.

[0039] Example 2: This embodiment provides a complete fan product that uses the fan head described in Embodiment 1 above.

[0040] This embodiment provides a fan pack, including a bracket (not shown in the figure) and a fan head. The bracket supports the fan head and provides a stable base for placement. The fan head is rotatably connected to the bracket via an angle adjustment component, allowing the user to easily adjust the pitch or oscillation angle of the fan head to change the airflow direction. This angle adjustment component can adopt a rotating structure such as a universal damping ball joint or a pivot damping structure, which are existing technologies. The specific structure and working principle of the fan head used in this embodiment are exactly the same as those in Embodiment 1, and will not be repeated here. By applying the highly integrated and compact fan head from Embodiment 1 to the fan in this embodiment, a portable fan product with a simple appearance, convenient operation, and reliable performance can be obtained.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fan head, characterized in that, The device includes a mounting frame with an air duct. A blower module is fixedly mounted inside the air duct. The blower module includes an inner ring and a base fixedly disposed inside the inner ring, forming an airflow channel communicating with the air duct between the base and the inner ring. A fan body is rotatably mounted on the base. The base also includes a circuit board, a battery electrically connected to the circuit board, and a speed regulating element electrically connected to the circuit board. A drive ring is rotatably mounted on the base. A drive gear is fixedly connected to the speed regulating element, and a gear ring meshing with the drive gear is provided on the inner side of the drive ring. The speed regulating element receives the mechanical rotation of the drive gear and converts it into an electrical signal, which is output to the circuit board to control the speed of the fan body.

2. The fan head according to claim 1, characterized in that, The base is located at the rear end of the inner ring, and at least a portion of the rear end of the base protrudes beyond the rear end of the inner ring so that the drive ring can be rotatably fitted onto the base.

3. The fan head according to claim 1 or 2, characterized in that, The front surface of the base and the inner front surface of the inner ring form a first receiving groove; the fan body is rotatably mounted in the first receiving groove via a rotating assembly.

4. The fan head according to claim 3, characterized in that, The rear surface of the base is provided with a second receiving groove corresponding to the first receiving groove; the circuit board, the battery and the speed regulating element are installed in the second receiving groove; the first receiving groove and the second receiving groove are connected through a central wire hole.

5. The fan head according to claim 4, characterized in that, The second receiving groove is further provided with at least one partition in the middle to divide the second receiving groove into a battery mounting cavity and a component mounting cavity; the central wire hole is located in the battery mounting cavity; the component mounting cavity is further provided with a positioning component for positioning and fixing the circuit board, and a positioning hole for fixing the speed regulating component; the positioning hole is connected to the first receiving groove.

6. The fan head according to claim 1, characterized in that, The drive ring includes a ring-shaped base; the end of the base facing the fan body has a first opening, and the end facing away from the fan body has a second opening corresponding to the first opening; the toothed ring is located between the first opening and the second opening; the inner diameter of the toothed ring is smaller than the inner diameter of the second opening.

7. The fan head according to claim 6, characterized in that, The fan head also includes an upper cover that matches the second opening; the upper cover has a plurality of connecting posts extending toward the base on one side surface facing the first opening; the connecting posts can be fixedly connected to the base by screws; when the upper cover and the base are assembled in place, all the connecting posts pass through the drive ring and are connected to the base, and the upper cover abuts against the toothed ring.

8. The fan head according to any one of claims 1, 2, and 4-7, characterized in that, The airflow channel is also provided with a plurality of air guide plates connecting the base and the inner ring; the first end of the air guide plate connected to the base is higher than the second end connected to the inner ring, and the end faces of the first ends of the plurality of air guide plates are connected to form a limiting surface supporting the drive ring.

9. The fan head according to claim 1, characterized in that, The inner sidewall of the mounting frame is provided with a plurality of positioning blocks in a circumferential manner; the two ends of the positioning blocks extend toward the front and rear ends of the mounting frame respectively; a limiting ring is provided at the rear end of the inner ring, and a plurality of positioning strips extending toward the front end of the inner ring are provided on the outer sidewall of the inner ring on one side of the limiting ring in a circumferential manner; the positioning strips are provided with guide grooves for the positioning blocks to be inserted; after the mounting frame and the inner ring are assembled in place, the two are connected and fixed by a snap-fit ​​assembly.

10. A fan, characterized in that, Includes a bracket, which is rotatably mounted with a fan head as described in any one of claims 1-9 via an angle adjustment component.

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