A digital display clip fan

Abstract

The utility model provides a kind of digital display clamp fan, including shell, shell outer wall is equipped with clamp subassembly, shell includes front shell and rear shell, and the middle part of rear shell is equipped with the annular middle ring of hollow, and the inner groove and outer groove of middle ring are formed by the partition in middle ring being equipped with, and the middle part of inner groove towards front shell is equipped with middle column, and middle column is connected with driving element and the fan blade subassembly rotating around driving element, and the outer groove towards outside is equipped with control panel, and control panel is integrated with digital display module;Digital display module is integrated in control panel, and display function is realized using outer groove and transparent lens, and wiring and mounting structure are saved, and space utilization is improved, so that product is more portable, more compact;Adopt clamp subassembly of two-way opposite setting, can select clamping direction and position according to actual clamping demand;According to different configuration, three-phase or single-phase brushless motor is used, combined with FOC drive module, the efficient, stable operation of motor is realized, and operating noise and energy consumption are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a digital display clip-on fan. Background Technology

[0002] Currently, most portable fans on the market, due to size limitations, typically only offer speed adjustment functions and lack display modules for indicating speed and battery level. Users cannot monitor the device's operation in real time. Furthermore, traditional clip-on fans often employ a single-directional clamping structure with a fixed clamping direction, limiting their applicability and making them unsuitable for various clamping environments. Moreover, the redundant internal structure and complex wiring of traditional fans increase the product's size and weight, hindering portable design. In addition, regarding motor drives, most products still use brushed motors or basic brushless motor solutions, resulting in issues such as high noise, low energy efficiency, and noticeable torque fluctuations, impacting the user experience. Therefore, existing clip-on fans still have significant room for improvement in functionality, structural compactness, and user experience. Utility Model Content

[0003] (1) Technical problems to be solved This invention provides a digital display clip-on fan, which aims to solve the above-mentioned problems.

[0004] (2) Technical solution This utility model provides a digital display clip-on fan, including a housing with a clip assembly on the outer wall of the housing. The housing includes a front shell and a rear shell. The rear shell has a hollow annular middle ring in the middle. A partition is provided inside the middle ring to form an inner groove and an outer groove arranged opposite to each other. A central column is provided in the middle of the inner groove facing the front shell. The central column is connected to a drive component and a fan blade assembly that rotates around the drive component. A control board is provided in the outer groove facing outward. The control board integrates a digital display module. The housing also has a built-in battery. The battery and the drive component are electrically connected to the control board.

[0005] Furthermore, the outer cover of the outer slot is connected to a transparent display lens, and the digital display module inside the outer slot faces the display lens, allowing the user to see the digital display module through the display lens.

[0006] Furthermore, the rear cover is also embedded with a button module located on the same side as the display lens.

[0007] Furthermore, the clip assembly includes a first clip and a second clip, the first clip being disposed on one side of the housing and the second clip being disposed on the other side of the housing, the first clip and the second clip having opposite clamping directions.

[0008] Furthermore, the first clip and / or the second clip includes clip one and clip two, with a bending portion between clip one and clip two, the bending portion elastically deforming to continuously provide a closing clamping force to clip one and clip two.

[0009] Furthermore, the clip one and clip two are respectively fitted with anti-slip sleeve one and anti-slip sleeve two.

[0010] Furthermore, the fan blade assembly includes a fan blade, a rotating shaft inserted in the middle of the fan blade, and a magnetic ring coaxially arranged with the rotating shaft and connected to the fan blade. A bearing is provided inside the central column, and the rotating shaft is rotatably connected to the bearing, so that the fan blade and the magnetic ring rotate relative to each other on the central column. The driving member is sleeved on the outer wall of the central column, and the magnetic ring is coaxially sleeved on the outside of the driving member without contact.

[0011] Furthermore, the driving component is a three-phase brushless motor, the battery is powered by 7.4V, and the control board also integrates an FOC drive module.

[0012] Furthermore, the driving component is a single-phase brushless motor, the battery is powered by 3.7V, and a driving board is provided on one side of the driving component, the driving board integrating a boost module.

[0013] Furthermore, the partition is also provided with a wiring port connecting the outer groove and the inner groove, for placing the electrical wiring between the control board and the drive unit.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By integrating the digital display module into the control board and utilizing an outer slot and a transparent lens to achieve the display function, the complex wiring and installation structure of traditional independent display modules are eliminated, greatly improving the utilization of internal space and making the product lighter, more compact, and easier to carry and use. The bidirectional clamp assembly allows users to choose the clamping direction and position according to actual clamping needs, significantly expanding the application scenarios and improving the product's flexibility and practicality. Depending on the configuration, three-phase or single-phase brushless motors are used, combined with FOC drive modules or boost control, to achieve efficient and stable motor operation, effectively reducing operating noise and energy consumption, and improving battery life and user experience. Placing the buttons and digital display module on the same side allows users to intuitively view gear and battery information during operation, improving the convenience of interaction and user comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0017] Figure 3 This is a cross-sectional view of the shell of this utility model.

[0018] Figure 4 This is a cross-sectional view of the present invention.

[0019] Figure 5 This is an exploded view of the present invention.

[0020] Figure 6 This is a schematic diagram of the display module and button module of this utility model.

[0021] Figure 7 This is a schematic diagram of the clip assembly of this utility model.

[0022] Figure 8 This is a schematic diagram of the installation of the clip assembly of this utility model.

[0023] Figure 9 This is a schematic diagram of the fan blade assembly of this utility model.

[0024] Figure 10 This is a cross-sectional view of the fan blade assembly of this utility model.

[0025] Figure 11 This is a schematic diagram of the high-performance three-phase brushless motor of this utility model.

[0026] Figure 12 This is a schematic diagram of the low-configuration single-phase brushless motor of this utility model.

[0027] Reference numerals: 1-Front shell, 2-Rear shell, 21-Middle ring, 22-Baffle, 221-Wire port, 23-Inner groove, 24-Middle column, 241-Bearing, 25-Outer groove, 26-Control board, 261-Digital display module, 27-Display lens, 28-Button module, 3-Clip assembly, 31-First clip, 32-Second clip, 33-Clip 1, 331-Anti-slip sleeve 1, 34-Clip 2, 341-Anti-slip sleeve 2, 35-Bending part, 4-Drive component, 41-Drive board, 5-Fan blade assembly, 51-Fan blade, 52-Shaft, 53-Magnetic ring, 54-Annular mounting part, 55-Magnetic sleeve, 6-Battery. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figure 1-5As shown in the figure, this utility model provides a digital display clip fan, including a housing. The outer wall of the housing is provided with a clip assembly 3 and a button module 28. The upper end of the housing is provided with a hollow cylindrical cavity as a front-to-back air duct, and the lower end is provided with a rectangular cavity for placing a battery 6. The housing includes a front shell 1 and a rear shell 2. Both the front shell 1 and the rear shell 2 include half a hollow cylindrical cavity and half a rectangular cavity. That is, the front shell 1 and the rear shell 2 enclose a hollow cylindrical cavity and a rectangular cavity for placing the battery 6. As can be seen from the figure, the internal structure design of the digital display clip fan is very compact, making the housing very small and easy to carry. like Figure 3-4 As shown, the rear shell 2 has a hollow annular inner ring 21 in the middle. The inner ring 21 and the inner wall of the cylindrical cavity are connected by eight annular array ribs. This structural design does not affect the normal flow of air in the duct. The inner ring 21 has a partition 22 in the middle, which forms an inner groove 23 and an outer groove 25 arranged opposite to each other. The opening of the inner groove 23 faces the front shell 1 and communicates with half of the cylindrical cavity of the front shell 1. The opening of the outer groove 25 faces the outside of the shell. The inner groove 23 has a central column 24 extending forward and backward in the middle. The central column 24 is integrally formed with the partition 22. The central column 24 is connected to the drive component 4 and the fan blade assembly 5 that rotates around the drive component 4. The outer groove 25 has a control board 26. The battery 6, the drive component 4 and the button module 28 are all electrically connected to the control board 26. In addition, the control board 26 also integrates a digital display module 261 for displaying the power and speed of the digital display clip fan. In use, the digital display clip fan is fixed to an external object, such as a table or door panel, by the clip assembly 3. It can also be placed directly on a table or held directly in hand. It is started by pressing the button module 28. The battery 6 supplies power to the control board 26, the digital display module 261, and the drive component 4. The drive component 4 drives the fan blade assembly 5 to rotate and generate airflow. The rear end of the rear shell 2 is the air inlet, and the front end of the front shell 1 is the air outlet.

[0030] Specifically, such as Figure 6 As shown, in one embodiment of this utility model, a transparent display lens 27 is attached to the rear end of the outer groove 25. That is, the display lens 27 and the partition 22 surround each other to form the outer groove 25. The control board 26 is placed inside the outer groove 25, which can protect the control board 26. The digital display module 261 on the control board 26 is positioned facing the display lens 27. This structural design allows the user to see the digital display module 261 through the display lens 27 when in use. The digital display module 261 displays information such as power and gear position. In commercially available fans, the digital display module 261 is usually embedded outside the housing and electrically connected to the control board 26 via a circuit. This requires reserving wiring paths and occupies internal space of the fan. However, in this application, the digital display module 261 is integrated on the control board 26, eliminating the need for additional circuit wiring. By setting the outer slot 25 and the display lens 27, the user can still observe the display information on the digital display module 261. This structural design is very compact and does not occupy too much internal space.

[0031] Furthermore, the button module 28 is electrically connected to the control board 26. The digital display module 261 can display seven levels, namely 0%, 10%, 20%, 40%, 60%, 80%, and 100%. The button module 28 includes buttons 281 and a button motherboard 282. There are two buttons 281, which are arranged vertically to control the up and down of the digital display module 261. When the digital display module 261 is at the 0% level, the digital display clip fan does not work. Furthermore, such as Figure 6 As shown in the figure, the button 281 is embedded on the outer wall of the rear shell 2. As can be seen from the figure, the button 281 is embedded on the same side as the display lens 27. This structural design makes the button 281, the display lens 27 and the digital display module 261 on the same plane, which can be seen by the user at the same time. This allows the user to clearly and intuitively see the display level of the digital display module 261 when operating the button 281, thus improving the convenience of operation. In addition, from Figure 5-6 As can be seen, the button 281 is directly integrated on the button motherboard 282, and there is no wiring connection between the two. The button motherboard 282 is snapped into the rectangular cavity where the battery 6 is placed, specifically in the gap between the battery 6 and the back cover 2. This structural design makes the parts arrangement very compact and small, without occupying too much internal space, further compressing the overall volume of the digital display clip fan.

[0032] Specifically, such as Figure 7-8As shown, in one embodiment of this utility model, the clip assembly 3 includes a first clip 31 and a second clip 32. The first clip 31 is disposed on the side of the housing, and the second clip 32 is disposed on the other side of the housing. The clamping directions of the first clip 31 and the second clip 32 are opposite. The first clip 31 is connected to the side of the rear shell 2 with a forward clamping direction, and the second clip 32 is integrally connected to the side of the front shell 1 with a rear clamping direction. This structural design greatly expands the clamping scenarios of the clip assembly 3, allowing for free selection based on specific clamping scenarios. For example, whether the item to be clamped is on the left or right side, and whether the clamping direction is forward or backward, avoids limiting the clamping scenarios of the clip assembly 3 to a single clip and a single clamping direction, which would lead to a poor user experience.

[0033] Furthermore, such as Figure 7-8 As shown, the first clip 31 is screwed to the side of the rear shell 2. The first clip 31 includes a first clip 33 and a second clip 34, both made of alloy manganese steel. A bending portion 35 is provided between the first clip 33 and the second clip 34. The bending portion 35 can elastically form, continuously providing a closing clamping force to the first clip 33 and the second clip 34. In use, the second clip 34 is bent outward to increase the clamping gap for easy insertion of the clamped item. The bending portion 35 undergoes elastic deformation and continuously provides a closing clamping force to the first clip 33 and the second clip 34. At this time, the second clip 34 is released, and the first clip 33 and the second clip 34 clamp the item.

[0034] Furthermore, such as Figure 7-8 As shown, in order to increase the friction between the clamping clips 33 and 34 and the clamped items, and to clamp the items more securely, the clamping clips 33 and 34 are respectively fitted with anti-slip sleeves 331 and 341. The anti-slip sleeves 331 and 341 are both heat shrink tubing. The heat shrink tubing is a specially made polyolefin heat shrink tubing. During processing, the heat shrink tubing is heated to a high elastic state, a load is applied to expand it, and it is fitted onto the clamping clips 33 and 34. Then, through rapid cooling, it shrinks and wraps around the surface of the clamping clips 33 and 34.

[0035] Specifically, such as Figure 9-10As shown, in one embodiment of this utility model, the fan blade assembly 5 includes a fan blade 51, a rotating shaft 52, and a magnetic ring 53 that are fixedly connected to each other. The rotating shaft 52 is inserted and fixed in the middle of the fan blade 51. The fan blade 51 extends rearward to have an annular mounting portion 54. The magnetic ring 53 is coaxially connected to the inner wall of the annular mounting portion 54. The annular mounting portion 54 and the magnetic ring 53 are connected by a magnetic sleeve 55, which is an annular iron ring. The central column 24 is provided with a bearing 241. The rotating shaft 52 is inserted into the bearing 241 and rotatably connected to the rotating shaft 52, so that the fan blade 51 and the magnetic ring 53 are also rotatably connected to the central column 24. The drive component 4 is sleeved and connected to the outer wall of the central column 24. The magnetic ring 53 is sleeved on the outer wall of the drive component 4. It is worth noting that the magnetic ring 53 is sleeved on the drive component 4 coaxially without contact. When the magnetic ring 53 generates a changing magnetic field after being energized, it can drive the magnetic ring 53 to rotate around the drive component 4, and at the same time drive the fan blade 51 and the rotating shaft 52 to rotate, thereby generating wind.

[0036] Furthermore, such as Figure 11-12 As shown, the product of this application has two versions, a low-end version and a high-end version. In the low-end version, the drive unit 4 is a single-phase brushless motor, and the battery 6 is powered by 3.7V. The drive unit 4 is also connected to a drive board 41, which integrates a boost module. The single-phase brushless motor used in the low-end version has a lower cost, simpler structure, and relatively cheaper price. The battery 6 powered by 3.7V makes the battery lighter and reduces the overall weight of the fan.

[0037] Furthermore, such as Figure 11-12 As shown, in the high-end version, since the low-end version requires the boost module to raise the 3.7V power supply of the battery 6 to 7.4V to drive the motor, the boost module consumes 10% of the power, reducing battery utilization and fan range. Therefore, the high-end version uses 7.4V power supply and the drive unit 4 of the three-phase brushless motor. Furthermore, the drive board 41 is not required; all modules are integrated onto the control board 26. The control board 26 also integrates a forcibly ignited (FOC) drive module for controlling the drive unit 4 of the three-phase brushless motor. Conventional methods for driving the drive unit 4 typically involve square wave drive and open-loop control. This method results in uneven motor operation, large torque fluctuations, some current noise, slow response, and the rotating magnetic field not always maintaining a 90-degree angle with the stator poles, leading to low energy efficiency. In contrast, the FOC drive module used in this application employs vector control, which reduces the vibration of the three-phase brushless motor, lowers fan noise, ensures smooth motor operation, low noise, fast response, and high efficiency. Furthermore, through current sampling and angle estimation, it ensures that the rotating magnetic field always maintains a 90-degree angle with the stator poles, maximizing torque.

[0038] Specifically, such as Figure 3 As shown, in one embodiment of this utility model, the partition 22 is further provided with a wiring port 221 that connects the outer groove 25 and the inner groove 23, for placing the electrical wiring between the control board 26 and the drive component 4.

[0039] The following is a detailed explanation of the working principle of this utility model; Users can attach the fan to external objects such as tabletops and railings using the clip assembly, or use it handheld or placed on a flat surface. Pressing the button in the button module sends a signal to the control board, activating the drive unit. The battery powers the control board, digital display module, and drive unit. Once powered, the drive unit generates a magnetic field, which drives the magnetic ring and fan blade assembly to rotate around the central column, thus generating airflow. Air is drawn in through the rear inlet, accelerated by the fan blades, and then blown out through the front outlet. The digital display module shows the current battery level and fan speed in real time. Users can adjust the fan speed (seven levels in total, including a 0% off setting) via buttons. The control board adjusts the output power of the drive unit based on the fan speed signal to achieve fan speed control. In the high-end version, the FOC drive module ensures smooth and efficient motor operation through precise control of current and rotation angle; the low-end version uses a boost module in the drive board to increase the voltage to drive the motor. The overall structure achieves isolation between the circuit and the air duct through the design of the middle ring, partition, inner and outer grooves, which not only ensures safety but also optimizes the air duct efficiency, enabling the product to maintain good performance in a compact structure.

[0040] The innovation of this utility model lies in: Integrated digital display and compact structural design: By integrating the digital display module into the control board and utilizing an outer slot and transparent lens to achieve the display function, the complex wiring and installation structure of traditional independent display modules are eliminated, greatly improving the utilization of internal space and making the product lighter, more compact, and easier to carry and use; Bidirectional clamping structure enhances applicability: The bidirectional clamping components allow users to choose the clamping direction and position according to actual clamping needs, significantly expanding the application scenarios and improving the product's flexibility and practicality; High-efficiency and low-noise drive solution: Depending on the configuration, three-phase or single-phase brushless motors are used, combined with FOC drive modules or boost control, to achieve efficient and stable motor operation, effectively reducing operating noise and energy consumption, and improving battery life and user experience; User-friendly operation and visual experience: The buttons and digital display module are located on the same side, allowing users to intuitively view gear and battery information during operation, improving the convenience of interaction and the comfort of use.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A digital display clip-on fan, characterized in that, The housing includes a housing with a clip assembly (3) on its outer wall. The housing includes a front shell (1) and a rear shell (2). The rear shell (2) has a hollow annular ring (21) in the middle. The ring (21) has a partition (22) inside it, which forms an inner groove (23) and an outer groove (25) that are arranged opposite to each other. The inner groove (23) facing the front shell (1) has a central column (24) in the middle. The central column (24) is connected to a drive member (4) and a fan blade assembly (5) that rotates around the drive member (4). The outer groove (25) facing outward has a control board (26) inside it. The control board (26) integrates a digital display module (261). The housing also has a built-in battery (6). The battery (6) and the drive member (4) are electrically connected to the control board (26).

2. The digital display clip-on fan according to claim 1, characterized in that, The outer groove (25) is covered with a transparent display lens (27), and the digital display module (261) inside the outer groove (25) faces the display lens (27), so that the user can see the digital display module (261) through the display lens (27).

3. A digital display clip-on fan according to claim 2, characterized in that, The rear shell (2) is also fitted with a button module (28) located on the same side as the display lens (27).

4. A digital display clip-on fan according to claim 1, characterized in that, The clip assembly (3) includes a first clip (31) and a second clip (32). The first clip (31) is disposed on the side of the housing, and the second clip (32) is disposed on the other side of the housing. The clamping directions of the first clip (31) and the second clip (32) are opposite.

5. A digital display clip-on fan according to claim 4, characterized in that, The first clamp (31) and / or the second clamp (32) include a first clamp (33) and a second clamp (34), with a bend (35) between the first clamp (33) and the second clamp (34), and the bend (35) elastically deforms to continuously provide a closing clamping force to the first clamp (33) and the second clamp (34).

6. A digital display clip-on fan according to claim 5, characterized in that, The clip one (33) and clip two (34) are also respectively fitted with anti-slip sleeve one (331) and anti-slip sleeve two (341).

7. A digital display clip-on fan according to claim 1, characterized in that, The fan blade assembly (5) includes a fan blade (51), a rotating shaft (52) inserted in the middle of the fan blade (51), and a magnetic ring (53) coaxially arranged with the rotating shaft (52) and connected to the fan blade (51). A bearing (241) is provided in the central column (24). The rotating shaft (52) is rotatably connected to the bearing (241), so that the fan blade (51) and the magnetic ring (53) rotate relative to each other in the central column (24). The driving member (4) is sleeved on the outer wall of the central column (24), and the magnetic ring (53) is coaxially sleeved on the outside of the driving member (4) without contact.

8. A digital display clip-on fan according to claim 7, characterized in that, The drive unit (4) is a three-phase brushless motor, the battery (6) is powered by 7.4V, and the control board (26) also integrates an FOC drive module.

9. A digital display clip-on fan according to claim 7, characterized in that, The drive unit (4) is a single-phase brushless motor, the battery (6) is powered by 3.7V, and a drive board (41) is provided on one side of the drive unit (4), and the drive board (41) integrates a boost module.

10. A digital display clip-on fan according to claim 1, characterized in that, The partition (22) is also provided with a wiring port (221) connecting the outer groove (25) and the inner groove (23) for placing the electrical connection line between the control board (26) and the drive unit (4).

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