Handheld fan

Abstract

The invention provides a handheld fan which comprises a fan body, a fan cover and a fan cover. The handle is connected with the fan main body, and the handle is provided with a trackball, a detection device and a control mainboard; wherein the detection device is electrically connected with the control mainboard, the detection device is used for detecting the rotating direction of the trackball, and the control mainboard is used for adjusting the air speed of the air outlet assembly according to the rotating direction of the trackball. By arranging the trackball, the detection device and the control mainboard on the handle, the air speed of the air outlet assembly can be accurately adjusted, a user only needs to roll the trackball, the rotation direction of the trackball can be recognized through the detection device, and the increase and decrease of the air speed are controlled through the control mainboard. Compared with a traditional button type or touch control type adjustment mode, the adjustment mode is more visual and flexible, the operation convenience and interactivity are improved, the rotation operation of the trackball has good hand feeling feedback, and the use experience can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of fans, and in particular to a handheld fan. Background Art

[0002] In hot summer environments, portable handheld fans are popular due to their lightness and flexibility. However, most handheld fans currently on the market use buttons or knobs to adjust the wind speed. This traditional operation method is not only limited in function but also lacks intuitiveness and convenience in the adjustment process, leaving the user experience to be improved.

[0003] Therefore, there is a need to provide a handheld fan on the market that can adjust the fan's wind speed more quickly and accurately, thereby improving the convenience of use and user experience of the handheld fan. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a handheld fan, which can adjust the wind speed of the fan more quickly and accurately, thereby improving the convenience of use of the handheld fan and the user experience.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The present invention provides a handheld fan, comprising:

[0007] A fan body, the fan body including an air outlet assembly;

[0008] A handle connected to the fan body, the handle being equipped with a trackball, a detection device, and a control mainboard;

[0009] The detection device is electrically connected to the control mainboard, and the detection device is used to detect the rotation direction of the trackball. The control mainboard is used to adjust the wind speed of the air outlet assembly according to the rotation direction of the trackball.

[0010] As an improvement of the present invention, the air outlet assembly includes a motor, a rotating shaft connected to the motor, and fan blades connected to the rotating shaft, and the control motherboard is used to adjust the rotation speed of the motor and the fan blades according to the rotation direction of the trackball.

[0011] As an improvement of the present invention, the detection device includes an image sensor, which is used to emit a light source to illuminate the trackball. The trackball is rotated so that the trackball reflects light to the image sensor. The control motherboard determines the rotation direction of the trackball based on the amount of reflected light received by the image sensor, and the control motherboard adjusts the input voltage of the motor based on the rotation direction.

[0012] As an improvement of the present invention, the detection device further includes a light guide disposed between the image sensor and the trackball, the light guide being used to guide and gather the light source emitted by the image sensor and image the light onto the trackball, and the light guide being used to guide and gather the light reflected by the trackball onto the image sensor.

[0013] As an improvement of the present invention, when the trackball is rotated upward, the control mainboard increases the input voltage of the motor to increase the rotational speed of the motor and the fan blades; when the trackball is rotated downward, the control mainboard reduces the input voltage of the motor to reduce the rotational speed of the motor and the fan blades; when the trackball is rotated rightward, the control mainboard increases the input voltage of the motor to increase the rotational speed of the motor and the fan blades; when the trackball is rotated leftward, the control mainboard reduces the input voltage of the motor to reduce the rotational speed of the motor and the fan blades.

[0014] As an improvement of the present invention, the light guide includes a focusing lens, the control mainboard is provided with a DSP processor, the image sensor is used to emit a light source to illuminate the trackball through the focusing lens, the trackball is rotated so that the trackball reflects light to the image sensor, the DSP processor determines the rotation direction of the trackball based on the amount of reflected light received by the image sensor, and the DSP processor adjusts the input voltage of the motor based on the rotation direction.

[0015] As an improvement of the present invention, the handle includes a handle shell, which is surrounded by an installation space, and the handle shell has a first installation shell that is recessed from the outer wall of the handle shell toward the installation space, and the first installation shell has a sphere fixing cavity; the handle shell is provided with a second installation shell located in the installation space and connected to the first installation shell, the second installation shell has an installation cavity, and the sphere fixing cavity is provided with a light guide hole connected to the installation cavity; the trackball can be rotatably installed in the sphere fixing cavity, the light guide is installed in the installation cavity, and the control main board is installed in the installation space.

[0016] As an improvement of the present invention, the ball fixing cavity is a cavity with a partial spherical shape adapted to the trackball, and the ball fixing cavity is provided with a limiting groove, and a ball is provided in the limiting groove; the ball fixing cavity is provided with three limiting grooves, and the three limiting grooves are arranged in a ring array in the ball fixing cavity, and the ball is placed in each of the three limiting grooves.

[0017] As an improvement of the present invention, the first mounting shell has a surrounding edge protruding from the outer wall of the handle shell, and a mounting ring groove is formed around the surrounding edge. The handle is also equipped with a ball fixing ring for fixing the trackball, and the ball fixing ring is arranged in the mounting ring groove; a buckle is protruding from the bottom end of the periphery of the ball fixing ring, and the first mounting shell is provided with a slot that cooperates with the buckle.

[0018] As an improvement of the present invention, the handle is further provided with a switch button and a power charging port, and the switch button and the power charging port are both electrically connected to the control mainboard.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a handheld fan, comprising: a fan body, the fan body including an air outlet assembly; a handle, the handle being connected to the fan body, the handle being equipped with a trackball, a detection device, and a control mainboard; wherein the detection device is electrically connected to the control mainboard, the detection device is used to detect the rotation direction of the trackball, and the control mainboard is used to adjust the wind speed of the air outlet assembly according to the rotation direction of the trackball. By arranging the trackball, the detection device, and the control mainboard on the handle, it is possible to achieve precise adjustment of the wind speed of the air outlet assembly. The user only needs to roll the trackball to identify the rotation direction of the trackball through the detection device, and the control mainboard controls the increase or decrease of the wind speed. Compared with traditional button-type or touch-type adjustment, this adjustment method is more intuitive and flexible, improves the convenience and interactivity of operation, and the rotation operation of the trackball has good tactile feedback, which can greatly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 It is a logic block diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention after removing the trackball and the ball fixing ring;

[0025] Figure 4 is a cross-sectional view of the present invention taken along the trackball;

[0026] Figure 5 is an exploded view of the present invention;

[0027] Figure 6 It is an exploded view from another perspective of the present invention. DETAILED DESCRIPTION

[0028] refer to Figures 1 to 6 , a handheld fan, comprising:

[0029] The fan body 1 includes an air outlet assembly 2;

[0030] A handle 3 is connected to the fan body 1 and is equipped with a trackball 4, a detection device 5, and a control mainboard 6;

[0031] The detection device 5 is electrically connected to the control mainboard 6 . The detection device 5 is used to detect the rotation direction of the trackball 4 . The control mainboard 6 is used to adjust the wind speed of the air outlet assembly 2 according to the rotation direction of the trackball 4 .

[0032] The above structure, with the trackball 4, detection device 5, and control board 6 provided on the handle 3, enables precise adjustment of the wind speed of the air outlet assembly 2. The user simply rolls the trackball 4, and the detection device 5 identifies the rotation direction of the trackball 4, which in turn controls the wind speed via the control board 6. Compared to traditional button-based or touch-based adjustment, this adjustment method is more intuitive and flexible, improving operational convenience and interactivity. Furthermore, the rotation of the trackball 4 provides excellent tactile feedback, significantly enhancing the user experience.

[0033] In this embodiment, the air outlet assembly 2 includes a motor 21 , a shaft 22 connected to the motor 21 , and blades 23 connected to the shaft 22 . The control board 6 adjusts the rotation speed of the motor 21 and the blades 23 according to the rotation direction of the trackball 4 .

[0034] Through the above structure, the control board 6 is electrically connected to the adjustment motor 21. The control board 6 adjusts the speed of the motor 21 and the fan blades 23 according to the rotation direction of the trackball 4, thereby achieving infinite adjustment of the wind speed. Compared with the traditional multi-speed speed switching method, the present invention can achieve smoother and more continuous wind speed adjustment, improving the adaptability and comfort of the fan in different usage scenarios.

[0035] In this embodiment, the detection device 5 includes an image sensor 51, which is used to emit light to illuminate the trackball 4. The trackball 4 is rotated so that the trackball 4 reflects light to the image sensor 51. The control motherboard 6 determines the rotation direction of the trackball 4 based on the amount of reflected light received by the image sensor 51. The control motherboard 6 adjusts the input voltage of the motor 21 based on the rotation direction.

[0036] The above-described structure, through the use of image sensor 51, achieves optical recognition of the rotation direction of trackball 4. Image sensor 51 illuminates trackball 4 with a light source and receives the amount of light reflected per unit time. This information is then accurately detected by the analysis circuitry of control board 6, thereby avoiding the potential issues of contact wear and response lag associated with traditional mechanical detection devices 5 and improving the device's durability and response sensitivity. Furthermore, control board 6 dynamically adjusts the input voltage to motor 21 based on the detected rotation direction of trackball 4, achieving infinitely variable fan speed control. This provides smoother and more precise speed adjustment, meeting the diverse user comfort requirements in different environments.

[0037] In this embodiment, the detection device 5 further includes a light guide 52 disposed between the image sensor 51 and the trackball 4. The light guide 52 is configured to guide and focus the light emitted by the image sensor 51 and illuminate the trackball 4 as an image. The light guide 52 is also configured to guide and focus the light reflected by the trackball 4 to the image sensor 51. The aforementioned structure, by providing the light guide 52 between the image sensor 51 and the trackball 4, allows the light emitted by the image sensor 51 to be more concentrated and precisely illuminated onto the surface of the trackball 4. It also effectively guides and focuses the light reflected by the trackball 4 to the image sensor 51, thereby improving the imaging quality and acquisition efficiency of optical detection.

[0038] Furthermore, when the trackball 4 is rotated upward, the control motherboard 6 increases the input voltage of the motor 21 to increase the rotational speed of the motor 21 and the fan blades 23; when the trackball 4 is rotated downward, the control motherboard 6 reduces the input voltage of the motor 21 to reduce the rotational speed of the motor 21 and the fan blades 23; when the trackball 4 is rotated to the right, the control motherboard 6 increases the input voltage of the motor 21 to increase the rotational speed of the motor 21 and the fan blades 23; when the trackball 4 is rotated to the left, the control motherboard 6 reduces the input voltage of the motor 21 to reduce the rotational speed of the motor 21 and the fan blades 23.

[0039] Through this structure, by configuring the voltage regulation logic for motor 21 to correspond to different rotation directions of trackball 4, users can flexibly control the wind speed through simple and intuitive gestures. When the user rolls trackball 4 upward or rightward, control board 6 increases the input voltage to motor 21, increasing the speed of fan blades 23 and enhancing the air output. Conversely, when the user rolls trackball 4 downward or leftward, control board 6 decreases the input voltage, reducing the wind speed. This design enhances the human-computer interaction experience while avoiding cumbersome button manipulation, making it particularly suitable for one-handed operation and enhancing the practicality and convenience of the handheld fan.

[0040] In this embodiment, the light guide 52 includes a focusing lens 521, and the control motherboard 6 includes a DSP processor 61. The image sensor 51 is configured to emit light through the focusing lens 521 and onto the trackball 4. The trackball 4 rotates to reflect light onto the image sensor 51. The DSP processor 61 determines the rotation direction of the trackball 4 based on the amount of reflected light received by the image sensor 51. The DSP processor 61 also adjusts the input voltage of the motor 21 based on the rotation direction. Through this structure, the focusing lens 521 effectively focuses and directs the light emitted by the image sensor 51, ensuring a more concentrated illumination of the trackball 4 surface. This enhances the illumination intensity and accuracy, thereby improving the quality of the light signal reflected from the trackball 4. After the image sensor 51 receives clearer and more stable reflected light, the DSP processor 61 can accurately analyze the reflected light with higher computational efficiency and quickly determine the rotation direction of the trackball 4. Compared to traditional microcontrollers, the DSP processor 61 possesses greater data processing capabilities and response speed.

[0041] In this embodiment, the handle 3 includes a handle shell 31, which is surrounded by an installation space 32. The handle shell 31 has a first installation shell 33 that is recessed from the outer wall of the handle shell 31 toward the installation space 32. The first installation shell 33 has a sphere fixing cavity 331; the handle shell 31 is provided with a second installation shell 34 located in the installation space 32 and connected to the first installation shell 33, the second installation shell 34 has a mounting cavity 341, and the sphere fixing cavity 331 is provided with a light guide hole 3311 that is connected to the mounting cavity 341; the trackball 4 can be rotatably installed in the sphere fixing cavity 331, the light guide part 52 is installed in the mounting cavity 341, and the control main board 6 is installed in the installation space 32.

[0042] Through the above structure, the first mounting shell 33 and the second mounting shell 34 are provided to realize the partitioned arrangement and stable installation of the trackball 4, the light guide 52, and the control main board 6. The provision of the ball fixing cavity 331 ensures that the trackball 4 can be flexibly rotated. At the same time, through the light guide hole 3311 connected to the mounting cavity 341, the light source emitted by the image sensor 51 and the light reflected by the trackball 4 can be smoothly transmitted.

[0043] Furthermore, the ball-holding cavity 331 is a partially spherical cavity that fits the trackball 4. It is provided with a retaining groove 332, within which a ball 3321 is positioned. The ball-holding cavity 331 is provided with three retaining grooves 332 arranged in a circular array within the cavity, each containing a ball 3321. This structure, by designing the ball-holding cavity 331 as a partially spherical cavity that fits the trackball 4 and providing three retaining grooves 332 arranged in a circular array within the cavity, each containing a ball 3321, ensures stable support and flexible rotation of the trackball 4.

[0044] In this embodiment, the first mounting housing 33 has a peripheral edge 333 protruding from the outer wall of the handle housing 31. A mounting groove 3331 is formed around the peripheral edge 333. The handle 3 is also equipped with a ball retaining ring 41 for securing the trackball 4. The ball retaining ring 41 is positioned within the mounting groove 3331. A latch 411 protrudes from the bottom edge of the ball retaining ring 41, and the first mounting housing 33 is provided with a slot 334 that engages with the latch 411. This structure allows the ball retaining ring 41 to be mounted within the mounting groove 3331. The latch 411 provided at the bottom edge of the ball retaining ring 41 engages with the slot 334 in the first mounting housing 33. This ensures that the mounting structure for the trackball 4 is both reliable and easy to assemble and disassemble. This also helps enhance the structural integrity and durability of the entire handheld fan device, making it suitable for a variety of daily use environments.

[0045] In this embodiment, the handle 3 is further provided with a switch button 7 and a power charging port 8, both of which are electrically connected to the control motherboard 6. Through the above structure, by providing the switch button 7 and the power charging port 8 on the handle 3 and electrically connecting them to the control motherboard 6, a convenient user operation experience and charging function are provided.

[0046] The above is one or more embodiments provided in conjunction with specific content, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of the present invention, or any technical deduction or replacement based on the concept of the present invention, shall be considered within the scope of protection of the present invention.

Claims

1. A handheld fan, characterized in that: include: A fan main body (1), the fan main body (1) comprising an air outlet assembly (2); A handle (3), the handle (3) being connected to the fan body (1), the handle (3) being equipped with a trackball (4), a detection device (5) and a control mainboard (6); The detection device (5) is electrically connected to the control mainboard (6), and the detection device (5) is used to detect the rotation direction of the trackball (4). The control mainboard (6) is used to adjust the wind speed of the air outlet component (2) according to the rotation direction of the trackball (4).

2. A handheld fan according to claim 1, characterized in that: The air outlet assembly (2) includes a motor (21), a rotating shaft (22) connected to the motor (21), and fan blades (23) connected to the rotating shaft (22). The control mainboard (6) is used to adjust the rotation speed of the motor (21) and the fan blades (23) according to the rotation direction of the trackball (4).

3. A handheld fan according to claim 2, characterized in that: The detection device (5) includes an image sensor (51), the image sensor (51) is used to emit a light source to illuminate the trackball (4), the trackball (4) is rotated so that the trackball (4) reflects light to the image sensor (51), the control mainboard (6) determines the rotation direction of the trackball (4) according to the amount of reflected light received by the image sensor (51), and the control mainboard (6) adjusts the input voltage of the motor (21) according to the rotation direction.

4. A handheld fan according to claim 3, characterized in that: The detection device (5) further comprises a light guide (52) arranged between the image sensor (51) and the trackball (4), wherein the light guide (52) is used to guide and gather the light source emitted by the image sensor (51) and to form an image to illuminate the trackball (4), and the light guide (52) is also used to guide and gather the light reflected by the trackball (4) to the image sensor (51).

5. A handheld fan according to claim 3, characterized in that: When the trackball (4) is rotated upward, the control main board (6) increases the input voltage of the motor (21) to increase the rotation speed of the motor (21) and the fan blade (23); when the trackball (4) is rotated downward, the control main board (6) reduces the input voltage of the motor (21) to reduce the rotation speed of the motor (21) and the fan blade (23); when the trackball (4) is rotated rightward, the control main board (6) increases the input voltage of the motor (21) to increase the rotation speed of the motor (21) and the fan blade (23); when the trackball (4) is rotated leftward, the control main board (6) reduces the input voltage of the motor (21) to reduce the rotation speed of the motor (21) and the fan blade (23).

6. A handheld fan according to claim 4, characterized in that: The light guide (52) includes a condenser lens (521), the control mainboard (6) is provided with a DSP processor (61), the image sensor (51) is used to emit a light source to illuminate the trackball (4) through the condenser lens (521), the trackball (4) is rotated so that the trackball (4) reflects light to the image sensor (51), the DSP processor (61) determines the rotation direction of the trackball (4) according to the amount of reflected light received by the image sensor (51), and the DSP processor (61) adjusts the input voltage of the motor (21) according to the rotation direction.

7. A handheld fan according to claim 4, characterized in that: The handle (3) includes a handle shell (31), the handle shell (31) is surrounded by an installation space (32), the handle shell (31) has a first installation shell (33) recessed from the outer wall of the handle shell (31) toward the installation space (32), the first installation shell (33) has a ball fixing cavity (331); the handle shell (31) is provided with a second installation shell (34) located in the installation space (32) and connected to the first installation shell (33), the second installation shell (34) has a mounting cavity (341), the ball fixing cavity (331) is provided with a light guide hole (3311) connected to the mounting cavity (341); the trackball (4) is rotatably mounted in the ball fixing cavity (331), the light guide member (52) is mounted in the mounting cavity (341), and the control mainboard (6) is mounted in the installation space (32).

8. A handheld fan according to claim 7, characterized in that: The ball fixing cavity (331) is a cavity with a partial spherical shape adapted to the trackball (4), and the ball fixing cavity (331) is provided with a limiting groove (332), and a ball (3321) is provided in the limiting groove (332); the ball fixing cavity (331) is provided with three limiting grooves (332), and the three limiting grooves (332) are arranged in a ring array in the ball fixing cavity (331), and the ball (3321) is placed in each of the three limiting grooves (332).

9. The handheld fan according to claim 7, characterized in that: The first mounting shell (33) has a peripheral edge (333) protruding from the outer wall of the handle shell (31), and a mounting ring groove (3331) is formed around the peripheral edge (333). The handle (3) is also equipped with a ball fixing ring (41) for fixing the trackball (4), and the ball fixing ring (41) is arranged in the mounting ring groove (3331); a buckle (411) is protruding from the bottom end of the peripheral edge of the ball fixing ring (41), and the first mounting shell (33) is provided with a clamping groove (334) that cooperates with the buckle (411) to be clamped.

10. The handheld fan according to claim 1, characterized in that: The handle (3) is further provided with a switch button (7) and a power charging port (8), and the switch button (7) and the power charging port (8) are both electrically connected to the control mainboard (6).

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