A hand-held fan

Abstract

The utility model discloses a handheld fan, including the casing, the casing includes handle part and the air duct part, be provided with the inner tube in the air duct part, be provided with the air outlet pipe at the air outlet of air duct part, and the inner diameter of air outlet pipe gradually reduces from the one end close to inner tube to the one end away from inner tube, the inner diameter of the one end close to inner tube of air outlet pipe is same with the inner diameter of inner tube, be provided with the fan in the inner tube, be provided with battery and PCB board in the handle part, and the fan and battery all are electrically connected with PCB board, be provided with two -way charging interface on the PCB board, and the position of handle part corresponding two -way charging interface is provided with the charging socket, the utility model discloses the aperture of first air inlet and final air outlet is different, can make air form the pressure increase when flowing through because of the passage narrowing, and then enhance the air -out wind force, the utility model is provided with battery, PCB board and two -way charging interface, so that the utility model can power supply for mobile phone, smart watch and other external equipment in the outdoor emergency.

Description

Technical Field

[0001] This utility model relates to the field of fans, specifically a handheld fan. Background Technology

[0002] In outdoor sports such as mountaineering and hiking, the high temperatures and strenuous activity levels cause the body's metabolic rate to accelerate, generating a significant amount of heat. Portable devices, including handheld fans, that can help cool down anytime, anywhere have become standard equipment for outdoor enthusiasts.

[0003] There are many types and structures of handheld fans on the market. For example, the utility model patent with application number 201921833934.8 provides a portable handheld fan, which includes a fan body and a fan handle integrally connected to the fan body. The end of the fan handle is provided with a channel that runs through the shell. A carabiner is inserted into the channel. At least one continuous segment of the carabiner hook is set as a straight edge. The straight edge passes through the channel. A silicone tube is wrapped around the straight edge in the circumferential direction. The silicone tube is damped and connected to a damping element set on the inner wall of the channel.

[0004] For example, utility model patent application number 202323602723.2 provides a handheld fan with a foldable carabiner, including a handle. One end of the handle is connected to a fan assembly, and the other end of the handle is connected to an annular buckle. One side of the buckle is rotatably connected to the handle. The buckle has a positioning groove, and the handle has a positioning protrusion that cooperates with the positioning groove. The positioning protrusion and the positioning groove cooperate to prevent the buckle from rotating. The handheld fan can stand upright on a table with the help of the buckle, and the buckle can be rotated open and folded into the handle housing.

[0005] Both of these handheld fans feature a carabiner design, making them convenient for carrying during hiking and sports activities. However, the air inlet and outlet of both fans have the same diameter, resulting in no air pressure boost and weak airflow. Furthermore, neither fan can charge mobile phones or other electronic devices, failing to meet the emergency power needs of these devices in outdoor settings when their batteries run out, thus reducing their overall practicality. Utility Model Content

[0006] The purpose of this invention is to provide a handheld fan that improves upon the problems of weak airflow and inability to charge mobile phones and other electronic devices in existing handheld fans.

[0007] This utility model is implemented as follows: A handheld fan includes a housing, which includes a handle and a fan tube. An inner tube is disposed within the fan tube, and an outlet fan is disposed at the outlet of the fan tube. The inner diameter of the outlet fan gradually decreases from the end closer to the inner tube towards the end farther from the inner tube, with the inner diameter of the outlet fan near the inner tube being the same as the inner diameter of the inner tube. A fan is disposed within the inner tube. A battery and a PCB board are disposed within the handle, and both the fan and the battery are electrically connected to the PCB board. A bidirectional charging interface is disposed on the PCB board, and a charging port is disposed on the handle corresponding to the bidirectional charging interface.

[0008] Furthermore, a control switch is also provided on the PCB board, and a switch button cap is provided on the handle part corresponding to the position of the control switch.

[0009] Furthermore, a carabiner is provided on the handle, and the carabiner and the PCB board are located on the same side of the battery.

[0010] Furthermore, the ventilation duct section also includes an ambient light tube, located between the inner tube and the exhaust duct, with the inner diameter of the ambient light tube being the same as that of the inner tube. The ambient light tube contains a light-transmitting cover, comprising a cylindrical portion and an arc-shaped head. The cylindrical portion is located within the ambient light tube, and both portions share a central axis, forming an exhaust channel between them. The exhaust channel contains multiple connecting plates for connecting the cylindrical portion and the ambient light tube, with each connecting plate evenly distributed along the circumference of the ambient light tube. The light-transmitting cover contains an LED light, which is electrically connected to the PCB board.

[0011] Furthermore, a first arc-shaped baffle and a second arc-shaped baffle are sequentially arranged on the inner wall of the air duct section along its circumferential direction. The distance between the first arc-shaped baffle and the second arc-shaped baffle is the sum of the lengths of the inner cylinder and the ambient light tube. The inner cylinder and the ambient light tube are arranged between the first arc-shaped baffle and the second arc-shaped baffle.

[0012] Furthermore, the inner wall of the duct section is provided with two parallel limiting strips spaced a distance apart, the length direction of which is along the length direction of the duct section; the wall of the ambient light tube is provided with a limiting slot, and the two limiting strips are inserted into the limiting slot of the ambient light tube to prevent the ambient light tube from rotating; the inner tube is provided with at least two insertion holes, and the ambient light tube or the cylindrical part of the light-transmitting lampshade is provided with a connector corresponding to the two insertion holes, the connector being inserted into the insertion hole to prevent the inner tube from rotating.

[0013] Furthermore, the upper part of the air duct, the upper part of the inner cylinder, the upper part of the ambient light tube, and the cylindrical part of the light-transmitting lamp cover are all provided with wire-passing hole structures leading to the PCB board.

[0014] Furthermore, a third arc-shaped baffle is provided on the inner wall of the air inlet of the air duct section, and an air inlet filter is provided in the air inlet of the air duct section, and an air inlet end cap is snapped on it. The air inlet end cap presses the air inlet filter tightly onto the third arc-shaped baffle.

[0015] Furthermore, the housing includes a first half-housing and a second half-housing, each of which includes half a handle portion and half a blower portion, and the first half-housing and the second half-housing are snapped together.

[0016] Furthermore, the first half-shell is provided with a plurality of guide holes, and the second half-shell is provided with guide posts corresponding to each guide hole. The mating structure of the guide posts and guide holes is used to align the snap-fit ​​structure of the first half-shell and the second half-shell with each other.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model has an inner cylinder and an air outlet on the air duct section. The inner diameter of the air outlet end near the inner cylinder is exactly the same as the inner diameter of the inner cylinder. Moreover, the inner diameter of the air outlet gradually decreases linearly from the end near the inner cylinder towards the air outlet away from the inner cylinder. This structural design makes the initial air inlet and the final air outlet of this utility model have different apertures, which can make the air pressurized as the channel narrows when it flows through, thereby enhancing the airflow force.

[0019] 2. This utility model is equipped with a storage battery, a PCB board and a bidirectional charging interface, so that this utility model can charge the storage battery by connecting to the bidirectional charging interface through an external charger, and can also power external devices such as mobile phones and smartwatches in outdoor emergencies. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-view perspective;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention when the second half of the shell is removed;

[0023] Figure 4 This is a three-dimensional structural diagram of the present invention when the second half-shell and the components installed on the air duct are removed;

[0024] Figure 5 This is a three-dimensional structural diagram of the second half-shell of this utility model;

[0025] Figure 6This is an exploded view of the components installed on the ventilation duct section of this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the ambient light tube and the light-transmitting lampshade of this utility model.

[0027] In the diagram: 1. Handle; 2. Air duct; 201. First arc-shaped baffle; 202. Second arc-shaped baffle; 203. Limiting baffle; 204. Third arc-shaped baffle; 3. Inner cylinder; 4. Air outlet; 5. Fan; 6. Battery; 7. PCB board; 8. Two-way charging interface; 9. Control switch; 10. Switch button cap; 11. Carabiner; 12. Ambient light tube; 121. Limiting bayonet; 13. Light-transmitting lampshade; 131. Cylindrical part; 132. Arc-shaped cover head; 14. Connecting plate; 15. Insertion hole; 16. Plug; 17. Wiring hole structure; 18. Air inlet filter; 19. Air inlet end cap; 20. First half-shell; 21. Second half-shell; 22. Guide hole; 23. Guide post. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed 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 utility model according to the specific circumstances.

[0029] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0030] like Figure 1 , Figures 3-5As shown, a handheld fan has a main body structure of a shell, which is assembled from a first half-shell 20 and a second half-shell 21. Both the first half-shell 20 and the second half-shell 21 are injection molded parts. Multiple guide holes 22 are integrally formed on the splicing surface of the first half-shell 20, while guide posts 23 corresponding to the guide holes 22 are integrally formed on the splicing surface of the second half-shell 21. The diameter of the guide posts 23 matches the inner diameter of the guide holes 22. During assembly, the guide posts 23 are first inserted into the corresponding guide holes 22. The cooperation between the guide posts 23 and the guide holes 22 positions the first half-shell 20 and the second half-shell 21, aligning the snap-fit ​​structures such as buckles and slots. Pressing then engages the snap-fit ​​structures, completing the assembly of the shell. The first half-shell 20 and the second half-shell 21 each include half a handle portion 1 and half a fan tube portion 2. After assembly, they form a complete shell structure including a complete handle portion 1 and a complete fan tube portion 2. The handle 1 is for the user to hold, and the air duct 2 is the airflow channel.

[0031] like Figure 2 and Figure 3 As shown, an inner cylinder 3 is fixedly installed in the internal cavity of the air duct section 2. An air outlet duct 4 is fixedly connected to the air outlet end of the air duct section 2 by a snap-fit ​​connection. The inner diameter of the air outlet duct 4 near the inner cylinder 3 is exactly the same as the inner diameter of the inner cylinder 3, and the inner diameter of the air outlet duct 4 gradually decreases linearly from the end near the inner cylinder 3 towards the air outlet away from the inner cylinder 3. This structural design allows the air to be pressurized as it flows through the air outlet duct 4 due to the narrowing of the channel, thereby enhancing the airflow force. A fan 5 is installed in the center of the inner cylinder 3. The fan 5 includes a high-speed motor and fan blades mounted on the motor shaft. There is a ventilation channel between the inner wall of the inner cylinder 3 and the high-speed motor. The fan blades of the fan 5 face the air outlet duct 4 and are used to drive the air to flow from the air inlet to the air outlet of the air duct section 2.

[0032] like Figure 1 and Figure 3 As shown, the handle part 1 has an internal cavity containing a battery 6 and a PCB board 7. The PCB board 7 integrates a main control MCU chip, a power management module, a speed control module, a bidirectional charging interface 8, a control switch 9, and other electrical components. The bidirectional charging interface 8 uses a Type-C interface, and a charging port is provided on the side wall of the handle part 1 corresponding to the bidirectional charging interface 8. By providing the bidirectional charging interface 8, this invention can charge the battery 6 via an external charger and also power external devices such as mobile phones and smartwatches in outdoor emergencies. The control switch 9 is a multi-position push-button switch that can start / stop the fan 5 and adjust the three wind speeds. A switch button cap 10 is provided on the handle part 1 corresponding to the control switch 9. The switch button cap 10 is made of soft TPU material, and its bottom abuts against the push-button contact of the control switch 9.

[0033] like Figures 1-3 As shown, a carabiner 11 is provided on the outer side wall of the handle 1 near the bottom. The carabiner 11 and the PCB board 7 are located on the same side of the battery 6, which provides sufficient space for battery installation. By providing the carabiner 11, users can easily attach the fan to their backpack straps or waist belts when hiking or trekking, improving portability.

[0034] like Figure 3 and Figure 7 As shown, an ambient light tube 12 is fixedly installed inside the air duct section 2 between the inner cylinder 3 and the air outlet duct 4. The ambient light tube 12, the inner cylinder 3, and the air outlet duct 4 are arranged along the same central axis, and its inner diameter is the same as that of the inner cylinder 3 to ensure smooth airflow. A light-transmitting lampshade 13 is installed inside the ambient light tube 12. The light-transmitting lampshade 13 is divided into two parts: a cylindrical part 131 and an arc-shaped head 132. The cylindrical part 131 is located inside the ambient light tube 12 and shares the same central axis with it. The outer diameter of the cylindrical part 131 is smaller than the inner diameter of the ambient light tube 12, forming an annular exhaust channel between them, allowing air to flow from the inner cylinder 3 to the air outlet duct 4. Multiple connecting plates 14 are evenly arranged inside the exhaust channel. One end of the connecting plate 14 is connected to the outer wall of the cylindrical part 131, and the other end is connected to the inner wall of the ambient light tube 12, for fixing the light-transmitting lampshade 13 inside the ambient light tube 12. Each connecting plate 14 is evenly spaced along the circumference of the ambient light tube 12, which does not affect air circulation and ensures connection stability. An LED light is installed inside the light-transmitting cover 13. The LED light is electrically connected to the PCB board 7, and the PCB board 7 can be used to start / stop the light and switch colors.

[0035] like Figures 4-7As shown, a first arc-shaped baffle 201 and a second arc-shaped baffle 202 are integrally formed on the inner wall of the ventilation duct section 2. The straight-line distance between the first arc-shaped baffle 201 and the second arc-shaped baffle 202 is equal to the sum of the lengths of the inner cylinder 3 and the ambient light tube 12. After the inner cylinder 3 and the ambient light tube 12 are connected, they are installed between the first arc-shaped baffle 201 and the second arc-shaped baffle 202. Axial positioning is achieved through the two arc-shaped baffles to prevent the inner cylinder 3 and the ambient light tube 12 from sliding inside the ventilation duct section 2. Two limiting baffles 203 are also integrally formed on the inner wall of the ventilation duct section 2. The two limiting baffles 203 are parallel to each other and extend along the length direction of the ventilation duct section 2. The distance between them matches the limiting slot 121 opened on the ambient light tube 12. When the ambient light tube 12 is installed inside the ventilation duct section 2, the two limiting baffles 203 are precisely inserted into the limiting slot 121, thereby restricting the circumferential rotation of the ambient light tube 12. At least two insertion holes 15 are provided at one end of the inner cylinder 3 near the ambient light tube 12. The cylindrical part 131 of the ambient light tube 12 or the light-transmitting lamp cover 13 is provided with a plug 16 corresponding to the insertion holes 15. The shape and size of the plug 16 are adapted to the insertion holes 15. When the inner cylinder 3 is connected to the ambient light tube 12, the plug 16 is inserted into the insertion hole 15 to achieve circumferential positioning of the inner cylinder 3 and prevent the inner cylinder 3 from rotating with the fan 5 when the fan 5 is working.

[0036] like Figure 3 , Figure 6 and Figure 7 As shown, in order to facilitate the wiring of various electrical components, wire-passing hole structures 17 are provided on the side wall of the air duct 2, the end face of the inner cylinder 3, the side wall of the ambient light tube 12, and the end face of the cylindrical part 131 of the light-transmitting lamp cover 13. The positions of these wire-passing hole structures 17 correspond to each other, forming a continuous wire-passing path. The wires can be extended from the PCB board 7 to the fan 5 and the LED light through this path, avoiding messy wires that may affect air circulation or component installation.

[0037] like Figure 1 , Figure 4 and Figure 6 As shown, a third arc-shaped baffle 204 is integrally formed on the inner wall of the air inlet end of the air duct section 2. An air inlet filter 18 is placed in the air inlet of the air duct section 2 to filter impurities in the air and prevent them from entering the inner cylinder 3 and affecting the operation of the fan 5. An air inlet end cap 19 is also connected to the air inlet end of the air duct section 2 by a snap fastener. The inner wall of the air inlet end cap 19 abuts against the edge of the air inlet filter 18, pressing the air inlet filter 18 tightly onto the third arc-shaped baffle 204, thereby fixing the air inlet filter 18.

[0038] In summary, this utility model has an inner cylinder 3 and an outlet cylinder 4 on the duct section 2. The inner diameter of the outlet cylinder 4 near the inner cylinder 3 is exactly the same as the inner diameter of the inner cylinder 3. Furthermore, the inner diameter of the outlet cylinder 4 gradually decreases linearly from the end near the inner cylinder 3 towards the outlet. This structural design results in different apertures at the initial air inlet and the final air outlet, allowing air to be pressurized as the channel narrows, thus enhancing the airflow. This utility model also includes a battery 6, a PCB board 7, and a bidirectional charging interface 8, enabling it to charge the battery 6 via an external charger connected to the bidirectional charging interface 8, and also to power external devices such as mobile phones and smartwatches in outdoor emergencies.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A handheld fan, comprising a housing, characterized in that, The housing includes a handle and a blower section. The blower section contains an inner cylinder, and an air outlet is provided at the air outlet of the blower section. The inner diameter of the air outlet gradually decreases from the end closer to the inner cylinder to the end farther away from the inner cylinder. The inner diameter of the air outlet near the inner cylinder is the same as the inner diameter of the inner cylinder. A fan is provided in the inner cylinder. The handle section contains a battery and a PCB board. The fan and the battery are electrically connected to the PCB board. A bidirectional charging interface is provided on the PCB board, and a charging port is provided on the handle section corresponding to the bidirectional charging interface.

2. A handheld fan according to claim 1, characterized in that, The PCB board is also equipped with a control switch, and the handle is equipped with a switch button cap corresponding to the position of the control switch.

3. A handheld fan according to claim 1, characterized in that, The handle is equipped with a carabiner, and the carabiner and the PCB board are located on the same side of the battery.

4. A handheld fan according to claim 1, characterized in that, An ambient light tube is also provided in the air duct section. The ambient light tube is located between the inner tube and the air outlet tube, and the inner diameter of the ambient light tube is the same as that of the inner tube. A light-transmitting cover is provided in the ambient light tube. The light-transmitting cover includes a cylindrical part and an arc-shaped cover head. The cylindrical part is located in the ambient light tube, and the two are arranged along the same central axis. An exhaust channel is formed between the cylindrical part and the ambient light tube. Multiple connecting plates for connecting the cylindrical part and the ambient light tube are provided in the exhaust channel. Each connecting plate is evenly arranged along the circumference of the ambient light tube. An LED light is provided in the light-transmitting cover, and the LED light is electrically connected to the PCB board.

5. A handheld fan according to claim 4, characterized in that, The inner wall of the duct section is provided with a first arc-shaped baffle and a second arc-shaped baffle in sequence along its circumferential direction. The distance between the first arc-shaped baffle and the second arc-shaped baffle is the sum of the lengths of the inner cylinder and the ambient light tube. The inner cylinder and the ambient light tube are located between the first arc-shaped baffle and the second arc-shaped baffle.

6. A handheld fan according to claim 5, characterized in that, The inner wall of the duct section is also provided with two parallel limiting strips that are spaced a distance apart, and the length direction of the limiting strips is along the length direction of the duct section; the wall of the ambient light tube is provided with a limiting slot, and the two limiting strips are inserted into the limiting slot of the ambient light tube to prevent the ambient light tube from rotating; the inner tube is provided with at least two insertion holes, and the ambient light tube or the cylindrical part of the light-transmitting lampshade is provided with a plug corresponding to the two insertion holes, and the plug is inserted into the insertion hole to prevent the inner tube from rotating.

7. A handheld fan according to claim 6, characterized in that, The upper part of the air duct, the upper part of the inner cylinder, the upper part of the ambient light tube, and the cylindrical part of the light-transmitting lamp cover are all provided with wire-passing holes leading to the PCB board.

8. A handheld fan according to claim 1, characterized in that, A third arc-shaped baffle is provided on the inner wall of the air inlet of the air duct section. An air inlet filter is provided in the air inlet of the air duct section and is snapped with an air inlet end cap. The air inlet end cap presses the air inlet filter onto the third arc-shaped baffle.

9. A handheld fan according to claim 1, characterized in that, The housing includes a first half-housing and a second half-housing, each of which includes a handle portion and a blower portion, and the first half-housing and the second half-housing are snapped together.

10. A handheld fan according to claim 9, characterized in that, The first half-shell is provided with a plurality of guide holes, and the second half-shell is provided with guide posts corresponding to each guide hole. The matching structure of the guide posts and guide holes is used to align the snap-fit ​​structure of the first half-shell and the second half-shell with each other.

Images