Portable fan

Abstract

The utility model discloses a portable fan which comprises the following components: an air supply part which comprises an air duct and at least one fan which is arranged in the air duct, the fan is in driving connection with a motor, and the bottom of the air duct is provided with a plugging assembly which extends downwards; at least two connecting parts used for containing the plug-in assemblies are arranged on the handheld part, a battery and a circuit board electrically connected with the battery are further arranged in the handheld part, and the circuit board is electrically connected with the fan through the connecting parts and the plug-in assemblies. Through the arrangement of the multiple connecting parts, the connecting position of the air supply part on the handheld part can be changed, then the air supply requirements of various scenes are met, the length can be reduced, carrying is more convenient, the requirement that air needs to be linearly supplied along the handheld part in a specific scene can be met, and more convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the field of consumer electronics, and in particular to a portable fan. Background Technology

[0002] Currently, with the widespread use of handheld fans, more and more consumers are choosing them as a daily tool for cooling off. To improve the battery life of these handheld fans, some have proposed a separate design for the air delivery unit and the handheld unit. For example, PCT patent publication number WO2024131243 and its related patents include: an air delivery unit and a handheld unit, the handheld unit having a first connecting member, the air delivery unit having two connecting members, the air delivery unit and the handheld unit being connected by a fixing member, the fixing member passing through the first connecting member and the second connecting member to connect the air delivery unit and the handheld unit, a portion of the handheld unit being embedded within the air delivery unit and / or a portion of the air delivery unit being embedded within the handheld unit. This portable handheld fan allows for replacement of the handheld unit if it malfunctions or its battery is depleted. This method significantly improves the fan's battery life, but it also has certain drawbacks, such as: the connection between the air delivery unit and the handheld unit is relatively complex, making connection failures possible; and the availability of only one connection and fixing method is not conducive to storage and portability.

[0003] Therefore, how to develop a more convenient portable fan has become a technical problem that the industry urgently needs to solve. Utility Model Content

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a more convenient portable fan.

[0005] Technical solution: A portable fan, comprising:

[0006] An air supply unit includes an air duct and at least one fan disposed inside the air duct, the fan being driven by a motor, and the bottom of the air duct having a downwardly extending plug-in assembly.

[0007] The handheld part has at least two connection parts for accommodating the plug-in assembly. The handheld part also has a battery and a circuit board electrically connected to the battery. The circuit board is electrically connected to the fan through the connection parts and the plug-in assembly. The handheld part also has a discharge port electrically connected to the circuit board for charging external devices.

[0008] Furthermore, the connecting portion is configured to be located at least at the top of the handgrip and on the side of the handgrip.

[0009] Furthermore, the plug-in assembly includes a recessed portion and a plug-in member disposed in the middle of the recessed portion. The plug-in member is electrically connected to the motor, and guide posts are respectively provided at both ends of the recessed portion.

[0010] Furthermore, the connecting portion includes a protrusion for fitting into the recessed portion, the protrusion having a insertion hole in the middle for accommodating the connector, and guide holes at both ends of the protrusion for accommodating the guide post, the insertion hole being disposed on the circuit board.

[0011] Furthermore, the plug-in assembly and the connecting portion are respectively provided with a first magnetic body and a second magnetic body that are magnetically attracted to each other.

[0012] Furthermore, the at least one fan is configured to include a first fan and a second fan connected in sequence, wherein the blade spacing of the first fan is smaller than the blade spacing of the second fan.

[0013] Furthermore, the blade angle of the second fan is more gradual than that of the first fan.

[0014] Furthermore, the front end of the air duct is provided with an air outlet, and the air outlet is configured such that its inner diameter gradually decreases along the air outlet direction.

[0015] Furthermore, hooks are provided on both sides of the handheld part, and an LED lighting module electrically connected to the circuit board is also provided on the handheld part.

[0016] Furthermore, it also includes a spare battery that can be placed in the spare battery compartment.

[0017] Furthermore, it also includes a carrying sleeve for mounting the handpiece, the top opening of the carrying sleeve for accommodating the handpiece, and a recessed position on one side of the top for avoiding the air supply part, and a back clip on at least one side of the carrying sleeve.

[0018] Beneficial effects: This portable fan, by setting multiple connecting parts, can change the connection position of the air delivery part on the handheld part, thus adapting to the air delivery needs of various scenarios. It can not only reduce the length for easier carrying, but also meet the need for linear air delivery along the handheld part in specific scenarios, making it more convenient. Attached Figure Description

[0019] Appendix Figure 1 This is a three-dimensional structural diagram of one embodiment of the portable fan of this utility model;

[0020] Appendix Figure 2 For the appendix Figure 1 A cross-sectional view of the portable fan shown.

[0021] Appendix Figure 3 for Figure 1 The diagram shows an explosion of a portable fan.

[0022] Appendix Figure 4 for Figure 1 An exploded view of another assembly method for the portable fan shown.

[0023] Appendix Figure 5 for Figure 1 A schematic diagram of an explosion of the air supply section of a portable fan;

[0024] Appendix Figure 6 for Figure 1 An exploded view of a portable fan with a carrying case shown.

[0025] Appendix Figure 7 for Figure 6 An exploded view of another assembly method of the portable fan and carrying case shown. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0028] See Figures 1 to 5 The portable fan of this utility model shown in the figure includes an air delivery section 2 and a handheld section 1. The air delivery section 2 includes a blower 20 and at least one fan disposed within the blower 20. The fan is driven by a motor, and the bottom of the blower 20 is provided with a downwardly extending plug-in assembly 4.

[0029] The handheld part 1 is provided with at least two connecting parts 3 for accommodating the plug-in component 4. The handheld part 1 also contains a battery 11 and a circuit board 12 electrically connected to the battery 11. The circuit board 12 is electrically connected to the fan via the connecting parts 3 and the plug-in component 4. The handheld part 1 is also provided with a discharge port 14 electrically connected to the circuit board 12 and used to charge external devices, allowing the handheld part 1 to be used as a power bank. Specifically, the discharge port 14 is a USB port located at the top of the handheld part 1. It can also be a Type-C port or other existing ports located on the side or bottom of the handheld part 1; such structural variations still fall within the protection scope of this utility model.

[0030] By setting multiple connecting parts 3, the connection position of the air supply part 2 on the handheld part 1 can be changed, thereby adapting to the air supply needs of various scenarios. Not only can the length be reduced to make it more convenient to carry, but it can also meet the need for linear air supply along the handheld part 1 in specific scenarios, making it more convenient.

[0031] The connecting portion 3 is configured to be located at least at the top of the handheld portion 1 and on the side of the handheld portion 1. When airflow perpendicular to the direction of airflow from the handheld portion 1 is required, the plug-in component 4 is inserted along the connecting portion 3 at the top of the handheld portion 1; when airflow parallel to the direction of airflow from the handheld portion 1 is required, the plug-in component 4 is inserted along the connecting portion 3 on the side of the handheld portion 1.

[0032] Specifically, the plug-in assembly 4 includes a recessed portion 41 and a plug-in member 42 disposed in the middle of the recessed portion 41. The plug-in member 42 is electrically connected to the motor, and guide posts 43 are respectively provided at both ends of the recessed portion 41. The circuit board 12 and the motor are electrically connected through the plug-in member 42, while the guide posts 43 and the recessed portion 41 work together to provide a positioning function.

[0033] The connecting part 3 includes a protrusion 31 for fitting into the recess 41. The protrusion 31 has a central insertion hole 33 for accommodating the connector 42. Both ends of the protrusion 31 also have guide holes 32 for accommodating the guide post 43. The insertion holes 33 are located on the circuit board 12. During the assembly of the air supply part 2 and the handheld part 1, ensuring that the guide holes 32 mate with the guide post 43 and that the recess 41 mates with the protrusion 31 easily achieves positioning, ensuring that the connector 42 can smoothly enter the insertion hole 33 to form a stable connection.

[0034] In some preferred embodiments, the plug-in assembly 4 and the connecting part 3 are respectively provided with a first magnetic body (not shown in the figure) and a second magnetic body (not shown in the figure) that attract each other. In this way, the magnetic attraction between the first magnetic body and the second magnetic body ensures a stable connection between the plug-in assembly 4 and the connecting part 3, while not affecting disassembly.

[0035] In some preferred embodiments, the at least one fan is configured to include a first fan 21 and a second fan 22 connected in sequence, wherein the blade spacing of the first fan 21 is smaller than that of the second fan 22. Thus, the second fan 22 is responsible for initially introducing and accelerating external air, while the first fan 21 performs secondary compression and directional airflow. Furthermore, the blade angle of the second fan 22 is more gradual than that of the first fan 21. The gentler blade angle of the second fan 22 is used to capture air over a wider area; the steeper blade angle of the first fan 21 concentrates the airflow and discharges it at high speed, achieving a "wind-gathering effect." Compared to a single-layer blade, the two-layer structure can increase wind power by approximately 30%-50%, especially noticeable on small handheld devices. Moreover, it reduces airflow loss. When a single-layer blade rotates, eddies and turbulence easily form at the blade edges, leading to energy waste. With the two-layer blades arranged in a staggered or gap-filled manner, the blades of the second fan 22 initially regulate the airflow direction, while the blades of the first fan 21 further smooth the airflow, reducing turbulence losses and making wind energy utilization more efficient.

[0036] In some preferred embodiments, the front end of the air duct 20 is provided with an air outlet 23, which is configured such that its inner diameter gradually decreases along the air outlet direction, thereby concentrating the airflow and increasing the air outlet rate. Hooks 13 are also provided on both sides of the handheld part 1 for securing the handheld part when it is inconvenient for the user to hold it. The handheld part 1 is also provided with an LED lighting module 15 electrically connected to the circuit board, allowing the handheld part 1 to be used as a flashlight.

[0037] In some preferred embodiments, a carrying sleeve 5 is also included for mounting the handheld part 1, thereby protecting the portable fan and facilitating carrying. The carrying sleeve 5 has an opening at the top to accommodate the handheld part, and a recess 51 on one side of the top to avoid the air supply part. Both sides of the carrying sleeve 5 are provided with back clips 52, which can be hung on clothing or a backpack for greater convenience.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A portable fan, comprising: An air supply unit includes an air duct and at least one fan disposed inside the air duct, the fan being driven by a motor, and the bottom of the air duct having a downwardly extending plug-in assembly. The handheld part has at least two connection parts for accommodating the plug-in assembly. The handheld part also has a battery and a circuit board electrically connected to the battery. The circuit board is electrically connected to the fan through the connection parts and the plug-in assembly. The handheld part also has a discharge port electrically connected to the circuit board for charging external devices.

2. The portable fan according to claim 1, characterized in that: The connecting portion is configured to be located at least at the top of the handheld portion and on the side of the handheld portion.

3. The portable fan according to claim 2, characterized in that: The plug-in assembly includes a recessed portion and a plug-in component disposed in the middle of the recessed portion. The plug-in component is electrically connected to the motor, and guide posts are respectively provided at both ends of the recessed portion.

4. The portable fan according to claim 3, characterized in that: The connecting portion includes a protrusion for fitting into the recessed portion, the protrusion having a socket hole in the middle for accommodating the connector, and guide holes at both ends of the protrusion for accommodating the guide post. The socket hole is located on the circuit board.

5. The portable fan according to claim 4, characterized in that: The plug-in assembly and the connecting part are respectively provided with a first magnetic body and a second magnetic body that attract each other magnetically.

6. The portable fan according to claim 1, characterized in that: The at least one fan is configured to include a first fan and a second fan connected in sequence, wherein the blade spacing of the first fan is smaller than the blade spacing of the second fan.

7. The portable fan according to claim 6, characterized in that: The blade angle of the second fan is gentler than that of the first fan.

8. The portable fan according to claim 6, characterized in that: The front end of the air duct is provided with an air outlet, and the air outlet is configured such that its inner diameter gradually decreases along the air outlet direction.

9. The portable fan according to claim 1, characterized in that: The handheld part is also provided with hooks on both sides, and the handheld part is also provided with an LED lighting module that is electrically connected to the circuit board.

10. The portable fan according to claim 1, characterized in that: It also includes a carrying case for mounting the handpiece, the top opening of the carrying case for accommodating the handpiece, and a recessed position on one side of the top for avoiding the air supply part, and a back clip on at least one side of the carrying case.

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