A suction cup type foldable portable fan

Abstract

The utility model discloses a portable fan of sucking disc type can be folded, including sucking disc base, connecting arm and fan head, sucking disc base bottom is equipped with fixed sucking disc, the lower end of connecting arm is rotatably connected with sucking disc base, and the upper end is rotatably connected with fan head. Effect: sucking disc base bottom is equipped with fixed sucking disc, and the application is conveniently fixed to the desktop and wall surface etc. place to facilitate the quick installation and quick use of the application, and the connecting arm is controlled to rotate to the required angle between the lower end and sucking disc base fixed, and to rotate to the required angle between the upper end and fan head fixed, that is, the fan head air outlet angle can be flexibly adjusted, so that the application has strong flexibility and strong use adaptability. When not using the application, the fan head is rotated downward along the upper end of the connecting arm, so that the front end face of the fan head can be rotated to be close to or in contact with the upper end face of the sucking disc base, to realize the overall large amplitude folding of the application, so that the application has storage property when not in use, and does not occupy much space.

Description

Technical Field

[0001] This utility model relates to the field of daily necessities technology, and in particular to a suction cup type foldable portable fan. Background Technology

[0002] Suction cup fans, as the name suggests, are fans that are fixed to a flat surface by adhering to a suction cup. They combine the blowing function of a fan with the convenient fixing characteristics of a suction cup, and have the advantages of easy installation and flexible movement.

[0003] The main structural features of a suction cup fan are: it typically consists of two parts, a fan body and a suction cup, with the fan body fixed to the suction cup. In use, the fan is pressed against the surface to be fixed, squeezing out the air from the suction cup, allowing the fan to firmly adhere to the surface. To move it, the suction cup is manipulated by hand to allow air to enter, detaching the fan from the surface.

[0004] The main advantages of suction cup fans include: no-drill installation, which will not damage fixed surfaces such as walls, making them suitable for renters or users who do not want to damage their decor; flexible installation on various surfaces such as walls, windows, and desktops, with adjustable position and angle to meet different airflow needs; and compact size that saves space and is easy to store and move.

[0005] Applications of suction cup fans include: commonly used in spaces such as kitchens and bathrooms to help remove odors and moisture; also suitable for dormitories and offices for personal use; and can be used in vehicles to provide cooling for drivers and passengers.

[0006] The suction cup fans commonly used generally have the advantage of being easy and quick to install, but they are not easy to fold, making them difficult to store when not in use, and thus not very practical.

[0007] In response, the inventor of this patent, drawing on experience, deeply considered the problems encountered in his work, reviewed a large amount of scientific research data and literature, and gradually conceived and designed this application through a novelty search to solve the relevant technical problems. Summary of the Invention

[0008] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a suction cup-type foldable portable fan.

[0009] To achieve one of the above objectives, a suction cup type foldable portable fan according to an embodiment of the present utility model includes a suction cup base, a connecting arm, and a fan head; The suction cup base has a fixed suction cup at its bottom; the lower end of the connecting arm is rotatably connected to the suction cup base, and the upper end is rotatably connected to the fan head.

[0010] In addition, the suction cup type foldable portable fan according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the bottom surface of the suction cup base is provided with a fixed protrusion facing downwards, and the top center of the fixed suction cup is provided with a slot adapted to flexibly insert / flexibly extrude the fixed protrusion.

[0011] According to one embodiment of the present invention, the suction cup base is provided with a main controller and a rechargeable battery; the fan head is provided with an impeller and a drive motor that drives the impeller to rotate. Both the rechargeable battery and the drive motor are connected to the main controller, and the drive motor is fixedly installed in the fan head facing forward, with the impeller mounted on its front end shaft.

[0012] According to one embodiment of the present invention, a hollow channel is formed inside the connecting arm; the drive motor is connected to the main controller through a power connection wire passing through the hollow channel.

[0013] According to one embodiment of the present utility model, the upper end of the suction cup base is provided with a U-shaped rotating seat, and two damping rotating shafts A are provided laterally opposite on the inner wall of the upper end of the U-shaped rotating seat. At least one of the damping rotating shafts A has a wire hole A that passes through the interior of the suction cup base. The lower end of the connecting arm extends into the U-shaped rotating seat, and two rotating holes A are opened on its side wall to accommodate the insertion of the two damping rotating shafts A. Both rotating holes A are connected to the lower end of the hollow channel.

[0014] According to one embodiment of the present utility model, the upper end of the connecting arm has a notch groove facing downwards, and two damping rotating shafts B are provided in the inner wall of the notch groove in a laterally opposite manner, and at least one of the damping rotating shafts B has a wire hole B that communicates with the hollow channel at its end. The bottom of the fan head is provided with a rotating block that extends into the notch and has two rotating holes B on its side wall that are adapted to be inserted into the two damping rotating shafts B respectively. Both rotating holes B are through the fan head.

[0015] According to one embodiment of the present utility model, both the suction cup base and the fan head are formed into a cylindrical structure. The upper end surface of the suction cup base is provided with the U-shaped rotating seat facing upward, and the fan head is provided with the rotating block at the lower rear part. When the fan head is rotated along the upper end of the connecting arm, the front end face of the fan head can be rotated downwards to be opposite and close to or in contact with the upper end face of the suction cup base, so that the whole is presented as a cylindrical upright.

[0016] According to one embodiment of the present invention, the outer surface of the suction cup base is provided with a charging interface and a power switch; The charging interface is connected to the rechargeable battery through a charging protection circuit connected to the main controller; the power switch is connected to the main controller through a power switch circuit.

[0017] According to one embodiment of the present invention, the outer surface of the suction cup base is further provided with a display screen; A battery power detection circuit is connected between the rechargeable battery and the main controller; the display screen can be used to display the battery power.

[0018] According to one embodiment of the present invention, the fixed suction cup is provided with a lifting loop around its periphery.

[0019] The beneficial effects of this utility model are: Firstly, the suction cup-type foldable portable fan provided in this application, in specific implementation, has a fixed suction cup at the bottom of the suction cup base, making it easy to quickly fix the application to a desktop, wall, or other surface, facilitating quick installation and use. By manipulating the connecting arm, its lower end can be rotated and fixed to the suction cup base at a desired angle, and its upper end can be rotated and fixed to the fan head at a desired angle, thus allowing for flexible adjustment of the airflow angle of the fan head, making the application highly flexible and adaptable to various applications.

[0020] Secondly, when not in use, the fan head can be rotated downward along the upper end of the connecting arm so that the front end of the fan head can be rotated to be close to or in contact with the upper end of the suction cup base, thereby achieving a large degree of folding of the entire application, making the application easy to store when not in use and not taking up much space.

[0021] Thirdly, this application places the main controller and the rechargeable battery inside the suction cup base, which increases the weight of the suction cup base and improves the stability of the suction cup base during installation and use. It also makes the overall weight of the fan head very small, so that it can be easily adjusted to a suitable air outlet angle for use.

[0022] Fourthly, by forming a hollow channel inside the connecting arm, and by connecting the drive motor to the main controller through the power connection wire passing through the hollow channel, the power connection wire can be well hidden and not exposed and is not easily broken by external objects, making the overall structure of this application very beautiful and without too much redundant structure exposed.

[0023] Fifthly, by setting an external power supply for the charging interface, the rechargeable battery can be charged intermittently, ensuring uninterrupted use of this application. By controlling the power switch, the fan head of this application can be turned on and off. By setting the display screen, the rechargeable battery level can be displayed, allowing the user to check the battery level in real time and promptly recharge it when the battery is low, thus ensuring the high reliability of this application.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the suction cup type foldable portable fan of this utility model. Figure 1 ; Figure 2 This is a breakdown of the suction cup type foldable portable fan of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the overall structure of the suction cup type foldable portable fan of this utility model. Figure 2 ; Figure 4 This is a breakdown of the suction cup type foldable portable fan of this utility model. Figure 2 ; Figure 5 This is a longitudinal sectional view of the connecting arm in an embodiment of the present invention; Figure 6 This is a display image of the suction cup type foldable portable fan when it is not in use and is folded up; Figure 7 This is a schematic diagram of the internal circuit of the suction cup type foldable portable fan of this utility model. Figure label: Suction cup type foldable portable fan 1000; Suction cup base 10; Fixed suction cup 101; Card slot 1011; Leaning loop 1012; Fixed protrusion 102; Main controller 103; 104 rechargeable batteries; U-shaped rotating seat 105; Damped rotating shaft A106; Through hole A1061; Charging port 107; Power switch 108; Charging protection circuit 109; Power switch circuit 110; Display screen 111; Battery power detection circuit 112; Connecting arm 20; Hollow Channel 201; A202 drill bit; Notch 203; Damped rotating shaft B204; Cable guide hole B2041; Fan head 30; Impeller 301; Drive motor 302; Rotating block 303; Drill hole B3031; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this 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.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The suction cup type foldable portable fan 1000 of this utility model is described in detail below with reference to the accompanying drawings.

[0033] Reference Figures 1 to 7 As shown, the suction cup type foldable portable fan 1000 provided according to the embodiment of the present utility model includes a suction cup base 10, a connecting arm 20 and a fan head 30. The suction cup base 10 has a fixed suction cup 101 at its bottom; the lower end of the connecting arm 20 is rotatably connected to the suction cup base 10, and the upper end is rotatably connected to the fan head 30.

[0034] When the fan head 30 is rotated downward along the upper end of the connecting arm 20, the front end face of the fan head 30 can be rotated to be close to or in contact with the upper end face of the suction cup base 10.

[0035] Based on the above, it is clear that in specific implementation, this application is mainly used as a suction cup type foldable portable fan 1000.

[0036] Specifically, when applying this application, place it on a desktop or wall, and press the fixing suction cup 101 towards the desktop or wall to expel the air inside. This will attach the fixing suction cup 101 to the desktop or wall, thus fixing the entire application. By manipulating the connecting arm 20, its lower end can be rotated to the desired angle between itself and the suction cup base 10, and its upper end can be rotated to the desired angle between itself and the fan head 30. This allows the air outlet angle of the fan head 30 to be flexibly adjusted.

[0037] Meanwhile, when not using this application, rotating the fan head 30 downward along the upper end of the connecting arm 20 will allow the front end face of the fan head 30 to rotate to be close to or in contact with the upper end face of the suction cup base 10, thereby achieving a larger degree of folding of the entire application and improving its storage capacity.

[0038] Clearly, the use of this application as described above will have the following technical effects: On the one hand, the suction cup base 10 described in this application is provided with a fixed suction cup 101 at the bottom, which makes it easy to quickly fix this application to a desktop or wall, so as to facilitate quick installation and quick use of this application.

[0039] On the other hand, by manipulating the connecting arm 20 to rotate its lower end to the suction cup base 10 to a desired angle and to rotate its upper end to the fan head 30 to a desired angle, the air outlet angle of the fan head 30 can be flexibly adjusted, making the application highly flexible and adaptable.

[0040] Furthermore, in comparison Figure 6 As shown, when this application is not in use, the fan head 30 can be rotated downward along the upper end of the connecting arm 20 so that the front end face of the fan head 30 can be rotated to be close to or in contact with the upper end face of the suction cup base 10, thereby achieving a large degree of folding of the entire application, making the application easy to store when not in use and not taking up much space.

[0041] Furthermore, through the above-mentioned optimized design, the whole constituted by this application is highly practical and has a good effect in use.

[0042] Furthermore, in specific implementation, in accordance with... Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the suction cup base 10 has a fixed protrusion 102 facing downwards on its bottom surface, and the fixed suction cup 101 has a slot 1011 at the top center that is adapted to flexibly insert / flexibly extrude the fixed protrusion 102.

[0043] Thus, when a little force is applied to flexibly insert the fixing protrusion 102 into the slot 1011, the fixing suction cup 101 can be quickly installed. Conversely, when a little force is applied to flexibly push the fixing protrusion 102 out of the slot 1011, the fixing suction cup 101 can be quickly disassembled, so that it can be easily disassembled and replaced when its suction force becomes weak due to compression and deformation.

[0044] Furthermore, in specific implementation, in accordance with... Figure 2 , Figure 4 and Figure 7 As shown, according to one embodiment of the present invention, the suction cup base 10 is provided with a main controller 103 and a rechargeable battery 104; the fan head 30 is provided with an impeller 301 and a drive motor 302 that drives the impeller 301 to rotate. The rechargeable battery 104 and the drive motor 302 are both connected to the main controller 103, and the drive motor 302 is fixedly installed in the fan head 30 facing forward, with the impeller 301 mounted on its front end shaft.

[0045] Therefore, it is clear that this application places the main controller 103 and the rechargeable battery 104 inside the suction cup base 10, which increases the weight of the suction cup base 10, thereby improving the stability of the suction cup base 10 during installation and use. It also makes the overall weight of the fan head 30 very small, so that it can be easily adjusted to a suitable air outlet angle for use.

[0046] Furthermore, in specific implementation, in accordance with Figure 5 As shown, according to one embodiment of the present invention, a hollow channel 201 is formed inside the connecting arm 20; the drive motor 302 is connected to the main controller 103 through a power connection wire passing through the hollow channel 201.

[0047] In this regard, it can be clearly understood that by forming a hollow channel 201 inside the connecting arm 20, and by connecting the drive motor 302 to the main controller 103 through the power connection wire passing through the hollow channel 201, the power connection wire used can be well hidden and not exposed and is not easily broken by external objects, so that the overall structure of this application will be very beautiful and without too much redundant structure exposed.

[0048] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be effectively improved.

[0049] Furthermore, in specific implementation, it is necessary to refer to... Figure 2 , Figure 4 and Figure 5As shown, according to one embodiment of the present utility model, the upper end of the suction cup base 10 is provided with a U-shaped rotating seat 105 facing upward, and two damping rotating shafts A106 are provided in a laterally opposite manner on the inner wall of the upper end of the U-shaped rotating seat 105. At least one of the damping rotating shafts A106 has a wire hole A1061 that passes through to the inside of the suction cup base 10 at its end. The lower end of the connecting arm 20 extends into the U-shaped rotating seat 105, and two rotating holes A202 are opened on its side wall to accommodate the insertion of the two damping rotating shafts A106. Both rotating holes A202 are connected to the lower end of the hollow channel 201.

[0050] Therefore, by inserting the two damping rotating shafts A106 into the two rotating holes A202 respectively, they can form rotational damping between each other. At this time, by rotating the lower end of the connecting arm 20 along the two damping rotating shafts A106, the lower end can be rotated to the required rotation angle and maintained at the corresponding required rotation angle to achieve self-fixation, so that the air outlet angle of the fan head 30 of this application can be flexibly adjusted.

[0051] Furthermore, since at least one of the damping rotating shafts A106 has a wire-passing hole A1061 extending into the interior of the suction cup base 10, and both of the rotating holes A202 are connected to the lower end of the hollow channel 201, the lower end of the power connection cable to be used can pass through the wire-passing hole A1061 from inside the suction cup base 10 and enter the hollow channel 201 through one or both of the rotating holes A202. This ensures that the lower part of the power connection cable to be used is not exposed between the lower end of the connecting arm 20 and the suction cup base 10, thereby achieving a concealed layout of the power connection cable from the lower end of the connecting arm 20 to the interior of the suction cup base 10.

[0052] Furthermore, in this technical solution, we continue to compare... Figure 2 , Figure 4 and Figure 5 As shown, according to one embodiment of the present utility model, the upper end of the connecting arm 20 is provided with a notch 203 facing downward, and two damping rotating shafts B204 are provided in the inner wall of the notch 203 in a transverse direction. At least one of the damping rotating shafts B204 has a wire hole B2041 at its end that communicates with the hollow channel 201. The fan head 30 has a rotating block 303 at the bottom, which extends into the notch 203. The rotating block 303 has two rotating holes B3031 on its side wall that are adapted to the insertion of the two damping rotating shafts B204. Both rotating holes B3031 extend into the fan head 30.

[0053] Therefore, by inserting the two damping rotating shafts B204 into the two rotating holes B3031 respectively, they can form rotational damping with each other. At this time, by rotating the rotating block 303 provided at the bottom of the fan head 30 along the two damping rotating shafts B204, the bottom of the fan head 30 can be rotated to the required rotation angle and maintained at the corresponding required rotation angle to achieve self-fixation, so that the air outlet angle of the fan head 30 of this application can be further flexibly adjusted.

[0054] Furthermore, since at least one of the damping rotating shafts B204 has a wire-passing hole B2041 at its end that connects to the hollow channel 201, and both of the rotating holes B3031 extend into the fan head 30, the upper end of the power connection cable to be used can pass through the wire-passing hole B2041 and enter the fan head 30 through one or both of the rotating holes B3031. This ensures that the upper end of the power connection cable to be used is not exposed between the upper end of the connecting arm 20 and the rotating block 303, thereby achieving a concealed arrangement of the power connection cable from the upper end of the connecting arm 20 to the inside of the fan head 30.

[0055] Furthermore, through the above-mentioned optimized design, the overall performance of this application can be further improved.

[0056] Preferably, in this technical solution, compared with Figure 1 , Figure 3 and Figure 6 As shown, according to one embodiment of the present utility model, the suction cup base 10 and the fan head 30 are both formed into a cylindrical structure. The upper end surface of the suction cup base 10 is provided with the U-shaped rotating seat 105 facing upward, and the fan head 30 is provided with the rotating block 303 at the lower rear part. When the fan head 30 is rotated along the upper end of the connecting arm 20, the front end face of the fan head 30 can be rotated downwards to be opposite and close to or attached to the upper end face of the suction cup base 10, so that the whole is cylindrical and upright.

[0057] Therefore, it is clear that when both the suction cup base 10 and the fan head 30 are preferably formed into a cylindrical structure, the overall structure of this application is indeed very aesthetically pleasing. Furthermore, with the U-shaped rotating seat 105 located at the periphery of the upper surface of the suction cup base 10 and the rotating block 303 located at the lower rear of the fan head 30, rotating the fan head 30 along the upper end of the connecting arm 20 allows the front end of the fan head 30 to rotate downwards until it is directly opposite and close to or fits against the upper surface of the suction cup base 10, thus forming a cylindrical and upright shape. In this way, even when this application is not in use, rotating the fan head 30 downwards along the upper end of the connecting arm 20 allows the front end of the fan head 30 to rotate until it is close to or fits against the upper surface of the suction cup base 10, effectively achieving a significant degree of folding and storage when not in use, thus minimizing space occupation.

[0058] When the front end face of the fan head 30 is rotated downwards to be opposite and close to or attached to the upper end face of the suction cup base 10, so that the whole is formed into a cylindrical shape and stands upright on a table or other place, the whole constituted by this application can also be used as a decorative item.

[0059] It should be added that, in specific implementation, comparison should be made with... Figure 2 , Figure 4 and Figure 7 As shown, according to one embodiment of the present invention, the outer surface of the suction cup base 10 is provided with a charging interface 107 and a power switch 108. The charging interface 107 is connected to the rechargeable battery 104 via a charging protection circuit 109 connected to the main controller 103; the power switch 108 is connected to the main controller 103 via a power switch circuit 110.

[0060] Therefore, by setting the charging interface 107 to be connected to an external power source, the rechargeable battery 104 can be charged intermittently, so that the application can be used uninterruptedly. By operating the power switch 108, the fan head 30 of the application can be turned on and off.

[0061] Furthermore, it is necessary to add that, in specific implementation, comparison should be made with... Figure 2 and Figure 7 As shown, according to one embodiment of the present invention, the outer surface of the suction cup base 10 is further provided with a display screen 111; A battery power detection circuit 112 is connected between the rechargeable battery 104 and the main controller 103; the display screen 111 can be used to display the power of the rechargeable battery 104.

[0062] Therefore, by setting the display screen 111, the power level of the rechargeable battery 104 can be displayed, so that the user can check the power level of the rechargeable battery 104 in real time, so that when the power is low, it can be detected in time and charged in time, which makes the application reliable. In addition, the display screen 111 can also be used to display the power and speed of the drive motor 302, making the application more intuitive to use.

[0063] Furthermore, in this technical solution, compared with Figure 1 , Figure 3 and Figure 6 As shown, according to one embodiment of the present invention, the fixed suction cup 101 is provided with a lifting loop 1012 around its periphery.

[0064] Therefore, the user can lift the fixed suction cup 101 by holding the lifting loop 1012 with a little force, so that external air can enter the fixed suction cup 101, so as to facilitate the disassembly of the fixed suction cup 101 and make the disassembly of this application easier.

[0065] Other embodiments, etc., will not be described here.

[0066] In summary, the suction cup-type foldable portable fan 1000 provided in this application, in specific implementation, has a fixed suction cup 101 at the bottom of the suction cup base 10, which facilitates quick fixation of the application to desktops, walls, etc., for convenient installation and use. By manipulating the connecting arm 20 to rotate its lower end to the suction cup base 10 and fix it at the desired angle, and to rotate its upper end to the fan head 30 and fix it at the desired angle, the air outlet angle of the fan head 30 can be flexibly adjusted, making the application highly flexible and adaptable to use.

[0067] Furthermore, when this application is not in use, the fan head 30 can be rotated downward along the upper end of the connecting arm 20 so that the front end face of the fan head 30 can be rotated to be close to or in contact with the upper end face of the suction cup base 10, thereby achieving a large degree of folding of the entire application, making the application easy to store when not in use and not taking up much space.

[0068] Furthermore, this application places the main controller 103 and the rechargeable battery 104 inside the suction cup base 10, thereby increasing the weight of the suction cup base 10 to improve the stability of the suction cup base 10 during installation and use. It also makes the overall weight of the fan head 30 very small, so that it can be easily adjusted to a suitable air outlet angle for use.

[0069] Furthermore, by forming a hollow channel 201 inside the connecting arm 20, and by connecting the drive motor 302 to the main controller 103 through the power connection wire passing through the hollow channel 201, the power connection wire used can be well hidden and not exposed and is not easily broken by external objects, making the overall structure of this application very beautiful and without too much redundant structure exposed.

[0070] Furthermore, by connecting an external power source to the charging interface 107, the rechargeable battery 104 can be charged intermittently, ensuring uninterrupted use of this application. By controlling the power switch 108, the fan head 30 can be turned on and off. The display screen 111 can display the charge level of the rechargeable battery 104, allowing users to check the charge level in real time and promptly recharge it when the charge is low, thus ensuring the reliability of this application.

[0071] Furthermore, the suction cup foldable portable fan 1000 provided in this application is indeed highly practical and has excellent performance, which makes this application inherently valuable for market promotion and will certainly be very popular and effectively popularized.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A suction cup type foldable portable fan, characterized in that, Includes suction cup base, connecting arm and fan head; The suction cup base has a fixed suction cup at the bottom; the lower end of the connecting arm is rotatably connected to the suction cup base, and the upper end is rotatably connected to the fan head. The suction cup base contains a main controller and a rechargeable battery; the fan head contains an impeller and a drive motor that rotates the impeller. The rechargeable battery and the drive motor are both connected to the main controller, and the drive motor is fixed in the fan head facing forward, with an impeller sleeved on its front shaft. A hollow channel is formed inside the connecting arm; the drive motor is connected to the main controller through the power connection line running through the hollow channel.

2. The suction cup type foldable portable fan according to claim 1, characterized in that, The bottom surface of the suction cup base is provided with a fixing protrusion facing downwards, and the top center of the fixed suction cup is provided with a slot that can be flexibly inserted / flexibly extruded to fit the fixing protrusion.

3. The suction cup type foldable portable fan according to claim 1, characterized in that, The upper end of the suction cup base is provided with a U-shaped rotating seat, and two damping rotating shafts A are provided on the inner wall of the upper end of the U-shaped rotating seat in a horizontally opposite manner. At least one damping rotating shaft A has a wire hole A that passes through to the inside of the suction cup base. The lower end of the connecting arm extends into the U-shaped rotating seat, and two rotating holes A are opened on its side wall to accommodate the insertion of the two damping rotating shafts A. Both rotating holes A are connected to the lower end of the hollow channel.

4. The suction cup type foldable portable fan according to claim 3, characterized in that, The upper end of the connecting arm has a notch groove facing downwards, and two damping rotating shafts B are provided on the inner wall of the notch groove in a laterally opposite manner. At least one damping rotating shaft B has a wire hole B at its end that connects to the hollow channel. The bottom of the fan head has a downward-facing rotating block that extends into the notch. On its side wall, there are two rotating holes B that are adapted to accommodate the insertion of two damping rotating shafts B. Both rotating holes B extend into the fan head.

5. The suction cup type foldable portable fan according to claim 4, characterized in that, Both the suction cup base and the fan head are formed into a cylindrical structure. The upper edge of the suction cup base is provided with a U-shaped rotating seat, and the lower rear part of the fan head is provided with a rotating block. When the fan head is rotated along the upper end of the connecting arm, the front end face of the fan head can be rotated downwards until it is facing and close to or in contact with the upper end face of the suction cup base, so that the whole structure presents a cylindrical upright shape.

6. The suction cup type foldable portable fan according to claim 1, characterized in that, The suction cup base has a charging port and a power switch on its outer surface; The charging interface is connected to the rechargeable battery via a charging protection circuit connected to the main controller; the power switch is connected to the main controller via a power switch circuit.

7. The suction cup type foldable portable fan according to claim 6, characterized in that, The suction cup base also has a display screen on its outer surface; A battery power detection circuit is connected between the rechargeable battery and the main controller; the display screen can be used to show the rechargeable battery power.

8. The suction cup type foldable portable fan according to any one of claims 1-7, characterized in that, The suction cup is equipped with a lifting loop around its perimeter.

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