Handheld fan with easy cleaning

Abstract

The application belongs to the technical field of fans and relates to a handheld fan convenient to clean. The fan shell has a ventilation opening and an air flow channel communicated with the ventilation opening. A fan assembly is arranged in the air flow channel. A ventilation piece is detachably arranged at the ventilation opening. A detection piece is arranged in the fan shell. The detection piece is in a first state when the ventilation piece is detached from the ventilation opening. A power supply circuit of the fan assembly is disconnected when the detection piece is in the first state. In the application, when the fan assembly needs to be cleaned, the ventilation piece is only needed to be detached from the ventilation opening, the detection piece is in the first state, the power supply circuit of the fan assembly is disconnected, the fan assembly is synchronously stopped, a tool is inserted into the fan shell through the ventilation opening, and the fan assembly can be cleaned. In this way, the fan assembly can be cleaned without being disassembled, and the fan assembly can be ensured to be in a stopped state when the fan assembly is cleaned, so that the fan assembly is convenient to clean.

Description

Technical Field

[0001] This application relates to the field of fan technology, and more specifically, to a handheld fan that is easy to clean. Background Technology

[0002] A handheld fan is a portable, small fan that is typically designed to fit comfortably in the hand for easy carrying. Its main function is to provide users with portable airflow anytime, anywhere to lower the temperature or provide a cooling sensation.

[0003] A handheld fan typically consists of two housings that are set in half and interlocked, a fan assembly, a circuit board, and a battery. The fan assembly, circuit board, and battery are all installed within the space enclosed by the two housings.

[0004] The drawback of the existing technology is that when it is necessary to clean the dust that has accumulated on the fan assembly due to long-term use, the two housings need to be separated first, the fan assembly needs to be removed, and finally the dust on the fan assembly needs to be cleaned with tools. This makes cleaning the fan assembly quite troublesome, so it is urgent to improve it. Utility Model Content

[0005] Therefore, it is necessary to provide a handheld fan that is easy to clean, which addresses the above problems and makes cleaning the fan components convenient.

[0006] The embodiments of this application achieve the above objectives through the following technical solutions.

[0007] This application provides a handheld fan that is easy to clean. The handheld fan includes: a fan housing, a fan assembly, a ventilation component, and a detection component; wherein,

[0008] The fan housing has a vent and an airflow channel communicating with the vent. The fan assembly is located in the airflow channel, and the ventilation component is detachably installed at the vent.

[0009] The detection element is located inside the fan housing. The detection element is in a first state when the ventilation component is removed from the ventilation opening. The power supply circuit of the fan assembly is disconnected when the detection element is in the first state.

[0010] In one embodiment, the detection element is a mechanical switch connected in series in the power supply circuit of the fan assembly. The mechanical switch is closed by pressure when the ventilation component is installed at the vent, and is also opened by release of pressure when the ventilation component is removed from the vent.

[0011] In one embodiment, the mechanical switch includes a switch body and a controlled part. The switch body is connected in series in the power supply circuit of the fan assembly. The controlled part is movably connected to the switch body. The controlled part has a first position where the switch body is turned on by the pressure of the ventilation element and a second position where the switch body is turned off when the pressure of the ventilation element is removed.

[0012] In one embodiment, the controlled part is rotatably connected to the switch body.

[0013] In one embodiment, the controlled part has a force-bearing surface for the ventilation component to press against, and the force-bearing surface is inclined inward in the direction of the ventilation opening pointing towards the airflow channel.

[0014] In one embodiment, the fan assembly includes a drive unit and fan blades, the drive unit being disposed within the airflow channel, and the fan blades being drive-connected to the output end of the drive unit;

[0015] The fan blade is located between the drive member and the ventilation member, or the drive member is located between the fan blade and the ventilation member.

[0016] In one embodiment, the fan blades are located within the airflow channel near the vent.

[0017] In one embodiment, the fan housing further has an installation space and a connection port connecting the installation space and the airflow channel, and the detection element is disposed within the installation space.

[0018] In one embodiment, the ventilation component includes a mounting portion and a ventilation portion. The mounting portion is a cylindrical shape with open ends, and the ventilation portion is located at one open end of the mounting portion. The mounting portion is detachably mounted to the ventilation opening.

[0019] In one embodiment, the outer peripheral wall of the ventilation component is threadedly connected to the inner peripheral wall of the airflow channel near the ventilation opening.

[0020] Compared with the prior art, the embodiments of this application have the following advantages: The present application features a detachable ventilation component installed at the ventilation opening, a detection component located inside the fan housing, a detection component in a first state when the ventilation component is removed from the ventilation opening, and a power supply circuit for the fan assembly disconnected when the detection component is in the first state. When cleaning the fan assembly is required, it is only necessary to remove the ventilation component from the ventilation opening and simultaneously place the detection component in the first state, disconnecting the power supply circuit for the fan assembly, thereby causing the fan assembly to stop operating synchronously. Then, a tool can be inserted into the fan housing through the ventilation opening to clean the fan assembly. This design allows for cleaning of the fan assembly without disassembling the entire fan, and ensures that the fan assembly is in a stopped state during cleaning, making the cleaning of the fan assembly convenient. Attached Figure Description

[0021] To more clearly illustrate the solutions in this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a handheld fan that is easy to clean, according to one embodiment of this application;

[0023] Figure 2 yes Figure 1 A schematic diagram of the ventilation component removed from the ventilation opening;

[0024] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the detection element in one embodiment of this application;

[0026] Figure 5 yes Figure 2 A schematic diagram of the split structure of the central driving component;

[0027] Figure 6 This is a schematic diagram of the structure of the detection component when it is removed from the fan housing in one embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the structure when the detection component is installed on the fan housing in one embodiment of this application.

[0029] Reference numerals: 1000, Handheld fan for easy cleaning; 100, Fan housing; 101, Ventilation opening; 102, Airflow channel; 103, Installation space; 104, Connection port; 105, Protruding structure; 200, Fan assembly; 210, Drive component; 220, Fan blade; 300, Ventilation component; 310, Mounting part; 320, Ventilation part; 400, Detection component; 410, Switch body; 420, Controlled part; 421, Force-bearing surface; 500, Handheld housing. Detailed Implementation

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] This application provides a handheld fan that is easy to clean. It is equipped with a detection device that can be in a first state when the ventilation component is removed from the ventilation port and the power supply circuit of the fan assembly is disconnected when the detection device is in the first state. Simply removing the ventilation component from the ventilation port will cause the fan assembly to stop operating simultaneously. Then, by inserting a tool into the fan housing through the ventilation port, the fan assembly and the inner wall of the fan housing can be cleaned, thus making the cleaning of the fan assembly convenient.

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0034] Please see Figures 1 to 3 This application provides a handheld fan 1000 that is easy to clean. The handheld fan 1000 includes: a fan housing 100, a fan assembly 200, a ventilation component 300, and a detection component 400.

[0035] The fan housing 100 provides mounting positions for the fan assembly 200, ventilation component 300, detection component 400, and other parts. The fan housing 100 can have various shapes, including standard cylindrical, elliptical cylindrical, prismatic, cuboid, and other shapes. Furthermore, the fan housing 100 can be formed in many ways. It can be a single, complete component formed by machining, molding, 3D printing, or other processing methods; it can also be assembled from multiple components, which are fixed together by fastening, bonding, ultrasonic welding, or other methods. Other methods of forming the fan housing 100 are not specifically limited here.

[0036] The fan housing 100 has a vent 101 and an airflow channel 102 connected to the vent 101. The fan assembly 200 is located in the airflow channel 102, and the ventilation component 300 is detachably installed at the vent 101.

[0037] In this embodiment, the airflow channel 102 is arranged in a straight line, with both ends of the airflow channel 102 penetrating to form two ventilation openings 101, one for air intake and the other for air exhaust. Correspondingly, the ventilation component 300 can be one or two. When there is one ventilation component 300, it can be detachably installed at the air intake ventilation opening 101 or at the air exhaust ventilation opening 101. When there are two ventilation components 300, they are detachably installed at the two ventilation openings 101 respectively. The accompanying drawings illustrate a ventilation component 300 detachably installed at the air intake ventilation opening 101. Of course, in other embodiments, the airflow channel 102 can also be arranged in other shapes such as L-shape.

[0038] There are many types of ventilation components 300. A ventilation component 300 can be a ventilation cover with a grid-like ventilation area, a ventilation hood with a grid-like ventilation area, or other types of ventilation structures. No specific limitation is made here.

[0039] The detection element 400 is located inside the fan housing 100. This arrangement ensures that the detection element 400 can only be triggered when it is inserted into the fan housing 100, effectively preventing accidental activation. Specifically, the detection element 400 is in a first state when the ventilation component 300 is removed from the ventilation opening 101, and the power supply circuit of the fan assembly 200 is disconnected when the detection element 400 is in the first state. Of course, the detection element 400 is in a second state when the ventilation component 300 is installed at the ventilation opening 101. Correspondingly, the power supply circuit of the fan assembly 200 can be either turned on when the detection element 400 is in the second state or remain disconnected when the detection element 400 is in the second state. In this case, a main switch that controls the switching between operation and stop of the fan assembly 200 is connected in series in the power supply circuit of the fan assembly 200, and the operation of the fan assembly 200 is controlled by the main switch.

[0040] It should be noted that when the detection element 400 is set as a mechanical switch as described below, the first state of the detection element 400 is the open state of the mechanical switch, and the second state of the detection element 400 is the closed state of the mechanical switch; when the detection element 400 is set as an optical signal transmitter and an optical signal receiver as described below, the first state of the detection element 400 is the state in which the optical signal receiver receives the light emitted by the optical signal transmitter, and the second state of the detection element 400 is the state in which the optical signal receiver does not receive the light emitted by the optical signal transmitter.

[0041] It is worth mentioning that the number of detection components 400 can be set to one or more (at least two). When there are multiple detection components 400, the types of each detection component 400 can be the same or different. For details on the specific types of detection components 400, please refer to the following text.

[0042] There are many ways to detachably install the ventilation component 300 at the ventilation opening 101. In this embodiment, the outer peripheral wall of the ventilation component 300 is threadedly connected to the inner peripheral wall of the airflow channel 102 near the ventilation opening 101. With this configuration, the ventilation component 300 can be installed and removed by turning it in both directions. Furthermore, when the ventilation component 300 is installed at the ventilation opening 101, a portion of the ventilation component 300 is located outside the fan housing 100. This configuration allows for easy removal of the ventilation component 300 by holding the portion of the ventilation component 300 located outside the fan housing 100 and applying a screwing force. In other embodiments, the detachable connection between the ventilation component 300 and the ventilation opening 101 of the fan housing 100 can also be achieved through interference fit, snap-fit ​​connection, magnetic connection, tenon and mortise connection, or other detachable connection methods.

[0043] In addition, the fan assembly 200 and the fan housing 100, as well as the detection component 400 and the fan housing 100, can be either fixedly connected or detachably connected. The fixed connection can be achieved by bonding, ultrasonic welding, or other methods. The detachable connection can be set up in accordance with the detachable installation method of the ventilation component 300 described above, and will not be elaborated on here.

[0044] When cleaning the fan assembly 200, first remove the ventilation component 300 from the vent 101, simultaneously placing the detection component 400 in its first state. This disconnects the power supply circuit to the fan assembly 200, thus stopping its operation as the ventilation component 300 is removed from the vent 101. Then, using a tool inserted through the vent 101 into the fan housing 100, the fan assembly 200 can be cleaned. After cleaning, the ventilation component 300 is reinstalled at the vent 101. In summary, the fan assembly 200 can be cleaned without disassembling the entire fan, and the cleaning process ensures that the fan assembly 200 is in a stopped, static state, making cleaning convenient. Furthermore, since the detection component 400 is located inside the fan housing 100, accidental activation of the detection component 400 is effectively prevented.

[0045] It is understandable that there are many types of detection elements 400. Detection elements 400 can be divided into two main types: physical contact type and non-physical contact type. Among them, physical contact detection elements 400 include, but are not limited to, mechanical switches and pressure sensors, while non-physical contact detection elements 400 include, but are not limited to, photoelectric switches, magnetic induction switches, distance sensors, infrared sensors, etc.

[0046] When the test component 400 is a mechanical switch, please refer to [link / reference]. Figures 1 to 3 In one embodiment of this application, a mechanical switch is connected in series in the power supply circuit of the fan assembly 200. The mechanical switch is closed by being pressed when the ventilation component 300 is installed at the ventilation opening 101, and is also opened when the ventilation component 300 is removed from the ventilation opening 101. With this configuration, the characteristic of the mechanical switch to realize the circuit opening and closing through physical contacts can ensure that the switching of the detection component 400 between the first state and the second state is not affected by the external electromagnetic environment, and the stability is high.

[0047] As an example and not a limitation, there are many types of mechanical switches. A mechanical switch can be a micro switch, a tactile switch, or a roller switch. Accordingly, the roller of the roller switch rotates counterclockwise when the ventilation component 300 is removed from the ventilation opening 101, and rotates clockwise when the ventilation component 300 is installed at the ventilation opening 101, so that the roller switch can switch between the two states of being off and on.

[0048] There are many positions on the ventilation component 300 for pressing against the mechanical switch. In this embodiment, the mechanical switch is pressed against the outer peripheral wall of the ventilation component 300, which ensures that the mechanical switch is subjected to sufficiently strong pressure. In other embodiments, the mechanical switch may also be pressed against the axial end face of the ventilation component 300, or it may be pressed against the inner peripheral wall of the ventilation component 300. In this case, the mechanical switch is suspended in the airflow channel 102 and is located inside the ventilation component 300 when the ventilation component 300 is installed at the ventilation opening 101.

[0049] Specifically, please refer to Figures 2 to 4 The mechanical switch includes a switch body 410 and a controlled part 420. The switch body 410 is connected in series in the power supply circuit of the fan assembly 200. The controlled part 420 is movably connected to the switch body 410. The controlled part 420 has a first position where the switch body 410 is turned on by the pressure of the ventilation member 300, and a second position where the switch body 410 is turned off when the pressure of the ventilation member 300 is removed. The first position of the controlled part 420 is the position when the controlled part 420 is closed to the switch body 410, and the second position of the controlled part 420 is the position when the controlled part 420 is open relative to the switch body 410.

[0050] There are many ways in which the controlled part 420 and the switch body 410 are movably connected. In this embodiment, the controlled part 420 and the switch body 410 are rotatably connected. Specifically, the rotation axis of the controlled part 420 is perpendicular to the extending direction of the airflow channel 102. With this configuration, the controlled part 420 switches between a first position and a second position by rotation when it is subjected to pressure and when the pressure is removed, making it convenient for the controlled part 420 to switch between the first position and the second position. In other embodiments, the controlled part 420 and the switch body 410 may also be slidably connected along a direction perpendicular to the airflow channel 102.

[0051] To facilitate pressing down on the controlled part 420 when the ventilation component 300 is installed at the ventilation opening 101, please refer to... Figures 2 to 4In one embodiment of this application, the controlled part 420 has a force-bearing surface 421 for the ventilation member 300 to press against. The force-bearing surface 421 is inclined inward in the direction from the ventilation opening 101 to the airflow channel 102. With this arrangement, during the process of the ventilation member 300 being installed at the ventilation opening 101, the corner of the ventilation member 300 can gradually press against the controlled part 420 along the force-bearing surface 421, so that the ventilation member 300 switches from the second position to the first position.

[0052] When the detection element 400 is a non-physical contact type, in one embodiment of this application, the detection element 400 includes a light signal transmitter (not shown) and a light signal receiver (not shown) arranged opposite to each other. The light signal transmitter and the light signal receiver are respectively disposed at two positions opposite to each other on the inner peripheral wall of the airflow channel 102. The light signal receiver is used to receive the light signal emitted by the light signal transmitter. The light signal receiver and the light signal transmitter are disconnected when the ventilation element 300 is installed at the ventilation opening 101, and the light signal receiver and the light signal transmitter are connected when the ventilation element 300 is removed from the ventilation opening 101.

[0053] To facilitate cleaning of the fan blades 220 after the ventilation component 300 is removed from the ventilation opening 101, please refer to... Figure 2 , Figure 3 as well as Figure 5 In one embodiment of this application, the fan assembly 200 includes a drive member 210 and a fan blade 220. The drive member 210 is disposed in the airflow channel 102, and the fan blade 220 is throttle-connected to the output end of the drive member 210. The fan blade 220 is located between the drive member 210 and the ventilation member 300. This arrangement allows the fan blade 220 to be exposed after the ventilation member 300 is removed from the ventilation port 101, and then tools can be inserted into the fan housing 100 to facilitate cleaning of the fan blade 220.

[0054] Further, please refer to Figure 2 The fan blade 220 is located inside the airflow channel 102 near the vent 101. This allows the fan blade 220 to be closer to the vent 101, making it easier to reach the fan blade by inserting a tool into the fan housing 100, which is more conducive to cleaning the fan blade 220.

[0055] In another embodiment, the drive member 210 may be located between the fan blade 220 and the ventilation member 300. This allows the drive member 210 to be easily cleaned after the ventilation member 300 is removed from the ventilation port 101. With this arrangement, the fan blade 220 can be exposed after the ventilation member 300 is removed from the ventilation port 101, and then tools can be inserted into the fan housing 100 to facilitate the cleaning of the fan blade 220.

[0056] The aforementioned test component 400 can be installed in many locations; please refer to [link / reference needed]. Figure 2 , Figure 3 as well as Figure 6 In one embodiment of this application, the fan housing 100 also has an installation space 103 and a communication port 104 connecting the installation space 103 and the airflow channel 102. The detection element 400 is disposed in the installation space 103. This arrangement ensures that the installation of the detection element 400 does not occupy the space in the airflow channel 102 and does not interfere with the ventilation of the airflow channel 102.

[0057] In other embodiments, the detection element 400 may also be directly installed on the inner peripheral wall of the airflow channel 102.

[0058] Specifically, please refer to Figure 6 and Figure 7 The installation space 103 is formed by the protrusion 105 provided on the outer peripheral wall of the fan housing 100 and the outer peripheral wall of the fan housing 100. The communication port 104 is formed by penetrating through the corresponding position of the fan housing 100, which makes the formation of the installation space 103 and the communication port 104 convenient.

[0059] Further, please refer to Figure 1 and Figure 7 The easy-to-clean handheld fan 1000 also includes a handheld housing 500, which is connected to the fan housing 100 by a fixed connection or a detachable connection as described in the above embodiments. The protruding structure 105 is located in the space formed by the outer peripheral walls of the handheld housing 500 and the fan housing 100.

[0060] Please see Figure 2 In one embodiment of this application, the ventilation component 300 includes a mounting portion 310 and a ventilation portion 320. The mounting portion 310 is a cylindrical shape with open ends, and the ventilation portion 320 is located at one open end of the mounting portion 310. The mounting portion 310 is detachably mounted at the ventilation opening 101. With this configuration, the mounting portion 310 can stably press against the controlled portion 420 of the detection component 400.

[0061] Specifically, the mounting part 310 and the ventilation part 320 are integrally formed, which can enhance the structural strength of the ventilation component 300.

[0062] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A handheld fan (1000) that is easy to clean, characterized in that, The easy-to-clean handheld fan (1000) includes: a fan housing (100), a fan assembly (200), a ventilation component (300), and a detection component (400); wherein, The fan housing (100) has a vent (101) and an airflow channel (102) communicating with the vent (101). The fan assembly (200) is disposed in the airflow channel (102). The ventilation component (300) is detachably installed at the vent (101). The detection element (400) is disposed inside the fan housing (100). The detection element (400) is in a first state when the ventilation element (300) is removed from the ventilation port (101). The power supply circuit of the fan assembly (200) is disconnected when the detection element (400) is in the first state.

2. The easy-to-clean handheld fan (1000) according to claim 1, characterized in that, The detection element (400) is a mechanical switch connected in series in the power supply circuit of the fan assembly (200). The mechanical switch is closed by being pressed when the ventilation element (300) is installed at the vent (101), and is also opened by being released from pressure when the ventilation element (300) is removed from the vent (101).

3. The easy-to-clean handheld fan (1000) according to claim 2, characterized in that, The mechanical switch includes a switch body (410) and a controlled part (420). The switch body (410) is connected in series in the power supply circuit of the fan assembly (200). The controlled part (420) is movably connected to the switch body (410). The controlled part (420) has a first position where the switch body (410) is turned on by the pressure of the ventilation component (300), and a second position where the switch body (410) is turned off when the pressure of the ventilation component (300) is removed.

4. The easy-to-clean handheld fan (1000) according to claim 3, characterized in that, The controlled part (420) is rotatably connected to the switch body (410).

5. The easy-to-clean handheld fan (1000) according to claim 3, characterized in that, The controlled part (420) has a force-bearing surface (421) for the ventilation component (300) to press against, and the force-bearing surface (421) is inclined inward in the direction from the ventilation opening (101) to the airflow channel (102).

6. The easy-to-clean handheld fan (1000) according to claim 1, characterized in that, The fan assembly (200) includes a drive unit (210) and a fan blade (220). The drive unit (210) is disposed in the airflow channel (102), and the fan blade (220) is throttle-connected to the output end of the drive unit (210). The fan blade (220) is located between the drive member (210) and the ventilation member (300), or the drive member (210) is located between the fan blade (220) and the ventilation member (300).

7. The easy-to-clean handheld fan (1000) according to claim 6, characterized in that, The fan blade (220) is located in the airflow channel (102) near the vent (101).

8. The easy-to-clean handheld fan (1000) according to any one of claims 1 to 7, characterized in that, The fan housing (100) also has an installation space (103) and a communication port (104) connecting the installation space (103) and the airflow channel (102), and the detection element (400) is located in the installation space (103).

9. The easy-to-clean handheld fan (1000) according to any one of claims 1 to 7, characterized in that, The ventilation component (300) includes a mounting part (310) and a ventilation part (320). The mounting part (310) is a cylindrical shape with open ends. The ventilation part (320) is located at one open end of the mounting part (310). The mounting part (310) is detachably mounted at the ventilation opening (101).

10. The easy-to-clean handheld fan (1000) according to any one of claims 1 to 7, characterized in that, The outer peripheral wall of the ventilation component (300) is threadedly connected to the inner peripheral wall of the airflow channel (102) near the ventilation opening (101).

Images