Fan module and modular electric fan

Abstract

The utility model discloses a fan module and a modularized electric fan, the fan module comprises a supporting seat, a fan blade assembly, a conductive assembly and a magnetic attraction external connection assembly, the conductive assembly and the magnetic attraction external connection assembly are distributed on the same surface of the supporting seat, and the magnetic attraction external connection assembly is distributed on the periphery of the conductive assembly in a surrounding mode; the exposed part of the conductive assembly is used for being electrically connected with the control module so that electric energy and / or control signals can be transmitted between the fan module and the control module. The exposed part of the magnetic attraction external connection assembly is used for being connected with the control module in a magnetic attraction mode, and the fan module is detachably connected with the control module in an angle-adjustable mode through the magnetic attraction external connection assembly. The fan module is connected with the control module in an angle-adjustable mode through the magnetic attraction external connection assembly, the problem that the relative included angle between the fan blade part and the control base part of an existing split type electric fan cannot be adjusted is solved, and the flexibility of the split type electric fan is improved while the stability of electric connection is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and in particular to a fan module and a modular electric fan. Background Art

[0002] An electric fan is a household appliance that uses electric drive to rotate the fan blades to accelerate the circulation of air. It is mainly used for cooling and ventilating air. An electric fan mainly consists of a fan head (blades, blade guards and motors), a control device and a fan base. The fan head, the control device and the fan base are usually fixedly connected by a connecting rod to form a whole, which is not easy to disassemble and is not convenient to store. Existing split electric fans are generally divided into two parts, one part is the fan blade part, and the other part is the control base part. For this type of split electric fan, although the connection between the fan blade part and the control base part is detachable, after the two are connected, the fan blade part is relatively fixed to a certain fixed angle of the control base part, that is, the relative angle between the fan blade part and the control base part is not adjustable. Utility Model Content

[0003] In response to the problems raised by the background technology, the purpose of the present utility model is to propose a fan module and a modular electric fan, which solves the problem that the relative angle between the blade part and the control base part of the existing split electric fan is not adjustable, thereby improving the flexibility of the split electric fan while ensuring the stability of the electrical connection.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A fan module comprises a support base, a fan blade assembly, a conductive assembly and a magnetic external assembly, wherein the fan blade assembly is connected to the support base via a support rod;

[0006] The conductive component and the magnetic external component are respectively installed on the support base, the conductive component and the magnetic external component are distributed on the same surface of the support base, and the magnetic external component is distributed around the outer periphery of the conductive component, and the conductive component and the magnetic external component are partially exposed on the outer wall of the support base; the exposed part of the conductive component is used to be electrically connected to the control module, so as to transmit electric energy and / or control signals between the fan module and the control module;

[0007] The exposed portion of the magnetic external connection component is used for magnetic connection with the control module, and the fan module is detachably connected to the control module with an adjustable angle through the magnetic external connection component.

[0008] Preferably, the conductive component and the magnetic external component are respectively installed on the bottom surface of the support base; the magnetic external component is an annular magnetic sheet, or is composed of a plurality of concentrically distributed annular magnetic sheets, and the conductive component is located in the center area of ​​the annular magnetic sheet.

[0009] Preferably, the conductive component and the magnetic external component are respectively installed on the bottom surface of the support base; the magnetic external component is a combination of a plurality of magnetic sheets, and the plurality of magnetic sheets are distributed around the conductive component at equal intervals.

[0010] Preferably, the bottom surface of the support base is provided with an inwardly concave installation groove, the magnetic external connection component is installed in the installation groove, and the top surface of the magnetic external connection component is flush with the surface of the support base.

[0011] Preferably, the conductive component is at least one of a conductive elastic needle, a conductive spring, a conductive contact, a conductive plug and a conductive metal base.

[0012] Preferably, the bottom surface of the support seat is provided with an inwardly concave through groove, the conductive component is a conductive metal base surface, the conductive metal base surface is fixedly installed in the through groove, and the top surface of the conductive metal base surface is flush with the surface of the support seat.

[0013] Preferably, the support seat is a square structure; the fan blade assembly includes a fan blade, a fan blade protective cover and a motor, the fan blade is rotatably installed in the fan blade protective cover, the motor is electrically connected to the conductive component, and the motor is used to receive a signal from the control module and to drive the rotation of the fan blade;

[0014] The conductive component and the magnetic external component are respectively exposed on the bottom surface of the support base, and the bottom surface of the support base is provided with a plurality of inwardly concave mounting grooves, the mounting grooves are circular slots, and the plurality of mounting grooves are equally spaced and distributed around the conductive component as the center;

[0015] The magnetic external component is a magnetic mounting structure, which is a combination of a plurality of circular magnetic sheets, the circular magnetic sheets are adapted to the size of the circular slots, the circular magnetic sheets are respectively fixedly mounted in the circular slots, and the top of the circular magnetic sheets is flush with the surface of the support seat;

[0016] The conductive component is a conductive copper base, the conductive copper base is in an inner circle and outer ring structure, and the conductive copper base is directly opposite to the conductive part of the control module to achieve electrical connection.

[0017] Correspondingly, the utility model provides a modular electric fan, comprising the above-mentioned fan module, a control module and a power module, wherein the control module and the power module are respectively provided with a connecting portion and a conductive portion; the fan module is detachably connected to the connecting portion of the control module, and the fan module is electrically connected to the control module through the conductive component and the conductive portion of the control module, and the fan module is detachably connected to the control module through the magnetic external component with an adjustable angle;

[0018] The connecting portion of the power module is detachably connected to another connecting portion of the control module, and the conductive portion of the power module is electrically connected to another conductive portion of the control module.

[0019] Preferably, the power module comprises a housing, a battery, a USB interface, a conductive elastic connection terminal and a combination component, the battery is installed inside the housing, the USB interface is exposed on the outer wall of the housing, and the battery is charged through the USB interface;

[0020] The conductive elastic connection end and the combination component are exposed on the surface of the accommodating shell, and the combination component is used to removably install the control module; the conductive elastic connection end is partially exposed on the outer wall of the accommodating shell, and the exposed part of the conductive elastic connection end is used to be electrically connected to the control module.

[0021] Preferably, the combination component is installed on the top surface of the accommodating shell, and the top surface of the accommodating shell is provided with an inwardly concave installation groove. The combination component is a magnetic mounting structure, and the magnetic mounting structure is fixedly installed in the mounting groove, and the top of the magnetic mounting structure is flush with the surface of the accommodating shell.

[0022] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0023] The fan module proposed in the utility model is connected to the control module in an angle-adjustable manner through the magnetic external component, thereby solving the problem that the relative angle between the fan blade part and the control base part of the existing split electric fan is not adjustable, and improving the flexibility of the split electric fan while ensuring the stability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 The utility model is a schematic structural diagram of a modular electric fan according to an embodiment of the present invention.

[0026] Figure 3 is a top view of a power module in one embodiment;

[0027] Figure 4 yes Figure 3 Bottom view of the power module.

[0028] Among them: fan module 1, support base 11, fan blade assembly 12, fan blade protection cover 13, conductive assembly 14, magnetic external assembly 15, control module 2, power module 3, accommodating shell 31, USB interface 32, conductive elastic connecting end 33, and combined assembly 34. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

[0032] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] The following is combined with Figures 1 to 4 The technical solution of the utility model is further illustrated by specific implementation methods.

[0034] A fan module, such as Figure 1 and Figure 2As shown, it includes a support base 11, a fan blade assembly 12, a conductive assembly 14 and a magnetic external assembly 15, and the fan blade assembly 12 is connected to the support base 11 through a support rod;

[0035] The conductive component 14 and the magnetic external component 15 are respectively installed on the support base 11, and the conductive component 14 and the magnetic external component 15 are distributed on the same surface of the support base 11, and the magnetic external component 15 is distributed around the outer periphery of the conductive component 14, and the conductive component 14 and the magnetic external component 15 are partially exposed on the outer wall of the support base 11; the exposed part of the conductive component 14 is used to be electrically connected to the control module 2, so as to transmit electric energy and / or control signals between the fan module 1 and the control module 2;

[0036] The exposed portion of the magnetic external connection component 15 is used for magnetic connection with the control module, and the fan module is detachably connected to the control module 2 through the magnetic external connection component 15 with an adjustable angle.

[0037] Specifically, in Figure 1 In the fan module shown, the conductive component 14 is electrically connected to the control module 2, and the control module 2 is externally connected via the magnetic external component 15. The fan module 1 is used to supply air to the user, and the control module 2 is used to perform switch control and adjust the wind speed of the external fan module 1. The conductive component 14 and the magnetic external component 15 are distributed on the same surface of the support seat 11, and the magnetic external component 15 is distributed around the periphery of the conductive component 14, so that the electrical connection between the conductive component 14 and the control module 2 is more stable, avoiding the phenomenon of connection deviation and poor contact or even power failure caused by accidental touch.

[0038] In a specific embodiment, the conductive component 14 and the magnetic external component 15 are located on the bottom surface of the support base 11, that is, the control module 2 is installed on the bottom surface of the fan module 1; in another specific embodiment, the conductive component 14 and the magnetic external component 15 are located on the side of the support base 11, that is, the control module 2 is installed on the side of the fan module 1, which can be flexibly designed according to product design requirements.

[0039] In addition, the existing electric fan can rotate the blade part by rotating the motor, so that the air outlet direction of the blade part is adjustable, but this type of electric fan needs to be equipped with a rotating motor, and when in use, it needs to wait until it rotates to a preset angle before stopping, which is costly and inconvenient. To this end, the fan module proposed in the utility model is connected to the control module 2 with an adjustable angle through the magnetic external component 15, which solves the problem that the relative angle between the blade part and the control base part of the existing split electric fan is not adjustable, and improves the flexibility of the split electric fan while ensuring the stability of the electrical connection.

[0040] Preferably, the electrical component 14 and the magnetic external component 15 are respectively installed on the bottom surface of the support base 11; the magnetic external component 15 is an annular magnetic sheet, or is composed of a plurality of concentrically distributed annular magnetic sheets, and the conductive component 14 is located in the center area of ​​the annular magnetic sheet.

[0041] Specifically, the support seat 11 is a square shell or a cylindrical shell, etc., which is small in size, does not take up space, has a simple appearance, is easy to produce, and is easy to store. It should be noted that when the magnetic external component 15 is an annular magnetic sheet, or is composed of a number of concentrically distributed annular magnetic sheets, if the magnetic mounting structure corresponding to the surface of the matching control module is consistent and is also composed of annular magnetic sheets, then the fan module can be installed on the control module at any angle of 360°. Specifically, the magnetic sheet can be fixed in the mounting groove by gluing.

[0042] Preferably, the conductive component 14 and the magnetic external component 15 are respectively installed on the bottom surface of the support base 11; the magnetic external component 15 is a combination of a plurality of magnetic sheets, and the plurality of magnetic sheets are evenly distributed around the conductive component 14 as the center.

[0043] The purpose of such a setting is to use a number of magnetic sheets to be equally spaced around the conductive component 14 so that the combination of the fan module 1 and the control module 2 is more solid, the magnetic force is evenly distributed, and the stability is ensured while improving the installation efficiency. It should be noted that when the magnetic external component 15 is a combination of a number of magnetic sheets, if the magnetic installation structure corresponding to the surface of the matching control module is consistent and is also composed of a number of magnetic sheets, then the relative angle formed by the fan module and the control module is determined by these magnetic sheets. Specifically: when the magnetic installation structure is 4 circular magnetic sheets, the fan module and the control module can be installed at four variable angles, and the angles are 0, 90°, 180° and 270° respectively. If there are 3 circular magnetic sheets, three variable angles are realized, and the angles are 0, 120° and 240° respectively. The shape of the magnetic sheet can be square, circular or polygonal, etc., preferably circular.

[0044] Preferably, the bottom surface of the support base 11 is provided with an inwardly concave installation groove, the magnetic external connection component 15 is installed in the installation groove, and the top surface of the magnetic external connection component 15 is flush with the surface of the support base 11 .

[0045] Specifically, the conductive component 14 and the magnetic external component 15 are respectively installed on the bottom surface of the support base 11, so that the control module 2 is located on the top of the fan module 1, and the stacking is stable in structure, good in appearance, good in practicality, and more convenient for disassembly and installation. The bottom surface of the support base 11 is provided with an inwardly concave installation groove, and the magnetic external component 15 is located in the installation groove. The top surface of the magnetic external component 15 is flush with the surface of the support base 11, which can ensure smooth and stable installation, reduce vibration and looseness, and prevent failures and damage caused by unstable installation.

[0046] Preferably, the conductive component 14 is at least one of a conductive elastic needle, a conductive spring, a conductive contact, a conductive plug and a conductive metal base.

[0047] In combination with actual product design requirements, the electrical connection methods that can be adopted between the fan module 1 and the control module 2 include but are not limited to: conductive contacts matched with conductive contacts, conductive elastic needles matched with conductive elastic needles, conductive elastic needles matched with conductive copper base surfaces, conductive springs matched with conductive springs, conductive springs matched with conductive contacts, conductive plugs matched with sockets, conductive plugs matched with conductive contacts, etc.

[0048] Preferably, the conductive component 14 is a conductive copper base, the copper base surface of the conductive copper base is exposed on the outer wall of the support base 11, and the copper base surface is used to abut against the conductive elastic needles of the control module 2. Under the pressure of the fan module 1, the conductive elastic needles of the control module 2 can shrink to the wall surface of the control module 2, so that the two fit together to achieve stable conduction.

[0049] Preferably, the bottom surface of the support seat 11 is provided with an inwardly concave through groove, and the conductive component 14 is a conductive metal base surface, which is fixedly installed in the through groove, and the top surface of the conductive metal base surface is flush with the surface of the support seat 11.

[0050] Specifically, the conductive metal base has high durability and anti-aging performance, a stable structure, and can maintain good electrical connection and conductivity in a vibration environment. The manufacturing process is relatively simple, and it is easy to achieve large-scale production, improve production efficiency and reduce manufacturing costs. The shape and size of the conductive metal base can be adjusted according to the design requirements of the fan module 1 and the control module 2, and has a certain degree of flexibility.

[0051] Preferably, the support base 11 is a square structure; the fan blade assembly 12 includes a fan blade, a fan blade protective cover and a motor, the fan blade is rotatably installed in the fan blade protective cover 13, the motor is electrically connected to the conductive assembly 14, and the motor is used to receive the signal of the control module 2 and drive the rotation of the fan blade;

[0052] The conductive component 14 and the magnetic external component 15 are respectively exposed on the bottom surface of the support base 11. The bottom surface of the support base 11 is provided with a plurality of inwardly concave mounting grooves, the mounting grooves are circular slots, and the plurality of mounting grooves are equally spaced and distributed around the conductive component 14 as the center.

[0053] The magnetic external component 15 is a magnetic installation structure, which is a combination of a plurality of circular magnetic sheets, the circular magnetic sheets are adapted to the size of the circular slots, the circular magnetic sheets are fixedly installed in the circular slots, and the top of the circular magnetic sheets is flush with the surface of the support seat 11;

[0054] The conductive component 14 is a conductive copper base, and the conductive copper base is in an inner circle and outer ring structure. The conductive copper base is directly opposite to the conductive part of the control module 2 to achieve electrical connection.

[0055] Specifically, the motor is electrically connected to the conductive component 14 to drive the fan blades to rotate, and the fan blades are arranged inside the fan blade protective cover 13 to prevent the rotating fan blades from scratching people, thereby increasing safety protection performance.

[0056] In one embodiment, the magnetic external component 15 is a magnetic installation structure, which is a combination of four circular magnetic sheets, which are respectively distributed on the four sides of the square structure, and can provide a strong adsorption force. The circular magnetic sheet is matched with the size of the circular slot, and the four circular magnetic sheets are fixedly installed in the circular slot. The four circular magnetic sheets are equally spaced around the conductive component 14, making the installation more stable and simple. At the same time, the circular magnetic sheet can achieve precise alignment and positioning, reduce installation errors, and ensure that the installation is in the correct position to achieve electrical connection. The above embodiment is particularly suitable for scenarios where the air outlet direction and the control panel direction need to be different. For example, it can prevent users in the air outlet direction area from being attracted by the control panel and operating the control panel at will, and the fan module and the control module can be adjusted to an installation mode with a relative angle of 180°. The top of the four circular magnetic sheets is flush with the surface of the support seat 11, maintaining the stability of the installation of the fan module 1 and the control module 2, and improving the overall appearance.

[0057] The conductive base surface of the conductive component 15 is a conductive copper base surface, and the conductive copper base is in contact with the control module 2. The conductive copper base is an inner circle and outer ring structure, which can provide certain support to prevent the conductive contact point from loosening due to vibration and ensure long-term stable connection. The conductive copper base surface and the conductive part of the control module 2 are directly opposite to each other to achieve electrical connection.

[0058] It should be noted that the utility model also provides a modular electric fan, such as Figure 2 As shown, it includes the above-mentioned fan module 1, control module 2 and power module 3, wherein the control module 2 and the power module 3 are respectively provided with a connecting portion and a conductive portion; the fan module 1 is detachably connected to the connecting portion of the control module 2, and the fan module 1 and the control module 2 are electrically connected to the conductive portion of the control module 2 through the conductive component 14, and the fan module is detachably connected to the control module 2 through the magnetic external component 15 with an adjustable angle;

[0059] The connection portion of the power module 3 is detachably connected to another connection portion of the control module 2 , and the conductive portion of the power module 3 is electrically connected to another conductive portion of the control module 2 .

[0060] Specifically, the fan module 1, the control module 2 and the power module 3 are three independent modules, which can be disassembled and replaced with different specifications to improve applicability and practicality. And when any one of them is damaged, it can be disassembled for repair or replacement. The conductive part of the control module 2 can be a conductive elastic needle or a conductive spring or a conductive contact or a conductive plug or a conductive metal base, and the connecting part of the control module 2 can be a magnetic mounting part or a mechanical snap-on part; the conductive part of the power module 3 can be a conductive elastic needle or a conductive spring or a conductive contact or a conductive plug or a conductive metal base, and the connecting part of the power module 3 can be a magnetic mounting part or a mechanical snap-on part.

[0061] In addition, the three independent structures of the fan module 1, the control module 2 and the power module 3 can be combined by the user according to actual needs by selecting different types of structures. If adjustment or replacement is required, matching structures can also be purchased separately for combination. Specifically, the fan module 1 of different sizes (6 inches, 7 inches, 8 inches, etc.) can be flexibly selected according to needs and combined with the control module 2. It has good versatility, reduces resource waste, and improves the applicability and flexibility of the electric fan.

[0062] Preferably, if Figure 3 and Figure 4As shown, the power module 3 includes a housing 31, a battery, a USB interface 32, a conductive elastic connection end 33 and a combination component 34, the battery is installed inside the housing 31, the USB interface 32 is exposed on the outer wall of the housing 31, and the battery is charged through the USB interface 32;

[0063] The conductive elastic connection end 33 and the combination component 34 are exposed on the surface of the accommodating shell 31, and the combination component 34 is used to removably install the control module 2; the conductive elastic connection end 33 is partially exposed on the outer wall of the accommodating shell 31, and the exposed part of the conductive elastic connection end 33 is used to be electrically connected to the control module 2.

[0064] Specifically, the battery is arranged inside the power module 3, and the battery provides power for the fan module 1 and the control module 2. The USB interface 32 is arranged on one side of the power module 3, and the USB interface 32 and an external power source are connected via a data cable to charge the battery or the modular electric fan. At the same time, the power module 3 is provided with a variety of battery capacities, which can be flexibly combined with the fan module 1 and the control module 2 to meet different battery life requirements.

[0065] The combination assembly 34 is used to detachably install the control module 2, the conductive elastic connection end 33 can be a conductive elastic needle, the conductive elastic connection end 33 is electrically connected to the conductive part of the control module 2, the conductive elastic connection end 33 is partially exposed on the outer wall of the accommodating shell 31, and the exposed part of the conductive elastic connection end 33 is used to achieve stable electrical connection with the conductive part of the control module 2. The shape of the accommodating shell 31 is square or cylindrical, etc., and the structure is the same as that of the support seat 11 and the shell of the control module, so that the fan module, the control module and the power module are integrally formed after being installed and connected, and the appearance is beautiful.

[0066] Preferably, the combination component 34 is installed on the top surface of the accommodating shell 31, and the top surface of the accommodating shell 31 is provided with an inwardly concave installation groove. The combination component 34 is a magnetic mounting structure, and the magnetic mounting structure is fixedly installed in the mounting groove, and the top of the magnetic mounting structure is flush with the surface of the accommodating shell 31.

[0067] Specifically, the combination component 34 is located on the top surface of the accommodating shell 31, so that the control module 2 is located on the top of the power module 3, and the stacking is stable in structure, and the disassembly and installation are more convenient. The top surface of the accommodating shell 31 is provided with an inwardly concave installation groove, and the combination component 34 is located in the installation groove. The top surface of the combination component 34 is flush with the surface of the accommodating shell 31, which can ensure smooth and stable installation. The combination components 34 are distributed around the conductive elastic connecting end 33 at equal intervals, and are magnetically attracted to the connecting part of the control module 2 to form a stable connection structure, completing the connection between the control module 2 and the power module 3. Preferably, the magnetic attraction installation structure is a plurality of magnetic attraction sheets, which can improve the installation efficiency and ensure the firmness and stability of the installation. The shape of the magnetic attraction sheet can be square, circular, polygonal, etc.

[0068] In a specific embodiment, the conductive elastic connection end 33 is located at the center of the top surface of the housing 31; the magnetic installation structure is a combination of a plurality of circular magnetic sheets, which are equally spaced around the conductive elastic connection end 33, so that the combination of the control module 2 and the power module 3 is more solid, the magnetic force is evenly distributed, and the stability is ensured while improving the installation efficiency. Preferably, the housing 31 is a square housing or a cylindrical housing, etc., which is small in size, does not take up space, has a simple appearance, is easy to produce, and is easy to store.

[0069] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A fan module, characterized in that: It includes a support base, a fan blade assembly, a conductive assembly and a magnetic external assembly, wherein the fan blade assembly is connected to the support base through a support rod; The conductive component and the magnetic external component are respectively installed on the support base, the conductive component and the magnetic external component are distributed on the same surface of the support base, and the magnetic external component is distributed around the outer periphery of the conductive component, and the conductive component and the magnetic external component are partially exposed on the outer wall of the support base; the exposed part of the conductive component is used to be electrically connected to the control module, so as to transmit electric energy and / or control signals between the fan module and the control module; The exposed portion of the magnetic external connection component is used for magnetic connection with the control module, and the fan module is detachably connected to the control module with an adjustable angle through the magnetic external connection component.

2. A fan module according to claim 1, characterized in that: The conductive component and the magnetic external component are respectively installed on the bottom surface of the support base; the magnetic external component is an annular magnetic sheet, or is composed of a plurality of concentrically distributed annular magnetic sheets, and the conductive component is located in the center area of ​​the annular magnetic sheet.

3. The fan module according to claim 1, characterized in that: The conductive component and the magnetic external component are respectively installed on the bottom surface of the support base; the magnetic external component is a combination of a plurality of magnetic sheets, and the plurality of magnetic sheets are distributed around the conductive component at equal intervals.

4. A fan module according to claim 2 or 3, characterized in that: The bottom surface of the support base is provided with an inwardly concave installation groove, the magnetic external connection component is installed in the installation groove, and the top surface of the magnetic external connection component is flush with the surface of the support base.

5. The fan module according to claim 1, characterized in that: The conductive component is at least one of a conductive elastic needle, a conductive spring, a conductive contact, a conductive plug and a conductive metal base.

6. A fan module according to claim 5, characterized in that: The bottom surface of the support seat is provided with an inwardly concave through groove, and the conductive component is a conductive metal base surface, which is fixedly installed in the through groove, and the top surface of the conductive metal base surface is flush with the surface of the support seat.

7. The fan module according to claim 1, characterized in that: The support base is a square structure; the fan blade assembly includes a fan blade, a fan blade protective cover and a motor, the fan blade is rotatably installed in the fan blade protective cover, the motor is electrically connected to the conductive component, and the motor is used to receive a signal from the control module and to drive the rotation of the fan blade; The conductive component and the magnetic external component are respectively exposed on the bottom surface of the support base, and the bottom surface of the support base is provided with a plurality of inwardly concave mounting grooves, the mounting grooves are circular slots, and the plurality of mounting grooves are equally spaced and distributed around the conductive component as the center; The magnetic external component is a magnetic mounting structure, which is a combination of a plurality of circular magnetic sheets, the circular magnetic sheets are adapted to the size of the circular slots, the circular magnetic sheets are respectively fixedly mounted in the circular slots, and the top of the circular magnetic sheets is flush with the surface of the support seat; The conductive component is a conductive copper base, the conductive copper base is in an inner circle and outer ring structure, and the conductive copper base is directly opposite to the conductive part of the control module to achieve electrical connection.

8. A modular electric fan, characterized in that: The fan module, control module and power module according to any one of claims 1 to 7 are included, wherein the control module and the power module are respectively provided with a connecting portion and a conductive portion; the fan module is detachably connected to the connecting portion of the control module, and the fan module is electrically connected to the control module through the conductive component and the conductive portion of the control module, and the fan module is detachably connected to the control module through the magnetic external component with an adjustable angle; The connecting portion of the power module is detachably connected to another connecting portion of the control module, and the conductive portion of the power module is electrically connected to another conductive portion of the control module.

9. A modular electric fan according to claim 8, characterized in that: The power module comprises a housing, a battery, a USB interface, a conductive elastic connection terminal and a combination component, wherein the battery is installed inside the housing, the USB interface is exposed on the outer wall of the housing, and the battery is charged through the USB interface; The conductive elastic connection end and the combination component are exposed on the surface of the accommodating shell, and the combination component is used to removably install the control module; the conductive elastic connection end is partially exposed on the outer wall of the accommodating shell, and the exposed part of the conductive elastic connection end is used to be electrically connected to the control module.

10. A modular electric fan according to claim 9, characterized in that: The combination component is installed on the top surface of the accommodating shell, and the top surface of the accommodating shell is provided with an inwardly concave installation groove. The combination component is a magnetic installation structure, and the magnetic installation structure is fixedly installed in the installation groove, and the top of the magnetic installation structure is flush with the surface of the accommodating shell.

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