CN111441978A - A combined fan unit - Google Patents

Abstract

The application provides a modular fan unit, fan body can realize the rotation of 180 degrees within range arbitrary angles around the pin joint base to the angle of adjusting fan body, thereby can conveniently select required angle and realize blowing. Blowing air to any object without dead corners, thereby enabling the fan apparatus to achieve the effect of a household fan. Because charging base is rotatable, will charging base rotate 90 degrees whole processes about need not additionally to add and support the accessory, use more nimble. The pin joint base can be for the form of tearing apart with charging base, and the base that charges after the tear apart can be a treasured that charges, and one side of charging base has the second mounting hole to join in marriage with the axis body of being connected of pin joint base and joins in marriage the dress, can make the fan become handheld fan from a sitting posture fan. Moreover, the charging base can be assembled with the automatic rotating base or the clamp accessory, the three parts are integrated, any position can be fixed by the fan, and therefore the situation that arms of a user are tired and can only be placed on a desktop for use is greatly reduced.

Description

A combined fan unit

technical field

The invention relates to the field of fans, in particular to a combined fan device.

Background technique

In the prior art, the home fan can obtain its function only when connected to an alternating current, and its portability and practicability are limited. Therefore, a portable fan is introduced in the prior art, but the portable fan in the prior art has the following disadvantages: when the wind power of the portable fan increases, it is prone to fall, and it needs to be additionally equipped with a fixed bracket to be placed on the desktop for use; the portable fan in the prior art has the following disadvantages. There is only the most basic air supply function, its function is single, and the use experience is not good. After solving the problems of wind power and noise, the invention can replace the domestic fan and achieve a breakthrough in the field of use of the portable fan by adding the patented features of the application.

SUMMARY OF THE INVENTION

In order to solve the above problem, the present invention provides a combined fan device, which solves the problems that the existing fan needs to be additionally equipped with a fixing bracket to be placed on the desktop, the function is single, and the use experience is poor by technically transforming the existing fan.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a combined fan device, including a fan unit, the fan unit includes a fan body, a pivot base, and a charging base, and the charging base has a built-in battery and is connected to the battery The power supply control motherboard; wherein the two sides of the bottom end of the fan body are pivotally connected to the two sides of the pivot base respectively through the pivot shaft, so that the fan body can be pivoted relative to the pivot base; wherein the pivot base The bottom end of the charging base is protruded with a hollow connecting shaft, and the hollow connecting shaft is provided with a first connecting terminal assembly that is in electrical communication with the fan body; wherein the upper end surface of the charging base is provided with a first mounting hole, and one side of the charging base is provided with a first mounting hole. There is a second installation hole; both the first installation hole and the second installation hole are provided with a second connection terminal assembly electrically connected with the power control main board; the connection shaft of the pivot base is detachably assembled in the first installation hole or the second installation hole, and the first connection terminal assembly located in the connection shaft is electrically connected with the second connection terminal assembly; when the connection shaft of the pivot base is detachably assembled at the first installation hole or the second installation hole , the pivot base can freely rotate around the axial direction of the connecting shaft on a plane perpendicular to the axial direction of the connecting shaft.

Further, the charging base includes a charging front shell and a charging rear shell, the rear end of the charging rear shell is provided with a battery slot for placing the battery, and the front end of the charging rear shell is provided with a main board slot for placing the power control motherboard; The battery is placed in the battery slot, and the battery slot is covered with a battery cover; the power control mainboard is placed in the mainboard slot, and the shell before charging is closed in the mainboard slot; and the upper surface of the rear shell is A first installation hole communicated with the main board slot is opened, and a second installation hole communicated with the main board slot is opened on one side of the charging rear shell.

Further, the connection between the upper end surface of the charging case and the rear end surface of the charging case is an arc structure.

Further, the side of the charging rear shell away from the second mounting hole is also provided with a charging hole communicating with the motherboard slot, and the charging hole is provided with a first charging interface electrically connected with the power control motherboard; the charging front shell is provided with A switch hole communicated with the main board slot and an air volume adjustment waist hole, and the switch hole is provided with a switch button that is electrically connected to the power control main board, and the air volume adjustment waist hole is provided with an air volume adjustment that is electrically connected to the power control main board. A push rod; a first magnet and a plurality of third connection terminals electrically connected to the power control mainboard are arranged at the bottom of the charging rear case.

Further, it also includes an automatic rotating base, the automatic rotating base includes a rotating casing, a rotating cover plate disposed on the upper end surface of the rotating casing, a drive motor disposed in the rotating casing and drivingly connected with the rotating cover plate, and a rotating cover plate disposed in the rotating casing. A rotating base control main board in the body and electrically connected with the driving motor; a second magnet is arranged at the center of the surface of the rotating cover; and a multi-turn conductive ring extending from the outer circumference of the second magnet to the outer circumference of the rotating cover is arranged on the surface of the rotating cover, The conductive ring is electrically connected to the control motherboard of the rotating base; wherein the charging base is magnetically attracted to the second magnet of the automatic rotating base through the first magnet, and a plurality of third connection terminals are in contact with the corresponding conductive rings, and the drive motor drives the fan The unit rotates about the geometric center of the first magnet in a plane parallel to the self-rotating base.

Further, the side wall of the rotating casing is provided with a second charging interface that is electrically connected to the control mainboard of the rotating base.

Further, it also includes a clip fitting, wherein the surface of the clip fitting is provided with a third magnet and mounting posts on both sides of the third magnet; wherein the bottom wall of the bottom of the charging case is provided with mounting slots on both sides of the first magnet , wherein the clip fitting is magnetically attracted by the third magnet and the first magnet of the charging base, and the mounting post of the clip fitting is inserted into the mounting groove of the charging base.

Further, it also includes a clip fitting, wherein the surface of the clip fitting is provided with a third magnet and mounting posts located on both sides of the third magnet; the mounting post includes an external end and a connecting end connected in sequence, and the outer diameter of the external end is The outer diameter of the connecting end is larger than the outer diameter of the connecting end, and the connecting end is arranged on the surface of the clip fitting; the bottom wall of the rotating casing is provided with a fitting hole corresponding to the mounting column, wherein the fitting hole includes an insert with a width corresponding to the outer diameter of the outer end. A hole, an arc-shaped waist hole extending along the circumferential direction of the bottom wall of the rotating shell and having a width corresponding to the outer diameter of the connecting end, the insertion hole is communicated with the end of the arc-shaped waist hole; wherein the mounting post of the clip fitting is inserted into the insertion hole inside, and by rotating the clip fitting, the connecting end of the mounting post is moved to the end of the arc-shaped waist hole.

The combined fan device according to claim 1, wherein a thermal sensor is further provided in the fan body, and the thermal sensor is electrically connected to the first connection terminal assembly.

The beneficial effects of the present invention are:

1. The fan body can rotate at any angle within 180 degrees around the pivot base to adjust the angle of the fan body, so that the desired angle can be easily selected to achieve blowing. Moreover, when the connecting shaft of the pivoting base is detachably assembled in the first mounting hole, the pivoting base can freely rotate around the axial direction of the connecting shaft on a plane perpendicular to the axial direction of the connecting shaft; therefore, The above arrangement enables the fan unit to be adjusted 360 degrees and blows air to any target without dead angle, thereby enabling the fan device to achieve the effect of a household fan.

2. Since the charging base can be rotated, when the charging base is rotated left and right by 90 degrees (making the projection of the charging base and the pivot base on the XY space plane a "cross" structure); no matter how strong the wind is, the fan body is placed on the desktop with It can stand on other planes without falling down. At the same time, when adjusting the angle, because the center of gravity is on the top, the top is heavy and the bottom is light, so it is impossible to stand. This cross method solves the problem of the center of gravity, so the fan body can rotate at any angle within 180 degrees around the pivot base. There is no need to add additional support accessories in the whole process, and the use is more flexible. And because the first magnet is attached to the bottom of the charging base, the cross method can be freely attached to the surface of the iron without falling.

3. Since the connecting shaft of the pivot base is detachably assembled at the first mounting hole or the second mounting hole, and the first connecting terminal assembly located in the connecting shaft is electrically connected with the second connecting terminal assembly; The base and the charging base are detachable. After the separation, the charging base can be a power bank. There is a second mounting hole on one side of the charging base to be assembled with the connecting shaft of the pivot base, so that the fan can be separated from a sitting fan. It becomes a hand-held fan; since the pivot base and the charging base are detachable, the charging base can be a power bank after detachment, which can charge electronic equipment; that is, the fan device of the present application has more powerful functions and improves the user experience.

4. In this application, the automatic rotating base and the charging base can be quickly aligned by means of magnetic coupling, and the electrical connection between the fan body and the automatic rotating base can be realized at the same time; When connected at any angle within the range, the battery in the charging base can still automatically and quickly supply power to the drive motor of the automatic rotating base and the control motherboard of the rotating base.

5. The fan unit is used in conjunction with the clip fitting, and the third magnet and the first magnet of the charging base are magnetically attracted by the sub fitting, so that the two can be quickly connected to play a fixed role; and because the mounting post of the clip fitting is plugged In the installation slot of the charging bottom, it also has an anti-collision function, which will not make the fan reverse left and right, and can only be removed from the fan unit upwards.

Description of drawings

Figure 1 is a schematic diagram of the structure of the fan unit.

Figure 2 is a schematic diagram of the structure of the fan unit rotating charging base.

FIG. 3 is a schematic diagram of the structure of the fan unit into a hand-held form.

FIG. 4 is a schematic diagram of the structure of the central pivot shaft of the fan unit.

Figure 5 is a schematic diagram of the structure of the fan unit and the auto-rotating base assembled.

Figure 6 is a three-dimensional schematic diagram of the automatic rotating base.

Figure 7 is a bottom view of the auto-rotating base.

FIG. 8 is a schematic three-dimensional structure diagram of the charging base.

FIG. 9 is another three-dimensional schematic diagram of the charging base.

Fig. 10 is a schematic diagram of the structure of the fan unit after assembly with the clip fittings.

Fig. 11 is a schematic three-dimensional structure diagram of the clip fitting.

Figure 12 is a three-dimensional schematic diagram of the fan unit assembled with the automatic rotating base and the clip accessories.

Description of reference numerals: fan body 11, pivot 111, pivot base 12, charging base 13, switch button 131, air volume adjustment push rod 132, first charging interface 133, charging front shell 134, charging rear shell 135, first Magnet 136, second mounting hole 137, mounting slot 138, third connecting terminal 139, battery cover 130, first mounting hole 1300, automatic rotating base 2, rotating housing 21, rotating cover 22, second magnet 23, conductive The ring 24 , the second charging interface 25 , the insertion hole 26 , the arc-shaped waist hole 27 , the clip fitting 3 , the third magnet 31 , the mounting post 32 , the external end 321 , and the connecting end 322 .

Detailed ways

1-4, a combined fan device includes a fan unit. The fan unit includes a fan body 11, a pivot base 12, and a charging base 13. The charging base 13 has a built-in battery and is connected to the battery. The two sides of the bottom end of the fan body 11 are pivotally connected to the two sides of the pivot base 12 through the pivot shaft 111, so that the fan body 11 can pivot relative to the pivot base 12. The bottom end of the pivot base 12 is protruded with a hollow connecting shaft, and the hollow connecting shaft is provided with a first connecting terminal assembly that is electrically connected with the fan body 11; wherein the upper end surface of the charging base 13 is provided with a first installation hole 1300, a second installation hole 137 is opened on one side of the charging base 13; the first installation hole 1300 and the second installation hole 137 are both provided with a second connection terminal component electrically connected to the power control motherboard; the pivot connection The connection shaft of the base 12 is detachably fitted at the first installation hole 1300 or the second installation hole 137, and the first connection terminal assembly located in the connection shaft is electrically connected with the second connection terminal assembly; the connection of the pivot base 12 When the shaft is assembled at the first installation hole 1300 or the second installation hole 137 , the pivot base 12 can freely rotate around the axial direction of the connecting shaft on a plane perpendicular to the axial direction of the connecting shaft.

The fan body 11 can be rotated at any angle within 180 degrees around the pivot base 12 to adjust the angle of the fan body 11 , so that the desired angle can be conveniently selected to achieve blowing. Moreover, when the connecting shaft of the pivot base 12 is detachably assembled in the first mounting hole 1300, the pivot base 12 can freely rotate around the axial direction of the connecting shaft on a plane perpendicular to the axial direction of the connecting shaft. Therefore, the above-mentioned arrangement enables the fan unit to be adjusted 360 degrees, and blows air to any target without dead angle, thereby enabling the fan device to achieve the effect of a household fan.

Please refer to FIG. 2 , since the charging base 13 is rotatable, when the charging base 13 is rotated left and right by 90 degrees (so that the projection of the charging base 13 and the pivot base 12 on the XY space plane is a “cross” structure); No matter how strong the wind is, the fan body 11 can stand on the table top and other planes, and it can stand upright. At the same time, when adjusting the angle, because the center of gravity is on the top and the top is heavy and the bottom is light, it is impossible to stand. This cross method solves the problem of the center of gravity, so the fan body 11 can rotate at any angle within 180 degrees around the pivot base 12 . The whole process does not require additional support accessories, and the use is more flexible. Moreover, since the first magnet 136 is attached to the bottom of the charging base 13, it can be adsorbed on the surface of the iron at will without falling off by adopting the cross method.

Please refer to FIG. 3 , because the connecting shaft of the pivot base 12 is detachably fitted at the first mounting hole 1300 or the second mounting hole 137 , and the first connecting terminal assembly located in the connecting shaft is connected to the second The terminal components are electrically connected; the pivot base 12 and the charging base 13 are in a detachable form. After the disassembly, the charging base 13 can be a power bank, and one side of the charging base 13 has a second installation hole 137 and the pivot base 12 The connecting shaft assembly can make the fan change from a sitting fan to a hand-held fan.

Referring to FIG. 2 , further, the connection between the upper end surface of the charging case 135 and the rear end surface of the charging case 135 is an arc structure. Since there is a second mounting hole 137 on one side of the charging base 13 to be assembled with the connecting shaft of the pivot base 12, the fan can be changed from a sitting fan to a hand-held fan. The rounded structure makes the charging base 13 better. It fits perfectly with the user's palm, making the grip experience better and more ergonomic. Moreover, when the second mounting hole 137 on one side of the charging base 13 is assembled with the connecting shaft of the pivoting base 12, the pivoting base 12 can be freely rotated around the charging base 13, and the user can rotate the charging base 13 according to actual needs. The charging base 13 is used to adjust the position where the arc structure of the charging base 13 contacts the user's hand, so the user can achieve a very comfortable grip experience with either the left hand or the right hand.

8-9, further, the charging base 13 includes a charging front shell 134 and a charging rear shell 135. The rear end of the charging rear shell 135 is provided with a battery slot for placing batteries. The front end is provided with a mainboard slot for placing the power control mainboard; wherein the battery is placed in the battery slot, and the battery slot is covered with a battery cover 130; the power control mainboard is placed in the mainboard slot, and the charging front shell 134 is covered in the main board slot; and the upper surface of the rear shell 135 is provided with a first mounting hole 1300 that communicates with the main board slot, and one side of the rear shell 135 is provided with a second mounting hole 137 that communicates with the main board slot. . The side of the charging rear shell 135 away from the second mounting hole 137 is also provided with a charging hole communicating with the main board slot, and the charging hole is provided with a first charging interface 133 electrically connected to the power control main board; the charging front shell 134 A switch hole communicated with the main board slot and an air volume adjustment waist hole are provided, and the switch hole is provided with a switch button 131 electrically connected with the power control main board, and the air volume adjustment waist hole is provided with an electrical connection with the power control main board. A first magnet 136 and a plurality of third connection terminals 139 electrically connected to the power control mainboard are provided at the bottom of the charging rear case 135 .

In this specific embodiment, a battery cover 130 is provided, that is, the user can directly open the battery cover 130 to replace the internal battery; at the same time, the charging base 13 can be used as a power bank, wherein the first charging interface 133 is a type-c interface, which can be used for The mobile phone is charged; the user can start or close the fan body 11 through the switch button 131, and adjust the phoenix volume through the air volume adjustment waist hole; and in order to avoid accidentally touching the switch button 131 in the backpack to start the fan body 11, the power control motherboard is provided with a corresponding According to the control program, the fan body 11 can be started by pressing the switch button 131 twice continuously, which can effectively solve the problem of accidental touch.

Please refer to FIGS. 6-7 , and further includes an automatic rotating base 2 . The automatic rotating base 2 includes a rotating casing 21 , a rotating cover plate 22 arranged on the upper end surface of the rotating casing 21 , and a rotating casing 21 . A drive motor inside and drivingly connected with the rotating cover plate 22, a rotating base control main board arranged in the rotating housing 21 and electrically connected with the drive motor; a second magnet 23 is arranged at the center of the surface of the rotating cover plate 22; then the rotating cover The surface of the plate 22 is provided with a multi-circle conductive ring 24 extending from the outer circumference of the second magnet 23 to the outer circumference of the rotating cover plate 22. The conductive ring 24 is electrically connected to the rotating base control main board; wherein the charging base 13 is connected to the automatic rotation through the first magnet 136. The second magnet 23 of the base 2 is magnetically attracted, and a plurality of third connection terminals 139 are in contact with the corresponding conductive rings 24 . The drive motor drives the fan unit to rotate around the first The geometric center of the magnet 136 rotates.

Please refer to FIG. 5 , in this application, the automatic rotating base 2 and the charging base 13 can be quickly aligned by means of magnetic coupling, and the electrical connection between the fan body 11 and the automatic rotating base 2 can be realized at the same time; The motor drives the fan unit to rotate around the geometric center of the first magnet 136 on a plane parallel to the self-rotating base 2; thus, when the fan body 11 is connected to the self-rotating base 2 at any angle within the range of 360 degrees, The battery in the charging base 13 can still automatically and quickly supply power to the drive motor of the automatic rotating base 2 and the rotating base control main board. Therefore, the fan device of the present invention is easy to use, and can realize the power supply of the automatic rotating base 2 without accurately aligning the automatic rotating base 2 with the charging base 13, and the fan unit can realize 360-degree rotation adjustment through the automatic rotating base 2. In this specific embodiment, four conductive rings 24 are provided, corresponding to the signal positive pole, the signal negative pole, the power supply positive pole, and the power supply negative pole; therefore, four third connection terminals 139 are provided.

Further, the side wall of the rotating casing 21 is provided with a second charging interface 25 that is electrically connected to the rotating base control mainboard. The user can connect to the second charging interface 25 through the corresponding charging cable to supply power for the drive motor and the control board of the rotating base, and if the charging base 13 is connected to the automatic rotating base 2, it will also supply the battery in the charging base 13. Charge.

10-11, in the present application, the fan unit can also be used in conjunction with the clip fitting 3, specifically, the clip fitting 3 is further included, wherein the surface of the clip fitting 3 is provided with a third magnet 31 and Mounting posts 32 on both sides of the third magnet 31 ; wherein the bottom wall of the bottom of the charging case 135 is provided with mounting slots 138 on both sides of the first magnet 136 , wherein the clip fitting 3 communicates with the charging base through the third magnet 31 The first magnet 136 of the charging base 13 is magnetically attracted, and the mounting post 32 of the clip fitting 3 is inserted into the mounting groove 138 of the charging base 13 .

The fan unit is used in conjunction with the clip fitting 3, and the third magnet 31 and the first magnet 136 of the charging base 13 are magnetically attracted by the sub fitting, so that the two can be quickly connected and play a fixed role; The mounting post 32 is inserted into the mounting slot 138 of the charging base 13 , and also has an anti-collision function, so that the fan will not be reversed left and right, and the fan unit can only be detached upward. This function is suitable for crowded places, for example: when the clip accessory 3 is placed on the stroller, this accessory enables the fan unit to have an anti-fall function, and the clip accessory 3 can be fixed on the stroller for a long time, so that the fan The unit has the function of quick installation and separation. When the stroller needs to be folded, the clip fitting 3 does not need to be removed, so that the next time the fan unit is used, it is not necessary to set the position again. The fan unit has no dead angle adjustment direction and can be fixed in any position to blow to the target of the required wind force.

Please refer to FIG. 12 , further, wherein the fan unit is assembled with the automatic rotating base 2 first, and then the clip fitting 3 can be used in conjunction with the automatic rotating base 2 ; wherein the surface of the clip fitting 3 is provided with a third magnet 31 and the mounting posts 32 located on both sides of the third magnet 31; the mounting posts 32 include an external end 321 and a connecting end 322 connected in sequence, the outer diameter of the external end 321 is larger than that of the connecting end 322, and the connecting end 322 is provided on the surface of the clip fitting 3; the bottom wall of the rotating housing 21 is provided with a fitting hole corresponding to the mounting post 32, wherein the fitting hole includes an insertion hole 26 with a width corresponding to the outer diameter of the outer end 321, along the rotation An arc-shaped waist hole 27 extending in the circumferential direction of the bottom wall of the housing 21 and having a width corresponding to the outer diameter of the connecting end 322, the insertion hole 26 communicates with the end of the arc-shaped waist hole 27; wherein the mounting post 32 of the clip fitting 3 is inserted The connecting end 322 of the mounting post 32 is moved to the end of the arc-shaped waist hole 27 by rotating the clip fitting 3 . Then, due to the setting of the insertion hole 26 and the arc-shaped waist hole 27, the clip fitting 3 can be stably assembled with the automatic rotating base 2. When the two need to be separated, the clip fitting 3 needs to be rotated in the direction of the insertion hole 26, so that the The mounting post 32 is aligned with the insertion hole 26, and the clip fitting 3 is pulled out. The fan unit, the automatic rotating base 2, and the clip accessories 3 are combined into one, and the fan unit can be fixed in any position, which greatly reduces the user's arm soreness and can only be used on the desktop.

Further, the fan body 11 is also provided with a thermal sensor, and the thermal sensor is electrically connected to the first connection terminal assembly. The fan body 11 is also provided with a thermal sensor. First, the drive motor drives the fan unit to rotate around the geometric center of the first magnet 136 on a plane parallel to the automatic rotation base 2 , and the thermal sensor goes back and forth several times. Scanning, when it is detected that the heat sensation is stronger or the area is larger (for example: head, chest, etc.), the fan body 11 is controlled to automatically simulate natural wind or wind with lower power; when the heat sensation is weak or the area is weak The smaller one (for example: hands, feet, etc.), the fan body 11 is controlled to automatically simulate a strong wind force. This mode is the sleep mode, which greatly increases the user's experience and greatly reduces the user's illness. condition. The second mode is the power saving mode, when the human body leaves the fan, the fan will automatically shut down, but when the human body is close to the fan, the fan will automatically turn on. The drive motor drives the fan unit, which will scan the human body (for example: height, etc.), and then the scanned results will be transmitted to the automatic rotating base 2, and the automatic rotating base 2 will rotate left and right within the range according to the scanned range.

The above embodiments are only to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, various modifications and variations of the technical solutions of the present invention made by ordinary engineers and technicians in the art Improvements should all fall within the protection scope determined by the claims of the present invention.

Claims (9)

1. A combined fan device is characterized in that: the fan unit comprises a fan body, a pin joint base and a charging base, wherein a battery and a power supply control mainboard connected with the battery are arranged in the charging base; the two sides of the bottom end of the fan body are respectively pivoted with the two sides of the pivoting base through pivots, so that the fan body can pivot relative to the pivoting base; wherein, the bottom end of the pin joint base is convexly provided with a hollow connecting shaft, and a first connecting terminal component which is electrically communicated with the fan body is arranged in the hollow connecting shaft; the charging device comprises a charging base, a charging base and a charging device, wherein a first mounting hole is formed in the upper end surface of the charging base, and a second mounting hole is formed in one side of the charging base; the first mounting hole and the second mounting hole are internally provided with a second connecting terminal assembly electrically connected with the power control main board; the connecting shaft of the pivoting base is detachably assembled in the first mounting hole or the second mounting hole, and the first connecting terminal assembly positioned in the connecting shaft is electrically connected with the second connecting terminal assembly; when the connecting shaft of the pin joint base is detachably assembled at the first mounting hole or the second mounting hole, the pin joint base can freely rotate around the axis direction of the connecting shaft on a plane vertical to the axis direction of the connecting shaft.

2. The modular fan assembly of claim 1, further comprising: the charging base comprises a charging front shell and a charging rear shell, a battery groove for placing a battery is formed in the rear end of the charging rear shell, and a main board groove for placing a power supply control main board is formed in the front end of the charging rear shell; the battery is placed in a battery jar, and the battery jar covers the battery cover; the power supply control main board is placed in the main board groove, and the charging front shell covers the main board groove; and the surface of the upper end of the charging rear shell is provided with a first mounting hole communicated with the mainboard groove, and one side of the charging rear shell is provided with a second mounting hole communicated with the mainboard groove.

3. The modular fan assembly of claim 2, further comprising: and a circular arc structure is adopted between the upper end surface of the charging rear shell and the rear end surface of the charging rear shell.

4. The modular fan assembly of claim 2, further comprising: a charging hole communicated with the main board groove is further formed in one side, away from the second mounting hole, of the charging rear shell, and a first charging interface electrically connected with the power supply control main board is arranged in the charging hole; the charging front shell is provided with a switch hole and an air volume adjusting waist hole which are communicated with the main board groove, the switch hole is provided with a switch key electrically connected with the power supply control main board, and an air volume adjusting push rod electrically connected with the power supply control main board is arranged in the air volume adjusting waist hole; the bottom of the charging rear shell is provided with a first magnet and a plurality of third connecting terminals electrically connected with the power control mainboard.

5. The modular fan assembly of claim 4, further comprising: the automatic rotating base comprises a rotating shell, a rotating cover plate arranged on the upper end surface of the rotating shell, a driving motor arranged in the rotating shell and in driving connection with the rotating cover plate, and a rotating base control main board arranged in the rotating shell and electrically connected with the driving motor; a second magnet is arranged at the center of the surface of the rotating cover plate; then, the surface of the rotating cover plate is provided with a plurality of circles of conducting rings extending from the periphery of the second magnet to the periphery of the rotating cover plate, and the conducting rings are electrically connected with the rotating base control main plate; the charging base is magnetically attracted with a second magnet of the automatic rotating base through a first magnet, the third connecting terminals are in contact with the corresponding conducting rings, and the driving motor drives the fan unit to rotate around the geometric center of the first magnet on a plane parallel to the automatic rotating base.

6. The modular fan assembly of claim 5, further comprising: the lateral wall of rotatory casing is provided with the second interface that charges with rotating base control mainboard electric connection.

7. The modular fan assembly of claim 4, further comprising: the clamp comprises a clamp fitting and a fixing part, wherein a third magnet and mounting columns positioned on two sides of the third magnet are arranged on the surface of the clamp fitting; wherein the diapire of the backshell bottom of charging is provided with the mounting groove of first magnet both sides, wherein clip accessory is inhaled through third magnet and the first magnet magnetism of charging base, and clip accessory's erection column plug-in connection is in charging base's mounting groove.

8. The modular fan assembly of claim 5, further comprising: the clamp comprises a clamp fitting and a fixing part, wherein a third magnet and mounting columns positioned on two sides of the third magnet are arranged on the surface of the clamp fitting; the mounting column comprises an outer end and a connecting end which are connected in sequence, the outer diameter of the outer end is larger than that of the connecting end, and the connecting end is arranged on the surface of the clamp accessory; the bottom wall of the rotating shell is provided with an assembling hole corresponding to the mounting column, wherein the assembling hole comprises an inserting hole with the width corresponding to the outer diameter of the outer end and an arc-shaped waist hole which extends along the circumferential direction of the bottom wall of the rotating shell and has the width corresponding to the outer diameter of the connecting end, and the inserting hole is communicated with the tail end of the arc-shaped waist hole; wherein the mounting post of clip accessory is pegged graft in the plug-in hole, and makes the connecting end of mounting post remove to the end in arc waist hole through rotatory clip accessory.

9. The modular fan assembly of claim 1, further comprising: the fan body is internally provided with a thermal sensor which is electrically connected with the first connecting terminal assembly.

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