CN111441978A

CN111441978A - Combined fan device

Info

Publication number: CN111441978A
Application number: CN202010377357.7A
Authority: CN
Inventors: 李咏康
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-07-24
Also published as: WO2021223601A1

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

Combined fan device

Technical Field

The present invention relates to a fan, and more particularly to a combined fan device.

Background

In the prior art, the function of the household fan can be obtained only by connecting the household fan with alternating current, and the portability and the practicability of the household fan are limited. Therefore, the portable fan is proposed in the prior art, but the portable fan in the prior art has the following disadvantages: when the wind power of the portable fan is increased, the portable fan is easy to fall down, and can be placed on a table top for use only by additionally arranging a fixing support; the portable fan in the prior art only has the most basic air supply function, and has single function and poor use experience. The invention solves the problems of wind power and noise, and can replace the household fan by the characteristics of the right application, thereby making a breakthrough in the field of portable fans.

Disclosure of Invention

In order to solve the problems, the invention provides a combined fan device, which solves the problems that the existing fan can be placed on a desktop for use only by additionally arranging a fixing support, the function is single, and the use experience is poor by technically improving the existing fan.

In order to achieve the purpose, the invention adopts the technical scheme that: a combined fan device comprises a fan unit, wherein the fan unit comprises a fan body, a pin joint base and a charging base, and 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.

Furthermore, 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.

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

Furthermore, 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 the charging hole is provided with a first charging interface electrically connected with the power supply control main board; 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.

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.

Further, the lateral wall of swivel housing is provided with the second interface that charges with swivel base control mainboard electric connection.

The clamp comprises a clamp fitting and a fixing device, 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.

The clamp comprises a clamp fitting and a fixing device, 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.

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.

The invention has the beneficial effects that:

1. the fan body can rotate at any angle within the range of 180 degrees around the pin joint base so as to adjust the angle of the fan body, and therefore air blowing can be realized by conveniently selecting a required angle. When the connecting shaft of the pivoting base is detachably assembled in the first mounting hole, the pivoting base can freely rotate around the axis direction of the connecting shaft on a plane vertical to the axis direction of the connecting shaft; therefore, the arrangement enables the fan unit to be adjusted 360 degrees, blowing air to any object without dead angles, and thus the fan device can achieve the effect of a household fan.

2. Because the charging base can rotate, when the charging base rotates by 90 degrees left and right (the projection of the charging base and the pin joint base on the XY space plane is in a cross structure); the fan body can stand on other planes on the table top and stand out despite the large wind force. Meanwhile, when the angle is adjusted, the gravity center is on the upper part and the upper part is light and the lower part is light, so that the fan cannot stand, the gravity center problem is solved by the cross mode, and the fan body can rotate at any angle within the range of 180 degrees around the pivoting base. The whole process does not need to additionally add supporting accessories, and the use is more flexible. And because the first magnet is attached to the charging base bottom, adopted the cross mode can adsorb at will on the surface of iron and can not drop.

3. 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 and the second connecting terminal assembly which are positioned in the connecting shaft are electrically connected; the pin joint base and the charging base are in a detachable form, the charging base can be a charger after being detached, and one side of the charging base is provided with a second mounting hole which is matched with a connecting shaft body of the pin joint base, so that the fan can be changed from a sitting fan to a handheld fan; because the pin joint base and the charging base are in a detachable form, the charging base can be a charger after being detached and can charge electronic equipment; the fan device of this application function is more powerful promptly, promotes the user and uses experience.

4. In the application, the automatic rotating base and the charging base can be quickly aligned in a magnetic coupling mode, and meanwhile, the electric connection between the fan body and the automatic rotating base is realized; therefore, when the fan body is connected with any angle within 360 degrees relative to the automatic rotating base, the battery in the charging base can still automatically and quickly supply power for the driving motor of the automatic rotating base and the rotating base control main board.

5. The fan unit is matched with the clip accessory for use, and the sub-accessory is magnetically attracted with the first magnet of the charging base through the third magnet, so that the fan unit and the charging base can be quickly connected to play a role in fixing; and because the mounting post of clip accessory is pegged graft in the mounting groove at the bottom of charging, also possessed simultaneously and prevented the collision function, can not make the fan turn over from side to side, can only upwards detach the fan unit.

Drawings

Fig. 1 is a schematic structural view of a fan unit.

Fig. 2 is a schematic structural diagram of a rotary charging base of the fan unit.

Fig. 3 is a schematic structural view of the fan unit changed into a handheld form.

Fig. 4 is a schematic view of a pivot in the fan unit.

Fig. 5 is a schematic structural view of the fan unit assembled with the automatic rotating base.

Fig. 6 is a schematic perspective view of the automatic rotating base.

Fig. 7 is a bottom view of the self-rotating base.

Fig. 8 is a schematic perspective view of the charging base.

Fig. 9 is another perspective view of the charging base.

Fig. 10 is a schematic view of the fan unit assembled with the clip fitting.

Figure 11 is a perspective view of a clip fitting.

Fig. 12 is a perspective view of the fan unit fitted with the auto-rotating base and clip assembly.

The reference numbers illustrate: the fan comprises a fan body 11, a pivot 111, a pivoting base 12, a charging base 13, a switch button 131, an air volume adjusting push rod 132, a first charging interface 133, a charging front shell 134, a charging rear shell 135, a first magnet 136, a second mounting hole 137, a mounting groove 138, a third connecting terminal 139, a battery cover 130, a first mounting hole 1300, an automatic rotating base 2, a rotating shell 21, a rotating cover plate 22, a second magnet 23, a conducting ring 24, a second charging interface 25, an insertion hole 26, an arc-shaped waist hole 27, a clip accessory 3, a third magnet 31, a mounting column 32, an outer end 321 and a connecting end 322.

Detailed Description

Referring to fig. 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 battery and a power control motherboard connected to the battery; two sides of the bottom end of the fan body 11 are respectively pivoted with two sides of the pivoting base 12 through a pivot 111, so that the fan body 11 can pivot relative to the pivoting base 12; wherein, the bottom end of the pin joint base 12 is convexly provided with a hollow connecting shaft, and a first connecting terminal component which is electrically communicated with the fan body 11 is arranged in the hollow connecting shaft; the upper end surface of the charging base 13 is provided with a first mounting hole 1300, and one side of the charging base 13 is provided with a second mounting hole 137; the first mounting hole 1300 and the second mounting hole 137 are both internally provided with a second connecting terminal assembly electrically connected with the power control main board; the connecting shaft of the pivot base 12 is detachably mounted in the first mounting hole 1300 or the second mounting hole 137, and the first connecting terminal assembly and the second connecting terminal assembly located in the connecting shaft are electrically connected; when the connecting shaft of the pivot base 12 is assembled in the first mounting hole 1300 or the second mounting hole 137, the pivot base 12 can freely rotate around the axis direction of the connecting shaft on the plane perpendicular to the axis direction of the connecting shaft.

The fan body 11 can rotate around the pivot base 12 at any angle within 180 degrees to adjust the angle of the fan body 11, so that the required angle can be conveniently selected to realize air blowing. When the connecting shaft of the pivoting base 12 is detachably mounted in the first mounting hole 1300, the pivoting base 12 can freely rotate around the axis direction of the connecting shaft on a plane perpendicular to the axis direction of the connecting shaft; therefore, the arrangement enables the fan unit to be adjusted by 360 degrees, and blow air to any object without dead angles, thereby enabling the fan device to achieve the effect of a household fan.

As shown in fig. 2, since the charging base 13 is rotatable, when the charging base 13 is rotated by 90 degrees from left to right (so that the projections of the charging base 13 and the pivoting base 12 on the XY space plane are in a cross structure); the fan body 11 can stand on other planes on the table top and stand out despite the wind force. Meanwhile, when the angle is adjusted, the gravity center is on the upper part and the upper part is light and the lower part is light, so that the fan cannot stand, the gravity center problem is solved by the cross mode, and the fan body 11 can rotate around the pivoting base 12 at any angle within the range of 180 degrees. The whole process does not need to additionally add supporting accessories, and the use is more flexible. And because the first magnet 136 is attached to the bottom of the charging base 13, the charging base can be freely adsorbed on the surface of iron in a cross manner without falling.

Referring to fig. 3, the connecting shaft of the pivot base 12 is detachably mounted in the first mounting hole 1300 or the second mounting hole 137, and the first connecting terminal assembly located in the connecting shaft is electrically connected to the second connecting terminal assembly; the pin joint base 12 and the charging base 13 are detachable, the charging base 13 can be a charger, and one side of the charging base 13 is provided with a second mounting hole 137 which is assembled with a connecting shaft body of the pin joint base 12, so that the fan can be changed into a handheld fan from a sitting fan.

As shown in fig. 2, a connection between the upper end surface of the charging rear case 135 and the rear end surface of the charging rear case 135 is an arc structure. Because one side of charging base 13 has the connection axis body of second mounting hole 137 and pin joint base 12 to join in marriage the dress, can make the fan become handheld fan from a sitting posture fan, the structure of radius angle makes charging base 13 can laminate with the user palm better for it is better to hold the experience, accords with ergonomic more. And when there is the second mounting hole 137 and the connection axis body of pin joint base 12 to join in marriage the dress in one side of charging base 13, pin joint base 12 can be rotatory wantonly around charging base 13, then the user can be according to actual user demand, adjusts the position that charging base 13's circular arc structure and user hand contacted through rotatory charging base 13, so the user uses left hand or right hand all can reach very comfortable handheld experience.

As shown in fig. 8-9, further, the charging base 13 includes a charging front shell 134 and a charging rear shell 135, a battery slot for placing a battery is disposed at the rear end of the charging rear shell 135, and a main board slot for placing a power control main board is disposed at the front end of the charging rear shell 135; wherein the battery is placed in a battery well that covers a battery cover 130; the power supply control main board is placed in the main board groove, and the charging front shell 134 covers the main board groove; and the upper end surface of the charging rear case 135 is provided with a first mounting hole 1300 communicated with the main board groove, and one side of the charging rear case 135 is provided with a second mounting hole 137 communicated with the main board groove. A charging hole communicated with the main board groove is further formed in one side, away from the second mounting hole 137, of the charging rear shell 135, and the charging hole is provided with a first charging interface 133 electrically connected with the power control main board; the charging front shell 134 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 131 which is electrically connected with the power supply control main board, and the air volume adjusting waist hole is internally provided with an air volume adjusting push rod 132 which is electrically connected with the power supply control main board; the bottom of the charging rear case 135 is provided with a first magnet 136 and a plurality of third connection terminals 139 electrically connected to the power control main board.

In this embodiment, the battery cover 130 is provided, that is, the user can directly open the battery cover 130 to replace the internal battery; meanwhile, the charging base 13 can be used as a charger, wherein the first charging interface 133 is a type-c interface and can be used for charging a mobile phone; the user can start or close the fan body 11 through the switch key 131 and adjust the amount of the phoenix through the air quantity adjusting waist hole; in addition, in order to avoid mistakenly touching the switch key 131 in the backpack to start the fan body 11, the power control main board is provided with a corresponding control program, and the fan body 11 can be started only by continuously pressing the switch key 131 for two times, so that the problem of mistaken touching can be effectively solved.

As shown in fig. 6-7, further, the automatic rotating base 2 is further included, where the automatic rotating base 2 includes a rotating casing 21, a rotating cover 22 disposed on the upper end surface of the rotating casing 21, a driving motor disposed in the rotating casing 21 and in driving connection with the rotating cover 22, and a rotating base control main board disposed in the rotating casing 21 and electrically connected to the driving motor; a second magnet 23 is arranged at the center of the surface of the rotary cover plate 22; then, the surface of the rotating cover plate 22 is provided with a plurality of circles of conducting rings 24 extending from the periphery of the second magnet 23 to the periphery of the rotating cover plate 22, and the conducting rings 24 are electrically connected with the rotating base control main board; the charging base 13 is magnetically attracted to the second magnet 23 of the automatic rotating base 2 through the first magnet 136, and the plurality of third connecting terminals 139 contact with the corresponding conducting ring 24, and the driving motor drives the fan unit to rotate around the geometric center of the first magnet 136 on the plane parallel to the automatic rotating base 2.

Referring to fig. 5, in the present application, the automatic rotating base 2 and the charging base 13 can be aligned quickly by means of magnetic coupling, and the electric connection between the fan body 11 and the automatic rotating base 2 is realized at the same time; wherein the fan unit is rotated by the driving motor around the geometric center of the first magnet 136 on the plane parallel to the automatic rotating base 2; therefore, when the fan body 11 is connected with the automatic rotating base 2 at any angle within 360 degrees, the battery in the charging base 13 can still automatically and quickly supply power to the driving motor of the automatic rotating base 2 and the rotating base control main board. Therefore, the fan device of the present invention is convenient to use, can realize the power supply of the automatic rotating base 2 without precisely aligning the automatic rotating base 2 with the charging base 13, and can realize the 360-degree rotation adjustment of the fan unit by the automatic rotating base 2. In this embodiment, there are 4 turns of conducting rings 24, which are respectively corresponding to a signal positive electrode, a signal negative electrode, a power supply positive electrode, and a power supply negative electrode; 4 third connection terminals 139 are provided.

Further, the lateral wall of rotating housing 21 is provided with the second interface 25 that charges with rotating base control mainboard electric connection. Wherein the user can be connected with second interface 25 that charges through the charging wire that corresponds, for the power supply of driving motor and rotating base control mainboard, if charging base 13 is connected with automatic rotating base 2 moreover, then still can be for charging the battery in charging base 13.

Referring to fig. 10-11, in the present application, the fan unit may be used in cooperation with the clip fitting 3, specifically, the present application further includes the clip fitting 3, wherein a third magnet 31 and mounting posts 32 located at two sides of the third magnet 31 are disposed on a surface of the clip fitting 3; the bottom wall of the bottom of the charging rear shell 135 is provided with mounting grooves 138 on two sides of the first magnet 136, wherein the clip fitting 3 is magnetically attracted with the first magnet 136 of the charging base 13 through the third magnet 31, and the mounting column 32 of the clip fitting 3 is inserted into the mounting groove 138 of the charging base 13.

The fan unit is matched with the clip fitting 3 for use, and the sub-fitting is magnetically attracted with the first magnet 136 of the charging base 13 through the third magnet 31, so that the fan unit and the charging base can be quickly connected to play a role in fixing; moreover, the mounting column 32 of the clip fitting 3 is inserted into the mounting groove 138 of the charging base 13, and the anti-collision function is achieved, so that the fan cannot be turned upside down, and the fan unit can only be detached upwards. This function is suitable for use in places where there is a high traffic density, such as: clip accessory 3 is settled at the perambulator, and this accessory makes fan unit possess the function of preventing falling down, and clip accessory 3 can fix on the perambulator for a long time simultaneously, so makes fan unit possess the function of quick installation and separation, and when the perambulator needs folding, clip accessory 3 need not to be taken, so need not to set for the position once more when making next use fan unit. The fan unit has no dead angle and can be fixed at any position to blow to the target of the required wind power.

Referring to fig. 12, further, the fan unit is first assembled with the automatic rotating base 2, and then the clip fitting 3 can be used with the automatic rotating base 2; 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; the mounting post 32 comprises an outer end 321 and a connecting end 322 which are connected in sequence, wherein the outer diameter of the outer end 321 is larger than that of the connecting end 322, and the connecting end 322 is arranged on the surface of the clamp fitting 3; the bottom wall of the rotating shell 21 is provided with a fitting hole corresponding to the mounting column 32, wherein the fitting hole comprises an insertion hole 26 with the width corresponding to the outer diameter of the outer end 321, and an arc-shaped waist hole 27 which extends along the circumferential direction of the bottom wall of the rotating shell 21 and has the width corresponding to the outer diameter of the connecting end 322, and the insertion hole 26 is communicated with the tail end of the arc-shaped waist hole 27; wherein the mounting post 32 of the clip fitting 3 is inserted into the insertion hole 26 and the connection 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. The fitting 3 can be stably fitted to the automatic rotating base 2 due to the setting of the insertion hole 26 and the arc-shaped waist hole 27, and when it is necessary to separate the two, the fitting 3 needs to be rotated in a direction approaching the insertion hole 26 and the mounting post 32 is brought into alignment with the insertion hole 26, and then the fitting 3 is pulled out. Fan unit,

autogiration base

2, 3 three unifications of clip accessory can any one position of fan unit fixation, so great reduction user's arm is tired to appear and can only put the situation of using on the desktop.

Further, a thermal sensor is further disposed in the fan body 11, and the thermal sensor is electrically connected to the first connection terminal assembly. A thermal sensor is also arranged in the fan body 11, firstly, the driving motor drives the fan unit to rotate around the geometric center of the first magnet 136 on a plane parallel to the automatic rotating base 2, the thermal sensor performs a plurality of back and forth scanning, and when the side with stronger thermal inductance or larger range area (such as a head, a chest and the like) is detected, the fan body 11 is controlled to automatically simulate natural wind or wind power with smaller power; when the heat sensation is weak or the area of the range is small (for example, hands, feet and the like), the fan body 11 is controlled to automatically simulate strong wind power, the mode is a sleep mode, the experience of the user is greatly improved, and the condition that the user is ill is greatly reduced. The second mode is a power-saving mode, when a human body leaves the fan, the fan will be automatically turned off, but when the human body approaches the fan, the fan will be automatically turned on. The driving motor drives the fan unit to scan the human body (such as height), the scanned result is transmitted to the automatic rotating base 2, and the automatic rotating base 2 rotates to blow air left and right in the range according to the scanned range.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.

Claims

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.