CN211778088U

CN211778088U - Easily assembled multipurpose fan

Info

Publication number: CN211778088U
Application number: CN202020119651.3U
Authority: CN
Inventors: 杨伟钊
Original assignee: Shenzhen Annaijia Electronics Co Ltd
Current assignee: Shenzhen Annaijia Electronics Co Ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-27
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a multi-purpose fan easy to assemble, which comprises a fan main body, wherein the fan main body is provided with a front cover, a rear cover and an assembling shell; the front side of the rear cover is assembled with a fan blade assembly, and the front cover is detachably assembled on the front side of the rear cover to cover the fan blade assembly; the assembly shell is assembled on the rear side of the rear cover, a circuit board and a power supply are arranged in the assembly shell, a charging interface and a control switch are arranged on the outer side of the assembly shell, and the circuit board is respectively connected with the power supply, the fan blade assembly, the charging interface and the control switch; the assembling shell is connected with a bracket which is pivoted to the assembling shell so as to be rotatably positioned relative to the assembling shell; a support rod is detachably supported below the assembling shell; therefore, the assembly positioning of the support, the support rod, the circuit board, the power supply and other components is realized by means of the assembly shell, the manufacture and the assembly are convenient, the production is simple and feasible, and meanwhile, the detachable design of the front cover and the support rod facilitates the cleaning and the multipurpose transformation.

Description

Easily assembled multipurpose fan

Technical Field

The utility model relates to an electric fan field technique especially indicates a multi-purpose fan of easily assembling.

Background

The electric fan is an electric appliance which uses a motor to drive fan blades to rotate so as to accelerate the circulation of air, is mainly used for cooling and relieving summer heat and circulating air, and is widely applied to places such as families, offices, shops, hospitals, hotels and the like. The fan mainly comprises a fan blade assembly, a mesh enclosure, a control device and the like. The fan blade assembly comprises fan blades, a motor for driving the fan blades to rotate, front and rear end covers, a head shaking air supply mechanism and the like. In order to meet the application requirements of different occasions, fans are on the market in more and more varieties, such as: vertical fans, desk fans, wall fans, ceiling fans, portable small fans to carry with; because the application occasions of each fan are limited, people often need to purchase various fans, the purchase cost is high, and the trouble in the aspect of storage management is brought.

Later, dual-purpose fans have appeared, which can be supported by a support bar to be used as a vertical fan by clamping the fan at the edge of a desk or the like by a switching mode of dismounting the support bar, and can also be dismounted to directly put the fan on the desk to be used as a desk fan.

However, it still has some disadvantages, such as: 1. can only be directly plugged into power supply terminals such as commercial power and the like for use; 2. the structure is not good enough in reasonability, the support is connected to the fan net cover, the connecting support strength provided by the fan net cover is limited, the difficulty is high in production and manufacturing, the support reliability of the support is not high in actual use, and the phenomenon of unstable shaking is easy to occur when the support is placed on a desktop for use; 3. the design of the connecting structure of the adjusting support rod on the fan is complex, and the production and the manufacture are troublesome; 4. the adjusting support rod is connected to the right rear side of the fan base, and when the fan base is in practical use, the supporting weight of the fan base is limited, so that the fan head can only be made small and light, and the design and the function of the fan head are limited.

Therefore, in the present invention, the applicant has studied a new technical solution to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a multipurpose fan easy to assemble, which is easy to manufacture and assemble, and easy and feasible to produce, and meanwhile, the detachable design of the front cover and the supporting rod facilitates cleaning and multipurpose transformation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multi-purpose fan easy to assemble comprises a fan main body, a fan cover and a fan assembly, wherein the fan main body is provided with a front cover, a rear cover and an assembly shell; wherein:

the fan blade assembly is assembled on the front side of the rear cover, and the front cover is detachably assembled on the front side of the rear cover to cover the fan blade assembly; the assembly shell is assembled on the rear side of the rear cover, a circuit board and a power supply are arranged in the assembly shell, a charging interface and a control switch are arranged on the outer side of the assembly shell, and the circuit board is respectively connected with the power supply, the fan blade assembly, the charging interface and the control switch;

the assembling shell is connected with a support, and the support is pivoted to the assembling shell so as to be rotatably positioned relative to the assembling shell; the support rod is detachably supported below the assembling shell.

Preferably, the front cover is screwed to the rear cover.

Preferably, the front cover is magnetically connected to the rear cover.

As a preferred scheme, a splicing ring part extends from the periphery of the front side of the rear cover, a first magnetic attraction piece is arranged at the rear end of the inner side of the splicing ring part, a connecting column extends backwards from the rear side of the front cover, a second magnetic attraction piece is arranged at the rear end of the connecting column, the front cover covers the opening of the front side of the splicing ring part, the connecting column extends into the inner side of the splicing ring part, and the second magnetic attraction piece is positioned on the first magnetic attraction piece in an adsorbing manner; the first magnetic part and the second magnetic part are heteropolar magnetic parts, or one of the first magnetic part and the second magnetic part is a magnetic part and the other is a metal part capable of being magnetically attracted.

Preferably, the front cover is snap-fit connected to the rear cover.

As a preferred scheme, the rear cover is provided with an elastic buckle assembly, and the elastic buckle assembly comprises a buckle seat, a first elastic resetting piece and a buckle; the buckle seat is connected to the rear cover, and two ends of the first elastic resetting piece respectively act on the buckle seat and the buckle to provide forward resetting force for the buckle; the buckle is provided with a locking elastic arm, and the locking elastic arm is provided with a locking convex point and an unlocking convex point positioned at the rear side of the locking convex point;

the rear side of the front cover is provided with an inverted hook part, the front cover is installed in the rear cover backwards, the inverted hook part backwards extrudes the lock catch convex point of the lock catch elastic arm, and the lock catch convex point clamps the inverted hook part under the reset action of the first elastic reset piece; when the front cover needs to be detached, the front cover is pressed forwards again, the barb portion of the front cover pushes the unlocking salient point forwards to enable the locking elastic arm to be opened, the locking of the locking salient point to the barb portion is released, and the barb portion is separated from the locking elastic arm under the reset action of the first elastic reset piece.

As a preferred scheme, the lower end of the assembly shell is assembled with an external thread clamping piece; the upper end of the supporting rod is connected with a ball head, and an internal thread locking sleeve capable of moving movably along the supporting rod is sleeved on the supporting rod; the ball head extends into the external thread clamping piece, and then the internal thread locking sleeve is upwards screwed and matched with the external thread clamping piece.

Or the lower end of the assembling shell is provided with a clamping groove, and a corresponding clamping inlet is formed in the rear side of the clamping groove on the assembling shell; correspondingly, the upper end of the supporting rod is connected with a clamping block, the clamping block is arranged in the clamping groove from the clamping opening, and the bottom of the clamping block is limited by the inner bottom surface of the clamping groove.

As a preferred scheme, a bracket pivot interface is arranged on the left side and/or the right side of the assembling shell, an isolation cavity is correspondingly formed in the assembling shell corresponding to the bracket pivot interface, a second elastic reset piece, a first toothed gear block and a second toothed gear block are arranged in the isolation cavity, two ends of the second elastic reset piece respectively act on the isolation cavity and the first toothed gear block, the tooth surface of the first toothed gear block is matched with the tooth surface of the second toothed gear block, and the second toothed gear block is connected to the bracket; when the bracket is rotated, the second gear block with teeth rotates relative to the first gear block with teeth and is matched with the corresponding gear to be positioned.

As a preferred scheme, the power supply and the circuit board are respectively located at the front side and the rear side of the isolation cavity, and the charging interface and the control switch are exposed at the rear side of the assembly shell.

Preferably, the rear cover is detachably connected to the assembly housing.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

firstly, the structure of the fan is improved, the assembly and positioning of components such as a bracket, a supporting rod, a circuit board, a power supply and the like are realized by means of an assembly shell, the manufacturing and the assembly are convenient, the production is simple and feasible, and meanwhile, the detachable design of the front cover and the supporting rod is convenient for cleaning and multipurpose transformation;

the support is arranged on the assembly shell, the design space is sufficient, the connection and the assembly are easy, the connection strength between the support and the assembly shell is ensured, the support reliability of the support is good in actual use, and the phenomenon of unstable shaking is avoided when the support is placed on a table for use;

the detachable support of bracing piece forms the support in the below of equipment shell in the direction of gravity, can bear great weight, and the fan main part can freely design not restricted, for example: 1. the size of the fan main body is not limited, 2, a power supply can be configured in the fan main body, the power supply modes such as commercial power insertion and the like are not depended on, the supporting rod can be detached, and the fan main body can be directly carried with a user;

fourthly, the front cover is skillfully assembled and disassembled on the rear cover, and particularly, the assembly and disassembly operation is very convenient and fast through a magnetic attraction and buckling mode, so that the practicability is high;

the mounting structure of the bracket on the assembling shell is reasonable, the first toothed gear block and the second toothed gear block are matched to realize multidirectional rotation adjustment and positioning, the bracket directly rotates during operation and stops along with rotation, and the second elastic reset piece ensures reliable positioning after rotation;

sixthly, the installation that power, circuit board, support equal in the equipment shell is arranged rationally, has effectively utilized the space in the equipment shell, has also carried out preceding, back separation with power, circuit board ingeniously to and, will charge interface, control switch and set up in the rear side of equipment shell, internal connection is simpler, and the operation is also more convenient in the outside use.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic perspective assembly view of a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a first embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view of FIG. 2;

fig. 4 is a schematic perspective assembly view of a fan body according to a first embodiment of the present invention;

fig. 5 is an exploded view of a second embodiment of the present invention (the support rod is only partially shown);

fig. 6 is a schematic partial cross-sectional view of a fan body according to a second embodiment of the present invention;

fig. 7 is an exploded view of a fan body according to a third embodiment of the present invention;

fig. 8 is a schematic partial cross-sectional view of a fan body according to a third embodiment of the present invention;

fig. 9 is another exploded view of the fan body according to the third embodiment of the present invention;

fig. 10 is an exploded view of the assembled housing and bracket according to the third embodiment of the present invention;

fig. 11 is another partial cross-sectional view of the fan main body according to the third embodiment of the present invention.

The attached drawings indicate the following:

1. front cover 2, back cover

3. Assembly shell 4 and fan blade assembly

5. Circuit board 6 and power supply

7. Charging interface 8 and control switch

9. Bracket 10, first screw

11. First magnetic attraction piece 12 and second magnetic attraction piece

13. Spliced ring part 14 and connecting column

15. Elastic buckle assembly 16 and buckle seat

17. First elastic reset piece 18 and buckle

19. Latch elastic arm 20 and latch salient point

21. Unlocking salient point 22 and barb part

23. External thread clamping piece 24 and ball head

25. Internal thread locking sleeve 26 and clamping groove

27. Clamping block 28 and isolation cavity

29. Second elastic reset piece 30 and first toothed gear block

31. Second toothed gear block 32, cover

33. Second connecting hole 34, second inner threaded stud

35. A support bar 36 and a fixing clip.

Detailed Description

Referring to fig. 1 to 11, specific structures of various embodiments of the present invention are shown.

A multi-purpose fan easy to assemble comprises a fan main body having a front cover 1, a rear cover 2, an assembling case 3; wherein:

a fan blade assembly 4 is assembled on the front side of the rear cover 2, and the fan blade assembly 4 comprises fan blades and a motor for driving the fan blades to rotate; the front cover 1 is detachably assembled at the front side of the rear cover 2 to cover the fan blade assembly 4; the assembly shell 3 is assembled at the rear side of the rear cover 2, a circuit board 5 and a power supply 6 are arranged in the assembly shell 3, a charging interface 7 and a control switch 8 are arranged on the outer side of the assembly shell 3, and the circuit board 5 is respectively connected with the power supply 6, the fan blade assembly 4, the charging interface 7 and the control switch 8;

the assembling shell 3 is connected with a bracket 9, and the bracket 9 is pivoted to the assembling shell 3 so as to be rotatably positioned relative to the assembling shell 3; the detachable support in the below of equipment shell 3 has bracing piece 35, the lower extreme of bracing piece 35 is connected with fixation clamp 36, fixation clamp 36 is for the open-close type structure. If the fixing clip 36 is eliminated and the support bar 35 is designed as a handheld bar, the user can use the fan by holding the support bar 35 by hand, which is generally suitable for carrying about. The support rod 35 can be designed to be a hard non-deformable rod, a bendable deformable rod, a telescopic rod and the like.

As shown in fig. 4 to 8, it shows various embodiments in which the front cover 1 is detachably assembled to the front side of the rear cover 2:

as shown in fig. 4, the front cover 1 is screwed to the rear cover 2. A first internal thread hole column extends from the rear side of the front cover 1, a first connecting hole is correspondingly formed in the rear cover 2, and a first screw 10 is screwed into the first internal thread hole column from the rear side of the rear cover 2 forward so as to achieve the connection and fixation of the front cover 1 and the rear cover 2; when the front cover 1 needs to be disassembled, the screws can be disassembled from the rear side of the rear cover 2.

As shown in fig. 5 and 6, the front cover 1 is magnetically attached to the rear cover 2. A splicing ring part 13 extends from the periphery of the front side of the rear cover 2, a first magnetic part 11 is arranged at the rear end of the inner side of the splicing ring part 13, a connecting column 14 extends backwards from the rear side of the front cover 1, a second magnetic part 12 is arranged at the rear end of the connecting column 14, the front cover 1 covers the opening of the front side of the splicing ring part 13, the connecting column 14 extends into the inner side of the splicing ring part 13, and the second magnetic part 12 is adsorbed and positioned on the first magnetic part 11; the first magnetic member 11 and the second magnetic member 12 are opposite magnetic members, or one of the first magnetic member and the second magnetic member is a magnetic member and the other is a metal member capable of being magnetically attracted.

As shown in fig. 7 and 8, the front cover 1 is snap-fit connected to the rear cover 2. The rear cover 2 is provided with an elastic buckle assembly 15, and the elastic buckle assembly 15 comprises a buckle seat 16, a first elastic resetting piece 17 and a buckle 18; the buckle seat 16 is connected to the rear cover 2, and two ends of the first elastic reset piece 17 respectively act on the buckle seat 16 and the buckle 18 to provide a forward reset force for the buckle; the buckle 18 is provided with a buckle elastic arm 19, and the buckle elastic arm 19 is provided with a buckle salient point 20 and an unlocking salient point 21 positioned at the rear side of the buckle salient point 20;

the rear side of the front cover 1 is provided with an inverted hook part 22, the front cover 1 is installed in the rear cover 2 backwards, the inverted hook part 22 backwards extrudes the lock buckle salient point 20 of the lock buckle elastic arm 19, and the lock buckle salient point 20 is clamped on the inverted hook part 22 under the reset action of the first elastic reset piece 17; when the front cover 1 needs to be detached, the front cover 1 is pressed forward again, the inverted hook part 22 of the front cover pushes the unlocking salient point 21 forward to open the locking elastic arm 19, the locking of the locking salient point 20 on the inverted hook part 22 is released, and the inverted hook part 22 is separated from the locking elastic arm 19 under the reset action of the first elastic reset piece 17.

As shown in fig. 2, 3 and 5, two embodiments of the support rod 35 detachably supported under the assembly housing 3 are shown:

as shown in fig. 2 and 3, the lower end of the assembly housing 3 is assembled with an external thread clamping piece 23, where the external thread clamping piece 23 is locked below the mounting plate by arranging a mounting plate inside the assembly housing 3, a relief opening is provided at the lower end of the assembly housing 3, and the lower end of the external thread clamping piece 23 extends into the relief opening; the circuit board 5 and the power supply 6 are arranged in the space above the mounting plate. The upper end of the support rod 35 is connected with a bulb 24, and an internal thread locking sleeve 25 which can move movably along the support rod 35 is sleeved on the support rod 35; the ball head 24 extends into the external thread clamping piece 23, and then the internal thread locking sleeve 25 is screwed upwards to be matched with the external thread clamping piece 23.

As shown in fig. 5, the lower end of the assembly housing 3 has a card slot 26, and the card slot 26 is formed with a corresponding card inlet at the rear side of the assembly housing 3; correspondingly, the upper end of the support rod 35 is connected with a fixture block 27, the fixture block 27 is arranged in the clamping groove 26 from the clamping opening, and the bottom of the fixture block 27 is limited by the inner bottom surface of the clamping groove 26. The locking slot 26 is a T-shaped slot, and correspondingly, the locking inlet is a T-shaped locking inlet, and the locking block 27 is a T-shaped locking block 27; the locking groove 26 and the locking block 27 may be L-shaped.

As shown in fig. 9 to 11, it shows a specific mounting structure of the bracket 9 on the assembly case 3:

the assembly shell 3 is provided with a top wall, a bottom wall, a rear wall, a left side wall and a right side wall, and the front end of the assembly shell is arranged in an open manner; the left side and/or the right side of the assembling shell 3 are/is provided with a support 9 pivot joint, preferably, the support 9 is U-shaped, and two ends of the support are respectively pivoted on the left side and the right side of the assembling shell 3; an isolation cavity 28 is correspondingly formed in the assembly shell 3 corresponding to a pivot joint of the support 9, a second elastic reset piece 29, a first toothed gear block 30 and a second toothed gear block 31 are arranged in the isolation cavity 28, two ends of the second elastic reset piece 29 respectively act on the isolation cavity 28 and the first toothed gear block 30, the tooth surface of the first toothed gear block 30 is matched with the tooth surface of the second toothed gear block 31, and the second toothed gear block 31 is connected to the support 9; when the carrier 9 is rotated, the second toothed gear piece 31 is rotated relative to the first toothed gear piece 30 and is adapted to the respective gear position. And the power supply 6 and the circuit board 5 are respectively positioned at the front side and the rear side of the isolation cavity 28, and the charging interface 7 and the control switch 8 are exposed at the rear side of the assembly shell 3.

During assembly, the bracket 9 is firstly installed in the assembly shell 3, and a cover body 32 is assembled at the front opening of the isolation cavity 28, so that the second elastic reset piece 29, the first toothed gear block 30 and the second toothed gear block 31 are well positioned in the isolation cavity 28; the charging interface 7 and the control switch 8 are connected to the circuit board 5, and the circuit board 5 is arranged on the rear side of the separation cavity 28 in the assembly shell 3, so that the charging interface 7 and the control switch 8 are exposed on the rear side of the assembly shell 3; power 6 is positioned in the rear side of back shroud 2, here, the rear side at back shroud 2 is formed with a cavity, the cavity is used for supplying equipment shell 3 to stretch into the matching location forward, be provided with power location chamber in the cavity, it plays the prepositioning to put into power 6, it is follow-up when fitting the cavity rear side with 3 lids of equipment shell, the rear side shape that the front side of lid 32 just matches power 6 plays the positioning action to power 6, also keep apart power 6 and 9 pin-jointed structures of support, touch power 6 when avoiding support 9 to rotate.

Preferably, the rear cover 2 is detachably connected to the assembly housing 3, a second connection hole 33 penetrating the rear cover 2 forward is formed in the cavity, correspondingly, a second internal threaded hole pillar 34 is formed at the front end of the assembly housing 3, and a second screw is used to extend into the second connection hole 33 from the front side of the rear cover 2 and then screwed into the second internal threaded hole pillar 34 backward; when the assembly shell 3 needs to be disassembled to maintain and repair the inside, the front cover 1 needs to be disassembled firstly.

From the above description of the various embodiments of the multipurpose fan, it can be seen that: it has at least five using modes;

the first use mode is as follows: the positioning clamp is clamped at the edge of a table, a bed head and the like, and the fan is vertically arranged through the support rod 35; for the design situation of ball joint connection, the multi-directional rotation adjustment of the fan main body relative to the support rod 35 can be realized, so that the use direction can be changed as required;

the second use mode: the supporting rod 35 is disassembled, the support is rotated to the lower side of the assembling shell, the fan main body is directly placed on a table top and the like, and the support is contacted with the table top at the rear side of the fan main body to play a role in auxiliary supporting; the arrangement angle of the fan main body can be adjusted by rotating the bracket, so that the air outlet angle is changed;

the use method is as follows: the support rod 35 is disassembled, the support is rotated to the upper side of the assembling shell, and the support is used as a hanging ring and can be hung at a certain position, so that the fan main body can be hung at a higher position for use, and the fan main body is similar to a ceiling fan; certainly, if the fan is hung in a side direction, the fan can also play a role similar to a wall fan;

the use method is as follows: the supporting rod 35 is disassembled, and the portable support is used for carrying the fan main body.

The using mode is as follows: the support bar 35 is used as a handheld bar, and a user can use the fan by holding the support bar 35 with his/her hands, which is generally suitable for carrying about.

The utility model is mainly designed by improving the structure of the fan, realizing the assembly and positioning of the components such as the bracket, the support rod, the circuit board, the power supply and the like by means of the assembly shell, facilitating the manufacture and the assembly, being simple and feasible in production, and simultaneously, the detachable design of the front cover and the support rod facilitates the cleaning and the multipurpose transformation;

secondly, the support is arranged on the assembly shell, the design space is sufficient, the connection and the assembly are easy, the connection strength between the support and the assembly shell is ensured, the support reliability of the support is good in actual use, and the phenomenon of unstable shaking is avoided when the support is placed on a table for use; the detachable support of bracing piece forms the support in the below of equipment shell in the direction of gravity, can bear great weight, and the fan main part can freely design not restricted, for example: 1. the size of the fan main body is not limited, 2, a power supply can be configured in the fan main body, the power supply modes such as commercial power insertion and the like are not depended on, the supporting rod can be detached, and the fan main body can be directly carried with a user;

moreover, the front cover is skillfully assembled and disassembled on the rear cover, and particularly, the front cover is convenient and quick to assemble and disassemble through a magnetic attraction and buckling mode, so that the practicability is high;

the mounting structure of the bracket on the assembling shell is reasonable, the first toothed gear block and the second toothed gear block are matched to realize multidirectional rotation adjustment and positioning, the bracket directly rotates during operation and stops along with rotation, and the second elastic reset piece ensures reliable positioning after rotation; in addition, the power supply, the circuit board and the support are reasonably arranged in the assembly shell, the space in the assembly shell is effectively utilized, the power supply and the circuit board are skillfully isolated from each other in the front and the back, the charging interface and the control switch are arranged on the rear side of the assembly shell, the internal wiring is simpler, and the external use operation is more convenient.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A multi-purpose fan of easy equipment which characterized in that: the fan comprises a fan main body, wherein the fan main body is provided with a front cover, a rear cover and an assembling shell; wherein:

2. A multipurpose fan easy to assemble as claimed in claim 1, wherein: the front cover is connected to the rear cover through screws.

3. A multipurpose fan easy to assemble as claimed in claim 1, wherein: the front cover is connected with the rear cover in a magnetic type mode.

4. A multipurpose fan easy to assemble as claimed in claim 3, wherein: the rear cover comprises a rear cover and a front cover, wherein a splicing ring part extends from the periphery of the front side of the rear cover, a first magnetic attraction piece is arranged at the rear end of the inner side of the splicing ring part, a connecting column extends backwards from the rear side of the front cover, a second magnetic attraction piece is arranged at the rear end of the connecting column, the front cover covers a front opening of the splicing ring part, the connecting column extends into the inner side of the splicing ring part, and the second magnetic attraction piece is positioned on the first magnetic attraction piece in an adsorption manner; the first magnetic part and the second magnetic part are heteropolar magnetic parts, or one of the first magnetic part and the second magnetic part is a magnetic part and the other is a metal part capable of being magnetically attracted.

5. A multipurpose fan easy to assemble as claimed in claim 1, wherein: the front cover is connected to the rear cover in a buckling mode.

6. A multipurpose fan easy to assemble as claimed in claim 5, wherein: the rear cover is provided with an elastic buckle assembly, and the elastic buckle assembly comprises a buckle seat, a first elastic reset piece and a buckle; the buckle seat is connected to the rear cover, and two ends of the first elastic resetting piece respectively act on the buckle seat and the buckle to provide forward resetting force for the buckle; the buckle is provided with a locking elastic arm, and the locking elastic arm is provided with a locking convex point and an unlocking convex point positioned at the rear side of the locking convex point;

7. A multipurpose fan easy to assemble as claimed in claim 1, wherein: the lower end of the assembling shell is assembled with an external thread clamping piece; the upper end of the supporting rod is connected with a ball head, and an internal thread locking sleeve capable of moving movably along the supporting rod is sleeved on the supporting rod; the ball head extends into the external thread clamping piece, and then the internal thread locking sleeve is upwards screwed and matched with the external thread clamping piece;

8. A multipurpose fan easy to assemble as claimed in claim 1, wherein: the left side and/or the right side of the assembling shell are/is provided with a support pivot interface, an isolation cavity is correspondingly formed in the assembling shell corresponding to the support pivot interface, a second elastic resetting piece, a first toothed gear block and a second toothed gear block are arranged in the isolation cavity, two ends of the second elastic resetting piece respectively act on the isolation cavity and the first toothed gear block, the tooth surface of the first toothed gear block is matched with the tooth surface of the second toothed gear block, and the second toothed gear block is connected to the support; when the bracket is rotated, the second gear block with teeth rotates relative to the first gear block with teeth and is matched with the corresponding gear to be positioned.

9. A multipurpose fan easy to assemble as claimed in claim 8, wherein: the power supply and the circuit board are respectively positioned on the front side and the rear side of the isolation cavity, and the charging interface and the control switch are exposed on the rear side of the assembly shell.

10. A multipurpose fan easy to assemble as claimed in claim 1, 8 or 9, wherein: the rear cover is detachably connected to the assembling shell.