CN212055194U

CN212055194U - Folding fan

Info

Publication number: CN212055194U
Application number: CN202020372832.7U
Authority: CN
Inventors: 居爱新
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-21
Filing date: 2020-03-21
Publication date: 2020-12-01
Anticipated expiration: 2030-03-21

Abstract

The utility model relates to a folding fan, including fan drive assembly and fan seat assembly, fan drive assembly sets up the upper end at fan seat assembly, and fan drive assembly includes the motor and passes through motor drive's blade, has more than two support legs at the lower extreme of fan seat assembly, and each support leg is located around the fan seat assembly, and the relative fan seat assembly of support leg can the rotatory folding setting that makes progress, and support leg rotatory folding to close together with fan seat assembly, and support leg rotation is opened to the horizontality and is supported support fan seat assembly. The utility model has the advantages that: this fan function is various, accomodates the convenience. The blades can be folded and stored in an overlapping mode, so that the blades with larger diameters can be adopted, and the improvement of the air volume of the fan is facilitated. The support of the lower extreme of fan seat assembly has folding function of accomodating, desk-top service function of placing, handheld service function and wall inhale the function. The fan drive assembly may also adjust the pitch angle.

Description

Folding fan

Technical Field

The utility model relates to a folding fan.

Background

The small fan on the existing market is various, although small, because of the fan cover, the fan blade can not be folded, the pedestal can not be folded, and the storage volume is still large. Meanwhile, the diameter of the fan is too small, so that the air output is very small.

For example, chinese patent document CN210033919U discloses a multifunctional handheld fan, which includes a handheld fan body and a base, wherein the handheld fan body can be inserted into the base through a handle. The hand-held fan body comprises a handle and a fan drive assembly with a fan cover at the upper end of the handle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the folding fan is convenient to use and store.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a folding fan, including fan drive assembly and fan seat assembly, fan drive assembly sets up the upper end at fan seat assembly, fan drive assembly includes the motor and passes through motor drive's blade, the lower extreme of fan seat assembly has more than two support legs, each support leg is located around the fan seat assembly, the relative fan seat assembly of support leg can upwards rotatory folding setting, the support leg upwards rotatory folding is drawn close with fan seat assembly, the support leg is rotatory to be opened to the horizontality and is supported fan seat assembly.

The specific structure that the bracket leg realizes that the bracket leg can be folded and arranged by upward rotation and can be rotated to be opened to a horizontal state with the fan seat assembly is as follows: the lower end of the fan seat assembly is internally provided with a support cavity, a central rotating seat is rotatably arranged in the support cavity, each support leg comprises a main body part and a connecting part protruding out of one side of the tail end of the main body part, the connecting part of each support leg enters the support cavity through an open channel at the lower end of the fan seat assembly and is hinged with the central rotating seat, the support legs are upwards rotated, folded and reset around a hinged joint of the support leg and the central rotating seat through support leg reset springs, the upper edge of an open channel at the corresponding position of each support leg is provided with a low-position upper edge part and a high-position upper edge part which are staggered in height and used for opening, limiting and releasing the support legs, when the support legs are opened and rotated by the central rotating seat and enter the area of the low-position upper edge part, the low-position upper edge part props against the main body parts of the support legs to open and limit the support legs, when the support legs, the opening limiting effect on the support leg is removed, and the support leg is rotated upwards, folded and reset under the action of the support leg reset spring.

One of the specific structures of the high-position upper edge part and the low-position upper edge part which are formed in a staggered manner is as follows: the upper edge of the open channel at the corresponding position of each support leg is provided with a shallow groove notch and a deep groove notch which are separately arranged, the deep groove notch forms a high-position upper edge part, the shallow groove notch forms a low-position upper edge part, and the support legs enter the shallow groove notch or the deep groove notch respectively to be opened for limiting or released for limiting. The shallow groove gap and the deep groove gap which are separately arranged form a separating block between the shallow groove gap and the deep groove gap. The separating block plays a role in limiting and isolating, so that the bracket legs which rotate downwards to be in a horizontal state cannot move between the shallow groove gap and the deep groove gap directly in a horizontal rotation mode. The advantage of this design is that the state of the stand leg cannot be changed accidentally and is more reliable.

Further inject, the center roating seat through roating seat extension spring that resets rotatable and can rise to reset and set up in the support intracavity, roating seat extension spring that resets one end is hung on the center roating seat, the other end of extension spring is hung at the top in the support chamber of the lower extreme of fan seat assembly.

For expanded function, further define, the support leg still can be the folding of down rotation at the lower extreme of fan seat assembly, and the support leg is closed together through the mode of folding of down rotation for carry out handheld through the support leg.

In order to enable the blades to be folded, the fan driving assembly is further limited to be provided with two blades, wherein one blade is fixedly arranged relative to a motor shaft of a motor of the fan driving assembly, and the other blade is rotatably arranged relative to the motor shaft of the motor of the fan driving assembly within the range of 0-180 degrees.

Further inject, the support leg has three, and three support leg sets up around fan seat assembly trisection, has the lantern ring at the front end of one of them support leg, entangles two other support legs when the support leg is closed together through the mode of rotatory folding downwards, still has the draw-in groove that is used for installing the sucking disc on the support leg for adsorb on placing the plane of this folding fan, still have convenient handheld wave unsmooth on the support leg.

Further inject, fixed mounting's blade includes that fixing clip foot and root fix the flexible glue blade on fixing clip foot, the blade of rotatable installation includes that activity clip foot and root fix the flexible glue blade on the activity clip foot, the fixed suit of fixing clip foot is on the motor shaft, still fixed cover is equipped with the riveting lid on the motor shaft, the riveting lid is located the front side of fixing clip foot, the rear side and the front side of riveting lid are axial region and cap portion respectively, the activity clip foot is rotationally the axial region of riveting the lid at the suit, the activity clip foot is rotatory around the axial region of riveting the lid, it is spacing around the cap portion and the fixing clip foot of riveting the lid that the activity clip foot carries out, one side at fixing clip foot has spacing limit, it is spacing to carry out the rotation of 0 ~ 180 degree scope to the activity clip foot.

The fan seat assembly is provided with a fan driving assembly, a fan seat assembly and a rechargeable battery, wherein the fan driving assembly is arranged on the fan seat assembly, the rechargeable battery is used for supplying power to a motor of the fan driving assembly, and the fan seat assembly is provided with a power switch used for controlling the motor of the fan driving assembly to work.

The fan seat assembly comprises a battery pole, an electrode cover and an electric appliance base, wherein the electrode cover is arranged at the upper end of the battery pole, the electric appliance base is arranged at the lower end of the battery pole, the rechargeable battery is a cylindrical rechargeable battery and is arranged in the battery pole, the bottom of the electrode cover and the top of the electric appliance base are connected with the positive pole and the negative pole of the rechargeable battery through electrode contacts, an open cavity extending downwards to the bottom is arranged in the electric appliance base, a circuit board bottom cover is arranged in the open cavity and divides the cavity into a circuit board cavity at the upper part and a support cavity at the lower part, a circuit board used for being connected with the rechargeable battery, a motor and a power switch is arranged in the circuit board cavity, the lower opening of the electric appliance base is provided with a deep groove gap and a shallow groove gap which form a high-position upper edge part and a low-position upper edge part, and the, The adjusting protrusion is embedded into the protrusion groove, the friction disc is located between the protrusion groove and the adjusting protrusion, the locking nut is located on one side of the fan base assembly, the locking screw penetrates through the fan base assembly, the friction disc and the adjusting protrusion from the other side of the fan base assembly and is in threaded connection with the locking nut, the friction disc is in friction fit with the contact surface of the adjusting protrusion, the friction disc is in synchronous rotation fit with the locking screw, the protrusion groove is in rotatable fit with the locking screw, the pitching angle adjusting structure is locked or released by adjusting the locking nut, and the protrusion groove is located on the electrode cover.

The utility model has the advantages that: this fan function is various, accomodates the convenience. The blades can be folded and stored in an overlapping mode, so that the blades with larger diameters can be adopted, and the improvement of the air volume of the fan is facilitated. The support of the lower extreme of fan seat assembly has folding function of accomodating, desk-top service function of placing, handheld service function and wall inhale the function. The fan drive assembly may also adjust the pitch angle.

Drawings

The present invention will be further explained with reference to the drawings and examples;

fig. 1 is a schematic structural diagram of a motor according to the present invention;

fig. 2 is a schematic view of the front view of the fixing clip of the present invention;

FIG. 3 is a schematic side view of the fixing clip of the present invention;

FIG. 4 is a schematic view of the movable clip of the present invention in front view;

FIG. 5 is a schematic side view of the movable clip of the present invention;

fig. 6 is a schematic structural view of the rivet cap of the present invention;

fig. 7 is a cross-sectional view of the rivet cap of the present invention;

fig. 8 is a schematic structural view of the flexible glue blade of the present invention;

fig. 9 is a schematic structural view of the electrode cover in a bottom view;

fig. 10 is a schematic structural view of the electrode cover in a front view;

fig. 11 is a schematic structural view of the electrode cover in a top view;

fig. 12 is a schematic structural view of the electrode cap in a side view;

fig. 13 is a cross-sectional view of a battery pole of the present invention;

fig. 14 is a schematic structural view of the locking nut of the present invention;

fig. 15 is a cross-sectional view of the locking nut of the present invention;

FIG. 16 is a structural schematic view of a friction disk of the present invention in an elevational state;

FIG. 17 is a side elevational schematic view of a friction disc according to the present invention;

fig. 18 is a front view of the locking screw according to the present invention;

fig. 19 is a side view of the locking screw according to the present invention;

fig. 20 is a schematic structural view of the electrical appliance base in a front view state;

fig. 21 is a schematic structural view of the electrical appliance base in a top view state;

fig. 22 is a schematic view of the bottom structure of the electric base according to the present invention;

fig. 23 is a cross-sectional view of the appliance base of the present invention;

fig. 24 is a cross-sectional view of the circuit board bottom cover of the present invention;

fig. 25 is a schematic structural view of the circuit board bottom cover of the present invention;

fig. 26 is a schematic structural view of the center rotary base of the present invention;

fig. 27 is a sectional view of the center rotary base according to the present invention;

fig. 28 is a structural schematic view of the bracket leg in a bottom view;

fig. 29 is a front view of the bracket leg of the present invention;

fig. 30 is a schematic view of an assembly structure of the bracket leg and the central rotary seat of the present invention;

fig. 31 is a sectional view of the entire structure of the folding fan of the present invention;

fig. 32 is a schematic view of a 0-degree folding state of the support leg of the folding fan according to the present invention;

fig. 33 is a schematic view of the overall structure of the foldable fan after the pitch angle is adjusted;

fig. 34 is a schematic front view of the folding fan in a 90-degree desk type placement state according to the present invention;

fig. 35 is a schematic top view of the folding fan in a 90-degree desk-top placement state according to the present invention;

fig. 36 is a schematic view of the folding fan in a 180-degree hand-held state according to the present invention.

In the figure, 1, a fan driving assembly, 1-1, a motor, 1-1-1, an adjusting raised head, 1-2, a fixed clamping pin, 1-2-1, a limiting edge, 1-3, a soft rubber blade, 1-4, a movable clamping pin, 1-5, a riveting cover, 1-5-1, a shaft part, 1-5-2, a cap part, 2, a fan seat assembly, 2-1, a battery rod, 2-2, an electrode cover, 2-2-1, a raised head groove, 2-3, an electric appliance base, 2-3-1, an inverted buckle, 3-1, a bracket leg, 3-1-1, a main body part, 3-1-2, a connecting part, 3-1-3, a clamping groove, 3-2, a central rotating seat and 3-3, a bracket leg reset spring, 3-4 parts of a hinge shaft, 4 parts of a deep groove gap, 4-1 parts of a high-position upper edge, 5 parts of a shallow groove gap, 5-1 parts of a low-position upper edge, 6 parts of a rotary seat reset tension spring, 7 parts of a lantern ring, 8 parts of a sucker, 9 parts of wave-shaped concave-convex parts, 11 parts of a rechargeable battery, 12 parts of an electrode contact, 13 parts of a circuit board bottom cover, 14 parts of a friction disc, 15 parts of locking screws, 16 parts of locking nuts, 17 parts of screw mounting holes, 18 parts of mounting columns and 19 parts of a circuit board.

Detailed Description

Embodiment 1, as shown in fig. 1 to 36, a folding fan includes a fan driving assembly 1 and a fan base assembly 2, the fan driving assembly 1 is disposed at an upper end of the fan base assembly 2, the fan driving assembly 1 includes a motor 1-1 and blades driven by the motor 1-1, the lower end of the fan base assembly 2 has more than two bracket legs 3-1, each bracket leg 3-1 is located around the fan base assembly 2, the bracket leg 3-1 is rotatable and foldable upward relative to the fan base assembly 2, the bracket leg 3-1 is rotatable and foldable upward to be folded together with the fan base assembly 2, and the bracket leg 3-1 is rotatable and foldable to be opened to be horizontal to support the fan base assembly 2.

The support legs 3-1 can also be folded downwards at the lower end of the fan seat assembly 2 in a rotating mode, and the support legs 3-1 are folded together in a rotating mode and are used for being held by hands through the support legs 3-1.

The fan driving assembly 1 has two blades, wherein one blade is fixedly installed relative to a motor shaft of a motor 1-1 of the fan driving assembly 1, and the other blade is rotatably installed relative to the motor shaft of the motor 1-1 of the fan driving assembly 1 within a range of 0-180 degrees.

A pitch angle adjusting structure for adjusting the pitch angle of the fan driving assembly 1 is arranged between the fan driving assembly 1 and the upper end of the fan base assembly 2.

The three support legs 3-1 are arranged in three equal parts around the fan seat assembly 2.

The front end of one support leg 3-1 of the three support legs 3-1 is provided with a lantern ring 7, the other two support legs 3-1 are sleeved when the support legs 3-1 are closed together in a downward rotating and folding mode, the use by hand is convenient, and the support legs 3-1 are also provided with waved concave-convex parts 9 convenient to hold by hand.

The blade of rotatable mounting can overlap with fixed mounting's blade when static, and convenient storage, the rotatory 180 degrees of blade of rotatable mounting expand at the motor during operation, bloies with fixed mounting's blade together. Three support legs 3-1 have three kinds of states, be respectively upwards rotatory folding to 0 degrees folding state of accomodating of closing together with fan seat assembly 2, rotatory open to the desktop state of placing of horizontal 90 degrees and the 180 degrees handheld user state of closing together downwards rotatory folding and each other, let this fan have folding function of accomodating, desktop service function of placing and handheld user function.

The bracket leg 3-1 is also provided with a clamping groove 3-1-3 for mounting a sucking disc 8, and the bracket leg 3-1 can adsorb the fan on the wall surface through the sucking disc 8 when being placed at a 90-degree desk, so that the fan has a wall suction using function.

The specific structure of the bracket leg 3-1, which can be upwards rotated, folded and rotatably opened to a horizontal state together with the fan driving assembly 1, is as follows: the lower end of the fan seat assembly 2 is internally provided with a support cavity, a central rotating seat 3-2 is rotatably arranged in the support cavity, a support leg 3-1 comprises a main body part 3-1-1 and a connecting part 3-1-2 protruding out of one side of the tail end of the main body part 3-1-1, the connecting part 3-1-2 of each support leg 3-1 enters the support cavity through an open channel at the lower end of the fan seat assembly 2 and is hinged with the central rotating seat 3-2, the support leg 3-1 is upwards rotated, folded and reset around a hinged point of the support leg 3-1 and the central rotating seat 3-2 through a support leg reset spring 3-3, the upper edge of the open channel at the corresponding position of each support leg 3-1 is provided with a low-position upper edge part 5-1 and a high-position upper edge part 4-1 which are staggered in height, the support leg opening limiting device is used for opening limiting and releasing limiting of a support leg 3-1, when the support leg 3-1 which rotates downwards to be in a horizontal state rotates by means of a central rotating seat 3-2 and enters a region of a low-position upper edge part 5-1, the low-position upper edge part 5-1 props against a main body part 3-1-1 of the support leg 3-1 to open limiting of the support leg 3-1, when the support leg 3-1 rotates to a region of a high-position upper edge part 4-1 by means of the central rotating seat 3-2, the opening limiting effect of the support leg 3-1 is released, and the support leg 3-1 rotates upwards to be folded and reset under the action of a support leg reset spring 3-3. The support leg reset spring 3-3 is a torsion spring.

The upper edge of the open channel at the corresponding position of each support leg 3-1 is provided with a shallow groove gap 5 and a deep groove gap 4 which are arranged in a separating way, the deep groove gap 4 forms a high-position upper edge part 4-1, the shallow groove gap 5 forms a low-position upper edge part 5-1, and the support legs 3-1 enter the shallow groove gap 5 or the deep groove gap 4 respectively to carry out opening limit or releasing limit.

The central rotating seat 3-2 is rotatably arranged in the support cavity through a rotating seat reset tension spring 6 in a lifting and resetting way, one end of the rotating seat reset tension spring 6 is hung on the central rotating seat 3-2, and the other end of the rotating seat reset tension spring 6 is hung at the top of the support cavity at the lower end of the fan seat assembly 2.

The fixed blades comprise fixed clamping feet 1-2 and soft rubber blades 1-3 with roots fixed on the fixed clamping feet 1-2, the rotatably mounted blades comprise movable clamping feet 1-4 and soft rubber blades 1-3 with roots fixed on the movable clamping feet 1-4, the fixed clamping feet 1-2 are fixedly sleeved on a motor shaft, a riveting cover 1-5 is fixedly sleeved on the motor shaft, the riveting cover 1-5 is positioned at the front side of the fixed clamping feet 1-2, the rear side and the front side of the riveting cover 1-5 are respectively a shaft part 1-5-1 and a cap part 1-5-2, the movable clamping feet 1-4 are rotatably sleeved on the shaft part 1-5-1 of the riveting cover 1-5, the movable clamping feet 1-4 rotate around the shaft part 1-5-1 of the riveting cover 1-5, the movable clamping pin 1-4 is limited back and forth through the cap part 1-5-2 of the riveting cover 1-5 and the fixed clamping pin 1-2, a limiting edge 1-2-1 is arranged on one side of the fixed clamping pin 1-2, and the movable clamping pin 1-4 is limited in rotation within the range of 0-180 degrees.

The flexible glue blade 1-3 is formed by injection molding of a flexible glue material according to a design size, the flexible glue blade 1-3 is fixed on a fixed clamp pin 1-2 and a movable clamp pin 1-4 through screws, the fixed clamp pin 1-2, the movable clamp pin 1-4 and a riveting cover 1-5 are all formed by injection molding of plastics, the fixed clamp pin 1-2 is fixedly sleeved on a motor shaft through a flat wire hole, the motor shaft is a flat wire motor shaft, and the movable clamp pin 1-4 is rotatably sleeved on a shaft part 1-5-1 of the riveting cover 1-5 through the riveting cover 1-5 in a mode of penetrating through a center hole of the movable clamp pin 1-4.

The fan base assembly 2 is internally provided with a rechargeable battery 11 for supplying power to the motor 1-1 of the fan driving assembly 1, and the fan base assembly 2 is provided with a power switch for controlling the motor 1-1 of the fan driving assembly 1 to work.

The pitching angle adjusting structure comprises an adjusting convex head 1-1-1 at the lower part of a fan driving assembly 1, a convex head groove 2-2-1 at the upper end of a fan base assembly 2, a friction disc 14, a locking screw 15 and a locking nut 16, wherein the adjusting convex head 1-1-1 is embedded into the convex head groove 2-2-1, the friction disc 14 is positioned between the convex head groove 2-2-1 and the adjusting convex head 1-1-1, the locking nut 16 is positioned at one side of the fan base assembly 2, the locking screw 15 penetrates through the fan base assembly 2, the friction disc 14, the adjusting convex head 1-1-1 from the other side of the fan base assembly 2 and is in threaded connection with the locking nut 16, the friction disc 14 is in friction fit with the contact surface of the adjusting convex head 1-1-1, the friction disc 14 is in synchronous rotation fit with the locking screw 15, the raised head groove 2-2-1 is rotatably matched with the locking screw 15, and the pitching angle adjusting structure is locked or released by adjusting the locking nut 16.

The friction disc 14 and the adjusting nose 1-1-1 have end gear structures on their contact surfaces, and the friction disc 14 and the adjusting nose 1-1-1 have their contact surfaces frictionally engaged by the end gear structures.

The fan seat assembly 2 comprises a battery pole 2-1, an electrode cover 2-2 and an electric appliance base 2-3, wherein the electrode cover 2-2 is arranged at the upper end of the battery pole 2-1, the electric appliance base 2-3 is arranged at the lower end of the battery pole 2-1, the rechargeable battery 11 is a cylindrical rechargeable battery such as 18650 lithium batteries, the rechargeable battery 11 is arranged in the battery pole 2-1, the bottom of the electrode cover 2-2 and the top of the electric appliance base 2-3 are connected with the positive and negative poles of the rechargeable battery 11 through an electrode contact 12, an open cavity extending downwards to the bottom is arranged in the electric appliance base 2-3, a circuit board bottom cover 13 is arranged in the open cavity to divide the cavity into a circuit board cavity at the upper part and a support cavity at the lower part, and a circuit board 19 used for connecting the rechargeable battery 11, the motor 1-1 and a power, the lower opening of the electric appliance base 2-3 is provided with a deep groove gap 4 and a shallow groove gap 5 which form a high-position upper edge part 4-1 and a low-position upper edge part 5-1.

The battery rod 2-1 is processed by a plastic pipe, and the inner diameter of the pipe is slightly larger than the outer diameter of the rechargeable battery 11. The upper end of the battery rod 2-1 is provided with two symmetrical holes.

The electrode cover 2-2 is formed by plastic injection molding, is matched with the inner circle size of the battery rod 2-1, and is integrally embedded into the upper end of the battery rod 2-1. The raised head groove 2-2-1 is positioned on the electrode cover 2-2.

The electrode cover 2-2 is also provided with two symmetrical holes, the pair locking screws 15 pass through the upper end of the battery rod 2-1 and the symmetrical holes of the electrode cover 2-2, and the electrode cover 2-2 is mounted at the upper end of the battery rod 2-1 through the pair locking screws 15.

The electrical appliance base 2-3 is formed by plastic injection molding, the upper end of the electrical appliance base 2-3 is matched with the inner circle size of the lower end of the battery rod 2-1, the upper end of the electrical appliance base 2-3 is provided with an inverted buckle 2-3-1, the lower end of the battery rod 2-1 is provided with two symmetrical holes, the upper end of the electrical appliance base 2-3 is integrally embedded into the lower end of the battery rod 2-1, and the inverted buckle 2-3-1 is buckled into the symmetrical holes in the lower end of the battery rod 2-1, so that the electrical appliance base 2-3 is installed. The electrode contact 12 on the electrical appliance base 2-3 is specifically a spring contact, and the electrode contact 12 is positioned between the two inversed buckles 2-3-1 at the upper end of the electrical appliance base 2-3.

The electric appliance base 2-3 is provided with a power indicator lamp and a USB charging port besides an integrated power switch, the center of the circuit board bottom cover 13 is provided with a central hole, the edge of the circuit board bottom cover is provided with two screw mounting holes 17, and the circuit board bottom cover 13 is fixed on two mounting columns 18 on the inner wall of an opening cavity of the electric appliance base 2-3 by screws. One end of the rotating seat reset tension spring 6 hooks the central hole of the central rotating seat 3-2, and the other end hooks the central hole of the circuit board bottom cover 13 in the electric appliance base 2-3.

The central rotating seat 3-2 is provided with three notches arranged in trisection, hinge shafts 3-4 are arranged in the notches, three support legs 3-2 are hinged to the trisection positions of the central rotating seat 3-2 through the three hinge shafts 3-4 by the support legs 3-1, clamping grooves 3-1-3 are formed in the support legs, and the sucker 8 is embedded on the support mop through the clamping grooves 3-1-3, so that the position of the sucker 8 can be movably adjusted.

The folding fan of this embodiment 1 is shaped like a small round tube when folded for storage, so as to be convenient for storage and carrying, as shown in fig. 31. When the folding fan is used, the fan driving assembly 1 of the folding fan is adjusted to a proper pitch angle by loosening the locking nuts 16, then the locking nuts 16 are screwed, the support legs 3-1 are rotated and unfolded to be in a horizontal 90-degree state, so that the folding fan becomes a table fan, the motor 1-1 is started by pressing a power switch, the rotatably mounted blades are rotated to be distributed at 180 degrees with the fixedly mounted blades, and air is blown together with the fixedly mounted blades, as shown in fig. 34 and 35. Alternatively, the folding fan is made to be a hand-held fan by rotating the stand legs 3-1 downward by 180 degrees to be folded and gathered each other, as shown in fig. 36.

The above-mentioned embodiment is making on the basis of the utility model discloses a make, other implementation schemes in addition under this utility model thinking also belong to the utility model discloses a protection scope.

In the embodiment 1, the upper edge of the open channel at the corresponding position of each bracket leg 3-1 is provided with a shallow groove notch 5 and a deep groove notch 4 which are arranged in a separated mode, and a separating block is formed between the shallow groove notch 5 and the deep groove notch 4. The separating block plays a role in limiting and isolating, so that the bracket leg 3-1 which rotates downwards to be in a horizontal state cannot move between the shallow groove gap 5 and the deep groove gap 4 directly in a horizontal rotation mode. The advantage of this design is that the state of the stand leg cannot be changed accidentally and is more reliable.

The bracket leg 3-1 which is positioned at any one of the shallow groove gap 5 and the deep groove gap 4 and rotates downwards to be in a horizontal state can be separated from the separation block between the shallow groove gap 5 and the deep groove gap 4 in a mode of pulling down for a certain distance by driving the central rotating seat 3-2 to overcome the pulling force of the rotating seat reset tension spring 6, and then the central rotating seat is driven to rotate to enter the position of the other gap.

Of course, there is also a use method that the central rotating seat 3-2 can complete the movement of the bracket leg 3-1 between the shallow groove gap 5 and the deep groove gap 4 without pulling down for a certain distance. The specific using method comprises the following steps: after the support leg in the shallow groove gap 5 rotates downwards to be in a horizontal state, the support leg is separated from a separation block between the shallow groove gap 5 and the deep groove gap 4 in a mode of continuing to rotate downwards, then the central rotating seat 3-2 driven by the support leg rotates horizontally to enable the support leg to move to the position of the deep groove gap 4, and the support leg can enter the deep groove gap 4 to be folded and stored after being reset. The process of unfolding the folded and stowed leg 3-1 to a desktop resting position is substantially the same.

To this end, the present invention provides an embodiment 2, which is different from embodiment 1 in that: the bracket cavity is internally provided with a rotating shaft structure, and the central rotating seat 3-2 is rotatably arranged through the rotating shaft structure in the bracket cavity. Although the central rotating seat 3-2 can not be pulled down while being rotatable, the operation requirement that the support legs move between the shallow groove gaps 5 and the deep groove gaps 4 can be met.

Example 3 differs from examples 1 and 2 in that: the shallow groove gap 5 and the deep groove gap 4 on the upper edge of the open channel at the corresponding position of each support leg 3-1 are arranged side by side, and no separation block is arranged in the middle.

Claims

1. The utility model provides a folding fan, includes fan drive assembly (1) and fan seat assembly (2), and fan drive assembly (1) sets up the upper end at fan seat assembly (2), and fan drive assembly (1) includes motor (1-1) and the blade of passing through motor (1-1) drive, characterized by: the lower end of the fan seat assembly (2) is provided with more than two bracket legs (3-1), each bracket leg (3-1) is located on the periphery of the fan seat assembly (2), the bracket legs (3-1) can be arranged in an upward rotating and folding mode relative to the fan seat assembly (2), the bracket legs (3-1) are folded in an upward rotating mode to be close to the fan seat assembly (2), and the bracket legs (3-1) are opened in a rotating mode to be in a horizontal state to support the fan seat assembly (2).

2. The folding fan of claim 1, wherein: the lower end of the fan seat assembly (2) is internally provided with a bracket cavity, a central rotating seat (3-2) is rotatably arranged in the bracket cavity,

the bracket legs (3-1) comprise main body parts (3-1-1) and connecting parts (3-1-2) protruding out of one side of the tail ends of the main body parts (3-1-1), the connecting parts (3-1-2) of the bracket legs (3-1) enter the bracket cavity through an open channel at the lower end of the fan seat assembly (2) and are hinged with the central rotating seat (3-2),

the support leg (3-1) rotates upwards around the hinged point of the support leg (3-1) and the central rotating seat (3-2) through a support leg reset spring (3-3) and is folded and reset,

the upper edge of the open channel at the corresponding position of each support leg (3-1) is provided with a low-position upper edge part (5-1) and a high-position upper edge part (4-1) which are staggered in height and used for limiting and releasing the opening of the support leg (3-1), when the support leg (3-1) is opened and rotated by a central rotating seat (3-2) and enters the area of the low-position upper edge part (5-1), the low-position upper edge part (5-1) props against the main body part (3-1-1) of the support leg (3-1) to limit the opening of the support leg (3-1), and when the support leg (3-1) is rotated to the area of the high-position upper edge part (4-1) by the central rotating seat (3-2), the opening limiting effect on the support leg (3-1) is released, the bracket leg (3-1) is rotated and folded upwards to reset under the action of the bracket leg reset spring (3-3).

3. The folding fan of claim 2, wherein: the upper edge of an open channel at the corresponding position of each support leg (3-1) is provided with a shallow groove notch (5) and a deep groove notch (4) which are arranged in a separated mode, the deep groove notch (4) forms a high-position upper edge part (4-1), the shallow groove notch (5) forms a low-position upper edge part (5-1), and the support legs (3-1) are opened and limited or released and limited through respectively entering the shallow groove notch (5) or the deep groove notch (4).

4. The folding fan of claim 3, wherein: the central rotating seat (3-2) is rotatably arranged in the support cavity through a rotating seat reset tension spring (6) in a lifting reset mode, one end of the rotating seat reset tension spring (6) is hung on the central rotating seat (3-2), and the other end of the tension spring is hung at the top of the support cavity at the lower end of the fan seat assembly (2).

5. The folding fan according to claim 1 or 2, wherein: the lower end of the fan seat assembly (2) of the support legs (3-1) can be folded downwards in a rotating mode, and the support legs (3-1) are folded together in a rotating and folding mode downwards and are used for being held by hands through the support legs (3-1).

6. The folding fan of claim 1, wherein: the fan driving assembly (1) is provided with two blades, wherein one blade is fixedly arranged relative to a motor shaft of a motor (1-1) of the fan driving assembly (1), and the other blade is rotatably arranged relative to the motor shaft of the motor (1-1) of the fan driving assembly (1) within a range of 0-180 degrees.

7. The folding fan of claim 5, wherein: the fan seat is characterized in that the number of the support legs (3-1) is three, the three support legs (3-1) are arranged around the fan seat assembly (2) in a trisection mode, a lantern ring (7) is arranged at the front end of one support leg (3-1), the other two support legs (3-1) are sleeved when the support legs (3-1) are closed together in a downward rotating and folding mode, clamping grooves (3-1-3) for mounting suckers (8) are further formed in the support legs (3-1), and waved concave-convex parts (9) convenient to hold by hands are further arranged on the support legs (3-1).

8. The folding fan of claim 6, wherein: the fixed blades comprise fixed clamping pins (1-2) and soft rubber blades (1-3) with roots fixed on the fixed clamping pins (1-2), the rotatably mounted blades comprise movable clamping pins (1-4) and soft rubber blades (1-3) with roots fixed on the movable clamping pins (1-4), the fixed clamping pins (1-2) are fixedly sleeved on a motor shaft, a riveting cover (1-5) is fixedly sleeved on the motor shaft, the riveting cover (1-5) is positioned on the front side of the fixed clamping pins (1-2), the rear side and the front side of the riveting cover (1-5) are respectively a shaft part (1-5-1) and a cap part (1-5-2), the movable clamping pins (1-4) are rotatably sleeved on the shaft part (1-5-1) of the riveting cover (1-5), the movable clamping pin (1-4) rotates around the shaft part (1-5-1) of the riveting cover (1-5), the movable clamping pin (1-4) is limited in the front and back direction through the cap part (1-5-2) of the riveting cover (1-5) and the fixed clamping pin (1-2), a limiting edge (1-2-1) is arranged on one side of the fixed clamping pin (1-2), and the movable clamping pin (1-4) is limited in the rotation range of 0-180 degrees.

9. The folding fan of claim 5, wherein: the fan seat assembly is characterized in that a pitching angle adjusting structure for adjusting the pitching angle of the fan driving assembly (1) is arranged between the fan driving assembly (1) and the upper end of the fan seat assembly (2), a rechargeable battery (11) is arranged in the fan seat assembly (2) and used for supplying power to a motor (1-1) of the fan driving assembly (1), and a power switch is arranged on the fan seat assembly (2) and used for controlling the motor (1-1) of the fan driving assembly (1) to work.

10. The folding fan of claim 9, wherein: the fan seat assembly (2) comprises a battery pole (2-1), an electrode cover (2-2) and an electric appliance base (2-3), the electrode cover (2-2) is installed at the upper end of the battery pole (2-1), the electric appliance base (2-3) is installed at the lower end of the battery pole (2-1), a rechargeable battery (11) is a cylindrical rechargeable battery, the rechargeable battery (11) is arranged in the battery pole (2-1), the bottom of the electrode cover (2-2) and the top of the electric appliance base (2-3) are connected with the positive pole and the negative pole of the rechargeable battery (11) through electrode contacts (12), an open cavity extending downwards to the bottom is arranged in the electric appliance base (2-3), a circuit board bottom cover (13) is installed in the open cavity, and the cavity is divided into a circuit board cavity at the upper part and a support cavity at the lower part, a circuit board (19) which is used for being connected with a rechargeable battery (11), a motor (1-1) and a power switch is arranged in the circuit board cavity, a deep groove gap (4) and a shallow groove gap (5) which form a high-position upper edge part (4-1) and a low-position upper edge part (5-1) are arranged at the lower opening of the electric appliance base (2-3),

the pitching angle adjusting structure comprises an adjusting raised head (1-1-1) at the lower part of a fan driving assembly (1), a raised head groove (2-2-1) at the upper end of a fan base assembly (2), a friction disc (14), a locking screw (15) and a locking nut (16), wherein the adjusting raised head (1-1-1) is embedded into the raised head groove (2-2-1), the friction disc (14) is positioned between the raised head groove (2-2-1) and the adjusting raised head (1-1-1), the locking nut (16) is positioned at one side of the fan base assembly (2), the locking screw (15) penetrates through the fan base assembly (2), the friction disc (14) and the adjusting raised head (1-1-1) from the other side of the fan base assembly (2) and is in threaded connection with the locking nut (16), and the friction fit is realized between the friction surface of the friction disc (14) and the contact surface of the adjusting raised head (1-1-1-1), the friction disc (14) is matched with the locking screw (15) in a synchronous rotating mode, the raised head groove (2-2-1) is matched with the locking screw (15) in a rotating mode, the pitching angle adjusting structure is locked or released by adjusting the locking nut (16), and the raised head groove (2-2-1) is located on the electrode cover (2-2).