CN219012975U - Folding fan - Google Patents

Abstract

The application provides a folding fan. The folding fan comprises a body, a plurality of connecting rod mechanisms and a plurality of fan blades which are assembled together, wherein a plane four-bar mechanism is formed by the body, a first side link, a second side link and a connecting rod of the connecting rod mechanisms. In the case of a plurality of fan blades in the unfolded state, the linkage can be in an extreme position, in which case the planar four-bar linkage can be in a dead-center position or in a position slightly beyond the dead-center position. Therefore, the fan blades connected with the link mechanism at the limit position cannot change the shape, and even in the state that the rotating speed of the folding fan is small and even zero, the link mechanism can still maintain the shape that the fan blades are in the unfolding state, so that the folding fan can provide a micro windshield position.

Description

Folding fan

Technical Field

The present application relates to the field of fans, and more particularly to a folding fan.

Background

Nowadays, fans are widely used in the production and life of humans. Fans are of a wide variety, some of which are foldable in order to save space occupied in an inactive state, such fans also being referred to as folding fans. The existing folding fans keep the fan blades in an unfolded state through centrifugal action, so that the rotating speed of the folding fans cannot be too low, and therefore, the folding fans cannot provide a micro windshield position.

Disclosure of Invention

The present application has been made in order to solve the above-described drawbacks of the prior art. The present utility model provides a novel folding fan, which can maintain its fan blades in an unfolded state in a state of low rotation speed, thereby being capable of providing a micro windshield position.

In order to achieve the purpose of the application, the following technical scheme is adopted.

The application provides a folding fan as follows, including:

a body for driving coupling with a power source such that the body is rotatable about its central axis under the drive of the power source;

the connecting rod mechanisms comprise a first connecting rod, a second connecting rod and a connecting rod elastic connecting piece, one end part of the first connecting rod is rotationally connected with the body, the other end part of the first connecting rod is rotationally connected with the connecting rod, one end part of the second connecting rod is rotationally connected with the body, and the other end part of the second connecting rod is rotationally connected with the connecting rod; and

the fan blades are fixed with the corresponding connecting rods of the connecting rod mechanisms, the power source is utilized to drive the body so that the fan blades can be switched between a folded state and an unfolded state, wherein when the fan blades are in the unfolded state, the first connecting rod, the second connecting rod and the connecting rods are in limiting positions in each connecting rod mechanism, and therefore the fan blades can be kept in the unfolded state.

In an alternative scheme, a straight line passing through the rotation connection center of the second side link and the body and the rotation connection center of the second side link and the connecting rod is a first straight line, a straight line passing through the rotation connection center of the connecting rod and the first side link and the rotation connection center of the connecting rod and the second side link is a second straight line, and in a state that the first straight line coincides with the second straight line, the first side link, the second side link and the connecting rod are in a limit position.

In another alternative, the link has a stop against which the first link lever abuts in the state in which the first link lever, the second link lever and the link are in the limit position.

In another alternative, the folding fan further comprises a synchronizing mechanism mounted to the body and coupled to each of the linkages for synchronizing movement of the plurality of linkages during transition of the plurality of blades between the folded state and the unfolded state.

In another alternative, the synchronizing mechanism includes a synchronizing disk and a plurality of spacing pins,

the synchronous disc is coaxially and rotatably connected with the body, the synchronous disc is provided with limiting sliding grooves corresponding to each connecting rod mechanism, each limiting sliding groove extends along the radial direction of the synchronous disc,

each limiting pin is mounted on the corresponding second side link of the connecting rod mechanism and inserted into the corresponding limiting sliding groove, and the limiting pins and the limiting sliding grooves are matched with each other so that the limiting pins can slide in the limiting sliding grooves.

In another alternative, each of the limit pins is mounted at a portion between one end and the other end of the corresponding second side link, and the limit pin is located at one end of the limit chute in the case that the plurality of blades are in the folded state.

In another alternative, the body is formed with a first limit portion, the synchronizing plate is formed with a second limit portion, and the first limit portion and the second limit portion are aligned with each other in the unfolded state of the plurality of fan blades, so that the plurality of fan blades can be limited in the unfolded state by using a limit member inserted into the first limit portion and the second limit portion.

In another alternative, the device further comprises a driving component in transmission connection with the synchronous disk, so that the driving component can drive the synchronous disk to rotate relative to the body.

In another alternative, it further comprises an elastic connection capable of exerting an elastic force on said first or second side link at least in said unfolded state,

the elastic connecting piece is an extension spring, one end of the elastic connecting piece is connected with the body, and the other end of the elastic connecting piece is connected with a part between one end part and the other end part of the first side link; or alternatively

The elastic connecting piece is an extension spring, one end of the elastic connecting piece is connected with the body, and the other end of the elastic connecting piece is connected with a part between one end part and the other end part of the second side link; or alternatively

The elastic connecting piece is a torsion spring, one end of the elastic connecting piece is connected with or abutted against the body, and the other end of the elastic connecting piece is connected with or abutted against the first side link.

The application also provides a working method of the folding fan according to any one of the above technical schemes, wherein,

when the fan blades are in the folded state, the power source applies torque to the folded fan towards one direction, the centrifugal force of the fan blades and the acting force of the air flow are utilized to enable the fan blades to be converted into the unfolded state from the folded state,

when the plurality of blades are in the unfolded state, the power source applies a torque to the folding fan in the other direction opposite to the one direction, and the first side link, the second side link and the connecting rod can be separated from the limit positions by utilizing inertia of the blades.

By adopting the technical scheme, the application provides a folding fan. The folding fan comprises a body, a plurality of link mechanisms and a plurality of fan blades which are assembled together. Specifically, the body is adapted to be drivingly coupled to the power source such that the body is rotatable about its central axis upon actuation of the power source. Further, each linkage includes a first side link, a second side link, and a link. The two ends of the first side link are respectively connected with the body and the connecting rod in a rotating way, and the two ends of the second side link are respectively connected with the body and the connecting rod in a rotating way. Further, each fan blade is fixed with a connecting rod of the corresponding connecting rod mechanism. Therefore, the body is driven by the power source, and drives the plurality of connecting rod mechanisms and the plurality of fan blades, so that the plurality of fan blades can be converted between a folded state and an unfolded state. Moreover, in the case where the plurality of blades are in the expanded state, in each link mechanism, the first link, the second link, and the link are in the extreme positions, so that the plurality of blades can be maintained in the expanded state.

Thus, the body and the first, second and connecting rods of the linkage together form a planar four-bar linkage, which can be brought into a limit position when the plurality of blades are in the extended state, in which case the planar four-bar linkage can be brought into a dead point position or a position slightly beyond the dead point position. Therefore, the fan blades connected with the link mechanism at the limit position cannot change the shape, and even in the state that the rotating speed of the folding fan is small and even zero, the link mechanism can still maintain the shape that the fan blades are in the unfolding state, so that the folding fan can provide a micro windshield position.

Drawings

Fig. 1 is a schematic top view illustrating a folding fan according to an embodiment of the present application, in which a plurality of blades of the folding fan are in an unfolded state, and an arrow direction in the figure indicates a rotation direction of the folding fan when the folding fan is normally operated.

Fig. 2 is an enlarged schematic view showing a partial structure of the folding fan in fig. 1.

Fig. 3 is a schematic bottom view showing the folding fan of fig. 1, in which a plurality of blades of the folding fan are in a folded state, and an arrow direction in the figure indicates a rotation direction of the folding fan when the folding fan is normally operated.

Fig. 4 is an enlarged schematic view showing a partial structure of the folding fan of fig. 3, in which blades connected to a link mechanism marked in the drawing are omitted to make the link mechanism more clearly visible.

Description of the reference numerals

1, a body; 11 a body base; 11h of a first limiting part; 12 a first body extension; 13 a second body extension;

2 a connecting rod mechanism; 21 a first side link; 22 a second side link; a 23 connecting rod; 231 stops; 232 side wall portions; 233 mounting part; 24 elastic connection member;

3, fan blades;

4, a synchronizing mechanism; 41 a synchronization disk; 411 a synchronization disk base; 411h a second limit part; 412 a synchronization disk extension; 412g of limiting chute; 42 limit pins;

l1 is a first straight line; l2 second straight line.

Detailed Description

Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are merely illustrative of how one skilled in the art may practice the present application and are not intended to be exhaustive of all of the possible ways of practicing the present application nor to limit the scope of the present application.

In this application, two components are "drivingly coupled" to mean that the two components are connected in a manner that enables torque transfer, including direct and indirect connections.

In this application, two parts are "rotationally coupled" in the sense that the two parts are coupled to each other in a relatively rotatable manner, e.g. the two parts may be hinged together, or the two parts may be mounted on the same rotational axis and at least one of the two parts may be rotatable about the rotational axis, or the point where the two parts are coupled is provided with a rotational joint such that the two parts are rotatable about or via the rotational joint.

In this application, "axial," "radial," and "circumferential" refer to the axial, radial, and circumferential directions, respectively, of the body of the folding fan, unless otherwise noted.

The structure of a folding fan according to an embodiment of the present application will be described first with reference to the drawings.

As shown in fig. 1 to 4, a folding fan according to an embodiment of the present application includes a body 1, four link mechanisms 2, four blades 3, and a synchronizing mechanism 4 assembled together. The four link mechanisms 2 are uniformly distributed at intervals in the circumferential direction of the body 1, the four fan blades 3 are uniformly distributed at intervals in the circumferential direction of the body 1, and the link mechanisms 2 and the fan blades 3 are arranged in pairs in one-to-one correspondence. Thus, in the different states of the four blades 3 in the unfolded state (fig. 1 and 2) and in the folded state (fig. 3 and 4), the linkage mechanism 2 is correspondingly in different configurations.

In the present embodiment, as shown in fig. 1 to 4, a body 1 is used for driving coupling with a power source such as a motor or the like. In the case where the power source transmits torque to the body 1, the body 1 can be rotated about its central axis by the power source. The direction of rotation of the body 1 may be different as the direction of torque output from the power source is different. Specifically, the body 1 includes a body base 11, a first body extension 12, and a second body extension 13 formed as one body.

As shown in fig. 1 to 4, the body base 11 is formed in a circular shape. Four first body protrusions 12 are provided, the four first body protrusions 12 protruding from the body base 11 toward the radially outer side in different radial directions and being uniformly distributed at intervals in the circumferential direction. The free end of each first body extension 12 is rotatably connected to a first link lever 21 of the linkage 2. In addition, four second body protrusions 13 are provided, the four second body protrusions 13 protruding from the body base 11 toward the radially outer side in different radial directions and being uniformly distributed at intervals in the circumferential direction. Each second body extension 13 is in rotational connection with a second side link 22 of the linkage 2. The paired first body extension 12 and second body extension 13 are mounted with a corresponding one of the link mechanisms 2.

Further, as shown in fig. 1 to 4, the body 1 (body base 11) is formed with a first stopper portion 11h, and the synchronizing plate 41 of the synchronizing mechanism 4 is formed with a second stopper portion 411h. When the four fan blades 3 are in a folded state, the first limiting part 11h and the second limiting part 411h are staggered; in the state where the four blades 3 are in the expanded state, the first and second stopper portions 11h and 411h are aligned with each other, and the plurality of blades 3 can be restricted in the expanded state by the stopper inserted into the first and second stopper portions 11h and 411h. In this way, it is convenient to limit the folding fan to a state in which the plurality of blades 3 are unfolded during maintenance of the folding fan. It is to be understood that, in the present embodiment, the first limiting portion 11h and the second limiting portion 411h each take the form of a notch, but the present application is not limited thereto, and the first limiting portion 11h and the second limiting portion 411h may take other forms such as a slot, a hole, and the like.

In the present embodiment, as shown in fig. 1 to 4, each link mechanism 2 includes a first link 21, a second link 22, a link 23, and an elastic connection piece 24. One end of the first link 21 is rotatably connected to the first body extension 12 of the body 1, and the other end of the first link 21 is rotatably connected to one end of the link 23. One end of the second side link 22 is rotatably connected to the second body protrusion 13 of the body 1, and the other end of the second side link 22 is rotatably connected to the other end of the link 23. Thus, with the body 1 as a frame, the body 1 and the first side link 21, the second side link 22, and the link 23 of the link mechanism 2 constitute a planar four-bar mechanism. Further, as shown in fig. 1 to 4, the elastic connection member 24 is an extension coil spring, one end of the elastic connection member 24 is connected to the body base 11 at a portion between the paired first body extension 12 and second body extension 13, and the other end of the elastic connection member 24 is connected to the first link 21 at a portion between one end portion and the other end portion thereof, whereby the elastic connection member 24 can apply an elastic force to the first link 21.

Further, in the present embodiment, as shown in fig. 1 and 2, when the four blades 3 of the folding fan are in the unfolded state, the four-bar linkage is actually in the dead point position. That is, as shown in fig. 2, a straight line passing through the rotational connection center of the second side link 22 with the body 1 and the rotational connection center of the second side link 22 with the link 23 is set as a first straight line L1, and a straight line passing through the rotational connection center of the link 23 with the first side link 21 and the rotational connection center of the link 23 with the second side link 22 is set as a second straight line L2, when the four blades 3 of the folding fan are in the unfolded state, the first straight line L1 coincides with the second straight line L2, the first side link 21, the second side link 22, and the link 23 are in the limit positions, and the four-bar mechanism described above is in the dead point position in actuality. As shown in fig. 3 and 4, when the four blades 3 of the folding fan are in a folded state, the four-bar linkage can be maintained in a folded state by the elastic force of the elastic connection member 24. As shown in fig. 2 and 4, the tension coil spring as the elastic connection member 24 is in a first tension state in a folded state, and in a second tension state in an unfolded state, the tension coil spring may have a tension spring force in the first tension state greater than or equal to zero, and the tension coil spring may have a tension spring force in the second tension state greater than the tension spring force in the first tension state. That is, the tension spring force of the tension coil spring is continuously increased during the transition of the fan blade 3 from the folded state toward the unfolded state.

Further, as shown in fig. 1 to 4, the connecting rod 23 is fixed with the corresponding fan blade 3. Specifically, the link 23 is formed as a hollow rod, and includes a stopper 231, two side wall portions 232, and a mounting portion 233. The mounting portion 233 is fixedly connected to the fan blade 3, the stopper portion 231 and the mounting portion 233 are opposite to each other with a space therebetween, and the mounting portion 233 and the stopper portion 231 are respectively connected to the two side wall portions 232, whereby the stopper portion 231, the two side wall portions 232 and the mounting portion 233 are constructed end to end with a hollow space formed therebetween. The length of the stopper 231 is smaller than the length of the side wall portion 232, and referring to fig. 2, the first link 21 can be rotated to a state where a part of the structure thereof is located between the two side wall portions 232 and abuts against the stopper 231 in a state where the first link 21, the second link 22, and the link 23 are at the limit positions, so that the link mechanism 2 can be prevented from rotating beyond the limit positions (dead point positions).

In the present embodiment, as shown in fig. 1 to 4, the four fan blades 3 are identical in shape and are each formed in an arc shape. Each fan blade 3 is fixed to the link 23 of the corresponding link mechanism 2, and as shown in fig. 1, the windward side of each fan blade 3 in operation is the clockwise side in the figure. The body 1 is driven by a power source, so that the plurality of fan blades 3 can be switched between a folded state and an unfolded state.

In the present embodiment, as shown in fig. 1 to 4, a synchronizing mechanism 4 is mounted to the body 1 and connected to each link mechanism 2 for synchronizing movement of the link mechanisms 2 during transition of the plurality of blades 3 between the folded state and the unfolded state. Specifically, the synchronizing mechanism 4 includes a synchronizing plate 41 and a plurality of stopper pins 42. The synchronizing disk 41 is rotatably connected coaxially with the body 1, and the synchronizing disk 41 includes a synchronizing disk base 411 and a synchronizing disk protrusion 412 formed as one body. The synchronizing disk base 411 is formed in a circular shape, and the synchronizing disk base 411 is coaxially arranged with the body base 11. Four synchronization disk protrusions 412 protrude from the synchronization disk base 411 toward the radial outside in different radial directions and are uniformly distributed at intervals in the circumferential direction of the synchronization disk base 411. Each of the synchronizing plate extensions 412 is formed with a limit chute 412g corresponding to each of the link mechanisms 2, and each of the limit chutes 412g extends a predetermined length in the radial direction of the synchronizing plate base 411. Each stopper pin 42 is mounted to the second side link 22 of the corresponding link mechanism 2, specifically, a portion of each stopper pin 42 mounted between one end and the other end of the second side link 22, and each stopper pin 42 is inserted into a stopper slide groove 412g of the corresponding synchronizing plate protrusion 412, the stopper pins 42 and the stopper slide grooves 412g being engaged with each other to be able to define a locus of movement of the second side link 22 during the transition between the folded state and the unfolded state. In addition, as shown in fig. 4, the engagement between the stopper pin 42 and the stopper chute 412g can also define the position where the plurality of blades 3 of the folding fan are in the folded state. Specifically, in the case where the fan blade 3 is in the folded state, the stopper pin 42 is located at one end of the stopper chute 412g, so that the position of the folded state is defined by the stopper pin 42 and the stopper chute 412g, so that the link mechanism 2 is stopped after moving in place by the elastic force of the elastic connection member 24.

By adopting the above technical solution, the body 1 and the first side link 21, the second side link 22 and the connecting rod 23 of the connecting rod mechanism 2 together form a four-bar mechanism, and the four-bar mechanism can be in an extreme position (i.e. a dead point position) when the plurality of fan blades 3 are in the unfolded state. Thereby, the fan blade 3 connected to the link mechanism 2 at the limit position can maintain the expanded state. Even in a state where the rotational speed of the folding fan is small or even zero, the plurality of blades 3 can maintain the unfolded state, whereby the folding fan of the present application can provide a micro windshield.

The following describes a working method of a folding fan according to an embodiment of the present application with reference to the drawings.

In summary, in one aspect, when the plurality of blades 3 are in the folded state as shown in fig. 3 and 4, the power source applies torque to the folding fan in one direction (clockwise direction in fig. 1 and counterclockwise direction in fig. 3), and the blades 3 can be converted from the folded state to the unfolded state by the force of the air flow to the blades 3 and the centrifugal force of the blades 3. On the other hand, when the plurality of blades 3 are in the expanded state as shown in fig. 1 and 2, the power source can apply torque to the folding fan in the other direction opposite to the one direction, the plurality of blades 3 can be separated from the limit position by the inertia of the blades 3, and the conversion from the expanded state to the folded state is achieved by the elastic connection 24.

Specifically, when the folding fan is in the folded state, the power source applies torque to the folding fan toward one direction, so that the folding fan rotates toward one direction. Then, the windward side of the blades 3 receives an acting force of the air flow, and the blades 3 can be converted from the folded state to the unfolded state under the combined action of the acting force and the centrifugal force of the blades 3 during rotation.

When the folding fan is in the unfolded state, the power source still applies the torque in one direction to the folding fan or the power source no longer applies the torque in one direction, and the fan blades 3 of the folding fan are still maintained in the unfolded state because the four-bar linkage consisting of the body 1 and the bar linkage 2 is in the limit position (dead point position).

When the folding fan is in the unfolded state, the power source applies torque to the folding fan toward the other direction, and there may be the following two cases.

One is that torque is applied in one direction during rotation of the folding fan in the other direction, and the folding fan is suddenly lowered in rotation speed or suddenly stopped, and the plurality of blades 3 can be separated from the limit position (dead point position) by the inertial force, and then can be converted from the unfolded state to the folded state by the elastic force of the elastic connection member 24.

Another case is that torque is applied in the other direction when the folding fan is stationary, the folding fan is driven to rotate in the other direction by the power source, the leeward side of the blades 3 is subjected to the force of the air flow, and the blades 3 can be separated from the limit position (dead point position) by the force of the force, and can be then converted from the unfolded state to the folded state by the elastic force of the elastic connection member 24.

The specific embodiments of the present application are explained in detail in the above, and supplementary explanation is made below.

i. In the above specific embodiment, the synchronous mechanism 4 is adopted to realize synchronous unfolding and folding of different blades 3, and in the case of arranging the synchronous mechanism 4, the blades 3 of the folding fan of the present application do not interfere with each other in the unfolding and folding process. In fact, in the solution of the present application, for example, the synchronizing mechanism 4 may not be provided in the case where the plurality of blades 3 can be spaced apart from each other by a sufficient distance during both the unfolding and folding processes. The synchronizing mechanism 4 is not limited to the use of the pin-and-slot structure, and may be configured to achieve the same function, for example, by providing other links.

in the above embodiment, although the limit position is described as the dead point position of the planar four-bar linkage, the present application is not limited thereto. In other alternatives, the limit position may be other positions beyond the dead point position, it being understood that the limit position can be defined by the stop 231.

With the structure of the folding fan of the present application, since the body 1 and the fan blades 3 are connected by the link mechanism 2, it is also possible to achieve the effect of obtaining a large expansion size at the same folding size.

The number and shape of the blades 3 are not limited in the technical solution of the present application, but any number and shape of the blades 3 may be used as long as the structure and operation method described in the above embodiment are satisfied.

In the above embodiment, it is described that the elastic connection piece 24 is connected to the body 1 and the first side frame bar 21 at both ends, respectively, thereby being capable of applying elastic force to the first side frame bar 21 during the transition of the plurality of blades 3 from the folded state toward the unfolded state and in the unfolded state. However, the present application is not limited thereto.

In an alternative, the elastic connection 24 is an extension spring, and one end of the elastic connection 24 is connected to the body 1 and the other end is connected to a portion between one end and the other end of the second side link 22. In this way, the same function as the elastic connection member 24 described in the above-described embodiment can also be achieved.

In another alternative, the elastic connection member 24 is a torsion spring, and the spiral portion of the elastic connection member 24 may be sleeved on the shaft for implementing the rotational connection between the body 1 and the first frame link 21, where one end of the elastic connection member 24 is connected to or abuts against the body 1 and the other end is connected to or abuts against the first frame link 21. In this way, the same function as the elastic connection member 24 described in the above-described embodiment can also be achieved.

In fact, if the driving means provided on the basis of the above specific embodiment drive the rotation of the synchronizing disk 41 of the synchronizing mechanism 4 with respect to the body 1, the unfolding and folding of the plurality of blades 3 can be achieved by the driving means, in which case the elastic connection 24 can be omitted.

Claims (9)

1. A folding fan, comprising:

a body for driving coupling with a power source such that the body is rotatable about its central axis under the drive of the power source;

the connecting rod mechanisms comprise a first connecting rod, a second connecting rod and a connecting rod, one end part of the first connecting rod is rotationally connected with the body, the other end part of the first connecting rod is rotationally connected with the connecting rod, one end part of the second connecting rod is rotationally connected with the body, and the other end part of the second connecting rod is rotationally connected with the connecting rod; and

a plurality of fan blades, each fan blade is fixed with the corresponding connecting rod of the connecting rod mechanism,

the body is driven by the power source so that the fan blades can be switched between a folded state and an unfolded state, wherein the first side link, the second side link and the connecting rod are in limit positions in each connecting rod mechanism under the condition that the fan blades are in the unfolded state, and the fan blades can be kept in the unfolded state.

2. The folding fan according to claim 1, wherein a straight line passing through a rotational connection center of the second side link with the body and a rotational connection center of the second side link with the link is a first straight line, and a straight line passing through a rotational connection center of the link with the first side link and a rotational connection center of the link with the second side link is a second straight line, and the first side link, the second side link, and the link are in an extreme position in a state where the first straight line coincides with the second straight line.

3. The folding fan of claim 2, wherein the link has a stop against which the first side link abuts in a state in which the first side link, the second side link, and the link are in the extreme positions.

4. A folding fan according to any one of claims 1 to 3, further comprising a synchronisation mechanism mounted to the body and connected to each of the linkages for synchronising movement of the linkages as the plurality of blades are switched between the folded and unfolded states.

5. The folding fan as claimed in claim 4, wherein the synchronizing mechanism includes a synchronizing plate and a plurality of stopper pins,

the synchronous disc is coaxially and rotatably connected with the body, the synchronous disc is provided with limiting sliding grooves corresponding to each connecting rod mechanism, each limiting sliding groove extends along the radial direction of the synchronous disc,

each limiting pin is mounted on the corresponding second side link of the connecting rod mechanism and inserted into the corresponding limiting sliding groove, and the limiting pins and the limiting sliding grooves are matched with each other so that the limiting pins can slide in the limiting sliding grooves.

6. The folding fan of claim 5, wherein each of the stopper pins is installed at a portion between one end portion and the other end portion of the corresponding second side link, the stopper pin being located at one end of the stopper chute with the plurality of blades in the folded state.

7. The folding fan of claim 5, wherein the body is formed with a first stopper portion, the synchronizing plate is formed with a second stopper portion, and the first stopper portion and the second stopper portion are aligned with each other in the unfolded state of the plurality of blades, so that the plurality of blades can be restricted in the unfolded state by using stoppers inserted into the first stopper portion and the second stopper portion.

8. The folding fan of claim 5, further comprising a drive member drivingly coupled to the synchronization disk such that the drive member is capable of driving the synchronization disk to rotate relative to the body.

9. The folding fan as claimed in any one of claims 1 to 3, further comprising an elastic connection member capable of applying an elastic force to the first side link or the second side link at least in the unfolded state,

the elastic connecting piece is an extension spring, one end of the elastic connecting piece is connected with the body, and the other end of the elastic connecting piece is connected with a part between one end part and the other end part of the first side link; or alternatively

The elastic connecting piece is an extension spring, one end of the elastic connecting piece is connected with the body, and the other end of the elastic connecting piece is connected with a part between one end part and the other end part of the second side link; or alternatively

The elastic connecting piece is a torsion spring, one end of the elastic connecting piece is connected with or abutted against the body, and the other end of the elastic connecting piece is connected with or abutted against the first side link.

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